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| 1 /* | |
| 2 * Copyright (c) 2012 The Native Client Authors. All rights reserved. | |
| 3 * Use of this source code is governed by a BSD-style license that can be | |
| 4 * found in the LICENSE file. | |
| 5 */ | |
| 6 | |
| 7 /* | |
| 8 * Defines the user API to the state associated with matching instructions. | |
| 9 */ | |
| 10 | |
| 11 #ifndef NATIVE_CLIENT_SRC_TRUSTED_VALIDATOR_X86_DECODER_NC_INST_STATE_H_ | |
| 12 #define NATIVE_CLIENT_SRC_TRUSTED_VALIDATOR_X86_DECODER_NC_INST_STATE_H_ | |
| 13 | |
| 14 #include "native_client/src/include/portability.h" | |
| 15 #include "native_client/src/shared/utils/types.h" | |
| 16 #include "native_client/src/trusted/validator/types_memory_model.h" | |
| 17 | |
| 18 EXTERN_C_BEGIN | |
| 19 | |
| 20 /* The meta model of an x86 opcode instruction. */ | |
| 21 struct NaClInst; | |
| 22 | |
| 23 /* The (user) representation of the parsed x86 instruction. */ | |
| 24 struct NaClExpVector; | |
| 25 | |
| 26 /* Defines the state used to match an instruction, while walking | |
| 27 * instructions using the NaClInstIter. | |
| 28 */ | |
| 29 typedef struct NaClInstState NaClInstState; | |
| 30 | |
| 31 struct NaClInst; | |
| 32 | |
| 33 /* Returns the address (i.e. program counter) associated with the currently | |
| 34 * matched instruction, assuming the code segment has been mapped to vbase. | |
| 35 * This value should not be used to influence validation because it would make | |
| 36 * the validation algorithm position dependent. | |
| 37 */ | |
| 38 NaClPcAddress NaClInstStatePrintableAddress(NaClInstState* state); | |
| 39 | |
| 40 /* Given an iterator state, return the corresponding opcode (instruction) | |
| 41 * that matches the currently matched instruction of the corresponding | |
| 42 * instruction iterator. | |
| 43 */ | |
| 44 const struct NaClInst* NaClInstStateInst(NaClInstState* state); | |
| 45 | |
| 46 /* Given an iterator state, return the corresponding expression tree | |
| 47 * denoting the currently matched instruction of the corresponding | |
| 48 * instruction iterator. | |
| 49 */ | |
| 50 struct NaClExpVector* NaClInstStateExpVector(NaClInstState* state); | |
| 51 | |
| 52 /* Returns true if the instruction defined by the given state could | |
| 53 * be decoded into a valid instruction. | |
| 54 */ | |
| 55 Bool NaClInstStateIsValid(NaClInstState* state); | |
| 56 | |
| 57 /* Given an iterator state, return the number of bytes matched | |
| 58 * by the currently matched instruction of the corresponding | |
| 59 * instruction iterator. | |
| 60 */ | |
| 61 uint8_t NaClInstStateLength(NaClInstState* state); | |
| 62 | |
| 63 /* Given an iterator state, return the index-th byte of the | |
| 64 * currently matched instruction. Index must be less than | |
| 65 * the value of the corresponding call to NaClInstStateLength. | |
| 66 */ | |
| 67 uint8_t NaClInstStateByte(NaClInstState* state, uint8_t index); | |
| 68 | |
| 69 /* Returns the operand size (measured in bytes) of the instruction state. */ | |
| 70 uint8_t NaClInstStateOperandSize(NaClInstState* state); | |
| 71 | |
| 72 /* Returns the address size (measured in bits) of the instruction state. */ | |
| 73 uint8_t NaClInstStateAddressSize(NaClInstState* state); | |
| 74 | |
| 75 EXTERN_C_END | |
| 76 | |
| 77 #endif /* NATIVE_CLIENT_SRC_TRUSTED_VALIDATOR_X86_DECODER_NC_INST_STATE_H_ */ | |
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Chromium Code Reviews
Issue 625923004:
Delete old x86 validator. (Closed)
Base URL: svn://svn.chromium.org/native_client/trunk/src/native_client