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authorStan Shebs <shebs@codesourcery.com>1999-04-16 01:34:07 +0000
committerStan Shebs <shebs@codesourcery.com>1999-04-16 01:34:07 +0000
commit071ea11e85eb9d529cc5eb3d35f6247466a21b99 (patch)
tree5deda65b8d7b04d1f4cbc534c3206d328e1267ec /gdb/printcmd.c
parent1730ec6b1848f0f32154277f788fb29f88d8475b (diff)
downloadgdb-071ea11e85eb9d529cc5eb3d35f6247466a21b99.zip
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Initial creation of sourceware repository
Diffstat (limited to 'gdb/printcmd.c')
-rw-r--r--gdb/printcmd.c2465
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diff --git a/gdb/printcmd.c b/gdb/printcmd.c
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--- a/gdb/printcmd.c
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@@ -1,2465 +0,0 @@
-/* Print values for GNU debugger GDB.
- Copyright 1986, 87, 88, 89, 90, 91, 93, 94, 95, 1998
- 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
-
-#include "defs.h"
-#include "gdb_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"
-#include "valprint.h"
-#include "annotate.h"
-#include "symfile.h" /* for overlay functions */
-#include "objfiles.h" /* ditto */
-
-extern int asm_demangle; /* Whether to demangle syms in asm printouts */
-extern int addressprint; /* Whether to print hex addresses in HLL " */
-
-struct format_data
-{
- int count;
- char format;
- char size;
-};
-
-/* Last specified output format. */
-
-static char last_format = 'x';
-
-/* Last specified examination size. 'b', 'h', 'w' or `q'. */
-
-static char last_size = 'w';
-
-/* Default address to examine next. */
-
-static CORE_ADDR next_address;
-
-/* Default section to examine next. */
-
-static asection *next_section;
-
-/* Last address examined. */
-
-static CORE_ADDR last_examine_address;
-
-/* Contents of last address examined.
- This is not valid past the end of the `x' command! */
-
-static value_ptr last_examine_value;
-
-/* 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;
-
-/* Append the source filename and linenumber of the symbol when
- printing a symbolic value as `<symbol at filename:linenum>' if set. */
-static int print_symbol_filename = 0;
-
-/* 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;
-
-/* Pointer to the target-dependent disassembly function. */
-
-int (*tm_print_insn) PARAMS ((bfd_vma, disassemble_info *));
-disassemble_info tm_print_insn_info;
-
-/* Prototypes for exported functions. */
-
-void output_command PARAMS ((char *, int));
-
-void _initialize_printcmd PARAMS ((void));
-
-/* 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 void printf_command PARAMS ((char *, int));
-
-static void print_frame_nameless_args PARAMS ((struct frame_info *, long,
- int, int, GDB_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));
-
-void x_command PARAMS ((char *, int));
-
-static void address_info PARAMS ((char *, int));
-
-static void set_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 addr, asection *section));
-
-static void print_formatted PARAMS ((value_ptr, int, int));
-
-static struct format_data decode_format PARAMS ((char **, int, int));
-
-static int print_insn PARAMS ((CORE_ADDR, GDB_FILE *));
-
-static void sym_info PARAMS ((char *, int));
-
-
-/* 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. */
-
-static struct format_data
-decode_format (string_ptr, oformat, osize)
- char **string_ptr;
- int oformat;
- int osize;
-{
- struct format_data val;
- register char *p = *string_ptr;
-
- val.format = '?';
- val.size = '?';
- val.count = 1;
-
- if (*p >= '0' && *p <= '9')
- val.count = atoi (p);
- while (*p >= '0' && *p <= '9') p++;
-
- /* Now process size or format letters that follow. */
-
- while (1)
- {
- if (*p == 'b' || *p == 'h' || *p == 'w' || *p == 'g')
- val.size = *p++;
- else if (*p >= 'a' && *p <= 'z')
- val.format = *p++;
- else
- break;
- }
-
- 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':
- /* Pick the appropriate size for an address. */
- if (TARGET_PTR_BIT == 64)
- val.size = osize ? 'g' : osize;
- else if (TARGET_PTR_BIT == 32)
- val.size = osize ? 'w' : osize;
- else if (TARGET_PTR_BIT == 16)
- val.size = osize ? 'h' : osize;
- else
- /* Bad value for TARGET_PTR_BIT */
- abort ();
- 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;
-}
-
-/* Print value VAL on gdb_stdout according to FORMAT, a letter or 0.
- Do not end with a newline.
- 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, size)
- register value_ptr val;
- register int format;
- int size;
-{
- struct type *type = check_typedef (VALUE_TYPE (val));
- int len = TYPE_LENGTH (type);
-
- if (VALUE_LVAL (val) == lval_memory)
- {
- next_address = VALUE_ADDRESS (val) + len;
- next_section = VALUE_BFD_SECTION (val);
- }
-
- switch (format)
- {
- case 's':
- /* FIXME: Need to handle wchar_t's here... */
- next_address = VALUE_ADDRESS (val)
- + val_print_string (VALUE_ADDRESS (val), -1, 1, gdb_stdout);
- next_section = VALUE_BFD_SECTION (val);
- 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 (" ");
- next_address = VALUE_ADDRESS (val)
- + print_insn (VALUE_ADDRESS (val), gdb_stdout);
- next_section = VALUE_BFD_SECTION (val);
- break;
-
- default:
- if (format == 0
- || TYPE_CODE (type) == TYPE_CODE_ARRAY
- || TYPE_CODE (type) == TYPE_CODE_STRING
- || TYPE_CODE (type) == TYPE_CODE_STRUCT
- || TYPE_CODE (type) == TYPE_CODE_UNION)
- value_print (val, gdb_stdout, format, Val_pretty_default);
- else
- print_scalar_formatted (VALUE_CONTENTS (val), type,
- format, size, gdb_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;
- GDB_FILE *stream;
-{
- LONGEST val_long;
- unsigned int len = TYPE_LENGTH (type);
-
- if (len > sizeof (LONGEST)
- && (format == 't'
- || format == 'c'
- || format == 'o'
- || format == 'u'
- || format == 'd'
- || format == 'x'))
- {
- if (! TYPE_UNSIGNED (type)
- || ! extract_long_unsigned_integer (valaddr, len, &val_long))
- {
- /* We can't print it normally, but we can print it in hex.
- Printing it in the wrong radix is more useful than saying
- "use /x, you dummy". */
- /* FIXME: we could also do octal or binary if that was the
- desired format. */
- /* FIXME: we should be using the size field to give us a
- minimum field width to print. */
- val_print_type_code_int (type, valaddr, stream);
- return;
- }
-
- /* If we get here, extract_long_unsigned_integer set val_long. */
- }
- else if (format != 'f')
- val_long = unpack_long (type, valaddr);
-
- /* If we are printing it as unsigned, truncate it in case it is actually
- a negative signed value (e.g. "print/u (short)-1" should print 65535
- (if shorts are 16 bits) instead of 4294967295). */
- if (format != 'd')
- {
- if (len < sizeof (LONGEST))
- val_long &= ((LONGEST) 1 << HOST_CHAR_BIT * len) - 1;
- }
-
- switch (format)
- {
- case 'x':
- 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':
- print_longest (stream, 'd', 1, val_long);
- break;
-
- case 'u':
- print_longest (stream, 'u', 0, val_long);
- break;
-
- case 'o':
- if (val_long)
- print_longest (stream, 'o', 1, val_long);
- else
- fprintf_filtered (stream, "0");
- break;
-
- case 'a':
- print_address (unpack_pointer (type, valaddr), stream);
- break;
-
- case 'c':
- value_print (value_from_longest (builtin_type_char, val_long), stream, 0,
- Val_pretty_default);
- break;
-
- case 'f':
- 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:
- 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:
- error ("Undefined output format \"%c\".", format);
- }
-}
-
-/* Specify default address for `x' command.
- `info lines' uses this. */
-
-void
-set_next_address (addr)
- CORE_ADDR addr;
-{
- next_address = addr;
-
- /* Make address available to the user as $_. */
- set_internalvar (lookup_internalvar ("_"),
- 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.
- Optionally also print source file and line number, if available.
- 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;
- GDB_FILE *stream;
- int do_demangle;
- char *leadin;
-{
- struct minimal_symbol *msymbol;
- struct symbol *symbol;
- struct symtab *symtab = 0;
- CORE_ADDR name_location = 0;
- char *name = "";
- asection *section = 0;
- int unmapped = 0;
-
- /* Determine if the address is in an overlay, and whether it is mapped. */
- if (overlay_debugging)
- {
- section = find_pc_overlay (addr);
- if (pc_in_unmapped_range (addr, section))
- {
- unmapped = 1;
- addr = overlay_mapped_address (addr, section);
- }
- }
-
- /* On some targets, add in extra "flag" bits to PC for
- disassembly. This should ensure that "rounding errors" in
- symbol addresses that are masked for disassembly favour the
- the correct symbol. */
-
-#ifdef GDB_TARGET_UNMASK_DISAS_PC
- addr = GDB_TARGET_UNMASK_DISAS_PC (addr);
-#endif
-
- /* First try to find the address in the symbol table, then
- in the minsyms. Take the closest one. */
-
- /* This is defective in the sense that it only finds text symbols. So
- really this is kind of pointless--we should make sure that the
- minimal symbols have everything we need (by changing that we could
- save some memory, but for many debug format--ELF/DWARF or
- anything/stabs--it would be inconvenient to eliminate those minimal
- symbols anyway). */
- msymbol = lookup_minimal_symbol_by_pc_section (addr, section);
- symbol = find_pc_sect_function (addr, section);
-
- if (symbol)
- {
- name_location = BLOCK_START (SYMBOL_BLOCK_VALUE (symbol));
- if (do_demangle)
- name = SYMBOL_SOURCE_NAME (symbol);
- else
- name = SYMBOL_LINKAGE_NAME (symbol);
- }
-
- if (msymbol != NULL)
- {
- if (SYMBOL_VALUE_ADDRESS (msymbol) > name_location || symbol == NULL)
- {
- /* The msymbol is closer to the address than the symbol;
- use the msymbol instead. */
- symbol = 0;
- symtab = 0;
- name_location = SYMBOL_VALUE_ADDRESS (msymbol);
- if (do_demangle)
- name = SYMBOL_SOURCE_NAME (msymbol);
- else
- name = SYMBOL_LINKAGE_NAME (msymbol);
- }
- }
- if (symbol == NULL && msymbol == NULL)
- return;
-
- /* On some targets, mask out extra "flag" bits from PC for handsome
- disassembly. */
-
-#ifdef GDB_TARGET_MASK_DISAS_PC
- name_location = GDB_TARGET_MASK_DISAS_PC (name_location);
- addr = GDB_TARGET_MASK_DISAS_PC (addr);
-#endif
-
- /* 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);
- if (unmapped)
- fputs_filtered ("<*", stream);
- else
- fputs_filtered ("<", stream);
- fputs_filtered (name, stream);
- if (addr != name_location)
- fprintf_filtered (stream, "+%u", (unsigned int)(addr - name_location));
-
- /* Append source filename and line number if desired. Give specific
- line # of this addr, if we have it; else line # of the nearest symbol. */
- if (print_symbol_filename)
- {
- struct symtab_and_line sal;
-
- sal = find_pc_sect_line (addr, section, 0);
-
- if (sal.symtab)
- fprintf_filtered (stream, " at %s:%d", sal.symtab->filename, sal.line);
- else if (symtab && symbol && symbol->line)
- fprintf_filtered (stream, " at %s:%d", symtab->filename, symbol->line);
- else if (symtab)
- fprintf_filtered (stream, " in %s", symtab->filename);
- }
- if (unmapped)
- fputs_filtered ("*>", stream);
- else
- fputs_filtered (">", stream);
-}
-
-/* Print address ADDR on STREAM. USE_LOCAL means the same thing as for
- print_longest. */
-void
-print_address_numeric (addr, use_local, stream)
- CORE_ADDR addr;
- int use_local;
- GDB_FILE *stream;
-{
- /* This assumes a CORE_ADDR can fit in a LONGEST. Probably a safe
- assumption. */
- print_longest (stream, 'x', use_local, (ULONGEST) addr);
-}
-
-/* Print address ADDR symbolically on STREAM.
- First print it as a number. Then perhaps print
- <SYMBOL + OFFSET> after the number. */
-
-void
-print_address (addr, stream)
- CORE_ADDR addr;
- GDB_FILE *stream;
-{
- print_address_numeric (addr, 1, stream);
- print_address_symbolic (addr, stream, asm_demangle, " ");
-}
-
-/* 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;
- GDB_FILE *stream;
- int do_demangle;
-{
- if (addr == 0)
- {
- fprintf_filtered (stream, "0");
- }
- else if (addressprint)
- {
- print_address_numeric (addr, 1, stream);
- print_address_symbolic (addr, stream, do_demangle, " ");
- }
- else
- {
- print_address_symbolic (addr, stream, do_demangle, "");
- }
-}
-
-
-/* These are the types that $__ will get after an examine command of one
- of these sizes. */
-
-static struct type *examine_i_type;
-
-static struct type *examine_b_type;
-static struct type *examine_h_type;
-static struct type *examine_w_type;
-static struct type *examine_g_type;
-
-/* Examine data at address ADDR in format FMT.
- Fetch it from memory and print on gdb_stdout. */
-
-static void
-do_examine (fmt, addr, sect)
- struct format_data fmt;
- CORE_ADDR addr;
- asection *sect;
-{
- register char format = 0;
- register char size;
- register int count = 1;
- struct type *val_type = NULL;
- register int i;
- register int maxelts;
-
- format = fmt.format;
- size = fmt.size;
- count = fmt.count;
- next_address = addr;
- next_section = sect;
-
- /* String or instruction format implies fetch single bytes
- regardless of the specified size. */
- if (format == 's' || format == 'i')
- size = 'b';
-
- if (format == 'i')
- val_type = examine_i_type;
- else if (size == 'b')
- val_type = examine_b_type;
- else if (size == 'h')
- val_type = examine_h_type;
- else if (size == 'w')
- val_type = examine_w_type;
- else if (size == 'g')
- val_type = examine_g_type;
-
- maxelts = 8;
- if (size == 'w')
- maxelts = 4;
- if (size == 'g')
- maxelts = 2;
- if (format == 's' || format == 'i')
- maxelts = 1;
-
- /* Print as many objects as specified in COUNT, at most maxelts per line,
- with the address of the next one at the start of each line. */
-
- while (count > 0)
- {
- QUIT;
- print_address (next_address, gdb_stdout);
- printf_filtered (":");
- for (i = maxelts;
- i > 0 && count > 0;
- i--, count--)
- {
- printf_filtered ("\t");
- /* Note that print_formatted sets next_address for the next
- object. */
- last_examine_address = next_address;
- /* The value to be displayed is not fetched greedily.
- Instead, to avoid the posibility of a fetched value not
- being used, its retreval is delayed until the print code
- uses it. When examining an instruction stream, the
- disassembler will perform its own memory fetch using just
- the address stored in LAST_EXAMINE_VALUE. FIXME: Should
- the disassembler be modified so that LAST_EXAMINE_VALUE
- is left with the byte sequence from the last complete
- instruction fetched from memory? */
- last_examine_value = value_at_lazy (val_type, next_address, sect);
- print_formatted (last_examine_value, format, size);
- }
- printf_filtered ("\n");
- gdb_flush (gdb_stdout);
- }
-}
-
-static void
-validate_format (fmt, cmdname)
- struct format_data fmt;
- char *cmdname;
-{
- if (fmt.size != 0)
- error ("Size letters are meaningless in \"%s\" command.", cmdname);
- if (fmt.count != 1)
- error ("Item count other than 1 is meaningless in \"%s\" command.",
- cmdname);
- if (fmt.format == 'i' || fmt.format == 's')
- error ("Format letter \"%c\" is meaningless in \"%s\" command.",
- 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_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_ptr val;
- struct format_data fmt;
- int cleanup = 0;
-
- /* Pass inspect flag to the rest of the print routines in a global (sigh). */
- inspect_it = inspect;
-
- if (exp && *exp == '/')
- {
- exp++;
- fmt = decode_format (&exp, last_format, 0);
- validate_format (fmt, "print");
- last_format = format = fmt.format;
- }
- else
- {
- fmt.count = 1;
- fmt.format = 0;
- fmt.size = 0;
- }
-
- if (exp && *exp)
- {
- extern int objectprint;
- struct type *type;
- expr = parse_expression (exp);
- old_chain = make_cleanup ((make_cleanup_func) 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_ptr 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);
-
- if (voidprint || (val && VALUE_TYPE (val) &&
- TYPE_CODE (VALUE_TYPE (val)) != TYPE_CODE_VOID))
- {
- int histindex = record_latest_value (val);
-
- if (histindex >= 0)
- annotate_value_history_begin (histindex, VALUE_TYPE (val));
- else
- annotate_value_begin (VALUE_TYPE (val));
-
- if (inspect)
- printf_unfiltered ("\031(gdb-makebuffer \"%s\" %d '(\"", exp, histindex);
- else
- if (histindex >= 0) printf_filtered ("$%d = ", histindex);
-
- if (histindex >= 0)
- annotate_value_history_value ();
-
- print_formatted (val, format, fmt.size);
- printf_filtered ("\n");
-
- if (histindex >= 0)
- annotate_value_history_end ();
- else
- annotate_value_end ();
-
- if (inspect)
- printf_unfiltered("\") )\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 */
-void
-output_command (exp, from_tty)
- char *exp;
- int from_tty;
-{
- struct expression *expr;
- register struct cleanup *old_chain;
- register char format = 0;
- register value_ptr val;
- struct format_data fmt;
-
- if (exp && *exp == '/')
- {
- exp++;
- fmt = decode_format (&exp, 0, 0);
- validate_format (fmt, "output");
- format = fmt.format;
- }
-
- expr = parse_expression (exp);
- old_chain = make_cleanup ((make_cleanup_func) free_current_contents, &expr);
-
- val = evaluate_expression (expr);
-
- annotate_value_begin (VALUE_TYPE (val));
-
- print_formatted (val, format, fmt.size);
-
- annotate_value_end ();
-
- do_cleanups (old_chain);
-}
-
-/* ARGSUSED */
-static void
-set_command (exp, from_tty)
- char *exp;
- int from_tty;
-{
- struct expression *expr = parse_expression (exp);
- register struct cleanup *old_chain
- = make_cleanup ((make_cleanup_func) free_current_contents, &expr);
- evaluate_expression (expr);
- do_cleanups (old_chain);
-}
-
-/* ARGSUSED */
-static void
-sym_info (arg, from_tty)
- char *arg;
- int from_tty;
-{
- struct minimal_symbol *msymbol;
- struct objfile *objfile;
- struct obj_section *osect;
- asection *sect;
- CORE_ADDR addr, sect_addr;
- int matches = 0;
- unsigned int offset;
-
- if (!arg)
- error_no_arg ("address");
-
- addr = parse_and_eval_address (arg);
- ALL_OBJSECTIONS (objfile, osect)
- {
- sect = osect->the_bfd_section;
- sect_addr = overlay_mapped_address (addr, sect);
-
- if (osect->addr <= sect_addr && sect_addr < osect->endaddr &&
- (msymbol = lookup_minimal_symbol_by_pc_section (sect_addr, sect)))
- {
- matches = 1;
- offset = sect_addr - SYMBOL_VALUE_ADDRESS (msymbol);
- if (offset)
- printf_filtered ("%s + %u in ",
- SYMBOL_SOURCE_NAME (msymbol), offset);
- else
- printf_filtered ("%s in ",
- SYMBOL_SOURCE_NAME (msymbol));
- if (pc_in_unmapped_range (addr, sect))
- printf_filtered ("load address range of ");
- if (section_is_overlay (sect))
- printf_filtered ("%s overlay ",
- section_is_mapped (sect) ? "mapped" : "unmapped");
- printf_filtered ("section %s", sect->name);
- printf_filtered ("\n");
- }
- }
- if (matches == 0)
- printf_filtered ("No symbol matches %s.\n", arg);
-}
-
-/* ARGSUSED */
-static void
-address_info (exp, from_tty)
- char *exp;
- int from_tty;
-{
- register struct symbol *sym;
- register struct minimal_symbol *msymbol;
- register long val;
- register long basereg;
- asection *section;
- CORE_ADDR load_addr;
- 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,
- &is_a_field_of_this, (struct symtab **)NULL);
- if (sym == NULL)
- {
- if (is_a_field_of_this)
- {
- printf_filtered ("Symbol \"");
- fprintf_symbol_filtered (gdb_stdout, exp,
- current_language->la_language, DMGL_ANSI);
- printf_filtered ("\" is a field of the local class variable `this'\n");
- return;
- }
-
- msymbol = lookup_minimal_symbol (exp, NULL, NULL);
-
- if (msymbol != NULL)
- {
- load_addr = SYMBOL_VALUE_ADDRESS (msymbol);
-
- printf_filtered ("Symbol \"");
- fprintf_symbol_filtered (gdb_stdout, exp,
- current_language->la_language, DMGL_ANSI);
- printf_filtered ("\" is at ");
- print_address_numeric (load_addr, 1, gdb_stdout);
- printf_filtered (" in a file compiled without debugging");
- section = SYMBOL_BFD_SECTION (msymbol);
- if (section_is_overlay (section))
- {
- load_addr = overlay_unmapped_address (load_addr, section);
- printf_filtered (",\n -- loaded at ");
- print_address_numeric (load_addr, 1, gdb_stdout);
- printf_filtered (" in overlay section %s", section->name);
- }
- printf_filtered (".\n");
- }
- else
- error ("No symbol \"%s\" in current context.", exp);
- return;
- }
-
- printf_filtered ("Symbol \"");
- fprintf_symbol_filtered (gdb_stdout, SYMBOL_NAME (sym),
- current_language->la_language, DMGL_ANSI);
- printf_filtered ("\" is ");
- val = SYMBOL_VALUE (sym);
- basereg = SYMBOL_BASEREG (sym);
- section = SYMBOL_BFD_SECTION (sym);
-
- switch (SYMBOL_CLASS (sym))
- {
- case LOC_CONST:
- case LOC_CONST_BYTES:
- printf_filtered ("constant");
- break;
-
- case LOC_LABEL:
- printf_filtered ("a label at address ");
- print_address_numeric (load_addr = SYMBOL_VALUE_ADDRESS (sym),
- 1, gdb_stdout);
- if (section_is_overlay (section))
- {
- load_addr = overlay_unmapped_address (load_addr, section);
- printf_filtered (",\n -- loaded at ");
- print_address_numeric (load_addr, 1, gdb_stdout);
- printf_filtered (" in overlay section %s", section->name);
- }
- break;
-
- case LOC_REGISTER:
- printf_filtered ("a variable in register %s", REGISTER_NAME (val));
- break;
-
- case LOC_STATIC:
- printf_filtered ("static storage at address ");
- print_address_numeric (load_addr = SYMBOL_VALUE_ADDRESS (sym),
- 1, gdb_stdout);
- if (section_is_overlay (section))
- {
- load_addr = overlay_unmapped_address (load_addr, section);
- printf_filtered (",\n -- loaded at ");
- print_address_numeric (load_addr, 1, gdb_stdout);
- printf_filtered (" in overlay section %s", section->name);
- }
- break;
-
- case LOC_REGPARM:
- printf_filtered ("an argument in register %s", REGISTER_NAME (val));
- break;
-
- case LOC_REGPARM_ADDR:
- printf_filtered ("address of an argument in register %s", REGISTER_NAME (val));
- break;
-
- case LOC_ARG:
- printf_filtered ("an argument at offset %ld", val);
- break;
-
- case LOC_LOCAL_ARG:
- printf_filtered ("an argument at frame offset %ld", val);
- break;
-
- case LOC_LOCAL:
- printf_filtered ("a local variable at frame offset %ld", val);
- break;
-
- case LOC_REF_ARG:
- printf_filtered ("a reference argument at offset %ld", val);
- break;
-
- case LOC_BASEREG:
- printf_filtered ("a variable at offset %ld from register %s",
- val, REGISTER_NAME (basereg));
- break;
-
- case LOC_BASEREG_ARG:
- printf_filtered ("an argument at offset %ld from register %s",
- val, REGISTER_NAME (basereg));
- break;
-
- case LOC_TYPEDEF:
- printf_filtered ("a typedef");
- break;
-
- case LOC_BLOCK:
- printf_filtered ("a function at address ");
-#ifdef GDB_TARGET_MASK_DISAS_PC
- print_address_numeric
- (load_addr= GDB_TARGET_MASK_DISAS_PC (BLOCK_START (SYMBOL_BLOCK_VALUE (sym))),
- 1, gdb_stdout);
-#else
- print_address_numeric (load_addr=BLOCK_START (SYMBOL_BLOCK_VALUE (sym)),
- 1, gdb_stdout);
-#endif
- if (section_is_overlay (section))
- {
- load_addr = overlay_unmapped_address (load_addr, section);
- printf_filtered (",\n -- loaded at ");
- print_address_numeric (load_addr, 1, gdb_stdout);
- printf_filtered (" in overlay section %s", section->name);
- }
- break;
-
- case LOC_UNRESOLVED:
- {
- struct minimal_symbol *msym;
-
- msym = lookup_minimal_symbol (SYMBOL_NAME (sym), NULL, NULL);
- if (msym == NULL)
- printf_filtered ("unresolved");
- else
- {
- section = SYMBOL_BFD_SECTION (msym);
- printf_filtered ("static storage at address ");
- print_address_numeric (load_addr = SYMBOL_VALUE_ADDRESS (msym),
- 1, gdb_stdout);
- if (section_is_overlay (section))
- {
- load_addr = overlay_unmapped_address (load_addr, section);
- printf_filtered (",\n -- loaded at ");
- print_address_numeric (load_addr, 1, gdb_stdout);
- printf_filtered (" in overlay section %s", section->name);
- }
- }
- }
- break;
-
- case LOC_OPTIMIZED_OUT:
- printf_filtered ("optimized out");
- break;
-
- default:
- printf_filtered ("of unknown (botched) type");
- break;
- }
- printf_filtered (".\n");
-}
-
-void
-x_command (exp, from_tty)
- char *exp;
- int from_tty;
-{
- struct expression *expr;
- struct format_data fmt;
- struct cleanup *old_chain;
- struct value *val;
-
- fmt.format = last_format;
- fmt.size = last_size;
- fmt.count = 1;
-
- if (exp && *exp == '/')
- {
- exp++;
- fmt = decode_format (&exp, last_format, last_size);
- }
-
- /* If we have an expression, evaluate it and use it as the address. */
-
- if (exp != 0 && *exp != 0)
- {
- 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 ((make_cleanup_func) free_current_contents,
- &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);
- if (VALUE_BFD_SECTION (val))
- next_section = VALUE_BFD_SECTION (val);
- do_cleanups (old_chain);
- }
-
- do_examine (fmt, next_address, next_section);
-
- /* If the examine succeeds, we remember its size and format for next time. */
- last_size = fmt.size;
- last_format = fmt.format;
-
- /* Set a couple of internal variables if appropriate. */
- if (last_examine_value)
- {
- /* 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 $__.*/
- /* If the last value has not been fetched from memory then don't
- fetch it now - instead mark it by voiding the $__ variable. */
- if (VALUE_LAZY (last_examine_value))
- set_internalvar (lookup_internalvar ("__"),
- allocate_value (builtin_type_void));
- else
- set_internalvar (lookup_internalvar ("__"), last_examine_value);
- }
-}
-
-
-/* Add an expression to the auto-display chain.
- Specify the expression. */
-
-static void
-display_command (exp, from_tty)
- char *exp;
- int from_tty;
-{
- struct format_data fmt;
- register struct expression *expr;
- register struct display *new;
-
- if (exp == 0)
- {
- do_displays ();
- return;
- }
-
- if (*exp == '/')
- {
- exp++;
- fmt = decode_format (&exp, 0, 0);
- if (fmt.size && fmt.format == 0)
- fmt.format = 'x';
- if (fmt.format == 'i' || fmt.format == 's')
- fmt.size = 'b';
- }
- else
- {
- fmt.format = 0;
- fmt.size = 0;
- fmt.count = 0;
- }
-
- 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 ();
-}
-
-static void
-free_display (d)
- struct display *d;
-{
- free ((PTR)d->exp);
- free ((PTR)d);
-}
-
-/* Clear out the display_chain.
- Done when new symtabs are loaded, since this invalidates
- the types stored in many expressions. */
-
-void
-clear_displays ()
-{
- register struct display *d;
-
- while ((d = display_chain) != NULL)
- {
- free ((PTR)d->exp);
- display_chain = d->next;
- 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, from_tty)
- char *args;
- int from_tty;
-{
- register char *p = args;
- register char *p1;
- register int num;
-
- if (args == 0)
- {
- if (query ("Delete all auto-display expressions? "))
- clear_displays ();
- dont_repeat ();
- return;
- }
-
- while (*p)
- {
- p1 = p;
- while (*p1 >= '0' && *p1 <= '9') p1++;
- if (*p1 && *p1 != ' ' && *p1 != '\t')
- error ("Arguments must be display numbers.");
-
- num = atoi (p);
-
- delete_display (num);
-
- p = p1;
- while (*p == ' ' || *p == '\t') p++;
- }
- dont_repeat ();
-}
-
-/* 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;
-
- annotate_display_begin ();
- printf_filtered ("%d", d->number);
- annotate_display_number_end ();
- printf_filtered (": ");
- if (d->format.size)
- {
- CORE_ADDR addr;
- value_ptr val;
-
- annotate_display_format ();
-
- 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 (" ");
-
- annotate_display_expression ();
-
- print_expression (d->exp, gdb_stdout);
- annotate_display_expression_end ();
-
- if (d->format.count != 1)
- printf_filtered ("\n");
- else
- printf_filtered (" ");
-
- val = evaluate_expression (d->exp);
- addr = value_as_pointer (val);
- if (d->format.format == 'i')
- addr = ADDR_BITS_REMOVE (addr);
-
- annotate_display_value ();
-
- do_examine (d->format, addr, VALUE_BFD_SECTION (val));
- }
- else
- {
- annotate_display_format ();
-
- if (d->format.format)
- printf_filtered ("/%c ", d->format.format);
-
- annotate_display_expression ();
-
- print_expression (d->exp, gdb_stdout);
- annotate_display_expression_end ();
-
- printf_filtered (" = ");
-
- annotate_display_expression ();
-
- print_formatted (evaluate_expression (d->exp),
- d->format.format, d->format.size);
- printf_filtered ("\n");
- }
-
- annotate_display_end ();
-
- gdb_flush (gdb_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_unfiltered ("No display number %d.\n", num);
-}
-
-void
-disable_current_display ()
-{
- if (current_display_number >= 0)
- {
- disable_display (current_display_number);
- fprintf_unfiltered (gdb_stderr, "Disabling display %d to avoid infinite recursion.\n",
- current_display_number);
- }
- current_display_number = -1;
-}
-
-static void
-display_info (ignore, from_tty)
- char *ignore;
- int from_tty;
-{
- register struct display *d;
-
- if (!display_chain)
- printf_unfiltered ("There are no auto-display expressions now.\n");
- else
- printf_filtered ("Auto-display expressions now in effect:\n\
-Num Enb Expression\n");
-
- for (d = display_chain; d; d = d->next)
- {
- printf_filtered ("%d: %c ", d->number, "ny"[(int)d->status]);
- if (d->format.size)
- printf_filtered ("/%d%c%c ", d->format.count, d->format.size,
- d->format.format);
- else if (d->format.format)
- printf_filtered ("/%c ", d->format.format);
- print_expression (d->exp, gdb_stdout);
- if (d->block && !contained_in (get_selected_block (), d->block))
- printf_filtered (" (cannot be evaluated in the current context)");
- printf_filtered ("\n");
- gdb_flush (gdb_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_unfiltered ("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++;
- }
-}
-
-
-/* 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;
- struct frame_info *frame;
- GDB_FILE *stream;
-{
- value_ptr val = read_var_value (var, frame);
-
- 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 info on the frame,
- and the number of args according to the stack frame (or -1 if unknown). */
-
-/* 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. */
-
-void
-print_frame_args (func, fi, num, stream)
- struct symbol *func;
- struct frame_info *fi;
- int num;
- GDB_FILE *stream;
-{
- struct block *b = NULL;
- int nsyms = 0;
- int first = 1;
- register int i;
- register struct symbol *sym;
- register value_ptr 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)
- {
- b = SYMBOL_BLOCK_VALUE (func);
- nsyms = BLOCK_NSYMS (b);
- }
-
- 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:
- {
- 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);
- }
-
- /* 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:
- case LOC_BASEREG_ARG:
- break;
-
- /* 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). */
- /* 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))
- {
- struct symbol *nsym;
- nsym = lookup_symbol
- (SYMBOL_NAME (sym),
- b, VAR_NAMESPACE, (int *)NULL, (struct symtab **)NULL);
- if (SYMBOL_CLASS (nsym) == LOC_REGISTER)
- {
- /* There is a LOC_ARG/LOC_REGISTER pair. This means that
- it was passed on the stack and loaded into a register,
- or passed in a register and stored in a stack slot.
- GDB 3.x used the LOC_ARG; GDB 4.0-4.11 used the LOC_REGISTER.
-
- Reasons for using the LOC_ARG:
- (1) because find_saved_registers may be slow for remote
- debugging,
- (2) because registers are often re-used and stack slots
- rarely (never?) are. Therefore using the stack slot is
- much less likely to print garbage.
-
- Reasons why we might want to use the LOC_REGISTER:
- (1) So that the backtrace prints the same value as
- "print foo". I see no compelling reason why this needs
- to be the case; having the backtrace print the value which
- was passed in, and "print foo" print the value as modified
- within the called function, makes perfect sense to me.
-
- Additional note: It might be nice if "info args" displayed
- both values.
- One more note: There is a case with sparc structure passing
- where we need to use the LOC_REGISTER, but this is dealt with
- by creating a single LOC_REGPARM in symbol reading. */
-
- /* Leave sym (the LOC_ARG) alone. */
- ;
- }
- else
- sym = nsym;
- }
-
- /* Print the current arg. */
- if (! first)
- fprintf_filtered (stream, ", ");
- wrap_here (" ");
-
- annotate_arg_begin ();
-
- fprintf_symbol_filtered (stream, SYMBOL_SOURCE_NAME (sym),
- SYMBOL_LANGUAGE (sym), DMGL_PARAMS | DMGL_ANSI);
- annotate_arg_name_end ();
- 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, fi);
-
- annotate_arg_value (val == NULL ? NULL : VALUE_TYPE (val));
-
- if (val)
- {
-#ifdef GDB_TARGET_IS_D10V
- if (SYMBOL_CLASS(sym) == LOC_REGPARM && TYPE_CODE(VALUE_TYPE(val)) == TYPE_CODE_PTR)
- TYPE_LENGTH(VALUE_TYPE(val)) = 2;
-#endif
- val_print (VALUE_TYPE (val), VALUE_CONTENTS (val), VALUE_ADDRESS (val),
- stream, 0, 0, 2, Val_no_prettyprint);
- }
- else
- fputs_filtered ("???", stream);
-
- annotate_arg_end ();
-
- first = 0;
- }
-
- /* 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 (fi, start, num, first, stream)
- struct frame_info *fi;
- long start;
- int num;
- int first;
- GDB_FILE *stream;
-{
- int i;
- CORE_ADDR argsaddr;
- long arg_value;
-
- for (i = 0; i < num; i++)
- {
- QUIT;
-#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, "%ld", arg_value);
-#endif /* PRINT_TYPELESS_INTEGER */
-#endif /* PRINT_NAMELESS_INTEGER */
- first = 0;
- start += sizeof (int);
- }
-}
-
-/* ARGSUSED */
-static void
-printf_command (arg, from_tty)
- char *arg;
- int from_tty;
-{
- register char *f = NULL;
- register char *s = arg;
- char *string = NULL;
- value_ptr *val_args;
- char *substrings;
- char *current_substring;
- int nargs = 0;
- int allocated_args = 20;
- struct cleanup *old_cleanups;
-
- val_args = (value_ptr *) xmalloc (allocated_args * sizeof (value_ptr));
- old_cleanups = make_cleanup ((make_cleanup_func) free_current_contents,
- &val_args);
-
- 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 '\"'.");
-
- case '\\':
- switch (c = *s++)
- {
- case '\\':
- *f++ = '\\';
- break;
- case 'a':
-#ifdef __STDC__
- *f++ = '\a';
-#else
- *f++ = '\007'; /* Bell */
-#endif
- break;
- case 'b':
- *f++ = '\b';
- break;
- case 'f':
- *f++ = '\f';
- break;
- case 'n':
- *f++ = '\n';
- break;
- case 'r':
- *f++ = '\r';
- break;
- case 't':
- *f++ = '\t';
- break;
- case 'v':
- *f++ = '\v';
- break;
- case '"':
- *f++ = '"';
- break;
- default:
- /* ??? TODO: handle other escape sequences */
- error ("Unrecognized escape character \\%c in format string.",
- c);
- }
- 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++;
-
- /* Need extra space for the '\0's. Doubling the size is sufficient. */
- substrings = alloca (strlen (string) * 2);
- current_substring = substrings;
-
- {
- /* Now scan the string for %-specs and see what kinds of args they want.
- argclass[I] classifies the %-specs so we can give printf_filtered
- something of the right size. */
-
- enum argclass {no_arg, int_arg, string_arg, double_arg, long_long_arg};
- enum argclass *argclass;
- enum argclass this_argclass;
- char *last_arg;
- int nargs_wanted;
- int lcount;
- int i;
-
- argclass = (enum argclass *) alloca (strlen (s) * sizeof *argclass);
- nargs_wanted = 0;
- f = string;
- last_arg = string;
- while (*f)
- if (*f++ == '%')
- {
- lcount = 0;
- while (strchr ("0123456789.hlL-+ #", *f))
- {
- if (*f == 'l' || *f == 'L')
- lcount++;
- f++;
- }
- switch (*f)
- {
- case 's':
- this_argclass = string_arg;
- break;
-
- case 'e':
- case 'f':
- case 'g':
- this_argclass = double_arg;
- break;
-
- case '*':
- error ("`*' not supported for precision or width in printf");
-
- case 'n':
- error ("Format specifier `n' not supported in printf");
-
- case '%':
- this_argclass = no_arg;
- break;
-
- default:
- if (lcount > 1)
- this_argclass = long_long_arg;
- else
- this_argclass = int_arg;
- break;
- }
- f++;
- if (this_argclass != no_arg)
- {
- strncpy (current_substring, last_arg, f - last_arg);
- current_substring += f - last_arg;
- *current_substring++ = '\0';
- last_arg = f;
- argclass[nargs_wanted++] = this_argclass;
- }
- }
-
- /* 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_ptr *) xrealloc ((char *) val_args,
- (allocated_args *= 2)
- * sizeof (value_ptr));
- 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)
- {
- struct type *type = VALUE_TYPE (val_args[nargs]);
- if (TYPE_LENGTH (type) == sizeof (float))
- VALUE_TYPE (val_args[nargs]) = builtin_type_float;
- if (TYPE_LENGTH (type) == 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 actually print them. */
- current_substring = substrings;
- for (i = 0; i < nargs; i++)
- {
- switch (argclass[i])
- {
- case 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_section (tem + j, &c, 1,
- VALUE_BFD_SECTION (val_args[i]));
- if (c == 0)
- break;
- }
-
- /* Copy the string contents into a string inside GDB. */
- str = (char *) alloca (j + 1);
- read_memory_section (tem, str, j, VALUE_BFD_SECTION (val_args[i]));
- str[j] = 0;
-
- printf_filtered (current_substring, str);
- }
- break;
- case double_arg:
- {
- double val = value_as_double (val_args[i]);
- printf_filtered (current_substring, val);
- break;
- }
- case long_long_arg:
-#if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG)
- {
- long long val = value_as_long (val_args[i]);
- printf_filtered (current_substring, val);
- break;
- }
-#else
- error ("long long not supported in printf");
-#endif
- case int_arg:
- {
- /* FIXME: there should be separate int_arg and long_arg. */
- long val = value_as_long (val_args[i]);
- printf_filtered (current_substring, val);
- break;
- }
- default:
- error ("internal error in printf_command");
- }
- /* Skip to the next substring. */
- current_substring += strlen (current_substring) + 1;
- }
- /* Print the portion of the format string after the last argument. */
- printf_filtered (last_arg);
- }
- do_cleanups (old_cleanups);
-}
-
-/* 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;
- char *name;
- CORE_ADDR pc, pc_masked;
- char *space_index;
-
- name = NULL;
- if (!arg)
- {
- if (!selected_frame)
- error ("No frame selected.\n");
-
- pc = get_frame_pc (selected_frame);
- if (find_pc_partial_function (pc, &name, &low, &high) == 0)
- error ("No function contains program counter for selected frame.\n");
- low += FUNCTION_START_OFFSET;
- }
- else if (!(space_index = (char *) strchr (arg, ' ')))
- {
- /* One argument. */
- pc = parse_and_eval_address (arg);
- if (find_pc_partial_function (pc, &name, &low, &high) == 0)
- error ("No function contains specified address.\n");
- low += FUNCTION_START_OFFSET;
- }
- 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 (name != NULL)
- {
- printf_filtered ("for function %s:\n", name);
- }
- else
- {
- printf_filtered ("from ");
- print_address_numeric (low, 1, gdb_stdout);
- printf_filtered (" to ");
- print_address_numeric (high, 1, gdb_stdout);
- printf_filtered (":\n");
- }
-
- /* Dump the specified range. */
- pc = low;
-
-#ifdef GDB_TARGET_MASK_DISAS_PC
- pc_masked = GDB_TARGET_MASK_DISAS_PC (pc);
-#else
- pc_masked = pc;
-#endif
-
- while (pc_masked < high)
- {
- QUIT;
- print_address (pc_masked, gdb_stdout);
- printf_filtered (":\t");
- /* We often wrap here if there are long symbolic names. */
- wrap_here (" ");
- pc += print_insn (pc, gdb_stdout);
- printf_filtered ("\n");
-
-#ifdef GDB_TARGET_MASK_DISAS_PC
- pc_masked = GDB_TARGET_MASK_DISAS_PC (pc);
-#else
- pc_masked = pc;
-#endif
- }
- printf_filtered ("End of assembler dump.\n");
- gdb_flush (gdb_stdout);
-}
-
-/* Print the instruction at address MEMADDR in debugged memory,
- on STREAM. Returns length of the instruction, in bytes. */
-
-static int
-print_insn (memaddr, stream)
- CORE_ADDR memaddr;
- GDB_FILE *stream;
-{
- if (TARGET_BYTE_ORDER == BIG_ENDIAN)
- TARGET_PRINT_INSN_INFO->endian = BFD_ENDIAN_BIG;
- else
- TARGET_PRINT_INSN_INFO->endian = BFD_ENDIAN_LITTLE;
-
- if (TARGET_ARCHITECTURE != NULL)
- TARGET_PRINT_INSN_INFO->mach = TARGET_ARCHITECTURE->mach;
- /* else: should set .mach=0 but some disassemblers don't grok this */
-
- return TARGET_PRINT_INSN (memaddr, TARGET_PRINT_INSN_INFO);
-}
-
-
-void
-_initialize_printcmd ()
-{
- current_display_number = -1;
-
- add_info ("address", address_info,
- "Describe where symbol SYM is stored.");
-
- add_info ("symbol", sym_info,
- "Describe what symbol is at location ADDR.\n\
-Only for symbols with fixed locations (global or static scope).");
-
- add_com ("x", class_vars, x_command,
- concat ("Examine memory: x/FMT ADDRESS.\n\
-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\
- 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\
-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\".", NULL));
-
- 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_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\
-\"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\
-/FMT \"i\" or \"s\" or including a size-letter is allowed,\n\
-as in the \"x\" command, and then EXP is used to get the address to examine\n\
-and examining is done as in the \"x\" command.\n\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_prefix_cmd ("set", class_vars, set_command,
-concat ("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.", NULL),
- &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 $), or an actual\n\
-variable in the program being debugged. EXP is any valid expression.\n\
-This may usually be abbreviated to simply \"set\".",
- &setlist);
-
- add_com ("print", class_vars, print_command,
- concat ("Print value of expression EXP.\n\
-Variables accessible are those of the lexical environment of the selected\n\
-stack frame, plus all those whose scope is global or an entire file.\n\
-\n\
-$NUM gets previous value number NUM. $ and $$ are the last two values.\n\
-$$NUM refers to NUM'th value back from the last one.\n\
-Names starting with $ refer to registers (with the values they would have\n",
-"if the program were to return to the stack frame now selected, restoring\n\
-all registers saved by frames farther in) or else to debugger\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\
-@ 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\
-where FOO is stored, etc. FOO must be an expression whose value\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).", NULL));
- add_com_alias ("p", "print", class_vars, 1);
-
- 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);
- add_show_from_set (
- add_set_cmd ("symbol-filename", no_class, var_boolean,
- (char *)&print_symbol_filename,
- "Set printing of source filename and line number with <symbol>.",
- &setprintlist),
- &showprintlist);
-
- /* For examine/instruction a single byte quantity is specified as
- the data. This avoids problems with value_at_lazy() requiring a
- valid data type (and rejecting VOID). */
- examine_i_type = init_type (TYPE_CODE_INT, 1, 0, "examine_i_type", NULL);
-
- examine_b_type = init_type (TYPE_CODE_INT, 1, 0, "examine_b_type", NULL);
- examine_h_type = init_type (TYPE_CODE_INT, 2, 0, "examine_h_type", NULL);
- examine_w_type = init_type (TYPE_CODE_INT, 4, 0, "examine_w_type", NULL);
- examine_g_type = init_type (TYPE_CODE_INT, 8, 0, "examine_g_type", NULL);
-
- INIT_DISASSEMBLE_INFO_NO_ARCH (tm_print_insn_info, gdb_stdout, (fprintf_ftype)fprintf_filtered);
- tm_print_insn_info.flavour = bfd_target_unknown_flavour;
- tm_print_insn_info.read_memory_func = dis_asm_read_memory;
- tm_print_insn_info.memory_error_func = dis_asm_memory_error;
- tm_print_insn_info.print_address_func = dis_asm_print_address;
-}