1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
use libc;
use types::{ud, ud_operand};
use itab::ud_mnemonic_code;
extern "C" {
/// Initializes an instance.
pub fn ud_init(ud: *mut ud);
/// Sets the mode of disassembly. Possible values are 16, 32, and 64. By
/// default, the library works in 32bit mode.
pub fn ud_set_mode(ud: *mut ud, mode: u8);
/// Sets the program counter (IP/EIP/RIP). This changes the offset of the
/// assembly output generated, with direct effect on branch instructions.
pub fn ud_set_pc(ud: *mut ud, program_counter: u64);
/// Sets a pointer to a function, to callback for input. The callback is
/// invoked each time libudis86 needs the next byte in the input stream. To
/// single end-of-input, this callback must return the constant UD_EOI.
pub fn ud_set_input_hook(ud: *mut ud, callback: ::std::option::Option<unsafe extern "C" fn(ud: *mut ud) -> libc::c_int>);
/// Sets the input source for the library to a buffer of size bytes.
pub fn ud_set_input_buffer(ud: *mut ud, data: *const u8, len: usize);
/// Sets the input source to a file pointed to by a given standard library
/// FILE pointer. Note that libudis86 does not perform any checks, and
/// assumes that the file pointer is properly initialized and open for
/// reading.
pub fn ud_set_input_file(ud: *mut ud, file: *mut libc::FILE);
/// Sets the vendor of whose instruction to choose from. This is only useful
/// for selecting the VMX or SVM instruction sets at which point INTEL and
/// AMD have diverged significantly. At a later stage, support for a more
/// granular selection of instruction sets maybe added.
///
/// - UD_VENDOR_INTEL - for INTEL instruction set.
/// - UD_VENDOR_ATT - for AMD instruction set.
/// - UD_VENDOR_ANY - for any valid instruction in either INTEL or AMD.
pub fn ud_set_vendor(ud: *mut ud, vendor: libc::c_uint);
/// Sets the function that translates the intermediate decode information to
/// a human readable form. There are two inbuilt translators,
///
/// - `ud_translate_intel` for INTEL (NASM-like) syntax.
/// - `ud_translate_att` for AT&T (GAS-like) syntax.
///
/// If you do not want libudis86 to translate, you can pass NULL to the
/// function, with no more translations thereafter. This is useful when you
/// only want to identify chunks of code and then create the assembly output
/// if needed, or when you are only interested in examining the instructions
/// and do not want to waste cycles generating the assembly language output.
///
/// If you want to create your own translator, you can specify a pointer to
/// your own function. This function must accept a single parameter, the
/// udis86 object ud_t, and it will be invoked everytime an instruction is
/// decoded.
pub fn ud_set_syntax(ud: *mut ud, translator: ::std::option::Option<unsafe extern "C" fn(arg1: *mut ud)>);
/// Skips ahead n number of bytes in the input stream.
pub fn ud_input_skip(ud: *mut ud, skipn: usize);
/// Test for end of input. You can use this function to test if udis86 has
/// exhausted the input.
pub fn ud_input_end(ud: *const ud) -> libc::c_int;
/// Returns the number of bytes decoded.
pub fn ud_decode(ud: *mut ud) -> libc::c_uint;
/// Disassembles the next instruction in the input stream.
/// Returns the number of bytes disassembled. A 0 indicates end of input.
/// Note, to restart disassembly after the end of input, you must call one
/// of the input setting functions with a new source of input.
///
/// A common use-case pattern for this function is in a loop:
///
/// ```norun
/// while ud_disassemble(&mut object) > 0 {
/// // Use or print decode info.
/// }
/// ```
pub fn ud_disassemble(ud: *mut ud) -> libc::c_uint;
/// Translator for the Intel syntax.
pub fn ud_translate_intel(ud: *mut ud);
/// Translator for the AT&T syntax.
pub fn ud_translate_att(ud: *mut ud);
/// If the syntax is specified, returns pointer to the character string
/// holding assembly language representation of the disassembled
/// instruction.
pub fn ud_insn_asm(ud: *const ud) -> *const libc::c_char;
/// Returns pointer to the buffer holding the instruction bytes. Use
/// `ud_insn_len` to determine the size of this buffer.
pub fn ud_insn_ptr(ud: *const ud) -> *const u8;
/// Returns the offset of the disassembled instruction in terms of the
/// program counter value specified initially.
pub fn ud_insn_off(ud: *const ud) -> u64;
/// Returns pointer to a character string holding the hexadecimal
/// representation of the disassembled bytes.
pub fn ud_insn_hex(ud: *mut ud) -> *const libc::c_char;
/// Returns the number of bytes disassembled.
pub fn ud_insn_len(ud: *const ud) -> libc::c_uint;
/// Returns a reference (`ud_operand`) to the nth (starting with 0) operand
/// of the instruction. If the instruction does not have such an operand,
/// the function returns `null`.
pub fn ud_insn_opr(ud: *const ud, n: libc::c_uint) -> *const ud_operand;
/// Returns true if the operand uses a segment register.
pub fn ud_opr_is_sreg(opr: *const ud_operand) -> libc::c_int;
/// Returns true if the operand uses a general purpose register.
pub fn ud_opr_is_gpr(opr: *const ud_operand) -> libc::c_int;
/// Returns the instruction mnemonic in the form of an enumerated constant
/// (`ud_mnemonic_code`). As a convention all mnemonic constants are
/// composed by prefixing standard instruction mnemonics with `UD_I`. For
/// example, the enumerations for mov, xor and jmp are `UD_Imov`, `UD_Ixor`,
/// and `UD_Ijmp`, respectively.
pub fn ud_insn_mnemonic(ud: *const ud) -> ud_mnemonic_code;
/// Returns a pointer to a character string corresponding to the given
/// mnemonic code. Returns a `null` if the code is invalid.
pub fn ud_lookup_mnemonic(code: ud_mnemonic_code) -> *const libc::c_char;
/// Associates a pointer with the udis86 object to be retrieved and used in
/// client functions, such as the input hook callback function.
pub fn ud_set_user_opaque_data(ud: *mut ud, data: *mut libc::c_void);
/// Returns any pointer associated with the udis86 object, using the
/// `ud_set_user_opaque_data` function.
pub fn ud_get_user_opaque_data(ud: *const ud) -> *mut libc::c_void;
/// Sets a custom assembler output buffer.
pub fn ud_set_asm_buffer(ud: *mut ud, data: *mut libc::c_char, len: usize);
/// Sets a symbol resolver for relative targets used in the translation
/// phase.
///
/// The resolver is a function that takes a `u64` address and returns a
/// symbolic name for the that address. The function also takes a second
/// argument pointing to an integer that the client can optionally set to a
/// non-zero value for offsetted targets. (symbol + offset) The function may
/// also return `null`, in which case the translator only prints the target
/// address.
///
/// The function pointer maybe `null` which resets symbol resolution.
pub fn ud_set_sym_resolver(ud: *mut ud, resolver: ::std::option::Option<unsafe extern "C" fn(ud: *mut ud, addr: u64, offset: *mut i64) -> *const libc::c_char>);
}