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authorUlrich Drepper <drepper@redhat.com>1997-08-24 10:55:18 +0000
committerUlrich Drepper <drepper@redhat.com>1997-08-24 10:55:18 +0000
commitf41c80910d631bacdaf39ec6d11272db79c59d38 (patch)
tree26b93c7b36e05eb08892aa730788c8f772efe2e3 /sysdeps/sparc/sparc32/sub_n.S
parent40a55d2054ef9d9085c4e6b0157c5d30608736fc (diff)
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Update.
1997-08-24 12:24 Ulrich Drepper <drepper@cygnus.com> * configure.in (INSTALL): Quote `$'. * libc.map: Add __xpg_basename. * csu/Makefile (initfini.s): Disable optimization. * elf/dl-deps.c: Implement handling of DL_FILTER. * elf/dl-load.c (_dl_init_paths): Add error check. * intl/finddomain.c (_nl_find_domain): Correct comment. * intl/localealias.c: Include <bits/libc-lock.h> not <libc-lock.h>. * libio/stdio.h: Make {,v}snprintf available if __USE_BSD. Change extern inline functions to work correctly in C++. * locale/iso-4217.def: Update for more recent ISO 4217 version. * locale/loadlocale.c (_nl_load_locale): Add cast. * manual/message.texi: Finish gettext section. * posix/getopt_init.c: Don't use relative #include path. (__getopt_clean_environment): Change function to take pointer to environment as argument. Optimize generation of test string a bit. * sysdeps/unix/sysv/linux/init-first.c: Call __getopt_clean_environment with additional argument. * poisx/glob.c: Add prototype for next_brace_sub. * sysdeps/generic/dl-sysdep.c: Recognize AT_BASE value on auxiliary vector. * sysdeps/i386/dl-machine.h (elf_machine_load_address): Rewrite to not generate relocation entry. Suggested by Richard Henderson. (ELF_MACHINE_BEFORE_RTLD_RELOC): Removed. (elf_machine_runtime_setup): Add .aligns. * sysdeps/i386/fpu/fraiseexcpt.c: Add volatile to asms. * sysdeps/i386/fpu/bits/mathinline.h: Partially undo change of 1997-08-14 03:14. gcc 2.7.2* is really broken in some aspects. * sysdeps/standalone/i386/i386.h: Clean up asm statements a bit. * sysdeps/standalone/i960/i960ca.h: Likewise. 1997-08-22 19:04 Richard Henderson <rth@cygnus.com> * elf/rtld.c (_dl_start): Init _dl_rtld_map.l_opencount due to undocumented test addition in _dl_map_object. Support ET_EXEC versions of ld.so, for debugging at least: * elf/dl-load.c (_dl_map_object): Add_name_to_object could get called despite the DT_SONAME != NULL test, segfaulting. Simplify the code here as well. * elf/dl-lookup.c (do_lookup): Skip objects with no symtab. (_dl_setup_hash): Likewise for hash tables. * elf/dl-version.c (_dl_check_map_versions): Likewise for strtabs. * elf/rtld.c (_dl_start): Likewise for rpath. (_dl_rtld_libname2): New variable. (dl_main): Use it to add an soname for ourselves when we don't have one of our own. Base it on the target's .interp. (dl_main): Again, skip printing of objects that don't have strtabs. Sparc 32 merge: * elf/dl-runtime.c (ELF_FIXUP_RETURN_VALUE): Provide default value. (fixup): Simplify code. Use ELF_FIXUP_RETURN_VALUE. (profile_fixup): Likewise, though this still needs fixing for Sparc32 and PPC. * sysdeps/powerpc/dl-machine.h: Transmute ELF_FIXUP_RETURNS_ADDRESS to ELF_FIXUP_RETURN_VALUE. * sysdeps/sparc/sparc32/dl-machine.h: Implement lazy relocation. Fix up _dl_start_user to handle _dl_skip_args properly. Use _dl_hwcap to determine if "flush" is available/needed. * sysdeps/sparc/configure.in: Remove. It doesn't actually do anything anymore, and what it did do is done somewhere else. * sysdeps/sparc/configure: Likewise. * sysdeps/sparc/fpu/bits/mathdef.h (FP_ILOGB0, FP_ILOGBNAN): New. * sysdeps/sparc/fpu/fraiseexcpt.c: Rearrange for smaller code. * sysdeps/sparc/sparc32/Makefile: Fix sparc->sparc/sparc32 bits in divrem expansions. * sysdeps/unix/sysv/linux/sparc/sparc32/sysdep.h (END, LOC): New definitions for assembly syntax differences. * sysdeps/sparc/sparc32/__longjmp.S: %g6,%g7 are reserved to the "system". Use %g2,%g3 instead. Use new local label macro. * sysdeps/sparc/sparc32/add_n.S: Use <sysdep.h> and ENTRY, END, and LOC for proper assembly headers/footers. * sysdeps/sparc/sparc32/addmul_1.S: Likewise. * sysdeps/sparc/sparc32/alloca.S: Likewise. * sysdeps/sparc/sparc32/dotmul.S: Likewise. * sysdeps/sparc/sparc32/lshift.S: Likewise. * sysdeps/sparc/sparc32/mul_1.S: Likewise. * sysdeps/sparc/sparc32/rshift.S: Likewise. * sysdeps/sparc/sparc32/sparcv8/addmul_1.S: Likewise. * sysdeps/sparc/sparc32/sparcv8/mul_1.S: Likewise. * sysdeps/sparc/sparc32/sparcv8/submul_1.S: Likewise. * sysdeps/sparc/sparc32/sparcv8/udiv_qrnnd.S: Likewise. * sysdeps/sparc/sparc32/sub_n.S: Likewise. * sysdeps/sparc/sparc32/submul_1.S: Likewise. * sysdeps/sparc/sparc32/udiv_qrnnd.S: Likewise. * sysdeps/sparc/sparc32/umul.S: Likewise. * sysdeps/sparc/sparc32/divrem.m4: Likewise. * sysdeps/sparc/sparc32/rem.S: Regenerate. * sysdeps/sparc/sparc32/sdiv.S: Regenerate. * sysdeps/sparc/sparc32/udiv.S: Regenerate. * sysdeps/sparc/sparc32/urem.S: Regenerate. * sysdeps/sparc/sparc32/sparcv8/dotmul.S: New file. * sysdeps/sparc/sparc32/sparcv8/rem.S: New file. * sysdeps/sparc/sparc32/sparcv8/sdiv.S: New file. * sysdeps/sparc/sparc32/sparcv8/udiv.S: New file. * sysdeps/sparc/sparc32/sparcv8/umul.S: New file. * sysdeps/sparc/sparc32/sparcv8/urem.S: New file. * sysdeps/sparc/sparc32/bsd-_setjmp.S: Dike out. * sysdeps/sparc/sparc32/bsd-setjmp.S: Likewise. * sysdeps/sparc/sparc32/setjmp.S: Add _setjmp and setjmp entry points. * sysdeps/unix/sysv/linux/sparc/sparc32/__sigtrampoline.S: Clean up PIC code. * sysdeps/sparc/sparc32/elf/start.S: New file, slightly modified from the sparc64 version. * sysdeps/sparc/sparc32/elf/start.c: Removed. * sysdeps/unix/sysv/linux/sparc/sparc32/init-first.h: Rewrite in assembly based on the sparc64 version. * sysdeps/sparc/sparc32/fpu/bits/fenv.h: Duh. Use proper syntax for manipulating %fsr. * sysdeps/sparc/sparc32/fpu/fpu_control.h: Make IEEE conformance be the default. * elf/elf.h (HWCAP_SPARC_*): New definitions. * elf/rtld.c (_dl_hwcap): New variable. * sysdeps/generic/dl-sysdep.c (_dl_sysdep_start): Record AT_HWCAP. * sysdeps/unix/sysv/linux/sparc/sparc32/getpagesize.c: New file. Attempt to get hold of the page size based on what we might have been told at startup time in _dl_pagesize. This will be obsolete when I finish the kernel hooks for a proper sysconf(), stay tuned. Sparc 64 merge: * sysdeps/sparc/sparc64/dl-machine.h (ELF_FIXUP_RETURN_VALUE): New. Figure out the right thing to return based on the .plt format. * sysdeps/sparc/sparc64/fpu/fpu_control.h: Update comment. * sysdeps/unix/sysv/linux/sparc/sparc64/bits/types.h (__dev_t): Should have been 64-bits wide. * sysdeps/unix/sysv/linux/sparc/sparc64/init-first.h: sll->sllx, optimize for branch delay slot usage. 1997-08-22 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * csu/Makefile ($(objpfx)crt%.o): Fix a missing *.so -> *.os change. 1997-08-20 Andreas Jaeger <aj@arthur.rhein-neckar.de> * math/libm-test.c (identities): Change epsilon. * sysdeps/i386/fpu/bits/mathinline.h: Correct arguments to fabs, fabsf, fabsl, __fabsl. * sysdeps/libm-i387/e_remainderl.S: Pop extra value from FPU stack. * sysdeps/libm-ieee754/s_csinhl.c: Include <fenv.h>.
Diffstat (limited to 'sysdeps/sparc/sparc32/sub_n.S')
-rw-r--r--sysdeps/sparc/sparc32/sub_n.S406
1 files changed, 212 insertions, 194 deletions
diff --git a/sysdeps/sparc/sparc32/sub_n.S b/sysdeps/sparc/sparc32/sub_n.S
index b7a11958e2..74400600bd 100644
--- a/sysdeps/sparc/sparc32/sub_n.S
+++ b/sysdeps/sparc/sparc32/sub_n.S
@@ -1,20 +1,20 @@
! SPARC __mpn_sub_n -- Subtract two limb vectors of the same length > 0 and
! store difference in a third limb vector.
-
+!
! Copyright (C) 1995, 1996 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., 59 Temple Place - Suite 330, Boston,
@@ -22,290 +22,308 @@
! INPUT PARAMETERS
-#define res_ptr %o0
-#define s1_ptr %o1
-#define s2_ptr %o2
-#define size %o3
+#define RES_PTR %o0
+#define S1_PTR %o1
+#define S2_PTR %o2
+#define SIZE %o3
-#include "sysdep.h"
+#include <sysdep.h>
- .text
- .align 4
- .global C_SYMBOL_NAME(__mpn_sub_n)
-C_SYMBOL_NAME(__mpn_sub_n):
- xor s2_ptr,res_ptr,%g1
+ENTRY(__mpn_sub_n)
+ xor S2_PTR,RES_PTR,%g1
andcc %g1,4,%g0
- bne L1 ! branch if alignment differs
+ bne LOC(1) ! branch if alignment differs
nop
! ** V1a **
- andcc res_ptr,4,%g0 ! res_ptr unaligned? Side effect: cy=0
- be L_v1 ! if no, branch
+ andcc RES_PTR,4,%g0 ! RES_PTR unaligned? Side effect: cy=0
+ be LOC(v1) ! if no, branch
nop
-/* Add least significant limb separately to align res_ptr and s2_ptr */
- ld [s1_ptr],%g4
- add s1_ptr,4,s1_ptr
- ld [s2_ptr],%g2
- add s2_ptr,4,s2_ptr
- add size,-1,size
+/* Add least significant limb separately to align RES_PTR and S2_PTR */
+ ld [S1_PTR],%g4
+ add S1_PTR,4,S1_PTR
+ ld [S2_PTR],%g2
+ add S2_PTR,4,S2_PTR
+ add SIZE,-1,SIZE
subcc %g4,%g2,%o4
- st %o4,[res_ptr]
- add res_ptr,4,res_ptr
-L_v1: addx %g0,%g0,%o4 ! save cy in register
- cmp size,2 ! if size < 2 ...
- bl Lend2 ! ... branch to tail code
+ st %o4,[RES_PTR]
+ add RES_PTR,4,RES_PTR
+LOC(v1):
+ addx %g0,%g0,%o4 ! save cy in register
+ cmp SIZE,2 ! if SIZE < 2 ...
+ bl LOC(end2) ! ... branch to tail code
subcc %g0,%o4,%g0 ! restore cy
- ld [s1_ptr+0],%g4
- addcc size,-10,size
- ld [s1_ptr+4],%g1
- ldd [s2_ptr+0],%g2
- blt Lfin1
+ ld [S1_PTR+0],%g4
+ addcc SIZE,-10,SIZE
+ ld [S1_PTR+4],%g1
+ ldd [S2_PTR+0],%g2
+ blt LOC(fin1)
subcc %g0,%o4,%g0 ! restore cy
/* Add blocks of 8 limbs until less than 8 limbs remain */
-Loop1: subxcc %g4,%g2,%o4
- ld [s1_ptr+8],%g4
+LOC(loop1):
+ subxcc %g4,%g2,%o4
+ ld [S1_PTR+8],%g4
subxcc %g1,%g3,%o5
- ld [s1_ptr+12],%g1
- ldd [s2_ptr+8],%g2
- std %o4,[res_ptr+0]
+ ld [S1_PTR+12],%g1
+ ldd [S2_PTR+8],%g2
+ std %o4,[RES_PTR+0]
subxcc %g4,%g2,%o4
- ld [s1_ptr+16],%g4
+ ld [S1_PTR+16],%g4
subxcc %g1,%g3,%o5
- ld [s1_ptr+20],%g1
- ldd [s2_ptr+16],%g2
- std %o4,[res_ptr+8]
+ ld [S1_PTR+20],%g1
+ ldd [S2_PTR+16],%g2
+ std %o4,[RES_PTR+8]
subxcc %g4,%g2,%o4
- ld [s1_ptr+24],%g4
+ ld [S1_PTR+24],%g4
subxcc %g1,%g3,%o5
- ld [s1_ptr+28],%g1
- ldd [s2_ptr+24],%g2
- std %o4,[res_ptr+16]
+ ld [S1_PTR+28],%g1
+ ldd [S2_PTR+24],%g2
+ std %o4,[RES_PTR+16]
subxcc %g4,%g2,%o4
- ld [s1_ptr+32],%g4
+ ld [S1_PTR+32],%g4
subxcc %g1,%g3,%o5
- ld [s1_ptr+36],%g1
- ldd [s2_ptr+32],%g2
- std %o4,[res_ptr+24]
+ ld [S1_PTR+36],%g1
+ ldd [S2_PTR+32],%g2
+ std %o4,[RES_PTR+24]
addx %g0,%g0,%o4 ! save cy in register
- addcc size,-8,size
- add s1_ptr,32,s1_ptr
- add s2_ptr,32,s2_ptr
- add res_ptr,32,res_ptr
- bge Loop1
+ addcc SIZE,-8,SIZE
+ add S1_PTR,32,S1_PTR
+ add S2_PTR,32,S2_PTR
+ add RES_PTR,32,RES_PTR
+ bge LOC(loop1)
subcc %g0,%o4,%g0 ! restore cy
-Lfin1: addcc size,8-2,size
- blt Lend1
+LOC(fin1):
+ addcc SIZE,8-2,SIZE
+ blt LOC(end1)
subcc %g0,%o4,%g0 ! restore cy
/* Add blocks of 2 limbs until less than 2 limbs remain */
-Loope1: subxcc %g4,%g2,%o4
- ld [s1_ptr+8],%g4
+LOC(loope1):
+ subxcc %g4,%g2,%o4
+ ld [S1_PTR+8],%g4
subxcc %g1,%g3,%o5
- ld [s1_ptr+12],%g1
- ldd [s2_ptr+8],%g2
- std %o4,[res_ptr+0]
+ ld [S1_PTR+12],%g1
+ ldd [S2_PTR+8],%g2
+ std %o4,[RES_PTR+0]
addx %g0,%g0,%o4 ! save cy in register
- addcc size,-2,size
- add s1_ptr,8,s1_ptr
- add s2_ptr,8,s2_ptr
- add res_ptr,8,res_ptr
- bge Loope1
+ addcc SIZE,-2,SIZE
+ add S1_PTR,8,S1_PTR
+ add S2_PTR,8,S2_PTR
+ add RES_PTR,8,RES_PTR
+ bge LOC(loope1)
subcc %g0,%o4,%g0 ! restore cy
-Lend1: subxcc %g4,%g2,%o4
+LOC(end1):
+ subxcc %g4,%g2,%o4
subxcc %g1,%g3,%o5
- std %o4,[res_ptr+0]
+ std %o4,[RES_PTR+0]
addx %g0,%g0,%o4 ! save cy in register
- andcc size,1,%g0
- be Lret1
+ andcc SIZE,1,%g0
+ be LOC(ret1)
subcc %g0,%o4,%g0 ! restore cy
/* Add last limb */
- ld [s1_ptr+8],%g4
- ld [s2_ptr+8],%g2
+ ld [S1_PTR+8],%g4
+ ld [S2_PTR+8],%g2
subxcc %g4,%g2,%o4
- st %o4,[res_ptr+8]
+ st %o4,[RES_PTR+8]
-Lret1: retl
+LOC(ret1):
+ retl
addx %g0,%g0,%o0 ! return carry-out from most sign. limb
-L1: xor s1_ptr,res_ptr,%g1
+LOC(1): xor S1_PTR,RES_PTR,%g1
andcc %g1,4,%g0
- bne L2
+ bne LOC(2)
nop
! ** V1b **
- andcc res_ptr,4,%g0 ! res_ptr unaligned? Side effect: cy=0
- be L_v1b ! if no, branch
+ andcc RES_PTR,4,%g0 ! RES_PTR unaligned? Side effect: cy=0
+ be LOC(v1b) ! if no, branch
nop
-/* Add least significant limb separately to align res_ptr and s1_ptr */
- ld [s2_ptr],%g4
- add s2_ptr,4,s2_ptr
- ld [s1_ptr],%g2
- add s1_ptr,4,s1_ptr
- add size,-1,size
+/* Add least significant limb separately to align RES_PTR and S1_PTR */
+ ld [S2_PTR],%g4
+ add S2_PTR,4,S2_PTR
+ ld [S1_PTR],%g2
+ add S1_PTR,4,S1_PTR
+ add SIZE,-1,SIZE
subcc %g2,%g4,%o4
- st %o4,[res_ptr]
- add res_ptr,4,res_ptr
-L_v1b: addx %g0,%g0,%o4 ! save cy in register
- cmp size,2 ! if size < 2 ...
- bl Lend2 ! ... branch to tail code
+ st %o4,[RES_PTR]
+ add RES_PTR,4,RES_PTR
+LOC(v1b):
+ addx %g0,%g0,%o4 ! save cy in register
+ cmp SIZE,2 ! if SIZE < 2 ...
+ bl LOC(end2) ! ... branch to tail code
subcc %g0,%o4,%g0 ! restore cy
- ld [s2_ptr+0],%g4
- addcc size,-10,size
- ld [s2_ptr+4],%g1
- ldd [s1_ptr+0],%g2
- blt Lfin1b
+ ld [S2_PTR+0],%g4
+ addcc SIZE,-10,SIZE
+ ld [S2_PTR+4],%g1
+ ldd [S1_PTR+0],%g2
+ blt LOC(fin1b)
subcc %g0,%o4,%g0 ! restore cy
/* Add blocks of 8 limbs until less than 8 limbs remain */
-Loop1b: subxcc %g2,%g4,%o4
- ld [s2_ptr+8],%g4
+LOC(loop1b):
+ subxcc %g2,%g4,%o4
+ ld [S2_PTR+8],%g4
subxcc %g3,%g1,%o5
- ld [s2_ptr+12],%g1
- ldd [s1_ptr+8],%g2
- std %o4,[res_ptr+0]
+ ld [S2_PTR+12],%g1
+ ldd [S1_PTR+8],%g2
+ std %o4,[RES_PTR+0]
subxcc %g2,%g4,%o4
- ld [s2_ptr+16],%g4
+ ld [S2_PTR+16],%g4
subxcc %g3,%g1,%o5
- ld [s2_ptr+20],%g1
- ldd [s1_ptr+16],%g2
- std %o4,[res_ptr+8]
+ ld [S2_PTR+20],%g1
+ ldd [S1_PTR+16],%g2
+ std %o4,[RES_PTR+8]
subxcc %g2,%g4,%o4
- ld [s2_ptr+24],%g4
+ ld [S2_PTR+24],%g4
subxcc %g3,%g1,%o5
- ld [s2_ptr+28],%g1
- ldd [s1_ptr+24],%g2
- std %o4,[res_ptr+16]
+ ld [S2_PTR+28],%g1
+ ldd [S1_PTR+24],%g2
+ std %o4,[RES_PTR+16]
subxcc %g2,%g4,%o4
- ld [s2_ptr+32],%g4
+ ld [S2_PTR+32],%g4
subxcc %g3,%g1,%o5
- ld [s2_ptr+36],%g1
- ldd [s1_ptr+32],%g2
- std %o4,[res_ptr+24]
+ ld [S2_PTR+36],%g1
+ ldd [S1_PTR+32],%g2
+ std %o4,[RES_PTR+24]
addx %g0,%g0,%o4 ! save cy in register
- addcc size,-8,size
- add s1_ptr,32,s1_ptr
- add s2_ptr,32,s2_ptr
- add res_ptr,32,res_ptr
- bge Loop1b
+ addcc SIZE,-8,SIZE
+ add S1_PTR,32,S1_PTR
+ add S2_PTR,32,S2_PTR
+ add RES_PTR,32,RES_PTR
+ bge LOC(loop1b)
subcc %g0,%o4,%g0 ! restore cy
-Lfin1b: addcc size,8-2,size
- blt Lend1b
+LOC(fin1b):
+ addcc SIZE,8-2,SIZE
+ blt LOC(end1b)
subcc %g0,%o4,%g0 ! restore cy
/* Add blocks of 2 limbs until less than 2 limbs remain */
-Loope1b:subxcc %g2,%g4,%o4
- ld [s2_ptr+8],%g4
+LOC(loope1b):
+ subxcc %g2,%g4,%o4
+ ld [S2_PTR+8],%g4
subxcc %g3,%g1,%o5
- ld [s2_ptr+12],%g1
- ldd [s1_ptr+8],%g2
- std %o4,[res_ptr+0]
+ ld [S2_PTR+12],%g1
+ ldd [S1_PTR+8],%g2
+ std %o4,[RES_PTR+0]
addx %g0,%g0,%o4 ! save cy in register
- addcc size,-2,size
- add s1_ptr,8,s1_ptr
- add s2_ptr,8,s2_ptr
- add res_ptr,8,res_ptr
- bge Loope1b
+ addcc SIZE,-2,SIZE
+ add S1_PTR,8,S1_PTR
+ add S2_PTR,8,S2_PTR
+ add RES_PTR,8,RES_PTR
+ bge LOC(loope1b)
subcc %g0,%o4,%g0 ! restore cy
-Lend1b: subxcc %g2,%g4,%o4
+LOC(end1b):
+ subxcc %g2,%g4,%o4
subxcc %g3,%g1,%o5
- std %o4,[res_ptr+0]
+ std %o4,[RES_PTR+0]
addx %g0,%g0,%o4 ! save cy in register
- andcc size,1,%g0
- be Lret1b
+ andcc SIZE,1,%g0
+ be LOC(ret1b)
subcc %g0,%o4,%g0 ! restore cy
/* Add last limb */
- ld [s2_ptr+8],%g4
- ld [s1_ptr+8],%g2
+ ld [S2_PTR+8],%g4
+ ld [S1_PTR+8],%g2
subxcc %g2,%g4,%o4
- st %o4,[res_ptr+8]
+ st %o4,[RES_PTR+8]
-Lret1b: retl
+LOC(ret1b):
+ retl
addx %g0,%g0,%o0 ! return carry-out from most sign. limb
! ** V2 **
-/* If we come here, the alignment of s1_ptr and res_ptr as well as the
- alignment of s2_ptr and res_ptr differ. Since there are only two ways
+/* If we come here, the alignment of S1_PTR and RES_PTR as well as the
+ alignment of S2_PTR and RES_PTR differ. Since there are only two ways
things can be aligned (that we care about) we now know that the alignment
- of s1_ptr and s2_ptr are the same. */
+ of S1_PTR and S2_PTR are the same. */
-L2: cmp size,1
- be Ljone
+LOC(2): cmp SIZE,1
+ be LOC(jone)
nop
- andcc s1_ptr,4,%g0 ! s1_ptr unaligned? Side effect: cy=0
- be L_v2 ! if no, branch
+ andcc S1_PTR,4,%g0 ! S1_PTR unaligned? Side effect: cy=0
+ be LOC(v2) ! if no, branch
nop
-/* Add least significant limb separately to align s1_ptr and s2_ptr */
- ld [s1_ptr],%g4
- add s1_ptr,4,s1_ptr
- ld [s2_ptr],%g2
- add s2_ptr,4,s2_ptr
- add size,-1,size
+/* Add least significant limb separately to align S1_PTR and S2_PTR */
+ ld [S1_PTR],%g4
+ add S1_PTR,4,S1_PTR
+ ld [S2_PTR],%g2
+ add S2_PTR,4,S2_PTR
+ add SIZE,-1,SIZE
subcc %g4,%g2,%o4
- st %o4,[res_ptr]
- add res_ptr,4,res_ptr
+ st %o4,[RES_PTR]
+ add RES_PTR,4,RES_PTR
-L_v2: addx %g0,%g0,%o4 ! save cy in register
- addcc size,-8,size
- blt Lfin2
+LOC(v2):
+ addx %g0,%g0,%o4 ! save cy in register
+ addcc SIZE,-8,SIZE
+ blt LOC(fin2)
subcc %g0,%o4,%g0 ! restore cy
/* Add blocks of 8 limbs until less than 8 limbs remain */
-Loop2: ldd [s1_ptr+0],%g2
- ldd [s2_ptr+0],%o4
+LOC(loop2):
+ ldd [S1_PTR+0],%g2
+ ldd [S2_PTR+0],%o4
subxcc %g2,%o4,%g2
- st %g2,[res_ptr+0]
+ st %g2,[RES_PTR+0]
subxcc %g3,%o5,%g3
- st %g3,[res_ptr+4]
- ldd [s1_ptr+8],%g2
- ldd [s2_ptr+8],%o4
+ st %g3,[RES_PTR+4]
+ ldd [S1_PTR+8],%g2
+ ldd [S2_PTR+8],%o4
subxcc %g2,%o4,%g2
- st %g2,[res_ptr+8]
+ st %g2,[RES_PTR+8]
subxcc %g3,%o5,%g3
- st %g3,[res_ptr+12]
- ldd [s1_ptr+16],%g2
- ldd [s2_ptr+16],%o4
+ st %g3,[RES_PTR+12]
+ ldd [S1_PTR+16],%g2
+ ldd [S2_PTR+16],%o4
subxcc %g2,%o4,%g2
- st %g2,[res_ptr+16]
+ st %g2,[RES_PTR+16]
subxcc %g3,%o5,%g3
- st %g3,[res_ptr+20]
- ldd [s1_ptr+24],%g2
- ldd [s2_ptr+24],%o4
+ st %g3,[RES_PTR+20]
+ ldd [S1_PTR+24],%g2
+ ldd [S2_PTR+24],%o4
subxcc %g2,%o4,%g2
- st %g2,[res_ptr+24]
+ st %g2,[RES_PTR+24]
subxcc %g3,%o5,%g3
- st %g3,[res_ptr+28]
+ st %g3,[RES_PTR+28]
addx %g0,%g0,%o4 ! save cy in register
- addcc size,-8,size
- add s1_ptr,32,s1_ptr
- add s2_ptr,32,s2_ptr
- add res_ptr,32,res_ptr
- bge Loop2
+ addcc SIZE,-8,SIZE
+ add S1_PTR,32,S1_PTR
+ add S2_PTR,32,S2_PTR
+ add RES_PTR,32,RES_PTR
+ bge LOC(loop2)
subcc %g0,%o4,%g0 ! restore cy
-Lfin2: addcc size,8-2,size
- blt Lend2
+LOC(fin2):
+ addcc SIZE,8-2,SIZE
+ blt LOC(end2)
subcc %g0,%o4,%g0 ! restore cy
-Loope2: ldd [s1_ptr+0],%g2
- ldd [s2_ptr+0],%o4
+LOC(loope2):
+ ldd [S1_PTR+0],%g2
+ ldd [S2_PTR+0],%o4
subxcc %g2,%o4,%g2
- st %g2,[res_ptr+0]
+ st %g2,[RES_PTR+0]
subxcc %g3,%o5,%g3
- st %g3,[res_ptr+4]
+ st %g3,[RES_PTR+4]
addx %g0,%g0,%o4 ! save cy in register
- addcc size,-2,size
- add s1_ptr,8,s1_ptr
- add s2_ptr,8,s2_ptr
- add res_ptr,8,res_ptr
- bge Loope2
+ addcc SIZE,-2,SIZE
+ add S1_PTR,8,S1_PTR
+ add S2_PTR,8,S2_PTR
+ add RES_PTR,8,RES_PTR
+ bge LOC(loope2)
subcc %g0,%o4,%g0 ! restore cy
-Lend2: andcc size,1,%g0
- be Lret2
+LOC(end2):
+ andcc SIZE,1,%g0
+ be LOC(ret2)
subcc %g0,%o4,%g0 ! restore cy
/* Add last limb */
-Ljone: ld [s1_ptr],%g4
- ld [s2_ptr],%g2
+LOC(jone):
+ ld [S1_PTR],%g4
+ ld [S2_PTR],%g2
subxcc %g4,%g2,%o4
- st %o4,[res_ptr]
+ st %o4,[RES_PTR]
-Lret2: retl
+LOC(ret2):
+ retl
addx %g0,%g0,%o0 ! return carry-out from most sign. limb
+
+END(__mpn_sub_n)