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cmd/link: collect itablinks as a slice in moduledata

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See #14874

This change tells the linker to collect all the itablink symbols and
collect them so that moduledata can have a slice of all compiler
generated itabs.

The logic is shamelessly adapted from what is done with typelink symbols.

Change-Id: Ie93b59acf0fcba908a876d506afbf796f222dbac
Reviewed-on: https://go-review.googlesource.com/20889
Reviewed-by: Keith Randall <khr@golang.org>
This commit is contained in:
Michel Lespinasse 2016-03-17 07:00:33 -07:00
parent f00bbd5f81
commit 79688ca58f
9 changed files with 52 additions and 5 deletions
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3
src/cmd/link/internal/ld/elf.go
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@ -1740,6 +1740,7 @@ func doelf() {
relro_prefix = ".data.rel.ro"
}
Addstring(shstrtab, relro_prefix+".typelink")
Addstring(shstrtab, relro_prefix+".itablink")
Addstring(shstrtab, relro_prefix+".gosymtab")
Addstring(shstrtab, relro_prefix+".gopclntab")
@ -1751,6 +1752,7 @@ func doelf() {
Addstring(shstrtab, ".rela.text")
Addstring(shstrtab, ".rela.rodata")
Addstring(shstrtab, ".rela"+relro_prefix+".typelink")
Addstring(shstrtab, ".rela"+relro_prefix+".itablink")
Addstring(shstrtab, ".rela"+relro_prefix+".gosymtab")
Addstring(shstrtab, ".rela"+relro_prefix+".gopclntab")
Addstring(shstrtab, ".rela.noptrdata")
@ -1763,6 +1765,7 @@ func doelf() {
Addstring(shstrtab, ".rel.text")
Addstring(shstrtab, ".rel.rodata")
Addstring(shstrtab, ".rel"+relro_prefix+".typelink")
Addstring(shstrtab, ".rel"+relro_prefix+".itablink")
Addstring(shstrtab, ".rel"+relro_prefix+".gosymtab")
Addstring(shstrtab, ".rel"+relro_prefix+".gopclntab")
Addstring(shstrtab, ".rel.noptrdata")