This is an automated email from the git hooks/post-receive script. It was generated because a ref change was pushed to the repository containing the project "uClibc-ng - small C library for embedded systems". The branch, master has been updated via ee92c0fe5c1b9d59508273916e2c9a75b68dbc13 (commit) from dd46699e46decb7273f44dc2cbf307f096dc39e8 (commit) Those revisions listed above that are new to this repository have not appeared on any other notification email; so we list those revisions in full, below. - Log ----------------------------------------------------------------- commit ee92c0fe5c1b9d59508273916e2c9a75b68dbc13 Author: Waldemar Brodkorb &lt;wbx(a)openadk.org&gt; Date: Thu Apr 21 01:25:29 2016 +0200 nds32: add support for new architecture Add support for Andes Technology NDS32 architecture. See here http://www.andestech.com/en/index/index.htm for more informaton. Verification of the port from an older uClibc port was done on a sponsored AG101p board. The testsuite only has 5 errors, three are related to an existing bug in dlclose() with LT.old, also happening on cris32 and m68k. Failures to fallocate/posix_fallocate are unresolved. Thanks to Andes Technology sponsoring the hardware and being very helpful while doing the uClibc-ng porting. Signed-off-by: Waldemar Brodkorb &lt;wbx(a)uclibc-ng.org&gt; ----------------------------------------------------------------------- Summary of changes: README | 8 +- Rules.mak | 9 + extra/Configs/Config.in | 12 +- extra/Configs/Config.nds32 | 31 ++ include/elf.h | 173 ++++++++++- ldso/ldso/nds32/dl-debug.h | 25 ++ ldso/ldso/nds32/dl-startup.h | 175 ++++++++++++ ldso/ldso/nds32/dl-syscalls.h | 11 + ldso/ldso/nds32/dl-sysdep.h | 99 +++++++ ldso/ldso/nds32/elfinterp.c | 315 +++++++++++++++++++++ ldso/ldso/nds32/resolve.S | 76 +++++ libc/string/{xtensa => nds32}/Makefile | 0 libc/string/nds32/memcpy.S | 88 ++++++ libc/string/nds32/memset.S | 66 +++++ libc/sysdeps/linux/{xtensa => nds32}/Makefile | 0 libc/sysdeps/linux/nds32/Makefile.arch | 5 + libc/sysdeps/linux/nds32/__longjmp.S | 90 ++++++ libc/sysdeps/linux/nds32/__syscall_error.c | 16 ++ libc/sysdeps/linux/nds32/bits/byteswap.h | 121 ++++++++ libc/sysdeps/linux/nds32/bits/endian.h | 16 ++ libc/sysdeps/linux/{xtensa => nds32}/bits/fcntl.h | 0 libc/sysdeps/linux/nds32/bits/kernel_stat.h | 57 ++++ libc/sysdeps/linux/nds32/bits/kernel_types.h | 52 ++++ libc/sysdeps/linux/nds32/bits/mathdef.h | 40 +++ libc/sysdeps/linux/nds32/bits/mman.h | 106 +++++++ libc/sysdeps/linux/nds32/bits/setjmp.h | 42 +++ libc/sysdeps/linux/nds32/bits/shm.h | 106 +++++++ libc/sysdeps/linux/nds32/bits/sigcontext.h | 59 ++++ libc/sysdeps/linux/nds32/bits/stackinfo.h | 31 ++ libc/sysdeps/linux/nds32/bits/stat.h | 172 +++++++++++ libc/sysdeps/linux/nds32/bits/syscalls.h | 103 +++++++ .../linux/nds32/bits/uClibc_arch_features.h | 37 +++ libc/sysdeps/linux/nds32/bits/uClibc_page.h | 31 ++ libc/sysdeps/linux/nds32/bits/wordsize.h | 23 ++ libc/sysdeps/linux/nds32/brk.c | 67 +++++ libc/sysdeps/linux/nds32/bsd-_setjmp.S | 35 +++ libc/sysdeps/linux/nds32/bsd-setjmp.S | 34 +++ libc/sysdeps/linux/nds32/clone.S | 93 ++++++ libc/sysdeps/linux/nds32/crt1.S | 96 +++++++ libc/sysdeps/linux/nds32/crti.S | 81 ++++++ libc/sysdeps/linux/nds32/crtn.S | 24 ++ libc/sysdeps/linux/nds32/jmpbuf-offsets.h | 28 ++ libc/sysdeps/linux/nds32/jmpbuf-unwind.h | 12 + libc/sysdeps/linux/nds32/mmap.S | 101 +++++++ libc/sysdeps/linux/nds32/setjmp.S | 109 +++++++ libc/sysdeps/linux/nds32/sigaction.c | 40 +++ libc/sysdeps/linux/nds32/sigrestorer.S | 42 +++ libc/sysdeps/linux/nds32/sys/elf.h | 13 + libc/sysdeps/linux/nds32/sys/io.h | 48 ++++ libc/sysdeps/linux/nds32/sys/procfs.h | 127 +++++++++ libc/sysdeps/linux/nds32/sys/ptrace.h | 133 +++++++++ libc/sysdeps/linux/nds32/sys/regdef.h | 90 ++++++ libc/sysdeps/linux/nds32/sys/ucontext.h | 112 ++++++++ libc/sysdeps/linux/nds32/sys/user.h | 83 ++++++ libc/sysdeps/linux/nds32/syscall.S | 60 ++++ libc/sysdeps/linux/nds32/sysdep.S | 125 ++++++++ libc/sysdeps/linux/nds32/sysdep.h | 271 ++++++++++++++++++ libc/sysdeps/linux/nds32/vfork.S | 87 ++++++ libpthread/linuxthreads/sysdeps/nds32/pspinlock.c | 102 +++++++ libpthread/linuxthreads/sysdeps/nds32/pt-machine.h | 66 +++++ librt/spawn.c | 1 + ...{libm-test-ulps-xtensa => libm-test-ulps-nds32} | 0 62 files changed, 4267 insertions(+), 8 deletions(-) create mode 100644 extra/Configs/Config.nds32 create mode 100644 ldso/ldso/nds32/dl-debug.h create mode 100644 ldso/ldso/nds32/dl-startup.h create mode 100644 ldso/ldso/nds32/dl-syscalls.h create mode 100644 ldso/ldso/nds32/dl-sysdep.h create mode 100644 ldso/ldso/nds32/elfinterp.c create mode 100644 ldso/ldso/nds32/resolve.S copy libc/string/{xtensa => nds32}/Makefile (100%) create mode 100644 libc/string/nds32/memcpy.S create mode 100644 libc/string/nds32/memset.S copy libc/sysdeps/linux/{xtensa => nds32}/Makefile (100%) create mode 100644 libc/sysdeps/linux/nds32/Makefile.arch create mode 100644 libc/sysdeps/linux/nds32/__longjmp.S create mode 100644 libc/sysdeps/linux/nds32/__syscall_error.c create mode 100644 libc/sysdeps/linux/nds32/bits/byteswap.h create mode 100644 libc/sysdeps/linux/nds32/bits/endian.h copy libc/sysdeps/linux/{xtensa => nds32}/bits/fcntl.h (100%) create mode 100644 libc/sysdeps/linux/nds32/bits/kernel_stat.h create mode 100644 libc/sysdeps/linux/nds32/bits/kernel_types.h create mode 100644 libc/sysdeps/linux/nds32/bits/mathdef.h create mode 100644 libc/sysdeps/linux/nds32/bits/mman.h create mode 100644 libc/sysdeps/linux/nds32/bits/setjmp.h create mode 100644 libc/sysdeps/linux/nds32/bits/shm.h create mode 100644 libc/sysdeps/linux/nds32/bits/sigcontext.h create mode 100644 libc/sysdeps/linux/nds32/bits/stackinfo.h create mode 100644 libc/sysdeps/linux/nds32/bits/stat.h create mode 100644 libc/sysdeps/linux/nds32/bits/syscalls.h create mode 100644 libc/sysdeps/linux/nds32/bits/uClibc_arch_features.h create mode 100644 libc/sysdeps/linux/nds32/bits/uClibc_page.h create mode 100644 libc/sysdeps/linux/nds32/bits/wordsize.h create mode 100644 libc/sysdeps/linux/nds32/brk.c create mode 100644 libc/sysdeps/linux/nds32/bsd-_setjmp.S create mode 100644 libc/sysdeps/linux/nds32/bsd-setjmp.S create mode 100644 libc/sysdeps/linux/nds32/clone.S create mode 100644 libc/sysdeps/linux/nds32/crt1.S create mode 100644 libc/sysdeps/linux/nds32/crti.S create mode 100644 libc/sysdeps/linux/nds32/crtn.S create mode 100644 libc/sysdeps/linux/nds32/jmpbuf-offsets.h create mode 100644 libc/sysdeps/linux/nds32/jmpbuf-unwind.h create mode 100644 libc/sysdeps/linux/nds32/mmap.S create mode 100644 libc/sysdeps/linux/nds32/setjmp.S create mode 100644 libc/sysdeps/linux/nds32/sigaction.c create mode 100644 libc/sysdeps/linux/nds32/sigrestorer.S create mode 100644 libc/sysdeps/linux/nds32/sys/elf.h create mode 100644 libc/sysdeps/linux/nds32/sys/io.h create mode 100644 libc/sysdeps/linux/nds32/sys/procfs.h create mode 100644 libc/sysdeps/linux/nds32/sys/ptrace.h create mode 100644 libc/sysdeps/linux/nds32/sys/regdef.h create mode 100644 libc/sysdeps/linux/nds32/sys/ucontext.h create mode 100644 libc/sysdeps/linux/nds32/sys/user.h create mode 100644 libc/sysdeps/linux/nds32/syscall.S create mode 100644 libc/sysdeps/linux/nds32/sysdep.S create mode 100644 libc/sysdeps/linux/nds32/sysdep.h create mode 100644 libc/sysdeps/linux/nds32/vfork.S create mode 100644 libpthread/linuxthreads/sysdeps/nds32/pspinlock.c create mode 100644 libpthread/linuxthreads/sysdeps/nds32/pt-machine.h copy test/math/{libm-test-ulps-xtensa => libm-test-ulps-nds32} (100%) diff --git a/README b/README index 002b6f9..9395b65 100644 --- a/README +++ b/README @@ -12,7 +12,7 @@ Porting applications from glibc to uClibc-ng typically involves just recompiling the source code. uClibc-ng even supports shared libraries and threading. It currently runs on standard Linux and MMU-less (also known as µClinux) systems with support for ARC, ARM, Blackfin, i386, M68K/Coldfire -MIPS, MIPS64, PowerPC, SH, Sparc, X86_64 and XTENSA processors. +MIPS, MIPS64, NDS32, PowerPC, SH, Sparc, X86_64 and XTENSA processors. If you are building an embedded Linux system and you find that glibc is eating up too much space, you should consider using @@ -22,10 +22,10 @@ example, that 12 Terabytes will be Network Attached Storage and you plan to burn Linux into the system's firmware... uClibc-ng is maintained by Waldemar Brodkorb and is licensed under the -GNU LESSER GENERAL PUBLIC LICENSE. This license allows you to +GNU LESSER GENERAL PUBLIC LICENSE. This license allows you to make closed source commercial applications using an unmodified version of uClibc-ng. You do not need to give away all your source code just -because you use uClibc-ng and/or run on Linux. You should, however, +because you use uClibc-ng and/or run on Linux. You should, however, carefuly review the license and make certain you understand and abide by it strictly. @@ -42,7 +42,7 @@ Additional information can be found at http://www.uclibc-ng.org/. uClibc-ng may be freely modified and distributed under the terms of the GNU Lesser General Public License, which can be found in the -file COPYING. +file COPYING.LIB. And most of all, be sure to have some fun! :-) -Waldemar diff --git a/Rules.mak b/Rules.mak index 3e4e6c0..894d4dc 100644 --- a/Rules.mak +++ b/Rules.mak @@ -104,6 +104,7 @@ ifeq ($(TARGET_ARCH),) ARCH ?= $(shell uname -m | $(SED) -e s/i.86/i386/ \ -e s/sun.*/sparc/ -e s/sparc.*/sparc/ \ -e s/arm.*/arm/ -e s/sa110/arm/ \ + -e s/nds32.*/nds32/ \ -e s/sh.*/sh/ \ -e s/s390x/s390/ -e s/parisc.*/hppa/ \ -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \ @@ -300,6 +301,7 @@ ifeq ($(UCLIBC_HAS_SOFT_FLOAT),y) ifneq ($(TARGET_ARCH),bfin) ifneq ($(TARGET_ARCH),lm32) ifneq ($(TARGET_ARCH),nios2) +ifneq ($(TARGET_ARCH),nds32) ifneq ($(TARGET_ARCH),sh) ifneq ($(TARGET_ARCH),c6x) ifneq ($(TARGET_ARCH),h8300) @@ -313,6 +315,7 @@ endif endif endif endif +endif $(eval $(call check-gcc-var,-std=gnu99)) CPU_CFLAGS-y += $(CFLAG_-std=gnu99) @@ -410,6 +413,12 @@ ifeq ($(TARGET_ARCH),mips) CPU_LDFLAGS-y += $(CPU_CFLAGS) endif +ifeq ($(TARGET_ARCH),nds32) + CPU_CFLAGS-$(CONFIG_NDS32_ISA)+=-march=nds32 + CFLAGS-.os+= -DPIC + CFLAGS-.oS+= -DPIC +endif + ifeq ($(TARGET_ARCH),sh) $(eval $(call check-gcc-var,-mprefergot)) OPTIMIZATION += $(CFLAG_-mprefergot) diff --git a/extra/Configs/Config.in b/extra/Configs/Config.in index 4a1509d..1d97e78 100644 --- a/extra/Configs/Config.in +++ b/extra/Configs/Config.in @@ -31,6 +31,7 @@ choice default TARGET_metag if DESIRED_TARGET_ARCH = "metag" default TARGET_microblaze if DESIRED_TARGET_ARCH = "microblaze" default TARGET_mips if DESIRED_TARGET_ARCH = "mips" + default TARGET_nds32 if DESIRED_TARGET_ARCH = "nds32" default TARGET_nios2 if DESIRED_TARGET_ARCH = "nios2" default TARGET_or1k if DESIRED_TARGET_ARCH = "or1k" default TARGET_powerpc if DESIRED_TARGET_ARCH = "powerpc" @@ -94,6 +95,9 @@ config TARGET_microblaze config TARGET_mips bool "mips" +config TARGET_nds32 + bool "nds32" + config TARGET_nios2 bool "nios2" @@ -172,6 +176,10 @@ if TARGET_metag source "extra/Configs/Config.metag" endif +if TARGET_nds32 +source "extra/Configs/Config.nds32" +endif + if TARGET_nios2 source "extra/Configs/Config.nios2" endif @@ -476,7 +484,6 @@ config LDSO_GNU_HASH_SUPPORT choice prompt "Thread support" - #default UCLIBC_HAS_THREADS_NATIVE if (TARGET_alpha || TARGET_arm || TARGET_i386 || TARGET_mips || TARGET_powerpc || TARGET_sh || TARGET_sh64) default HAS_NO_THREADS help If you want to compile uClibc with pthread support, then answer Y. @@ -524,6 +531,7 @@ config UCLIBC_HAS_THREADS_NATIVE !TARGET_ia64 && \ !TARGET_m68k && \ !TARGET_microblaze && \ + !TARGET_nds32 && \ !TARGET_nios2 && \ !TARGET_or1k && \ ARCH_USE_MMU @@ -2094,7 +2102,7 @@ menu "Security options" config UCLIBC_BUILD_PIE bool "Build utilities as ET_DYN/PIE executables" depends on HAVE_SHARED - depends on TARGET_arm || TARGET_frv || TARGET_i386 || TARGET_mips || TARGET_powerpc + depends on TARGET_arm || TARGET_frv || TARGET_i386 || TARGET_mips || TARGET_powerpc || TARGET_nds32 select FORCE_SHAREABLE_TEXT_SEGMENTS help If you answer Y here, ldd and iconv are built as ET_DYN/PIE diff --git a/extra/Configs/Config.nds32 b/extra/Configs/Config.nds32 new file mode 100644 index 0000000..a742499 --- /dev/null +++ b/extra/Configs/Config.nds32 @@ -0,0 +1,31 @@ +# +# For a description of the syntax of this configuration file, +# see extra/config/Kconfig-language.txt +# + +config TARGET_ARCH + string + default "nds32" + +config FORCE_OPTIONS_FOR_ARCH + bool + default y + select ARCH_ANY_ENDIAN + select ARCH_HAS_DEPRECATED_SYSCALLS + select ARCH_HAS_MMU + +choice + prompt "MMU Page Size" + default CONFIG_NDS32_PAGE_SIZE_4K + +config CONFIG_NDS32_PAGE_SIZE_4K + bool "4KB" + help + Use 4k pagesize. + +config CONFIG_NDS32_PAGE_SIZE_8K + bool "8KB" + help + Use 8k pagesize. + +endchoice diff --git a/include/elf.h b/include/elf.h index 4a0280b..17a6143 100644 --- a/include/elf.h +++ b/include/elf.h @@ -264,11 +264,12 @@ typedef struct #define EM_CR 103 /* National Semiconductor CompactRISC */ #define EM_MSP430 105 /* TI msp430 micro controller */ #define EM_BLACKFIN 106 /* Analog Devices Blackfin */ -#define EM_ALTERA_NIOS2 113 /* Altera Nios II soft-core processor */ +#define EM_ALTERA_NIOS2 113 /* Altera Nios II soft-core processor */ #define EM_CRX 114 /* National Semiconductor CRX */ #define EM_TI_C6000 140 +#define EM_NDS32 167 /* Andes Tech NDS32 */ #define EM_METAG 174 /* Imagination Technologies Meta */ -#define EM_MICROBLAZE 189 /* Xilinx Microblaze */ +#define EM_MICROBLAZE 189 /* Xilinx Microblaze */ #define EM_ARCV2 195 /* ARCv2 Cores */ /* NEXT FREE NUMBER: Increment this after adding your official arch number */ @@ -2912,6 +2913,174 @@ typedef Elf32_Addr Elf32_Conflict; #define R_H8_ABS32A16 127 #define R_H8_NUM 128 +/* NDS32 relocs. */ +#define R_NDS32_NONE 0 +/* REL relocations */ +#define R_NDS32_16 1 +#define R_NDS32_32 2 +#define R_NDS32_20 3 +#define R_NDS32_9_PCREL 4 +#define R_NDS32_15_PCREL 5 +#define R_NDS32_17_PCREL 6 +#define R_NDS32_25_PCREL 7 +#define R_NDS32_HI20 8 +#define R_NDS32_LO12S3 9 +#define R_NDS32_LO12S2 10 +#define R_NDS32_LO12S1 11 +#define R_NDS32_LO12S0 12 +#define R_NDS32_SDA15S3 13 +#define R_NDS32_SDA15S2 14 +#define R_NDS32_SDA15S1 15 +#define R_NDS32_SDA15S0 16 +#define R_NDS32_GNU_VTINHERIT 17 +#define R_NDS32_GNU_VTENTRY 18 + +/* RELA relocations */ +#define R_NDS32_16_RELA 19 +#define R_NDS32_32_RELA 20 +#define R_NDS32_20_RELA 21 +#define R_NDS32_9_PCREL_RELA 22 +#define R_NDS32_15_PCREL_RELA 23 +#define R_NDS32_17_PCREL_RELA 24 +#define R_NDS32_25_PCREL_RELA 25 +#define R_NDS32_HI20_RELA 26 +#define R_NDS32_LO12S3_RELA 27 +#define R_NDS32_LO12S2_RELA 28 +#define R_NDS32_LO12S1_RELA 29 +#define R_NDS32_LO12S0_RELA 30 +#define R_NDS32_SDA15S3_RELA 31 +#define R_NDS32_SDA15S2_RELA 32 +#define R_NDS32_SDA15S1_RELA 33 +#define R_NDS32_SDA15S0_RELA 34 +#define R_NDS32_RELA_GNU_VTINHERIT 35 +#define R_NDS32_RELA_GNU_VTENTRY 36 +#define R_NDS32_GOT20 37 +#define R_NDS32_25_PLTREL 38 +#define R_NDS32_COPY 39 +#define R_NDS32_GLOB_DAT 40 +#define R_NDS32_JMP_SLOT 41 +#define R_NDS32_RELATIVE 42 +#define R_NDS32_GOTOFF 43 +#define R_NDS32_GOTPC20 44 +#define R_NDS32_GOT_HI20 45 +#define R_NDS32_GOT_LO12 46 +#define R_NDS32_GOTPC_HI20 47 +#define R_NDS32_GOTPC_LO12 48 +#define R_NDS32_GOTOFF_HI20 49 +#define R_NDS32_GOTOFF_LO12 50 +#define R_NDS32_INSN16 51 +#define R_NDS32_LABEL 52 +#define R_NDS32_LONGCALL1 53 +#define R_NDS32_LONGCALL2 54 +#define R_NDS32_LONGCALL3 55 +#define R_NDS32_LONGJUMP1 56 +#define R_NDS32_LONGJUMP2 57 +#define R_NDS32_LONGJUMP3 58 +#define R_NDS32_LOADSTORE 59 +#define R_NDS32_9_FIXED_RELA 60 +#define R_NDS32_15_FIXED_RELA 61 +#define R_NDS32_17_FIXED_RELA 62 +#define R_NDS32_25_FIXED_RELA 63 +#define R_NDS32_PLTREL_HI20 64 +#define R_NDS32_PLTREL_LO12 65 +#define R_NDS32_PLT_GOTREL_HI20 66 +#define R_NDS32_PLT_GOTREL_LO12 67 + +/* Processor specific section indices. These sections do not actually + exist. Symbols with a st_shndx field corresponding to one of these + values have a special meaning. */ + +/* Small common symbol. */ +#define SHN_NDS32_SCOMMON 0xff00 + +/* Processor specific section flags. */ + +/* This section contains sufficient relocs to be relaxed. + When relaxing, even relocs of branch instructions the assembler could + complete must be present because relaxing may cause the branch target to + move. */ +#define SHF_NDS32_CAN_RELAX 0x10000000 + +/* ----------------------------------------------------------- */ +/* Processor specific flags for the ELF header e_flags field. */ +/* ----------------------------------------------------------- */ +/* 31 28 27 8 7 4 3 0 */ +/* ---------------------------------------------- */ +/* | ARCH | CONFUGURAION FIELD | ABI | VERSION | */ +/* ---------------------------------------------- */ + +/* ----------------------------------------------------------- */ +/* ARCHITECHURE DEFINITION */ +/* ----------------------------------------------------------- */ +/* 4-bit (b31-b28) nds32 architecture field. */ +/* we can have up to 15 architectures; 0000 is for unknown */ +#define EF_NDS_ARCH 0xF0000000 +/* 0x80000000 is for no 16-bit */ +/* there could be more architectures. but for now, only n1 and n1h */ +#define E_NDS_ARCH_STAR_RESERVED 0x00000000 /* for future extension */ +#define E_NDS_ARCH_STAR_V1_0 0x10000000 +#define E_NDS_ARCH_STAR_V0_9 0x90000000 /* old arch */ + +/* n1 code. */ +#define E_N1_ARCH E_NDS_ARCH_STAR_V0_9 +/* n1h code. */ +#define E_N1H_ARCH E_NDS_ARCH_STAR_V1_0 + +/* ----------------------------------------------------------- */ +/* CONFIGURATION FIELD DEFINITION FOR EACH ARCHITECTURE */ +/* ----------------------------------------------------------- */ +#define EF_NDS_INST 0x0FFFFF00 + +/* E_NDS_ARCH_STAR_V1_0 configuration fields */ + +/* MFUSR rt, PC and correct ISYNC, MSYNC instructions. */ +/* old N1213HC has no such instructions */ +#define E_NDS32_HAS_MFUSR_PC_INST 0x00000100 +/* C/C++ performance extension instructions. */ +#define E_NDS32_HAS_EXT_INST 0x00000200 +/* performance extension set II instructions. */ +#define E_NDS32_HAS_EXT2_INST 0x00000400 +/* Floating point processor instructions. */ +#define E_NDS32_HAS_FPU_INST 0x00000800 +/* audio instructions. */ +#define E_NDS32_HAS_AUDIO_INST 0x00001000 +/* DIV instructions. */ +#define E_NDS32_HAS_DIV_INST 0x00002000 +/* 16-bit instructions. */ +#define E_NDS32_HAS_16BIT_INST 0x00004000 +/* string operation instructions. */ +#define E_NDS32_HAS_STRING_INST 0x00008000 +/* reduced register file */ +#define E_NDS32_HAS_REDUCED_REGS 0x00010000 +/* video instructions */ +#define E_NDS32_HAS_VIDEO_INST 0x00020000 +/* encription instructions */ +#define E_NDS32_HAS_ENCRIPT_INST 0x00040000 +/* Single/Doulbe Precision Floating point processor instructions. */ +#define E_NDS32_HAS_FPU_DP_INST 0x00080000 +/* no MAC instruction used */ +#define E_NDS32_HAS_NO_MAC_INST 0x00100000 +/* L2 cache instruction */ +#define E_NDS32_HAS_L2C_INST 0x00200000 + + +/* 4-bit for ABI signature, allow up to 16 ABIs */ +/* 0 is for OLD ABI V0, 1 is for V1, the rest is reserved */ +/* only old N1213HC use V0 */ +/* New ABI is used due to return register is changed to r0 from r5 */ +#define EF_NDS_ABI 0x000000F0 +#define E_NDS_ABI_V0 0x00000000 +#define E_NDS_ABI_V1 0x00000010 + +/* this flag signifies the version of Andes ELF */ +/* some more information may exist somewhere which is TBD */ +#define EF_NDS32_ELF_VERSION 0x0000000F + +/* Andes ELF Version 1.2 and before */ +#define E_NDS32_ELF_VER_1_2 0x0 +/* Andes ELF Version 1.3 and after */ +#define E_NDS32_ELF_VER_1_3 0x1 + /* NIOS relocations. */ #define R_NIOS_NONE 0 #define R_NIOS_32 1 /* A 32 bit absolute relocation.*/ diff --git a/ldso/ldso/nds32/dl-debug.h b/ldso/ldso/nds32/dl-debug.h new file mode 100644 index 0000000..ef4c57d --- /dev/null +++ b/ldso/ldso/nds32/dl-debug.h @@ -0,0 +1,25 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +static const char *_dl_reltypes_tab[] = +{ + [0] "R_NDS32_NONE", "R_NDS32_16", "R_NDS32_32", "R_NDS32_20", + [4] "R_NDS32_9_PCREL", "R_NDS32_15_PCREL", "R_NDS32_17_PCREL", "R_NDS32_25_PCREL", + [8] "R_NDS32_HI20", "R_NDS32_LO12S3", "R_NDS32_LO12S2", "R_NDS32_LO12S1", + [12] "R_NDS32_LO12S0", "R_NDS32_SDA15S3", "R_NDS32_SDA15S2", "R_NDS32_SDA15S1", + [16] "R_NDS32_SDA15S0", "R_NDS32_GNU_VTINHERIT", "R_NDS32_GNU_VTENTRY", "R_NDS32_16_RELA", + [20] "R_NDS32_32_RELA" "R_NDS32_20_RELA", "R_NDS32_9_PCREL_RELA", "R_NDS32_15_PCREL_RELA", + [24] "R_NDS32_17_PCREL_RELA", "R_NDS32_25_PCREL_RELA", "R_NDS32_HI20_RELA", "R_NDS32_LO12S3_RELA", + [28] "R_NDS32_LO12S2_RELA", "R_NDS32_LO12S1_RELA", "R_NDS32_LO12S0_RELA", "R_NDS32_SDA15S3_RELA", + [32] "R_NDS32_SDA15S2_RELA", "R_NDS32_SDA15S1_RELA", "R_NDS32_SDA15S0_RELA", "R_NDS32_RELA_GNU_VTINHERIT", + [36] "R_NDS32_RELA_GNU_VTENTRY", "R_NDS32_GOT20", "R_NDS32_25_PLTREL", "R_NDS32_COPY", + [40] "R_NDS32_GLOB_DAT", "R_NDS32_JMP_SLOT", "R_NDS32_RELATIVE", "R_NDS32_GOTOFF", + [44] "R_NDS32_GOTPC20", "R_NDS32_GOT_HI20", "R_NDS32_GOT_LO12", "R_NDS32_GOTPC_HI20", + [48] "R_NDS32_GOTPC_LO12", "R_NDS32_GOTOFF_HI20", "R_NDS32_GOTOFF_LO12", "R_NDS32_INSN16", + [52] "R_NDS32_LABEL", "R_NDS32_LONGCALL1", "R_NDS32_LONGCALL2", "R_NDS32_LONGCALL3", + [56] "R_NDS32_LONGJUMP1", "R_NDS32_LONGJUMP2", "R_NDS32_LONGJUMP3", "R_NDS32_LOADSTORE", + [60] "R_NDS32_9_FIXED_RELA", "R_NDS32_15_FIXED_RELA", "R_NDS32_17_FIXED_RELA", "R_NDS32_25_FIXED_RELA", + [64] "R_NDS32_PLTREL_HI20", "R_NDS32_PLTREL_LO12", "R_NDS32_PLT_GOTREL_HI20", "R_NDS32_PLT_GOTREL_LO12", +}; diff --git a/ldso/ldso/nds32/dl-startup.h b/ldso/ldso/nds32/dl-startup.h new file mode 100644 index 0000000..f700531 --- /dev/null +++ b/ldso/ldso/nds32/dl-startup.h @@ -0,0 +1,175 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +/* Need bootstrap relocations */ +#define ARCH_NEEDS_BOOTSTRAP_RELOCS + +#if defined(NDS32_ABI_2) || defined(NDS32_ABI_2FP) +# define STACK_PUSH +# define STACK_POP +#else +# define STACK_PUSH "addi $sp, $sp, -24" +# define STACK_POP "addi $sp, $sp, 24" +#endif + + +#ifdef __NDS32_N1213_43U1H__ +__asm__("\ + .text\n\ + .globl _start\n\ + .globl _dl_start\n\ + .globl _dl_start_user\n\ + .type _start,#function\n\ + .type _dl_start,#function\n\ + .type _dl_start_user,#function\n\ + .align 4\n\ + .pic\n\ +1:\n\ + ret\n\ +_start:\n\ + ! we are PIC code, so get global offset table\n\ + jal 1b\n\ + sethi $gp, HI20(_GLOBAL_OFFSET_TABLE_)\n\ + ori $gp, $gp, LO12(_GLOBAL_OFFSET_TABLE_+4)\n\ + add $gp, $lp, $gp\n\ +\n\ + ! at start time, all the args are on the stack\n\ + addi $r0, $sp, 0\n\ + ! adjust stack\n\ + !addi $sp, $sp, -24\n\ + "STACK_PUSH"\n\ + bal _dl_start@PLT\n\ + ! save user entry point in r6\n\ + addi $r6, $r0, 0\n\ + ! adjust sp and reload registers\n\ + !addi $sp, $sp, 24\n\ + "STACK_POP"\n\ +\n\ +_dl_start_user:\n\ +\n\ + ! See if we were run as a command with the executable file\n\ + ! name as an extra leading argument.\n\ + ! skip these arguments\n\ + l.w $r2, _dl_skip_args@GOTOFF ! args to skip\n\ + lwi $r0, [$sp+0] ! original argc\n\ + slli $r1, $r2, 2 ! offset for new sp\n\ + add $sp, $sp, $r1 ! adjust sp to skip args\n\ + sub $r0, $r0, $r2 ! set new argc\n\ + swi $r0, [$sp+0] ! save new argc\n\ +\n\ + ! load address of _dl_fini finalizer function\n\ + la $r5, _dl_fini@GOTOFF\n\ + ! jump to the user_s entry point\n\ + addi $r15, $r6, 0\n\ + jr $r15\n\ + .size _dl_start_user, . - _dl_start_user\n\ + .previous\n\ +"); +#else +__asm__("\ + .text\n\ + .globl _start\n\ + .globl _dl_start\n\ + .globl _dl_start_user\n\ + .type _start,#function\n\ + .type _dl_start,#function\n\ + .type _dl_start_user,#function\n\ + .align 4\n\ + .pic\n\ +_start:\n\ + ! we are PIC code, so get global offset table\n\ + mfusr $r15, $PC \n\ + sethi $gp, HI20(_GLOBAL_OFFSET_TABLE_ + 4)\n\ + ori $gp, $gp, LO12(_GLOBAL_OFFSET_TABLE_ + 8)\n\ + add $gp, $r15, $gp\n\ +\n\ + ! at start time, all the args are on the stack\n\ + addi $r0, $sp, 0\n\ + ! adjust stack\n\ + !addi $sp, $sp, -24\n\ + "STACK_PUSH"\n\ + bal _dl_start@PLT\n\ + ! save user entry point in r6\n\ + addi $r6, $r0, 0\n\ + ! adjust sp and reload registers\n\ + !addi $sp, $sp, 24\n\ + "STACK_POP"\n\ +\n\ +_dl_start_user:\n\ + ! See if we were run as a command with the executable file\n\ + ! name as an extra leading argument.\n\ + ! skip these arguments\n\ + l.w $r2, _dl_skip_args@GOTOFF ! args to skip\n\ + lwi $r0, [$sp+0] ! original argc\n\ + slli $r1, $r2, 2 ! offset for new sp\n\ + add $sp, $sp, $r1 ! adjust sp to skip args\n\ + sub $r0, $r0, $r2 ! set new argc\n\ + swi $r0, [$sp+0] ! save new argc\n\ +\n\ + ! load address of _dl_fini finalizer function\n\ + la $r5, _dl_fini@GOTOFF\n\ + ! jump to the user_s entry point\n\ + jr $r6\n\ + .size _dl_start_user, . - _dl_start_user\n\ + .previous\n\ +"); +#endif + +#define COPY_UNALIGNED_WORD(swp, twp, align) \ + { \ + void *__s = (swp), *__t = (twp); \ + unsigned char *__s1 = __s, *__t1 = __t; \ + unsigned short *__s2 = __s, *__t2 = __t; \ + unsigned long *__s4 = __s, *__t4 = __t; \ + switch ((align)) \ + { \ + case 0: \ + *__t4 = *__s4; \ + break; \ + case 2: \ + *__t2++ = *__s2++; \ + *__t2 = *__s2; \ + break; \ + default: \ + *__t1++ = *__s1++; \ + *__t1++ = *__s1++; \ + *__t1++ = *__s1++; \ + *__t1 = *__s1; \ + break; \ + } \ + } + +/* Get a pointer to the argv array. On many platforms this can be just + * the address if the first argument, on other platforms we need to + * do something a little more subtle here. */ +#define GET_ARGV(ARGVP, ARGS) ARGVP = (((unsigned long*)ARGS)+1) + +/* Handle relocation of the symbols in the dynamic loader. */ +static __always_inline +void PERFORM_BOOTSTRAP_RELOC(ELF_RELOC *rpnt, unsigned long *reloc_addr, + unsigned long symbol_addr, unsigned long load_addr, Elf32_Sym *symtab) +{ + Elf32_Addr value; + switch (ELF32_R_TYPE(rpnt->r_info)) { + case R_NDS32_NONE: + break; + case R_NDS32_32: + case R_NDS32_GLOB_DAT: + case R_NDS32_JMP_SLOT: + *reloc_addr = symbol_addr + rpnt->r_addend; + break; + case R_NDS32_32_RELA: + value = symbol_addr + rpnt->r_addend; + COPY_UNALIGNED_WORD (&value, reloc_addr, (int) reloc_addr & 3); + break; +#undef COPY_UNALIGNED_WORD + case R_NDS32_RELATIVE: + *reloc_addr = load_addr + rpnt->r_addend; + break; + default: + SEND_STDERR("Unsupported relocation type\n"); + _dl_exit(1); + } +} diff --git a/ldso/ldso/nds32/dl-syscalls.h b/ldso/ldso/nds32/dl-syscalls.h new file mode 100644 index 0000000..54b8839 --- /dev/null +++ b/ldso/ldso/nds32/dl-syscalls.h @@ -0,0 +1,11 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +/* We can't use the real errno in ldso, since it has not yet + * been dynamicly linked in yet. */ +#include "sys/syscall.h" +extern int _dl_errno; +#undef __set_errno +#define __set_errno(X) {(_dl_errno) = (X);} diff --git a/ldso/ldso/nds32/dl-sysdep.h b/ldso/ldso/nds32/dl-sysdep.h new file mode 100644 index 0000000..c4a32ca --- /dev/null +++ b/ldso/ldso/nds32/dl-sysdep.h @@ -0,0 +1,99 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +/* Define this if the system uses RELOCA. */ +#define ELF_USES_RELOCA +#include <elf.h> +/* Initialization sequence for the GOT. */ +#define INIT_GOT(GOT_BASE,MODULE) \ +{ \ + GOT_BASE[2] = (unsigned long) _dl_linux_resolve; \ + GOT_BASE[1] = (unsigned long) MODULE; \ +} + +static __inline__ unsigned long nds32_modulus(unsigned long m, unsigned long p) +{ + unsigned long i,t,inc; + i=p; t=0; + while (!(i&(1<<31))) { + i<<=1; + t++; + } + t--; + for (inc=t;inc>2;inc--) { + i=p<<inc; + if (i&(1<<31)) + break; + while (m>=i) { + m-=i; + i<<=1; + if (i&(1<<31)) + break; + if (i<p) + break; + } + } + while (m>=p) { + m-=p; + } + return m; +} +#define do_rem(result, n, base) ((result) = nds32_modulus(n, base)) + +/* Here we define the magic numbers that this dynamic loader should accept */ +#define MAGIC1 EM_NDS32 +#undef MAGIC2 + +/* Used for error messages */ +#define ELF_TARGET "NDS32" + +struct elf_resolve; +unsigned long _dl_linux_resolver(struct elf_resolve * tpnt, int reloc_entry); + +/* ELF_RTYPE_CLASS_PLT iff TYPE describes relocation of a PLT entry, so + PLT entries should not be allowed to define the value. + ELF_RTYPE_CLASS_NOCOPY iff TYPE should not be allowed to resolve to one + of the main executable's symbols, as for a COPY reloc. */ +#define elf_machine_type_class(type) \ + ((((type) == R_NDS32_JMP_SLOT) * ELF_RTYPE_CLASS_PLT) \ + | (((type) == R_NDS32_COPY) * ELF_RTYPE_CLASS_COPY)) + +/* Return the link-time address of _DYNAMIC. Conveniently, this is the + first element of the GOT. We used to use the PIC register to do this + without a constant pool reference, but GCC 4.2 will use a pseudo-register + for the PIC base, so it may not be in r10. */ +static __inline__ Elf32_Addr __attribute__ ((unused)) +elf_machine_dynamic (void) +{ + Elf32_Addr link_addr; + __asm__ ( "l.w %0, _GLOBAL_OFFSET_TABLE_@GOTOFF": "=r" (link_addr) ); + return link_addr; +} + +/* Return the run-time load address of the shared object. */ +static __inline__ Elf32_Addr __attribute__ ((unused)) +elf_machine_load_address (void) +{ + /* It doesn't matter what variable this is, the reference never makes + it to assembly. We need a dummy reference to some global variable + via the GOT to make sure the compiler initialized %ebx in time. */ + + Elf32_Addr addr; + __asm__ ("la %0, _dl_start@GOTOFF\n" : "=r" (addr) ); + return addr - elf_machine_dynamic(); +} + +static __inline__ void +elf_machine_relative (Elf32_Addr load_off, const Elf32_Addr rel_addr, + Elf32_Word relative_count) +{ + Elf32_Rela * rpnt = (void *) rel_addr; + --rpnt; + do { + Elf32_Addr *const reloc_addr = (void *) (load_off + (++rpnt)->r_offset); + + *reloc_addr = load_off + rpnt->r_addend; + } while (--relative_count); +} diff --git a/ldso/ldso/nds32/elfinterp.c b/ldso/ldso/nds32/elfinterp.c new file mode 100644 index 0000000..bf5c901 --- /dev/null +++ b/ldso/ldso/nds32/elfinterp.c @@ -0,0 +1,315 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +/* NDS32 ELF shared library loader suppport + * + * Copyright (C) 2001-2004 Erik Andersen + * + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. The name of the above contributors may not be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* Program to load an ELF binary on a linux system, and run it. + References to symbols in sharable libraries can be resolved by either + an ELF sharable library or a linux style of shared library. */ + +/* Disclaimer: I have never seen any AT&T source code for SVr4, nor have + I ever taken any courses on internals. This program was developed using + information available through the book "UNIX SYSTEM V RELEASE 4, + Programmers guide: Ansi C and Programming Support Tools", which did + a more than adequate job of explaining everything required to get this + working. */ + +#include "ldso.h" + +extern int _dl_linux_resolve(void); + +unsigned long _dl_linux_resolver(struct elf_resolve *tpnt, int reloc_entry) +{ + int reloc_type; + ELF_RELOC *this_reloc; + char *strtab; + char *symname; + Elf32_Sym *symtab; + ELF_RELOC *rel_addr; + int symtab_index; + char *new_addr; + char **got_addr; + unsigned long instr_addr; + + rel_addr = (ELF_RELOC *) tpnt->dynamic_info[DT_JMPREL]; + + this_reloc = rel_addr + reloc_entry/sizeof(ELF_RELOC); + reloc_type = ELF32_R_TYPE(this_reloc->r_info); + symtab_index = ELF32_R_SYM(this_reloc->r_info); + + symtab = (Elf32_Sym *) tpnt->dynamic_info[DT_SYMTAB]; + strtab = (char *) tpnt->dynamic_info[DT_STRTAB]; + symname = strtab + symtab[symtab_index].st_name; + + if (unlikely(reloc_type != R_NDS32_JMP_SLOT)) { + _dl_dprintf(2, "%s: Incorrect relocation type in jump relocations\n", + _dl_progname); + _dl_exit(1); + } + + /* Address of jump instruction to fix up */ + instr_addr = ((unsigned long) this_reloc->r_offset + + (unsigned long) tpnt->loadaddr); + got_addr = (char **) instr_addr; + + /* Get the address of the GOT entry */ + new_addr = _dl_find_hash(symname, &_dl_loaded_modules->symbol_scope, tpnt, + ELF_RTYPE_CLASS_PLT, NULL); + if (unlikely(!new_addr)) { + _dl_dprintf(2, "%s: can't resolve symbol '%s'\n", + _dl_progname, symname); + _dl_exit(1); + } +#if defined (__SUPPORT_LD_DEBUG__) + if ((unsigned long) got_addr < 0x40000000) + { + if (_dl_debug_bindings) + { + _dl_dprintf(_dl_debug_file, "\nresolve function: %s", symname); + if (_dl_debug_detail) _dl_dprintf(_dl_debug_file, + "\tpatch %x ==> %x @ %x", *got_addr, new_addr, got_addr); + } + } + if (!_dl_debug_nofixups) { + *got_addr = new_addr; + } +#else + *got_addr = new_addr; +#endif + + return (unsigned long) new_addr; +} + +static int +_dl_parse(struct elf_resolve *tpnt, struct r_scope_elem *scope, + unsigned long rel_addr, unsigned long rel_size, + int (*reloc_fnc) (struct elf_resolve *tpnt, struct r_scope_elem *scope, + ELF_RELOC *rpnt, ElfW(Sym) *symtab, char *strtab)) +{ + int symtab_index; + int i; + char *strtab; + int goof = 0; + ElfW(Sym) *symtab; + ELF_RELOC *rpnt; + + /* Now parse the relocation information */ + rpnt = (ELF_RELOC *) rel_addr; + rel_size = rel_size / sizeof(ELF_RELOC); + + symtab = (Elf32_Sym *) tpnt->dynamic_info[DT_SYMTAB]; + strtab = (char *) tpnt->dynamic_info[DT_STRTAB]; + + for (i = 0; i < rel_size; i++, rpnt++) { + int res; + + symtab_index = ELF32_R_SYM(rpnt->r_info); + + debug_sym(symtab,strtab,symtab_index); + debug_reloc(symtab,strtab,rpnt); + + res = reloc_fnc (tpnt, scope, rpnt, symtab, strtab); + + if (res==0) continue; + + _dl_dprintf(2, "\n%s: ",_dl_progname); + + if (symtab_index) + _dl_dprintf(2, "symbol '%s': ", strtab + symtab[symtab_index].st_name); + + if (unlikely(res <0)) + { + int reloc_type = ELF32_R_TYPE(rpnt->r_info); +#if defined (__SUPPORT_LD_DEBUG__) + _dl_dprintf(2, "can't handle reloc type %s\n ", _dl_reltypes(reloc_type)); +#else + _dl_dprintf(2, "can't handle reloc type %x\n", reloc_type); +#endif + _dl_exit(-res); + } + if (unlikely(res >0)) + { + _dl_dprintf(2, "can't resolve symbol\n"); + goof += res; + } + } + return goof; +} + + +static int +_dl_do_reloc (struct elf_resolve *tpnt, struct r_scope_elem *scope, + ELF_RELOC *rpnt, ElfW(Sym) *symtab, char *strtab) +{ + int reloc_type; + int symtab_index; + char *symname = NULL; + unsigned long *reloc_addr; + unsigned long symbol_addr; + int goof = 0; + struct symbol_ref sym_ref; + + reloc_addr = (unsigned long *) (tpnt->loadaddr + (unsigned long) rpnt->r_offset); + reloc_type = ELF32_R_TYPE(rpnt->r_info); + symtab_index = ELF32_R_SYM(rpnt->r_info); + symbol_addr = 0; + sym_ref.sym = &symtab[symtab_index]; + sym_ref.tpnt = NULL; + + if (symtab_index) { + symname = strtab + symtab[symtab_index].st_name; + symbol_addr = (unsigned long)_dl_find_hash(symname, scope, tpnt, + elf_machine_type_class(reloc_type), &sym_ref); + + /* + * We want to allow undefined references to weak symbols - this might + * have been intentional. We should not be linking local symbols + * here, so all bases should be covered. + */ + if (!symbol_addr && ELF32_ST_BIND(symtab[symtab_index].st_info) != STB_WEAK) { + _dl_dprintf (2, "%s: can't resolve symbol '%s'\n", + _dl_progname, strtab + symtab[symtab_index].st_name); + _dl_exit (1); + } + } + +#define COPY_UNALIGNED_WORD(swp, twp, align) \ + { \ + void *__s = (swp), *__t = (twp); \ + unsigned char *__s1 = __s, *__t1 = __t; \ + unsigned short *__s2 = __s, *__t2 = __t; \ + unsigned long *__s4 = __s, *__t4 = __t; \ + switch ((align)) \ + { \ + case 0: \ + *__t4 = *__s4; \ + break; \ + case 2: \ + *__t2++ = *__s2++; \ + *__t2 = *__s2; \ + break; \ + default: \ + *__t1++ = *__s1++; \ + *__t1++ = *__s1++; \ + *__t1++ = *__s1++; \ + *__t1 = *__s1; \ + break; \ + } \ + } + +#if defined (__SUPPORT_LD_DEBUG__) + { + unsigned long old_val = *reloc_addr; +#endif + symbol_addr += rpnt->r_addend ; + switch (reloc_type) { + case R_NDS32_NONE: + break; + case R_NDS32_32: + case R_NDS32_GLOB_DAT: + case R_NDS32_JMP_SLOT: + *reloc_addr = symbol_addr; + break; + case R_NDS32_32_RELA: + COPY_UNALIGNED_WORD (&symbol_addr, reloc_addr,(int) reloc_addr & 3); + break; +#undef COPY_UNALIGNED_WORD + case R_NDS32_RELATIVE: + *reloc_addr = (unsigned long) tpnt->loadaddr + rpnt->r_addend; + break; + case R_NDS32_COPY: + _dl_memcpy((void *) reloc_addr, + (void *) symbol_addr, symtab[symtab_index].st_size); + break; + default: + return -1; /*call _dl_exit(1) */ + } +#if defined (__SUPPORT_LD_DEBUG__) + if (_dl_debug_reloc && _dl_debug_detail) + _dl_dprintf(_dl_debug_file, "\tpatch: %x ==> %x @ %x", old_val, *reloc_addr, reloc_addr); + } + +#endif + + return goof; +} + +static int +_dl_do_lazy_reloc (struct elf_resolve *tpnt, struct r_scope_elem *scope, + ELF_RELOC *rpnt, ElfW(Sym) *symtab, char *strtab) +{ + int reloc_type; + unsigned long *reloc_addr; + + reloc_addr = (unsigned long *) (tpnt->loadaddr + (unsigned long) rpnt->r_offset); + reloc_type = ELF32_R_TYPE(rpnt->r_info); + +#if defined (__SUPPORT_LD_DEBUG__) + { + unsigned long old_val = *reloc_addr; +#endif + switch (reloc_type) { + case R_NDS32_NONE: + break; + case R_NDS32_JMP_SLOT: + *reloc_addr += (unsigned long) tpnt->loadaddr; + break; + default: + return -1; /*call _dl_exit(1) */ + } +#if defined (__SUPPORT_LD_DEBUG__) + if (_dl_debug_reloc && _dl_debug_detail) + _dl_dprintf(_dl_debug_file, "\tpatch: %x ==> %x @ %x", old_val, *reloc_addr, reloc_addr); + } + +#endif + return 0; + +} + +void +_dl_parse_lazy_relocation_information(struct dyn_elf *rpnt, + unsigned long rel_addr, + unsigned long rel_size) +{ + _dl_parse(rpnt->dyn, NULL, rel_addr, rel_size, _dl_do_lazy_reloc); +} + +int +_dl_parse_relocation_information(struct dyn_elf *rpnt, + struct r_scope_elem *scope, + unsigned long rel_addr, + unsigned long rel_size) +{ + return _dl_parse(rpnt->dyn, scope, rel_addr, + rel_size, _dl_do_reloc); +} + diff --git a/ldso/ldso/nds32/resolve.S b/ldso/ldso/nds32/resolve.S new file mode 100644 index 0000000..8c53850 --- /dev/null +++ b/ldso/ldso/nds32/resolve.S @@ -0,0 +1,76 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +#if defined(NDS32_ABI_2) || defined(NDS32_ABI_2FP) +# define STACK_PUSH +# define STACK_POP +#else +# define STACK_PUSH addi $sp, $sp, -24 +# define STACK_POP addi $sp, $sp, 24 +#endif + + .text + .align 4 ! 16 byte boundary + .globl _dl_linux_resolve + .type _dl_linux_resolve,#function + .pic + +_dl_linux_resolve: + ! we get called with + ! lp contains the return address from this call + ! r16 contains offset to target reloc entry + ! r17 contains GOT[1] (identity of taget lib) + ! ta is GOT[2] (starting address of this function) + + ! save arguments r0 - r5 and gp, lp + smw.adm $r0, [$sp], $r5, 6 + + ! init gp +#ifdef __NDS32_N1213_43U1H__ + sethi $gp, HI20(_GLOBAL_OFFSET_TABLE_+4) + ori $gp, $gp, LO12(_GLOBAL_OFFSET_TABLE_+8) + add $gp, $ta, $gp +#else + mfusr $ta, $PC + sethi $gp, HI20(_GLOBAL_OFFSET_TABLE_+4) + ori $gp, $gp, LO12(_GLOBAL_OFFSET_TABLE_+8) + add $gp, $ta, $gp +#endif + + ! #ifdef __NDS32_ABI_1__ + ! adjust stack + !addi $sp, $sp, -24 + STACK_PUSH + ! #endif + + ! set arguments + addi $r0, $r17, 0 + !addi $r1, $r16, 0 + slli $r1, $r16, 2 + slli $r16, $r16, 3 + add $r1, $r1, $r16 + + ! comment out profiling argument + !addi $r2, $lp, 0 + + ! call fixup routine + bal _dl_linux_resolver@PLT + + ! save the return + addi $ta, $r0, 0 + + ! #ifdef __NDS32_ABI_1__ + ! adjust sp + !addi $sp, $sp, 24 + STACK_POP + ! #endif + + ! reload registers + lmw.bim $r0, [$sp], $r5, 6 + + ! jump to the newly found address + jr $ta + +.size _dl_linux_resolve, .-_dl_linux_resolve diff --git a/libc/string/xtensa/Makefile b/libc/string/nds32/Makefile similarity index 100% copy from libc/string/xtensa/Makefile copy to libc/string/nds32/Makefile diff --git a/libc/string/nds32/memcpy.S b/libc/string/nds32/memcpy.S new file mode 100644 index 0000000..4f285b5 --- /dev/null +++ b/libc/string/nds32/memcpy.S @@ -0,0 +1,88 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +#include <sysdep.h> +!========================================================== +! void *memcpy(void *dst, const void *src, int n); +! +! dst: $r0 +! src: $r1 +! n : $r2 +! ret: $r0 - pointer to the memory area dst. +!========================================================== +.weak memcpy +ENTRY(memcpy) + move $r5, $r0 + beq $r0, $r1, .Lquit_memcpy + beqz $r2, .Lquit_memcpy + srli $r3, $r2, #5 ! check if len < cache-line size 32 + beqz $r3, .Lword_copy_entry + andi $r4, $r0, #0x3 ! check byte-align + beqz $r4, .Lunalign_word_copy_entry + + addi $r4, $r4, #-4 + abs $r4, $r4 ! check how many un-align byte to copy + sub $r2, $r2, $r4 ! update $R2 + +.Lunalign_byte_copy: + lbi.bi $r3, [$r1], #1 + addi $r4, $r4, #-1 + sbi.bi $r3, [$r0], #1 + bnez $r4, .Lunalign_byte_copy + beqz $r2, .Lquit_memcpy + +.Lunalign_word_copy_entry: + andi $r3, $r0, 0x1f ! check cache-line unaligncount + beqz $r3, .Lcache_copy + + addi $r3, $r3, #-32 + abs $r3, $r3 + sub $r2, $r2, $r3 ! update $R2 + +.Lunalign_word_copy: + lmw.bim $r4, [$r1], $r4 + addi $r3, $r3, #-4 + smw.bim $r4, [$r0], $r4 + bnez $r3, .Lunalign_word_copy + beqz $r2, .Lquit_memcpy + + addi $r3, $r2, #-32 ! to check $r2 < cache_line, than go to .Lword_copy + bltz $r3, .Lword_copy_entry +.Lcache_copy: + srli $r3, $r2, #5 + beqz $r3, .Lword_copy_entry + pushm $r6, $r13 +.L3: + lmw.bim $r6, [$r1], $r13 + addi $r3, $r3, #-1 + smw.bim $r6, [$r0], $r13 + bnez $r3, .L3 + popm $r6, $r13 + +.Lword_copy_entry: + andi $r2, $r2, #31 + beqz $r2, .Lquit_memcpy + srli $r3, $r2, #2 + beqz $r3, .Lbyte_copy +.Lword_copy: + lmw.bim $r4, [$r1], $r4 + addi $r3, $r3, #-1 + smw.bim $r4, [$r0], $r4 + bnez $r3, .Lword_copy + andi $r2, $r2, #3 + beqz $r2, .Lquit_memcpy + +.Lbyte_copy: + lbi.bi $r3, [$r1], #1 + addi $r2, $r2, #-1 + sbi.bi $r3, [$r0], #1 + bnez $r2, .Lbyte_copy + +.Lquit_memcpy: + move $r0, $r5 + ret + +END(memcpy) +libc_hidden_def(memcpy) diff --git a/libc/string/nds32/memset.S b/libc/string/nds32/memset.S new file mode 100644 index 0000000..edd15a4 --- /dev/null +++ b/libc/string/nds32/memset.S @@ -0,0 +1,66 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +/* Copyright (C) 1998, 2003 Free Software Foundation, Inc. + * Contributed by Philip Blundell &lt;philb(a)gnu.org&gt; + * + * The GNU C Library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * The GNU C Library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with the GNU C Library; if not, write to the Free + * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + * 02111-1307 USA. + */ + +#include <features.h> +#include <sysdep.h> +!========================================================== +! void *memset(void *dst, int val, int len); +! +! dst: $r0 +! val: $r1 +! len: $r2 +! ret: $r0 - pointer to the memory area dst. +!========================================================== +.weak memset +ENTRY(memset) + move $r5, $r0 ! Return value + beqz $r2, .Lend_memset ! Exit when len = 0 + srli $r3, $r2, 2 ! r3 is how many words to copy + andi $r2, $r2, 3 ! How many bytes are less than a word + beqz $r3, .Lbyte_set ! When n is less than a word + + ! set r1 from to abababab + andi $r1, $r1, 0x00ff ! r1 = 000000ab + slli $r4, $r1, 8 ! r4 = 0000ab00 + or $r1, $r1, $r4 ! r1 = 0000abab + slli $r4, $r1, 16 ! r4 = abab0000 + or $r1, $r1, $r4 ! r1 = abababab + +.Lword_set: + addi $r3, $r3, -1 ! How many words left to copy + smw.bim $r1, [$r5], $r1 ! Copy the word to det + bnez $r3, .Lword_set ! Still words to set, continue looping + beqz $r2, .Lend_memset ! No left byte to set + +.Lbyte_set: + ! Less than 4 bytes left to set + addi $r2, $r2, -1 ! Decrease len by 1 + sbi.p $r1, [$r5], 1 ! Set data of the next byte to r1 + bnez $r2, .Lbyte_set ! Still bytes left to set + +.Lend_memset: + ret + +END(memset) +libc_hidden_def(memset) diff --git a/libc/sysdeps/linux/xtensa/Makefile b/libc/sysdeps/linux/nds32/Makefile similarity index 100% copy from libc/sysdeps/linux/xtensa/Makefile copy to libc/sysdeps/linux/nds32/Makefile diff --git a/libc/sysdeps/linux/nds32/Makefile.arch b/libc/sysdeps/linux/nds32/Makefile.arch new file mode 100644 index 0000000..8691875 --- /dev/null +++ b/libc/sysdeps/linux/nds32/Makefile.arch @@ -0,0 +1,5 @@ +# Copyright (C) 2016 Andes Technology, Inc. +# Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + +CSRC-y := brk.c sigaction.c +SSRC-y := setjmp.S __longjmp.S bsd-setjmp.S bsd-_setjmp.S clone.S mmap.S sigrestorer.S vfork.S sysdep.S syscall.S diff --git a/libc/sysdeps/linux/nds32/__longjmp.S b/libc/sysdeps/linux/nds32/__longjmp.S new file mode 100644 index 0000000..fbea6f6 --- /dev/null +++ b/libc/sysdeps/linux/nds32/__longjmp.S @@ -0,0 +1,90 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +/* + setjmp/longjmp for nds32. + r0 - r5 are for paramter passing - no need to save + r6 - r14 are callee saved - needs to save + r15 is temp register for assembler - no need to save + r16 - r25 are caller saved - no need to save + r26 - r27 are temp registers for OS - no need to save + r28 is fp - need to save + r29 is gp - need to save + r30 is ra - need to save + r31 is sp - need to save + so we need to save r6 - r14 and r28 - r31 + The jmpbuf looks like this: + r6 + r7 + r8 + r9 + r10 + r11 + r12 + r13 + r14 + fp + gp + ra + sp +#ifdef NDS32_ABI_2FP_PLUS + ($fpcfg.freg) + (callee-saved FPU regs) +#endif + reserved(for 8-byte align if needed) +*/ + +#include <sysdep.h> +#define _SETJMP_H +#define _ASM +#include <bits/setjmp.h> + .section .text + +/* __longjmp (env[0].__jmpbuf, val ?: 1); */ +ENTRY(__longjmp) + ! restore registers + lmw.bim $r6, [$r0], $r14, #0xf + +#ifdef NDS32_ABI_2FP_PLUS + lwi.bi $r20, [$r0], #4 /* Load $fpcfg.freg to $r20. */ + + /* Case switch for $r20 as $fpcfg.freg. */ + beqz $r20, .LCFG0 /* Branch if $fpcfg.freg = 0b00. */ + xori $r15, $r20, #0b10 + beqz $r15, .LCFG2 /* Branch if $fpcfg.freg = 0b10. */ + srli $r20, $r20, #0b01 + beqz $r20, .LCFG1 /* Branch if $fpcfg.freg = 0b01. */ + /* Fall-through if $fpcfg.freg = 0b11. */ +.LCFG3: + fldi.bi $fd31, [$r0], #8 + fldi.bi $fd30, [$r0], #8 + fldi.bi $fd29, [$r0], #8 + fldi.bi $fd28, [$r0], #8 + fldi.bi $fd27, [$r0], #8 + fldi.bi $fd26, [$r0], #8 + fldi.bi $fd25, [$r0], #8 + fldi.bi $fd24, [$r0], #8 +.LCFG2: + fldi.bi $fd10, [$r0], #8 + fldi.bi $fd9, [$r0], #8 + fldi.bi $fd8, [$r0], #8 +.LCFG1: + fldi.bi $fd7, [$r0], #8 + fldi.bi $fd6, [$r0], #8 + fldi.bi $fd5, [$r0], #8 + fldi.bi $fd4, [$r0], #8 +.LCFG0: + fldi.bi $fd3, [$r0], #8 +#endif /* NDS32_ABI_2FP_PLUS */ + + + ! return error code; make sure error code is not 0 + bnez $r1, .Ldone + movi $r1, #1 +.Ldone: + addi $r0, $r1, #0 + ret +END(__longjmp) +libc_hidden_def(__longjmp) diff --git a/libc/sysdeps/linux/nds32/__syscall_error.c b/libc/sysdeps/linux/nds32/__syscall_error.c new file mode 100644 index 0000000..2aa6903 --- /dev/null +++ b/libc/sysdeps/linux/nds32/__syscall_error.c @@ -0,0 +1,16 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +#include <errno.h> +#include <features.h> + +/* This routine is jumped to by all the syscall handlers, to stash + * an error number into errno. */ +int __syscall_error(int err_no) attribute_hidden; +int __syscall_error(int err_no) +{ + __set_errno(err_no); + return -1; +} diff --git a/libc/sysdeps/linux/nds32/bits/byteswap.h b/libc/sysdeps/linux/nds32/bits/byteswap.h new file mode 100644 index 0000000..0f43cbb --- /dev/null +++ b/libc/sysdeps/linux/nds32/bits/byteswap.h @@ -0,0 +1,121 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +/* Macros to swap the order of bytes in integer values. + Copyright (C) 1997, 1998, 2000, 2002, 2003, 2006, 2007 + Free Software Foundation, Inc. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#if !defined _BYTESWAP_H && !defined _NETINET_IN_H +# error "Never use <bits/byteswap.h> directly; include <byteswap.h> instead." +#endif + +#ifndef _BITS_BYTESWAP_H +#define _BITS_BYTESWAP_H 1 + +/* Swap bytes in 16 bit value. */ +#define __bswap_constant_16(x) \ + ((((x) >> 8) & 0xff) | (((x) & 0xff) << 8)) + +#ifdef __GNUC__ +# if __GNUC__ >= 2 +# define __bswap_16(x) \ + (__extension__ \ + ({ register unsigned short int __v, __x = (x); \ + if (__builtin_constant_p (__x)) \ + __v = __bswap_constant_16 (__x); \ + else \ + __asm__ ("wsbh %0, %0\n\t" \ + : "=r" (__v) \ + : "0" (__x)); \ + __v; })) +# else +/* This is better than nothing. */ +# define __bswap_16(x) \ + (__extension__ \ + ({ register unsigned short int __x = (x); __bswap_constant_16 (__x); })) +# endif +#else +static __inline unsigned short int +__bswap_16 (unsigned short int __bsx) +{ + return __bswap_constant_16 (__bsx); +} +#endif + +/* Swap bytes in 32 bit value. */ +#define __bswap_constant_32(x) \ + ((((x) & 0xff000000) >> 24) | (((x) & 0x00ff0000) >> 8) | \ + (((x) & 0x0000ff00) << 8) | (((x) & 0x000000ff) << 24)) + +#ifdef __GNUC__ +# if __GNUC__ >= 2 +# define __bswap_32(x) \ + (__extension__ \ + ({ register unsigned int __v, __x = (x); \ + if (__builtin_constant_p (__x)) \ + __v = __bswap_constant_32 (__x); \ + else \ + __asm__ ("wsbh %0, %0\n\t" \ + "rotri %0, %0, #16\n\t" \ + : "=r" (__v) \ + : "0" (__x)); \ + __v; })) +# else +# define __bswap_32(x) \ + (__extension__ \ + ({ register unsigned int __x = (x); __bswap_constant_32 (__x); })) +# endif +#else +static __inline unsigned int +__bswap_32 (unsigned int __bsx) +{ + return __bswap_constant_32 (__bsx); +} +#endif + + +#if defined __GNUC__ && __GNUC__ >= 2 +/* Swap bytes in 64 bit value. */ +#define __bswap_constant_64(x) \ + ((((x) & 0xff00000000000000ull) >> 56) \ + | (((x) & 0x00ff000000000000ull) >> 40) \ + | (((x) & 0x0000ff0000000000ull) >> 24) \ + | (((x) & 0x000000ff00000000ull) >> 8) \ + | (((x) & 0x00000000ff000000ull) << 8) \ + | (((x) & 0x0000000000ff0000ull) << 24) \ + | (((x) & 0x000000000000ff00ull) << 40) \ + | (((x) & 0x00000000000000ffull) << 56)) + +# define __bswap_64(x) \ + (__extension__ \ + ({ union { __extension__ unsigned long long int __ll; \ + unsigned long int __l[2]; } __w, __r; \ + if (__builtin_constant_p (x)) \ + __r.__ll = __bswap_constant_64 (x); \ + else \ + { \ + __w.__ll = (x); \ + __r.__l[0] = __bswap_32 (__w.__l[1]); \ + __r.__l[1] = __bswap_32 (__w.__l[0]); \ + } \ + __r.__ll; })) +#endif + +#endif /* _BITS_BYTESWAP_H */ diff --git a/libc/sysdeps/linux/nds32/bits/endian.h b/libc/sysdeps/linux/nds32/bits/endian.h new file mode 100644 index 0000000..989d752 --- /dev/null +++ b/libc/sysdeps/linux/nds32/bits/endian.h @@ -0,0 +1,16 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +#ifndef _ENDIAN_H +# error "Never use <bits/endian.h> directly; include <endian.h> instead." +#endif /* _ENDIAN_H */ + +#ifdef __NDS32_EB__ +#define __BYTE_ORDER __BIG_ENDIAN +#else /* ! __NDS32_EB__ */ +#define __BYTE_ORDER __LITTLE_ENDIAN +#endif /* ! __NDS32_EB__ */ + +#define __FLOAT_WORD_ORDER __BYTE_ORDER diff --git a/libc/sysdeps/linux/xtensa/bits/fcntl.h b/libc/sysdeps/linux/nds32/bits/fcntl.h similarity index 100% copy from libc/sysdeps/linux/xtensa/bits/fcntl.h copy to libc/sysdeps/linux/nds32/bits/fcntl.h diff --git a/libc/sysdeps/linux/nds32/bits/kernel_stat.h b/libc/sysdeps/linux/nds32/bits/kernel_stat.h new file mode 100644 index 0000000..9e5c40d --- /dev/null +++ b/libc/sysdeps/linux/nds32/bits/kernel_stat.h @@ -0,0 +1,57 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +#ifndef _BITS_STAT_STRUCT_H +#define _BITS_STAT_STRUCT_H + +struct kernel_stat { +#if defined(__NDS32_EB__) + unsigned short st_dev; + unsigned short __pad1; +#else + unsigned long st_dev; +#endif + unsigned long st_ino; + unsigned short st_mode; + unsigned short st_nlink; + unsigned short st_uid; + unsigned short st_gid; +#if defined(__NDS32_EB__) + unsigned short st_rdev; + unsigned short __pad2; +#else + unsigned long st_rdev; +#endif + unsigned long st_size; + unsigned long st_blksize; + unsigned long st_blocks; + struct timespec st_atim; + struct timespec st_mtim; + struct timespec st_ctim; + unsigned long __unused4; + unsigned long __unused5; +}; + +struct kernel_stat64 { + unsigned long long st_dev; + unsigned long __pad0; +#define STAT64_HAS_BROKEN_ST_INO 1 + unsigned long __st_ino; + unsigned int st_mode; + unsigned int st_nlink; + unsigned long st_uid; + unsigned long st_gid; + unsigned long long st_rdev; + unsigned int __pad3; + unsigned long long st_size; + unsigned long st_blksize; + unsigned long long st_blocks; // Number 512-byte blocks allocated. + struct timespec st_atim; /* Time of last access. */ + struct timespec st_mtim; /* Time of last modification. */ + struct timespec st_ctim; /* Time of last status change. */ + unsigned long long st_ino; +}; + +#endif /* _BITS_STAT_STRUCT_H */ diff --git a/libc/sysdeps/linux/nds32/bits/kernel_types.h b/libc/sysdeps/linux/nds32/bits/kernel_types.h new file mode 100644 index 0000000..1b6ae4d --- /dev/null +++ b/libc/sysdeps/linux/nds32/bits/kernel_types.h @@ -0,0 +1,52 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +#ifndef __ARCH_NDS32_POSIX_TYPES_H +#define __ARCH_NDS32_POSIX_TYPES_H + +/* + * This file is generally used by user-level software, so you need to + * be a little careful about namespace pollution etc. Also, we cannot + * assume GCC is being used. + */ + +typedef unsigned short __kernel_dev_t; +typedef unsigned long __kernel_ino_t; +typedef unsigned short __kernel_mode_t; +typedef unsigned short __kernel_nlink_t; +typedef long __kernel_off_t; +typedef int __kernel_pid_t; +typedef unsigned short __kernel_ipc_pid_t; +typedef unsigned short __kernel_uid_t; +typedef unsigned short __kernel_gid_t; +typedef unsigned int __kernel_size_t; +typedef int __kernel_ssize_t; +typedef int __kernel_ptrdiff_t; +typedef long __kernel_time_t; +typedef long __kernel_suseconds_t; +typedef long __kernel_clock_t; +typedef int __kernel_daddr_t; +typedef char * __kernel_caddr_t; +typedef unsigned short __kernel_uid16_t; +typedef unsigned short __kernel_gid16_t; +typedef unsigned int __kernel_uid32_t; +typedef unsigned int __kernel_gid32_t; + +typedef unsigned short __kernel_old_uid_t; +typedef unsigned short __kernel_old_gid_t; +typedef __kernel_dev_t __kernel_old_dev_t; +typedef long __kernel_long_t; +typedef unsigned long __kernel_ulong_t; +__extension__ typedef long long __kernel_loff_t; + +typedef struct { +#ifdef __USE_ALL + int val[2]; +#else + int __val[2]; +#endif +} __kernel_fsid_t; + +#endif /* __ARCH_NDS32_POSIX_TYPES_H */ diff --git a/libc/sysdeps/linux/nds32/bits/mathdef.h b/libc/sysdeps/linux/nds32/bits/mathdef.h new file mode 100644 index 0000000..d0bac45 --- /dev/null +++ b/libc/sysdeps/linux/nds32/bits/mathdef.h @@ -0,0 +1,40 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +/* Copyright (C) 1999, 2000, 2004 Free Software Foundation, Inc. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#if !defined _MATH_H && !defined _COMPLEX_H +# error "Never use <bits/mathdef.h> directly; include <math.h> instead" +#endif + +#if defined __USE_ISOC99 && defined _MATH_H && !defined _MATH_H_MATHDEF +# define _MATH_H_MATHDEF 1 + +/* GCC does not promote `float' values to `double'. */ +typedef float float_t; /* `float' expressions are evaluated as + `float'. */ +typedef double double_t; /* `double' expressions are evaluated as + `double'. */ + +/* The values returned by `ilogb' for 0 and NaN respectively. */ +# define FP_ILOGB0 (-2147483647) +# define FP_ILOGBNAN (2147483647) + +#endif /* ISO C99 */ diff --git a/libc/sysdeps/linux/nds32/bits/mman.h b/libc/sysdeps/linux/nds32/bits/mman.h new file mode 100644 index 0000000..13f3e60 --- /dev/null +++ b/libc/sysdeps/linux/nds32/bits/mman.h @@ -0,0 +1,106 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +/* Definitions for POSIX memory map interface. Linux/NDS32 version. + Copyright (C) 1997, 2000, 2003, 2004 Free Software Foundation, Inc. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#ifndef _SYS_MMAN_H +# error "Never use <bits/mman.h> directly; include <sys/mman.h> instead." +#endif + +/* The following definitions basically come from the kernel headers. + But the kernel header is not namespace clean. */ + + +/* Protections are chosen from these bits, OR'd together. The + implementation does not necessarily support PROT_EXEC or PROT_WRITE + without PROT_READ. The only guarantees are that no writing will be + allowed without PROT_WRITE and no access will be allowed for PROT_NONE. */ + +#define PROT_READ 0x1 /* Page can be read. */ +#define PROT_WRITE 0x2 /* Page can be written. */ +#define PROT_EXEC 0x4 /* Page can be executed. */ +#define PROT_NONE 0x0 /* Page can not be accessed. */ +#define PROT_GROWSDOWN 0x01000000 /* Extend change to start of + growsdown vma (mprotect only). */ +#define PROT_GROWSUP 0x02000000 /* Extend change to start of + growsup vma (mprotect only). */ + +/* Sharing types (must choose one and only one of these). */ +#define MAP_SHARED 0x01 /* Share changes. */ +#define MAP_PRIVATE 0x02 /* Changes are private. */ +#ifdef __USE_MISC +# define MAP_TYPE 0x0f /* Mask for type of mapping. */ +#endif + +/* Other flags. */ +#define MAP_FIXED 0x10 /* Interpret addr exactly. */ +#ifdef __USE_MISC +# define MAP_FILE 0x00 +# define MAP_ANONYMOUS 0x20 /* Don't use a file. */ +# define MAP_ANON MAP_ANONYMOUS +# define MAP_RENAME MAP_ANONYMOUS +#endif + +/* These are Linux-specific. */ +#ifdef __USE_MISC +# define MAP_GROWSDOWN 0x0100 /* stack-like segment */ +# define MAP_DENYWRITE 0x0800 /* ETXTBSY */ +# define MAP_EXECUTABLE 0x1000 /* mark it as an executable */ +# define MAP_LOCKED 0x2000 /* pages are locked */ +# define MAP_NORESERVE 0x4000 /* don't check for reservations */ +# define MAP_POPULATE 0x08000 /* populate (prefault) pagetables */ +# define MAP_NONBLOCK 0x10000 /* do not block on IO */ +# define MAP_UNINITIALIZED 0x4000000 /* For anonymous mmap, memory could + be uninitialized. */ +#endif + +/* Flags to `msync'. */ +#define MS_ASYNC 1 /* Sync memory asynchronously. */ +#define MS_INVALIDATE 2 /* Invalidate the caches. */ +#define MS_SYNC 4 /* Synchronous memory sync. */ + +/* Flags for `mlockall'. */ +#define MCL_CURRENT 1 /* Lock all currently mapped pages. */ +#define MCL_FUTURE 2 /* Lock all additions to address + space. */ + +/* Advice to `madvise'. */ +#ifdef __USE_BSD +#define MADV_NORMAL 0 /* default page-in behavior */ +#define MADV_RANDOM 1 /* page-in minimum required */ +#define MADV_SEQUENTIAL 2 /* read-ahead aggressively */ +#define MADV_WILLNEED 3 /* pre-fault pages */ +#define MADV_DONTNEED 4 /* discard these pages */ +#endif + +/* The POSIX people had to invent similar names for the same things. */ +#ifdef __USE_XOPEN2K +# define POSIX_MADV_NORMAL 0 /* No further special treatment. */ +# define POSIX_MADV_RANDOM 1 /* Expect random page references. */ +# define POSIX_MADV_SEQUENTIAL 2 /* Expect sequential page references. */ +# define POSIX_MADV_WILLNEED 3 /* Will need these pages. */ +# define POSIX_MADV_DONTNEED 4 /* Don't need these pages. */ +#endif + +/* Flags for `mremap'. */ +#ifdef __USE_GNU +# define MREMAP_MAYMOVE 1 +#endif diff --git a/libc/sysdeps/linux/nds32/bits/setjmp.h b/libc/sysdeps/linux/nds32/bits/setjmp.h new file mode 100644 index 0000000..92d8900 --- /dev/null +++ b/libc/sysdeps/linux/nds32/bits/setjmp.h @@ -0,0 +1,42 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +/* Copyright (C) 2003, 2004 Free Software Foundation, Inc. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +/* Define the machine-dependent type `jmp_buf'. NDS32 version. */ +#ifndef _BITS_SETJMP_H +#define _BITS_SETJMP_H 1 + +#ifndef _SETJMP_H +# error "Never include <bits/setjmp.h> directly; use <setjmp.h> instead." +#endif + +#ifndef _ASM +typedef struct + { + /* Callee-saved registers r6 - r14, r16 - r19 and r28 - r31. */ + int __regs[31]; + + /* Program counter. */ + void * __pc; + } __jmp_buf[1]; +#endif + +#endif /* bits/setjmp.h */ diff --git a/libc/sysdeps/linux/nds32/bits/shm.h b/libc/sysdeps/linux/nds32/bits/shm.h new file mode 100644 index 0000000..51e1ece --- /dev/null +++ b/libc/sysdeps/linux/nds32/bits/shm.h @@ -0,0 +1,106 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +/* Copyright (C) 1995,1996,1997,2000,2002,2004 Free Software Foundation, Inc. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#ifndef _SYS_SHM_H +# error "Never include <bits/shm.h> directly; use <sys/shm.h> instead." +#endif + +#include <bits/types.h> + +/* Permission flag for shmget. */ +#define SHM_R 0400 /* or S_IRUGO from <linux/stat.h> */ +#define SHM_W 0200 /* or S_IWUGO from <linux/stat.h> */ + +/* Flags for `shmat'. */ +#define SHM_RDONLY 010000 /* attach read-only else read-write */ +#define SHM_RND 020000 /* round attach address to SHMLBA */ +#define SHM_REMAP 040000 /* take-over region on attach */ + +/* Commands for `shmctl'. */ +#define SHM_LOCK 11 /* lock segment (root only) */ +#define SHM_UNLOCK 12 /* unlock segment (root only) */ + +__BEGIN_DECLS + +/* Segment low boundary address multiple. */ +#define SHMLBA 0x4000 +extern int __getpagesize (void) __THROW __attribute__ ((__const__)); + + +/* Type to count number of attaches. */ +typedef unsigned long int shmatt_t; + +/* Data structure describing a set of semaphores. */ +struct shmid_ds + { + struct ipc_perm shm_perm; /* operation permission struct */ + size_t shm_segsz; /* size of segment in bytes */ + __time_t shm_atime; /* time of last shmat() */ + unsigned long int __unused1; + __time_t shm_dtime; /* time of last shmdt() */ + unsigned long int __unused2; + __time_t shm_ctime; /* time of last change by shmctl() */ + unsigned long int __unused3; + __pid_t shm_cpid; /* pid of creator */ + __pid_t shm_lpid; /* pid of last shmop */ + shmatt_t shm_nattch; /* number of current attaches */ + unsigned long int __unused4; + unsigned long int __unused5; + }; + +#ifdef __USE_MISC + +/* ipcs ctl commands */ +# define SHM_STAT 13 +# define SHM_INFO 14 + +/* shm_mode upper byte flags */ +# define SHM_DEST 01000 /* segment will be destroyed on last detach */ +# define SHM_LOCKED 02000 /* segment will not be swapped */ +# define SHM_HUGETLB 04000 /* segment is mapped via hugetlb */ + +struct shminfo + { + unsigned long int shmmax; + unsigned long int shmmin; + unsigned long int shmmni; + unsigned long int shmseg; + unsigned long int shmall; + unsigned long int __unused1; + unsigned long int __unused2; + unsigned long int __unused3; + unsigned long int __unused4; + }; + +struct shm_info + { + int used_ids; + unsigned long int shm_tot; /* total allocated shm */ + unsigned long int shm_rss; /* total resident shm */ + unsigned long int shm_swp; /* total swapped shm */ + unsigned long int swap_attempts; + unsigned long int swap_successes; + }; + +#endif /* __USE_MISC */ + +__END_DECLS diff --git a/libc/sysdeps/linux/nds32/bits/sigcontext.h b/libc/sysdeps/linux/nds32/bits/sigcontext.h new file mode 100644 index 0000000..759b85d --- /dev/null +++ b/libc/sysdeps/linux/nds32/bits/sigcontext.h @@ -0,0 +1,59 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +#ifndef _BITS_SIGCONTEXT_H +#define _BITS_SIGCONTEXT_H 1 + +#ifndef sigcontext_struct +#define sigcontext_struct sigcontext + +struct sigcontext{ + unsigned long trap_no; + unsigned long error_code; + unsigned long oldmask; + unsigned long nds32_r0; + unsigned long nds32_r1; + unsigned long nds32_r2; + unsigned long nds32_r3; + unsigned long nds32_r4; + unsigned long nds32_r5; + unsigned long nds32_r6; + unsigned long nds32_r7; + unsigned long nds32_r8; + unsigned long nds32_r9; + unsigned long nds32_r10; + unsigned long nds32_r11; + unsigned long nds32_r12; + unsigned long nds32_r13; + unsigned long nds32_r14; + unsigned long nds32_r15; + unsigned long nds32_r16; + unsigned long nds32_r17; + unsigned long nds32_r18; + unsigned long nds32_r19; + unsigned long nds32_r20; + unsigned long nds32_r21; + unsigned long nds32_r22; + unsigned long nds32_r23; + unsigned long nds32_r24; + unsigned long nds32_r25; + unsigned long nds32_fp; //r28 + unsigned long nds32_gp; //r29 + unsigned long nds32_lr; //r30 + unsigned long nds32_sp; //r31 + unsigned long nds32_d1lo; + unsigned long nds32_d1hi; + unsigned long nds32_d0lo; + unsigned long nds32_d0hi; + unsigned long nds32_ipsw; + unsigned long nds32_ipc; + unsigned long fault_address; +}; + +#define sc_pc nds32_ipc /* For sysdeps/generic/profil-counter.h. */ + +#endif /* sigcontext_struct */ + +#endif /* _BITS_SIGCONTEXT_H */ diff --git a/libc/sysdeps/linux/nds32/bits/stackinfo.h b/libc/sysdeps/linux/nds32/bits/stackinfo.h new file mode 100644 index 0000000..b6f851a --- /dev/null +++ b/libc/sysdeps/linux/nds32/bits/stackinfo.h @@ -0,0 +1,31 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +/* Copyright (C) 2001 Free Software Foundation, Inc. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +/* This file contains a bit of information about the stack allocation + of the processor. */ + +#ifndef _STACKINFO_H +#define _STACKINFO_H 1 + +#define _STACK_GROWS_DOWN 1 + +#endif /* _STACKINFO_H */ diff --git a/libc/sysdeps/linux/nds32/bits/stat.h b/libc/sysdeps/linux/nds32/bits/stat.h new file mode 100644 index 0000000..fe25292 --- /dev/null +++ b/libc/sysdeps/linux/nds32/bits/stat.h @@ -0,0 +1,172 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +/* Copyright (C) 1992, 1995-2001, 2002 Free Software Foundation, Inc. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#ifndef _SYS_STAT_H +# error "Never include <bits/stat.h> directly; use <sys/stat.h> instead." +#endif + +/* Versions of the `struct stat' data structure. */ +#define _STAT_VER_LINUX_OLD 1 +#define _STAT_VER_KERNEL 1 +#define _STAT_VER_SVR4 2 +#define _STAT_VER_LINUX 3 +#define _STAT_VER _STAT_VER_LINUX /* The one defined below. */ + +/* Versions of the `xmknod' interface. */ +#define _MKNOD_VER_LINUX 1 +#define _MKNOD_VER_SVR4 2 +#define _MKNOD_VER _MKNOD_VER_LINUX /* The bits defined below. */ + + +struct stat + { + __dev_t st_dev; /* Device. */ + unsigned short int __pad1; +#ifndef __USE_FILE_OFFSET64 + __ino_t st_ino; /* File serial number. */ +#else + __ino_t __st_ino; /* 32bit file serial number. */ +#endif + __mode_t st_mode; /* File mode. */ + __nlink_t st_nlink; /* Link count. */ + __uid_t st_uid; /* User ID of the file's owner. */ + __gid_t st_gid; /* Group ID of the file's group.*/ + __dev_t st_rdev; /* Device number, if device. */ + unsigned short int __pad2; +#ifndef __USE_FILE_OFFSET64 + __off_t st_size; /* Size of file, in bytes. */ +#else + __off64_t st_size; /* Size of file, in bytes. */ +#endif + __blksize_t st_blksize; /* Optimal block size for I/O. */ + +#ifndef __USE_FILE_OFFSET64 + __blkcnt_t st_blocks; /* Number 512-byte blocks allocated. */ +#else + __blkcnt64_t st_blocks; /* Number 512-byte blocks allocated. */ +#endif +#ifdef __USE_MISC + /* Nanosecond resolution timestamps are stored in a format + equivalent to 'struct timespec'. This is the type used + whenever possible but the Unix namespace rules do not allow the + identifier 'timespec' to appear in the <sys/stat.h> header. + Therefore we have to handle the use of this header in strictly + standard-compliant sources special. */ + struct timespec st_atim; /* Time of last access. */ + struct timespec st_mtim; /* Time of last modification. */ + struct timespec st_ctim; /* Time of last status change. */ +# define st_atime st_atim.tv_sec /* Backward compatibility. */ +# define st_mtime st_mtim.tv_sec +# define st_ctime st_ctim.tv_sec +#else + __time_t st_atime; /* Time of last access. */ + unsigned long int st_atimensec; /* Nscecs of last access. */ + __time_t st_mtime; /* Time of last modification. */ + unsigned long int st_mtimensec; /* Nsecs of last modification. */ + __time_t st_ctime; /* Time of last status change. */ + unsigned long int st_ctimensec; /* Nsecs of last status change. */ +#endif +#ifndef __USE_FILE_OFFSET64 + unsigned long int __unused4; + unsigned long int __unused5; +#else + __ino64_t st_ino; /* File serial number. */ +#endif + }; + +#ifdef __USE_LARGEFILE64 +struct stat64 + { + __dev_t st_dev; /* Device. */ + unsigned int __pad1; + + __ino_t __st_ino; /* 32bit file serial number. */ + __mode_t st_mode; /* File mode. */ + __nlink_t st_nlink; /* Link count. */ + __uid_t st_uid; /* User ID of the file's owner. */ + __gid_t st_gid; /* Group ID of the file's group.*/ + __dev_t st_rdev; /* Device number, if device. */ + unsigned int __pad2; + __off64_t st_size; /* Size of file, in bytes. */ + __blksize_t st_blksize; /* Optimal block size for I/O. */ + + __blkcnt64_t st_blocks; /* Number 512-byte blocks allocated. */ +#ifdef __USE_MISC + /* Nanosecond resolution timestamps are stored in a format + equivalent to 'struct timespec'. This is the type used + whenever possible but the Unix namespace rules do not allow the + identifier 'timespec' to appear in the <sys/stat.h> header. + Therefore we have to handle the use of this header in strictly + standard-compliant sources special. */ + struct timespec st_atim; /* Time of last access. */ + struct timespec st_mtim; /* Time of last modification. */ + struct timespec st_ctim; /* Time of last status change. */ +#else + __time_t st_atime; /* Time of last access. */ + unsigned long int st_atimensec; /* Nscecs of last access. */ + __time_t st_mtime; /* Time of last modification. */ + unsigned long int st_mtimensec; /* Nsecs of last modification. */ + __time_t st_ctime; /* Time of last status change. */ + unsigned long int st_ctimensec; /* Nsecs of last status change. */ +#endif + __ino64_t st_ino; /* File serial number. */ + }; +#endif + +/* Tell code we have these members. */ +#define _STATBUF_ST_BLKSIZE +#define _STATBUF_ST_RDEV +/* Nanosecond resolution time values are supported. */ +#define _STATBUF_ST_NSEC + +/* Encoding of the file mode. */ + +#define __S_IFMT 0170000 /* These bits determine file type. */ + +/* File types. */ +#define __S_IFDIR 0040000 /* Directory. */ +#define __S_IFCHR 0020000 /* Character device. */ +#define __S_IFBLK 0060000 /* Block device. */ +#define __S_IFREG 0100000 /* Regular file. */ +#define __S_IFIFO 0010000 /* FIFO. */ +#define __S_IFLNK 0120000 /* Symbolic link. */ +#define __S_IFSOCK 0140000 /* Socket. */ + +/* POSIX.1b objects. Note that these macros always evaluate to zero. But + they do it by enforcing the correct use of the macros. */ +#define __S_TYPEISMQ(buf) ((buf)->st_mode - (buf)->st_mode) +#define __S_TYPEISSEM(buf) ((buf)->st_mode - (buf)->st_mode) +#define __S_TYPEISSHM(buf) ((buf)->st_mode - (buf)->st_mode) + +/* Protection bits. */ + +#define __S_ISUID 04000 /* Set user ID on execution. */ +#define __S_ISGID 02000 /* Set group ID on execution. */ +#define __S_ISVTX 01000 /* Save swapped text after use (sticky). */ +#define __S_IREAD 0400 /* Read by owner. */ +#define __S_IWRITE 0200 /* Write by owner. */ +#define __S_IEXEC 0100 /* Execute by owner. */ + +#ifdef __USE_ATFILE +# define UTIME_NOW ((1l << 30) - 1l) +# define UTIME_OMIT ((1l << 30) - 2l) +#endif diff --git a/libc/sysdeps/linux/nds32/bits/syscalls.h b/libc/sysdeps/linux/nds32/bits/syscalls.h new file mode 100644 index 0000000..f69ad4c --- /dev/null +++ b/libc/sysdeps/linux/nds32/bits/syscalls.h @@ -0,0 +1,103 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +#ifndef _BITS_SYSCALLS_H +#define _BITS_SYSCALLS_H +#ifndef _SYSCALL_H +# error "Never use <bits/syscalls.h> directly; include <sys/syscall.h> instead." +#endif + +#ifndef __ASSEMBLER__ +#include <errno.h> + +#undef INTERNAL_SYSCALL_ERROR_P +#define INTERNAL_SYSCALL_ERROR_P(val, err) ((unsigned int) (val) >= 0xfffff001u) + +#undef INTERNAL_SYSCALL_ERRNO +#define INTERNAL_SYSCALL_ERRNO(val, err) (-(val)) + +#define X(x) #x +#define Y(x) X(x) + +#define __issue_syscall(syscall_name) \ +" syscall " Y(syscall_name) "; \n" + +#define INTERNAL_SYSCALL_NCS(name, err, nr, args...) \ +(__extension__ \ +({ \ + register long __result __asm__("$r0"); \ + register long _sys_num __asm__("$r8"); \ + \ + LOAD_ARGS_##nr (name, args) \ + _sys_num = (name); \ + \ + __asm__ volatile ( \ + __issue_syscall (name) \ + : "=r" (__result) \ + : "r"(_sys_num) ASM_ARGS_##nr \ + : "$lp", "memory"); \ + __result; \ +}) \ +) + +/* Macros for setting up inline __asm__ input regs */ +#define ASM_ARGS_0 +#define ASM_ARGS_1 ASM_ARGS_0, "r" (__result) +#define ASM_ARGS_2 ASM_ARGS_1, "r" (_arg2) +#define ASM_ARGS_3 ASM_ARGS_2, "r" (_arg3) +#define ASM_ARGS_4 ASM_ARGS_3, "r" (_arg4) +#define ASM_ARGS_5 ASM_ARGS_4, "r" (_arg5) +#define ASM_ARGS_6 ASM_ARGS_5, "r" (_arg6) +#define ASM_ARGS_7 ASM_ARGS_6, "r" (_arg7) + +/* Macros for converting sys-call wrapper args into sys call args */ +#define LOAD_ARGS_0(name, arg) \ + _sys_num = (long) (name); \ + +#define LOAD_ARGS_1(name, arg1) \ + __result = (long) (arg1); \ + LOAD_ARGS_0 (name, arg1) + +/* + * Note that the use of _tmpX might look superflous, however it is needed + * to ensure that register variables are not clobbered if arg happens to be + * a function call itself. e.g. sched_setaffinity() calling getpid() for arg2 + * + * Also this specific order of recursive calling is important to segregate + * the tmp args evaluation (function call case described above) and assigment + * of register variables + */ +#define LOAD_ARGS_2(name, arg1, arg2) \ + long _tmp2 = (long) (arg2); \ + LOAD_ARGS_1 (name, arg1) \ + register long _arg2 __asm__ ("$r1") = _tmp2; + +#define LOAD_ARGS_3(name, arg1, arg2, arg3) \ + long _tmp3 = (long) (arg3); \ + LOAD_ARGS_2 (name, arg1, arg2) \ + register long _arg3 __asm__ ("$r2") = _tmp3; + +#define LOAD_ARGS_4(name, arg1, arg2, arg3, arg4) \ + long _tmp4 = (long) (arg4); \ + LOAD_ARGS_3 (name, arg1, arg2, arg3) \ + register long _arg4 __asm__ ("$r3") = _tmp4; + +#define LOAD_ARGS_5(name, arg1, arg2, arg3, arg4, arg5) \ + long _tmp5 = (long) (arg5); \ + LOAD_ARGS_4 (name, arg1, arg2, arg3, arg4) \ + register long _arg5 __asm__ ("$r4") = _tmp5; + +#define LOAD_ARGS_6(name, arg1, arg2, arg3, arg4, arg5, arg6) \ + long _tmp6 = (long) (arg6); \ + LOAD_ARGS_5 (name, arg1, arg2, arg3, arg4, arg5) \ + register long _arg6 __asm__ ("$r5") = _tmp6; + +#define LOAD_ARGS_7(name, arg1, arg2, arg3, arg4, arg5, arg6, arg7)\ + long _tmp7 = (long) (arg7); \ + LOAD_ARGS_6 (name, arg1, arg2, arg3, arg4, arg5, arg6) \ + register long _arg7 __asm__ ("$r6") = _tmp7; + +#endif /* ! __ASSEMBLER__ */ +#endif /* _BITS_SYSCALLS_H */ diff --git a/libc/sysdeps/linux/nds32/bits/uClibc_arch_features.h b/libc/sysdeps/linux/nds32/bits/uClibc_arch_features.h new file mode 100644 index 0000000..12e4af9 --- /dev/null +++ b/libc/sysdeps/linux/nds32/bits/uClibc_arch_features.h @@ -0,0 +1,37 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +/* + * Track misc arch-specific features that aren't config options + */ + +#ifndef _BITS_UCLIBC_ARCH_FEATURES_H +#define _BITS_UCLIBC_ARCH_FEATURES_H + +/* instruction used when calling abort() to kill yourself */ +#undef __UCLIBC_ABORT_INSTRUCTION__ + +/* does your target align 64bit values in register pairs ? (32bit arches only) */ +#define __UCLIBC_SYSCALL_ALIGN_64BIT__ + +/* does your target have a broken create_module() ? */ +#undef __UCLIBC_BROKEN_CREATE_MODULE__ + +/* does your target have to worry about older [gs]etrlimit() ? */ +#undef __UCLIBC_HANDLE_OLDER_RLIMIT__ + +/* does your target have an asm .set ? */ +#define __UCLIBC_HAVE_ASM_SET_DIRECTIVE__ + +/* define if target supports .weak */ +#define __UCLIBC_HAVE_ASM_WEAK_DIRECTIVE__ + +/* define if target supports .weakext */ +#undef __UCLIBC_HAVE_ASM_WEAKEXT_DIRECTIVE__ + +/* define if target supports IEEE signed zero floats */ +#define __UCLIBC_HAVE_SIGNED_ZERO__ + +#endif /* _BITS_UCLIBC_ARCH_FEATURES_H */ diff --git a/libc/sysdeps/linux/nds32/bits/uClibc_page.h b/libc/sysdeps/linux/nds32/bits/uClibc_page.h new file mode 100644 index 0000000..0438493 --- /dev/null +++ b/libc/sysdeps/linux/nds32/bits/uClibc_page.h @@ -0,0 +1,31 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +#ifndef _UCLIBC_PAGE_H +#define _UCLIBC_PAGE_H + +/* + * Linux/NDS32 supports 4k and 8k pages (build time). + * + * Although uClibc determines page size dynamically from kernel's auxv + * still the generic code needs a fall back + * _dl_pagesize = auxvt[AT_PAGESZ].a_un.a_val ? : PAGE_SIZE + */ + +#include <features.h> + +#if defined(__CONFIG_NDS32_PAGE_SIZE_8K__) +#define PAGE_SHIFT 13 +#else +#define PAGE_SHIFT 12 +#endif + +#define PAGE_SIZE (1UL << PAGE_SHIFT) +#define PAGE_MASK (~(PAGE_SIZE-1)) + +/* TBD: fix this with runtime value for a PAGE_SIZE agnostic uClibc */ +#define MMAP2_PAGE_SHIFT PAGE_SHIFT + +#endif /* _UCLIBC_PAGE_H */ diff --git a/libc/sysdeps/linux/nds32/bits/wordsize.h b/libc/sysdeps/linux/nds32/bits/wordsize.h new file mode 100644 index 0000000..32301a0 --- /dev/null +++ b/libc/sysdeps/linux/nds32/bits/wordsize.h @@ -0,0 +1,23 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +/* Copyright (C) 1999 Free Software Foundation, Inc. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#define __WORDSIZE 32 diff --git a/libc/sysdeps/linux/nds32/brk.c b/libc/sysdeps/linux/nds32/brk.c new file mode 100644 index 0000000..a3c38d9 --- /dev/null +++ b/libc/sysdeps/linux/nds32/brk.c @@ -0,0 +1,67 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +/* brk system call for Linux/NDS32. + Copyright (C) 1995, 1996 Free Software Foundation, Inc. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <errno.h> +#include <unistd.h> +#include <sys/syscall.h> + +/* This must be initialized data because commons can't have aliases. */ +void *__curbrk attribute_hidden = 0; + +libc_hidden_proto(brk) +int +brk (void *addr) +{ + void *newbrk; + +#ifdef NDS32_ABI_V0 + __asm__ __volatile__ ("move $r0, %1 \n\t" // save the argment in r0 + "pushm $r7, $r8 \n\t" + "sethi $r7, hi20(%2)\n\t" // put the syscall number in r7 + "ori $r7, $r7, lo12(%2)\n\t" + "syscall 0x7fff \n\t" // do the system call + "popm $r7, $r8 \n\t" + "move %0, $r5 \n\t" // keep the return value + : "=r"(newbrk) + : "r"(addr), "i"(SYS_ify(brk)) + : "$r0", "$r5"); +#else + __asm__ __volatile__ ("move $r0, %1 \n\t" // save the argment in r0 + "syscall %2 \n\t" // do the system call + "move %0, $r0 \n\t" // keep the return value + : "=r"(newbrk) + : "r"(addr), "i"(SYS_ify(brk)) + : "$r0"); +#endif + + __curbrk = newbrk; + + if (newbrk < addr) + { + __set_errno (ENOMEM); + return -1; + } + + return 0; +} +libc_hidden_def(brk) diff --git a/libc/sysdeps/linux/nds32/bsd-_setjmp.S b/libc/sysdeps/linux/nds32/bsd-_setjmp.S new file mode 100644 index 0000000..a7ab1c7 --- /dev/null +++ b/libc/sysdeps/linux/nds32/bsd-_setjmp.S @@ -0,0 +1,35 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +/* This just does a tail-call to `__sigsetjmp (ARG, 0)'. + We cannot do it in C because it must be a tail-call, so frame-unwinding + in setjmp doesn't clobber the state restored by longjmp. */ + +#include <sysdep.h> + +ENTRY(_setjmp) + move $r1, #0 + +/* Make a tail call to __sigsetjmp. */ +#ifdef PIC + /* Initialize $r2 as $gp value. */ + sethi $r2, hi20(_GLOBAL_OFFSET_TABLE_-8) + ori $r2, $r2, lo12(_GLOBAL_OFFSET_TABLE_-4) + mfusr $r15, $pc + add $r2, $r15, $r2 + + ! la $r3, __sigsetjmp@PLT + sethi $r3, hi20(__sigsetjmp@PLT) + ori $r3, $r3, lo12(__sigsetjmp@PLT) + add $r3, $r3, $r2 + + jr $r3 +#else /* NOT PIC */ + la $r15, C_SYMBOL_NAME(__sigsetjmp) + jr $r15 +#endif + +END(_setjmp) +libc_hidden_def(_setjmp) diff --git a/libc/sysdeps/linux/nds32/bsd-setjmp.S b/libc/sysdeps/linux/nds32/bsd-setjmp.S new file mode 100644 index 0000000..b00e62d --- /dev/null +++ b/libc/sysdeps/linux/nds32/bsd-setjmp.S @@ -0,0 +1,34 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +/* This just does a tail-call to `__sigsetjmp (ARG, 1)'. + We cannot do it in C because it must be a tail-call, so frame-unwinding + in setjmp doesn't clobber the state restored by longjmp. */ + +#include <sysdep.h> + +ENTRY(setjmp) + move $r1, #1 + +/* Make a tail call to __sigsetjmp. */ +#ifdef PIC + /* Initialize $r2 as $gp value. */ + sethi $r2, hi20(_GLOBAL_OFFSET_TABLE_-8) + ori $r2, $r2, lo12(_GLOBAL_OFFSET_TABLE_-4) + mfusr $r15, $pc + add $r2, $r15, $r2 + + ! la $r3, __sigsetjmp@PLT + sethi $r3, hi20(__sigsetjmp@PLT) + ori $r3, $r3, lo12(__sigsetjmp@PLT) + add $r3, $r3, $r2 + + jr $r3 +#else /* NOT PIC */ + la $r15, C_SYMBOL_NAME(__sigsetjmp) + jr $r15 +#endif + +END (setjmp) diff --git a/libc/sysdeps/linux/nds32/clone.S b/libc/sysdeps/linux/nds32/clone.S new file mode 100644 index 0000000..5dba178 --- /dev/null +++ b/libc/sysdeps/linux/nds32/clone.S @@ -0,0 +1,93 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +/* clone() is even more special than fork() as it mucks with stacks + and invokes a function in the right context after its all over. */ + +#include <sysdep.h> +#include <sys/syscall.h> +#define _ERRNO_H 1 +#include <bits/errno.h> + +/* + int clone(int (*fn)(void *), void *child_stack, int flags, void *arg); + _syscall2(int, clone, int, flags, void *, child_stack) +*/ + +ENTRY(__clone) +#ifdef PIC + /* set GP register to parent only, cause child's $SP will be $r1. */ + pushm $fp, $gp +#ifndef __NDS32_N1213_43U1H__ + mfusr $r15, $PC +#endif + sethi $gp, hi20(_GLOBAL_OFFSET_TABLE_+4) + ori $gp, $gp, lo12(_GLOBAL_OFFSET_TABLE_+8) + add $gp, $gp, $r15 +#endif + /* sanity check arguments. */ + beqz $r0, 1f + bnez $r1, 2f + +1: + movi $r0, -EINVAL +5: +#ifdef PIC + /* restore GP register, only in parent's stack */ + popm $fp, $gp + la $r15, C_SYMBOL_NAME(__syscall_error@PLT) + jr $r15 +#else + b C_SYMBOL_NAME(__syscall_error) +#endif + +2: + /* Child's $SP will be $r1, push to child's stack only. */ + addi $r1, $r1, -4 + swi.p $r3, [$r1], -4 ! arg + swi $r0, [$r1] ! fn + + /* do the system call */ + or $r0, $r2, $r2 ! move r0, r2 + __do_syscall(clone) + !syscall (__NR_clone) + beqz $r0, 4f + bltz $r0, 5b + + ! parent +#ifdef PIC + /* restore GP register, only in parent's stack */ + popm $fp, $gp +#endif + ret + +4: + /* Only in child's stack. */ + pop $r1 ! fn + pop $r0 ! arg +#if defined(NDS32_ABI_2) || defined(NDS32_ABI_2FP) +#else + addi $sp, $sp, -24 +#endif + ! use r15 in case _exit is PIC +#ifdef __NDS32_N1213_43U1H__ + or $r15, $r1, $r1 ! move r15, r2 +#endif + bral $r1 +#if defined(NDS32_ABI_2) || defined(NDS32_ABI_2FP) +#else + addi $sp, $sp, 24 +#endif + ! use r15 in case _exit is PIC +#ifdef PIC + la $r15, C_SYMBOL_NAME(_exit@PLT) + jr $r15 +#else + b C_SYMBOL_NAME(_exit) +#endif + + +PSEUDO_END (__clone) +weak_alias (__clone, clone) diff --git a/libc/sysdeps/linux/nds32/crt1.S b/libc/sysdeps/linux/nds32/crt1.S new file mode 100644 index 0000000..5454401 --- /dev/null +++ b/libc/sysdeps/linux/nds32/crt1.S @@ -0,0 +1,96 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +/* Startup code compliant to the ELF NDS32 ABI */ + +#include <sys/regdef.h> +#include <features.h> +#define BP_SYM(name) name + +/* We need to call: + __uClibc_main (int (*main) (int, char **, char **), int argc, + char **argv, void (*init) (void), void (*fini) (void), + void (*rtld_fini) (void), void *stack_end) +*/ + +.text + .globl _start + .type _start,@function + .type _init,@function + .type _fini,@function +#ifndef __UCLIBC_CTOR_DTOR__ + .weak _init + .weak _fini +#endif + .type main,@function + .type __uClibc_main,@function +#ifdef SHARED +.pic +1: + ret +#endif + +_start: + movi $fp, 0 ! clear FP + lwi $r1, [$sp + 0] ! r1 = argc + addi $r2, $sp, 4 ! r2 = argv + + /* align sp to 8-byte boundary */ + movi $r0, -8 + and $sp, $sp, $r0 + + addi $r6, $sp, 0 ! r6 = stack top + +#ifdef SHARED + /* set gp register */ +#ifdef __NDS32_N1213_43U1H__ + jal 1b + sethi $gp, HI20(_GLOBAL_OFFSET_TABLE_) + ori $gp, $gp, LO12(_GLOBAL_OFFSET_TABLE_ + 4) + add $gp, $lp, $gp +#else + mfusr $r15, $PC + sethi $gp, HI20(_GLOBAL_OFFSET_TABLE_+4) + ori $gp, $gp, LO12(_GLOBAL_OFFSET_TABLE_ + 8) + add $gp, $r15, $gp +#endif + + la $r3, _init@GOTOFF + la $r4, _fini@GOTOFF + la $r0, main@GOT + + /* push everything to stack, r5 is rtld_fini and r7 is garbage */ + pushm $r0, $r7 + + /* now start it up */ + bal __uClibc_main@PLT + + /* should never get here */ + bal abort@PLT +#else + la $gp, _SDA_BASE_ ! init GP for small data access + + la $r3, _init + la $r4, _fini + la $r0, main + + /* push everything to stack, r5 is rtld_fini and r7 is garbage */ + pushm $r0, $r7 + + /* now start it up */ + bal __uClibc_main + + /* should never get here */ + bal abort +#endif + ret + +/* Define a symbol for the first piece of initialized data. */ + .data + .globl __data_start +__data_start: + .long 0 + .weak data_start + data_start = __data_start diff --git a/libc/sysdeps/linux/nds32/crti.S b/libc/sysdeps/linux/nds32/crti.S new file mode 100644 index 0000000..92e5e71 --- /dev/null +++ b/libc/sysdeps/linux/nds32/crti.S @@ -0,0 +1,81 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + + .pic +#APP + .section .init + .align 2 + .globl _init + .type _init, @function +_init: +.LFB28: + ! Generate instructions for ABI: 1 + ! pretend args size: 0, auto vars size: 0, pushed regs size: 12, outgoing args size: 24 + ! Generate instructions for ABI: 2 + ! pretend args size: 0, auto vars size: 0, pushed regs size: 12, outgoing args size: 0 + ! frame pointer: $fp, needed: yes + ! $fp $gp $lp + ! prologue + .off_16bit + smw.adm $sp,[$sp],$sp,#0x8 + smw.adm $sp,[$sp],$sp,#0x6 + .restore_16bit +#ifdef __NDS32_N1213_43U1H__ + sethi $gp, hi20(_GLOBAL_OFFSET_TABLE_+8) + ori $gp, $gp, lo12(_GLOBAL_OFFSET_TABLE_+12) +#else + sethi $gp, hi20(_GLOBAL_OFFSET_TABLE_-8) + ori $gp, $gp, lo12(_GLOBAL_OFFSET_TABLE_-4) + mfusr $ta, $pc +#endif + add $gp, $ta, $gp +#if defined(NDS32_ABI_2) || defined(NDS32_ABI_2FP) + addi $sp, $sp, -4 + addi $fp, $sp, 8 +#else + addi $sp, $sp, -28 + addi $fp, $sp, 32 +#endif + ! end of prologue +#APP + .align 2 + + .section .fini + .align 2 + .globl _fini + .type _fini, @function +_fini: +.LFB29: + ! Generate instructions for ABI: 1 + ! pretend args size: 0, auto vars size: 0, pushed regs size: 12, outgoing args size: 24 + ! Generate instructions for ABI: 2 + ! pretend args size: 0, auto vars size: 0, pushed regs size: 12, outgoing args size: 0 + ! frame pointer: $fp, needed: yes + ! $fp $gp $lp + ! prologue + .off_16bit + smw.adm $sp,[$sp],$sp,#0x8 + smw.adm $sp,[$sp],$sp,#0x6 + .restore_16bit +#ifdef __NDS32_N1213_43U1H__ + sethi $gp, hi20(_GLOBAL_OFFSET_TABLE_+8) + ori $gp, $gp, lo12(_GLOBAL_OFFSET_TABLE_+12) +#else + sethi $gp, hi20(_GLOBAL_OFFSET_TABLE_-8) + ori $gp, $gp, lo12(_GLOBAL_OFFSET_TABLE_-4) + mfusr $ta, $pc +#endif + add $gp, $ta, $gp +#if defined(NDS32_ABI_2) || defined(NDS32_ABI_2FP) + addi $sp, $sp, -4 + addi $fp, $sp, 8 +#else + addi $sp, $sp, -28 + addi $fp, $sp, 32 +#endif + ! end of prologue +#APP + .align 2 + .ident "GCC: (GNU) 3.4.4" diff --git a/libc/sysdeps/linux/nds32/crtn.S b/libc/sysdeps/linux/nds32/crtn.S new file mode 100644 index 0000000..7cc543e --- /dev/null +++ b/libc/sysdeps/linux/nds32/crtn.S @@ -0,0 +1,24 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + + .pic +#APP + .section .init + ! epilogue + addi $sp,$fp,#-4 + lmw.bim $sp,[$sp],$sp,#0x6 + lwi.bi $fp,[$sp],#4 + ret +.LFE28: + .section .fini +#NO_APP + ! epilogue + addi $sp,$fp,#-4 + lmw.bim $sp,[$sp],$sp,#0x6 + lwi.bi $fp,[$sp],#4 + ret +.LFE29: +#APP + .ident "GCC: (GNU) 3.4.4" diff --git a/libc/sysdeps/linux/nds32/jmpbuf-offsets.h b/libc/sysdeps/linux/nds32/jmpbuf-offsets.h new file mode 100644 index 0000000..e88278f --- /dev/null +++ b/libc/sysdeps/linux/nds32/jmpbuf-offsets.h @@ -0,0 +1,28 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +/* Private macros for accessing __jmp_buf contents. NDS32 version. + Copyright (C) 2006 Free Software Foundation, Inc. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +/* +r6 r7 r8 r9 r10 r11 r12 r13 r14 r16 r17 r18 r19 r28 r29 r30 r31 + 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 +*/ + +#define __JMP_BUF_SP 12 diff --git a/libc/sysdeps/linux/nds32/jmpbuf-unwind.h b/libc/sysdeps/linux/nds32/jmpbuf-unwind.h new file mode 100644 index 0000000..14a3029 --- /dev/null +++ b/libc/sysdeps/linux/nds32/jmpbuf-unwind.h @@ -0,0 +1,12 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +#include <setjmp.h> +#include <jmpbuf-offsets.h> + +/* Test if longjmp to JMPBUF would unwind the frame + containing a local variable at ADDRESS. */ +#define _JMPBUF_UNWINDS(jmpbuf, address) \ + ((void *) (address) < (void *) &(jmpbuf)[0].__regs[__JMP_BUF_SP]) diff --git a/libc/sysdeps/linux/nds32/mmap.S b/libc/sysdeps/linux/nds32/mmap.S new file mode 100644 index 0000000..351d1c5 --- /dev/null +++ b/libc/sysdeps/linux/nds32/mmap.S @@ -0,0 +1,101 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +/* Copyright (C) 1998, 2000, 2003 Free Software Foundation, Inc. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <sys/syscall.h> +#include <sysdep.h> + .text + +.globl __mmap +ENTRY (__mmap) + +#ifdef PIC +.pic +#endif + + // reserve space for r0, r1 +#if defined(NDS32_ABI_2) || defined(NDS32_ABI_2FP) +#else + addi $sp, $sp, -8 +#endif + // change to units of the system page size + srli $r5, $r5, 0xc + + syscall SYS_ify(mmap2) +#if defined(NDS32_ABI_2) || defined(NDS32_ABI_2FP) +#else + addi $sp, $sp, 8 +#endif + + /* r0 is < -4096 if there was an error. */ + bgez $r0, 1f + sltsi $r1,$r0,-4096 + beqz $r1,2f + +1: + ret +2: +#ifdef PIC +#ifdef __NDS32_N1213_43U1H__ + ! save lp + addi $r2, $lp, 0 + + ! set r1 as gp + jal 1b + sethi $r1, hi20(_GLOBAL_OFFSET_TABLE_) + ori $r1, $r1, lo12(_GLOBAL_OFFSET_TABLE_+4) + add $r1, $lp, $r1 + + ! restore lp + addi $lp, $r2, 0 + + ! r15=SYSCALL_ERROR@PLT + sethi $r15, hi20(SYSCALL_ERROR@PLT) + ori $r15, $r15, lo12(SYSCALL_ERROR@PLT) + add $r15, $r15, $r1 + + ! jump to SYSCALL_ERROR + jr $r15 +#else + ! set r1 as gp + mfusr $r15, $PC + sethi $r1, hi20(_GLOBAL_OFFSET_TABLE_+4) + ori $r1, $r1, lo12(_GLOBAL_OFFSET_TABLE_+8) + add $r1, $r1, $r15 + + ! r15=SYSCALL_ERROR@PLT + sethi $r15, hi20(SYSCALL_ERROR@PLT) + ori $r15, $r15, lo12(SYSCALL_ERROR@PLT) + add $r15, $r15, $r1 + + ! jump to SYSCALL_ERROR + jr $r15 +#endif +#else + j SYSCALL_ERROR +#endif + +ret + +PSEUDO_END (__mmap) + +weak_alias (__mmap, mmap) +libc_hidden_def(mmap) diff --git a/libc/sysdeps/linux/nds32/setjmp.S b/libc/sysdeps/linux/nds32/setjmp.S new file mode 100644 index 0000000..8cb9adb --- /dev/null +++ b/libc/sysdeps/linux/nds32/setjmp.S @@ -0,0 +1,109 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +/* + setjmp/longjmp for nds32. + r0 - r5 are for paramter passing - no need to save + r6 - r14 are callee saved - needs to save + r15 is temp register for assembler - no need to save + r16 - r25 are caller saved - no need to save + r26 - r27 are temp registers for OS - no need to save + r28 is fp - need to save + r29 is gp - need to save + r30 is ra - need to save + r31 is sp - need to save + so we need to save r6 - r14 and r28 - r31 + The jmpbuf looks like this: + r6 + r7 + r8 + r9 + r10 + r11 + r12 + r13 + r14 + fp + gp + ra + sp +#ifdef NDS32_ABI_2FP_PLUS + ($fpcfg.freg) + (callee-saved FPU regs) +#endif + reserved(for 8-byte align if needed) +*/ + +#include <sysdep.h> +#define _SETJMP_H +#define _ASM +#include <bits/setjmp.h> + .section .text + +ENTRY(__sigsetjmp) + move $r2, $r0 +.off_16bit + ! save registers into buffer + smw.bim $r6, [$r2], $r14, #0xf +.restore_16bit + +#ifdef NDS32_ABI_2FP_PLUS +/* Process for FPU registers. */ + fmfcfg $r20 /* Keep $fpcfg in $r20. */ + slli $r20, $r20, #28 + srli $r20, $r20, #30 /* Set $r20 as $fpcfg.freg. */ + swi.bi $r20, [$r2], #4 + + /* Case switch for $r20 as $fpcfg.freg. */ + beqz $r20, .LCFG0 /* Branch if $fpcfg.freg = 0b00. */ + xori $r15, $r20, #0b10 + beqz $r15, .LCFG2 /* Branch if $fpcfg.freg = 0b10. */ + srli $r20, $r20, #0b01 + beqz $r20, .LCFG1 /* Branch if $fpcfg.freg = 0b01. */ + /* Fall-through if $fpcfg.freg = 0b11. */ +.LCFG3: + fsdi.bi $fd31, [$r2], #8 + fsdi.bi $fd30, [$r2], #8 + fsdi.bi $fd29, [$r2], #8 + fsdi.bi $fd28, [$r2], #8 + fsdi.bi $fd27, [$r2], #8 + fsdi.bi $fd26, [$r2], #8 + fsdi.bi $fd25, [$r2], #8 + fsdi.bi $fd24, [$r2], #8 +.LCFG2: + fsdi.bi $fd10, [$r2], #8 + fsdi.bi $fd9, [$r2], #8 + fsdi.bi $fd8, [$r2], #8 +.LCFG1: + fsdi.bi $fd7, [$r2], #8 + fsdi.bi $fd6, [$r2], #8 + fsdi.bi $fd5, [$r2], #8 + fsdi.bi $fd4, [$r2], #8 +.LCFG0: + fsdi.bi $fd3, [$r2], #8 +#endif /* NDS32_ABI_2FP_PLUS */ + + +/* Make a tail call to __sigjmp_save. */ +#ifdef PIC + /* Initialize $r2 as $gp value. */ + sethi $r2, hi20(_GLOBAL_OFFSET_TABLE_-8) + ori $r2, $r2, lo12(_GLOBAL_OFFSET_TABLE_-4) + mfusr $r15, $pc + add $r2, $r15, $r2 + + ! la $r3, __sigjmp_save@PLT + sethi $r3, hi20(__sigjmp_save@PLT) + ori $r3, $r3, lo12(__sigjmp_save@PLT) + add $r3, $r3, $r2 + + jr $r3 +#else /* NOT PIC */ + la $r15, C_SYMBOL_NAME(__sigjmp_save) + jr $r15 +#endif + +END(__sigsetjmp) +hidden_def(__sigsetjmp) diff --git a/libc/sysdeps/linux/nds32/sigaction.c b/libc/sysdeps/linux/nds32/sigaction.c new file mode 100644 index 0000000..1a24c49 --- /dev/null +++ b/libc/sysdeps/linux/nds32/sigaction.c @@ -0,0 +1,40 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +#include <errno.h> +#include <signal.h> +#include <sys/syscall.h> +#include <string.h> +#include <bits/kernel_sigaction.h> + +#define SA_RESTORER 0x04000000 + +extern void __default_sa_restorer(void); + +int __libc_sigaction(int sig, const struct sigaction *act, + struct sigaction *oact) +{ + struct sigaction kact; + + if (act && !(act->sa_flags & SA_RESTORER)) { + memcpy(&kact, act, sizeof(kact)); + kact.sa_restorer = __default_sa_restorer; + kact.sa_flags |= SA_RESTORER; + act = &kact; + } + /* NB: kernel (as of 2.6.25) will return EINVAL + * if sizeof(act->sa_mask) does not match kernel's sizeof(sigset_t) */ + return __syscall_rt_sigaction(sig, act, oact, sizeof(act->sa_mask)); +} + +#ifndef LIBC_SIGACTION +# ifndef __UCLIBC_HAS_THREADS__ +strong_alias(__libc_sigaction,sigaction) +libc_hidden_def(sigaction) +# else +weak_alias(__libc_sigaction,sigaction) +libc_hidden_weak(sigaction) +# endif +#endif diff --git a/libc/sysdeps/linux/nds32/sigrestorer.S b/libc/sysdeps/linux/nds32/sigrestorer.S new file mode 100644 index 0000000..bf61886 --- /dev/null +++ b/libc/sysdeps/linux/nds32/sigrestorer.S @@ -0,0 +1,42 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +/* Copyright (C) 1999 Free Software Foundation, Inc. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <sysdep.h> +#include <sys/syscall.h> + +/* If no SA_RESTORER function was specified by the application we use + one of these. This avoids the need for the kernel to synthesise a return + instruction on the stack, which would involve expensive cache flushes. */ + +ENTRY(__default_sa_restorer) + /* DO NOT SAVE r7 INTO STACK, THIS SYSCALL NEVER RETURN */ + syscall SYS_ify(sigreturn) +END(__default_sa_restorer) + +#ifdef __NR_rt_sigreturn + +ENTRY(__default_rt_sa_restorer) + /* DO NOT SAVE r7 INTO STACK, THIS SYSCALL NEVER RETURN */ + syscall SYS_ify(rt_sigreturn) +END(__default_rt_sa_restorer) + +#endif diff --git a/libc/sysdeps/linux/nds32/sys/elf.h b/libc/sysdeps/linux/nds32/sys/elf.h new file mode 100644 index 0000000..5199486 --- /dev/null +++ b/libc/sysdeps/linux/nds32/sys/elf.h @@ -0,0 +1,13 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +#ifndef _SYS_ELF_H +#define _SYS_ELF_H 1 + +#warning "This header is obsolete; use <sys/procfs.h> instead." + +#include <sys/procfs.h> + +#endif /* _SYS_ELF_H */ diff --git a/libc/sysdeps/linux/nds32/sys/io.h b/libc/sysdeps/linux/nds32/sys/io.h new file mode 100644 index 0000000..6863990 --- /dev/null +++ b/libc/sysdeps/linux/nds32/sys/io.h @@ -0,0 +1,48 @@ +/* Copyright (C) 1996, 1998, 1999 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#ifndef _SYS_IO_H + +#define _SYS_IO_H 1 +#include <features.h> + +__BEGIN_DECLS + +/* If TURN_ON is TRUE, request for permission to do direct i/o on the + port numbers in the range [FROM,FROM+NUM-1]. Otherwise, turn I/O + permission off for that range. This call requires root privileges. */ +extern int ioperm (unsigned long int __from, unsigned long int __num, + int __turn_on) __THROW; + +/* Set the I/O privilege level to LEVEL. If LEVEL is nonzero, + permission to access any I/O port is granted. This call requires + root privileges. */ +extern int iopl (int __level) __THROW; + +/* The functions that actually perform reads and writes. */ +extern unsigned char inb (unsigned long int port) __THROW; +extern unsigned short int inw (unsigned long int port) __THROW; +extern unsigned long int inl (unsigned long int port) __THROW; + +extern void outb (unsigned char value, unsigned long int port) __THROW; +extern void outw (unsigned short value, unsigned long int port) __THROW; +extern void outl (unsigned long value, unsigned long int port) __THROW; + +__END_DECLS + +#endif /* _SYS_IO_H */ diff --git a/libc/sysdeps/linux/nds32/sys/procfs.h b/libc/sysdeps/linux/nds32/sys/procfs.h new file mode 100644 index 0000000..f39a369 --- /dev/null +++ b/libc/sysdeps/linux/nds32/sys/procfs.h @@ -0,0 +1,127 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +/* Copyright (C) 1996, 1997, 1999, 2001 Free Software Foundation, Inc. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#ifndef _SYS_PROCFS_H +#define _SYS_PROCFS_H 1 + +/* This is somewhat modelled after the file of the same name on SVR4 + systems. It provides a definition of the core file format for ELF + used on Linux. It doesn't have anything to do with the /proc file + system, even though Linux has one. + + Anyway, the whole purpose of this file is for GDB and GDB only. + Don't read too much into it. Don't use it for anything other than + GDB unless you know what you are doing. */ + +#include <features.h> +#include <sys/time.h> +#include <sys/types.h> +#include <sys/user.h> + +__BEGIN_DECLS + +/* Type for a general-purpose register. */ +typedef unsigned long elf_greg_t; + +/* And the whole bunch of them. We could have used `struct + user_regs' directly in the typedef, but tradition says that + the register set is an array, which does have some peculiar + semantics, so leave it that way. */ +#define ELF_NGREG (sizeof (struct user_regs) / sizeof(elf_greg_t)) +typedef elf_greg_t elf_gregset_t[ELF_NGREG]; + +/* Register set for the floating-point registers. */ +typedef struct user_fpregs elf_fpregset_t; + +/* Signal info. */ +struct elf_siginfo + { + int si_signo; /* Signal number. */ + int si_code; /* Extra code. */ + int si_errno; /* Errno. */ + }; + +/* Definitions to generate Intel SVR4-like core files. These mostly + have the same names as the SVR4 types with "elf_" tacked on the + front to prevent clashes with Linux definitions, and the typedef + forms have been avoided. This is mostly like the SVR4 structure, + but more Linuxy, with things that Linux does not support and which + GDB doesn't really use excluded. */ + +struct elf_prstatus + { + struct elf_siginfo pr_info; /* Info associated with signal. */ + short int pr_cursig; /* Current signal. */ + unsigned long int pr_sigpend; /* Set of pending signals. */ + unsigned long int pr_sighold; /* Set of held signals. */ + __pid_t pr_pid; + __pid_t pr_ppid; + __pid_t pr_pgrp; + __pid_t pr_sid; + struct timeval pr_utime; /* User time. */ + struct timeval pr_stime; /* System time. */ + struct timeval pr_cutime; /* Cumulative user time. */ + struct timeval pr_cstime; /* Cumulative system time. */ + elf_gregset_t pr_reg; /* GP registers. */ + int pr_fpvalid; /* True if math copro being used. */ + }; + + +#define ELF_PRARGSZ (80) /* Number of chars for args. */ + +struct elf_prpsinfo + { + char pr_state; /* Numeric process state. */ + char pr_sname; /* Char for pr_state. */ + char pr_zomb; /* Zombie. */ + char pr_nice; /* Nice val. */ + unsigned long int pr_flag; /* Flags. */ + unsigned short int pr_uid; + unsigned short int pr_gid; + int pr_pid, pr_ppid, pr_pgrp, pr_sid; + /* Lots missing */ + char pr_fname[16]; /* Filename of executable. */ + char pr_psargs[ELF_PRARGSZ]; /* Initial part of arg list. */ + }; + +/* The rest of this file provides the types for emulation of the + Solaris <proc_service.h> interfaces that should be implemented by + users of libthread_db. */ + +/* Addresses. */ +typedef void *psaddr_t; + +/* Register sets. Linux has different names. */ +typedef elf_gregset_t prgregset_t; +typedef elf_fpregset_t prfpregset_t; + +/* We don't have any differences between processes and threads, + therefore have only one PID type. */ +typedef __pid_t lwpid_t; + +/* Process status and info. In the end we do provide typedefs for them. */ +typedef struct elf_prstatus prstatus_t; +typedef struct elf_prpsinfo prpsinfo_t; + +__END_DECLS + +#endif /* sys/procfs.h */ diff --git a/libc/sysdeps/linux/nds32/sys/ptrace.h b/libc/sysdeps/linux/nds32/sys/ptrace.h new file mode 100644 index 0000000..3ca259a --- /dev/null +++ b/libc/sysdeps/linux/nds32/sys/ptrace.h @@ -0,0 +1,133 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +/* `ptrace' debugger support interface. Linux version. + Copyright (C) 1996, 1997, 1998, 1999, 2000 Free Software Foundation, Inc. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#ifndef _SYS_PTRACE_H +#define _SYS_PTRACE_H 1 + +#include <features.h> + +__BEGIN_DECLS + +/* Type of the REQUEST argument to `ptrace.' */ +enum __ptrace_request +{ + /* Indicate that the process making this request should be traced. + All signals received by this process can be intercepted by its + parent, and its parent can use the other `ptrace' requests. */ + PTRACE_TRACEME = 0, +#define PT_TRACE_ME PTRACE_TRACEME + + /* Return the word in the process's text space at address ADDR. */ + PTRACE_PEEKTEXT = 1, +#define PT_READ_I PTRACE_PEEKTEXT + + /* Return the word in the process's data space at address ADDR. */ + PTRACE_PEEKDATA = 2, +#define PT_READ_D PTRACE_PEEKDATA + + /* Return the word in the process's user area at offset ADDR. */ + PTRACE_PEEKUSER = 3, +#define PT_READ_U PTRACE_PEEKUSER + + /* Write the word DATA into the process's text space at address ADDR. */ + PTRACE_POKETEXT = 4, +#define PT_WRITE_I PTRACE_POKETEXT + + /* Write the word DATA into the process's data space at address ADDR. */ + PTRACE_POKEDATA = 5, +#define PT_WRITE_D PTRACE_POKEDATA + + /* Write the word DATA into the process's user area at offset ADDR. */ + PTRACE_POKEUSER = 6, +#define PT_WRITE_U PTRACE_POKEUSER + + /* Continue the process. */ + PTRACE_CONT = 7, +#define PT_CONTINUE PTRACE_CONT + + /* Kill the process. */ + PTRACE_KILL = 8, +#define PT_KILL PTRACE_KILL + + /* Single step the process. + This is not supported on all machines. */ + PTRACE_SINGLESTEP = 9, +#define PT_STEP PTRACE_SINGLESTEP + + /* Get all general purpose registers used by a processes. + This is not supported on all machines. */ + PTRACE_GETREGS = 12, +#define PT_GETREGS PTRACE_GETREGS + + /* Set all general purpose registers used by a processes. + This is not supported on all machines. */ + PTRACE_SETREGS = 13, +#define PT_SETREGS PTRACE_SETREGS + + /* Get all floating point registers used by a processes. + This is not supported on all machines. */ + PTRACE_GETFPREGS = 14, +#define PT_GETFPREGS PTRACE_GETFPREGS + + /* Set all floating point registers used by a processes. + This is not supported on all machines. */ + PTRACE_SETFPREGS = 15, +#define PT_SETFPREGS PTRACE_SETFPREGS + + /* Attach to a process that is already running. */ + PTRACE_ATTACH = 16, +#define PT_ATTACH PTRACE_ATTACH + + /* Detach from a process attached to with PTRACE_ATTACH. */ + PTRACE_DETACH = 17, +#define PT_DETACH PTRACE_DETACH + + /* Get all extended floating point registers used by a processes. + This is not supported on all machines. */ + PTRACE_GETFPXREGS = 18, +#define PT_GETFPXREGS PTRACE_GETFPXREGS + + /* Set all extended floating point registers used by a processes. + This is not supported on all machines. */ + PTRACE_SETFPXREGS = 19, +#define PT_SETFPXREGS PTRACE_SETFPXREGS + + /* Continue and stop at the next (return from) syscall. */ + PTRACE_SYSCALL = 24 +#define PT_SYSCALL PTRACE_SYSCALL +}; + +/* Perform process tracing functions. REQUEST is one of the values + above, and determines the action to be taken. + For all requests except PTRACE_TRACEME, PID specifies the process to be + traced. + + PID and the other arguments described above for the various requests should + appear (those that are used for the particular request) as: + pid_t PID, void *ADDR, int DATA, void *ADDR2 + after REQUEST. */ +extern long int ptrace (enum __ptrace_request __request, ...) __THROW; + +__END_DECLS + +#endif /* _SYS_PTRACE_H */ diff --git a/libc/sysdeps/linux/nds32/sys/regdef.h b/libc/sysdeps/linux/nds32/sys/regdef.h new file mode 100644 index 0000000..e37dcdd --- /dev/null +++ b/libc/sysdeps/linux/nds32/sys/regdef.h @@ -0,0 +1,90 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +/* Copyright (C) 1997, 1998, 2002, 2003, 2004 Free Software Foundation, Inc. + Contributed by Ralf Baechle &lt;ralf(a)gnu.org&gt;rg>. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#ifndef _SYS_REGDEF_H +#define _SYS_REGDEF_H + +/* + * Symbolic register names for 32 bit ABI + */ +#define o0 r0 /* arguments r0 ~ r5 */ +#define o1 r1 +#define o2 r2 +#define o3 r3 +#define o4 r4 +#define o5 r5 +#define o6 r6 +#define o7 r7 + +#define h0 r0 /* arguments r0 ~ r5 */ +#define h1 r1 +#define h2 r2 +#define h3 r3 +#define h4 r4 +#define h5 r5 +#define h6 r6 +#define h7 r7 +#define h8 r8 +#define h9 r9 +#define h10 r10 +#define h11 r11 +#define h12 r16 +#define h13 r17 +#define h14 r18 +#define h15 r19 + +#define a0 r0 /* arguments r0 ~ r5 */ +#define a1 r1 +#define a2 r2 +#define a3 r3 +#define a4 r4 +#define a5 r5 +#define s0 r6 +#define s1 r7 +#define s2 r8 +#define s3 r9 +#define s4 r10 +#define s5 r11 +#define s6 r12 +#define s7 r13 +#define s8 r14 +#define ta r15 +#define t0 r16 +#define t1 r17 +#define t2 r18 +#define t3 r19 +#define t4 r20 +#define t5 r21 +#define t6 r22 +#define t7 r23 +#define t8 r24 +#define t9 r25 +#define p0 r26 +#define p1 r27 +#define r28 fp +#define s9 r28 +#define r29 gp +#define r30 ra +#define r31 sp + +#endif /* _SYS_REGDEF_H */ diff --git a/libc/sysdeps/linux/nds32/sys/ucontext.h b/libc/sysdeps/linux/nds32/sys/ucontext.h new file mode 100644 index 0000000..4dca27f --- /dev/null +++ b/libc/sysdeps/linux/nds32/sys/ucontext.h @@ -0,0 +1,112 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +#ifndef _SYS_UCONTEXT_H +#define _SYS_UCONTEXT_H 1 + +#include <features.h> +#include <signal.h> +#include <sys/procfs.h> + +typedef int greg_t; + +/* Number of general registers. */ +#define NGREG 32 + +/* Container for all general registers. */ +typedef elf_gregset_t gregset_t; + +/* Number of each register is the `gregset_t' array. */ +enum +{ + R0 = 0, +#define R0 R0 + R1 = 1, +#define R1 R1 + R2 = 2, +#define R2 R2 + R3 = 3, +#define R3 R3 + R4 = 4, +#define R4 R4 + R5 = 5, +#define R5 R5 + R6 = 6, +#define R6 R6 + R7 = 7, +#define R7 R7 + R8 = 8, +#define R8 R8 + R9 = 9, +#define R9 R9 + R10 = 10, +#define R10 R10 + R11 = 11, +#define R11 R11 + R12 = 12, +#define R12 R12 + R13 = 13, +#define R13 R13 + R14 = 14, +#define R14 R14 + R15 = 15, +#define R15 R15 + R16 = 16, +#define R16 R16 + R17 = 17, +#define R17 R17 + R18 = 18, +#define R18 R18 + R19 = 19, +#define R19 R19 + R20 = 20, +#define R20 R20 + R21 = 21, +#define R21 R21 + R22 = 22, +#define R22 R22 + R23 = 23, +#define R23 R23 + R24 = 24, +#define R24 R24 + R25 = 25, +#define R25 R25 + R26 = 26, +#define R26 R26 + R27 = 27, +#define R27 R27 + R28 = 28, +#define R28 R28 + R29 = 29, +#define R29 R29 + R30 = 30, +#define R30 R30 + R31 = 31 +#define R31 R31 + +}; + +/* Structure to describe FPU registers. */ +typedef elf_fpregset_t fpregset_t; + +/* Context to describe whole processor state. */ +typedef struct + { + gregset_t gregs; + fpregset_t fpregs; + } mcontext_t; + +/* Userlevel context. */ +typedef struct ucontext + { + unsigned long int uc_flags; + struct ucontext *uc_link; + __sigset_t uc_sigmask; + stack_t uc_stack; + mcontext_t uc_mcontext; + long int uc_filler[5]; + } ucontext_t; + +#endif /* sys/ucontext.h */ diff --git a/libc/sysdeps/linux/nds32/sys/user.h b/libc/sysdeps/linux/nds32/sys/user.h new file mode 100644 index 0000000..ca5896d --- /dev/null +++ b/libc/sysdeps/linux/nds32/sys/user.h @@ -0,0 +1,83 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +/* Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#ifndef _SYS_USER_H +#define _SYS_USER_H 1 + +/* The whole purpose of this file is for GDB and GDB only. Don't read + too much into it. Don't use it for anything other than GDB unless + you know what you are doing. */ + +struct user_fpregs +{ + struct fp_reg + { + unsigned int sign1:1; + unsigned int unused:15; + unsigned int sign2:1; + unsigned int exponent:14; + unsigned int j:1; + unsigned int mantissa1:31; + unsigned int mantissa0:32; + } fpregs[8]; + unsigned int fpsr:32; + unsigned int fpcr:32; + unsigned char ftype[8]; + unsigned int init_flag; +}; + +struct user_regs +{ + unsigned long int uregs[18]; +}; + +struct user +{ + struct user_regs regs; /* General registers */ + int u_fpvalid; /* True if math co-processor being used. */ + + unsigned long int u_tsize; /* Text segment size (pages). */ + unsigned long int u_dsize; /* Data segment size (pages). */ + unsigned long int u_ssize; /* Stack segment size (pages). */ + + unsigned long start_code; /* Starting virtual address of text. */ + unsigned long start_stack; /* Starting virtual address of stack. */ + + long int signal; /* Signal that caused the core dump. */ + int reserved; /* No longer used */ + struct user_regs *u_ar0; /* help gdb to find the general registers. */ + + unsigned long magic; /* uniquely identify a core file */ + char u_comm[32]; /* User command that was responsible */ + int u_debugreg[8]; + struct user_fpregs u_fp; /* Floating point registers */ + struct user_fpregs *u_fp0; /* help gdb to find the FP registers. */ +}; + +#include <bits/uClibc_page.h> +#define NBPG PAGE_SIZE +#define UPAGES 1 +#define HOST_TEXT_START_ADDR (u.start_code) +#define HOST_DATA_START_ADDR (u.start_data) +#define HOST_STACK_END_ADDR (u.start_stack + u.u_ssize * NBPG) + +#endif /* sys/user.h */ diff --git a/libc/sysdeps/linux/nds32/syscall.S b/libc/sysdeps/linux/nds32/syscall.S new file mode 100644 index 0000000..032c643 --- /dev/null +++ b/libc/sysdeps/linux/nds32/syscall.S @@ -0,0 +1,60 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +#include <sys/syscall.h> +#include <sysdep.h> + + .text +#ifdef PIC + .pic +#endif + .align 2 + + +#ifdef PIC +#ifdef __NDS32_N1213_43U1H__ +1: + ret +99: + addi $r2, $lp, 0 + jal 1b + sethi $r1, hi20(_GLOBAL_OFFSET_TABLE_) + ori $r1, $r1, lo12(_GLOBAL_OFFSET_TABLE_+4) + add $r1, $lp, $r1 + addi $lp, $r2, 0 +#else /* !__NDS32_N1213_43U1H__ */ +99: + mfusr $r15, $PC + sethi $r1, hi20(_GLOBAL_OFFSET_TABLE_ + 4) + ori $r1, $r1, lo12(_GLOBAL_OFFSET_TABLE_ + 8) + add $r1, $r15, $r1 +#endif /* end of __NDS32_N1213_43U1H__ */ + sethi $r15, hi20(__syscall_error@PLT) + ori $r15, $r15, lo12(__syscall_error@PLT) + add $r15, $r15, $r1 + jr $r15 +#else /* !PIC */ +99: + j __syscall_error +#endif /* end of PIC */ + +#ifdef PIC + .pic +#endif + + .align 2 + .globl syscall + .func syscall + .type syscall, @function + +syscall: + syscall __NR_syscall + bgez $r0, 2f + sltsi $r1, $r0, -4096; + beqz $r1, 99b; +2: + ret + .endfunc + .size syscall, .-syscall diff --git a/libc/sysdeps/linux/nds32/sysdep.S b/libc/sysdeps/linux/nds32/sysdep.S new file mode 100644 index 0000000..4e86a26 --- /dev/null +++ b/libc/sysdeps/linux/nds32/sysdep.S @@ -0,0 +1,125 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +/* Copyright (C) 1991-2003 Free Software Foundation, Inc. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <sysdep.h> +#define _ERRNO_H +#include <bits/errno.h> + +.text + +.globl C_SYMBOL_NAME(errno) +.globl __syscall_error + +ENTRY (__syscall_error) +#ifdef OLD_ABI + subri $r5, $r5, #0 +#else + subri $r0, $r0, #0 +#endif + +#define __syscall_error __syscall_error_1 + +#undef syscall_error +#ifdef NO_UNDERSCORES +__syscall_error: +#else +syscall_error: +#endif + +#ifdef PIC + /* set GP register */ + pushm $gp, $lp +#ifdef __NDS32_N1213_43U1H__ + jal 2f + sethi $gp, hi20(_GLOBAL_OFFSET_TABLE_) + ori $gp, $gp, lo12(_GLOBAL_OFFSET_TABLE_+4) + add $gp, $gp, $lp +#else + mfusr $r15, $PC + sethi $gp, hi20(_GLOBAL_OFFSET_TABLE_+4) + ori $gp, $gp, lo12(_GLOBAL_OFFSET_TABLE_+8) + add $gp, $gp, $r15 +#endif +#endif + +#if defined (EWOULDBLOCK_sys) && EWOULDBLOCK_sys != EAGAIN + /* We translate the system's EWOULDBLOCK error into EAGAIN. + The GNU C library always defines EWOULDBLOCK==EAGAIN. + EWOULDBLOCK_sys is the original number. */ + push $t0 + li $t0, EWOULDBLOCK_sys + bne $r0, $t0, 1f + pop $t0 + li $r0, EAGAIN +1: +#endif + +#ifdef _LIBC_REENTRANT + push $lp + push $r0 +#if defined(NDS32_ABI_2) || defined(NDS32_ABI_2FP) +#else + addi $sp, $sp, -24 +#endif + +#ifdef PIC + bal C_SYMBOL_NAME(__errno_location@PLT) +#else + bal C_SYMBOL_NAME(__errno_location) +#endif +#if defined(NDS32_ABI_2) || defined(NDS32_ABI_2FP) +#else + addi $sp, $sp, 24 +#endif + pop $r1 + + swi $r1, [$r0] + li $r0, -1 + pop $lp +#ifdef PIC + /* restore GP register */ + popm $gp, $lp +#endif +2: + ret +#else +#ifndef PIC + l.w $r1, .L1 + swi $r0, [$r1] + li $r0, -1 + ret + +.L1: .long C_SYMBOL_NAME(errno) +#else + s.w $r0, errno@GOTOFF + li $r0, -1 + + /* restore GP register */ + popm $gp, $lp +2: + ret + +#endif +#endif + +#undef __syscall_error +END (__syscall_error) diff --git a/libc/sysdeps/linux/nds32/sysdep.h b/libc/sysdeps/linux/nds32/sysdep.h new file mode 100644 index 0000000..7472a99 --- /dev/null +++ b/libc/sysdeps/linux/nds32/sysdep.h @@ -0,0 +1,271 @@ +//#include <sysdeps/generic/sysdep.h> +#ifdef __ASSEMBLER__ +/* Define an entry point visible from C. */ +#ifdef PIC +#define ENTRY(name) \ + .pic \ + .align 2; \ + .globl C_SYMBOL_NAME(name); \ + .func C_SYMBOL_NAME(name); \ + .type C_SYMBOL_NAME(name), @function; \ +C_SYMBOL_NAME(name): +#else +#define ENTRY(name) \ + .align 2; \ + .globl C_SYMBOL_NAME(name); \ + .func C_SYMBOL_NAME(name); \ + .type C_SYMBOL_NAME(name), @function; \ +C_SYMBOL_NAME(name): +#endif + +#undef END +#define END(name) \ + .endfunc; \ + .size C_SYMBOL_NAME(name), .-C_SYMBOL_NAME(name) + +/* If compiled for profiling, call `mcount' at the start of each function. */ +#ifdef HAVE_ELF + #undef NO_UNDERSCORES + #define NO_UNDERSCORES +#endif + +#ifdef NO_UNDERSCORES + #define syscall_error __syscall_error +#endif + +#define SYS_ify(syscall_name) (__NR_##syscall_name) + +#define __do_syscall(syscall_name) \ + syscall SYS_ify(syscall_name); + +#define SYSCALL_ERROR_HANDLER +#define SYSCALL_ERROR __syscall_error + + +#ifdef PIC +#ifdef __NDS32_N1213_43U1H__ +#ifdef NDS_ABI_V0 +#define PSEUDO(name, syscall_name, args) \ + .pic; \ + .align 2; \ + 1: ret; \ + 99: addi $r0, $lp, 0; \ + jal 1b; \ + sethi $r1, hi20(_GLOBAL_OFFSET_TABLE_); \ + ori $r1, $r1, lo12(_GLOBAL_OFFSET_TABLE_+4); \ + add $r1, $lp, $r1; \ + addi $lp, $r0, 0; \ + sethi $r15, hi20(SYSCALL_ERROR@PLT); \ + ori $r15, $r15, lo12(SYSCALL_ERROR@PLT); \ + add $r15, $r15, $r1; \ + jr $r15; \ + nop; \ + ENTRY(name); \ + __do_syscall(syscall_name); \ + bgez $r5, 2f; \ + sltsi $r0, $r5, -4096; \ + beqz $r0, 99b; \ + 2: +#else +#define PSEUDO(name, syscall_name, args) \ + .pic; \ + .align 2; \ + 1: ret; \ + 99: addi $r2, $lp, 0; \ + jal 1b; \ + sethi $r1, hi20(_GLOBAL_OFFSET_TABLE_); \ + ori $r1, $r1, lo12(_GLOBAL_OFFSET_TABLE_+4); \ + add $r1, $lp, $r1; \ + addi $lp, $r2, 0; \ + sethi $r15, hi20(SYSCALL_ERROR@PLT); \ + ori $r15, $r15, lo12(SYSCALL_ERROR@PLT); \ + add $r15, $r15, $r1; \ + jr $r15; \ + nop; \ + ENTRY(name); \ + __do_syscall(syscall_name); \ + bgez $r0, 2f; \ + sltsi $r1, $r0, -4096; \ + beqz $r1, 99b; \ + 2: +#endif +#else +#define PSEUDO(name, syscall_name, args) \ + .pic; \ + .align 2; \ + 99: mfusr $r15, $PC; \ + sethi $r1, hi20(_GLOBAL_OFFSET_TABLE_ + 4); \ + ori $r1, $r1, lo12(_GLOBAL_OFFSET_TABLE_ + 8); \ + add $r1, $r15, $r1; \ + sethi $r15, hi20(SYSCALL_ERROR@PLT); \ + ori $r15, $r15, lo12(SYSCALL_ERROR@PLT); \ + add $r15, $r15, $r1; \ + jr $r15; \ + nop; \ + ENTRY(name); \ + __do_syscall(syscall_name); \ + bgez $r0, 2f; \ + sltsi $r1, $r0, -4096; \ + beqz $r1, 99b; \ + 2: +#endif +#else +#ifdef OLD2_ABI +#define PSEUDO(name, syscall_name, args) \ + .align 2; \ + 99: j SYSCALL_ERROR; \ + nop; \ + ENTRY(name); \ + __do_syscall(syscall_name); \ + bgez $r5, 2f; \ + sltsi $r0, $r5, -4096; \ + beqz $r0, 99b; \ + 2: +#else +#define PSEUDO(name, syscall_name, args) \ + .align 2; \ + 99: j SYSCALL_ERROR; \ + nop; \ + ENTRY(name); \ + __do_syscall(syscall_name); \ + bgez $r0, 2f; \ + sltsi $r1, $r0, -4096; \ + beqz $r1, 99b; \ + 2: +#endif +#endif + + +#define PSEUDO_NOERRNO(name, syscall_name, args) \ + ENTRY(name); \ + __do_syscall(syscall_name); + +#undef PSEUDO_END +#define PSEUDO_END(sym) \ + SYSCALL_ERROR_HANDLER \ + END(sym) + +#undef PSEUDO_END_ERRVAL +#define PSEUDO_END_ERRVAL(sym) END(sym) + +#define PSEUDO_ERRVAL(name, syscall_name, args) PSEUDO_NOERRNO(name, syscall_name, args) + +#define ret_ERRVAL ret + +#define ret_NOERRNO ret +#if defined NOT_IN_libc + #define SYSCALL_ERROR __local_syscall_error + #ifdef PIC + #ifdef __NDS32_N1213_43U1H__ + #ifdef NDS_ABI_V0 + #define SYSCALL_ERROR_HANDLER \ + __local_syscall_error: pushm $gp, $lp, $sp; \ + jal 1f; \ + sethi $gp, hi20(_GLOBAL_OFFSET_TABLE_); \ + ori $gp, $gp, lo12(_GLOBAL_OFFSET_TABLE_+4); \ + add $gp, $gp, $lp; \ + neg $r5, $r5; \ + push $r5; \ + addi $sp, $sp, -28; \ + bal C_SYMBOL_NAME(__errno_location@PLT); \ + addi $sp, $sp, 28; \ + pop $r1; \ + swi $r1, [$r5]; \ + li $r5, -1; \ + popm $gp, $lp, $sp; \ + 1: ret; + #else + #define SYSCALL_ERROR_HANDLER \ + __local_syscall_error: pushm $gp, $lp, $sp; \ + jal 1f; \ + sethi $gp, hi20(_GLOBAL_OFFSET_TABLE_); \ + ori $gp, $gp, lo12(_GLOBAL_OFFSET_TABLE_+4); \ + add $gp, $gp, $lp; \ + neg $r0, $r0; \ + push $r0; \ + #if defined(NDS32_ABI_2) || defined(NDS32_ABI_2FP) \ + addi $sp, $sp, -4; \ + #else \ + addi $sp, $sp, -28; \ + #endif \ + bal C_SYMBOL_NAME(__errno_location@PLT); \ + #if defined(NDS32_ABI_2) || defined(NDS32_ABI_2FP) \ + addi $sp, $sp, 4; \ + #else \ + addi $sp, $sp, 28; \ + #endif \ + pop $r1; \ + swi $r1, [$r0]; \ + li $r0, -1; \ + popm $gp, $lp, $sp; \ + 1: ret; + #endif + #else + #define SYSCALL_ERROR_HANDLER \ + __local_syscall_error: pushm $gp, $lp, $sp; \ + mfusr $r15, $PC; \ + sethi $gp, hi20(_GLOBAL_OFFSET_TABLE_+4); \ + ori $gp, $gp, lo12(_GLOBAL_OFFSET_TABLE_+8); \ + add $gp, $gp, $r15; \ + neg $r0, $r0; \ + push $r0; \ + #if defined(NDS32_ABI_2) || defined(NDS32_ABI_2FP) \ + addi $sp, $sp, -4; \ + #else \ + addi $sp, $sp, -28; \ + #endif \ + bal C_SYMBOL_NAME(__errno_location@PLT); \ + #if defined(NDS32_ABI_2) || defined(NDS32_ABI_2FP) \ + addi $sp, $sp, 4; \ + #else \ + addi $sp, $sp, 28; \ + #endif \ + pop $r1; \ + swi $r1, [$r0]; \ + li $r0, -1; \ + popm $gp, $lp, $sp; \ + 1: ret; + #endif + #else + #ifdef NDS_ABI_V0 + #define SYSCALL_ERROR_HANDLER \ + __local_syscall_error: push $lp; \ + neg $r5, $r5; \ + push $r5; \ + addi $sp, $sp, -28; \ + bal C_SYMBOL_NAME(__errno_location); \ + addi $sp, $sp, 28; \ + pop $r1; \ + swi $r1, [$r5]; \ + li $r5, -1; \ + pop $lp; \ + ret; + #else + #define SYSCALL_ERROR_HANDLER \ + __local_syscall_error: push $lp; \ + neg $r0, $r0; \ + push $r0; \ + #if defined(NDS32_ABI_2) || defined(NDS32_ABI_2FP) \ + addi $sp, $sp, -4; \ + #else \ + addi $sp, $sp, -28; \ + #endif \ + bal C_SYMBOL_NAME(__errno_location); \ + #if defined(NDS32_ABI_2) || defined(NDS32_ABI_2FP) \ + addi $sp, $sp, 4; \ + #else \ + addi $sp, $sp, 28; \ + #endif \ + pop $r1; \ + swi $r1, [$r0]; \ + li $r0, -1; \ + pop $lp; \ + ret; + #endif + #endif + +#else + #define SYSCALL_ERROR_HANDLER + #define SYSCALL_ERROR __syscall_error +#endif +#endif /* __ASSEMBLER__ */ diff --git a/libc/sysdeps/linux/nds32/vfork.S b/libc/sysdeps/linux/nds32/vfork.S new file mode 100644 index 0000000..c955359 --- /dev/null +++ b/libc/sysdeps/linux/nds32/vfork.S @@ -0,0 +1,87 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +/* Copyright (C) 1999, 2002, 2003 Free Software Foundation, Inc. + Contributed by Philip Blundell &lt;philb(a)gnu.org&gt;rg>. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <sys/syscall.h> +#include <sysdep.h> + +#define _ERRNO_H 1 + +/* Clone the calling process, but without copying the whole address space. + The calling process is suspended until the new process exits or is + replaced by a call to `execve'. Return -1 for errors, 0 to the new process, + and the process ID of the new process to the old process. */ + +ENTRY (__vfork) +#ifdef PIC +.pic +#endif + +#ifdef __NR_vfork + + syscall __NR_vfork + bltz $r0, 2f +1: + ret +2: + sltsi $r1, $r0, -4096 + bnez $r1, 1b; + +# ifdef PIC + #ifdef __NDS32_N1213_43U1H__ + ! save lp + addi $r2, $lp, 0 + + ! set r1 as gp + jal 1b + sethi $r1, hi20(_GLOBAL_OFFSET_TABLE_) + ori $r1, $r1, lo12(_GLOBAL_OFFSET_TABLE_+4) + add $r1, $lp, $r1 + + ! restore lp + addi $lp, $r2, 0 + #else + ! set r1 as gp + mfusr $r15, $PC + sethi $r1, hi20(_GLOBAL_OFFSET_TABLE_+4) + ori $r1, $r1, lo12(_GLOBAL_OFFSET_TABLE_+8) + add $r1, $r1, $r15 + #endif + + ! r15=C_SYMBOL_NAME(__syscall_error)@PLT + sethi $r15, hi20(C_SYMBOL_NAME(__syscall_error)@PLT) + ori $r15, $r15, lo12(C_SYMBOL_NAME(__syscall_error)@PLT) + add $r15, $r15, $r1 + + ! jump to SYSCALL_ERROR + jr $r15 +# else + j C_SYMBOL_NAME(__syscall_error) +# endif + +#else +# error "__NR_vfork not available" +#endif + +PSEUDO_END (__vfork) +weak_alias (__vfork, vfork) +libc_hidden_def(vfork) diff --git a/libpthread/linuxthreads/sysdeps/nds32/pspinlock.c b/libpthread/linuxthreads/sysdeps/nds32/pspinlock.c new file mode 100644 index 0000000..f8adf07 --- /dev/null +++ b/libpthread/linuxthreads/sysdeps/nds32/pspinlock.c @@ -0,0 +1,102 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +/* POSIX spinlock implementation. + Copyright (C) 2000 Free Software Foundation, Inc. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public License as + published by the Free Software Foundation; either version 2.1 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <errno.h> +#include <pthread.h> +#include "internals.h" + +int +__pthread_spin_lock (pthread_spinlock_t *lock) +{ + unsigned int val ; + unsigned int temp ; + unsigned int offset = 0 ; + + __asm__ __volatile__ ( + "1:\n\t" + "llw %0, [%1 + %2 << 0]\n\t" + "bnez %0, 1b\n\t" + "movi %3, #0x1\n\t" + "scw %3, [%1 + %2 << 0]\n\t" + "beqz %3, 1b\n\t" + : "=&r" (val) + : "r" (lock), "r" (offset), "r" (temp) + : "memory" ) ; + + return 0 ; +} +weak_alias (__pthread_spin_lock, pthread_spin_lock) + + +int +__pthread_spin_trylock (pthread_spinlock_t *lock) +{ + unsigned int val ; + unsigned int temp ; + unsigned int offset = 0 ; + + __asm__ __volatile__ ( + "llw %0, [%1 + %2 << 0]\n\t" + "bnez %0, 1f\n\t" + "movi %3, #0x1\n\t" + "scw %3, [%1 + %2 << 0]\n\t" + "beqz %3, 1f\n\t" + "movi %0, #0x0\n\t" + "b 2f\n\t" + "1:\n\t" + "movi %0, #16\n\t" + "2:\n\t" + : "=&r" (val) + : "r" (lock), "r" (offset), "r" (temp) + : "memory" ) ; + + return val; +} +weak_alias (__pthread_spin_trylock, pthread_spin_trylock) + +int +__pthread_spin_unlock (pthread_spinlock_t *lock) +{ + return *lock = 0; +} +weak_alias (__pthread_spin_unlock, pthread_spin_unlock) + + +int +__pthread_spin_init (pthread_spinlock_t *lock, int pshared) +{ + /* We can ignore the `pshared' parameter. Since we are busy-waiting + all processes which can access the memory location `lock' points + to can use the spinlock. */ + return *lock = 0; +} +weak_alias (__pthread_spin_init, pthread_spin_init) + + +int +__pthread_spin_destroy (pthread_spinlock_t *lock) +{ + /* Nothing to do. */ + return 0; +} +weak_alias (__pthread_spin_destroy, pthread_spin_destroy) diff --git a/libpthread/linuxthreads/sysdeps/nds32/pt-machine.h b/libpthread/linuxthreads/sysdeps/nds32/pt-machine.h new file mode 100644 index 0000000..5bbb9e8 --- /dev/null +++ b/libpthread/linuxthreads/sysdeps/nds32/pt-machine.h @@ -0,0 +1,66 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +/* Machine-dependent pthreads configuration and inline functions. + Copyright (C) 1997, 1998, 2000, 2002, 2003 Free Software Foundation, Inc. + Contributed by Philip Blundell &lt;philb(a)gnu.org&gt;rg>. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public License as + published by the Free Software Foundation; either version 2.1 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#ifndef _PT_MACHINE_H +#define _PT_MACHINE_H 1 + +#include <features.h> + +#ifndef PT_EI +# define PT_EI __extern_always_inline +#endif + +extern long int testandset (int *spinlock); +extern int __compare_and_swap (long int *p, long int oldval, long int newval); + +/* Spinlock implementation; required. */ +PT_EI long int +testandset (int *spinlock) +{ + unsigned int val; + unsigned int temp; + unsigned int offset = 0; + + __asm__ __volatile__ ( + "1:\n\t" + "llw %[val], [%[spinlock] + %[offset] << 0]\n\t" + "move %[temp], #0x1\n\t" + "beq %[val], %[temp], 2f\n\t" + "scw %[temp], [%[spinlock] + %[offset] << 0]\n\t" + "beqz %[temp], 1b\n\t" + "2:\n\t" + : [val] "=&r" (val), [temp] "=&r" (temp) + : [spinlock] "r" (spinlock), [offset] "r" (offset) + : "memory" ) ; + + return val ; +} + + +/* Get some notion of the current stack. Need not be exactly the top + of the stack, just something somewhere in the current frame. */ +#define CURRENT_STACK_FRAME stack_pointer +register char * stack_pointer __asm__ ("$sp"); + +#endif /* pt-machine.h */ diff --git a/librt/spawn.c b/librt/spawn.c index 07d4019..79f5b06 100644 --- a/librt/spawn.c +++ b/librt/spawn.c @@ -20,6 +20,7 @@ #include <unistd.h> #include <signal.h> #include <stdbool.h> +#include <sys/syscall.h> #include <fcntl.h> #include <sys/resource.h> diff --git a/test/math/libm-test-ulps-xtensa b/test/math/libm-test-ulps-nds32 similarity index 100% copy from test/math/libm-test-ulps-xtensa copy to test/math/libm-test-ulps-nds32 hooks/post-receive -- uClibc-ng - small C library for embedded systems