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/* Cell-based print utility routines for GDB, the GNU debugger.
Copyright (C) 1986-2023 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 3 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, see <http://www.gnu.org/licenses/>. */
#include "common-defs.h"
#include "print-utils.h"
/* Temporary storage using circular buffer. */
/* Number of cells in the circular buffer. */
#define NUMCELLS 16
/* Return the next entry in the circular buffer. */
char *
get_print_cell (void)
{
static char buf[NUMCELLS][PRINT_CELL_SIZE];
static int cell = 0;
if (++cell >= NUMCELLS)
cell = 0;
return buf[cell];
}
static char *
decimal2str (const char *sign, ULONGEST addr, int width)
{
/* Steal code from valprint.c:print_decimal(). Should this worry
about the real size of addr as the above does? */
unsigned long temp[3];
char *str = get_print_cell ();
int i = 0;
do
{
temp[i] = addr % (1000 * 1000 * 1000);
addr /= (1000 * 1000 * 1000);
i++;
width -= 9;
}
while (addr != 0 && i < (sizeof (temp) / sizeof (temp[0])));
width += 9;
if (width < 0)
width = 0;
switch (i)
{
case 1:
xsnprintf (str, PRINT_CELL_SIZE, "%s%0*lu", sign, width, temp[0]);
break;
case 2:
xsnprintf (str, PRINT_CELL_SIZE, "%s%0*lu%09lu", sign, width,
temp[1], temp[0]);
break;
case 3:
xsnprintf (str, PRINT_CELL_SIZE, "%s%0*lu%09lu%09lu", sign, width,
temp[2], temp[1], temp[0]);
break;
default:
internal_error (_("failed internal consistency check"));
}
return str;
}
static char *
octal2str (ULONGEST addr, int width)
{
unsigned long temp[3];
char *str = get_print_cell ();
int i = 0;
do
{
temp[i] = addr % (0100000 * 0100000);
addr /= (0100000 * 0100000);
i++;
width -= 10;
}
while (addr != 0 && i < (sizeof (temp) / sizeof (temp[0])));
width += 10;
if (width < 0)
width = 0;
switch (i)
{
case 1:
if (temp[0] == 0)
xsnprintf (str, PRINT_CELL_SIZE, "%*o", width, 0);
else
xsnprintf (str, PRINT_CELL_SIZE, "0%0*lo", width, temp[0]);
break;
case 2:
xsnprintf (str, PRINT_CELL_SIZE, "0%0*lo%010lo", width, temp[1], temp[0]);
break;
case 3:
xsnprintf (str, PRINT_CELL_SIZE, "0%0*lo%010lo%010lo", width,
temp[2], temp[1], temp[0]);
break;
default:
internal_error (_("failed internal consistency check"));
}
return str;
}
/* See print-utils.h. */
char *
pulongest (ULONGEST u)
{
return decimal2str ("", u, 0);
}
/* See print-utils.h. */
char *
plongest (LONGEST l)
{
if (l < 0)
return decimal2str ("-", -l, 0);
else
return decimal2str ("", l, 0);
}
/* Eliminate warning from compiler on 32-bit systems. */
static int thirty_two = 32;
/* See print-utils.h. */
char *
phex (ULONGEST l, int sizeof_l)
{
char *str;
switch (sizeof_l)
{
case 8:
str = get_print_cell ();
xsnprintf (str, PRINT_CELL_SIZE, "%08lx%08lx",
(unsigned long) (l >> thirty_two),
(unsigned long) (l & 0xffffffff));
break;
case 4:
str = get_print_cell ();
xsnprintf (str, PRINT_CELL_SIZE, "%08lx", (unsigned long) l);
break;
case 2:
str = get_print_cell ();
xsnprintf (str, PRINT_CELL_SIZE, "%04x", (unsigned short) (l & 0xffff));
break;
case 1:
str = get_print_cell ();
xsnprintf (str, PRINT_CELL_SIZE, "%02x", (unsigned short) (l & 0xff));
break;
default:
str = phex (l, sizeof (l));
break;
}
return str;
}
/* See print-utils.h. */
char *
phex_nz (ULONGEST l, int sizeof_l)
{
char *str;
switch (sizeof_l)
{
case 8:
{
unsigned long high = (unsigned long) (l >> thirty_two);
str = get_print_cell ();
if (high == 0)
xsnprintf (str, PRINT_CELL_SIZE, "%lx",
(unsigned long) (l & 0xffffffff));
else
xsnprintf (str, PRINT_CELL_SIZE, "%lx%08lx", high,
(unsigned long) (l & 0xffffffff));
break;
}
case 4:
str = get_print_cell ();
xsnprintf (str, PRINT_CELL_SIZE, "%lx", (unsigned long) l);
break;
case 2:
str = get_print_cell ();
xsnprintf (str, PRINT_CELL_SIZE, "%x", (unsigned short) (l & 0xffff));
break;
case 1:
str = get_print_cell ();
xsnprintf (str, PRINT_CELL_SIZE, "%x", (unsigned short) (l & 0xff));
break;
default:
str = phex_nz (l, sizeof (l));
break;
}
return str;
}
/* See print-utils.h. */
char *
hex_string (LONGEST num)
{
char *result = get_print_cell ();
xsnprintf (result, PRINT_CELL_SIZE, "0x%s", phex_nz (num, sizeof (num)));
return result;
}
/* See print-utils.h. */
char *
hex_string_custom (LONGEST num, int width)
{
char *result = get_print_cell ();
char *result_end = result + PRINT_CELL_SIZE - 1;
const char *hex = phex_nz (num, sizeof (num));
int hex_len = strlen (hex);
if (hex_len > width)
width = hex_len;
if (width + 2 >= PRINT_CELL_SIZE)
internal_error (_("\
hex_string_custom: insufficient space to store result"));
strcpy (result_end - width - 2, "0x");
memset (result_end - width, '0', width);
strcpy (result_end - hex_len, hex);
return result_end - width - 2;
}
/* See print-utils.h. */
char *
int_string (LONGEST val, int radix, int is_signed, int width,
int use_c_format)
{
switch (radix)
{
case 16:
{
char *result;
if (width == 0)
result = hex_string (val);
else
result = hex_string_custom (val, width);
if (! use_c_format)
result += 2;
return result;
}
case 10:
{
if (is_signed && val < 0)
/* Cast to unsigned before negating, to prevent runtime error:
negation of -9223372036854775808 cannot be represented in type
'long int'; cast to an unsigned type to negate this value to
itself. */
return decimal2str ("-", -(ULONGEST)val, width);
else
return decimal2str ("", val, width);
}
case 8:
{
char *result = octal2str (val, width);
if (use_c_format || val == 0)
return result;
else
return result + 1;
}
default:
internal_error (_("failed internal consistency check"));
}
}
/* See print-utils.h. */
const char *
core_addr_to_string (const CORE_ADDR addr)
{
char *str = get_print_cell ();
strcpy (str, "0x");
strcat (str, phex (addr, sizeof (addr)));
return str;
}
/* See print-utils.h. */
const char *
core_addr_to_string_nz (const CORE_ADDR addr)
{
char *str = get_print_cell ();
strcpy (str, "0x");
strcat (str, phex_nz (addr, sizeof (addr)));
return str;
}
/* See print-utils.h. */
const char *
host_address_to_string_1 (const void *addr)
{
char *str = get_print_cell ();
xsnprintf (str, PRINT_CELL_SIZE, "0x%s",
phex_nz ((uintptr_t) addr, sizeof (addr)));
return str;
}
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