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: binopDivRemLong2Addr.S 18 * 19 * Code: 64-bit "/2addr" long divide operation. Variable 20 * "func" defines the function called to do the operation. 21 * 22 * For: div-long/2addr, rem-long/2addr 23 * 24 * Description: Perform a binary operation on two sources registers 25 * and store the result in the first source register. 26 * 27 * Format: B|A|op (12x) 28 * 29 * Syntax: op vA, vB 30 */ 31 32 %default {"func":"__divdi3"} 33 34 movl rINST, %edx # %edx<- BA 35 shr $$4, %edx # %edx<- B 36 and $$15, rINST # rINST<- A 37 movl (rFP, %edx, 4), %eax # %eax<- vB 38 movl %eax, -12(%esp) # push arg vB 39 movl 4(rFP, %edx, 4), %ecx # %ecx<- vB+1 40 or %ecx, %eax # check for divide by zero 41 je common_errDivideByZero # handle divide by zero 42 movl %ecx, -8(%esp) # push arg vB+1 43 movq (rFP, rINST, 4), %xmm0 # %xmm0<- vA,vA+1 44 jmp .L${opcode}_break 45 %break 46 .L${opcode}_break: 47 movq %xmm0, -20(%esp) # push arg vA, vA+1 48 lea -20(%esp), %esp 49 call $func # call func 50 lea 20(%esp), %esp 51 movl %eax, (rFP, rINST, 4) # vA<- return low 52 movl %edx, 4(rFP, rINST, 4) # vA<- return high 53 FFETCH_ADV 1, %ecx # %ecx<- next instruction hi; fetch, advance 54 FGETOP_JMP 1, %ecx # jump to next instruction; getop, jmp 55
