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runtime: fix aix/ppc64 library initialization

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AIX sets the argc and argv parameters in R14 and R15, but
_rt0_ppc64x_lib expects them to be in R3 and R4. Also, call reginit in
_rt0_ppc64x_lib.

These issues were oversights from CL 706395 which went unnoticed because
there if no LUCI aix/ppc64 builder (see #67299).

Change-Id: I93a2798739935fbcead3e6162b4b90db7e740aa5
Reviewed-on: https://go-review.googlesource.com/c/go/+/708255
Reviewed-by: Carlos Amedee <carlos@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Junyang Shao <shaojunyang@google.com>
Reviewed-by: Paul Murphy <paumurph@redhat.com>
This commit is contained in:
qmuntal 2025-10-01 10:59:53 +02:00 • committed by Quim Muntal
parent 707454b41f
commit f03c392295
2 changed files with 5 additions and 0 deletions
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3
src/runtime/asm_ppc64x.s
View file

@ -21,6 +21,9 @@ TEXT _rt0_ppc64x_lib(SB),NOSPLIT|NOFRAME,$0
MOVD R4, _rt0_ppc64x_lib_argv<>(SB) MOVD R4, _rt0_ppc64x_lib_argv<>(SB)
// Synchronous initialization. // Synchronous initialization.
MOVD $runtime·reginit(SB), R12
MOVD R12, CTR
BL (CTR)
MOVD $runtime·libpreinit(SB), R12 MOVD $runtime·libpreinit(SB), R12
MOVD R12, CTR MOVD R12, CTR
BL (CTR) BL (CTR)

2
src/runtime/rt0_aix_ppc64.s
View file

@ -42,4 +42,6 @@ TEXT _main(SB),NOSPLIT,$-8
BR (CTR) BR (CTR)
TEXT _rt0_ppc64_aix_lib(SB),NOSPLIT,$0 TEXT _rt0_ppc64_aix_lib(SB),NOSPLIT,$0
MOVD R14, R3 // argc
MOVD R15, R4 // argv
JMP _rt0_ppc64x_lib(SB) JMP _rt0_ppc64x_lib(SB)