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/* Copyright (C) 2011-2016 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
Based on work contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library. If not, see
<http://www.gnu.org/licenses/>. */
#include <sys/uio.h>
#include <_itoa.h>
/* We will print the register dump in this format:
R0: XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX
R8: XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX
R16: XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX
R24: XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX
R32: XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX
R40: XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX
R48: XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX
R52: XXXXXXXX TP: XXXXXXXX SP: XXXXXXXX LR: XXXXXXXX
PC: XXXXXXXX ICS: X FAULTNUM: XX
*/
static void
hexvalue (unsigned long int value, char *buf, size_t len)
{
char *cp = _itoa_word (value, buf + len, 16, 0);
while (cp > buf)
*--cp = '0';
}
static void
register_dump (int fd, mcontext_t *ctx)
{
char regs[59][8];
struct iovec iov[143];
size_t nr = 0;
unsigned int i;
#define ADD_STRING(str) \
iov[nr].iov_base = (char *) str; \
iov[nr].iov_len = strlen (str); \
++nr
#define ADD_MEM(str, len) \
iov[nr].iov_base = str; \
iov[nr].iov_len = len; \
++nr
/* Generate strings of register contents. */
for (i = 0; i < 56; ++i)
hexvalue (ctx->gregs[i], regs[i], 8);
hexvalue (ctx->pc, regs[56], 8);
hexvalue (ctx->ics, regs[57], 1);
hexvalue (ctx->faultnum, regs[58], 2);
/* Generate the output. */
for (i = 0; i < 52;)
{
const char *prefixes[] = {
"Register dump:\n\n R0: ",
"\n R8: ",
"\n R16: ",
"\n R24: ",
"\n R32: ",
"\n R40: ",
"\n R48: "
};
ADD_STRING (prefixes[i / 8]);
do
{
ADD_MEM (regs[i], 8);
ADD_STRING (" ");
}
while (++i % 8 && i < 52);
}
ADD_STRING ("\n R52: ");
ADD_MEM (regs[52], 8);
ADD_STRING (" TP: ");
ADD_MEM (regs[53], 8);
ADD_STRING (" SP: ");
ADD_MEM (regs[54], 8);
ADD_STRING (" LR: ");
ADD_MEM (regs[55], 8);
ADD_STRING ("\n\n PC: ");
ADD_MEM (regs[56], 8);
ADD_STRING (" ICS: ");
ADD_MEM (regs[57], 1);
ADD_STRING (" FAULTNUM: ");
ADD_MEM (regs[58], 2);
ADD_STRING ("\n");
/* Write the stuff out. */
writev (fd, iov, nr);
}
#define REGISTER_DUMP register_dump (fd, &ctx->uc_mcontext)
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