diff options
Diffstat (limited to 'src/cmd/link/internal/ld/pcln.go')
| -rw-r--r-- | src/cmd/link/internal/ld/pcln.go | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/src/cmd/link/internal/ld/pcln.go b/src/cmd/link/internal/ld/pcln.go index 05fd302369..70e3e1284b 100644 --- a/src/cmd/link/internal/ld/pcln.go +++ b/src/cmd/link/internal/ld/pcln.go @@ -129,11 +129,10 @@ func computeDeferReturn(ctxt *Link, deferReturnSym, s loader.Sym) uint32 { for ri := 0; ri < relocs.Count(); ri++ { r := relocs.At(ri) if target.IsWasm() && r.Type() == objabi.R_ADDR { - // Wasm does not have a live variable set at the deferreturn - // call itself. Instead it has one identified by the - // resumption point immediately preceding the deferreturn. - // The wasm code has a R_ADDR relocation which is used to - // set the resumption point to PC_B. + // wasm/ssa.go generates an ARESUMEPOINT just + // before the deferreturn call. The "PC" of + // the deferreturn call is stored in the + // R_ADDR relocation on the ARESUMEPOINT. lastWasmAddr = uint32(r.Add()) } if r.Type().IsDirectCall() && (r.Sym() == deferReturnSym || ldr.IsDeferReturnTramp(r.Sym())) { |