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Diffstat (limited to 'src/pkg/runtime/asm_arm.s')
| -rw-r--r-- | src/pkg/runtime/asm_arm.s | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/pkg/runtime/asm_arm.s b/src/pkg/runtime/asm_arm.s index 024649be0..1aea9036a 100644 --- a/src/pkg/runtime/asm_arm.s +++ b/src/pkg/runtime/asm_arm.s @@ -394,6 +394,10 @@ TEXT runtime·lessstack(SB), NOSPLIT, $-4-0 // 1. grab stored LR for caller // 2. sub 4 bytes to get back to BL deferreturn // 3. B to fn +// TODO(rsc): Push things on stack and then use pop +// to load all registers simultaneously, so that a profiling +// interrupt can never see mismatched SP/LR/PC. +// (And double-check that pop is atomic in that way.) TEXT runtime·jmpdefer(SB), NOSPLIT, $0-8 MOVW 0(SP), LR MOVW $-4(LR), LR // BL deferreturn |