Usermode/Libraries/libc++.so_src/exception_handling_acxx.h

   1 /*
   2  * Acess2 C++ Support Library
   3  * - By John Hodge (thePowersGang)
   4  *
   5  * exception_handling_acxx.h
   6  * - C++ Exception handling definions from HP's aC++ document
   7  *
   8  * Reference: http://mentorembedded.github.io/cxx-abi/exceptions.pdf
   9  */
  10 #ifndef _EXCEPTION_HANLDING_ACXX_H_
  11 #define _EXCEPTION_HANLDING_ACXX_H_
  12
  13 /**
  14  * \brief Language Specific Data Area
  15  * \note Pointer obtained via _Unwind_GetLanguageSpecificData
  16  */
  17 struct sLSDA_Header
  18 {
  19         const void      *Base;
  20         uintptr_t       LPStart;
  21         uint8_t         TTEncoding;
  22         uintptr_t       TypePtrBase;    // base address for type pointers
  23         uintptr_t       TTBase; // Base address for type offsets
  24         uint8_t CallSiteEncoding;
  25         const void      *CallSiteTable;
  26         const void      *ActionTable;
  27 };
  28
  29 /* Pointer encodings, from dwarf2.h.  */
  30 #define DW_EH_PE_absptr         0x00
  31 #define DW_EH_PE_omit           0xff
  32
  33 // - Data format (mask with 0x0F)
  34 #define DW_EH_PE_fmtmask        0x0F
  35 #define DW_EH_PE_uleb128        0x01
  36 #define DW_EH_PE_udata2         0x02
  37 #define DW_EH_PE_udata4         0x03
  38 #define DW_EH_PE_udata8         0x04
  39 #define DW_EH_PE_sleb128        0x09
  40 #define DW_EH_PE_sdata2         0x0A
  41 #define DW_EH_PE_sdata4         0x0B
  42 #define DW_EH_PE_sdata8         0x0C
  43 #define DW_EH_PE_signed         0x08
  44 // - Data maipulation (0x70)
  45 #define DW_EH_PE_relmask        0x70
  46 #define DW_EH_PE_pcrel          0x10
  47 #define DW_EH_PE_textrel        0x20
  48 #define DW_EH_PE_datarel        0x30
  49 #define DW_EH_PE_funcrel        0x40
  50 #define DW_EH_PE_aligned        0x50
  51
  52 #define DW_EH_PE_indirect       0x80
  53
  54 typedef uint64_t        leb128u_t;
  55 typedef  int64_t        leb128s_t;
  56
  57
  58 #endif
  59