200 lines
6.0 KiB
C
200 lines
6.0 KiB
C
/*-
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* Copyright (c) 2007 John Birrell (jb@freebsd.org)
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef __LIBDWARF_H_
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#define __LIBDWARF_H_
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#include <sys/param.h>
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#include <sys/queue.h>
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#include <stdio.h>
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#include <gelf.h>
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#include "dwarf.h"
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#include "libdwarf.h"
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#define DWARF_debug_abbrev 0
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#define DWARF_debug_aranges 1
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#define DWARF_debug_frame 2
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#define DWARF_debug_info 3
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#define DWARF_debug_line 4
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#define DWARF_debug_pubnames 5
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#define DWARF_eh_frame 6
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#define DWARF_debug_macinfo 7
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#define DWARF_debug_str 8
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#define DWARF_debug_loc 9
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#define DWARF_debug_pubtypes 10
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#define DWARF_debug_ranges 11
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#define DWARF_debug_static_func 12
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#define DWARF_debug_static_vars 13
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#define DWARF_debug_types 14
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#define DWARF_debug_weaknames 15
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#define DWARF_symtab 16
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#define DWARF_strtab 17
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#define DWARF_DEBUG_SNAMES 18
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#define DWARF_DIE_HASH_SIZE 8191
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#define DWARF_SET_ERROR(_e, _err) do { \
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_e->err_error = _err; \
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_e->elf_error = 0; \
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_e->err_func = __func__; \
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_e->err_line = __LINE__; \
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_e->err_msg[0] = '\0'; \
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} while (0)
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#define DWARF_SET_ELF_ERROR(_e, _err) do { \
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_e->err_error = DWARF_E_ELF; \
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_e->elf_error = _err; \
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_e->err_func = __func__; \
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_e->err_line = __LINE__; \
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_e->err_msg[0] = '\0'; \
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} while (0)
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struct _Dwarf_AttrValue {
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uint64_t av_attrib; /* DW_AT_ */
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uint64_t av_form; /* DW_FORM_ */
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union {
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uint64_t u64;
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int64_t s64;
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const char *s;
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uint8_t *u8p;
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} u[2]; /* Value. */
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STAILQ_ENTRY(_Dwarf_AttrValue)
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av_next; /* Next attribute value. */
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};
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struct _Dwarf_Die {
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int die_level; /* Parent-child level. */
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uint64_t die_offset; /* DIE offset in section. */
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uint64_t die_abnum; /* Abbrev number. */
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Dwarf_Abbrev die_a; /* Abbrev pointer. */
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Dwarf_CU die_cu; /* Compilation unit pointer. */
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const char *die_name; /* Ptr to the name string. */
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STAILQ_HEAD(, _Dwarf_AttrValue)
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die_attrval; /* List of attribute values. */
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STAILQ_ENTRY(_Dwarf_Die)
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die_next; /* Next die in list. */
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STAILQ_ENTRY(_Dwarf_Die)
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die_hash; /* Next die in hash table. */
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};
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struct _Dwarf_Attribute {
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uint64_t at_attrib; /* DW_AT_ */
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uint64_t at_form; /* DW_FORM_ */
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STAILQ_ENTRY(_Dwarf_Attribute)
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at_next; /* Next attribute. */
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};
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struct _Dwarf_Abbrev {
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uint64_t a_entry; /* Abbrev entry. */
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uint64_t a_tag; /* Tag: DW_TAG_ */
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uint8_t a_children; /* DW_CHILDREN_no or DW_CHILDREN_yes */
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STAILQ_HEAD(, _Dwarf_Attribute)
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a_attrib; /* List of attributes. */
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STAILQ_ENTRY(_Dwarf_Abbrev)
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a_next; /* Next abbrev. */
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};
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struct _Dwarf_CU {
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uint64_t cu_offset; /* Offset to the this compilation unit. */
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uint32_t cu_length; /* Length of CU data. */
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uint32_t cu_header_length;
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/* Length of the CU header. */
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uint16_t cu_version; /* DWARF version. */
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uint64_t cu_abbrev_offset;
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/* Offset into .debug_abbrev. */
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uint8_t cu_pointer_size;
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/* Number of bytes in pointer. */
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uint64_t cu_next_offset;
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/* Offset to the next compilation unit. */
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STAILQ_HEAD(, _Dwarf_Abbrev)
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cu_abbrev; /* List of abbrevs. */
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STAILQ_HEAD(, _Dwarf_Die)
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cu_die; /* List of dies. */
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STAILQ_HEAD(, _Dwarf_Die)
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cu_die_hash[DWARF_DIE_HASH_SIZE];
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/* Hash of dies. */
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STAILQ_ENTRY(_Dwarf_CU)
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cu_next; /* Next compilation unit. */
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};
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typedef struct _Dwarf_section {
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Elf_Scn *s_scn; /* Section pointer. */
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GElf_Shdr s_shdr; /* Copy of the section header. */
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char *s_sname; /* Ptr to the section name. */
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uint32_t s_shnum; /* Section number. */
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Elf_Data *s_data; /* Section data. */
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} Dwarf_section;
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struct _Dwarf_Debug {
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Elf *dbg_elf; /* Ptr to the ELF handle. */
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GElf_Ehdr dbg_ehdr; /* Copy of the ELF header. */
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int dbg_elf_close; /* True if elf_end() required. */
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int dbg_mode; /* Access mode. */
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size_t dbg_stnum; /* Section header string table section number. */
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int dbg_offsize; /* DWARF offset size. */
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Dwarf_section dbg_s[DWARF_DEBUG_SNAMES];
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/* Array of section information. */
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STAILQ_HEAD(, _Dwarf_CU)
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dbg_cu; /* List of compilation units. */
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Dwarf_CU dbg_cu_current;
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/* Ptr to the current compilation unit. */
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STAILQ_HEAD(, _Dwarf_Func) dbg_func; /* List of functions */
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};
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struct _Dwarf_Func {
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Dwarf_Die func_die;
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const char *func_name;
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Dwarf_Addr func_low_pc;
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Dwarf_Addr func_high_pc;
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int func_is_inlined;
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/* inlined instance */
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STAILQ_HEAD(, _Dwarf_Inlined_Func) func_inlined_instances;
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STAILQ_ENTRY(_Dwarf_Func) func_next;
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};
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struct _Dwarf_Inlined_Func {
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struct _Dwarf_Func *ifunc_origin;
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Dwarf_Die ifunc_abstract;
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Dwarf_Die ifunc_concrete;
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Dwarf_Addr ifunc_low_pc;
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Dwarf_Addr ifunc_high_pc;
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STAILQ_ENTRY(_Dwarf_Inlined_Func) ifunc_next;
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};
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void dwarf_build_function_table(Dwarf_Debug dbg);
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#ifdef DWARF_DEBUG
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#include <assert.h>
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#define DWARF_ASSERT(x) assert(x)
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#else
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#define DWARF_ASSERT(x)
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#endif
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#endif /* !__LIBDWARF_H_ */
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