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/* Dump registers.
Copyright (C) 2000-2021 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Andreas Jaeger <aj@suse.de>, 2000.
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
<https://www.gnu.org/licenses/>. */
#include <sgidefs.h>
#include <sys/uio.h>
#include <_itoa.h>
#if _MIPS_SIM == _ABIO32
# define CTX_TYPE struct sigcontext *
# define CTX_REG(ctx, i) ((ctx)->sc_regs[(i)])
# define CTX_PC(ctx) ((ctx)->sc_pc)
# define CTX_MDHI(ctx) ((ctx)->sc_mdhi)
# define CTX_MDLO(ctx) ((ctx)->sc_mdlo)
# define REG_HEX_SIZE 8
#else
# define CTX_TYPE ucontext_t *
# define CTX_REG(ctx, i) ((ctx)->uc_mcontext.gregs[(i)])
# define CTX_PC(ctx) ((ctx)->uc_mcontext.pc)
# define CTX_MDHI(ctx) ((ctx)->uc_mcontext.mdhi)
# define CTX_MDLO(ctx) ((ctx)->uc_mcontext.mdhi)
# define REG_HEX_SIZE 16
#endif
/* 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
pc lo hi
XXXXXXXX XXXXXXXX XXXXXXXX
The FPU registers will not be printed.
*/
static void
hexvalue (_ITOA_WORD_TYPE 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, CTX_TYPE ctx)
{
char regs[38][REG_HEX_SIZE];
struct iovec iov[38 * 2 + 10];
size_t nr = 0;
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 < 32; i++)
hexvalue (CTX_REG (ctx, i), regs[i], REG_HEX_SIZE);
hexvalue (CTX_PC (ctx), regs[32], REG_HEX_SIZE);
hexvalue (CTX_MDHI (ctx), regs[33], REG_HEX_SIZE);
hexvalue (CTX_MDLO (ctx), regs[34], REG_HEX_SIZE);
/* Generate the output. */
ADD_STRING ("Register dump:\n\n R0 ");
for (i = 0; i < 8; i++)
{
ADD_MEM (regs[i], REG_HEX_SIZE);
ADD_STRING (" ");
}
ADD_STRING ("\n R8 ");
for (i = 8; i < 16; i++)
{
ADD_MEM (regs[i], REG_HEX_SIZE);
ADD_STRING (" ");
}
ADD_STRING ("\n R16 ");
for (i = 16; i < 24; i++)
{
ADD_MEM (regs[i], REG_HEX_SIZE);
ADD_STRING (" ");
}
ADD_STRING ("\n R24 ");
for (i = 24; i < 32; i++)
{
ADD_MEM (regs[i], REG_HEX_SIZE);
ADD_STRING (" ");
}
ADD_STRING ("\n pc lo hi\n ");
for (i = 32; i < 35; i++)
{
ADD_MEM (regs[i], REG_HEX_SIZE);
ADD_STRING (" ");
}
ADD_STRING ("\n");
/* Write the stuff out. */
writev (fd, iov, nr);
}
#define REGISTER_DUMP register_dump (fd, ctx)
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