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: bincmp.S 18 * 19 * Code: Generic 32-bit comparison operation. Provides a "revcmp" 20 * variable to specify the reverse comparison to perform. 21 * 22 * For: if-eq, if-ge, if-gt, if-le, if-lt, if-ne 23 * 24 * Description: Branch to the given destination if the comparison 25 * test between the given registers values is true. 26 * 27 * Format: B|A|op CCCC (22t) 28 * 29 * Syntax: op vA, vB, +CCCC 30 */ 31 32 movl rINST, %eax # %eax<- BA 33 andl $$15, rINST # rINST<- A 34 shr $$4, %eax # %eax<- B 35 GET_VREG rINST # rINST<- vA 36 movl $$4, %edx # %edx<- 4 37 cmp (rFP, %eax, 4), rINST # compare vA and vB 38 j${revcmp} 1f # goto next instruction if reverse 39 # comparison is true 40 FETCHs 1, %edx # %edx<- +CCCC, Branch offset 41 sal $$1, %edx 42 js common_periodicChecks_backwardBranch 43 1: 44 FINISH_RB %edx, %ecx # jump to next instruction 45
