6ff0ba5f7b
The "source centric" /m option to the disassemble command is often unhelpful, e.g., in the presence of optimized code. This patch adds a /s modifier that is better. For one, /m only prints instructions from the originating source file, leaving out instructions from e.g., inlined functions from other files. gdb/ChangeLog: PR gdb/11833 * NEWS: Document new /s modifier for the disassemble command. * cli/cli-cmds.c (disassemble_command): Add support for /s. (_initialize_cli_cmds): Update online docs of disassemble command. * disasm.c: #include "source.h". (struct deprecated_dis_line_entry): Renamed from dis_line_entry. All uses updated. (dis_line_entry): New struct. (hash_dis_line_entry, eq_dis_line_entry): New functions. (allocate_dis_line_table): New functions. (maybe_add_dis_line_entry, line_has_code_p): New functions. (dump_insns): New arg end_pc. All callers updated. (do_mixed_source_and_assembly_deprecated): Renamed from do_mixed_source_and_assembly. All callers updated. (do_mixed_source_and_assembly): New function. (gdb_disassembly): Handle /s (DISASSEMBLY_SOURCE). * disasm.h (DISASSEMBLY_SOURCE_DEPRECATED): Renamed from DISASSEMBLY_SOURCE. All uses updated. (DISASSEMBLY_SOURCE): New macro. * mi/mi-cmd-disas.c (mi_cmd_disassemble): New modes 4,5. gdb/doc/ChangeLog: * gdb.texinfo (Machine Code): Update docs for mixed source/assembly disassembly. (GDB/MI Data Manipulation): Update docs for new disassembly modes. gdb/testsuite/ChangeLog: * gdb.mi/mi-disassemble.exp: Update. * gdb.base/disasm-optim.S: New file. * gdb.base/disasm-optim.c: New file. * gdb.base/disasm-optim.h: New file. * gdb.base/disasm-optim.exp: New file.
64 lines
2.2 KiB
C
64 lines
2.2 KiB
C
/* Disassemble support for GDB.
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Copyright (C) 2002-2015 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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#define DISASSEMBLY_SOURCE_DEPRECATED (0x1 << 0)
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#define DISASSEMBLY_RAW_INSN (0x1 << 1)
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#define DISASSEMBLY_OMIT_FNAME (0x1 << 2)
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#define DISASSEMBLY_FILENAME (0x1 << 3)
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#define DISASSEMBLY_OMIT_PC (0x1 << 4)
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#define DISASSEMBLY_SOURCE (0x1 << 5)
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struct gdbarch;
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struct ui_out;
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struct ui_file;
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/* Return a filled in disassemble_info object for use by gdb. */
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extern struct disassemble_info gdb_disassemble_info (struct gdbarch *gdbarch,
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struct ui_file *file);
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extern void gdb_disassembly (struct gdbarch *gdbarch, struct ui_out *uiout,
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char *file_string, int 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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/* 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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#endif
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