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-rw-r--r--arch/sparc64/lib/U1memcpy.S103
-rw-r--r--arch/sparc64/lib/VISsave.S15
-rw-r--r--arch/sparc64/lib/atomic.S42
-rw-r--r--arch/sparc64/lib/bitops.S31
-rw-r--r--arch/sparc64/lib/debuglocks.c6
-rw-r--r--arch/sparc64/lib/dec_and_lock.S6
-rw-r--r--arch/sparc64/lib/rwsem.S15
7 files changed, 130 insertions, 88 deletions
diff --git a/arch/sparc64/lib/U1memcpy.S b/arch/sparc64/lib/U1memcpy.S
index da9b520c7189..bafd2fc07acb 100644
--- a/arch/sparc64/lib/U1memcpy.S
+++ b/arch/sparc64/lib/U1memcpy.S
@@ -87,14 +87,17 @@
#define LOOP_CHUNK3(src, dest, len, branch_dest) \
MAIN_LOOP_CHUNK(src, dest, f32, f48, len, branch_dest)
+#define DO_SYNC membar #Sync;
#define STORE_SYNC(dest, fsrc) \
EX_ST(STORE_BLK(%fsrc, %dest)); \
- add %dest, 0x40, %dest;
+ add %dest, 0x40, %dest; \
+ DO_SYNC
#define STORE_JUMP(dest, fsrc, target) \
EX_ST(STORE_BLK(%fsrc, %dest)); \
add %dest, 0x40, %dest; \
- ba,pt %xcc, target;
+ ba,pt %xcc, target; \
+ nop;
#define FINISH_VISCHUNK(dest, f0, f1, left) \
subcc %left, 8, %left;\
@@ -239,17 +242,17 @@ FUNC_NAME: /* %o0=dst, %o1=src, %o2=len */
ba,pt %xcc, 1b+4
faligndata %f0, %f2, %f48
1: FREG_FROB(f16,f18,f20,f22,f24,f26,f28,f30,f32)
- STORE_SYNC(o0, f48) membar #Sync
+ STORE_SYNC(o0, f48)
FREG_FROB(f32,f34,f36,f38,f40,f42,f44,f46,f0)
- STORE_JUMP(o0, f48, 40f) membar #Sync
+ STORE_JUMP(o0, f48, 40f)
2: FREG_FROB(f32,f34,f36,f38,f40,f42,f44,f46,f0)
- STORE_SYNC(o0, f48) membar #Sync
+ STORE_SYNC(o0, f48)
FREG_FROB(f0, f2, f4, f6, f8, f10,f12,f14,f16)
- STORE_JUMP(o0, f48, 48f) membar #Sync
+ STORE_JUMP(o0, f48, 48f)
3: FREG_FROB(f0, f2, f4, f6, f8, f10,f12,f14,f16)
- STORE_SYNC(o0, f48) membar #Sync
+ STORE_SYNC(o0, f48)
FREG_FROB(f16,f18,f20,f22,f24,f26,f28,f30,f32)
- STORE_JUMP(o0, f48, 56f) membar #Sync
+ STORE_JUMP(o0, f48, 56f)
1: FREG_FROB(f2, f4, f6, f8, f10,f12,f14,f16,f18)
LOOP_CHUNK1(o1, o0, GLOBAL_SPARE, 1f)
@@ -260,17 +263,17 @@ FUNC_NAME: /* %o0=dst, %o1=src, %o2=len */
ba,pt %xcc, 1b+4
faligndata %f2, %f4, %f48
1: FREG_FROB(f18,f20,f22,f24,f26,f28,f30,f32,f34)
- STORE_SYNC(o0, f48) membar #Sync
+ STORE_SYNC(o0, f48)
FREG_FROB(f34,f36,f38,f40,f42,f44,f46,f0, f2)
- STORE_JUMP(o0, f48, 41f) membar #Sync
+ STORE_JUMP(o0, f48, 41f)
2: FREG_FROB(f34,f36,f38,f40,f42,f44,f46,f0, f2)
- STORE_SYNC(o0, f48) membar #Sync
+ STORE_SYNC(o0, f48)
FREG_FROB(f2, f4, f6, f8, f10,f12,f14,f16,f18)
- STORE_JUMP(o0, f48, 49f) membar #Sync
+ STORE_JUMP(o0, f48, 49f)
3: FREG_FROB(f2, f4, f6, f8, f10,f12,f14,f16,f18)
- STORE_SYNC(o0, f48) membar #Sync
+ STORE_SYNC(o0, f48)
FREG_FROB(f18,f20,f22,f24,f26,f28,f30,f32,f34)
- STORE_JUMP(o0, f48, 57f) membar #Sync
+ STORE_JUMP(o0, f48, 57f)
1: FREG_FROB(f4, f6, f8, f10,f12,f14,f16,f18,f20)
LOOP_CHUNK1(o1, o0, GLOBAL_SPARE, 1f)
@@ -281,17 +284,17 @@ FUNC_NAME: /* %o0=dst, %o1=src, %o2=len */
ba,pt %xcc, 1b+4
faligndata %f4, %f6, %f48
1: FREG_FROB(f20,f22,f24,f26,f28,f30,f32,f34,f36)
- STORE_SYNC(o0, f48) membar #Sync
+ STORE_SYNC(o0, f48)
FREG_FROB(f36,f38,f40,f42,f44,f46,f0, f2, f4)
- STORE_JUMP(o0, f48, 42f) membar #Sync
+ STORE_JUMP(o0, f48, 42f)
2: FREG_FROB(f36,f38,f40,f42,f44,f46,f0, f2, f4)
- STORE_SYNC(o0, f48) membar #Sync
+ STORE_SYNC(o0, f48)
FREG_FROB(f4, f6, f8, f10,f12,f14,f16,f18,f20)
- STORE_JUMP(o0, f48, 50f) membar #Sync
+ STORE_JUMP(o0, f48, 50f)
3: FREG_FROB(f4, f6, f8, f10,f12,f14,f16,f18,f20)
- STORE_SYNC(o0, f48) membar #Sync
+ STORE_SYNC(o0, f48)
FREG_FROB(f20,f22,f24,f26,f28,f30,f32,f34,f36)
- STORE_JUMP(o0, f48, 58f) membar #Sync
+ STORE_JUMP(o0, f48, 58f)
1: FREG_FROB(f6, f8, f10,f12,f14,f16,f18,f20,f22)
LOOP_CHUNK1(o1, o0, GLOBAL_SPARE, 1f)
@@ -302,17 +305,17 @@ FUNC_NAME: /* %o0=dst, %o1=src, %o2=len */
ba,pt %xcc, 1b+4
faligndata %f6, %f8, %f48
1: FREG_FROB(f22,f24,f26,f28,f30,f32,f34,f36,f38)
- STORE_SYNC(o0, f48) membar #Sync
+ STORE_SYNC(o0, f48)
FREG_FROB(f38,f40,f42,f44,f46,f0, f2, f4, f6)
- STORE_JUMP(o0, f48, 43f) membar #Sync
+ STORE_JUMP(o0, f48, 43f)
2: FREG_FROB(f38,f40,f42,f44,f46,f0, f2, f4, f6)
- STORE_SYNC(o0, f48) membar #Sync
+ STORE_SYNC(o0, f48)
FREG_FROB(f6, f8, f10,f12,f14,f16,f18,f20,f22)
- STORE_JUMP(o0, f48, 51f) membar #Sync
+ STORE_JUMP(o0, f48, 51f)
3: FREG_FROB(f6, f8, f10,f12,f14,f16,f18,f20,f22)
- STORE_SYNC(o0, f48) membar #Sync
+ STORE_SYNC(o0, f48)
FREG_FROB(f22,f24,f26,f28,f30,f32,f34,f36,f38)
- STORE_JUMP(o0, f48, 59f) membar #Sync
+ STORE_JUMP(o0, f48, 59f)
1: FREG_FROB(f8, f10,f12,f14,f16,f18,f20,f22,f24)
LOOP_CHUNK1(o1, o0, GLOBAL_SPARE, 1f)
@@ -323,17 +326,17 @@ FUNC_NAME: /* %o0=dst, %o1=src, %o2=len */
ba,pt %xcc, 1b+4
faligndata %f8, %f10, %f48
1: FREG_FROB(f24,f26,f28,f30,f32,f34,f36,f38,f40)
- STORE_SYNC(o0, f48) membar #Sync
+ STORE_SYNC(o0, f48)
FREG_FROB(f40,f42,f44,f46,f0, f2, f4, f6, f8)
- STORE_JUMP(o0, f48, 44f) membar #Sync
+ STORE_JUMP(o0, f48, 44f)
2: FREG_FROB(f40,f42,f44,f46,f0, f2, f4, f6, f8)
- STORE_SYNC(o0, f48) membar #Sync
+ STORE_SYNC(o0, f48)
FREG_FROB(f8, f10,f12,f14,f16,f18,f20,f22,f24)
- STORE_JUMP(o0, f48, 52f) membar #Sync
+ STORE_JUMP(o0, f48, 52f)
3: FREG_FROB(f8, f10,f12,f14,f16,f18,f20,f22,f24)
- STORE_SYNC(o0, f48) membar #Sync
+ STORE_SYNC(o0, f48)
FREG_FROB(f24,f26,f28,f30,f32,f34,f36,f38,f40)
- STORE_JUMP(o0, f48, 60f) membar #Sync
+ STORE_JUMP(o0, f48, 60f)
1: FREG_FROB(f10,f12,f14,f16,f18,f20,f22,f24,f26)
LOOP_CHUNK1(o1, o0, GLOBAL_SPARE, 1f)
@@ -344,17 +347,17 @@ FUNC_NAME: /* %o0=dst, %o1=src, %o2=len */
ba,pt %xcc, 1b+4
faligndata %f10, %f12, %f48
1: FREG_FROB(f26,f28,f30,f32,f34,f36,f38,f40,f42)
- STORE_SYNC(o0, f48) membar #Sync
+ STORE_SYNC(o0, f48)
FREG_FROB(f42,f44,f46,f0, f2, f4, f6, f8, f10)
- STORE_JUMP(o0, f48, 45f) membar #Sync
+ STORE_JUMP(o0, f48, 45f)
2: FREG_FROB(f42,f44,f46,f0, f2, f4, f6, f8, f10)
- STORE_SYNC(o0, f48) membar #Sync
+ STORE_SYNC(o0, f48)
FREG_FROB(f10,f12,f14,f16,f18,f20,f22,f24,f26)
- STORE_JUMP(o0, f48, 53f) membar #Sync
+ STORE_JUMP(o0, f48, 53f)
3: FREG_FROB(f10,f12,f14,f16,f18,f20,f22,f24,f26)
- STORE_SYNC(o0, f48) membar #Sync
+ STORE_SYNC(o0, f48)
FREG_FROB(f26,f28,f30,f32,f34,f36,f38,f40,f42)
- STORE_JUMP(o0, f48, 61f) membar #Sync
+ STORE_JUMP(o0, f48, 61f)
1: FREG_FROB(f12,f14,f16,f18,f20,f22,f24,f26,f28)
LOOP_CHUNK1(o1, o0, GLOBAL_SPARE, 1f)
@@ -365,17 +368,17 @@ FUNC_NAME: /* %o0=dst, %o1=src, %o2=len */
ba,pt %xcc, 1b+4
faligndata %f12, %f14, %f48
1: FREG_FROB(f28,f30,f32,f34,f36,f38,f40,f42,f44)
- STORE_SYNC(o0, f48) membar #Sync
+ STORE_SYNC(o0, f48)
FREG_FROB(f44,f46,f0, f2, f4, f6, f8, f10,f12)
- STORE_JUMP(o0, f48, 46f) membar #Sync
+ STORE_JUMP(o0, f48, 46f)
2: FREG_FROB(f44,f46,f0, f2, f4, f6, f8, f10,f12)
- STORE_SYNC(o0, f48) membar #Sync
+ STORE_SYNC(o0, f48)
FREG_FROB(f12,f14,f16,f18,f20,f22,f24,f26,f28)
- STORE_JUMP(o0, f48, 54f) membar #Sync
+ STORE_JUMP(o0, f48, 54f)
3: FREG_FROB(f12,f14,f16,f18,f20,f22,f24,f26,f28)
- STORE_SYNC(o0, f48) membar #Sync
+ STORE_SYNC(o0, f48)
FREG_FROB(f28,f30,f32,f34,f36,f38,f40,f42,f44)
- STORE_JUMP(o0, f48, 62f) membar #Sync
+ STORE_JUMP(o0, f48, 62f)
1: FREG_FROB(f14,f16,f18,f20,f22,f24,f26,f28,f30)
LOOP_CHUNK1(o1, o0, GLOBAL_SPARE, 1f)
@@ -386,17 +389,17 @@ FUNC_NAME: /* %o0=dst, %o1=src, %o2=len */
ba,pt %xcc, 1b+4
faligndata %f14, %f16, %f48
1: FREG_FROB(f30,f32,f34,f36,f38,f40,f42,f44,f46)
- STORE_SYNC(o0, f48) membar #Sync
+ STORE_SYNC(o0, f48)
FREG_FROB(f46,f0, f2, f4, f6, f8, f10,f12,f14)
- STORE_JUMP(o0, f48, 47f) membar #Sync
+ STORE_JUMP(o0, f48, 47f)
2: FREG_FROB(f46,f0, f2, f4, f6, f8, f10,f12,f14)
- STORE_SYNC(o0, f48) membar #Sync
+ STORE_SYNC(o0, f48)
FREG_FROB(f14,f16,f18,f20,f22,f24,f26,f28,f30)
- STORE_JUMP(o0, f48, 55f) membar #Sync
+ STORE_JUMP(o0, f48, 55f)
3: FREG_FROB(f14,f16,f18,f20,f22,f24,f26,f28,f30)
- STORE_SYNC(o0, f48) membar #Sync
+ STORE_SYNC(o0, f48)
FREG_FROB(f30,f32,f34,f36,f38,f40,f42,f44,f46)
- STORE_JUMP(o0, f48, 63f) membar #Sync
+ STORE_JUMP(o0, f48, 63f)
40: FINISH_VISCHUNK(o0, f0, f2, g3)
41: FINISH_VISCHUNK(o0, f2, f4, g3)
diff --git a/arch/sparc64/lib/VISsave.S b/arch/sparc64/lib/VISsave.S
index 65e328d600a8..4e18989bd602 100644
--- a/arch/sparc64/lib/VISsave.S
+++ b/arch/sparc64/lib/VISsave.S
@@ -72,7 +72,11 @@ vis1: ldub [%g6 + TI_FPSAVED], %g3
stda %f48, [%g3 + %g1] ASI_BLK_P
5: membar #Sync
- jmpl %g7 + %g0, %g0
+ ba,pt %xcc, 80f
+ nop
+
+ .align 32
+80: jmpl %g7 + %g0, %g0
nop
6: ldub [%g3 + TI_FPSAVED], %o5
@@ -87,8 +91,11 @@ vis1: ldub [%g6 + TI_FPSAVED], %g3
stda %f32, [%g2 + %g1] ASI_BLK_P
stda %f48, [%g3 + %g1] ASI_BLK_P
membar #Sync
- jmpl %g7 + %g0, %g0
+ ba,pt %xcc, 80f
+ nop
+ .align 32
+80: jmpl %g7 + %g0, %g0
nop
.align 32
@@ -126,6 +133,10 @@ VISenterhalf:
stda %f0, [%g2 + %g1] ASI_BLK_P
stda %f16, [%g3 + %g1] ASI_BLK_P
membar #Sync
+ ba,pt %xcc, 4f
+ nop
+
+ .align 32
4: and %o5, FPRS_DU, %o5
jmpl %g7 + %g0, %g0
wr %o5, FPRS_FEF, %fprs
diff --git a/arch/sparc64/lib/atomic.S b/arch/sparc64/lib/atomic.S
index e528b8d1a3e6..faf87c31598b 100644
--- a/arch/sparc64/lib/atomic.S
+++ b/arch/sparc64/lib/atomic.S
@@ -7,18 +7,6 @@
#include <linux/config.h>
#include <asm/asi.h>
- /* On SMP we need to use memory barriers to ensure
- * correct memory operation ordering, nop these out
- * for uniprocessor.
- */
-#ifdef CONFIG_SMP
-#define ATOMIC_PRE_BARRIER membar #StoreLoad | #LoadLoad
-#define ATOMIC_POST_BARRIER membar #StoreLoad | #StoreStore
-#else
-#define ATOMIC_PRE_BARRIER nop
-#define ATOMIC_POST_BARRIER nop
-#endif
-
.text
/* Two versions of the atomic routines, one that
@@ -52,6 +40,24 @@ atomic_sub: /* %o0 = decrement, %o1 = atomic_ptr */
nop
.size atomic_sub, .-atomic_sub
+ /* On SMP we need to use memory barriers to ensure
+ * correct memory operation ordering, nop these out
+ * for uniprocessor.
+ */
+#ifdef CONFIG_SMP
+
+#define ATOMIC_PRE_BARRIER membar #StoreLoad | #LoadLoad;
+#define ATOMIC_POST_BARRIER \
+ ba,pt %xcc, 80b; \
+ membar #StoreLoad | #StoreStore
+
+80: retl
+ nop
+#else
+#define ATOMIC_PRE_BARRIER
+#define ATOMIC_POST_BARRIER
+#endif
+
.globl atomic_add_ret
.type atomic_add_ret,#function
atomic_add_ret: /* %o0 = increment, %o1 = atomic_ptr */
@@ -62,9 +68,10 @@ atomic_add_ret: /* %o0 = increment, %o1 = atomic_ptr */
cmp %g1, %g7
bne,pn %icc, 1b
add %g7, %o0, %g7
+ sra %g7, 0, %o0
ATOMIC_POST_BARRIER
retl
- sra %g7, 0, %o0
+ nop
.size atomic_add_ret, .-atomic_add_ret
.globl atomic_sub_ret
@@ -77,9 +84,10 @@ atomic_sub_ret: /* %o0 = decrement, %o1 = atomic_ptr */
cmp %g1, %g7
bne,pn %icc, 1b
sub %g7, %o0, %g7
+ sra %g7, 0, %o0
ATOMIC_POST_BARRIER
retl
- sra %g7, 0, %o0
+ nop
.size atomic_sub_ret, .-atomic_sub_ret
.globl atomic64_add
@@ -118,9 +126,10 @@ atomic64_add_ret: /* %o0 = increment, %o1 = atomic_ptr */
cmp %g1, %g7
bne,pn %xcc, 1b
add %g7, %o0, %g7
+ mov %g7, %o0
ATOMIC_POST_BARRIER
retl
- mov %g7, %o0
+ nop
.size atomic64_add_ret, .-atomic64_add_ret
.globl atomic64_sub_ret
@@ -133,7 +142,8 @@ atomic64_sub_ret: /* %o0 = decrement, %o1 = atomic_ptr */
cmp %g1, %g7
bne,pn %xcc, 1b
sub %g7, %o0, %g7
+ mov %g7, %o0
ATOMIC_POST_BARRIER
retl
- mov %g7, %o0
+ nop
.size atomic64_sub_ret, .-atomic64_sub_ret
diff --git a/arch/sparc64/lib/bitops.S b/arch/sparc64/lib/bitops.S
index 886dcd2b376a..31afbfe6c1e8 100644
--- a/arch/sparc64/lib/bitops.S
+++ b/arch/sparc64/lib/bitops.S
@@ -7,20 +7,26 @@
#include <linux/config.h>
#include <asm/asi.h>
+ .text
+
/* On SMP we need to use memory barriers to ensure
* correct memory operation ordering, nop these out
* for uniprocessor.
*/
+
#ifdef CONFIG_SMP
#define BITOP_PRE_BARRIER membar #StoreLoad | #LoadLoad
-#define BITOP_POST_BARRIER membar #StoreLoad | #StoreStore
+#define BITOP_POST_BARRIER \
+ ba,pt %xcc, 80b; \
+ membar #StoreLoad | #StoreStore
+
+80: retl
+ nop
#else
-#define BITOP_PRE_BARRIER nop
-#define BITOP_POST_BARRIER nop
+#define BITOP_PRE_BARRIER
+#define BITOP_POST_BARRIER
#endif
- .text
-
.globl test_and_set_bit
.type test_and_set_bit,#function
test_and_set_bit: /* %o0=nr, %o1=addr */
@@ -37,10 +43,11 @@ test_and_set_bit: /* %o0=nr, %o1=addr */
cmp %g7, %g1
bne,pn %xcc, 1b
and %g7, %o2, %g2
- BITOP_POST_BARRIER
clr %o0
+ movrne %g2, 1, %o0
+ BITOP_POST_BARRIER
retl
- movrne %g2, 1, %o0
+ nop
.size test_and_set_bit, .-test_and_set_bit
.globl test_and_clear_bit
@@ -59,10 +66,11 @@ test_and_clear_bit: /* %o0=nr, %o1=addr */
cmp %g7, %g1
bne,pn %xcc, 1b
and %g7, %o2, %g2
- BITOP_POST_BARRIER
clr %o0
+ movrne %g2, 1, %o0
+ BITOP_POST_BARRIER
retl
- movrne %g2, 1, %o0
+ nop
.size test_and_clear_bit, .-test_and_clear_bit
.globl test_and_change_bit
@@ -81,10 +89,11 @@ test_and_change_bit: /* %o0=nr, %o1=addr */
cmp %g7, %g1
bne,pn %xcc, 1b
and %g7, %o2, %g2
- BITOP_POST_BARRIER
clr %o0
+ movrne %g2, 1, %o0
+ BITOP_POST_BARRIER
retl
- movrne %g2, 1, %o0
+ nop
.size test_and_change_bit, .-test_and_change_bit
.globl set_bit
diff --git a/arch/sparc64/lib/debuglocks.c b/arch/sparc64/lib/debuglocks.c
index c421e0c65325..f03344cf784e 100644
--- a/arch/sparc64/lib/debuglocks.c
+++ b/arch/sparc64/lib/debuglocks.c
@@ -252,8 +252,9 @@ wlock_again:
" andn %%g1, %%g3, %%g7\n"
" casx [%0], %%g1, %%g7\n"
" cmp %%g1, %%g7\n"
+" membar #StoreLoad | #StoreStore\n"
" bne,pn %%xcc, 1b\n"
-" membar #StoreLoad | #StoreStore"
+" nop"
: /* no outputs */
: "r" (&(rw->lock))
: "g3", "g1", "g7", "cc", "memory");
@@ -351,8 +352,9 @@ int _do_write_trylock (rwlock_t *rw, char *str)
" andn %%g1, %%g3, %%g7\n"
" casx [%0], %%g1, %%g7\n"
" cmp %%g1, %%g7\n"
+" membar #StoreLoad | #StoreStore\n"
" bne,pn %%xcc, 1b\n"
-" membar #StoreLoad | #StoreStore"
+" nop"
: /* no outputs */
: "r" (&(rw->lock))
: "g3", "g1", "g7", "cc", "memory");
diff --git a/arch/sparc64/lib/dec_and_lock.S b/arch/sparc64/lib/dec_and_lock.S
index 7e6fdaebedba..8ee288dd0afc 100644
--- a/arch/sparc64/lib/dec_and_lock.S
+++ b/arch/sparc64/lib/dec_and_lock.S
@@ -48,8 +48,9 @@ start_to_zero:
#endif
to_zero:
ldstub [%o1], %g3
+ membar #StoreLoad | #StoreStore
brnz,pn %g3, spin_on_lock
- membar #StoreLoad | #StoreStore
+ nop
loop2: cas [%o0], %g2, %g7 /* ASSERT(g7 == 0) */
cmp %g2, %g7
@@ -71,8 +72,9 @@ loop2: cas [%o0], %g2, %g7 /* ASSERT(g7 == 0) */
nop
spin_on_lock:
ldub [%o1], %g3
+ membar #LoadLoad
brnz,pt %g3, spin_on_lock
- membar #LoadLoad
+ nop
ba,pt %xcc, to_zero
nop
nop
diff --git a/arch/sparc64/lib/rwsem.S b/arch/sparc64/lib/rwsem.S
index 174ff7b9164c..75f0e6b951d6 100644
--- a/arch/sparc64/lib/rwsem.S
+++ b/arch/sparc64/lib/rwsem.S
@@ -17,8 +17,9 @@ __down_read:
bne,pn %icc, 1b
add %g7, 1, %g7
cmp %g7, 0
+ membar #StoreLoad | #StoreStore
bl,pn %icc, 3f
- membar #StoreLoad | #StoreStore
+ nop
2:
retl
nop
@@ -57,8 +58,9 @@ __down_write:
cmp %g3, %g7
bne,pn %icc, 1b
cmp %g7, 0
+ membar #StoreLoad | #StoreStore
bne,pn %icc, 3f
- membar #StoreLoad | #StoreStore
+ nop
2: retl
nop
3:
@@ -97,8 +99,9 @@ __up_read:
cmp %g1, %g7
bne,pn %icc, 1b
cmp %g7, 0
+ membar #StoreLoad | #StoreStore
bl,pn %icc, 3f
- membar #StoreLoad | #StoreStore
+ nop
2: retl
nop
3: sethi %hi(RWSEM_ACTIVE_MASK), %g1
@@ -126,8 +129,9 @@ __up_write:
bne,pn %icc, 1b
sub %g7, %g1, %g7
cmp %g7, 0
+ membar #StoreLoad | #StoreStore
bl,pn %icc, 3f
- membar #StoreLoad | #StoreStore
+ nop
2:
retl
nop
@@ -151,8 +155,9 @@ __downgrade_write:
bne,pn %icc, 1b
sub %g7, %g1, %g7
cmp %g7, 0
+ membar #StoreLoad | #StoreStore
bl,pn %icc, 3f
- membar #StoreLoad | #StoreStore
+ nop
2:
retl
nop
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-19 05:16:07 +0100