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/* Dump registers.
Copyright (C) 1998-2021 Free Software Foundation, Inc.
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 <stddef.h>
#include <sys/uio.h>
#include <_itoa.h>
/* We will print the register dump in this format:
D0: XXXXXXXX D1: XXXXXXXX D2: XXXXXXXX D3: XXXXXXXX
D4: XXXXXXXX D5: XXXXXXXX D6: XXXXXXXX D7: XXXXXXXX
A0: XXXXXXXX A1: XXXXXXXX A2: XXXXXXXX A3: XXXXXXXX
A4: XXXXXXXX A5: XXXXXXXX A6: XXXXXXXX A7: XXXXXXXX
PC: XXXXXXXX SR: XXXX
OldMask: XXXXXXXX Vector: XXXX
FP0: XXXXXXXXXXXXXXXXXXXXXXXX FP1: XXXXXXXXXXXXXXXXXXXXXXXX
FP2: XXXXXXXXXXXXXXXXXXXXXXXX FP3: XXXXXXXXXXXXXXXXXXXXXXXX
FP4: XXXXXXXXXXXXXXXXXXXXXXXX FP5: XXXXXXXXXXXXXXXXXXXXXXXX
FP6: XXXXXXXXXXXXXXXXXXXXXXXX FP7: XXXXXXXXXXXXXXXXXXXXXXXX
FPCR: XXXXXXXX FPSR: XXXXXXXX FPIAR: XXXXXXXX
*/
#define FPCONTEXT_SIZE 216
#define uc_formatvec __glibc_reserved1[FPCONTEXT_SIZE/4]
#define uc_oldmask uc_sigmask.__val[0]
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[20][8];
char fpregs[11][24];
struct iovec iov[63], *next_iov = iov;
int i, j, fpreg_size;
#define ADD_STRING(str) \
next_iov->iov_base = (char *) (str); \
next_iov->iov_len = strlen (str); \
++next_iov
#define ADD_MEM(str, len) \
next_iov->iov_base = (str); \
next_iov->iov_len = (len); \
++next_iov
#ifdef __mcoldfire__
fpreg_size = 16;
#else
fpreg_size = 24;
#endif
/* Generate strings of register contents. */
hexvalue (ctx->uc_mcontext.gregs[R_D0], regs[0], 8);
hexvalue (ctx->uc_mcontext.gregs[R_D1], regs[1], 8);
hexvalue (ctx->uc_mcontext.gregs[R_D2], regs[2], 8);
hexvalue (ctx->uc_mcontext.gregs[R_D3], regs[3], 8);
hexvalue (ctx->uc_mcontext.gregs[R_D4], regs[4], 8);
hexvalue (ctx->uc_mcontext.gregs[R_D5], regs[5], 8);
hexvalue (ctx->uc_mcontext.gregs[R_D6], regs[6], 8);
hexvalue (ctx->uc_mcontext.gregs[R_D7], regs[7], 8);
hexvalue (ctx->uc_mcontext.gregs[R_A0], regs[8], 8);
hexvalue (ctx->uc_mcontext.gregs[R_A1], regs[9], 8);
hexvalue (ctx->uc_mcontext.gregs[R_A2], regs[10], 8);
hexvalue (ctx->uc_mcontext.gregs[R_A3], regs[11], 8);
hexvalue (ctx->uc_mcontext.gregs[R_A4], regs[12], 8);
hexvalue (ctx->uc_mcontext.gregs[R_A5], regs[13], 8);
hexvalue (ctx->uc_mcontext.gregs[R_A6], regs[14], 8);
hexvalue (ctx->uc_mcontext.gregs[R_SP], regs[15], 8);
hexvalue (ctx->uc_mcontext.gregs[R_PC], regs[16], 8);
hexvalue (ctx->uc_mcontext.gregs[R_PS], regs[17], 4);
hexvalue (ctx->uc_oldmask, regs[18], 8);
hexvalue (ctx->uc_formatvec & 0xfff, regs[19], 4);
for (i = 0; i < 8; i++)
for (j = 0; j < fpreg_size; j += 8)
hexvalue (ctx->uc_mcontext.fpregs.f_fpregs[i][j/8], fpregs[i] + j, 8);
hexvalue (ctx->uc_mcontext.fpregs.f_pcr, fpregs[8], 8);
hexvalue (ctx->uc_mcontext.fpregs.f_psr, fpregs[9], 8);
hexvalue (ctx->uc_mcontext.fpregs.f_fpiaddr, fpregs[10], 8);
/* Generate the output. */
ADD_STRING ("Register dump:\n\n D0: ");
ADD_MEM (regs[0], 8);
ADD_STRING (" D1: ");
ADD_MEM (regs[1], 8);
ADD_STRING (" D2: ");
ADD_MEM (regs[2], 8);
ADD_STRING (" D3: ");
ADD_MEM (regs[3], 8);
ADD_STRING ("\n D4: ");
ADD_MEM (regs[4], 8);
ADD_STRING (" D5: ");
ADD_MEM (regs[5], 8);
ADD_STRING (" D6: ");
ADD_MEM (regs[6], 8);
ADD_STRING (" D7: ");
ADD_MEM (regs[7], 8);
ADD_STRING ("\n A0: ");
ADD_MEM (regs[8], 8);
ADD_STRING (" A1: ");
ADD_MEM (regs[9], 8);
ADD_STRING (" A2: ");
ADD_MEM (regs[10], 8);
ADD_STRING (" A3: ");
ADD_MEM (regs[11], 8);
ADD_STRING ("\n A4: ");
ADD_MEM (regs[12], 8);
ADD_STRING (" A5: ");
ADD_MEM (regs[13], 8);
ADD_STRING (" A6: ");
ADD_MEM (regs[14], 8);
ADD_STRING (" A7: ");
ADD_MEM (regs[15], 8);
ADD_STRING ("\n PC: ");
ADD_MEM (regs[16], 8);
ADD_STRING (" SR: ");
ADD_MEM (regs[17], 4);
ADD_STRING ("\n\n OldMask: ");
ADD_MEM (regs[18], 8);
ADD_STRING (" Vector: ");
ADD_MEM (regs[19], 4);
ADD_STRING ("\n\n FP0: ");
ADD_MEM (fpregs[0], fpreg_size);
ADD_STRING (" FP1: ");
ADD_MEM (fpregs[1], fpreg_size);
ADD_STRING ("\n FP2: ");
ADD_MEM (fpregs[2], fpreg_size);
ADD_STRING (" FP3: ");
ADD_MEM (fpregs[3], fpreg_size);
ADD_STRING ("\n FP4: ");
ADD_MEM (fpregs[4], fpreg_size);
ADD_STRING (" FP5: ");
ADD_MEM (fpregs[5], fpreg_size);
ADD_STRING ("\n FP6: ");
ADD_MEM (fpregs[6], fpreg_size);
ADD_STRING (" FP7: ");
ADD_MEM (fpregs[7], fpreg_size);
ADD_STRING ("\n FPCR: ");
ADD_MEM (fpregs[8], 8);
ADD_STRING (" FPSR: ");
ADD_MEM (fpregs[9], 8);
ADD_STRING (" FPIAR: ");
ADD_MEM (fpregs[10], 8);
ADD_STRING ("\n");
/* Write the stuff out. */
writev (fd, iov, next_iov - iov);
}
#define REGISTER_DUMP register_dump (fd, ctx)
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