diff options
| author | Taru Karttunen <taruti@taruti.net> | 2011-03-30 15:46:40 +0300 |
|---|---|---|
| committer | Taru Karttunen <taruti@taruti.net> | 2011-03-30 15:46:40 +0300 |
| commit | e5888a1ffdae813d7575f5fb02275c6bb07e5199 (patch) | |
| tree | d8d51eac403f07814b9e936eed0c9a79195e2450 /sys/src/libc/sparc/setjmp.s | |
Import sources from 2011-03-30 iso image
Diffstat (limited to 'sys/src/libc/sparc/setjmp.s')
| -rwxr-xr-x | sys/src/libc/sparc/setjmp.s | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/sys/src/libc/sparc/setjmp.s b/sys/src/libc/sparc/setjmp.s new file mode 100755 index 000000000..da8e7e63b --- /dev/null +++ b/sys/src/libc/sparc/setjmp.s @@ -0,0 +1,25 @@ +TEXT setjmp(SB), 1, $0 + + MOVW R1, (R7) + MOVW R15, 4(R7) + MOVW $0, R7 + RETURN + +TEXT longjmp(SB), 1, $0 + + MOVW R7, R8 + MOVW r+4(FP), R7 + CMP R7, R0 + BNE ok /* ansi: "longjmp(0) => longjmp(1)" */ + MOVW $1, R7 /* bless their pointed heads */ +ok: MOVW (R8), R1 + MOVW 4(R8), R15 + RETURN + +/* + * trampoline functions because the kernel smashes r7 + * in the uregs given to notejmp + */ +TEXT __noterestore(SB), 1, $-4 + MOVW R8, R7 + JMP (R9) |