diff options
Diffstat (limited to 'libc-top-half/musl/src/setjmp/powerpc64/longjmp.s')
| -rw-r--r-- | libc-top-half/musl/src/setjmp/powerpc64/longjmp.s | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/libc-top-half/musl/src/setjmp/powerpc64/longjmp.s b/libc-top-half/musl/src/setjmp/powerpc64/longjmp.s new file mode 100644 index 0000000..81d45ff --- /dev/null +++ b/libc-top-half/musl/src/setjmp/powerpc64/longjmp.s @@ -0,0 +1,81 @@ + .global _longjmp + .global longjmp + .type _longjmp,@function + .type longjmp,@function +_longjmp: +longjmp: + # 0) move old return address into the link register + ld 0, 0*8(3) + mtlr 0 + # 1) restore cr + ld 0, 1*8(3) + mtcr 0 + # 2) restore SP + ld 1, 2*8(3) + # 3) restore TOC into both r2 and the caller's stack. + # Which location is required depends on whether setjmp was called + # locally or non-locally, but it's always safe to restore to both. + ld 2, 3*8(3) + std 2, 24(1) + # 4) restore r14-r31 + ld 14, 4*8(3) + ld 15, 5*8(3) + ld 16, 6*8(3) + ld 17, 7*8(3) + ld 18, 8*8(3) + ld 19, 9*8(3) + ld 20, 10*8(3) + ld 21, 11*8(3) + ld 22, 12*8(3) + ld 23, 13*8(3) + ld 24, 14*8(3) + ld 25, 15*8(3) + ld 26, 16*8(3) + ld 27, 17*8(3) + ld 28, 18*8(3) + ld 29, 19*8(3) + ld 30, 20*8(3) + ld 31, 21*8(3) + # 5) restore floating point registers f14-f31 + lfd 14, 22*8(3) + lfd 15, 23*8(3) + lfd 16, 24*8(3) + lfd 17, 25*8(3) + lfd 18, 26*8(3) + lfd 19, 27*8(3) + lfd 20, 28*8(3) + lfd 21, 29*8(3) + lfd 22, 30*8(3) + lfd 23, 31*8(3) + lfd 24, 32*8(3) + lfd 25, 33*8(3) + lfd 26, 34*8(3) + lfd 27, 35*8(3) + lfd 28, 36*8(3) + lfd 29, 37*8(3) + lfd 30, 38*8(3) + lfd 31, 39*8(3) + + # 6) restore vector registers v20-v31 + addi 3, 3, 40*8 + lvx 20, 0, 3 ; addi 3, 3, 16 + lvx 21, 0, 3 ; addi 3, 3, 16 + lvx 22, 0, 3 ; addi 3, 3, 16 + lvx 23, 0, 3 ; addi 3, 3, 16 + lvx 24, 0, 3 ; addi 3, 3, 16 + lvx 25, 0, 3 ; addi 3, 3, 16 + lvx 26, 0, 3 ; addi 3, 3, 16 + lvx 27, 0, 3 ; addi 3, 3, 16 + lvx 28, 0, 3 ; addi 3, 3, 16 + lvx 29, 0, 3 ; addi 3, 3, 16 + lvx 30, 0, 3 ; addi 3, 3, 16 + lvx 31, 0, 3 + + # 7) return r4 ? r4 : 1 + mr 3, 4 + cmpwi cr7, 4, 0 + bne cr7, 1f + li 3, 1 +1: + blr + |