diff options
Diffstat (limited to 'vm/mterp/x86-atom/OP_CMPL_FLOAT.S')
| -rw-r--r-- | vm/mterp/x86-atom/OP_CMPL_FLOAT.S | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/vm/mterp/x86-atom/OP_CMPL_FLOAT.S b/vm/mterp/x86-atom/OP_CMPL_FLOAT.S new file mode 100644 index 0000000..5cb3ec7 --- /dev/null +++ b/vm/mterp/x86-atom/OP_CMPL_FLOAT.S @@ -0,0 +1,63 @@ + /* 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: OP_CMPL_FLOAT.S + * + * Code: Provides a "nan" variable to specify the return value for + * NaN. Provides a variable "sod" which appends a "s" or a "d" + * to the move and comparison instructions, depending on if we + * are working with a float or a double. For instructions + * cmpx-float and cmpx-double, the x will be eiher a g or a l + * to specify positive or negative bias for NaN. + * + * For: cmpg-double, dmpg-float, cmpl-double, cmpl-float + * + * Description: Perform the indicated floating point or long comparison, + * storing 0 if the two arguments are equal, 1 if the second + * argument is larger, or -1 if the first argument is larger. + * + * Format: AA|op CC|BB (23x) + * + * Syntax: op vAA, vBB, vCC + */ + +%default { "nan":"$0xFFFFFFFF" , "sod":"s" } + + FETCH_BB 1, %ecx # %ecx<- BB + FETCH_CC 1, %edx # %edx<- CC + FFETCH_ADV 2, %eax # %eax<- next instruction hi; fetch, advance + movs$sod (rFP, %ecx, 4), %xmm0 # %xmm0<- vBB + comis$sod (rFP, %edx, 4), %xmm0 # do comparison + ja .L${opcode}_greater + jp .L${opcode}_finalNan + jz .L${opcode}_final + +.L${opcode}_less: + movl $$0xFFFFFFFF, (rFP, rINST, 4) # vAA<- less than + FGETOP_JMP 2, %eax # jump to next instruction; getop, jmp + +%break +.L${opcode}_greater: + movl $$0x1, (rFP, rINST, 4) # vAA<- greater than + FGETOP_JMP 2, %eax # jump to next instruction; getop, jmp + +.L${opcode}_final: + movl $$0x0, (rFP, rINST, 4) # vAA<- equal + FGETOP_JMP 2, %eax # jump to next instruction; getop, jmp + +.L${opcode}_finalNan: + movl $nan, (rFP, rINST, 4) # vAA<- NaN + FGETOP_JMP 2, %eax # jump to next instruction; getop, jmp |