usr/src/tools/ctf/dwarf/common/pro_frame.h

   1 /*
   2
   3   Copyright (C) 2000,2004 Silicon Graphics, Inc.  All Rights Reserved.
   4
   5   This program is free software; you can redistribute it and/or modify it
   6   under the terms of version 2.1 of the GNU Lesser General Public License
   7   as published by the Free Software Foundation.
   8
   9   This program is distributed in the hope that it would be useful, but
  10   WITHOUT ANY WARRANTY; without even the implied warranty of
  11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  12
  13   Further, this software is distributed without any warranty that it is
  14   free of the rightful claim of any third person regarding infringement
  15   or the like.  Any license provided herein, whether implied or
  16   otherwise, applies only to this software file.  Patent licenses, if
  17   any, provided herein do not apply to combinations of this program with
  18   other software, or any other product whatsoever.
  19
  20   You should have received a copy of the GNU Lesser General Public
  21   License along with this program; if not, write the Free Software
  22   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston MA 02110-1301,
  23   USA.
  24
  25   Contact information:  Silicon Graphics, Inc., 1500 Crittenden Lane,
  26   Mountain View, CA 94043, or:
  27
  28   http://www.sgi.com
  29
  30   For further information regarding this notice, see:
  31
  32   http://oss.sgi.com/projects/GenInfo/NoticeExplan
  33
  34 */
  35
  36
  37
  38 /*
  39     Largest register value that can be coded into
  40     the opcode since there are only 6 bits in the
  41     register field.
  42 */
  43 #define MAX_6_BIT_VALUE         0x3f
  44
  45 /*
  46         This struct holds debug_frame instructions
  47 */
  48 typedef struct Dwarf_P_Frame_Pgm_s *Dwarf_P_Frame_Pgm;
  49
  50 struct Dwarf_P_Frame_Pgm_s {
  51     Dwarf_Ubyte dfp_opcode;     /* opcode - includes reg # */
  52     char *dfp_args;             /* operands */
  53     int dfp_nbytes;             /* number of bytes in args */
  54 #if 0
  55     Dwarf_Unsigned dfp_sym_index;       /* 0 unless reloc needed */
  56 #endif
  57     Dwarf_P_Frame_Pgm dfp_next;
  58 };
  59
  60
  61 /*
  62         This struct has cie related information. Used to gather data
  63         from user program, and later to transform to disk form
  64 */
  65 struct Dwarf_P_Cie_s {
  66     Dwarf_Ubyte cie_version;
  67     char *cie_aug;              /* augmentation */
  68     Dwarf_Ubyte cie_code_align; /* alignment of code */
  69     Dwarf_Sbyte cie_data_align;
  70     Dwarf_Ubyte cie_ret_reg;    /* return register # */
  71     char *cie_inst;             /* initial instruction */
  72     long cie_inst_bytes;
  73     /* no of init_inst */
  74     Dwarf_P_Cie cie_next;
  75 };
  76
  77
  78 /* producer fields */
  79 struct Dwarf_P_Fde_s {
  80     Dwarf_Unsigned fde_unused1;
  81
  82     /* function/subr die for this fde */
  83     Dwarf_P_Die fde_die;
  84
  85     /* index to asso. cie */
  86     Dwarf_Word fde_cie;
  87
  88     /* Address of first location of the code this frame applies to If
  89        fde_end_symbol non-zero, this represents the offset from the
  90        symbol indicated by fde_r_symidx */
  91     Dwarf_Addr fde_initloc;
  92
  93     /* Relocation symbol for address of the code this frame applies to.
  94      */
  95     Dwarf_Unsigned fde_r_symidx;
  96
  97     /* Bytes of instr for this fde, if known */
  98     Dwarf_Unsigned fde_addr_range;
  99
 100     /* linked list of instructions we will put in fde. */
 101     Dwarf_P_Frame_Pgm fde_inst;
 102
 103     /* number of instructions in fde */
 104     long fde_n_inst;
 105
 106     /* number of bytes of inst in fde */
 107     long fde_n_bytes;
 108
 109     /* offset into exception table for this function. */
 110     Dwarf_Signed fde_offset_into_exception_tables;
 111
 112     /* The symbol for the exception table elf section. */
 113     Dwarf_Unsigned fde_exception_table_symbol;
 114
 115     /* pointer to last inst */
 116     Dwarf_P_Frame_Pgm fde_last_inst;
 117
 118     Dwarf_P_Fde fde_next;
 119
 120     /* The symbol and offset of the end symbol. When fde_end_symbol is
 121        non-zero we must represent the */
 122     Dwarf_Addr fde_end_symbol_offset;
 123     Dwarf_Unsigned fde_end_symbol;
 124
 125     int fde_uwordb_size;
 126     Dwarf_P_Debug fde_dbg;
 127
 128     /* If fde_block is non-null, then it is the set of instructions.
 129        so we should use it rather than fde_inst. */
 130     Dwarf_Unsigned fde_inst_block_size;
 131     void *fde_block;
 132 };