mirror of
https://github.com/frida/tinycc
synced 2024-11-24 00:29:38 +03:00
tccpe: load dll on the fly
This commit is contained in:
parent
9fda4f4248
commit
1df662c1b0
227
libtcc.c
227
libtcc.c
@ -212,9 +212,7 @@ static int tcc_add_file_internal(TCCState *s, const char *filename, int flags);
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int tcc_output_coff(TCCState *s1, FILE *f);
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/* tccpe.c */
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int pe_load_def_file(struct TCCState *s1, int fd);
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int pe_test_res_file(void *v, int size);
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int pe_load_res_file(struct TCCState *s1, int fd);
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int pe_load_file(struct TCCState *s1, const char *filename, int fd);
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int pe_output_file(struct TCCState *s1, const char *filename);
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/* tccasm.c */
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@ -277,6 +275,7 @@ static int tcc_compile(TCCState *s1);
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void expect(const char *msg);
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void skip(int c);
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static void test_lvalue(void);
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void *resolve_sym(TCCState *s1, const char *sym);
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static inline int isid(int c)
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{
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@ -303,8 +302,6 @@ static inline int toup(int c)
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return c;
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}
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void *resolve_sym(TCCState *s1, const char *sym);
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/********************************************************/
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#ifdef TCC_TARGET_I386
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@ -352,6 +349,43 @@ static void asm_global_instr(void)
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#include "tccpe.c"
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#endif
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/********************************************************/
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#ifdef _WIN32
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char *normalize_slashes(char *path)
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{
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char *p;
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for (p = path; *p; ++p)
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if (*p == '\\')
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*p = '/';
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return path;
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}
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HMODULE tcc_module;
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/* on win32, we suppose the lib and includes are at the location of 'tcc.exe' */
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void tcc_set_lib_path_w32(TCCState *s)
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{
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char path[1024], *p;
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GetModuleFileNameA(tcc_module, path, sizeof path);
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p = tcc_basename(normalize_slashes(strlwr(path)));
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if (p - 5 > path && 0 == strncmp(p - 5, "/bin/", 5))
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p -= 5;
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else if (p > path)
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p--;
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*p = 0;
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tcc_set_lib_path(s, path);
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}
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#ifdef LIBTCC_AS_DLL
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BOOL WINAPI DllMain (HANDLE hDll, DWORD dwReason, LPVOID lpReserved)
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{
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if (DLL_PROCESS_ATTACH == dwReason)
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tcc_module = hDll;
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return TRUE;
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}
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#endif
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#endif
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/********************************************************/
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#ifdef CONFIG_TCC_STATIC
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@ -393,7 +427,7 @@ static TCCSyms tcc_syms[] = {
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{ NULL, NULL },
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};
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void *resolve_sym(TCCState *s1, const char *symbol, int type)
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void *resolve_sym(TCCState *s1, const char *symbol)
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{
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TCCSyms *p;
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p = tcc_syms;
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@ -405,8 +439,10 @@ void *resolve_sym(TCCState *s1, const char *symbol, int type)
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return NULL;
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}
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#elif !defined(_WIN32)
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#elif defined(_WIN32)
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#define dlclose FreeLibrary
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#else
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#include <dlfcn.h>
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void *resolve_sym(TCCState *s1, const char *sym)
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@ -1982,9 +2018,11 @@ static int tcc_add_file_internal(TCCState *s1, const char *filename, int flags)
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{
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const char *ext;
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ElfW(Ehdr) ehdr;
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int fd, ret;
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int fd, ret, size;
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BufferedFile *saved_file;
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ret = -1;
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/* find source file type with extension */
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ext = tcc_fileextension(filename);
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if (ext[0])
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@ -1994,104 +2032,103 @@ static int tcc_add_file_internal(TCCState *s1, const char *filename, int flags)
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saved_file = file;
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file = tcc_open(s1, filename);
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if (!file) {
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if (flags & AFF_PRINT_ERROR) {
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if (flags & AFF_PRINT_ERROR)
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error_noabort("file '%s' not found", filename);
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}
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ret = -1;
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goto fail1;
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goto the_end;
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}
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if (flags & AFF_PREPROCESS) {
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ret = tcc_preprocess(s1);
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} else if (!ext[0] || !PATHCMP(ext, "c")) {
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goto the_end;
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}
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if (!ext[0] || !PATHCMP(ext, "c")) {
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/* C file assumed */
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ret = tcc_compile(s1);
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} else
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goto the_end;
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}
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#ifdef CONFIG_TCC_ASM
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if (!strcmp(ext, "S")) {
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/* preprocessed assembler */
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ret = tcc_assemble(s1, 1);
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} else if (!strcmp(ext, "s")) {
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goto the_end;
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}
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if (!strcmp(ext, "s")) {
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/* non preprocessed assembler */
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ret = tcc_assemble(s1, 0);
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} else
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#endif
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#ifdef TCC_TARGET_PE
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if (!PATHCMP(ext, "def")) {
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ret = pe_load_def_file(s1, file->fd);
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} else
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#endif
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{
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fd = file->fd;
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/* assume executable format: auto guess file type */
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ret = read(fd, &ehdr, sizeof(ehdr));
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lseek(fd, 0, SEEK_SET);
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if (ret <= 0) {
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error_noabort("could not read header");
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goto fail;
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} else if (ret != sizeof(ehdr)) {
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goto try_load_script;
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}
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if (ehdr.e_ident[0] == ELFMAG0 &&
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ehdr.e_ident[1] == ELFMAG1 &&
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ehdr.e_ident[2] == ELFMAG2 &&
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ehdr.e_ident[3] == ELFMAG3) {
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file->line_num = 0; /* do not display line number if error */
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if (ehdr.e_type == ET_REL) {
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ret = tcc_load_object_file(s1, fd, 0);
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} else if (ehdr.e_type == ET_DYN) {
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if (s1->output_type == TCC_OUTPUT_MEMORY) {
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#ifdef TCC_TARGET_PE
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ret = -1;
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#else
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void *h;
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h = dlopen(filename, RTLD_GLOBAL | RTLD_LAZY);
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if (h)
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ret = 0;
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else
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ret = -1;
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#endif
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} else {
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ret = tcc_load_dll(s1, fd, filename,
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(flags & AFF_REFERENCED_DLL) != 0);
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}
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} else {
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error_noabort("unrecognized ELF file");
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goto fail;
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}
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} else if (memcmp((char *)&ehdr, ARMAG, 8) == 0) {
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file->line_num = 0; /* do not display line number if error */
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ret = tcc_load_archive(s1, fd);
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} else
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#ifdef TCC_TARGET_COFF
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if (*(uint16_t *)(&ehdr) == COFF_C67_MAGIC) {
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ret = tcc_load_coff(s1, fd);
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} else
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#endif
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#ifdef TCC_TARGET_PE
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if (pe_test_res_file(&ehdr, ret)) {
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ret = pe_load_res_file(s1, fd);
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} else
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#endif
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{
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/* as GNU ld, consider it is an ld script if not recognized */
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try_load_script:
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ret = tcc_load_ldscript(s1);
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if (ret < 0) {
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error_noabort("unrecognized file type");
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goto fail;
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}
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}
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goto the_end;
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}
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the_end:
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tcc_close(file);
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fail1:
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#endif
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fd = file->fd;
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/* assume executable format: auto guess file type */
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size = read(fd, &ehdr, sizeof(ehdr));
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lseek(fd, 0, SEEK_SET);
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if (size <= 0) {
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error_noabort("could not read header");
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goto the_end;
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}
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if (size == sizeof(ehdr) &&
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ehdr.e_ident[0] == ELFMAG0 &&
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ehdr.e_ident[1] == ELFMAG1 &&
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ehdr.e_ident[2] == ELFMAG2 &&
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ehdr.e_ident[3] == ELFMAG3) {
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/* do not display line number if error */
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file->line_num = 0;
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if (ehdr.e_type == ET_REL) {
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ret = tcc_load_object_file(s1, fd, 0);
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goto the_end;
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}
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#ifndef TCC_TARGET_PE
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if (ehdr.e_type == ET_DYN) {
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if (s1->output_type == TCC_OUTPUT_MEMORY) {
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void *h;
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h = dlopen(filename, RTLD_GLOBAL | RTLD_LAZY);
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if (h)
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ret = 0;
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} else {
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ret = tcc_load_dll(s1, fd, filename,
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(flags & AFF_REFERENCED_DLL) != 0);
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}
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goto the_end;
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}
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#endif
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error_noabort("unrecognized ELF file");
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goto the_end;
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}
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if (memcmp((char *)&ehdr, ARMAG, 8) == 0) {
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file->line_num = 0; /* do not display line number if error */
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ret = tcc_load_archive(s1, fd);
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goto the_end;
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}
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#ifdef TCC_TARGET_COFF
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if (*(uint16_t *)(&ehdr) == COFF_C67_MAGIC) {
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ret = tcc_load_coff(s1, fd);
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goto the_end;
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}
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#endif
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#ifdef TCC_TARGET_PE
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ret = pe_load_file(s1, filename, fd);
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#else
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/* as GNU ld, consider it is an ld script if not recognized */
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ret = tcc_load_ldscript(s1);
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#endif
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if (ret < 0)
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error_noabort("unrecognized file type");
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the_end:
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if (file)
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tcc_close(file);
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file = saved_file;
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return ret;
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fail:
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ret = -1;
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goto the_end;
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}
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int tcc_add_file(TCCState *s, const char *filename)
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@ -2136,14 +2173,14 @@ int tcc_add_library(TCCState *s, const char *libraryname)
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/* first we look for the dynamic library if not static linking */
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if (!s->static_link) {
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#ifdef TCC_TARGET_PE
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snprintf(buf, sizeof(buf), "%s.def", libraryname);
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if (pe_add_dll(s, libraryname) == 0)
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return 0;
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#else
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snprintf(buf, sizeof(buf), "lib%s.so", libraryname);
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#endif
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if (tcc_add_dll(s, buf, 0) == 0)
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return 0;
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#endif
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}
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/* then we look for the static library */
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for(i = 0; i < s->nb_library_paths; i++) {
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snprintf(buf, sizeof(buf), "%s/lib%s.a",
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@ -2225,6 +2262,10 @@ int tcc_set_output_type(TCCState *s, int output_type)
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#ifdef TCC_TARGET_PE
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snprintf(buf, sizeof(buf), "%s/lib", s->tcc_lib_path);
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tcc_add_library_path(s, buf);
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#ifdef _WIN32
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if (GetSystemDirectory(buf, sizeof buf))
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tcc_add_library_path(s, buf);
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#endif
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#endif
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return 0;
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1
tcc.h
1
tcc.h
@ -46,7 +46,6 @@
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#include <direct.h> /* getcwd */
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#define inline __inline
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#define inp next_inp
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#define dlclose FreeLibrary
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#ifdef _MSC_VER
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#define __aligned(n) __declspec(align(n))
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#endif
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2
tccelf.c
2
tccelf.c
@ -2424,6 +2424,7 @@ static int tcc_load_archive(TCCState *s1, int fd)
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return 0;
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}
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#ifndef TCC_TARGET_PE
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/* load a DLL and all referenced DLLs. 'level = 0' means that the DLL
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is referenced by the user (so it should be added as DT_NEEDED in
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the generated ELF file) */
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@ -2740,3 +2741,4 @@ static int tcc_load_ldscript(TCCState *s1)
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}
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return 0;
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}
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#endif
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143
tccpe.c
143
tccpe.c
@ -46,6 +46,19 @@
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#define TCC_IS_NATIVE
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#endif
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#ifdef _WIN32
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void dbg_printf (const char *fmt, ...)
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{
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char buffer[4000];
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va_list arg;
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int x;
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va_start(arg, fmt);
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x = vsprintf (buffer, fmt, arg);
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strcpy(buffer+x, "\n");
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OutputDebugString(buffer);
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}
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#endif
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/* ----------------------------------------------------------- */
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#ifndef IMAGE_NT_SIGNATURE
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/* ----------------------------------------------------------- */
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@ -442,29 +455,12 @@ struct pe_info {
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int imp_count;
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};
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/* ------------------------------------------------------------- */
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#define PE_NUL 0
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#define PE_DLL 1
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#define PE_GUI 2
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#define PE_EXE 3
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#define PE_RUN 4
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void error_noabort(const char *, ...);
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#ifdef _WIN32
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void dbg_printf (const char *fmt, ...)
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{
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char buffer[4000];
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va_list arg;
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int x;
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va_start(arg, fmt);
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x = vsprintf (buffer, fmt, arg);
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strcpy(buffer+x, "\n");
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OutputDebugString(buffer);
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}
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#endif
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/* --------------------------------------------*/
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ST_FN const char* get_alt_symbol(char *buffer, const char *symbol)
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@ -1355,62 +1351,55 @@ ST_FN void pe_print_sections(TCCState *s1, const char *fname)
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}
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#endif
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/* ------------------------------------------------------------- */
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ST_FN int read_mem(FILE *fp, unsigned offset, void *buffer, unsigned len)
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{
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fseek(fp, offset, 0);
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return len == fread(buffer, 1, len, fp);
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}
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/* -------------------------------------------------------------
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* This is for compiled windows resources in 'coff' format
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* as generated by 'windres.exe -O coff ...'.
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*/
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PUB_FN int pe_test_res_file(void *v, int size)
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{
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struct pe_rsrc_header *p = (struct pe_rsrc_header *)v;
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return
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size >= IMAGE_SIZEOF_FILE_HEADER + IMAGE_SIZEOF_SHORT_NAME /* = 28 */
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&& p->filehdr.Machine == 0x014C
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&& 1 == p->filehdr.NumberOfSections
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&& 0 == strcmp(p->sectionhdr.Name, ".rsrc")
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;
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}
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ST_FN int read_n(int fd, void *ptr, unsigned size)
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{
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return size == read(fd, ptr, size);
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}
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PUB_FN int pe_load_res_file(TCCState *s1, int fd)
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ST_FN int pe_load_res(TCCState *s1, FILE *fp)
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{
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struct pe_rsrc_header hdr;
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Section *rsrc_section;
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int i, ret = -1;
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BYTE *ptr;
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unsigned offs;
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lseek (fd, 0, SEEK_SET);
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if (!read_n(fd, &hdr, sizeof hdr))
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if (!read_mem(fp, 0, &hdr, sizeof hdr))
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goto quit;
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if (!pe_test_res_file(&hdr, sizeof hdr))
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if (hdr.filehdr.Machine != 0x014C
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|| hdr.filehdr.NumberOfSections != 1
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|| strcmp(hdr.sectionhdr.Name, ".rsrc") != 0)
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goto quit;
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rsrc_section = new_section(s1, ".rsrc", SHT_PROGBITS, SHF_ALLOC);
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ptr = section_ptr_add(rsrc_section, hdr.sectionhdr.SizeOfRawData);
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lseek (fd, hdr.sectionhdr.PointerToRawData, SEEK_SET);
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if (!read_n(fd, ptr, hdr.sectionhdr.SizeOfRawData))
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offs = hdr.sectionhdr.PointerToRawData;
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if (!read_mem(fp, offs, ptr, hdr.sectionhdr.SizeOfRawData))
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goto quit;
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lseek (fd, hdr.sectionhdr.PointerToRelocations, SEEK_SET);
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offs = hdr.sectionhdr.PointerToRelocations;
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for (i = 0; i < hdr.sectionhdr.NumberOfRelocations; ++i)
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{
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struct pe_rsrc_reloc rel;
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if (!read_n(fd, &rel, sizeof rel))
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if (!read_mem(fp, offs, &rel, sizeof rel))
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goto quit;
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// printf("rsrc_reloc: %x %x %x\n", rel.offset, rel.size, rel.type);
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if (rel.type != 7) /* DIR32NB */
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goto quit;
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put_elf_reloc(symtab_section, rsrc_section,
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rel.offset, R_XXX_RELATIVE, 0);
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offs += sizeof rel;
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}
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ret = 0;
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quit:
|
||||
if (ret)
|
||||
error_noabort("unrecognized resource file format");
|
||||
return ret;
|
||||
}
|
||||
|
||||
@ -1439,15 +1428,11 @@ ST_FN char *get_line(char *line, int size, FILE *fp)
|
||||
}
|
||||
|
||||
/* ------------------------------------------------------------- */
|
||||
PUB_FN int pe_load_def_file(TCCState *s1, int fd)
|
||||
ST_FN int pe_load_def(TCCState *s1, FILE *fp)
|
||||
{
|
||||
DLLReference *dllref;
|
||||
int state = 0, ret = -1;
|
||||
char line[400], dllname[80], *p;
|
||||
FILE *fp = fdopen(dup(fd), "rb");
|
||||
|
||||
if (NULL == fp)
|
||||
goto quit;
|
||||
|
||||
for (;;) {
|
||||
p = get_line(line, sizeof line, fp);
|
||||
@ -1485,13 +1470,65 @@ PUB_FN int pe_load_def_file(TCCState *s1, int fd)
|
||||
}
|
||||
ret = 0;
|
||||
quit:
|
||||
if (fp)
|
||||
fclose(fp);
|
||||
if (ret)
|
||||
error_noabort("unrecognized export definition file format");
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* ------------------------------------------------------------- */
|
||||
#define TINY_IMPDEF_GET_EXPORT_NAMES_ONLY
|
||||
#include "win32/tools/tiny_impdef.c"
|
||||
|
||||
ST_FN int pe_load_dll(TCCState *s1, const char *dllname, FILE *fp)
|
||||
{
|
||||
int i = 0;
|
||||
char *p, *q;
|
||||
p = get_export_names(fp);
|
||||
if (p) {
|
||||
DLLReference *dllref;
|
||||
dllref = tcc_mallocz(sizeof(DLLReference) + strlen(dllname));
|
||||
strcpy(dllref->name, dllname);
|
||||
dynarray_add((void ***) &s1->loaded_dlls, &s1->nb_loaded_dlls, dllref);
|
||||
for (q = p, i = 0; *q; ++i) {
|
||||
add_elf_sym(s1->dynsymtab_section,
|
||||
s1->nb_loaded_dlls, 0,
|
||||
ELFW_ST_INFO(STB_GLOBAL, STT_FUNC), 0,
|
||||
text_section->sh_num, q);
|
||||
q += 1 + strlen(q);
|
||||
}
|
||||
tcc_free(p);
|
||||
}
|
||||
return i ? 0 : -1;
|
||||
}
|
||||
|
||||
/* ------------------------------------------------------------- */
|
||||
PUB_FN int pe_load_file(struct TCCState *s1, const char *filename, int fd)
|
||||
{
|
||||
FILE *fp = fdopen(dup(fd), "rb");
|
||||
int ret = -1;
|
||||
char buf[10];
|
||||
if (fp) {
|
||||
if (0 == strcmp(tcc_fileextension(filename), ".def"))
|
||||
ret = pe_load_def(s1, fp);
|
||||
else if (pe_load_res(s1, fp) == 0)
|
||||
ret = 0;
|
||||
else if (read_mem(fp, 0, buf, sizeof buf) && 0 == strncmp(buf, "MZ", 2))
|
||||
ret = pe_load_dll(s1, filename, fp);
|
||||
fclose(fp);
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
int pe_add_dll(struct TCCState *s, const char *libraryname)
|
||||
{
|
||||
char buf[MAX_PATH];
|
||||
snprintf(buf, sizeof(buf), "%s.def", libraryname);
|
||||
if (tcc_add_dll(s, buf, 0) == 0)
|
||||
return 0;
|
||||
snprintf(buf, sizeof(buf), "%s.dll", libraryname);
|
||||
if (tcc_add_dll(s, buf, 0) == 0)
|
||||
return 0;
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* ------------------------------------------------------------- */
|
||||
#ifdef TCC_TARGET_X86_64
|
||||
#define PE_STDSYM(n,s) n
|
||||
|
@ -20,100 +20,19 @@
|
||||
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||
*/
|
||||
|
||||
#ifndef TINY_IMPDEF_GET_EXPORT_NAMES_ONLY
|
||||
|
||||
#define WIN32_LEAN_AND_MEAN
|
||||
#include <windows.h>
|
||||
#include <stdio.h>
|
||||
#include <malloc.h>
|
||||
#include "../../config.h"
|
||||
|
||||
int read_mem(FILE *fp, unsigned offset, void *buffer, unsigned len)
|
||||
{
|
||||
fseek(fp, offset, 0);
|
||||
return len == fread(buffer, 1, len, fp);
|
||||
}
|
||||
char *get_export_names(FILE *fp);
|
||||
#define tcc_free free
|
||||
#define tcc_realloc realloc
|
||||
|
||||
char *get_export_names(FILE *fp)
|
||||
{
|
||||
int l, i, n, n0;
|
||||
char *p;
|
||||
|
||||
IMAGE_SECTION_HEADER ish;
|
||||
IMAGE_EXPORT_DIRECTORY ied;
|
||||
IMAGE_DOS_HEADER dh;
|
||||
IMAGE_FILE_HEADER ih;
|
||||
DWORD sig, ref, addr, ptr, namep;
|
||||
#ifdef TCC_TARGET_X86_64
|
||||
IMAGE_OPTIONAL_HEADER64 oh;
|
||||
const int MACHINE = 0x8664;
|
||||
#else
|
||||
IMAGE_OPTIONAL_HEADER32 oh;
|
||||
const int MACHINE = 0x014C;
|
||||
#endif
|
||||
int pef_hdroffset, opt_hdroffset, sec_hdroffset;
|
||||
|
||||
n = n0 = 0;
|
||||
p = NULL;
|
||||
|
||||
if (!read_mem(fp, 0, &dh, sizeof dh))
|
||||
goto the_end;
|
||||
if (!read_mem(fp, dh.e_lfanew, &sig, sizeof sig))
|
||||
goto the_end;
|
||||
if (sig != 0x00004550)
|
||||
goto the_end;
|
||||
pef_hdroffset = dh.e_lfanew + sizeof sig;
|
||||
if (!read_mem(fp, pef_hdroffset, &ih, sizeof ih))
|
||||
goto the_end;
|
||||
if (MACHINE != ih.Machine)
|
||||
goto the_end;
|
||||
opt_hdroffset = pef_hdroffset + sizeof ih;
|
||||
sec_hdroffset = opt_hdroffset + sizeof oh;
|
||||
if (!read_mem(fp, opt_hdroffset, &oh, sizeof oh))
|
||||
goto the_end;
|
||||
|
||||
if (IMAGE_DIRECTORY_ENTRY_EXPORT >= oh.NumberOfRvaAndSizes)
|
||||
goto the_end;
|
||||
|
||||
addr = oh.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress;
|
||||
//printf("addr: %08x\n", addr);
|
||||
for (i = 0; i < ih.NumberOfSections; ++i) {
|
||||
if (!read_mem(fp, sec_hdroffset + i * sizeof ish, &ish, sizeof ish))
|
||||
goto the_end;
|
||||
//printf("vaddr: %08x\n", ish.VirtualAddress);
|
||||
if (addr >= ish.VirtualAddress && addr < ish.VirtualAddress + ish.SizeOfRawData)
|
||||
goto found;
|
||||
}
|
||||
goto the_end;
|
||||
|
||||
found:
|
||||
ref = ish.VirtualAddress - ish.PointerToRawData;
|
||||
if (!read_mem(fp, addr - ref, &ied, sizeof ied))
|
||||
goto the_end;
|
||||
|
||||
namep = ied.AddressOfNames - ref;
|
||||
for (i = 0; i < ied.NumberOfNames; ++i) {
|
||||
if (!read_mem(fp, namep, &ptr, sizeof ptr))
|
||||
goto the_end;
|
||||
namep += sizeof ptr;
|
||||
for (l = 0;;) {
|
||||
if (n+1 >= n0)
|
||||
p = realloc(p, n0 = n0 ? n0 * 2 : 256);
|
||||
if (!read_mem(fp, ptr - ref + l, p + n, 1) || ++l >= 80) {
|
||||
free(p), p = NULL;
|
||||
goto the_end;
|
||||
}
|
||||
if (p[n++] == 0)
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (p)
|
||||
p[n] = 0;
|
||||
the_end:
|
||||
return p;
|
||||
}
|
||||
|
||||
/* -------------------------------------------------------------- */
|
||||
/* extract the basename of a file */
|
||||
|
||||
static char *file_basename(const char *name)
|
||||
{
|
||||
const char *p = strchr(name, 0);
|
||||
@ -125,8 +44,6 @@ static char *file_basename(const char *name)
|
||||
return (char*)p;
|
||||
}
|
||||
|
||||
/* -------------------------------------------------------------- */
|
||||
|
||||
int main(int argc, char **argv)
|
||||
{
|
||||
int ret, v, i;
|
||||
@ -232,3 +149,93 @@ the_end:
|
||||
}
|
||||
|
||||
/* -------------------------------------------------------------- */
|
||||
|
||||
int read_mem(FILE *fp, unsigned offset, void *buffer, unsigned len)
|
||||
{
|
||||
fseek(fp, offset, 0);
|
||||
return len == fread(buffer, 1, len, fp);
|
||||
}
|
||||
|
||||
/* -------------------------------------------------------------- */
|
||||
#endif
|
||||
|
||||
char *get_export_names(FILE *fp)
|
||||
{
|
||||
int l, i, n, n0;
|
||||
char *p;
|
||||
|
||||
IMAGE_SECTION_HEADER ish;
|
||||
IMAGE_EXPORT_DIRECTORY ied;
|
||||
IMAGE_DOS_HEADER dh;
|
||||
IMAGE_FILE_HEADER ih;
|
||||
DWORD sig, ref, addr, ptr, namep;
|
||||
#ifdef TCC_TARGET_X86_64
|
||||
IMAGE_OPTIONAL_HEADER64 oh;
|
||||
const int MACHINE = 0x8664;
|
||||
#else
|
||||
IMAGE_OPTIONAL_HEADER32 oh;
|
||||
const int MACHINE = 0x014C;
|
||||
#endif
|
||||
int pef_hdroffset, opt_hdroffset, sec_hdroffset;
|
||||
|
||||
n = n0 = 0;
|
||||
p = NULL;
|
||||
|
||||
if (!read_mem(fp, 0, &dh, sizeof dh))
|
||||
goto the_end;
|
||||
if (!read_mem(fp, dh.e_lfanew, &sig, sizeof sig))
|
||||
goto the_end;
|
||||
if (sig != 0x00004550)
|
||||
goto the_end;
|
||||
pef_hdroffset = dh.e_lfanew + sizeof sig;
|
||||
if (!read_mem(fp, pef_hdroffset, &ih, sizeof ih))
|
||||
goto the_end;
|
||||
if (MACHINE != ih.Machine)
|
||||
goto the_end;
|
||||
opt_hdroffset = pef_hdroffset + sizeof ih;
|
||||
sec_hdroffset = opt_hdroffset + sizeof oh;
|
||||
if (!read_mem(fp, opt_hdroffset, &oh, sizeof oh))
|
||||
goto the_end;
|
||||
|
||||
if (IMAGE_DIRECTORY_ENTRY_EXPORT >= oh.NumberOfRvaAndSizes)
|
||||
goto the_end;
|
||||
|
||||
addr = oh.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress;
|
||||
//printf("addr: %08x\n", addr);
|
||||
for (i = 0; i < ih.NumberOfSections; ++i) {
|
||||
if (!read_mem(fp, sec_hdroffset + i * sizeof ish, &ish, sizeof ish))
|
||||
goto the_end;
|
||||
//printf("vaddr: %08x\n", ish.VirtualAddress);
|
||||
if (addr >= ish.VirtualAddress && addr < ish.VirtualAddress + ish.SizeOfRawData)
|
||||
goto found;
|
||||
}
|
||||
goto the_end;
|
||||
|
||||
found:
|
||||
ref = ish.VirtualAddress - ish.PointerToRawData;
|
||||
if (!read_mem(fp, addr - ref, &ied, sizeof ied))
|
||||
goto the_end;
|
||||
|
||||
namep = ied.AddressOfNames - ref;
|
||||
for (i = 0; i < ied.NumberOfNames; ++i) {
|
||||
if (!read_mem(fp, namep, &ptr, sizeof ptr))
|
||||
goto the_end;
|
||||
namep += sizeof ptr;
|
||||
for (l = 0;;) {
|
||||
if (n+1 >= n0)
|
||||
p = tcc_realloc(p, n0 = n0 ? n0 * 2 : 256);
|
||||
if (!read_mem(fp, ptr - ref + l, p + n, 1) || ++l >= 80) {
|
||||
tcc_free(p), p = NULL;
|
||||
goto the_end;
|
||||
}
|
||||
if (p[n++] == 0)
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (p)
|
||||
p[n] = 0;
|
||||
the_end:
|
||||
return p;
|
||||
}
|
||||
|
||||
/* -------------------------------------------------------------- */
|
||||
|
Loading…
Reference in New Issue
Block a user