[go] cmd/link: enable external linking on ppc64/linux

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Paul Murphy (Gerrit)

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May 13, 2026, 9:18:21 AM (3 days ago) May 13

to goph...@pubsubhelper.golang.org, golang-...@googlegroups.com, Dmitri Shuralyov, Dmitri Shuralyov, Jayanth Krishnamurthy, golang...@luci-project-accounts.iam.gserviceaccount.com, Keith Randall, Keith Randall, Archana Ravindar, Gopher Robot, Cherry Mui, golang-co...@googlegroups.com

Paul Murphy submitted the change

Unreviewed changes

18 is the latest approved patch-set.
No files were changed between the latest approved patch-set and the submitted one.

Change information

Commit message:

all: turn on cgo/external linking for linux/ppc64

ppc64/linux has been switched to the ELFv2 abi, the same as
ppc64le/linux. Turn on cgo features and remove many of the
hacks which disabled external linking. There should be no
difference between ppc64le and ppc64 linux beyond endianness.

The ppc64x Go to ELF relocation code is cleaned up to simplify
and enable bi-endian support.

Cq-Include-Trybots: luci.golang.try:gotip-linux-ppc64_power10,gotip-linux-ppc64_power8,gotip-linux-ppc64le_power8,gotip-linux-ppc64le_power10,gotip-linux-ppc64le_power9,gotip-openbsd-ppc64

Change-Id: I8f553a8eae067f93ee395c219e20eabd4aeb67c3

Reviewed-on: https://go-review.googlesource.com/c/go/+/770240

Reviewed-by: Keith Randall <k...@google.com>

Reviewed-by: Keith Randall <k...@golang.org>

Reviewed-by: Archana Ravindar <arav...@redhat.com>

Reviewed-by: Jayanth Krishnamurthy <jayanth.kr...@ibm.com>

LUCI-TryBot-Result: golang...@luci-project-accounts.iam.gserviceaccount.com <golang...@luci-project-accounts.iam.gserviceaccount.com>

Reviewed-by: Dmitri Shuralyov <dmit...@google.com>

Files:

R src/cmd/cgo/internal/test/callstub_linux_ppc64x.go
R src/cmd/cgo/internal/test/linux_ppc64x_test.go
R src/cmd/cgo/internal/test/stubtest_linux_ppc64x.S
M src/cmd/compile/internal/noder/reader.go
M src/cmd/compile/internal/ssa/regalloc.go
M src/cmd/compile/internal/ssagen/abi.go
M src/cmd/dist/build.go
M src/cmd/dist/test.go
M src/cmd/link/internal/ld/config.go
M src/cmd/link/internal/ld/dwarf_test.go
M src/cmd/link/internal/ppc64/asm.go
M src/cmd/link/internal/ppc64/obj.go
M src/cmd/link/link_test.go
M src/internal/platform/supported.go
M src/internal/platform/zosarch.go
M src/runtime/asm_ppc64x.s
M src/runtime/cgo/gcc_sigaction.c
M src/runtime/cgo/sigaction.go
M src/runtime/cgo_sigaction.go
M src/runtime/crash_cgo_test.go
M src/runtime/debug_test.go
M src/runtime/debugcall.go
R src/runtime/export_debug_ppc64x_test.go
M src/runtime/export_debug_test.go
M src/runtime/sigaction.go
D src/runtime/stubs_ppc64.go
M src/runtime/sys_linux_ppc64x.s

Change size: M

Delta: 27 files changed, 106 insertions(+), 135 deletions(-)

Branch: refs/heads/master

Submit Requirements:

Code-Review: +1 by Dmitri Shuralyov, +2 by Keith Randall, +2 by Archana Ravindar, +1 by Keith Randall, +1 by Jayanth Krishnamurthy
TryBots-Pass: LUCI-TryBot-Result+1 by golang...@luci-project-accounts.iam.gserviceaccount.com

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