| 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 |
| |
