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.global _longjmp
.global longjmp
.type _longjmp,@function
.type longjmp,@function
_longjmp:
longjmp:
# void longjmp(jmp_buf env, int val);
# put val into return register and restore the env saved in setjmp
# if val(r4) is 0, put 1 there.
# 0) move old return address into r0
lwz 0, 0(3)
# 1) put it into link reg
mtlr 0
#2 ) restore stack ptr
lwz 1, 4(3)
#3) restore control reg
lwz 0, 8(3)
mtcr 0
#4) restore r14-r31
lwz 14, 12(3)
lwz 15, 16(3)
lwz 16, 20(3)
lwz 17, 24(3)
lwz 18, 28(3)
lwz 19, 32(3)
lwz 20, 36(3)
lwz 21, 40(3)
lwz 22, 44(3)
lwz 23, 48(3)
lwz 24, 52(3)
lwz 25, 56(3)
lwz 26, 60(3)
lwz 27, 64(3)
lwz 28, 68(3)
lwz 29, 72(3)
lwz 30, 76(3)
lwz 31, 80(3)
#5) put val into return reg r3
mr 3, 4
#6) check if return value is 0, make it 1 in that case
cmpwi cr7, 4, 0
bne cr7, 1f
li 3, 1
1:
blr
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