diff options
| author | Sebastian Nickolls <sebastian.nickolls@arm.com> | 2024-08-13 11:47:40 +0100 |
|---|---|---|
| committer | Cherry Mui <cherryyz@google.com> | 2024-08-14 18:19:53 +0000 |
| commit | 3e3ce20df87b2de86fbcbbad863b07b1a133e879 (patch) | |
| tree | d8a88ae182b5f6ab939edeb8bf67eeff9cf6b172 /src/cmd/internal/obj | |
| parent | b2cdaf73469d7f15181b3abfb7b168475375c373 (diff) | |
| download | go-3e3ce20df87b2de86fbcbbad863b07b1a133e879.tar.xz | |
cmd/internal/obj/arm64: Emit UDF instruction for undefined Prog nodes
UDF provides a stronger guarantee for generating the Undefined
Instruction exception than the current value being emitted.
Change-Id: I234cd70ce04f21311959c1061ae24992438105f8
Reviewed-on: https://go-review.googlesource.com/c/go/+/605155
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Carlos Amedee <carlos@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Diffstat (limited to 'src/cmd/internal/obj')
| -rw-r--r-- | src/cmd/internal/obj/arm64/asm7.go | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/cmd/internal/obj/arm64/asm7.go b/src/cmd/internal/obj/arm64/asm7.go index 178c83c0bc..bd2bd037ba 100644 --- a/src/cmd/internal/obj/arm64/asm7.go +++ b/src/cmd/internal/obj/arm64/asm7.go @@ -5338,10 +5338,10 @@ func (c *ctxt7) asmout(p *obj.Prog, o *Optab, out []uint32) { // This is supposed to be something that stops execution. // It's not supposed to be reached, ever, but if it is, we'd // like to be able to tell how we got there. Assemble as - // 0xbea71700 which is guaranteed to raise undefined instruction + // UDF which is guaranteed to raise the undefined instruction // exception. case 90: - o1 = 0xbea71700 + o1 = 0x0 case 91: /* prfm imm(Rn), <prfop | $imm5> */ imm := uint32(p.From.Offset) |