diff options
Diffstat (limited to 'src/signal/powerpc/sigsetjmp.s')
| -rw-r--r-- | src/signal/powerpc/sigsetjmp.s | 29 |
1 files changed, 15 insertions, 14 deletions
diff --git a/src/signal/powerpc/sigsetjmp.s b/src/signal/powerpc/sigsetjmp.s index deed732f..a23463d2 100644 --- a/src/signal/powerpc/sigsetjmp.s +++ b/src/signal/powerpc/sigsetjmp.s @@ -10,25 +10,26 @@ sigsetjmp: #2) if its 0, goto setjmp code beq- cr7, 1f #3) else: we must call pthread_sigmask(SIG_SETMASK, 0, (sigset_t *)buf->__ss); - # increase stack frame by 16 - subi 1, 1, 16 - # thus store r3 on the stack, to restore it later - stw 3, 12(1) - # store old link reg - mflr 0 - stw 0, 8(1) + # store non-volatile regs 30, 31 into the setjmp buf + stw 30, 0(3) + stw 31, 4(3) + # use them to store the pointer to the jmpbuf and the link reg + mr 30, 3 + mflr 31 + # put pointer to ss buf into r5 (3rd arg) addi 5, 3, 260 # put "2" i.e. SIG_SETMASK in r3 li 3, 2 li 4, 0 bl pthread_sigmask - #restore r3 - lwz 3, 12(1) - #restore link reg - lwz 0, 8(1) - mtlr 0 - #restore sp - addi 1, 1, 16 + + #restore jmpbuf pointer and link reg + mr 3, 30 + mtlr 31 + #resore non-volatile regs + lwz 30, 0(3) + lwz 31, 4(3) + 1: b setjmp |