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| author | Michael Stapelberg <michael@stapelberg.de> | 2013-03-23 11:28:53 +0100 |
|---|---|---|
| committer | Michael Stapelberg <michael@stapelberg.de> | 2013-03-23 11:28:53 +0100 |
| commit | b39e15dde5ec7b96c15da9faf4ab5892501c1aae (patch) | |
| tree | 718cede1f6ca97d082c6c40b7dc3f4f6148253c0 /src/pkg/runtime/sys_plan9_386.s | |
| parent | 04b08da9af0c450d645ab7389d1467308cfc2db8 (diff) | |
| download | golang-upstream/1.1_hg20130323.tar.gz | |
Imported Upstream version 1.1~hg20130323upstream/1.1_hg20130323
Diffstat (limited to 'src/pkg/runtime/sys_plan9_386.s')
| -rw-r--r-- | src/pkg/runtime/sys_plan9_386.s | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/src/pkg/runtime/sys_plan9_386.s b/src/pkg/runtime/sys_plan9_386.s index 3385b083a..1f860a961 100644 --- a/src/pkg/runtime/sys_plan9_386.s +++ b/src/pkg/runtime/sys_plan9_386.s @@ -170,3 +170,30 @@ TEXT runtime·sigtramp(SB),7,$0 // Only used by the 64-bit runtime. TEXT runtime·setfpmasks(SB),7,$0 RET + +#define ERRMAX 128 /* from os_plan9.h */ + +// func errstr() String +// Only used by package syscall. +// Grab error string due to a syscall made +// in entersyscall mode, without going +// through the allocator (issue 4994). +// See ../syscall/asm_plan9_386.s:/·Syscall/ +TEXT runtime·errstr(SB),7,$0 + get_tls(AX) + MOVL m(AX), BX + MOVL m_errstr(BX), CX + MOVL CX, 4(SP) + MOVL $ERRMAX, 8(SP) + MOVL $41, AX + INT $64 + + // syscall requires caller-save + MOVL 4(SP), CX + + // push the argument + PUSHL CX + CALL runtime·findnull(SB) + POPL CX + MOVL AX, 8(SP) + RET |