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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/i960
parent5d82cf5c55f56ae10d3b0a205d1fcc7de1cf56a0 (diff)
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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/i960')
-rw-r--r--sysdeps/i960/add_n.s21
-rw-r--r--sysdeps/i960/addmul_1.s26
-rw-r--r--sysdeps/i960/mul_1.s23
-rw-r--r--sysdeps/i960/sub_n.s21
4 files changed, 91 insertions, 0 deletions
diff --git a/sysdeps/i960/add_n.s b/sysdeps/i960/add_n.s
new file mode 100644
index 0000000..6031f6d
--- /dev/null
+++ b/sysdeps/i960/add_n.s
@@ -0,0 +1,21 @@
+.text
+ .align 4
+ .globl ___mpn_add_n
+___mpn_add_n:
+ mov 0,g6 # clear carry-save register
+ cmpo 1,0 # clear cy
+
+Loop: subo 1,g3,g3 # update loop counter
+ ld (g1),g5 # load from s1_ptr
+ addo 4,g1,g1 # s1_ptr++
+ ld (g2),g4 # load from s2_ptr
+ addo 4,g2,g2 # s2_ptr++
+ cmpo g6,1 # restore cy from g6, relies on cy being 0
+ addc g4,g5,g4 # main add
+ subc 0,0,g6 # save cy in g6
+ st g4,(g0) # store result to res_ptr
+ addo 4,g0,g0 # res_ptr++
+ cmpobne 0,g3,Loop # when branch is taken, clears C bit
+
+ mov g6,g0
+ ret
diff --git a/sysdeps/i960/addmul_1.s b/sysdeps/i960/addmul_1.s
new file mode 100644
index 0000000..1a3de95
--- /dev/null
+++ b/sysdeps/i960/addmul_1.s
@@ -0,0 +1,26 @@
+.text
+ .align 4
+ .globl ___mpn_mul_1
+___mpn_mul_1:
+ subo g2,0,g2
+ shlo 2,g2,g4
+ subo g4,g1,g1
+ subo g4,g0,g13
+ mov 0,g0
+
+ cmpo 1,0 # clear C bit on AC.cc
+
+Loop: ld (g1)[g2*4],g5
+ emul g3,g5,g6
+ ld (g13)[g2*4],g5
+
+ addc g0,g6,g6 # relies on that C bit is clear
+ addc 0,g7,g7
+ addc g5,g6,g6 # relies on that C bit is clear
+ st g6,(g13)[g2*4]
+ addc 0,g7,g0
+
+ addo g2,1,g2
+ cmpobne 0,g2,Loop # when branch is taken, clears C bit
+
+ ret
diff --git a/sysdeps/i960/mul_1.s b/sysdeps/i960/mul_1.s
new file mode 100644
index 0000000..e75ea42
--- /dev/null
+++ b/sysdeps/i960/mul_1.s
@@ -0,0 +1,23 @@
+.text
+ .align 4
+ .globl ___mpn_mul_1
+___mpn_mul_1:
+ subo g2,0,g2
+ shlo 2,g2,g4
+ subo g4,g1,g1
+ subo g4,g0,g13
+ mov 0,g0
+
+ cmpo 1,0 # clear C bit on AC.cc
+
+Loop: ld (g1)[g2*4],g5
+ emul g3,g5,g6
+
+ addc g0,g6,g6 # relies on that C bit is clear
+ st g6,(g13)[g2*4]
+ addc 0,g7,g0
+
+ addo g2,1,g2
+ cmpobne 0,g2,Loop # when branch is taken, clears C bit
+
+ ret
diff --git a/sysdeps/i960/sub_n.s b/sysdeps/i960/sub_n.s
new file mode 100644
index 0000000..13ebbfa
--- /dev/null
+++ b/sysdeps/i960/sub_n.s
@@ -0,0 +1,21 @@
+.text
+ .align 4
+ .globl ___mpn_sub_n
+___mpn_sub_n:
+ mov 1,g6 # set carry-save register
+ cmpo 1,0 # clear cy
+
+Loop: subo 1,g3,g3 # update loop counter
+ ld (g1),g5 # load from s1_ptr
+ addo 4,g1,g1 # s1_ptr++
+ ld (g2),g4 # load from s2_ptr
+ addo 4,g2,g2 # s2_ptr++
+ cmpo g6,1 # restore cy from g6, relies on cy being 0
+ subc g4,g5,g4 # main subtract
+ subc 0,0,g6 # save cy in g6
+ st g4,(g0) # store result to res_ptr
+ addo 4,g0,g0 # res_ptr++
+ cmpobne 0,g3,Loop # when branch is taken, cy will be 0
+
+ mov g6,g0
+ ret