[klibc] [klibc:master] s390: mmap: Change inline assembly to work with Clang

[klibc-bot for Ben Hutchings]

Commit-ID:  df622860136f95868a36eae578482dc7b9687f50
Gitweb:     http://git.kernel.org/?p=libs/klibc/klibc.git;a=commit;h=df622860136f95868a36eae578482dc7b9687f50
Author:     Ben Hutchings <ben at decadent.org.uk>
AuthorDate: Mon, 27 Dec 2021 19:48:29 +0100
Committer:  Ben Hutchings <ben at decadent.org.uk>
CommitDate: Mon, 27 Dec 2021 19:48:29 +0100

[klibc] s390: mmap: Change inline assembly to work with Clang

Clang rejects the operand "%b1" to svc:

    usr/klibc/arch/s390/mmap.c:61:3: error: invalid operand in inline asm: '    svc ${1:b}'

Since svc always takes an immediate operand, the "b" modifier is not
needed.  After deleting it, both Clang and gcc generate the correct
instruction "svc 90".

Signed-off-by: Ben Hutchings <ben at decadent.org.uk>

---
 usr/klibc/arch/s390/mmap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/usr/klibc/arch/s390/mmap.c b/usr/klibc/arch/s390/mmap.c
index 33312397..dfc5a845 100644
--- a/usr/klibc/arch/s390/mmap.c
+++ b/usr/klibc/arch/s390/mmap.c
@@ -58,7 +58,7 @@ void *mmap(void *addr, size_t len, int prot, int flags, int fd, off_t offset)
 	unsigned long __res;
 
 	__asm__ __volatile__ (
-		"    svc %b1\n"
+		"    svc %1\n"
 		: "=d" (__svcres)
 		: "i" (__NR_mmap),
 		  "0" (__arg1)