[uclibc-ng-devel] [PATCH] csky: port to uclibc-ng

Follow the steps to build c-sky uclibc linux system: 1. git clone https://github.com/c-sky/buildroot.git 2. cd buildroot 3. make qemu_csky_ck810_uclibc_defconfig 4. make Follow the buildroot/board/qemu/csky/readme.txt to run. This buildroot toolchain is pre-build, But you can rebuild the c-sky uclibc-ng alone and install it to the buildroot sysroot manually. We'll try our best to improve the uclibc-ng continuously. Signed-off-by: Guo Ren &lt;ren_guo(a)c-sky.com&gt; --- MAINTAINERS | 3 + Rules.mak | 15 + extra/Configs/Config.csky | 25 ++ extra/Configs/Config.in | 8 + extra/Configs/defconfigs/csky/defconfig | 1 + include/elf.h | 61 +++ ldso/ldso/csky/dl-startup.h | 115 ++++++ ldso/ldso/csky/dl-syscalls.h | 1 + ldso/ldso/csky/dl-sysdep.h | 89 +++++ ldso/ldso/csky/elfinterp.c | 297 ++++++++++++++ ldso/ldso/csky/read_tp.S | 17 + ldso/ldso/csky/resolve.S | 72 ++++ libc/string/csky/Makefile | 6 + libc/string/csky/cskyv1/memcpy.S | 211 ++++++++++ libc/string/csky/cskyv1/strcmp.S | 185 +++++++++ libc/string/csky/cskyv1/strcpy.S | 139 +++++++ libc/string/csky/cskyv2/abiv2_memcpy.S | 184 +++++++++ libc/string/csky/cskyv2/abiv2_strcmp.S | 168 ++++++++ libc/string/csky/cskyv2/abiv2_strcpy.S | 129 ++++++ libc/string/csky/cskyv2/macro.S | 13 + libc/string/csky/memcpy.S | 7 + libc/string/csky/strcmp.S | 7 + libc/string/csky/strcpy.S | 7 + libc/sysdeps/linux/common/posix_fadvise.c | 2 +- libc/sysdeps/linux/common/posix_fadvise64.c | 2 +- libc/sysdeps/linux/csky/Makefile | 6 + libc/sysdeps/linux/csky/Makefile.arch | 6 + libc/sysdeps/linux/csky/__longjmp.S | 39 ++ libc/sysdeps/linux/csky/__syscall_error.c | 9 + libc/sysdeps/linux/csky/bits/atomic.h | 93 +++++ libc/sysdeps/linux/csky/bits/endian.h | 10 + libc/sysdeps/linux/csky/bits/fcntl.h | 193 +++++++++ libc/sysdeps/linux/csky/bits/fenv.h | 58 +++ libc/sysdeps/linux/csky/bits/kernel_stat.h | 60 +++ libc/sysdeps/linux/csky/bits/kernel_types.h | 47 +++ libc/sysdeps/linux/csky/bits/mathinline.h | 445 +++++++++++++++++++++ libc/sysdeps/linux/csky/bits/setjmp.h | 19 + libc/sysdeps/linux/csky/bits/shm.h | 85 ++++ libc/sysdeps/linux/csky/bits/sigcontextinfo.h | 26 ++ libc/sysdeps/linux/csky/bits/stackinfo.h | 6 + libc/sysdeps/linux/csky/bits/syscalls.h | 113 ++++++ .../sysdeps/linux/csky/bits/uClibc_arch_features.h | 46 +++ libc/sysdeps/linux/csky/bits/wordsize.h | 1 + libc/sysdeps/linux/csky/cacheflush.c | 2 + libc/sysdeps/linux/csky/clone.c | 47 +++ libc/sysdeps/linux/csky/crt1.S | 95 +++++ libc/sysdeps/linux/csky/crti.S | 13 + libc/sysdeps/linux/csky/crtn.S | 11 + libc/sysdeps/linux/csky/csky_clone.S | 20 + libc/sysdeps/linux/csky/jmpbuf-unwind.h | 15 + libc/sysdeps/linux/csky/libc-read_tp.S | 1 + libc/sysdeps/linux/csky/setjmp.S | 43 ++ libc/sysdeps/linux/csky/sys/cachectl.h | 10 + libc/sysdeps/linux/csky/sys/procfs.h | 126 ++++++ libc/sysdeps/linux/csky/sys/ucontext.h | 17 + libc/sysdeps/linux/csky/sys/user.h | 48 +++ libc/sysdeps/linux/csky/sysdep.h | 204 ++++++++++ libc/sysdeps/linux/csky/vfork.S | 6 + libpthread/nptl/sysdeps/csky/Makefile | 6 + libpthread/nptl/sysdeps/csky/Makefile.arch | 7 + libpthread/nptl/sysdeps/csky/dl-tls.h | 9 + libpthread/nptl/sysdeps/csky/libc-tls.c | 18 + libpthread/nptl/sysdeps/csky/pthread_spin_lock.S | 18 + .../nptl/sysdeps/csky/pthread_spin_trylock.S | 16 + libpthread/nptl/sysdeps/csky/pthreaddef.h | 19 + libpthread/nptl/sysdeps/csky/tcb-offsets.sym | 10 + libpthread/nptl/sysdeps/csky/tls.h | 170 ++++++++ .../nptl/sysdeps/unix/sysv/linux/csky/Makefile | 6 + .../sysdeps/unix/sysv/linux/csky/Makefile.arch | 4 + .../unix/sysv/linux/csky/bits/pthreadtypes.h | 181 +++++++++ .../sysdeps/unix/sysv/linux/csky/bits/semaphore.h | 35 ++ .../sysdeps/unix/sysv/linux/csky/createthread.c | 5 + .../nptl/sysdeps/unix/sysv/linux/csky/fork.c | 31 ++ .../sysdeps/unix/sysv/linux/csky/lowlevellock.h | 281 +++++++++++++ .../sysdeps/unix/sysv/linux/csky/pthread_once.c | 100 +++++ .../sysdeps/unix/sysv/linux/csky/sysdep-cancel.h | 33 ++ 76 files changed, 4631 insertions(+), 2 deletions(-) create mode 100644 extra/Configs/Config.csky create mode 100644 extra/Configs/defconfigs/csky/defconfig create mode 100644 ldso/ldso/csky/dl-startup.h create mode 100644 ldso/ldso/csky/dl-syscalls.h create mode 100644 ldso/ldso/csky/dl-sysdep.h create mode 100644 ldso/ldso/csky/elfinterp.c create mode 100644 ldso/ldso/csky/read_tp.S create mode 100644 ldso/ldso/csky/resolve.S create mode 100644 libc/string/csky/Makefile create mode 100644 libc/string/csky/cskyv1/memcpy.S create mode 100644 libc/string/csky/cskyv1/strcmp.S create mode 100644 libc/string/csky/cskyv1/strcpy.S create mode 100644 libc/string/csky/cskyv2/abiv2_memcpy.S create mode 100644 libc/string/csky/cskyv2/abiv2_strcmp.S create mode 100644 libc/string/csky/cskyv2/abiv2_strcpy.S create mode 100644 libc/string/csky/cskyv2/macro.S create mode 100644 libc/string/csky/memcpy.S create mode 100644 libc/string/csky/strcmp.S create mode 100644 libc/string/csky/strcpy.S create mode 100644 libc/sysdeps/linux/csky/Makefile create mode 100644 libc/sysdeps/linux/csky/Makefile.arch create mode 100644 libc/sysdeps/linux/csky/__longjmp.S create mode 100644 libc/sysdeps/linux/csky/__syscall_error.c create mode 100644 libc/sysdeps/linux/csky/bits/atomic.h create mode 100644 libc/sysdeps/linux/csky/bits/endian.h create mode 100644 libc/sysdeps/linux/csky/bits/fcntl.h create mode 100644 libc/sysdeps/linux/csky/bits/fenv.h create mode 100644 libc/sysdeps/linux/csky/bits/kernel_stat.h create mode 100644 libc/sysdeps/linux/csky/bits/kernel_types.h create mode 100644 libc/sysdeps/linux/csky/bits/mathinline.h create mode 100644 libc/sysdeps/linux/csky/bits/setjmp.h create mode 100644 libc/sysdeps/linux/csky/bits/shm.h create mode 100644 libc/sysdeps/linux/csky/bits/sigcontextinfo.h create mode 100644 libc/sysdeps/linux/csky/bits/stackinfo.h create mode 100644 libc/sysdeps/linux/csky/bits/syscalls.h create mode 100644 libc/sysdeps/linux/csky/bits/uClibc_arch_features.h create mode 100644 libc/sysdeps/linux/csky/bits/wordsize.h create mode 100644 libc/sysdeps/linux/csky/cacheflush.c create mode 100644 libc/sysdeps/linux/csky/clone.c create mode 100644 libc/sysdeps/linux/csky/crt1.S create mode 100644 libc/sysdeps/linux/csky/crti.S create mode 100644 libc/sysdeps/linux/csky/crtn.S create mode 100644 libc/sysdeps/linux/csky/csky_clone.S create mode 100644 libc/sysdeps/linux/csky/jmpbuf-unwind.h create mode 100644 libc/sysdeps/linux/csky/libc-read_tp.S create mode 100644 libc/sysdeps/linux/csky/setjmp.S create mode 100644 libc/sysdeps/linux/csky/sys/cachectl.h create mode 100644 libc/sysdeps/linux/csky/sys/procfs.h create mode 100644 libc/sysdeps/linux/csky/sys/ucontext.h create mode 100644 libc/sysdeps/linux/csky/sys/user.h create mode 100644 libc/sysdeps/linux/csky/sysdep.h create mode 100644 libc/sysdeps/linux/csky/vfork.S create mode 100644 libpthread/nptl/sysdeps/csky/Makefile create mode 100644 libpthread/nptl/sysdeps/csky/Makefile.arch create mode 100644 libpthread/nptl/sysdeps/csky/dl-tls.h create mode 100644 libpthread/nptl/sysdeps/csky/libc-tls.c create mode 100644 libpthread/nptl/sysdeps/csky/pthread_spin_lock.S create mode 100644 libpthread/nptl/sysdeps/csky/pthread_spin_trylock.S create mode 100644 libpthread/nptl/sysdeps/csky/pthreaddef.h create mode 100644 libpthread/nptl/sysdeps/csky/tcb-offsets.sym create mode 100644 libpthread/nptl/sysdeps/csky/tls.h create mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/csky/Makefile create mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/csky/Makefile.arch create mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/csky/bits/pthreadtypes.h create mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/csky/bits/semaphore.h create mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/csky/createthread.c create mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/csky/fork.c create mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/csky/lowlevellock.h create mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/csky/pthread_once.c create mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/csky/sysdep-cancel.h diff --git a/MAINTAINERS b/MAINTAINERS index 642f903..d5aa024 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -7,6 +7,9 @@ ARC: Alexey Brodkin &lt;Alexey.Brodkin(a)synopsys.com&gt; Vineet Gupta &lt;Vineet.Gupta1(a)synopsys.com&gt; +CSKY: +Guo Ren &lt;ren_guo(a)c-sky.com&gt; + MIPS: Matthew Fortune &lt;Matthew.Fortune(a)imgtec.com&gt; diff --git a/Rules.mak b/Rules.mak index 0aa29a7..b553cd4 100644 --- a/Rules.mak +++ b/Rules.mak @@ -453,6 +453,21 @@ ifeq ($(TARGET_ARCH),cris) PIEFLAG_NAME:=-fpie endif +ifeq ($(TARGET_ARCH),csky) + # In csky gas implement, we use $t and $d to detect .text or literal pool. + # So we couldn't strip them for objdump. + STRIP_FLAGS += -K "$$"t -K "$$"d + + CPU_CFLAGS-$(CK610) += -mcpu=ck610f + CPU_CFLAGS-$(CK810) += -mcpu=ck810f + CPU_CFLAGS-$(CK807) += -mcpu=ck807f + + CPU_CFLAGS-$(UCLIBC_HAS_FPU) += -mhard-float + + CPU_CFLAGS-$(ARCH_LITTLE_ENDIAN) += -mlittle-endian + CPU_CFLAGS-$(ARCH_BIG_ENDIAN) += -mbig-endian +endif + ifeq ($(TARGET_ARCH),m68k) # -fPIC is only supported for 68020 and above. It is not supported # for 68000, 68010, or Coldfire. diff --git a/extra/Configs/Config.csky b/extra/Configs/Config.csky new file mode 100644 index 0000000..704f7be --- /dev/null +++ b/extra/Configs/Config.csky @@ -0,0 +1,25 @@ +config TARGET_ARCH + string + default "csky" + +config FORCE_OPTIONS_FOR_ARCH + bool + default y + select ARCH_ANY_ENDIAN + select ARCH_HAS_DEPRECATED_SYSCALLS + select ARCH_USE_MMU + select ARCH_HAS_MMU + +choice + prompt "Target Processor Type" + default CK610 + +config CK610 + bool "ck610" +config CK810 + bool "ck810" +config CK807 + bool "ck807" + +endchoice + diff --git a/extra/Configs/Config.in b/extra/Configs/Config.in index ce832b5..b5ee294 100644 --- a/extra/Configs/Config.in +++ b/extra/Configs/Config.in @@ -22,6 +22,7 @@ choice default TARGET_avr32 if DESIRED_TARGET_ARCH = "avr32" default TARGET_bfin if DESIRED_TARGET_ARCH = "bfin" default TARGET_cris if DESIRED_TARGET_ARCH = "cris" + default TARGET_csky if DESIRED_TARGET_ARCH = "csky" default TARGET_frv if DESIRED_TARGET_ARCH = "frv" default TARGET_h8300 if DESIRED_TARGET_ARCH = "h8300" default TARGET_hppa if DESIRED_TARGET_ARCH = "hppa" @@ -70,6 +71,9 @@ config TARGET_c6x config TARGET_cris bool "cris" +config TARGET_csky + bool "csky" + config TARGET_frv bool "frv" @@ -156,6 +160,10 @@ if TARGET_cris source "extra/Configs/Config.cris" endif +if TARGET_csky +source "extra/Configs/Config.csky" +endif + if TARGET_frv source "extra/Configs/Config.frv" endif diff --git a/extra/Configs/defconfigs/csky/defconfig b/extra/Configs/defconfigs/csky/defconfig new file mode 100644 index 0000000..da837fc --- /dev/null +++ b/extra/Configs/defconfigs/csky/defconfig @@ -0,0 +1 @@ +TARGET_csky=y diff --git a/include/elf.h b/include/elf.h index c8488bb..fcb546a 100644 --- a/include/elf.h +++ b/include/elf.h @@ -1200,6 +1200,67 @@ typedef struct #define ELF64_M_SIZE(info) ELF32_M_SIZE (info) #define ELF64_M_INFO(sym, size) ELF32_M_INFO (sym, size) +/* C-SKY relocs. */ + +#define R_CKCORE_NONE 0 +#define R_CKCORE_ADDR32 1 +#define R_CKCORE_PCRELIMM8BY4 2 +#define R_CKCORE_PCRELIMM11BY2 3 +#define R_CKCORE_PCRELIMM4BY2 4 +#define R_CKCORE_PCREL32 5 +#define R_CKCORE_PCRELJSR_IMM11BY2 6 +#define R_CKCORE_GNU_VTINHERIT 7 +#define R_CKCORE_GNU_VTENTRY 8 +#define R_CKCORE_RELATIVE 9 +#define R_CKCORE_COPY 10 +#define R_CKCORE_GLOB_DAT 11 +#define R_CKCORE_JUMP_SLOT 12 +#define R_CKCORE_GOTOFF 13 +#define R_CKCORE_GOTPC 14 +#define R_CKCORE_GOT32 15 +#define R_CKCORE_PLT32 16 +#define R_CKCORE_ADDRGOT 17 +#define R_CKCORE_ADDRPLT 18 +#define R_CKCORE_PCREL_IMM26BY2 19 +#define R_CKCORE_PCREL_IMM16BY2 20 +#define R_CKCORE_PCREL_IMM16BY4 21 +#define R_CKCORE_PCREL_IMM10BY2 22 +#define R_CKCORE_PCREL_IMM10BY4 23 +#define R_CKCORE_ADDR_HI16 24 +#define R_CKCORE_ADDR_LO16 25 +#define R_CKCORE_GOTPC_HI16 26 +#define R_CKCORE_GOTPC_LO16 27 +#define R_CKCORE_GOTOFF_HI16 28 +#define R_CKCORE_GOTOFF_LO16 29 +#define R_CKCORE_GOT12 30 +#define R_CKCORE_GOT_HI16 31 +#define R_CKCORE_GOT_LO16 32 +#define R_CKCORE_PLT12 33 +#define R_CKCORE_PLT_HI16 34 +#define R_CKCORE_PLT_LO16 35 +#define R_CKCORE_ADDRGOT_HI16 36 +#define R_CKCORE_ADDRGOT_LO16 37 +#define R_CKCORE_ADDRPLT_HI16 38 +#define R_CKCORE_ADDRPLT_LO16 39 +#define R_CKCORE_PCREL_JSR_IMM26BY2 40 +#define R_CKCORE_TOFFSET_LO16 41 +#define R_CKCORE_DOFFSET_LO16 42 +#define R_CKCORE_PCREL_IMM18BY2 43 +#define R_CKCORE_DOFFSET_IMM18 44 +#define R_CKCORE_DOFFSET_IMM18BY2 45 +#define R_CKCORE_DOFFSET_IMM18BY4 46 +#define R_CKCORE_GOTOFF_IMM18 47 +#define R_CKCORE_GOT_IMM18BY4 48 +#define R_CKCORE_PLT_IMM18BY4 49 +#define R_CKCORE_PCREL_IMM7BY4 50 +#define R_CKCORE_TLS_LE32 51 +#define R_CKCORE_TLS_IE32 52 +#define R_CKCORE_TLS_GD32 53 +#define R_CKCORE_TLS_LDM32 54 +#define R_CKCORE_TLS_LDO32 55 +#define R_CKCORE_TLS_DTPMOD32 56 +#define R_CKCORE_TLS_DTPOFF32 57 +#define R_CKCORE_TLS_TPOFF32 58 /* Motorola 68k specific definitions. */ diff --git a/ldso/ldso/csky/dl-startup.h b/ldso/ldso/csky/dl-startup.h new file mode 100644 index 0000000..0a74ab6 --- /dev/null +++ b/ldso/ldso/csky/dl-startup.h @@ -0,0 +1,115 @@ +#ifdef __CSKYABIV2__ + +__asm__ ( + " .text\n\t" + " .globl _start\n\t" + "_start:\n\t" + " mov a0, sp\n\t" + " bsr _dl_start\n\t" + " # Return from _dl_start, user entry point address in a0 \n\t" + " # the code is PIC, so get global offset table\n\t" + " grs gb,.Lgetpc1\n\t" + ".Lgetpc1:\n\t " + " lrw t0, .Lgetpc1@GOTPC\n\t" + " add gb, gb,t0\n\t" + " lrw r5, _dl_skip_args@GOT\n\t" + " ldr.w r5, (gb, r5 << 0)\n\t" + " # get the value of variable _dl_skip_args in r6\n\t" + " ldw r6, (r5, 0)\n\t" + " # get the argc in r7 \n\t" + " ldw r7, (sp, 0)\n\t" + " # adjust the argc, this may be a bug when _dl_skip_args > argc\n\t" + " rsub r6, r7\n\t" + " # adjust the stack\n\t" + " mov r7, r6\n\t" + " lsli r6, 2\n\t" + " # adjust the stack pointer,this may be a bug, " + " # because it must be 8 bytes align" + " addu sp, r6\n\t" + " stw r7, (sp, 0)\n\t" + " lrw r7, _dl_fini@GOTOFF\n\t" + " addu r7, gb\n\t" + " jmp a0" +); +#else +__asm__ ( + " .text\n\t" + " .globl _start\n\t" + "_start:\n\t" + " mov r2, r0\n\t" +# if defined(__ck810__) + " bsr _dl_start\n\t" +#else + " # the code is PIC, so get global offset table\n\t" + " bsr .Lgetpc0\n\t" + ".Lgetpc0:\n\t " + " lrw r14, .Lgetpc0@GOTPC\n\t" + " add r14, r15\n\t" + " lrw r4, _dl_start@GOTOFF\n\t" + " add r4, r14\n\t" + " jsr r4\n\t" +#endif + " # Return from _dl_start, user entry point address in r2 \n\t" + " # the code is PIC, so get global offset table\n\t" + " bsr .Lgetpc1\n\t" + ".Lgetpc1:\n\t " + " lrw r3, .Lgetpc1@GOTPC\n\t" + " add r3, r15\n\t" +# if defined(__ck810__) + " ldw r5, (r3, _dl_skip_args@GOT)\n\t" +#else + " lrw r4, _dl_skip_args@GOT\n\t" + " add r4, r3\n\t" + " ldw r5, (r4, 0)\n\t" +#endif + " # get the value of variable _dl_skip_args in r6\n\t" + " ldw r6, (r5, 0)\n\t" + " # get the argc in r7 \n\t" + " ldw r7, (r0, 0)\n\t" + " # adjust the argc, this may be a bug when _dl_skip_args > argc\n\t" + " rsub r6, r7\n\t" + " # adjust the stack\n\t" + " mov r7, r6\n\t" + " lsli r6, 2\n\t" + " # adjust the stack pointer,this may be a bug, " + " # because it must be 8 bytes align" + " addu r0, r6\n\t" + " stw r7, (r0, 0)\n\t" + " lrw r7, _dl_fini@GOTOFF\n\t" + " addu r7, r3\n\t" + " jmp r2" +); + +#endif + +/* Get a pointer to the argv array. */ +#define GET_ARGV(ARGVP, ARGS) ARGVP = (((unsigned long*)ARGS)+1) + +/* Function calls are not safe until the GOT relocations have been done. */ +#define NO_FUNCS_BEFORE_BOOTSTRAP +/* 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, attribute_unused Elf32_Sym *symtab) +{ + switch (ELF32_R_TYPE(rpnt->r_info)) + { + case R_CKCORE_RELATIVE: + *reloc_addr = load_addr + rpnt->r_addend; + break; + case R_CKCORE_GLOB_DAT: + case R_CKCORE_JUMP_SLOT: + *reloc_addr = symbol_addr; + break; + case R_CKCORE_ADDR32: + *reloc_addr = symbol_addr + rpnt->r_addend; + break; + case R_CKCORE_NONE: + break; + + default: + _dl_exit(1); + } +} + + diff --git a/ldso/ldso/csky/dl-syscalls.h b/ldso/ldso/csky/dl-syscalls.h new file mode 100644 index 0000000..f40c4fd --- /dev/null +++ b/ldso/ldso/csky/dl-syscalls.h @@ -0,0 +1 @@ +/* stub for arch-specific syscall issues */ diff --git a/ldso/ldso/csky/dl-sysdep.h b/ldso/ldso/csky/dl-sysdep.h new file mode 100644 index 0000000..c78dd81 --- /dev/null +++ b/ldso/ldso/csky/dl-sysdep.h @@ -0,0 +1,89 @@ +/* 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) \ +do { \ + GOT_BASE[2] = (unsigned long) _dl_linux_resolve; \ + GOT_BASE[1] = (unsigned long) MODULE; \ +} while(0) + +/* Here we define the magic numbers that this dynamic loader should accept */ +#define MAGIC1 EM_MCORE +#undef MAGIC2 + +/* Used for error messages */ +#define ELF_TARGET "csky" + +struct elf_resolve; +extern unsigned long _dl_linux_resolver(struct elf_resolve * tpnt, int reloc_entry); + +/* 65536 bytes alignment */ +#define PAGE_ALIGN 0xfffff000 /* need modify */ +#define ADDR_ALIGN 0xfff +#define OFFS_ALIGN 0x7ffff000 + +/* ELF_RTYPE_CLASS_PLT iff TYPE describes relocation of a PLT entry or + TLS variable, so undefined references 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_CKCORE_JUMP_SLOT || (type) == R_CKCORE_TLS_DTPMOD32 \ + || (type) == R_CKCORE_TLS_DTPOFF32 || (type) == R_CKCORE_TLS_TPOFF32) \ + * ELF_RTYPE_CLASS_PLT) \ + | (((type) == R_CKCORE_COPY) * ELF_RTYPE_CLASS_COPY)) + +/* Return the link-time address of _DYNAMIC. Conveniently, this is the + first element of the GOT. This must be inlined in a function which + uses global data. */ +static __inline__ Elf32_Addr elf_machine_dynamic (void) attribute_unused; +static __inline__ Elf32_Addr +elf_machine_dynamic (void) +{ + register Elf32_Addr *got __asm__ ("gb"); /* need modify */ + return *got; +} + +/* this funtion will be called only when the auxvt[AT_BASE].a_un.a_val == 0 + so it normal not be called, we should define a default address of the interprrter load */ +static __inline__ Elf32_Addr elf_machine_load_address (void) attribute_unused; +static __inline__ Elf32_Addr +elf_machine_load_address (void) +{ +#ifdef __CSKYABIV2__ + extern Elf32_Addr internal_function __dl_start (void *) __asm__ ("_dl_start"); + Elf32_Addr got_addr = (Elf32_Addr) &__dl_start; + Elf32_Addr pcrel_addr; + __asm__ ("grs %0,_dl_start\n" : "=r" (pcrel_addr)); +#else + extern Elf32_Addr internal_function __start_flag (void *) __asm__ ("start_flag"); + Elf32_Addr got_addr = (Elf32_Addr) &__start_flag; + Elf32_Addr pcrel_addr; + __asm__ ("subi sp,8\n" \ + "stw lr,(sp,0)\n" \ + "bsr start_flag\n" \ + "start_flag:" \ + "mov %0, lr\n" \ + "ldw lr,(sp,0)\n" \ + "addi sp,8\n" \ + : "=r" (pcrel_addr)); +#endif + return pcrel_addr - got_addr; + +} + +/* some relocation information are machine special */ +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 *reloc_addr = (void *) (load_off + (++rpnt)->r_offset); + *reloc_addr = load_off + rpnt->r_addend; + } while (--relative_count); /* maybe need modify */ +} + diff --git a/ldso/ldso/csky/elfinterp.c b/ldso/ldso/csky/elfinterp.c new file mode 100644 index 0000000..1469c28 --- /dev/null +++ b/ldso/ldso/csky/elfinterp.c @@ -0,0 +1,297 @@ +#include "ldso.h" + +unsigned long +_dl_linux_resolver(struct elf_resolve *tpnt, int reloc_entry) +{ + ELF_RELOC *this_reloc; + int symtab_index; + //char *rel_tab; + Elf32_Sym *sym_tab; + char *str_tab; + char *sym_name; + char *sym_addr; + char **reloc_addr; + + this_reloc = (ELF_RELOC *)tpnt->dynamic_info[DT_JMPREL]; + this_reloc += reloc_entry; + //this_reloc = (ELF_RELOC *)(intptr_t)(rel_tab + reloc_entry); + symtab_index = ELF32_R_SYM(this_reloc->r_info); + + sym_tab = (Elf32_Sym *)(intptr_t)tpnt->dynamic_info[DT_SYMTAB]; + str_tab = (char *)tpnt->dynamic_info[DT_STRTAB]; + sym_name = str_tab + sym_tab[symtab_index].st_name; + + reloc_addr = (char **)((unsigned long)this_reloc->r_offset + + (unsigned long)tpnt->loadaddr); + + sym_addr = _dl_find_hash(sym_name, &_dl_loaded_modules->symbol_scope, tpnt, ELF_RTYPE_CLASS_PLT, NULL); + + if (unlikely(!sym_addr)) { + _dl_dprintf(2, "%s: 1can't resolve symbol '%s' in lib '%s'.\n", _dl_progname, sym_name, tpnt->libname); + _dl_exit(1); + } + + *reloc_addr = sym_addr; + + return (unsigned long)sym_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, Elf32_Sym *symtab, char *strtab)) +{ + unsigned int i; + char *strtab; + Elf32_Sym *symtab; + ELF_RELOC *rpnt; + int symtab_index; + + /* Parse the relocation information. */ + rpnt = (ELF_RELOC *)(intptr_t)rel_addr; + rel_size /= sizeof(ELF_RELOC); + symtab = (Elf32_Sym *)(intptr_t)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, "2can't handle reloc type '%s' in lib '%s'\n", + _dl_reltypes(reloc_type), tpnt->libname); +#else + _dl_dprintf(2, "3can't handle reloc type %x in lib '%s'\n", + reloc_type, tpnt->libname); +#endif + return res; + } else if (unlikely(res > 0)) { + _dl_dprintf(2, "4can't resolve symbol in lib '%s'.\n", tpnt->libname); + return res; + } + } + + return 0; +} + +static int +_dl_do_reloc(struct elf_resolve *tpnt, struct r_scope_elem *scope, + ELF_RELOC *rpnt, Elf32_Sym *symtab, char *strtab) +{ + int reloc_type; + int symtab_index; + char *symname; + unsigned long *reloc_addr; + unsigned long symbol_addr; + struct symbol_ref sym_ref; +#if defined (__SUPPORT_LD_DEBUG__) + unsigned long old_val; +#endif +#if defined USE_TLS && USE_TLS + struct elf_resolve *tls_tpnt = NULL; +#endif +#if defined(__CSKYABIV2__) + unsigned int insn_opcode = 0x0; + unsigned short *opcode16_addr; +#endif + + reloc_addr = (unsigned long *)(intptr_t)(tpnt->loadaddr + (unsigned long)rpnt->r_offset); +#if defined(__CSKYABIV2__) + opcode16_addr = (unsigned short *)reloc_addr; +#endif + reloc_type = ELF32_R_TYPE(rpnt->r_info); + + if (reloc_type == R_CKCORE_NONE) + return 0; + + symtab_index = ELF32_R_SYM(rpnt->r_info); + symbol_addr = 0; + sym_ref.sym = &symtab[symtab_index]; + sym_ref.tpnt = NULL; + symname = strtab + symtab[symtab_index].st_name; + if (symtab_index) { + 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 (unlikely(!symbol_addr && ELF32_ST_BIND(symtab[symtab_index].st_info) != STB_WEAK)) + if (!symbol_addr && (ELF_ST_TYPE(symtab[symtab_index].st_info) != STT_TLS) + && (ELF_ST_BIND(symtab[symtab_index].st_info) != STB_WEAK)) + return 1; +#if defined USE_TLS && USE_TLS + tls_tpnt = sym_ref.tpnt; +#endif + }else{ + /* + * Relocs against STN_UNDEF are usually treated as using a + * symbol value of zero, and using the module containing the + * reloc itself. + */ + symbol_addr = symtab[symtab_index].st_name; +#if defined USE_TLS && USE_TLS + tls_tpnt = tpnt; +#endif + } +#if defined (__SUPPORT_LD_DEBUG__) + old_val = *reloc_addr; +#endif + + switch (reloc_type) { /* need modify */ + case R_CKCORE_NONE: + case R_CKCORE_PCRELJSR_IMM11BY2: + break; + case R_CKCORE_ADDR32: + *reloc_addr = symbol_addr + rpnt->r_addend; + break; + case R_CKCORE_GLOB_DAT: + case R_CKCORE_JUMP_SLOT: + *reloc_addr = symbol_addr; + break; + case R_CKCORE_RELATIVE: + *reloc_addr = (unsigned long)tpnt->loadaddr + rpnt->r_addend; + break; +#if defined(__CSKYABIV2__) + case R_CKCORE_ADDR_HI16: + insn_opcode = (*opcode16_addr << 16) | (*(opcode16_addr + 1)); + insn_opcode = (insn_opcode & 0xffff0000) + | (((symbol_addr + rpnt->r_addend) >> 16) & 0xffff); + *(opcode16_addr++) = (unsigned short)(insn_opcode >> 16); + *opcode16_addr = (unsigned short)(insn_opcode & 0xffff); + break; + case R_CKCORE_ADDR_LO16: + insn_opcode = (*opcode16_addr << 16) | (*(opcode16_addr + 1)); + insn_opcode = (insn_opcode & 0xffff0000) + | ((symbol_addr + rpnt->r_addend) & 0xffff); + *(opcode16_addr++) = (unsigned short)(insn_opcode >> 16); + *opcode16_addr = (unsigned short)(insn_opcode & 0xffff); + break; + case R_CKCORE_PCREL_IMM26BY2: + { + unsigned int offset = ((symbol_addr + rpnt->r_addend - + (unsigned int)reloc_addr) >> 1); + insn_opcode = (*opcode16_addr << 16) | (*(opcode16_addr + 1)); + if (offset > 0x3ffffff){ + _dl_dprintf(2, "%s:The reloc R_CKCORE_PCREL_IMM26BY2 cannot reach the symbol '%s'.\n", _dl_progname, symname); + _dl_exit(1); + } + insn_opcode = (insn_opcode & ~0x3ffffff) | offset; + *(opcode16_addr++) = (unsigned short)(insn_opcode >> 16); + *opcode16_addr = (unsigned short)(insn_opcode & 0xffff); + break; + } + case R_CKCORE_PCREL_JSR_IMM26BY2: + break; +#endif + case R_CKCORE_COPY: + if (symbol_addr) { +#if defined (__SUPPORT_LD_DEBUG__) + if (_dl_debug_move) + _dl_dprintf(_dl_debug_file, + "\n%s move %d bytes from %x to %x", + symname, symtab[symtab_index].st_size, + symbol_addr, reloc_addr); +#endif + + _dl_memcpy((char *)reloc_addr, + (char *)symbol_addr, + symtab[symtab_index].st_size); + } + break; +#if defined USE_TLS && USE_TLS + case R_CKCORE_TLS_DTPMOD32: + *reloc_addr = tls_tpnt->l_tls_modid; + break; + case R_CKCORE_TLS_DTPOFF32: + *reloc_addr += symbol_addr; + break; + case R_CKCORE_TLS_TPOFF32: + CHECK_STATIC_TLS ((struct link_map *) tls_tpnt); + *reloc_addr += tls_tpnt->l_tls_offset + symbol_addr; + break; +#endif + default: + return -1; + } + +#if defined (__SUPPORT_LD_DEBUG__) + if (_dl_debug_reloc && _dl_debug_detail) + _dl_dprintf(_dl_debug_file, "\n\tpatched: %x ==> %x @ %x", + old_val, *reloc_addr, reloc_addr); +#endif + + return 0; +} + +static int +_dl_do_lazy_reloc(struct elf_resolve *tpnt, struct r_scope_elem *scope, + ELF_RELOC *rpnt, Elf32_Sym *symtab, char *strtab) +{ + int reloc_type; + unsigned long *reloc_addr; +#if defined (__SUPPORT_LD_DEBUG__) + unsigned long old_val; +#endif + + reloc_addr = (unsigned long *)(intptr_t)(tpnt->loadaddr + (unsigned long)rpnt->r_offset); + reloc_type = ELF32_R_TYPE(rpnt->r_info); + +#if defined (__SUPPORT_LD_DEBUG__) + old_val = *reloc_addr; +#endif + + switch (reloc_type) { + case R_CKCORE_NONE: + case R_CKCORE_PCRELJSR_IMM11BY2: + break; + case R_CKCORE_JUMP_SLOT: + *reloc_addr = (unsigned long)tpnt->loadaddr + rpnt->r_addend; + break; + default: + return -1; + } + +#if defined (__SUPPORT_LD_DEBUG__) + if (_dl_debug_reloc && _dl_debug_detail) + _dl_dprintf(_dl_debug_file, "\n\tpatched: %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) +{ + (void)_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/csky/read_tp.S b/ldso/ldso/csky/read_tp.S new file mode 100644 index 0000000..ef8d509 --- /dev/null +++ b/ldso/ldso/csky/read_tp.S @@ -0,0 +1,17 @@ +#include <sysdep.h> + +#ifndef NOT_IN_libc +.global __read_tp +#else +.hidden __read_tp +#endif + +ENTRY (__read_tp) +#ifdef __CSKYABIV2__ + mov a0, tls +#else + trap 3 +#endif + rts +END (__read_tp) + diff --git a/ldso/ldso/csky/resolve.S b/ldso/ldso/csky/resolve.S new file mode 100644 index 0000000..46a4363 --- /dev/null +++ b/ldso/ldso/csky/resolve.S @@ -0,0 +1,72 @@ +/* + * This function is not called directly. It is jumped when attempting to use a + * symbol that has not yet been resolved. + * + *.plt*: + * subi r0, 32 + * stw r2, (r0, 0) + * stw r3, (r0, 4) + * lrw r3, #offset + * ldw r2, (gb, 8) + * jmp r2 + */ + +.import _dl_linux_resolver + +.text +.globl _dl_linux_resolve +.type _dl_linux_resolve,@function + +_dl_linux_resolve: +#ifdef __CSKYABIV1__ + stw r4, (r0, 8) + stw r5, (r0, 12) + stw r6, (r0, 16) + stw r7, (r0, 20) + stw r15,(r0, 24) + # load the ID of this module + ldw r2, (gb, 4) + # r2 = id, r3 = offset(do it in plt*) +#ifdef __PIC__ + # get global offset table address_ + bsr .L2 +.L2: + lrw r7, .L2@GOTPC + add r7, r15 + # get the address of function (_dl_linux_resolver) in got table + lrw r6, _dl_linux_resolver@GOT + add r6, r7 + ldw r5, (r6, 0) + jsr r5 +#else /* no __PIC__ */ + jsri _dl_linux_resolver /* need modify */ +#endif + # Return from _dl_linux_resolver, the address of function is in r2 + mov r1, r2 + # Restore the registers + ldw r2, (r0, 0) + ldw r3, (r0, 4) + ldw r4, (r0, 8) + ldw r5, (r0, 12) + ldw r6, (r0, 16) + ldw r7, (r0, 20) + ldw r15,(r0, 24) + # Restore the r0, because r0 is subtracted in PLT table + addi r0, 32 + # The address of function is in r1, call the function without saving pc + jmp r1 +#else /* __CSKYABIV1__ */ + subi sp, 20 + stm a0-a3, (sp) + stw lr, (sp, 16) + # a0 = id, a1 = offset(do it in plt*) + ldw a0, (gb, 4) + mov a1, t1 + bsr _dl_linux_resolver + mov t0, a0 + ldw lr, (sp, 16) + ldm a0-a3, (sp) + addi sp, 20 + jmp t0 + +#endif diff --git a/libc/string/csky/Makefile b/libc/string/csky/Makefile new file mode 100644 index 0000000..ce5add6 --- /dev/null +++ b/libc/string/csky/Makefile @@ -0,0 +1,6 @@ +top_srcdir:=../../../ +top_builddir:=../../../ +all: objs +include $(top_builddir)Rules.mak +include ../Makefile.in +include $(top_srcdir)Makerules diff --git a/libc/string/csky/cskyv1/memcpy.S b/libc/string/csky/cskyv1/memcpy.S new file mode 100644 index 0000000..dfa7f64 --- /dev/null +++ b/libc/string/csky/cskyv1/memcpy.S @@ -0,0 +1,211 @@ +.macro GET_FRONT_BITS rx ry +#ifdef __cskyLE__ + lsr \rx, \ry +#else + lsl \rx, \ry +#endif +.endm + +.macro GET_AFTER_BITS rx ry +#ifdef __cskyLE__ + lsl \rx, \ry +#else + lsr \rx, \ry +#endif +.endm + + +#ifdef WANT_WIDE +# define Wmemcpy wmemcpy +#else +# define Wmemcpy memcpy +#endif + +/* void *memcpy(void *dest, const void *src, size_t n); */ + + .text + .align 2 + .global Wmemcpy + .type Wmemcpy, @function +Wmemcpy: + mov r7, r2 + cmplti r4, 4 /* If len less than 4 bytes */ + jbt .L_copy_by_byte + + mov r6, r2 + andi r6, 3 + cmpnei r6, 0 + jbt .L_dest_not_aligned /* If dest is not 4 bytes aligned */ +.L0: + mov r6, r3 + andi r6, 3 + cmpnei r6, 0 + jbt .L_dest_aligned_but_src_not_aligned /* If dest is aligned, but src is not aligned */ + + cmplti r4, 16 /* dest and src are all aligned */ + jbt .L_aligned_and_len_less_16bytes /* If len less than 16 bytes */ + + subi sp, 8 + stw r8, (sp, 0) + stw r9, (sp, 4) +.L_aligned_and_len_larger_16bytes: /* src and dst are all aligned, and len > 16 bytes */ + ldw r1, (r3, 0) + ldw r5, (r3, 4) + ldw r8, (r3, 8) + ldw r9, (r3, 12) + stw r1, (r7, 0) + stw r5, (r7, 4) + stw r8, (r7, 8) + stw r9, (r7, 12) + subi r4, 16 + addi r3, 16 + addi r7, 16 + cmplti r4, 16 + jbf .L_aligned_and_len_larger_16bytes + ldw r8, (sp, 0) + ldw r9, (sp, 4) + addi sp, 8 + +.L_aligned_and_len_less_16bytes: + cmplti r4, 4 + jbt .L_copy_by_byte + ldw r1, (r3, 0) + stw r1, (r7, 0) + subi r4, 4 + addi r3, 4 + addi r7, 4 + jbr .L_aligned_and_len_less_16bytes + +.L_copy_by_byte: /* len less than 4 bytes */ + cmpnei r4, 0 + jbf .L_return + ldb r1, (r3, 0) + stb r1, (r7, 0) + subi r4, 1 + addi r3, 1 + addi r7, 1 + jbr .L_copy_by_byte + +.L_return: + rts + +/* If dest is not aligned, we copy some bytes to make dest align. + Then we should judge whether src is aligned. */ + +.L_dest_not_aligned: + mov r5, r3 /* consider overlapped case */ + rsub r5, r5, r7 + abs r5, r5 + cmplt r5, r4 + jbt .L_copy_by_byte + +.L1: + ldb r1, (r3, 0) /* makes the dest align. */ + stb r1, (r7, 0) + addi r6, 1 + subi r4, 1 + addi r3, 1 + addi r7, 1 + cmpnei r6, 4 + jbt .L1 + cmplti r4, 4 + jbt .L_copy_by_byte + jbf .L0 /* judge whether the src is aligned. */ + +.L_dest_aligned_but_src_not_aligned: + mov r5, r3 /* consider overlapped case*/ + rsub r5, r5, r7 + abs r5, r5 + cmplt r5, r4 + jbt .L_copy_by_byte + + bclri r3, 0 + bclri r3, 1 + ldw r1, (r3, 0) + addi r3, 4 + + subi sp, 16 + stw r11, (sp,0) + stw r12, (sp,4) + stw r13, (sp,8) + movi r5, 8 + mult r5, r6 /* r6 is used to store tne misaligned bits */ + mov r12, r5 + rsubi r5, 31 + addi r5, 1 + mov r13, r5 + + cmplti r4, 16 + jbt .L_not_aligned_and_len_less_16bytes + + stw r8, (sp, 12) + subi sp, 8 + stw r9, (sp, 0) + stw r10, (sp, 4) +.L_not_aligned_and_len_larger_16bytes: + ldw r5, (r3, 0) + ldw r11, (r3, 4) + ldw r8, (r3, 8) + ldw r9, (r3, 12) + + GET_FRONT_BITS r1 r12 /* little or big endian? */ + mov r10, r5 + GET_AFTER_BITS r5 r13 + or r5, r1 + + GET_FRONT_BITS r10 r12 + mov r1, r11 + GET_AFTER_BITS r11 r13 + or r11, r10 + + GET_FRONT_BITS r1 r12 + mov r10, r8 + GET_AFTER_BITS r8 r13 + or r8, r1 + + GET_FRONT_BITS r10 r12 + mov r1, r9 + GET_AFTER_BITS r9 r13 + or r9, r10 + + stw r5, (r7, 0) + stw r11, (r7, 4) + stw r8, (r7, 8) + stw r9, (r7, 12) + subi r4, 16 + addi r3, 16 + addi r7, 16 + cmplti r4, 16 + jbf .L_not_aligned_and_len_larger_16bytes + ldw r9, (sp, 0) + ldw r10, (sp, 4) + addi sp, 8 + ldw r8, (sp,12) + +.L_not_aligned_and_len_less_16bytes: + cmplti r4, 4 + jbf .L2 + rsubi r6, 4 /* r6 is used to stored the misaligned bits */ + subu r3, r6 /* initial the position */ + ldw r11, (sp, 0) + ldw r12, (sp, 4) + ldw r13, (sp, 8) + addi sp, 16 + jbr .L_copy_by_byte +.L2: + ldw r5, (r3, 0) + GET_FRONT_BITS r1 r12 + mov r11, r1 + mov r1, r5 + GET_AFTER_BITS r5 r13 + or r5, r11 + stw r5, (r7, 0) + subi r4, 4 + addi r3, 4 + addi r7, 4 + jbr .L_not_aligned_and_len_less_16bytes + +.size Wmemcpy, .-Wmemcpy + +libc_hidden_def(Wmemcpy) +.weak Wmemcpy diff --git a/libc/string/csky/cskyv1/strcmp.S b/libc/string/csky/cskyv1/strcmp.S new file mode 100644 index 0000000..e22f29e --- /dev/null +++ b/libc/string/csky/cskyv1/strcmp.S @@ -0,0 +1,185 @@ +#include <features.h> +#include <endian.h> + +#ifdef WANT_WIDE +# define Wstrcmp wcscmp +# define Wstrcoll wcscoll +#else +# define Wstrcmp strcmp +# define Wstrcoll strcoll +#endif + +/* FIXME attention!!! it may be a bug when WANT_WIDE define */ +/*libc_hidden_proto(Wstrcmp)*/ + .align 2 + .global Wstrcmp + .type Wstrcmp, @function +Wstrcmp: + mov r6, r2 + + or r2, r3 + andi r2, 0x3 + cmpnei r2, 0x0 /* d or s is aligned ?*/ + bt 4f /* if not aligned, goto 4f*/ + 1: /* if aligned, load word each time.*/ + ldw r2, (r6, 0) + ldw r7, (r3, 0) + cmpne r2, r7 + bt 1f /* if d[i] != s[i], goto 1f */ + tstnbz r2 /* if d[i] == s[i], check if d or s is at the end. */ + bf 3f /* if at the end, goto 3f (finish comparing) */ + + ldw r2, (r6, 4) + ldw r7, (r3, 4) + cmpne r2, r7 + bt 1f + tstnbz r2 + bf 3f + + ldw r2, (r6, 8) + ldw r7, (r3, 8) + cmpne r2, r7 + bt 1f + tstnbz r2 + bf 3f + + ldw r2, (r6, 12) + ldw r7, (r3, 12) + cmpne r2, r7 + bt 1f + tstnbz r2 + bf 3f + + ldw r2, (r6, 16) + ldw r7, (r3, 16) + cmpne r2, r7 + bt 1f + tstnbz r2 + bf 3f + + ldw r2, (r6, 20) + ldw r7, (r3, 20) + cmpne r2, r7 + bt 1f + tstnbz r2 + bf 3f + + ldw r2, (r6, 24) + ldw r7, (r3, 24) + cmpne r2, r7 + bt 1f + tstnbz r2 + bf 3f + + ldw r2, (r6, 28) + ldw r7, (r3, 28) + cmpne r2, r7 + bt 1f + tstnbz r2 + bf 3f + + addi r6, 32 + addi r3, 32 + br 1b + +#ifdef __CSKYBE__ + /* d[i] != s[i] in word, so we check byte 0 ? */ + 1: + xtrb0 r1, r2 + mov r4, r1 + xtrb0 r1, r7 + cmpne r4, r1 + bt 2f + cmpnei r4, 0 + bf 2f + + /* d[i] != s[i] in word, so we check byte 1 ? */ + xtrb1 r1, r2 + mov r4, r1 + xtrb1 r1, r7 + cmpne r4, r1 + bt 2f + cmpnei r4, 0 + bf 2f + + /* d[i] != s[i] in word, so we check byte 1 ? */ + xtrb2 r1, r2 + mov r4, r1 + xtrb2 r1, r7 + cmpne r4, r1 + bt 2f + cmpnei r4, 0 + bf 2f + + /* d[i] != s[i] in word, so we check byte 1 ? */ + xtrb3 r1, r2 + mov r4, r1 + xtrb3 r1, r7 + +#else /* little endian */ + /* d[i] != s[i] in word, so we check byte 0 ? */ +1: + xtrb3 r1, r2 + mov r4, r1 + xtrb3 r1, r7 + cmpne r4, r1 + bt 2f + cmpnei r4, 0 + bf 2f + + /* d[i] != s[i] in word, so we check byte 1 ? */ + xtrb2 r1, r2 + mov r4, r1 + xtrb2 r1, r7 + cmpne r4, r1 + bt 2f + cmpnei r4, 0 + bf 2f + + /* d[i] != s[i] in word, so we check byte 1 ? */ + xtrb1 r1, r2 + mov r4, r1 + xtrb1 r1, r7 + cmpne r4, r1 + bt 2f + cmpnei r4, 0 + bf 2f + + /* d[i] != s[i] in word, so we check byte 1 ? */ + xtrb0 r1, r2 + mov r4, r1 + xtrb0 r1, r7 + +#endif + /* get the result when d[i] != s[i] */ +2: + subu r4, r1 + mov r2, r4 + jmp r15 + + /* return when d[i] == s[i] */ +3: + subu r2, r7 + jmp r15 + + /* cmp when d or s is not aligned */ +4: + ldb r2, (r6,0) + ldb r7, (r3, 0) + cmpne r2, r7 + bt 3b + addi r3, 1 + addi r6, 1 + cmpnei r2, 0 + bt 4b + jmp r15 + + .size Wstrcmp, .-Wstrcmp + +libc_hidden_def(Wstrcmp) +.weak Wstrcmp +#ifndef __UCLIBC_HAS_LOCALE__ +/* libc_hidden_proto(Wstrcoll) */ +strong_alias(Wstrcmp,Wstrcoll) +libc_hidden_def(Wstrcoll) +#endif diff --git a/libc/string/csky/cskyv1/strcpy.S b/libc/string/csky/cskyv1/strcpy.S new file mode 100644 index 0000000..c2f1e7a --- /dev/null +++ b/libc/string/csky/cskyv1/strcpy.S @@ -0,0 +1,139 @@ +#include <features.h> +#include <endian.h> + +#ifdef WANT_WIDE +# define Wstrcpy wcscpy +#else +# define Wstrcpy strcpy +#endif + + .align 2 + .global Wstrcpy + .type Wstrcpy, @function +Wstrcpy: + + mov r6, r2 + mov r7, r3 + or r7, r6 + andi r7, 3 + cmpnei r7, 0 + bf 2f + 1: + ldb r5, (r3) + stb r5, (r6) + addi r3, 1 + addi r6, 1 + cmpnei r5, 0 + bt 1b + 1: + jmp r15 + + 2: + ldw r5, (r3) + tstnbz r5 + bf 10f + stw r5, (r6) + + ldw r5, (r3, 4) + tstnbz r5 + bf 3f + stw r5, (r6, 4) + + ldw r5, (r3, 8) + tstnbz r5 + bf 4f + stw r5, (r6, 8) + + ldw r5, (r3, 12) + tstnbz r5 + bf 5f + stw r5, (r6, 12) + + ldw r5, (r3, 16) + tstnbz r5 + bf 6f + stw r5, (r6, 16) + + ldw r5, (r3, 20) + tstnbz r5 + bf 7f + stw r5, (r6, 20) + + ldw r5, (r3, 24) + tstnbz r5 + bf 8f + stw r5, (r6, 24) + + ldw r5, (r3, 28) + tstnbz r5 + bf 9f + stw r5, (r6, 28) + + addi r6, 32 + addi r3, 32 + br 2b + + 3: + addi r6, 4 + br 10f + + 4: + addi r6, 8 + br 10f + + 5: + addi r6, 12 + br 10f + + 6: + addi r6, 16 + br 10f + + 7: + addi r6, 20 + br 10f + + 8: + addi r6, 24 + br 10f + + 9: + addi r6, 28 + + 10: +#ifdef __CSKYBE__ + xtrb0 r1, r5 + stb r1, (r6) + cmpnei r1, 0 + bf 5f + xtrb1 r1, r5 + stb r1, (r6, 1) + cmpnei r1, 0 + bf 5f + xtrb2 r1, r5 + stb r1, (r6, 2 ) + cmpnei r1, 0 + bf 5f + stw r5, (r6) + +#else + xtrb3 r1, r5 + stb r1, (r6) + cmpnei r1, 0 + bf 5f + xtrb2 r1, r5 + stb r1, (r6, 1) + cmpnei r1, 0 + bf 5f + xtrb1 r1, r5 + stb r1, (r6, 2) + cmpnei r1, 0 + bf 5f + stw r5, (r6) +#endif + 5: + jmp r15 + + +libc_hidden_def(Wstrcpy) +.weak Wstrcpy diff --git a/libc/string/csky/cskyv2/abiv2_memcpy.S b/libc/string/csky/cskyv2/abiv2_memcpy.S new file mode 100644 index 0000000..c112ec0 --- /dev/null +++ b/libc/string/csky/cskyv2/abiv2_memcpy.S @@ -0,0 +1,184 @@ +.macro GET_FRONT_BITS rx ry +#ifdef __cskyLE__ + lsr \rx, \ry +#else + lsl \rx, \ry +#endif +.endm + +.macro GET_AFTER_BITS rx ry +#ifdef __cskyLE__ + lsl \rx, \ry +#else + lsr \rx, \ry +#endif +.endm + + +#ifdef WANT_WIDE +# define Wmemcpy wmemcpy +#else +# define Wmemcpy memcpy +#endif + +/* void *memcpy(void *dest, const void *src, size_t n); */ + + .text + .align 2 + .global Wmemcpy + .type Wmemcpy, @function +Wmemcpy: + mov r3, r0 + cmplti r2, 4 /* If len less than 4 bytes */ + jbt .L_copy_by_byte + + mov r12, r0 + andi r12, 3 + bnez r12, .L_dest_not_aligned /* If dest is not 4 bytes aligned */ +.L0: + mov r12, r1 + andi r12, 3 + bnez r12, .L_dest_aligned_but_src_not_aligned /* If dest is aligned, but src is not aligned */ + + cmplti r2, 16 /* dest and src are all aligned */ + jbt .L_aligned_and_len_less_16bytes /* If len less than 16 bytes */ + +.L_aligned_and_len_larger_16bytes: /* src and dst are all aligned, and len > 16 bytes */ + ldw r18, (r1, 0) + ldw r19, (r1, 4) + ldw r20, (r1, 8) + ldw r21, (r1, 12) + stw r18, (r3, 0) + stw r19, (r3, 4) + stw r20, (r3, 8) + stw r21, (r3, 12) + subi r2, 16 + addi r1, 16 + addi r3, 16 + cmplti r2, 16 + jbf .L_aligned_and_len_larger_16bytes + +.L_aligned_and_len_less_16bytes: + cmplti r2, 4 + jbt .L_copy_by_byte + ldw r18, (r1, 0) + stw r18, (r3, 0) + subi r2, 4 + addi r1, 4 + addi r3, 4 + jbr .L_aligned_and_len_less_16bytes + +.L_copy_by_byte: /* len less than 4 bytes */ + cmpnei r2, 0 + jbf .L_return + ldb r18, (r1, 0) + stb r18, (r3, 0) + subi r2, 1 + addi r1, 1 + addi r3, 1 + jbr .L_copy_by_byte + +.L_return: + rts + +/* If dest is not aligned, just copying some bytes makes the dest align. + After that, we judge whether the src is aligned. */ + +.L_dest_not_aligned: + rsub r13, r1, r3 /* consider overlapped case */ + abs r13, r13 + cmplt r13, r2 + jbt .L_copy_by_byte + +.L1: + ldb r18, (r1, 0) /* makes the dest align. */ + stb r18, (r3, 0) + addi r12, 1 + subi r2, 1 + addi r1, 1 + addi r3, 1 + cmpnei r12, 4 + jbt .L1 + cmplti r2, 4 + jbt .L_copy_by_byte + jbf .L0 /* judge whether the src is aligned. */ + +.L_dest_aligned_but_src_not_aligned: + rsub r13, r1, r3 /* consider overlapped case */ + abs r13, r13 + cmplt r13, r2 + jbt .L_copy_by_byte + + bclri r1, 0 + bclri r1, 1 + ldw r18, (r1, 0) + addi r1, 4 + + movi r13, 8 + mult r13, r12 + mov r24, r13 /* r12 is used to store the misaligned bits */ + rsubi r13, 32 + mov r25, r13 + + cmplti r2, 16 + jbt .L_not_aligned_and_len_less_16bytes + +.L_not_aligned_and_len_larger_16bytes: + ldw r20, (r1, 0) + ldw r21, (r1, 4) + ldw r22, (r1, 8) + ldw r23, (r1, 12) + + GET_FRONT_BITS r18 r24 /* little or big endian? */ + mov r19, r20 + GET_AFTER_BITS r20 r25 + or r20, r18 + + GET_FRONT_BITS r19 r24 + mov r18, r21 + GET_AFTER_BITS r21 r13 + or r21, r19 + + GET_FRONT_BITS r18 r24 + mov r19, r22 + GET_AFTER_BITS r22 r25 + or r22, r18 + + GET_FRONT_BITS r19 r24 + mov r18, r23 + GET_AFTER_BITS r23 r25 + or r23, r19 + + stw r20, (r3, 0) + stw r21, (r3, 4) + stw r22, (r3, 8) + stw r23, (r3, 12) + subi r2, 16 + addi r1, 16 + addi r3, 16 + cmplti r2, 16 + jbf .L_not_aligned_and_len_larger_16bytes + +.L_not_aligned_and_len_less_16bytes: + cmplti r2, 4 + jbf .L2 + rsubi r12, 4 /* r12 is used to stored the misaligned bits */ + subu r1, r12 /* initial the position */ + jbr .L_copy_by_byte +.L2: + ldw r21, (r1, 0) + GET_FRONT_BITS r18 r24 + mov r19, r18 + mov r18, r21 + GET_AFTER_BITS r21 r25 + or r21, r19 + stw r21, (r3, 0) + subi r2, 4 + addi r1, 4 + addi r3, 4 + jbr .L_not_aligned_and_len_less_16bytes + +.size Wmemcpy, .-Wmemcpy + +libc_hidden_def(Wmemcpy) +.weak Wmemcpy diff --git a/libc/string/csky/cskyv2/abiv2_strcmp.S b/libc/string/csky/cskyv2/abiv2_strcmp.S new file mode 100644 index 0000000..202da7c --- /dev/null +++ b/libc/string/csky/cskyv2/abiv2_strcmp.S @@ -0,0 +1,168 @@ +#include <endian.h> +#include "macro.S" + +#ifdef WANT_WIDE +# define Wstrcmp wcscmp +# define Wstrcoll wcscoll +#else +# define Wstrcmp strcmp +# define Wstrcoll strcoll +#endif + +/* FIXME attention!!! it may be a bug when WANT_WIDE define */ +/*libc_hidden_proto(Wstrcmp)*/ + .align 2 + .global Wstrcmp + .type Wstrcmp, @function +Wstrcmp: + mov a3, a0 + + or a0, a1 + andi a0, 0x3 + M_BNEZ a0, 4f + 1: // if aligned, load word each time. + + ldw a0, (a3, 0) + ldw t0, (a1, 0) + M_BNE a0, t0, 1f // if d[i] != s[i], goto 1f + tstnbz a0 // if d[i] == s[i], check if d or s is at the end. + bf 3f // if at the end, goto 3f (finish comparing) + ldw a0, (a3, 4) + ldw t0, (a1, 4) + M_BNE a0, t0, 1f + tstnbz a0 + bf 3f + + ldw a0, (a3, 8) + ldw t0, (a1, 8) + M_BNE a0, t0, 1f + tstnbz a0 + bf 3f + + ldw a0, (a3, 12) + ldw t0, (a1, 12) + M_BNE a0, t0, 1f + tstnbz a0 + bf 3f + + ldw a0, (a3, 16) + ldw t0, (a1, 16) + M_BNE a0, t0, 1f + tstnbz a0 + bf 3f + + ldw a0, (a3, 20) + ldw t0, (a1, 20) + M_BNE a0, t0, 1f + tstnbz a0 + bf 3f + + ldw a0, (a3, 24) + ldw t0, (a1, 24) + M_BNE a0, t0, 1f + tstnbz a0 + bf 3f + + ldw a0, (a3, 28) + ldw t0, (a1, 28) + M_BNE a0, t0, 1f + tstnbz a0 + bf 3f + + addi a3, 32 + addi a1, 32 + br 1b + +#ifdef __CSKYBE__ + /* d[i] != s[i] in word, so we check byte 0 ? */ + 1: + xtrb0 t1, a0 + mov a2, t1 + xtrb0 t1, t0 + M_BNE a2, t1, 2f + cmpnei a2, 0 + bf 2f + + /* d[i] != s[i] in word, so we check byte 1 ? */ + xtrb1 t1, a0 + mov a2, t1 + xtrb1 t1, t0 + M_BNE a2, t1, 2f + cmpnei a2, 0 + bf 2f + + /* d[i] != s[i] in word, so we check byte 1 ? */ + xtrb2 t1, a0 + mov a2, t1 + xtrb2 t1, t0 + M_BNE a2, t1, 2f + cmpnei a2, 0 + bf 2f + + /* d[i] != s[i] in word, so we check byte 1 ? */ + xtrb3 t1, a0 + mov a2, t1 + xtrb3 t1, t0 + +#else /* little endian */ + /* d[i] != s[i] in word, so we check byte 0 ? */ + 1: + xtrb3 t1, a0 + mov a2, t1 + xtrb3 t1, t0 + M_BNE a2, t1, 2f + cmpnei a2, 0 + bf 2f + + /* d[i] != s[i] in word, so we check byte 1 ? */ + xtrb2 t1, a0 + mov a2, t1 + xtrb2 t1, t0 + M_BNE a2, t1, 2f + cmpnei a2, 0 + bf 2f + + /* d[i] != s[i] in word, so we check byte 1 ? */ + xtrb1 t1, a0 + mov a2, t1 + xtrb1 t1, t0 + M_BNE a2, t1, 2f + cmpnei a2, 0 + bf 2f + + /* d[i] != s[i] in word, so we check byte 1 ? */ + xtrb0 t1, a0 + mov a2, t1 + xtrb0 t1, t0 + +#endif + /* get the result when d[i] != s[i] */ + 2: + subu a2, t1 + mov a0, a2 + jmp r15 + + /* return when d[i] == s[i] */ + 3: + subu a0, t0 + jmp r15 + + /* cmp when d or s is not aligned */ + 4: + ldb a0, (a3,0) + ldb t0, (a1, 0) + M_BNE a0, t0, 3b + addi a1, 1 + addi a3, 1 + M_BNEZ a0, 4b + jmp r15 + + .size Wstrcmp, .-Wstrcmp + +libc_hidden_def(Wstrcmp) +.weak Wstrcmp +#ifndef __UCLIBC_HAS_LOCALE__ +/* libc_hidden_proto(Wstrcoll) */ +strong_alias(Wstrcmp,Wstrcoll) +libc_hidden_def(Wstrcoll) +#endif diff --git a/libc/string/csky/cskyv2/abiv2_strcpy.S b/libc/string/csky/cskyv2/abiv2_strcpy.S new file mode 100644 index 0000000..20262fe --- /dev/null +++ b/libc/string/csky/cskyv2/abiv2_strcpy.S @@ -0,0 +1,129 @@ +#include <endian.h> +#include "macro.S" + +#ifdef WANT_WIDE +# define Wstrcpy wcscpy +#else +# define Wstrcpy strcpy +#endif + + .align 2 + .global Wstrcpy + .type Wstrcpy, @function +Wstrcpy: + + mov a3, a0 + or a2, a1, a3 + andi t0, a2, 3 + M_BEZ t0, 2f + mov t0, a1 + 1: + ld.b a2, (t0) + stb a2, (a3) + addi t0, t0, 1 + addi a3, a3, 1 + M_BNEZ a2, 1b + + jmp r15 + + 2: + ldw a2, (a1) + tstnbz a2 + bf 11f + stw a2, (a3) + + ldw a2, (a1, 4) + tstnbz a2 + bf 4f + stw a2, (a3, 4) + + ldw a2, (a1, 8) + tstnbz a2 + bf 5f + stw a2, (a3, 8) + + ldw a2, (a1, 12) + tstnbz a2 + bf 6f + stw a2, (a3, 12) + + ldw a2, (a1, 16) + tstnbz a2 + bf 7f + stw a2, (a3, 16) + + ldw a2, (a1, 20) + tstnbz a2 + bf 8f + stw a2, (a3, 20) + + ldw a2, (a1, 24) + tstnbz a2 + bf 9f + stw a2, (a3, 24) + + ldw a2, (a1, 28) + tstnbz a2 + bf 10f + stw a2, (a3, 28) + + addi a3, 32 + addi a1, 32 + br 2b + + 4: + addi a3, 4 + br 11f + + 5: + addi a3, 8 + br 11f + + 6: + addi a3, 12 + br 11f + + 7: + addi a3, 16 + br 11f + + 8: + addi a3, 20 + br 11f + + 9: + addi a3, 24 + br 11f + + 10: + addi a3, 28 + 11: +#ifdef __CSKYBE__ + xtrb0 t0, a2 + st.b t0, (a3) + M_BEZ t0, 5f + xtrb1 t0, a2 + st.b t0, (a3, 1) + M_BEZ t0, 5f + xtrb2 t0, a2 + st.b t0, (a3, 2 ) + M_BEZ t0, 5f + stw a2, (a3) +#else + xtrb3 t0, a2 + st.b t0, (a3) + M_BEZ t0, 5f + xtrb2 t0, a2 + st.b t0, (a3, 1) + M_BEZ t0, 5f + xtrb1 t0, a2 + st.b t0, (a3, 2) + M_BEZ t0, 5f + stw a2, (a3) +#endif + 5: + jmp r15 + + +libc_hidden_def(Wstrcpy) +.weak Wstrcpy diff --git a/libc/string/csky/cskyv2/macro.S b/libc/string/csky/cskyv2/macro.S new file mode 100644 index 0000000..047645c --- /dev/null +++ b/libc/string/csky/cskyv2/macro.S @@ -0,0 +1,13 @@ +.macro M_BEZ rx, label + bez \rx, \label +.endm + +.macro M_BNEZ rx, label + bnez \rx, \label +.endm + +.macro M_BNE rx, ry, label + cmpne \rx, \ry + bt \label +.endm + diff --git a/libc/string/csky/memcpy.S b/libc/string/csky/memcpy.S new file mode 100644 index 0000000..51d258a --- /dev/null +++ b/libc/string/csky/memcpy.S @@ -0,0 +1,7 @@ +#include <features.h> + +#ifdef __CSKYABIV2__ +#include "cskyv2/abiv2_memcpy.S" +#else +#include "cskyv1/memcpy.S" +#endif diff --git a/libc/string/csky/strcmp.S b/libc/string/csky/strcmp.S new file mode 100644 index 0000000..05a88c9 --- /dev/null +++ b/libc/string/csky/strcmp.S @@ -0,0 +1,7 @@ +#include <features.h> + +#ifdef __CSKYABIV2__ +#include "cskyv2/abiv2_strcmp.S" +#else +#include "cskyv1/strcmp.S" +#endif diff --git a/libc/string/csky/strcpy.S b/libc/string/csky/strcpy.S new file mode 100644 index 0000000..dd3be04 --- /dev/null +++ b/libc/string/csky/strcpy.S @@ -0,0 +1,7 @@ +#include <features.h> + +#ifdef __CSKYABIV2__ +#include "cskyv2/abiv2_strcpy.S" +#else +#include "cskyv1/strcpy.S" +#endif diff --git a/libc/sysdeps/linux/common/posix_fadvise.c b/libc/sysdeps/linux/common/posix_fadvise.c index f4ec4f8..d2fb57e 100644 --- a/libc/sysdeps/linux/common/posix_fadvise.c +++ b/libc/sysdeps/linux/common/posix_fadvise.c @@ -40,7 +40,7 @@ int posix_fadvise(int fd, off_t offset, off_t len, int advice) # if __WORDSIZE == 64 ret = INTERNAL_SYSCALL(fadvise64_64, err, 4, fd, offset, len, advice); # else -# if defined (__arm__) || defined (__nds32__) || \ +# if defined (__arm__) || defined (__nds32__) || defined(__csky__) || \ (defined(__UCLIBC_SYSCALL_ALIGN_64BIT__) && (defined(__powerpc__) || defined(__xtensa__))) /* arch with 64-bit data in even reg alignment #1: [powerpc/xtensa] * custom syscall handler (rearranges @advice to avoid register hole punch) */ diff --git a/libc/sysdeps/linux/common/posix_fadvise64.c b/libc/sysdeps/linux/common/posix_fadvise64.c index 2d4e466..a7ce1ce 100644 --- a/libc/sysdeps/linux/common/posix_fadvise64.c +++ b/libc/sysdeps/linux/common/posix_fadvise64.c @@ -24,7 +24,7 @@ int posix_fadvise64(int fd, off64_t offset, off64_t len, int advice) int ret; INTERNAL_SYSCALL_DECL (err); /* ARM has always been funky. */ -#if defined (__arm__) || defined (__nds32__) || \ +#if defined (__arm__) || defined (__nds32__) || defined (__csky__) || \ (defined(__UCLIBC_SYSCALL_ALIGN_64BIT__) && (defined(__powerpc__) || defined(__xtensa__))) /* arch with 64-bit data in even reg alignment #1: [powerpc/xtensa] * custom syscall handler (rearranges @advice to avoid register hole punch) */ diff --git a/libc/sysdeps/linux/csky/Makefile b/libc/sysdeps/linux/csky/Makefile new file mode 100644 index 0000000..43dc60a --- /dev/null +++ b/libc/sysdeps/linux/csky/Makefile @@ -0,0 +1,6 @@ +top_srcdir=../../../../ +top_builddir=../../../../ +all: objs +include $(top_builddir)Rules.mak +include Makefile.arch +include $(top_srcdir)Makerules diff --git a/libc/sysdeps/linux/csky/Makefile.arch b/libc/sysdeps/linux/csky/Makefile.arch new file mode 100644 index 0000000..704b36a --- /dev/null +++ b/libc/sysdeps/linux/csky/Makefile.arch @@ -0,0 +1,6 @@ +CSRC-y := clone.c __syscall_error.c cacheflush.c + +SSRC-y := __longjmp.S setjmp.S +SSRC-y += libc-read_tp.S vfork.S csky_clone.S + + diff --git a/libc/sysdeps/linux/csky/__longjmp.S b/libc/sysdeps/linux/csky/__longjmp.S new file mode 100644 index 0000000..66ad626 --- /dev/null +++ b/libc/sysdeps/linux/csky/__longjmp.S @@ -0,0 +1,39 @@ +#include <sysdep.h> + +ENTRY(__longjmp) + ldw sp, (a0, 0) + ldw lr, (a0, 4) + + ldw l0, (a0, 8) + ldw l1, (a0, 12) + ldw l2, (a0, 16) + ldw l3, (a0, 20) + ldw l4, (a0, 24) + ldw l5, (a0, 28) + +#ifdef __CSKYABIV2__ + ldw l6, (a0, 32) + ldw l7, (a0, 36) + ldw l8, (a0, 40) + ldw l9, (a0, 44) + + ldw r26, (a0, 48) + ldw r27, (a0, 52) + ldw gb, (a0, 56) + ldw r29, (a0, 60) + ldw r30, (a0, 64) + ldw tls, (a0, 68) +#else + ldw gb, (a0, 32) +#endif + + mov a0, a1 + cmpnei a1, 0 + bt 1f + movi a0, 1 +1: + rts + +END(__longjmp) +libc_hidden_def(__longjmp) + diff --git a/libc/sysdeps/linux/csky/__syscall_error.c b/libc/sysdeps/linux/csky/__syscall_error.c new file mode 100644 index 0000000..346ce8a --- /dev/null +++ b/libc/sysdeps/linux/csky/__syscall_error.c @@ -0,0 +1,9 @@ +#include <errno.h> +#include <features.h> + +int __syscall_error(int err_no) +{ + __set_errno(-err_no); + return -1; +} + diff --git a/libc/sysdeps/linux/csky/bits/atomic.h b/libc/sysdeps/linux/csky/bits/atomic.h new file mode 100644 index 0000000..231d58f --- /dev/null +++ b/libc/sysdeps/linux/csky/bits/atomic.h @@ -0,0 +1,93 @@ +#ifndef __CSKY_ATOMIC_H_ +#define __CSKY_ATOMIC_H_ + +#include <stdint.h> +#include <sysdep.h> + +typedef int8_t atomic8_t; +typedef uint8_t uatomic8_t; +typedef int_fast8_t atomic_fast8_t; +typedef uint_fast8_t uatomic_fast8_t; + +typedef int16_t atomic16_t; +typedef uint16_t uatomic16_t; +typedef int_fast16_t atomic_fast16_t; +typedef uint_fast16_t uatomic_fast16_t; + +typedef int32_t atomic32_t; +typedef uint32_t uatomic32_t; +typedef int_fast32_t atomic_fast32_t; +typedef uint_fast32_t uatomic_fast32_t; + +typedef int64_t atomic64_t; +typedef uint64_t uatomic64_t; +typedef int_fast64_t atomic_fast64_t; +typedef uint_fast64_t uatomic_fast64_t; + +typedef intptr_t atomicptr_t; +typedef uintptr_t uatomicptr_t; +typedef intmax_t atomic_max_t; +typedef uintmax_t uatomic_max_t; + +# define __arch_compare_and_exchange_bool_8_int(mem, newval, oldval) \ + (abort (), 0) + +# define __arch_compare_and_exchange_bool_16_int(mem, newval, oldval) \ + (abort (), 0) + +# define __arch_compare_and_exchange_bool_32_int(mem, newval, oldval) \ + ({ __typeof(mem) _mem = (mem); \ + __typeof(oldval) _oldval = oldval; \ + __typeof(newval) _newval = newval; \ + register __typeof(oldval) _a0 __asm__ ("a0") = _oldval; \ + register __typeof(newval) _a1 __asm__ ("a1") = _newval; \ + register __typeof(mem) _a2 __asm__ ("a2") = _mem; \ + __asm__ __volatile__ ("trap 2;" \ + : "+r" (_a0) : "r" (_a1) , "r" (_a2) \ + : "a3", "memory"); \ + _a0; }) + +# define __arch_compare_and_exchange_bool_64_int(mem, newval, oldval) \ + (abort (), 0) + +#define __arch_compare_and_exchange_val_8_int(mem, newval, oldval) \ + (abort (), 0) + +#define __arch_compare_and_exchange_val_16_int(mem, newval, oldval) \ + (abort (), 0) + +#define __arch_compare_and_exchange_val_32_int(mem, newval, oldval) \ + ({ __typeof (mem) _mem = (mem); \ + __typeof (*mem) __gret = *_mem; \ + unsigned int _tmp = 0; \ + __typeof (oldval) _oldval = oldval; \ + __typeof (newval) _newval = newval; \ + register __typeof (oldval) _a0 __asm__ ("a0") = _oldval; \ + register __typeof (newval) _a1 __asm__ ("a1") = _newval; \ + register __typeof (mem) _a2 __asm__ ("a2") = _mem; \ + __asm__ __volatile__ ("1:\n\t" \ + "ldw %1, (%4, 0x0)\n\t" \ + "cmpne %1, %0\n\t" \ + "bt 2f\n\t" \ + "mov %2, %0\n\t" \ + "trap 2\n\t" \ + "cmpnei %0, 0\n\t" \ + "mov %0, %2\n\t" \ + "bt 1b\n\t" \ + "2: \n\t" \ + :"+r" (_a0), "+r"(__gret), "+r" (_tmp) :"r" (_a1) , "r" (_a2) \ + : "a3", "memory"); \ + __gret; }) + +# define __arch_compare_and_exchange_val_64_int(mem, newval, oldval) \ + (abort (), 0) + +# define atomic_compare_and_exchange_bool_acq(mem, new, old) \ + __atomic_bool_bysize (__arch_compare_and_exchange_bool, int, \ + mem, new, old) + +# define atomic_compare_and_exchange_val_acq(mem, new, old) \ + __atomic_val_bysize (__arch_compare_and_exchange_val, int, \ + mem, new, old) + +#endif diff --git a/libc/sysdeps/linux/csky/bits/endian.h b/libc/sysdeps/linux/csky/bits/endian.h new file mode 100644 index 0000000..09af89c --- /dev/null +++ b/libc/sysdeps/linux/csky/bits/endian.h @@ -0,0 +1,10 @@ +#ifndef _ENDIAN_H +# error "Never use <bits/endian.h> directly; include <endian.h> instead." +#endif + +/* CSKY CPU can be either big or little endian. */ +#ifdef __cskyBE__ +# define __BYTE_ORDER __BIG_ENDIAN +#else +# define __BYTE_ORDER __LITTLE_ENDIAN +#endif diff --git a/libc/sysdeps/linux/csky/bits/fcntl.h b/libc/sysdeps/linux/csky/bits/fcntl.h new file mode 100644 index 0000000..feacdad --- /dev/null +++ b/libc/sysdeps/linux/csky/bits/fcntl.h @@ -0,0 +1,193 @@ +#ifndef _FCNTL_H +# error "Never use <bits/fcntl.h> directly; include <fcntl.h> instead." +#endif + + +#include <sys/types.h> +#ifdef __USE_GNU +# include <bits/uio.h> +#endif +/* open/fcntl - O_SYNC is only implemented on blocks devices and on files + located on an ext2 file system */ +#define O_ACCMODE 0003 +#define O_RDONLY 00 +#define O_WRONLY 01 +#define O_RDWR 02 +#define O_CREAT 0100 /* not fcntl */ +#define O_EXCL 0200 /* not fcntl */ +#define O_NOCTTY 0400 /* not fcntl */ +#define O_TRUNC 01000 /* not fcntl */ +#define O_APPEND 02000 +#define O_NONBLOCK 04000 +#define O_NDELAY O_NONBLOCK +#define O_SYNC 010000 +#define O_FSYNC O_SYNC +#define O_ASYNC 020000 + +#ifdef __USE_GNU +# define O_DIRECTORY 040000 /* Must be a directory. */ +# define O_NOFOLLOW 0100000 /* Do not follow links. */ +# define O_DIRECT 0200000 /* Direct disk access. */ +# define O_STREAMING 04000000/* streaming access */ +# define O_CLOEXEC 02000000 /* set close_on_exec */ +#endif + +/* For now Linux has synchronisity options for data and read operations. + We define the symbols here but let them do the same as O_SYNC since + this is a superset. */ +#if defined __USE_POSIX199309 || defined __USE_UNIX98 +# define O_DSYNC O_SYNC /* Synchronize data. */ +# define O_RSYNC O_SYNC /* Synchronize read operations. */ +#endif + +#ifdef __USE_LARGEFILE64 +# define O_LARGEFILE 0400000 +#endif + +/* Values for the second argument to `fcntl'. */ +#define F_DUPFD 0 /* Duplicate file descriptor. */ +#define F_GETFD 1 /* Get file descriptor flags. */ +#define F_SETFD 2 /* Set file descriptor flags. */ +#define F_GETFL 3 /* Get file status flags. */ +#define F_SETFL 4 /* Set file status flags. */ +#ifndef __USE_FILE_OFFSET64 +# define F_GETLK 5 /* Get record locking info. */ +# define F_SETLK 6 /* Set record locking info (non-blocking). */ +# define F_SETLKW 7 /* Set record locking info (blocking). */ +#else +# define F_GETLK F_GETLK64 /* Get record locking info. */ +# define F_SETLK F_SETLK64 /* Set record locking info (non-blocking).*/ +# define F_SETLKW F_SETLKW64 /* Set record locking info (blocking). */ +#endif +#define F_GETLK64 12 /* Get record locking info. */ +#define F_SETLK64 13 /* Set record locking info (non-blocking). */ +#define F_SETLKW64 14 /* Set record locking info (blocking). */ + +#if defined __USE_BSD || defined __USE_XOPEN2K +# define F_SETOWN 8 /* Get owner of socket (receiver of SIGIO). */ +# define F_GETOWN 9 /* Set owner of socket (receiver of SIGIO). */ +#endif + +#ifdef __USE_GNU +# define F_SETSIG 10 /* Set number of signal to be sent. */ +# define F_GETSIG 11 /* Get number of signal to be sent. */ +#endif + +#ifdef __USE_GNU +# define F_SETLEASE 1024 /* Set a lease. */ +# define F_GETLEASE 1025 /* Enquire what lease is active. */ +# define F_NOTIFY 1026 /* Request notfications on a directory. */ +#endif + +/* For F_[GET|SET]FL. */ +#define FD_CLOEXEC 1 /* actually anything with low bit set goes */ + +/* For posix fcntl() and `l_type' field of a `struct flock' for lockf(). */ +#define F_RDLCK 0 /* Read lock. */ +#define F_WRLCK 1 /* Write lock. */ +#define F_UNLCK 2 /* Remove lock. */ + +/* For old implementation of bsd flock(). */ +#define F_EXLCK 4 /* or 3 */ +#define F_SHLCK 8 /* or 4 */ + +#ifdef __USE_BSD +/* Operations for bsd flock(), also used by the kernel implementation. */ +# define LOCK_SH 1 /* shared lock */ +# define LOCK_EX 2 /* exclusive lock */ +# define LOCK_NB 4 /* or'd with one of the above to prevent + blocking */ +# define LOCK_UN 8 /* remove lock */ +#endif + +#ifdef __USE_GNU +# define LOCK_MAND 32 /* This is a mandatory flock: */ +# define LOCK_READ 64 /* ... which allows concurrent read operations. */ +# define LOCK_WRITE 128 /* ... which allows concurrent write operations. */ +# define LOCK_RW 192 /* ... Which allows concurrent read & write operations. */ +#endif + +#ifdef __USE_GNU +/* Types of directory notifications that may be requested with F_NOTIFY. */ +# define DN_ACCESS 0x00000001 /* File accessed. */ +# define DN_MODIFY 0x00000002 /* File modified. */ +# define DN_CREATE 0x00000004 /* File created. */ +# define DN_DELETE 0x00000008 /* File removed. */ +# define DN_RENAME 0x00000010 /* File renamed. */ +# define DN_ATTRIB 0x00000020 /* File changed attibutes. */ +# define DN_MULTISHOT 0x80000000 /* Don't remove notifier. */ +#endif + +struct flock + { + short int l_type; /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK. */ + short int l_whence; /* Where `l_start' is relative to (like `lseek'). */ +#ifndef __USE_FILE_OFFSET64 + __off_t l_start; /* Offset where the lock begins. */ + __off_t l_len; /* Size of the locked area; zero means until EOF. */ +#else + __off64_t l_start; /* Offset where the lock begins. */ + __off64_t l_len; /* Size of the locked area; zero means until EOF. */ +#endif + __pid_t l_pid; /* Process holding the lock. */ + }; + +#ifdef __USE_LARGEFILE64 +struct flock64 + { + short int l_type; /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK. */ + short int l_whence; /* Where `l_start' is relative to (like `lseek'). */ + __off64_t l_start; /* Offset where the lock begins. */ + __off64_t l_len; /* Size of the locked area; zero means until EOF. */ + __pid_t l_pid; /* Process holding the lock. */ + }; +#endif + +/* Define some more compatibility macros to be backward compatible with + BSD systems which did not managed to hide these kernel macros. */ +#ifdef __USE_BSD +# define FAPPEND O_APPEND +# define FFSYNC O_FSYNC +# define FASYNC O_ASYNC +# define FNONBLOCK O_NONBLOCK +# define FNDELAY O_NDELAY +#endif /* Use BSD. */ + +/* Advise to `posix_fadvise'. */ +#ifdef __USE_XOPEN2K +# define POSIX_FADV_NORMAL 0 /* No further special treatment. */ +# define POSIX_FADV_RANDOM 1 /* Expect random page references. */ +# define POSIX_FADV_SEQUENTIAL 2 /* Expect sequential page references. */ +# define POSIX_FADV_WILLNEED 3 /* Will need these pages. */ +# define POSIX_FADV_DONTNEED 4 /* Don't need these pages. */ +# define POSIX_FADV_NOREUSE 5 /* Data will be accessed once. */ +#endif + +__BEGIN_DECLS + +#if defined __USE_GNU && defined __UCLIBC_LINUX_SPECIFIC__ + +/* Provide kernel hint to read ahead. */ +extern ssize_t readahead (int __fd, __off64_t __offset, size_t __count) + __THROW; + + +/* Selective file content synch'ing. */ +extern int sync_file_range (int __fd, __off64_t __from, __off64_t __to, + unsigned int __flags); + +/* Splice address range into a pipe. */ +extern ssize_t vmsplice (int __fdout, const struct iovec *__iov, + size_t __count, unsigned int __flags); + +/* Splice two files together. */ +extern ssize_t splice (int __fdin, __off64_t *__offin, int __fdout, + __off64_t *__offout, size_t __len, + unsigned int __flags); + +/* In-kernel implementation of tee for pipe buffers. */ +extern ssize_t tee (int __fdin, int __fdout, size_t __len, + unsigned int __flags); + +#endif +__END_DECLS diff --git a/libc/sysdeps/linux/csky/bits/fenv.h b/libc/sysdeps/linux/csky/bits/fenv.h new file mode 100644 index 0000000..606fe79 --- /dev/null +++ b/libc/sysdeps/linux/csky/bits/fenv.h @@ -0,0 +1,58 @@ +#ifndef _FENV_H +# error "Never use <bits/fenv.h> directly; include <fenv.h> instead." +#endif + +/* Define bits representing the exception. We use the bit positions of + the appropriate bits in the FPSR Accrued Exception Byte. */ +enum + { + FE_INEXACT = 1 << 3, +#define FE_INEXACT FE_INEXACT + FE_DIVBYZERO = 1 << 4, +#define FE_DIVBYZERO FE_DIVBYZERO + FE_UNDERFLOW = 1 << 5, +#define FE_UNDERFLOW FE_UNDERFLOW + FE_OVERFLOW = 1 << 6, +#define FE_OVERFLOW FE_OVERFLOW + FE_INVALID = 1 << 7 +#define FE_INVALID FE_INVALID + }; + +#define FE_ALL_EXCEPT \ + (FE_INEXACT | FE_DIVBYZERO | FE_UNDERFLOW | FE_OVERFLOW | FE_INVALID) + +/* The csky FPU supports all of the four defined rounding modes. We use + the bit positions in the FPCR Mode Control Byte as the values for the + appropriate macros. */ +enum + { + FE_TONEAREST = 0, +#define FE_TONEAREST FE_TONEAREST + FE_TOWARDZERO = 1 << 4, +#define FE_TOWARDZERO FE_TOWARDZERO + FE_DOWNWARD = 2 << 4, +#define FE_DOWNWARD FE_DOWNWARD + FE_UPWARD = 3 << 4 +#define FE_UPWARD FE_UPWARD + }; + +/* Type representing exception flags. */ +typedef unsigned int fexcept_t; + +/* Type representing floating-point environment. This structure + corresponds to the layout of the block written by `fmovem'. */ +typedef struct + { + unsigned int __control_register; + unsigned int __status_register; + unsigned int __instruction_address; + } +fenv_t; + +/* If the default argument is used we use this value. */ +#define FE_DFL_ENV ((__const fenv_t *) -1) + +#ifdef __USE_GNU +/* Floating-point environment where none of the exceptions are masked. */ +# define FE_NOMASK_ENV ((__const fenv_t *) -2) +#endif diff --git a/libc/sysdeps/linux/csky/bits/kernel_stat.h b/libc/sysdeps/linux/csky/bits/kernel_stat.h new file mode 100644 index 0000000..079a01a --- /dev/null +++ b/libc/sysdeps/linux/csky/bits/kernel_stat.h @@ -0,0 +1,60 @@ +#ifndef _BITS_STAT_STRUCT_H +#define _BITS_STAT_STRUCT_H + +#define STAT_HAVE_NSEC 1 + +struct kernel_stat { +#if defined(__cskyBE__) + 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(__cskyBE__) + 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 char __pad0[4]; + +#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 char __pad3[4]; + + long long st_size; + unsigned long st_blksize; + unsigned long long st_blocks; /* Number 512-byte blocks allocated. */ + + struct timespec st_atim; + struct timespec st_mtim; + struct timespec st_ctim; + unsigned long long st_ino; +}; + +#endif /* _BITS_STAT_STRUCT_H */ + diff --git a/libc/sysdeps/linux/csky/bits/kernel_types.h b/libc/sysdeps/linux/csky/bits/kernel_types.h new file mode 100644 index 0000000..80c9d59 --- /dev/null +++ b/libc/sysdeps/linux/csky/bits/kernel_types.h @@ -0,0 +1,47 @@ +/* Note that we use the exact same include guard #define names + * as asm/posix_types.h. This will avoid gratuitous conflicts + * with the posix_types.h kernel header, and will ensure that + * our private content, and not the kernel header, will win. + * -Erik + */ +#if !defined(__ARCH_CSKY_POSIX_TYPES_H) || !defined(__ASM_GENERIC_POSIX_TYPES_H) +#define __ARCH_CSKY_POSIX_TYPES_H +#define __ASM_GENERIC_POSIX_TYPES_H + +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 long long __kernel_loff_t; +typedef __kernel_dev_t __kernel_old_dev_t; +typedef long __kernel_long_t; +typedef unsigned long __kernel_ulong_t; + +typedef struct { +#ifdef __USE_ALL + int val[2]; +#else + int __val[2]; +#endif +} __kernel_fsid_t; + +#endif /* __ARCH_CSKY_POSIX_TYPES_H */ diff --git a/libc/sysdeps/linux/csky/bits/mathinline.h b/libc/sysdeps/linux/csky/bits/mathinline.h new file mode 100644 index 0000000..d6ab1a2 --- /dev/null +++ b/libc/sysdeps/linux/csky/bits/mathinline.h @@ -0,0 +1,445 @@ +#ifdef __GNUC__ + +#ifdef __USE_ISOC99 + +/* ISO C99 defines some macros to perform unordered comparisons. The + csky FPU supports this with special opcodes and we should use them. + These must not be inline functions since we have to be able to handle + all floating-point types. */ +# define isgreater(x, y) \ + __extension__ \ + ({ char __result; \ + __asm__ ("fcmp%.x %2,%1; fsogt %0" \ + : "=dm" (__result) : "f" (x), "f" (y)); \ + __result != 0; }) + +# define isgreaterequal(x, y) \ + __extension__ \ + ({ char __result; \ + __asm__ ("fcmp%.x %2,%1; fsoge %0" \ + : "=dm" (__result) : "f" (x), "f" (y)); \ + __result != 0; }) + +# define isless(x, y) \ + __extension__ \ + ({ char __result; \ + __asm__ ("fcmp%.x %2,%1; fsolt %0" \ + : "=dm" (__result) : "f" (x), "f" (y)); \ + __result != 0; }) + +# define islessequal(x, y) \ + __extension__ \ + ({ char __result; \ + __asm__ ("fcmp%.x %2,%1; fsole %0" \ + : "=dm" (__result) : "f" (x), "f" (y)); \ + __result != 0; }) + +# define islessgreater(x, y) \ + __extension__ \ + ({ char __result; \ + __asm__ ("fcmp%.x %2,%1; fsogl %0" \ + : "=dm" (__result) : "f" (x), "f" (y)); \ + __result != 0; }) + +# define isunordered(x, y) \ + __extension__ \ + ({ char __result; \ + __asm__ ("fcmp%.x %2,%1; fsun %0" \ + : "=dm" (__result) : "f" (x), "f" (y)); \ + __result != 0; }) +#endif + + +#if (!defined __NO_MATH_INLINES && defined __OPTIMIZE__) \ + || defined __LIBC_INTERNAL_MATH_INLINES + +#ifdef __LIBC_INTERNAL_MATH_INLINES +/* This is used when defining the functions themselves. Define them with + __ names, and with `static inline' instead of `extern inline' so the + bodies will always be used, never an external function call. */ +# define __m81_u(x) __CONCAT(__,x) +# define __m81_inline static __inline +#else +# define __m81_u(x) x +# ifdef __cplusplus +# define __m81_inline __inline +# else +# define __m81_inline extern __inline +# endif +# define __M81_MATH_INLINES 1 +#endif + +/* Define a const math function. */ +#define __m81_defun(rettype, func, args) \ + __m81_inline rettype __attribute__((__const__)) \ + __m81_u(func) args + +/* Define the three variants of a math function that has a direct + implementation in the csky fpu. FUNC is the name for C (which will be + suffixed with f and l for the float and long double version, resp). OP + is the name of the fpu operation (without leading f). */ + +#if defined __USE_MISC || defined __USE_ISOC99 +# define __inline_mathop(func, op) \ + __inline_mathop1(double, func, op) \ + __inline_mathop1(float, __CONCAT(func,f), op) \ + __inline_mathop1(long double, __CONCAT(func,l), op) +#else +# define __inline_mathop(func, op) \ + __inline_mathop1(double, func, op) +#endif + +#define __inline_mathop1(float_type,func, op) \ + __m81_defun (float_type, func, (float_type __mathop_x)) __THROW \ + { \ + float_type __result; \ + __asm("f" __STRING(op) "%.x %1, %0" : "=f" (__result) : "f" (__mathop_x));\ + return __result; \ + } + +__inline_mathop(__atan, atan) +__inline_mathop(__cos, cos) +__inline_mathop(__sin, sin) +__inline_mathop(__tan, tan) +__inline_mathop(__tanh, tanh) +__inline_mathop(__fabs, abs) + +#if defined __USE_MISC || defined __USE_XOPEN_EXTENDED || defined __USE_ISOC99 +__inline_mathop(__rint, int) +__inline_mathop(__expm1, etoxm1) +__inline_mathop(__log1p, lognp1) +#endif + +#ifdef __USE_MISC +__inline_mathop(__significand, getman) +#endif + +#ifdef __USE_ISOC99 +__inline_mathop(__trunc, intrz) +#endif + +#if !defined __NO_MATH_INLINES && defined __OPTIMIZE__ + +__inline_mathop(atan, atan) +__inline_mathop(cos, cos) +__inline_mathop(sin, sin) +__inline_mathop(tan, tan) +__inline_mathop(tanh, tanh) + +# if defined __USE_MISC || defined __USE_XOPEN_EXTENDED || defined __USE_ISOC99 +__inline_mathop(rint, int) +__inline_mathop(expm1, etoxm1) +__inline_mathop(log1p, lognp1) +# endif + +# ifdef __USE_MISC +__inline_mathop(significand, getman) +# endif + +# ifdef __USE_ISOC99 +__inline_mathop(trunc, intrz) +# endif + +#endif /* !__NO_MATH_INLINES && __OPTIMIZE__ */ + +/* This macro contains the definition for the rest of the inline + functions, using FLOAT_TYPE as the domain type and S as the suffix + for the function names. */ + +#define __inline_functions(float_type, s) \ +__m81_inline float_type \ +__m81_u(__CONCAT(__frexp,s))(float_type __value, int *__expptr) __THROW \ +{ \ + float_type __mantissa, __exponent; \ + int __iexponent; \ + unsigned long __fpsr; \ + __asm("ftst%.x %1\n" \ + "fmove%.l %/fpsr, %0" : "=dm" (__fpsr) : "f" (__value)); \ + if (__fpsr & (7 << 24)) \ + { \ + /* Not finite or zero. */ \ + *__expptr = 0; \ + return __value; \ + } \ + __asm("fgetexp%.x %1, %0" : "=f" (__exponent) : "f" (__value)); \ + __iexponent = (int) __exponent + 1; \ + *__expptr = __iexponent; \ + __asm("fscale%.l %2, %0" : "=f" (__mantissa) \ + : "0" (__value), "dmi" (-__iexponent)); \ + return __mantissa; \ +} \ + \ +__m81_defun (float_type, __CONCAT(__floor,s), (float_type __x)) __THROW \ +{ \ + float_type __result; \ + unsigned long int __ctrl_reg; \ + __asm __volatile__ ("fmove%.l %!, %0" : "=dm" (__ctrl_reg)); \ + /* Set rounding towards negative infinity. */ \ + __asm __volatile__ ("fmove%.l %0, %!" : /* No outputs. */ \ + : "dmi" ((__ctrl_reg & ~0x10) | 0x20)); \ + /* Convert X to an integer, using -Inf rounding. */ \ + __asm __volatile__ ("fint%.x %1, %0" : "=f" (__result) : "f" (__x)); \ + /* Restore the previous rounding mode. */ \ + __asm __volatile__ ("fmove%.l %0, %!" : /* No outputs. */ \ + : "dmi" (__ctrl_reg)); \ + return __result; \ +} \ + \ +__m81_defun (float_type, __CONCAT(__ceil,s), (float_type __x)) __THROW \ +{ \ + float_type __result; \ + unsigned long int __ctrl_reg; \ + __asm __volatile__ ("fmove%.l %!, %0" : "=dm" (__ctrl_reg)); \ + /* Set rounding towards positive infinity. */ \ + __asm __volatile__ ("fmove%.l %0, %!" : /* No outputs. */ \ + : "dmi" (__ctrl_reg | 0x30)); \ + /* Convert X to an integer, using +Inf rounding. */ \ + __asm __volatile__ ("fint%.x %1, %0" : "=f" (__result) : "f" (__x)); \ + /* Restore the previous rounding mode. */ \ + __asm __volatile__ ("fmove%.l %0, %!" : /* No outputs. */ \ + : "dmi" (__ctrl_reg)); \ + return __result; \ +} + +__inline_functions(double,) +#if defined __USE_MISC || defined __USE_ISOC99 +__inline_functions(float,f) +__inline_functions(long double,l) +#endif +#undef __inline_functions + +#ifdef __USE_MISC + +# define __inline_functions(float_type, s) \ +__m81_defun (int, __CONCAT(__isinf,s), (float_type __value)) __THROW \ +{ \ + /* There is no branch-condition for infinity, \ + so we must extract and examine the condition codes manually. */ \ + unsigned long int __fpsr; \ + __asm("ftst%.x %1\n" \ + "fmove%.l %/fpsr, %0" : "=dm" (__fpsr) : "f" (__value)); \ + return (__fpsr & (2 << 24)) ? (__fpsr & (8 << 24) ? -1 : 1) : 0; \ +} \ + \ +__m81_defun (int, __CONCAT(__finite,s), (float_type __value)) __THROW \ +{ \ + /* There is no branch-condition for infinity, so we must extract and \ + examine the condition codes manually. */ \ + unsigned long int __fpsr; \ + __asm ("ftst%.x %1\n" \ + "fmove%.l %/fpsr, %0" : "=dm" (__fpsr) : "f" (__value)); \ + return (__fpsr & (3 << 24)) == 0; \ +} \ + \ +__m81_defun (float_type, __CONCAT(__scalbn,s), \ + (float_type __x, int __n)) __THROW \ +{ \ + float_type __result; \ + __asm ("fscale%.l %1, %0" : "=f" (__result) : "dmi" (__n), "0" (__x)); \ + return __result; \ +} + +__inline_functions(double,) +__inline_functions(float,f) +__inline_functions(long double,l) +# undef __inline_functions + +#endif /* Use misc. */ + +#if defined __USE_MISC || defined __USE_XOPEN + +# define __inline_functions(float_type, s) \ +__m81_defun (int, __CONCAT(__isnan,s), (float_type __value)) __THROW \ +{ \ + char __result; \ + __asm("ftst%.x %1\n" \ + "fsun %0" : "=dm" (__result) : "f" (__value)); \ + return __result; \ +} + +__inline_functions(double,) +# ifdef __USE_MISC +__inline_functions(float,f) +__inline_functions(long double,l) +# endif +# undef __inline_functions + +#endif + +#ifdef __USE_ISOC99 + +# define __inline_functions(float_type, s) \ +__m81_defun (int, __CONCAT(__signbit,s), (float_type __value)) __THROW \ +{ \ + /* There is no branch-condition for the sign bit, so we must extract \ + and examine the condition codes manually. */ \ + unsigned long int __fpsr; \ + __asm ("ftst%.x %1\n" \ + "fmove%.l %/fpsr, %0" : "=dm" (__fpsr) : "f" (__value)); \ + return (__fpsr >> 27) & 1; \ +} \ + \ +__m81_defun (float_type, __CONCAT(__scalbln,s), \ + (float_type __x, long int __n)) __THROW \ +{ \ + return __CONCAT(__scalbn,s) (__x, __n); \ +} \ + \ +__m81_defun (float_type, __CONCAT(__nearbyint,s), (float_type __x)) __THROW \ +{ \ + float_type __result; \ + unsigned long int __ctrl_reg; \ + __asm __volatile__ ("fmove%.l %!, %0" : "=dm" (__ctrl_reg)); \ + /* Temporarily disable the inexact exception. */ \ + __asm __volatile__ ("fmove%.l %0, %!" : /* No outputs. */ \ + : "dmi" (__ctrl_reg & ~0x200)); \ + __asm __volatile__ ("fint%.x %1, %0" : "=f" (__result) : "f" (__x)); \ + __asm __volatile__ ("fmove%.l %0, %!" : /* No outputs. */ \ + : "dmi" (__ctrl_reg)); \ + return __result; \ +} \ + \ +__m81_defun (long int, __CONCAT(__lrint,s), (float_type __x)) __THROW \ +{ \ + long int __result; \ + __asm ("fmove%.l %1, %0" : "=dm" (__result) : "f" (__x)); \ + return __result; \ +} \ + \ +__m81_inline float_type \ +__m81_u(__CONCAT(__fma,s))(float_type __x, float_type __y, \ + float_type __z) __THROW \ +{ \ + return (__x * __y) + __z; \ +} + +__inline_functions (double,) +__inline_functions (float,f) +__inline_functions (long double,l) +# undef __inline_functions + +#endif /* Use ISO C9x */ + +#ifdef __USE_GNU + +# define __inline_functions(float_type, s) \ +__m81_inline void \ +__m81_u(__CONCAT(__sincos,s))(float_type __x, float_type *__sinx, \ + float_type *__cosx) __THROW \ +{ \ + __asm ("fsincos%.x %2,%1:%0" \ + : "=f" (*__sinx), "=f" (*__cosx) : "f" (__x)); \ +} + +__inline_functions (double,) +__inline_functions (float,f) +__inline_functions (long double,l) +# undef __inline_functions + +#endif + +#if !defined __NO_MATH_INLINES && defined __OPTIMIZE__ + +/* Define inline versions of the user visible functions. */ + +/* Note that there must be no whitespace before the argument passed for + NAME, to make token pasting work correctly with -traditional. */ +# define __inline_forward_c(rettype, name, args1, args2) \ +extern __inline rettype __attribute__((__const__)) \ +name args1 __THROW \ +{ \ + return __CONCAT(__,name) args2; \ +} + +# define __inline_forward(rettype, name, args1, args2) \ +extern __inline rettype name args1 __THROW \ +{ \ + return __CONCAT(__,name) args2; \ +} + +__inline_forward(double,frexp, (double __value, int *__expptr), + (__value, __expptr)) +__inline_forward_c(double,floor, (double __x), (__x)) +__inline_forward_c(double,ceil, (double __x), (__x)) +# ifdef __USE_MISC +# ifndef __USE_ISOC99 /* Conflict with macro of same name. */ +__inline_forward_c(int,isinf, (double __value), (__value)) +# endif +__inline_forward_c(int,finite, (double __value), (__value)) +__inline_forward_c(double,scalbn, (double __x, int __n), (__x, __n)) +# endif +# if defined __USE_MISC || defined __USE_XOPEN +# ifndef __USE_ISOC99 /* Conflict with macro of same name. */ +__inline_forward_c(int,isnan, (double __value), (__value)) +# endif +# endif +# ifdef __USE_ISOC99 +__inline_forward_c(double,scalbln, (double __x, long int __n), (__x, __n)) +__inline_forward_c(double,nearbyint, (double __value), (__value)) +__inline_forward_c(long int,lrint, (double __value), (__value)) +__inline_forward_c(double,fma, (double __x, double __y, double __z), + (__x, __y, __z)) +# endif +# ifdef __USE_GNU +__inline_forward(void,sincos, (double __x, double *__sinx, double *__cosx), + (__x, __sinx, __cosx)) +# endif + +# if defined __USE_MISC || defined __USE_ISOC99 + +__inline_forward(float,frexpf, (float __value, int *__expptr), + (__value, __expptr)) +__inline_forward_c(float,floorf, (float __x), (__x)) +__inline_forward_c(float,ceilf, (float __x), (__x)) +# ifdef __USE_MISC +__inline_forward_c(int,isinff, (float __value), (__value)) +__inline_forward_c(int,finitef, (float __value), (__value)) +__inline_forward_c(float,scalbnf, (float __x, int __n), (__x, __n)) +__inline_forward_c(int,isnanf, (float __value), (__value)) +# endif +# ifdef __USE_ISOC99 +__inline_forward_c(float,scalblnf, (float __x, long int __n), (__x, __n)) +__inline_forward_c(float,nearbyintf, (float __value), (__value)) +__inline_forward_c(long int,lrintf, (float __value), (__value)) +__inline_forward_c(float,fmaf, (float __x, float __y, float __z), + (__x, __y, __z)) +# endif +# ifdef __USE_GNU +__inline_forward(void,sincosf, (float __x, float *__sinx, float *__cosx), + (__x, __sinx, __cosx)) +# endif + +__inline_forward(long double,frexpl, (long double __value, int *__expptr), + (__value, __expptr)) +__inline_forward_c(long double,floorl, (long double __x), (__x)) +__inline_forward_c(long double,ceill, (long double __x), (__x)) +# ifdef __USE_MISC +__inline_forward_c(int,isinfl, (long double __value), (__value)) +__inline_forward_c(int,finitel, (long double __value), (__value)) +__inline_forward_c(long double,scalbnl, (long double __x, int __n), (__x, __n)) +__inline_forward_c(int,isnanl, (long double __value), (__value)) +# endif +# ifdef __USE_ISOC99 +__inline_forward_c(long double,scalblnl, (long double __x, long int __n), + (__x, __n)) +__inline_forward_c(long double,nearbyintl, (long double __value), (__value)) +__inline_forward_c(long int,lrintl, (long double __value), (__value)) +__inline_forward_c(long double,fmal, + (long double __x, long double __y, long double __z), + (__x, __y, __z)) +# endif +# ifdef __USE_GNU +__inline_forward(void,sincosl, + (long double __x, long double *__sinx, long double *__cosx), + (__x, __sinx, __cosx)) +# endif + +#endif /* Use misc or ISO C99 */ + +#undef __inline_forward +#undef __inline_forward_c + +#endif /* !__NO_MATH_INLINES && __OPTIMIZE__ */ + +#endif +#endif diff --git a/libc/sysdeps/linux/csky/bits/setjmp.h b/libc/sysdeps/linux/csky/bits/setjmp.h new file mode 100644 index 0000000..c818ec9 --- /dev/null +++ b/libc/sysdeps/linux/csky/bits/setjmp.h @@ -0,0 +1,19 @@ +#ifndef _BITS_SETJMP_H +#define _BITS_SETJMP_H 1 + +#if !defined _SETJMP_H && !defined _PTHREAD_H +# error "Never include <bits/setjmp.h> directly; use <setjmp.h> instead." +#endif + +typedef struct +{ + unsigned long __sp; /* the return stack address */ + unsigned long __pc; /* pc: r15, return address */ + /* + * ABIV1 is r8~r14 + * ABIV2 is r4~r11, r16~r17, r26~r31 + */ + unsigned long __regs[16]; +} __jmp_buf[1]; + +#endif /* _BITS_SETJMP_H */ diff --git a/libc/sysdeps/linux/csky/bits/shm.h b/libc/sysdeps/linux/csky/bits/shm.h new file mode 100644 index 0000000..bfb44bb --- /dev/null +++ b/libc/sysdeps/linux/csky/bits/shm.h @@ -0,0 +1,85 @@ +#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 (__getpagesize () << 2) +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 */ +# define SHM_NORESERVE 010000 /* don't check for reservations */ + +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/csky/bits/sigcontextinfo.h b/libc/sysdeps/linux/csky/bits/sigcontextinfo.h new file mode 100644 index 0000000..b7e08cf --- /dev/null +++ b/libc/sysdeps/linux/csky/bits/sigcontextinfo.h @@ -0,0 +1,26 @@ +/* Copyright (C) 1998, 1999, 2001 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Andreas Schwab &lt;schwab(a)issan.informatik.uni-dortmund.de&gt;de>, 1998. + + 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 SIGCONTEXT int _code, struct sigcontext * +#define SIGCONTEXT_EXTRA_ARGS _code, +#define GET_PC(ctx) ((void *) (ctx)->sc_pc) +#define GET_FRAME(ctx) ((void *) __builtin_frame_address (1)) +#define GET_STACK(ctx) ((void *) (ctx)->sc_usp) +#define CALL_SIGHANDLER(handler, signo, ctx) \ + (handler)((signo), SIGCONTEXT_EXTRA_ARGS (ctx)) diff --git a/libc/sysdeps/linux/csky/bits/stackinfo.h b/libc/sysdeps/linux/csky/bits/stackinfo.h new file mode 100644 index 0000000..aaf9807 --- /dev/null +++ b/libc/sysdeps/linux/csky/bits/stackinfo.h @@ -0,0 +1,6 @@ +#ifndef _STACKINFO_H +#define _STACKINFO_H 1 + +#define _STACK_GROWS_DOWN 1 + +#endif diff --git a/libc/sysdeps/linux/csky/bits/syscalls.h b/libc/sysdeps/linux/csky/bits/syscalls.h new file mode 100644 index 0000000..04d01f4 --- /dev/null +++ b/libc/sysdeps/linux/csky/bits/syscalls.h @@ -0,0 +1,113 @@ +#ifndef _BITS_SYSCALLS_H +#define _BITS_SYSCALLS_H +#ifndef _SYSCALL_H +# error "Never use <bits/syscalls.h> directly; include <sys/syscall.h> instead." +#endif + +#undef __NR_iopl +#undef __NR_vm86 + +/* + Some of the sneaky macros in the code were taken from + glibc-2.3.2/sysdeps/unix/sysv/linux/arm/sysdep.h +*/ + +//#include <errno.h> + +#define INLINE_SYSCALL_NCS(name, nr, args...) \ +(__extension__ \ + ({ \ + unsigned int _inline_sys_result = INTERNAL_SYSCALL_NCS (name, , nr, args);\ + if (unlikely (INTERNAL_SYSCALL_ERROR_P (_inline_sys_result, ))) \ + { \ + __set_errno (INTERNAL_SYSCALL_ERRNO (_inline_sys_result, )); \ + _inline_sys_result = (unsigned int) -1; \ + } \ + (int) _inline_sys_result; \ + }) \ +) + +#undef INTERNAL_SYSCALL_NCS +#ifndef __cskyabiv2__ +#define INTERNAL_SYSCALL_NCS(name, err, nr, args...) \ + ({unsigned int __sys_result; \ + { \ + register int _a1 __asm__ ("a0"), _nr __asm__ ("r1"); \ + LOAD_ARGS_##nr (args) \ + _nr = (name); \ + __asm__ __volatile__ ("trap 0 \n\t" \ + : "=r" (_a1) \ + : "r" (_nr) ASM_ARGS_##nr \ + : "memory"); \ + __sys_result = _a1; \ + } \ + (int) __sys_result; }) + +#else /* __cskyabiv2__ */ +#define INTERNAL_SYSCALL_NCS(name, err, nr, args...) \ + ({unsigned int __sys_result; \ + { \ + register int _a1 __asm__ ("a0"), _nr __asm__ ("r7"); \ + LOAD_ARGS_##nr (args) \ + _nr = (name); \ + __asm__ __volatile__ ("trap 0 \n\t" \ + : "=r" (_a1) \ + : "r" (_nr) ASM_ARGS_##nr \ + : "memory"); \ + __sys_result = _a1; \ + } \ + (int) __sys_result; }) +#endif /* __ABI_CSKY_V2__ */ + +#define INTERNAL_SYSCALL_ERROR_P(val, err) \ + ((unsigned int) (val) >= 0xfffff001u) + +#define LOAD_ARGS_0() +#define ASM_ARGS_0 +#define LOAD_ARGS_1(a1) \ + _a1 = (int) (a1); \ + LOAD_ARGS_0 () +#define ASM_ARGS_1 ASM_ARGS_0, "r" (_a1) +#define LOAD_ARGS_2(a1, a2) \ + register int _a2 __asm__ ("a1") = (int) (a2); \ + LOAD_ARGS_1 (a1) +#define ASM_ARGS_2 ASM_ARGS_1, "r" (_a2) +#define LOAD_ARGS_3(a1, a2, a3) \ + register int _a3 __asm__ ("a2") = (int) (a3); \ + LOAD_ARGS_2 (a1, a2) +#define ASM_ARGS_3 ASM_ARGS_2, "r" (_a3) +#define LOAD_ARGS_4(a1, a2, a3, a4) \ + register int _a4 __asm__ ("a3") = (int) (a4); \ + LOAD_ARGS_3 (a1, a2, a3) +#define ASM_ARGS_4 ASM_ARGS_3, "r" (_a4) + +#ifndef __cskyabiv2__ +#define LOAD_ARGS_5(a1, a2, a3, a4, a5) \ + register int _v1 __asm__ ("a4") = (int) (a5); \ + LOAD_ARGS_4 (a1, a2, a3, a4) +#define ASM_ARGS_5 ASM_ARGS_4, "r" (_v1) +#define LOAD_ARGS_6(a1, a2, a3, a4, a5, a6) \ + register int _v2 __asm__ ("a5") = (int) (a6); \ + LOAD_ARGS_5 (a1, a2, a3, a4, a5) +#define ASM_ARGS_6 ASM_ARGS_5, "r" (_v2) +#define LOAD_ARGS_7(a1, a2, a3, a4, a5, a6, a7) \ + register int _v3 __asm__ ("r8") = (int) (a7); \ + LOAD_ARGS_6 (a1, a2, a3, a4, a5, a6) +#define ASM_ARGS_7 ASM_ARGS_6, "r" (_v3) +#else /* __cskyabiv2__ */ +#define LOAD_ARGS_5(a1, a2, a3, a4, a5) \ + register int _v1 __asm__ ("l0") = (int) (a5); \ + LOAD_ARGS_4 (a1, a2, a3, a4) +#define ASM_ARGS_5 ASM_ARGS_4, "r" (_v1) +#define LOAD_ARGS_6(a1, a2, a3, a4, a5, a6) \ + register int _v2 __asm__ ("l1") = (int) (a6); \ + LOAD_ARGS_5 (a1, a2, a3, a4, a5) +#define ASM_ARGS_6 ASM_ARGS_5, "r" (_v2) +#define LOAD_ARGS_7(a1, a2, a3, a4, a5, a6, a7) \ + register int _v3 __asm__ ("l2") = (int) (a7); \ + LOAD_ARGS_6 (a1, a2, a3, a4, a5, a6) +#define ASM_ARGS_7 ASM_ARGS_6, "r" (_v3) +#endif /* __ABI_CSKY_V2__ */ + + +#endif /* _BITS_SYSCALLS_H */ diff --git a/libc/sysdeps/linux/csky/bits/uClibc_arch_features.h b/libc/sysdeps/linux/csky/bits/uClibc_arch_features.h new file mode 100644 index 0000000..ca898ee --- /dev/null +++ b/libc/sysdeps/linux/csky/bits/uClibc_arch_features.h @@ -0,0 +1,46 @@ +/* + * Track misc arch-specific features that aren't config options + */ + +#ifndef _BITS_UCLIBC_ARCH_FEATURES_H +#define _BITS_UCLIBC_ARCH_FEATURES_H + +# define __UCLIBC_ABORT_INSTRUCTION__ ".long 0xffffffff" + +/* can your target use syscall6() for mmap ? */ +#undef __UCLIBC_MMAP_HAS_6_ARGS__ + +#ifdef __CSKYABIV2__ +#undef __UCLIBC_SYSCALL_ALIGN_64BIT__ +#else +#define __UCLIBC_SYSCALL_ALIGN_64BIT__ +#endif + +/* does your target have a broken create_module() ? */ +#define __UCLIBC_BROKEN_CREATE_MODULE__ + +/* does your target have to worry about older [gs]etrlimit() ? */ +#define __UCLIBC_HANDLE_OLDER_RLIMIT__ + +/* does your target have an asm .set ? */ +#define __UCLIBC_HAVE_ASM_SET_DIRECTIVE__ + +/* define if target doesn't like .global */ +#undef __UCLIBC_ASM_GLOBAL_DIRECTIVE__ + +/* define if target supports .weak */ +#define __UCLIBC_HAVE_ASM_WEAK_DIRECTIVE__ + +/* define if target supports .weakext */ +#undef __UCLIBC_HAVE_ASM_WEAKEXT_DIRECTIVE__ + +/* needed probably only for ppc64 */ +#undef __UCLIBC_HAVE_ASM_GLOBAL_DOT_NAME__ + +/* define if target supports IEEE signed zero floats */ +#define __UCLIBC_HAVE_SIGNED_ZERO__ + +/* define if target supports CFI pseudo ops */ +#define __UCLIBC_HAVE_ASM_CFI_DIRECTIVES__ + +#endif /* _BITS_UCLIBC_ARCH_FEATURES_H */ diff --git a/libc/sysdeps/linux/csky/bits/wordsize.h b/libc/sysdeps/linux/csky/bits/wordsize.h new file mode 100644 index 0000000..1b5842a --- /dev/null +++ b/libc/sysdeps/linux/csky/bits/wordsize.h @@ -0,0 +1 @@ +#define __WORDSIZE 32 diff --git a/libc/sysdeps/linux/csky/cacheflush.c b/libc/sysdeps/linux/csky/cacheflush.c new file mode 100644 index 0000000..7762c73 --- /dev/null +++ b/libc/sysdeps/linux/csky/cacheflush.c @@ -0,0 +1,2 @@ +#include <sys/syscall.h> +_syscall3(int, cacheflush, void *, addr, int, nbytes, int, op) diff --git a/libc/sysdeps/linux/csky/clone.c b/libc/sysdeps/linux/csky/clone.c new file mode 100644 index 0000000..97c30d0 --- /dev/null +++ b/libc/sysdeps/linux/csky/clone.c @@ -0,0 +1,47 @@ +#include <stdarg.h> +#include <sysdep.h> +#include <unistd.h> + +extern int __syscall_error(int err_no); + +extern int __csky_clone ( + int flags, + void *child_stack, + pid_t *ptid, + pid_t *ctid, + void *tls); + +int __clone( + int (*fn)(void *), + void *child_stack, + int flags, + void *arg, ...) +{ + void *ptid; + void *tls; + void *ctid; + va_list al; + int err; + + va_start(al, arg); + ptid = va_arg(al, void *); + tls = va_arg(al, void *); + ctid = va_arg(al, void *); + va_end(al); + + err = EINVAL; + if (!fn) + goto err; + if (!child_stack) + goto err; + + /* prepare fn&arg in child_stack */ + child_stack = (void *)((unsigned int)child_stack - 8); + *(unsigned int *)child_stack = (unsigned int)fn; + *(unsigned int *)(child_stack + 4) = (unsigned int)arg; + + return __csky_clone(flags, child_stack, ptid, ctid, tls); +err: + return __syscall_error(-err); +} +weak_alias(__clone, clone) diff --git a/libc/sysdeps/linux/csky/crt1.S b/libc/sysdeps/linux/csky/crt1.S new file mode 100644 index 0000000..ae73843 --- /dev/null +++ b/libc/sysdeps/linux/csky/crt1.S @@ -0,0 +1,95 @@ +#include <sysdep.h> + + .text +.global _start +.type _start,%function +.global __exit +.global atexit + +.global _init +.global _fini + +.global main +.global __uClibc_main + +/* + * argc, argv and envp are on the stack + * + * Call: + * void __uClibc_main( + * int (*main)(int, char **, char **), + * int argc, + * char **argv, + * void (*app_init)(void), + * void (*app_fini)(void), + * void (*rtld_fini)(void), + * void *stack_end attribute_unused); + */ + +_start: +#ifdef __PIC__ + __GET_GB + lrw a0, main@GOT + addu a0, gb + ldw a0, (a0) + + ldw a1, (sp) + mov a2, sp + addi a2, 4 + + mov a3, sp /* push stack_end */ + subi sp, 8 + stw a3, (sp) + + lrw a3, _init@GOT + addu a3, gb + ldw a3, (a3) + +#ifdef __CSKYABIV2__ + subi sp, 8 + lrw l4, _fini@GOT + addu l4, gb + ldw l4, (l4) + stw l4, (sp) + + stw r7, (sp, 4) /* push rtld_fini */ +#else + lrw a4, _fini@GOT + addu a4, gb + ldw a4, (a4) +#endif + + lrw l4, __uClibc_main@PLT + addu l4, gb + ldw l4, (l4) + jsr l4 + +#else /* __PIC__ */ + lrw a0, main + + ldw a1, (sp) + mov a2, sp + addi a2, 4 + + mov a3, sp /* push stack_end */ + subi sp, 8 + stw a3, (sp) + + lrw a3, _init +#ifdef __CSKYABIV2__ + subi sp, 8 + lrw l4, _fini + stw l4, (sp) + stw r7, (sp, 4) +#else + lrw a4, _fini +#endif + + lrw l4, __uClibc_main + jsr l4 +#endif /* __PIC__ */ + bsr __exit +__exit: + DO_CALL(exit, 0) + br . + diff --git a/libc/sysdeps/linux/csky/crti.S b/libc/sysdeps/linux/csky/crti.S new file mode 100644 index 0000000..e85a81c --- /dev/null +++ b/libc/sysdeps/linux/csky/crti.S @@ -0,0 +1,13 @@ +#include <sysdep.h> +.file "initfini.c" + +.section .init +ENTRY(_init) + subi sp, 8 + stw lr, (sp, 4) + +.section .fini +ENTRY(_fini) + subi sp, 8 + stw lr, (sp, 4) + diff --git a/libc/sysdeps/linux/csky/crtn.S b/libc/sysdeps/linux/csky/crtn.S new file mode 100644 index 0000000..3814f30 --- /dev/null +++ b/libc/sysdeps/linux/csky/crtn.S @@ -0,0 +1,11 @@ +.file "initfini.c" + +.section .init + ldw lr, (sp, 4) + addi sp, 8 + rts + +.section .fini + ldw lr, (sp, 4) + addi sp, 8 + rts diff --git a/libc/sysdeps/linux/csky/csky_clone.S b/libc/sysdeps/linux/csky/csky_clone.S new file mode 100644 index 0000000..8360469 --- /dev/null +++ b/libc/sysdeps/linux/csky/csky_clone.S @@ -0,0 +1,20 @@ +#include <sysdep.h> + +PSEUDO_ERRVAL(__csky_clone, clone, 5) + cmpnei a0, 0 + bf start_thread + rts + +start_thread: +#ifdef __CSKYABIV2__ + subi sp, 4 +#endif + ld.w a0, (sp, 0x4) + ld.w a1, (sp, 0x0) + addi sp, 8 + jsr a1 + + DO_CALL(exit, 0) + +END(__csky_clone) + diff --git a/libc/sysdeps/linux/csky/jmpbuf-unwind.h b/libc/sysdeps/linux/csky/jmpbuf-unwind.h new file mode 100644 index 0000000..30e39f4 --- /dev/null +++ b/libc/sysdeps/linux/csky/jmpbuf-unwind.h @@ -0,0 +1,15 @@ +#include <setjmp.h> +#include <stdint.h> +#include <unwind.h> + +/* Test if longjmp to JMPBUF would unwind the frame + containing a local variable at ADDRESS. */ +#define _JMPBUF_UNWINDS(jmpbuf, address, demangle) \ + ((void *) (address) < (void *) demangle (jmpbuf[0].__sp)) + +#define _JMPBUF_CFA_UNWINDS_ADJ(_jmpbuf, _context, _adj) \ + _JMPBUF_UNWINDS_ADJ (_jmpbuf, (void *) _Unwind_GetCFA (_context), _adj) + +#define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \ + ((uintptr_t) (_address) - (_adj) < (uintptr_t) (_jmpbuf[0].__sp) - (_adj)) + diff --git a/libc/sysdeps/linux/csky/libc-read_tp.S b/libc/sysdeps/linux/csky/libc-read_tp.S new file mode 100644 index 0000000..1974cba --- /dev/null +++ b/libc/sysdeps/linux/csky/libc-read_tp.S @@ -0,0 +1 @@ +#include <ldso/ldso/csky/read_tp.S> diff --git a/libc/sysdeps/linux/csky/setjmp.S b/libc/sysdeps/linux/csky/setjmp.S new file mode 100644 index 0000000..daadcb3 --- /dev/null +++ b/libc/sysdeps/linux/csky/setjmp.S @@ -0,0 +1,43 @@ +#include <sysdep.h> + +ENTRY(setjmp) + stw sp, (a0, 0) + stw lr, (a0, 4) + + stw l0, (a0, 8) + stw l1, (a0, 12) + stw l2, (a0, 16) + stw l3, (a0, 20) + stw l4, (a0, 24) + stw l5, (a0, 28) + +#ifdef __CSKYABIV2__ + stw l6, (a0, 32) + stw l7, (a0, 36) + stw l8, (a0, 40) + stw l9, (a0, 44) + + stw r26, (a0, 48) + stw r27, (a0, 52) + stw gb, (a0, 56) + stw r29, (a0, 60) + stw r30, (a0, 64) + stw tls, (a0, 68) +#else + stw gb, (a0, 32) +#endif + + subi sp, 8 + stw lr, (sp, 0) + stw gb, (sp, 4) + __GET_GB + __JSR(__sigjmp_save) + ldw gb, (sp, 4) + ldw lr, (sp, 0) + addi sp, 8 + rts +END(setjmp) + +strong_alias(setjmp, __sigsetjmp) +strong_alias(setjmp, _setjmp) + diff --git a/libc/sysdeps/linux/csky/sys/cachectl.h b/libc/sysdeps/linux/csky/sys/cachectl.h new file mode 100644 index 0000000..0d45bf0 --- /dev/null +++ b/libc/sysdeps/linux/csky/sys/cachectl.h @@ -0,0 +1,10 @@ +#ifndef _SYS_CACHECTL_H +#define _SYS_CACHECTL_H 1 + +#include <asm/cachectl.h> + +__BEGIN_DECLS +extern int cacheflush(void *addr, int nbytes, int flags); +__END_DECLS + +#endif diff --git a/libc/sysdeps/linux/csky/sys/procfs.h b/libc/sysdeps/linux/csky/sys/procfs.h new file mode 100644 index 0000000..91c1388 --- /dev/null +++ b/libc/sysdeps/linux/csky/sys/procfs.h @@ -0,0 +1,126 @@ +/* Copyright (C) 1996, 1997, 1999, 2000, 2001 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_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/csky/sys/ucontext.h b/libc/sysdeps/linux/csky/sys/ucontext.h new file mode 100644 index 0000000..5917688 --- /dev/null +++ b/libc/sysdeps/linux/csky/sys/ucontext.h @@ -0,0 +1,17 @@ +#ifndef _SYS_UCONTEXT_H +#define _SYS_UCONTEXT_H 1 + +#include <features.h> +#include <signal.h> +#include <bits/sigcontext.h> + +typedef struct ucontext +{ + unsigned long int uc_flags; + struct ucontext * uc_link; + stack_t uc_stack; + struct sigcontext uc_mcontext; + sigset_t uc_sigmask; +} ucontext_t; + +#endif /* sys/ucontext.h */ diff --git a/libc/sysdeps/linux/csky/sys/user.h b/libc/sysdeps/linux/csky/sys/user.h new file mode 100644 index 0000000..4ab1972 --- /dev/null +++ b/libc/sysdeps/linux/csky/sys/user.h @@ -0,0 +1,48 @@ +#ifndef _SYS_USER_H +#define _SYS_USER_H 1 + +struct user_fpregs { + unsigned long fsr; /* fpu status reg */ + unsigned long fesr; /* fpu exception status reg */ + unsigned long fp[32]; /* fpu general regs */ +}; + +struct user_regs { +#if defined(__CSKYABIV2__) + unsigned long int uregs[34]; /* CSKY V2 has 32 general rgister */ +#else + unsigned long int uregs[18]; /* CSKY V1 has 16 general rgister */ +#endif +}; + +/* + * When the kernel dumps core, it starts by dumping the user struct - + * this will be used by gdb to figure out where the data and stack segments + * are within the file, and what virtual addresses to use. + */ +struct user{ +/* We start with the registers, to mimic the way that "memory" is returned + from the ptrace(3,...) function. */ + struct user_regs regs; /* Where the registers are actually stored */ + int u_fpvalid; /* True if math co-processor being used. */ + +/* The rest of this junk is to help gdb figure out what goes where */ + 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 area. + This is actually the bottom of the stack, + the top of the stack is always found in + the esp register. */ + long int signal; /* Signal that caused the core dump. */ + int reserved; /* No longer used */ + struct user_regs * u_ar0; /* Used by gdb to help find the values + for the registers. */ + unsigned long magic; /* To uniquely identify a core file */ + char u_comm[32]; /* User command that was responsible */ + struct user_fpregs u_fp; + struct user_fpregs* u_fpstate; /* Math Co-processor pointer. */ +}; + +#endif /* _SYS_USER_H */ diff --git a/libc/sysdeps/linux/csky/sysdep.h b/libc/sysdeps/linux/csky/sysdep.h new file mode 100644 index 0000000..2fcff68 --- /dev/null +++ b/libc/sysdeps/linux/csky/sysdep.h @@ -0,0 +1,204 @@ +#ifndef _LINUX_CSKY_SYSDEP_H +#define _LINUX_CSKY_SYSDEP_H 1 + +#include <common/sysdep.h> +#include <sys/syscall.h> + +#undef SYS_ify +#define SYS_ify(name) (__NR_##name) + +#ifdef __ASSEMBLER__ + +/* ELF uses byte-counts for .align, most others use log2 of count of bytes. */ +#define ALIGNARG(log2) log2 +/* For ELF we need the `.type' directive to make shared libs work right. */ +#define ASM_TYPE_DIRECTIVE(name,typearg) .type name,%##typearg; +#define ASM_SIZE_DIRECTIVE(name) .size name,.-name + +#define ENTRY(name) \ + .globl C_SYMBOL_NAME(name); \ + ASM_TYPE_DIRECTIVE (C_SYMBOL_NAME(name),function) \ + .align ALIGNARG(4); \ + C_LABEL(name) + +#undef END +#define END(name) ASM_SIZE_DIRECTIVE(name) + +#undef ret_ERRVAL +#define ret_ERRVAL rts + +#undef PSEUDO_END +#define PSEUDO_END(name) END(name) + +#ifdef __PIC__ +#define __GET_GB \ + bsr 1f; \ + 1: lrw gb, 1b@GOTPC; \ + addu gb, lr; + +/* + * __JSR must be used with __GET_GB and SAVE_ARGS + */ +#define __JSR(symbol) \ + lrw a2, symbol@PLT; \ + add a2, gb; \ + ld.w a2, (a2); \ + jsr a2; + +#define PSEUDO_ERRJMP \ + subi sp, 8; \ + st.w lr, (sp); \ + st.w gb, (sp, 4); \ + __GET_GB \ + lrw a2, __syscall_error@PLT; \ + addu a2, gb; \ + ld.w a2, (a2); \ + jsr a2; \ + ld.w lr, (sp); \ + ld.w gb, (sp, 4); \ + addi sp, 8; \ + rts; + +#else /* __PIC__ */ + +#define __GET_GB +#define __JSR(symbol) jsri symbol; +#define PSEUDO_ERRJMP \ + subi sp, 4; \ + stw lr, (sp, 0); \ + jsri __syscall_error; \ + ldw lr, (sp, 0); \ + addi sp, 4; \ + rts; + +#endif /* __PIC__ */ + +#define PSEUDO_ERRVAL(name, syscall_name, args) \ + .text; \ + 99: PSEUDO_ERRJMP; \ + ENTRY(name); \ + DO_CALL(syscall_name, args); \ + btsti a0, 31; \ + bt 99b; + +#undef PSEUDO_END_ERRVAL +#define PSEUDO_END_ERRVAL(name) \ + rts; \ + END(name) + +/* DO_CALL */ +#undef DO_CALL +#ifdef __CSKYABIV2__ + +#define DO_CALL(syscall_name, args) \ + DOARGS_##args \ + mov t0, r7; \ + lrw r7, SYS_ify (syscall_name); \ + trap 0; \ + mov r7, t0; \ + UNDOARGS_##args + +#define DOARGS_0 +#define DOARGS_1 +#define DOARGS_2 +#define DOARGS_3 +#define DOARGS_4 +#define DOARGS_5 subi sp, 4; st.w r4, (sp, 0); ld.w r4, (sp, 4); +#define DOARGS_6 subi sp, 8; stm r4-r5, (sp); ld.w r4, (sp, 8); ld.w r5, (sp, 12); + +#define UNDOARGS_0 +#define UNDOARGS_1 +#define UNDOARGS_2 +#define UNDOARGS_3 +#define UNDOARGS_4 +#define UNDOARGS_5 ld.w r4, (sp, 0); addi sp, 4; +#define UNDOARGS_6 ldm r4-r5, (sp); addi sp, 8; + +#else /* __CSKYABIV2__ */ + +#define DO_CALL(syscall_name, args) \ + lrw r1, SYS_ify (syscall_name); \ + trap 0; + +#define DOARGS_0 +#define DOARGS_1 +#define DOARGS_2 +#define DOARGS_3 +#define DOARGS_4 +#define DOARGS_5 +#define DOARGS_6 + +#define UNDOARGS_0 +#define UNDOARGS_1 +#define UNDOARGS_2 +#define UNDOARGS_3 +#define UNDOARGS_4 +#define UNDOARGS_5 +#define UNDOARGS_6 + +#endif /* __CSKYABIV2__ */ + +/* + * define DO_CALL_2, only ABIV2 need DO_CALL_2 + * to be quite different with DO_CALL, DO_CALL_2 need not save r7. + */ +#ifdef __CSKYABIV2__ +#undef DO_CALL_2 +#define DO_CALL_2(syscall_name, args) \ + DOARGS2_##args; \ + lrw r7, SYS_ify(syscall_name); \ + trap 0; \ + UNDOARGS2_##args +#undef DOARGS2_0 +#define DOARGS2_0 + +#undef DOARGS2_1 +#define DOARGS2_1 DOARGS2_0 +#undef DOARGS2_2 +#define DOARGS2_2 DOARGS2_0 +#undef DOARGS2_3 +#define DOARGS2_3 DOARGS2_0 +#undef DOARGS2_4 +#define DOARGS2_4 DOARGS2_0 +#undef DOARGS2_5 +#define DOARGS2_5 \ + subi sp, 8; \ + cfi_adjust_cfa_offset (8); \ + stw r4, (sp, 0); \ + ldw r4, (sp, 24) +#undef DOARGS2_6 +#define DOARGS2_6 \ + subi sp, 8; \ + cfi_adjust_cfa_offset (8); \ + stw r4, (sp, 0); \ + stw r5, (sp, 4); \ + ldw r4, (sp, 24); \ + ldw r5, (sp, 28) + +#undef UNDOARGS2_0 +#define UNDOARGS2_0 + +#undef UNDOARGS2_1 +#define UNDOARGS2_1 UNDOARGS2_0 +#undef UNDOARGS2_2 +#define UNDOARGS2_2 UNDOARGS2_0 +#undef UNDOARGS2_3 +#define UNDOARGS2_3 UNDOARGS2_0 +#undef UNDOARGS2_4 +#define UNDOARGS2_4 UNDOARGS2_0 +#undef UNDOARGS2_5 +#define UNDOARGS2_5 \ + ldw r4, (sp, 0); \ + addi sp, 8 + +#undef UNDOARGS2_6 +#define UNDOARGS2_6 \ + ldw r4, (sp, 0); \ + ldw r5, (sp, 4); \ + addi sp, 8 + +#endif /* __CSKYABIV2__ */ + +#endif /* __ASSEMBLER__ */ +#endif /* _LINUX_CSKY_SYSDEP_H */ + diff --git a/libc/sysdeps/linux/csky/vfork.S b/libc/sysdeps/linux/csky/vfork.S new file mode 100644 index 0000000..a28bb32 --- /dev/null +++ b/libc/sysdeps/linux/csky/vfork.S @@ -0,0 +1,6 @@ +#include <sysdep.h> +PSEUDO_ERRVAL(__vfork, vfork, 0) +PSEUDO_END_ERRVAL(__vfork) +weak_alias(__vfork, vfork) +libc_hidden_weak(vfork) + diff --git a/libpthread/nptl/sysdeps/csky/Makefile b/libpthread/nptl/sysdeps/csky/Makefile new file mode 100644 index 0000000..43dc60a --- /dev/null +++ b/libpthread/nptl/sysdeps/csky/Makefile @@ -0,0 +1,6 @@ +top_srcdir=../../../../ +top_builddir=../../../../ +all: objs +include $(top_builddir)Rules.mak +include Makefile.arch +include $(top_srcdir)Makerules diff --git a/libpthread/nptl/sysdeps/csky/Makefile.arch b/libpthread/nptl/sysdeps/csky/Makefile.arch new file mode 100644 index 0000000..0e0a5e6 --- /dev/null +++ b/libpthread/nptl/sysdeps/csky/Makefile.arch @@ -0,0 +1,7 @@ +CFLAGS-pt-raise.c = -DNOT_IN_libc -DIS_IN_libpthread + +ASFLAGS-pthread_spin_lock.S = -DNOT_IN_libc -DIS_IN_libpthread +ASFLAGS-pthread_spin_trylock.S = -DNOT_IN_libc -DIS_IN_libpthread + +libc_arch_a_CSRC = libc-tls.c + diff --git a/libpthread/nptl/sysdeps/csky/dl-tls.h b/libpthread/nptl/sysdeps/csky/dl-tls.h new file mode 100644 index 0000000..70f7e96 --- /dev/null +++ b/libpthread/nptl/sysdeps/csky/dl-tls.h @@ -0,0 +1,9 @@ +/* Type used for the representation of TLS information in the GOT. */ +typedef struct +{ + unsigned long int ti_module; + unsigned long int ti_offset; +} tls_index; + +extern void *__tls_get_addr (tls_index *ti); + diff --git a/libpthread/nptl/sysdeps/csky/libc-tls.c b/libpthread/nptl/sysdeps/csky/libc-tls.c new file mode 100644 index 0000000..ceb61f8 --- /dev/null +++ b/libpthread/nptl/sysdeps/csky/libc-tls.c @@ -0,0 +1,18 @@ +#include <sysdeps/generic/libc-tls.c> +#include <dl-tls.h> + +#if defined(USE_TLS) && USE_TLS + +/* On CSKY, linker optimizations are not required, so __tls_get_addr + can be called even in statically linked binaries. In this case module + must be always 1 and PT_TLS segment exist in the binary, otherwise it + would not link. */ + +void * +__tls_get_addr (tls_index *ti) +{ + dtv_t *dtv = THREAD_DTV (); + return (char *) dtv[1].pointer.val + ti->ti_offset; +} + +#endif diff --git a/libpthread/nptl/sysdeps/csky/pthread_spin_lock.S b/libpthread/nptl/sysdeps/csky/pthread_spin_lock.S new file mode 100644 index 0000000..da6e234 --- /dev/null +++ b/libpthread/nptl/sysdeps/csky/pthread_spin_lock.S @@ -0,0 +1,18 @@ +#include <sysdep.h> + + .text + .align 4 + +ENTRY (pthread_spin_lock) + mov a2, a0 +1: + movi a0, 0 + movi a1, 1 + trap 2 // trap 2 use to cmpxchg + cmpnei a0, 0 + bt 1b + movi a0, 0 + jmp r15 + + /* TODO */ +END (pthread_spin_lock) diff --git a/libpthread/nptl/sysdeps/csky/pthread_spin_trylock.S b/libpthread/nptl/sysdeps/csky/pthread_spin_trylock.S new file mode 100644 index 0000000..113e94d --- /dev/null +++ b/libpthread/nptl/sysdeps/csky/pthread_spin_trylock.S @@ -0,0 +1,16 @@ +#define _ERRNO_H 1 +#include <bits/errno.h> +#include <sysdep.h> + +.text +ENTRY (pthread_spin_trylock) + mov a2, a0 + movi a0, 0 + movi a1, 1 + trap 2 // trap 2 use to cmpxchg + cmpnei a0, 0 + bf 1f + movi a0, EBUSY +1: + jmp r15 +END (pthread_spin_trylock) diff --git a/libpthread/nptl/sysdeps/csky/pthreaddef.h b/libpthread/nptl/sysdeps/csky/pthreaddef.h new file mode 100644 index 0000000..da6a0fa --- /dev/null +++ b/libpthread/nptl/sysdeps/csky/pthreaddef.h @@ -0,0 +1,19 @@ +/* Default stack size. */ +#define ARCH_STACK_DEFAULT_SIZE (2 * 1024 * 1024) + +/* Required stack pointer alignment at beginning. SSE requires 16 + bytes. */ +#define STACK_ALIGN 16 + +/* Minimal stack size after allocating thread descriptor and guard size. */ +#define MINIMAL_REST_STACK 2048 + +/* Alignment requirement for TCB. */ +#define TCB_ALIGNMENT 16 + +/* Location of current stack frame. */ +#define CURRENT_STACK_FRAME __builtin_frame_address (0) + +/* XXX Until we have a better place keep the definitions here. */ +#define __exit_thread_inline(val) \ + INLINE_SYSCALL (exit, 1, (val)) diff --git a/libpthread/nptl/sysdeps/csky/tcb-offsets.sym b/libpthread/nptl/sysdeps/csky/tcb-offsets.sym new file mode 100644 index 0000000..bf9c0a1 --- /dev/null +++ b/libpthread/nptl/sysdeps/csky/tcb-offsets.sym @@ -0,0 +1,10 @@ +#include <sysdep.h> +#include <tls.h> + +-- + +-- Derive offsets relative to the thread register. +#define thread_offsetof(mem) (long)(offsetof(struct pthread, mem) - sizeof(struct pthread)) + +MULTIPLE_THREADS_OFFSET thread_offsetof (header.multiple_threads) +TID_OFFSET thread_offsetof (tid) diff --git a/libpthread/nptl/sysdeps/csky/tls.h b/libpthread/nptl/sysdeps/csky/tls.h new file mode 100644 index 0000000..721551c --- /dev/null +++ b/libpthread/nptl/sysdeps/csky/tls.h @@ -0,0 +1,170 @@ +#ifndef _TLS_H +#define _TLS_H 1 + +#ifndef __ASSEMBLER__ + +# include <stdbool.h> +# include <stddef.h> +# include <stdint.h> + +/* Type for the dtv. */ +typedef union dtv +{ + size_t counter; + struct + { + void *val; + bool is_static; + } pointer; +} dtv_t; + +#ifdef __CSKYABIV2__ +/* define r31 as thread pointer register? */ +# define READ_THREAD_POINTER() \ + ({ void *__result; \ + __asm__ __volatile__ ("mov %0, r31" \ + : "=r" (__result)); \ + __result; }) +#else +# define READ_THREAD_POINTER() \ + ({ register unsigned int __result __asm__("a0"); \ + __asm__ __volatile__ ("trap 3;" \ + : "=r" (__result) : : ); \ + __result; }) +#endif + +#else /* __ASSEMBLER__ */ +# include <tcb-offsets.h> +# ifdef __CSKYABIV2__ +/* define r31 as thread pointer register? */ +# define READ_THREAD_POINTER() \ + mov r0, r31; +# else +# define READ_THREAD_POINTER() \ + trap 3; +# endif +#endif /* __ASSEMBLER__ */ + +/* We require TLS support in the tools. */ +#define HAVE_TLS_SUPPORT 1 +#define HAVE_TLS_MODEL_ATTRIBUTE 1 +#define HAVE___THREAD 1 + +/* Signal that TLS support is available. */ +#define USE_TLS 1 + +# ifndef __ASSEMBLER__ + +/* Get system call information. */ +# include <sysdep.h> + +/* The TP points to the start of the thread blocks. */ +# define TLS_DTV_AT_TP 1 + +/* Get the thread descriptor definition. */ +# include <../../descr.h> + +typedef struct +{ + dtv_t *dtv; + void *private; +} tcbhead_t; + +/* This is the size of the initial TCB. */ +# define TLS_INIT_TCB_SIZE sizeof (tcbhead_t) + +/* Alignment requirements for the initial TCB. */ +# define TLS_INIT_TCB_ALIGN 16 + +/* This is the size of the TCB. */ +# define TLS_TCB_SIZE sizeof (tcbhead_t) + +/* Alignment requirements for the TCB. */ +# define TLS_TCB_ALIGN 16 + +/* This is the size we need before TCB. */ +# define TLS_PRE_TCB_SIZE sizeof (struct pthread) + +/* The thread pointer (in hardware register $29) points to the end of + the TCB + 0x7000, as for PowerPC. The pthread_descr structure is + immediately in front of the TCB. */ +# define TLS_TCB_OFFSET 0//0x7000 + +/* Install the dtv pointer. The pointer passed is to the element with + index -1 which contain the length. */ +# define INSTALL_DTV(tcbp, dtvp) \ + (((tcbhead_t *) (tcbp))->dtv = (dtvp) + 1) + +/* Install new dtv for current thread. */ +# define INSTALL_NEW_DTV(dtv) \ + (THREAD_DTV() = (dtv)) + +/* Return dtv of given thread descriptor. */ +# define GET_DTV(tcbp) \ + (((tcbhead_t *) (tcbp))->dtv) + +/* Code to initially initialize the thread pointer. This might need + special attention since 'errno' is not yet available and if the + operation can cause a failure 'errno' must not be touched. */ +# define TLS_INIT_TP(tcbp, secondcall) \ + ({ INTERNAL_SYSCALL_DECL (err); \ + long result_var; \ + result_var = INTERNAL_SYSCALL (set_thread_area, err, 1, \ + (char *) (tcbp) + TLS_TCB_OFFSET); \ + INTERNAL_SYSCALL_ERROR_P (result_var, err) \ + ? "unknown error" : NULL; }) + +/* Return the address of the dtv for the current thread. */ +# define THREAD_DTV() \ + (((tcbhead_t *) (READ_THREAD_POINTER () - TLS_TCB_OFFSET))->dtv) + +/* Return the thread descriptor for the current thread. */ +# undef THREAD_SELF +# define THREAD_SELF \ + ((struct pthread *) (READ_THREAD_POINTER () \ + - TLS_TCB_OFFSET - TLS_PRE_TCB_SIZE)) + +/* Magic for libthread_db to know how to do THREAD_SELF. */ +# define DB_THREAD_SELF \ + CONST_THREAD_AREA (32, sizeof (struct pthread)) + +/* Access to data in the thread descriptor is easy. */ +#define THREAD_GETMEM(descr, member) \ + descr->member +#define THREAD_GETMEM_NC(descr, member, idx) \ + descr->member[idx] +#define THREAD_SETMEM(descr, member, value) \ + descr->member = (value) +#define THREAD_SETMEM_NC(descr, member, idx, value) \ + descr->member[idx] = (value) + +/* Initializing the thread pointer will generate a SIGILL if the syscall + is not available. */ +#define TLS_INIT_TP_EXPENSIVE 1 + +/* Get and set the global scope generation counter in struct pthread. */ +#define THREAD_GSCOPE_FLAG_UNUSED 0 +#define THREAD_GSCOPE_FLAG_USED 1 +#define THREAD_GSCOPE_FLAG_WAIT 2 +#define THREAD_GSCOPE_RESET_FLAG() \ + do \ + { int __res \ + = atomic_exchange_rel (&THREAD_SELF->header.gscope_flag, \ + THREAD_GSCOPE_FLAG_UNUSED); \ + if (__res == THREAD_GSCOPE_FLAG_WAIT) \ + lll_futex_wake (&THREAD_SELF->header.gscope_flag, 1, LLL_PRIVATE); \ + } \ + while (0) +#define THREAD_GSCOPE_SET_FLAG() \ + do \ + { \ + THREAD_SELF->header.gscope_flag = THREAD_GSCOPE_FLAG_USED; \ + atomic_write_barrier (); \ + } \ + while (0) +#define THREAD_GSCOPE_WAIT() \ + GL(dl_wait_lookup_done) () + +#endif /* __ASSEMBLER__ */ + +#endif /* tls.h */ diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/csky/Makefile b/libpthread/nptl/sysdeps/unix/sysv/linux/csky/Makefile new file mode 100644 index 0000000..8679a84 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/csky/Makefile @@ -0,0 +1,6 @@ +top_srcdir=../../../../../../../ +top_builddir=../../../../../../../ +all: objs +include $(top_builddir)Rules.mak +include Makefile.arch +include $(top_srcdir)Makerules diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/csky/Makefile.arch b/libpthread/nptl/sysdeps/unix/sysv/linux/csky/Makefile.arch new file mode 100644 index 0000000..6c85eda --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/csky/Makefile.arch @@ -0,0 +1,4 @@ +libpthread_linux_arch_SSRC = +libpthread_linux_arch_CSRC = pthread_once.c + +libc_linux_arch_CSRC = fork.c diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/csky/bits/pthreadtypes.h b/libpthread/nptl/sysdeps/unix/sysv/linux/csky/bits/pthreadtypes.h new file mode 100644 index 0000000..e1b115c --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/csky/bits/pthreadtypes.h @@ -0,0 +1,181 @@ +/* Copyright (C) 2002, 2003, 2004, 2005, 2006 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 _BITS_PTHREADTYPES_H +#define _BITS_PTHREADTYPES_H 1 + +#include <endian.h> + +#define __SIZEOF_PTHREAD_ATTR_T 36 +#define __SIZEOF_PTHREAD_MUTEX_T 24 +#define __SIZEOF_PTHREAD_MUTEXATTR_T 4 +#define __SIZEOF_PTHREAD_COND_T 48 +#define __SIZEOF_PTHREAD_COND_COMPAT_T 12 +#define __SIZEOF_PTHREAD_CONDATTR_T 4 +#define __SIZEOF_PTHREAD_RWLOCK_T 32 +#define __SIZEOF_PTHREAD_RWLOCKATTR_T 8 +#define __SIZEOF_PTHREAD_BARRIER_T 20 +#define __SIZEOF_PTHREAD_BARRIERATTR_T 4 + + +/* Thread identifiers. The structure of the attribute type is not + exposed on purpose. */ +typedef unsigned long int pthread_t; + + +typedef union +{ + char __size[__SIZEOF_PTHREAD_ATTR_T]; + long int __align; +} pthread_attr_t; + + +typedef struct __pthread_internal_slist +{ + struct __pthread_internal_slist *__next; +} __pthread_slist_t; + + +/* Data structures for mutex handling. The structure of the attribute + type is not exposed on purpose. */ +typedef union +{ + struct __pthread_mutex_s + { + int __lock; + unsigned int __count; + int __owner; + /* KIND must stay at this position in the structure to maintain + binary compatibility. */ + int __kind; + unsigned int __nusers; + __extension__ union + { + int __spins; + __pthread_slist_t __list; + }; + } __data; + char __size[__SIZEOF_PTHREAD_MUTEX_T]; + long int __align; +} pthread_mutex_t; + +typedef union +{ + char __size[__SIZEOF_PTHREAD_MUTEXATTR_T]; + long int __align; +} pthread_mutexattr_t; + + +/* Data structure for conditional variable handling. The structure of + the attribute type is not exposed on purpose. */ +typedef union +{ + struct + { + int __lock; + unsigned int __futex; + __extension__ unsigned long long int __total_seq; + __extension__ unsigned long long int __wakeup_seq; + __extension__ unsigned long long int __woken_seq; + void *__mutex; + unsigned int __nwaiters; + unsigned int __broadcast_seq; + } __data; + char __size[__SIZEOF_PTHREAD_COND_T]; + __extension__ long long int __align; +} pthread_cond_t; + +typedef union +{ + char __size[__SIZEOF_PTHREAD_CONDATTR_T]; + long int __align; +} pthread_condattr_t; + + +/* Keys for thread-specific data */ +typedef unsigned int pthread_key_t; + + +/* Once-only execution */ +typedef int pthread_once_t; + + +#if defined __USE_UNIX98 || defined __USE_XOPEN2K +/* Data structure for read-write lock variable handling. The + structure of the attribute type is not exposed on purpose. */ +typedef union +{ + struct + { + int __lock; + unsigned int __nr_readers; + unsigned int __readers_wakeup; + unsigned int __writer_wakeup; + unsigned int __nr_readers_queued; + unsigned int __nr_writers_queued; +#if __BYTE_ORDER == __BIG_ENDIAN + unsigned char __pad1; + unsigned char __pad2; + unsigned char __shared; + /* FLAGS must stay at this position in the structure to maintain + binary compatibility. */ + unsigned char __flags; +#else + /* FLAGS must stay at this position in the structure to maintain + binary compatibility. */ + unsigned char __flags; + unsigned char __shared; + unsigned char __pad1; + unsigned char __pad2; +#endif + int __writer; + } __data; + char __size[__SIZEOF_PTHREAD_RWLOCK_T]; + long int __align; +} pthread_rwlock_t; + +typedef union +{ + char __size[__SIZEOF_PTHREAD_RWLOCKATTR_T]; + long int __align; +} pthread_rwlockattr_t; +#endif + + +#ifdef __USE_XOPEN2K +/* POSIX spinlock data type. */ +typedef volatile int pthread_spinlock_t; + + +/* POSIX barriers data type. The structure of the type is + deliberately not exposed. */ +typedef union +{ + char __size[__SIZEOF_PTHREAD_BARRIER_T]; + long int __align; +} pthread_barrier_t; + +typedef union +{ + char __size[__SIZEOF_PTHREAD_BARRIERATTR_T]; + int __align; +} pthread_barrierattr_t; +#endif + + +#endif /* bits/pthreadtypes.h */ diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/csky/bits/semaphore.h b/libpthread/nptl/sysdeps/unix/sysv/linux/csky/bits/semaphore.h new file mode 100644 index 0000000..dadfac2 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/csky/bits/semaphore.h @@ -0,0 +1,35 @@ +/* Copyright (C) 2002, 2005, 2007 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 _SEMAPHORE_H +# error "Never use <bits/semaphore.h> directly; include <semaphore.h> instead." +#endif + + +#define __SIZEOF_SEM_T 16 + + +/* Value returned if `sem_open' failed. */ +#define SEM_FAILED ((sem_t *) 0) + + +typedef union +{ + char __size[__SIZEOF_SEM_T]; + long int __align; +} sem_t; diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/csky/createthread.c b/libpthread/nptl/sysdeps/unix/sysv/linux/csky/createthread.c new file mode 100644 index 0000000..bad8b05 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/csky/createthread.c @@ -0,0 +1,5 @@ +/* Value passed to 'clone' for initialization of the thread register. */ +#define TLS_VALUE (pd + 1) + +/* Get the real implementation. */ +#include <sysdeps/pthread/createthread.c> diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/csky/fork.c b/libpthread/nptl/sysdeps/unix/sysv/linux/csky/fork.c new file mode 100644 index 0000000..41776f9 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/csky/fork.c @@ -0,0 +1,31 @@ +/* Copyright (C) 2005 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Phil Blundell &lt;pb(a)nexus.co.uk&gt;uk>, 2005 + + 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 <sched.h> +#include <signal.h> +#include <sysdep.h> +#include <tls.h> + + +#define ARCH_FORK() \ + INLINE_SYSCALL (clone, 5, \ + CLONE_CHILD_SETTID | CLONE_CHILD_CLEARTID | SIGCHLD, \ + NULL, NULL, &THREAD_SELF->tid, NULL) + +#include "../fork.c" diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/csky/lowlevellock.h b/libpthread/nptl/sysdeps/unix/sysv/linux/csky/lowlevellock.h new file mode 100644 index 0000000..0a56503 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/csky/lowlevellock.h @@ -0,0 +1,281 @@ +/* Copyright (C) 2005, 2006, 2007, 2008, 2009 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 _LOWLEVELLOCK_H +#define _LOWLEVELLOCK_H 1 + +#include <time.h> +#include <sys/param.h> +#include <bits/pthreadtypes.h> +#include <atomic.h> +#include <sysdep.h> +#include <bits/kernel-features.h> + +#define FUTEX_WAIT 0 +#define FUTEX_WAKE 1 +#define FUTEX_REQUEUE 3 +#define FUTEX_CMP_REQUEUE 4 +#define FUTEX_WAKE_OP 5 +#define FUTEX_OP_CLEAR_WAKE_IF_GT_ONE ((4 << 24) | 1) +#define FUTEX_LOCK_PI 6 +#define FUTEX_UNLOCK_PI 7 +#define FUTEX_TRYLOCK_PI 8 +#define FUTEX_WAIT_BITSET 9 +#define FUTEX_WAKE_BITSET 10 +#define FUTEX_PRIVATE_FLAG 128 +#define FUTEX_CLOCK_REALTIME 256 + +#define FUTEX_BITSET_MATCH_ANY 0xffffffff + +/* Values for 'private' parameter of locking macros. Yes, the + definition seems to be backwards. But it is not. The bit will be + reversed before passing to the system call. */ +#define LLL_PRIVATE 0 +#define LLL_SHARED FUTEX_PRIVATE_FLAG + + +#if !defined NOT_IN_libc || defined IS_IN_rtld +/* In libc.so or ld.so all futexes are private. */ +# ifdef __ASSUME_PRIVATE_FUTEX +# define __lll_private_flag(fl, private) \ + ((fl) | FUTEX_PRIVATE_FLAG) +# else +# define __lll_private_flag(fl, private) \ + ((fl) | THREAD_GETMEM (THREAD_SELF, header.private_futex)) +# endif +#else +# ifdef __ASSUME_PRIVATE_FUTEX +# define __lll_private_flag(fl, private) \ + (((fl) | FUTEX_PRIVATE_FLAG) ^ (private)) +# else +# define __lll_private_flag(fl, private) \ + (__builtin_constant_p (private) \ + ? ((private) == 0 \ + ? ((fl) | THREAD_GETMEM (THREAD_SELF, header.private_futex)) \ + : (fl)) \ + : ((fl) | (((private) ^ FUTEX_PRIVATE_FLAG) \ + & THREAD_GETMEM (THREAD_SELF, header.private_futex)))) +# endif +#endif + +#define lll_futex_wait(futexp, val, private) \ + lll_futex_timed_wait(futexp, val, NULL, private) + +#define lll_futex_timed_wait(futexp, val, timespec, private) \ + ({ \ + INTERNAL_SYSCALL_DECL (__err); \ + long int __ret; \ + __ret = INTERNAL_SYSCALL (futex, __err, 4, (futexp), \ + __lll_private_flag (FUTEX_WAIT, private), \ + (val), (timespec)); \ + __ret; \ + }) + +#define lll_futex_wake(futexp, nr, private) \ + ({ \ + INTERNAL_SYSCALL_DECL (__err); \ + long int __ret; \ + __ret = INTERNAL_SYSCALL (futex, __err, 4, (futexp), \ + __lll_private_flag (FUTEX_WAKE, private), \ + (nr), 0); \ + __ret; \ + }) + +#define lll_robust_dead(futexv, private) \ + do \ + { \ + int *__futexp = &(futexv); \ + atomic_or (__futexp, FUTEX_OWNER_DIED); \ + lll_futex_wake (__futexp, 1, private); \ + } \ + while (0) + +/* Returns non-zero if error happened, zero if success. */ +#define lll_futex_requeue(futexp, nr_wake, nr_move, mutex, val, private) \ + ({ \ + INTERNAL_SYSCALL_DECL (__err); \ + long int __ret; \ + __ret = INTERNAL_SYSCALL (futex, __err, 6, (futexp), \ + __lll_private_flag (FUTEX_CMP_REQUEUE, private),\ + (nr_wake), (nr_move), (mutex), (val)); \ + INTERNAL_SYSCALL_ERROR_P (__ret, __err); \ + }) + + +/* Returns non-zero if error happened, zero if success. */ +#define lll_futex_wake_unlock(futexp, nr_wake, nr_wake2, futexp2, private) \ + ({ \ + INTERNAL_SYSCALL_DECL (__err); \ + long int __ret; \ + __ret = INTERNAL_SYSCALL (futex, __err, 6, (futexp), \ + __lll_private_flag (FUTEX_WAKE_OP, private), \ + (nr_wake), (nr_wake2), (futexp2), \ + FUTEX_OP_CLEAR_WAKE_IF_GT_ONE); \ + INTERNAL_SYSCALL_ERROR_P (__ret, __err); \ + }) + + +#define lll_trylock(lock) \ + atomic_compare_and_exchange_val_acq(&(lock), 1, 0) + +#define lll_cond_trylock(lock) \ + atomic_compare_and_exchange_val_acq(&(lock), 2, 0) + +#define __lll_robust_trylock(futex, id) \ + (atomic_compare_and_exchange_val_acq (futex, id, 0) != 0) +#define lll_robust_trylock(lock, id) \ + __lll_robust_trylock (&(lock), id) + +extern void __lll_lock_wait_private (int *futex) attribute_hidden; +extern void __lll_lock_wait (int *futex, int private) attribute_hidden; +extern int __lll_robust_lock_wait (int *futex, int private) attribute_hidden; + +#define __lll_lock(futex, private) \ + ((void) ({ \ + int *__futex = (futex); \ + if (__builtin_expect (atomic_compare_and_exchange_val_acq (__futex, \ + 1, 0), 0)) \ + { \ + if (__builtin_constant_p (private) && (private) == LLL_PRIVATE) \ + __lll_lock_wait_private (__futex); \ + else \ + __lll_lock_wait (__futex, private); \ + } \ + })) +#define lll_lock(futex, private) __lll_lock (&(futex), private) + + +#define __lll_robust_lock(futex, id, private) \ + ({ \ + int *__futex = (futex); \ + int __val = 0; \ + \ + if (__builtin_expect (atomic_compare_and_exchange_bool_acq (__futex, id, \ + 0), 0)) \ + __val = __lll_robust_lock_wait (__futex, private); \ + __val; \ + }) +#define lll_robust_lock(futex, id, private) \ + __lll_robust_lock (&(futex), id, private) + + +#define __lll_cond_lock(futex, private) \ + ((void) ({ \ + int *__futex = (futex); \ + if (__builtin_expect (atomic_exchange_acq (__futex, 2), 0)) \ + __lll_lock_wait (__futex, private); \ + })) +#define lll_cond_lock(futex, private) __lll_cond_lock (&(futex), private) + + +#define lll_robust_cond_lock(futex, id, private) \ + __lll_robust_lock (&(futex), (id) | FUTEX_WAITERS, private) + + +extern int __lll_timedlock_wait (int *futex, const struct timespec *, + int private) attribute_hidden; +extern int __lll_robust_timedlock_wait (int *futex, const struct timespec *, + int private) attribute_hidden; + +#define __lll_timedlock(futex, abstime, private) \ + ({ \ + int *__futex = (futex); \ + int __val = 0; \ + \ + if (__builtin_expect (atomic_exchange_acq (__futex, 1), 0)) \ + __val = __lll_timedlock_wait (__futex, abstime, private); \ + __val; \ + }) +#define lll_timedlock(futex, abstime, private) \ + __lll_timedlock (&(futex), abstime, private) + + +#define __lll_robust_timedlock(futex, abstime, id, private) \ + ({ \ + int *__futex = (futex); \ + int __val = 0; \ + \ + if (__builtin_expect (atomic_compare_and_exchange_bool_acq (__futex, id, \ + 0), 0)) \ + __val = __lll_robust_timedlock_wait (__futex, abstime, private); \ + __val; \ + }) +#define lll_robust_timedlock(futex, abstime, id, private) \ + __lll_robust_timedlock (&(futex), abstime, id, private) + + +#define __lll_unlock(futex, private) \ + (void) \ + ({ int *__futex = (futex); \ + int __oldval = atomic_exchange_rel (__futex, 0); \ + if (__builtin_expect (__oldval > 1, 0)) \ + lll_futex_wake (__futex, 1, private); \ + }) +#define lll_unlock(futex, private) __lll_unlock(&(futex), private) + + +#define __lll_robust_unlock(futex, private) \ + (void) \ + ({ int *__futex = (futex); \ + int __oldval = atomic_exchange_rel (__futex, 0); \ + if (__builtin_expect (__oldval & FUTEX_WAITERS, 0)) \ + lll_futex_wake (__futex, 1, private); \ + }) +#define lll_robust_unlock(futex, private) \ + __lll_robust_unlock(&(futex), private) + + +#define lll_islocked(futex) \ + (futex != 0) + + +/* Our internal lock implementation is identical to the binary-compatible + mutex implementation. */ + +/* Initializers for lock. */ +#define LLL_LOCK_INITIALIZER (0) +#define LLL_LOCK_INITIALIZER_LOCKED (1) + +/* The states of a lock are: + 0 - untaken + 1 - taken by one user + >1 - taken by more users */ + +/* The kernel notifies a process which uses CLONE_CLEARTID via futex + wakeup when the clone terminates. The memory location contains the + thread ID while the clone is running and is reset to zero + afterwards. */ +#define lll_wait_tid(tid) \ + do { \ + __typeof (tid) __tid; \ + while ((__tid = (tid)) != 0) \ + lll_futex_wait (&(tid), __tid, LLL_SHARED);\ + } while (0) + +extern int __lll_timedwait_tid (int *, const struct timespec *) + attribute_hidden; + +#define lll_timedwait_tid(tid, abstime) \ + ({ \ + int __res = 0; \ + if ((tid) != 0) \ + __res = __lll_timedwait_tid (&(tid), (abstime)); \ + __res; \ + }) + +#endif /* lowlevellock.h */ diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/csky/pthread_once.c b/libpthread/nptl/sysdeps/unix/sysv/linux/csky/pthread_once.c new file mode 100644 index 0000000..e977a7d --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/csky/pthread_once.c @@ -0,0 +1,100 @@ +/* Copyright (C) 2004, 2005 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. */ + +#include "pthreadP.h" +#include <lowlevellock.h> + +unsigned long int __fork_generation attribute_hidden; + +static void +clear_once_control (void *arg) +{ + pthread_once_t *once_control = (pthread_once_t *) arg; + + *once_control = 0; + lll_futex_wake (once_control, INT_MAX, LLL_PRIVATE); +} + +int +attribute_protected +__pthread_once (pthread_once_t *once_control, void (*init_routine) (void)) +{ + for (;;) + { + int oldval; + int newval; + + /* Pseudo code: + newval = __fork_generation | 1; + oldval = *once_control; + if ((oldval & 2) == 0) + *once_control = newval; + Do this atomically. + */ + do + { + newval = __fork_generation | 1; + oldval = *once_control; + if (oldval & 2) + break; + } while (atomic_compare_and_exchange_val_acq (once_control, newval, oldval) != oldval); + + /* Check if the initializer has already been done. */ + if ((oldval & 2) != 0) + return 0; + + /* Check if another thread already runs the initializer. */ + if ((oldval & 1) == 0) + break; + + /* Check whether the initializer execution was interrupted by a fork. */ + if (oldval != newval) + break; + + /* Same generation, some other thread was faster. Wait. */ + lll_futex_wait (once_control, oldval, LLL_PRIVATE); + } + + /* This thread is the first here. Do the initialization. + Register a cleanup handler so that in case the thread gets + interrupted the initialization can be restarted. */ + pthread_cleanup_push (clear_once_control, once_control); + + init_routine (); + + pthread_cleanup_pop (0); + + /* Say that the initialisation is done. */ + *once_control = __fork_generation | 2; + + /* Wake up all other threads. */ + lll_futex_wake (once_control, INT_MAX, LLL_PRIVATE); + + return 0; +} +weak_alias (__pthread_once, pthread_once) +strong_alias (__pthread_once, __pthread_once_internal) + +#if defined(__USING_SJLJ_EXCEPTIONS__) && !defined(__PIC__) +/* When statically linked, if pthread_create is used, this file + will be brought in. The exception handling code in GCC assumes + that if pthread_create is available, so are these. */ +const void *include_pthread_getspecific attribute_hidden = pthread_getspecific; +const void *include_pthread_setspecific attribute_hidden = pthread_setspecific; +const void *include_pthread_key_create attribute_hidden = pthread_key_create; +#endif diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/csky/sysdep-cancel.h b/libpthread/nptl/sysdeps/unix/sysv/linux/csky/sysdep-cancel.h new file mode 100644 index 0000000..34c43b0 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/csky/sysdep-cancel.h @@ -0,0 +1,33 @@ +#include <sysdep.h> +#include <tls.h> +#ifndef __ASSEMBLER__ +#include <pthreadP.h> +#endif + +#if !defined NOT_IN_libc || defined IS_IN_libpthread || defined IS_IN_librt + +# ifdef IS_IN_libpthread +# define __local_multiple_threads __pthread_multiple_threads +# elif !defined NOT_IN_libc +# define __local_multiple_threads __libc_multiple_threads +# endif + +# if defined IS_IN_libpthread || !defined NOT_IN_libc +extern int __local_multiple_threads attribute_hidden; +# define SINGLE_THREAD_P __builtin_expect (__local_multiple_threads == 0, 1) +# else +# define SINGLE_THREAD_P \ + __builtin_expect (THREAD_GETMEM (THREAD_SELF, \ + header.multiple_threads) == 0, 1) +# endif + +#else + +# define SINGLE_THREAD_P 1 +# define NO_CANCELLATION 1 + +#endif + +#define RTLD_SINGLE_THREAD_P \ + __builtin_expect (THREAD_GETMEM (THREAD_SELF, \ + header.multiple_threads) == 0, 1) -- 2.7.4