From: wei.guo.simon@gmail.com
To: Anshuman Khandual <khandual@linux.vnet.ibm.com>
Cc: linuxppc-dev@lists.ozlabs.org,
Michael Ellerman <mpe@ellerman.id.au>,
Simon Guo <wei.guo.simon@gmail.com>
Subject: [PATCH] selftests/powerpc: fix build error in powerpc ptrace selftests.
Date: Fri, 1 Sep 2017 10:17:14 +0800 [thread overview]
Message-ID: <1504232234-4161-1-git-send-email-wei.guo.simon@gmail.com> (raw)
From: Simon Guo <wei.guo.simon@gmail.com>
GCC 7 will take "r2" in clobber list as an error will it will get following
build errors for powerpc ptrace selftests even with -fno-pic option:
ptrace-tm-vsx.c: In function ‘tm_vsx’:
ptrace-tm-vsx.c:42:2: error: PIC register clobbered by ‘r2’ in ‘asm’
asm __volatile__(
^~~
make[1]: *** [ptrace-tm-vsx] Error 1
ptrace-tm-spd-vsx.c: In function ‘tm_spd_vsx’:
ptrace-tm-spd-vsx.c:55:2: error: PIC register clobbered by ‘r2’ in ‘asm’
asm __volatile__(
^~~
make[1]: *** [ptrace-tm-spd-vsx] Error 1
ptrace-tm-spr.c: In function ‘tm_spr’:
ptrace-tm-spr.c:46:2: error: PIC register clobbered by ‘r2’ in ‘asm’
asm __volatile__(
^~~
This patch fix the build error by removing "r2" out of clobber list.
Reported-by: Seth Forshee <seth.forshee@canonical.com>
Signed-off-by: Simon Guo <wei.guo.simon@gmail.com>
Tested-by: Seth Forshee <seth.forshee@canonical.com>
---
tools/testing/selftests/powerpc/ptrace/Makefile | 2 +-
tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-vsx.c | 4 ++--
tools/testing/selftests/powerpc/ptrace/ptrace-tm-spr.c | 3 +--
tools/testing/selftests/powerpc/ptrace/ptrace-tm-vsx.c | 2 +-
4 files changed, 5 insertions(+), 6 deletions(-)
diff --git a/tools/testing/selftests/powerpc/ptrace/Makefile b/tools/testing/selftests/powerpc/ptrace/Makefile
index fe6bc60..c836f6d 100644
--- a/tools/testing/selftests/powerpc/ptrace/Makefile
+++ b/tools/testing/selftests/powerpc/ptrace/Makefile
@@ -6,7 +6,7 @@ include ../../lib.mk
all: $(TEST_PROGS)
-CFLAGS += -m64 -I../../../../../usr/include -I../tm -mhtm
+CFLAGS += -m64 -I../../../../../usr/include -I../tm -mhtm -fno-pic
$(TEST_PROGS): ../harness.c ../utils.c ../lib/reg.S ptrace.h
diff --git a/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-vsx.c b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-vsx.c
index 0df3c23..277dade 100644
--- a/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-vsx.c
+++ b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-vsx.c
@@ -79,8 +79,8 @@ void tm_spd_vsx(void)
: [res] "=r" (result), [texasr] "=r" (texasr)
: [fp_load] "r" (fp_load), [fp_load_ckpt] "r" (fp_load_ckpt),
[sprn_texasr] "i" (SPRN_TEXASR)
- : "memory", "r0", "r1", "r2", "r3", "r4",
- "r8", "r9", "r10", "r11"
+ : "memory", "r0", "r1", "r3", "r4",
+ "r7", "r8", "r9", "r10", "r11"
);
if (result) {
diff --git a/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spr.c b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spr.c
index 94e57cb..51427a2 100644
--- a/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spr.c
+++ b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spr.c
@@ -76,8 +76,7 @@ void tm_spr(void)
: [tfhar] "=r" (tfhar), [res] "=r" (result),
[texasr] "=r" (texasr), [cptr1] "=r" (cptr1)
: [sprn_texasr] "i" (SPRN_TEXASR)
- : "memory", "r0", "r1", "r2", "r3", "r4",
- "r8", "r9", "r10", "r11", "r31"
+ : "memory", "r0", "r8", "r31"
);
/* There are 2 32bit instructions before tbegin. */
diff --git a/tools/testing/selftests/powerpc/ptrace/ptrace-tm-vsx.c b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-vsx.c
index b4081e2..17c23ca 100644
--- a/tools/testing/selftests/powerpc/ptrace/ptrace-tm-vsx.c
+++ b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-vsx.c
@@ -67,7 +67,7 @@ void tm_vsx(void)
: [res] "=r" (result), [texasr] "=r" (texasr)
: [fp_load] "r" (fp_load), [fp_load_ckpt] "r" (fp_load_ckpt),
[sprn_texasr] "i" (SPRN_TEXASR), [cptr1] "r" (&cptr[1])
- : "memory", "r0", "r1", "r2", "r3", "r4",
+ : "memory", "r0", "r1", "r3", "r4",
"r7", "r8", "r9", "r10", "r11"
);
--
1.8.3.1
next reply other threads:[~2017-09-01 2:17 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-01 2:17 wei.guo.simon [this message]
2017-10-10 10:10 ` [PATCH] selftests/powerpc: fix build error in powerpc ptrace selftests Michael Ellerman
2017-10-09 20:18 ` Simon Guo
2017-12-12 11:39 ` Michael Ellerman
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