aboutsummaryrefslogtreecommitdiff
path: root/sysdeps/mips/mips3
diff options
context:
space:
mode:
authorRoland McGrath <roland@gnu.org>1995-10-16 01:37:51 +0000
committerRoland McGrath <roland@gnu.org>1995-10-16 01:37:51 +0000
commit8f5ca04bc7fd53741d80117df992995ace8f6d2d (patch)
treee39c13fc198b22ec55647259a8080051988e8c69 /sysdeps/mips/mips3
parent5d82cf5c55f56ae10d3b0a205d1fcc7de1cf56a0 (diff)
downloadglibc-8f5ca04bc7fd53741d80117df992995ace8f6d2d.tar
glibc-8f5ca04bc7fd53741d80117df992995ace8f6d2d.tar.gz
glibc-8f5ca04bc7fd53741d80117df992995ace8f6d2d.tar.bz2
glibc-8f5ca04bc7fd53741d80117df992995ace8f6d2d.zip
Sat Oct 14 02:52:36 1995 Ulrich Drepper <drepper@ipd.info.uni-karlsruhe.de>
* malloc/malloc.c (_malloc_internal): Performance fix. Move if statement out of loop. * stdio/_itoa.c, stdio/_itoa.h: Complete rewrite. Much faster implementation using GMP functions. Contributed by Torbjorn Granlund and Ulrich Drepper. * stdio/test_rdwr.c: Include <errno.h>. * sysdeps/i386/i586/Implies: New file. New highly optimized string functions for i[345]86. * sysdeps/i386/memchr.S, sysdeps/i386/memcmp.S: New files. * sysdeps/i386/stpcpy.S, sysdeps/i386/stpncpy.S: New files. * sysdeps/i386/strchr.S, sysdeps/i386/strcspn.S: New files. * sysdeps/i386/strpbrk.S, sysdeps/i386/strrchr.S: New files. * sysdeps/i386/strspn.S, sysdeps/i386/i486/strcat.S: New files. * sysdeps/i386/i486/strlen.S, sysdeps/i386/i586/strchr.S: New files. * sysdeps/i386/i586/strlen.S: New file. * sysdeps/i386/memchr.c: Removed. There is now an assembler version. * sysdeps/i386/i586/memcopy.h (WORD_COPY_BWD): Parameters did not correspond to used values. * sysdeps/unix/sysv/linux/nfs/nfs.h: New file. Simply a wrapper around a kernel header file. * sysdeps/unix/sysv/linux/Dist: Add it. * sysdeps/unix/sysv/linux/Makefile [$(subdir)=sunrpc] (headers): Likewise. * sysdeps/unix/sysv/linux/local_lim.h: Rewrite. Instead of defining ourself we use a kernel header file. * sysdeps/unix/sysv/linux/i386/sysdep.h (DO_CALL): Optimize system call handler for i586. * sysdeps/unix/sysv/linux/sys/param.h: Add copyright and clean up. Sat Oct 14 02:52:36 1995 Ulrich Drepper <drepper@ipd.info.uni-karlsruhe.de> * malloc/malloc.c (_malloc_internal): Performance fix. Move if statement out of loop. * stdio/_itoa.c, stdio/_itoa.h: Complete rewrite. Much faster implementation using GMP functions. Contributed by Torbjorn Granlund and Ulrich Drepper. * stdio/test_rdwr.c: Include <errno.h>. * sysdeps/i386/i586/Implies: New file. New highly optimized string functions for i[345]86. * sysdeps/i386/memchr.S, sysdeps/i386/memcmp.S: New files. * sysdeps/i386/stpcpy.S, sysdeps/i386/stpncpy.S: New files. * sysdeps/i386/strchr.S, sysdeps/i386/strcspn.S: New files. * sysdeps/i386/strpbrk.S, sysdeps/i386/strrchr.S: New files. * sysdeps/i386/strspn.S, sysdeps/i386/i486/strcat.S: New files. * sysdeps/i386/i486/strlen.S, sysdeps/i386/i586/strchr.S: New files. * sysdeps/i386/i586/strlen.S: New file. * sysdeps/i386/memchr.c: Removed. There is now an assembler version. * sysdeps/i386/i586/memcopy.h (WORD_COPY_BWD): Parameters did not correspond to used values. * sysdeps/unix/sysv/linux/nfs/nfs.h: New file. Simply a wrapper around a kernel header file. * sysdeps/unix/sysv/linux/Dist: Add it. * sysdeps/unix/sysv/linux/Makefile [$(subdir)=sunrpc] (headers): Likewise. * sysdeps/unix/sysv/linux/local_lim.h: Rewrite. Instead of defining ourself we use a kernel header file. * sysdeps/unix/sysv/linux/i386/sysdep.h (DO_CALL): Optimize system call handler for i586. * sysdeps/unix/sysv/linux/sys/param.h: Add copyright and clean up.
Diffstat (limited to 'sysdeps/mips/mips3')
-rw-r--r--sysdeps/mips/mips3/add_n.s119
-rw-r--r--sysdeps/mips/mips3/addmul_1.s96
-rw-r--r--sysdeps/mips/mips3/gmp-mparam.h26
-rw-r--r--sysdeps/mips/mips3/lshift.s94
-rw-r--r--sysdeps/mips/mips3/mul_1.s84
-rw-r--r--sysdeps/mips/mips3/rshift.s91
-rw-r--r--sysdeps/mips/mips3/sub_n.s119
-rw-r--r--sysdeps/mips/mips3/submul_1.s96
8 files changed, 725 insertions, 0 deletions
diff --git a/sysdeps/mips/mips3/add_n.s b/sysdeps/mips/mips3/add_n.s
new file mode 100644
index 0000000000..b5257804ad
--- /dev/null
+++ b/sysdeps/mips/mips3/add_n.s
@@ -0,0 +1,119 @@
+ # MIPS3 __mpn_add_n -- Add two limb vectors of the same length > 0 and
+ # store sum in a third limb vector.
+
+ # Copyright (C) 1995 Free Software Foundation, Inc.
+
+ # This file is part of the GNU MP Library.
+
+ # The GNU MP Library is free software; you can redistribute it and/or modify
+ # it under the terms of the GNU Library General Public License as published by
+ # the Free Software Foundation; either version 2 of the License, or (at your
+ # option) any later version.
+
+ # The GNU MP Library 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 Library General Public
+ # License for more details.
+
+ # You should have received a copy of the GNU Library General Public License
+ # along with the GNU MP Library; see the file COPYING.LIB. If not, write to
+ # the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+
+ # INPUT PARAMETERS
+ # res_ptr $4
+ # s1_ptr $5
+ # s2_ptr $6
+ # size $7
+
+ .text
+ .align 2
+ .globl __mpn_add_n
+ .ent __mpn_add_n
+__mpn_add_n:
+ .set noreorder
+ .set nomacro
+
+ ld $10,0($5)
+ ld $11,0($6)
+
+ daddiu $7,$7,-1
+ and $9,$7,4-1 # number of limbs in first loop
+ beq $9,$0,.L0 # if multiple of 4 limbs, skip first loop
+ move $2,$0
+
+ dsubu $7,$7,$9
+
+.Loop0: daddiu $9,$9,-1
+ ld $12,8($5)
+ daddu $11,$11,$2
+ ld $13,8($6)
+ sltu $8,$11,$2
+ daddu $11,$10,$11
+ sltu $2,$11,$10
+ sd $11,0($4)
+ or $2,$2,$8
+
+ daddiu $5,$5,8
+ daddiu $6,$6,8
+ move $10,$12
+ move $11,$13
+ bne $9,$0,.Loop0
+ daddiu $4,$4,8
+
+.L0: beq $7,$0,.Lend
+ nop
+
+.Loop: daddiu $7,$7,-4
+
+ ld $12,8($5)
+ daddu $11,$11,$2
+ ld $13,8($6)
+ sltu $8,$11,$2
+ daddu $11,$10,$11
+ sltu $2,$11,$10
+ sd $11,0($4)
+ or $2,$2,$8
+
+ ld $10,16($5)
+ daddu $13,$13,$2
+ ld $11,16($6)
+ sltu $8,$13,$2
+ daddu $13,$12,$13
+ sltu $2,$13,$12
+ sd $13,8($4)
+ or $2,$2,$8
+
+ ld $12,24($5)
+ daddu $11,$11,$2
+ ld $13,24($6)
+ sltu $8,$11,$2
+ daddu $11,$10,$11
+ sltu $2,$11,$10
+ sd $11,16($4)
+ or $2,$2,$8
+
+ ld $10,32($5)
+ daddu $13,$13,$2
+ ld $11,32($6)
+ sltu $8,$13,$2
+ daddu $13,$12,$13
+ sltu $2,$13,$12
+ sd $13,24($4)
+ or $2,$2,$8
+
+ daddiu $5,$5,32
+ daddiu $6,$6,32
+
+ bne $7,$0,.Loop
+ daddiu $4,$4,32
+
+.Lend: daddu $11,$11,$2
+ sltu $8,$11,$2
+ daddu $11,$10,$11
+ sltu $2,$11,$10
+ sd $11,0($4)
+ j $31
+ or $2,$2,$8
+
+ .end __mpn_add_n
diff --git a/sysdeps/mips/mips3/addmul_1.s b/sysdeps/mips/mips3/addmul_1.s
new file mode 100644
index 0000000000..7af0172614
--- /dev/null
+++ b/sysdeps/mips/mips3/addmul_1.s
@@ -0,0 +1,96 @@
+ # MIPS3 __mpn_addmul_1 -- Multiply a limb vector with a single limb and
+ # add the product to a second limb vector.
+
+ # Copyright (C) 1992, 1994, 1995 Free Software Foundation, Inc.
+
+ # This file is part of the GNU MP Library.
+
+ # The GNU MP Library is free software; you can redistribute it and/or modify
+ # it under the terms of the GNU Library General Public License as published by
+ # the Free Software Foundation; either version 2 of the License, or (at your
+ # option) any later version.
+
+ # The GNU MP Library 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 Library General Public
+ # License for more details.
+
+ # You should have received a copy of the GNU Library General Public License
+ # along with the GNU MP Library; see the file COPYING.LIB. If not, write to
+ # the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+
+ # INPUT PARAMETERS
+ # res_ptr $4
+ # s1_ptr $5
+ # size $6
+ # s2_limb $7
+
+ .text
+ .align 4
+ .globl __mpn_addmul_1
+ .ent __mpn_addmul_1
+__mpn_addmul_1:
+ .set noreorder
+ .set nomacro
+
+ # warm up phase 0
+ ld $8,0($5)
+
+ # warm up phase 1
+ daddiu $5,$5,8
+ dmultu $8,$7
+
+ daddiu $6,$6,-1
+ beq $6,$0,$LC0
+ move $2,$0 # zero cy2
+
+ daddiu $6,$6,-1
+ beq $6,$0,$LC1
+ ld $8,0($5) # load new s1 limb as early as possible
+
+Loop: ld $10,0($4)
+ mflo $3
+ mfhi $9
+ daddiu $5,$5,8
+ daddu $3,$3,$2 # add old carry limb to low product limb
+ dmultu $8,$7
+ ld $8,0($5) # load new s1 limb as early as possible
+ daddiu $6,$6,-1 # decrement loop counter
+ sltu $2,$3,$2 # carry from previous addition -> $2
+ daddu $3,$10,$3
+ sltu $10,$3,$10
+ daddu $2,$2,$10
+ sd $3,0($4)
+ daddiu $4,$4,8
+ bne $6,$0,Loop # should be "bnel"
+ daddu $2,$9,$2 # add high product limb and carry from addition
+
+ # cool down phase 1
+$LC1: ld $10,0($4)
+ mflo $3
+ mfhi $9
+ daddu $3,$3,$2
+ sltu $2,$3,$2
+ dmultu $8,$7
+ daddu $3,$10,$3
+ sltu $10,$3,$10
+ daddu $2,$2,$10
+ sd $3,0($4)
+ daddiu $4,$4,8
+ daddu $2,$9,$2 # add high product limb and carry from addition
+
+ # cool down phase 0
+$LC0: ld $10,0($4)
+ mflo $3
+ mfhi $9
+ daddu $3,$3,$2
+ sltu $2,$3,$2
+ daddu $3,$10,$3
+ sltu $10,$3,$10
+ daddu $2,$2,$10
+ sd $3,0($4)
+ j $31
+ daddu $2,$9,$2 # add high product limb and carry from addition
+
+ .end __mpn_addmul_1
diff --git a/sysdeps/mips/mips3/gmp-mparam.h b/sysdeps/mips/mips3/gmp-mparam.h
new file mode 100644
index 0000000000..a801b35d7a
--- /dev/null
+++ b/sysdeps/mips/mips3/gmp-mparam.h
@@ -0,0 +1,26 @@
+/* gmp-mparam.h -- Compiler/machine parameter header file.
+
+Copyright (C) 1991, 1993, 1994 Free Software Foundation, Inc.
+
+This file is part of the GNU MP Library.
+
+The GNU MP Library is free software; you can redistribute it and/or modify
+it under the terms of the GNU Library General Public License as published by
+the Free Software Foundation; either version 2 of the License, or (at your
+option) any later version.
+
+The GNU MP Library 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 Library General Public
+License for more details.
+
+You should have received a copy of the GNU Library General Public License
+along with the GNU MP Library; see the file COPYING.LIB. If not, write to
+the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#define BITS_PER_MP_LIMB 64
+#define BYTES_PER_MP_LIMB 8
+#define BITS_PER_LONGINT 32
+#define BITS_PER_INT 32
+#define BITS_PER_SHORTINT 16
+#define BITS_PER_CHAR 8
diff --git a/sysdeps/mips/mips3/lshift.s b/sysdeps/mips/mips3/lshift.s
new file mode 100644
index 0000000000..c05dcafffd
--- /dev/null
+++ b/sysdeps/mips/mips3/lshift.s
@@ -0,0 +1,94 @@
+ # MIPS3 __mpn_lshift --
+
+ # Copyright (C) 1995 Free Software Foundation, Inc.
+
+ # This file is part of the GNU MP Library.
+
+ # The GNU MP Library is free software; you can redistribute it and/or modify
+ # it under the terms of the GNU Library General Public License as published by
+ # the Free Software Foundation; either version 2 of the License, or (at your
+ # option) any later version.
+
+ # The GNU MP Library 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 Library General Public
+ # License for more details.
+
+ # You should have received a copy of the GNU Library General Public License
+ # along with the GNU MP Library; see the file COPYING.LIB. If not, write to
+ # the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+
+ # INPUT PARAMETERS
+ # res_ptr $4
+ # src_ptr $5
+ # size $6
+ # cnt $7
+
+ .text
+ .align 2
+ .globl __mpn_lshift
+ .ent __mpn_lshift
+__mpn_lshift:
+ .set noreorder
+ .set nomacro
+
+ dsll $2,$6,3
+ daddu $5,$5,$2 # make r5 point at end of src
+ ld $10,-8($5) # load first limb
+ dsubu $13,$0,$7
+ daddu $4,$4,$2 # make r4 point at end of res
+ daddiu $6,$6,-1
+ and $9,$6,4-1 # number of limbs in first loop
+ beq $9,$0,.L0 # if multiple of 4 limbs, skip first loop
+ dsrl $2,$10,$13 # compute function result
+
+ dsubu $6,$6,$9
+
+.Loop0: ld $3,-16($5)
+ daddiu $4,$4,-8
+ daddiu $5,$5,-8
+ daddiu $9,$9,-1
+ dsll $11,$10,$7
+ dsrl $12,$3,$13
+ move $10,$3
+ or $8,$11,$12
+ bne $9,$0,.Loop0
+ sd $8,0($4)
+
+.L0: beq $6,$0,.Lend
+ nop
+
+.Loop: ld $3,-16($5)
+ daddiu $4,$4,-32
+ daddiu $6,$6,-4
+ dsll $11,$10,$7
+ dsrl $12,$3,$13
+
+ ld $10,-24($5)
+ dsll $14,$3,$7
+ or $8,$11,$12
+ sd $8,24($4)
+ dsrl $9,$10,$13
+
+ ld $3,-32($5)
+ dsll $11,$10,$7
+ or $8,$14,$9
+ sd $8,16($4)
+ dsrl $12,$3,$13
+
+ ld $10,-40($5)
+ dsll $14,$3,$7
+ or $8,$11,$12
+ sd $8,8($4)
+ dsrl $9,$10,$13
+
+ daddiu $5,$5,-32
+ or $8,$14,$9
+ bgtz $6,.Loop
+ sd $8,0($4)
+
+.Lend: dsll $8,$10,$7
+ j $31
+ sd $8,-8($4)
+ .end __mpn_lshift
diff --git a/sysdeps/mips/mips3/mul_1.s b/sysdeps/mips/mips3/mul_1.s
new file mode 100644
index 0000000000..87954e5bc3
--- /dev/null
+++ b/sysdeps/mips/mips3/mul_1.s
@@ -0,0 +1,84 @@
+ # MIPS3 __mpn_mul_1 -- Multiply a limb vector with a single limb and
+ # store the product in a second limb vector.
+
+ # Copyright (C) 1992, 1994, 1995 Free Software Foundation, Inc.
+
+ # This file is part of the GNU MP Library.
+
+ # The GNU MP Library is free software; you can redistribute it and/or modify
+ # it under the terms of the GNU Library General Public License as published by
+ # the Free Software Foundation; either version 2 of the License, or (at your
+ # option) any later version.
+
+ # The GNU MP Library 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 Library General Public
+ # License for more details.
+
+ # You should have received a copy of the GNU Library General Public License
+ # along with the GNU MP Library; see the file COPYING.LIB. If not, write to
+ # the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+
+ # INPUT PARAMETERS
+ # res_ptr $4
+ # s1_ptr $5
+ # size $6
+ # s2_limb $7
+
+ .text
+ .align 4
+ .globl __mpn_mul_1
+ .ent __mpn_mul_1
+__mpn_mul_1:
+ .set noreorder
+ .set nomacro
+
+ # warm up phase 0
+ ld $8,0($5)
+
+ # warm up phase 1
+ daddiu $5,$5,8
+ dmultu $8,$7
+
+ daddiu $6,$6,-1
+ beq $6,$0,$LC0
+ move $2,$0 # zero cy2
+
+ daddiu $6,$6,-1
+ beq $6,$0,$LC1
+ ld $8,0($5) # load new s1 limb as early as possible
+
+Loop: mflo $10
+ mfhi $9
+ daddiu $5,$5,8
+ daddu $10,$10,$2 # add old carry limb to low product limb
+ dmultu $8,$7
+ ld $8,0($5) # load new s1 limb as early as possible
+ daddiu $6,$6,-1 # decrement loop counter
+ sltu $2,$10,$2 # carry from previous addition -> $2
+ sd $10,0($4)
+ daddiu $4,$4,8
+ bne $6,$0,Loop # should be "bnel"
+ daddu $2,$9,$2 # add high product limb and carry from addition
+
+ # cool down phase 1
+$LC1: mflo $10
+ mfhi $9
+ daddu $10,$10,$2
+ sltu $2,$10,$2
+ dmultu $8,$7
+ sd $10,0($4)
+ daddiu $4,$4,8
+ daddu $2,$9,$2 # add high product limb and carry from addition
+
+ # cool down phase 0
+$LC0: mflo $10
+ mfhi $9
+ daddu $10,$10,$2
+ sltu $2,$10,$2
+ sd $10,0($4)
+ j $31
+ daddu $2,$9,$2 # add high product limb and carry from addition
+
+ .end __mpn_mul_1
diff --git a/sysdeps/mips/mips3/rshift.s b/sysdeps/mips/mips3/rshift.s
new file mode 100644
index 0000000000..e0e2ca2c5f
--- /dev/null
+++ b/sysdeps/mips/mips3/rshift.s
@@ -0,0 +1,91 @@
+ # MIPS3 __mpn_rshift --
+
+ # Copyright (C) 1995 Free Software Foundation, Inc.
+
+ # This file is part of the GNU MP Library.
+
+ # The GNU MP Library is free software; you can redistribute it and/or modify
+ # it under the terms of the GNU Library General Public License as published by
+ # the Free Software Foundation; either version 2 of the License, or (at your
+ # option) any later version.
+
+ # The GNU MP Library 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 Library General Public
+ # License for more details.
+
+ # You should have received a copy of the GNU Library General Public License
+ # along with the GNU MP Library; see the file COPYING.LIB. If not, write to
+ # the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+
+ # INPUT PARAMETERS
+ # res_ptr $4
+ # src_ptr $5
+ # size $6
+ # cnt $7
+
+ .text
+ .align 2
+ .globl __mpn_rshift
+ .ent __mpn_rshift
+__mpn_rshift:
+ .set noreorder
+ .set nomacro
+
+ ld $10,0($5) # load first limb
+ dsubu $13,$0,$7
+ daddiu $6,$6,-1
+ and $9,$6,4-1 # number of limbs in first loop
+ beq $9,$0,.L0 # if multiple of 4 limbs, skip first loop
+ dsll $2,$10,$13 # compute function result
+
+ dsubu $6,$6,$9
+
+.Loop0: ld $3,8($5)
+ daddiu $4,$4,8
+ daddiu $5,$5,8
+ daddiu $9,$9,-1
+ dsrl $11,$10,$7
+ dsll $12,$3,$13
+ move $10,$3
+ or $8,$11,$12
+ bne $9,$0,.Loop0
+ sd $8,-8($4)
+
+.L0: beq $6,$0,.Lend
+ nop
+
+.Loop: ld $3,8($5)
+ daddiu $4,$4,32
+ daddiu $6,$6,-4
+ dsrl $11,$10,$7
+ dsll $12,$3,$13
+
+ ld $10,16($5)
+ dsrl $14,$3,$7
+ or $8,$11,$12
+ sd $8,-32($4)
+ dsll $9,$10,$13
+
+ ld $3,24($5)
+ dsrl $11,$10,$7
+ or $8,$14,$9
+ sd $8,-24($4)
+ dsll $12,$3,$13
+
+ ld $10,32($5)
+ dsrl $14,$3,$7
+ or $8,$11,$12
+ sd $8,-16($4)
+ dsll $9,$10,$13
+
+ daddiu $5,$5,32
+ or $8,$14,$9
+ bgtz $6,.Loop
+ sd $8,-8($4)
+
+.Lend: dsrl $8,$10,$7
+ j $31
+ sd $8,0($4)
+ .end __mpn_rshift
diff --git a/sysdeps/mips/mips3/sub_n.s b/sysdeps/mips/mips3/sub_n.s
new file mode 100644
index 0000000000..9a45ffde5a
--- /dev/null
+++ b/sysdeps/mips/mips3/sub_n.s
@@ -0,0 +1,119 @@
+ # MIPS3 __mpn_sub_n -- Subtract two limb vectors of the same length > 0 and
+ # store difference in a third limb vector.
+
+ # Copyright (C) 1995 Free Software Foundation, Inc.
+
+ # This file is part of the GNU MP Library.
+
+ # The GNU MP Library is free software; you can redistribute it and/or modify
+ # it under the terms of the GNU Library General Public License as published by
+ # the Free Software Foundation; either version 2 of the License, or (at your
+ # option) any later version.
+
+ # The GNU MP Library 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 Library General Public
+ # License for more details.
+
+ # You should have received a copy of the GNU Library General Public License
+ # along with the GNU MP Library; see the file COPYING.LIB. If not, write to
+ # the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+
+ # INPUT PARAMETERS
+ # res_ptr $4
+ # s1_ptr $5
+ # s2_ptr $6
+ # size $7
+
+ .text
+ .align 2
+ .globl __mpn_sub_n
+ .ent __mpn_sub_n
+__mpn_sub_n:
+ .set noreorder
+ .set nomacro
+
+ ld $10,0($5)
+ ld $11,0($6)
+
+ daddiu $7,$7,-1
+ and $9,$7,4-1 # number of limbs in first loop
+ beq $9,$0,.L0 # if multiple of 4 limbs, skip first loop
+ move $2,$0
+
+ dsubu $7,$7,$9
+
+.Loop0: daddiu $9,$9,-1
+ ld $12,8($5)
+ daddu $11,$11,$2
+ ld $13,8($6)
+ sltu $8,$11,$2
+ dsubu $11,$10,$11
+ sltu $2,$10,$11
+ sd $11,0($4)
+ or $2,$2,$8
+
+ daddiu $5,$5,8
+ daddiu $6,$6,8
+ move $10,$12
+ move $11,$13
+ bne $9,$0,.Loop0
+ daddiu $4,$4,8
+
+.L0: beq $7,$0,.Lend
+ nop
+
+.Loop: daddiu $7,$7,-4
+
+ ld $12,8($5)
+ daddu $11,$11,$2
+ ld $13,8($6)
+ sltu $8,$11,$2
+ dsubu $11,$10,$11
+ sltu $2,$10,$11
+ sd $11,0($4)
+ or $2,$2,$8
+
+ ld $10,16($5)
+ daddu $13,$13,$2
+ ld $11,16($6)
+ sltu $8,$13,$2
+ dsubu $13,$12,$13
+ sltu $2,$12,$13
+ sd $13,8($4)
+ or $2,$2,$8
+
+ ld $12,24($5)
+ daddu $11,$11,$2
+ ld $13,24($6)
+ sltu $8,$11,$2
+ dsubu $11,$10,$11
+ sltu $2,$10,$11
+ sd $11,16($4)
+ or $2,$2,$8
+
+ ld $10,32($5)
+ daddu $13,$13,$2
+ ld $11,32($6)
+ sltu $8,$13,$2
+ dsubu $13,$12,$13
+ sltu $2,$12,$13
+ sd $13,24($4)
+ or $2,$2,$8
+
+ daddiu $5,$5,32
+ daddiu $6,$6,32
+
+ bne $7,$0,.Loop
+ daddiu $4,$4,32
+
+.Lend: daddu $11,$11,$2
+ sltu $8,$11,$2
+ dsubu $11,$10,$11
+ sltu $2,$10,$11
+ sd $11,0($4)
+ j $31
+ or $2,$2,$8
+
+ .end __mpn_sub_n
diff --git a/sysdeps/mips/mips3/submul_1.s b/sysdeps/mips/mips3/submul_1.s
new file mode 100644
index 0000000000..f28c6a5167
--- /dev/null
+++ b/sysdeps/mips/mips3/submul_1.s
@@ -0,0 +1,96 @@
+ # MIPS3 __mpn_submul_1 -- Multiply a limb vector with a single limb and
+ # subtract the product from a second limb vector.
+
+ # Copyright (C) 1992, 1994, 1995 Free Software Foundation, Inc.
+
+ # This file is part of the GNU MP Library.
+
+ # The GNU MP Library is free software; you can redistribute it and/or modify
+ # it under the terms of the GNU Library General Public License as published by
+ # the Free Software Foundation; either version 2 of the License, or (at your
+ # option) any later version.
+
+ # The GNU MP Library 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 Library General Public
+ # License for more details.
+
+ # You should have received a copy of the GNU Library General Public License
+ # along with the GNU MP Library; see the file COPYING.LIB. If not, write to
+ # the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+
+ # INPUT PARAMETERS
+ # res_ptr $4
+ # s1_ptr $5
+ # size $6
+ # s2_limb $7
+
+ .text
+ .align 4
+ .globl __mpn_submul_1
+ .ent __mpn_submul_1
+__mpn_submul_1:
+ .set noreorder
+ .set nomacro
+
+ # warm up phase 0
+ ld $8,0($5)
+
+ # warm up phase 1
+ daddiu $5,$5,8
+ dmultu $8,$7
+
+ daddiu $6,$6,-1
+ beq $6,$0,$LC0
+ move $2,$0 # zero cy2
+
+ daddiu $6,$6,-1
+ beq $6,$0,$LC1
+ ld $8,0($5) # load new s1 limb as early as possible
+
+Loop: ld $10,0($4)
+ mflo $3
+ mfhi $9
+ daddiu $5,$5,8
+ daddu $3,$3,$2 # add old carry limb to low product limb
+ dmultu $8,$7
+ ld $8,0($5) # load new s1 limb as early as possible
+ daddiu $6,$6,-1 # decrement loop counter
+ sltu $2,$3,$2 # carry from previous addition -> $2
+ dsubu $3,$10,$3
+ sgtu $10,$3,$10
+ daddu $2,$2,$10
+ sd $3,0($4)
+ daddiu $4,$4,8
+ bne $6,$0,Loop # should be "bnel"
+ daddu $2,$9,$2 # add high product limb and carry from addition
+
+ # cool down phase 1
+$LC1: ld $10,0($4)
+ mflo $3
+ mfhi $9
+ daddu $3,$3,$2
+ sltu $2,$3,$2
+ dmultu $8,$7
+ dsubu $3,$10,$3
+ sgtu $10,$3,$10
+ daddu $2,$2,$10
+ sd $3,0($4)
+ daddiu $4,$4,8
+ daddu $2,$9,$2 # add high product limb and carry from addition
+
+ # cool down phase 0
+$LC0: ld $10,0($4)
+ mflo $3
+ mfhi $9
+ daddu $3,$3,$2
+ sltu $2,$3,$2
+ dsubu $3,$10,$3
+ sgtu $10,$3,$10
+ daddu $2,$2,$10
+ sd $3,0($4)
+ j $31
+ daddu $2,$9,$2 # add high product limb and carry from addition
+
+ .end __mpn_submul_1