| /* Copyright (C) 2008 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| /* |
| * File: binopD.S |
| * |
| * Code: 32-bit integer divide operation. If "div" is set, the code |
| * returns the quotient, else it returns the remainder. |
| * Also, a divide-by-zero check is done. |
| * |
| * For: div-int, rem-int |
| * |
| * Description: Perform a binary operation on two source |
| * |
| * Format: AA|op CC|BB (23x) |
| * |
| * Syntax: op vAA, vBB, vCC |
| */ |
| |
| %default {"div":"1"} |
| |
| FETCH_BB 1, %eax # %eax<- BB |
| FETCH_CC 1, %ecx # %ecx<- CC |
| GET_VREG %eax # %eax<- vBB |
| GET_VREG %ecx # %ecx<- vCC |
| cmp $$0, %ecx # check for divide by zero |
| je common_errDivideByZero # handle divide by zero |
| cmpl $$-1, %ecx # handle -1 special case divide error |
| jne .L${opcode}_noerror |
| cmpl $$0x80000000,%eax # handle min int special case divide error |
| je .L${opcode}_break |
| .L${opcode}_noerror: |
| cdq # sign-extend %eax to %edx |
| idiv %ecx # divide %edx:%eax by %ecx |
| .if $div |
| SET_VREG %eax rINST # vAA<- %eax (quotient) |
| .else |
| SET_VREG %edx rINST # vAA<- %edx (remainder) |
| .endif |
| jmp .L${opcode}_break2 |
| %break |
| .L${opcode}_break: |
| .if $div |
| movl $$0x80000000, (rFP, rINST, 4) # vAA<- min int |
| .else |
| movl $$0, (rFP, rINST, 4) # vAA<- 0 |
| .endif |
| .L${opcode}_break2: |
| FINISH 2 # jump to next instruction |