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cmd/link: set runtime.text to the address of the first function

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In CL 240065 we changed it to set to FlagTextAddr. Normally it
is the address of the first function, except on plan9/amd64
where, as FlagTextAddr is not aligned, it is rounded up. Set it
to the actual text start address.

Fixes #41137.

Change-Id: I1bba67f5eb4e24d9f745a11350fc999ff48bff45
Reviewed-on: https://go-review.googlesource.com/c/go/+/261644
Trust: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: David du Colombier <0intro@gmail.com>
Reviewed-by: Than McIntosh <thanm@google.com>
This commit is contained in:
Cherry Zhang 2020-10-12 18:00:25 -04:00
parent 5b509d993d
commit 575ea5a87a
1 changed files with 2 additions and 2 deletions
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4
src/cmd/link/internal/ld/data.go
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@ -2188,7 +2188,7 @@ func (ctxt *Link) textaddress() {
ctxt.Textp[0] = text
}
va := uint64(*FlagTextAddr)
va := uint64(Rnd(*FlagTextAddr, int64(Funcalign)))
n := 1
sect.Vaddr = va
ntramps := 0
@ -2214,7 +2214,7 @@ func (ctxt *Link) textaddress() {
// Set the address of the start/end symbols, if not already
// (i.e. not darwin+dynlink or AIX+external, see above).
ldr.SetSymValue(etext, int64(va))
ldr.SetSymValue(text, *FlagTextAddr)
ldr.SetSymValue(text, int64(Segtext.Sections[0].Vaddr))
}
// merge tramps into Textp, keeping Textp in address order