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/* Dump registers.
Copyright (C) 1998-2017 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Philip Blundell <pb@nexus.co.uk>, 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>
#include <sys/ucontext.h>
/* We will print the register dump in this format:
R0: XXXXXXXX R1: XXXXXXXX R2: XXXXXXXX R3: XXXXXXXX
R4: XXXXXXXX R5: XXXXXXXX R6: XXXXXXXX R7: XXXXXXXX
R8: XXXXXXXX R9: XXXXXXXX SL: XXXXXXXX FP: XXXXXXXX
IP: XXXXXXXX SP: XXXXXXXX LR: XXXXXXXX PC: XXXXXXXX
CPSR: XXXXXXXX
Trap: XXXXXXXX Error: XXXXXXXX OldMask: XXXXXXXX
Addr: XXXXXXXX
*/
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, const struct ucontext *ctx)
{
char regs[21][8];
struct iovec iov[97];
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.arm_r0, regs[0], 8);
hexvalue (ctx->uc_mcontext.arm_r1, regs[1], 8);
hexvalue (ctx->uc_mcontext.arm_r2, regs[2], 8);
hexvalue (ctx->uc_mcontext.arm_r3, regs[3], 8);
hexvalue (ctx->uc_mcontext.arm_r4, regs[4], 8);
hexvalue (ctx->uc_mcontext.arm_r5, regs[5], 8);
hexvalue (ctx->uc_mcontext.arm_r6, regs[6], 8);
hexvalue (ctx->uc_mcontext.arm_r7, regs[7], 8);
hexvalue (ctx->uc_mcontext.arm_r8, regs[8], 8);
hexvalue (ctx->uc_mcontext.arm_r9, regs[9], 8);
hexvalue (ctx->uc_mcontext.arm_r10, regs[10], 8);
hexvalue (ctx->uc_mcontext.arm_fp, regs[11], 8);
hexvalue (ctx->uc_mcontext.arm_ip, regs[12], 8);
hexvalue (ctx->uc_mcontext.arm_sp, regs[13], 8);
hexvalue (ctx->uc_mcontext.arm_lr, regs[14], 8);
hexvalue (ctx->uc_mcontext.arm_pc, regs[15], 8);
hexvalue (ctx->uc_mcontext.arm_cpsr, regs[16], 8);
hexvalue (ctx->uc_mcontext.trap_no, regs[17], 8);
hexvalue (ctx->uc_mcontext.error_code, regs[18], 8);
hexvalue (ctx->uc_mcontext.oldmask, regs[19], 8);
hexvalue (ctx->uc_mcontext.fault_address, regs[20], 8);
/* Generate the output. */
ADD_STRING ("Register dump:\n\n R0: ");
ADD_MEM (regs[0], 8);
ADD_STRING (" R1: ");
ADD_MEM (regs[1], 8);
ADD_STRING (" R2: ");
ADD_MEM (regs[2], 8);
ADD_STRING (" R3: ");
ADD_MEM (regs[3], 8);
ADD_STRING ("\n R4: ");
ADD_MEM (regs[4], 8);
ADD_STRING (" R5: ");
ADD_MEM (regs[5], 8);
ADD_STRING (" R6: ");
ADD_MEM (regs[6], 8);
ADD_STRING (" R7: ");
ADD_MEM (regs[7], 8);
ADD_STRING ("\n R8: ");
ADD_MEM (regs[8], 8);
ADD_STRING (" R9: ");
ADD_MEM (regs[9], 8);
ADD_STRING (" SL: ");
ADD_MEM (regs[10], 8);
ADD_STRING (" FP: ");
ADD_MEM (regs[11], 8);
ADD_STRING ("\n IP: ");
ADD_MEM (regs[12], 8);
ADD_STRING (" SP: ");
ADD_MEM (regs[13], 8);
ADD_STRING (" LR: ");
ADD_MEM (regs[14], 8);
ADD_STRING (" PC: ");
ADD_MEM (regs[15], 8);
ADD_STRING ("\n\n CPSR: ");
ADD_MEM (regs[16], 8);
ADD_STRING ("\n\n Trap: ");
ADD_MEM (regs[17], 8);
ADD_STRING (" Error: ");
ADD_MEM (regs[18], 8);
ADD_STRING (" OldMask: ");
ADD_MEM (regs[19], 8);
ADD_STRING ("\n Addr: ");
ADD_MEM (regs[20], 8);
ADD_STRING ("\n");
/* Write the stuff out. */
writev (fd, iov, nr);
}
#define REGISTER_DUMP register_dump (fd, ctx)
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