This is an automated email from the git hooks/post-receive script. It was generated because a ref change was pushed to the repository containing the project "uClibc-ng - small C library for embedded systems". The branch, upstream has been updated via f1f98784e65ce9621a570af50998b1940e7fb81d (commit) via 6173ee4f61b1c7a9c2c670952f9a18345e614c90 (commit) via e71fc570caec4f2d4bbe729dfe9eb41bfe5a732a (commit) via 298f58e073b2782bd264edea969769b7b5e7cf41 (commit) via 7c78a5c52b2db6bb0d6e163b38897a003a289958 (commit) via 8e04c064c4cb39bae5e5bec166c762d2fc88cb11 (commit) via 9058b43530b6be9146ea3448e8a5f642c09a1818 (commit) from c78cc48514723c9182a4fb5baa35bd59b8485cc7 (commit) Those revisions listed above that are new to this repository have not appeared on any other notification email; so we list those revisions in full, below. - Log ----------------------------------------------------------------- commit f1f98784e65ce9621a570af50998b1940e7fb81d Author: Alexey Brodkin <abrodkin@synopsys.com> Date: Wed Apr 22 09:31:38 2015 +0530 ARC: enable more options to satisfy build requirements of applications As reported by Buildroot autobuilder following options were missing: * Libutil stub (UCLIBC_HAS_LIBUTIL option) http://autobuild.buildroot.org/results/ce3/ce39eb9b9ece0968563641fb2207099d1... * Program_invocation_name (UCLIBC_HAS_PROGRAM_INVOCATION_NAME=y) http://autobuild.buildroot.org/results/154/1546d909e606daefd41b87dece94d642c... http://autobuild.buildroot.org/results/bd5/bd54581d7b0cc73bc501072d27e870a44... * Ifaddrd support (UCLIBC_SUPPORT_AI_ADDRCONFIG=y) http://autobuild.buildroot.org/results/134/134e78ef1fa87f7fbf26c23ec5dfc6878... * Libnsl (UCLIBC_HAS_LIBNSL_STUB=y) http://autobuild.buildroot.net/results/331/331ed781b422448205fb9e7c9730ec0c4... http://autobuild.buildroot.net/results/402/402d64965ac7ac6e1d4e1990080394958... http://autobuild.buildroot.net/results/960/9605bac2972d3e3d3fb91947ae6921e89... http://autobuild.buildroot.net/results/6b6/6b61ea80a3a6dcead233c4b408eba8b8d... * UTMP got reworked recently, which breaks packages such as busybox, gdbserver etc so enable that too Enabling mentioned options to make sure more packages could be built with ARC pre-built uClibc tools. Note UCLIBC_USE_NETLINK is a prerequisite for UCLIBC_SUPPORT_AI_ADDRCONFIG. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Cc: Anton Kolesov <akolesov@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com> commit 6173ee4f61b1c7a9c2c670952f9a18345e614c90 Author: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com> Date: Sat Apr 18 22:57:45 2015 +0200 buildsys: pregen depends on xlocale since ae9e3f46 sched.h pulls in stdlib.h (for malloc() and free()) and thus also xlocale.. Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com> commit e71fc570caec4f2d4bbe729dfe9eb41bfe5a732a Author: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com> Date: Sat Apr 18 22:41:46 2015 +0200 arm: Add BX and BXC macros Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com> commit 298f58e073b2782bd264edea969769b7b5e7cf41 Author: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com> Date: Sat Apr 18 22:38:29 2015 +0200 arm: Fix POP_RET for armv4t && interworking It seems the condition was reversed which lead to e.g. arm-920t being confused Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com> commit 7c78a5c52b2db6bb0d6e163b38897a003a289958 Author: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com> Date: Sat Apr 18 21:37:30 2015 +0200 NPTL: Rename a variable There seems to be a bug in gold with static TLS at least on x86_64 (?) Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com> commit 8e04c064c4cb39bae5e5bec166c762d2fc88cb11 Author: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com> Date: Sat Apr 18 21:36:26 2015 +0200 ldso: PRELINK: Remove surplus newline in early debugging code Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com> commit 9058b43530b6be9146ea3448e8a5f642c09a1818 Author: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com> Date: Sat Apr 18 20:24:44 2015 +0200 buildsys: try to merge all constants Saves a couple of bytes Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com> ----------------------------------------------------------------------- Summary of changes: Rules.mak | 2 ++ extra/Configs/defconfigs/arc/arcv2_defconfig | 6 +++++ extra/Configs/defconfigs/arc/defconfig | 6 +++++ extra/locale/Makefile.in | 4 +-- include/libc-symbols.h | 2 +- ldso/include/ldsodefs.h | 2 ++ ldso/ldso/arm/dl-startup.h | 12 ++------- ldso/ldso/arm/resolve.S | 18 +++++--------- ldso/ldso/dl-tls.c | 9 +++++-- ldso/ldso/ldso.c | 3 ++- libc/misc/pthread/tsd.c | 11 +++++++-- libc/string/arm/_memcpy.S | 18 +++----------- libc/string/arm/memcmp.S | 12 ++------- libc/string/arm/memset.S | 13 ++-------- libc/string/arm/strcmp.S | 6 +---- libc/string/arm/strlen.S | 7 +----- libc/sysdeps/linux/arm/__longjmp.S | 7 +----- libc/sysdeps/linux/arm/bits/arm_asm.h | 12 ++++----- libc/sysdeps/linux/arm/bits/arm_bx.h | 12 ++++++--- libc/sysdeps/linux/arm/bits/uClibc_arch_features.h | 26 ++++++++++++++++++++ libc/sysdeps/linux/arm/clone.S | 6 +---- libc/sysdeps/linux/arm/mmap64.S | 6 +---- libc/sysdeps/linux/arm/syscall-eabi.S | 8 ++---- libc/sysdeps/linux/arm/sysdep.h | 14 +++-------- libc/sysdeps/linux/arm/vfork.S | 12 ++------- 25 files changed, 105 insertions(+), 129 deletions(-) diff --git a/Rules.mak b/Rules.mak index 71ceb90..aa2e3a7 100644 --- a/Rules.mak +++ b/Rules.mak @@ -296,6 +296,8 @@ CPU_CFLAGS-y := -funsigned-char -fno-builtin $(eval $(call check-gcc-var,-fno-asm)) CPU_CFLAGS-y += $(CFLAG_-fno-asm) +$(eval $(call check-gcc-var,-fmerge-all-constants)) +CPU_CFLAGS-y += $(CFLAG_-fmerge-all-constants) LDADD_LIBFLOAT= ifeq ($(UCLIBC_HAS_SOFT_FLOAT),y) diff --git a/extra/Configs/defconfigs/arc/arcv2_defconfig b/extra/Configs/defconfigs/arc/arcv2_defconfig index 7c4694e..1e204aa 100644 --- a/extra/Configs/defconfigs/arc/arcv2_defconfig +++ b/extra/Configs/defconfigs/arc/arcv2_defconfig @@ -10,16 +10,22 @@ LDSO_RUNPATH=y UCLIBC_HAS_THREADS_NATIVE=y PTHREADS_DEBUG_SUPPORT=y UCLIBC_HAS_OBSTACK=y +UCLIBC_HAS_UTMPX=y +UCLIBC_HAS_UTMP=y UCLIBC_SUSV2_LEGACY=y UCLIBC_SUSV3_LEGACY=y UCLIBC_SUSV4_LEGACY=y UCLIBC_HAS_PROGRAM_INVOCATION_NAME=y +UCLIBC_HAS_LIBUTIL=y UCLIBC_HAS_OBSOLETE_BSD_SIGNAL=y UCLIBC_SV4_DEPRECATED=y UCLIBC_HAS_RPC=y UCLIBC_HAS_FULL_RPC=y +UCLIBC_USE_NETLINK=y +UCLIBC_SUPPORT_AI_ADDRCONFIG=y UCLIBC_HAS_RESOLVER_SUPPORT=y UCLIBC_HAS_LIBRESOLV_STUB=y +UCLIBC_HAS_LIBNSL_STUB=y UCLIBC_HAS_LOCALE=y UCLIBC_HAS_GLIBC_CUSTOM_STREAMS=y UCLIBC_HAS_NFTW=y diff --git a/extra/Configs/defconfigs/arc/defconfig b/extra/Configs/defconfigs/arc/defconfig index eebb115..994abeb 100644 --- a/extra/Configs/defconfigs/arc/defconfig +++ b/extra/Configs/defconfigs/arc/defconfig @@ -9,16 +9,22 @@ LDSO_RUNPATH=y UCLIBC_HAS_THREADS_NATIVE=y PTHREADS_DEBUG_SUPPORT=y UCLIBC_HAS_OBSTACK=y +UCLIBC_HAS_UTMPX=y +UCLIBC_HAS_UTMP=y UCLIBC_SUSV2_LEGACY=y UCLIBC_SUSV3_LEGACY=y UCLIBC_SUSV4_LEGACY=y UCLIBC_HAS_PROGRAM_INVOCATION_NAME=y +UCLIBC_HAS_LIBUTIL=y UCLIBC_HAS_OBSOLETE_BSD_SIGNAL=y UCLIBC_SV4_DEPRECATED=y UCLIBC_HAS_RPC=y UCLIBC_HAS_FULL_RPC=y +UCLIBC_USE_NETLINK=y +UCLIBC_SUPPORT_AI_ADDRCONFIG=y UCLIBC_HAS_RESOLVER_SUPPORT=y UCLIBC_HAS_LIBRESOLV_STUB=y +UCLIBC_HAS_LIBNSL_STUB=y UCLIBC_HAS_LOCALE=y UCLIBC_HAS_GLIBC_CUSTOM_STREAMS=y UCLIBC_HAS_NFTW=y diff --git a/extra/locale/Makefile.in b/extra/locale/Makefile.in index 3834c5c..1a2305b 100644 --- a/extra/locale/Makefile.in +++ b/extra/locale/Makefile.in @@ -46,7 +46,7 @@ locale_OBJ := $(locale_OUT)/locale_data.o CFLAGS-locale_data.c := -D__WCHAR_ENABLED -I$(locale_OUT) -I$(locale_DIR) -#headers-$(UCLIBC_HAS_LOCALE) += $(locale_headers-y) +headers_dep += $(locale_headers-y) headers: $(locale_headers-y) libc-$(UCLIBC_HAS_LOCALE) += $(locale_OBJ) @@ -68,7 +68,7 @@ $(locale_OUT)%.s: $(locale_OUT)%.S FORCE ; $(compile.s) $(locale_OUT)%.dep: -locale_headers: headers $(top_builddir)include/bits/uClibc_locale_data.h +locale_headers: $(top_builddir)include/bits/uClibc_locale_data.h # make sure that the host system has locales (this check is ok for uClibc/glibc) # we do not know though which locales were really enabled for libc at build time diff --git a/include/libc-symbols.h b/include/libc-symbols.h index a87cde6..97463ac 100644 --- a/include/libc-symbols.h +++ b/include/libc-symbols.h @@ -111,7 +111,7 @@ /* Indirect stringification. Doing two levels allows * the parameter to be a macro itself. */ -#define __stringify_1(x) #x +#define __stringify_1(x...) #x #define __stringify(x) __stringify_1(x) #ifdef __UCLIBC_HAVE_ASM_SET_DIRECTIVE__ diff --git a/ldso/include/ldsodefs.h b/ldso/include/ldsodefs.h index 4063d00..0feed89 100644 --- a/ldso/include/ldsodefs.h +++ b/ldso/include/ldsodefs.h @@ -106,7 +106,9 @@ EXTERN size_t _dl_tls_static_used; /* Alignment requirement of the static TLS block. */ EXTERN size_t _dl_tls_static_align; /* Function pointer for catching TLS errors. */ +#if 1 /* def _LIBC_REENTRANT */ EXTERN void **(*_dl_error_catch_tsd) (void) __attribute__ ((const)); +#endif /* Number of additional entries in the slotinfo array of each slotinfo list element. A large number makes it almost certain take we never diff --git a/ldso/ldso/arm/dl-startup.h b/ldso/ldso/arm/dl-startup.h index df2c824..eb2a9a2 100644 --- a/ldso/ldso/arm/dl-startup.h +++ b/ldso/ldso/arm/dl-startup.h @@ -47,11 +47,7 @@ __asm__( " ldr r0, .L_FINI_PROC\n" " ldr r0, [sl, r0]\n" " @ jump to the user_s entry point\n" -#if defined(__USE_BX__) - " bx r6\n" -#else - " mov pc, r6\n" -#endif + " " __stringify(BX(r6)) "\n" ".L_GET_GOT:\n" " .word _GLOBAL_OFFSET_TABLE_ - .L_GOT_GOT - 4\n" ".L_SKIP_ARGS:\n" @@ -113,11 +109,7 @@ __asm__( " ldr r0, .L_FINI_PROC\n" " ldr r0, [r7, r0]\n" " @ jump to the user_s entry point\n" -#if defined(__USE_BX__) - " bx r6\n" -#else - " mov pc, r6\n" -#endif + " " __stringify(BX(r6)) "\n" "\n\n" ".L_GET_GOT:\n" " .word _GLOBAL_OFFSET_TABLE_ - .L_GOT_GOT - 4\n" diff --git a/ldso/ldso/arm/resolve.S b/ldso/ldso/arm/resolve.S index c1caf9a..7e0058e 100644 --- a/ldso/ldso/arm/resolve.S +++ b/ldso/ldso/arm/resolve.S @@ -90,12 +90,10 @@ * dl-startup.c). */ -#include <sys/syscall.h> +#include <features.h> #include <bits/arm_asm.h> #include <bits/arm_bx.h> -#include <features.h> - #define sl r10 #define fp r11 #define ip r12 @@ -114,8 +112,8 @@ _dl_linux_resolve: @ function must branch to the real function, and that expects @ r0-r3 and lr to be as they were before the whole PLT stuff - @ ip can be trashed. - @ This routine is called after pushing lr, so we must push an odd - @ number of words to keep the stack correctly aligned. + @ This routine is called after pushing lr, so we must push an odd + @ number of words to keep the stack correctly aligned. stmdb sp!, {r0, r1, r2, r3, r4} ldr r0, [lr, #-4] @ r0 : = [lr-4] (GOT_TABLE[1]) @@ -124,16 +122,12 @@ _dl_linux_resolve: @ ~x = -x-1, therefore ~(r1>>2) = (-((lr-ip)>>2)-1) @ = - ((lr-ip)/4) - 1 = (ip - lr - 4)/4, as required - bl _dl_linux_resolver + bl _dl_linux_resolver - mov ip, r0 + mov ip, r0 ldmia sp!, {r0, r1, r2, r3, r4, lr} -#if defined(__USE_BX__) - bx ip -#else - mov pc,ip -#endif + BX(ip) #else @ In the thumb case _dl_linux_resolver is thumb. If a bl is used @ from arm code the linker will insert a stub call which, with diff --git a/ldso/ldso/dl-tls.c b/ldso/ldso/dl-tls.c index 6679693..05193a8 100644 --- a/ldso/ldso/dl-tls.c +++ b/ldso/ldso/dl-tls.c @@ -950,8 +950,13 @@ static bool tls_init_tp_called; void ** __attribute__ ((const)) _dl_initial_error_catch_tsd (void) { - static void *data; - return &data; + static +#if 0 /* def ARCH_NEEDS_BOOTSTRAP_RELOCS */ + /* If we have to do bootstrap relocs anyway we might as well */ + __thread +# endif + void *__tsd_data; + return &__tsd_data; } #ifdef SHARED diff --git a/ldso/ldso/ldso.c b/ldso/ldso/ldso.c index 5619629..f38f9e3 100644 --- a/ldso/ldso/ldso.c +++ b/ldso/ldso/ldso.c @@ -1196,6 +1196,7 @@ of this helper program; chances are you did not intend to run this program.\n\ } #endif #ifdef __UCLIBC_HAS_SSP__ + _dl_debug_early("Setting up SSP guards\n"); /* Set up the stack checker's canary. */ stack_chk_guard = _dl_setup_stack_chk_guard (); # ifdef THREAD_SET_STACK_GUARD @@ -1268,7 +1269,7 @@ of this helper program; chances are you did not intend to run this program.\n\ } - _dl_debug_early ("\nprelink checking: %s\n", prelinked ? "ok" : "failed"); + _dl_debug_early ("prelink checking: %s\n", prelinked ? "ok" : "failed"); if (prelinked) { if (_dl_loaded_modules->dynamic_info[DT_GNU_CONFLICT_IDX]) { diff --git a/libc/misc/pthread/tsd.c b/libc/misc/pthread/tsd.c index 586ead3..3598b89 100644 --- a/libc/misc/pthread/tsd.c +++ b/libc/misc/pthread/tsd.c @@ -1,11 +1,18 @@ +/* + * Copyright (C) 2006 by Steven J. Hill <sjhill@realitydiluted.com> + * + * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball. + */ /* libpthread sets _dl_error_catch_tsd to point to this function. We define it here instead of in libpthread so that it doesn't need to have a TLS segment of its own just for this one pointer. */ +#include <features.h> + void **__libc_dl_error_tsd(void) __attribute__ ((const)); void ** __attribute__ ((const)) __libc_dl_error_tsd (void) { - static __thread void *data __attribute__ ((tls_model ("initial-exec"))); - return &data; + static __thread void *__tsd_data attribute_tls_model_ie; + return &__tsd_data; } diff --git a/libc/string/arm/_memcpy.S b/libc/string/arm/_memcpy.S index c59f5b8..2999e8e 100644 --- a/libc/string/arm/_memcpy.S +++ b/libc/string/arm/_memcpy.S @@ -111,11 +111,7 @@ _memcpy: bcc .Lmemcpy_backwards IT(t, eq) /* Quick abort for src=dst */ -#if defined(__USE_BX__) - bxeq lr -#else - moveq pc, lr -#endif + BXC(eq, lr) stmdb sp!, {r0, lr} /* memcpy() returns dest addr */ subs r2, r2, #4 blt .Lmemcpy_fl4 /* less than 4 bytes */ @@ -455,11 +451,7 @@ _memcpy: /* less than 4 bytes to go */ adds r2, r2, #4 IT(t, eq) -#if defined(__USE_BX__) - bxeq lr -#else - moveq pc, lr /* done */ -#endif + BXC(eq, lr) /* done */ /* copy the crud byte at a time */ cmp r2, #2 ldrb r3, [r1, #-1]! @@ -477,11 +469,7 @@ _memcpy: ldrgtb r3, [r1, #-1]! strgtb r3, [r0, #-1]! #endif -#if defined(__USE_BX__) - bx lr -#else - mov pc, lr -#endif + BX(lr) /* erg - unaligned destination */ .Lmemcpy_bdestul: cmp r12, #2 diff --git a/libc/string/arm/memcmp.S b/libc/string/arm/memcmp.S index 9f78415..5b9473c 100644 --- a/libc/string/arm/memcmp.S +++ b/libc/string/arm/memcmp.S @@ -67,11 +67,7 @@ memcmp: subs r2, r2, #1 IT(tt, mi) movmi r0, #0 -#if defined(__USE_BX__) - bxmi lr -#else - movmi pc, lr -#endif + BXC(mi, lr) /* ip == last src address to compare */ add ip, r0, r2 1: @@ -82,11 +78,7 @@ memcmp: cmpcs r2, r3 beq 1b sub r0, r2, r3 -#if defined(__USE_BX__) - bx lr -#else - mov pc, lr -#endif + BX(lr) #endif .size memcmp,.-memcmp diff --git a/libc/string/arm/memset.S b/libc/string/arm/memset.S index 8ddc47e..2be4850 100644 --- a/libc/string/arm/memset.S +++ b/libc/string/arm/memset.S @@ -17,7 +17,6 @@ <http://www.gnu.org/licenses/>. */ #include <features.h> -#include <sys/syscall.h> #include <bits/arm_asm.h> #include <bits/arm_bx.h> @@ -109,11 +108,7 @@ memset: 2: movs a3, a3 @ anything left? IT(t, eq) -#if defined(__USE_BX__) - bxeq lr -#else - moveq pc, lr @ nope -#endif + BXC(eq, lr) @ nope #if defined (__thumb2__) 1: strb a2, [a4], #1 @@ -131,11 +126,7 @@ memset: strb a2, [a4], $1 strb a2, [a4], $1 strb a2, [a4], $1 -#if defined(__USE_BX__) - bx lr -#else - mov pc, lr -#endif + BX(lr) #endif #endif diff --git a/libc/string/arm/strcmp.S b/libc/string/arm/strcmp.S index 8b77ab0..81416a9 100644 --- a/libc/string/arm/strcmp.S +++ b/libc/string/arm/strcmp.S @@ -63,11 +63,7 @@ strcmp: cmpcs r2, r3 beq 1b sub r0, r2, r3 -#if defined(__USE_BX__) - bx lr -#else - mov pc, lr -#endif + BX(lr) #endif .size strcmp,.-strcmp diff --git a/libc/string/arm/strlen.S b/libc/string/arm/strlen.S index 0e7737e..9995d76 100644 --- a/libc/string/arm/strlen.S +++ b/libc/string/arm/strlen.S @@ -18,7 +18,6 @@ #include <features.h> #include <endian.h> -#include <sys/syscall.h> #include <bits/arm_asm.h> #include <bits/arm_bx.h> @@ -99,11 +98,7 @@ Llastword: @ drop through to here once we find a IT(t, ne) addne r0, r0, $1 @ must be zero) #endif -#if defined(__USE_BX__) - bx lr -#else - mov pc,lr -#endif + BX(lr) #endif .size strlen,.-strlen diff --git a/libc/sysdeps/linux/arm/__longjmp.S b/libc/sysdeps/linux/arm/__longjmp.S index 853b906..58ae8ab 100644 --- a/libc/sysdeps/linux/arm/__longjmp.S +++ b/libc/sysdeps/linux/arm/__longjmp.S @@ -98,12 +98,7 @@ __longjmp: ldcl p1, cr14, [r12], #8 ldcl p1, cr15, [r12], #8 #endif - -#if defined(__USE_BX__) - bx lr -#else - mov pc, lr -#endif + BX(lr) #endif .size __longjmp,.-__longjmp diff --git a/libc/sysdeps/linux/arm/bits/arm_asm.h b/libc/sysdeps/linux/arm/bits/arm_asm.h index 04664b3..898a78b 100644 --- a/libc/sysdeps/linux/arm/bits/arm_asm.h +++ b/libc/sysdeps/linux/arm/bits/arm_asm.h @@ -13,12 +13,12 @@ unified assembly syntax. */ #define IT(t, cond) /* Code to return from a thumb function stub. */ -#ifdef __ARM_ARCH_4T__ -#define POP_RET pop {r2, pc} -#else -#define POP_RET pop {r2, r3}; bx r3 -#endif -#endif +# if defined __ARM_ARCH_4T__ && defined __THUMB_INTERWORK__ +# define POP_RET pop {r2, r3}; bx r3 +# else +# define POP_RET pop {r2, pc} +# endif +#endif /* __thumb2__ */ #if defined(__ARM_ARCH_6M__) /* Force arm mode to flush out errors on M profile cores. */ diff --git a/libc/sysdeps/linux/arm/bits/arm_bx.h b/libc/sysdeps/linux/arm/bits/arm_bx.h index 321490e..2c29089 100644 --- a/libc/sysdeps/linux/arm/bits/arm_bx.h +++ b/libc/sysdeps/linux/arm/bits/arm_bx.h @@ -24,11 +24,17 @@ #endif /* features.h not yet included */ #if defined(__USE_BX__) -# if ( defined (__ARM_ARCH_2__) || defined (__ARM_ARCH_3__) \ - || defined (__ARM_ARCH_3M__) || defined (__ARM_ARCH_4__) \ - ) +# if (__ARM_ARCH <= 4 && !defined __ARM_ARCH_4T__) # error Use of BX was requested, but is not available on the target processor. # endif /* ARCH level */ #endif /* __USE_BX__ */ +#if defined(__USE_BX__) && (__ARM_ARCH > 4 || (__ARM_ARCH == 4 && defined __ARM_ARCH_4T__)) +# define BX(reg) bx reg +# define BXC(cond, reg) bx##cond reg +#else +# define BX(reg) mov pc, reg +# define BXC(cond, reg) mov##cond pc, reg +#endif + #endif /* _ARM_BX_H */ diff --git a/libc/sysdeps/linux/arm/bits/uClibc_arch_features.h b/libc/sysdeps/linux/arm/bits/uClibc_arch_features.h index b01d79c..e85aa52 100644 --- a/libc/sysdeps/linux/arm/bits/uClibc_arch_features.h +++ b/libc/sysdeps/linux/arm/bits/uClibc_arch_features.h @@ -48,6 +48,32 @@ /* only weird assemblers generally need this */ #undef __UCLIBC_ASM_LINE_SEP__ + +/* The __ARM_ARCH define is provided by gcc 4.8. Construct it otherwise. */ +#ifndef __ARM_ARCH +# ifdef __ARM_ARCH_2__ +# define __ARM_ARCH 2 +# elif defined (__ARM_ARCH_3__) || defined (__ARM_ARCH_3M__) +# define __ARM_ARCH 3 +# elif defined (__ARM_ARCH_4__) || defined (__ARM_ARCH_4T__) +# define __ARM_ARCH 4 +# elif defined (__ARM_ARCH_5__) || defined (__ARM_ARCH_5E__) \ + || defined(__ARM_ARCH_5T__) || defined(__ARM_ARCH_5TE__) \ + || defined(__ARM_ARCH_5TEJ__) +# define __ARM_ARCH 5 +# elif defined (__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) \ + || defined (__ARM_ARCH_6Z__) || defined(__ARM_ARCH_6ZK__) \ + || defined (__ARM_ARCH_6K__) || defined(__ARM_ARCH_6T2__) +# define __ARM_ARCH 6 +# elif defined (__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) \ + || defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) \ + || defined(__ARM_ARCH_7EM__) +# define __ARM_ARCH 7 +# else +# error unknown arm architecture +# endif +#endif + #ifdef __GNUC__ # define __need_uClibc_config_h # include <bits/uClibc_config.h> diff --git a/libc/sysdeps/linux/arm/clone.S b/libc/sysdeps/linux/arm/clone.S index 03cd10e..63eca31 100644 --- a/libc/sysdeps/linux/arm/clone.S +++ b/libc/sysdeps/linux/arm/clone.S @@ -115,11 +115,7 @@ __clone: ldmnefd sp!, {r4} blt __error IT(t, ne) -#if defined(__USE_BX__) - bxne lr -#else - movne pc, lr -#endif + BXC(ne, lr) @ pick the function arg and call address off the stack and execute ldr r0, [sp, #4] diff --git a/libc/sysdeps/linux/arm/mmap64.S b/libc/sysdeps/linux/arm/mmap64.S index f4c491a..c9f2bd2 100644 --- a/libc/sysdeps/linux/arm/mmap64.S +++ b/libc/sysdeps/linux/arm/mmap64.S @@ -92,11 +92,7 @@ mmap64: cmn r0, $4096 ldmfd sp!, {r4, r5} IT(t, cc) -#if defined(__USE_BX__) - bxcc lr -#else - movcc pc, lr -#endif + BXC(cc, lr) b __syscall_error .Linval: mov r0, $-EINVAL diff --git a/libc/sysdeps/linux/arm/syscall-eabi.S b/libc/sysdeps/linux/arm/syscall-eabi.S index 005cfe3..534c6e9 100644 --- a/libc/sysdeps/linux/arm/syscall-eabi.S +++ b/libc/sysdeps/linux/arm/syscall-eabi.S @@ -15,7 +15,7 @@ License along with the GNU C Library; if not, see <http://www.gnu.org/licenses/>. */ -#include <sys/syscall.h> +#include <features.h> #include <bits/arm_asm.h> #include <bits/arm_bx.h> @@ -62,11 +62,7 @@ syscall: ldmfd sp!, {r4, r5, r6, r7} cmn r0, #4096 IT(t, cc) -#if defined(__USE_BX__) - bxcc lr -#else - movcc pc, lr -#endif + BXC(cc, lr) b __syscall_error #endif diff --git a/libc/sysdeps/linux/arm/sysdep.h b/libc/sysdeps/linux/arm/sysdep.h index 64f4040..019dc37 100644 --- a/libc/sysdeps/linux/arm/sysdep.h +++ b/libc/sysdeps/linux/arm/sysdep.h @@ -21,7 +21,6 @@ #include <common/sysdep.h> #include <bits/arm_bx.h> - #include <sys/syscall.h> /* For Linux we can use the system call table in the header file /usr/include/asm/unistd.h @@ -50,17 +49,10 @@ #ifdef __APCS_32__ #define LOADREGS(cond, base, reglist...)\ ldm##cond base,reglist -#ifdef __USE_BX__ -#define RETINSTR(cond, reg) \ - bx##cond reg -#define DO_RET(_reg) \ - bx _reg -#else -#define RETINSTR(cond, reg) \ - mov##cond pc, reg +#define RETINSTR(cond, reg) \ + BXC(cond, reg) #define DO_RET(_reg) \ - mov pc, _reg -#endif + BX(_reg) #else /* APCS-26 */ #define LOADREGS(cond, base, reglist...) \ ldm##cond base,reglist^ diff --git a/libc/sysdeps/linux/arm/vfork.S b/libc/sysdeps/linux/arm/vfork.S index 99fb6cb..221a90c 100644 --- a/libc/sysdeps/linux/arm/vfork.S +++ b/libc/sysdeps/linux/arm/vfork.S @@ -74,11 +74,7 @@ __vfork: RESTORE_PID cmn r0, #4096 IT(t, cc) -#if defined(__USE_BX__) - bxcc lr -#else - movcc pc, lr -#endif + BXC(cc, lr) /* Check if vfork even exists. */ ldr r1, =-ENOSYS @@ -92,11 +88,7 @@ __vfork: /* Syscall worked. Return to child/parent */ IT(t, cc) -#if defined(__USE_BX__) - bxcc lr -#else - movcc pc, lr -#endif + BXC(cc, lr) __error: b __syscall_error hooks/post-receive -- uClibc-ng - small C library for embedded systems