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py/nlrx64: Fixes to support Mac OS.

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Two independent fixes:
- need to prefix symbols referenced from asm with underscore;
- need to undo the C-function prelude.
This commit is contained in:
Damien George 2017-03-07 17:05:08 +11:00
parent a64a0276b3
commit 52b6764894
1 changed files with 7 additions and 0 deletions
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7
py/nlrx64.c
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@ -61,6 +61,9 @@ unsigned int nlr_push(nlr_buf_t *nlr) {
#else
__asm volatile (
#if defined(__APPLE__) || defined(__MACH__)
"pop %rbp \n" // undo function's prelude
#endif
"movq (%rsp), %rax \n" // load return %rip
"movq %rax, 16(%rdi) \n" // store %rip into nlr_buf
"movq %rbp, 24(%rdi) \n" // store %rbp into nlr_buf
@ -70,7 +73,11 @@ unsigned int nlr_push(nlr_buf_t *nlr) {
"movq %r13, 56(%rdi) \n" // store %r13 into nlr_buf
"movq %r14, 64(%rdi) \n" // store %r14 into nlr_buf
"movq %r15, 72(%rdi) \n" // store %r15 into nlr_buf
#if defined(__APPLE__) || defined(__MACH__)
"jmp _nlr_push_tail \n" // do the rest in C
#else
"jmp nlr_push_tail \n" // do the rest in C
#endif
);
#endif