diff options
| author | Masahiro Yamada <masahiroy@kernel.org> | 2023-06-12 00:50:50 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-07-27 08:37:18 +0200 |
| commit | c182d87c67e2ae57917a9908abb6cb1d3e88cbdd (patch) | |
| tree | 8b2abc1dd977f448c43c724dc79b538d5c7064ea /arch/arc | |
| parent | 02dc8e8bdbe4412cfcf17ee3873e63fa5a55b957 (diff) | |
ARC: define ASM_NL and __ALIGN(_STR) outside #ifdef __ASSEMBLY__ guard
[ Upstream commit 92e2921eeafdfca9acd9b83f07d2b7ca099bac24 ]
ASM_NL is useful not only in *.S files but also in .c files for using
inline assembler in C code.
On ARC, however, ASM_NL is evaluated inconsistently. It is expanded to
a backquote (`) in *.S files, but a semicolon (;) in *.c files because
arch/arc/include/asm/linkage.h defines it inside #ifdef __ASSEMBLY__,
so the definition for C code falls back to the default value defined in
include/linux/linkage.h.
If ASM_NL is used in inline assembler in .c files, it will result in
wrong assembly code because a semicolon is not an instruction separator,
but the start of a comment for ARC.
Move ASM_NL (also __ALIGN and __ALIGN_STR) out of the #ifdef.
Fixes: 9df62f054406 ("arch: use ASM_NL instead of ';' for assembler new line character in the macro")
Fixes: 8d92e992a785 ("ARC: define __ALIGN_STR and __ALIGN symbols for ARC")
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'arch/arc')
| -rw-r--r-- | arch/arc/include/asm/linkage.h | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/arc/include/asm/linkage.h b/arch/arc/include/asm/linkage.h index fe19f1d412e7..284fd513d7c6 100644 --- a/arch/arc/include/asm/linkage.h +++ b/arch/arc/include/asm/linkage.h @@ -8,6 +8,10 @@ #include <asm/dwarf.h> +#define ASM_NL ` /* use '`' to mark new line in macro */ +#define __ALIGN .align 4 +#define __ALIGN_STR __stringify(__ALIGN) + #ifdef __ASSEMBLY__ .macro ST2 e, o, off @@ -28,10 +32,6 @@ #endif .endm -#define ASM_NL ` /* use '`' to mark new line in macro */ -#define __ALIGN .align 4 -#define __ALIGN_STR __stringify(__ALIGN) - /* annotation for data we want in DCCM - if enabled in .config */ .macro ARCFP_DATA nm #ifdef CONFIG_ARC_HAS_DCCM |