1 /* Disassemble support for GDB.
2 Copyright (C) 2002-2017 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>. */
24 #define DISASSEMBLY_SOURCE_DEPRECATED (0x1 << 0)
25 #define DISASSEMBLY_RAW_INSN (0x1 << 1)
26 #define DISASSEMBLY_OMIT_FNAME (0x1 << 2)
27 #define DISASSEMBLY_FILENAME (0x1 << 3)
28 #define DISASSEMBLY_OMIT_PC (0x1 << 4)
29 #define DISASSEMBLY_SOURCE (0x1 << 5)
30 #define DISASSEMBLY_SPECULATIVE (0x1 << 6)
36 class gdb_disassembler
38 using di_read_memory_ftype = decltype (disassemble_info::read_memory_func);
41 gdb_disassembler (struct gdbarch *gdbarch, struct ui_file *file)
42 : gdb_disassembler (gdbarch, file, dis_asm_read_memory)
45 int print_insn (CORE_ADDR memaddr, int *branch_delay_insns = NULL);
47 /* Return the gdbarch of gdb_disassembler. */
48 struct gdbarch *arch ()
52 gdb_disassembler (struct gdbarch *gdbarch, struct ui_file *file,
53 di_read_memory_ftype func);
55 struct ui_file *stream ()
56 { return (struct ui_file *) m_di.stream; }
59 struct gdbarch *m_gdbarch;
61 /* Stores data required for disassembling instructions in
63 struct disassemble_info m_di;
64 CORE_ADDR m_err_memaddr;
66 static int dis_asm_read_memory (bfd_vma memaddr, gdb_byte *myaddr,
68 struct disassemble_info *info);
69 static void dis_asm_memory_error (int err, bfd_vma memaddr,
70 struct disassemble_info *info);
71 static void dis_asm_print_address (bfd_vma addr,
72 struct disassemble_info *info);
75 /* An instruction to be disassembled. */
79 /* The address of the memory containing the instruction. */
82 /* An optional instruction number. If non-zero, it is printed first. */
85 /* True if the instruction was executed speculatively. */
86 unsigned int is_speculative:1;
89 extern void gdb_disassembly (struct gdbarch *gdbarch, struct ui_out *uiout,
90 int flags, int how_many,
91 CORE_ADDR low, CORE_ADDR high);
93 /* Print the instruction at address MEMADDR in debugged memory,
94 on STREAM. Returns the length of the instruction, in bytes,
95 and, if requested, the number of branch delay slot instructions. */
97 extern int gdb_print_insn (struct gdbarch *gdbarch, CORE_ADDR memaddr,
98 struct ui_file *stream, int *branch_delay_insns);
100 /* Class used to pretty-print instructions. */
102 class gdb_pretty_print_disassembler
105 explicit gdb_pretty_print_disassembler (struct gdbarch *gdbarch)
106 : m_di (gdbarch, &m_insn_stb)
109 /* Prints the instruction INSN into UIOUT and returns the length of
110 the printed instruction in bytes. */
111 int pretty_print_insn (struct ui_out *uiout, const struct disasm_insn *insn,
115 /* Returns the architecture used for disassembling. */
116 struct gdbarch *arch () { return m_di.arch (); }
118 /* The disassembler used for instruction printing. */
119 gdb_disassembler m_di;
121 /* The buffer used to build the instruction string. The
122 disassembler is initialized with this stream. */
123 string_file m_insn_stb;
125 /* The buffer used to build the raw opcodes string. */
126 string_file m_opcode_stb;
129 /* Return the length in bytes of the instruction at address MEMADDR in
132 extern int gdb_insn_length (struct gdbarch *gdbarch, CORE_ADDR memaddr);
134 /* Return the length in bytes of INSN, originally at MEMADDR. MAX_LEN
135 is the size of the buffer containing INSN. */
137 extern int gdb_buffered_insn_length (struct gdbarch *gdbarch,
138 const gdb_byte *insn, int max_len,
141 /* Returns GDBARCH's disassembler options. */
143 extern char *get_disassembler_options (struct gdbarch *gdbarch);
145 /* Sets the active gdbarch's disassembler options to OPTIONS. */
147 extern void set_disassembler_options (char *options);