diff options
Diffstat (limited to 'vm/mterp/x86-atom/binopS2addr.S')
-rw-r--r-- | vm/mterp/x86-atom/binopS2addr.S | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/vm/mterp/x86-atom/binopS2addr.S b/vm/mterp/x86-atom/binopS2addr.S new file mode 100644 index 0000000..0c3c29a --- /dev/null +++ b/vm/mterp/x86-atom/binopS2addr.S @@ -0,0 +1,42 @@ + /* 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: binopS2addr.S + * + * Code: Generic 32-bit "/2addr" binary operation. Provides an + * "instr" line to specify an instruction that performs + * "%edx = %edx op %cl". + * + * For: shl-int/2addr, shr-int/2addr, ushr-int/2addr + * + * Description: Perform a binary operation on two sources registers + * and store the result in the first source register + * + * Format: B|A|op (12x) + * + * Syntax: op vA, vB + */ + + movl rINST, %ecx # %ecx<- BA + shr $$4, %ecx # %ecx<- B + andl $$15, rINST # rINST<- A + movl rINST, %edx # %edx<- A + FFETCH_ADV 1, %eax # %ecx<- next instruction hi; fetch, advance + GET_VREG %ecx # %ecx<- vB + GET_VREG %edx # %edx<- vA + $instr # %edx<- vA op vB + SET_VREG %edx, rINST # vAA<- %edx; result + FGETOP_JMP 1, %eax # jump to next instruction; getop, jmp |