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py/nlraarch64: Add underscore prefix to function symbols for Darwin ABI.

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The proper way to do this is to test for __APPLE__ and __MACH__, where
__APPLE__ tests for an Apple OS and __MACH__ tests that it is based on CMU
Mach.  Using both tests ensures that just Darwin (Apple's open source base
for MacOS, iOS, etc.) is recognized. __APPLE__ by itself will test for any
Apple OS, which can include older OS 7-9 and any future Apple OS. __MACH__
tests for any OS based on CMU Mach, including Darwin and GNU Hurd.

Fixes #7232.
This commit is contained in:
Bob Abeles 2021-05-14 07:57:19 -07:00 committed by Damien George
parent 6d2680fa36
commit 126b1c7271
1 changed files with 9 additions and 0 deletions
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9
py/nlraarch64.c
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@ -34,8 +34,13 @@
// Implemented purely as inline assembly; inside a function, we have to deal with undoing the prologue, restoring
// SP and LR. This way, we don't.
__asm(
#if defined(__APPLE__) && defined(__MACH__)
"_nlr_push: \n"
".global _nlr_push \n"
#else
"nlr_push: \n"
".global nlr_push \n"
#endif
"mov x9, sp \n"
"stp lr, x9, [x0, #16]\n" // 16 == offsetof(nlr_buf_t, regs)
"stp x19, x20, [x0, #32]\n"
@ -44,7 +49,11 @@ __asm(
"stp x25, x26, [x0, #80]\n"
"stp x27, x28, [x0, #96]\n"
"str x29, [x0, #112]\n"
#if defined(__APPLE__) && defined(__MACH__)
"b _nlr_push_tail \n" // do the rest in C
#else
"b nlr_push_tail \n" // do the rest in C
#endif
);
NORETURN void nlr_jump(void *val) {