diff options
Diffstat (limited to 'gcc/config/arc/ieee-754/gedf2.S')
| -rw-r--r-- | gcc/config/arc/ieee-754/gedf2.S | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/gcc/config/arc/ieee-754/gedf2.S b/gcc/config/arc/ieee-754/gedf2.S new file mode 100644 index 00000000000..3640d74a549 --- /dev/null +++ b/gcc/config/arc/ieee-754/gedf2.S @@ -0,0 +1,89 @@ +/* Copyright 2008 Free Software Foundation, Inc. + +This file is part of GCC. + +GCC is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free +Software Foundation; either version 2, or (at your option) any later +version. + +In addition to the permissions in the GNU General Public License, the +Free Software Foundation gives you unlimited permission to link the +compiled version of this file into combinations with other programs, +and to distribute those combinations without any restriction coming +from the use of this file. (The General Public License restrictions +do apply in other respects; for example, they cover modification of +the file, and distribution when not linked into a combine +executable.) + +GCC 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 General Public License +for more details. + +You should have received a copy of the GNU General Public License +along with GCC; see the file COPYING. If not, write to the Free +Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301, USA. */ + +#include "arc-ieee-754.h" +/* inputs: DBL0, DBL1 + output: c flags to be used for 'hs' condition + clobber: r12, flags */ +/* For NaNs, bit 19.. bit 30 of the high word must be set. */ +#if 0 /* DEBUG */ + .global __gedf2 + .balign 4 + FUNC(__gedf2) +__gedf2: + st.a r11,[sp,-4]` push_s blink` st.a r10,[sp,-4]` st.a r9,[sp,-4] + st.a r8,[sp,-4]` st.a r7,[sp,-4]` st.a r6,[sp,-4]` st.a r5,[sp,-4] + st.a r4,[sp,-4]` push_s r3` push_s r2` push_s r1` + bl.d __gedf2_c` push_s r0 + mov r11,r0` pop_s r0` pop_s r1` pop_s r2` pop_s r3 + ld.ab r4,[sp,4]` ld.ab r5,[sp,4]` ld.ab r6,[sp,4]` + ld.ab r7,[sp,4]` ld.ab r8,[sp,4]` ld.ab r9,[sp,4] + bl.d __gedf2_asm` ld.ab r10,[sp,4] + pop_s blink + brge.d r11,0,0f + ld.ab r11,[sp,4] + jlo [blink] + bl abort +0: jhs [blink] + bl abort + ENDFUNC(__gedf2) +#define __gedf2 __gedf2_asm +#endif /* DEBUG */ + .global __gedf2 + .balign 4 + HIDDEN_FUNC(__gedf2) +__gedf2: + or.f r12,DBL0H,DBL1H + bmi.d .Lneg + bmsk_s r12,r12,20 + add1.f 0,r12,DBL0H ; clear z; set c iff NaN + add1.cc.f r12,r12,DBL1H ; clear z; set c iff NaN + bbit1 DBL0H,31,.Lneg + cmp.cc DBL0H,DBL1H + j_s.d [blink] + cmp.eq DBL0L,DBL1L + .balign 4 +.Lneg: breq.d DBL1H,0,.L0 + add1.f 0,r12,DBL0H + add1.cc.f r12,r12,DBL1H + cmp.cc DBL1H,DBL0H + j_s.d [blink] + cmp.eq DBL1L,DBL0L + .balign 4 +.L0: + bxor.f 0,DBL0H,31 ; check for high word of -0. + beq_s .Lcheck_0 + cmp.cc DBL1H,DBL0H + j_s.d [blink] + cmp.eq DBL1L,DBL0L +.Lcheck_0: + ; high words suggest DBL0 may be -0, DBL1 +0; check low words. + cmp_s DBL1H,DBL0L + j_s.d [blink] + cmp.cc DBL1H,DBL1L + ENDFUNC(__gedf2) |