sysdeps/unix/sysv/linux/arm/register-dump.h

   1 /* Dump registers.
   2    Copyright (C) 1998-2015 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Philip Blundell <pb@nexus.co.uk>, 1998.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library.  If not, see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 #include <sys/uio.h>
  21 #include <_itoa.h>
  22 #include <sys/ucontext.h>
  23
  24 /* We will print the register dump in this format:
  25
  26  R0: XXXXXXXX   R1: XXXXXXXX   R2: XXXXXXXX   R3: XXXXXXXX
  27  R4: XXXXXXXX   R5: XXXXXXXX   R6: XXXXXXXX   R7: XXXXXXXX
  28  R8: XXXXXXXX   R9: XXXXXXXX   SL: XXXXXXXX   FP: XXXXXXXX
  29  IP: XXXXXXXX   SP: XXXXXXXX   LR: XXXXXXXX   PC: XXXXXXXX
  30
  31  CPSR: XXXXXXXX
  32
  33  Trap: XXXXXXXX   Error: XXXXXXXX   OldMask: XXXXXXXX
  34  Addr: XXXXXXXX
  35
  36  */
  37
  38 static void
  39 hexvalue (unsigned long int value, char *buf, size_t len)
  40 {
  41   char *cp = _itoa_word (value, buf + len, 16, 0);
  42   while (cp > buf)
  43     *--cp = '0';
  44 }
  45
  46 static void
  47 register_dump (int fd, const struct ucontext *ctx)
  48 {
  49   char regs[21][8];
  50   struct iovec iov[97];
  51   size_t nr = 0;
  52
  53 #define ADD_STRING(str) \
  54   iov[nr].iov_base = (char *) str;                                            \
  55   iov[nr].iov_len = strlen (str);                                             \
  56   ++nr
  57 #define ADD_MEM(str, len) \
  58   iov[nr].iov_base = str;                                                     \
  59   iov[nr].iov_len = len;                                                      \
  60   ++nr
  61
  62   /* Generate strings of register contents.  */
  63   hexvalue (ctx->uc_mcontext.arm_r0, regs[0], 8);
  64   hexvalue (ctx->uc_mcontext.arm_r1, regs[1], 8);
  65   hexvalue (ctx->uc_mcontext.arm_r2, regs[2], 8);
  66   hexvalue (ctx->uc_mcontext.arm_r3, regs[3], 8);
  67   hexvalue (ctx->uc_mcontext.arm_r4, regs[4], 8);
  68   hexvalue (ctx->uc_mcontext.arm_r5, regs[5], 8);
  69   hexvalue (ctx->uc_mcontext.arm_r6, regs[6], 8);
  70   hexvalue (ctx->uc_mcontext.arm_r7, regs[7], 8);
  71   hexvalue (ctx->uc_mcontext.arm_r8, regs[8], 8);
  72   hexvalue (ctx->uc_mcontext.arm_r9, regs[9], 8);
  73   hexvalue (ctx->uc_mcontext.arm_r10, regs[10], 8);
  74   hexvalue (ctx->uc_mcontext.arm_fp, regs[11], 8);
  75   hexvalue (ctx->uc_mcontext.arm_ip, regs[12], 8);
  76   hexvalue (ctx->uc_mcontext.arm_sp, regs[13], 8);
  77   hexvalue (ctx->uc_mcontext.arm_lr, regs[14], 8);
  78   hexvalue (ctx->uc_mcontext.arm_pc, regs[15], 8);
  79   hexvalue (ctx->uc_mcontext.arm_cpsr, regs[16], 8);
  80   hexvalue (ctx->uc_mcontext.trap_no, regs[17], 8);
  81   hexvalue (ctx->uc_mcontext.error_code, regs[18], 8);
  82   hexvalue (ctx->uc_mcontext.oldmask, regs[19], 8);
  83   hexvalue (ctx->uc_mcontext.fault_address, regs[20], 8);
  84
  85   /* Generate the output.  */
  86   ADD_STRING ("Register dump:\n\n R0: ");
  87   ADD_MEM (regs[0], 8);
  88   ADD_STRING ("   R1: ");
  89   ADD_MEM (regs[1], 8);
  90   ADD_STRING ("   R2: ");
  91   ADD_MEM (regs[2], 8);
  92   ADD_STRING ("   R3: ");
  93   ADD_MEM (regs[3], 8);
  94   ADD_STRING ("\n R4: ");
  95   ADD_MEM (regs[4], 8);
  96   ADD_STRING ("   R5: ");
  97   ADD_MEM (regs[5], 8);
  98   ADD_STRING ("   R6: ");
  99   ADD_MEM (regs[6], 8);
 100   ADD_STRING ("   R7: ");
 101   ADD_MEM (regs[7], 8);
 102   ADD_STRING ("\n R8: ");
 103   ADD_MEM (regs[8], 8);
 104   ADD_STRING ("   R9: ");
 105   ADD_MEM (regs[9], 8);
 106   ADD_STRING ("   SL: ");
 107   ADD_MEM (regs[10], 8);
 108   ADD_STRING ("   FP: ");
 109   ADD_MEM (regs[11], 8);
 110   ADD_STRING ("\n IP: ");
 111   ADD_MEM (regs[12], 8);
 112   ADD_STRING ("   SP: ");
 113   ADD_MEM (regs[13], 8);
 114   ADD_STRING ("   LR: ");
 115   ADD_MEM (regs[14], 8);
 116   ADD_STRING ("   PC: ");
 117   ADD_MEM (regs[15], 8);
 118   ADD_STRING ("\n\n CPSR: ");
 119   ADD_MEM (regs[16], 8);
 120   ADD_STRING ("\n\n Trap: ");
 121   ADD_MEM (regs[17], 8);
 122   ADD_STRING ("   Error: ");
 123   ADD_MEM (regs[18], 8);
 124   ADD_STRING ("   OldMask: ");
 125   ADD_MEM (regs[19], 8);
 126   ADD_STRING ("\n Addr: ");
 127   ADD_MEM (regs[20], 8);
 128
 129   ADD_STRING ("\n");
 130
 131   /* Write the stuff out.  */
 132   writev (fd, iov, nr);
 133 }
 134
 135
 136 #define REGISTER_DUMP register_dump (fd, ctx)