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-rw-r--r--gcc/config/mips/vr4120-div.S74
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diff --git a/gcc/config/mips/vr4120-div.S b/gcc/config/mips/vr4120-div.S
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-/* Support file for -mfix-vr4120.
- Copyright (C) 2002, 2004, 2007 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 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.
-
-You should have received a copy of the GNU General Public License
- along with GCC; see the file COPYING3. If not see
-<http://www.gnu.org/licenses/>. */
-
-/* This file contains functions which implement divsi3 and modsi3 for
- -mfix-vr4120. div and ddiv do not give the correct result when one
- of the operands is negative. */
-
- .set nomips16
-
-#define DIV \
- xor $3,$4,$5 /* t = x ^ y */ ; \
- li $2,0x80000000; \
- .set noreorder; \
- bgez $4,1f /* x >= 0 */; \
- and $3,$3,$2 /* t = (x ^ y) & 0x80000000 in delay slot */ ;\
- .set reorder; \
- subu $4,$0,$4 /* x = -x */ ; \
-1:; \
- .set noreorder; \
- bgez $5,2f /* y >= 0 */ ; \
- nop; \
- subu $5,$0,$5 /* y = -y */ ; \
- .set reorder; \
-2:; \
- divu $0,$4,$5; /* we use divu because of INT_MIN */ \
- .set noreorder; \
- bne $5,$0,3f; \
- nop; \
- break 7 /* division on zero y */ ; \
-3:; \
- .set reorder; \
- mflo $2 /* r = x / y */ ; \
- .set noreorder; \
- beq $3,$0,4f /* t == 0 */ ; \
- nop; \
- subu $2,$0,$2 /* r = -r */ ; \
- .set reorder; \
-4:
-
- .globl __vr4120_divsi3
- .ent __vr4120_divsi3
-__vr4120_divsi3:
- DIV
- j $31
- .end __vr4120_divsi3
-
- .globl __vr4120_modsi3
- .ent __vr4120_modsi3
-__vr4120_modsi3:
- move $6,$4 # x1 = x
- move $7,$5 # y1 = y
- DIV
- mult $2,$7 # r = r * y1
- mflo $2
- .set noreorder
- j $31
- subu $2,$6,$2 # r = x1 - r in delay slot
- .end __vr4120_modsi3