Alien-TinyCC
view release on metacpan or search on metacpan
src/tccelf.c view on Meta::CPAN
for(i = 0; i < s1->nb_loaded_dlls; i++) {
DLLReference *dllref = s1->loaded_dlls[i];
if (dllref->level == 0)
put_dt(dynamic, DT_NEEDED, put_elf_str(dynstr, dllref->name));
}
if (s1->rpath)
put_dt(dynamic, DT_RPATH, put_elf_str(dynstr, s1->rpath));
/* XXX: currently, since we do not handle PIC code, we
must relocate the readonly segments */
if (file_type == TCC_OUTPUT_DLL) {
if (s1->soname)
put_dt(dynamic, DT_SONAME, put_elf_str(dynstr, s1->soname));
put_dt(dynamic, DT_TEXTREL, 0);
}
if (s1->symbolic)
put_dt(dynamic, DT_SYMBOLIC, 0);
/* add necessary space for other entries */
saved_dynamic_data_offset = dynamic->data_offset;
dynamic->data_offset += sizeof(ElfW(Dyn)) * EXTRA_RELITEMS;
} else {
/* still need to build got entries in case of static link */
build_got_entries(s1);
}
}
memset(&ehdr, 0, sizeof(ehdr));
/* we add a section for symbols */
strsec = new_section(s1, ".shstrtab", SHT_STRTAB, 0);
put_elf_str(strsec, "");
/* compute number of sections */
shnum = s1->nb_sections;
/* this array is used to reorder sections in the output file */
section_order = tcc_malloc(sizeof(int) * shnum);
section_order[0] = 0;
sh_order_index = 1;
/* compute number of program headers */
switch(file_type) {
default:
case TCC_OUTPUT_OBJ:
phnum = 0;
break;
case TCC_OUTPUT_EXE:
if (!s1->static_link)
phnum = 4 + HAVE_PHDR;
else
phnum = 2;
break;
case TCC_OUTPUT_DLL:
phnum = 3;
break;
}
/* allocate strings for section names and decide if an unallocated
section should be output */
/* NOTE: the strsec section comes last, so its size is also
correct ! */
for(i = 1; i < s1->nb_sections; i++) {
s = s1->sections[i];
s->sh_name = put_elf_str(strsec, s->name);
#if 0 /* gr */
printf("section: f=%08x t=%08x i=%08x %s %s\n",
s->sh_flags,
s->sh_type,
s->sh_info,
s->name,
s->reloc ? s->reloc->name : "n"
);
#endif
/* when generating a DLL, we include relocations but we may
patch them */
if (file_type == TCC_OUTPUT_DLL &&
s->sh_type == SHT_RELX &&
!(s->sh_flags & SHF_ALLOC)) {
/* //gr: avoid bogus relocs for empty (debug) sections */
if (s1->sections[s->sh_info]->sh_flags & SHF_ALLOC)
prepare_dynamic_rel(s1, s);
else if (s1->do_debug)
s->sh_size = s->data_offset;
} else if (s1->do_debug ||
file_type == TCC_OUTPUT_OBJ ||
(s->sh_flags & SHF_ALLOC) ||
i == (s1->nb_sections - 1)) {
/* we output all sections if debug or object file */
s->sh_size = s->data_offset;
}
}
/* allocate program segment headers */
phdr = tcc_mallocz(phnum * sizeof(ElfW(Phdr)));
if (s1->output_format == TCC_OUTPUT_FORMAT_ELF) {
file_offset = sizeof(ElfW(Ehdr)) + phnum * sizeof(ElfW(Phdr));
} else {
file_offset = 0;
}
if (phnum > 0) {
/* compute section to program header mapping */
if (s1->has_text_addr) {
int a_offset, p_offset;
addr = s1->text_addr;
/* we ensure that (addr % ELF_PAGE_SIZE) == file_offset %
ELF_PAGE_SIZE */
a_offset = (int) (addr & (s1->section_align - 1));
p_offset = file_offset & (s1->section_align - 1);
if (a_offset < p_offset)
a_offset += s1->section_align;
file_offset += (a_offset - p_offset);
} else {
if (file_type == TCC_OUTPUT_DLL)
addr = 0;
else
addr = ELF_START_ADDR;
/* compute address after headers */
( run in 1.828 second using v1.01-cache-2.11-cpan-13bb782fe5a )