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| author | Zxilly <zxilly@outlook.com> | 2025-04-09 12:17:21 +0000 |
|---|---|---|
| committer | Cherry Mui <cherryyz@google.com> | 2025-04-09 23:38:23 -0700 |
| commit | d60a684c87104ed7836403eab74eb2be1e4a97cb (patch) | |
| tree | 07378004a26ab3645a6436bee8a86c118cc57771 /src/cmd/internal/obj | |
| parent | 7a82b6a9e1ad6ace91e53011744ffefdbf5843bc (diff) | |
| download | go-d60a684c87104ed7836403eab74eb2be1e4a97cb.tar.xz | |
cmd/internal/obj/wasm: use i64 for large return addr
Use i64 to avoid overflow when getting PC_F from the return addr.
Fixes #73246
Change-Id: I5683dccf7eada4b8536edf53e2e83116a2f6d943
GitHub-Last-Rev: 267d9a1a031868430d0af530de14229ee1ae8609
GitHub-Pull-Request: golang/go#73277
Reviewed-on: https://go-review.googlesource.com/c/go/+/663995
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Diffstat (limited to 'src/cmd/internal/obj')
| -rw-r--r-- | src/cmd/internal/obj/wasm/wasmobj.go | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/src/cmd/internal/obj/wasm/wasmobj.go b/src/cmd/internal/obj/wasm/wasmobj.go index 42e5534f3b..9a3520f319 100644 --- a/src/cmd/internal/obj/wasm/wasmobj.go +++ b/src/cmd/internal/obj/wasm/wasmobj.go @@ -1006,9 +1006,10 @@ func genWasmExportWrapper(s *obj.LSym, appendp func(p *obj.Prog, as obj.As, args // In the unwinding case, we call wasm_pc_f_loop_export to handle stack switch and rewinding, // until a normal return (non-unwinding) back to this function. p = appendp(p, AIf) - p = appendp(p, AI32Const, retAddr) - p = appendp(p, AI32Const, constAddr(16)) - p = appendp(p, AI32ShrU) + p = appendp(p, AI64Const, retAddr) + p = appendp(p, AI64Const, constAddr(16)) + p = appendp(p, AI64ShrU) + p = appendp(p, AI32WrapI64) p = appendp(p, ACall, obj.Addr{Type: obj.TYPE_MEM, Name: obj.NAME_EXTERN, Sym: wasm_pc_f_loop_export}) p = appendp(p, AEnd) |