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Sweden-Number/dlls/dbghelp/symbol.c

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First shot at implementing dbghelp.
2004-04-06 00:21:27 +02:00
/*
* File symbol.c - management of symbols (lexical tree)
*
* Copyright (C) 1993, Eric Youngdale.
* 2004, Eric Pouech
*
* 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
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <limits.h>
#include <sys/types.h>
#include <assert.h>
#include <regex.h>
#include "wine/debug.h"
#include "dbghelp_private.h"
WINE_DEFAULT_DEBUG_CHANNEL(dbghelp);
WINE_DECLARE_DEBUG_CHANNEL(dbghelp_symtype);
#define DLIT_OFFSET 0x00
#define DLIT_FIRST 0x01
#define DLIT_LAST 0x02
#define DLIT_SOURCEFILE 0x04
struct line_info
{
unsigned long cookie : 3,
line_number;
union
{
unsigned long pc_offset;
unsigned source_file;
} u;
};
inline static int cmp_addr(DWORD a1, DWORD a2)
{
if (a1 > a2) return 1;
if (a1 < a2) return -1;
return 0;
}
inline static int cmp_sorttab_addr(const struct module* module, int idx, DWORD addr)
{
DWORD ref;
symt_get_info(&module->addr_sorttab[idx]->symt, TI_GET_ADDRESS, &ref);
return cmp_addr(ref, addr);
}
int symt_cmp_addr(const void* p1, const void* p2)
{
struct symt* sym1 = *(struct symt**)p1;
struct symt* sym2 = *(struct symt**)p2;
DWORD a1, a2;
symt_get_info(sym1, TI_GET_ADDRESS, &a1);
symt_get_info(sym2, TI_GET_ADDRESS, &a2);
return cmp_addr(a1, a2);
}
struct symt_compiland* symt_new_compiland(struct module* module, const char* name)
{
struct symt_compiland* sym;
TRACE_(dbghelp_symtype)("Adding compiland symbol %s:%s\n",
module->module.ModuleName, name);
if ((sym = pool_alloc(&module->pool, sizeof(*sym))))
{
sym->symt.tag = SymTagCompiland;
sym->source = source_new(module, name);
vector_init(&sym->vchildren, sizeof(struct symt*), 32);
}
return sym;
}
struct symt_public* symt_new_public(struct module* module,
struct symt_compiland* compiland,
const char* name,
unsigned long address, unsigned size,
BOOL in_code, BOOL is_func)
{
struct symt_public* sym;
struct symt** p;
TRACE_(dbghelp_symtype)("Adding public symbol %s:%s @%lx\n",
module->module.ModuleName, name, address);
if ((sym = pool_alloc(&module->pool, sizeof(*sym))))
{
sym->symt.tag = SymTagPublicSymbol;
sym->hash_elt.name = pool_strdup(&module->pool, name);
hash_table_add(&module->ht_symbols, &sym->hash_elt);
module->sortlist_valid = FALSE;
sym->container = compiland ? &compiland->symt : NULL;
sym->address = address;
sym->size = size;
sym->in_code = in_code;
sym->is_function = is_func;
if (compiland)
{
p = vector_add(&compiland->vchildren, &module->pool);
*p = &sym->symt;
}
}
return sym;
}
struct symt_data* symt_new_global_variable(struct module* module,
struct symt_compiland* compiland,
const char* name, unsigned is_static,
unsigned long addr, unsigned long size,
struct symt* type)
{
struct symt_data* sym;
struct symt** p;
TRACE_(dbghelp_symtype)("Adding global symbol %s:%s @%lx %p\n",
module->module.ModuleName, name, addr, type);
if ((sym = pool_alloc(&module->pool, sizeof(*sym))))
{
sym->symt.tag = SymTagData;
sym->hash_elt.name = pool_strdup(&module->pool, name);
hash_table_add(&module->ht_symbols, &sym->hash_elt);
module->sortlist_valid = FALSE;
sym->kind = is_static ? DataIsFileStatic : DataIsGlobal;
sym->container = compiland ? &compiland->symt : NULL;
sym->type = type;
sym->location = LocIsStatic; /* FIXME */
sym->u.address = addr;
if (compiland)
{
p = vector_add(&compiland->vchildren, &module->pool);
*p = &sym->symt;
}
}
return sym;
}
struct symt_function* symt_new_function(struct module* module,
struct symt_compiland* compiland,
const char* name,
unsigned long addr, unsigned long size,
struct symt* type)
{
struct symt_function* sym;
struct symt** p;
TRACE_(dbghelp_symtype)("Adding global function %s:%s @%lx-%lx\n",
module->module.ModuleName, name, addr, addr + size - 1);
if ((sym = pool_alloc(&module->pool, sizeof(*sym))))
{
sym->symt.tag = SymTagFunction;
sym->hash_elt.name = pool_strdup(&module->pool, name);
hash_table_add(&module->ht_symbols, &sym->hash_elt);
module->sortlist_valid = FALSE;
sym->container = &compiland->symt;
sym->addr = addr;
sym->type = type;
sym->size = size;
sym->addr = addr;
vector_init(&sym->vlines, sizeof(struct line_info), 64);
vector_init(&sym->vchildren, sizeof(struct symt*), 8);
if (compiland)
{
p = vector_add(&compiland->vchildren, &module->pool);
*p = &sym->symt;
}
}
return sym;
}
void symt_add_func_line(struct module* module, struct symt_function* func,
unsigned source_idx, int line_num, unsigned long offset)
{
struct line_info* dli;
BOOL last_matches = FALSE;
if (func == NULL || !(dbghelp_options & SYMOPT_LOAD_LINES)) return;
TRACE_(dbghelp_symtype)("(%p)%s:%lx %s:%u\n",
func, func->hash_elt.name, offset,
source_get(module, source_idx), line_num);
assert(func->symt.tag == SymTagFunction);
dli = NULL;
while ((dli = vector_iter_down(&func->vlines, dli)))
{
if (dli->cookie & DLIT_SOURCEFILE)
{
last_matches = (source_idx == dli->u.source_file);
break;
}
}
if (!last_matches)
{
/* we shouldn't have line changes on first line of function */
dli = vector_add(&func->vlines, &module->pool);
dli->cookie = DLIT_SOURCEFILE;
dli->line_number = 0;
dli->u.source_file = source_idx;
}
dli = vector_add(&func->vlines, &module->pool);
dli->cookie = DLIT_OFFSET;
dli->line_number = line_num;
dli->u.pc_offset = func->addr + offset;
}
struct symt_data* symt_add_func_local(struct module* module,
struct symt_function* func,
int regno, int offset,
struct symt_block* block,
struct symt* type, const char* name)
{
struct symt_data* locsym;
struct symt** p;
assert(func);
assert(func->symt.tag == SymTagFunction);
TRACE_(dbghelp_symtype)("Adding local symbol (%s:%s): %s %p\n",
module->module.ModuleName, func->hash_elt.name,
name, type);
locsym = pool_alloc(&module->pool, sizeof(*locsym));
locsym->symt.tag = SymTagData;
locsym->hash_elt.name = pool_strdup(&module->pool, name);
locsym->hash_elt.next = NULL;
locsym->kind = DataIsLocal;
locsym->container = &block->symt;
locsym->type = type;
if (regno)
{
locsym->location = LocIsEnregistered;
locsym->u.reg_id = regno;
}
else
{
locsym->location = LocIsRegRel;
locsym->u.reg_id = CV_REG_EBP;
locsym->u.offset = offset;
}
if (block)
p = vector_add(&block->vchildren, &module->pool);
else
p = vector_add(&func->vchildren, &module->pool);
*p = &locsym->symt;
return locsym;
}
struct symt_block* symt_open_func_block(struct module* module,
struct symt_function* func,
struct symt_block* parent_block,
unsigned pc)
{
struct symt_block* block;
struct symt** p;
assert(func);
assert(func->symt.tag == SymTagFunction);
assert(!parent_block || parent_block->symt.tag == SymTagBlock);
block = pool_alloc(&module->pool, sizeof(*block));
block->symt.tag = SymTagBlock;
block->address = func->addr + pc;
block->size = 0;
block->container = parent_block ? &parent_block->symt : &func->symt;
vector_init(&block->vchildren, sizeof(struct symt*), 4);
if (parent_block)
p = vector_add(&parent_block->vchildren, &module->pool);
else
p = vector_add(&func->vchildren, &module->pool);
*p = &block->symt;
return block;
}
struct symt_block* symt_close_func_block(struct module* module,
struct symt_function* func,
struct symt_block* block, unsigned pc)
{
assert(func->symt.tag == SymTagFunction);
block->size = func->addr + pc - block->address;
return (block->container->tag == SymTagBlock) ?
GET_ENTRY(block->container, struct symt_block, symt) : NULL;
}
BOOL symt_normalize_function(struct module* module, struct symt_function* func)
{
unsigned len;
struct line_info* dli;
if (!func) return TRUE;
/* We aren't adding any more locals or line numbers to this function.
* Free any spare memory that we might have allocated.
*/
assert(func->symt.tag == SymTagFunction);
/* EPP vector_pool_normalize(&func->vlines, &module->pool); */
/* EPP vector_pool_normalize(&func->vchildren, &module->pool); */
len = vector_length(&func->vlines);
if (len--)
{
dli = vector_at(&func->vlines, 0); dli->cookie |= DLIT_FIRST;
dli = vector_at(&func->vlines, len); dli->cookie |= DLIT_LAST;
}
return TRUE;
}
/* expect sym_info->MaxNameLen to be set before being called */
static void symt_fill_sym_info(const struct module* module,
const struct symt* sym, SYMBOL_INFO* sym_info)
{
const char* name;
sym_info->TypeIndex = (DWORD)sym;
sym_info->info = 0; /* TBD */
symt_get_info(sym, TI_GET_LENGTH, &sym_info->Size);
sym_info->ModBase = module->module.BaseOfImage;
sym_info->Flags = 0;
switch (sym->tag)
{
case SymTagData:
{
struct symt_data* data = (struct symt_data*)sym;
switch (data->location)
{
case LocIsEnregistered:
sym_info->Flags |= SYMFLAG_REGISTER;
sym_info->Register = data->u.reg_id;
sym_info->Address = 0;
break;
case LocIsRegRel:
sym_info->Flags |=
((data->u.offset < 0) ? SYMFLAG_LOCAL : SYMFLAG_PARAMETER) |
SYMFLAG_FRAMEREL;
sym_info->Register = data->u.reg_id;
sym_info->Address = data->u.offset;
break;
case LocIsStatic:
symt_get_info(sym, TI_GET_ADDRESS, &sym_info->Address);
sym_info->Register = 0;
break;
case LocIsConstant:
sym_info->Flags |= SYMFLAG_VALUEPRESENT;
sym_info->Value = data->u.value;
break;
default:
FIXME("Unhandled loc (%u) in sym data\n", data->location);
}
}
break;
case SymTagPublicSymbol:
sym_info->Flags |= SYMFLAG_EXPORT;
symt_get_info(sym, TI_GET_ADDRESS, &sym_info->Address);
break;
case SymTagFunction:
sym_info->Flags |= SYMFLAG_FUNCTION;
symt_get_info(sym, TI_GET_ADDRESS, &sym_info->Address);
break;
default:
symt_get_info(sym, TI_GET_ADDRESS, &sym_info->Address);
sym_info->Register = 0;
break;
}
sym_info->Scope = 0; /* FIXME */
sym_info->Tag = sym->tag;
name = symt_get_name(sym);
sym_info->NameLen = strlen(name) + 1;
if (sym_info->MaxNameLen)
{
strncpy(sym_info->Name, name, min(sym_info->NameLen, sym_info->MaxNameLen));
sym_info->Name[sym_info->MaxNameLen - 1] = '\0';
}
TRACE_(dbghelp_symtype)("%p => %s %lu %lx\n",
sym, sym_info->Name, sym_info->Size, sym_info->Address);
}
static BOOL symt_enum_module(struct module* module, const char* mask,
PSYM_ENUMERATESYMBOLS_CALLBACK cb, PVOID user)
{
char buffer[sizeof(SYMBOL_INFO) + 256];
SYMBOL_INFO* sym_info = (SYMBOL_INFO*)buffer;
void* ptr;
struct symt_ht* sym = NULL;
struct hash_table_iter hti;
regex_t preg;
assert(mask);
assert(mask[0] != '!');
regcomp(&preg, mask, REG_NOSUB);
hash_table_iter_init(&module->ht_symbols, &hti, NULL);
while ((ptr = hash_table_iter_up(&hti)))
{
sym = GET_ENTRY(ptr, struct symt_ht, hash_elt);
/* FIXME: this is not true, we should only drop the public
* symbol iff no other one is found
*/
if ((dbghelp_options & SYMOPT_AUTO_PUBLICS) &&
sym->symt.tag == SymTagPublicSymbol) continue;
if (sym->hash_elt.name &&
regexec(&preg, sym->hash_elt.name, 0, NULL, 0) == 0)
{
sym_info->SizeOfStruct = sizeof(SYMBOL_INFO);
sym_info->MaxNameLen = sizeof(buffer) - sizeof(SYMBOL_INFO);
symt_fill_sym_info(module, &sym->symt, sym_info);
if (!cb(sym_info, sym_info->Size, user)) break;
}
}
regfree(&preg);
return sym ? FALSE : TRUE;
}
/***********************************************************************
* resort_symbols
*
* Rebuild sorted list of symbols for a module.
*/
static BOOL resort_symbols(struct module* module)
{
int nsym = 0;
void* ptr;
struct symt_ht* sym;
struct hash_table_iter hti;
hash_table_iter_init(&module->ht_symbols, &hti, NULL);
while ((ptr = hash_table_iter_up(&hti)))
nsym++;
if (!(module->module.NumSyms = nsym)) return FALSE;
if (module->addr_sorttab)
module->addr_sorttab = HeapReAlloc(GetProcessHeap(), 0,
module->addr_sorttab,
nsym * sizeof(struct symt_ht*));
else
module->addr_sorttab = HeapAlloc(GetProcessHeap(), 0,
nsym * sizeof(struct symt_ht*));
if (!module->addr_sorttab) return FALSE;
nsym = 0;
hash_table_iter_init(&module->ht_symbols, &hti, NULL);
while ((ptr = hash_table_iter_up(&hti)))
{
sym = GET_ENTRY(ptr, struct symt_ht, hash_elt);
assert(sym);
module->addr_sorttab[nsym++] = sym;
}
qsort(module->addr_sorttab, nsym, sizeof(struct symt_ht*), symt_cmp_addr);
return module->sortlist_valid = TRUE;
}
/* assume addr is in module */
static int symt_find_nearest(struct module* module, DWORD addr)
{
int mid, high, low;
if (!module->sortlist_valid && !resort_symbols(module)) return -1;
/*
* Binary search to find closest symbol.
*/
low = 0;
high = module->module.NumSyms;
while (high > low + 1)
{
mid = (high + low) / 2;
if (cmp_sorttab_addr(module, mid, addr) < 0)
low = mid;
else
high = mid;
}
if (low != high && high != module->module.NumSyms &&
cmp_sorttab_addr(module, high, addr) <= 0)
low = high;
/* If found symbol is a public symbol, check if there are any other entries that
* might also have the same address, but would get better information
*/
if (module->addr_sorttab[low]->symt.tag == SymTagPublicSymbol)
{
DWORD ref;
symt_get_info(&module->addr_sorttab[low]->symt, TI_GET_ADDRESS, &ref);
if (low > 0 &&
module->addr_sorttab[low - 1]->symt.tag != SymTagPublicSymbol &&
!cmp_sorttab_addr(module, low - 1, ref))
low--;
else if (low < module->module.NumSyms - 1 &&
module->addr_sorttab[low + 1]->symt.tag != SymTagPublicSymbol &&
!cmp_sorttab_addr(module, low + 1, ref))
low++;
}
return low;
}
static BOOL symt_enum_locals_helper(struct process* pcs, struct module* module,
regex_t* preg, PSYM_ENUMERATESYMBOLS_CALLBACK cb,
PVOID user, SYMBOL_INFO* sym_info,
struct vector* v)
{
struct symt** plsym = NULL;
struct symt* lsym = NULL;
DWORD pc = pcs->ctx_frame.InstructionOffset;
while ((plsym = vector_iter_up(v, plsym)))
{
lsym = *plsym;
switch (lsym->tag)
{
case SymTagBlock:
{
struct symt_block* block = (struct symt_block*)lsym;
if (pc < block->address || block->address + block->size <= pc)
continue;
if (!symt_enum_locals_helper(pcs, module, preg, cb, user,
sym_info, &block->vchildren))
return FALSE;
}
break;
case SymTagData:
if (regexec(preg, symt_get_name(lsym), 0, NULL, 0) == 0)
{
symt_fill_sym_info(module, lsym, sym_info);
if (!cb(sym_info, sym_info->Size, user))
return FALSE;
}
break;
default:
FIXME("Unknown type: %u (%x)\n", lsym->tag, lsym->tag);
assert(0);
}
}
return TRUE;
}
static BOOL symt_enum_locals(struct process* pcs, const char* mask,
PSYM_ENUMERATESYMBOLS_CALLBACK EnumSymbolsCallback,
PVOID UserContext)
{
struct module* module;
struct symt_ht* sym;
char buffer[sizeof(SYMBOL_INFO) + 256];
SYMBOL_INFO* sym_info = (SYMBOL_INFO*)buffer;
DWORD pc = pcs->ctx_frame.InstructionOffset;
int idx;
sym_info->SizeOfStruct = sizeof(*sym_info);
sym_info->MaxNameLen = sizeof(buffer) - sizeof(SYMBOL_INFO);
module = module_find_by_addr(pcs, pc, DMT_UNKNOWN);
if (!(module = module_get_debug(pcs, module))) return FALSE;
if ((idx = symt_find_nearest(module, pc)) == -1) return FALSE;
sym = module->addr_sorttab[idx];
if (sym->symt.tag == SymTagFunction)
{
BOOL ret;
regex_t preg;
regcomp(&preg, mask ? mask : ".*", REG_NOSUB);
ret = symt_enum_locals_helper(pcs, module, &preg, EnumSymbolsCallback,
UserContext, sym_info,
&((struct symt_function*)sym)->vchildren);
regfree(&preg);
return ret;
}
symt_fill_sym_info(module, &sym->symt, sym_info);
return EnumSymbolsCallback(sym_info, sym_info->Size, UserContext);
}
/******************************************************************
* SymEnumSymbols (DBGHELP.@)
*
*/
BOOL WINAPI SymEnumSymbols(HANDLE hProcess, ULONG BaseOfDll, PCSTR Mask,
PSYM_ENUMERATESYMBOLS_CALLBACK EnumSymbolsCallback,
PVOID UserContext)
{
struct process* pcs = process_find_by_handle(hProcess);
struct module* module;
TRACE("(%p %08lx %s %p %p)\n",
hProcess, BaseOfDll, debugstr_a(Mask), EnumSymbolsCallback, UserContext);
if (!pcs) return FALSE;
if (BaseOfDll == 0)
{
if (Mask && Mask[0] == '!')
{
if (!Mask[1])
{
/* FIXME: is this really what's intended ??? */
for (module = pcs->lmodules; module; module = module->next)
{
if (module->module.SymType != SymNone &&
!symt_enum_module(module, ".*", EnumSymbolsCallback, UserContext))
break;
}
return TRUE;
}
module = module_find_by_name(pcs, &Mask[1], DMT_UNKNOWN);
Mask++;
}
else return symt_enum_locals(pcs, Mask, EnumSymbolsCallback, UserContext);
}
else
{
module = module_find_by_addr(pcs, BaseOfDll, DMT_UNKNOWN);
if (Mask && Mask[0] == '!')
{
if (!Mask[1] ||
strcmp(&Mask[1], module->module.ModuleName))
{
FIXME("Strange call mode\n");
return FALSE;
}
Mask = ".*";
}
else if (!Mask) Mask = ".*";
}
if ((module = module_get_debug(pcs, module)))
symt_enum_module(module, Mask, EnumSymbolsCallback, UserContext);
return TRUE;
}
struct sym_enumerate
{
void* ctx;
PSYM_ENUMSYMBOLS_CALLBACK cb;
};
static BOOL CALLBACK sym_enumerate_cb(PSYMBOL_INFO syminfo, ULONG size, void* ctx)
{
struct sym_enumerate* se = (struct sym_enumerate*)ctx;
return (se->cb)(syminfo->Name, syminfo->Address, syminfo->Size, se->ctx);
}
/***********************************************************************
* SymEnumerateSymbols (DBGHELP.@)
*/
BOOL WINAPI SymEnumerateSymbols(HANDLE hProcess, DWORD BaseOfDll,
PSYM_ENUMSYMBOLS_CALLBACK EnumSymbolsCallback,
PVOID UserContext)
{
struct sym_enumerate se;
se.ctx = UserContext;
se.cb = EnumSymbolsCallback;
return SymEnumSymbols(hProcess, BaseOfDll, NULL, sym_enumerate_cb, &se);
}
/******************************************************************
* SymFromAddr (DBGHELP.@)
*
*/
BOOL WINAPI SymFromAddr(HANDLE hProcess, DWORD Address,
DWORD* Displacement, PSYMBOL_INFO Symbol)
{
struct process* pcs = process_find_by_handle(hProcess);
struct module* module;
struct symt_ht* sym;
int idx;
if (!pcs) return FALSE;
module = module_find_by_addr(pcs, Address, DMT_UNKNOWN);
if (!(module = module_get_debug(pcs, module))) return FALSE;
if ((idx = symt_find_nearest(module, Address)) == -1) return FALSE;
sym = module->addr_sorttab[idx];
symt_fill_sym_info(module, &sym->symt, Symbol);
if (Displacement) *Displacement = Address - Symbol->Address;
return TRUE;
}
/******************************************************************
* SymGetSymFromAddr (DBGHELP.@)
*
*/
BOOL WINAPI SymGetSymFromAddr(HANDLE hProcess, DWORD Address,
PDWORD Displacement, PIMAGEHLP_SYMBOL Symbol)
{
char buffer[sizeof(SYMBOL_INFO) + 256];
SYMBOL_INFO*si = (SYMBOL_INFO*)buffer;
size_t len;
if (Symbol->SizeOfStruct < sizeof(*Symbol)) return FALSE;
si->SizeOfStruct = sizeof(*si);
si->MaxNameLen = 256;
if (!SymFromAddr(hProcess, Address, Displacement, si))
return FALSE;
Symbol->Address = si->Address;
Symbol->Size = si->Size;
Symbol->Flags = si->Flags;
len = min(Symbol->MaxNameLength, si->MaxNameLen);
strncpy(Symbol->Name, si->Name, len);
Symbol->Name[len - 1] = '\0';
return TRUE;
}
/******************************************************************
* SymFromName (DBGHELP.@)
*
*/
BOOL WINAPI SymFromName(HANDLE hProcess, LPSTR Name, PSYMBOL_INFO Symbol)
{
struct process* pcs = process_find_by_handle(hProcess);
struct module* module;
struct hash_table_iter hti;
void* ptr;
struct symt_ht* sym = NULL;
TRACE("(%p, %s, %p)\n", hProcess, Name, Symbol);
if (!pcs) return FALSE;
if (Symbol->SizeOfStruct < sizeof(*Symbol)) return FALSE;
for (module = pcs->lmodules; module; module = module->next)
{
if (module->module.SymType != SymNone)
{
if (module->module.SymType == SymDeferred)
{
struct module* xmodule = module_get_debug(pcs, module);
if (!xmodule) continue;
module = xmodule;
}
hash_table_iter_init(&module->ht_symbols, &hti, Name);
while ((ptr = hash_table_iter_up(&hti)))
{
sym = GET_ENTRY(ptr, struct symt_ht, hash_elt);
if (!strcmp(sym->hash_elt.name, Name))
{
symt_fill_sym_info(module, &sym->symt, Symbol);
return TRUE;
}
}
}
}
return FALSE;
}
/***********************************************************************
* SymGetSymFromName (DBGHELP.@)
*/
BOOL WINAPI SymGetSymFromName(HANDLE hProcess, LPSTR Name, PIMAGEHLP_SYMBOL Symbol)
{
char buffer[sizeof(SYMBOL_INFO) + 256];
SYMBOL_INFO*si = (SYMBOL_INFO*)buffer;
size_t len;
if (Symbol->SizeOfStruct < sizeof(*Symbol)) return FALSE;
si->SizeOfStruct = sizeof(*si);
si->MaxNameLen = 256;
if (!SymFromName(hProcess, Name, si)) return FALSE;
Symbol->Address = si->Address;
Symbol->Size = si->Size;
Symbol->Flags = si->Flags;
len = min(Symbol->MaxNameLength, si->MaxNameLen);
strncpy(Symbol->Name, si->Name, len);
Symbol->Name[len - 1] = '\0';
return TRUE;
}
/******************************************************************
* fill_line_info
*
* fills information about a file
*/
static BOOL fill_line_info(struct module* module, struct symt_function* func,
DWORD addr, IMAGEHLP_LINE* line)
{
struct line_info* dli = NULL;
BOOL found = FALSE;
assert(func->symt.tag == SymTagFunction);
while ((dli = vector_iter_down(&func->vlines, dli)))
{
if (!(dli->cookie & DLIT_SOURCEFILE))
{
if (found || dli->u.pc_offset > addr) continue;
line->LineNumber = dli->line_number;
line->Address = dli->u.pc_offset;
line->Key = dli;
found = TRUE;
continue;
}
if (found)
{
line->FileName = (char*)source_get(module, dli->u.source_file);
return TRUE;
}
}
return FALSE;
}
/***********************************************************************
* SymGetSymNext (DBGHELP.@)
*/
BOOL WINAPI SymGetSymNext(HANDLE hProcess, PIMAGEHLP_SYMBOL Symbol)
{
/* algo:
* get module from Symbol.Address
* get index in module.addr_sorttab of Symbol.Address
* increment index
* if out of module bounds, move to next module in process address space
*/
FIXME("(%p, %p): stub\n", hProcess, Symbol);
SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
return FALSE;
}
/***********************************************************************
* SymGetSymPrev (DBGHELP.@)
*/
BOOL WINAPI SymGetSymPrev(HANDLE hProcess, PIMAGEHLP_SYMBOL Symbol)
{
FIXME("(%p, %p): stub\n", hProcess, Symbol);
SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
return FALSE;
}
/******************************************************************
* SymGetLineFromAddr (DBGHELP.@)
*
*/
BOOL WINAPI SymGetLineFromAddr(HANDLE hProcess, DWORD dwAddr,
PDWORD pdwDisplacement, PIMAGEHLP_LINE Line)
{
struct process* pcs = process_find_by_handle(hProcess);
struct module* module;
int idx;
TRACE("%p %08lx %p %p\n", hProcess, dwAddr, pdwDisplacement, Line);
if (Line->SizeOfStruct < sizeof(*Line)) return FALSE;
if (!pcs) return FALSE;
module = module_find_by_addr(pcs, dwAddr, DMT_UNKNOWN);
if (!(module = module_get_debug(pcs, module))) return FALSE;
if ((idx = symt_find_nearest(module, dwAddr)) == -1) return FALSE;
if (module->addr_sorttab[idx]->symt.tag != SymTagFunction) return FALSE;
if (!fill_line_info(module,
(struct symt_function*)module->addr_sorttab[idx],
dwAddr, Line)) return FALSE;
if (pdwDisplacement) *pdwDisplacement = dwAddr - Line->Address;
return TRUE;
}
/******************************************************************
* SymGetLinePrev (DBGHELP.@)
*
*/
BOOL WINAPI SymGetLinePrev(HANDLE hProcess, PIMAGEHLP_LINE Line)
{
struct process* pcs = process_find_by_handle(hProcess);
struct module* module;
struct line_info* li;
BOOL in_search = FALSE;
TRACE("(%p %p)\n", hProcess, Line);
if (Line->SizeOfStruct < sizeof(*Line)) return FALSE;
if (!pcs) return FALSE;
module = module_find_by_addr(pcs, Line->Address, DMT_UNKNOWN);
if (!(module = module_get_debug(pcs, module))) return FALSE;
if (Line->Key == 0) return FALSE;
li = (struct line_info*)Line->Key;
/* things are a bit complicated because when we encounter a DLIT_SOURCEFILE
* element we have to go back until we find the prev one to get the real
* source file name for the DLIT_OFFSET element just before
* the first DLIT_SOURCEFILE
*/
while (!(li->cookie & DLIT_FIRST))
{
li--;
if (!(li->cookie & DLIT_SOURCEFILE))
{
Line->LineNumber = li->line_number;
Line->Address = li->u.pc_offset;
Line->Key = li;
if (!in_search) return TRUE;
}
else
{
if (in_search)
{
Line->FileName = (char*)source_get(module, li->u.source_file);
return TRUE;
}
in_search = TRUE;
}
}
SetLastError(ERROR_NO_MORE_ITEMS); /* FIXME */
return FALSE;
}
/******************************************************************
* SymGetLineNext (DBGHELP.@)
*
*/
BOOL WINAPI SymGetLineNext(HANDLE hProcess, PIMAGEHLP_LINE Line)
{
struct process* pcs = process_find_by_handle(hProcess);
struct module* module;
struct line_info* li;
TRACE("(%p %p)\n", hProcess, Line);
if (Line->SizeOfStruct < sizeof(*Line)) return FALSE;
if (!pcs) return FALSE;
module = module_find_by_addr(pcs, Line->Address, DMT_UNKNOWN);
if (!(module = module_get_debug(pcs, module))) return FALSE;
if (Line->Key == 0) return FALSE;
li = (struct line_info*)Line->Key;
while (!(li->cookie & DLIT_LAST))
{
li++;
if (!(li->cookie & DLIT_SOURCEFILE))
{
Line->LineNumber = li->line_number;
Line->Address = li->u.pc_offset;
Line->Key = li;
return TRUE;
}
Line->FileName = (char*)source_get(module, li->u.source_file);
}
SetLastError(ERROR_NO_MORE_ITEMS); /* FIXME */
return FALSE;
}
/***********************************************************************
* SymFunctionTableAccess (DBGHELP.@)
*/
PVOID WINAPI SymFunctionTableAccess(HANDLE hProcess, DWORD AddrBase)
{
FIXME("(%p, 0x%08lx): stub\n", hProcess, AddrBase);
SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
return FALSE;
}
/***********************************************************************
* SymUnDName (DBGHELP.@)
*/
BOOL WINAPI SymUnDName(PIMAGEHLP_SYMBOL sym, LPSTR UnDecName, DWORD UnDecNameLength)
{
FIXME("(%p %s %lu): stub\n", sym, UnDecName, UnDecNameLength);
return UnDecorateSymbolName(sym->Name, UnDecName, UnDecNameLength,
UNDNAME_COMPLETE);
}
/***********************************************************************
* UnDecorateSymbolName (DBGHELP.@)
*/
DWORD WINAPI UnDecorateSymbolName(LPCSTR DecoratedName, LPSTR UnDecoratedName,
DWORD UndecoratedLength, DWORD Flags)
{
FIXME("(%s, %p, %ld, 0x%08lx): stub\n",
debugstr_a(DecoratedName), UnDecoratedName, UndecoratedLength, Flags);
strncpy(UnDecoratedName, DecoratedName, UndecoratedLength);
UnDecoratedName[UndecoratedLength - 1] = '\0';
return TRUE;
}