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Diffstat (limited to 'vm/mterp/x86-atom/unop.S')
-rw-r--r-- | vm/mterp/x86-atom/unop.S | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/vm/mterp/x86-atom/unop.S b/vm/mterp/x86-atom/unop.S new file mode 100644 index 0000000..00f9f8d --- /dev/null +++ b/vm/mterp/x86-atom/unop.S @@ -0,0 +1,43 @@ + /* 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: unop.S + * + * Code: Generic 32-bit unary operation. Provide an "instr" variable and a + * preinstr variable that together specify an instruction that + * performs, for example, "%ecx = op %edx". + * + * For: int-to-byte, int-to-char, int-to-short, neg-float, neg-int, not-int + * + * Description: Perform the identified unary operation on the source + * register, storing the result in the destination register + * + * Format: B|A|op (12x) + * + * Syntax: op vA, vB + */ + +%default {"preinstr":"", "instr":""} + + movl rINST, %ecx # %ecx<- BA+ + shr $$4, %ecx # %ecx<- B + and $$15, rINST # rINST<- A + FFETCH_ADV 1, %eax # %eax<- next instruction hi; fetch, advance + GET_VREG %ecx # %ecx<- vB + $preinstr # do operation part 1 + $instr # do operation part 2 + SET_VREG %ecx, rINST # vA<- result + FGETOP_JMP 1, %eax # jump to next instruction; getop, jmp |