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yaml
---
r: 11103
b: refs/heads/master
c: aac8aa7
h: refs/heads/master
i:
  11101: d8e6697
  11099: ebf9c6e
  11095: deb9151
  11087: 45691b6
  11071: 1822b53
v: v3
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Maciej W. Rozycki authored and Ralf Baechle committed Oct 29, 2005
1 parent 4b75e4e commit 87b7f75
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Showing 5 changed files with 119 additions and 33 deletions.
2 changes: 1 addition & 1 deletion [refs]
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Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: fded2e508a1d3c26ab477ab3b98f13274d4359ba
refs/heads/master: aac8aa7717a23a9bf8740dbfb59755b1d62f04bf
12 changes: 8 additions & 4 deletions trunk/arch/mips/kernel/semaphore.c
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Original file line number Diff line number Diff line change
Expand Up @@ -42,24 +42,28 @@ static inline int __sem_update_count(struct semaphore *sem, int incr)

if (cpu_has_llsc && R10000_LLSC_WAR) {
__asm__ __volatile__(
"1: ll %0, %2 \n"
" .set mips2 \n"
"1: ll %0, %2 # __sem_update_count \n"
" sra %1, %0, 31 \n"
" not %1 \n"
" and %1, %0, %1 \n"
" add %1, %1, %3 \n"
" addu %1, %1, %3 \n"
" sc %1, %2 \n"
" beqzl %1, 1b \n"
" .set mips0 \n"
: "=&r" (old_count), "=&r" (tmp), "=m" (sem->count)
: "r" (incr), "m" (sem->count));
} else if (cpu_has_llsc) {
__asm__ __volatile__(
"1: ll %0, %2 \n"
" .set mips2 \n"
"1: ll %0, %2 # __sem_update_count \n"
" sra %1, %0, 31 \n"
" not %1 \n"
" and %1, %0, %1 \n"
" add %1, %1, %3 \n"
" addu %1, %1, %3 \n"
" sc %1, %2 \n"
" beqz %1, 1b \n"
" .set mips0 \n"
: "=&r" (old_count), "=&r" (tmp), "=m" (sem->count)
: "r" (incr), "m" (sem->count));
} else {
Expand Down
40 changes: 40 additions & 0 deletions trunk/include/asm-mips/atomic.h
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Original file line number Diff line number Diff line change
Expand Up @@ -62,20 +62,24 @@ static __inline__ void atomic_add(int i, atomic_t * v)
unsigned long temp;

__asm__ __volatile__(
" .set mips2 \n"
"1: ll %0, %1 # atomic_add \n"
" addu %0, %2 \n"
" sc %0, %1 \n"
" beqzl %0, 1b \n"
" .set mips0 \n"
: "=&r" (temp), "=m" (v->counter)
: "Ir" (i), "m" (v->counter));
} else if (cpu_has_llsc) {
unsigned long temp;

__asm__ __volatile__(
" .set mips2 \n"
"1: ll %0, %1 # atomic_add \n"
" addu %0, %2 \n"
" sc %0, %1 \n"
" beqz %0, 1b \n"
" .set mips0 \n"
: "=&r" (temp), "=m" (v->counter)
: "Ir" (i), "m" (v->counter));
} else {
Expand All @@ -100,20 +104,24 @@ static __inline__ void atomic_sub(int i, atomic_t * v)
unsigned long temp;

__asm__ __volatile__(
" .set mips2 \n"
"1: ll %0, %1 # atomic_sub \n"
" subu %0, %2 \n"
" sc %0, %1 \n"
" beqzl %0, 1b \n"
" .set mips0 \n"
: "=&r" (temp), "=m" (v->counter)
: "Ir" (i), "m" (v->counter));
} else if (cpu_has_llsc) {
unsigned long temp;

__asm__ __volatile__(
" .set mips2 \n"
"1: ll %0, %1 # atomic_sub \n"
" subu %0, %2 \n"
" sc %0, %1 \n"
" beqz %0, 1b \n"
" .set mips0 \n"
: "=&r" (temp), "=m" (v->counter)
: "Ir" (i), "m" (v->counter));
} else {
Expand All @@ -136,25 +144,29 @@ static __inline__ int atomic_add_return(int i, atomic_t * v)
unsigned long temp;

__asm__ __volatile__(
" .set mips2 \n"
"1: ll %1, %2 # atomic_add_return \n"
" addu %0, %1, %3 \n"
" sc %0, %2 \n"
" beqzl %0, 1b \n"
" addu %0, %1, %3 \n"
" sync \n"
" .set mips0 \n"
: "=&r" (result), "=&r" (temp), "=m" (v->counter)
: "Ir" (i), "m" (v->counter)
: "memory");
} else if (cpu_has_llsc) {
unsigned long temp;

__asm__ __volatile__(
" .set mips2 \n"
"1: ll %1, %2 # atomic_add_return \n"
" addu %0, %1, %3 \n"
" sc %0, %2 \n"
" beqz %0, 1b \n"
" addu %0, %1, %3 \n"
" sync \n"
" .set mips0 \n"
: "=&r" (result), "=&r" (temp), "=m" (v->counter)
: "Ir" (i), "m" (v->counter)
: "memory");
Expand All @@ -179,25 +191,29 @@ static __inline__ int atomic_sub_return(int i, atomic_t * v)
unsigned long temp;

__asm__ __volatile__(
" .set mips2 \n"
"1: ll %1, %2 # atomic_sub_return \n"
" subu %0, %1, %3 \n"
" sc %0, %2 \n"
" beqzl %0, 1b \n"
" subu %0, %1, %3 \n"
" sync \n"
" .set mips0 \n"
: "=&r" (result), "=&r" (temp), "=m" (v->counter)
: "Ir" (i), "m" (v->counter)
: "memory");
} else if (cpu_has_llsc) {
unsigned long temp;

__asm__ __volatile__(
" .set mips2 \n"
"1: ll %1, %2 # atomic_sub_return \n"
" subu %0, %1, %3 \n"
" sc %0, %2 \n"
" beqz %0, 1b \n"
" subu %0, %1, %3 \n"
" sync \n"
" .set mips0 \n"
: "=&r" (result), "=&r" (temp), "=m" (v->counter)
: "Ir" (i), "m" (v->counter)
: "memory");
Expand Down Expand Up @@ -229,27 +245,31 @@ static __inline__ int atomic_sub_if_positive(int i, atomic_t * v)
unsigned long temp;

__asm__ __volatile__(
" .set mips2 \n"
"1: ll %1, %2 # atomic_sub_if_positive\n"
" subu %0, %1, %3 \n"
" bltz %0, 1f \n"
" sc %0, %2 \n"
" beqzl %0, 1b \n"
" sync \n"
"1: \n"
" .set mips0 \n"
: "=&r" (result), "=&r" (temp), "=m" (v->counter)
: "Ir" (i), "m" (v->counter)
: "memory");
} else if (cpu_has_llsc) {
unsigned long temp;

__asm__ __volatile__(
" .set mips2 \n"
"1: ll %1, %2 # atomic_sub_if_positive\n"
" subu %0, %1, %3 \n"
" bltz %0, 1f \n"
" sc %0, %2 \n"
" beqz %0, 1b \n"
" sync \n"
"1: \n"
" .set mips0 \n"
: "=&r" (result), "=&r" (temp), "=m" (v->counter)
: "Ir" (i), "m" (v->counter)
: "memory");
Expand Down Expand Up @@ -367,20 +387,24 @@ static __inline__ void atomic64_add(long i, atomic64_t * v)
unsigned long temp;

__asm__ __volatile__(
" .set mips3 \n"
"1: lld %0, %1 # atomic64_add \n"
" addu %0, %2 \n"
" scd %0, %1 \n"
" beqzl %0, 1b \n"
" .set mips0 \n"
: "=&r" (temp), "=m" (v->counter)
: "Ir" (i), "m" (v->counter));
} else if (cpu_has_llsc) {
unsigned long temp;

__asm__ __volatile__(
" .set mips3 \n"
"1: lld %0, %1 # atomic64_add \n"
" addu %0, %2 \n"
" scd %0, %1 \n"
" beqz %0, 1b \n"
" .set mips0 \n"
: "=&r" (temp), "=m" (v->counter)
: "Ir" (i), "m" (v->counter));
} else {
Expand All @@ -405,20 +429,24 @@ static __inline__ void atomic64_sub(long i, atomic64_t * v)
unsigned long temp;

__asm__ __volatile__(
" .set mips3 \n"
"1: lld %0, %1 # atomic64_sub \n"
" subu %0, %2 \n"
" scd %0, %1 \n"
" beqzl %0, 1b \n"
" .set mips0 \n"
: "=&r" (temp), "=m" (v->counter)
: "Ir" (i), "m" (v->counter));
} else if (cpu_has_llsc) {
unsigned long temp;

__asm__ __volatile__(
" .set mips3 \n"
"1: lld %0, %1 # atomic64_sub \n"
" subu %0, %2 \n"
" scd %0, %1 \n"
" beqz %0, 1b \n"
" .set mips0 \n"
: "=&r" (temp), "=m" (v->counter)
: "Ir" (i), "m" (v->counter));
} else {
Expand All @@ -441,25 +469,29 @@ static __inline__ long atomic64_add_return(long i, atomic64_t * v)
unsigned long temp;

__asm__ __volatile__(
" .set mips3 \n"
"1: lld %1, %2 # atomic64_add_return \n"
" addu %0, %1, %3 \n"
" scd %0, %2 \n"
" beqzl %0, 1b \n"
" addu %0, %1, %3 \n"
" sync \n"
" .set mips0 \n"
: "=&r" (result), "=&r" (temp), "=m" (v->counter)
: "Ir" (i), "m" (v->counter)
: "memory");
} else if (cpu_has_llsc) {
unsigned long temp;

__asm__ __volatile__(
" .set mips3 \n"
"1: lld %1, %2 # atomic64_add_return \n"
" addu %0, %1, %3 \n"
" scd %0, %2 \n"
" beqz %0, 1b \n"
" addu %0, %1, %3 \n"
" sync \n"
" .set mips0 \n"
: "=&r" (result), "=&r" (temp), "=m" (v->counter)
: "Ir" (i), "m" (v->counter)
: "memory");
Expand All @@ -484,25 +516,29 @@ static __inline__ long atomic64_sub_return(long i, atomic64_t * v)
unsigned long temp;

__asm__ __volatile__(
" .set mips3 \n"
"1: lld %1, %2 # atomic64_sub_return \n"
" subu %0, %1, %3 \n"
" scd %0, %2 \n"
" beqzl %0, 1b \n"
" subu %0, %1, %3 \n"
" sync \n"
" .set mips0 \n"
: "=&r" (result), "=&r" (temp), "=m" (v->counter)
: "Ir" (i), "m" (v->counter)
: "memory");
} else if (cpu_has_llsc) {
unsigned long temp;

__asm__ __volatile__(
" .set mips3 \n"
"1: lld %1, %2 # atomic64_sub_return \n"
" subu %0, %1, %3 \n"
" scd %0, %2 \n"
" beqz %0, 1b \n"
" subu %0, %1, %3 \n"
" sync \n"
" .set mips0 \n"
: "=&r" (result), "=&r" (temp), "=m" (v->counter)
: "Ir" (i), "m" (v->counter)
: "memory");
Expand Down Expand Up @@ -534,27 +570,31 @@ static __inline__ long atomic64_sub_if_positive(long i, atomic64_t * v)
unsigned long temp;

__asm__ __volatile__(
" .set mips3 \n"
"1: lld %1, %2 # atomic64_sub_if_positive\n"
" dsubu %0, %1, %3 \n"
" bltz %0, 1f \n"
" scd %0, %2 \n"
" beqzl %0, 1b \n"
" sync \n"
"1: \n"
" .set mips0 \n"
: "=&r" (result), "=&r" (temp), "=m" (v->counter)
: "Ir" (i), "m" (v->counter)
: "memory");
} else if (cpu_has_llsc) {
unsigned long temp;

__asm__ __volatile__(
" .set mips3 \n"
"1: lld %1, %2 # atomic64_sub_if_positive\n"
" dsubu %0, %1, %3 \n"
" bltz %0, 1f \n"
" scd %0, %2 \n"
" beqz %0, 1b \n"
" sync \n"
"1: \n"
" .set mips0 \n"
: "=&r" (result), "=&r" (temp), "=m" (v->counter)
: "Ir" (i), "m" (v->counter)
: "memory");
Expand Down
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