| /* 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_PACKED_SWITCH.S |
| * |
| * Code: Jump to a new instruction using a jump table |
| * |
| * For: packed-switch, sparse-switch |
| * |
| * Description: Jump to a new instruction based on the value in the given |
| * register, using a table of offsets corresponding to each |
| * value in a particular integral range, or fall through to |
| * the next instruction if there is no match. |
| * |
| * Format: AA|op BBBBlo BBBBhi (31t) |
| * |
| * Syntax: op vAA, +BBBBBBBB |
| */ |
| |
| %default { "func":"dvmInterpHandlePackedSwitch" } |
| |
| FETCH 1, %ecx # %ecx<- BBBBlo |
| FETCH 2, %edx # %edx<- BBBBhi |
| shl $$16, %edx # prepare to create +BBBBBBBB |
| or %edx, %ecx # %ecx<- +BBBBBBBB |
| GET_VREG rINST # rINST<- vAA |
| movl rINST, -4(%esp) # push parameter vAA |
| lea (rPC, %ecx, 2), %ecx # %ecx<- PC + +BBBBBBBB*2 |
| movl %ecx, -8(%esp) # push parameter PC + +BBBBBBBB*2 |
| lea -8(%esp), %esp |
| call $func # call code-unit branch offset |
| shl $$1, %eax # shift for byte offset |
| movl %eax, %edx # %edx<- offset |
| lea 8(%esp), %esp |
| jle common_periodicChecks_backwardBranch # do backward branch |
| jmp .L${opcode}_finish |
| %break |
| .L${opcode}_finish: |
| FINISH_RB %edx, %ecx # jump to next instruction |
