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re PR go/46959 (M68K Not Supported by Go)

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PR go/46959
	PR go/46960
	PR go/46961
	PR go/46962
	PR go/46963
	PR go/46964
Use __builtin_unwind_init rather than the SAVE_REGS hack.

From-SVN: r168500
This commit is contained in:
Ian Lance Taylor 2011-01-05 00:24:15 +00:00
parent adb7f9c365
commit 9a00604e53
1 changed files with 2 additions and 17 deletions
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19
libgo/runtime/go-go.c
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@ -25,21 +25,6 @@ extern void *__splitstack_find (void *, void *, size_t *, void **, void **,
void **);
#endif
/* We need to ensure that all callee-saved registers are stored on the
stack, in case they hold pointers. */
#if defined(__i386__)
#ifndef __PIC__
#define SAVE_REGS asm ("" : : : "esi", "edi", "ebx")
#else
#define SAVE_REGS asm ("" : : : "esi", "edi")
#endif
#elif defined(__x86_64__)
#define SAVE_REGS asm ("" : : : "r12", "r13", "r14", "r15", "rbp", "rbx")
#else
#error must define SAVE_REGS
#endif
/* We stop the threads by sending them the signal GO_SIG_STOP and we
start them by sending them the signal GO_SIG_START. */
@ -344,7 +329,7 @@ __go_run_goroutine_gc (int r)
needed if we are called directly, since otherwise we might miss
something that a function somewhere up the call stack is holding
in a register. */
SAVE_REGS;
__builtin_unwind_init ();
stop_for_gc ();
@ -433,7 +418,7 @@ __go_scanstacks (void (*scan) (byte *, int64))
struct __go_thread_id *p;
/* Make sure all the registers for this thread are on the stack. */
SAVE_REGS;
__builtin_unwind_init ();
me = pthread_self ();
for (p = __go_all_thread_ids; p != NULL; p = p->next)