diff options
Diffstat (limited to 'contrib/llvm-project/compiler-rt/lib/builtins/assembly.h')
| -rw-r--r-- | contrib/llvm-project/compiler-rt/lib/builtins/assembly.h | 93 |
1 files changed, 87 insertions, 6 deletions
diff --git a/contrib/llvm-project/compiler-rt/lib/builtins/assembly.h b/contrib/llvm-project/compiler-rt/lib/builtins/assembly.h index f437cb87f60a..f6ce6a9fccff 100644 --- a/contrib/llvm-project/compiler-rt/lib/builtins/assembly.h +++ b/contrib/llvm-project/compiler-rt/lib/builtins/assembly.h @@ -14,8 +14,8 @@ #ifndef COMPILERRT_ASSEMBLY_H #define COMPILERRT_ASSEMBLY_H -#if defined(__POWERPC__) || defined(__powerpc__) || defined(__ppc__) -#define SEPARATOR @ +#if defined(__APPLE__) && defined(__aarch64__) +#define SEPARATOR %% #else #define SEPARATOR ; #endif @@ -35,14 +35,14 @@ #define HIDDEN(name) .hidden name #define LOCAL_LABEL(name) .L_##name #define FILE_LEVEL_DIRECTIVE -#if defined(__arm__) +#if defined(__arm__) || defined(__aarch64__) #define SYMBOL_IS_FUNC(name) .type name,%function #else #define SYMBOL_IS_FUNC(name) .type name,@function #endif #define CONST_SECTION .section .rodata -#if defined(__GNU__) || defined(__FreeBSD__) || defined(__Fuchsia__) || \ +#if defined(__GNU__) || defined(__FreeBSD__) || defined(__Fuchsia__) || \ defined(__linux__) #define NO_EXEC_STACK_DIRECTIVE .section .note.GNU-stack,"",%progbits #else @@ -65,6 +65,66 @@ #endif +#if defined(__arm__) || defined(__aarch64__) +#define FUNC_ALIGN \ + .text SEPARATOR \ + .balign 16 SEPARATOR +#else +#define FUNC_ALIGN +#endif + +// BTI and PAC gnu property note +#define NT_GNU_PROPERTY_TYPE_0 5 +#define GNU_PROPERTY_AARCH64_FEATURE_1_AND 0xc0000000 +#define GNU_PROPERTY_AARCH64_FEATURE_1_BTI 1 +#define GNU_PROPERTY_AARCH64_FEATURE_1_PAC 2 + +#if defined(__ARM_FEATURE_BTI_DEFAULT) +#define BTI_FLAG GNU_PROPERTY_AARCH64_FEATURE_1_BTI +#else +#define BTI_FLAG 0 +#endif + +#if __ARM_FEATURE_PAC_DEFAULT & 3 +#define PAC_FLAG GNU_PROPERTY_AARCH64_FEATURE_1_PAC +#else +#define PAC_FLAG 0 +#endif + +#define GNU_PROPERTY(type, value) \ + .pushsection .note.gnu.property, "a" SEPARATOR \ + .p2align 3 SEPARATOR \ + .word 4 SEPARATOR \ + .word 16 SEPARATOR \ + .word NT_GNU_PROPERTY_TYPE_0 SEPARATOR \ + .asciz "GNU" SEPARATOR \ + .word type SEPARATOR \ + .word 4 SEPARATOR \ + .word value SEPARATOR \ + .word 0 SEPARATOR \ + .popsection + +#if BTI_FLAG != 0 +#define BTI_C bti c +#else +#define BTI_C +#endif + +#if (BTI_FLAG | PAC_FLAG) != 0 +#define GNU_PROPERTY_BTI_PAC \ + GNU_PROPERTY(GNU_PROPERTY_AARCH64_FEATURE_1_AND, BTI_FLAG | PAC_FLAG) +#else +#define GNU_PROPERTY_BTI_PAC +#endif + +#if defined(__clang__) || defined(__GCC_HAVE_DWARF2_CFI_ASM) +#define CFI_START .cfi_startproc +#define CFI_END .cfi_endproc +#else +#define CFI_START +#define CFI_END +#endif + #if defined(__arm__) // Determine actual [ARM][THUMB[1][2]] ISA using compiler predefined macros: @@ -131,8 +191,14 @@ #define DEFINE_CODE_STATE #endif -#define GLUE2(a, b) a##b -#define GLUE(a, b) GLUE2(a, b) +#define GLUE2_(a, b) a##b +#define GLUE(a, b) GLUE2_(a, b) +#define GLUE2(a, b) GLUE2_(a, b) +#define GLUE3_(a, b, c) a##b##c +#define GLUE3(a, b, c) GLUE3_(a, b, c) +#define GLUE4_(a, b, c, d) a##b##c##d +#define GLUE4(a, b, c, d) GLUE4_(a, b, c, d) + #define SYMBOL_NAME(name) GLUE(__USER_LABEL_PREFIX__, name) #ifdef VISIBILITY_HIDDEN @@ -177,6 +243,16 @@ DECLARE_FUNC_ENCODING \ name: +#define DEFINE_COMPILERRT_OUTLINE_FUNCTION_UNMANGLED(name) \ + DEFINE_CODE_STATE \ + FUNC_ALIGN \ + .globl name SEPARATOR \ + SYMBOL_IS_FUNC(name) SEPARATOR \ + DECLARE_SYMBOL_VISIBILITY(name) SEPARATOR \ + CFI_START SEPARATOR \ + DECLARE_FUNC_ENCODING \ + name: SEPARATOR BTI_C + #define DEFINE_COMPILERRT_FUNCTION_ALIAS(name, target) \ .globl SYMBOL_NAME(name) SEPARATOR \ SYMBOL_IS_FUNC(SYMBOL_NAME(name)) SEPARATOR \ @@ -193,8 +269,13 @@ #ifdef __ELF__ #define END_COMPILERRT_FUNCTION(name) \ .size SYMBOL_NAME(name), . - SYMBOL_NAME(name) +#define END_COMPILERRT_OUTLINE_FUNCTION(name) \ + CFI_END SEPARATOR \ + .size SYMBOL_NAME(name), . - SYMBOL_NAME(name) #else #define END_COMPILERRT_FUNCTION(name) +#define END_COMPILERRT_OUTLINE_FUNCTION(name) \ + CFI_END #endif #endif // COMPILERRT_ASSEMBLY_H |