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

   1 /* Dump registers.
   2    Copyright (C) 1998, 1999, 2001 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, write to the Free
  18    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19    02111-1307 USA.  */
  20
  21 #include <sys/uio.h>
  22 #include <stdio-common/_itoa.h>
  23 #include <bits/armsigctx.h>
  24
  25 /* We will print the register dump in this format:
  26
  27  R0: XXXXXXXX   R1: XXXXXXXX   R2: XXXXXXXX   R3: XXXXXXXX
  28  R4: XXXXXXXX   R5: XXXXXXXX   R6: XXXXXXXX   R7: XXXXXXXX
  29  R8: XXXXXXXX   R9: XXXXXXXX   SL: XXXXXXXX   FP: XXXXXXXX
  30  IP: XXXXXXXX   SP: XXXXXXXX   LR: XXXXXXXX   PC: XXXXXXXX
  31
  32  CPSR: XXXXXXXX
  33
  34  Trap: XXXXXXXX   Error: XXXXXXXX   OldMask: XXXXXXXX
  35  Addr: XXXXXXXX
  36
  37  */
  38
  39 static void
  40 hexvalue (unsigned long int value, char *buf, size_t len)
  41 {
  42   char *cp = _itoa_word (value, buf + len, 16, 0);
  43   while (cp > buf)
  44     *--cp = '0';
  45 }
  46
  47 static void
  48 register_dump (int fd, union k_sigcontext *ctx)
  49 {
  50   char regs[21][8];
  51   struct iovec iov[97];
  52   size_t nr = 0;
  53
  54 #define ADD_STRING(str) \
  55   iov[nr].iov_base = (char *) str;                                            \
  56   iov[nr].iov_len = strlen (str);                                             \
  57   ++nr
  58 #define ADD_MEM(str, len) \
  59   iov[nr].iov_base = str;                                                     \
  60   iov[nr].iov_len = len;                                                      \
  61   ++nr
  62
  63   /* Generate strings of register contents.  */
  64   if (ctx->v20.magic == SIGCONTEXT_2_0_MAGIC)
  65     {
  66       hexvalue (ctx->v20.reg.ARM_r0, regs[0], 8);
  67       hexvalue (ctx->v20.reg.ARM_r1, regs[1], 8);
  68       hexvalue (ctx->v20.reg.ARM_r2, regs[2], 8);
  69       hexvalue (ctx->v20.reg.ARM_r3, regs[3], 8);
  70       hexvalue (ctx->v20.reg.ARM_r4, regs[4], 8);
  71       hexvalue (ctx->v20.reg.ARM_r5, regs[5], 8);
  72       hexvalue (ctx->v20.reg.ARM_r6, regs[6], 8);
  73       hexvalue (ctx->v20.reg.ARM_r7, regs[7], 8);
  74       hexvalue (ctx->v20.reg.ARM_r8, regs[8], 8);
  75       hexvalue (ctx->v20.reg.ARM_r9, regs[9], 8);
  76       hexvalue (ctx->v20.reg.ARM_r10, regs[10], 8);
  77       hexvalue (ctx->v20.reg.ARM_fp, regs[11], 8);
  78       hexvalue (ctx->v20.reg.ARM_ip, regs[12], 8);
  79       hexvalue (ctx->v20.reg.ARM_sp, regs[13], 8);
  80       hexvalue (ctx->v20.reg.ARM_lr, regs[14], 8);
  81       hexvalue (ctx->v20.reg.ARM_pc, regs[15], 8);
  82       hexvalue (ctx->v20.reg.ARM_cpsr, regs[16], 8);
  83       hexvalue (ctx->v20.trap_no, regs[17], 8);
  84       hexvalue (ctx->v20.error_code, regs[18], 8);
  85       hexvalue (ctx->v20.oldmask, regs[19], 8);
  86     }
  87   else
  88     {
  89       hexvalue (ctx->v21.arm_r0, regs[0], 8);
  90       hexvalue (ctx->v21.arm_r1, regs[1], 8);
  91       hexvalue (ctx->v21.arm_r2, regs[2], 8);
  92       hexvalue (ctx->v21.arm_r3, regs[3], 8);
  93       hexvalue (ctx->v21.arm_r4, regs[4], 8);
  94       hexvalue (ctx->v21.arm_r5, regs[5], 8);
  95       hexvalue (ctx->v21.arm_r6, regs[6], 8);
  96       hexvalue (ctx->v21.arm_r7, regs[7], 8);
  97       hexvalue (ctx->v21.arm_r8, regs[8], 8);
  98       hexvalue (ctx->v21.arm_r9, regs[9], 8);
  99       hexvalue (ctx->v21.arm_r10, regs[10], 8);
 100       hexvalue (ctx->v21.arm_fp, regs[11], 8);
 101       hexvalue (ctx->v21.arm_ip, regs[12], 8);
 102       hexvalue (ctx->v21.arm_sp, regs[13], 8);
 103       hexvalue (ctx->v21.arm_lr, regs[14], 8);
 104       hexvalue (ctx->v21.arm_pc, regs[15], 8);
 105       hexvalue (ctx->v21.arm_cpsr, regs[16], 8);
 106       hexvalue (ctx->v21.trap_no, regs[17], 8);
 107       hexvalue (ctx->v21.error_code, regs[18], 8);
 108       hexvalue (ctx->v21.oldmask, regs[19], 8);
 109       hexvalue (ctx->v21.fault_address, regs[20], 8);
 110     }
 111
 112   /* Generate the output.  */
 113   ADD_STRING ("Register dump:\n\n R0: ");
 114   ADD_MEM (regs[0], 8);
 115   ADD_STRING ("   R1: ");
 116   ADD_MEM (regs[1], 8);
 117   ADD_STRING ("   R2: ");
 118   ADD_MEM (regs[2], 8);
 119   ADD_STRING ("   R3: ");
 120   ADD_MEM (regs[3], 8);
 121   ADD_STRING ("\n R4: ");
 122   ADD_MEM (regs[4], 8);
 123   ADD_STRING ("   R5: ");
 124   ADD_MEM (regs[5], 8);
 125   ADD_STRING ("   R6: ");
 126   ADD_MEM (regs[6], 8);
 127   ADD_STRING ("   R7: ");
 128   ADD_MEM (regs[7], 8);
 129   ADD_STRING ("\n R8: ");
 130   ADD_MEM (regs[8], 8);
 131   ADD_STRING ("   R9: ");
 132   ADD_MEM (regs[9], 8);
 133   ADD_STRING ("   SL: ");
 134   ADD_MEM (regs[10], 8);
 135   ADD_STRING ("   FP: ");
 136   ADD_MEM (regs[11], 8);
 137   ADD_STRING ("\n IP: ");
 138   ADD_MEM (regs[12], 8);
 139   ADD_STRING ("   SP: ");
 140   ADD_MEM (regs[13], 8);
 141   ADD_STRING ("   LR: ");
 142   ADD_MEM (regs[14], 8);
 143   ADD_STRING ("   PC: ");
 144   ADD_MEM (regs[15], 8);
 145   ADD_STRING ("\n\n CPSR: ");
 146   ADD_MEM (regs[16], 8);
 147   ADD_STRING ("\n\n Trap: ");
 148   ADD_MEM (regs[17], 8);
 149   ADD_STRING ("   Error: ");
 150   ADD_MEM (regs[18], 8);
 151   ADD_STRING ("   OldMask: ");
 152   ADD_MEM (regs[19], 8);
 153   if (ctx->v20.magic != SIGCONTEXT_2_0_MAGIC)
 154     {
 155       ADD_STRING ("\n Addr: ");
 156       ADD_MEM (regs[20], 8);
 157     }
 158
 159   ADD_STRING ("\n");
 160
 161   /* Write the stuff out.  */
 162   writev (fd, iov, nr);
 163 }
 164
 165
 166 #define REGISTER_DUMP register_dump (fd, &ctx)