/* Print values for GDB, the GNU debugger.
- Copyright 1986, 1988, 1989, 1991 Free Software Foundation, Inc.
+ Copyright 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
+ 1997, 1998, 1999, 2000, 2001
+ Free Software Foundation, Inc.
-This file is part of GDB.
+ 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 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.
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+ 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 <string.h>
+#include "gdb_string.h"
#include "symtab.h"
#include "gdbtypes.h"
#include "value.h"
#include "target.h"
#include "obstack.h"
#include "language.h"
-#include "demangle.h"
+#include "annotate.h"
+#include "valprint.h"
+#include "floatformat.h"
+#include "doublest.h"
#include <errno.h>
/* Prototypes for local functions */
-static void
-print_hex_chars PARAMS ((FILE *, unsigned char *, unsigned int));
+static int partial_memory_read (CORE_ADDR memaddr, char *myaddr,
+ int len, int *errnoptr);
-static void
-show_print PARAMS ((char *, int));
+static void print_hex_chars (struct ui_file *, unsigned char *,
+ unsigned int);
-static void
-set_print PARAMS ((char *, int));
+static void show_print (char *, int);
-static void
-set_radix PARAMS ((char *, int, struct cmd_list_element *));
+static void set_print (char *, int);
-static void
-set_output_radix PARAMS ((char *, int, struct cmd_list_element *));
+static void set_radix (char *, int);
-static void
-value_print_array_elements PARAMS ((value, FILE *, int, enum val_prettyprint));
+static void show_radix (char *, int);
-/* Maximum number of chars to print for a string pointer value
- or vector contents, or UINT_MAX for no limit. */
+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 int repeat_count_threshold = 10;
-int prettyprint_structs; /* Controls pretty printing of structures */
-int prettyprint_arrays; /* Controls pretty printing of arrays. */
+/* 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. */
/* If nonzero, causes machine addresses to be printed in certain contexts. */
int addressprint; /* Controls printing of machine addresses */
-
\f
+
/* 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).
int
-val_print (type, valaddr, address, stream, format, deref_ref, recurse, pretty)
- struct type *type;
- char *valaddr;
- CORE_ADDR address;
- FILE *stream;
- int format;
- int deref_ref;
- int recurse;
- enum val_prettyprint pretty;
+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. Typical types that my be stubs
- are structs, unions, and C++ methods. */
+ print appropriate string and return. */
- check_stub_type (type);
- if (TYPE_FLAGS (type) & TYPE_FLAG_STUB)
+ if (TYPE_STUB (real_type))
{
fprintf_filtered (stream, "<incomplete type>");
- fflush (stream);
+ gdb_flush (stream);
return (0);
}
-
- return (LA_VAL_PRINT (type, valaddr, address, stream, format, deref_ref,
- recurse, pretty));
+
+ return (LA_VAL_PRINT (type, valaddr, embedded_offset, address,
+ stream, format, deref_ref, recurse, pretty));
}
/* Print the value VAL in C-ish syntax on stream STREAM.
the number of string bytes printed. */
int
-value_print (val, stream, format, pretty)
- value val;
- FILE *stream;
- int format;
- enum val_prettyprint pretty;
+value_print (struct value *val, struct ui_file *stream, int format,
+ enum val_prettyprint pretty)
{
- register unsigned int n, typelen;
-
if (val == 0)
{
printf_filtered ("<address of value unknown>");
printf_filtered ("<value optimized out>");
return 0;
}
+ return LA_VALUE_PRINT (val, stream, format, pretty);
+}
- /* A "repeated" value really contains several values in a row.
- They are made by the @ operator.
- Print such values as if they were arrays. */
+/* 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. */
- if (VALUE_REPEATED (val))
+void
+val_print_type_code_int (struct type *type, char *valaddr,
+ struct ui_file *stream)
+{
+ if (TYPE_LENGTH (type) > sizeof (LONGEST))
{
- n = VALUE_REPETITIONS (val);
- typelen = TYPE_LENGTH (VALUE_TYPE (val));
- fprintf_filtered (stream, "{");
- /* Print arrays of characters using string syntax. */
- if (typelen == 1 && TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_INT
- && format == 0)
- LA_PRINT_STRING (stream, VALUE_CONTENTS (val), n, 0);
+ LONGEST val;
+
+ if (TYPE_UNSIGNED (type)
+ && extract_long_unsigned_integer (valaddr, TYPE_LENGTH (type),
+ &val))
+ {
+ print_longest (stream, 'u', 0, val);
+ }
else
{
- value_print_array_elements (val, stream, format, pretty);
+ /* 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));
}
- fprintf_filtered (stream, "}");
- return (n * typelen);
}
else
{
- struct type *type = VALUE_TYPE (val);
+#ifdef PRINT_TYPELESS_INTEGER
+ PRINT_TYPELESS_INTEGER (stream, type, unpack_long (type, valaddr));
+#else
+ print_longest (stream, TYPE_UNSIGNED (type) ? 'u' : 'd', 0,
+ unpack_long (type, valaddr));
+#endif
+ }
+}
+
+/* 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 it is a pointer, indicate what it points to.
+#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",
+ val_long);
+ break;
+ case 'u':
+ fprintf_filtered (stream, "%llu", val_long);
+ break;
+ case 'x':
+ fprintf_filtered (stream,
+ use_local ? local_hex_format_custom ("ll")
+ : "%llx",
+ val_long);
+ break;
+ case 'o':
+ fprintf_filtered (stream,
+ use_local ? local_octal_format_custom ("ll")
+ : "%llo",
+ 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. */
- Print type also if it is a reference.
+ 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 */
+}
- C++: if it is a member pointer, we will take care
- of that when we print it. */
- if (TYPE_CODE (type) == TYPE_CODE_PTR ||
- TYPE_CODE (type) == TYPE_CODE_REF)
+#if 0
+void
+strcat_longest (int format, int use_local, LONGEST val_long, char *buf,
+ int buflen)
+{
+/* FIXME: Use buflen to avoid buffer overflow. */
+#if defined (CC_HAS_LONG_LONG) && !defined (PRINTF_HAS_LONG_LONG)
+ long vtop, vbot;
+
+ vtop = val_long >> (sizeof (long) * HOST_CHAR_BIT);
+ vbot = (long) val_long;
+
+ if ((format == 'd' && (val_long < INT_MIN || val_long > INT_MAX))
+ || ((format == 'u' || format == 'x') && (unsigned long long) val_long > UINT_MAX))
+ {
+ sprintf (buf, "0x%lx%08lx", vtop, vbot);
+ return;
+ }
+#endif
+
+#ifdef PRINTF_HAS_LONG_LONG
+ switch (format)
+ {
+ case 'd':
+ sprintf (buf,
+ (use_local ? local_decimal_format_custom ("ll") : "%lld"),
+ val_long);
+ break;
+ case 'u':
+ sprintf (buf, "%llu", val_long);
+ break;
+ case 'x':
+ sprintf (buf,
+ (use_local ? local_hex_format_custom ("ll") : "%llx"),
+
+ val_long);
+ break;
+ case 'o':
+ sprintf (buf,
+ (use_local ? local_octal_format_custom ("ll") : "%llo"),
+ val_long);
+ break;
+ case 'b':
+ sprintf (buf, local_hex_format_custom ("02ll"), val_long);
+ break;
+ case 'h':
+ sprintf (buf, local_hex_format_custom ("04ll"), val_long);
+ break;
+ case 'w':
+ sprintf (buf, local_hex_format_custom ("08ll"), val_long);
+ break;
+ case 'g':
+ sprintf (buf, local_hex_format_custom ("016ll"), val_long);
+ break;
+ default:
+ internal_error (__FILE__, __LINE__, "failed internal consistency check");
+ }
+#else /* !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':
+ sprintf (buf, (use_local ? local_decimal_format_custom ("l") : "%ld"),
+ ((long) val_long));
+ break;
+ case 'u':
+ sprintf (buf, "%lu", ((unsigned long) val_long));
+ break;
+ case 'x':
+ sprintf (buf, (use_local ? local_hex_format_custom ("l") : "%lx"),
+ ((long) val_long));
+ break;
+ case 'o':
+ sprintf (buf, (use_local ? local_octal_format_custom ("l") : "%lo"),
+ ((long) val_long));
+ break;
+ case 'b':
+ sprintf (buf, local_hex_format_custom ("02l"),
+ ((long) val_long));
+ break;
+ case 'h':
+ sprintf (buf, local_hex_format_custom ("04l"),
+ ((long) val_long));
+ break;
+ case 'w':
+ sprintf (buf, local_hex_format_custom ("08l"),
+ ((long) val_long));
+ break;
+ case 'g':
+ sprintf (buf, local_hex_format_custom ("016l"),
+ ((long) val_long));
+ break;
+ default:
+ internal_error (__FILE__, __LINE__, "failed internal consistency check");
+ }
+
+#endif /* !PRINTF_HAS_LONG_LONG */
+}
+#endif
+
+/* 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)
{
- /* Hack: remove (char *) for char strings. Their
- type is indicated by the quoted string anyway. */
- if (TYPE_CODE (type) == TYPE_CODE_PTR &&
- TYPE_LENGTH (TYPE_TARGET_TYPE (type)) == sizeof(char) &&
- TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_INT &&
- !TYPE_UNSIGNED (TYPE_TARGET_TYPE (type)))
- {
- /* Print nothing */
- }
- else
- {
- fprintf_filtered (stream, "(");
- type_print (type, "", stream, -1);
- fprintf_filtered (stream, ") ");
- }
+ error ("Value out of range.");
}
- return (val_print (type, VALUE_CONTENTS (val),
- VALUE_ADDRESS (val), stream, format, 1, 0, pretty));
}
+ return (rtnval);
}
-/* Called by various <lang>_val_print routines to print TYPE_CODE_INT's */
+/* Print a floating point value of type TYPE (not always a
+ TYPE_CODE_FLT), pointed to in GDB by VALADDR, on STREAM. */
void
-val_print_type_code_int (type, valaddr, stream)
- struct type *type;
- char *valaddr;
- FILE *stream;
+print_floating (char *valaddr, struct type *type, struct ui_file *stream)
{
- char *p;
- /* Pointer to first (i.e. lowest address) nonzero character. */
- char *first_addr;
- unsigned int len;
+ DOUBLEST doub;
+ int inv;
+ const struct floatformat *fmt = NULL;
+ unsigned len = TYPE_LENGTH (type);
- if (TYPE_LENGTH (type) > sizeof (LONGEST))
+ /* 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 (TYPE_UNSIGNED (type))
+ if (floatformat_is_negative (fmt, valaddr))
+ fprintf_filtered (stream, "-");
+ fprintf_filtered (stream, "nan(");
+ fprintf_filtered (stream, local_hex_format_prefix ());
+ fprintf_filtered (stream, floatformat_mantissa (fmt, valaddr));
+ fprintf_filtered (stream, local_hex_format_suffix ());
+ 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. */
+
+ fprintf_filtered (stream, local_binary_format_prefix ());
+ if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
+ {
+ for (p = valaddr;
+ p < valaddr + len;
+ p++)
{
- /* First figure out whether the number in fact has zeros
- in all its bytes more significant than least significant
- sizeof (LONGEST) ones. */
- len = TYPE_LENGTH (type);
-
-#if TARGET_BYTE_ORDER == BIG_ENDIAN
- for (p = valaddr;
- len > sizeof (LONGEST) && p < valaddr + TYPE_LENGTH (type);
- p++)
-#else /* Little endian. */
- first_addr = valaddr;
- for (p = valaddr + TYPE_LENGTH (type);
- len > sizeof (LONGEST) && p >= valaddr;
- p--)
-#endif /* Little endian. */
+ /* 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 == 0)
- {
- len--;
- }
+ if (*p & (mask >> i))
+ b = 1;
else
- {
- break;
- }
- }
-#if TARGET_BYTE_ORDER == BIG_ENDIAN
- first_addr = p;
-#endif
- if (len <= sizeof (LONGEST))
- {
- /* We can print it in decimal. */
- fprintf_filtered
- (stream,
-#if defined (LONG_LONG)
- "%llu",
-#else
- "%lu",
-#endif
- unpack_long (BUILTIN_TYPE_LONGEST, first_addr));
+ b = 0;
+
+ fprintf_filtered (stream, "%1d", b);
}
- else
+ }
+ }
+ else
+ {
+ for (p = valaddr + len - 1;
+ p >= valaddr;
+ p--)
+ {
+ for (i = 0; i < (BITS_IN_BYTES * sizeof (*p)); i++)
{
- /* It is big, so print it in hex. */
- print_hex_chars (stream, (unsigned char *) first_addr, len);
+ if (*p & (mask >> i))
+ b = 1;
+ else
+ b = 0;
+
+ fprintf_filtered (stream, "%1d", b);
}
}
- else
+ }
+ fprintf_filtered (stream, local_binary_format_suffix ());
+}
+
+/* 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;
+
+ fprintf_filtered (stream, local_octal_format_prefix ());
+ if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
+ {
+ for (p = valaddr;
+ p < valaddr + len;
+ p++)
{
- /* Signed. 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));
+ 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
{
-#ifdef PRINT_TYPELESS_INTEGER
- PRINT_TYPELESS_INTEGER (stream, type, unpack_long (type, valaddr));
-#else
- fprintf_filtered (stream, TYPE_UNSIGNED (type) ?
-#if defined (LONG_LONG)
- "%llu" : "%lld",
-#else
- "%u" : "%d",
-#endif
- unpack_long (type, valaddr));
-#endif
+ 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;
+ }
}
-}
-/* Print a floating point value of type TYPE, pointed to in GDB by VALADDR,
- on STREAM. */
+ fprintf_filtered (stream, local_octal_format_suffix ());
+}
+/* VALADDR points to an integer of LEN bytes.
+ * Print it in decimal on stream or format it in buf.
+ */
void
-print_floating (valaddr, type, stream)
- char *valaddr;
- struct type *type;
- FILE *stream;
+print_decimal_chars (struct ui_file *stream, unsigned char *valaddr,
+ unsigned len)
{
- double doub;
- int inv;
- unsigned len = TYPE_LENGTH (type);
-
-#if defined (IEEE_FLOAT)
-
- /* Check for NaN's. Note that this code does not depend on us being
- on an IEEE conforming system. It only depends on the target
- machine using IEEE representation. This means (a)
- cross-debugging works right, and (2) IEEE_FLOAT can (and should)
- be defined for systems like the 68881, which uses IEEE
- representation, but is not IEEE conforming. */
-
- {
- long low, high;
- /* Is the sign bit 0? */
- int nonnegative;
- /* Is it is a NaN (i.e. the exponent is all ones and
- the fraction is nonzero)? */
- int is_nan;
-
- if (len == sizeof (float))
- {
- /* It's single precision. */
- memcpy ((char *) &low, valaddr, sizeof (low));
- /* target -> host. */
- SWAP_TARGET_AND_HOST (&low, sizeof (float));
- nonnegative = low >= 0;
- is_nan = ((((low >> 23) & 0xFF) == 0xFF)
- && 0 != (low & 0x7FFFFF));
- low &= 0x7fffff;
- high = 0;
- }
- else
- {
- /* It's double precision. Get the high and low words. */
-
-#if TARGET_BYTE_ORDER == BIG_ENDIAN
- memcpy (&low, valaddr+4, sizeof (low));
- memcpy (&high, valaddr+0, sizeof (high));
-#else
- memcpy (&low, valaddr+0, sizeof (low));
- memcpy (&high, valaddr+4, sizeof (high));
-#endif
- SWAP_TARGET_AND_HOST (&low, sizeof (low));
- SWAP_TARGET_AND_HOST (&high, sizeof (high));
- nonnegative = high >= 0;
- is_nan = (((high >> 20) & 0x7ff) == 0x7ff
- && ! ((((high & 0xfffff) == 0)) && (low == 0)));
- high &= 0xfffff;
- }
-
- if (is_nan)
- {
- /* The meaning of the sign and fraction is not defined by IEEE.
- But the user might know what they mean. For example, they
- (in an implementation-defined manner) distinguish between
- signaling and quiet NaN's. */
- if (high)
- fprintf_filtered (stream, "-NaN(0x%lx%.8lx)" + nonnegative,
- high, low);
- else
- fprintf_filtered (stream, "-NaN(0x%lx)" + nonnegative, low);
- return;
- }
- }
-#endif /* IEEE_FLOAT. */
+#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)
- doub = unpack_double (type, valaddr, &inv);
- if (inv)
- fprintf_filtered (stream, "<invalid float value>");
- else
- fprintf_filtered (stream, len <= sizeof(float) ? "%.9g" : "%.17g", doub);
+ 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;
+ }
+
+ fprintf_filtered (stream, local_decimal_format_prefix ());
+
+ /* 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);
+
+ fprintf_filtered (stream, local_decimal_format_suffix ());
}
/* VALADDR points to an integer of LEN bytes. Print it in hex on stream. */
static void
-print_hex_chars (stream, valaddr, len)
- FILE *stream;
- unsigned char *valaddr;
- unsigned len;
+print_hex_chars (struct ui_file *stream, unsigned char *valaddr, unsigned len)
{
unsigned char *p;
-
- fprintf_filtered (stream, "0x");
-#if TARGET_BYTE_ORDER == BIG_ENDIAN
- for (p = valaddr;
- p < valaddr + len;
- p++)
-#else /* Little endian. */
- for (p = valaddr + len - 1;
- p >= valaddr;
- p--)
-#endif
+
+ /* FIXME: We should be not printing leading zeroes in most cases. */
+
+ fprintf_filtered (stream, local_hex_format_prefix ());
+ if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
{
- fprintf_filtered (stream, "%02x", *p);
+ 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);
+ }
+ }
+ fprintf_filtered (stream, local_hex_format_suffix ());
}
/* Called by various <lang>_val_print routines to print elements of an
- array in the form "<elem1>, <elem2>, <elem3>, ...".
+ 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.
- */
+ (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 (type, valaddr, address, stream, format, deref_ref,
- recurse, pretty, i)
- struct type *type;
- char *valaddr;
- CORE_ADDR address;
- FILE *stream;
- int format;
- int deref_ref;
- int recurse;
- enum val_prettyprint pretty;
- unsigned int i;
+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;
unsigned int rep1;
/* Number of repetitions we have detected so far. */
unsigned int reps;
-
+
elttype = TYPE_TARGET_TYPE (type);
- eltlen = TYPE_LENGTH (elttype);
+ 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)
}
}
wrap_here (n_spaces (2 + 2 * recurse));
-
+
rep1 = i + 1;
reps = 1;
- while ((rep1 < len) &&
+ 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, stream, format,
+ 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, stream, format,
+ 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, "...");
}
}
-static void
-value_print_array_elements (val, stream, format, pretty)
- value val;
- FILE *stream;
- int format;
- enum val_prettyprint pretty;
+/* 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)
{
- unsigned int things_printed = 0;
- register unsigned int i, n, typelen;
- /* Position of the array elem we are examining to see if it is repeated. */
- unsigned int rep1;
- /* Number of repetitions we have detected so far. */
- unsigned int reps;
-
- n = VALUE_REPETITIONS (val);
- typelen = TYPE_LENGTH (VALUE_TYPE (val));
- for (i = 0; i < n && things_printed < print_max; i++)
+ 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)
{
- if (i != 0)
- {
- fprintf_filtered (stream, ", ");
- }
- wrap_here ("");
-
- rep1 = i + 1;
- reps = 1;
- while (rep1 < n && !memcmp (VALUE_CONTENTS (val) + typelen * i,
- VALUE_CONTENTS (val) + typelen * rep1,
- typelen))
- {
- ++reps;
- ++rep1;
- }
-
- if (reps > repeat_count_threshold)
+ /* 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--)
{
- val_print (VALUE_TYPE (val), VALUE_CONTENTS (val) + typelen * i,
- VALUE_ADDRESS (val) + typelen * i, stream, format, 1,
- 0, pretty);
- fprintf (stream, " <repeats %u times>", reps);
- i = rep1 - 1;
- things_printed += repeat_count_threshold;
+ errcode = target_read_memory (memaddr++, myaddr++, 1);
}
- else
+ /* If an error, the last read was unsuccessful, so adjust count. */
+ if (errcode != 0)
{
- val_print (VALUE_TYPE (val), VALUE_CONTENTS (val) + typelen * i,
- VALUE_ADDRESS (val) + typelen * i, stream, format, 1,
- 0, pretty);
- things_printed++;
+ nread--;
}
}
- if (i < n)
+ if (errnoptr != NULL)
{
- fprintf_filtered (stream, "...");
+ *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 (addr, stream)
- CORE_ADDR addr;
- FILE *stream;
+val_print_string (CORE_ADDR addr, int len, int width, struct ui_file *stream)
{
- int first_addr_err;
- int errcode;
- unsigned char c;
- char *string;
- int force_ellipses;
- unsigned int i = 0; /* Number of characters printed. */
-
- /* Get first character. */
- errcode = target_read_memory (addr, (char *)&c, 1);
- if (errcode != 0)
+ 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)
{
- /* First address out of bounds. */
- first_addr_err = 1;
+ 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
+ else if (len == -1)
{
- first_addr_err = 0;
- /* A real string. */
- string = (char *) alloca (print_max);
-
- /* If the loop ends by us hitting print_max characters,
- we need to have elipses at the end. */
- force_ellipses = 1;
-
- /* This loop always fetches print_max characters, even
- though LA_PRINT_STRING might want to print more or fewer
- (with repeated characters). This is so that
- we don't spend forever fetching if we print
- a long string consisting of the same character
- repeated. Also so we can do it all in one memory
- operation, which is faster. However, this will be
- slower if print_max is set high, e.g. if you set
- print_max to 1000, not only will it take a long
- time to fetch short strings, but if you are near
- the end of the address space, it might not work. */
- QUIT;
- errcode = target_read_memory (addr, string, print_max);
- if (errcode != 0)
+ unsigned long bufsize = 0;
+ do
{
- /* Try reading just one character. If that succeeds,
- assume we hit the end of the address space, but
- the initial part of the string is probably safe. */
- char x[1];
- errcode = target_read_memory (addr, x, 1);
- }
- if (errcode != 0)
- force_ellipses = 0;
- else
- for (i = 0; i < print_max; i++)
- if (string[i] == '\0')
+ QUIT;
+ nfetch = min (chunksize, fetchlimit - bufsize);
+
+ if (buffer == NULL)
+ buffer = (char *) xmalloc (nfetch * width);
+ else
{
- force_ellipses = 0;
- break;
+ discard_cleanups (old_chain);
+ buffer = (char *) xrealloc (buffer, (nfetch + bufsize) * width);
}
- QUIT;
-
+
+ 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, string, i, force_ellipses);
+ LA_PRINT_STRING (stream, buffer, (bufptr - buffer) / width, width, force_ellipsis);
}
-
+
if (errcode != 0)
{
if (errcode == EIO)
{
- fprintf_filtered (stream,
- (" <Address 0x%x out of bounds>" + first_addr_err),
- addr + i);
+ fprintf_filtered (stream, " <Address ");
+ print_address_numeric (addr, 1, stream);
+ fprintf_filtered (stream, " out of bounds>");
}
else
{
- error ("Error reading memory address 0x%x: %s.", addr + i,
- safe_strerror (errcode));
+ fprintf_filtered (stream, " <Error reading address ");
+ print_address_numeric (addr, 1, stream);
+ fprintf_filtered (stream, ": %s>", safe_strerror (errcode));
}
}
- fflush (stream);
- return (i);
+ gdb_flush (stream);
+ do_cleanups (old_chain);
+ return ((bufptr - buffer) / width);
}
\f
-#if 0
+
/* 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! */
/* ARGSUSED */
static void
-set_input_radix (args, from_tty, c)
- char *args;
- int from_tty;
- struct cmd_list_element *c;
+set_input_radix (char *args, int from_tty, struct cmd_list_element *c)
{
- unsigned radix = *(unsigned *)c->var;
+ set_input_radix_1 (from_tty, *(unsigned *) c->var);
+}
+/* ARGSUSED */
+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)
+ {
+ error ("Nonsense input radix ``decimal %u''; input radix unchanged.",
+ radix);
+ }
+ input_radix = radix;
if (from_tty)
- printf_filtered ("Input radix set to decimal %d, hex %x, octal %o\n",
- radix, radix, radix);
+ {
+ printf_filtered ("Input radix now set to decimal %u, hex %x, octal %o.\n",
+ radix, radix, radix);
+ }
}
-#endif
/* ARGSUSED */
static void
-set_output_radix (args, from_tty, c)
- char *args;
- int from_tty;
- struct cmd_list_element *c;
+set_output_radix (char *args, int from_tty, struct cmd_list_element *c)
{
- unsigned radix = *(unsigned *)c->var;
-
- if (from_tty)
- printf_filtered ("Output radix set to decimal %d, hex %x, octal %o\n",
- radix, radix, radix);
+ set_output_radix_1 (from_tty, *(unsigned *) c->var);
+}
- /* FIXME, we really should be able to validate the setting BEFORE
- it takes effect. */
+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';
+ output_format = 'x'; /* hex */
break;
case 10:
- output_format = 0;
+ output_format = 0; /* decimal */
break;
case 8:
- output_format = 'o'; /* octal */
+ output_format = 'o'; /* octal */
break;
default:
- output_format = 0;
- error ("Unsupported radix ``decimal %d''; using decimal output",
- radix);
+ 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);
}
}
-/* Both at once */
+/* 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 (arg, from_tty, c)
- char *arg;
- int from_tty;
- struct cmd_list_element *c;
+set_radix (char *arg, int from_tty)
{
- unsigned radix = *(unsigned *)c->var;
+ 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 ("Radix set to decimal %d, hex %x, octal %o\n",
- radix, radix, radix);
+ {
+ printf_filtered ("Input and output radices now set to decimal %u, hex %x, octal %o.\n",
+ radix, radix, radix);
+ }
+}
- input_radix = radix;
- output_radix = radix;
+/* Show both the input and output radices. */
- set_output_radix (arg, 0, c);
+/*ARGSUSED */
+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);
+ }
+ }
}
\f
-/*ARGSUSED*/
+
+/*ARGSUSED */
static void
-set_print (arg, from_tty)
- char *arg;
- int from_tty;
+set_print (char *arg, int from_tty)
{
- printf (
-"\"set print\" must be followed by the name of a print subcommand.\n");
- help_list (setprintlist, "set print ", -1, stdout);
+ printf_unfiltered (
+ "\"set print\" must be followed by the name of a print subcommand.\n");
+ help_list (setprintlist, "set print ", -1, gdb_stdout);
}
-/*ARGSUSED*/
+/*ARGSUSED */
static void
-show_print (args, from_tty)
- char *args;
- int from_tty;
+show_print (char *args, int from_tty)
{
cmd_show_list (showprintlist, from_tty, "");
}
\f
void
-_initialize_valprint ()
+_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);
- add_alias_cmd ("pr", "print", no_class, 1, &setlist); /* prefer set print
- to set prompt */
+ 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_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,
+ (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,
+ (char *) &repeat_count_threshold,
"Set threshold for repeated print elements.\n\
\"set print repeats 0\" causes all elements to be individually printed.",
&setprintlist),
add_show_from_set
(add_set_cmd ("pretty", class_support, var_boolean,
- (char *)&prettyprint_structs,
+ (char *) &prettyprint_structs,
"Set prettyprinting of structures.",
&setprintlist),
&showprintlist);
add_show_from_set
- (add_set_cmd ("union", class_support, var_boolean, (char *)&unionprint,
+ (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,
+ (char *) &prettyprint_arrays,
"Set prettyprinting of arrays.",
&setprintlist),
&showprintlist);
add_show_from_set
- (add_set_cmd ("address", class_support, var_boolean, (char *)&addressprint,
+ (add_set_cmd ("address", class_support, var_boolean, (char *) &addressprint,
"Set printing of addresses.",
&setprintlist),
&showprintlist);
-#if 0
- /* The "show radix" cmd isn't good enough to show two separate values.
- The rest of the code works, but the show part is confusing, so don't
- let them be set separately 'til we work out "show". */
c = add_set_cmd ("input-radix", class_support, var_uinteger,
- (char *)&input_radix,
- "Set default input radix for entering numbers.",
- &setlist);
+ (char *) &input_radix,
+ "Set default input radix for entering numbers.",
+ &setlist);
add_show_from_set (c, &showlist);
- c->function = set_input_radix;
+ 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);
- c->function = set_output_radix;
-#endif
-
- c = add_set_cmd ("radix", class_support, var_uinteger,
- (char *)&output_radix,
- "Set default input and output number radix.",
- &setlist);
+ (char *) &output_radix,
+ "Set default output radix for printing of values.",
+ &setlist);
add_show_from_set (c, &showlist);
- c->function.sfunc = set_radix;
+ 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 = 200;
+ print_max = PRINT_MAX_DEFAULT;
}
projects / deliverable / binutils-gdb.git / blobdiff