80ee4fd53b
From Momchil Velikov <velco@fadata.bg> * mi-cmd-disas.c (gdb_dis_asm_read_memory): Add missing memory attributes argument in the call to `xfer_memory'.
494 lines
14 KiB
C
494 lines
14 KiB
C
/* MI Command Set - disassemble commands.
|
|
Copyright (C) 2000, 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 2 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, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#include "defs.h"
|
|
#include "target.h"
|
|
#include "value.h"
|
|
#include "mi-cmds.h"
|
|
#include "mi-getopt.h"
|
|
#include "ui-out.h"
|
|
|
|
static int gdb_dis_asm_read_memory (bfd_vma memaddr, bfd_byte * myaddr, unsigned int len,
|
|
disassemble_info * info);
|
|
static int compare_lines (const PTR mle1p, const PTR mle2p);
|
|
|
|
/* Disassemble functions. FIXME: these do not really belong here. We
|
|
should get rid of all the duplicate code in gdb that does the same
|
|
thing: disassemble_command() and the gdbtk variation. */
|
|
|
|
/* This Structure is used in mi_cmd_disassemble.
|
|
We need a different sort of line table from the normal one cuz we can't
|
|
depend upon implicit line-end pc's for lines to do the
|
|
reordering in this function. */
|
|
|
|
struct dis_line_entry
|
|
{
|
|
int line;
|
|
CORE_ADDR start_pc;
|
|
CORE_ADDR end_pc;
|
|
};
|
|
|
|
/* This variable determines where memory used for disassembly is read from. */
|
|
int gdb_disassemble_from_exec = -1;
|
|
|
|
/* This is the memory_read_func for gdb_disassemble when we are
|
|
disassembling from the exec file. */
|
|
static int
|
|
gdb_dis_asm_read_memory (bfd_vma memaddr, bfd_byte * myaddr,
|
|
unsigned int len, disassemble_info * info)
|
|
{
|
|
extern struct target_ops exec_ops;
|
|
int res;
|
|
|
|
errno = 0;
|
|
res = xfer_memory (memaddr, myaddr, len, 0, 0, &exec_ops);
|
|
|
|
if (res == len)
|
|
return 0;
|
|
else if (errno == 0)
|
|
return EIO;
|
|
else
|
|
return errno;
|
|
}
|
|
|
|
static int
|
|
compare_lines (const PTR mle1p, const PTR mle2p)
|
|
{
|
|
struct dis_line_entry *mle1, *mle2;
|
|
int val;
|
|
|
|
mle1 = (struct dis_line_entry *) mle1p;
|
|
mle2 = (struct dis_line_entry *) mle2p;
|
|
|
|
val = mle1->line - mle2->line;
|
|
|
|
if (val != 0)
|
|
return val;
|
|
|
|
return mle1->start_pc - mle2->start_pc;
|
|
}
|
|
|
|
/* 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 contins that line.
|
|
HOW_MANY: Number of disassembly lines to display. In mixed mode, it
|
|
is the number of disassembly lines only, not counting the source
|
|
lines.
|
|
|
|
always required:
|
|
|
|
MODE: 0 or 1 for disassembly only, or mixed source and disassembly,
|
|
respectively. */
|
|
|
|
enum mi_cmd_result
|
|
mi_cmd_disassemble (char *command, char **argv, int argc)
|
|
{
|
|
CORE_ADDR pc;
|
|
CORE_ADDR start;
|
|
CORE_ADDR low = 0;
|
|
CORE_ADDR high = 0;
|
|
|
|
int how_many = -1;
|
|
int mixed_source_and_assembly;
|
|
int num_displayed;
|
|
int line_num;
|
|
|
|
char *file_string;
|
|
static disassemble_info di;
|
|
static int di_initialized;
|
|
|
|
struct symtab *s;
|
|
|
|
/* To collect the instruction outputted from opcodes. */
|
|
static struct ui_stream *stb = NULL;
|
|
|
|
/* parts of the symbolic representation of the address */
|
|
int line;
|
|
int offset;
|
|
int unmapped;
|
|
char *filename = NULL;
|
|
char *name = NULL;
|
|
|
|
/* Which options have we processed? */
|
|
int file_seen = 0;
|
|
int line_seen = 0;
|
|
int num_seen = 0;
|
|
int start_seen = 0;
|
|
int end_seen = 0;
|
|
|
|
/* Options processing stuff. */
|
|
int optind = 0;
|
|
char *optarg;
|
|
enum opt
|
|
{
|
|
FILE_OPT, LINE_OPT, NUM_OPT, START_OPT, END_OPT
|
|
};
|
|
static struct mi_opt opts[] =
|
|
{
|
|
{"f", FILE_OPT, 1},
|
|
{"l", LINE_OPT, 1},
|
|
{"n", NUM_OPT, 1},
|
|
{"s", START_OPT, 1},
|
|
{"e", END_OPT, 1},
|
|
0
|
|
};
|
|
|
|
/* Get the options with their arguments. Keep track of what we
|
|
encountered. */
|
|
while (1)
|
|
{
|
|
int opt = mi_getopt ("mi_cmd_disassemble", argc, argv, opts,
|
|
&optind, &optarg);
|
|
if (opt < 0)
|
|
break;
|
|
switch ((enum opt) opt)
|
|
{
|
|
case FILE_OPT:
|
|
file_string = xstrdup (optarg);
|
|
file_seen = 1;
|
|
break;
|
|
case LINE_OPT:
|
|
line_num = atoi (optarg);
|
|
line_seen = 1;
|
|
break;
|
|
case NUM_OPT:
|
|
how_many = atoi (optarg);
|
|
num_seen = 1;
|
|
break;
|
|
case START_OPT:
|
|
low = parse_and_eval_address (optarg);
|
|
start_seen = 1;
|
|
break;
|
|
case END_OPT:
|
|
high = parse_and_eval_address (optarg);
|
|
end_seen = 1;
|
|
break;
|
|
}
|
|
}
|
|
argv += optind;
|
|
argc -= optind;
|
|
|
|
/* Allow only filename + linenum (with how_many which is not
|
|
required) OR start_addr + and_addr */
|
|
|
|
if (!((line_seen && file_seen && num_seen && !start_seen && !end_seen)
|
|
|| (line_seen && file_seen && !num_seen && !start_seen && !end_seen)
|
|
|| (!line_seen && !file_seen && !num_seen && start_seen && end_seen)))
|
|
error ("mi_cmd_disassemble: Usage: ( [-f filename -l linenum [-n howmany]] | [-s startaddr -e endaddr]) [--] mixed_mode.");
|
|
|
|
if (argc != 1)
|
|
error ("mi_cmd_disassemble: Usage: [-f filename -l linenum [-n howmany]] [-s startaddr -e endaddr] [--] mixed_mode.");
|
|
|
|
mixed_source_and_assembly = atoi (argv[0]);
|
|
if ((mixed_source_and_assembly != 0) && (mixed_source_and_assembly != 1))
|
|
error ("mi_cmd_disassemble: Mixed_mode argument must be 0 or 1.");
|
|
|
|
/* 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 ("mi_cmd_disassemble: Invalid filename.");
|
|
if (!find_line_pc (s, line_num, &start))
|
|
error ("mi_cmd_disassemble: Invalid line number");
|
|
if (find_pc_partial_function (start, NULL, &low, &high) == 0)
|
|
error ("mi_cmd_disassemble: No function contains specified address");
|
|
}
|
|
|
|
if (!di_initialized)
|
|
{
|
|
/* We don't add a cleanup for this, because the allocation of
|
|
the stream is done once only for each gdb run, and we need to
|
|
keep it around until the end. Hopefully there won't be any
|
|
errors in the init code below, that make this function bail
|
|
out. */
|
|
stb = ui_out_stream_new (uiout);
|
|
INIT_DISASSEMBLE_INFO_NO_ARCH (di, stb->stream,
|
|
(fprintf_ftype) fprintf_unfiltered);
|
|
di.flavour = bfd_target_unknown_flavour;
|
|
di.memory_error_func = dis_asm_memory_error;
|
|
di.print_address_func = dis_asm_print_address;
|
|
di_initialized = 1;
|
|
}
|
|
|
|
di.mach = TARGET_PRINT_INSN_INFO->mach;
|
|
if (TARGET_BYTE_ORDER == BIG_ENDIAN)
|
|
di.endian = BFD_ENDIAN_BIG;
|
|
else
|
|
di.endian = BFD_ENDIAN_LITTLE;
|
|
|
|
/* If gdb_disassemble_from_exec == -1, then we use the following heuristic to
|
|
determine whether or not to do disassembly from target memory or from the
|
|
exec file:
|
|
|
|
If we're debugging a local process, read target memory, instead of the
|
|
exec file. This makes disassembly of functions in shared libs work
|
|
correctly. Also, read target memory if we are debugging native threads.
|
|
|
|
Else, we're debugging a remote process, and should disassemble from the
|
|
exec file for speed. However, this is no good if the target modifies its
|
|
code (for relocation, or whatever).
|
|
*/
|
|
|
|
if (gdb_disassemble_from_exec == -1)
|
|
{
|
|
if (strcmp (target_shortname, "child") == 0
|
|
|| strcmp (target_shortname, "procfs") == 0
|
|
|| strcmp (target_shortname, "vxprocess") == 0
|
|
|| strstr (target_shortname, "-threads") != NULL)
|
|
gdb_disassemble_from_exec = 0; /* It's a child process, read inferior mem */
|
|
else
|
|
gdb_disassemble_from_exec = 1; /* It's remote, read the exec file */
|
|
}
|
|
|
|
if (gdb_disassemble_from_exec)
|
|
di.read_memory_func = gdb_dis_asm_read_memory;
|
|
else
|
|
di.read_memory_func = dis_asm_read_memory;
|
|
|
|
/* If just doing straight assembly, all we need to do is disassemble
|
|
everything between low and high. If doing mixed source/assembly,
|
|
we've got a totally different path to follow. */
|
|
|
|
if (mixed_source_and_assembly)
|
|
{
|
|
/* Come here for mixed source/assembly */
|
|
/* The idea here is to present a source-O-centric view of a
|
|
function to the user. This means that things are presented
|
|
in source order, with (possibly) out of order assembly
|
|
immediately following. */
|
|
struct symtab *symtab;
|
|
struct linetable_entry *le;
|
|
int nlines;
|
|
int newlines;
|
|
struct dis_line_entry *mle;
|
|
struct symtab_and_line sal;
|
|
int i;
|
|
int out_of_order;
|
|
int next_line;
|
|
|
|
/* Assume symtab is valid for whole PC range */
|
|
symtab = find_pc_symtab (low);
|
|
|
|
if (!symtab || !symtab->linetable)
|
|
goto assembly_only;
|
|
|
|
/* First, convert the linetable to a bunch of my_line_entry's. */
|
|
|
|
le = symtab->linetable->item;
|
|
nlines = symtab->linetable->nitems;
|
|
|
|
if (nlines <= 0)
|
|
goto assembly_only;
|
|
|
|
mle = (struct dis_line_entry *) alloca (nlines * sizeof (struct dis_line_entry));
|
|
|
|
out_of_order = 0;
|
|
|
|
/* Copy linetable entries for this function into our data
|
|
structure, creating end_pc's and setting out_of_order as
|
|
appropriate. */
|
|
|
|
/* First, skip all the preceding functions. */
|
|
|
|
for (i = 0; i < nlines - 1 && le[i].pc < low; i++);
|
|
|
|
/* Now, copy all entries before the end of this function. */
|
|
|
|
newlines = 0;
|
|
for (; i < nlines - 1 && le[i].pc < high; i++)
|
|
{
|
|
if (le[i].line == le[i + 1].line
|
|
&& le[i].pc == le[i + 1].pc)
|
|
continue; /* Ignore duplicates */
|
|
|
|
mle[newlines].line = le[i].line;
|
|
if (le[i].line > le[i + 1].line)
|
|
out_of_order = 1;
|
|
mle[newlines].start_pc = le[i].pc;
|
|
mle[newlines].end_pc = le[i + 1].pc;
|
|
newlines++;
|
|
}
|
|
|
|
/* If we're on the last line, and it's part of the function,
|
|
then we need to get the end pc in a special way. */
|
|
|
|
if (i == nlines - 1
|
|
&& le[i].pc < high)
|
|
{
|
|
mle[newlines].line = le[i].line;
|
|
mle[newlines].start_pc = le[i].pc;
|
|
sal = find_pc_line (le[i].pc, 0);
|
|
mle[newlines].end_pc = sal.end;
|
|
newlines++;
|
|
}
|
|
|
|
/* Now, sort mle by line #s (and, then by addresses within
|
|
lines). */
|
|
|
|
if (out_of_order)
|
|
qsort (mle, newlines, sizeof (struct dis_line_entry), compare_lines);
|
|
|
|
/* Now, for each line entry, emit the specified lines (unless
|
|
they have been emitted before), followed by the assembly code
|
|
for that line. */
|
|
|
|
next_line = 0; /* Force out first line */
|
|
ui_out_list_begin (uiout, "asm_insns");
|
|
num_displayed = 0;
|
|
for (i = 0; i < newlines; i++)
|
|
{
|
|
int close_list = 1;
|
|
/* Print out everything from next_line to the current line. */
|
|
if (mle[i].line >= next_line)
|
|
{
|
|
if (next_line != 0)
|
|
{
|
|
/* Just one line to print. */
|
|
if (next_line == mle[i].line)
|
|
{
|
|
ui_out_list_begin (uiout, "src_and_asm_line");
|
|
print_source_lines (symtab, next_line, mle[i].line + 1, 0);
|
|
}
|
|
else
|
|
{
|
|
/* Several source lines w/o asm instructions associated. */
|
|
for (; next_line < mle[i].line; next_line++)
|
|
{
|
|
ui_out_list_begin (uiout, "src_and_asm_line");
|
|
print_source_lines (symtab, next_line, mle[i].line + 1, 0);
|
|
ui_out_list_begin (uiout, "line_asm_insn");
|
|
ui_out_list_end (uiout);
|
|
ui_out_list_end (uiout);
|
|
}
|
|
/* Print the last line and leave list open for
|
|
asm instructions to be added. */
|
|
ui_out_list_begin (uiout, "src_and_asm_line");
|
|
print_source_lines (symtab, next_line, mle[i].line + 1, 0);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
ui_out_list_begin (uiout, "src_and_asm_line");
|
|
print_source_lines (symtab, mle[i].line, mle[i].line + 1, 0);
|
|
}
|
|
|
|
next_line = mle[i].line + 1;
|
|
ui_out_list_begin (uiout, "line_asm_insn");
|
|
if (i + 1 < newlines && mle[i + 1].line <= mle[i].line)
|
|
close_list = 0;
|
|
}
|
|
for (pc = mle[i].start_pc; pc < mle[i].end_pc;)
|
|
{
|
|
QUIT;
|
|
if (how_many >= 0)
|
|
{
|
|
if (num_displayed >= how_many)
|
|
break;
|
|
else
|
|
num_displayed++;
|
|
}
|
|
ui_out_list_begin (uiout, NULL);
|
|
ui_out_field_core_addr (uiout, "address", pc);
|
|
|
|
if (!build_address_symbolic (pc, 0, &name, &offset, &filename, &line, &unmapped))
|
|
{
|
|
/* We don't care now about line, filename and
|
|
unmapped, but we might in the future. */
|
|
ui_out_field_string (uiout, "func-name", name);
|
|
ui_out_field_int (uiout, "offset", offset);
|
|
}
|
|
if (filename != NULL)
|
|
xfree (filename);
|
|
if (name != NULL)
|
|
xfree (name);
|
|
|
|
ui_file_rewind (stb->stream);
|
|
pc += (*tm_print_insn) (pc, &di);
|
|
ui_out_field_stream (uiout, "inst", stb);
|
|
ui_file_rewind (stb->stream);
|
|
ui_out_list_end (uiout);
|
|
}
|
|
if (close_list)
|
|
{
|
|
ui_out_list_end (uiout);
|
|
ui_out_list_end (uiout);
|
|
close_list = 0;
|
|
}
|
|
if (how_many >= 0)
|
|
if (num_displayed >= how_many)
|
|
break;
|
|
}
|
|
ui_out_list_end (uiout);
|
|
}
|
|
else
|
|
{
|
|
assembly_only:
|
|
ui_out_list_begin (uiout, "asm_insns");
|
|
num_displayed = 0;
|
|
for (pc = low; pc < high;)
|
|
{
|
|
QUIT;
|
|
if (how_many >= 0)
|
|
{
|
|
if (num_displayed >= how_many)
|
|
break;
|
|
else
|
|
num_displayed++;
|
|
}
|
|
ui_out_list_begin (uiout, NULL);
|
|
ui_out_field_core_addr (uiout, "address", pc);
|
|
|
|
if (!build_address_symbolic (pc, 0, &name, &offset, &filename, &line, &unmapped))
|
|
{
|
|
/* We don't care now about line, filename and
|
|
unmapped. But we might in the future. */
|
|
ui_out_field_string (uiout, "func-name", name);
|
|
ui_out_field_int (uiout, "offset", offset);
|
|
}
|
|
if (filename != NULL)
|
|
xfree (filename);
|
|
if (name != NULL)
|
|
xfree (name);
|
|
|
|
ui_file_rewind (stb->stream);
|
|
pc += (*tm_print_insn) (pc, &di);
|
|
ui_out_field_stream (uiout, "inst", stb);
|
|
ui_file_rewind (stb->stream);
|
|
ui_out_list_end (uiout);
|
|
}
|
|
ui_out_list_end (uiout);
|
|
}
|
|
gdb_flush (gdb_stdout);
|
|
|
|
return MI_CMD_DONE;
|
|
}
|