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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /gcc/config/vax/lib1funcs.asm
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Diffstat (limited to 'gcc/config/vax/lib1funcs.asm')
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diff --git a/gcc/config/vax/lib1funcs.asm b/gcc/config/vax/lib1funcs.asm
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+/* Copyright (C) 2009 Free Software Foundation, Inc.
+ This file is part of GCC.
+ Contributed by Maciej W. Rozycki <macro@linux-mips.org>.
+
+ This file 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.
+
+ This file 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/>. */
+
+#ifdef L_udivsi3
+ .text
+ .globl __udivsi3
+ .type __udivsi3, @function
+__udivsi3:
+ .word 0
+ movl 8(%ap), %r1
+ blss 0f /* Check bit #31 of divisor. */
+ movl 4(%ap), %r2
+ blss 1f /* Check bit #31 of dividend. */
+
+ /* Both zero, do a standard division. */
+
+ divl3 %r1, %r2, %r0
+ ret
+
+ /* MSB of divisor set, only 1 or 0 may result. */
+0:
+ decl %r1
+ clrl %r0
+ cmpl %r1, 4(%ap)
+ adwc $0, %r0
+ ret
+
+ /* MSB of dividend set, do an extended division. */
+1:
+ clrl %r3
+ ediv %r1, %r2, %r0, %r3
+ ret
+ .size __udivsi3, . - __udivsi3
+ .previous
+#endif
+
+#ifdef L_umodsi3
+ .text
+ .globl __umodsi3
+ .type __umodsi3, @function
+__umodsi3:
+ .word 0
+ movl 8(%ap), %r1
+ blss 0f /* Check bit #31 of divisor. */
+ movl 4(%ap), %r2
+ blss 1f /* Check bit #31 of dividend. */
+
+ /* Both zero, do a standard division. */
+
+ divl3 %r1, %r2, %r0
+ mull2 %r0, %r1
+ subl3 %r1, %r2, %r0
+ ret
+
+ /* MSB of divisor set, subtract the divisor at most once. */
+0:
+ movl 4(%ap), %r2
+ clrl %r0
+ cmpl %r2, %r1
+ sbwc $0, %r0
+ bicl2 %r0, %r1
+ subl3 %r1, %r2, %r0
+ ret
+
+ /* MSB of dividend set, do an extended division. */
+1:
+ clrl %r3
+ ediv %r1, %r2, %r3, %r0
+ ret
+ .size __umodsi3, . - __umodsi3
+ .previous
+#endif