[src/trunk]: src/external/cddl/osnet/dev/dtrace/mips Use NAL (nop-and-link) t...

[simonb <simonb%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/bb1382763e13
branches:  trunk
changeset: 1020309:bb1382763e13
user:      simonb <simonb%NetBSD.org@localhost>
date:      Wed Apr 07 01:54:31 2021 +0000

description:
Use NAL (nop-and-link) to get the current PC.

diffstat:

 external/cddl/osnet/dev/dtrace/mips/dtrace_isa.c |  5 ++---
 1 files changed, 2 insertions(+), 3 deletions(-)

diffs (15 lines):

diff -r 9e31752dffb7 -r bb1382763e13 external/cddl/osnet/dev/dtrace/mips/dtrace_isa.c
--- a/external/cddl/osnet/dev/dtrace/mips/dtrace_isa.c  Tue Apr 06 22:21:53 2021 +0000
+++ b/external/cddl/osnet/dev/dtrace/mips/dtrace_isa.c  Wed Apr 07 01:54:31 2021 +0000
@@ -107,9 +107,8 @@
        ra = (register_t)(intptr_t)__builtin_return_address(0);
 
                __asm __volatile(
-               "jal 99f\n"
-               "nop\n"
-               "99:\n"
+               "nal\n"
+               " nop\n"
                "move %0, $31\n" /* get ra */
                "move $31, %1\n" /* restore ra */
                : "=r" (pc)