| /* 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; |
| |
| /* 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, GDB_FILE *)); |
| |
| 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 stream 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, stream) |
| register value_ptr val; |
| register int format; |
| int size; |
| GDB_FILE *stream; |
| { |
| 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, stream); |
| 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. |
| --Yes, it does filter now, and so this is obsolete. -JB */ |
| |
| /* We often wrap here if there are long symbolic names. */ |
| wrap_here (" "); |
| next_address = VALUE_ADDRESS (val) |
| + print_insn (VALUE_ADDRESS (val), stream); |
| 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) |
| /* If format is 0, use the 'natural' format for |
| * that type of value. If the type is non-scalar, |
| * we have to use language rules to print it as |
| * a series of scalars. |
| */ |
| value_print (val, stream, format, Val_pretty_default); |
| else |
| /* User specified format, so don't look to the |
| * the type to tell us what to do. |
| */ |
| print_scalar_formatted (VALUE_CONTENTS (val), type, |
| format, size, stream); |
| } |
| } |
| |
| /* 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. */ |
| |
| if (format == 'o') |
| print_octal_chars (stream, valaddr, len); |
| else if (format == 'd') |
| print_decimal_chars (stream, valaddr, len); |
| else if (format == 't') |
| print_binary_chars (stream, valaddr, len); |
| else |
| /* replace with call to print_hex_chars? Looks |
| like val_print_type_code_int is redoing |
| work. - edie */ |
| |
| 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_true_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 buf[8 * (sizeof val_long) + 32]; |
| 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--; |
| } |
| strcpy (buf, local_binary_format_prefix ()); |
| strcat (buf, cp); |
| strcat (buf, local_binary_format_suffix ()); |
| fprintf_filtered (stream, buf); |
| } |
| 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; |
| |
| if (last_examine_value) |
| value_free (last_examine_value); |
| |
| /* 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); |
| |
| if (last_examine_value) |
| release_value (last_examine_value); |
| |
| print_formatted (last_examine_value, format, size, gdb_stdout); |
| } |
| 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) |
| { |
| 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, gdb_stdout); |
| 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, gdb_stdout); |
| |
| annotate_value_end (); |
| |
| wrap_here (""); |
| gdb_flush (gdb_stdout); |
| |
| 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_INDIRECT: |
| printf_filtered ("external global (indirect addressing), at address *("); |
| print_address_numeric (load_addr = SYMBOL_VALUE_ADDRESS (sym), |
| 1, gdb_stdout); |
| printf_filtered (")"); |
| 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_THREAD_LOCAL_STATIC: |
| printf_filtered ( |
| "a thread-local variable at offset %ld from the thread base register %s", |
| val, REGISTER_NAME (basereg)); |
| 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 $__ variable. */ |
| if (VALUE_LAZY (last_examine_value)) |
| set_internalvar (lookup_internalvar ("__"), |
| allocate_value (builtin_type_void)); |
| else |
| set_internalvar (lookup_internalvar ("__"), last_examine_value); |
| } |
| } |
| |
| |
| /* Add an expression to the auto-display chain. |
| Specify the expression. */ |
| |
| static void |
| display_command (exp, from_tty) |
| char *exp; |
| int from_tty; |
| { |
| struct format_data fmt; |
| register struct expression *expr; |
| register struct display *new; |
| int display_it = 1; |
| |
| #if defined(TUI) |
| if (tui_version && *exp == '$') |
| display_it = ((TuiStatus) tuiDo ( |
| (TuiOpaqueFuncPtr) tui_vSetLayoutTo, exp) == TUI_FAILURE); |
| #endif |
| |
| if (display_it) |
| { |
| 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, gdb_stdout); |
| 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) |
| { |
| if (GDB_TARGET_IS_D10V |
| && SYMBOL_CLASS (sym) == LOC_REGPARM && TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_PTR) |
| TYPE_LENGTH (VALUE_TYPE (val)) = 2; |
| val_print (VALUE_TYPE (val), VALUE_CONTENTS (val), 0, |
| 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: /* purecov: deadcode */ |
| error ("internal error in printf_command"); /* purecov: deadcode */ |
| } |
| /* 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; |
| #if 0 |
| asection *section; |
| #endif |
| |
| 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"); |
| #if defined(TUI) |
| else if (tui_version) |
| low = (CORE_ADDR) tuiDo ((TuiOpaqueFuncPtr) tui_vGetLowDisassemblyAddress, |
| (Opaque) low, |
| (Opaque) pc); |
| #endif |
| 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"); |
| #if defined(TUI) |
| else if (tui_version) |
| low = (CORE_ADDR) tuiDo ((TuiOpaqueFuncPtr) tui_vGetLowDisassemblyAddress, |
| (Opaque) low, |
| (Opaque) pc); |
| #endif |
| #if 0 |
| if (overlay_debugging) |
| { |
| section = find_pc_overlay (pc); |
| if (pc_in_unmapped_range (pc, section)) |
| { |
| /* find_pc_partial_function will have returned low and high |
| relative to the symbolic (mapped) address range. Need to |
| translate them back to the unmapped range where PC is. */ |
| low = overlay_unmapped_address (low, section); |
| high = overlay_unmapped_address (high, section); |
| } |
| } |
| #endif |
| low += FUNCTION_START_OFFSET; |
| } |
| else |
| { |
| /* Two arguments. */ |
| *space_index = '\0'; |
| low = parse_and_eval_address (arg); |
| high = parse_and_eval_address (space_index + 1); |
| } |
| |
| #if defined(TUI) |
| if (!tui_version || |
| m_winPtrIsNull (disassemWin) || !disassemWin->generic.isVisible) |
| #endif |
| { |
| 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); |
| } |
| #if defined(TUI) |
| else |
| { |
| tuiDo ((TuiOpaqueFuncPtr) tui_vAddWinToLayout, DISASSEM_WIN); |
| tuiDo ((TuiOpaqueFuncPtr) tui_vUpdateSourceWindowsWithAddr, low); |
| } |
| #endif |
| } |
| |
| /* 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 (xdb_commands) |
| add_com_alias ("va", "disassemble", class_xdb, 0); |
| |
| #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); |
| if (dbx_commands) |
| add_com ("assign", 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)); |
| |
| /* "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); |
| |
| } |