diff options
Diffstat (limited to 'src/setjmp/powerpc64/setjmp.s')
| -rw-r--r-- | src/setjmp/powerpc64/setjmp.s | 21 |
1 files changed, 16 insertions, 5 deletions
diff --git a/src/setjmp/powerpc64/setjmp.s b/src/setjmp/powerpc64/setjmp.s index d16d4bae..37683fda 100644 --- a/src/setjmp/powerpc64/setjmp.s +++ b/src/setjmp/powerpc64/setjmp.s @@ -1,24 +1,35 @@ - .global ___setjmp - .hidden ___setjmp .global __setjmp .global _setjmp .global setjmp .type __setjmp,@function .type _setjmp,@function .type setjmp,@function -___setjmp: __setjmp: _setjmp: setjmp: + ld 5, 24(1) # load from the TOC slot in the caller's stack frame + b __setjmp_toc + + .localentry __setjmp,.-__setjmp + .localentry _setjmp,.-_setjmp + .localentry setjmp,.-setjmp + mr 5, 2 + + .global __setjmp_toc + .hidden __setjmp_toc + # same as normal setjmp, except TOC pointer to save is provided in r5. + # r4 would normally be the 2nd parameter, but we're using r5 to simplify calling from sigsetjmp. + # solves the problem of knowing whether to save the TOC pointer from r2 or the caller's stack frame. +__setjmp_toc: # 0) store IP into 0, then into the jmpbuf pointed to by r3 (first arg) mflr 0 std 0, 0*8(3) # 1) store cr mfcr 0 std 0, 1*8(3) - # 2) store r1-r2 (SP and TOC) + # 2) store SP and TOC std 1, 2*8(3) - std 2, 3*8(3) + std 5, 3*8(3) # 3) store r14-31 std 14, 4*8(3) std 15, 5*8(3) |