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authorAndrew Cagney <cagney@redhat.com>2000-02-23 00:25:43 +0000
committerAndrew Cagney <cagney@redhat.com>2000-02-23 00:25:43 +0000
commitfb40c20903110ed8af9701ce7c2635abd3770d52 (patch)
tree9f99a85a7d64fa61cfa9a167e006e2f747716d42 /gdb/mi/mi-cmd-disas.c
parente6c6b6fe2d24c8be4909c7e3c0dd1a937819ffe9 (diff)
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Add mi/ and testsuite/gdb.mi/ subdirectories.
Add --enable-gdbmi option to configury. Add mi rules to Makefile.in Add mi conditional output to event-top.c infrun.c main.c top.c. Add -i=mi option.
Diffstat (limited to 'gdb/mi/mi-cmd-disas.c')
-rw-r--r--gdb/mi/mi-cmd-disas.c499
1 files changed, 499 insertions, 0 deletions
diff --git a/gdb/mi/mi-cmd-disas.c b/gdb/mi/mi-cmd-disas.c
new file mode 100644
index 0000000..9bbc9ef
--- /dev/null
+++ b/gdb/mi/mi-cmd-disas.c
@@ -0,0 +1,499 @@
+/* MI Command Set - disassemble commands.
+ Copyright (C) 2000, Free Software Foundation, Inc.
+ Contributed by Cygnus Solutions.
+
+ 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, 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, int len, disassemble_info * info)
+{
+ extern struct target_ops exec_ops;
+ int res;
+
+ errno = 0;
+ res = xfer_memory (memaddr, myaddr, len, 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);
+ print_address_numeric (pc, 1, stb->stream);
+ ui_out_field_stream (uiout, "address", stb);
+
+ 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)
+ free (filename);
+ if (name != NULL)
+ free (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);
+ print_address_numeric (pc, 1, stb->stream);
+ ui_out_field_stream (uiout, "address", stb);
+
+ 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)
+ free (filename);
+ if (name != NULL)
+ free (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;
+}
+
+/* Local variables: */
+/* change-log-default-name: "ChangeLog-mi" */
+/* End: */