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Merge branch 'fasm2' into 'master'

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GLdispatch: Improve the x86 tsd stubs performance.

See merge request glvnd/libglvnd!197
This commit is contained in:
Kyle Brenneman 2019-11-22 21:49:07 +00:00
parent 79b1b8933d 6e310f7256
commit 005d2568ee
1 changed files with 6 additions and 5 deletions
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11
src/GLdispatch/vnd-glapi/entry_x86_tsd.c
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@ -56,18 +56,19 @@ __asm__(".balign " U_STRINGIFY(GLDISPATCH_PAGE_SIZE) "\n"
func ":\n"
#define STUB_ASM_CODE(slot) \
"push %ebx\n" \
"call 1f\n" \
"1:\n" \
"popl %ebx\n" \
"addl $_GLOBAL_OFFSET_TABLE_+[.-1b], %ebx\n" \
"movl _glapi_Current@GOT(%ebx), %eax\n" \
"popl %ecx\n" \
"addl $_GLOBAL_OFFSET_TABLE_+[.-1b], %ecx\n" \
"movl _glapi_Current@GOT(%ecx), %eax\n" \
"mov (%eax), %eax\n" \
"testl %eax, %eax\n" \
"jne 1f\n" \
"push %ebx\n" \
"movl %ecx, %ebx\n" \
"call _glapi_get_current@PLT\n" \
"popl %ebx\n" \
"1:\n" \
"pop %ebx\n" \
"jmp *(4 * " slot ")(%eax)\n"
#define MAPI_TMP_STUB_ASM_GCC