mirror/zig
1
0
Fork 0
mirror of https://github.com/ziglang/zig.git synced 2026-01-21 06:45:24 +00:00
Code Issues Packages Projects Releases Wiki Activity

zig.h: Add zig_gnuc_asm macro to indicate availability of GNU-style inline asm.

Browse Source
This commit is contained in:
Alex Rønne Petersen 2024-12-03 12:11:05 +01:00
parent f058b147d3
commit c27488a387
No known key found for this signature in database
1 changed files with 30 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

40
lib/zig.h
View File

@ -342,13 +342,23 @@
#define zig_weak_linkage_fn zig_weak_linkage_unavailable
#endif
#if defined(zig_gnuc) || defined(zig_tinyc) || defined(zig_slimcc)
#define zig_gnuc_asm
#endif
#if zig_has_builtin(trap)
#define zig_trap() __builtin_trap()
#elif defined(zig_msvc) && defined(zig_x86)
#define zig_trap() __ud2()
#elif defined(zig_msvc)
#if defined(zig_x86)
#define zig_trap() __ud2()
#else
#define zig_trap() __fastfail(7)
#elif defined(zig_thumb)
#endif
#elif defined(zig_gnuc_asm)
#if defined(zig_thumb)
#define zig_trap() __asm__ volatile("udf #0xfe")
#elif defined(zig_arm) || defined(zig_aarch64)
#define zig_trap() __asm__ volatile("udf #0xfdee")
@ -370,11 +380,17 @@
#define zig_trap() zig_trap_unavailable
#endif
#else
#define zig_trap() zig_trap_unavailable
#endif
#if zig_has_builtin(debugtrap)
#define zig_breakpoint() __builtin_debugtrap()
#elif defined(zig_msvc)
#define zig_breakpoint() __debugbreak()
#elif defined(zig_arm)
#elif defined(zig_gnuc_asm)
#if defined(zig_arm)
#define zig_breakpoint() __asm__ volatile("bkpt #0x0")
#elif defined(zig_aarch64)
#define zig_breakpoint() __asm__ volatile("brk #0xf000")
@ -398,6 +414,10 @@
#define zig_breakpoint() zig_breakpoint_unavailable
#endif
#else
#define zig_breakpoint() zig_breakpoint_unavailable
#endif
#if zig_has_builtin(return_address) || defined(zig_gnuc) || defined(zig_tinyc)
#define zig_return_address() __builtin_extract_return_addr(__builtin_return_address(0))
#elif defined(zig_msvc)
@ -4063,7 +4083,7 @@ static inline void* zig_thumb_windows_teb(void) {
void* teb = 0;
#if defined(zig_msvc)
teb = (void*)_MoveFromCoprocessor(15, 0, 13, 0, 2);
#elif defined(zig_gnuc) || defined(zig_tinyc) || defined(zig_slimcc)
#elif defined(zig_gnuc_asm)
__asm__ ("mrc p15, 0, %[ptr], c13, c0, 2" : [ptr] "=r" (teb));
#endif
return teb;
@ -4075,7 +4095,7 @@ static inline void* zig_aarch64_windows_teb(void) {
void* teb = 0;
#if defined(zig_msvc)
teb = (void*)__readx18qword(0x0);
#elif defined(zig_gnuc) || defined(zig_tinyc) || defined(zig_slimcc)
#elif defined(zig_gnuc_asm)
__asm__ ("mov %[ptr], x18" : [ptr] "=r" (teb));
#endif
return teb;
@ -4087,7 +4107,7 @@ static inline void* zig_x86_windows_teb(void) {
void* teb = 0;
#if defined(zig_msvc)
teb = (void*)__readfsdword(0x18);
#elif defined(zig_gnuc) || defined(zig_tinyc) || defined(zig_slimcc)
#elif defined(zig_gnuc_asm)
__asm__ ("movl %%fs:0x18, %[ptr]" : [ptr] "=r" (teb));
#endif
return teb;
@ -4099,7 +4119,7 @@ static inline void* zig_x86_64_windows_teb(void) {
void* teb = 0;
#if defined(zig_msvc)
teb = (void*)__readgsqword(0x30);
#elif defined(zig_gnuc) || defined(zig_tinyc) || defined(zig_slimcc)
#elif defined(zig_gnuc_asm)
__asm__ ("movq %%gs:0x30, %[ptr]" : [ptr] "=r" (teb));
#endif
return teb;
@ -4117,7 +4137,7 @@ static inline void zig_x86_cpuid(uint32_t leaf_id, uint32_t subid, uint32_t* eax
*ebx = (uint32_t)cpu_info[1];
*ecx = (uint32_t)cpu_info[2];
*edx = (uint32_t)cpu_info[3];
#elif defined(zig_gnuc) || defined(zig_tinyc) || defined(zig_slimcc)
#elif defined(zig_gnuc_asm)
__asm__("cpuid" : "=a"(*eax), "=b"(*ebx), "=c"(*ecx), "=d"(*edx) : "a"(leaf_id), "c"(subid));
#else
*eax = 0;
@ -4130,7 +4150,7 @@ static inline void zig_x86_cpuid(uint32_t leaf_id, uint32_t subid, uint32_t* eax
static inline uint32_t zig_x86_get_xcr0(void) {
#if defined(zig_msvc)
return (uint32_t)_xgetbv(0);
#elif defined(zig_gnuc) || defined(zig_tinyc) || defined(zig_slimcc)
#elif defined(zig_gnuc_asm)
uint32_t eax;
uint32_t edx;
__asm__("xgetbv" : "=a"(eax), "=d"(edx) : "c"(0));