160 lines
4.8 KiB
C++
160 lines
4.8 KiB
C++
/* Disassemble support for GDB.
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Copyright (C) 2002-2018 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef DISASM_H
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#define DISASM_H
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#include "dis-asm.h"
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#include "common/enum-flags.h"
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enum gdb_disassembly_flag
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{
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DISASSEMBLY_SOURCE_DEPRECATED = (0x1 << 0),
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DISASSEMBLY_RAW_INSN = (0x1 << 1),
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DISASSEMBLY_OMIT_FNAME = (0x1 << 2),
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DISASSEMBLY_FILENAME = (0x1 << 3),
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DISASSEMBLY_OMIT_PC = (0x1 << 4),
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DISASSEMBLY_SOURCE = (0x1 << 5),
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DISASSEMBLY_SPECULATIVE = (0x1 << 6),
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};
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DEF_ENUM_FLAGS_TYPE (enum gdb_disassembly_flag, gdb_disassembly_flags);
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struct gdbarch;
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struct ui_out;
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struct ui_file;
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class gdb_disassembler
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{
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using di_read_memory_ftype = decltype (disassemble_info::read_memory_func);
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public:
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gdb_disassembler (struct gdbarch *gdbarch, struct ui_file *file)
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: gdb_disassembler (gdbarch, file, dis_asm_read_memory)
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{}
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int print_insn (CORE_ADDR memaddr, int *branch_delay_insns = NULL);
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/* Return the gdbarch of gdb_disassembler. */
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struct gdbarch *arch ()
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{ return m_gdbarch; }
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protected:
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gdb_disassembler (struct gdbarch *gdbarch, struct ui_file *file,
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di_read_memory_ftype func);
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struct ui_file *stream ()
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{ return (struct ui_file *) m_di.stream; }
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private:
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struct gdbarch *m_gdbarch;
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/* Stores data required for disassembling instructions in
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opcodes. */
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struct disassemble_info m_di;
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/* If we own the string in `m_di.disassembler_options', we do so
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using this field. */
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std::string m_disassembler_options_holder;
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CORE_ADDR m_err_memaddr;
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static int dis_asm_read_memory (bfd_vma memaddr, gdb_byte *myaddr,
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unsigned int len,
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struct disassemble_info *info);
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static void dis_asm_memory_error (int err, bfd_vma memaddr,
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struct disassemble_info *info);
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static void dis_asm_print_address (bfd_vma addr,
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struct disassemble_info *info);
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};
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/* An instruction to be disassembled. */
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struct disasm_insn
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{
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/* The address of the memory containing the instruction. */
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CORE_ADDR addr;
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/* An optional instruction number. If non-zero, it is printed first. */
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unsigned int number;
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/* True if the instruction was executed speculatively. */
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unsigned int is_speculative:1;
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};
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extern void gdb_disassembly (struct gdbarch *gdbarch, struct ui_out *uiout,
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gdb_disassembly_flags flags, int how_many,
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CORE_ADDR low, CORE_ADDR high);
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/* Print the instruction at address MEMADDR in debugged memory,
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on STREAM. Returns the length of the instruction, in bytes,
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and, if requested, the number of branch delay slot instructions. */
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extern int gdb_print_insn (struct gdbarch *gdbarch, CORE_ADDR memaddr,
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struct ui_file *stream, int *branch_delay_insns);
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/* Class used to pretty-print instructions. */
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class gdb_pretty_print_disassembler
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{
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public:
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explicit gdb_pretty_print_disassembler (struct gdbarch *gdbarch)
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: m_di (gdbarch, &m_insn_stb)
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{}
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/* Prints the instruction INSN into UIOUT and returns the length of
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the printed instruction in bytes. */
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int pretty_print_insn (struct ui_out *uiout, const struct disasm_insn *insn,
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gdb_disassembly_flags flags);
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private:
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/* Returns the architecture used for disassembling. */
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struct gdbarch *arch () { return m_di.arch (); }
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/* The disassembler used for instruction printing. */
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gdb_disassembler m_di;
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/* The buffer used to build the instruction string. The
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disassembler is initialized with this stream. */
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string_file m_insn_stb;
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/* The buffer used to build the raw opcodes string. */
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string_file m_opcode_stb;
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};
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/* Return the length in bytes of the instruction at address MEMADDR in
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debugged memory. */
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extern int gdb_insn_length (struct gdbarch *gdbarch, CORE_ADDR memaddr);
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/* Return the length in bytes of INSN, originally at MEMADDR. MAX_LEN
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is the size of the buffer containing INSN. */
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extern int gdb_buffered_insn_length (struct gdbarch *gdbarch,
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const gdb_byte *insn, int max_len,
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CORE_ADDR memaddr);
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/* Returns GDBARCH's disassembler options. */
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extern char *get_disassembler_options (struct gdbarch *gdbarch);
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/* Sets the active gdbarch's disassembler options to OPTIONS. */
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extern void set_disassembler_options (char *options);
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#endif
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