void dynarray_reset(void *pp, int *n) {
void **p;
for (p = *(void***) pp; *n; ++p, --*n) {
if (*p) tcc_free(*p);
}
tcc_free(*(void**) pp);
*(void**)pp = NULL;
}
int pe_output_file(TCCState *s1, const char *filename) {
int ret;
struct pe_info pe;
int i;
memset(&pe, 0, sizeof pe);
pe.filename = filename;
pe.s1 = s1;
// Generate relocation information by default for Sanos.
if (s1->imagebase == 0xFFFFFFFF) {
pe.reloc = new_section(s1, ".reloc", SHT_PROGBITS, 0);
pe.imagebase = pe.type == PE_DLL ? 0x10000000 : 0x00400000;
} else {
pe.imagebase = s1->imagebase;
}
pe_add_runtime_ex(s1, &pe);
relocate_common_syms(); // Assign bss adresses
tcc_add_linker_symbols(s1);
if (!s1->nofll) pe_eliminate_unused_sections(&pe);
ret = pe_check_symbols(&pe);
if (ret != 0) return ret;
pe_assign_addresses(&pe);
relocate_syms(s1, 0);
for (i = 1; i < s1->nb_sections; ++i) {
Section *s = s1->sections[i];
if (s->reloc) {
relocate_section(s1, s);
pe_relocate_rva(&pe, s);
}
}
if (s1->nb_errors) {
ret = 1;
} else {
ret = pe_write(&pe);
}
if (s1->mapfile) pe_print_sections(s1, s1->mapfile);
tcc_free(pe.sec_info);
return ret;
}
PUB_FN int pe_output_file(TCCState * s1, const char *filename)
{
int ret;
struct pe_info pe;
int i;
memset(&pe, 0, sizeof pe);
pe.filename = filename;
pe.s1 = s1;
pe_add_runtime_ex(s1, &pe);
relocate_common_syms(); /* assign bss adresses */
tcc_add_linker_symbols(s1);
ret = pe_check_symbols(&pe);
if (0 == ret) {
if (PE_DLL == pe.type) {
pe.reloc = new_section(pe.s1, ".reloc", SHT_PROGBITS, 0);
pe.imagebase = 0x10000000;
} else {
pe.imagebase = 0x00400000;
}
pe_assign_addresses(&pe);
relocate_syms(s1, 0);
for (i = 1; i < s1->nb_sections; ++i) {
Section *s = s1->sections[i];
if (s->reloc) {
relocate_section(s1, s);
pe_relocate_rva(&pe, s);
}
}
if (s1->nb_errors)
ret = 1;
else
ret = pe_write(&pe);
tcc_free(pe.sec_info);
}
#ifdef PE_PRINT_SECTIONS
pe_print_sections(s1, "tcc.log");
#endif
return ret;
}
static int pe_assign_addresses(struct pe_info *pe) {
int i, k, o, c;
DWORD addr;
int *section_order;
struct section_info *si;
struct section_info *merged_text;
struct section_info *merged_data;
Section *s;
// pe->thunk = new_section(pe->s1, ".iedat", SHT_PROGBITS, SHF_ALLOC);
section_order = tcc_malloc(pe->s1->nb_sections * sizeof (int));
for (o = k = 0 ; k < sec_last; ++k) {
for (i = 1; i < pe->s1->nb_sections; ++i) {
s = pe->s1->sections[i];
if (k == pe_section_class(s)) {
s->sh_addr = pe->imagebase;
section_order[o++] = i;
}
}
}
pe->sec_info = tcc_mallocz(o * sizeof (struct section_info));
addr = pe->imagebase + 1;
merged_text = NULL;
merged_data = NULL;
for (i = 0; i < o; ++i) {
k = section_order[i];
s = pe->s1->sections[k];
c = pe_section_class(s);
si = &pe->sec_info[pe->sec_count];
#ifdef PE_MERGE_DATA
if (c == sec_data && merged_data == NULL) {
merged_data = si;
}
if (c == sec_bss && merged_data != NULL) {
// Append .bss to .data
s->sh_addr = addr = ((addr - 1) | 15) + 1;
addr += s->data_offset;
merged_data->sh_size = addr - merged_data->sh_addr;
merged_data->last->next = s;
merged_data->last = s;
continue;
}
#endif
if (c == sec_text) {
if (s->unused) continue;
if (merged_text) {
merged_text->sh_size = align(merged_text->sh_size, s->sh_addralign);
s->sh_addr = merged_text->sh_addr + merged_text->sh_size;
merged_text->sh_size += s->data_offset;
addr = merged_text->sh_addr + merged_text->sh_size;
merged_text->last->next = s;
merged_text->last = s;
continue;
} else {
merged_text = si;
}
}
strcpy(si->name, c == sec_text ? ".text" : s->name);
si->cls = c;
si->ord = k;
si->sh_addr = s->sh_addr = addr = pe_virtual_align(addr);
si->sh_flags = s->sh_flags;
si->first = si->last = s;
if (c == sec_data && pe->thunk == NULL) {
pe->thunk = s;
}
if (s == pe->thunk) {
pe_build_imports(pe);
pe_build_exports(pe);
}
if (c == sec_reloc) {
pe_build_reloc(pe);
}
if (s->data_offset) {
si->sh_size = s->data_offset;
addr += s->data_offset;
pe->sec_count++;
}
}
tcc_free(section_order);
return 0;
}
static void pe_build_exports(struct pe_info *pe) {
Elf32_Sym *sym;
int sym_index, sym_end;
DWORD rva_base, func_o, name_o, ord_o, str_o;
struct pe_export_header *hdr;
int sym_count, n, ord, *sorted, *sp;
FILE *op;
char buf[260];
const char *dllname;
const char *name;
rva_base = pe->thunk->sh_addr - pe->imagebase;
sym_count = 0;
n = 1;
sorted = NULL;
op = NULL;
sym_end = symtab_section->data_offset / sizeof(Elf32_Sym);
for (sym_index = 1; sym_index < sym_end; ++sym_index) {
sym = (Elf32_Sym *) symtab_section->data + sym_index;
name = symtab_section->link->data + sym->st_name;
// Only export symbols from actually written sections
if ((sym->st_other & 1) && pe->s1->sections[sym->st_shndx]->sh_addr) {
dynarray_add((void ***) &sorted, &sym_count, (void *) n);
dynarray_add((void ***) &sorted, &sym_count, (void *) name);
}
++n;
}
if (sym_count == 0) return;
sym_count /= 2;
qsort(sorted, sym_count, 2 * sizeof(sorted[0]), sym_cmp);
pe_align_section(pe->thunk, 16);
dllname = tcc_basename(pe->filename);
pe->exp_offs = pe->thunk->data_offset;
func_o = pe->exp_offs + sizeof(struct pe_export_header);
name_o = func_o + sym_count * sizeof(DWORD);
ord_o = name_o + sym_count * sizeof(DWORD);
str_o = ord_o + sym_count * sizeof(WORD);
hdr = section_ptr_add(pe->thunk, str_o - pe->exp_offs);
hdr->Characteristics = 0;
hdr->Base = 1;
hdr->NumberOfFunctions = sym_count;
hdr->NumberOfNames = sym_count;
hdr->AddressOfFunctions = func_o + rva_base;
hdr->AddressOfNames = name_o + rva_base;
hdr->AddressOfNameOrdinals = ord_o + rva_base;
hdr->Name = str_o + rva_base;
put_elf_str(pe->thunk, dllname);
if (pe->def != NULL) {
// Write exports to .def file
op = fopen(pe->def, "w");
if (op == NULL) {
error_noabort("could not create '%s': %s", pe->def, strerror(errno));
} else {
fprintf(op, "LIBRARY %s\n\nEXPORTS\n", dllname);
if (verbose) {
printf("<- %s (%d symbols)\n", buf, sym_count);
}
}
}
for (sp = sorted, ord = 0; ord < sym_count; ++ord, sp += 2) {
sym_index = sp[0];
name = (const char *) sp[1];
// Insert actual address later in pe_relocate_rva
put_elf_reloc(symtab_section, pe->thunk, func_o, R_386_RELATIVE, sym_index);
*(DWORD *)(pe->thunk->data + name_o) = pe->thunk->data_offset + rva_base;
*(WORD *)(pe->thunk->data + ord_o) = ord;
put_elf_str(pe->thunk, name);
func_o += sizeof(DWORD);
name_o += sizeof(DWORD);
ord_o += sizeof(WORD);
if (op) fprintf(op, "%s@%d\n", name, ord);
}
pe->exp_size = pe->thunk->data_offset - pe->exp_offs;
tcc_free(sorted);
if (op) fclose(op);
}
static int pe_write(struct pe_info *pe) {
int i;
int fd;
FILE *op;
FILE *stubfile;
char *stub;
int stub_size;
DWORD file_offset, r;
Section *s;
if (pe->stub) {
stubfile = fopen(pe->stub, "rb");
if (stubfile == NULL) {
error_noabort("could not read '%s': %s", pe->stub, strerror(errno));
return 1;
}
fseek(stubfile, 0, SEEK_END);
stub_size = ftell(stubfile);
fseek(stubfile, 0, SEEK_SET);
if (stub_size < sizeof(IMAGE_DOS_HEADER)) {
error_noabort("invalid stub (%d bytes): %s", stub_size, pe->stub);
return 1;
}
stub = tcc_malloc(stub_size);
if (fread(stub, 1, stub_size, stubfile) != stub_size) {
error_noabort("error reading stub '%s': %s", pe->stub, strerror(errno));
return 1;
}
fclose(stubfile);
} else {
stub_size = DOSSTUB_SIZE + sizeof(IMAGE_DOS_HEADER);
stub = tcc_malloc(stub_size);
memcpy(stub, &pe_doshdr, sizeof(IMAGE_DOS_HEADER));
memcpy(stub + sizeof(IMAGE_DOS_HEADER), pe_dosstub, DOSSTUB_SIZE);
}
((PIMAGE_DOS_HEADER) stub)->e_lfanew = stub_size;
fd = open(pe->filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, 0777);
if (fd < 0) {
error_noabort("could not write '%s': %s", pe->filename, strerror(errno));
return 1;
}
op = fdopen(fd, "wb");
pe->sizeofheaders =
pe_file_align(pe,
stub_size +
sizeof(DWORD) +
sizeof(IMAGE_FILE_HEADER) +
sizeof(IMAGE_OPTIONAL_HEADER) +
pe->sec_count * sizeof (IMAGE_SECTION_HEADER));
file_offset = pe->sizeofheaders;
pe_fpad(op, file_offset, 0);
if (verbose == 2) {
printf("------------------------------------\n virt file size ord section" "\n");
}
for (i = 0; i < pe->sec_count; ++i) {
struct section_info *si = pe->sec_info + i;
const char *sh_name = si->name;
unsigned long addr = si->sh_addr - pe->imagebase;
unsigned long size = si->sh_size;
IMAGE_SECTION_HEADER *psh = &si->ish;
if (verbose == 2) {
printf("%6lx %6lx %6lx %4d %s\n", addr, file_offset, size, si->ord, sh_name);
}
switch (si->cls) {
case sec_text:
pe_opthdr.BaseOfCode = addr;
pe_opthdr.SizeOfCode += size;
pe_opthdr.AddressOfEntryPoint = ((Elf32_Sym *) symtab_section->data)[pe->start_sym_index].st_value - pe->imagebase;
break;
case sec_data:
pe_opthdr.BaseOfData = addr;
pe_opthdr.SizeOfInitializedData += size;
break;
case sec_bss:
pe_opthdr.SizeOfUninitializedData += size;
break;
case sec_reloc:
pe_set_datadir(IMAGE_DIRECTORY_ENTRY_BASERELOC, addr, size);
break;
case sec_rsrc:
pe_set_datadir(IMAGE_DIRECTORY_ENTRY_RESOURCE, addr, size);
break;
case sec_stab:
break;
}
if (pe->thunk == pe->s1->sections[si->ord]) {
if (pe->imp_size) {
pe_set_datadir(IMAGE_DIRECTORY_ENTRY_IMPORT, pe->imp_offs + addr, pe->imp_size);
pe_set_datadir(IMAGE_DIRECTORY_ENTRY_IAT, pe->iat_offs + addr, pe->iat_size);
}
if (pe->exp_size) {
pe_set_datadir(IMAGE_DIRECTORY_ENTRY_EXPORT, pe->exp_offs + addr, pe->exp_size);
}
}
strcpy((char *) psh->Name, sh_name);
psh->Characteristics = pe_sec_flags[si->cls];
psh->VirtualAddress = addr;
psh->Misc.VirtualSize = size;
pe_opthdr.SizeOfImage = umax(pe_virtual_align(size + addr), pe_opthdr.SizeOfImage);
if (si->sh_size) {
psh->PointerToRawData = r = file_offset;
for (s = si->first; s; s = s->next) {
if (s->sh_type != SHT_NOBITS) {
file_offset = align(file_offset, s->sh_addralign);
pe_fpad(op, file_offset, si->cls == sec_text ? 0x90 : 0x00);
fwrite(s->data, 1, s->data_offset, op);
file_offset += s->data_offset;
}
}
file_offset = pe_file_align(pe, file_offset);
psh->SizeOfRawData = file_offset - r;
pe_fpad(op, file_offset, 0);
}
}
pe_filehdr.TimeDateStamp = time(NULL);
pe_filehdr.NumberOfSections = pe->sec_count;
pe_filehdr.Characteristics = do_debug ? 0x0102 : 0x030E;
pe_opthdr.SizeOfHeaders = pe->sizeofheaders;
pe_opthdr.ImageBase = pe->imagebase;
pe_opthdr.FileAlignment = pe->filealign;
if (pe->type == PE_DLL) {
pe_filehdr.Characteristics = do_debug ? 0x2102 : 0x230E;
} else if (pe->type != PE_GUI) {
pe_opthdr.Subsystem = 3;
}
if (!pe->reloc) pe_filehdr.Characteristics |= 1;
if (pe->s1->noshare) pe_filehdr.Characteristics |= 0x4000;
fseek(op, 0, SEEK_SET);
fwrite(stub, 1, stub_size, op);
fwrite(&pe_ntsig, 1, sizeof pe_ntsig, op);
fwrite(&pe_filehdr, 1, sizeof pe_filehdr, op);
fwrite(&pe_opthdr, 1, sizeof pe_opthdr, op);
for (i = 0; i < pe->sec_count; ++i) {
fwrite(&pe->sec_info[i].ish, 1, sizeof(IMAGE_SECTION_HEADER), op);
}
fclose(op);
if (verbose == 2) {
printf("------------------------------------\n");
}
if (verbose) {
printf("<- %s (%lu bytes)\n", pe->filename, file_offset);
}
tcc_free(stub);
return 0;
}
char *get_export_names(struct TCCState *tcc_state, int fd)
{
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;
#else
IMAGE_OPTIONAL_HEADER32 oh;
#endif
int pef_hdroffset, opt_hdroffset, sec_hdroffset;
n = n0 = 0;
p = NULL;
if (!read_mem(fd, 0, &dh, sizeof dh))
goto the_end;
if (!read_mem(fd, 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(fd, pef_hdroffset, &ih, sizeof ih))
goto the_end;
if (IMAGE_FILE_MACHINE != ih.Machine)
goto the_end;
opt_hdroffset = pef_hdroffset + sizeof ih;
sec_hdroffset = opt_hdroffset + sizeof oh;
if (!read_mem(fd, 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(fd, 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(fd, addr - ref, &ied, sizeof ied))
goto the_end;
namep = ied.AddressOfNames - ref;
for (i = 0; i < ied.NumberOfNames; ++i) {
if (!read_mem(fd, namep, &ptr, sizeof ptr))
goto the_end;
namep += sizeof ptr;
for (l = 0;;) {
if (n+1 >= n0)
p = tcc_realloc(tcc_state, p, n0 = n0 ? n0 * 2 : 256);
if (!read_mem(fd, ptr - ref + l++, p + n, 1)) {
tcc_free(tcc_state, p), p = NULL;
goto the_end;
}
if (p[n++] == 0)
break;
}
}
if (p)
p[n] = 0;
the_end:
return p;
}
ST_FUNC int tcc_output_coff(TCCState *s1, FILE *f)
{
Section *tcc_sect;
SCNHDR *coff_sec;
int file_pointer;
char *Coff_str_table, *pCoff_str_table;
int CoffTextSectionNo, coff_nb_syms;
FILHDR file_hdr; /* FILE HEADER STRUCTURE */
Section *stext, *sdata, *sbss;
int i, NSectionsToOutput = 0;
Coff_str_table = pCoff_str_table = NULL;
stext = FindSection(s1, ".text");
sdata = FindSection(s1, ".data");
sbss = FindSection(s1, ".bss");
nb_syms = symtab_section->data_offset / sizeof(Elf32_Sym);
coff_nb_syms = FindCoffSymbolIndex("XXXXXXXXXX1");
file_hdr.f_magic = COFF_C67_MAGIC; /* magic number */
file_hdr.f_timdat = 0; /* time & date stamp */
file_hdr.f_opthdr = sizeof(AOUTHDR); /* sizeof(optional hdr) */
file_hdr.f_flags = 0x1143; /* flags (copied from what code composer does) */
file_hdr.f_TargetID = 0x99; /* for C6x = 0x0099 */
o_filehdr.magic = 0x0108; /* see magic.h */
o_filehdr.vstamp = 0x0190; /* version stamp */
o_filehdr.tsize = stext->data_offset; /* text size in bytes, padded to FW bdry */
o_filehdr.dsize = sdata->data_offset; /* initialized data " " */
o_filehdr.bsize = sbss->data_offset; /* uninitialized data " " */
o_filehdr.entrypt = C67_main_entry_point; /* entry pt. */
o_filehdr.text_start = stext->sh_addr; /* base of text used for this file */
o_filehdr.data_start = sdata->sh_addr; /* base of data used for this file */
// create all the section headers
file_pointer = FILHSZ + sizeof(AOUTHDR);
CoffTextSectionNo = -1;
for (i = 1; i < s1->nb_sections; i++) {
coff_sec = §ion_header[i];
tcc_sect = s1->sections[i];
if (OutputTheSection(tcc_sect)) {
NSectionsToOutput++;
if (CoffTextSectionNo == -1 && tcc_sect == stext)
CoffTextSectionNo = NSectionsToOutput; // rem which coff sect number the .text sect is
strcpy(coff_sec->s_name, tcc_sect->name); /* section name */
coff_sec->s_paddr = tcc_sect->sh_addr; /* physical address */
coff_sec->s_vaddr = tcc_sect->sh_addr; /* virtual address */
coff_sec->s_size = tcc_sect->data_offset; /* section size */
coff_sec->s_scnptr = 0; /* file ptr to raw data for section */
coff_sec->s_relptr = 0; /* file ptr to relocation */
coff_sec->s_lnnoptr = 0; /* file ptr to line numbers */
coff_sec->s_nreloc = 0; /* number of relocation entries */
coff_sec->s_flags = GetCoffFlags(coff_sec->s_name); /* flags */
coff_sec->s_reserved = 0; /* reserved byte */
coff_sec->s_page = 0; /* memory page id */
file_pointer += sizeof(SCNHDR);
}
}
file_hdr.f_nscns = NSectionsToOutput; /* number of sections */
// now loop through and determine file pointer locations
// for the raw data
for (i = 1; i < s1->nb_sections; i++) {
coff_sec = §ion_header[i];
tcc_sect = s1->sections[i];
if (OutputTheSection(tcc_sect)) {
// put raw data
coff_sec->s_scnptr = file_pointer; /* file ptr to raw data for section */
file_pointer += coff_sec->s_size;
}
}
// now loop through and determine file pointer locations
// for the relocation data
for (i = 1; i < s1->nb_sections; i++) {
coff_sec = §ion_header[i];
tcc_sect = s1->sections[i];
if (OutputTheSection(tcc_sect)) {
// put relocations data
if (coff_sec->s_nreloc > 0) {
coff_sec->s_relptr = file_pointer; /* file ptr to relocation */
file_pointer += coff_sec->s_nreloc * sizeof(struct reloc);
}
}
}
// now loop through and determine file pointer locations
// for the line number data
for (i = 1; i < s1->nb_sections; i++) {
coff_sec = §ion_header[i];
tcc_sect = s1->sections[i];
coff_sec->s_nlnno = 0;
coff_sec->s_lnnoptr = 0;
if (s1->do_debug && tcc_sect == stext) {
// count how many line nos data
// also find association between source file name and function
// so we can sort the symbol table
Stab_Sym *sym, *sym_end;
char func_name[MAX_FUNC_NAME_LENGTH],
last_func_name[MAX_FUNC_NAME_LENGTH];
unsigned long func_addr, last_pc, pc;
const char *incl_files[INCLUDE_STACK_SIZE];
int incl_index, len, last_line_num;
const char *str, *p;
coff_sec->s_lnnoptr = file_pointer; /* file ptr to linno */
func_name[0] = '\0';
func_addr = 0;
incl_index = 0;
last_func_name[0] = '\0';
last_pc = 0xffffffff;
last_line_num = 1;
sym = (Stab_Sym *) stab_section->data + 1;
sym_end =
(Stab_Sym *) (stab_section->data +
stab_section->data_offset);
nFuncs = 0;
while (sym < sym_end) {
switch (sym->n_type) {
/* function start or end */
case N_FUN:
if (sym->n_strx == 0) {
// end of function
coff_sec->s_nlnno++;
file_pointer += LINESZ;
pc = sym->n_value + func_addr;
func_name[0] = '\0';
func_addr = 0;
EndAddress[nFuncs] = pc;
FuncEntries[nFuncs] =
(file_pointer -
LineNoFilePtr[nFuncs]) / LINESZ - 1;
LastLineNo[nFuncs++] = last_line_num + 1;
} else {
// beginning of function
LineNoFilePtr[nFuncs] = file_pointer;
coff_sec->s_nlnno++;
file_pointer += LINESZ;
str =
(const char *) stabstr_section->data +
sym->n_strx;
p = strchr(str, ':');
if (!p) {
pstrcpy(func_name, sizeof(func_name), str);
pstrcpy(Func[nFuncs], sizeof(func_name), str);
} else {
len = p - str;
if (len > sizeof(func_name) - 1)
len = sizeof(func_name) - 1;
memcpy(func_name, str, len);
memcpy(Func[nFuncs], str, len);
func_name[len] = '\0';
}
// save the file that it came in so we can sort later
pstrcpy(AssociatedFile[nFuncs], sizeof(func_name),
incl_files[incl_index - 1]);
func_addr = sym->n_value;
}
break;
/* line number info */
case N_SLINE:
pc = sym->n_value + func_addr;
last_pc = pc;
last_line_num = sym->n_desc;
/* XXX: slow! */
strcpy(last_func_name, func_name);
coff_sec->s_nlnno++;
file_pointer += LINESZ;
break;
/* include files */
case N_BINCL:
str =
(const char *) stabstr_section->data + sym->n_strx;
add_incl:
if (incl_index < INCLUDE_STACK_SIZE) {
incl_files[incl_index++] = str;
}
break;
case N_EINCL:
if (incl_index > 1)
incl_index--;
break;
case N_SO:
if (sym->n_strx == 0) {
incl_index = 0; /* end of translation unit */
} else {
str =
(const char *) stabstr_section->data +
sym->n_strx;
/* do not add path */
len = strlen(str);
if (len > 0 && str[len - 1] != '/')
goto add_incl;
}
break;
}
sym++;
}
}
}
file_hdr.f_symptr = file_pointer; /* file pointer to symtab */
if (s1->do_debug)
file_hdr.f_nsyms = coff_nb_syms; /* number of symtab entries */
else
file_hdr.f_nsyms = 0;
file_pointer += file_hdr.f_nsyms * SYMNMLEN;
// OK now we are all set to write the file
fwrite(&file_hdr, FILHSZ, 1, f);
fwrite(&o_filehdr, sizeof(o_filehdr), 1, f);
// write section headers
for (i = 1; i < s1->nb_sections; i++) {
coff_sec = §ion_header[i];
tcc_sect = s1->sections[i];
if (OutputTheSection(tcc_sect)) {
fwrite(coff_sec, sizeof(SCNHDR), 1, f);
}
}
// write raw data
for (i = 1; i < s1->nb_sections; i++) {
coff_sec = §ion_header[i];
tcc_sect = s1->sections[i];
if (OutputTheSection(tcc_sect)) {
fwrite(tcc_sect->data, tcc_sect->data_offset, 1, f);
}
}
// write relocation data
for (i = 1; i < s1->nb_sections; i++) {
coff_sec = §ion_header[i];
tcc_sect = s1->sections[i];
if (OutputTheSection(tcc_sect)) {
// put relocations data
if (coff_sec->s_nreloc > 0) {
fwrite(tcc_sect->reloc,
coff_sec->s_nreloc * sizeof(struct reloc), 1, f);
}
}
}
// group the symbols in order of filename, func1, func2, etc
// finally global symbols
if (s1->do_debug)
SortSymbolTable();
// write line no data
for (i = 1; i < s1->nb_sections; i++) {
coff_sec = §ion_header[i];
tcc_sect = s1->sections[i];
if (s1->do_debug && tcc_sect == stext) {
// count how many line nos data
Stab_Sym *sym, *sym_end;
char func_name[128], last_func_name[128];
unsigned long func_addr, last_pc, pc;
const char *incl_files[INCLUDE_STACK_SIZE];
int incl_index, len, last_line_num;
const char *str, *p;
LINENO CoffLineNo;
func_name[0] = '\0';
func_addr = 0;
incl_index = 0;
last_func_name[0] = '\0';
last_pc = 0;
last_line_num = 1;
sym = (Stab_Sym *) stab_section->data + 1;
sym_end =
(Stab_Sym *) (stab_section->data +
stab_section->data_offset);
while (sym < sym_end) {
switch (sym->n_type) {
/* function start or end */
case N_FUN:
if (sym->n_strx == 0) {
// end of function
CoffLineNo.l_addr.l_paddr = last_pc;
CoffLineNo.l_lnno = last_line_num + 1;
fwrite(&CoffLineNo, 6, 1, f);
pc = sym->n_value + func_addr;
func_name[0] = '\0';
func_addr = 0;
} else {
// beginning of function
str =
(const char *) stabstr_section->data +
sym->n_strx;
p = strchr(str, ':');
if (!p) {
pstrcpy(func_name, sizeof(func_name), str);
} else {
len = p - str;
if (len > sizeof(func_name) - 1)
len = sizeof(func_name) - 1;
memcpy(func_name, str, len);
func_name[len] = '\0';
}
func_addr = sym->n_value;
last_pc = func_addr;
last_line_num = -1;
// output a function begin
CoffLineNo.l_addr.l_symndx =
FindCoffSymbolIndex(func_name);
CoffLineNo.l_lnno = 0;
fwrite(&CoffLineNo, 6, 1, f);
}
break;
/* line number info */
case N_SLINE:
pc = sym->n_value + func_addr;
/* XXX: slow! */
strcpy(last_func_name, func_name);
// output a line reference
CoffLineNo.l_addr.l_paddr = last_pc;
if (last_line_num == -1) {
CoffLineNo.l_lnno = sym->n_desc;
} else {
CoffLineNo.l_lnno = last_line_num + 1;
}
fwrite(&CoffLineNo, 6, 1, f);
last_pc = pc;
last_line_num = sym->n_desc;
break;
/* include files */
case N_BINCL:
str =
(const char *) stabstr_section->data + sym->n_strx;
add_incl2:
if (incl_index < INCLUDE_STACK_SIZE) {
incl_files[incl_index++] = str;
}
break;
case N_EINCL:
if (incl_index > 1)
incl_index--;
break;
case N_SO:
if (sym->n_strx == 0) {
incl_index = 0; /* end of translation unit */
} else {
str =
(const char *) stabstr_section->data +
sym->n_strx;
/* do not add path */
len = strlen(str);
if (len > 0 && str[len - 1] != '/')
goto add_incl2;
}
break;
}
sym++;
}
}
}
// write symbol table
if (s1->do_debug) {
int k;
struct syment csym;
AUXFUNC auxfunc;
AUXBF auxbf;
AUXEF auxef;
int i;
Elf32_Sym *p;
const char *name;
int nstr;
int n = 0;
Coff_str_table = (char *) tcc_malloc(MAX_STR_TABLE);
pCoff_str_table = Coff_str_table;
nstr = 0;
p = (Elf32_Sym *) symtab_section->data;
for (i = 0; i < nb_syms; i++) {
name = symtab_section->link->data + p->st_name;
for (k = 0; k < 8; k++)
csym._n._n_name[k] = 0;
if (strlen(name) <= 8) {
strcpy(csym._n._n_name, name);
} else {
if (pCoff_str_table - Coff_str_table + strlen(name) >
MAX_STR_TABLE - 1)
tcc_error("String table too large");
csym._n._n_n._n_zeroes = 0;
csym._n._n_n._n_offset =
pCoff_str_table - Coff_str_table + 4;
strcpy(pCoff_str_table, name);
pCoff_str_table += strlen(name) + 1; // skip over null
nstr++;
}
if (p->st_info == 4) {
// put a filename symbol
csym.n_value = 33; // ?????
csym.n_scnum = N_DEBUG;
csym.n_type = 0;
csym.n_sclass = C_FILE;
csym.n_numaux = 0;
fwrite(&csym, 18, 1, f);
n++;
} else if (p->st_info == 0x12) {
// find the function data
for (k = 0; k < nFuncs; k++) {
if (strcmp(name, Func[k]) == 0)
break;
}
if (k >= nFuncs) {
tcc_error("debug info can't find function: %s", name);
}
// put a Function Name
csym.n_value = p->st_value; // physical address
csym.n_scnum = CoffTextSectionNo;
csym.n_type = MKTYPE(T_INT, DT_FCN, 0, 0, 0, 0, 0);
csym.n_sclass = C_EXT;
csym.n_numaux = 1;
fwrite(&csym, 18, 1, f);
// now put aux info
auxfunc.tag = 0;
auxfunc.size = EndAddress[k] - p->st_value;
auxfunc.fileptr = LineNoFilePtr[k];
auxfunc.nextsym = n + 6; // tktk
auxfunc.dummy = 0;
fwrite(&auxfunc, 18, 1, f);
// put a .bf
strcpy(csym._n._n_name, ".bf");
csym.n_value = p->st_value; // physical address
csym.n_scnum = CoffTextSectionNo;
csym.n_type = 0;
csym.n_sclass = C_FCN;
csym.n_numaux = 1;
fwrite(&csym, 18, 1, f);
// now put aux info
auxbf.regmask = 0;
auxbf.lineno = 0;
auxbf.nentries = FuncEntries[k];
auxbf.localframe = 0;
auxbf.nextentry = n + 6;
auxbf.dummy = 0;
fwrite(&auxbf, 18, 1, f);
// put a .ef
strcpy(csym._n._n_name, ".ef");
csym.n_value = EndAddress[k]; // physical address
csym.n_scnum = CoffTextSectionNo;
csym.n_type = 0;
csym.n_sclass = C_FCN;
csym.n_numaux = 1;
fwrite(&csym, 18, 1, f);
// now put aux info
auxef.dummy = 0;
auxef.lineno = LastLineNo[k];
auxef.dummy1 = 0;
auxef.dummy2 = 0;
auxef.dummy3 = 0;
auxef.dummy4 = 0;
fwrite(&auxef, 18, 1, f);
n += 6;
} else {
// try an put some type info
if ((p->st_other & VT_BTYPE) == VT_DOUBLE) {
csym.n_type = T_DOUBLE; // int
csym.n_sclass = C_EXT;
} else if ((p->st_other & VT_BTYPE) == VT_FLOAT) {
csym.n_type = T_FLOAT;
csym.n_sclass = C_EXT;
} else if ((p->st_other & VT_BTYPE) == VT_INT) {
csym.n_type = T_INT; // int
csym.n_sclass = C_EXT;
} else if ((p->st_other & VT_BTYPE) == VT_SHORT) {
csym.n_type = T_SHORT;
csym.n_sclass = C_EXT;
} else if ((p->st_other & VT_BTYPE) == VT_BYTE) {
csym.n_type = T_CHAR;
csym.n_sclass = C_EXT;
} else {
csym.n_type = T_INT; // just mark as a label
csym.n_sclass = C_LABEL;
}
csym.n_value = p->st_value;
csym.n_scnum = 2;
csym.n_numaux = 1;
fwrite(&csym, 18, 1, f);
auxfunc.tag = 0;
auxfunc.size = 0x20;
auxfunc.fileptr = 0;
auxfunc.nextsym = 0;
auxfunc.dummy = 0;
fwrite(&auxfunc, 18, 1, f);
n++;
n++;
}
p++;
}
}
if (s1->do_debug) {
// write string table
// first write the size
i = pCoff_str_table - Coff_str_table;
fwrite(&i, 4, 1, f);
// then write the strings
fwrite(Coff_str_table, i, 1, f);
tcc_free(Coff_str_table);
}
return 0;
}
void SortSymbolTable(void)
{
int i, j, k, n = 0;
Elf32_Sym *p, *p2, *NewTable;
char *name, *name2;
NewTable = (Elf32_Sym *) tcc_malloc(nb_syms * sizeof(Elf32_Sym));
p = (Elf32_Sym *) symtab_section->data;
// find a file symbol, copy it over
// then scan the whole symbol list and copy any function
// symbols that match the file association
for (i = 0; i < nb_syms; i++) {
if (p->st_info == 4) {
name = (char *) symtab_section->link->data + p->st_name;
// this is a file symbol, copy it over
NewTable[n++] = *p;
p2 = (Elf32_Sym *) symtab_section->data;
for (j = 0; j < nb_syms; j++) {
if (p2->st_info == 0x12) {
// this is a func symbol
name2 =
(char *) symtab_section->link->data + p2->st_name;
// find the function data index
for (k = 0; k < nFuncs; k++) {
if (strcmp(name2, Func[k]) == 0)
break;
}
if (k >= nFuncs) {
tcc_error("debug (sort) info can't find function: %s", name2);
}
if (strcmp(AssociatedFile[k], name) == 0) {
// yes they match copy it over
NewTable[n++] = *p2;
}
}
p2++;
}
}
p++;
}
// now all the filename and func symbols should have been copied over
// copy all the rest over (all except file and funcs)
p = (Elf32_Sym *) symtab_section->data;
for (i = 0; i < nb_syms; i++) {
if (p->st_info != 4 && p->st_info != 0x12) {
NewTable[n++] = *p;
}
p++;
}
if (n != nb_syms)
tcc_error("Internal Compiler error, debug info");
// copy it all back
p = (Elf32_Sym *) symtab_section->data;
for (i = 0; i < nb_syms; i++) {
*p++ = NewTable[i];
}
tcc_free(NewTable);
}
void clear_code_buf(void) {
tcc_free(code);
tcc_free(branch);
reset_code_buf();
}
static int tcc_compile_and_run(char* filename)
{
console_printf("Compiling script %s...\n", filename);
void* tcc = NULL;
TCCState * script_state = NULL;
void* script_buf = NULL;
tcc = module_load("ML/MODULES/tcc.mo");
if (!tcc)
{
console_printf("Could not load TCC compiler.\n");
goto err;
}
script_state = (void*) module_exec(tcc, "tcc_new", 0);
if (!script_state)
{
console_printf("Could not initialize TCC compiler.\n");
goto err;
}
module_exec(tcc, "tcc_set_options", 2, script_state, "-nostdlib");
module_exec(tcc, "tcc_set_options", 2, script_state, "-Wall");
module_exec(tcc, "tcc_set_options", 2, script_state, "-IML/scripts");
module_exec(tcc, "tcc_set_output_type", 2, script_state, TCC_OUTPUT_MEMORY);
int ret_compile = module_exec(tcc, "tcc_add_file", 2, script_state, filename);
if (ret_compile < 0)
{
console_printf("Compilation error.\n");
goto err;
}
script_load_symbols(tcc, script_state, "ML/modules/5D3_113.sym");
int size = module_exec(tcc, "tcc_relocate", 2, script_state, NULL);
if (size <= 0)
{
console_printf("Linking error.\n");
goto err;
}
script_buf = (void*) tcc_malloc(size);
if (!script_buf)
{
console_printf("Malloc error.\n");
goto err;
}
int ret_link = module_exec(tcc, "tcc_relocate", 2, script_state, script_buf);
if (ret_link < 0)
{
console_printf("Relocate error.\n");
goto err;
}
void (*script_main)() = (void*) module_exec(tcc, "tcc_get_symbol", 2, script_state, "main");
if (!script_main)
{
console_printf("Your script should have a main function.\n");
goto err;
}
script_define_param_variables(tcc, script_state);
module_exec(tcc, "tcc_delete", 1, script_state); script_state = NULL;
module_unload(tcc); tcc = NULL;
console_printf("Running script %s...\n", filename);
/* http://repo.or.cz/w/tinycc.git/commit/6ed6a36a51065060bd5e9bb516b85ff796e05f30 */
sync_caches();
script_main();
tcc_free(script_buf); script_buf = NULL;
return 0;
err:
if (script_buf) tcc_free(script_buf);
if (script_state) module_exec(tcc, "tcc_delete", 1, script_state);
if (tcc) module_unload(tcc);
return 1;
}
ST_FN int pe_assign_addresses (struct pe_info *pe)
{
int i, k, o, c;
DWORD addr;
int *section_order;
struct section_info *si;
Section *s;
// pe->thunk = new_section(pe->s1, ".iedat", SHT_PROGBITS, SHF_ALLOC);
section_order = tcc_malloc(pe->s1->nb_sections * sizeof (int));
for (o = k = 0 ; k < sec_last; ++k) {
for (i = 1; i < pe->s1->nb_sections; ++i) {
s = pe->s1->sections[i];
if (k == pe_section_class(s)) {
// printf("%s %d\n", s->name, k);
s->sh_addr = pe->imagebase;
section_order[o++] = i;
}
}
}
pe->sec_info = tcc_mallocz(o * sizeof (struct section_info));
addr = pe->imagebase + 1;
for (i = 0; i < o; ++i)
{
k = section_order[i];
s = pe->s1->sections[k];
c = pe_section_class(s);
si = &pe->sec_info[pe->sec_count];
#ifdef PE_MERGE_DATA
if (c == sec_bss && pe->sec_count && si[-1].cls == sec_data) {
/* append .bss to .data */
s->sh_addr = addr = ((addr-1) | 15) + 1;
addr += s->data_offset;
si[-1].sh_size = addr - si[-1].sh_addr;
continue;
}
#endif
strcpy(si->name, s->name);
si->cls = c;
si->ord = k;
si->sh_addr = s->sh_addr = addr = pe_virtual_align(addr);
si->sh_flags = s->sh_flags;
if (c == sec_data && NULL == pe->thunk)
pe->thunk = s;
if (s == pe->thunk) {
pe_build_imports(pe);
pe_build_exports(pe);
}
if (c == sec_reloc)
pe_build_reloc (pe);
if (s->data_offset)
{
if (s->sh_type != SHT_NOBITS) {
si->data = s->data;
si->data_size = s->data_offset;
}
addr += s->data_offset;
si->sh_size = s->data_offset;
++pe->sec_count;
}
// printf("%08x %05x %s\n", si->sh_addr, si->sh_size, si->name);
}
#if 0
for (i = 1; i < pe->s1->nb_sections; ++i) {
Section *s = pe->s1->sections[i];
int type = s->sh_type;
int flags = s->sh_flags;
printf("section %-16s %-10s %5x %s,%s,%s\n",
s->name,
type == SHT_PROGBITS ? "progbits" :
type == SHT_NOBITS ? "nobits" :
type == SHT_SYMTAB ? "symtab" :
type == SHT_STRTAB ? "strtab" :
type == SHT_REL ? "rel" : "???",
s->data_offset,
flags & SHF_ALLOC ? "alloc" : "",
flags & SHF_WRITE ? "write" : "",
flags & SHF_EXECINSTR ? "exec" : ""
);
}
pe->s1->verbose = 2;
#endif
tcc_free(section_order);
return 0;
}
ST_FN void pe_build_exports(struct pe_info *pe)
{
Elf32_Sym *sym;
int sym_index, sym_end;
DWORD rva_base, func_o, name_o, ord_o, str_o;
struct pe_export_header *hdr;
int sym_count, n, ord, *sorted, *sp;
FILE *op;
char buf[MAX_PATH];
const char *dllname;
const char *name;
rva_base = pe->thunk->sh_addr - pe->imagebase;
sym_count = 0, n = 1, sorted = NULL, op = NULL;
sym_end = symtab_section->data_offset / sizeof(Elf32_Sym);
for (sym_index = 1; sym_index < sym_end; ++sym_index) {
sym = (Elf32_Sym*)symtab_section->data + sym_index;
name = symtab_section->link->data + sym->st_name;
if ((sym->st_other & 1)
/* export only symbols from actually written sections */
&& pe->s1->sections[sym->st_shndx]->sh_addr) {
dynarray_add((void***)&sorted, &sym_count, (void*)n);
dynarray_add((void***)&sorted, &sym_count, (void*)name);
}
++n;
#if 0
if (sym->st_other & 1)
printf("export: %s\n", name);
if (sym->st_other & 2)
printf("stdcall: %s\n", name);
#endif
}
if (0 == sym_count)
return;
sym_count /= 2;
qsort (sorted, sym_count, 2 * sizeof sorted[0], sym_cmp);
pe_align_section(pe->thunk, 16);
dllname = tcc_basename(pe->filename);
pe->exp_offs = pe->thunk->data_offset;
func_o = pe->exp_offs + sizeof(struct pe_export_header);
name_o = func_o + sym_count * sizeof (DWORD);
ord_o = name_o + sym_count * sizeof (DWORD);
str_o = ord_o + sym_count * sizeof(WORD);
hdr = section_ptr_add(pe->thunk, str_o - pe->exp_offs);
hdr->Characteristics = 0;
hdr->Base = 1;
hdr->NumberOfFunctions = sym_count;
hdr->NumberOfNames = sym_count;
hdr->AddressOfFunctions = func_o + rva_base;
hdr->AddressOfNames = name_o + rva_base;
hdr->AddressOfNameOrdinals = ord_o + rva_base;
hdr->Name = str_o + rva_base;
put_elf_str(pe->thunk, dllname);
#if 1
/* automatically write exports to <output-filename>.def */
strcpy(buf, pe->filename);
strcpy(tcc_fileextension(buf), ".def");
op = fopen(buf, "w");
if (NULL == op) {
error_noabort("could not create '%s': %s", buf, strerror(errno));
} else {
fprintf(op, "LIBRARY %s\n\nEXPORTS\n", dllname);
if (pe->s1->verbose)
printf("<- %s (%d symbols)\n", buf, sym_count);
}
#endif
for (sp = sorted, ord = 0; ord < sym_count; ++ord, sp += 2)
{
sym_index = sp[0], name = (const char *)sp[1];
/* insert actual address later in pe_relocate_rva */
put_elf_reloc(symtab_section, pe->thunk,
func_o, R_386_RELATIVE, sym_index);
*(DWORD*)(pe->thunk->data + name_o)
= pe->thunk->data_offset + rva_base;
*(WORD*)(pe->thunk->data + ord_o)
= ord;
put_elf_str(pe->thunk, name);
func_o += sizeof (DWORD);
name_o += sizeof (DWORD);
ord_o += sizeof (WORD);
if (op)
fprintf(op, "%s\n", name);
}
pe->exp_size = pe->thunk->data_offset - pe->exp_offs;
tcc_free(sorted);
}
void cstr_free(CString *cstr) {
tcc_free(cstr->data_allocated);
cstr_new(cstr);
}
