/* Print values for GDB, the GNU debugger.
- Copyright 1986, 1988, 1989, 1991 Free Software Foundation, Inc.
+ Copyright 1986, 1988, 1989, 1991, 1992, 1993, 1994
+ Free Software Foundation, Inc.
This file is part of GDB.
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. */
+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 "obstack.h"
#include "language.h"
#include "demangle.h"
+#include "annotate.h"
+#include "valprint.h"
#include <errno.h>
static void
set_output_radix_1 PARAMS ((int, unsigned));
-static void
-value_print_array_elements PARAMS ((value, GDB_FILE *, int, enum val_prettyprint));
-
/* 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
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. */
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;
/* 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_FLAGS (real_type) & TYPE_FLAG_STUB)
{
fprintf_filtered (stream, "<incomplete type>");
gdb_flush (stream);
int
value_print (val, stream, format, pretty)
- value val;
+ value_ptr val;
GDB_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;
}
-
- /* A "repeated" value really contains several values in a row.
- They are made by the @ operator.
- Print such values as if they were arrays. */
-
- if (VALUE_REPEATED (val))
- {
- 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);
- else
- {
- value_print_array_elements (val, stream, format, pretty);
- }
- fprintf_filtered (stream, "}");
- return (n * typelen);
- }
- else
- {
- struct type *type = VALUE_TYPE (val);
-
- /* If it is a pointer, indicate what it points to.
-
- Print type also if it is a reference.
-
- 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)
- {
- /* 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, ") ");
- }
- }
- return (val_print (type, VALUE_CONTENTS (val),
- VALUE_ADDRESS (val), stream, format, 1, 0, pretty));
- }
+ return LA_VALUE_PRINT (val, stream, format, pretty);
}
-/* Called by various <lang>_val_print routines to print TYPE_CODE_INT's */
+/* 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 (type, valaddr, stream)
char *valaddr;
GDB_FILE *stream;
{
- char *p;
- /* Pointer to first (i.e. lowest address) nonzero character. */
- char *first_addr;
- unsigned int len;
-
if (TYPE_LENGTH (type) > sizeof (LONGEST))
{
- if (TYPE_UNSIGNED (type))
+ LONGEST val;
+
+ if (TYPE_UNSIGNED (type)
+ && extract_long_unsigned_integer (valaddr, TYPE_LENGTH (type),
+ &val))
{
- /* 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) - 1;
- len > sizeof (LONGEST) && p >= valaddr;
- p--)
-#endif /* Little endian. */
- {
- if (*p == 0)
- {
- len--;
- }
- else
- {
- break;
- }
- }
-#if TARGET_BYTE_ORDER == BIG_ENDIAN
- first_addr = p;
-#endif
- if (len <= sizeof (LONGEST))
- {
- /* The most significant bytes are zero, so we can just get
- the least significant sizeof (LONGEST) bytes and print it
- in decimal. */
- print_longest (stream, 'u', 0,
- extract_unsigned_integer (first_addr,
- sizeof (LONGEST)));
- }
- else
- {
- /* It is big, so print it in hex. */
- print_hex_chars (stream, (unsigned char *) first_addr, len);
- }
+ print_longest (stream, 'u', 0, val);
}
else
{
- /* Signed. One could assume two's complement (a reasonable
- assumption, I think) and do better than this. */
+ /* 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));
}
printf() that supports "ll" in the format string. We handle these by seeing
if the number is actually a long, 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(). USE_LOCAL says whether or not to call the
- local formatting routine to get the format. */
+ 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). */
void
print_longest (stream, format, use_local, val_long)
{
#if defined (CC_HAS_LONG_LONG) && !defined (PRINTF_HAS_LONG_LONG)
long vtop, vbot;
-
- vtop = val_long >> (sizeof (long) * HOST_CHAR_BIT);
+ unsigned int ui_max = UINT_MAX;
+ unsigned long long val_ulonglong;
+
+ /* 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 */
+ vtop = val_long >> (sizeof (long) * HOST_CHAR_BIT - 1);
+ vtop >>= 1;
vbot = (long) val_long;
-
- if ((format == 'd' && (val_long < INT_MIN || val_long > INT_MAX))
- || ((format == 'u' || format == 'x') && val_long > UINT_MAX))
+ val_ulonglong = (unsigned long long) val_long;
+ switch (format)
{
- fprintf_filtered (stream, "0x%lx%08lx", vtop, vbot);
- return;
+ case 'd':
+ if (val_long < INT_MIN || val_long > INT_MAX)
+ {
+ if (sizeof (long long) > sizeof (long))
+ {
+ fprintf_filtered (stream, "0x%lx%08lx", vtop, vbot);
+ }
+ else
+ {
+ fprintf_filtered (stream, "%d", vbot);
+ }
+ return;
+ }
+ break;
+ case 'x':
+ if (val_ulonglong > ui_max)
+ {
+ if (sizeof (long long) > sizeof (long))
+ {
+ fprintf_filtered (stream, "0x%lx%08lx", vtop, vbot);
+ }
+ else
+ {
+ fprintf_filtered (stream, "0x%lx", vbot);
+ }
+ return;
+ }
+ break;
+ case 'u':
+ if (val_ulonglong > ui_max)
+ {
+ if (sizeof (long long) > sizeof (long))
+ {
+ fprintf_filtered (stream, "0x%lx%08lx", vtop, vbot);
+ }
+ else
+ {
+ fprintf_filtered (stream, "%lu", (unsigned long) vbot);
+ }
+ return;
+ }
+ break;
}
#endif
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);
if (sizeof (LONGEST) <= sizeof (int))
return arg;
- if (arg > INT_MAX || arg < INT_MIN)
- error ("Value out of range.");
+ if (arg > INT_MAX)
+ error ("Value is larger than largest signed integer.");
+ if (arg < INT_MIN)
+ error ("Value is smaller than smallest signed integer.");
return arg;
}
struct type *type;
GDB_FILE *stream;
{
- double doub;
+ DOUBLEST doub;
int inv;
unsigned len = TYPE_LENGTH (type);
/* Assume that floating point byte order is the same as
integer byte order. */
-#if TARGET_BYTE_ORDER == BIG_ENDIAN
- low = extract_unsigned_integer (valaddr + 4, 4);
- high = extract_unsigned_integer (valaddr, 4);
-#else
- low = extract_unsigned_integer (valaddr, 4);
- high = extract_unsigned_integer (valaddr + 4, 4);
-#endif
+ if (TARGET_BYTE_ORDER == BIG_ENDIAN)
+ {
+ low = extract_unsigned_integer (valaddr + 4, 4);
+ high = extract_unsigned_integer (valaddr, 4);
+ }
+ else
+ {
+ low = extract_unsigned_integer (valaddr, 4);
+ high = extract_unsigned_integer (valaddr + 4, 4);
+ }
nonnegative = ((high & 0x80000000) == 0);
is_nan = (((high >> 20) & 0x7ff) == 0x7ff
&& ! ((((high & 0xfffff) == 0)) && (low == 0)));
doub = unpack_double (type, valaddr, &inv);
if (inv)
- fprintf_filtered (stream, "<invalid float value>");
+ {
+ fprintf_filtered (stream, "<invalid float value>");
+ return;
+ }
+
+ if (len < sizeof (double))
+ fprintf_filtered (stream, "%.9g", (double) doub);
+ else if (len == sizeof (double))
+ fprintf_filtered (stream, "%.17g", (double) doub);
else
- fprintf_filtered (stream, len <= sizeof(float) ? "%.9g" : "%.17g", doub);
+#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
}
/* VALADDR points to an integer of LEN bytes. Print it in hex on stream. */
/* FIXME: We should be not printing leading zeroes in most cases. */
fprintf_filtered (stream, local_hex_format_prefix ());
-#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
+ if (TARGET_BYTE_ORDER == BIG_ENDIAN)
{
- 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 ());
}
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) &&
++reps;
++rep1;
}
-
+
if (reps > repeat_count_threshold)
{
val_print (elttype, valaddr + i * eltlen, 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;
}
{
val_print (elttype, valaddr + i * eltlen, 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;
- GDB_FILE *stream;
- int format;
- enum val_prettyprint pretty;
-{
- 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++)
- {
- 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)
- {
- val_print (VALUE_TYPE (val), VALUE_CONTENTS (val) + typelen * i,
- VALUE_ADDRESS (val) + typelen * i, stream, format, 1,
- 0, pretty);
- fprintf_unfiltered (stream, " <repeats %u times>", reps);
- i = rep1 - 1;
- things_printed += repeat_count_threshold;
- }
- else
- {
- val_print (VALUE_TYPE (val), VALUE_CONTENTS (val) + typelen * i,
- VALUE_ADDRESS (val) + typelen * i, stream, format, 1,
- 0, pretty);
- things_printed++;
- }
- }
- if (i < n)
- {
- fprintf_filtered (stream, "...");
- }
-}
-
/* Print a string from the inferior, starting at ADDR and printing up to LEN
characters, to STREAM. If LEN is zero, 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: All callers supply LEN of zero. Supplying a non-zero LEN is
+ pointless, this routine just then becomes a convoluted version of
+ target_read_memory_partial. Removing all the LEN stuff would simplify
+ this routine enormously.
+
+ FIXME: Use target_read_string. */
+
int
val_print_string (addr, len, stream)
CORE_ADDR addr;
unsigned int fetchlimit; /* Maximum number of bytes to fetch. */
unsigned int nfetch; /* Bytes to fetch / bytes fetched. */
unsigned int chunksize; /* Size of each fetch, in bytes. */
- int bufsize; /* Size of current fetch buffer. */
+ unsigned int bufsize; /* Size of current fetch buffer. */
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. */
after the null byte, or at the next character after the end of
the buffer. */
limit = bufptr + nfetch;
- do {
- addr++;
- bufptr++;
- } while (bufptr < limit && *(bufptr - 1) != '\0');
+ while (bufptr < limit)
+ {
+ ++addr;
+ ++bufptr;
+ if (bufptr[-1] == '\0')
+ {
+ /* We don't care about any error which happened after
+ the NULL terminator. */
+ errcode = 0;
+ break;
+ }
+ }
}
} while (errcode == 0 /* no error */
&& bufsize < fetchlimit /* no overrun */
&& !(len == 0 && *(bufptr - 1) == '\0')); /* no null term */
+ /* 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 byte when LEN is
- zero. */
+ zero. */
- if (len == 0 && *(bufptr - 1) != '\0')
+ if (len == 0 && bufptr > buffer && *(bufptr - 1) != '\0')
{
/* 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. */
+ a null byte, then force ellipsis to be printed. */
if (target_read_memory (addr, &peekchar, 1) != 0 || peekchar != '\0')
{
force_ellipsis = 1;
}
QUIT;
-
- if (addressprint)
+
+ /* 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)
{
- fputs_filtered (" ", stream);
+ if (addressprint)
+ {
+ fputs_filtered (" ", stream);
+ }
+ LA_PRINT_STRING (stream, buffer, bufptr - buffer, force_ellipsis);
}
- LA_PRINT_STRING (stream, buffer, bufptr - buffer, force_ellipsis);
-
- if (errcode != 0 && force_ellipsis)
+
+ if (errcode != 0)
{
if (errcode == EIO)
{
fprintf_filtered (stream, " <Address ");
- print_address_numeric (addr, stream);
+ print_address_numeric (addr, 1, stream);
fprintf_filtered (stream, " out of bounds>");
}
else
{
- /* FIXME-32x64: assumes addr fits in a long. */
- error ("Error reading memory address 0x%lx: %s.",
- (unsigned long) addr,
- safe_strerror (errcode));
+ fprintf_filtered (stream, " <Error reading address ");
+ print_address_numeric (addr, 1, stream);
+ fprintf_filtered (stream, ": %s>", safe_strerror (errcode));
}
}
gdb_flush (stream);
&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,
projects / deliverable / binutils-gdb.git / blobdiff