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: OP_CMPL_FLOAT.S 18 * 19 * Code: Provides a "nan" variable to specify the return value for 20 * NaN. Provides a variable "sod" which appends a "s" or a "d" 21 * to the move and comparison instructions, depending on if we 22 * are working with a float or a double. For instructions 23 * cmpx-float and cmpx-double, the x will be eiher a g or a l 24 * to specify positive or negative bias for NaN. 25 * 26 * For: cmpg-double, dmpg-float, cmpl-double, cmpl-float 27 * 28 * Description: Perform the indicated floating point or long comparison, 29 * storing 0 if the two arguments are equal, 1 if the second 30 * argument is larger, or -1 if the first argument is larger. 31 * 32 * Format: AA|op CC|BB (23x) 33 * 34 * Syntax: op vAA, vBB, vCC 35 */ 36 37 %default { "nan":"$0xFFFFFFFF" , "sod":"s" } 38 39 FETCH_BB 1, %ecx # %ecx<- BB 40 FETCH_CC 1, %edx # %edx<- CC 41 FFETCH_ADV 2, %eax # %eax<- next instruction hi; fetch, advance 42 movs$sod (rFP, %ecx, 4), %xmm0 # %xmm0<- vBB 43 comis$sod (rFP, %edx, 4), %xmm0 # do comparison 44 ja .L${opcode}_greater 45 jp .L${opcode}_finalNan 46 jz .L${opcode}_final 47 48 .L${opcode}_less: 49 movl $$0xFFFFFFFF, (rFP, rINST, 4) # vAA<- less than 50 FGETOP_JMP 2, %eax # jump to next instruction; getop, jmp 51 52 %break 53 .L${opcode}_greater: 54 movl $$0x1, (rFP, rINST, 4) # vAA<- greater than 55 FGETOP_JMP 2, %eax # jump to next instruction; getop, jmp 56 57 .L${opcode}_final: 58 movl $$0x0, (rFP, rINST, 4) # vAA<- equal 59 FGETOP_JMP 2, %eax # jump to next instruction; getop, jmp 60 61 .L${opcode}_finalNan: 62 movl $nan, (rFP, rINST, 4) # vAA<- NaN 63 FGETOP_JMP 2, %eax # jump to next instruction; getop, jmp 64
