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| author | Russ Cox <rsc@golang.org> | 2014-10-28 21:50:16 -0400 |
|---|---|---|
| committer | Russ Cox <rsc@golang.org> | 2014-10-28 21:50:16 -0400 |
| commit | 05d42f8a61328aa7ea55887f601286b597caf0da (patch) | |
| tree | 79010d336cdcf748fe4c23cbe7d8487478072c50 /src/runtime/sys_windows_386.s | |
| parent | c9851bece1a56434cf60ad6b98694a027599d1f6 (diff) | |
| download | go-05d42f8a61328aa7ea55887f601286b597caf0da.tar.gz | |
[dev.power64] cmd/5a, cmd/6a, cmd/8a, cmd/9a: make labels function-scoped
I removed support for jumping between functions years ago,
as part of doing the instruction layout for each function separately.
Given that, it makes sense to treat labels as function-scoped.
This lets each function have its own 'loop' label, for example.
Makes the assembly much cleaner and removes the last
reason anyone would reach for the 123(PC) form instead.
Note that this is on the dev.power64 branch, but it changes all
the assemblers. The change will ship in Go 1.5 (perhaps after
being ported into the new assembler).
Came up as part of CL 167730043.
LGTM=r
R=r
CC=austin, dave, golang-codereviews, minux
https://codereview.appspot.com/159670043
Diffstat (limited to 'src/runtime/sys_windows_386.s')
| -rw-r--r-- | src/runtime/sys_windows_386.s | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/src/runtime/sys_windows_386.s b/src/runtime/sys_windows_386.s index 932fe9dd2..13fb5bdc9 100644 --- a/src/runtime/sys_windows_386.s +++ b/src/runtime/sys_windows_386.s @@ -106,7 +106,7 @@ TEXT runtime·sigtramp(SB),NOSPLIT,$0-0 MOVL g_m(DX), BX MOVL m_g0(BX), BX CMPL DX, BX - JEQ sigtramp_g0 + JEQ g0 // switch to the g0 stack get_tls(BP) @@ -123,7 +123,7 @@ TEXT runtime·sigtramp(SB),NOSPLIT,$0-0 MOVL SP, 36(DI) MOVL DI, SP -sigtramp_g0: +g0: MOVL 0(CX), BX // ExceptionRecord* MOVL 4(CX), CX // Context* MOVL BX, 0(SP) @@ -383,12 +383,12 @@ TEXT runtime·usleep1(SB),NOSPLIT,$0 MOVL m_g0(BP), SI CMPL g(CX), SI - JNE usleep1_switch + JNE switch // executing on m->g0 already CALL AX - JMP usleep1_ret + JMP ret -usleep1_switch: +switch: // Switch to m->g0 stack and back. MOVL (g_sched+gobuf_sp)(SI), SI MOVL SP, -4(SI) @@ -396,7 +396,7 @@ usleep1_switch: CALL AX MOVL 0(SP), SP -usleep1_ret: +ret: get_tls(CX) MOVL g(CX), BP MOVL g_m(BP), BP |