diff options
Diffstat (limited to 'src/setjmp/powerpc/longjmp.s')
| -rw-r--r-- | src/setjmp/powerpc/longjmp.s | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/src/setjmp/powerpc/longjmp.s b/src/setjmp/powerpc/longjmp.s new file mode 100644 index 00000000..e3740901 --- /dev/null +++ b/src/setjmp/powerpc/longjmp.s @@ -0,0 +1,47 @@ + .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 + |