diff options
Diffstat (limited to 'lib/libcompiler_rt/assembly.h')
| -rw-r--r-- | lib/libcompiler_rt/assembly.h | 56 |
1 files changed, 44 insertions, 12 deletions
diff --git a/lib/libcompiler_rt/assembly.h b/lib/libcompiler_rt/assembly.h index b15da52345c..3f5e59b2544 100644 --- a/lib/libcompiler_rt/assembly.h +++ b/lib/libcompiler_rt/assembly.h @@ -68,10 +68,42 @@ #endif #if defined(__arm__) + +/* + * Determine actual [ARM][THUMB[1][2]] ISA using compiler predefined macros: + * - for '-mthumb -march=armv6' compiler defines '__thumb__' + * - for '-mthumb -march=armv7' compiler defines '__thumb__' and '__thumb2__' + */ +#if defined(__thumb2__) || defined(__thumb__) +#define DEFINE_CODE_STATE .thumb SEPARATOR +#define DECLARE_FUNC_ENCODING .thumb_func SEPARATOR +#if defined(__thumb2__) +#define USE_THUMB_2 +#define IT(cond) it cond +#define ITT(cond) itt cond +#define ITE(cond) ite cond +#else +#define USE_THUMB_1 +#define IT(cond) +#define ITT(cond) +#define ITE(cond) +#endif // defined(__thumb__2) +#else // !defined(__thumb2__) && !defined(__thumb__) +#define DEFINE_CODE_STATE .arm SEPARATOR +#define DECLARE_FUNC_ENCODING +#define IT(cond) +#define ITT(cond) +#define ITE(cond) +#endif + +#if defined(USE_THUMB_1) && defined(USE_THUMB_2) +#error "USE_THUMB_1 and USE_THUMB_2 can't be defined together." +#endif + #if defined(__ARM_ARCH_4T__) || __ARM_ARCH >= 5 #define ARM_HAS_BX #endif -#if !defined(__ARM_FEATURE_CLZ) && __ARM_ARCH_ISA_THUMB != 1 && \ +#if !defined(__ARM_FEATURE_CLZ) && !defined(USE_THUMB_1) && \ (__ARM_ARCH >= 6 || (__ARM_ARCH == 5 && !defined(__ARM_ARCH_5__))) #define __ARM_FEATURE_CLZ #endif @@ -93,21 +125,14 @@ JMP(ip) #endif -#if __ARM_ARCH_ISA_THUMB == 2 -#define IT(cond) it cond -#define ITT(cond) itt cond -#define ITE(cond) ite cond -#else -#define IT(cond) -#define ITT(cond) -#define ITE(cond) -#endif - -#if __ARM_ARCH_ISA_THUMB == 2 +#if defined(USE_THUMB_2) #define WIDE(op) op.w #else #define WIDE(op) op #endif +#else // !defined(__arm) +#define DECLARE_FUNC_ENCODING +#define DEFINE_CODE_STATE #endif #define GLUE2(a, b) a##b @@ -122,13 +147,16 @@ #endif #define DEFINE_COMPILERRT_FUNCTION(name) \ + DEFINE_CODE_STATE \ FILE_LEVEL_DIRECTIVE SEPARATOR \ .globl SYMBOL_NAME(name) SEPARATOR \ SYMBOL_IS_FUNC(SYMBOL_NAME(name)) SEPARATOR \ DECLARE_SYMBOL_VISIBILITY(name) \ + DECLARE_FUNC_ENCODING \ SYMBOL_NAME(name): #define DEFINE_COMPILERRT_THUMB_FUNCTION(name) \ + DEFINE_CODE_STATE \ FILE_LEVEL_DIRECTIVE SEPARATOR \ .globl SYMBOL_NAME(name) SEPARATOR \ SYMBOL_IS_FUNC(SYMBOL_NAME(name)) SEPARATOR \ @@ -137,16 +165,20 @@ SYMBOL_NAME(name): #define DEFINE_COMPILERRT_PRIVATE_FUNCTION(name) \ + DEFINE_CODE_STATE \ FILE_LEVEL_DIRECTIVE SEPARATOR \ .globl SYMBOL_NAME(name) SEPARATOR \ SYMBOL_IS_FUNC(SYMBOL_NAME(name)) SEPARATOR \ HIDDEN(SYMBOL_NAME(name)) SEPARATOR \ + DECLARE_FUNC_ENCODING \ SYMBOL_NAME(name): #define DEFINE_COMPILERRT_PRIVATE_FUNCTION_UNMANGLED(name) \ + DEFINE_CODE_STATE \ .globl name SEPARATOR \ SYMBOL_IS_FUNC(name) SEPARATOR \ HIDDEN(name) SEPARATOR \ + DECLARE_FUNC_ENCODING \ name: #define DEFINE_COMPILERRT_FUNCTION_ALIAS(name, target) \ |