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-rw-r--r--arch/sh/lib/Makefile7
-rw-r--r--arch/sh/lib/udivsi3.S667
-rw-r--r--arch/sh/lib/udivsi3_i4i-Os.S (renamed from arch/sh/lib/udivsi3-Os.S)2
-rw-r--r--arch/sh/lib/udivsi3_i4i.S666
4 files changed, 713 insertions, 629 deletions
diff --git a/arch/sh/lib/Makefile b/arch/sh/lib/Makefile
index a30acb8342d9..aaea580b65bb 100644
--- a/arch/sh/lib/Makefile
+++ b/arch/sh/lib/Makefile
@@ -10,12 +10,13 @@ lib-y += movmem.o ashldi3.o ashrdi3.o lshrdi3.o \
ashlsi3.o ashrsi3.o ashiftrt.o lshrsi3.o \
udiv_qrnnd.o
-udivsi3-y := udivsi3-Os.o
+udivsi3-y := udivsi3_i4i-Os.o
ifneq ($(CONFIG_CC_OPTIMIZE_FOR_SIZE),y)
-udivsi3-$(CONFIG_CPU_SH3) := udivsi3.o
-udivsi3-$(CONFIG_CPU_SH4) := udivsi3.o
+udivsi3-$(CONFIG_CPU_SH3) := udivsi3_i4i.o
+udivsi3-$(CONFIG_CPU_SH4) := udivsi3_i4i.o
endif
+udivsi3-y += udivsi3.o
obj-y += io.o
diff --git a/arch/sh/lib/udivsi3.S b/arch/sh/lib/udivsi3.S
index 388e15d75193..72157ab5c314 100644
--- a/arch/sh/lib/udivsi3.S
+++ b/arch/sh/lib/udivsi3.S
@@ -1,5 +1,5 @@
/* Copyright (C) 1994, 1995, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
- 2004, 2005, 2006
+ 2004, 2005
Free Software Foundation, Inc.
This file is free software; you can redistribute it and/or modify it
@@ -30,639 +30,58 @@ Boston, MA 02110-1301, USA. */
!! Contributed by Steve Chamberlain.
!! sac@cygnus.com
-!! ashiftrt_r4_x, ___ashrsi3, ___ashlsi3, ___lshrsi3 routines
-!! recoded in assembly by Toshiyasu Morita
-!! tm@netcom.com
-
-/* SH2 optimizations for ___ashrsi3, ___ashlsi3, ___lshrsi3 and
- ELF local label prefixes by J"orn Rennecke
- amylaar@cygnus.com */
-
-/* This code used shld, thus is not suitable for SH1 / SH2. */
-
-/* Signed / unsigned division without use of FPU, optimized for SH4.
- Uses a lookup table for divisors in the range -128 .. +128, and
- div1 with case distinction for larger divisors in three more ranges.
- The code is lumped together with the table to allow the use of mova. */
-#ifdef CONFIG_CPU_LITTLE_ENDIAN
-#define L_LSB 0
-#define L_LSWMSB 1
-#define L_MSWLSB 2
-#else
-#define L_LSB 3
-#define L_LSWMSB 2
-#define L_MSWLSB 1
-#endif
-
.balign 4
- .global __udivsi3_i4i
- .global __udivsi3_i4
.global __udivsi3
- .set __udivsi3_i4, __udivsi3_i4i
- .set __udivsi3, __udivsi3_i4i
- .type __udivsi3_i4i, @function
-__udivsi3_i4i:
- mov.w c128_w, r1
- div0u
- mov r4,r0
- shlr8 r0
- cmp/hi r1,r5
- extu.w r5,r1
- bf udiv_le128
- cmp/eq r5,r1
- bf udiv_ge64k
- shlr r0
- mov r5,r1
- shll16 r5
- mov.l r4,@-r15
- div1 r5,r0
- mov.l r1,@-r15
- div1 r5,r0
- div1 r5,r0
- bra udiv_25
- div1 r5,r0
-
-div_le128:
- mova div_table_ix,r0
- bra div_le128_2
- mov.b @(r0,r5),r1
-udiv_le128:
- mov.l r4,@-r15
- mova div_table_ix,r0
- mov.b @(r0,r5),r1
- mov.l r5,@-r15
-div_le128_2:
- mova div_table_inv,r0
- mov.l @(r0,r1),r1
- mov r5,r0
- tst #0xfe,r0
- mova div_table_clz,r0
- dmulu.l r1,r4
- mov.b @(r0,r5),r1
- bt/s div_by_1
- mov r4,r0
- mov.l @r15+,r5
- sts mach,r0
- /* clrt */
- addc r4,r0
- mov.l @r15+,r4
- rotcr r0
- rts
- shld r1,r0
-
-div_by_1_neg:
- neg r4,r0
-div_by_1:
- mov.l @r15+,r5
- rts
- mov.l @r15+,r4
-
-div_ge64k:
- bt/s div_r8
- div0u
- shll8 r5
- bra div_ge64k_2
- div1 r5,r0
-udiv_ge64k:
- cmp/hi r0,r5
- mov r5,r1
- bt udiv_r8
- shll8 r5
- mov.l r4,@-r15
- div1 r5,r0
- mov.l r1,@-r15
-div_ge64k_2:
- div1 r5,r0
- mov.l zero_l,r1
- .rept 4
- div1 r5,r0
- .endr
- mov.l r1,@-r15
- div1 r5,r0
- mov.w m256_w,r1
- div1 r5,r0
- mov.b r0,@(L_LSWMSB,r15)
- xor r4,r0
- and r1,r0
- bra div_ge64k_end
- xor r4,r0
-
-div_r8:
- shll16 r4
- bra div_r8_2
- shll8 r4
-udiv_r8:
- mov.l r4,@-r15
- shll16 r4
- clrt
- shll8 r4
- mov.l r5,@-r15
-div_r8_2:
- rotcl r4
- mov r0,r1
- div1 r5,r1
- mov r4,r0
- rotcl r0
- mov r5,r4
- div1 r5,r1
- .rept 5
- rotcl r0; div1 r5,r1
- .endr
- rotcl r0
- mov.l @r15+,r5
- div1 r4,r1
- mov.l @r15+,r4
- rts
- rotcl r0
-
- .global __sdivsi3_i4i
- .global __sdivsi3_i4
- .global __sdivsi3
- .set __sdivsi3_i4, __sdivsi3_i4i
- .set __sdivsi3, __sdivsi3_i4i
- .type __sdivsi3_i4i, @function
- /* This is link-compatible with a __sdivsi3 call,
- but we effectively clobber only r1. */
-__sdivsi3_i4i:
- mov.l r4,@-r15
- cmp/pz r5
- mov.w c128_w, r1
- bt/s pos_divisor
- cmp/pz r4
- mov.l r5,@-r15
- neg r5,r5
- bt/s neg_result
- cmp/hi r1,r5
- neg r4,r4
-pos_result:
+ .type __udivsi3, @function
+div8:
+ div1 r5,r4
+div7:
+ div1 r5,r4; div1 r5,r4; div1 r5,r4
+ div1 r5,r4; div1 r5,r4; div1 r5,r4; rts; div1 r5,r4
+
+divx4:
+ div1 r5,r4; rotcl r0
+ div1 r5,r4; rotcl r0
+ div1 r5,r4; rotcl r0
+ rts; div1 r5,r4
+
+__udivsi3:
+ sts.l pr,@-r15
extu.w r5,r0
- bf div_le128
cmp/eq r5,r0
- mov r4,r0
- shlr8 r0
- bf/s div_ge64k
- cmp/hi r0,r5
+ bf/s large_divisor
div0u
+ swap.w r4,r0
+ shlr16 r4
+ bsr div8
shll16 r5
- div1 r5,r0
- div1 r5,r0
- div1 r5,r0
-udiv_25:
- mov.l zero_l,r1
- div1 r5,r0
- div1 r5,r0
- mov.l r1,@-r15
- .rept 3
- div1 r5,r0
- .endr
- mov.b r0,@(L_MSWLSB,r15)
+ bsr div7
+ div1 r5,r4
+ xtrct r4,r0
+ xtrct r0,r4
+ bsr div8
+ swap.w r4,r4
+ bsr div7
+ div1 r5,r4
+ lds.l @r15+,pr
xtrct r4,r0
swap.w r0,r0
- .rept 8
- div1 r5,r0
- .endr
- mov.b r0,@(L_LSWMSB,r15)
-div_ge64k_end:
- .rept 8
- div1 r5,r0
- .endr
- mov.l @r15+,r4 ! zero-extension and swap using LS unit.
- extu.b r0,r0
- mov.l @r15+,r5
- or r4,r0
- mov.l @r15+,r4
- rts
rotcl r0
-
-div_le128_neg:
- tst #0xfe,r0
- mova div_table_ix,r0
- mov.b @(r0,r5),r1
- mova div_table_inv,r0
- bt/s div_by_1_neg
- mov.l @(r0,r1),r1
- mova div_table_clz,r0
- dmulu.l r1,r4
- mov.b @(r0,r5),r1
- mov.l @r15+,r5
- sts mach,r0
- /* clrt */
- addc r4,r0
- mov.l @r15+,r4
- rotcr r0
- shld r1,r0
rts
- neg r0,r0
+ shlr16 r5
-pos_divisor:
- mov.l r5,@-r15
- bt/s pos_result
- cmp/hi r1,r5
- neg r4,r4
-neg_result:
- extu.w r5,r0
- bf div_le128_neg
- cmp/eq r5,r0
- mov r4,r0
- shlr8 r0
- bf/s div_ge64k_neg
- cmp/hi r0,r5
- div0u
- mov.l zero_l,r1
- shll16 r5
- div1 r5,r0
- mov.l r1,@-r15
- .rept 7
- div1 r5,r0
- .endr
- mov.b r0,@(L_MSWLSB,r15)
+large_divisor:
+ mov #0,r0
xtrct r4,r0
- swap.w r0,r0
- .rept 8
- div1 r5,r0
- .endr
- mov.b r0,@(L_LSWMSB,r15)
-div_ge64k_neg_end:
- .rept 8
- div1 r5,r0
- .endr
- mov.l @r15+,r4 ! zero-extension and swap using LS unit.
- extu.b r0,r1
- mov.l @r15+,r5
- or r4,r1
-div_r8_neg_end:
- mov.l @r15+,r4
- rotcl r1
+ xtrct r0,r4
+ bsr divx4
+ rotcl r0
+ bsr divx4
+ rotcl r0
+ bsr divx4
+ rotcl r0
+ bsr divx4
+ rotcl r0
+ lds.l @r15+,pr
rts
- neg r1,r0
-
-div_ge64k_neg:
- bt/s div_r8_neg
- div0u
- shll8 r5
- mov.l zero_l,r1
- .rept 6
- div1 r5,r0
- .endr
- mov.l r1,@-r15
- div1 r5,r0
- mov.w m256_w,r1
- div1 r5,r0
- mov.b r0,@(L_LSWMSB,r15)
- xor r4,r0
- and r1,r0
- bra div_ge64k_neg_end
- xor r4,r0
-
-c128_w:
- .word 128
-
-div_r8_neg:
- clrt
- shll16 r4
- mov r4,r1
- shll8 r1
- mov r5,r4
- .rept 7
- rotcl r1; div1 r5,r0
- .endr
- mov.l @r15+,r5
- rotcl r1
- bra div_r8_neg_end
- div1 r4,r0
-
-m256_w:
- .word 0xff00
-/* This table has been generated by divtab-sh4.c. */
- .balign 4
-div_table_clz:
- .byte 0
- .byte 1
- .byte 0
- .byte -1
- .byte -1
- .byte -2
- .byte -2
- .byte -2
- .byte -2
- .byte -3
- .byte -3
- .byte -3
- .byte -3
- .byte -3
- .byte -3
- .byte -3
- .byte -3
- .byte -4
- .byte -4
- .byte -4
- .byte -4
- .byte -4
- .byte -4
- .byte -4
- .byte -4
- .byte -4
- .byte -4
- .byte -4
- .byte -4
- .byte -4
- .byte -4
- .byte -4
- .byte -4
- .byte -5
- .byte -5
- .byte -5
- .byte -5
- .byte -5
- .byte -5
- .byte -5
- .byte -5
- .byte -5
- .byte -5
- .byte -5
- .byte -5
- .byte -5
- .byte -5
- .byte -5
- .byte -5
- .byte -5
- .byte -5
- .byte -5
- .byte -5
- .byte -5
- .byte -5
- .byte -5
- .byte -5
- .byte -5
- .byte -5
- .byte -5
- .byte -5
- .byte -5
- .byte -5
- .byte -5
- .byte -5
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
- .byte -6
-/* Lookup table translating positive divisor to index into table of
- normalized inverse. N.B. the '0' entry is also the last entry of the
- previous table, and causes an unaligned access for division by zero. */
-div_table_ix:
- .byte -6
- .byte -128
- .byte -128
- .byte 0
- .byte -128
- .byte -64
- .byte 0
- .byte 64
- .byte -128
- .byte -96
- .byte -64
- .byte -32
- .byte 0
- .byte 32
- .byte 64
- .byte 96
- .byte -128
- .byte -112
- .byte -96
- .byte -80
- .byte -64
- .byte -48
- .byte -32
- .byte -16
- .byte 0
- .byte 16
- .byte 32
- .byte 48
- .byte 64
- .byte 80
- .byte 96
- .byte 112
- .byte -128
- .byte -120
- .byte -112
- .byte -104
- .byte -96
- .byte -88
- .byte -80
- .byte -72
- .byte -64
- .byte -56
- .byte -48
- .byte -40
- .byte -32
- .byte -24
- .byte -16
- .byte -8
- .byte 0
- .byte 8
- .byte 16
- .byte 24
- .byte 32
- .byte 40
- .byte 48
- .byte 56
- .byte 64
- .byte 72
- .byte 80
- .byte 88
- .byte 96
- .byte 104
- .byte 112
- .byte 120
- .byte -128
- .byte -124
- .byte -120
- .byte -116
- .byte -112
- .byte -108
- .byte -104
- .byte -100
- .byte -96
- .byte -92
- .byte -88
- .byte -84
- .byte -80
- .byte -76
- .byte -72
- .byte -68
- .byte -64
- .byte -60
- .byte -56
- .byte -52
- .byte -48
- .byte -44
- .byte -40
- .byte -36
- .byte -32
- .byte -28
- .byte -24
- .byte -20
- .byte -16
- .byte -12
- .byte -8
- .byte -4
- .byte 0
- .byte 4
- .byte 8
- .byte 12
- .byte 16
- .byte 20
- .byte 24
- .byte 28
- .byte 32
- .byte 36
- .byte 40
- .byte 44
- .byte 48
- .byte 52
- .byte 56
- .byte 60
- .byte 64
- .byte 68
- .byte 72
- .byte 76
- .byte 80
- .byte 84
- .byte 88
- .byte 92
- .byte 96
- .byte 100
- .byte 104
- .byte 108
- .byte 112
- .byte 116
- .byte 120
- .byte 124
- .byte -128
-/* 1/64 .. 1/127, normalized. There is an implicit leading 1 in bit 32. */
- .balign 4
-zero_l:
- .long 0x0
- .long 0xF81F81F9
- .long 0xF07C1F08
- .long 0xE9131AC0
- .long 0xE1E1E1E2
- .long 0xDAE6076C
- .long 0xD41D41D5
- .long 0xCD856891
- .long 0xC71C71C8
- .long 0xC0E07039
- .long 0xBACF914D
- .long 0xB4E81B4F
- .long 0xAF286BCB
- .long 0xA98EF607
- .long 0xA41A41A5
- .long 0x9EC8E952
- .long 0x9999999A
- .long 0x948B0FCE
- .long 0x8F9C18FA
- .long 0x8ACB90F7
- .long 0x86186187
- .long 0x81818182
- .long 0x7D05F418
- .long 0x78A4C818
- .long 0x745D1746
- .long 0x702E05C1
- .long 0x6C16C16D
- .long 0x68168169
- .long 0x642C8591
- .long 0x60581606
- .long 0x5C9882BA
- .long 0x58ED2309
-div_table_inv:
- .long 0x55555556
- .long 0x51D07EAF
- .long 0x4E5E0A73
- .long 0x4AFD6A06
- .long 0x47AE147B
- .long 0x446F8657
- .long 0x41414142
- .long 0x3E22CBCF
- .long 0x3B13B13C
- .long 0x38138139
- .long 0x3521CFB3
- .long 0x323E34A3
- .long 0x2F684BDB
- .long 0x2C9FB4D9
- .long 0x29E4129F
- .long 0x27350B89
- .long 0x24924925
- .long 0x21FB7813
- .long 0x1F7047DD
- .long 0x1CF06ADB
- .long 0x1A7B9612
- .long 0x18118119
- .long 0x15B1E5F8
- .long 0x135C8114
- .long 0x11111112
- .long 0xECF56BF
- .long 0xC9714FC
- .long 0xA6810A7
- .long 0x8421085
- .long 0x624DD30
- .long 0x4104105
- .long 0x2040811
- /* maximum error: 0.987342 scaled: 0.921875*/
+ rotcl r0
diff --git a/arch/sh/lib/udivsi3-Os.S b/arch/sh/lib/udivsi3_i4i-Os.S
index 110c5ea769e0..4835553e1ea9 100644
--- a/arch/sh/lib/udivsi3-Os.S
+++ b/arch/sh/lib/udivsi3_i4i-Os.S
@@ -41,9 +41,7 @@ Boston, MA 02110-1301, USA. */
.balign 4
.global __udivsi3_i4i
.global __udivsi3_i4
- .global __udivsi3
.set __udivsi3_i4, __udivsi3_i4i
- .set __udivsi3, __udivsi3_i4i
.type __udivsi3_i4i, @function
.type __sdivsi3_i4i, @function
__udivsi3_i4i:
diff --git a/arch/sh/lib/udivsi3_i4i.S b/arch/sh/lib/udivsi3_i4i.S
new file mode 100644
index 000000000000..f1a79d9c5015
--- /dev/null
+++ b/arch/sh/lib/udivsi3_i4i.S
@@ -0,0 +1,666 @@
+/* Copyright (C) 1994, 1995, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
+ 2004, 2005, 2006
+ Free Software Foundation, Inc.
+
+This file is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the
+Free Software Foundation; either version 2, or (at your option) any
+later version.
+
+In addition to the permissions in the GNU General Public License, the
+Free Software Foundation gives you unlimited permission to link the
+compiled version of this file into combinations with other programs,
+and to distribute those combinations without any restriction coming
+from the use of this file. (The General Public License restrictions
+do apply in other respects; for example, they cover modification of
+the file, and distribution when not linked into a combine
+executable.)
+
+This file is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; see the file COPYING. If not, write to
+the Free Software Foundation, 51 Franklin Street, Fifth Floor,
+Boston, MA 02110-1301, USA. */
+
+!! libgcc routines for the Renesas / SuperH SH CPUs.
+!! Contributed by Steve Chamberlain.
+!! sac@cygnus.com
+
+!! ashiftrt_r4_x, ___ashrsi3, ___ashlsi3, ___lshrsi3 routines
+!! recoded in assembly by Toshiyasu Morita
+!! tm@netcom.com
+
+/* SH2 optimizations for ___ashrsi3, ___ashlsi3, ___lshrsi3 and
+ ELF local label prefixes by J"orn Rennecke
+ amylaar@cygnus.com */
+
+/* This code used shld, thus is not suitable for SH1 / SH2. */
+
+/* Signed / unsigned division without use of FPU, optimized for SH4.
+ Uses a lookup table for divisors in the range -128 .. +128, and
+ div1 with case distinction for larger divisors in three more ranges.
+ The code is lumped together with the table to allow the use of mova. */
+#ifdef CONFIG_CPU_LITTLE_ENDIAN
+#define L_LSB 0
+#define L_LSWMSB 1
+#define L_MSWLSB 2
+#else
+#define L_LSB 3
+#define L_LSWMSB 2
+#define L_MSWLSB 1
+#endif
+
+ .balign 4
+ .global __udivsi3_i4i
+ .global __udivsi3_i4
+ .set __udivsi3_i4, __udivsi3_i4i
+ .type __udivsi3_i4i, @function
+__udivsi3_i4i:
+ mov.w c128_w, r1
+ div0u
+ mov r4,r0
+ shlr8 r0
+ cmp/hi r1,r5
+ extu.w r5,r1
+ bf udiv_le128
+ cmp/eq r5,r1
+ bf udiv_ge64k
+ shlr r0
+ mov r5,r1
+ shll16 r5
+ mov.l r4,@-r15
+ div1 r5,r0
+ mov.l r1,@-r15
+ div1 r5,r0
+ div1 r5,r0
+ bra udiv_25
+ div1 r5,r0
+
+div_le128:
+ mova div_table_ix,r0
+ bra div_le128_2
+ mov.b @(r0,r5),r1
+udiv_le128:
+ mov.l r4,@-r15
+ mova div_table_ix,r0
+ mov.b @(r0,r5),r1
+ mov.l r5,@-r15
+div_le128_2:
+ mova div_table_inv,r0
+ mov.l @(r0,r1),r1
+ mov r5,r0
+ tst #0xfe,r0
+ mova div_table_clz,r0
+ dmulu.l r1,r4
+ mov.b @(r0,r5),r1
+ bt/s div_by_1
+ mov r4,r0
+ mov.l @r15+,r5
+ sts mach,r0
+ /* clrt */
+ addc r4,r0
+ mov.l @r15+,r4
+ rotcr r0
+ rts
+ shld r1,r0
+
+div_by_1_neg:
+ neg r4,r0
+div_by_1:
+ mov.l @r15+,r5
+ rts
+ mov.l @r15+,r4
+
+div_ge64k:
+ bt/s div_r8
+ div0u
+ shll8 r5
+ bra div_ge64k_2
+ div1 r5,r0
+udiv_ge64k:
+ cmp/hi r0,r5
+ mov r5,r1
+ bt udiv_r8
+ shll8 r5
+ mov.l r4,@-r15
+ div1 r5,r0
+ mov.l r1,@-r15
+div_ge64k_2:
+ div1 r5,r0
+ mov.l zero_l,r1
+ .rept 4
+ div1 r5,r0
+ .endr
+ mov.l r1,@-r15
+ div1 r5,r0
+ mov.w m256_w,r1
+ div1 r5,r0
+ mov.b r0,@(L_LSWMSB,r15)
+ xor r4,r0
+ and r1,r0
+ bra div_ge64k_end
+ xor r4,r0
+
+div_r8:
+ shll16 r4
+ bra div_r8_2
+ shll8 r4
+udiv_r8:
+ mov.l r4,@-r15
+ shll16 r4
+ clrt
+ shll8 r4
+ mov.l r5,@-r15
+div_r8_2:
+ rotcl r4
+ mov r0,r1
+ div1 r5,r1
+ mov r4,r0
+ rotcl r0
+ mov r5,r4
+ div1 r5,r1
+ .rept 5
+ rotcl r0; div1 r5,r1
+ .endr
+ rotcl r0
+ mov.l @r15+,r5
+ div1 r4,r1
+ mov.l @r15+,r4
+ rts
+ rotcl r0
+
+ .global __sdivsi3_i4i
+ .global __sdivsi3_i4
+ .global __sdivsi3
+ .set __sdivsi3_i4, __sdivsi3_i4i
+ .set __sdivsi3, __sdivsi3_i4i
+ .type __sdivsi3_i4i, @function
+ /* This is link-compatible with a __sdivsi3 call,
+ but we effectively clobber only r1. */
+__sdivsi3_i4i:
+ mov.l r4,@-r15
+ cmp/pz r5
+ mov.w c128_w, r1
+ bt/s pos_divisor
+ cmp/pz r4
+ mov.l r5,@-r15
+ neg r5,r5
+ bt/s neg_result
+ cmp/hi r1,r5
+ neg r4,r4
+pos_result:
+ extu.w r5,r0
+ bf div_le128
+ cmp/eq r5,r0
+ mov r4,r0
+ shlr8 r0
+ bf/s div_ge64k
+ cmp/hi r0,r5
+ div0u
+ shll16 r5
+ div1 r5,r0
+ div1 r5,r0
+ div1 r5,r0
+udiv_25:
+ mov.l zero_l,r1
+ div1 r5,r0
+ div1 r5,r0
+ mov.l r1,@-r15
+ .rept 3
+ div1 r5,r0
+ .endr
+ mov.b r0,@(L_MSWLSB,r15)
+ xtrct r4,r0
+ swap.w r0,r0
+ .rept 8
+ div1 r5,r0
+ .endr
+ mov.b r0,@(L_LSWMSB,r15)
+div_ge64k_end:
+ .rept 8
+ div1 r5,r0
+ .endr
+ mov.l @r15+,r4 ! zero-extension and swap using LS unit.
+ extu.b r0,r0
+ mov.l @r15+,r5
+ or r4,r0
+ mov.l @r15+,r4
+ rts
+ rotcl r0
+
+div_le128_neg:
+ tst #0xfe,r0
+ mova div_table_ix,r0
+ mov.b @(r0,r5),r1
+ mova div_table_inv,r0
+ bt/s div_by_1_neg
+ mov.l @(r0,r1),r1
+ mova div_table_clz,r0
+ dmulu.l r1,r4
+ mov.b @(r0,r5),r1
+ mov.l @r15+,r5
+ sts mach,r0
+ /* clrt */
+ addc r4,r0
+ mov.l @r15+,r4
+ rotcr r0
+ shld r1,r0
+ rts
+ neg r0,r0
+
+pos_divisor:
+ mov.l r5,@-r15
+ bt/s pos_result
+ cmp/hi r1,r5
+ neg r4,r4
+neg_result:
+ extu.w r5,r0
+ bf div_le128_neg
+ cmp/eq r5,r0
+ mov r4,r0
+ shlr8 r0
+ bf/s div_ge64k_neg
+ cmp/hi r0,r5
+ div0u
+ mov.l zero_l,r1
+ shll16 r5
+ div1 r5,r0
+ mov.l r1,@-r15
+ .rept 7
+ div1 r5,r0
+ .endr
+ mov.b r0,@(L_MSWLSB,r15)
+ xtrct r4,r0
+ swap.w r0,r0
+ .rept 8
+ div1 r5,r0
+ .endr
+ mov.b r0,@(L_LSWMSB,r15)
+div_ge64k_neg_end:
+ .rept 8
+ div1 r5,r0
+ .endr
+ mov.l @r15+,r4 ! zero-extension and swap using LS unit.
+ extu.b r0,r1
+ mov.l @r15+,r5
+ or r4,r1
+div_r8_neg_end:
+ mov.l @r15+,r4
+ rotcl r1
+ rts
+ neg r1,r0
+
+div_ge64k_neg:
+ bt/s div_r8_neg
+ div0u
+ shll8 r5
+ mov.l zero_l,r1
+ .rept 6
+ div1 r5,r0
+ .endr
+ mov.l r1,@-r15
+ div1 r5,r0
+ mov.w m256_w,r1
+ div1 r5,r0
+ mov.b r0,@(L_LSWMSB,r15)
+ xor r4,r0
+ and r1,r0
+ bra div_ge64k_neg_end
+ xor r4,r0
+
+c128_w:
+ .word 128
+
+div_r8_neg:
+ clrt
+ shll16 r4
+ mov r4,r1
+ shll8 r1
+ mov r5,r4
+ .rept 7
+ rotcl r1; div1 r5,r0
+ .endr
+ mov.l @r15+,r5
+ rotcl r1
+ bra div_r8_neg_end
+ div1 r4,r0
+
+m256_w:
+ .word 0xff00
+/* This table has been generated by divtab-sh4.c. */
+ .balign 4
+div_table_clz:
+ .byte 0
+ .byte 1
+ .byte 0
+ .byte -1
+ .byte -1
+ .byte -2
+ .byte -2
+ .byte -2
+ .byte -2
+ .byte -3
+ .byte -3
+ .byte -3
+ .byte -3
+ .byte -3
+ .byte -3
+ .byte -3
+ .byte -3
+ .byte -4
+ .byte -4
+ .byte -4
+ .byte -4
+ .byte -4
+ .byte -4
+ .byte -4
+ .byte -4
+ .byte -4
+ .byte -4
+ .byte -4
+ .byte -4
+ .byte -4
+ .byte -4
+ .byte -4
+ .byte -4
+ .byte -5
+ .byte -5
+ .byte -5
+ .byte -5
+ .byte -5
+ .byte -5
+ .byte -5
+ .byte -5
+ .byte -5
+ .byte -5
+ .byte -5
+ .byte -5
+ .byte -5
+ .byte -5
+ .byte -5
+ .byte -5
+ .byte -5
+ .byte -5
+ .byte -5
+ .byte -5
+ .byte -5
+ .byte -5
+ .byte -5
+ .byte -5
+ .byte -5
+ .byte -5
+ .byte -5
+ .byte -5
+ .byte -5
+ .byte -5
+ .byte -5
+ .byte -5
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+ .byte -6
+/* Lookup table translating positive divisor to index into table of
+ normalized inverse. N.B. the '0' entry is also the last entry of the
+ previous table, and causes an unaligned access for division by zero. */
+div_table_ix:
+ .byte -6
+ .byte -128
+ .byte -128
+ .byte 0
+ .byte -128
+ .byte -64
+ .byte 0
+ .byte 64
+ .byte -128
+ .byte -96
+ .byte -64
+ .byte -32
+ .byte 0
+ .byte 32
+ .byte 64
+ .byte 96
+ .byte -128
+ .byte -112
+ .byte -96
+ .byte -80
+ .byte -64
+ .byte -48
+ .byte -32
+ .byte -16
+ .byte 0
+ .byte 16
+ .byte 32
+ .byte 48
+ .byte 64
+ .byte 80
+ .byte 96
+ .byte 112
+ .byte -128
+ .byte -120
+ .byte -112
+ .byte -104
+ .byte -96
+ .byte -88
+ .byte -80
+ .byte -72
+ .byte -64
+ .byte -56
+ .byte -48
+ .byte -40
+ .byte -32
+ .byte -24
+ .byte -16
+ .byte -8
+ .byte 0
+ .byte 8
+ .byte 16
+ .byte 24
+ .byte 32
+ .byte 40
+ .byte 48
+ .byte 56
+ .byte 64
+ .byte 72
+ .byte 80
+ .byte 88
+ .byte 96
+ .byte 104
+ .byte 112
+ .byte 120
+ .byte -128
+ .byte -124
+ .byte -120
+ .byte -116
+ .byte -112
+ .byte -108
+ .byte -104
+ .byte -100
+ .byte -96
+ .byte -92
+ .byte -88
+ .byte -84
+ .byte -80
+ .byte -76
+ .byte -72
+ .byte -68
+ .byte -64
+ .byte -60
+ .byte -56
+ .byte -52
+ .byte -48
+ .byte -44
+ .byte -40
+ .byte -36
+ .byte -32
+ .byte -28
+ .byte -24
+ .byte -20
+ .byte -16
+ .byte -12
+ .byte -8
+ .byte -4
+ .byte 0
+ .byte 4
+ .byte 8
+ .byte 12
+ .byte 16
+ .byte 20
+ .byte 24
+ .byte 28
+ .byte 32
+ .byte 36
+ .byte 40
+ .byte 44
+ .byte 48
+ .byte 52
+ .byte 56
+ .byte 60
+ .byte 64
+ .byte 68
+ .byte 72
+ .byte 76
+ .byte 80
+ .byte 84
+ .byte 88
+ .byte 92
+ .byte 96
+ .byte 100
+ .byte 104
+ .byte 108
+ .byte 112
+ .byte 116
+ .byte 120
+ .byte 124
+ .byte -128
+/* 1/64 .. 1/127, normalized. There is an implicit leading 1 in bit 32. */
+ .balign 4
+zero_l:
+ .long 0x0
+ .long 0xF81F81F9
+ .long 0xF07C1F08
+ .long 0xE9131AC0
+ .long 0xE1E1E1E2
+ .long 0xDAE6076C
+ .long 0xD41D41D5
+ .long 0xCD856891
+ .long 0xC71C71C8
+ .long 0xC0E07039
+ .long 0xBACF914D
+ .long 0xB4E81B4F
+ .long 0xAF286BCB
+ .long 0xA98EF607
+ .long 0xA41A41A5
+ .long 0x9EC8E952
+ .long 0x9999999A
+ .long 0x948B0FCE
+ .long 0x8F9C18FA
+ .long 0x8ACB90F7
+ .long 0x86186187
+ .long 0x81818182
+ .long 0x7D05F418
+ .long 0x78A4C818
+ .long 0x745D1746
+ .long 0x702E05C1
+ .long 0x6C16C16D
+ .long 0x68168169
+ .long 0x642C8591
+ .long 0x60581606
+ .long 0x5C9882BA
+ .long 0x58ED2309
+div_table_inv:
+ .long 0x55555556
+ .long 0x51D07EAF
+ .long 0x4E5E0A73
+ .long 0x4AFD6A06
+ .long 0x47AE147B
+ .long 0x446F8657
+ .long 0x41414142
+ .long 0x3E22CBCF
+ .long 0x3B13B13C
+ .long 0x38138139
+ .long 0x3521CFB3
+ .long 0x323E34A3
+ .long 0x2F684BDB
+ .long 0x2C9FB4D9
+ .long 0x29E4129F
+ .long 0x27350B89
+ .long 0x24924925
+ .long 0x21FB7813
+ .long 0x1F7047DD
+ .long 0x1CF06ADB
+ .long 0x1A7B9612
+ .long 0x18118119
+ .long 0x15B1E5F8
+ .long 0x135C8114
+ .long 0x11111112
+ .long 0xECF56BF
+ .long 0xC9714FC
+ .long 0xA6810A7
+ .long 0x8421085
+ .long 0x624DD30
+ .long 0x4104105
+ .long 0x2040811
+ /* maximum error: 0.987342 scaled: 0.921875*/
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-19 21:40:12 +0000