1 /* Copyright (C) 2008 The Android Open Source Project 2 * 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 /* 17 * File: binopDivRemLong.S 18 * 19 * Code: 64-bit long divide operation. Variable 20 * "func" defines the function called to do the operation. 21 * 22 * For: div-long, rem-long 23 * 24 * Description: Perform a binary operation on two source registers 25 * and store the result in a destination register. 26 * 27 * Format: AA|op CC|BB (23x) 28 * 29 * Syntax: op vAA, vBB, vCC 30 */ 31 32 %default {"func":"__divdi3"} 33 34 FETCH_CC 1, %edx # %edx<- CC 35 movl (rFP, %edx, 4), %eax # %eax<- vCC 36 movl 4(rFP, %edx, 4), %ecx # %ecx<- vCC+1 37 movl %eax, -8(%esp) # push arg vCC 38 or %ecx, %eax # check for divide by zero 39 je common_errDivideByZero # handle divide by zero 40 FETCH_BB 1, %edx # %edx<- BB 41 movl %ecx, -4(%esp) # push arg vCC+1 42 movq (rFP, %edx, 4), %xmm0 # %xmm0<- vBB,vBB+1 43 jmp .L${opcode}_finish 44 %break 45 .L${opcode}_finish: 46 movq %xmm0, -16(%esp) # push arg vBB,vBB+1 47 lea -16(%esp), %esp 48 call $func # call func 49 lea 16(%esp), %esp 50 movl %eax, (rFP, rINST, 4) # vAA<- return low 51 movl %edx, 4(rFP, rINST, 4) # vAA+1<- return high 52 FINISH 2 # jump to next instruction 53
