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.global sigsetjmp
.type sigsetjmp,%function
sigsetjmp:
#int sigsetjmp(sigjmp_buf buf, int save)
# r3 r4
#0) store save into buf->__fl
stw 4, 256(3)
#1) compare save with 0
cmpwi cr7, 4, 0
#2) if its 0, goto setjmp code
beq- cr7, 1f
#3) else: we must call pthread_sigmask(SIG_SETMASK, 0, (sigset_t *)buf->__ss);
# thus store r3 on the stack, to restore it later
stw 3, -4(1)
# store old link reg
mflr 0
stw 0, -8(1)
# increase stack frame by 16
subi 1, 1, 16
# 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 sp
addi 1, 1, 16
#restore r3
lwz 3, -4(1)
#restore link reg
lwz 0, -8(1)
mtlr 0
1:
b setjmp
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