diff options
Diffstat (limited to 'src/runtime/sys_windows_386.s')
| -rw-r--r-- | src/runtime/sys_windows_386.s | 79 |
1 files changed, 11 insertions, 68 deletions
diff --git a/src/runtime/sys_windows_386.s b/src/runtime/sys_windows_386.s index ef8a3dd3c2..b3972ac78d 100644 --- a/src/runtime/sys_windows_386.s +++ b/src/runtime/sys_windows_386.s @@ -347,60 +347,11 @@ TEXT runtime·setldt(SB),NOSPLIT,$0 MOVL CX, 0x14(FS) RET -// onosstack calls fn on OS stack. -// func onosstack(fn unsafe.Pointer, arg uint32) -TEXT runtime·onosstack(SB),NOSPLIT,$0 - MOVL fn+0(FP), AX // to hide from 8l - MOVL arg+4(FP), BX - - // Execute call on m->g0 stack, in case we are not actually - // calling a system call wrapper, like when running under WINE. - get_tls(CX) - CMPL CX, $0 - JNE 3(PC) - // Not a Go-managed thread. Do not switch stack. - CALL AX - RET - - MOVL g(CX), BP - MOVL g_m(BP), BP - - // leave pc/sp for cpu profiler - MOVL (SP), SI - MOVL SI, m_libcallpc(BP) - MOVL g(CX), SI - MOVL SI, m_libcallg(BP) - // sp must be the last, because once async cpu profiler finds - // all three values to be non-zero, it will use them - LEAL fn+0(FP), SI - MOVL SI, m_libcallsp(BP) - - MOVL m_g0(BP), SI - CMPL g(CX), SI - JNE switch - // executing on m->g0 already - CALL AX - JMP ret - -switch: - // Switch to m->g0 stack and back. - MOVL (g_sched+gobuf_sp)(SI), SI - MOVL SP, -4(SI) - LEAL -4(SI), SP - CALL AX - MOVL 0(SP), SP - -ret: - get_tls(CX) - MOVL g(CX), BP - MOVL g_m(BP), BP - MOVL $0, m_libcallsp(BP) - RET - -// Runs on OS stack. duration (in 100ns units) is in BX. -TEXT runtime·usleep2(SB),NOSPLIT,$20 - // Want negative 100ns units. - NEGL BX +// Runs on OS stack. +// duration (in -100ns units) is in dt+0(FP). +// g may be nil. +TEXT runtime·usleep2(SB),NOSPLIT,$20-4 + MOVL dt+0(FP), BX MOVL $-1, hi-4(SP) MOVL BX, lo-8(SP) LEAL lo-8(SP), BX @@ -413,17 +364,15 @@ TEXT runtime·usleep2(SB),NOSPLIT,$20 MOVL BP, SP RET -// Runs on OS stack. duration (in 100ns units) is in BX. -TEXT runtime·usleep2HighRes(SB),NOSPLIT,$36 - get_tls(CX) - CMPL CX, $0 - JE gisnotset - - // Want negative 100ns units. - NEGL BX +// Runs on OS stack. +// duration (in -100ns units) is in dt+0(FP). +// g is valid. +TEXT runtime·usleep2HighRes(SB),NOSPLIT,$36-4 + MOVL dt+0(FP), BX MOVL $-1, hi-4(SP) MOVL BX, lo-8(SP) + get_tls(CX) MOVL g(CX), CX MOVL g_m(CX), CX MOVL (m_mOS+mOS_highResTimer)(CX), CX @@ -452,12 +401,6 @@ TEXT runtime·usleep2HighRes(SB),NOSPLIT,$36 RET -gisnotset: - // TLS is not configured. Call usleep2 instead. - MOVL $runtime·usleep2(SB), AX - CALL AX - RET - // Runs on OS stack. TEXT runtime·switchtothread(SB),NOSPLIT,$0 MOVL SP, BP |