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Differential D54507 Diff 169027 libexec/rtld-elf/rtld.c

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libexec/rtld-elf/rtld.c

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{ {
Obj_Entry *obj; Obj_Entry *obj;
char *tls_block; char *tls_block;
struct dtv *dtv; struct dtv *dtv;
struct tcb *tcb; struct tcb *tcb;
char *addr; char *addr;
size_t i; size_t i;
size_t extra_size, maxalign, post_size, pre_size, tls_block_size; size_t extra_size, maxalign, post_size, pre_size, tls_block_size;
size_t tls_init_align, tls_init_offset; size_t tls_init_align, tls_init_offset, tls_pad_offset;
jhbAuthorUnsubmitted
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Not sure if pad is quite the right name for this region? But given it's zeroed, that was the best guess I had for it.

jhb: Not sure if `pad` is quite the right name for this region? But given it's zeroed, that was the…
jrtc27Unsubmitted
Not Done
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tls_bss_offset? Given generally arises from .tbss.

jrtc27: tls_bss_offset? Given generally arises from .tbss.
if (oldtcb != NULL && tcbsize == TLS_TCB_SIZE) if (oldtcb != NULL && tcbsize == TLS_TCB_SIZE)
return (oldtcb); return (oldtcb);
assert(tcbsize >= TLS_TCB_SIZE); assert(tcbsize >= TLS_TCB_SIZE);
maxalign = MAX(tcbalign, tls_static_max_align); maxalign = MAX(tcbalign, tls_static_max_align);
tls_init_align = MAX(obj_main->tlsalign, 1); tls_init_align = MAX(obj_main->tlsalign, 1);
▲ Show 20 Lines • Show All 41 Lines • ▼ Show 20 Lines for (obj = globallist_curr(objs); obj != NULL;
addr = (char *)tcb + obj->tlsoffset; addr = (char *)tcb + obj->tlsoffset;
if (tls_init_offset > 0) if (tls_init_offset > 0)
memset(addr, 0, tls_init_offset); memset(addr, 0, tls_init_offset);
if (obj->tlsinitsize > 0) { if (obj->tlsinitsize > 0) {
memcpy(addr + tls_init_offset, obj->tlsinit, memcpy(addr + tls_init_offset, obj->tlsinit,
obj->tlsinitsize); obj->tlsinitsize);
} }
if (obj->tlssize > obj->tlsinitsize) { if (obj->tlssize > obj->tlsinitsize) {
memset(addr + tls_init_offset + tls_pad_offset = tls_init_offset +
obj->tlsinitsize, obj->tlsinitsize;
0, memset(addr + tls_pad_offset, 0,
obj->tlssize - obj->tlsinitsize - obj->tlssize - tls_pad_offset);
tls_init_offset);
} }
dtv->dtv_slots[obj->tlsindex - 1].dtvs_tls = addr; dtv->dtv_slots[obj->tlsindex - 1].dtvs_tls = addr;
} }
} }
tcb_list_insert(tcb); tcb_list_insert(tcb);
return (tcb); return (tcb);
} }
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