diff options
Diffstat (limited to 'runtime/interpreter/mterp/cfi_asm_support.h')
| -rw-r--r-- | runtime/interpreter/mterp/cfi_asm_support.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/runtime/interpreter/mterp/cfi_asm_support.h b/runtime/interpreter/mterp/cfi_asm_support.h new file mode 100644 index 00000000000..a97e153993b --- /dev/null +++ b/runtime/interpreter/mterp/cfi_asm_support.h @@ -0,0 +1,31 @@ +/* + * Copyright (C) 2017 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. + */ + +#ifndef ART_RUNTIME_INTERPRETER_MTERP_CFI_ASM_SUPPORT_H_ +#define ART_RUNTIME_INTERPRETER_MTERP_CFI_ASM_SUPPORT_H_ + +/* + * To keep track of the Dalvik PC, give assign it a magic register number that + * won't be confused with a pysical register. Then, standard .cfi directives + * will track the location of it so that it may be extracted during a stack + * unwind. + * + * The Dalvik PC will be in either a physical registor, or the frame. + * Encoded from the ASCII string " DEX" -> 0x20 0x44 0x45 0x58 + */ +#define DPC_PSEUDO_REG 0x20444558 + +#endif // ART_RUNTIME_INTERPRETER_MTERP_CFI_ASM_SUPPORT_H_ |