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authorUlrich Drepper <drepper@redhat.com>1996-11-06 04:24:40 +0000
committerUlrich Drepper <drepper@redhat.com>1996-11-06 04:24:40 +0000
commit2c6fe0bd3b270fc644dd4c773f2d47b93f404efe (patch)
treea578bcc93bbeaafacb6012213c458e33b7907528 /sysdeps/alpha/divrem.h
parentf5311448f83eada5c5cabf55aae2619dcb1869c0 (diff)
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update from main archive 961105cvs/libc-961106
Wed Nov 6 04:30:26 1996 Ulrich Drepper <drepper@cygnus.com> * sysdeps/unix/sysv/linux/syscalls.list: Add weak alias llseek for _llseek syscall. Reported by Andy Sewell <puck@pookhill.demon.co.uk>. * string/argz.h: Don't protect by __USE_GNU. Tue Nov 5 23:38:28 1996 Ulrich Drepper <drepper@cygnus.com> * Lots of files: Update and reformat copyright. * Makefile (headers): Add xopen_lim.h. * catgets/nl_types.h: Move __BEGIN_DECLS before definition of nl_catd. * grp/grp.h: Define setgrent, getgrent, endgrent, and getgrent_r if __USE_XOPEN_EXTENDED is defined. * pwd/pwd.h: Define setpwent, getpwent, endpwent, and getpwent_r if __USE_XOPEN_EXTENDED is defined. * io/Makefile (routines): Add lchown. * io/sys/poll.h: Add definition of POLLWRNORM. * io/sys/stat.h: Declare lstat, fchmod, mknod when __USE_XOPEN_EXTENDED is defined. * libio/Makefile (routines): Add obprintf. * libio/obprintf.c: New file. * libio/iolibio.h: Add prototypes for _IO_obstack_vprintf and _IO_obstack_printf. * libio/libio.h: Fix typo. * libio/stdio.h: Declare tempnam if __USE_XOPEN_EXTENDED is defined. Add prototypes for obstack_vprintf and obstack_printf. * manual/creature.texi: Describe _XOPEN_SOURCE macro. * manual/intro.texi: Add reference to NSS chapter. * manual/libc.texinfo: Update UPDATED. Comment out `@printindex cp'. It works again. * manual/memory.texi: Add description for obstack_ptr_grow, obstack_int_grow, obstack_ptr_grow_fast, and obstack_int_grow_fast. * manual/nss.texi: Add a few @cindex entries and change NSS_STATUS_* index entries to @vindex. * manual/users.texi: Correct @cindex entry for Netgroup. * math/mathcalls.h: Use __USE_XOPEN and __USE_XOPEN_EXTENDED to make declarations visible for X/Open sources. * misc/search.h: Declare insque/remque only is __USE_SVID or __USE_XOPEN_EXTENDED is defined. * misc/sys/uio.h (readv, writev): Change return value from int to ssize_t. * posix/Makefile (headers): Add re_comp.h. * posix/re_comp.h: New file. XPG interface to regex functions. * posix/getconf.c: Add all names from XPG4.2. * posix/posix1_lim.h: Increase minimum values for _POSIX_CHILD_MAX and _POSIX_OPEN_MAX to minimums from XPG4.2. * sysdeps/generic/confname.h: Add all _SC_* names from XPG4.2. * sysdeps/posix/sysconf.c: Handle new _SC_* values. * sysdeps/stub/sysconf.c: Likewise. * posix/unistd.h: Add declaration of ualarm and lchown. Declare usleep, fchown, fchdir, nice, getpgid, setsid, getsid, setreuid, setregid, vfork, ttyslot, symlink, readlink, gethostid, truncate, ftruncate, getdtablesize, brk, sbrk, lockf when __USE_XOPEN_EXTENDED is defined. * posix/sys/wait.h: Declare wait3 if __USE_XOPEN_EXTENDED is defined. * shadow/shadow.h: Define SHADOW using _PATH_SHADOW. * sysdeps/generic/paths.h: Define _PATH_SHADOW. * sysdeps/unix/sysv/linux/paths.h: Likewise. * signal/signal.h: Declare killpg, sigstack and sigaltstack when __USE_XOPEN_EXTENDED is defined. * stdio/stdio.h: Declare tempnam when __USE_XOPEN is defined. * stdlib/stdlib.h: Make rand48 functions available when __USE_XOPEN is defined. Likewise for valloc, putenv, realpath, [efg]cvt*, and getsubopt functions. * string/string.h: Make memccpy, strdup, bcmp, bcopy, bzero, index, and rindex available when __USE_XOPEN_EXTENDED is defined. * sysdeps/mach/getpagesize.c: De-ANSI-fy. Change return type to int. * sysdeps/posix/getpagesize.c: Likewise. * sysdeps/stub/getpagesize.c: Likewise. * sysdeps/unix/getpagesize.c: Likewise. * time/africa: Update from tzdata1996l. * time/asia: Likewise. * time/australia: Likewise. * time/europe: Likewise. * time/northamerica: Likewise. * time/pacificnew: Likewise. * time/southamerica: Likewise. * time/tzfile.h: Update from tzcode1996m. * time/time.h: Declare strptime if __USE_XOPEN. Declare daylight and timezone also if __USE_XOPEN. * time/sys/time.h: Remove declaration of ualarm. * wctype/wctype.h: Just reference ISO C standard. Tue Nov 5 01:26:32 1996 Richard Henderson <rth@tamu.edu> * crypt/Makefile: Add crypt routines to libc as well iff $(crypt-in-libc) is set. Do this for temporary binary compatibility on existing Linux/Alpha installations. * stdlib/div.c, sysdeps/generic/div.c: Move file to .../generic/. * stdlib/ldiv.c, sysdeps/generic/ldiv.c: Likewise. * stdlib/lldiv.c, sysdeps/generic/lldiv.c: Likewise. * sysdeps/alpha/Makefile (divrem): Add divlu, dviqu, remlu, and remqu. * sysdeps/alpha/div.S: New file. * sysdeps/alpha/ldiv.S: New file. * sysdeps/alpha/lldiv.S: New file. * sysdeps/alpha/divrem.h: Merge signed and unsigned division. Take pointers from Linus and tighten the inner loops a bit. * sysdeps/alpha/divl.S: Change defines for merged routines. * sysdeps/alpha/divq.S: Likewise. * sysdeps/alpha/reml.S: Likewise. * sysdeps/alpha/remq.S: Likewise. * sysdeps/alpha/divlu.S: Remove file. * sysdeps/alpha/divqu.S: Likewise. * sysdeps/alpha/remlu.S: Likewise. * sysdeps/alpha/remqu.S: Likewise. * sysdeps/alpha/bsd-_setjmp.S: If PROF, call _mcount. * sysdeps/alpha/bsd-setjmp.S: Likewise. * sysdeps/alpha/bzero.S: Likewise. * sysdeps/alpha/ffs.S: Likewise. * sysdeps/alpha/htonl.S: Likewise. * sysdeps/alpha/htons.S: Likewise. * sysdeps/alpha/memchr.S: Likewise. * sysdeps/alpha/memset.S: Likewise. * sysdeps/alpha/s_copysign.S: Likewise. * sysdeps/alpha/s_fabs.S: Likewise. * sysdeps/alpha/setjmp.S: Likewise. * sysdeps/alpha/stpcpy.S: Likewise. * sysdeps/alpha/stpncpy.S: Likewise. * sysdeps/alpha/strcat.S: Likewise. * sysdeps/alpha/strchr.S: Likewise. * sysdeps/alpha/strcpy.S: Likewise. * sysdeps/alpha/strlen.S: Likewise. * sysdeps/alpha/strncat.S: Likewise. * sysdeps/alpha/strncpy.S: Likewise. * sysdeps/alpha/strrchr.S: Likewise. * sysdeps/alpha/udiv_qrnnd.S: Likewise. Fix private labels. Convert two small jumps to use conditional moves. * sysdeps/unix/alpha/sysdep.h: Compress all __STDC__ nastiness. (PSEUDO): If PROF, call _mcount. * sysdeps/unix/sysv/linux/alpha/brk.S: If PROF, call _mcount. * sysdeps/unix/sysv/linux/alpha/clone.S: Likewise. * sysdeps/unix/sysv/linux/alpha/ieee_get_fp_control.S: Likewise. * sysdeps/unix/sysv/linux/alpha/ieee_set_fp_control.S: Likewise. * sysdeps/unix/sysv/linux/alpha/llseek.S: Likewise. * sysdeps/unix/sysv/linux/alpha/sigsuspend.S: Likewise. * sysdeps/unix/sysv/linux/alpha/syscall.S: Likewise. * sysdeps/alpha/memcpy.S: New file. Odd layout because it should eventually contain memmove as well. * sysdeps/alpha/strcmp.S: New file. * sysdeps/alpha/strncmp.S: New file. * sysdeps/alpha/w_sqrt.S: New file. Tue Nov 5 18:06:06 1996 Ulrich Drepper <drepper@cygnus.com> * sysdeps/mach/hurd/ttyname_r.c: Use `size_t' for len variable. Tue Nov 5 12:09:29 1996 Ulrich Drepper <drepper@cygnus.com> * sysdep/generic/sysdep.h: Define END only if not yet defined. * sysdep/unix/sysdep.h: Define PSEUDO_END only if not yet defined. Reported by Thomas Bushnell, n/BSG. Mon Nov 4 22:46:53 1996 Ulrich Drepper <drepper@cygnus.com> * manual/users.texi (Netgroup Data): Remove { } around @cindex. Mon Nov 4 19:07:05 1996 Ulrich Drepper <drepper@cygnus.com> * malloc/calloc.c: Check for overflow before trying to allocate memory. Proposed by Neil Matthews <nm@adv.sbc.sony.co.jp>. Fri Nov 1 18:18:32 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * manual/llio.texi (Operating Modes): Add missing arguments to @deftypevr in O_NONBLOCK description. * manual/time.texi (Time Zone Functions): Enclose type name in braces in description of tzname. FIXME: this does not yet work correctly in info. Sun Nov 3 17:29:06 1996 Ulrich Drepper <drepper@cygnus.com> * features.h: Add X/Open macros. * posix/unistd.h: Define X/Open macros. * sysdeps/generic/confname.h: Add _SC_XOPEN_XCU_VERSION, _SC_XOPEN_UNIX, _SC_XOPEN_CRYPT, _SC_XOPEN_ENH_I18N, _SC_XOPEN_SHM, _SC_2_CHAR_TERM, _SC_2_C_VERSION, and _SC_2_UPE. * sysdeps/posix/sysconf.c: Handle new constants. * sysdeps/stub/sysconf.c: Likewise. * sysdeps/unix/sysv/linux/posix_opt.h: Add definition of _XOPEN_SHM. * catgets/catgets.c (catopen): Set errno to ENOMEM when we run out of memory. (catgets): Set errno to EBADF when catalog handle is invalid. Set errno to ENOMSG when translation is not available. (catclose): Set errno to EBADF when catalog handle is invalid. * ctype/ctype.h: Declare isascii and toascii when __USE_XOPEN. Likewise for _toupper and _tolower. * manual/arith.texi: Document strtoq, strtoll, strtouq, strtoull, strtof, and strtold. * manual/math.texi: Document HUGE_VALf and HUGE_VALl. * manual/stdio.h: Document ' flag for numeric formats of scanf. * manual/users.texi: Document that cuserid shouldn't be used. * misc/Makefile (routines): Add dirname. (headers): Add libgen.h. (tests): Add tst-dirname. * misc/dirname.c: New file. * misc/libgen.h: New file. * misc/tst-dirname.c: New file. * misc/search.h: Parameter of hcreate must be of type size_t. * misc/hsearch.c: Likewise. * misc/hsearch_r.c: Likewise for hcreate_r. * misc/search.h: Parameters of insque and remque must be `void *'. * misc/insremque.c: Likewise. * posix/unistd.h: Move declarations of mktemp and mkstemp to... * stdlib/stdlib.h: ...here. * posix/unistd.h [__USE_XOPEN]: Add prototypes for crypt, setkey, encrypt, and swab. * stdio-common/printf-parse.h (struct printf_spec): Add pa_wchar and pa_wstring. (parse_one_spec): Remove Linux compatibility code. Recognize %C and %S formats. * stdio-common/printf.h: Add PA_WCHAR and PA_WSTRING. * stdio-common/vfprintf.c: Add implementation of %C and %S format. * stdio-common/vfscanf.c: Likewise for scanf. * stdlib/l64a.c: Return value for 0 must be the empty string. * stdlib/stdlib.h: Declare reentrant function from rand49 family only if __USE_REENTRANT. Declare rand48 functions also if __USE_XOPEN. * stdlib/strtol.c: Return 0 and set errno to EINVAL when BASE is not a legal value. Return 0 and set errno to EINVAL when strou* sees negativ number. * stdlib/tst-strtol.c: De-ANSI-fy. Change expected results for test of unsigned function and negative input. * string/stratcliff.c: Prevent warnings. * string.h: Move declaration of swab to <unistd.h>. * string/swab.c: De-ANSI-fy. * sysdeps/posix/cuserid.c: Implement using getpwuid_r. * sysdeps/posix/mkstemp.c: Include <stdlib.h> for prototype. * sysdeps/posix/mktemp.c: Likewise. * sysdeps/stub/mkstemp.c: Likewise. * sysdeps/stub/mktemp.c: Likewise. * sysvipc/sys/ipc.h: Prototypes of ftok have to be of types `const char *' and `int'. * sysvipc/ftok.c: Likewise. Make sure only lower 8 bits of PROJ_ID are used. Sun Nov 3 03:21:28 1996 Heiko Schroeder <Heiko.Schroeder@post.rwth-aachen.de> * locale/programs/ld-numeric.c (numeric_output): Compute idx[0] correctly. Sat Nov 2 17:44:32 1996 Ulrich Drepper <drepper@cygnus.com> * sysdeps/posix/cuserid.c: Use reentrant functions. * manual/users.texi: Tell that cuserid is marked to be withdrawn in XPG4.2. Sat Nov 2 14:26:37 1996 Ulrich Drepper <drepper@cygnus.com> Linus said he will make sure no system call will return a value in -1 ... -4095 as a valid result. * sysdeps/unix/sysv/linux/i386/sysdep.h: Correct test for error. * sysdeps/unix/sysv/linux/i386/syscall.S: Likewise. * sysdeps/unix/sysv/linux/m68k/sysdep.h: Likewise. * sysdeps/unix/sysv/linux/m68k/syscall.S: Likewise. Sat Nov 2 16:54:49 1996 NIIBE Yutaka <gniibe@mri.co.jp> * sysdeps/stub/lockfile.c [!USE_IN_LIBIO]: Define weak alias for __funlockfile, not a circular alias. Define __IO_ftrylockfile if USE_IN_LIBIO and __ftrylockfile if not, not vice versa. * sysdeps/unix/sysv/linux/i386/sysdep.S (__errno_location): Make it a weak symbol. * sysdeps/unix/sysv/linux/m68k/sysdep.S (__errno_location): Likewise. Likewise. * crypt/Makefile (rpath-link): Extend search path to current directory.
Diffstat (limited to 'sysdeps/alpha/divrem.h')
-rw-r--r--sysdeps/alpha/divrem.h308
1 files changed, 173 insertions, 135 deletions
diff --git a/sysdeps/alpha/divrem.h b/sysdeps/alpha/divrem.h
index eaf892b3c6..b83908dc9f 100644
--- a/sysdeps/alpha/divrem.h
+++ b/sysdeps/alpha/divrem.h
@@ -1,25 +1,25 @@
/* Copyright (C) 1996 Free Software Foundation, Inc.
Contributed by David Mosberger (davidm@cs.arizona.edu).
-This file is part of the GNU C Library.
+ This file is part of the GNU C Library.
-The GNU C 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 C 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 C 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.
+ The GNU C 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 C Library; see the file COPYING.LIB. If
-not, write to the Free Software Foundation, Inc., 675 Mass Ave,
-Cambridge, MA 02139, USA. */
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If
+ not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+ Cambridge, MA 02139, USA. */
/* The current Alpha chips don't provide hardware for integer
-division. The C compiler expects the functions
+ division. The C compiler expects the functions
__divqu: 64-bit unsigned long divide
__remqu: 64-bit unsigned long remainder
@@ -27,10 +27,10 @@ division. The C compiler expects the functions
__divlu/__remlu: unsigned 32-bit
__divls/__remls: signed 32-bit
-These are not normal C functions: instead of the normal calling
-sequence, these expect their arguments in registers t10 and t11, and
-return the result in t12 (aka pv). Register AT may be clobbered
-(assembly temporary), anything else must be saved. */
+ These are not normal C functions: instead of the normal calling
+ sequence, these expect their arguments in registers t10 and t11, and
+ return the result in t12 (aka pv). Register AT may be clobbered
+ (assembly temporary), anything else must be saved. */
#include <sysdep.h>
@@ -41,147 +41,185 @@ return the result in t12 (aka pv). Register AT may be clobbered
# include <machine/pal.h>
#endif
-#ifdef DEBUG
-# define arg1 a0
-# define arg2 a1
-# define result v0
-# define mask t0
-# define tmp0 t1
-# define tmp1 t2
-# define sign t3
-# define retaddr ra
-#else
-# define arg1 t10
-# define arg2 t11
-# define result t12
-# define mask v0
-# define tmp0 t0
-# define tmp1 t1
-# define sign t2
-# define retaddr t9
-#endif
+#define mask v0
+#define divisor t0
+#define compare AT
+#define tmp1 t2
+#define tmp2 t3
+#define retaddr t9
+#define arg1 t10
+#define arg2 t11
+#define result t12
-# define divisor arg2
#if IS_REM
-# define dividend result
-# define quotient arg1
-# define GETDIVIDEND bis arg1,zero,dividend
+# define DIV_ONLY(x,y...)
+# define REM_ONLY(x,y...) x,##y
+# define modulus result
+# define quotient t1
+# define GETSIGN(x) mov arg1, x
+# define STACK 32
#else
-# define dividend arg1
-# define quotient result
-# define GETDIVIDEND
+# define DIV_ONLY(x,y...) x,##y
+# define REM_ONLY(x,y...)
+# define modulus t1
+# define quotient result
+# define GETSIGN(x) xor arg1, arg2, x
+# define STACK 48
#endif
#if SIZE == 8
-# define LONGIFYarg1 GETDIVIDEND
-# define LONGIFYarg2
-#else
-# if SIGNED
-# define LONGIFYarg1 addl arg1,zero,dividend
-# define LONGIFYarg2 addl arg2,zero,divisor
-# else
-# define LONGIFYarg1 zapnot arg1,0x0f,dividend
-# define LONGIFYarg2 zapnot arg2,0x0f,divisor
-# endif
-#endif
-
-#if SIGNED
-# define SETSIGN(sign,reg,tmp) subq zero,reg,tmp; cmovlt sign,tmp,reg
-# if IS_REM
-# define GETSIGN(x,y,s) bis x,zero,s
-# else
-# define GETSIGN(x,y,s) xor x,y,s
-# endif
+# define LONGIFY(x,y) mov x,y
+# define SLONGIFY(x,y) mov x,y
+# define _SLONGIFY(x)
+# define NEG(x,y) negq x,y
#else
-# define SETSIGN(sign,reg,tmp)
-# define GETSIGN(x,y,s)
+# define LONGIFY(x,y) zapnot x,15,y
+# define SLONGIFY(x,y) sextl x,y
+# define _SLONGIFY(x) sextl x,x
+# define NEG(x,y) negl x,y
#endif
.set noreorder
.set noat
- .ent FUNC_NAME
- .globl FUNC_NAME
-
-#define FRAME_SIZE 0x30
+ .ent UFUNC_NAME
+ .globl UFUNC_NAME
- .align 5
-FUNC_NAME:
+ .align 3
+UFUNC_NAME:
+ lda sp, -STACK(sp)
+ .frame sp, STACK, retaddr, 0
#ifdef PROF
- lda sp, -0x18(sp)
- stq ra, 0x00(sp)
- stq pv, 0x08(sp)
- stq gp, 0x10(sp)
+ stq ra, 0(sp)
+ stq pv, 8(sp)
+ stq gp, 16(sp)
br AT, 1f
1: ldgp gp, 0(AT)
mov retaddr, ra
- jsr AT, _mcount
+ lda AT, _mcount
+ jsr AT, (AT), _mcount
- ldq ra, 0x00(sp)
- ldq pv, 0x08(sp)
- ldq gp, 0x10(sp)
- lda sp, 0x18(sp)
+ ldq ra, 0(sp)
+ ldq pv, 8(sp)
+ ldq gp, 16(sp)
#endif
- .frame sp, FRAME_SIZE, retaddr, 0
- lda sp,-FRAME_SIZE(sp)
- .prologue 1
- stq arg1,0x00(sp)
- LONGIFYarg1
- stq arg2,0x08(sp)
- LONGIFYarg2
- stq mask,0x10(sp)
- bis zero,1,mask
- stq tmp0,0x18(sp)
- bis zero,zero,quotient
- stq tmp1,0x20(sp)
- beq divisor,$divbyzero
- stq sign,0x28(sp)
- GETSIGN(dividend,divisor,sign)
-#if SIGNED
- subq zero,dividend,tmp0
- subq zero,divisor,tmp1
- cmovlt dividend,tmp0,dividend
- cmovlt divisor,tmp1,divisor
+ .prologue 0
+
+$udiv:
+ stq t0, 0(sp)
+ LONGIFY (arg2, divisor)
+ stq t1, 8(sp)
+ LONGIFY (arg1, modulus)
+ stq v0, 16(sp)
+ clr quotient
+ stq tmp1, 24(sp)
+ ldiq mask, 1
+ DIV_ONLY(stq tmp2,32(sp))
+
+ beq divisor, $divbyzero
+
+ .align 3
+#if SIZE == 8
+ /* Shift divisor left. */
+1: cmpult divisor, modulus, compare
+ blt divisor, 2f
+ addq divisor, divisor, divisor
+ addq mask, mask, mask
+ bne compare, 1b
+ unop
+2:
+#else
+ /* Shift divisor left using 3-bit shifts as we can't overflow.
+ This results in looping three times less here, but up to
+ two more times later. Thus using a large shift isn't worth it. */
+1: cmpult divisor, modulus, compare
+ s8addq divisor, zero, divisor
+ s8addq mask, zero, mask
+ bne compare, 1b
#endif
- /*
- * Shift divisor left until either bit 63 is set or until it
- * is at least as big as the dividend:
- */
- .align 3
-1: cmpule dividend,divisor,AT
- blt divisor,2f
- blbs AT,2f
- addq mask,mask,mask
- addq divisor,divisor,divisor
- br 1b
-
- .align 3
-2: addq mask,quotient,tmp0
- cmpule divisor,dividend,AT
- subq dividend,divisor,tmp1
- srl divisor,1,divisor
- srl mask,1,mask
- cmovlbs AT,tmp0,quotient
- cmovlbs AT,tmp1,dividend
- bne mask,2b
-
- ldq arg1,0x00(sp)
- SETSIGN(sign,result,tmp0)
-$done: ldq arg2,0x08(sp)
- ldq mask,0x10(sp)
- ldq tmp0,0x18(sp)
- ldq tmp1,0x20(sp)
- ldq sign,0x28(sp)
- lda sp,FRAME_SIZE(sp)
- ret zero,(retaddr),0
+
+ /* Now go back to the right. */
+3: DIV_ONLY(addq quotient, mask, tmp2)
+ srl mask, 1, mask
+ cmpule divisor, modulus, compare
+ subq modulus, divisor, tmp1
+ DIV_ONLY(cmovne compare, tmp2, quotient)
+ srl divisor, 1, divisor
+ cmovne compare, tmp1, modulus
+ bne mask, 3b
+
+$done: ldq t0, 0(sp)
+ ldq t1, 8(sp)
+ ldq v0, 16(sp)
+ ldq tmp1, 24(sp)
+ DIV_ONLY(ldq tmp2, 32(sp))
+ lda sp, STACK(sp)
+ ret zero, (retaddr), 1
$divbyzero:
- lda a0,GEN_INTDIV(zero)
+ mov a0, tmp1
+ ldiq a0, GEN_INTDIV
call_pal PAL_gentrap
- bis zero,zero,result /* if trap returns, return 0 */
- ldq arg1,0x00(sp)
+ mov tmp1, a0
+ clr result /* If trap returns, return zero. */
br $done
- END(FUNC_NAME)
+ .end UFUNC_NAME
+
+ .ent SFUNC_NAME
+ .globl SFUNC_NAME
+
+ .align 3
+SFUNC_NAME:
+ lda sp, -STACK(sp)
+ .frame sp, STACK, retaddr, 0
+#ifdef PROF
+ stq ra, 0(sp)
+ stq pv, 8(sp)
+ stq gp, 16(sp)
+
+ br AT, 1f
+1: ldgp gp, 0(AT)
+
+ mov retaddr, ra
+ jsr AT, _mcount
+
+ ldq ra, 0(sp)
+ ldq pv, 8(sp)
+ ldq gp, 16(sp)
+#endif
+ .prologue 0
+
+ or arg1, arg2, AT
+ _SLONGIFY(AT)
+ bge AT, $udiv /* don't need to mess with signs */
+
+ /* Save originals and find absolute values. */
+ stq arg1, 0(sp)
+ NEG (arg1, AT)
+ stq arg2, 8(sp)
+ cmovge AT, AT, arg1
+ stq retaddr, 16(sp)
+ NEG (arg2, AT)
+ stq tmp1, 24(sp)
+ cmovge AT, AT, arg2
+
+ /* Do the unsigned division. */
+ bsr retaddr, UFUNC_NAME
+
+ /* Restore originals and adjust the sign of the result. */
+ ldq arg1, 0(sp)
+ ldq arg2, 8(sp)
+ GETSIGN (AT)
+ NEG (result, tmp1)
+ _SLONGIFY(AT)
+ ldq retaddr, 16(sp)
+ cmovlt AT, tmp1, result
+ ldq tmp1, 24(sp)
+
+ lda sp, STACK(sp)
+ ret zero, (retaddr), 1
+
+ .end SFUNC_NAME