diff options
Diffstat (limited to 'libgcc/config/arc/ieee-754/extendsfdf2.S')
| -rw-r--r-- | libgcc/config/arc/ieee-754/extendsfdf2.S | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/libgcc/config/arc/ieee-754/extendsfdf2.S b/libgcc/config/arc/ieee-754/extendsfdf2.S new file mode 100644 index 00000000000..12e29449a96 --- /dev/null +++ b/libgcc/config/arc/ieee-754/extendsfdf2.S @@ -0,0 +1,122 @@ +/* Copyright (C) 2006, 2008-2013 Free Software Foundation, Inc. + Contributor: Joern Rennecke <joern.rennecke@embecosm.com> + on behalf of Synopsys 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 3, or (at your option) any later +version. + +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. + +Under Section 7 of GPL version 3, you are granted additional +permissions described in the GCC Runtime Library Exception, version +3.1, as published by the Free Software Foundation. + +You should have received a copy of the GNU General Public License and +a copy of the GCC Runtime Library Exception along with this program; +see the files COPYING3 and COPYING.RUNTIME respectively. If not, see +<http://www.gnu.org/licenses/>. */ + +#include "arc-ieee-754.h" + +#if 0 /* DEBUG */ + .global __extendsfdf2 + .balign 4 + FUNC(__extendsfdf2) +__extendsfdf2: + push_s blink + bl.d __extendsfdf2_c + push_s r0 + ld_s r2,[sp] + st_s r1,[sp] + push_s r0 + bl.d __extendsfdf2_asm + mov_s r0,r2 + pop_s r2 + pop_s r3 + pop_s blink + cmp r0,r2 + cmp.eq r1,r3 + jeq_s [blink] + bl abort + ENDFUNC(__extendsfdf2) +#define __extendsfdf2 __extendsfdf2_asm +#endif /* DEBUG */ +#if 0 /* ARC600 */ +__extendsfdf2: + lsr r2,r0,23 + tst r2,0xff + bic.ne.f r2,0xff + beq_s .Linf_nan_denorm_0 +.. +.Linf_nan_denorm: + bbit1 r0,30,.Linf_nan +#endif + .global __extendsfdf2 + .balign 4 + FUNC(__extendsfdf2) +__extendsfdf2: + add.f r1,r0,r0 + norm r3,r1 +#ifdef __LITTLE_ENDIAN__ + lsr_s DBL0H,r1,4 + brhs r3,7,.Linf_nan_denorm_0 + asl_s DBL0L,r0,29 + add_s DBL0H,DBL0H, \ + 0x38000000 +#else + lsr r2,r1,4 + brhs r3,7,.Linf_nan_denorm_0 + asl_s DBL0L,r1,28 + add DBL0H,r2, \ + 0x38000000 +#endif + j_s.d [blink] + bxor.cs DBL0H,DBL0H,31 + .balign 4 +.Linf_nan_denorm_0: +#ifdef __LITTLE_ENDIAN__ + mov_s DBL0H,r0 + jeq.d [blink] + mov.eq DBL0L,0 +#else + jeq_s [blink] +#endif + bmi .Linf_nan + asl_s r0,r0,r3 + rsub r3,r3,0x380+6 +#ifdef __LITTLE_ENDIAN__ + asl_s r3,r3,20 + lsr DBL0H,r0,9 + asl_s DBL0L,r0,23 + add_s DBL0H,DBL0H,r3 + j_s.d [blink] + bxor.cs DBL0H,DBL0H,31 +#else + asl DBL0L,r0,23 + lsr_s DBL0H,r0,9 + asl_s r3,r3,20 + bxor.cs DBL0H,DBL0H,31 + j_s.d [blink] + add_l DBL0H,DBL0H,r3 +#endif +.Linf_nan: +#ifdef __LITTLE_ENDIAN__ + lsr DBL0H,r0,3 + + or_s DBL0H,DBL0H,r0 + j_s.d [blink] + mov_l DBL0L,0 +#else + lsr r3,r0,3 + mov_s DBL0L,0 + j_s.d [blink] + or_l DBL0H,r0,r3 +#endif + ENDFUNC(__extendsfdf2) |