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37 lines
1.2 KiB
Diff
37 lines
1.2 KiB
Diff
From ea90dd90688b91b280933e1543594d3d2639482e Mon Sep 17 00:00:00 2001
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From: pagran <pagran@protonmail.com>
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Date: Mon, 9 Jan 2023 13:30:00 +0100
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Subject: [PATCH 1/3] add custom magic value
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---
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cmd/link/internal/ld/pcln.go | 13 +++++++++++++
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1 file changed, 13 insertions(+)
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diff --git a/cmd/link/internal/ld/pcln.go b/cmd/link/internal/ld/pcln.go
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index 34ab86cf12..b89a4d650c 100644
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--- a/cmd/link/internal/ld/pcln.go
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+++ b/cmd/link/internal/ld/pcln.go
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@@ -249,6 +249,19 @@ func (state *pclntab) generatePCHeader(ctxt *Link) {
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if off != size {
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panic(fmt.Sprintf("pcHeader size: %d != %d", off, size))
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}
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+
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+ // Use garble prefix in variable names to minimize collision risk
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+ garbleMagicStr := os.Getenv("GARBLE_LINK_MAGIC")
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+ if garbleMagicStr == "" {
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+ panic("[garble] magic value must be set")
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+ }
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+ var garbleMagicVal uint32
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+ // Use fmt package instead of strconv to avoid importing a new package
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+ if _, err := fmt.Sscan(garbleMagicStr, &garbleMagicVal); err != nil {
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+ panic(fmt.Errorf("[garble] invalid magic value %s: %v", garbleMagicStr, err))
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+ }
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+
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+ header.SetUint32(ctxt.Arch, 0, garbleMagicVal)
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}
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state.pcheader = state.addGeneratedSym(ctxt, "runtime.pcheader", size, writeHeader)
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--
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2.40.1
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