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MIPS: Remove GCC_IMM_ASM & GCC_REG_ACCUM macros

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asm/compiler.h defined GCC_IMM_ASM & GCC_REG_ACCUM macros, both of which
are defined differently for GCC pre-3.4 or GCC 3.4 & higher. We only
support building with GCC 4.6 & higher since commit cafa0010cd ("Raise
the minimum required gcc version to 4.6"), which makes the pre-3.4
definition dead code.

Rather than leave the macro definitions around, inline the GCC 3.4 &
higher definitions into the single file that uses them & remove the
macros entirely.

Signed-off-by: Paul Burton <paul.burton@mips.com>
Patchwork: https://patchwork.linux-mips.org/patch/21000/
Cc: linux-mips@linux-mips.org
This commit is contained in:
Paul Burton 2018-11-07 23:05:07 +00:00
parent 52d6d05575
commit 57810ecb58
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GPG key ID: 3EA79FACB57500DD
2 changed files with 2 additions and 10 deletions
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8
arch/mips/include/asm/compiler.h
View file

@ -43,14 +43,6 @@
#undef barrier_before_unreachable
#define barrier_before_unreachable() asm volatile(".insn")
#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)
#define GCC_IMM_ASM() "n"
#define GCC_REG_ACCUM "$0"
#else
#define GCC_IMM_ASM() "rn"
#define GCC_REG_ACCUM "accum"
#endif
#ifdef CONFIG_CPU_MIPSR6
/* All MIPS R6 toolchains support the ZC constrain */
#define GCC_OFF_SMALL_ASM() "ZC"

4
arch/mips/kernel/cpu-bugs64.c
View file

@ -39,7 +39,7 @@ static inline void align_mod(const int align, const int mod)
".endr\n\t"
".set pop"
:
: GCC_IMM_ASM() (align), GCC_IMM_ASM() (mod));
: "n"(align), "n"(mod));
}
static inline void mult_sh_align_mod(long *v1, long *v2, long *w,
@ -92,7 +92,7 @@ static inline void mult_sh_align_mod(long *v1, long *v2, long *w,
".set pop"
: "=&r" (lv1), "=r" (lw)
: "r" (m1), "r" (m2), "r" (s), "I" (0)
: "hi", "lo", GCC_REG_ACCUM);
: "hi", "lo", "$0");
/* We have to use single integers for m1 and m2 and a double
* one for p to be sure the mulsidi3 gcc's RTL multiplication
* instruction has the workaround applied. Older versions of