[SPARC64]: Fix missing load-twin usage in Niagara-1 memcpy.
For the case where the source is not aligned modulo 8
we don't use load-twins to suck the data in and this
kills performance since normal loads allocate in the
L1 cache (unlike load-twin) and thus big memcpys swipe
the entire L1 D-cache.
We need to allocate a register window to implement this
properly, but that actually simplifies a lot of things
as a nice side-effect.
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc64/lib/NGcopy_from_user.S b/arch/sparc64/lib/NGcopy_from_user.S
index 2d93456..e7f433f 100644
--- a/arch/sparc64/lib/NGcopy_from_user.S
+++ b/arch/sparc64/lib/NGcopy_from_user.S
@@ -1,6 +1,6 @@
/* NGcopy_from_user.S: Niagara optimized copy from userspace.
*
- * Copyright (C) 2006 David S. Miller (davem@davemloft.net)
+ * Copyright (C) 2006, 2007 David S. Miller (davem@davemloft.net)
*/
#define EX_LD(x) \
@@ -8,8 +8,8 @@
.section .fixup; \
.align 4; \
99: wr %g0, ASI_AIUS, %asi;\
- retl; \
- mov 1, %o0; \
+ ret; \
+ restore %g0, 1, %o0; \
.section __ex_table,"a";\
.align 4; \
.word 98b, 99b; \
@@ -24,7 +24,7 @@
#define LOAD(type,addr,dest) type##a [addr] ASI_AIUS, dest
#define LOAD_TWIN(addr_reg,dest0,dest1) \
ldda [addr_reg] ASI_BLK_INIT_QUAD_LDD_AIUS, dest0
-#define EX_RETVAL(x) 0
+#define EX_RETVAL(x) %g0
#ifdef __KERNEL__
#define PREAMBLE \
diff --git a/arch/sparc64/lib/NGcopy_to_user.S b/arch/sparc64/lib/NGcopy_to_user.S
index 34112d5..6ea01c5 100644
--- a/arch/sparc64/lib/NGcopy_to_user.S
+++ b/arch/sparc64/lib/NGcopy_to_user.S
@@ -1,6 +1,6 @@
/* NGcopy_to_user.S: Niagara optimized copy to userspace.
*
- * Copyright (C) 2006 David S. Miller (davem@davemloft.net)
+ * Copyright (C) 2006, 2007 David S. Miller (davem@davemloft.net)
*/
#define EX_ST(x) \
@@ -8,8 +8,8 @@
.section .fixup; \
.align 4; \
99: wr %g0, ASI_AIUS, %asi;\
- retl; \
- mov 1, %o0; \
+ ret; \
+ restore %g0, 1, %o0; \
.section __ex_table,"a";\
.align 4; \
.word 98b, 99b; \
@@ -23,7 +23,7 @@
#define FUNC_NAME NGcopy_to_user
#define STORE(type,src,addr) type##a src, [addr] ASI_AIUS
#define STORE_ASI ASI_BLK_INIT_QUAD_LDD_AIUS
-#define EX_RETVAL(x) 0
+#define EX_RETVAL(x) %g0
#ifdef __KERNEL__
/* Writing to %asi is _expensive_ so we hardcode it.
diff --git a/arch/sparc64/lib/NGmemcpy.S b/arch/sparc64/lib/NGmemcpy.S
index 66063a9..605cb3f 100644
--- a/arch/sparc64/lib/NGmemcpy.S
+++ b/arch/sparc64/lib/NGmemcpy.S
@@ -1,6 +1,6 @@
/* NGmemcpy.S: Niagara optimized memcpy.
*
- * Copyright (C) 2006 David S. Miller (davem@davemloft.net)
+ * Copyright (C) 2006, 2007 David S. Miller (davem@davemloft.net)
*/
#ifdef __KERNEL__
@@ -16,6 +16,12 @@
wr %g0, ASI_PNF, %asi
#endif
+#ifdef __sparc_v9__
+#define SAVE_AMOUNT 128
+#else
+#define SAVE_AMOUNT 64
+#endif
+
#ifndef STORE_ASI
#define STORE_ASI ASI_BLK_INIT_QUAD_LDD_P
#endif
@@ -50,7 +56,11 @@
#endif
#ifndef STORE_INIT
+#ifndef SIMULATE_NIAGARA_ON_NON_NIAGARA
#define STORE_INIT(src,addr) stxa src, [addr] %asi
+#else
+#define STORE_INIT(src,addr) stx src, [addr + 0x00]
+#endif
#endif
#ifndef FUNC_NAME
@@ -73,18 +83,19 @@
.globl FUNC_NAME
.type FUNC_NAME,#function
-FUNC_NAME: /* %o0=dst, %o1=src, %o2=len */
- srlx %o2, 31, %g2
+FUNC_NAME: /* %i0=dst, %i1=src, %i2=len */
+ PREAMBLE
+ save %sp, -SAVE_AMOUNT, %sp
+ srlx %i2, 31, %g2
cmp %g2, 0
tne %xcc, 5
- PREAMBLE
- mov %o0, GLOBAL_SPARE
- cmp %o2, 0
+ mov %i0, %o0
+ cmp %i2, 0
be,pn %XCC, 85f
- or %o0, %o1, %o3
- cmp %o2, 16
+ or %o0, %i1, %i3
+ cmp %i2, 16
blu,a,pn %XCC, 80f
- or %o3, %o2, %o3
+ or %i3, %i2, %i3
/* 2 blocks (128 bytes) is the minimum we can do the block
* copy with. We need to ensure that we'll iterate at least
@@ -93,31 +104,31 @@
* to (64 - 1) bytes from the length before we perform the
* block copy loop.
*/
- cmp %o2, (2 * 64)
+ cmp %i2, (2 * 64)
blu,pt %XCC, 70f
- andcc %o3, 0x7, %g0
+ andcc %i3, 0x7, %g0
/* %o0: dst
- * %o1: src
- * %o2: len (known to be >= 128)
+ * %i1: src
+ * %i2: len (known to be >= 128)
*
- * The block copy loops will use %o4/%o5,%g2/%g3 as
+ * The block copy loops will use %i4/%i5,%g2/%g3 as
* temporaries while copying the data.
*/
- LOAD(prefetch, %o1, #one_read)
+ LOAD(prefetch, %i1, #one_read)
wr %g0, STORE_ASI, %asi
/* Align destination on 64-byte boundary. */
- andcc %o0, (64 - 1), %o4
+ andcc %o0, (64 - 1), %i4
be,pt %XCC, 2f
- sub %o4, 64, %o4
- sub %g0, %o4, %o4 ! bytes to align dst
- sub %o2, %o4, %o2
-1: subcc %o4, 1, %o4
- EX_LD(LOAD(ldub, %o1, %g1))
+ sub %i4, 64, %i4
+ sub %g0, %i4, %i4 ! bytes to align dst
+ sub %i2, %i4, %i2
+1: subcc %i4, 1, %i4
+ EX_LD(LOAD(ldub, %i1, %g1))
EX_ST(STORE(stb, %g1, %o0))
- add %o1, 1, %o1
+ add %i1, 1, %i1
bne,pt %XCC, 1b
add %o0, 1, %o0
@@ -136,111 +147,155 @@
* aligned store data at a time, this is easy to ensure.
*/
2:
- andcc %o1, (16 - 1), %o4
- andn %o2, (64 - 1), %g1 ! block copy loop iterator
- sub %o2, %g1, %o2 ! final sub-block copy bytes
+ andcc %i1, (16 - 1), %i4
+ andn %i2, (64 - 1), %g1 ! block copy loop iterator
be,pt %XCC, 50f
- cmp %o4, 8
- be,a,pt %XCC, 10f
- sub %o1, 0x8, %o1
+ sub %i2, %g1, %i2 ! final sub-block copy bytes
+
+ cmp %i4, 8
+ be,pt %XCC, 10f
+ sub %i1, %i4, %i1
/* Neither 8-byte nor 16-byte aligned, shift and mask. */
- mov %g1, %o4
- and %o1, 0x7, %g1
- sll %g1, 3, %g1
- mov 64, %o3
- andn %o1, 0x7, %o1
- EX_LD(LOAD(ldx, %o1, %g2))
- sub %o3, %g1, %o3
- sllx %g2, %g1, %g2
+ and %i4, 0x7, GLOBAL_SPARE
+ sll GLOBAL_SPARE, 3, GLOBAL_SPARE
+ mov 64, %i5
+ EX_LD(LOAD_TWIN(%i1, %g2, %g3))
+ sub %i5, GLOBAL_SPARE, %i5
+ mov 16, %o4
+ mov 32, %o5
+ mov 48, %o7
+ mov 64, %i3
-#define SWIVEL_ONE_DWORD(SRC, TMP1, TMP2, PRE_VAL, PRE_SHIFT, POST_SHIFT, DST)\
- EX_LD(LOAD(ldx, SRC, TMP1)); \
- srlx TMP1, PRE_SHIFT, TMP2; \
- or TMP2, PRE_VAL, TMP2; \
- EX_ST(STORE_INIT(TMP2, DST)); \
- sllx TMP1, POST_SHIFT, PRE_VAL;
+ bg,pn %XCC, 9f
+ nop
-1: add %o1, 0x8, %o1
- SWIVEL_ONE_DWORD(%o1, %g3, %o5, %g2, %o3, %g1, %o0 + 0x00)
- add %o1, 0x8, %o1
- SWIVEL_ONE_DWORD(%o1, %g3, %o5, %g2, %o3, %g1, %o0 + 0x08)
- add %o1, 0x8, %o1
- SWIVEL_ONE_DWORD(%o1, %g3, %o5, %g2, %o3, %g1, %o0 + 0x10)
- add %o1, 0x8, %o1
- SWIVEL_ONE_DWORD(%o1, %g3, %o5, %g2, %o3, %g1, %o0 + 0x18)
- add %o1, 32, %o1
- LOAD(prefetch, %o1, #one_read)
- sub %o1, 32 - 8, %o1
- SWIVEL_ONE_DWORD(%o1, %g3, %o5, %g2, %o3, %g1, %o0 + 0x20)
- add %o1, 8, %o1
- SWIVEL_ONE_DWORD(%o1, %g3, %o5, %g2, %o3, %g1, %o0 + 0x28)
- add %o1, 8, %o1
- SWIVEL_ONE_DWORD(%o1, %g3, %o5, %g2, %o3, %g1, %o0 + 0x30)
- add %o1, 8, %o1
- SWIVEL_ONE_DWORD(%o1, %g3, %o5, %g2, %o3, %g1, %o0 + 0x38)
- subcc %o4, 64, %o4
- bne,pt %XCC, 1b
+#define MIX_THREE_WORDS(WORD1, WORD2, WORD3, PRE_SHIFT, POST_SHIFT, TMP) \
+ sllx WORD1, POST_SHIFT, WORD1; \
+ srlx WORD2, PRE_SHIFT, TMP; \
+ sllx WORD2, POST_SHIFT, WORD2; \
+ or WORD1, TMP, WORD1; \
+ srlx WORD3, PRE_SHIFT, TMP; \
+ or WORD2, TMP, WORD2;
+
+8: EX_LD(LOAD_TWIN(%i1 + %o4, %o2, %o3))
+ MIX_THREE_WORDS(%g2, %g3, %o2, %i5, GLOBAL_SPARE, %o1)
+ LOAD(prefetch, %i1 + %i3, #one_read)
+
+ EX_ST(STORE_INIT(%g2, %o0 + 0x00))
+ EX_ST(STORE_INIT(%g3, %o0 + 0x08))
+
+ EX_LD(LOAD_TWIN(%i1 + %o5, %g2, %g3))
+ MIX_THREE_WORDS(%o2, %o3, %g2, %i5, GLOBAL_SPARE, %o1)
+
+ EX_ST(STORE_INIT(%o2, %o0 + 0x10))
+ EX_ST(STORE_INIT(%o3, %o0 + 0x18))
+
+ EX_LD(LOAD_TWIN(%i1 + %o7, %o2, %o3))
+ MIX_THREE_WORDS(%g2, %g3, %o2, %i5, GLOBAL_SPARE, %o1)
+
+ EX_ST(STORE_INIT(%g2, %o0 + 0x20))
+ EX_ST(STORE_INIT(%g3, %o0 + 0x28))
+
+ EX_LD(LOAD_TWIN(%i1 + %i3, %g2, %g3))
+ add %i1, 64, %i1
+ MIX_THREE_WORDS(%o2, %o3, %g2, %i5, GLOBAL_SPARE, %o1)
+
+ EX_ST(STORE_INIT(%o2, %o0 + 0x30))
+ EX_ST(STORE_INIT(%o3, %o0 + 0x38))
+
+ subcc %g1, 64, %g1
+ bne,pt %XCC, 8b
add %o0, 64, %o0
-#undef SWIVEL_ONE_DWORD
-
- srl %g1, 3, %g1
ba,pt %XCC, 60f
- add %o1, %g1, %o1
+ add %i1, %i4, %i1
+
+9: EX_LD(LOAD_TWIN(%i1 + %o4, %o2, %o3))
+ MIX_THREE_WORDS(%g3, %o2, %o3, %i5, GLOBAL_SPARE, %o1)
+ LOAD(prefetch, %i1 + %i3, #one_read)
+
+ EX_ST(STORE_INIT(%g3, %o0 + 0x00))
+ EX_ST(STORE_INIT(%o2, %o0 + 0x08))
+
+ EX_LD(LOAD_TWIN(%i1 + %o5, %g2, %g3))
+ MIX_THREE_WORDS(%o3, %g2, %g3, %i5, GLOBAL_SPARE, %o1)
+
+ EX_ST(STORE_INIT(%o3, %o0 + 0x10))
+ EX_ST(STORE_INIT(%g2, %o0 + 0x18))
+
+ EX_LD(LOAD_TWIN(%i1 + %o7, %o2, %o3))
+ MIX_THREE_WORDS(%g3, %o2, %o3, %i5, GLOBAL_SPARE, %o1)
+
+ EX_ST(STORE_INIT(%g3, %o0 + 0x20))
+ EX_ST(STORE_INIT(%o2, %o0 + 0x28))
+
+ EX_LD(LOAD_TWIN(%i1 + %i3, %g2, %g3))
+ add %i1, 64, %i1
+ MIX_THREE_WORDS(%o3, %g2, %g3, %i5, GLOBAL_SPARE, %o1)
+
+ EX_ST(STORE_INIT(%o3, %o0 + 0x30))
+ EX_ST(STORE_INIT(%g2, %o0 + 0x38))
+
+ subcc %g1, 64, %g1
+ bne,pt %XCC, 9b
+ add %o0, 64, %o0
+
+ ba,pt %XCC, 60f
+ add %i1, %i4, %i1
10: /* Destination is 64-byte aligned, source was only 8-byte
* aligned but it has been subtracted by 8 and we perform
* one twin load ahead, then add 8 back into source when
* we finish the loop.
*/
- EX_LD(LOAD_TWIN(%o1, %o4, %o5))
-1: add %o1, 16, %o1
- EX_LD(LOAD_TWIN(%o1, %g2, %g3))
- add %o1, 16 + 32, %o1
- LOAD(prefetch, %o1, #one_read)
- sub %o1, 32, %o1
+ EX_LD(LOAD_TWIN(%i1, %o4, %o5))
+ mov 16, %o7
+ mov 32, %g2
+ mov 48, %g3
+ mov 64, %o1
+1: EX_LD(LOAD_TWIN(%i1 + %o7, %o2, %o3))
+ LOAD(prefetch, %i1 + %o1, #one_read)
EX_ST(STORE_INIT(%o5, %o0 + 0x00)) ! initializes cache line
- EX_ST(STORE_INIT(%g2, %o0 + 0x08))
- EX_LD(LOAD_TWIN(%o1, %o4, %o5))
- add %o1, 16, %o1
- EX_ST(STORE_INIT(%g3, %o0 + 0x10))
+ EX_ST(STORE_INIT(%o2, %o0 + 0x08))
+ EX_LD(LOAD_TWIN(%i1 + %g2, %o4, %o5))
+ EX_ST(STORE_INIT(%o3, %o0 + 0x10))
EX_ST(STORE_INIT(%o4, %o0 + 0x18))
- EX_LD(LOAD_TWIN(%o1, %g2, %g3))
- add %o1, 16, %o1
+ EX_LD(LOAD_TWIN(%i1 + %g3, %o2, %o3))
EX_ST(STORE_INIT(%o5, %o0 + 0x20))
- EX_ST(STORE_INIT(%g2, %o0 + 0x28))
- EX_LD(LOAD_TWIN(%o1, %o4, %o5))
- EX_ST(STORE_INIT(%g3, %o0 + 0x30))
+ EX_ST(STORE_INIT(%o2, %o0 + 0x28))
+ EX_LD(LOAD_TWIN(%i1 + %o1, %o4, %o5))
+ add %i1, 64, %i1
+ EX_ST(STORE_INIT(%o3, %o0 + 0x30))
EX_ST(STORE_INIT(%o4, %o0 + 0x38))
subcc %g1, 64, %g1
bne,pt %XCC, 1b
add %o0, 64, %o0
ba,pt %XCC, 60f
- add %o1, 0x8, %o1
+ add %i1, 0x8, %i1
50: /* Destination is 64-byte aligned, and source is 16-byte
* aligned.
*/
-1: EX_LD(LOAD_TWIN(%o1, %o4, %o5))
- add %o1, 16, %o1
- EX_LD(LOAD_TWIN(%o1, %g2, %g3))
- add %o1, 16 + 32, %o1
- LOAD(prefetch, %o1, #one_read)
- sub %o1, 32, %o1
+ mov 16, %o7
+ mov 32, %g2
+ mov 48, %g3
+ mov 64, %o1
+1: EX_LD(LOAD_TWIN(%i1 + %g0, %o4, %o5))
+ EX_LD(LOAD_TWIN(%i1 + %o7, %o2, %o3))
+ LOAD(prefetch, %i1 + %o1, #one_read)
EX_ST(STORE_INIT(%o4, %o0 + 0x00)) ! initializes cache line
EX_ST(STORE_INIT(%o5, %o0 + 0x08))
- EX_LD(LOAD_TWIN(%o1, %o4, %o5))
- add %o1, 16, %o1
- EX_ST(STORE_INIT(%g2, %o0 + 0x10))
- EX_ST(STORE_INIT(%g3, %o0 + 0x18))
- EX_LD(LOAD_TWIN(%o1, %g2, %g3))
- add %o1, 16, %o1
+ EX_LD(LOAD_TWIN(%i1 + %g2, %o4, %o5))
+ EX_ST(STORE_INIT(%o2, %o0 + 0x10))
+ EX_ST(STORE_INIT(%o3, %o0 + 0x18))
+ EX_LD(LOAD_TWIN(%i1 + %g3, %o2, %o3))
+ add %i1, 64, %i1
EX_ST(STORE_INIT(%o4, %o0 + 0x20))
EX_ST(STORE_INIT(%o5, %o0 + 0x28))
- EX_ST(STORE_INIT(%g2, %o0 + 0x30))
- EX_ST(STORE_INIT(%g3, %o0 + 0x38))
+ EX_ST(STORE_INIT(%o2, %o0 + 0x30))
+ EX_ST(STORE_INIT(%o3, %o0 + 0x38))
subcc %g1, 64, %g1
bne,pt %XCC, 1b
add %o0, 64, %o0
@@ -249,47 +304,47 @@
60:
membar #Sync
- /* %o2 contains any final bytes still needed to be copied
+ /* %i2 contains any final bytes still needed to be copied
* over. If anything is left, we copy it one byte at a time.
*/
- RESTORE_ASI(%o3)
- brz,pt %o2, 85f
- sub %o0, %o1, %o3
+ RESTORE_ASI(%i3)
+ brz,pt %i2, 85f
+ sub %o0, %i1, %i3
ba,a,pt %XCC, 90f
.align 64
70: /* 16 < len <= 64 */
bne,pn %XCC, 75f
- sub %o0, %o1, %o3
+ sub %o0, %i1, %i3
72:
- andn %o2, 0xf, %o4
- and %o2, 0xf, %o2
-1: subcc %o4, 0x10, %o4
- EX_LD(LOAD(ldx, %o1, %o5))
- add %o1, 0x08, %o1
- EX_LD(LOAD(ldx, %o1, %g1))
- sub %o1, 0x08, %o1
- EX_ST(STORE(stx, %o5, %o1 + %o3))
- add %o1, 0x8, %o1
- EX_ST(STORE(stx, %g1, %o1 + %o3))
+ andn %i2, 0xf, %i4
+ and %i2, 0xf, %i2
+1: subcc %i4, 0x10, %i4
+ EX_LD(LOAD(ldx, %i1, %i5))
+ add %i1, 0x08, %i1
+ EX_LD(LOAD(ldx, %i1, %g1))
+ sub %i1, 0x08, %i1
+ EX_ST(STORE(stx, %i5, %i1 + %i3))
+ add %i1, 0x8, %i1
+ EX_ST(STORE(stx, %g1, %i1 + %i3))
bgu,pt %XCC, 1b
- add %o1, 0x8, %o1
-73: andcc %o2, 0x8, %g0
+ add %i1, 0x8, %i1
+73: andcc %i2, 0x8, %g0
be,pt %XCC, 1f
nop
- sub %o2, 0x8, %o2
- EX_LD(LOAD(ldx, %o1, %o5))
- EX_ST(STORE(stx, %o5, %o1 + %o3))
- add %o1, 0x8, %o1
-1: andcc %o2, 0x4, %g0
+ sub %i2, 0x8, %i2
+ EX_LD(LOAD(ldx, %i1, %i5))
+ EX_ST(STORE(stx, %i5, %i1 + %i3))
+ add %i1, 0x8, %i1
+1: andcc %i2, 0x4, %g0
be,pt %XCC, 1f
nop
- sub %o2, 0x4, %o2
- EX_LD(LOAD(lduw, %o1, %o5))
- EX_ST(STORE(stw, %o5, %o1 + %o3))
- add %o1, 0x4, %o1
-1: cmp %o2, 0
+ sub %i2, 0x4, %i2
+ EX_LD(LOAD(lduw, %i1, %i5))
+ EX_ST(STORE(stw, %i5, %i1 + %i3))
+ add %i1, 0x4, %i1
+1: cmp %i2, 0
be,pt %XCC, 85f
nop
ba,pt %xcc, 90f
@@ -300,71 +355,71 @@
sub %g1, 0x8, %g1
be,pn %icc, 2f
sub %g0, %g1, %g1
- sub %o2, %g1, %o2
+ sub %i2, %g1, %i2
1: subcc %g1, 1, %g1
- EX_LD(LOAD(ldub, %o1, %o5))
- EX_ST(STORE(stb, %o5, %o1 + %o3))
+ EX_LD(LOAD(ldub, %i1, %i5))
+ EX_ST(STORE(stb, %i5, %i1 + %i3))
bgu,pt %icc, 1b
- add %o1, 1, %o1
+ add %i1, 1, %i1
-2: add %o1, %o3, %o0
- andcc %o1, 0x7, %g1
+2: add %i1, %i3, %o0
+ andcc %i1, 0x7, %g1
bne,pt %icc, 8f
sll %g1, 3, %g1
- cmp %o2, 16
+ cmp %i2, 16
bgeu,pt %icc, 72b
nop
ba,a,pt %xcc, 73b
-8: mov 64, %o3
- andn %o1, 0x7, %o1
- EX_LD(LOAD(ldx, %o1, %g2))
- sub %o3, %g1, %o3
- andn %o2, 0x7, %o4
+8: mov 64, %i3
+ andn %i1, 0x7, %i1
+ EX_LD(LOAD(ldx, %i1, %g2))
+ sub %i3, %g1, %i3
+ andn %i2, 0x7, %i4
sllx %g2, %g1, %g2
-1: add %o1, 0x8, %o1
- EX_LD(LOAD(ldx, %o1, %g3))
- subcc %o4, 0x8, %o4
- srlx %g3, %o3, %o5
- or %o5, %g2, %o5
- EX_ST(STORE(stx, %o5, %o0))
+1: add %i1, 0x8, %i1
+ EX_LD(LOAD(ldx, %i1, %g3))
+ subcc %i4, 0x8, %i4
+ srlx %g3, %i3, %i5
+ or %i5, %g2, %i5
+ EX_ST(STORE(stx, %i5, %o0))
add %o0, 0x8, %o0
bgu,pt %icc, 1b
sllx %g3, %g1, %g2
srl %g1, 3, %g1
- andcc %o2, 0x7, %o2
+ andcc %i2, 0x7, %i2
be,pn %icc, 85f
- add %o1, %g1, %o1
+ add %i1, %g1, %i1
ba,pt %xcc, 90f
- sub %o0, %o1, %o3
+ sub %o0, %i1, %i3
.align 64
80: /* 0 < len <= 16 */
- andcc %o3, 0x3, %g0
+ andcc %i3, 0x3, %g0
bne,pn %XCC, 90f
- sub %o0, %o1, %o3
+ sub %o0, %i1, %i3
1:
- subcc %o2, 4, %o2
- EX_LD(LOAD(lduw, %o1, %g1))
- EX_ST(STORE(stw, %g1, %o1 + %o3))
+ subcc %i2, 4, %i2
+ EX_LD(LOAD(lduw, %i1, %g1))
+ EX_ST(STORE(stw, %g1, %i1 + %i3))
bgu,pt %XCC, 1b
- add %o1, 4, %o1
+ add %i1, 4, %i1
-85: retl
- mov EX_RETVAL(GLOBAL_SPARE), %o0
+85: ret
+ restore EX_RETVAL(%i0), %g0, %o0
.align 32
90:
- subcc %o2, 1, %o2
- EX_LD(LOAD(ldub, %o1, %g1))
- EX_ST(STORE(stb, %g1, %o1 + %o3))
+ subcc %i2, 1, %i2
+ EX_LD(LOAD(ldub, %i1, %g1))
+ EX_ST(STORE(stb, %g1, %i1 + %i3))
bgu,pt %XCC, 90b
- add %o1, 1, %o1
- retl
- mov EX_RETVAL(GLOBAL_SPARE), %o0
+ add %i1, 1, %i1
+ ret
+ restore EX_RETVAL(%i0), %g0, %o0
.size FUNC_NAME, .-FUNC_NAME