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-rw-r--r--arch/sparc/lib/Makefile2
-rw-r--r--arch/sparc/lib/atomic_64.S36
-rw-r--r--arch/sparc/lib/bitops.S12
-rw-r--r--arch/sparc/lib/rwsem_64.S163
4 files changed, 23 insertions, 190 deletions
diff --git a/arch/sparc/lib/Makefile b/arch/sparc/lib/Makefile
index c4b5e03af115..846d1c4374ea 100644
--- a/arch/sparc/lib/Makefile
+++ b/arch/sparc/lib/Makefile
@@ -15,7 +15,7 @@ lib-$(CONFIG_SPARC32) += divdi3.o udivdi3.o
lib-$(CONFIG_SPARC32) += copy_user.o locks.o
lib-y += atomic_$(BITS).o
lib-$(CONFIG_SPARC32) += lshrdi3.o ashldi3.o
-lib-y += rwsem_$(BITS).o
+lib-$(CONFIG_SPARC32) += rwsem_32.o
lib-$(CONFIG_SPARC32) += muldi3.o bitext.o cmpdi2.o
lib-$(CONFIG_SPARC64) += copy_page.o clear_page.o bzero.o
diff --git a/arch/sparc/lib/atomic_64.S b/arch/sparc/lib/atomic_64.S
index 0268210ca168..59186e0fcf39 100644
--- a/arch/sparc/lib/atomic_64.S
+++ b/arch/sparc/lib/atomic_64.S
@@ -21,7 +21,7 @@ atomic_add: /* %o0 = increment, %o1 = atomic_ptr */
add %g1, %o0, %g7
cas [%o1], %g1, %g7
cmp %g1, %g7
- bne,pn %icc, 2f
+ bne,pn %icc, BACKOFF_LABEL(2f, 1b)
nop
retl
nop
@@ -36,7 +36,7 @@ atomic_sub: /* %o0 = decrement, %o1 = atomic_ptr */
sub %g1, %o0, %g7
cas [%o1], %g1, %g7
cmp %g1, %g7
- bne,pn %icc, 2f
+ bne,pn %icc, BACKOFF_LABEL(2f, 1b)
nop
retl
nop
@@ -51,11 +51,10 @@ atomic_add_ret: /* %o0 = increment, %o1 = atomic_ptr */
add %g1, %o0, %g7
cas [%o1], %g1, %g7
cmp %g1, %g7
- bne,pn %icc, 2f
- add %g7, %o0, %g7
- sra %g7, 0, %o0
+ bne,pn %icc, BACKOFF_LABEL(2f, 1b)
+ add %g1, %o0, %g1
retl
- nop
+ sra %g1, 0, %o0
2: BACKOFF_SPIN(%o2, %o3, 1b)
.size atomic_add_ret, .-atomic_add_ret
@@ -67,11 +66,10 @@ atomic_sub_ret: /* %o0 = decrement, %o1 = atomic_ptr */
sub %g1, %o0, %g7
cas [%o1], %g1, %g7
cmp %g1, %g7
- bne,pn %icc, 2f
- sub %g7, %o0, %g7
- sra %g7, 0, %o0
+ bne,pn %icc, BACKOFF_LABEL(2f, 1b)
+ sub %g1, %o0, %g1
retl
- nop
+ sra %g1, 0, %o0
2: BACKOFF_SPIN(%o2, %o3, 1b)
.size atomic_sub_ret, .-atomic_sub_ret
@@ -83,7 +81,7 @@ atomic64_add: /* %o0 = increment, %o1 = atomic_ptr */
add %g1, %o0, %g7
casx [%o1], %g1, %g7
cmp %g1, %g7
- bne,pn %xcc, 2f
+ bne,pn %xcc, BACKOFF_LABEL(2f, 1b)
nop
retl
nop
@@ -98,7 +96,7 @@ atomic64_sub: /* %o0 = decrement, %o1 = atomic_ptr */
sub %g1, %o0, %g7
casx [%o1], %g1, %g7
cmp %g1, %g7
- bne,pn %xcc, 2f
+ bne,pn %xcc, BACKOFF_LABEL(2f, 1b)
nop
retl
nop
@@ -113,11 +111,10 @@ atomic64_add_ret: /* %o0 = increment, %o1 = atomic_ptr */
add %g1, %o0, %g7
casx [%o1], %g1, %g7
cmp %g1, %g7
- bne,pn %xcc, 2f
- add %g7, %o0, %g7
- mov %g7, %o0
- retl
+ bne,pn %xcc, BACKOFF_LABEL(2f, 1b)
nop
+ retl
+ add %g1, %o0, %o0
2: BACKOFF_SPIN(%o2, %o3, 1b)
.size atomic64_add_ret, .-atomic64_add_ret
@@ -129,10 +126,9 @@ atomic64_sub_ret: /* %o0 = decrement, %o1 = atomic_ptr */
sub %g1, %o0, %g7
casx [%o1], %g1, %g7
cmp %g1, %g7
- bne,pn %xcc, 2f
- sub %g7, %o0, %g7
- mov %g7, %o0
- retl
+ bne,pn %xcc, BACKOFF_LABEL(2f, 1b)
nop
+ retl
+ sub %g1, %o0, %o0
2: BACKOFF_SPIN(%o2, %o3, 1b)
.size atomic64_sub_ret, .-atomic64_sub_ret
diff --git a/arch/sparc/lib/bitops.S b/arch/sparc/lib/bitops.S
index 2b7228cb8c22..3dc61d5537c0 100644
--- a/arch/sparc/lib/bitops.S
+++ b/arch/sparc/lib/bitops.S
@@ -22,7 +22,7 @@ test_and_set_bit: /* %o0=nr, %o1=addr */
or %g7, %o2, %g1
casx [%o1], %g7, %g1
cmp %g7, %g1
- bne,pn %xcc, 2f
+ bne,pn %xcc, BACKOFF_LABEL(2f, 1b)
and %g7, %o2, %g2
clr %o0
movrne %g2, 1, %o0
@@ -45,7 +45,7 @@ test_and_clear_bit: /* %o0=nr, %o1=addr */
andn %g7, %o2, %g1
casx [%o1], %g7, %g1
cmp %g7, %g1
- bne,pn %xcc, 2f
+ bne,pn %xcc, BACKOFF_LABEL(2f, 1b)
and %g7, %o2, %g2
clr %o0
movrne %g2, 1, %o0
@@ -68,7 +68,7 @@ test_and_change_bit: /* %o0=nr, %o1=addr */
xor %g7, %o2, %g1
casx [%o1], %g7, %g1
cmp %g7, %g1
- bne,pn %xcc, 2f
+ bne,pn %xcc, BACKOFF_LABEL(2f, 1b)
and %g7, %o2, %g2
clr %o0
movrne %g2, 1, %o0
@@ -91,7 +91,7 @@ set_bit: /* %o0=nr, %o1=addr */
or %g7, %o2, %g1
casx [%o1], %g7, %g1
cmp %g7, %g1
- bne,pn %xcc, 2f
+ bne,pn %xcc, BACKOFF_LABEL(2f, 1b)
nop
retl
nop
@@ -112,7 +112,7 @@ clear_bit: /* %o0=nr, %o1=addr */
andn %g7, %o2, %g1
casx [%o1], %g7, %g1
cmp %g7, %g1
- bne,pn %xcc, 2f
+ bne,pn %xcc, BACKOFF_LABEL(2f, 1b)
nop
retl
nop
@@ -133,7 +133,7 @@ change_bit: /* %o0=nr, %o1=addr */
xor %g7, %o2, %g1
casx [%o1], %g7, %g1
cmp %g7, %g1
- bne,pn %xcc, 2f
+ bne,pn %xcc, BACKOFF_LABEL(2f, 1b)
nop
retl
nop
diff --git a/arch/sparc/lib/rwsem_64.S b/arch/sparc/lib/rwsem_64.S
deleted file mode 100644
index 91a7d29a79d5..000000000000
--- a/arch/sparc/lib/rwsem_64.S
+++ /dev/null
@@ -1,163 +0,0 @@
-/* rwsem.S: RW semaphore assembler.
- *
- * Written by David S. Miller (davem@redhat.com), 2001.
- * Derived from asm-i386/rwsem.h
- */
-
-#include <asm/rwsem-const.h>
-
- .section .sched.text, "ax"
-
- .globl __down_read
-__down_read:
-1: lduw [%o0], %g1
- add %g1, 1, %g7
- cas [%o0], %g1, %g7
- cmp %g1, %g7
- bne,pn %icc, 1b
- add %g7, 1, %g7
- cmp %g7, 0
- bl,pn %icc, 3f
- nop
-2:
- retl
- nop
-3:
- save %sp, -192, %sp
- call rwsem_down_read_failed
- mov %i0, %o0
- ret
- restore
- .size __down_read, .-__down_read
-
- .globl __down_read_trylock
-__down_read_trylock:
-1: lduw [%o0], %g1
- add %g1, 1, %g7
- cmp %g7, 0
- bl,pn %icc, 2f
- mov 0, %o1
- cas [%o0], %g1, %g7
- cmp %g1, %g7
- bne,pn %icc, 1b
- mov 1, %o1
-2: retl
- mov %o1, %o0
- .size __down_read_trylock, .-__down_read_trylock
-
- .globl __down_write
-__down_write:
- sethi %hi(RWSEM_ACTIVE_WRITE_BIAS), %g1
- or %g1, %lo(RWSEM_ACTIVE_WRITE_BIAS), %g1
-1:
- lduw [%o0], %g3
- add %g3, %g1, %g7
- cas [%o0], %g3, %g7
- cmp %g3, %g7
- bne,pn %icc, 1b
- cmp %g7, 0
- bne,pn %icc, 3f
- nop
-2: retl
- nop
-3:
- save %sp, -192, %sp
- call rwsem_down_write_failed
- mov %i0, %o0
- ret
- restore
- .size __down_write, .-__down_write
-
- .globl __down_write_trylock
-__down_write_trylock:
- sethi %hi(RWSEM_ACTIVE_WRITE_BIAS), %g1
- or %g1, %lo(RWSEM_ACTIVE_WRITE_BIAS), %g1
-1:
- lduw [%o0], %g3
- cmp %g3, 0
- bne,pn %icc, 2f
- mov 0, %o1
- add %g3, %g1, %g7
- cas [%o0], %g3, %g7
- cmp %g3, %g7
- bne,pn %icc, 1b
- mov 1, %o1
-2: retl
- mov %o1, %o0
- .size __down_write_trylock, .-__down_write_trylock
-
- .globl __up_read
-__up_read:
-1:
- lduw [%o0], %g1
- sub %g1, 1, %g7
- cas [%o0], %g1, %g7
- cmp %g1, %g7
- bne,pn %icc, 1b
- cmp %g7, 0
- bl,pn %icc, 3f
- nop
-2: retl
- nop
-3: sethi %hi(RWSEM_ACTIVE_MASK), %g1
- sub %g7, 1, %g7
- or %g1, %lo(RWSEM_ACTIVE_MASK), %g1
- andcc %g7, %g1, %g0
- bne,pn %icc, 2b
- nop
- save %sp, -192, %sp
- call rwsem_wake
- mov %i0, %o0
- ret
- restore
- .size __up_read, .-__up_read
-
- .globl __up_write
-__up_write:
- sethi %hi(RWSEM_ACTIVE_WRITE_BIAS), %g1
- or %g1, %lo(RWSEM_ACTIVE_WRITE_BIAS), %g1
-1:
- lduw [%o0], %g3
- sub %g3, %g1, %g7
- cas [%o0], %g3, %g7
- cmp %g3, %g7
- bne,pn %icc, 1b
- sub %g7, %g1, %g7
- cmp %g7, 0
- bl,pn %icc, 3f
- nop
-2:
- retl
- nop
-3:
- save %sp, -192, %sp
- call rwsem_wake
- mov %i0, %o0
- ret
- restore
- .size __up_write, .-__up_write
-
- .globl __downgrade_write
-__downgrade_write:
- sethi %hi(RWSEM_WAITING_BIAS), %g1
- or %g1, %lo(RWSEM_WAITING_BIAS), %g1
-1:
- lduw [%o0], %g3
- sub %g3, %g1, %g7
- cas [%o0], %g3, %g7
- cmp %g3, %g7
- bne,pn %icc, 1b
- sub %g7, %g1, %g7
- cmp %g7, 0
- bl,pn %icc, 3f
- nop
-2:
- retl
- nop
-3:
- save %sp, -192, %sp
- call rwsem_downgrade_wake
- mov %i0, %o0
- ret
- restore
- .size __downgrade_write, .-__downgrade_write
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-29 03:55:07 +0100