-/* Print values for GNU debugger gdb.
- Copyright (C) 1986, 1987 Free Software Foundation, Inc.
-
-GDB is distributed in the hope that it will be useful, but WITHOUT ANY
-WARRANTY. No author or distributor accepts responsibility to anyone
-for the consequences of using it or for whether it serves any
-particular purpose or works at all, unless he says so in writing.
-Refer to the GDB General Public License for full details.
-
-Everyone is granted permission to copy, modify and redistribute GDB,
-but only under the conditions described in the GDB General Public
-License. A copy of this license is supposed to have been given to you
-along with GDB so you can know your rights and responsibilities. It
-should be in a file named COPYING. Among other things, the copyright
-notice and this notice must be preserved on all copies.
-
-In other words, go ahead and share GDB, but don't try to stop
-anyone else from sharing it farther. Help stamp out software hoarding!
-*/
-
-#include <stdio.h>
+/* Print values for GNU debugger GDB.
+ Copyright 1986, 1987, 1988, 1989, 1990, 1991 Free Software Foundation, Inc.
+
+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., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
#include "defs.h"
-#include "initialize.h"
-#include "param.h"
+#include <string.h>
+#include "frame.h"
#include "symtab.h"
+#include "gdbtypes.h"
#include "value.h"
+#include "language.h"
#include "expression.h"
+#include "gdbcore.h"
+#include "gdbcmd.h"
+#include "target.h"
+#include "breakpoint.h"
+#include "demangle.h"
+
+/* These are just for containing_function_bounds. It might be better
+ to move containing_function_bounds to blockframe.c or thereabouts. */
+#include "bfd.h"
+#include "symfile.h"
+#include "objfiles.h"
+
+extern int asm_demangle; /* Whether to demangle syms in asm printouts */
+extern int addressprint; /* Whether to print hex addresses in HLL " */
struct format_data
{
static value last_examine_value;
-void do_displays ();
-void print_address ();
+/* Largest offset between a symbolic value and an address, that will be
+ printed as `0x1234 <symbol+offset>'. */
+
+static unsigned int max_symbolic_offset = UINT_MAX;
+
+/* Number of auto-display expression currently being displayed.
+ So that we can disable it if we get an error or a signal within it.
+ -1 when not doing one. */
+
+int current_display_number;
+
+/* Flag to low-level print routines that this value is being printed
+ in an epoch window. We'd like to pass this as a parameter, but
+ every routine would need to take it. Perhaps we can encapsulate
+ this in the I/O stream once we have GNU stdio. */
+
+int inspect_it = 0;
+
+struct display
+{
+ /* Chain link to next auto-display item. */
+ struct display *next;
+ /* Expression to be evaluated and displayed. */
+ struct expression *exp;
+ /* Item number of this auto-display item. */
+ int number;
+ /* Display format specified. */
+ struct format_data format;
+ /* Innermost block required by this expression when evaluated */
+ struct block *block;
+ /* Status of this display (enabled or disabled) */
+ enum enable status;
+};
+
+/* Chain of expressions whose values should be displayed
+ automatically each time the program stops. */
+
+static struct display *display_chain;
+
+static int display_number;
+
+/* Prototypes for local functions */
+
+static void
+delete_display PARAMS ((int));
+
+static void
+enable_display PARAMS ((char *, int));
+
+static void
+disable_display_command PARAMS ((char *, int));
+
+static void
+disassemble_command PARAMS ((char *, int));
+
+static int
+containing_function_bounds PARAMS ((CORE_ADDR, CORE_ADDR *, CORE_ADDR *));
+
+static void
+printf_command PARAMS ((char *, int));
+
+static void
+print_frame_nameless_args PARAMS ((struct frame_info *, long, int, int,
+ FILE *));
+
+static void
+display_info PARAMS ((char *, int));
+
+static void
+do_one_display PARAMS ((struct display *));
+
+static void
+undisplay_command PARAMS ((char *, int));
+
+static void
+free_display PARAMS ((struct display *));
+
+static void
+display_command PARAMS ((char *, int));
+
+static void
+x_command PARAMS ((char *, int));
+
+static void
+address_info PARAMS ((char *, int));
+
+static void
+set_command PARAMS ((char *, int));
+
+static void
+output_command PARAMS ((char *, int));
+
+static void
+call_command PARAMS ((char *, int));
+
+static void
+inspect_command PARAMS ((char *, int));
+
+static void
+print_command PARAMS ((char *, int));
+
+static void
+print_command_1 PARAMS ((char *, int, int));
+
+static void
+validate_format PARAMS ((struct format_data, char *));
+
+static void
+do_examine PARAMS ((struct format_data, CORE_ADDR));
+
+static void
+print_formatted PARAMS ((value, int, int));
+
+static struct format_data
+decode_format PARAMS ((char **, int, int));
-START_FILE
\f
/* Decode a format specification. *STRING_PTR should point to it.
OFORMAT and OSIZE are used as defaults for the format and size
if none are given in the format specification.
+ If OSIZE is zero, then the size field of the returned value
+ should be set only if a size is explicitly specified by the
+ user.
The structure returned describes all the data
found in the specification. In addition, *STRING_PTR is advanced
past the specification and past all whitespace following it. */
-struct format_data
+static struct format_data
decode_format (string_ptr, oformat, osize)
char **string_ptr;
- char oformat;
- char osize;
+ int oformat;
+ int osize;
{
struct format_data val;
register char *p = *string_ptr;
- val.format = oformat;
- val.size = osize;
+ val.format = '?';
+ val.size = '?';
val.count = 1;
if (*p >= '0' && *p <= '9')
{
if (*p == 'b' || *p == 'h' || *p == 'w' || *p == 'g')
val.size = *p++;
+#ifdef CC_HAS_LONG_LONG
+ else if (*p == 'l')
+ {
+ val.size = 'g';
+ p++;
+ }
+#endif
else if (*p >= 'a' && *p <= 'z')
val.format = *p++;
else
break;
}
+#ifndef CC_HAS_LONG_LONG
+ /* Make sure 'g' size is not used on integer types.
+ Well, actually, we can handle hex. */
+ if (val.size == 'g' && val.format != 'f' && val.format != 'x')
+ val.size = 'w';
+#endif
+
while (*p == ' ' || *p == '\t') p++;
*string_ptr = p;
+ /* Set defaults for format and size if not specified. */
+ if (val.format == '?')
+ {
+ if (val.size == '?')
+ {
+ /* Neither has been specified. */
+ val.format = oformat;
+ val.size = osize;
+ }
+ else
+ /* If a size is specified, any format makes a reasonable
+ default except 'i'. */
+ val.format = oformat == 'i' ? 'x' : oformat;
+ }
+ else if (val.size == '?')
+ switch (val.format)
+ {
+ case 'a':
+ case 's':
+ /* Addresses must be words. */
+ val.size = osize ? 'w' : osize;
+ break;
+ case 'f':
+ /* Floating point has to be word or giantword. */
+ if (osize == 'w' || osize == 'g')
+ val.size = osize;
+ else
+ /* Default it to giantword if the last used size is not
+ appropriate. */
+ val.size = osize ? 'g' : osize;
+ break;
+ case 'c':
+ /* Characters default to one byte. */
+ val.size = osize ? 'b' : osize;
+ break;
+ default:
+ /* The default is the size most recently specified. */
+ val.size = osize;
+ }
+
return val;
}
\f
/* Print value VAL on stdout according to FORMAT, a letter or 0.
Do not end with a newline.
- 0 means print VAL according to its own type. */
+ 0 means print VAL according to its own type.
+ SIZE is the letter for the size of datum being printed.
+ This is used to pad hex numbers so they line up. */
static void
-print_formatted (val, format)
+print_formatted (val, format, size)
register value val;
- register char format;
+ register int format;
+ int size;
{
- register CORE_ADDR val_long;
int len = TYPE_LENGTH (VALUE_TYPE (val));
if (VALUE_LVAL (val) == lval_memory)
next_address = VALUE_ADDRESS (val) + len;
- if (format && format != 's')
- {
- val_long = value_as_long (val);
-
- /* If value is unsigned, truncate it in case negative. */
- if (format != 'd')
- {
- if (len == sizeof (char))
- val_long &= (1 << 8 * sizeof(char)) - 1;
- else if (len == sizeof (short))
- val_long &= (1 << 8 * sizeof(short)) - 1;
- }
- }
-
switch (format)
{
case 's':
next_address = VALUE_ADDRESS (val)
- + value_print (value_addr (val), stdout);
+ + value_print (value_addr (val), stdout, format, Val_pretty_default);
break;
case 'i':
+ /* The old comment says
+ "Force output out, print_insn not using _filtered".
+ I'm not completely sure what that means, I suspect most print_insn
+ now do use _filtered, so I guess it's obsolete. */
+ /* We often wrap here if there are long symbolic names. */
+ wrap_here ("\t");
next_address = VALUE_ADDRESS (val)
+ print_insn (VALUE_ADDRESS (val), stdout);
break;
+ default:
+ if (format == 0
+ || TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_ARRAY
+ || TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_STRING
+ || TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_STRUCT
+ || TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_UNION
+ || VALUE_REPEATED (val))
+ value_print (val, stdout, format, Val_pretty_default);
+ else
+ print_scalar_formatted (VALUE_CONTENTS (val), VALUE_TYPE (val),
+ format, size, stdout);
+ }
+}
+
+/* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR,
+ according to letters FORMAT and SIZE on STREAM.
+ FORMAT may not be zero. Formats s and i are not supported at this level.
+
+ This is how the elements of an array or structure are printed
+ with a format. */
+
+void
+print_scalar_formatted (valaddr, type, format, size, stream)
+ char *valaddr;
+ struct type *type;
+ int format;
+ int size;
+ FILE *stream;
+{
+ LONGEST val_long;
+ int len = TYPE_LENGTH (type);
+
+ if (size == 'g' && sizeof (LONGEST) < 8
+ && format == 'x')
+ {
+ /* ok, we're going to have to get fancy here. Assumption: a
+ long is four bytes. FIXME. */
+ unsigned long v1, v2;
+
+ v1 = unpack_long (builtin_type_long, valaddr);
+ v2 = unpack_long (builtin_type_long, valaddr + 4);
+
+#if TARGET_BYTE_ORDER == LITTLE_ENDIAN
+ /* Swap the two for printing */
+ {
+ unsigned long tmp;
+
+ tmp = v1;
+ v1 = v2;
+ v2 = tmp;
+ }
+#endif
+
+ switch (format)
+ {
+ case 'x':
+ fprintf_filtered (stream, local_hex_format_custom("08x%08"), v1, v2);
+ break;
+ default:
+ error ("Output size \"g\" unimplemented for format \"%c\".",
+ format);
+ }
+ return;
+ }
+
+ val_long = unpack_long (type, valaddr);
+
+ /* If value is unsigned, truncate it in case negative. */
+ if (format != 'd')
+ {
+ if (len == sizeof (char))
+ val_long &= (1 << 8 * sizeof(char)) - 1;
+ else if (len == sizeof (short))
+ val_long &= (1 << 8 * sizeof(short)) - 1;
+ else if (len == sizeof (long))
+ val_long &= (unsigned long) - 1;
+ }
+
+ switch (format)
+ {
case 'x':
- printf ("0x%x", val_long);
+ if (!size)
+ {
+ /* no size specified, like in print. Print varying # of digits. */
+ print_longest (stream, 'x', 1, val_long);
+ }
+ else
+ switch (size)
+ {
+ case 'b':
+ case 'h':
+ case 'w':
+ case 'g':
+ print_longest (stream, size, 1, val_long);
+ break;
+ default:
+ error ("Undefined output size \"%c\".", size);
+ }
break;
case 'd':
- printf ("%d", val_long);
+ print_longest (stream, 'd', 1, val_long);
break;
case 'u':
- printf ("%u", val_long);
+ print_longest (stream, 'u', 0, val_long);
break;
case 'o':
if (val_long)
- printf ("0%o", val_long);
+ print_longest (stream, 'o', 1, val_long);
else
- printf ("0");
+ fprintf_filtered (stream, "0");
break;
case 'a':
- print_address (val_long, stdout);
+ print_address (unpack_pointer (type, valaddr), stream);
break;
case 'c':
- value_print (value_cast (builtin_type_char, val), stdout);
+ value_print (value_from_longest (builtin_type_char, val_long), stream, 0,
+ Val_pretty_default);
break;
case 'f':
- if (TYPE_LENGTH (VALUE_TYPE (val)) == sizeof (float))
- VALUE_TYPE (val) = builtin_type_float;
- if (TYPE_LENGTH (VALUE_TYPE (val)) == sizeof (double))
- VALUE_TYPE (val) = builtin_type_double;
-#ifdef IEEE_FLOAT
- if (is_nan (value_as_double (val)))
- {
- printf ("Nan");
- break;
- }
-#endif
- printf ("%g", value_as_double (val));
+ if (len == sizeof (float))
+ type = builtin_type_float;
+ else if (len == sizeof (double))
+ type = builtin_type_double;
+ print_floating (valaddr, type, stream);
break;
case 0:
- value_print (val, stdout);
+ abort ();
+
+ case 't':
+ /* Binary; 't' stands for "two". */
+ {
+ char bits[8*(sizeof val_long) + 1];
+ char *cp = bits;
+ int width;
+
+ if (!size)
+ width = 8*(sizeof val_long);
+ else
+ switch (size)
+ {
+ case 'b':
+ width = 8;
+ break;
+ case 'h':
+ width = 16;
+ break;
+ case 'w':
+ width = 32;
+ break;
+ case 'g':
+ width = 64;
+ break;
+ default:
+ error ("Undefined output size \"%c\".", size);
+ }
+
+ bits[width] = '\0';
+ while (width-- > 0)
+ {
+ bits[width] = (val_long & 1) ? '1' : '0';
+ val_long >>= 1;
+ }
+ if (!size)
+ {
+ while (*cp && *cp == '0')
+ cp++;
+ if (*cp == '\0')
+ cp--;
+ }
+ fprintf_filtered (stream, local_binary_format_prefix());
+ fprintf_filtered (stream, cp);
+ fprintf_filtered (stream, local_binary_format_suffix());
+ }
break;
default:
/* Make address available to the user as $_. */
set_internalvar (lookup_internalvar ("_"),
- value_from_long (builtin_type_int, addr));
+ value_from_longest (lookup_pointer_type (builtin_type_void),
+ (LONGEST) addr));
+}
+
+/* Optionally print address ADDR symbolically as <SYMBOL+OFFSET> on STREAM,
+ after LEADIN. Print nothing if no symbolic name is found nearby.
+ DO_DEMANGLE controls whether to print a symbol in its native "raw" form,
+ or to interpret it as a possible C++ name and convert it back to source
+ form. However note that DO_DEMANGLE can be overridden by the specific
+ settings of the demangle and asm_demangle variables. */
+
+void
+print_address_symbolic (addr, stream, do_demangle, leadin)
+ CORE_ADDR addr;
+ FILE *stream;
+ int do_demangle;
+ char *leadin;
+{
+ CORE_ADDR name_location;
+ register struct symbol *symbol;
+ char *name;
+
+ /* First try to find the address in the symbol tables to find
+ static functions. If that doesn't succeed we try the minimal symbol
+ vector for symbols in non-text space.
+ FIXME: Should find a way to get at the static non-text symbols too. */
+
+ symbol = find_pc_function (addr);
+ if (symbol)
+ {
+ name_location = BLOCK_START (SYMBOL_BLOCK_VALUE (symbol));
+ if (do_demangle)
+ name = SYMBOL_SOURCE_NAME (symbol);
+ else
+ name = SYMBOL_LINKAGE_NAME (symbol);
+ }
+ else
+ {
+ register struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (addr);
+
+ /* If nothing comes out, don't print anything symbolic. */
+ if (msymbol == NULL)
+ return;
+ name_location = SYMBOL_VALUE_ADDRESS (msymbol);
+ if (do_demangle)
+ name = SYMBOL_SOURCE_NAME (msymbol);
+ else
+ name = SYMBOL_LINKAGE_NAME (msymbol);
+ }
+
+ /* If the nearest symbol is too far away, don't print anything symbolic. */
+
+ /* For when CORE_ADDR is larger than unsigned int, we do math in
+ CORE_ADDR. But when we detect unsigned wraparound in the
+ CORE_ADDR math, we ignore this test and print the offset,
+ because addr+max_symbolic_offset has wrapped through the end
+ of the address space back to the beginning, giving bogus comparison. */
+ if (addr > name_location + max_symbolic_offset
+ && name_location + max_symbolic_offset > name_location)
+ return;
+
+ fputs_filtered (leadin, stream);
+ fputs_filtered ("<", stream);
+ fputs_filtered (name, stream);
+ if (addr != name_location)
+ fprintf_filtered (stream, "+%u>", (unsigned int)(addr - name_location));
+ else
+ fputs_filtered (">", stream);
}
/* Print address ADDR symbolically on STREAM.
CORE_ADDR addr;
FILE *stream;
{
- register int i;
-
- fprintf (stream, "0x%x", addr);
+#ifdef ADDR_BITS_REMOVE
+ fprintf_filtered (stream, local_hex_format(), ADDR_BITS_REMOVE(addr));
+#else
+ fprintf_filtered (stream, local_hex_format(), addr);
+#endif
+ print_address_symbolic (addr, stream, asm_demangle, " ");
+}
- i = find_pc_misc_function (addr);
- if (i >= 0)
- if (misc_function_vector[i].address != addr)
- fprintf (stream, " <%s+%d>",
- misc_function_vector[i].name,
- addr - misc_function_vector[i].address);
- else
- fprintf (stream, " <%s>", misc_function_vector[i].name);
+/* Print address ADDR symbolically on STREAM. Parameter DEMANGLE
+ controls whether to print the symbolic name "raw" or demangled.
+ Global setting "addressprint" controls whether to print hex address
+ or not. */
+void
+print_address_demangle (addr, stream, do_demangle)
+ CORE_ADDR addr;
+ FILE *stream;
+ int do_demangle;
+{
+ if (addr == 0) {
+ fprintf_filtered (stream, "0");
+ } else if (addressprint) {
+ fprintf_filtered (stream, local_hex_format(), addr);
+ print_address_symbolic (addr, stream, do_demangle, " ");
+ } else {
+ print_address_symbolic (addr, stream, do_demangle, "");
+ }
}
\f
+
/* Examine data at address ADDR in format FMT.
Fetch it from memory and print on stdout. */
else if (size == 'w')
val_type = builtin_type_long;
else if (size == 'g')
+#ifndef CC_HAS_LONG_LONG
val_type = builtin_type_double;
+#else
+ val_type = builtin_type_long_long;
+#endif
maxelts = 8;
if (size == 'w')
while (count > 0)
{
print_address (next_address, stdout);
+ printf_filtered (":");
for (i = maxelts;
i > 0 && count > 0;
i--, count--)
{
- fputc ('\t', stdout);
- /* Note that this sets next_address for the next object. */
+ printf_filtered ("\t");
+ /* Note that print_formatted sets next_address for the next
+ object. */
last_examine_address = next_address;
last_examine_value = value_at (val_type, next_address);
- print_formatted (last_examine_value, format);
+ print_formatted (last_examine_value, format, size);
}
- fputc ('\n', stdout);
+ printf_filtered ("\n");
fflush (stdout);
}
}
fmt.format, cmdname);
}
+/* Evaluate string EXP as an expression in the current language and
+ print the resulting value. EXP may contain a format specifier as the
+ first argument ("/x myvar" for example, to print myvar in hex).
+ */
+
static void
-print_command (exp)
+print_command_1 (exp, inspect, voidprint)
char *exp;
+ int inspect;
+ int voidprint;
{
struct expression *expr;
register struct cleanup *old_chain = 0;
register char format = 0;
register value val;
struct format_data fmt;
- int histindex;
int cleanup = 0;
+ /* Pass inspect flag to the rest of the print routines in a global (sigh). */
+ inspect_it = inspect;
+
if (exp && *exp == '/')
{
exp++;
validate_format (fmt, "print");
last_format = format = fmt.format;
}
+ else
+ {
+ fmt.count = 1;
+ fmt.format = 0;
+ fmt.size = 0;
+ }
if (exp && *exp)
{
- expr = parse_c_expression (exp);
+ extern int objectprint;
+ struct type *type;
+ expr = parse_expression (exp);
old_chain = make_cleanup (free_current_contents, &expr);
cleanup = 1;
val = evaluate_expression (expr);
+
+ /* C++: figure out what type we actually want to print it as. */
+ type = VALUE_TYPE (val);
+
+ if (objectprint
+ && ( TYPE_CODE (type) == TYPE_CODE_PTR
+ || TYPE_CODE (type) == TYPE_CODE_REF)
+ && ( TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_STRUCT
+ || TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_UNION))
+ {
+ value v;
+
+ v = value_from_vtable_info (val, TYPE_TARGET_TYPE (type));
+ if (v != 0)
+ {
+ val = v;
+ type = VALUE_TYPE (val);
+ }
+ }
}
else
val = access_value_history (0);
- histindex = record_latest_value (val);
- printf ("$%d = ", histindex);
+ if (voidprint || (val && VALUE_TYPE (val) &&
+ TYPE_CODE (VALUE_TYPE (val)) != TYPE_CODE_VOID))
+ {
+ int histindex = record_latest_value (val);
- print_formatted (val, format);
- printf ("\n");
+ if (inspect)
+ printf ("\031(gdb-makebuffer \"%s\" %d '(\"", exp, histindex);
+ else
+ if (histindex >= 0) printf_filtered ("$%d = ", histindex);
+
+ print_formatted (val, format, fmt.size);
+ printf_filtered ("\n");
+ if (inspect)
+ printf("\") )\030");
+ }
if (cleanup)
do_cleanups (old_chain);
+ inspect_it = 0; /* Reset print routines to normal */
+}
+
+/* ARGSUSED */
+static void
+print_command (exp, from_tty)
+ char *exp;
+ int from_tty;
+{
+ print_command_1 (exp, 0, 1);
+}
+
+/* Same as print, except in epoch, it gets its own window */
+/* ARGSUSED */
+static void
+inspect_command (exp, from_tty)
+ char *exp;
+ int from_tty;
+{
+ extern int epoch_interface;
+
+ print_command_1 (exp, epoch_interface, 1);
+}
+
+/* Same as print, except it doesn't print void results. */
+/* ARGSUSED */
+static void
+call_command (exp, from_tty)
+ char *exp;
+ int from_tty;
+{
+ print_command_1 (exp, 0, 0);
}
+/* ARGSUSED */
static void
-output_command (exp)
+output_command (exp, from_tty)
char *exp;
+ int from_tty;
{
struct expression *expr;
register struct cleanup *old_chain;
{
exp++;
fmt = decode_format (&exp, 0, 0);
- validate_format (fmt, "print");
+ validate_format (fmt, "output");
format = fmt.format;
}
- expr = parse_c_expression (exp);
+ expr = parse_expression (exp);
old_chain = make_cleanup (free_current_contents, &expr);
val = evaluate_expression (expr);
- print_formatted (val, format);
+ print_formatted (val, format, fmt.size);
do_cleanups (old_chain);
}
+/* ARGSUSED */
static void
-set_command (exp)
+set_command (exp, from_tty)
char *exp;
+ int from_tty;
{
- struct expression *expr = parse_c_expression (exp);
+ struct expression *expr = parse_expression (exp);
register struct cleanup *old_chain
= make_cleanup (free_current_contents, &expr);
evaluate_expression (expr);
do_cleanups (old_chain);
}
+/* ARGSUSED */
static void
-address_info (exp)
+address_info (exp, from_tty)
char *exp;
+ int from_tty;
{
register struct symbol *sym;
- register CORE_ADDR val;
+ register struct minimal_symbol *msymbol;
+ register long val;
+ register long basereg;
+ int is_a_field_of_this; /* C++: lookup_symbol sets this to nonzero
+ if exp is a field of `this'. */
if (exp == 0)
error ("Argument required.");
- sym = lookup_symbol (exp, get_selected_block (), VAR_NAMESPACE);
- if (sym == 0)
+ sym = lookup_symbol (exp, get_selected_block (), VAR_NAMESPACE,
+ &is_a_field_of_this, (struct symtab **)NULL);
+ if (sym == NULL)
{
- register int i;
+ if (is_a_field_of_this)
+ {
+ printf ("Symbol \"%s\" is a field of the local class variable `this'\n", exp);
+ return;
+ }
- for (i = 0; i < misc_function_count; i++)
- if (!strcmp (misc_function_vector[i].name, exp))
- break;
+ msymbol = lookup_minimal_symbol (exp, (struct objfile *) NULL);
- if (i < misc_function_count)
- printf ("Symbol \"%s\" is at 0x%x in a file compiled without -g.\n",
- exp, misc_function_vector[i].address);
+ if (msymbol != NULL)
+ printf ("Symbol \"%s\" is at %s in a file compiled without debugging.\n",
+ exp, local_hex_string(SYMBOL_VALUE_ADDRESS (msymbol)));
else
error ("No symbol \"%s\" in current context.", exp);
return;
printf ("Symbol \"%s\" is ", SYMBOL_NAME (sym));
val = SYMBOL_VALUE (sym);
+ basereg = SYMBOL_BASEREG (sym);
switch (SYMBOL_CLASS (sym))
{
break;
case LOC_LABEL:
- printf ("a label at address 0x%x", val);
+ printf ("a label at address %s", local_hex_string(SYMBOL_VALUE_ADDRESS (sym)));
break;
case LOC_REGISTER:
break;
case LOC_STATIC:
- printf ("static at address 0x%x", val);
+ printf ("static storage at address %s", local_hex_string(SYMBOL_VALUE_ADDRESS (sym)));
+ break;
+
+ case LOC_REGPARM:
+ printf ("an argument in register %s", reg_names[val]);
break;
+ case LOC_REGPARM_ADDR:
+ printf ("address of an argument in register %s", reg_names[val]);
+ break;
+
case LOC_ARG:
- printf ("an argument at offset %d", val);
+ if (SYMBOL_BASEREG_VALID (sym))
+ {
+ printf ("an argument at offset %ld from register %s",
+ val, reg_names[basereg]);
+ }
+ else
+ {
+ printf ("an argument at offset %ld", val);
+ }
+ break;
+
+ case LOC_LOCAL_ARG:
+ if (SYMBOL_BASEREG_VALID (sym))
+ {
+ printf ("an argument at offset %ld from register %s",
+ val, reg_names[basereg]);
+ }
+ else
+ {
+ printf ("an argument at frame offset %ld", val);
+ }
break;
case LOC_LOCAL:
- printf ("a local variable at frame offset %d", val);
+ if (SYMBOL_BASEREG_VALID (sym))
+ {
+ printf ("a local variable at offset %ld from register %s",
+ val, reg_names[basereg]);
+ }
+ else
+ {
+ printf ("a local variable at frame offset %ld", val);
+ }
+ break;
+
+ case LOC_REF_ARG:
+ printf ("a reference argument at offset %ld", val);
break;
case LOC_TYPEDEF:
break;
case LOC_BLOCK:
- printf ("a function at address 0x%x",
- BLOCK_START (SYMBOL_BLOCK_VALUE (sym)));
+ printf ("a function at address %s",
+ local_hex_string(BLOCK_START (SYMBOL_BLOCK_VALUE (sym))));
+ break;
+
+ case LOC_OPTIMIZED_OUT:
+ printf_filtered ("optimized out");
+ break;
+
+ default:
+ printf ("of unknown (botched) type");
break;
}
printf (".\n");
struct expression *expr;
struct format_data fmt;
struct cleanup *old_chain;
+ struct value *val;
fmt.format = last_format;
fmt.size = last_size;
{
exp++;
fmt = decode_format (&exp, last_format, last_size);
- last_size = fmt.size;
- last_format = fmt.format;
}
/* If we have an expression, evaluate it and use it as the address. */
if (exp != 0 && *exp != 0)
{
- expr = parse_c_expression (exp);
+ expr = parse_expression (exp);
/* Cause expression not to be there any more
if this command is repeated with Newline.
But don't clobber a user-defined command's definition. */
if (from_tty)
*exp = 0;
old_chain = make_cleanup (free_current_contents, &expr);
- next_address = value_as_long (evaluate_expression (expr));
+ val = evaluate_expression (expr);
+ if (TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_REF)
+ val = value_ind (val);
+ /* In rvalue contexts, such as this, functions are coerced into
+ pointers to functions. This makes "x/i main" work. */
+ if (/* last_format == 'i'
+ && */ TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_FUNC
+ && VALUE_LVAL (val) == lval_memory)
+ next_address = VALUE_ADDRESS (val);
+ else
+ next_address = value_as_pointer (val);
do_cleanups (old_chain);
}
do_examine (fmt, next_address);
- /* Make last address examined available to the user as $_. */
- set_internalvar (lookup_internalvar ("_"),
- value_from_long (builtin_type_int, last_examine_address));
-
- /* Make contents of last address examined available to the user as $__. */
- set_internalvar (lookup_internalvar ("__"), last_examine_value);
-}
-\f
-/* Commands for printing types of things. */
-
-static void
-whatis_command (exp)
- char *exp;
-{
- struct expression *expr;
- register value val;
- register struct cleanup *old_chain;
+ /* If the examine succeeds, we remember its size and format for next time. */
+ last_size = fmt.size;
+ last_format = fmt.format;
- if (exp)
+ /* Set a couple of internal variables if appropriate. */
+ if (last_examine_value)
{
- expr = parse_c_expression (exp);
- old_chain = make_cleanup (free_current_contents, &expr);
- val = evaluate_type (expr);
+ /* Make last address examined available to the user as $_. Use
+ the correct pointer type. */
+ set_internalvar (lookup_internalvar ("_"),
+ value_from_longest (
+ lookup_pointer_type (VALUE_TYPE (last_examine_value)),
+ (LONGEST) last_examine_address));
+
+ /* Make contents of last address examined available to the user as $__.*/
+ set_internalvar (lookup_internalvar ("__"), last_examine_value);
}
- else
- val = access_value_history (0);
-
- printf ("type = ");
- type_print (VALUE_TYPE (val), "", stdout, 1);
- printf ("\n");
-
- if (exp)
- do_cleanups (old_chain);
}
-static void
-ptype_command (typename)
- char *typename;
-{
- register char *p = typename;
- register int len;
- extern struct block *get_current_block ();
- register struct block *b
- = (have_inferior_p () || have_core_file_p ()) ? get_current_block () : 0;
- register struct type *type;
-
- if (typename == 0)
- error_no_arg ("type name");
-
- while (*p && *p != ' ' && *p != '\t') p++;
- len = p - typename;
- while (*p == ' ' || *p == '\t') p++;
-
- if (len == 6 && !strncmp (typename, "struct", 6))
- type = lookup_struct (p, b);
- else if (len == 5 && !strncmp (typename, "union", 5))
- type = lookup_union (p, b);
- else if (len == 4 && !strncmp (typename, "enum", 4))
- type = lookup_enum (p, b);
- else
- {
- type = lookup_typename (typename, b, 1);
- if (type == 0)
- {
- register struct symbol *sym
- = lookup_symbol (typename, b, STRUCT_NAMESPACE);
- if (sym == 0)
- error ("No type named %s.", typename);
- printf ("No type named %s, but there is a ",
- typename);
- switch (TYPE_CODE (SYMBOL_TYPE (sym)))
- {
- case TYPE_CODE_STRUCT:
- printf ("struct");
- break;
-
- case TYPE_CODE_UNION:
- printf ("union");
- break;
-
- case TYPE_CODE_ENUM:
- printf ("enum");
- }
- printf (" %s. Type \"help ptype\".\n", typename);
- type = SYMBOL_TYPE (sym);
- }
- }
-
- type_print (type, "", stdout, 1);
- printf ("\n");
-}
\f
-struct display
-{
- /* Chain link to next auto-display item. */
- struct display *next;
- /* Expression to be evaluated and displayed. */
- struct expression *exp;
- /* Item number of this auto-display item. */
- int number;
- /* Display format specified. */
- struct format_data format;
- /* Block in which expression is to be evaluated. */
- struct block *block;
-};
-
-/* Chain of expressions whose values should be displayed
- automatically each time the program stops. */
-
-static struct display *display_chain;
-
-static int display_number;
-
/* Add an expression to the auto-display chain.
Specify the expression. */
static void
-display_command (exp)
+display_command (exp, from_tty)
char *exp;
+ int from_tty;
{
struct format_data fmt;
register struct expression *expr;
fmt.count = 0;
}
- expr = parse_c_expression (exp);
+ innermost_block = 0;
+ expr = parse_expression (exp);
new = (struct display *) xmalloc (sizeof (struct display));
new->exp = expr;
+ new->block = innermost_block;
new->next = display_chain;
new->number = ++display_number;
new->format = fmt;
+ new->status = enabled;
display_chain = new;
+ if (from_tty && target_has_execution)
+ do_one_display (new);
+
dont_repeat ();
}
free_display (d)
struct display *d;
{
- free (d->exp);
- free (d);
+ free ((PTR)d->exp);
+ free ((PTR)d);
}
/* Clear out the display_chain.
{
register struct display *d;
- while (d = display_chain)
+ while ((d = display_chain) != NULL)
{
- free (d->exp);
+ free ((PTR)d->exp);
display_chain = d->next;
- free (d);
+ free ((PTR)d);
+ }
+}
+
+/* Delete the auto-display number NUM. */
+
+static void
+delete_display (num)
+ int num;
+{
+ register struct display *d1, *d;
+
+ if (!display_chain)
+ error ("No display number %d.", num);
+
+ if (display_chain->number == num)
+ {
+ d1 = display_chain;
+ display_chain = d1->next;
+ free_display (d1);
}
+ else
+ for (d = display_chain; ; d = d->next)
+ {
+ if (d->next == 0)
+ error ("No display number %d.", num);
+ if (d->next->number == num)
+ {
+ d1 = d->next;
+ d->next = d1->next;
+ free_display (d1);
+ break;
+ }
+ }
}
/* Delete some values from the auto-display chain.
Specify the element numbers. */
static void
-undisplay_command (args)
+undisplay_command (args, from_tty)
char *args;
+ int from_tty;
{
register char *p = args;
register char *p1;
register int num;
- register struct display *d, *d1;
if (args == 0)
{
num = atoi (p);
- if (display_chain->number == num)
- {
- d1 = display_chain;
- display_chain = d1->next;
- free_display (d1);
- }
- else
- for (d = display_chain; ; d = d->next)
- {
- if (d->next == 0)
- error ("No display number %d.", num);
- if (d->next->number == num)
- {
- d1 = d->next;
- d->next = d1->next;
- free_display (d1);
- break;
- }
- }
+ delete_display (num);
p = p1;
while (*p == ' ' || *p == '\t') p++;
dont_repeat ();
}
-/* Display all of the values on the auto-display chain. */
+/* Display a single auto-display.
+ Do nothing if the display cannot be printed in the current context,
+ or if the display is disabled. */
+
+static void
+do_one_display (d)
+ struct display *d;
+{
+ int within_current_scope;
+
+ if (d->status == disabled)
+ return;
+
+ if (d->block)
+ within_current_scope = contained_in (get_selected_block (), d->block);
+ else
+ within_current_scope = 1;
+ if (!within_current_scope)
+ return;
+
+ current_display_number = d->number;
+
+ printf_filtered ("%d: ", d->number);
+ if (d->format.size)
+ {
+ CORE_ADDR addr;
+
+ printf_filtered ("x/");
+ if (d->format.count != 1)
+ printf_filtered ("%d", d->format.count);
+ printf_filtered ("%c", d->format.format);
+ if (d->format.format != 'i' && d->format.format != 's')
+ printf_filtered ("%c", d->format.size);
+ printf_filtered (" ");
+ print_expression (d->exp, stdout);
+ if (d->format.count != 1)
+ printf_filtered ("\n");
+ else
+ printf_filtered (" ");
+
+ addr = value_as_pointer (evaluate_expression (d->exp));
+ if (d->format.format == 'i')
+ addr = ADDR_BITS_REMOVE (addr);
+
+ do_examine (d->format, addr);
+ }
+ else
+ {
+ if (d->format.format)
+ printf_filtered ("/%c ", d->format.format);
+ print_expression (d->exp, stdout);
+ printf_filtered (" = ");
+ print_formatted (evaluate_expression (d->exp),
+ d->format.format, d->format.size);
+ printf_filtered ("\n");
+ }
+
+ fflush (stdout);
+ current_display_number = -1;
+}
+
+/* Display all of the values on the auto-display chain which can be
+ evaluated in the current scope. */
void
do_displays ()
register struct display *d;
for (d = display_chain; d; d = d->next)
+ do_one_display (d);
+}
+
+/* Delete the auto-display which we were in the process of displaying.
+ This is done when there is an error or a signal. */
+
+void
+disable_display (num)
+ int num;
+{
+ register struct display *d;
+
+ for (d = display_chain; d; d = d->next)
+ if (d->number == num)
+ {
+ d->status = disabled;
+ return;
+ }
+ printf ("No display number %d.\n", num);
+}
+
+void
+disable_current_display ()
+{
+ if (current_display_number >= 0)
{
- printf ("%d: ", d->number);
- if (d->format.size)
- {
- printf ("x/");
- if (d->format.count != 1)
- printf ("%d", d->format.count);
- printf ("%c", d->format.format);
- if (d->format.format != 'i' && d->format.format != 's')
- printf ("%c", d->format.size);
- printf (" ");
- print_expression (d->exp, stdout);
- if (d->format.count != 1)
- printf ("\n");
- else
- printf (" ");
- do_examine (d->format,
- value_as_long (evaluate_expression (d->exp)));
- }
- else
- {
- if (d->format.format)
- printf ("/%c ", d->format.format);
- print_expression (d->exp, stdout);
- printf (" = ");
- print_formatted (evaluate_expression (d->exp), d->format.format);
- printf ("\n");
- }
- fflush (stdout);
+ disable_display (current_display_number);
+ fprintf (stderr, "Disabling display %d to avoid infinite recursion.\n",
+ current_display_number);
}
+ current_display_number = -1;
}
static void
-display_info ()
+display_info (ignore, from_tty)
+ char *ignore;
+ int from_tty;
{
register struct display *d;
if (!display_chain)
printf ("There are no auto-display expressions now.\n");
else
- printf ("Auto-display expressions now in effect:\n");
+ printf_filtered ("Auto-display expressions now in effect:\n\
+Num Enb Expression\n");
+
for (d = display_chain; d; d = d->next)
{
- printf ("%d: ", d->number);
+ printf_filtered ("%d: %c ", d->number, "ny"[(int)d->status]);
if (d->format.size)
- printf ("/%d%c%c ", d->format.count, d->format.size,
+ printf_filtered ("/%d%c%c ", d->format.count, d->format.size,
d->format.format);
else if (d->format.format)
- printf ("/%c ", d->format.format);
+ printf_filtered ("/%c ", d->format.format);
print_expression (d->exp, stdout);
- printf ("\n");
+ if (d->block && !contained_in (get_selected_block (), d->block))
+ printf_filtered (" (cannot be evaluated in the current context)");
+ printf_filtered ("\n");
fflush (stdout);
}
}
+
+static void
+enable_display (args, from_tty)
+ char *args;
+ int from_tty;
+{
+ register char *p = args;
+ register char *p1;
+ register int num;
+ register struct display *d;
+
+ if (p == 0)
+ {
+ for (d = display_chain; d; d = d->next)
+ d->status = enabled;
+ }
+ else
+ while (*p)
+ {
+ p1 = p;
+ while (*p1 >= '0' && *p1 <= '9')
+ p1++;
+ if (*p1 && *p1 != ' ' && *p1 != '\t')
+ error ("Arguments must be display numbers.");
+
+ num = atoi (p);
+
+ for (d = display_chain; d; d = d->next)
+ if (d->number == num)
+ {
+ d->status = enabled;
+ goto win;
+ }
+ printf ("No display number %d.\n", num);
+ win:
+ p = p1;
+ while (*p == ' ' || *p == '\t')
+ p++;
+ }
+}
+
+/* ARGSUSED */
+static void
+disable_display_command (args, from_tty)
+ char *args;
+ int from_tty;
+{
+ register char *p = args;
+ register char *p1;
+ register struct display *d;
+
+ if (p == 0)
+ {
+ for (d = display_chain; d; d = d->next)
+ d->status = disabled;
+ }
+ else
+ while (*p)
+ {
+ p1 = p;
+ while (*p1 >= '0' && *p1 <= '9')
+ p1++;
+ if (*p1 && *p1 != ' ' && *p1 != '\t')
+ error ("Arguments must be display numbers.");
+
+ disable_display (atoi (p));
+
+ p = p1;
+ while (*p == ' ' || *p == '\t')
+ p++;
+ }
+}
+
\f
/* Print the value in stack frame FRAME of a variable
specified by a struct symbol. */
void
print_variable_value (var, frame, stream)
struct symbol *var;
- CORE_ADDR frame;
+ FRAME frame;
FILE *stream;
{
value val = read_var_value (var, frame);
- value_print (val, stream);
+ value_print (val, stream, 0, Val_pretty_default);
}
/* Print the arguments of a stack frame, given the function FUNC
- running in that frame (as a symbol), the address of the arglist,
+ running in that frame (as a symbol), the info on the frame,
and the number of args according to the stack frame (or -1 if unknown). */
-static void print_frame_nameless_args ();
+/* References here and elsewhere to "number of args according to the
+ stack frame" appear in all cases to refer to "number of ints of args
+ according to the stack frame". At least for VAX, i386, isi. */
-print_frame_args (func, addr, num, stream)
+void
+print_frame_args (func, fi, num, stream)
struct symbol *func;
- register CORE_ADDR addr;
+ struct frame_info *fi;
int num;
FILE *stream;
{
int nsyms = 0;
int first = 1;
register int i;
- register int last_offset = FRAME_ARGS_SKIP;
- register struct symbol *sym, *nextsym;
+ register struct symbol *sym;
register value val;
+ /* Offset of next stack argument beyond the one we have seen that is
+ at the highest offset.
+ -1 if we haven't come to a stack argument yet. */
+ long highest_offset = -1;
+ int arg_size;
+ /* Number of ints of arguments that we have printed so far. */
+ int args_printed = 0;
if (func)
{
nsyms = BLOCK_NSYMS (b);
}
- while (1)
+ for (i = 0; i < nsyms; i++)
{
- /* Find first arg that is not before LAST_OFFSET. */
- nextsym = 0;
- for (i = 0; i < nsyms; i++)
+ QUIT;
+ sym = BLOCK_SYM (b, i);
+
+ /* Keep track of the highest stack argument offset seen, and
+ skip over any kinds of symbols we don't care about. */
+
+ switch (SYMBOL_CLASS (sym)) {
+ case LOC_ARG:
+ case LOC_REF_ARG:
{
- QUIT;
- sym = BLOCK_SYM (b, i);
- if (SYMBOL_CLASS (sym) == LOC_ARG
- && SYMBOL_VALUE (sym) >= last_offset
- && (nextsym == 0
- || SYMBOL_VALUE (sym) < SYMBOL_VALUE (nextsym)))
- nextsym = sym;
+ long current_offset = SYMBOL_VALUE (sym);
+
+ arg_size = TYPE_LENGTH (SYMBOL_TYPE (sym));
+
+ /* Compute address of next argument by adding the size of
+ this argument and rounding to an int boundary. */
+ current_offset
+ = ((current_offset + arg_size + sizeof (int) - 1)
+ & ~(sizeof (int) - 1));
+
+ /* If this is the highest offset seen yet, set highest_offset. */
+ if (highest_offset == -1
+ || (current_offset > highest_offset))
+ highest_offset = current_offset;
+
+ /* Add the number of ints we're about to print to args_printed. */
+ args_printed += (arg_size + sizeof (int) - 1) / sizeof (int);
}
- if (nextsym == 0)
+
+ /* We care about types of symbols, but don't need to keep track of
+ stack offsets in them. */
+ case LOC_REGPARM:
+ case LOC_REGPARM_ADDR:
+ case LOC_LOCAL_ARG:
break;
- sym = nextsym;
- /* Print any nameless args between the last arg printed
- and the next arg. */
- if (last_offset != (SYMBOL_VALUE (sym) / sizeof (int)) * sizeof (int))
- {
- print_frame_nameless_args (addr, last_offset, SYMBOL_VALUE (sym),
- stream);
- first = 0;
- }
- /* Print the next arg. */
- val = value_at (SYMBOL_TYPE (sym), addr + SYMBOL_VALUE (sym));
+
+ /* Other types of symbols we just skip over. */
+ default:
+ continue;
+ }
+
+ /* We have to look up the symbol because arguments can have
+ two entries (one a parameter, one a local) and the one we
+ want is the local, which lookup_symbol will find for us.
+ This includes gcc1 (not gcc2) on the sparc when passing a
+ small structure and gcc2 when the argument type is float
+ and it is passed as a double and converted to float by
+ the prologue (in the latter case the type of the LOC_ARG
+ symbol is double and the type of the LOC_LOCAL symbol is
+ float). There are also LOC_ARG/LOC_REGISTER pairs which
+ are not combined in symbol-reading. */
+ /* But if the parameter name is null, don't try it.
+ Null parameter names occur on the RS/6000, for traceback tables.
+ FIXME, should we even print them? */
+
+ if (*SYMBOL_NAME (sym))
+ sym = lookup_symbol
+ (SYMBOL_NAME (sym),
+ b, VAR_NAMESPACE, (int *)NULL, (struct symtab **)NULL);
+
+ /* Print the current arg. */
if (! first)
- fprintf (stream, ", ");
- fprintf (stream, "%s=", SYMBOL_NAME (sym));
- value_print (val, stream);
+ fprintf_filtered (stream, ", ");
+ wrap_here (" ");
+ fprintf_symbol_filtered (stream, SYMBOL_SOURCE_NAME (sym),
+ SYMBOL_LANGUAGE (sym), DMGL_PARAMS | DMGL_ANSI);
+ fputs_filtered ("=", stream);
+
+ /* Avoid value_print because it will deref ref parameters. We just
+ want to print their addresses. Print ??? for args whose address
+ we do not know. We pass 2 as "recurse" to val_print because our
+ standard indentation here is 4 spaces, and val_print indents
+ 2 for each recurse. */
+ val = read_var_value (sym, FRAME_INFO_ID (fi));
+ if (val)
+ val_print (VALUE_TYPE (val), VALUE_CONTENTS (val), VALUE_ADDRESS (val),
+ stream, 0, 0, 2, Val_no_prettyprint);
+ else
+ fputs_filtered ("???", stream);
first = 0;
- last_offset = SYMBOL_VALUE (sym) + TYPE_LENGTH (SYMBOL_TYPE (sym));
- /* Round up address of next arg to multiple of size of int. */
- last_offset
- = ((last_offset + sizeof (int) - 1) / sizeof (int)) * sizeof (int);
}
- if (num >= 0 && num * sizeof (int) + FRAME_ARGS_SKIP > last_offset)
- print_frame_nameless_args (addr, last_offset,
- num * sizeof (int) + FRAME_ARGS_SKIP, stream);
+
+ /* Don't print nameless args in situations where we don't know
+ enough about the stack to find them. */
+ if (num != -1)
+ {
+ long start;
+
+ if (highest_offset == -1)
+ start = FRAME_ARGS_SKIP;
+ else
+ start = highest_offset;
+
+ print_frame_nameless_args (fi, start, num - args_printed,
+ first, stream);
+ }
}
+/* Print nameless args on STREAM.
+ FI is the frameinfo for this frame, START is the offset
+ of the first nameless arg, and NUM is the number of nameless args to
+ print. FIRST is nonzero if this is the first argument (not just
+ the first nameless arg). */
static void
-print_frame_nameless_args (argsaddr, start, end, stream)
- CORE_ADDR argsaddr;
- int start;
- int end;
+print_frame_nameless_args (fi, start, num, first, stream)
+ struct frame_info *fi;
+ long start;
+ int num;
+ int first;
FILE *stream;
{
- while (start < end)
+ int i;
+ CORE_ADDR argsaddr;
+ long arg_value;
+
+ for (i = 0; i < num; i++)
{
QUIT;
- if (start != FRAME_ARGS_SKIP)
- fprintf (stream, ", ");
- fprintf (stream, "%d",
- read_memory_integer (argsaddr + start, sizeof (int)));
+#ifdef NAMELESS_ARG_VALUE
+ NAMELESS_ARG_VALUE (fi, start, &arg_value);
+#else
+ argsaddr = FRAME_ARGS_ADDRESS (fi);
+ if (!argsaddr)
+ return;
+
+ arg_value = read_memory_integer (argsaddr + start, sizeof (int));
+#endif
+
+ if (!first)
+ fprintf_filtered (stream, ", ");
+
+#ifdef PRINT_NAMELESS_INTEGER
+ PRINT_NAMELESS_INTEGER (stream, arg_value);
+#else
+#ifdef PRINT_TYPELESS_INTEGER
+ PRINT_TYPELESS_INTEGER (stream, builtin_type_int, (LONGEST) arg_value);
+#else
+ fprintf_filtered (stream, "%d", arg_value);
+#endif /* PRINT_TYPELESS_INTEGER */
+#endif /* PRINT_NAMELESS_INTEGER */
+ first = 0;
start += sizeof (int);
}
}
\f
-static
-initialize ()
+/* ARGSUSED */
+static void
+printf_command (arg, from_tty)
+ char *arg;
+ int from_tty;
+{
+ register char *f;
+ register char *s = arg;
+ char *string;
+ value *val_args;
+ int nargs = 0;
+ int allocated_args = 20;
+ char *arg_bytes;
+
+ val_args = (value *) xmalloc (allocated_args * sizeof (value));
+
+ if (s == 0)
+ error_no_arg ("format-control string and values to print");
+
+ /* Skip white space before format string */
+ while (*s == ' ' || *s == '\t') s++;
+
+ /* A format string should follow, enveloped in double quotes */
+ if (*s++ != '"')
+ error ("Bad format string, missing '\"'.");
+
+ /* Parse the format-control string and copy it into the string STRING,
+ processing some kinds of escape sequence. */
+
+ f = string = (char *) alloca (strlen (s) + 1);
+ while (*s != '"')
+ {
+ int c = *s++;
+ switch (c)
+ {
+ case '\0':
+ error ("Bad format string, non-terminated '\"'.");
+ /* doesn't return */
+
+ case '\\':
+ switch (c = *s++)
+ {
+ case '\\':
+ *f++ = '\\';
+ break;
+ case 'n':
+ *f++ = '\n';
+ break;
+ case 't':
+ *f++ = '\t';
+ break;
+ case 'r':
+ *f++ = '\r';
+ break;
+ case '"':
+ *f++ = '"';
+ break;
+ default:
+ /* ??? TODO: handle other escape sequences */
+ error ("Unrecognized \\ escape character in format string.");
+ }
+ break;
+
+ default:
+ *f++ = c;
+ }
+ }
+
+ /* Skip over " and following space and comma. */
+ s++;
+ *f++ = '\0';
+ while (*s == ' ' || *s == '\t') s++;
+
+ if (*s != ',' && *s != 0)
+ error ("Invalid argument syntax");
+
+ if (*s == ',') s++;
+ while (*s == ' ' || *s == '\t') s++;
+
+ {
+ /* Now scan the string for %-specs and see what kinds of args they want.
+ argclass[I] classifies the %-specs so we can give vprintf something
+ of the right size. */
+
+ enum argclass {int_arg, string_arg, double_arg, long_long_arg};
+ enum argclass *argclass;
+ int nargs_wanted;
+ int argindex;
+ int lcount;
+ int i;
+
+ argclass = (enum argclass *) alloca (strlen (s) * sizeof *argclass);
+ nargs_wanted = 0;
+ f = string;
+ while (*f)
+ if (*f++ == '%')
+ {
+ lcount = 0;
+ while (strchr ("0123456789.hlL-+ #", *f))
+ {
+ if (*f == 'l' || *f == 'L')
+ lcount++;
+ f++;
+ }
+ if (*f == 's')
+ argclass[nargs_wanted++] = string_arg;
+ else if (*f == 'e' || *f == 'f' || *f == 'g')
+ argclass[nargs_wanted++] = double_arg;
+ else if (lcount > 1)
+ argclass[nargs_wanted++] = long_long_arg;
+ else if (*f != '%')
+ argclass[nargs_wanted++] = int_arg;
+ f++;
+ }
+
+ /* Now, parse all arguments and evaluate them.
+ Store the VALUEs in VAL_ARGS. */
+
+ while (*s != '\0')
+ {
+ char *s1;
+ if (nargs == allocated_args)
+ val_args = (value *) xrealloc ((char *) val_args,
+ (allocated_args *= 2)
+ * sizeof (value));
+ s1 = s;
+ val_args[nargs] = parse_to_comma_and_eval (&s1);
+
+ /* If format string wants a float, unchecked-convert the value to
+ floating point of the same size */
+
+ if (argclass[nargs] == double_arg)
+ {
+ if (TYPE_LENGTH (VALUE_TYPE (val_args[nargs])) == sizeof (float))
+ VALUE_TYPE (val_args[nargs]) = builtin_type_float;
+ if (TYPE_LENGTH (VALUE_TYPE (val_args[nargs])) == sizeof (double))
+ VALUE_TYPE (val_args[nargs]) = builtin_type_double;
+ }
+ nargs++;
+ s = s1;
+ if (*s == ',')
+ s++;
+ }
+
+ if (nargs != nargs_wanted)
+ error ("Wrong number of arguments for specified format-string");
+
+ /* Now lay out an argument-list containing the arguments
+ as doubles, integers and C pointers. */
+
+ arg_bytes = (char *) alloca (sizeof (double) * nargs);
+ argindex = 0;
+ for (i = 0; i < nargs; i++)
+ {
+ if (argclass[i] == string_arg)
+ {
+ char *str;
+ CORE_ADDR tem;
+ int j;
+ tem = value_as_pointer (val_args[i]);
+
+ /* This is a %s argument. Find the length of the string. */
+ for (j = 0; ; j++)
+ {
+ char c;
+ QUIT;
+ read_memory (tem + j, &c, 1);
+ if (c == 0)
+ break;
+ }
+
+ /* Copy the string contents into a string inside GDB. */
+ str = (char *) alloca (j + 1);
+ read_memory (tem, str, j);
+ str[j] = 0;
+
+ /* Pass address of internal copy as the arg to vprintf. */
+ *((int *) &arg_bytes[argindex]) = (int) str;
+ argindex += sizeof (int);
+ }
+ else if (VALUE_TYPE (val_args[i])->code == TYPE_CODE_FLT)
+ {
+ *((double *) &arg_bytes[argindex]) = value_as_double (val_args[i]);
+ argindex += sizeof (double);
+ }
+ else
+#ifdef CC_HAS_LONG_LONG
+ if (argclass[i] == long_long_arg)
+ {
+ *(LONGEST *) &arg_bytes[argindex] = value_as_long (val_args[i]);
+ argindex += sizeof (LONGEST);
+ }
+ else
+#endif
+ {
+ *((long *) &arg_bytes[argindex]) = value_as_long (val_args[i]);
+ argindex += sizeof (long);
+ }
+ }
+ }
+
+ /* There is not a standard way to make a va_list, so we need
+ to do various things for different systems. */
+#if defined (__INT_VARARGS_H)
+ {
+ va_list list;
+
+ list.__va_arg = 0;
+ list.__va_stk = (int *) arg_bytes;
+ list.__va_reg = (int *) arg_bytes;
+ vprintf (string, list);
+ }
+#else /* No __INT_VARARGS_H. */
+ vprintf (string, arg_bytes);
+#endif /* No __INT_VARARGS_H. */
+}
+\f
+/* Helper function for asdump_command. Finds the bounds of a function
+ for a specified section of text. PC is an address within the
+ function which you want bounds for; *LOW and *HIGH are set to the
+ beginning (inclusive) and end (exclusive) of the function. This
+ function returns 1 on success and 0 on failure. */
+
+static int
+containing_function_bounds (pc, low, high)
+ CORE_ADDR pc, *low, *high;
+{
+ CORE_ADDR scan;
+ CORE_ADDR limit;
+ struct obj_section *sec;
+
+ if (!find_pc_partial_function (pc, 0, low))
+ return 0;
+
+ sec = find_pc_section (pc);
+ if (sec == NULL)
+ return 0;
+ limit = sec->endaddr;
+
+ scan = *low;
+ while (scan < limit)
+ {
+ ++scan;
+ if (!find_pc_partial_function (scan, 0, high))
+ return 0;
+ if (*low != *high)
+ return 1;
+ }
+ *high = limit;
+ return 1;
+}
+
+/* Dump a specified section of assembly code. With no command line
+ arguments, this command will dump the assembly code for the
+ function surrounding the pc value in the selected frame. With one
+ argument, it will dump the assembly code surrounding that pc value.
+ Two arguments are interpeted as bounds within which to dump
+ assembly. */
+
+/* ARGSUSED */
+static void
+disassemble_command (arg, from_tty)
+ char *arg;
+ int from_tty;
+{
+ CORE_ADDR low, high;
+ CORE_ADDR pc;
+ char *space_index;
+
+ if (!arg)
+ {
+ if (!selected_frame)
+ error ("No frame selected.\n");
+
+ pc = get_frame_pc (selected_frame);
+ if (!containing_function_bounds (pc, &low, &high))
+ error ("No function contains pc specified by selected frame.\n");
+ }
+ else if (!(space_index = (char *) strchr (arg, ' ')))
+ {
+ /* One argument. */
+ pc = parse_and_eval_address (arg);
+ if (!containing_function_bounds (pc, &low, &high))
+ error ("No function contains specified pc.\n");
+ }
+ else
+ {
+ /* Two arguments. */
+ *space_index = '\0';
+ low = parse_and_eval_address (arg);
+ high = parse_and_eval_address (space_index + 1);
+ }
+
+ printf_filtered ("Dump of assembler code ");
+ if (!space_index)
+ {
+ char *name;
+ find_pc_partial_function (pc, &name, 0);
+ printf_filtered ("for function %s:\n", name);
+ }
+ else
+ {
+ printf_filtered ("from %s ", local_hex_string(low));
+ printf_filtered ("to %s:\n", local_hex_string(high));
+ }
+
+ /* Dump the specified range. */
+ for (pc = low; pc < high; )
+ {
+ QUIT;
+ print_address (pc, stdout);
+ printf_filtered (":\t");
+ pc += print_insn (pc, stdout);
+ printf_filtered ("\n");
+ }
+ printf_filtered ("End of assembler dump.\n");
+ fflush (stdout);
+}
+
+\f
+void
+_initialize_printcmd ()
{
+ current_display_number = -1;
+
add_info ("address", address_info,
"Describe where variable VAR is stored.");
ADDRESS is an expression for the memory address to examine.\n\
FMT is a repeat count followed by a format letter and a size letter.\n\
Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),\n\
- f(float), a(address), i(instruction), c(char) and s(string).\n\
+ t(binary), f(float), a(address), i(instruction), c(char) and s(string).\n\
Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).\n\
- g is meaningful only with f, for type double.\n\
The specified number of objects of the specified size are printed\n\
according to the format.\n\n\
Defaults for format and size letters are those previously used.\n\
Default count is 1. Default address is following last thing printed\n\
with this command or \"print\".");
- add_com ("ptype", class_vars, ptype_command,
- "Print definition of type TYPE.\n\
-Argument may be a type name defined by typedef, or \"struct STRUCTNAME\"\n\
-or \"union UNIONNAME\" or \"enum ENUMNAME\".\n\
-The selected stack frame's lexical context is used to look up the name.");
-
- add_com ("whatis", class_vars, whatis_command,
- "Print data type of expression EXP.");
+ add_com ("disassemble", class_vars, disassemble_command,
+ "Disassemble a specified section of memory.\n\
+Default is the function surrounding the pc of the selected frame.\n\
+With a single argument, the function surrounding that address is dumped.\n\
+Two arguments are taken as a range of memory to dump.");
+#if 0
+ add_com ("whereis", class_vars, whereis_command,
+ "Print line number and file of definition of variable.");
+#endif
+
add_info ("display", display_info,
"Expressions to display when program stops, with code numbers.");
- add_com ("undisplay", class_vars, undisplay_command,
- "Cancel some expressions to be displayed whenever program stops.\n\
+
+ add_cmd ("undisplay", class_vars, undisplay_command,
+ "Cancel some expressions to be displayed when program stops.\n\
Arguments are the code numbers of the expressions to stop displaying.\n\
No argument means cancel all automatic-display expressions.\n\
-Do \"info display\" to see current list of code numbers.");
+\"delete display\" has the same effect as this command.\n\
+Do \"info display\" to see current list of code numbers.",
+ &cmdlist);
+
add_com ("display", class_vars, display_command,
"Print value of expression EXP each time the program stops.\n\
/FMT may be used before EXP as in the \"print\" command.\n\
With no argument, display all currently requested auto-display expressions.\n\
Use \"undisplay\" to cancel display requests previously made.");
+ add_cmd ("display", class_vars, enable_display,
+ "Enable some expressions to be displayed when program stops.\n\
+Arguments are the code numbers of the expressions to resume displaying.\n\
+No argument means enable all automatic-display expressions.\n\
+Do \"info display\" to see current list of code numbers.", &enablelist);
+
+ add_cmd ("display", class_vars, disable_display_command,
+ "Disable some expressions to be displayed when program stops.\n\
+Arguments are the code numbers of the expressions to stop displaying.\n\
+No argument means disable all automatic-display expressions.\n\
+Do \"info display\" to see current list of code numbers.", &disablelist);
+
+ add_cmd ("display", class_vars, undisplay_command,
+ "Cancel some expressions to be displayed when program stops.\n\
+Arguments are the code numbers of the expressions to stop displaying.\n\
+No argument means cancel all automatic-display expressions.\n\
+Do \"info display\" to see current list of code numbers.", &deletelist);
+
+ add_com ("printf", class_vars, printf_command,
+ "printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\
+This is useful for formatted output in user-defined commands.");
add_com ("output", class_vars, output_command,
"Like \"print\" but don't put in value history and don't print newline.\n\
This is useful in user-defined commands.");
- add_com ("set", class_vars, set_command,
- "Perform an assignment VAR = EXP. You must type the \"=\".\n\
-VAR may be a debugger \"convenience\" variables (names starting with $),\n\
-a register (a few standard names starting with $), or an actual variable\n\
-in the program being debugger. EXP is any expression.");
+ add_prefix_cmd ("set", class_vars, set_command,
+"Evaluate expression EXP and assign result to variable VAR, using assignment\n\
+syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
+example). VAR may be a debugger \"convenience\" variable (names starting\n\
+with $), a register (a few standard names starting with $), or an actual\n\
+variable in the program being debugged. EXP is any valid expression.\n\
+Use \"set variable\" for variables with names identical to set subcommands.\n\
+\nWith a subcommand, this command modifies parts of the gdb environment.\n\
+You can see these environment settings with the \"show\" command.",
+ &setlist, "set ", 1, &cmdlist);
+
+ /* "call" is the same as "set", but handy for dbx users to call fns. */
+ add_com ("call", class_vars, call_command,
+ "Call a function in the program.\n\
+The argument is the function name and arguments, in the notation of the\n\
+current working language. The result is printed and saved in the value\n\
+history, if it is not void.");
+
+ add_cmd ("variable", class_vars, set_command,
+"Evaluate expression EXP and assign result to variable VAR, using assignment\n\
+syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
+example). VAR may be a debugger \"convenience\" variable (names starting\n\
+with $), a register (a few standard names starting with $), or an actual\n\
+variable in the program being debugged. EXP is any valid expression.\n\
+This may usually be abbreviated to simply \"set\".",
+ &setlist);
add_com ("print", class_vars, print_command,
concat ("Print value of expression EXP.\n\
\"convenience\" variables (any such name not a known register).\n\
Use assignment expressions to give values to convenience variables.\n",
"\n\
-\{TYPE}ADREXP refers to a datum of data type TYPE, located at address ADREXP.\n\
+{TYPE}ADREXP refers to a datum of data type TYPE, located at address ADREXP.\n\
@ is a binary operator for treating consecutive data objects\n\
anywhere in memory as an array. FOO@NUM gives an array whose first\n\
element is FOO, whose second element is stored in the space following\n\
resides in memory.\n",
"\n\
EXP may be preceded with /FMT, where FMT is a format letter\n\
-but no count or size letter (see \"x\" command)."));
+but no count or size letter (see \"x\" command).", NULL));
add_com_alias ("p", "print", class_vars, 1);
-}
-END_FILE
+ add_com ("inspect", class_vars, inspect_command,
+"Same as \"print\" command, except that if you are running in the epoch\n\
+environment, the value is printed in its own window.");
+
+ add_show_from_set (
+ add_set_cmd ("max-symbolic-offset", no_class, var_uinteger,
+ (char *)&max_symbolic_offset,
+ "Set the largest offset that will be printed in <symbol+1234> form.",
+ &setprintlist),
+ &showprintlist);
+}
projects / deliverable / binutils-gdb.git / blobdiff