arch/x86_64-all/exec/alert_cpu.c

   1 /*
   2     Copyright © 2011, The AROS Development Team. All rights reserved.
   3     $Id: alert_cpu.c 36262 2010-12-27 12:17:48Z sonic $
   4
   5     Desc: CPU context parsing routines, x86-64 version.
   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 = "RAX=%P  RBX=%P  RCX=%P  RDX=%P\n"
  18                              "RSI=%P  RDI=%P  RSP=%P  RBP=%P\n"
  19                              "R8 =%P  R9 =%P  R10=%P  R11=%P\n"
  20                              "R12=%P  R13=%P  R14=%P  R15=%P\n"
  21                              "RIP=%P  RSP=%P  RFLAGS=%P";
  22
  23 static const char *seg_fmt = "\nCS=%04lx  SS=%04lx  DS=%04lx\n"
  24                                "ES=%04lx  FS=%04lx  GS=%04lx";
  25
  26 char *FormatCPUContext(char *buffer, struct ExceptionContext *ctx, struct ExecBase *SysBase)
  27 {
  28     char *buf;
  29
  30     buf = NewRawDoFmt(gpr_fmt, RAWFMTFUNC_STRING, buffer,
  31                       ctx->rax, ctx->rbx, ctx->rcx, ctx->rdx,
  32                       ctx->rsi, ctx->rdi, ctx->rsp, ctx->rbp,
  33                       ctx->r8 , ctx->r9 , ctx->r10, ctx->r11,
  34                       ctx->r12, ctx->r13, ctx->r14, ctx->r15,
  35                       ctx->rip, ctx->rsp, ctx->rflags);
  36     if (ctx->Flags & ECF_SEGMENTS)
  37     {
  38         buf = NewRawDoFmt(seg_fmt, RAWFMTFUNC_STRING, buf - 1,
  39                           ctx->cs, ctx->ss, ctx->ds,
  40                           ctx->es, ctx->fs, ctx->gs);
  41     }
  42
  43     return buf - 1;
  44 }
  45
  46 /*
  47  * Unwind a single stack frame. CPU-dependent.
  48  * Note that for this to work you need to supply -fno-omit-frame-pointer to gcc.
  49  */
  50 APTR UnwindFrame(APTR fp, APTR *caller)
  51 {
  52     APTR *rbp = fp;
  53
  54     *caller = rbp[1];   /* Fill in caller address               */
  55     return rbp[0];      /* Return pointer to the previous frame */
  56 }