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/* Dump registers.
Copyright (C) 2004-2014 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Jakub Jelinek <jakub@redhat.com>, 2004.
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 <string.h>
#include <sys/uio.h>
#include <_itoa.h>
/* We will print the register dump in this format:
GP: XXXXXXXXXXXXXXXX R2: XXXXXXXXXXXXXXXX R3: XXXXXXXXXXXXXXXX
R8: XXXXXXXXXXXXXXXX R9: XXXXXXXXXXXXXXXX R10: XXXXXXXXXXXXXXXX
R11: XXXXXXXXXXXXXXXX SP: XXXXXXXXXXXXXXXX TP: XXXXXXXXXXXXXXXX
R14: XXXXXXXXXXXXXXXX R15: XXXXXXXXXXXXXXXX R16: XXXXXXXXXXXXXXXX
R17: XXXXXXXXXXXXXXXX R18: XXXXXXXXXXXXXXXX R19: XXXXXXXXXXXXXXXX
R20: XXXXXXXXXXXXXXXX R21: XXXXXXXXXXXXXXXX R22: XXXXXXXXXXXXXXXX
R23: XXXXXXXXXXXXXXXX R24: XXXXXXXXXXXXXXXX R25: XXXXXXXXXXXXXXXX
R26: XXXXXXXXXXXXXXXX R27: XXXXXXXXXXXXXXXX R28: XXXXXXXXXXXXXXXX
R29: XXXXXXXXXXXXXXXX R30: XXXXXXXXXXXXXXXX R31: XXXXXXXXXXXXXXXX
RP: XXXXXXXXXXXXXXXX B6: XXXXXXXXXXXXXXXX B7: XXXXXXXXXXXXXXXX
IP: XXXXXXXXXXXXXXXX RSC: XXXXXXXXXXXXXXXX PR: XXXXXXXXXXXXXXXX
PFS: XXXXXXXXXXXXXXXX UNAT: XXXXXXXXXXXXXXXX CFM: XXXXXXXXXXXXXXXX
CCV: XXXXXXXXXXXXXXXX FPSR: XXXXXXXXXXXXXXXX
F32: XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX F33: XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
F34: XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX F35: XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
...
F124: XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX F125: XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
F126: XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX F127: XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
*/
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
regvalue (unsigned long int *value, char letter, int regno, char *buf)
{
int n = regno >= 100 ? 3 : regno >= 10 ? 2 : 1;
buf[0] = ' ';
buf[1] = letter;
_itoa_word (regno, buf + 2 + n, 10, 0);
buf[2 + n] = ':';
for (++n; n <= 4; ++n)
buf[2 + n] = ' ';
hexvalue (value[0], buf + 7, 16);
if (letter == 'F')
{
hexvalue (value[1], buf + 7 + 16, 16);
buf[7 + 32] = '\n';
}
else
buf[7 + 16] = '\n';
}
static void
register_dump (int fd, struct sigcontext *ctx)
{
char gpregs[32 - 5][8 + 16];
char fpregs[128 - 32][8 + 32];
char bpregs[3][8 + 16];
char spregs[8][16];
struct iovec iov[146];
size_t nr = 0;
int i;
#define ADD_STRING(str) \
do \
{ \
iov[nr].iov_base = (char *) str; \
iov[nr].iov_len = strlen (str); \
++nr; \
} \
while (0)
#define ADD_MEM(str, len) \
do \
{ \
iov[nr].iov_base = str; \
iov[nr].iov_len = len; \
++nr; \
} \
while (0)
/* Generate strings of register contents. */
for (i = 1; i < 4; ++i)
{
regvalue (&ctx->sc_gr[i], 'R', i, gpregs[i - 1]);
if (ctx->sc_nat & (1L << i))
memcpy (gpregs[i - 1] + 7, "NaT ", 16);
}
for (i = 8; i < 32; ++i)
{
regvalue (&ctx->sc_gr[i], 'R', i, gpregs[i - 5]);
if (ctx->sc_nat & (1L << i))
memcpy (gpregs[i - 1] + 7, "NaT ", 16);
}
memcpy (gpregs[0] + 1, "GP:", 3);
memcpy (gpregs[7] + 1, "SP: ", 4);
memcpy (gpregs[8] + 1, "TP: ", 4);
regvalue (&ctx->sc_br[0], 'B', 0, bpregs[0]);
regvalue (&ctx->sc_br[6], 'B', 6, bpregs[1]);
regvalue (&ctx->sc_br[7], 'B', 7, bpregs[2]);
memcpy (bpregs[0] + 1, "RP:", 3);
if (ctx->sc_flags & IA64_SC_FLAG_FPH_VALID)
for (i = 32; i < 128; ++i)
regvalue (&ctx->sc_fr[i].u.bits[0], 'F', i, fpregs[i - 32]);
hexvalue (ctx->sc_ip, spregs[0], sizeof (spregs[0]));
hexvalue (ctx->sc_ar_rsc, spregs[1], sizeof (spregs[1]));
hexvalue (ctx->sc_pr, spregs[2], sizeof (spregs[2]));
hexvalue (ctx->sc_ar_pfs, spregs[3], sizeof (spregs[3]));
hexvalue (ctx->sc_ar_unat, spregs[4], sizeof (spregs[4]));
hexvalue (ctx->sc_cfm, spregs[5], sizeof (spregs[5]));
hexvalue (ctx->sc_ar_ccv, spregs[6], sizeof (spregs[6]));
hexvalue (ctx->sc_ar_fpsr, spregs[7], sizeof (spregs[7]));
/* Generate the output. */
ADD_STRING ("Register dump:\n\n");
for (i = 0; i < 32 - 5; ++i)
ADD_MEM (gpregs[i], sizeof (gpregs[0]) - 1 + ((i % 3) == 2));
ADD_STRING ("\n");
for (i = 0; i < 3; ++i)
ADD_MEM (bpregs[i], sizeof (bpregs[0]) - 1);
ADD_STRING ("\n\n IP: ");
ADD_MEM (spregs[0], sizeof (spregs[0]));
ADD_STRING (" RSC: ");
ADD_MEM (spregs[1], sizeof (spregs[0]));
ADD_STRING (" PR: ");
ADD_MEM (spregs[2], sizeof (spregs[0]));
ADD_STRING ("\n PFS: ");
ADD_MEM (spregs[3], sizeof (spregs[0]));
ADD_STRING (" UNAT: ");
ADD_MEM (spregs[4], sizeof (spregs[0]));
ADD_STRING (" CFM: ");
ADD_MEM (spregs[5], sizeof (spregs[0]));
ADD_STRING ("\n CCV: ");
ADD_MEM (spregs[6], sizeof (spregs[0]));
ADD_STRING (" FPSR: ");
ADD_MEM (spregs[7], sizeof (spregs[0]));
ADD_STRING ("\n");
if (ctx->sc_flags & IA64_SC_FLAG_FPH_VALID)
{
ADD_STRING ("\n");
for (i = 0; i < 128 - 32; ++i)
ADD_MEM (fpregs[i], sizeof (fpregs[0]) - 1 + (i & 1));
}
/* Write the stuff out. */
writev (fd, iov, nr);
}
#define REGISTER_DUMP register_dump (fd, ctx)
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