diff options
| -rw-r--r-- | Rules.mak | 1 | ||||
| -rw-r--r-- | extra/Configs/Config.arm | 22 | ||||
| -rw-r--r-- | libc/sysdeps/linux/arm/bits/arm_bx.h | 10 | ||||
| -rw-r--r-- | libc/sysdeps/linux/arm/clone.S | 2 | ||||
| -rw-r--r-- | libpthread/linuxthreads.old/sysdeps/arm/pt-machine.h | 7 |
5 files changed, 8 insertions, 34 deletions
@@ -392,7 +392,6 @@ endif ifeq ($(TARGET_ARCH),arm) CPU_CFLAGS-$(ARCH_LITTLE_ENDIAN)+=-mlittle-endian CPU_CFLAGS-$(ARCH_BIG_ENDIAN)+=-mbig-endian - CPU_CFLAGS-$(COMPILE_IN_THUMB_MODE)+=-mthumb endif ifeq ($(TARGET_ARCH),metag) diff --git a/extra/Configs/Config.arm b/extra/Configs/Config.arm index 00cf98281..0d02e3f10 100644 --- a/extra/Configs/Config.arm +++ b/extra/Configs/Config.arm @@ -24,25 +24,3 @@ config CONFIG_ARM_EABI If you say 'n' here, then the library will be built for the old Linux ABI. - -config COMPILE_IN_THUMB_MODE - bool "Build using Thumb mode" - select USE_BX - select USE_LDREXSTREX - help - Say 'y' here to force building uClibc in thumb mode. - Say 'n' to use your compiler's default mode. - -config USE_BX - bool "Use BX in function return" - help - Say 'y' to use BX to return from functions on your thumb-aware - processor. Say 'y' if you need to use interworking. Say 'n' if not. - It is safe to say 'y' even if you're not doing interworking. - -config USE_LDREXSTREX - bool "Use load-store exclusive ASM ops (not supported in SmartFusion)" - depends on COMPILE_IN_THUMB_MODE - default n - help - Say 'y' to use LDREX/STREX ASM ops. diff --git a/libc/sysdeps/linux/arm/bits/arm_bx.h b/libc/sysdeps/linux/arm/bits/arm_bx.h index 2c290896d..1c775b681 100644 --- a/libc/sysdeps/linux/arm/bits/arm_bx.h +++ b/libc/sysdeps/linux/arm/bits/arm_bx.h @@ -23,13 +23,11 @@ #error Please include features.h first #endif /* features.h not yet included */ -#if defined(__USE_BX__) -# 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 __ARM_ARCH > 4 || defined (__ARM_ARCH_4T__) +# define ARCH_HAS_BX +#endif -#if defined(__USE_BX__) && (__ARM_ARCH > 4 || (__ARM_ARCH == 4 && defined __ARM_ARCH_4T__)) +#if defined(ARCH_HAS_BX) # define BX(reg) bx reg # define BXC(cond, reg) bx##cond reg #else diff --git a/libc/sysdeps/linux/arm/clone.S b/libc/sysdeps/linux/arm/clone.S index b4c7d8a02..fd7590dd0 100644 --- a/libc/sysdeps/linux/arm/clone.S +++ b/libc/sysdeps/linux/arm/clone.S @@ -69,7 +69,7 @@ __clone: @ pick the function arg and call address off the stack and execute ldr r0, [sp, #4] -#if defined(__USE_BX__) +#if defined(ARCH_HAS_BX) ldr r1, [sp] bl 2f @ blx r1 #else diff --git a/libpthread/linuxthreads.old/sysdeps/arm/pt-machine.h b/libpthread/linuxthreads.old/sysdeps/arm/pt-machine.h index 2b877f980..fc17e9bc7 100644 --- a/libpthread/linuxthreads.old/sysdeps/arm/pt-machine.h +++ b/libpthread/linuxthreads.old/sysdeps/arm/pt-machine.h @@ -28,8 +28,7 @@ # define PT_EI __extern_always_inline #endif -#if defined(__thumb__) -#if defined(__USE_LDREXSTREX__) +#if defined(__thumb2__) PT_EI long int ldrex(int *spinlock) { long int ret; @@ -63,7 +62,7 @@ testandset (int *spinlock) return ret; } -#else /* __USE_LDREXSTREX__ */ +#elif defined(__thumb__) /* This will not work on ARM1 or ARM2 because SWP is lacking on those machines. Unfortunately we have no way to detect this at compile @@ -88,7 +87,7 @@ PT_EI long int testandset (int *spinlock) : "0"(1), "r"(spinlock)); return ret; } -#endif + #else /* __thumb__ */ PT_EI long int testandset (int *spinlock); |