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Add support for thread-local storage variables

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This commit is contained in:
Thomas Preud'homme
2013-10-29 22:10:02 +08:00
parent 3b07a15fd1
commit 1c4afd1350
5 changed files with 54 additions and 14 deletions
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29
tccelf.c
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@ -1543,6 +1543,7 @@ static int elf_output_file(TCCState *s1, const char *filename)
int fd, mode, ret;
int *section_order;
int shnum, i, phnum, file_offset, offset, size, j, sh_order_index, k;
int have_tls_section = 0;
long long tmp;
addr_t addr;
Section *strsec, *s;
@ -1861,6 +1862,11 @@ static int elf_output_file(TCCState *s1, const char *filename)
/* we output all sections if debug or object file */
s->sh_size = s->data_offset;
}
/* if tls section we'll need to add one segment */
if (s->sh_flags & SHF_TLS) {
have_tls_section = 1;
phnum++;
}
}
/* allocate program segment headers */
@ -1904,12 +1910,16 @@ static int elf_output_file(TCCState *s1, const char *filename)
if (interp)
ph += 1 + HAVE_PHDR;
for(j = 0; j < 2; j++) {
ph->p_type = PT_LOAD;
if (j == 0)
ph->p_flags = PF_R | PF_X;
for(j = 0; j < 2 + have_tls_section; j++) {
if (j != 2)
ph->p_type = PT_LOAD;
else
ph->p_flags = PF_R | PF_W;
ph->p_type = PT_TLS;
ph->p_flags = PF_R;
if (j == 0)
ph->p_flags |= PF_X;
else if (j == 1)
ph->p_flags |= PF_W;
ph->p_align = s1->section_align;
/* we do the following ordering: interp, symbol tables,
@ -1920,13 +1930,16 @@ static int elf_output_file(TCCState *s1, const char *filename)
s = s1->sections[i];
/* compute if section should be included */
if (j == 0) {
if ((s->sh_flags & (SHF_ALLOC | SHF_WRITE)) !=
if ((s->sh_flags & (SHF_ALLOC | SHF_WRITE | SHF_TLS)) !=
SHF_ALLOC)
continue;
} else {
if ((s->sh_flags & (SHF_ALLOC | SHF_WRITE)) !=
} else if (j == 1) {
if ((s->sh_flags & (SHF_ALLOC | SHF_WRITE | SHF_TLS)) !=
(SHF_ALLOC | SHF_WRITE))
continue;
} else {
if ((s->sh_flags & SHF_TLS) != SHF_TLS)
continue;
}
if (s == interp) {
if (k != 0)