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Diffstat (limited to 'contrib/gdb/gdb/valprint.c')
-rw-r--r-- | contrib/gdb/gdb/valprint.c | 1486 |
1 files changed, 0 insertions, 1486 deletions
diff --git a/contrib/gdb/gdb/valprint.c b/contrib/gdb/gdb/valprint.c deleted file mode 100644 index 2df49f895331..000000000000 --- a/contrib/gdb/gdb/valprint.c +++ /dev/null @@ -1,1486 +0,0 @@ -/* Print values for GDB, the GNU debugger. - - Copyright 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, - 1996, 1997, 1998, 1999, 2000, 2001, 2002 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 "symtab.h" -#include "gdbtypes.h" -#include "value.h" -#include "gdbcore.h" -#include "gdbcmd.h" -#include "target.h" -#include "language.h" -#include "annotate.h" -#include "valprint.h" -#include "floatformat.h" -#include "doublest.h" - -#include <errno.h> - -/* Prototypes for local functions */ - -static int partial_memory_read (CORE_ADDR memaddr, char *myaddr, - int len, int *errnoptr); - -static void show_print (char *, int); - -static void set_print (char *, int); - -static void set_radix (char *, int); - -static void show_radix (char *, int); - -static void set_input_radix (char *, int, struct cmd_list_element *); - -static void set_input_radix_1 (int, unsigned); - -static void set_output_radix (char *, int, struct cmd_list_element *); - -static void set_output_radix_1 (int, unsigned); - -void _initialize_valprint (void); - -/* Maximum number of chars to print for a string pointer value or vector - contents, or UINT_MAX for no limit. Note that "set print elements 0" - stores UINT_MAX in print_max, which displays in a show command as - "unlimited". */ - -unsigned int print_max; -#define PRINT_MAX_DEFAULT 200 /* Start print_max off at this value. */ - -/* Default input and output radixes, and output format letter. */ - -unsigned input_radix = 10; -unsigned output_radix = 10; -int output_format = 0; - -/* Print repeat counts if there are more than this many repetitions of an - element in an array. Referenced by the low level language dependent - print routines. */ - -unsigned int repeat_count_threshold = 10; - -/* If nonzero, stops printing of char arrays at first null. */ - -int stop_print_at_null; - -/* Controls pretty printing of structures. */ - -int prettyprint_structs; - -/* Controls pretty printing of arrays. */ - -int prettyprint_arrays; - -/* If nonzero, causes unions inside structures or other unions to be - printed. */ - -int unionprint; /* Controls printing of nested unions. */ - -/* If nonzero, causes machine addresses to be printed in certain contexts. */ - -int addressprint; /* Controls printing of machine addresses */ - - -/* Print data of type TYPE located at VALADDR (within GDB), which came from - the inferior at address ADDRESS, onto stdio stream STREAM according to - FORMAT (a letter, or 0 for natural format using TYPE). - - If DEREF_REF is nonzero, then dereference references, otherwise just print - them like pointers. - - The PRETTY parameter controls prettyprinting. - - If the data are a string pointer, returns the number of string characters - printed. - - FIXME: The data at VALADDR is in target byte order. If gdb is ever - enhanced to be able to debug more than the single target it was compiled - for (specific CPU type and thus specific target byte ordering), then - either the print routines are going to have to take this into account, - or the data is going to have to be passed into here already converted - to the host byte ordering, whichever is more convenient. */ - - -int -val_print (struct type *type, char *valaddr, int embedded_offset, - CORE_ADDR address, struct ui_file *stream, int format, int deref_ref, - int recurse, enum val_prettyprint pretty) -{ - struct type *real_type = check_typedef (type); - if (pretty == Val_pretty_default) - { - pretty = prettyprint_structs ? Val_prettyprint : Val_no_prettyprint; - } - - QUIT; - - /* Ensure that the type is complete and not just a stub. If the type is - only a stub and we can't find and substitute its complete type, then - print appropriate string and return. */ - - if (TYPE_STUB (real_type)) - { - fprintf_filtered (stream, "<incomplete type>"); - gdb_flush (stream); - return (0); - } - - return (LA_VAL_PRINT (type, valaddr, embedded_offset, address, - stream, format, deref_ref, recurse, pretty)); -} - -/* Check whether the value VAL is printable. Return 1 if it is; - return 0 and print an appropriate error message to STREAM if it - is not. */ - -static int -value_check_printable (struct value *val, struct ui_file *stream) -{ - if (val == 0) - { - fprintf_filtered (stream, "<address of value unknown>"); - return 0; - } - - if (VALUE_OPTIMIZED_OUT (val)) - { - fprintf_filtered (stream, "<value optimized out>"); - return 0; - } - - return 1; -} - -/* Print the value VAL onto stream STREAM according to FORMAT (a - letter, or 0 for natural format using TYPE). - - If DEREF_REF is nonzero, then dereference references, otherwise just print - them like pointers. - - The PRETTY parameter controls prettyprinting. - - If the data are a string pointer, returns the number of string characters - printed. - - This is a preferable interface to val_print, above, because it uses - GDB's value mechanism. */ - -int -common_val_print (struct value *val, struct ui_file *stream, int format, - int deref_ref, int recurse, enum val_prettyprint pretty) -{ - if (!value_check_printable (val, stream)) - return 0; - - return val_print (VALUE_TYPE(val), VALUE_CONTENTS_ALL (val), - VALUE_EMBEDDED_OFFSET (val), VALUE_ADDRESS (val), - stream, format, deref_ref, recurse, pretty); -} - -/* Print the value VAL in C-ish syntax on stream STREAM. - FORMAT is a format-letter, or 0 for print in natural format of data type. - If the object printed is a string pointer, returns - the number of string bytes printed. */ - -int -value_print (struct value *val, struct ui_file *stream, int format, - enum val_prettyprint pretty) -{ - if (!value_check_printable (val, stream)) - return 0; - - return LA_VALUE_PRINT (val, stream, format, pretty); -} - -/* Called by various <lang>_val_print routines to print - TYPE_CODE_INT's. TYPE is the type. VALADDR is the address of the - value. STREAM is where to print the value. */ - -void -val_print_type_code_int (struct type *type, char *valaddr, - struct ui_file *stream) -{ - if (TYPE_LENGTH (type) > sizeof (LONGEST)) - { - LONGEST val; - - if (TYPE_UNSIGNED (type) - && extract_long_unsigned_integer (valaddr, TYPE_LENGTH (type), - &val)) - { - print_longest (stream, 'u', 0, val); - } - else - { - /* Signed, or we couldn't turn an unsigned value into a - LONGEST. For signed values, one could assume two's - complement (a reasonable assumption, I think) and do - better than this. */ - print_hex_chars (stream, (unsigned char *) valaddr, - TYPE_LENGTH (type)); - } - } - else - { - print_longest (stream, TYPE_UNSIGNED (type) ? 'u' : 'd', 0, - unpack_long (type, valaddr)); - } -} - -/* Print a number according to FORMAT which is one of d,u,x,o,b,h,w,g. - The raison d'etre of this function is to consolidate printing of - LONG_LONG's into this one function. Some platforms have long longs but - don't have a printf() that supports "ll" in the format string. We handle - these by seeing if the number is representable as either a signed or - unsigned long, depending upon what format is desired, and if not we just - bail out and print the number in hex. - - The format chars b,h,w,g are from print_scalar_formatted(). If USE_LOCAL, - format it according to the current language (this should be used for most - integers which GDB prints, the exception is things like protocols where - the format of the integer is a protocol thing, not a user-visible thing). - */ - -#if defined (CC_HAS_LONG_LONG) && !defined (PRINTF_HAS_LONG_LONG) -static void print_decimal (struct ui_file * stream, char *sign, - int use_local, ULONGEST val_ulong); -static void -print_decimal (struct ui_file *stream, char *sign, int use_local, - ULONGEST val_ulong) -{ - unsigned long temp[3]; - int i = 0; - do - { - temp[i] = val_ulong % (1000 * 1000 * 1000); - val_ulong /= (1000 * 1000 * 1000); - i++; - } - while (val_ulong != 0 && i < (sizeof (temp) / sizeof (temp[0]))); - switch (i) - { - case 1: - fprintf_filtered (stream, "%s%lu", - sign, temp[0]); - break; - case 2: - fprintf_filtered (stream, "%s%lu%09lu", - sign, temp[1], temp[0]); - break; - case 3: - fprintf_filtered (stream, "%s%lu%09lu%09lu", - sign, temp[2], temp[1], temp[0]); - break; - default: - internal_error (__FILE__, __LINE__, "failed internal consistency check"); - } - return; -} -#endif - -void -print_longest (struct ui_file *stream, int format, int use_local, - LONGEST val_long) -{ -#if defined (CC_HAS_LONG_LONG) && !defined (PRINTF_HAS_LONG_LONG) - if (sizeof (long) < sizeof (LONGEST)) - { - switch (format) - { - case 'd': - { - /* Print a signed value, that doesn't fit in a long */ - if ((long) val_long != val_long) - { - if (val_long < 0) - print_decimal (stream, "-", use_local, -val_long); - else - print_decimal (stream, "", use_local, val_long); - return; - } - break; - } - case 'u': - { - /* Print an unsigned value, that doesn't fit in a long */ - if ((unsigned long) val_long != (ULONGEST) val_long) - { - print_decimal (stream, "", use_local, val_long); - return; - } - break; - } - case 'x': - case 'o': - case 'b': - case 'h': - case 'w': - case 'g': - /* Print as unsigned value, must fit completely in unsigned long */ - { - unsigned long temp = val_long; - if (temp != val_long) - { - /* Urk, can't represent value in long so print in hex. - Do shift in two operations so that if sizeof (long) - == sizeof (LONGEST) we can avoid warnings from - picky compilers about shifts >= the size of the - shiftee in bits */ - unsigned long vbot = (unsigned long) val_long; - LONGEST temp = (val_long >> (sizeof (long) * HOST_CHAR_BIT - 1)); - unsigned long vtop = temp >> 1; - fprintf_filtered (stream, "0x%lx%08lx", vtop, vbot); - return; - } - break; - } - } - } -#endif - -#if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG) - switch (format) - { - case 'd': - fprintf_filtered (stream, - use_local ? local_decimal_format_custom ("ll") - : "%lld", - (long long) val_long); - break; - case 'u': - fprintf_filtered (stream, "%llu", (long long) val_long); - break; - case 'x': - fprintf_filtered (stream, - use_local ? local_hex_format_custom ("ll") - : "%llx", - (unsigned long long) val_long); - break; - case 'o': - fprintf_filtered (stream, - use_local ? local_octal_format_custom ("ll") - : "%llo", - (unsigned long long) val_long); - break; - case 'b': - fprintf_filtered (stream, local_hex_format_custom ("02ll"), val_long); - break; - case 'h': - fprintf_filtered (stream, local_hex_format_custom ("04ll"), val_long); - break; - case 'w': - fprintf_filtered (stream, local_hex_format_custom ("08ll"), val_long); - break; - case 'g': - fprintf_filtered (stream, local_hex_format_custom ("016ll"), val_long); - break; - default: - internal_error (__FILE__, __LINE__, "failed internal consistency check"); - } -#else /* !CC_HAS_LONG_LONG || !PRINTF_HAS_LONG_LONG */ - /* In the following it is important to coerce (val_long) to a long. It does - nothing if !LONG_LONG, but it will chop off the top half (which we know - we can ignore) if the host supports long longs. */ - - switch (format) - { - case 'd': - fprintf_filtered (stream, - use_local ? local_decimal_format_custom ("l") - : "%ld", - (long) val_long); - break; - case 'u': - fprintf_filtered (stream, "%lu", (unsigned long) val_long); - break; - case 'x': - fprintf_filtered (stream, - use_local ? local_hex_format_custom ("l") - : "%lx", - (unsigned long) val_long); - break; - case 'o': - fprintf_filtered (stream, - use_local ? local_octal_format_custom ("l") - : "%lo", - (unsigned long) val_long); - break; - case 'b': - fprintf_filtered (stream, local_hex_format_custom ("02l"), - (unsigned long) val_long); - break; - case 'h': - fprintf_filtered (stream, local_hex_format_custom ("04l"), - (unsigned long) val_long); - break; - case 'w': - fprintf_filtered (stream, local_hex_format_custom ("08l"), - (unsigned long) val_long); - break; - case 'g': - fprintf_filtered (stream, local_hex_format_custom ("016l"), - (unsigned long) val_long); - break; - default: - internal_error (__FILE__, __LINE__, "failed internal consistency check"); - } -#endif /* CC_HAS_LONG_LONG || PRINTF_HAS_LONG_LONG */ -} - -/* This used to be a macro, but I don't think it is called often enough - to merit such treatment. */ -/* Convert a LONGEST to an int. This is used in contexts (e.g. number of - arguments to a function, number in a value history, register number, etc.) - where the value must not be larger than can fit in an int. */ - -int -longest_to_int (LONGEST arg) -{ - /* Let the compiler do the work */ - int rtnval = (int) arg; - - /* Check for overflows or underflows */ - if (sizeof (LONGEST) > sizeof (int)) - { - if (rtnval != arg) - { - error ("Value out of range."); - } - } - return (rtnval); -} - -/* Print a floating point value of type TYPE (not always a - TYPE_CODE_FLT), pointed to in GDB by VALADDR, on STREAM. */ - -void -print_floating (char *valaddr, struct type *type, struct ui_file *stream) -{ - DOUBLEST doub; - int inv; - const struct floatformat *fmt = NULL; - unsigned len = TYPE_LENGTH (type); - - /* If it is a floating-point, check for obvious problems. */ - if (TYPE_CODE (type) == TYPE_CODE_FLT) - fmt = floatformat_from_type (type); - if (fmt != NULL && floatformat_is_nan (fmt, valaddr)) - { - if (floatformat_is_negative (fmt, valaddr)) - fprintf_filtered (stream, "-"); - fprintf_filtered (stream, "nan("); - fputs_filtered (local_hex_format_prefix (), stream); - fputs_filtered (floatformat_mantissa (fmt, valaddr), stream); - fputs_filtered (local_hex_format_suffix (), stream); - fprintf_filtered (stream, ")"); - return; - } - - /* NOTE: cagney/2002-01-15: The TYPE passed into print_floating() - isn't necessarily a TYPE_CODE_FLT. Consequently, unpack_double - needs to be used as that takes care of any necessary type - conversions. Such conversions are of course direct to DOUBLEST - and disregard any possible target floating point limitations. - For instance, a u64 would be converted and displayed exactly on a - host with 80 bit DOUBLEST but with loss of information on a host - with 64 bit DOUBLEST. */ - - doub = unpack_double (type, valaddr, &inv); - if (inv) - { - fprintf_filtered (stream, "<invalid float value>"); - return; - } - - /* FIXME: kettenis/2001-01-20: The following code makes too much - assumptions about the host and target floating point format. */ - - /* NOTE: cagney/2002-02-03: Since the TYPE of what was passed in may - not necessarially be a TYPE_CODE_FLT, the below ignores that and - instead uses the type's length to determine the precision of the - floating-point value being printed. */ - - if (len < sizeof (double)) - fprintf_filtered (stream, "%.9g", (double) doub); - else if (len == sizeof (double)) - fprintf_filtered (stream, "%.17g", (double) doub); - else -#ifdef PRINTF_HAS_LONG_DOUBLE - fprintf_filtered (stream, "%.35Lg", doub); -#else - /* This at least wins with values that are representable as - doubles. */ - fprintf_filtered (stream, "%.17g", (double) doub); -#endif -} - -void -print_binary_chars (struct ui_file *stream, unsigned char *valaddr, - unsigned len) -{ - -#define BITS_IN_BYTES 8 - - unsigned char *p; - unsigned int i; - int b; - - /* Declared "int" so it will be signed. - * This ensures that right shift will shift in zeros. - */ - const int mask = 0x080; - - /* FIXME: We should be not printing leading zeroes in most cases. */ - - fputs_filtered (local_binary_format_prefix (), stream); - if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) - { - for (p = valaddr; - p < valaddr + len; - p++) - { - /* Every byte has 8 binary characters; peel off - * and print from the MSB end. - */ - for (i = 0; i < (BITS_IN_BYTES * sizeof (*p)); i++) - { - if (*p & (mask >> i)) - b = 1; - else - b = 0; - - fprintf_filtered (stream, "%1d", b); - } - } - } - else - { - for (p = valaddr + len - 1; - p >= valaddr; - p--) - { - for (i = 0; i < (BITS_IN_BYTES * sizeof (*p)); i++) - { - if (*p & (mask >> i)) - b = 1; - else - b = 0; - - fprintf_filtered (stream, "%1d", b); - } - } - } - fputs_filtered (local_binary_format_suffix (), stream); -} - -/* VALADDR points to an integer of LEN bytes. - * Print it in octal on stream or format it in buf. - */ -void -print_octal_chars (struct ui_file *stream, unsigned char *valaddr, unsigned len) -{ - unsigned char *p; - unsigned char octa1, octa2, octa3, carry; - int cycle; - - /* FIXME: We should be not printing leading zeroes in most cases. */ - - - /* Octal is 3 bits, which doesn't fit. Yuk. So we have to track - * the extra bits, which cycle every three bytes: - * - * Byte side: 0 1 2 3 - * | | | | - * bit number 123 456 78 | 9 012 345 6 | 78 901 234 | 567 890 12 | - * - * Octal side: 0 1 carry 3 4 carry ... - * - * Cycle number: 0 1 2 - * - * But of course we are printing from the high side, so we have to - * figure out where in the cycle we are so that we end up with no - * left over bits at the end. - */ -#define BITS_IN_OCTAL 3 -#define HIGH_ZERO 0340 -#define LOW_ZERO 0016 -#define CARRY_ZERO 0003 -#define HIGH_ONE 0200 -#define MID_ONE 0160 -#define LOW_ONE 0016 -#define CARRY_ONE 0001 -#define HIGH_TWO 0300 -#define MID_TWO 0070 -#define LOW_TWO 0007 - - /* For 32 we start in cycle 2, with two bits and one bit carry; - * for 64 in cycle in cycle 1, with one bit and a two bit carry. - */ - cycle = (len * BITS_IN_BYTES) % BITS_IN_OCTAL; - carry = 0; - - fputs_filtered (local_octal_format_prefix (), stream); - if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) - { - for (p = valaddr; - p < valaddr + len; - p++) - { - switch (cycle) - { - case 0: - /* No carry in, carry out two bits. - */ - octa1 = (HIGH_ZERO & *p) >> 5; - octa2 = (LOW_ZERO & *p) >> 2; - carry = (CARRY_ZERO & *p); - fprintf_filtered (stream, "%o", octa1); - fprintf_filtered (stream, "%o", octa2); - break; - - case 1: - /* Carry in two bits, carry out one bit. - */ - octa1 = (carry << 1) | ((HIGH_ONE & *p) >> 7); - octa2 = (MID_ONE & *p) >> 4; - octa3 = (LOW_ONE & *p) >> 1; - carry = (CARRY_ONE & *p); - fprintf_filtered (stream, "%o", octa1); - fprintf_filtered (stream, "%o", octa2); - fprintf_filtered (stream, "%o", octa3); - break; - - case 2: - /* Carry in one bit, no carry out. - */ - octa1 = (carry << 2) | ((HIGH_TWO & *p) >> 6); - octa2 = (MID_TWO & *p) >> 3; - octa3 = (LOW_TWO & *p); - carry = 0; - fprintf_filtered (stream, "%o", octa1); - fprintf_filtered (stream, "%o", octa2); - fprintf_filtered (stream, "%o", octa3); - break; - - default: - error ("Internal error in octal conversion;"); - } - - cycle++; - cycle = cycle % BITS_IN_OCTAL; - } - } - else - { - for (p = valaddr + len - 1; - p >= valaddr; - p--) - { - switch (cycle) - { - case 0: - /* Carry out, no carry in */ - octa1 = (HIGH_ZERO & *p) >> 5; - octa2 = (LOW_ZERO & *p) >> 2; - carry = (CARRY_ZERO & *p); - fprintf_filtered (stream, "%o", octa1); - fprintf_filtered (stream, "%o", octa2); - break; - - case 1: - /* Carry in, carry out */ - octa1 = (carry << 1) | ((HIGH_ONE & *p) >> 7); - octa2 = (MID_ONE & *p) >> 4; - octa3 = (LOW_ONE & *p) >> 1; - carry = (CARRY_ONE & *p); - fprintf_filtered (stream, "%o", octa1); - fprintf_filtered (stream, "%o", octa2); - fprintf_filtered (stream, "%o", octa3); - break; - - case 2: - /* Carry in, no carry out */ - octa1 = (carry << 2) | ((HIGH_TWO & *p) >> 6); - octa2 = (MID_TWO & *p) >> 3; - octa3 = (LOW_TWO & *p); - carry = 0; - fprintf_filtered (stream, "%o", octa1); - fprintf_filtered (stream, "%o", octa2); - fprintf_filtered (stream, "%o", octa3); - break; - - default: - error ("Internal error in octal conversion;"); - } - - cycle++; - cycle = cycle % BITS_IN_OCTAL; - } - } - - fputs_filtered (local_octal_format_suffix (), stream); -} - -/* VALADDR points to an integer of LEN bytes. - * Print it in decimal on stream or format it in buf. - */ -void -print_decimal_chars (struct ui_file *stream, unsigned char *valaddr, - unsigned len) -{ -#define TEN 10 -#define TWO_TO_FOURTH 16 -#define CARRY_OUT( x ) ((x) / TEN) /* extend char to int */ -#define CARRY_LEFT( x ) ((x) % TEN) -#define SHIFT( x ) ((x) << 4) -#define START_P \ - ((TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) ? valaddr : valaddr + len - 1) -#define NOT_END_P \ - ((TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) ? (p < valaddr + len) : (p >= valaddr)) -#define NEXT_P \ - ((TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) ? p++ : p-- ) -#define LOW_NIBBLE( x ) ( (x) & 0x00F) -#define HIGH_NIBBLE( x ) (((x) & 0x0F0) >> 4) - - unsigned char *p; - unsigned char *digits; - int carry; - int decimal_len; - int i, j, decimal_digits; - int dummy; - int flip; - - /* Base-ten number is less than twice as many digits - * as the base 16 number, which is 2 digits per byte. - */ - decimal_len = len * 2 * 2; - digits = xmalloc (decimal_len); - - for (i = 0; i < decimal_len; i++) - { - digits[i] = 0; - } - - fputs_filtered (local_decimal_format_prefix (), stream); - - /* Ok, we have an unknown number of bytes of data to be printed in - * decimal. - * - * Given a hex number (in nibbles) as XYZ, we start by taking X and - * decemalizing it as "x1 x2" in two decimal nibbles. Then we multiply - * the nibbles by 16, add Y and re-decimalize. Repeat with Z. - * - * The trick is that "digits" holds a base-10 number, but sometimes - * the individual digits are > 10. - * - * Outer loop is per nibble (hex digit) of input, from MSD end to - * LSD end. - */ - decimal_digits = 0; /* Number of decimal digits so far */ - p = START_P; - flip = 0; - while (NOT_END_P) - { - /* - * Multiply current base-ten number by 16 in place. - * Each digit was between 0 and 9, now is between - * 0 and 144. - */ - for (j = 0; j < decimal_digits; j++) - { - digits[j] = SHIFT (digits[j]); - } - - /* Take the next nibble off the input and add it to what - * we've got in the LSB position. Bottom 'digit' is now - * between 0 and 159. - * - * "flip" is used to run this loop twice for each byte. - */ - if (flip == 0) - { - /* Take top nibble. - */ - digits[0] += HIGH_NIBBLE (*p); - flip = 1; - } - else - { - /* Take low nibble and bump our pointer "p". - */ - digits[0] += LOW_NIBBLE (*p); - NEXT_P; - flip = 0; - } - - /* Re-decimalize. We have to do this often enough - * that we don't overflow, but once per nibble is - * overkill. Easier this way, though. Note that the - * carry is often larger than 10 (e.g. max initial - * carry out of lowest nibble is 15, could bubble all - * the way up greater than 10). So we have to do - * the carrying beyond the last current digit. - */ - carry = 0; - for (j = 0; j < decimal_len - 1; j++) - { - digits[j] += carry; - - /* "/" won't handle an unsigned char with - * a value that if signed would be negative. - * So extend to longword int via "dummy". - */ - dummy = digits[j]; - carry = CARRY_OUT (dummy); - digits[j] = CARRY_LEFT (dummy); - - if (j >= decimal_digits && carry == 0) - { - /* - * All higher digits are 0 and we - * no longer have a carry. - * - * Note: "j" is 0-based, "decimal_digits" is - * 1-based. - */ - decimal_digits = j + 1; - break; - } - } - } - - /* Ok, now "digits" is the decimal representation, with - * the "decimal_digits" actual digits. Print! - */ - for (i = decimal_digits - 1; i >= 0; i--) - { - fprintf_filtered (stream, "%1d", digits[i]); - } - xfree (digits); - - fputs_filtered (local_decimal_format_suffix (), stream); -} - -/* VALADDR points to an integer of LEN bytes. Print it in hex on stream. */ - -void -print_hex_chars (struct ui_file *stream, unsigned char *valaddr, unsigned len) -{ - unsigned char *p; - - /* FIXME: We should be not printing leading zeroes in most cases. */ - - fputs_filtered (local_hex_format_prefix (), stream); - if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) - { - for (p = valaddr; - p < valaddr + len; - p++) - { - fprintf_filtered (stream, "%02x", *p); - } - } - else - { - for (p = valaddr + len - 1; - p >= valaddr; - p--) - { - fprintf_filtered (stream, "%02x", *p); - } - } - fputs_filtered (local_hex_format_suffix (), stream); -} - -/* VALADDR points to a char integer of LEN bytes. Print it out in appropriate language form on stream. - Omit any leading zero chars. */ - -void -print_char_chars (struct ui_file *stream, unsigned char *valaddr, unsigned len) -{ - unsigned char *p; - - if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) - { - p = valaddr; - while (p < valaddr + len - 1 && *p == 0) - ++p; - - while (p < valaddr + len) - { - LA_EMIT_CHAR (*p, stream, '\''); - ++p; - } - } - else - { - p = valaddr + len - 1; - while (p > valaddr && *p == 0) - --p; - - while (p >= valaddr) - { - LA_EMIT_CHAR (*p, stream, '\''); - --p; - } - } -} - -/* Called by various <lang>_val_print routines to print elements of an - array in the form "<elem1>, <elem2>, <elem3>, ...". - - (FIXME?) Assumes array element separator is a comma, which is correct - for all languages currently handled. - (FIXME?) Some languages have a notation for repeated array elements, - perhaps we should try to use that notation when appropriate. - */ - -void -val_print_array_elements (struct type *type, char *valaddr, CORE_ADDR address, - struct ui_file *stream, int format, int deref_ref, - int recurse, enum val_prettyprint pretty, - unsigned int i) -{ - unsigned int things_printed = 0; - unsigned len; - struct type *elttype; - unsigned eltlen; - /* Position of the array element we are examining to see - whether it is repeated. */ - unsigned int rep1; - /* Number of repetitions we have detected so far. */ - unsigned int reps; - - elttype = TYPE_TARGET_TYPE (type); - eltlen = TYPE_LENGTH (check_typedef (elttype)); - len = TYPE_LENGTH (type) / eltlen; - - annotate_array_section_begin (i, elttype); - - for (; i < len && things_printed < print_max; i++) - { - if (i != 0) - { - if (prettyprint_arrays) - { - fprintf_filtered (stream, ",\n"); - print_spaces_filtered (2 + 2 * recurse, stream); - } - else - { - fprintf_filtered (stream, ", "); - } - } - wrap_here (n_spaces (2 + 2 * recurse)); - - rep1 = i + 1; - reps = 1; - while ((rep1 < len) && - !memcmp (valaddr + i * eltlen, valaddr + rep1 * eltlen, eltlen)) - { - ++reps; - ++rep1; - } - - if (reps > repeat_count_threshold) - { - val_print (elttype, valaddr + i * eltlen, 0, 0, stream, format, - deref_ref, recurse + 1, pretty); - annotate_elt_rep (reps); - fprintf_filtered (stream, " <repeats %u times>", reps); - annotate_elt_rep_end (); - - i = rep1 - 1; - things_printed += repeat_count_threshold; - } - else - { - val_print (elttype, valaddr + i * eltlen, 0, 0, stream, format, - deref_ref, recurse + 1, pretty); - annotate_elt (); - things_printed++; - } - } - annotate_array_section_end (); - if (i < len) - { - fprintf_filtered (stream, "..."); - } -} - -/* Read LEN bytes of target memory at address MEMADDR, placing the - results in GDB's memory at MYADDR. Returns a count of the bytes - actually read, and optionally an errno value in the location - pointed to by ERRNOPTR if ERRNOPTR is non-null. */ - -/* FIXME: cagney/1999-10-14: Only used by val_print_string. Can this - function be eliminated. */ - -static int -partial_memory_read (CORE_ADDR memaddr, char *myaddr, int len, int *errnoptr) -{ - int nread; /* Number of bytes actually read. */ - int errcode; /* Error from last read. */ - - /* First try a complete read. */ - errcode = target_read_memory (memaddr, myaddr, len); - if (errcode == 0) - { - /* Got it all. */ - nread = len; - } - else - { - /* Loop, reading one byte at a time until we get as much as we can. */ - for (errcode = 0, nread = 0; len > 0 && errcode == 0; nread++, len--) - { - errcode = target_read_memory (memaddr++, myaddr++, 1); - } - /* If an error, the last read was unsuccessful, so adjust count. */ - if (errcode != 0) - { - nread--; - } - } - if (errnoptr != NULL) - { - *errnoptr = errcode; - } - return (nread); -} - -/* Print a string from the inferior, starting at ADDR and printing up to LEN - characters, of WIDTH bytes a piece, to STREAM. If LEN is -1, printing - stops at the first null byte, otherwise printing proceeds (including null - bytes) until either print_max or LEN characters have been printed, - whichever is smaller. */ - -/* FIXME: Use target_read_string. */ - -int -val_print_string (CORE_ADDR addr, int len, int width, struct ui_file *stream) -{ - int force_ellipsis = 0; /* Force ellipsis to be printed if nonzero. */ - int errcode; /* Errno returned from bad reads. */ - unsigned int fetchlimit; /* Maximum number of chars to print. */ - unsigned int nfetch; /* Chars to fetch / chars fetched. */ - unsigned int chunksize; /* Size of each fetch, in chars. */ - char *buffer = NULL; /* Dynamically growable fetch buffer. */ - char *bufptr; /* Pointer to next available byte in buffer. */ - char *limit; /* First location past end of fetch buffer. */ - struct cleanup *old_chain = NULL; /* Top of the old cleanup chain. */ - int found_nul; /* Non-zero if we found the nul char */ - - /* First we need to figure out the limit on the number of characters we are - going to attempt to fetch and print. This is actually pretty simple. If - LEN >= zero, then the limit is the minimum of LEN and print_max. If - LEN is -1, then the limit is print_max. This is true regardless of - whether print_max is zero, UINT_MAX (unlimited), or something in between, - because finding the null byte (or available memory) is what actually - limits the fetch. */ - - fetchlimit = (len == -1 ? print_max : min (len, print_max)); - - /* Now decide how large of chunks to try to read in one operation. This - is also pretty simple. If LEN >= zero, then we want fetchlimit chars, - so we might as well read them all in one operation. If LEN is -1, we - are looking for a null terminator to end the fetching, so we might as - well read in blocks that are large enough to be efficient, but not so - large as to be slow if fetchlimit happens to be large. So we choose the - minimum of 8 and fetchlimit. We used to use 200 instead of 8 but - 200 is way too big for remote debugging over a serial line. */ - - chunksize = (len == -1 ? min (8, fetchlimit) : fetchlimit); - - /* Loop until we either have all the characters to print, or we encounter - some error, such as bumping into the end of the address space. */ - - found_nul = 0; - old_chain = make_cleanup (null_cleanup, 0); - - if (len > 0) - { - buffer = (char *) xmalloc (len * width); - bufptr = buffer; - old_chain = make_cleanup (xfree, buffer); - - nfetch = partial_memory_read (addr, bufptr, len * width, &errcode) - / width; - addr += nfetch * width; - bufptr += nfetch * width; - } - else if (len == -1) - { - unsigned long bufsize = 0; - do - { - QUIT; - nfetch = min (chunksize, fetchlimit - bufsize); - - if (buffer == NULL) - buffer = (char *) xmalloc (nfetch * width); - else - { - discard_cleanups (old_chain); - buffer = (char *) xrealloc (buffer, (nfetch + bufsize) * width); - } - - old_chain = make_cleanup (xfree, buffer); - bufptr = buffer + bufsize * width; - bufsize += nfetch; - - /* Read as much as we can. */ - nfetch = partial_memory_read (addr, bufptr, nfetch * width, &errcode) - / width; - - /* Scan this chunk for the null byte that terminates the string - to print. If found, we don't need to fetch any more. Note - that bufptr is explicitly left pointing at the next character - after the null byte, or at the next character after the end of - the buffer. */ - - limit = bufptr + nfetch * width; - while (bufptr < limit) - { - unsigned long c; - - c = extract_unsigned_integer (bufptr, width); - addr += width; - bufptr += width; - if (c == 0) - { - /* We don't care about any error which happened after - the NULL terminator. */ - errcode = 0; - found_nul = 1; - break; - } - } - } - while (errcode == 0 /* no error */ - && bufptr - buffer < fetchlimit * width /* no overrun */ - && !found_nul); /* haven't found nul yet */ - } - else - { /* length of string is really 0! */ - buffer = bufptr = NULL; - errcode = 0; - } - - /* bufptr and addr now point immediately beyond the last byte which we - consider part of the string (including a '\0' which ends the string). */ - - /* We now have either successfully filled the buffer to fetchlimit, or - terminated early due to an error or finding a null char when LEN is -1. */ - - if (len == -1 && !found_nul) - { - char *peekbuf; - - /* We didn't find a null terminator we were looking for. Attempt - to peek at the next character. If not successful, or it is not - a null byte, then force ellipsis to be printed. */ - - peekbuf = (char *) alloca (width); - - if (target_read_memory (addr, peekbuf, width) == 0 - && extract_unsigned_integer (peekbuf, width) != 0) - force_ellipsis = 1; - } - else if ((len >= 0 && errcode != 0) || (len > (bufptr - buffer) / width)) - { - /* Getting an error when we have a requested length, or fetching less - than the number of characters actually requested, always make us - print ellipsis. */ - force_ellipsis = 1; - } - - QUIT; - - /* If we get an error before fetching anything, don't print a string. - But if we fetch something and then get an error, print the string - and then the error message. */ - if (errcode == 0 || bufptr > buffer) - { - if (addressprint) - { - fputs_filtered (" ", stream); - } - LA_PRINT_STRING (stream, buffer, (bufptr - buffer) / width, width, force_ellipsis); - } - - if (errcode != 0) - { - if (errcode == EIO) - { - fprintf_filtered (stream, " <Address "); - print_address_numeric (addr, 1, stream); - fprintf_filtered (stream, " out of bounds>"); - } - else - { - fprintf_filtered (stream, " <Error reading address "); - print_address_numeric (addr, 1, stream); - fprintf_filtered (stream, ": %s>", safe_strerror (errcode)); - } - } - gdb_flush (stream); - do_cleanups (old_chain); - return ((bufptr - buffer) / width); -} - - -/* Validate an input or output radix setting, and make sure the user - knows what they really did here. Radix setting is confusing, e.g. - setting the input radix to "10" never changes it! */ - -static void -set_input_radix (char *args, int from_tty, struct cmd_list_element *c) -{ - set_input_radix_1 (from_tty, input_radix); -} - -static void -set_input_radix_1 (int from_tty, unsigned radix) -{ - /* We don't currently disallow any input radix except 0 or 1, which don't - make any mathematical sense. In theory, we can deal with any input - radix greater than 1, even if we don't have unique digits for every - value from 0 to radix-1, but in practice we lose on large radix values. - We should either fix the lossage or restrict the radix range more. - (FIXME). */ - - if (radix < 2) - { - /* FIXME: cagney/2002-03-17: This needs to revert the bad radix - value. */ - error ("Nonsense input radix ``decimal %u''; input radix unchanged.", - radix); - } - input_radix = radix; - if (from_tty) - { - printf_filtered ("Input radix now set to decimal %u, hex %x, octal %o.\n", - radix, radix, radix); - } -} - -static void -set_output_radix (char *args, int from_tty, struct cmd_list_element *c) -{ - set_output_radix_1 (from_tty, output_radix); -} - -static void -set_output_radix_1 (int from_tty, unsigned radix) -{ - /* Validate the radix and disallow ones that we aren't prepared to - handle correctly, leaving the radix unchanged. */ - switch (radix) - { - case 16: - output_format = 'x'; /* hex */ - break; - case 10: - output_format = 0; /* decimal */ - break; - case 8: - output_format = 'o'; /* octal */ - break; - default: - /* FIXME: cagney/2002-03-17: This needs to revert the bad radix - value. */ - error ("Unsupported output radix ``decimal %u''; output radix unchanged.", - radix); - } - output_radix = radix; - if (from_tty) - { - printf_filtered ("Output radix now set to decimal %u, hex %x, octal %o.\n", - radix, radix, radix); - } -} - -/* Set both the input and output radix at once. Try to set the output radix - first, since it has the most restrictive range. An radix that is valid as - an output radix is also valid as an input radix. - - It may be useful to have an unusual input radix. If the user wishes to - set an input radix that is not valid as an output radix, he needs to use - the 'set input-radix' command. */ - -static void -set_radix (char *arg, int from_tty) -{ - unsigned radix; - - radix = (arg == NULL) ? 10 : parse_and_eval_long (arg); - set_output_radix_1 (0, radix); - set_input_radix_1 (0, radix); - if (from_tty) - { - printf_filtered ("Input and output radices now set to decimal %u, hex %x, octal %o.\n", - radix, radix, radix); - } -} - -/* Show both the input and output radices. */ - -static void -show_radix (char *arg, int from_tty) -{ - if (from_tty) - { - if (input_radix == output_radix) - { - printf_filtered ("Input and output radices set to decimal %u, hex %x, octal %o.\n", - input_radix, input_radix, input_radix); - } - else - { - printf_filtered ("Input radix set to decimal %u, hex %x, octal %o.\n", - input_radix, input_radix, input_radix); - printf_filtered ("Output radix set to decimal %u, hex %x, octal %o.\n", - output_radix, output_radix, output_radix); - } - } -} - - -static void -set_print (char *arg, int from_tty) -{ - printf_unfiltered ( - "\"set print\" must be followed by the name of a print subcommand.\n"); - help_list (setprintlist, "set print ", -1, gdb_stdout); -} - -static void -show_print (char *args, int from_tty) -{ - cmd_show_list (showprintlist, from_tty, ""); -} - -void -_initialize_valprint (void) -{ - struct cmd_list_element *c; - - add_prefix_cmd ("print", no_class, set_print, - "Generic command for setting how things print.", - &setprintlist, "set print ", 0, &setlist); - add_alias_cmd ("p", "print", no_class, 1, &setlist); - /* prefer set print to set prompt */ - add_alias_cmd ("pr", "print", no_class, 1, &setlist); - - add_prefix_cmd ("print", no_class, show_print, - "Generic command for showing print settings.", - &showprintlist, "show print ", 0, &showlist); - add_alias_cmd ("p", "print", no_class, 1, &showlist); - add_alias_cmd ("pr", "print", no_class, 1, &showlist); - - add_show_from_set - (add_set_cmd ("elements", no_class, var_uinteger, (char *) &print_max, - "Set limit on string chars or array elements to print.\n\ -\"set print elements 0\" causes there to be no limit.", - &setprintlist), - &showprintlist); - - add_show_from_set - (add_set_cmd ("null-stop", no_class, var_boolean, - (char *) &stop_print_at_null, - "Set printing of char arrays to stop at first null char.", - &setprintlist), - &showprintlist); - - add_show_from_set - (add_set_cmd ("repeats", no_class, var_uinteger, - (char *) &repeat_count_threshold, - "Set threshold for repeated print elements.\n\ -\"set print repeats 0\" causes all elements to be individually printed.", - &setprintlist), - &showprintlist); - - add_show_from_set - (add_set_cmd ("pretty", class_support, var_boolean, - (char *) &prettyprint_structs, - "Set prettyprinting of structures.", - &setprintlist), - &showprintlist); - - add_show_from_set - (add_set_cmd ("union", class_support, var_boolean, (char *) &unionprint, - "Set printing of unions interior to structures.", - &setprintlist), - &showprintlist); - - add_show_from_set - (add_set_cmd ("array", class_support, var_boolean, - (char *) &prettyprint_arrays, - "Set prettyprinting of arrays.", - &setprintlist), - &showprintlist); - - add_show_from_set - (add_set_cmd ("address", class_support, var_boolean, (char *) &addressprint, - "Set printing of addresses.", - &setprintlist), - &showprintlist); - - c = add_set_cmd ("input-radix", class_support, var_uinteger, - (char *) &input_radix, - "Set default input radix for entering numbers.", - &setlist); - add_show_from_set (c, &showlist); - set_cmd_sfunc (c, set_input_radix); - - c = add_set_cmd ("output-radix", class_support, var_uinteger, - (char *) &output_radix, - "Set default output radix for printing of values.", - &setlist); - add_show_from_set (c, &showlist); - set_cmd_sfunc (c, set_output_radix); - - /* The "set radix" and "show radix" commands are special in that they are - like normal set and show commands but allow two normally independent - variables to be either set or shown with a single command. So the - usual add_set_cmd() and add_show_from_set() commands aren't really - appropriate. */ - add_cmd ("radix", class_support, set_radix, - "Set default input and output number radices.\n\ -Use 'set input-radix' or 'set output-radix' to independently set each.\n\ -Without an argument, sets both radices back to the default value of 10.", - &setlist); - add_cmd ("radix", class_support, show_radix, - "Show the default input and output number radices.\n\ -Use 'show input-radix' or 'show output-radix' to independently show each.", - &showlist); - - /* Give people the defaults which they are used to. */ - prettyprint_structs = 0; - prettyprint_arrays = 0; - unionprint = 1; - addressprint = 1; - print_max = PRINT_MAX_DEFAULT; -} |