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https://github.com/davea42/libdwarf-code.git
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25aad438e2
(dwarf_add_frame_cie()) was simply assuming that the augmentation string passed in was in stable storage. Now it uses strdup() to guarantee there no surprises.
126 lines
3.7 KiB
C
126 lines
3.7 KiB
C
/*
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Copyright (C) 2000,2004 Silicon Graphics, Inc. All Rights Reserved.
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This program is free software; you can redistribute it and/or modify it
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under the terms of version 2.1 of the GNU Lesser General Public License
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as published by the Free Software Foundation.
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This program is distributed in the hope that it would be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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Further, this software is distributed without any warranty that it is
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free of the rightful claim of any third person regarding infringement
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or the like. Any license provided herein, whether implied or
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otherwise, applies only to this software file. Patent licenses, if
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any, provided herein do not apply to combinations of this program with
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other software, or any other product whatsoever.
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You should have received a copy of the GNU Lesser General Public
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License along with this program; if not, write the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston MA 02110-1301,
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USA.
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*/
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/*
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Largest register value that can be coded into
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the opcode since there are only 6 bits in the
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register field.
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*/
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#define MAX_6_BIT_VALUE 0x3f
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/* This struct holds debug_frame instructions */
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typedef struct Dwarf_P_Frame_Pgm_s *Dwarf_P_Frame_Pgm;
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struct Dwarf_P_Frame_Pgm_s {
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Dwarf_Ubyte dfp_opcode; /* opcode - includes reg # */
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char *dfp_args; /* operands */
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int dfp_nbytes; /* number of bytes in args */
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#if 0
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Dwarf_Unsigned dfp_sym_index; /* 0 unless reloc needed */
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#endif
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Dwarf_P_Frame_Pgm dfp_next;
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};
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/*
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This struct has cie related information. Used to gather data
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from user program, and later to transform to disk form
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*/
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struct Dwarf_P_Cie_s {
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Dwarf_Ubyte cie_version;
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/* augmentation. The string is an strdup() copy
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and on freeing the Dwarf_P_Cie the string must be freed. */
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char *cie_aug;
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Dwarf_Ubyte cie_code_align; /* alignment of code */
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Dwarf_Sbyte cie_data_align;
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Dwarf_Ubyte cie_ret_reg; /* return register # */
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char *cie_inst; /* initial instruction */
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long cie_inst_bytes;
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/* no of init_inst */
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Dwarf_P_Cie cie_next;
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};
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/* producer fields */
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struct Dwarf_P_Fde_s {
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Dwarf_Unsigned fde_unused1;
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/* function/subr die for this fde */
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Dwarf_P_Die fde_die;
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/* index to asso. cie */
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Dwarf_Word fde_cie;
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/* Address of first location of the code this frame applies to If
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fde_end_symbol non-zero, this represents the offset from the
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symbol indicated by fde_r_symidx */
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Dwarf_Addr fde_initloc;
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/* Relocation symbol for address of the code this frame applies to. */
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Dwarf_Unsigned fde_r_symidx;
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/* Bytes of instr for this fde, if known */
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Dwarf_Unsigned fde_addr_range;
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/* linked list of instructions we will put in fde. */
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Dwarf_P_Frame_Pgm fde_inst;
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/* number of instructions in fde */
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long fde_n_inst;
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/* number of bytes of inst in fde */
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long fde_n_bytes;
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/* offset into exception table for this function. */
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Dwarf_Signed fde_offset_into_exception_tables;
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/* The symbol for the exception table elf section. */
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Dwarf_Unsigned fde_exception_table_symbol;
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/* pointer to last inst */
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Dwarf_P_Frame_Pgm fde_last_inst;
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Dwarf_P_Fde fde_next;
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/* The symbol and offset of the end symbol. When fde_end_symbol is
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non-zero we must represent the */
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Dwarf_Addr fde_end_symbol_offset;
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Dwarf_Unsigned fde_end_symbol;
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int fde_uwordb_size;
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Dwarf_P_Debug fde_dbg;
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/* If fde_block is non-null, then it is the set of instructions.
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so we should use it rather than fde_inst. */
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Dwarf_Unsigned fde_inst_block_size;
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void *fde_block;
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};
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