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/* Dump registers. 64 bit S/390 version.
Copyright (C) 2001-2020 Free Software Foundation, Inc.
Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
This file is part of the GNU C Library.
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 <sys/uio.h>
#include <_itoa.h>
/* We will print the register dump in this format:
GPR0: XXXXXXXXXXXXXXXX GPR1: XXXXXXXXXXXXXXXX
GPR2: XXXXXXXXXXXXXXXX GPR3: XXXXXXXXXXXXXXXX
GPR4: XXXXXXXXXXXXXXXX GPR5: XXXXXXXXXXXXXXXX
GPR6: XXXXXXXXXXXXXXXX GPR7: XXXXXXXXXXXXXXXX
GPR8: XXXXXXXXXXXXXXXX GPR9: XXXXXXXXXXXXXXXX
GPRA: XXXXXXXXXXXXXXXX GPRB: XXXXXXXXXXXXXXXX
GPRC: XXXXXXXXXXXXXXXX GPRD: XXXXXXXXXXXXXXXX
GPRE: XXXXXXXXXXXXXXXX GPRF: XXXXXXXXXXXXXXXX
PSW.MASK: XXXXXXXXXXXXXXXX PSW.ADDR: XXXXXXXXXXXXXXXX
ST(0) XXXX XXXXXXXXXXXXXXXX ST(1) XXXX XXXXXXXXXXXXXXXX
ST(2) XXXX XXXXXXXXXXXXXXXX ST(3) XXXX XXXXXXXXXXXXXXXX
ST(4) XXXX XXXXXXXXXXXXXXXX ST(5) XXXX XXXXXXXXXXXXXXXX
ST(6) XXXX XXXXXXXXXXXXXXXX ST(7) XXXX XXXXXXXXXXXXXXXX
*/
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, struct ucontext_t *ctx)
{
char regs[19][16];
struct iovec iov[40];
size_t nr = 0;
#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. */
hexvalue (ctx->uc_mcontext.gregs[0], regs[0], 16);
hexvalue (ctx->uc_mcontext.gregs[1], regs[1], 16);
hexvalue (ctx->uc_mcontext.gregs[2], regs[2], 16);
hexvalue (ctx->uc_mcontext.gregs[3], regs[3], 16);
hexvalue (ctx->uc_mcontext.gregs[4], regs[4], 16);
hexvalue (ctx->uc_mcontext.gregs[5], regs[5], 16);
hexvalue (ctx->uc_mcontext.gregs[6], regs[6], 16);
hexvalue (ctx->uc_mcontext.gregs[7], regs[7], 16);
hexvalue (ctx->uc_mcontext.gregs[8], regs[8], 16);
hexvalue (ctx->uc_mcontext.gregs[9], regs[9], 16);
hexvalue (ctx->uc_mcontext.gregs[10], regs[10], 16);
hexvalue (ctx->uc_mcontext.gregs[11], regs[11], 16);
hexvalue (ctx->uc_mcontext.gregs[12], regs[12], 16);
hexvalue (ctx->uc_mcontext.gregs[13], regs[13], 16);
hexvalue (ctx->uc_mcontext.gregs[14], regs[14], 16);
hexvalue (ctx->uc_mcontext.gregs[15], regs[15], 16);
hexvalue (ctx->uc_mcontext.psw.mask, regs[16], 16);
hexvalue (ctx->uc_mcontext.psw.addr, regs[17], 16);
/* Generate the output. */
ADD_STRING ("Register dump:\n\n GPR0: ");
ADD_MEM (regs[0], 16);
ADD_STRING (" GPR1: ");
ADD_MEM (regs[1], 16);
ADD_STRING (" GPR2: ");
ADD_MEM (regs[2], 16);
ADD_STRING (" GPR3: ");
ADD_MEM (regs[3], 16);
ADD_STRING ("\n GPR4: ");
ADD_MEM (regs[4], 16);
ADD_STRING (" GPR5: ");
ADD_MEM (regs[5], 16);
ADD_STRING (" GPR6: ");
ADD_MEM (regs[6], 16);
ADD_STRING (" GPR7: ");
ADD_MEM (regs[7], 16);
ADD_STRING ("\n GPR8: ");
ADD_MEM (regs[8], 16);
ADD_STRING (" GPR9: ");
ADD_MEM (regs[9], 16);
ADD_STRING (" GPRA: ");
ADD_MEM (regs[10], 16);
ADD_STRING (" GPRB: ");
ADD_MEM (regs[11], 16);
ADD_STRING ("\n GPRC: ");
ADD_MEM (regs[12], 16);
ADD_STRING (" GPRD: ");
ADD_MEM (regs[13], 16);
ADD_STRING (" GPRE: ");
ADD_MEM (regs[14], 16);
ADD_STRING (" GPRF: ");
ADD_MEM (regs[15], 16);
ADD_STRING ("\n\n PSW.MASK: ");
ADD_MEM (regs[16], 16);
ADD_STRING (" PSW.ADDR: ");
ADD_MEM (regs[17], 16);
ADD_STRING (" TRAP: ");
ADD_MEM (regs[18], 4);
ADD_STRING ("\n");
/* Write the stuff out. */
writev (fd, iov, nr);
}
#define REGISTER_DUMP register_dump (fd, ctx)
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