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fix crashes in x32 __tls_get_addr

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x32 has another gratuitous difference to all other archs:
it passes an array of 64bit values to __tls_get_addr().
usually it is an array of size_t.
This commit is contained in:
rofl0r 2017-01-13 10:28:46 +00:00
parent 27b3fd68f6
commit 1f53e7d00c
4 changed files with 13 additions and 7 deletions
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2
arch/x32/pthread_arch.h
View File

@ -10,3 +10,5 @@ static inline struct pthread *__pthread_self()
#define MC_PC gregs[REG_RIP]
#define CANARY canary2
#define tls_mod_off_t unsigned long long

10
ldso/dynlink.c
View File

@ -1257,7 +1257,7 @@ void __init_tls(size_t *auxv)
}
__attribute__((__visibility__("hidden")))
void *__tls_get_new(size_t *v)
void *__tls_get_new(tls_mod_off_t *v)
{
pthread_t self = __pthread_self();
@ -1769,7 +1769,7 @@ static void *addr2dso(size_t a)
return 0;
}
void *__tls_get_addr(size_t *);
void *__tls_get_addr(tls_mod_off_t *);
static void *do_dlsym(struct dso *p, const char *s, void *ra)
{
@ -1787,7 +1787,7 @@ static void *do_dlsym(struct dso *p, const char *s, void *ra)
struct symdef def = find_sym(p, s, 0);
if (!def.sym) goto failed;
if ((def.sym->st_info&0xf) == STT_TLS)
return __tls_get_addr((size_t []){def.dso->tls_id, def.sym->st_value});
return __tls_get_addr((tls_mod_off_t []){def.dso->tls_id, def.sym->st_value});
if (DL_FDPIC && (def.sym->st_info&0xf) == STT_FUNC)
return def.dso->funcdescs + (def.sym - def.dso->syms);
return laddr(def.dso, def.sym->st_value);
@ -1802,7 +1802,7 @@ static void *do_dlsym(struct dso *p, const char *s, void *ra)
sym = sysv_lookup(s, h, p);
}
if (sym && (sym->st_info&0xf) == STT_TLS)
return __tls_get_addr((size_t []){p->tls_id, sym->st_value});
return __tls_get_addr((tls_mod_off_t []){p->tls_id, sym->st_value});
if (DL_FDPIC && sym && sym->st_shndx && (sym->st_info&0xf) == STT_FUNC)
return p->funcdescs + (sym - p->syms);
if (sym && sym->st_value && (1<<(sym->st_info&0xf) & OK_TYPES))
@ -1816,7 +1816,7 @@ static void *do_dlsym(struct dso *p, const char *s, void *ra)
sym = sysv_lookup(s, h, p->deps[i]);
}
if (sym && (sym->st_info&0xf) == STT_TLS)
return __tls_get_addr((size_t []){p->deps[i]->tls_id, sym->st_value});
return __tls_get_addr((tls_mod_off_t []){p->deps[i]->tls_id, sym->st_value});
if (DL_FDPIC && sym && sym->st_shndx && (sym->st_info&0xf) == STT_FUNC)
return p->deps[i]->funcdescs + (sym - p->deps[i]->syms);
if (sym && sym->st_value && (1<<(sym->st_info&0xf) & OK_TYPES))

4
src/internal/pthread_impl.h
View File

@ -97,6 +97,10 @@ struct __timer {
#define DTP_OFFSET 0
#endif
#ifndef tls_mod_off_t
#define tls_mod_off_t size_t
#endif
#define SIGTIMER 32
#define SIGCANCEL 33
#define SIGSYNCCALL 34

4
src/thread/__tls_get_addr.c
View File

@ -3,9 +3,9 @@
#include "libc.h"
__attribute__((__visibility__("hidden")))
void *__tls_get_new(size_t *);
void *__tls_get_new(tls_mod_off_t *);
void *__tls_get_addr(size_t *v)
void *__tls_get_addr(tls_mod_off_t *v)
{
pthread_t self = __pthread_self();
if (v[0]<=(size_t)self->dtv[0])