From: Manuel Lauss <manuel.la...@gmail.com>
commit 8535f2ba0a9b971df62a5890699b9dfe2e0d5580 upstream
MIPS: math-emu: do not use bools for arithmetic
GCC-7 complains about a boolean value being used with an arithmetic
AND:
arch/mips/math-emu/cp1emu.c: In function 'cop1Emulate':
arch/mips/math-emu/cp1emu.c:838:14: warning: '~' on a boolean expression
[-Wbool-operation]
fpr = (x) & ~(cop1_64bit(xcp) == 0); \
^
arch/mips/math-emu/cp1emu.c:1068:3: note: in expansion of macro 'DITOREG'
DITOREG(dval, MIPSInst_RT(ir));
^~~~~~~
arch/mips/math-emu/cp1emu.c:838:14: note: did you mean to use logical not?
fpr = (x) & ~(cop1_64bit(xcp) == 0); \
Since cop1_64bit() returns and int, just flip the LSB.
Suggested-by: Maciej W. Rozycki <ma...@imgtec.com>
Signed-off-by: Manuel Lauss <manuel.la...@gmail.com>
Reviewed-by: Maciej W. Rozycki <ma...@imgtec.com>
Cc: linux-m...@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/17058/
Signed-off-by: Ralf Baechle <r...@linux-mips.org>
Signed-off-by: Hongzhi Song <hongzhi.s...@windriver.com>
---
arch/mips/math-emu/cp1emu.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/mips/math-emu/cp1emu.c b/arch/mips/math-emu/cp1emu.c
index add2320..ad20b69 100644
--- a/arch/mips/math-emu/cp1emu.c
+++ b/arch/mips/math-emu/cp1emu.c
@@ -830,12 +830,12 @@ do {
\
} while (0)
#define DIFROMREG(di, x) \
- ((di) = get_fpr64(&ctx->fpr[(x) & ~(cop1_64bit(xcp) == 0)], 0))
+ ((di) = get_fpr64(&ctx->fpr[(x) & ~(cop1_64bit(xcp) ^ 1)], 0))
#define DITOREG(di, x) \
do { \
unsigned fpr, i; \
- fpr = (x) & ~(cop1_64bit(xcp) == 0); \
+ fpr = (x) & ~(cop1_64bit(xcp) ^ 1); \
set_fpr64(&ctx->fpr[fpr], 0, di); \
for (i = 1; i < ARRAY_SIZE(ctx->fpr[x].val64); i++) \
set_fpr64(&ctx->fpr[fpr], i, 0); \
--
2.8.1
--
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