cmd/internal/obj: set morestack arg spilling and regabi prologue on

s390x

This CL spill arg registers before calling morestack, unspill them
after morestack call. It also avoid clobbering the register that
could contain incoming argument values. Change registers on s390x to
avoid regABI arguments.

Update #40724

Change-Id: I67b20552410dd23ef0b86f14b9c5bfed9f9723a6
Reviewed-on: https://go-review.googlesource.com/c/go/+/719421
Reviewed-by: Vishwanatha HD <vishwanatha.hd@ibm.com>
Reviewed-by: Keith Randall <khr@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: David Chase <drchase@google.com>

0 files changed, 0 insertions, 0 deletions