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1998-09-25  Ulrich Drepper  <drepper@cygnus.com>

	* math/Makefile (gmp-objs): Add mp_clz_tab.

1998-09-25  David S. Miller  <davem@pierdol.cobaltmicro.com>

	* sysdeps/sparc/fpu/feholdexcpt.c (feholdexcept): Clear bits don't
	set them.
	* stdlib/longlong.h (sparc udiv_qrnnd): Define inline version for
	cpus lacking hardware multiply and divide.

1998-09-24  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* db/Makefile ($(inst_slibdir)/libdb.so$(libdb1.so-version)): Use
	$(<F), not $(^F).

1998-09-24  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* db/btree/bt_delete.c: Fix -Wparentheses warning.

1998-09-24  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* Makefile ($(inst_includedir)/gnu/lib-names.h): Use
	$(do-install).

	* time/strftime.c (f_wkday): Remove duplicate definition.
	* time/strftime.c (my_strftime): Don't store past the end of a
This commit is contained in:
Ulrich Drepper
1998-09-25 21:55:47 +00:00
parent e503270ca5
commit 390a4882ff
7 changed files with 71 additions and 22 deletions
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39
stdlib/longlong.h
View File

@ -1,5 +1,5 @@
/* longlong.h -- definitions for mixed size 32/64 bit arithmetic.
Copyright (C) 1991, 92, 93, 94, 96, 97 Free Software Foundation, Inc.
Copyright (C) 1991, 92, 93, 94, 96, 97, 98 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -1135,12 +1135,39 @@ extern USItype __udiv_qrnnd ();
#define UMUL_TIME 39 /* 39 instructions */
#endif
#ifndef udiv_qrnnd
#ifndef LONGLONG_STANDALONE
/* It's quite necessary to add this much assembler for the sparc.
The default udiv_qrnnd (in C) is more than 10 times slower! */
#define udiv_qrnnd(q, r, n1, n0, d) \
do { USItype __r; \
(q) = __udiv_qrnnd (&__r, (n1), (n0), (d)); \
(r) = __r; \
} while (0)
__asm__ ("! Inlined udiv_qrnnd
mov 32,%%g1
subcc %1,%2,%%g0
1: bcs 5f
addxcc %0,%0,%0 ! shift n1n0 and a q-bit in lsb
sub %1,%2,%1 ! this kills msb of n
addx %1,%1,%1 ! so this can't give carry
subcc %%g1,1,%%g1
2: bne 1b
subcc %1,%2,%%g0
bcs 3f
addxcc %0,%0,%0 ! shift n1n0 and a q-bit in lsb
b 3f
sub %1,%2,%1 ! this kills msb of n
4: sub %1,%2,%1
5: addxcc %1,%1,%1
bcc 2b
subcc %%g1,1,%%g1
! Got carry from n. Subtract next step to cancel this carry.
bne 4b
addcc %0,%0,%0 ! shift n1n0 and a 0-bit in lsb
sub %1,%2,%1
3: xnor %0,0,%0
! End of inline udiv_qrnnd" \
: "=&r" ((USItype)(q)), \
"=&r" ((USItype)(r)) \
: "r" ((USItype)(d)), \
"1" ((USItype)(n1)), \
"0" ((USItype)(n0)) : "%g1" __AND_CLOBBER_CC)
#define UDIV_TIME (3+7*32) /* 7 instructions/iteration. 32 iterations. */
extern USItype __udiv_qrnnd __P ((USItype *, USItype, USItype, USItype));
#define UDIV_TIME 140
#endif /* LONGLONG_STANDALONE */