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package/uclibc: backport patch to remove asm constraint on sparc

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uClibc-ng don't build with gcc 9.1 [1] on sparc due to a new check
that "catch illegal asm constraint usage" [2]. This issue has been
fixed in upstream uclibc-ng, so we simply backport the fix.

Signed-off-by: Romain Naour <romain.naour@gmail.com>
Cc: Waldemar Brodkorb <wbx@openadk.org>
Signed-off-by: Giulio Benetti <giulio.benetti@micronovasrl.com>
[Thomas: backport the patch that was applied to upstream uclibc-ng]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
This commit is contained in:
Romain Naour 2019-06-20 12:07:13 +02:00 committed by Thomas Petazzoni
parent 1713c3c344
commit 08d25f3942
1 changed files with 40 additions and 0 deletions
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40
package/uclibc/0004-sparc-remove-asm-constraint.patch Normal file
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@ -0,0 +1,40 @@
From 75a1a2a9fec8a310a18ff7d63ead95f3a0d1b11b Mon Sep 17 00:00:00 2001
From: Romain Naour <romain.naour@gmail.com>
Date: Fri, 24 May 2019 12:42:04 +0200
Subject: [PATCH] sparc: remove asm constraint
uClibc-ng don't build with gcc 9.1 [1] due to a new check that
"catch illegal asm constraint usage" [2].
gcc 9.1 print this error:
"invalid hard register usage between earlyclobber operand and input operand"
The asm constraint is present in uClibc since it support sparc (back in 2002)[3].
Note: There is no such constraint is Glibc counterpart code [4].
[1] https://gitlab.com/kubu93/toolchains-builder/-/jobs/205435757
[2] https://github.com/gcc-mirror/gcc/commit/b782636f28f5c378897c238081d28d7a4a6ca578
[3] https://cgit.uclibc-ng.org/cgi/cgit/uclibc-ng.git/commit/?id=3b6d086531102b6d09ce852feb1e370d5dca3ce9
[4]
+https://sourceware.org/git/?p=glibc.git;a=blob;f=sysdeps/unix/sysv/linux/sparc/sysdep.h;h=981b2a26b7a91093f821c97876
+e55bc4be2d9f8a;hb=HEAD
(cherry picked from commit c2eaf6c30d930b65a8bcf5f912ef8873a6f4eb20)
Signed-off-by: Romain Naour <romain.naour@gmail.com>
---
libc/sysdeps/linux/sparc/bits/syscalls.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libc/sysdeps/linux/sparc/bits/syscalls.h b/libc/sysdeps/linux/sparc/bits/syscalls.h
index 75af7a157..28edc0568 100644
--- a/libc/sysdeps/linux/sparc/bits/syscalls.h
+++ b/libc/sysdeps/linux/sparc/bits/syscalls.h
@@ -33,7 +33,7 @@
register long __g1 __asm__("g1") = sys_num; \
LOAD_ARGS_##nr(args) \
__asm__ __volatile__( __SYSCALL_STRING \
- : "=r" (__res), "=&r" (__o0) \
+ : "=r" (__res), "=r" (__o0) \
: "1" (__o0) ASM_ARGS_##nr, "r" (__g1) \
: __SYSCALL_CLOBBERS ); \
} \
--
2.21.0