dbghelp_private.h 33.5 KB
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/*
 * File dbghelp_private.h - dbghelp internal definitions
 *
 * Copyright (C) 1995, Alexandre Julliard
 * Copyright (C) 1996, Eric Youngdale.
 * Copyright (C) 1999-2000, Ulrich Weigand.
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 * Copyright (C) 2004-2007, Eric Pouech.
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 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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 */

#include <stdarg.h>
#include "windef.h"
#include "winbase.h"
#include "winver.h"
#include "dbghelp.h"
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#include "objbase.h"
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#include "oaidl.h"
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#include "winnls.h"
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#include "wine/list.h"
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#include "wine/rbtree.h"
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#include "cvconst.h"

/* #define USE_STATS */

struct pool /* poor's man */
{
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    struct list arena_list;
    struct list arena_full;
    size_t      arena_size;
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};

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void     pool_init(struct pool* a, size_t arena_size) DECLSPEC_HIDDEN;
void     pool_destroy(struct pool* a) DECLSPEC_HIDDEN;
void*    pool_alloc(struct pool* a, size_t len) DECLSPEC_HIDDEN;
char*    pool_strdup(struct pool* a, const char* str) DECLSPEC_HIDDEN;
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struct vector
{
    void**      buckets;
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    unsigned    elt_size;
    unsigned    shift;
    unsigned    num_elts;
    unsigned    num_buckets;
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    unsigned    buckets_allocated;
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};

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void     vector_init(struct vector* v, unsigned elt_sz, unsigned bucket_sz) DECLSPEC_HIDDEN;
unsigned vector_length(const struct vector* v) DECLSPEC_HIDDEN;
void*    vector_at(const struct vector* v, unsigned pos) DECLSPEC_HIDDEN;
void*    vector_add(struct vector* v, struct pool* pool) DECLSPEC_HIDDEN;
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struct sparse_array
{
    struct vector               key2index;
    struct vector               elements;
};

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void     sparse_array_init(struct sparse_array* sa, unsigned elt_sz, unsigned bucket_sz) DECLSPEC_HIDDEN;
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void*    sparse_array_find(const struct sparse_array* sa, ULONG_PTR idx) DECLSPEC_HIDDEN;
void*    sparse_array_add(struct sparse_array* sa, ULONG_PTR key, struct pool* pool) DECLSPEC_HIDDEN;
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unsigned sparse_array_length(const struct sparse_array* sa) DECLSPEC_HIDDEN;
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struct hash_table_elt
{
    const char*                 name;
    struct hash_table_elt*      next;
};

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struct hash_table_bucket
{
    struct hash_table_elt*      first;
    struct hash_table_elt*      last;
};

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struct hash_table
{
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    unsigned                    num_elts;
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    unsigned                    num_buckets;
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    struct hash_table_bucket*   buckets;
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    struct pool*                pool;
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};

void     hash_table_init(struct pool* pool, struct hash_table* ht,
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                         unsigned num_buckets) DECLSPEC_HIDDEN;
void     hash_table_destroy(struct hash_table* ht) DECLSPEC_HIDDEN;
void     hash_table_add(struct hash_table* ht, struct hash_table_elt* elt) DECLSPEC_HIDDEN;
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struct hash_table_iter
{
    const struct hash_table*    ht;
    struct hash_table_elt*      element;
    int                         index;
    int                         last;
};

void     hash_table_iter_init(const struct hash_table* ht,
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                              struct hash_table_iter* hti, const char* name) DECLSPEC_HIDDEN;
void*    hash_table_iter_up(struct hash_table_iter* hti) DECLSPEC_HIDDEN;
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extern unsigned dbghelp_options DECLSPEC_HIDDEN;
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extern BOOL     dbghelp_opt_native DECLSPEC_HIDDEN;
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extern SYSTEM_INFO sysinfo DECLSPEC_HIDDEN;
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enum location_kind {loc_error,          /* reg is the error code */
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                    loc_unavailable,    /* location is not available */
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                    loc_absolute,       /* offset is the location */
                    loc_register,       /* reg is the location */
                    loc_regrel,         /* [reg+offset] is the location */
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                    loc_tlsrel,         /* offset is the address of the TLS index */
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                    loc_user,           /* value is debug information dependent,
                                           reg & offset can be used ad libidem */
};

enum location_error {loc_err_internal = -1,     /* internal while computing */
                     loc_err_too_complex = -2,  /* couldn't compute location (even at runtime) */
                     loc_err_out_of_scope = -3, /* variable isn't available at current address */
                     loc_err_cant_read = -4,    /* couldn't read memory at given address */
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                     loc_err_no_location = -5,  /* likely optimized away (by compiler) */
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};

struct location
{
    unsigned            kind : 8,
                        reg;
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    ULONG_PTR           offset;
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};

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struct symt
{
    enum SymTagEnum             tag;
};

struct symt_ht
{
    struct symt                 symt;
    struct hash_table_elt       hash_elt;        /* if global symbol or type */
};

/* lexical tree */
struct symt_block
{
    struct symt                 symt;
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    ULONG_PTR                   address;
    ULONG_PTR                   size;
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    struct symt*                container;      /* block, or func */
    struct vector               vchildren;      /* sub-blocks & local variables */
};

struct symt_compiland
{
    struct symt                 symt;
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    ULONG_PTR                   address;
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    unsigned                    source;
    struct vector               vchildren;      /* global variables & functions */
};

struct symt_data
{
    struct symt                 symt;
    struct hash_table_elt       hash_elt;       /* if global symbol */
    enum DataKind               kind;
    struct symt*                container;
    struct symt*                type;
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    union                                       /* depends on kind */
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    {
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        /* DataIs{Global, FileStatic}:
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         *      with loc.kind
         *              loc_absolute    loc.offset is address
         *              loc_tlsrel      loc.offset is TLS index address
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         * DataIs{Local,Param}:
         *      with loc.kind
         *              loc_absolute    not supported
         *              loc_register    location is in register loc.reg
         *              loc_regrel      location is at address loc.reg + loc.offset
         *              >= loc_user     ask debug info provider for resolution
         */
        struct location         var;
        /* DataIs{Member} (all values are in bits, not bytes) */
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        struct
        {
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            LONG_PTR                    offset;
            ULONG_PTR                   length;
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        } member;
        /* DataIsConstant */
        VARIANT                 value;
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    } u;
};

struct symt_function
{
    struct symt                 symt;
    struct hash_table_elt       hash_elt;       /* if global symbol */
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    ULONG_PTR                   address;
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    struct symt*                container;      /* compiland */
    struct symt*                type;           /* points to function_signature */
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    ULONG_PTR                   size;
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    struct vector               vlines;
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    struct vector               vchildren;      /* locals, params, blocks, start/end, labels */
};

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struct symt_hierarchy_point
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{
    struct symt                 symt;           /* either SymTagFunctionDebugStart, SymTagFunctionDebugEnd, SymTagLabel */
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    struct hash_table_elt       hash_elt;       /* if label (and in compiland's hash table if global) */
    struct symt*                parent;         /* symt_function or symt_compiland */
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    struct location             loc;
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};

struct symt_public
{
    struct symt                 symt;
    struct hash_table_elt       hash_elt;
    struct symt*                container;      /* compiland */
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    BOOL is_function;
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    ULONG_PTR                   address;
    ULONG_PTR                   size;
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};

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struct symt_thunk
{
    struct symt                 symt;
    struct hash_table_elt       hash_elt;
    struct symt*                container;      /* compiland */
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    ULONG_PTR                   address;
    ULONG_PTR                   size;
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    THUNK_ORDINAL               ordinal;        /* FIXME: doesn't seem to be accessible */
};

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/* class tree */
struct symt_array
{
    struct symt                 symt;
    int		                start;
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    int		                end;            /* end index if > 0, or -array_len (in bytes) if < 0 */
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    struct symt*                base_type;
    struct symt*                index_type;
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};

struct symt_basic
{
    struct symt                 symt;
    struct hash_table_elt       hash_elt;
    enum BasicType              bt;
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    ULONG_PTR                   size;
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};

struct symt_enum
{
    struct symt                 symt;
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    struct symt*                base_type;
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    const char*                 name;
    struct vector               vchildren;
};

struct symt_function_signature
{
    struct symt                 symt;
    struct symt*                rettype;
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    struct vector               vchildren;
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    enum CV_call_e              call_conv;
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};

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struct symt_function_arg_type
{
    struct symt                 symt;
    struct symt*                arg_type;
    struct symt*                container;
};

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struct symt_pointer
{
    struct symt                 symt;
    struct symt*                pointsto;
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    ULONG_PTR                   size;
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};

struct symt_typedef
{
    struct symt                 symt;
    struct hash_table_elt       hash_elt;
    struct symt*                type;
};

struct symt_udt
{
    struct symt                 symt;
    struct hash_table_elt       hash_elt;
    enum UdtKind                kind;
    int		                size;
    struct vector               vchildren;
};

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enum module_type
{
    DMT_UNKNOWN,        /* for lookup, not actually used for a module */
    DMT_ELF,            /* a real ELF shared module */
    DMT_PE,             /* a native or builtin PE module */
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    DMT_MACHO,          /* a real Mach-O shared module */
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    DMT_PDB,            /* .PDB file */
    DMT_DBG,            /* .DBG file */
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};
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struct process;
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struct module;

/* a module can be made of several debug information formats, so we have to
 * support them all
 */
enum format_info
{
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    DFI_ELF,
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    DFI_PE,
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    DFI_MACHO,
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    DFI_DWARF,
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    DFI_PDB,
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    DFI_LAST
};

struct module_format
{
    struct module*              module;
    void                        (*remove)(struct process* pcs, struct module_format* modfmt);
    void                        (*loc_compute)(struct process* pcs,
                                               const struct module_format* modfmt,
                                               const struct symt_function* func,
                                               struct location* loc);
    union
    {
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        struct elf_module_info*         elf_info;
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        struct dwarf2_module_info_s*    dwarf2_info;
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        struct pe_module_info*          pe_info;
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        struct macho_module_info*	macho_info;
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        struct pdb_module_info*         pdb_info;
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    } u;
};
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struct module
{
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    struct process*             process;
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    IMAGEHLP_MODULEW64          module;
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    WCHAR                       modulename[64]; /* used for enumeration */
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    struct module*              next;
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    enum module_type		type : 16;
    unsigned short              is_virtual : 1;
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    DWORD64                     reloc_delta;
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    WCHAR*                      real_path;
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    /* specific information for debug types */
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    struct module_format*       format_info[DFI_LAST];
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    /* memory allocation pool */
    struct pool                 pool;

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    /* symbols & symbol tables */
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    struct vector               vsymt;
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    int                         sortlist_valid;
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    unsigned                    num_sorttab;    /* number of symbols with addresses */
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    unsigned                    num_symbols;
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    unsigned                    sorttab_size;
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    struct symt_ht**            addr_sorttab;
    struct hash_table           ht_symbols;

    /* types */
    struct hash_table           ht_types;
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    struct vector               vtypes;
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    /* source files */
    unsigned                    sources_used;
    unsigned                    sources_alloc;
    char*                       sources;
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    struct wine_rb_tree         sources_offsets_tree;
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};

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typedef BOOL (*enum_modules_cb)(const WCHAR*, ULONG_PTR addr, void* user);
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struct loader_ops
{
    BOOL (*synchronize_module_list)(struct process* process);
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    struct module* (*load_module)(struct process* process, const WCHAR* name, ULONG_PTR addr);
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    BOOL (*load_debug_info)(struct process *process, struct module* module);
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    BOOL (*enum_modules)(struct process* process, enum_modules_cb callback, void* user);
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    BOOL (*fetch_file_info)(struct process* process, const WCHAR* name, ULONG_PTR load_addr, DWORD_PTR* base, DWORD* size, DWORD* checksum);
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};

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struct process 
{
    struct process*             next;
    HANDLE                      handle;
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    const struct loader_ops*    loader;
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    WCHAR*                      search_path;
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    WCHAR*                      environment;
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    PSYMBOL_REGISTERED_CALLBACK64       reg_cb;
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    PSYMBOL_REGISTERED_CALLBACK reg_cb32;
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    BOOL                        reg_is_unicode;
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    DWORD64                     reg_user;
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    struct module*              lmodules;
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    ULONG_PTR                   dbg_hdr_addr;
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    IMAGEHLP_STACK_FRAME        ctx_frame;
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    unsigned                    buffer_size;
    void*                       buffer;
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    BOOL                        is_64bit;
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};

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static inline BOOL read_process_memory(const struct process *process, UINT64 addr, void *buf, size_t size)
{
    return ReadProcessMemory(process->handle, (void*)(UINT_PTR)addr, buf, size, NULL);
}

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struct line_info
{
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    ULONG_PTR                   is_first : 1,
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                                is_last : 1,
                                is_source_file : 1,
                                line_number;
    union
    {
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        ULONG_PTR                   pc_offset;   /* if is_source_file isn't set */
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        unsigned                    source_file; /* if is_source_file is set */
    } u;
};

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struct module_pair
{
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    struct process*             pcs;
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    struct module*              requested; /* in:  to module_get_debug() */
    struct module*              effective; /* out: module with debug info */
};

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enum pdb_kind {PDB_JG, PDB_DS};

struct pdb_lookup
{
    const char*                 filename;
    enum pdb_kind               kind;
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    DWORD                       age;
    DWORD                       timestamp;
    GUID                        guid;
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};

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struct cpu_stack_walk
{
    HANDLE                      hProcess;
    HANDLE                      hThread;
    BOOL                        is32;
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    struct cpu *                cpu;
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    union
    {
        struct
        {
            PREAD_PROCESS_MEMORY_ROUTINE        f_read_mem;
            PTRANSLATE_ADDRESS_ROUTINE          f_xlat_adr;
            PFUNCTION_TABLE_ACCESS_ROUTINE      f_tabl_acs;
            PGET_MODULE_BASE_ROUTINE            f_modl_bas;
        } s32;
        struct
        {
            PREAD_PROCESS_MEMORY_ROUTINE64      f_read_mem;
            PTRANSLATE_ADDRESS_ROUTINE64        f_xlat_adr;
            PFUNCTION_TABLE_ACCESS_ROUTINE64    f_tabl_acs;
            PGET_MODULE_BASE_ROUTINE64          f_modl_bas;
        } s64;
    } u;
};

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struct dump_memory
{
    ULONG64                             base;
    ULONG                               size;
    ULONG                               rva;
};

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struct dump_memory64
{
    ULONG64                             base;
    ULONG64                             size;
};

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struct dump_module
{
    unsigned                            is_elf;
    ULONG64                             base;
    ULONG                               size;
    DWORD                               timestamp;
    DWORD                               checksum;
    WCHAR                               name[MAX_PATH];
};

struct dump_thread
{
    ULONG                               tid;
    ULONG                               prio_class;
    ULONG                               curr_prio;
};

struct dump_context
{
    /* process & thread information */
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    struct process                     *process;
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    DWORD                               pid;
    unsigned                            flags_out;
    /* thread information */
    struct dump_thread*                 threads;
    unsigned                            num_threads;
    /* module information */
    struct dump_module*                 modules;
    unsigned                            num_modules;
    unsigned                            alloc_modules;
    /* exception information */
    /* output information */
    MINIDUMP_TYPE                       type;
    HANDLE                              hFile;
    RVA                                 rva;
    struct dump_memory*                 mem;
    unsigned                            num_mem;
    unsigned                            alloc_mem;
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    struct dump_memory64*               mem64;
    unsigned                            num_mem64;
    unsigned                            alloc_mem64;
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    /* callback information */
    MINIDUMP_CALLBACK_INFORMATION*      cb;
};

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union ctx
{
    CONTEXT ctx;
    WOW64_CONTEXT x86;
};

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enum cpu_addr {cpu_addr_pc, cpu_addr_stack, cpu_addr_frame};
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struct cpu
{
    DWORD       machine;
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    DWORD       word_size;
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    DWORD       frame_regno;

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    /* address manipulation */
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    BOOL        (*get_addr)(HANDLE hThread, const CONTEXT* ctx,
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                            enum cpu_addr, ADDRESS64* addr);

    /* stack manipulation */
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    BOOL        (*stack_walk)(struct cpu_stack_walk *csw, STACKFRAME64 *frame,
                              union ctx *ctx);
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    /* module manipulation */
    void*       (*find_runtime_function)(struct module*, DWORD64 addr);
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    /* dwarf dedicated information */
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    unsigned    (*map_dwarf_register)(unsigned regno, const struct module* module, BOOL eh_frame);
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    /* context related manipulation */
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    void *      (*fetch_context_reg)(union ctx *ctx, unsigned regno, unsigned *size);
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    const char* (*fetch_regname)(unsigned regno);
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    /* minidump per CPU extension */
    BOOL        (*fetch_minidump_thread)(struct dump_context* dc, unsigned index, unsigned flags, const CONTEXT* ctx);
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    BOOL        (*fetch_minidump_module)(struct dump_context* dc, unsigned index, unsigned flags);
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};

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extern struct cpu*      dbghelp_current_cpu DECLSPEC_HIDDEN;
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/* Abbreviated 32-bit PEB */
typedef struct _PEB32
{
    BOOLEAN InheritedAddressSpace;
    BOOLEAN ReadImageFileExecOptions;
    BOOLEAN BeingDebugged;
    BOOLEAN SpareBool;
    DWORD   Mutant;
    DWORD   ImageBaseAddress;
    DWORD   LdrData;
    DWORD   ProcessParameters;
    DWORD   SubSystemData;
    DWORD   ProcessHeap;
    DWORD   FastPebLock;
    DWORD   FastPebLockRoutine;
    DWORD   FastPebUnlockRoutine;
    ULONG   EnvironmentUpdateCount;
    DWORD   KernelCallbackTable;
    ULONG   Reserved[2];
} PEB32;

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/* dbghelp.c */
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extern struct process* process_find_by_handle(HANDLE hProcess) DECLSPEC_HIDDEN;
extern BOOL         validate_addr64(DWORD64 addr) DECLSPEC_HIDDEN;
extern BOOL         pcs_callback(const struct process* pcs, ULONG action, void* data) DECLSPEC_HIDDEN;
extern void*        fetch_buffer(struct process* pcs, unsigned size) DECLSPEC_HIDDEN;
extern const char*  wine_dbgstr_addr(const ADDRESS64* addr) DECLSPEC_HIDDEN;
extern struct cpu*  cpu_find(DWORD) DECLSPEC_HIDDEN;
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extern const WCHAR *process_getenv(const struct process *process, const WCHAR *name);
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extern DWORD calc_crc32(HANDLE handle) DECLSPEC_HIDDEN;
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/* elf_module.c */
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extern BOOL         elf_read_wine_loader_dbg_info(struct process* pcs, ULONG_PTR addr) DECLSPEC_HIDDEN;
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struct elf_thunk_area;
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extern int          elf_is_in_thunk_area(ULONG_PTR addr, const struct elf_thunk_area* thunks) DECLSPEC_HIDDEN;
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/* macho_module.c */
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extern BOOL         macho_read_wine_loader_dbg_info(struct process* pcs, ULONG_PTR addr) DECLSPEC_HIDDEN;
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/* minidump.c */
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void minidump_add_memory_block(struct dump_context* dc, ULONG64 base, ULONG size, ULONG rva) DECLSPEC_HIDDEN;
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/* module.c */
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extern const WCHAR      S_ElfW[] DECLSPEC_HIDDEN;
extern const WCHAR      S_WineLoaderW[] DECLSPEC_HIDDEN;
extern const WCHAR      S_SlashW[] DECLSPEC_HIDDEN;
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extern const struct loader_ops no_loader_ops DECLSPEC_HIDDEN;
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extern struct module*
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                    module_find_by_addr(const struct process* pcs, DWORD64 addr,
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                                        enum module_type type) DECLSPEC_HIDDEN;
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extern struct module*
                    module_find_by_nameW(const struct process* pcs,
                                         const WCHAR* name) DECLSPEC_HIDDEN;
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extern struct module*
                    module_find_by_nameA(const struct process* pcs,
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                                         const char* name) DECLSPEC_HIDDEN;
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extern struct module*
                    module_is_already_loaded(const struct process* pcs,
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                                             const WCHAR* imgname) DECLSPEC_HIDDEN;
extern BOOL         module_get_debug(struct module_pair*) DECLSPEC_HIDDEN;
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extern struct module*
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                    module_new(struct process* pcs, const WCHAR* name,
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                               enum module_type type, BOOL virtual,
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                               DWORD64 addr, DWORD64 size,
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                               ULONG_PTR stamp, ULONG_PTR checksum) DECLSPEC_HIDDEN;
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extern struct module*
                    module_get_containee(const struct process* pcs,
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                                         const struct module* inner) DECLSPEC_HIDDEN;
extern void         module_reset_debug_info(struct module* module) DECLSPEC_HIDDEN;
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extern BOOL         module_remove(struct process* pcs,
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                                  struct module* module) DECLSPEC_HIDDEN;
extern void         module_set_module(struct module* module, const WCHAR* name) DECLSPEC_HIDDEN;
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extern WCHAR *      get_wine_loader_name(struct process *pcs) DECLSPEC_HIDDEN;
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/* msc.c */
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extern BOOL         pe_load_debug_directory(const struct process* pcs,
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                                            struct module* module, 
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                                            const BYTE* mapping,
                                            const IMAGE_SECTION_HEADER* sectp, DWORD nsect,
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                                            const IMAGE_DEBUG_DIRECTORY* dbg, int nDbg) DECLSPEC_HIDDEN;
extern BOOL         pdb_fetch_file_info(const struct pdb_lookup* pdb_lookup, unsigned* matched) DECLSPEC_HIDDEN;
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struct pdb_cmd_pair {
    const char*         name;
    DWORD*              pvalue;
};
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extern BOOL pdb_virtual_unwind(struct cpu_stack_walk *csw, DWORD_PTR ip,
    union ctx *context, struct pdb_cmd_pair *cpair) DECLSPEC_HIDDEN;
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/* path.c */
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extern BOOL         path_find_symbol_file(const struct process* pcs, const struct module* module,
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                                          PCSTR full_path, enum module_type type, const GUID* guid, DWORD dw1, DWORD dw2,
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                                          WCHAR *buffer, BOOL* is_unmatched) DECLSPEC_HIDDEN;
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extern WCHAR *get_dos_file_name(const WCHAR *filename) DECLSPEC_HIDDEN;
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extern BOOL search_dll_path(const struct process* process, const WCHAR *name,
                            BOOL (*match)(void*, HANDLE, const WCHAR*), void *param) DECLSPEC_HIDDEN;
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extern BOOL search_unix_path(const WCHAR *name, const WCHAR *path, BOOL (*match)(void*, HANDLE, const WCHAR*), void *param) DECLSPEC_HIDDEN;
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extern const WCHAR* file_name(const WCHAR* str) DECLSPEC_HIDDEN;
extern const char* file_nameA(const char* str) DECLSPEC_HIDDEN;
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/* pe_module.c */
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extern BOOL         pe_load_nt_header(HANDLE hProc, DWORD64 base, IMAGE_NT_HEADERS* nth) DECLSPEC_HIDDEN;
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extern struct module*
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                    pe_load_native_module(struct process* pcs, const WCHAR* name,
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                                          HANDLE hFile, DWORD64 base, DWORD size) DECLSPEC_HIDDEN;
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extern struct module*
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                    pe_load_builtin_module(struct process* pcs, const WCHAR* name,
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                                           DWORD64 base, DWORD64 size) DECLSPEC_HIDDEN;
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extern BOOL         pe_load_debug_info(const struct process* pcs,
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                                       struct module* module) DECLSPEC_HIDDEN;
extern const char*  pe_map_directory(struct module* module, int dirno, DWORD* size) DECLSPEC_HIDDEN;
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/* source.c */
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extern unsigned     source_new(struct module* module, const char* basedir, const char* source) DECLSPEC_HIDDEN;
extern const char*  source_get(const struct module* module, unsigned idx) DECLSPEC_HIDDEN;
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extern int          source_rb_compare(const void *key, const struct wine_rb_entry *entry) DECLSPEC_HIDDEN;
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/* stabs.c */
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typedef void (*stabs_def_cb)(struct module* module, ULONG_PTR load_offset,
                                const char* name, ULONG_PTR offset,
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                                BOOL is_public, BOOL is_global, unsigned char other,
                                struct symt_compiland* compiland, void* user);
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extern BOOL         stabs_parse(struct module* module, ULONG_PTR load_offset,
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                                const char* stabs, size_t nstab, size_t stabsize,
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                                const char* strs, int strtablen,
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                                stabs_def_cb callback, void* user) DECLSPEC_HIDDEN;
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/* dwarf.c */
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struct image_file_map;
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extern BOOL         dwarf2_parse(struct module* module, ULONG_PTR load_offset,
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                                 const struct elf_thunk_area* thunks,
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                                 struct image_file_map* fmap) DECLSPEC_HIDDEN;
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extern BOOL dwarf2_virtual_unwind(struct cpu_stack_walk *csw, DWORD_PTR ip,
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    union ctx *ctx, DWORD64 *cfa) DECLSPEC_HIDDEN;
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/* stack.c */
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extern BOOL         sw_read_mem(struct cpu_stack_walk* csw, DWORD64 addr, void* ptr, DWORD sz) DECLSPEC_HIDDEN;
extern DWORD64      sw_xlat_addr(struct cpu_stack_walk* csw, ADDRESS64* addr) DECLSPEC_HIDDEN;
extern void*        sw_table_access(struct cpu_stack_walk* csw, DWORD64 addr) DECLSPEC_HIDDEN;
extern DWORD64      sw_module_base(struct cpu_stack_walk* csw, DWORD64 addr) DECLSPEC_HIDDEN;
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/* symbol.c */
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extern const char*  symt_get_name(const struct symt* sym) DECLSPEC_HIDDEN;
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extern WCHAR*       symt_get_nameW(const struct symt* sym) DECLSPEC_HIDDEN;
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extern BOOL         symt_get_address(const struct symt* type, ULONG64* addr) DECLSPEC_HIDDEN;
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extern int __cdecl  symt_cmp_addr(const void* p1, const void* p2) DECLSPEC_HIDDEN;
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extern void         copy_symbolW(SYMBOL_INFOW* siw, const SYMBOL_INFO* si) DECLSPEC_HIDDEN;
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extern struct symt_ht*
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                    symt_find_nearest(struct module* module, DWORD_PTR addr) DECLSPEC_HIDDEN;
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extern struct symt_compiland*
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                    symt_new_compiland(struct module* module, ULONG_PTR address,
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                                       unsigned src_idx) DECLSPEC_HIDDEN;
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extern struct symt_public*
                    symt_new_public(struct module* module, 
                                    struct symt_compiland* parent, 
                                    const char* typename,
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                                    BOOL is_function,
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                                    ULONG_PTR address,
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                                    unsigned size) DECLSPEC_HIDDEN;
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extern struct symt_data*
                    symt_new_global_variable(struct module* module, 
                                             struct symt_compiland* parent,
                                             const char* name, unsigned is_static,
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                                             struct location loc, ULONG_PTR size,
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                                             struct symt* type) DECLSPEC_HIDDEN;
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extern struct symt_function*
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                    symt_new_function(struct module* module,
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                                      struct symt_compiland* parent,
                                      const char* name,
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                                      ULONG_PTR addr, ULONG_PTR size,
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                                      struct symt* type) DECLSPEC_HIDDEN;
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extern BOOL         symt_normalize_function(struct module* module, 
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                                            const struct symt_function* func) DECLSPEC_HIDDEN;
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extern void         symt_add_func_line(struct module* module,
                                       struct symt_function* func, 
                                       unsigned source_idx, int line_num, 
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                                       ULONG_PTR offset) DECLSPEC_HIDDEN;
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extern struct symt_data*
                    symt_add_func_local(struct module* module, 
                                        struct symt_function* func, 
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                                        enum DataKind dt, const struct location* loc,
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                                        struct symt_block* block,
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                                        struct symt* type, const char* name) DECLSPEC_HIDDEN;
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extern struct symt_block*
                    symt_open_func_block(struct module* module, 
                                         struct symt_function* func,
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                                         struct symt_block* block, 
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                                         unsigned pc, unsigned len) DECLSPEC_HIDDEN;
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extern struct symt_block*
                    symt_close_func_block(struct module* module, 
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                                          const struct symt_function* func,
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                                          struct symt_block* block, unsigned pc) DECLSPEC_HIDDEN;
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extern struct symt_hierarchy_point*
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                    symt_add_function_point(struct module* module, 
                                            struct symt_function* func,
                                            enum SymTagEnum point, 
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                                            const struct location* loc,
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                                            const char* name) DECLSPEC_HIDDEN;
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extern BOOL         symt_fill_func_line_info(const struct module* module,
                                             const struct symt_function* func,
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                                             DWORD64 addr, IMAGEHLP_LINE64* line) DECLSPEC_HIDDEN;
extern BOOL         symt_get_func_line_next(const struct module* module, PIMAGEHLP_LINE64 line) DECLSPEC_HIDDEN;
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extern struct symt_thunk*
                    symt_new_thunk(struct module* module, 
                                   struct symt_compiland* parent,
                                   const char* name, THUNK_ORDINAL ord,
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                                   ULONG_PTR addr, ULONG_PTR size) DECLSPEC_HIDDEN;
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extern struct symt_data*
                    symt_new_constant(struct module* module,
                                      struct symt_compiland* parent,
                                      const char* name, struct symt* type,
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                                      const VARIANT* v) DECLSPEC_HIDDEN;
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extern struct symt_hierarchy_point*
                    symt_new_label(struct module* module,
                                   struct symt_compiland* compiland,
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                                   const char* name, ULONG_PTR address) DECLSPEC_HIDDEN;
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extern struct symt* symt_index2ptr(struct module* module, DWORD id) DECLSPEC_HIDDEN;
extern DWORD        symt_ptr2index(struct module* module, const struct symt* sym) DECLSPEC_HIDDEN;
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/* type.c */
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extern void         symt_init_basic(struct module* module) DECLSPEC_HIDDEN;
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extern BOOL         symt_get_info(struct module* module, const struct symt* type,
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                                  IMAGEHLP_SYMBOL_TYPE_INFO req, void* pInfo) DECLSPEC_HIDDEN;
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extern struct symt_basic*
                    symt_new_basic(struct module* module, enum BasicType, 
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                                   const char* typename, unsigned size) DECLSPEC_HIDDEN;
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extern struct symt_udt*
                    symt_new_udt(struct module* module, const char* typename,
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                                 unsigned size, enum UdtKind kind) DECLSPEC_HIDDEN;
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extern BOOL         symt_set_udt_size(struct module* module,
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                                      struct symt_udt* type, unsigned size) DECLSPEC_HIDDEN;
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extern BOOL         symt_add_udt_element(struct module* module, 
                                         struct symt_udt* udt_type, 
                                         const char* name,
                                         struct symt* elt_type, unsigned offset, 
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                                         unsigned size) DECLSPEC_HIDDEN;
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extern struct symt_enum*
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                    symt_new_enum(struct module* module, const char* typename,
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                                  struct symt* basetype) DECLSPEC_HIDDEN;
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extern BOOL         symt_add_enum_element(struct module* module, 
                                          struct symt_enum* enum_type, 
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                                          const char* name, int value) DECLSPEC_HIDDEN;
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extern struct symt_array*
                    symt_new_array(struct module* module, int min, int max, 
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                                   struct symt* base, struct symt* index) DECLSPEC_HIDDEN;
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extern struct symt_function_signature*
                    symt_new_function_signature(struct module* module, 
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                                                struct symt* ret_type,
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                                                enum CV_call_e call_conv) DECLSPEC_HIDDEN;
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extern BOOL         symt_add_function_signature_parameter(struct module* module,
                                                          struct symt_function_signature* sig,
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                                                          struct symt* param) DECLSPEC_HIDDEN;
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extern struct symt_pointer*
                    symt_new_pointer(struct module* module, 
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                                     struct symt* ref_type,
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                                     ULONG_PTR size) DECLSPEC_HIDDEN;
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extern struct symt_typedef*
                    symt_new_typedef(struct module* module, struct symt* ref, 
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                                     const char* name) DECLSPEC_HIDDEN;