Using .set mips3/32/64 without .set push/pop is fragile. This patch solves this issue by sync'ing the inline-asm functions with the latest Linux ones.
Signed-off-by: Stefan Roese <s...@denx.de>
---
arch/mips/include/asm/mipsregs.h | 44 +++++++++++++++++++-------------
1 file changed, 26 insertions(+), 18 deletions(-)
diff --git a/arch/mips/include/asm/mipsregs.h b/arch/mips/include/asm/mipsregs.h
index 459ef43fa6..bf09e35e16 100644
--- a/arch/mips/include/asm/mipsregs.h
+++ b/arch/mips/include/asm/mipsregs.h
@@ -934,9 +934,10 @@ do {
\
: "=r" (__res)); \
else \
__asm__ __volatile__( \
+ ".set\tpush\n\t" \
".set\tmips32\n\t" \
"mfc0\t%0, " #source ", " #sel "\n\t" \
- ".set\tmips0\n\t" \
+ ".set\tpop\n\t" \
: "=r" (__res)); \
__res; \
})
@@ -947,15 +948,17 @@ do {
\
__res = __read_64bit_c0_split(source, sel); \
else if (sel == 0) \
__asm__ __volatile__( \
+ ".set\tpush\n\t" \
".set\tmips3\n\t" \
"dmfc0\t%0, " #source "\n\t" \
- ".set\tmips0" \
+ ".set\tpop" \
: "=r" (__res)); \
else \
__asm__ __volatile__( \
+ ".set\tpush\n\t" \
".set\tmips64\n\t" \
"dmfc0\t%0, " #source ", " #sel "\n\t" \
- ".set\tmips0" \
+ ".set\tpop" \
: "=r" (__res)); \
__res; \
})
@@ -968,9 +971,10 @@ do {
\
: : "Jr" ((unsigned int)(value))); \
else \
__asm__ __volatile__( \
+ ".set\tpush\n\t" \
".set\tmips32\n\t" \
"mtc0\t%z0, " #register ", " #sel "\n\t" \
- ".set\tmips0" \
+ ".set\tpop" \
: : "Jr" ((unsigned int)(value))); \
} while (0)
@@ -980,15 +984,17 @@ do {
\
__write_64bit_c0_split(register, sel, value); \
else if (sel == 0) \
__asm__ __volatile__( \
+ ".set\tpush\n\t" \
".set\tmips3\n\t" \
"dmtc0\t%z0, " #register "\n\t" \
- ".set\tmips0" \
+ ".set\tpop" \
: : "Jr" (value)); \
else \
__asm__ __volatile__( \
+ ".set\tpush\n\t" \
".set\tmips64\n\t" \
"dmtc0\t%z0, " #register ", " #sel "\n\t" \
- ".set\tmips0" \
+ ".set\tpop" \
: : "Jr" (value)); \
} while (0)
@@ -1033,21 +1039,21 @@ do {
\
\
if (sel == 0) \
__asm__ __volatile__( \
+ ".set\tpush\n\t" \
".set\tmips64\n\t" \
- "dmfc0\t%M0, " #source "\n\t" \
- "dsll\t%L0, %M0, 32\n\t" \
- "dsra\t%M0, %M0, 32\n\t" \
- "dsra\t%L0, %L0, 32\n\t" \
- ".set\tmips0" \
+ "dmfc0\t%L0, " #source "\n\t" \
+ "dsra\t%M0, %L0, 32\n\t" \
+ "sll\t%L0, %L0, 0\n\t" \
+ ".set\tpop" \
: "=r" (__val)); \
else \
__asm__ __volatile__( \
+ ".set\tpush\n\t" \
".set\tmips64\n\t" \
- "dmfc0\t%M0, " #source ", " #sel "\n\t" \
- "dsll\t%L0, %M0, 32\n\t" \
- "dsra\t%M0, %M0, 32\n\t" \
- "dsra\t%L0, %L0, 32\n\t" \
- ".set\tmips0" \
+ "dmfc0\t%L0, " #source ", " #sel "\n\t" \
+ "dsra\t%M0, %L0, 32\n\t" \
+ "sll\t%L0, %L0, 0\n\t" \
+ ".set\tpop" \
: "=r" (__val)); \
\
__val; \
@@ -1057,23 +1063,25 @@ do {
\
do { \
if (sel == 0) \
__asm__ __volatile__( \
+ ".set\tpush\n\t" \
".set\tmips64\n\t" \
"dsll\t%L0, %L0, 32\n\t" \
"dsrl\t%L0, %L0, 32\n\t" \
"dsll\t%M0, %M0, 32\n\t" \
"or\t%L0, %L0, %M0\n\t" \
"dmtc0\t%L0, " #source "\n\t" \
- ".set\tmips0" \
+ ".set\tpop" \
: : "r" (val)); \
else \
__asm__ __volatile__( \
+ ".set\tpush\n\t" \
".set\tmips64\n\t" \
"dsll\t%L0, %L0, 32\n\t" \
"dsrl\t%L0, %L0, 32\n\t" \
"dsll\t%M0, %M0, 32\n\t" \
"or\t%L0, %L0, %M0\n\t" \
"dmtc0\t%L0, " #source ", " #sel "\n\t" \
- ".set\tmips0" \
+ ".set\tpop" \
: : "r" (val)); \
} while (0)
--
2.26.2
