arch/i386-all/exec/alert_cpu.c

   1 /*
   2     Copyright © 2010-2012, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc: CPU context parsing routines.
   6     Lang: english
   7 */
   8
   9 #include <exec/rawfmt.h>
  10 #include <proto/exec.h>
  11
  12 #include <string.h>
  13
  14 #include "exec_intern.h"
  15 #include "exec_util.h"
  16
  17 static const char *gpr_fmt = "EAX=0x%08lx  EBX=0x%08lx  ECX=0x%08lx  EDX=0x%08lx\n"
  18                              "ESI=0x%08lx  EDI=0x%08lx  ESP=0x%08lx  EBP=0x%08lx\n"
  19                              "EIP=0x%08lx  ESP=0x%08lx  EFLAGS=0x%08lx";
  20
  21 static const char *seg_fmt = "\nCS=%04lx  SS=%04lx  DS=%04lx\n"
  22                                "ES=%04lx  FS=%04lx  GS=%04lx";
  23
  24 char *FormatCPUContext(char *buffer, struct ExceptionContext *ctx, struct ExecBase *SysBase)
  25 {
  26     VOID_FUNC dest = buffer ? RAWFMTFUNC_STRING : RAWFMTFUNC_SERIAL;
  27     char *buf;
  28
  29     buf = NewRawDoFmt(gpr_fmt, dest, buffer,
  30                       ctx->eax, ctx->ebx, ctx->ecx, ctx->edx,
  31                       ctx->esi, ctx->edi, ctx->esp, ctx->ebp,
  32                       ctx->eip, ctx->esp, ctx->eflags);
  33     if (ctx->Flags & ECF_SEGMENTS)
  34     {
  35         buf = NewRawDoFmt(seg_fmt, dest, buf - 1,
  36                           ctx->cs, ctx->ss, ctx->ds,
  37                           ctx->es, ctx->fs, ctx->gs);
  38     }
  39
  40     return buf - 1;
  41 }
  42
  43 /* Unwind a single stack frame. CPU-dependent. */
  44 APTR UnwindFrame(APTR fp, APTR *caller)
  45 {
  46     APTR *ebp = fp;
  47
  48     *caller = ebp[1];   /* Fill in caller address               */
  49     return ebp[0];      /* Return pointer to the previous frame */
  50 }