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| author | Rich Felker <dalias@aerifal.cx> | 2012-10-04 20:04:13 -0400 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2012-10-04 20:04:13 -0400 |
| commit | bc6a35fb7b02f068b901f22a56559996395cfd3b (patch) | |
| tree | 6d96b2475c1912259cb3c3b1510e96805febb561 /src/env/__init_tls.c | |
| parent | 8431d7972fd9be0fdcaff8516316d748e81724bb (diff) | |
| download | musl-bc6a35fb7b02f068b901f22a56559996395cfd3b.tar.gz | |
partial TLS support for dynamic-linked programs
only TLS in the main program is supported so far; TLS defined in
shared libraries will not work yet.
Diffstat (limited to 'src/env/__init_tls.c')
| -rw-r--r-- | src/env/__init_tls.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/src/env/__init_tls.c b/src/env/__init_tls.c index 4a840cf2..aff388bd 100644 --- a/src/env/__init_tls.c +++ b/src/env/__init_tls.c @@ -7,13 +7,14 @@ #ifndef SHARED static void *image; -static size_t len, bss, align; +static size_t len, size, align; void *__copy_tls(unsigned char *mem, size_t cnt) { + mem += -size & (4*sizeof(size_t)-1); mem += ((uintptr_t)image - (uintptr_t)mem) & (align-1); memcpy(mem, image, len); - return mem + len + bss; + return mem + size; } static void *simple(void *p) @@ -53,13 +54,12 @@ void __init_tls(size_t *auxv) } if (!tls_phdr) return; - libc.tls_size = len+bss+align+4*sizeof(size_t)+sizeof(struct pthread); + libc.tls_size = size+align+8*sizeof(size_t)+sizeof(struct pthread); image = (void *)(base + tls_phdr->p_vaddr); len = tls_phdr->p_filesz; - bss = tls_phdr->p_memsz - len; + size = tls_phdr->p_memsz; align = tls_phdr->p_align; - if (align < 4*sizeof(size_t)) align = 4*sizeof(size_t); mem = __mmap(0, libc.tls_size, PROT_READ|PROT_WRITE, MAP_ANONYMOUS|MAP_PRIVATE, -1, 0); if (mem == MAP_FAILED) a_crash(); |