diff options
| author | midipix <writeonce@midipix.org> | 2015-03-08 13:23:20 -0400 |
|---|---|---|
| committer | midipix <writeonce@midipix.org> | 2015-03-08 13:23:20 -0400 |
| commit | 86062740f1e8eeb4c554055cf304dc1e0e87ea43 (patch) | |
| tree | 35d8309221f4fd2050fefbc1b3b3957a1099ce8a /src/setjmp/nt64/longjmp.s | |
| parent | 41058bd82ed2ae880c463d61e5702aef07681bf0 (diff) | |
| download | mmglue-86062740f1e8eeb4c554055cf304dc1e0e87ea43.tar.bz2 mmglue-86062740f1e8eeb4c554055cf304dc1e0e87ea43.tar.xz | |
initial commit of core port files.
signed-off by Z. Gilboa; see copying.midipix (9cd0746c) for additional information.
Diffstat (limited to 'src/setjmp/nt64/longjmp.s')
| -rw-r--r-- | src/setjmp/nt64/longjmp.s | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/src/setjmp/nt64/longjmp.s b/src/setjmp/nt64/longjmp.s new file mode 100644 index 0000000..0fcf52e --- /dev/null +++ b/src/setjmp/nt64/longjmp.s @@ -0,0 +1,28 @@ +.text +.globl __longjmp +.globl _longjmp +.globl longjmp + +__longjmp: +_longjmp: +longjmp: + test %edx, %edx # is val zero? + jne 1f # no: return val + xor $1, %edx # yes: return one + +1: + mov %edx, %eax # return value + +2: + mov 0x10(%rcx), %rbx # restore regs + mov 0x18(%rcx), %rbp + mov 0x20(%rcx), %rdi + mov 0x28(%rcx), %rsi + mov 0x30(%rcx), %r12 + mov 0x38(%rcx), %r13 + mov 0x40(%rcx), %r14 + mov 0x48(%rcx), %r15 + + mov 0x08(%rcx), %rsp # saved stack pointer + mov (%rcx), %rdx # return address + jmp *%rdx # return |