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/* MI Command Set - disassemble commands.
Copyright (C) 2000-2022 Free Software Foundation, Inc.
Contributed by Cygnus Solutions (a Red Hat company).
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "arch-utils.h"
#include "target.h"
#include "value.h"
#include "mi-cmds.h"
#include "mi-getopt.h"
#include "ui-out.h"
#include "disasm.h"
/* The arguments to be passed on the command line and parsed here are
either:
START-ADDRESS: address to start the disassembly at.
END-ADDRESS: address to end the disassembly at.
or:
FILENAME: The name of the file where we want disassemble from.
LINE: The line around which we want to disassemble. It will
disassemble the function that contains that line.
HOW_MANY: Number of disassembly lines to display. With source, it
is the number of disassembly lines only, not counting the source
lines.
always required:
MODE: 0 -- disassembly.
1 -- disassembly and source (with deprecated source-centric view).
2 -- disassembly and opcodes.
3 -- disassembly, source-centric and opcodes.
4 -- disassembly, and source (with pc-centric view).
5 -- disassembly, source (pc-centric) and opcodes. */
void
mi_cmd_disassemble (const char *command, char **argv, int argc)
{
struct gdbarch *gdbarch = get_current_arch ();
struct ui_out *uiout = current_uiout;
CORE_ADDR start;
int mode;
gdb_disassembly_flags disasm_flags;
struct symtab *s;
/* Which options have we processed ... */
bool file_seen = false;
bool line_seen = false;
bool num_seen = false;
bool start_seen = false;
bool end_seen = false;
bool addr_seen = false;
bool opcodes_seen = false;
bool source_seen = false;
/* ... and their corresponding value. */
char *file_string = NULL;
int line_num = -1;
int how_many = -1;
CORE_ADDR low = 0;
CORE_ADDR high = 0;
CORE_ADDR addr = 0;
/* Flags to handle the --opcodes option. */
enum opcodes_mode
{
OPCODES_DEFAULT, OPCODES_NONE, OPCODES_DISPLAY, OPCODES_BYTES
};
enum opcodes_mode opcodes_mode = OPCODES_DEFAULT;
/* Handle the -source option. */
bool show_source = false;
/* Options processing stuff. */
int oind = 0;
char *oarg;
enum opt
{
FILE_OPT, LINE_OPT, NUM_OPT, START_OPT, END_OPT, ADDR_OPT, OPCODES_OPT,
SHOW_SRC_OPT
};
static const struct mi_opt opts[] =
{
{"f", FILE_OPT, 1},
{"l", LINE_OPT, 1},
{"n", NUM_OPT, 1},
{"s", START_OPT, 1},
{"e", END_OPT, 1},
{"a", ADDR_OPT, 1},
{"-opcodes", OPCODES_OPT, 1},
{"-source", SHOW_SRC_OPT, 0},
{ 0, 0, 0 }
};
/* Get the options with their arguments. Keep track of what we
encountered. */
while (1)
{
int opt = mi_getopt ("-data-disassemble", argc, argv, opts,
&oind, &oarg);
if (opt < 0)
break;
switch ((enum opt) opt)
{
case FILE_OPT:
file_string = oarg;
file_seen = true;
break;
case LINE_OPT:
line_num = atoi (oarg);
line_seen = true;
break;
case NUM_OPT:
how_many = atoi (oarg);
num_seen = true;
break;
case START_OPT:
low = parse_and_eval_address (oarg);
start_seen = true;
break;
case END_OPT:
high = parse_and_eval_address (oarg);
end_seen = true;
break;
case ADDR_OPT:
addr = parse_and_eval_address (oarg);
addr_seen = true;
break;
case OPCODES_OPT:
opcodes_seen = true;
if (strcmp (oarg, "none") == 0)
opcodes_mode = OPCODES_NONE;
else if (strcmp (oarg, "display") == 0)
opcodes_mode = OPCODES_DISPLAY;
else if (strcmp (oarg, "bytes") == 0)
opcodes_mode = OPCODES_BYTES;
else
error (_("-data-disassemble: unknown value for -opcodes argument"));
break;
case SHOW_SRC_OPT:
source_seen = true;
show_source = true;
break;
}
}
argv += oind;
argc -= oind;
/* Allow only filename + linenum (with how_many which is not
required) OR start_addr + end_addr OR addr. */
if (!(
( line_seen && file_seen && !start_seen && !end_seen
&& !addr_seen)
|| (!line_seen && !file_seen && !num_seen && start_seen && end_seen
&& !addr_seen)
|| (!line_seen && !file_seen && !num_seen && !start_seen && !end_seen
&& addr_seen))
|| argc > 1)
error (_("-data-disassemble: Usage: "
"( -f filename -l linenum [-n howmany] |"
" -s startaddr -e endaddr | -a addr ) "
"[ --opcodes mode ] [ --source ] [ [--] mode ]."));
if (argc == 1)
{
mode = atoi (argv[0]);
if (mode < 0 || mode > 5)
error (_("-data-disassemble: Mode argument must be in the range 0-5."));
}
else
mode = 0;
if (mode != 0 && (source_seen || opcodes_seen))
error (_("-data-disassemble: --opcodes and --source can only be used with mode 0"));
/* Convert the mode into a set of disassembly flags. */
disasm_flags = 0; /* Initialize here for -Wall. */
switch (mode)
{
case 0:
break;
case 1:
disasm_flags |= DISASSEMBLY_SOURCE_DEPRECATED;
break;
case 2:
disasm_flags |= DISASSEMBLY_RAW_BYTES;
break;
case 3:
disasm_flags |= DISASSEMBLY_SOURCE_DEPRECATED | DISASSEMBLY_RAW_BYTES;
break;
case 4:
disasm_flags |= DISASSEMBLY_SOURCE;
break;
case 5:
disasm_flags |= DISASSEMBLY_SOURCE | DISASSEMBLY_RAW_BYTES;
break;
default:
gdb_assert_not_reached ("bad disassembly mode");
}
/* Now handle the (optional) --opcodes argument. This partially
overrides the mode value. */
if (opcodes_mode != OPCODES_DEFAULT)
{
/* Remove any existing flags related to opcodes display. */
disasm_flags &= ~(DISASSEMBLY_RAW_BYTES | DISASSEMBLY_RAW_INSN);
/* Add back any required flags. */
if (opcodes_mode == OPCODES_DISPLAY)
disasm_flags |= DISASSEMBLY_RAW_INSN;
else if (opcodes_mode == OPCODES_BYTES)
disasm_flags |= DISASSEMBLY_RAW_BYTES;
}
/* Handle the optional --source argument. */
if (show_source)
{
disasm_flags &= ~DISASSEMBLY_SOURCE_DEPRECATED;
disasm_flags |= DISASSEMBLY_SOURCE;
}
/* We must get the function beginning and end where line_num is
contained. */
if (line_seen && file_seen)
{
s = lookup_symtab (file_string);
if (s == NULL)
error (_("-data-disassemble: Invalid filename."));
if (!find_line_pc (s, line_num, &start))
error (_("-data-disassemble: Invalid line number"));
if (find_pc_partial_function (start, NULL, &low, &high) == 0)
error (_("-data-disassemble: "
"No function contains specified address"));
}
else if (addr_seen)
{
if (find_pc_partial_function (addr, NULL, &low, &high) == 0)
error (_("-data-disassemble: "
"No function contains specified address"));
}
gdb_disassembly (gdbarch, uiout,
disasm_flags,
how_many, low, high);
}
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