lib/unwarminder/unwarminder.c

   1 /***************************************************************************
   2  * ARM Stack Unwinder, Michael.McTernan.2001@cs.bris.ac.uk
   3  *
   4  * This program is PUBLIC DOMAIN.
   5  * This means that there is no copyright and anyone is able to take a copy
   6  * for free and use it as they wish, with or without modifications, and in
   7  * any context, commercially or otherwise. The only limitation is that I
   8  * don't guarantee that the software is fit for any purpose or accept any
   9  * liability for it's use or misuse - this software is without warranty.
  10  ***************************************************************************
  11  * File Description: Implementation of the interface into the ARM unwinder.
  12  **************************************************************************/
  13
  14 #define MODULE_NAME "UNWARMINDER"
  15
  16 /***************************************************************************
  17  * Include Files
  18  **************************************************************************/
  19
  20 #include "types.h"
  21 #include <stdio.h>
  22 #include <string.h>
  23 #include "unwarminder.h"
  24 #include "unwarm.h"
  25
  26
  27 /***************************************************************************
  28  * Manifest Constants
  29  **************************************************************************/
  30
  31
  32 /***************************************************************************
  33  * Type Definitions
  34  **************************************************************************/
  35
  36
  37 /***************************************************************************
  38  * Variables
  39  **************************************************************************/
  40
  41
  42 /***************************************************************************
  43  * Macros
  44  **************************************************************************/
  45
  46
  47 /***************************************************************************
  48  * Local Functions
  49  **************************************************************************/
  50
  51
  52 /***************************************************************************
  53  * Global Functions
  54  **************************************************************************/
  55
  56 UnwResult UnwindStart(Int32                  pcValue,
  57                       Int32                  spValue,
  58                       const UnwindCallbacks *cb,
  59                       void                  *data)
  60 {
  61     UnwState state;
  62
  63     /* Initialise the unwinding state */
  64     UnwInitState(&state, cb, data, pcValue, spValue);
  65
  66     /* Check the Thumb bit */
  67     if(pcValue & 0x1)
  68     {
  69         return UnwStartThumb(&state);
  70     }
  71     else
  72     {
  73         return UnwStartArm(&state);
  74     }
  75 }
  76
  77 /* END OF FILE */
  78