dbghelp: Add internal_line_t structure as help in Line manipulation.
the rationale is that: - the file name in IMAGEHLP_LINE* structures is returned as a pointer to an internal buffer - in the W64 variant of APIs, two calls to fetch_buffer() are currently needed (one for first A allocation, second for W conversion) - this generate bugs as it's assumed the two buffers are different so the internal_line_t purpose is to factorize the implementations of the 3 variants (A32, A64, W64) into a single code path this insures a unique allocation, and at most, one conversion Signed-off-by: Eric Pouech <eric.pouech@gmail.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
parent
d459301de6
commit
fabc4f7e12
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@ -1516,19 +1516,129 @@ BOOL WINAPI SymGetSymFromName(HANDLE hProcess, PCSTR Name, PIMAGEHLP_SYMBOL Symb
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return TRUE;
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}
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struct internal_line_t
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{
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BOOL unicode;
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PVOID key;
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DWORD line_number;
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union
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{
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CHAR* file_nameA;
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WCHAR* file_nameW;
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};
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DWORD64 address;
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};
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static void init_internal_line(struct internal_line_t* intl, BOOL unicode)
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{
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intl->unicode = unicode;
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intl->key = NULL;
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intl->line_number = 0;
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intl->file_nameA = NULL;
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intl->address = 0;
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}
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static BOOL internal_line_copy_toA32(const struct internal_line_t* intl, IMAGEHLP_LINE* l32)
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{
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if (intl->unicode) return FALSE;
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l32->Key = intl->key;
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l32->LineNumber = intl->line_number;
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l32->FileName = intl->file_nameA;
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l32->Address = intl->address;
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return TRUE;
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}
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static BOOL internal_line_copy_toA64(const struct internal_line_t* intl, IMAGEHLP_LINE64* l64)
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{
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if (intl->unicode) return FALSE;
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l64->Key = intl->key;
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l64->LineNumber = intl->line_number;
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l64->FileName = intl->file_nameA;
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l64->Address = intl->address;
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return TRUE;
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}
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static BOOL internal_line_copy_toW64(const struct internal_line_t* intl, IMAGEHLP_LINEW64* l64)
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{
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if (!intl->unicode) return FALSE;
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l64->Key = intl->key;
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l64->LineNumber = intl->line_number;
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l64->FileName = intl->file_nameW;
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l64->Address = intl->address;
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return TRUE;
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}
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static BOOL internal_line_set_nameA(struct process* pcs, struct internal_line_t* intl, char* str, BOOL copy)
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{
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DWORD len;
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if (intl->unicode)
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{
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len = MultiByteToWideChar(CP_ACP, 0, str, -1, NULL, 0);
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if (!(intl->file_nameW = fetch_buffer(pcs, len * sizeof(WCHAR)))) return FALSE;
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MultiByteToWideChar(CP_ACP, 0, str, -1, intl->file_nameW, len);
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}
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else
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{
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if (copy)
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{
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len = strlen(str) + 1;
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if (!(intl->file_nameA = fetch_buffer(pcs, len))) return FALSE;
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memcpy(intl->file_nameA, str, len);
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}
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else
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intl->file_nameA = str;
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}
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return TRUE;
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}
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static BOOL internal_line_set_nameW(struct process* pcs, struct internal_line_t* intl, WCHAR* wstr, BOOL copy)
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{
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DWORD len;
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if (intl->unicode)
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{
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if (copy)
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{
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len = (lstrlenW(wstr) + 1) * sizeof(WCHAR);
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if (!(intl->file_nameW = fetch_buffer(pcs, len))) return FALSE;
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memcpy(intl->file_nameW, wstr, len);
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}
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else
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intl->file_nameW = wstr;
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}
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else
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{
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DWORD len = WideCharToMultiByte(CP_ACP, 0, wstr, -1, NULL, 0, NULL, NULL);
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if (!(intl->file_nameA = fetch_buffer(pcs, len))) return FALSE;
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WideCharToMultiByte(CP_ACP, 0, wstr, -1, intl->file_nameA, len, NULL, NULL);
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}
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return TRUE;
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}
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/******************************************************************
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* sym_fill_func_line_info
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* get_line_from_addr
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*
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* fills information about a file
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* fills source file information from an address
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*/
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static BOOL symt_fill_func_line_info(const struct module* module, const struct symt_function* func,
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DWORD64 addr, IMAGEHLP_LINE64* line)
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static BOOL get_line_from_addr(HANDLE hProcess, DWORD64 addr,
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PDWORD pdwDisplacement, struct internal_line_t* intl)
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{
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struct line_info* dli = NULL;
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BOOL found = FALSE;
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int i;
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struct module_pair pair;
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struct symt_ht* symt;
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struct symt_function* func;
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assert(func->symt.tag == SymTagFunction);
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pair.pcs = process_find_by_handle(hProcess);
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if (!pair.pcs) return FALSE;
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pair.requested = module_find_by_addr(pair.pcs, addr, DMT_UNKNOWN);
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if (!module_get_debug(&pair)) return FALSE;
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if ((symt = symt_find_nearest(pair.effective, addr)) == NULL) return FALSE;
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if (symt->symt.tag != SymTagFunction) return FALSE;
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func = (struct symt_function*)symt;
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for (i=vector_length(&func->vlines)-1; i>=0; i--)
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{
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@ -1536,28 +1646,28 @@ static BOOL symt_fill_func_line_info(const struct module* module, const struct s
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if (!dli->is_source_file)
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{
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if (found || dli->u.pc_offset > addr) continue;
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line->LineNumber = dli->line_number;
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line->Address = dli->u.pc_offset;
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line->Key = dli;
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intl->line_number = dli->line_number;
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intl->address = dli->u.pc_offset;
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intl->key = dli;
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found = TRUE;
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continue;
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}
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if (found)
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{
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BOOL ret;
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if (dbghelp_opt_native)
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{
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/* Return native file paths when using winedbg */
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line->FileName = (char*)source_get(module, dli->u.source_file);
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ret = internal_line_set_nameA(pair.pcs, intl, (char*)source_get(pair.effective, dli->u.source_file), FALSE);
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}
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else
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{
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WCHAR *dospath = wine_get_dos_file_name(source_get(module, dli->u.source_file));
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DWORD len = WideCharToMultiByte(CP_ACP, 0, dospath, -1, NULL, 0, NULL, NULL);
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line->FileName = fetch_buffer(module->process, len);
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WideCharToMultiByte(CP_ACP, 0, dospath, -1, line->FileName, len, NULL, NULL);
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WCHAR *dospath = wine_get_dos_file_name(source_get(pair.effective, dli->u.source_file));
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ret = internal_line_set_nameW(pair.pcs, intl, dospath, TRUE);
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HeapFree( GetProcessHeap(), 0, dospath );
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}
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return TRUE;
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if (ret) *pdwDisplacement = intl->address - func->address;
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return ret;
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}
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}
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return FALSE;
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@ -1622,22 +1732,6 @@ static void copy_line_64_from_32(IMAGEHLP_LINE64* l64, const IMAGEHLP_LINE* l32)
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l64->Address = l32->Address;
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}
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/******************************************************************
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* copy_line_W64_from_32 (internal)
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*
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*/
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static void copy_line_W64_from_64(struct process* pcs, IMAGEHLP_LINEW64* l64w, const IMAGEHLP_LINE64* l64)
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{
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unsigned len;
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l64w->Key = l64->Key;
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l64w->LineNumber = l64->LineNumber;
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len = MultiByteToWideChar(CP_ACP, 0, l64->FileName, -1, NULL, 0);
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if ((l64w->FileName = fetch_buffer(pcs, len * sizeof(WCHAR))))
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MultiByteToWideChar(CP_ACP, 0, l64->FileName, -1, l64w->FileName, len);
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l64w->Address = l64->Address;
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}
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/******************************************************************
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* copy_line_32_from_64 (internal)
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*
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@ -1658,13 +1752,14 @@ static void copy_line_32_from_64(IMAGEHLP_LINE* l32, const IMAGEHLP_LINE64* l64)
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BOOL WINAPI SymGetLineFromAddr(HANDLE hProcess, DWORD dwAddr,
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PDWORD pdwDisplacement, PIMAGEHLP_LINE Line)
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{
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IMAGEHLP_LINE64 il64;
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struct internal_line_t intl;
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il64.SizeOfStruct = sizeof(il64);
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if (!SymGetLineFromAddr64(hProcess, dwAddr, pdwDisplacement, &il64))
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return FALSE;
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copy_line_32_from_64(Line, &il64);
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return TRUE;
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TRACE("(%p %p)\n", hProcess, Line);
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if (Line->SizeOfStruct < sizeof(*Line)) return FALSE;
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init_internal_line(&intl, FALSE);
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if (!get_line_from_addr(hProcess, dwAddr, pdwDisplacement, &intl)) return FALSE;
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return internal_line_copy_toA32(&intl, Line);
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}
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/******************************************************************
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@ -1674,24 +1769,14 @@ BOOL WINAPI SymGetLineFromAddr(HANDLE hProcess, DWORD dwAddr,
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BOOL WINAPI SymGetLineFromAddr64(HANDLE hProcess, DWORD64 dwAddr,
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PDWORD pdwDisplacement, PIMAGEHLP_LINE64 Line)
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{
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struct module_pair pair;
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struct symt_ht* symt;
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struct internal_line_t intl;
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TRACE("%p %s %p %p\n", hProcess, wine_dbgstr_longlong(dwAddr), pdwDisplacement, Line);
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TRACE("(%p %p)\n", hProcess, Line);
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if (Line->SizeOfStruct < sizeof(*Line)) return FALSE;
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pair.pcs = process_find_by_handle(hProcess);
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if (!pair.pcs) return FALSE;
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pair.requested = module_find_by_addr(pair.pcs, dwAddr, DMT_UNKNOWN);
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if (!module_get_debug(&pair)) return FALSE;
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if ((symt = symt_find_nearest(pair.effective, dwAddr)) == NULL) return FALSE;
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if (symt->symt.tag != SymTagFunction) return FALSE;
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if (!symt_fill_func_line_info(pair.effective, (struct symt_function*)symt,
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dwAddr, Line)) return FALSE;
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*pdwDisplacement = dwAddr - Line->Address;
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return TRUE;
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init_internal_line(&intl, FALSE);
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if (!get_line_from_addr(hProcess, dwAddr, pdwDisplacement, &intl)) return FALSE;
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return internal_line_copy_toA64(&intl, Line);
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}
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/******************************************************************
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@ -1701,13 +1786,14 @@ BOOL WINAPI SymGetLineFromAddr64(HANDLE hProcess, DWORD64 dwAddr,
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BOOL WINAPI SymGetLineFromAddrW64(HANDLE hProcess, DWORD64 dwAddr,
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PDWORD pdwDisplacement, PIMAGEHLP_LINEW64 Line)
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{
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IMAGEHLP_LINE64 il64;
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struct internal_line_t intl;
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il64.SizeOfStruct = sizeof(il64);
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if (!SymGetLineFromAddr64(hProcess, dwAddr, pdwDisplacement, &il64))
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return FALSE;
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copy_line_W64_from_64(process_find_by_handle(hProcess), Line, &il64);
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return TRUE;
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TRACE("(%p %p)\n", hProcess, Line);
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if (Line->SizeOfStruct < sizeof(*Line)) return FALSE;
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init_internal_line(&intl, TRUE);
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if (!get_line_from_addr(hProcess, dwAddr, pdwDisplacement, &intl)) return FALSE;
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return internal_line_copy_toW64(&intl, Line);
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}
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/******************************************************************
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