diff options
Diffstat (limited to 'src/runtime/mkpreempt.go')
| -rw-r--r-- | src/runtime/mkpreempt.go | 14 |
1 files changed, 2 insertions, 12 deletions
diff --git a/src/runtime/mkpreempt.go b/src/runtime/mkpreempt.go index c2e14cdcd6..76237bc31b 100644 --- a/src/runtime/mkpreempt.go +++ b/src/runtime/mkpreempt.go @@ -189,7 +189,6 @@ func (l *layout) restore() { func gen386() { p("PUSHFL") - // Save general purpose registers. var l = layout{sp: "SP"} for _, reg := range regNames386 { @@ -199,12 +198,6 @@ func gen386() { l.add("MOVL", reg, 4) } - // Save the 387 state. - l.addSpecial( - "FSAVE %d(SP)\nFLDCW runtime·controlWord64(SB)", - "FRSTOR %d(SP)", - 108) - // Save SSE state only if supported. lSSE := layout{stack: l.stack, sp: "SP"} for i := 0; i < 8; i++ { @@ -355,12 +348,9 @@ func genARM64() { p("MOVD R29, -8(RSP)") // save frame pointer (only used on Linux) p("SUB $8, RSP, R29") // set up new frame pointer p("#endif") - // On darwin, save the LR again after decrementing SP. We run the - // signal handler on the G stack (as it doesn't support SA_ONSTACK), + // On iOS, save the LR again after decrementing SP. We run the + // signal handler on the G stack (as it doesn't support sigaltstack), // so any writes below SP may be clobbered. - p("#ifdef GOOS_darwin") - p("MOVD R30, (RSP)") - p("#endif") p("#ifdef GOOS_ios") p("MOVD R30, (RSP)") p("#endif") |