+2014-05-27 Andreas Schwab <schwab@suse.de>
+
+ * csu/libc-tls.c (__libc_setup_tls): Remove second argument from
+ TLS_INIT_TP macro.
+ * elf/dl-load.c (_dl_map_object_from_fd): Likewise.
+ * elf/rtld.c (init_tls, dl_main): Likewise.
+ * nptl/sysdeps/i386/tls.h (TLS_INIT_TP): Likewise.
+ * nptl/sysdeps/powerpc/tls.h (TLS_INIT_TP): Likewise.
+ * nptl/sysdeps/s390/tls.h (TLS_INIT_TP): Likewise.
+ * nptl/sysdeps/sh/tls.h (TLS_INIT_TP): Likewise.
+ * nptl/sysdeps/sparc/tls.h (TLS_INIT_TP): Likewise.
+ * nptl/sysdeps/x86_64/tls.h (TLS_INIT_TP): Likewise.
+ * sysdeps/aarch64/nptl/tls.h (TLS_INIT_TP): Likewise.
+ * sysdeps/alpha/nptl/tls.h (TLS_INIT_TP): Likewise.
+ * sysdeps/arm/nptl/tls.h (TLS_INIT_TP): Likewise.
+ * sysdeps/hppa/nptl/tls.h (TLS_INIT_TP): Likewise.
+ * sysdeps/ia64/nptl/tls.h (TLS_INIT_TP): Likewise.
+ * sysdeps/m68k/nptl/tls.h (TLS_INIT_TP): Likewise.
+ * sysdeps/mach/hurd/i386/tls.h (_hurd_tls_init): Likewise.
+ * sysdeps/microblaze/nptl/tls.h (TLS_INIT_TP): Likewise.
+ * sysdeps/mips/nptl/tls.h (TLS_INIT_TP): Likewise.
+ * sysdeps/tile/nptl/tls.h (TLS_INIT_TP): Likewise.
+ * sysdeps/generic/tls.h: Update description.
+
2014-05-27 Will Newton <will.newton@linaro.org>
[BZ #16990]
#if TLS_TCB_AT_TP
INSTALL_DTV ((char *) tlsblock + tcb_offset, _dl_static_dtv);
- const char *lossage = TLS_INIT_TP ((char *) tlsblock + tcb_offset, 0);
+ const char *lossage = TLS_INIT_TP ((char *) tlsblock + tcb_offset);
#elif TLS_DTV_AT_TP
INSTALL_DTV (tlsblock, _dl_static_dtv);
- const char *lossage = TLS_INIT_TP (tlsblock, 0);
+ const char *lossage = TLS_INIT_TP (tlsblock);
#else
# error "Either TLS_TCB_AT_TP or TLS_DTV_AT_TP must be defined"
#endif
}
/* Now we install the TCB in the thread register. */
- errstring = TLS_INIT_TP (tcb, 0);
+ errstring = TLS_INIT_TP (tcb);
if (__glibc_likely (errstring == NULL))
{
/* Now we are all good. */
GL(dl_initial_dtv) = GET_DTV (tcbp);
/* And finally install it for the main thread. */
- const char *lossage = TLS_INIT_TP (tcbp, 0);
+ const char *lossage = TLS_INIT_TP (tcbp);
if (__glibc_unlikely (lossage != NULL))
_dl_fatal_printf ("cannot set up thread-local storage: %s\n", lossage);
tls_init_tp_called = true;
/* And finally install it for the main thread. */
if (! tls_init_tp_called)
{
- const char *lossage = TLS_INIT_TP (tcbp, 0);
+ const char *lossage = TLS_INIT_TP (tcbp);
if (__glibc_unlikely (lossage != NULL))
_dl_fatal_printf ("cannot set up thread-local storage: %s\n",
lossage);
/* Code to initially initialize the thread pointer. This might need
special attention since 'errno' is not yet available and if the
operation can cause a failure 'errno' must not be touched. */
-# define TLS_INIT_TP(thrdescr, secondcall) \
+# define TLS_INIT_TP(thrdescr) \
({ void *_thrdescr = (thrdescr); \
tcbhead_t *_head = _thrdescr; \
union user_desc_init _segdescr; \
INIT_SYSINFO; \
\
/* The 'entry_number' field. Let the kernel pick a value. */ \
- if (secondcall) \
- _segdescr.vals[0] = TLS_GET_GS () >> 3; \
- else \
- _segdescr.vals[0] = -1; \
+ _segdescr.vals[0] = -1; \
/* The 'base_addr' field. Pointer to the TCB. */ \
_segdescr.vals[1] = (unsigned long int) _thrdescr; \
/* The 'limit' field. We use 4GB which is 0xfffff pages. */ \
/* Code to initially initialize the thread pointer. This might need
special attention since 'errno' is not yet available and if the
operation can cause a failure 'errno' must not be touched. */
-# define TLS_INIT_TP(tcbp, secondcall) \
+# define TLS_INIT_TP(tcbp) \
(__thread_register = (void *) (tcbp) + TLS_TCB_OFFSET, NULL)
/* Return the address of the dtv for the current thread. */
/* Code to initially initialize the thread pointer. This might need
special attention since 'errno' is not yet available and if the
operation can cause a failure 'errno' must not be touched. */
-# define TLS_INIT_TP(thrdescr, secondcall) \
+# define TLS_INIT_TP(thrdescr) \
({ void *_thrdescr = (thrdescr); \
tcbhead_t *_head = _thrdescr; \
\
/* Code to initially initialize the thread pointer. This might need
special attention since 'errno' is not yet available and if the
operation can cause a failure 'errno' must not be touched. */
-# define TLS_INIT_TP(tcbp, secondcall) \
+# define TLS_INIT_TP(tcbp) \
({ __asm __volatile ("ldc %0,gbr" : : "r" (tcbp)); 0; })
/* Return the address of the dtv for the current thread. */
(((tcbhead_t *) (descr))->dtv)
/* Code to initially initialize the thread pointer. */
-# define TLS_INIT_TP(descr, secondcall) \
+# define TLS_INIT_TP(descr) \
(__thread_self = (__typeof (__thread_self)) (descr), NULL)
/* Return the address of the dtv for the current thread. */
We have to make the syscall for both uses of the macro since the
address might be (and probably is) different. */
-# define TLS_INIT_TP(thrdescr, secondcall) \
+# define TLS_INIT_TP(thrdescr) \
({ void *_thrdescr = (thrdescr); \
tcbhead_t *_head = _thrdescr; \
int _result; \
/* Code to initially initialize the thread pointer. This might need
special attention since 'errno' is not yet available and if the
operation can cause a failure 'errno' must not be touched. */
-# define TLS_INIT_TP(tcbp, secondcall) \
+# define TLS_INIT_TP(tcbp) \
({ __asm __volatile ("msr tpidr_el0, %0" : : "r" (tcbp)); NULL; })
/* Return the address of the dtv for the current thread. */
/* Code to initially initialize the thread pointer. This might need
special attention since 'errno' is not yet available and if the
operation can cause a failure 'errno' must not be touched. */
-# define TLS_INIT_TP(tcbp, secondcall) \
+# define TLS_INIT_TP(tcbp) \
(__builtin_set_thread_pointer ((void *)(tcbp)), NULL)
/* Return the address of the dtv for the current thread. */
/* Code to initially initialize the thread pointer. This might need
special attention since 'errno' is not yet available and if the
operation can cause a failure 'errno' must not be touched. */
-# define TLS_INIT_TP(tcbp, secondcall) \
+# define TLS_INIT_TP(tcbp) \
({ INTERNAL_SYSCALL_DECL (err); \
long result_var; \
result_var = INTERNAL_SYSCALL_ARM (set_tls, err, 1, (tcbp)); \
use the value.
- TLS_INIT_TP(tcb, firstcall)
+ TLS_INIT_TP(tcb)
This macro must initialize the thread pointer to enable normal TLS
- operation. The first parameter is a pointer to the thread control
- block. The second parameter specifies whether this is the first
- call for the TCB. ld.so calls this macro more than once.
+ operation. The parameter is a pointer to the thread control block.
+ ld.so calls this macro once.
THREAD_DTV()
/* Code to initially initialize the thread pointer. This might need
special attention since 'errno' is not yet available and if the
operation can cause a failure 'errno' must not be touched. */
-# define TLS_INIT_TP(tcbp, secondcall) \
+# define TLS_INIT_TP(tcbp) \
({ __set_cr27(tcbp); NULL; })
/* Return the address of the dtv for the current thread. */
/* Code to initially initialize the thread pointer. This might need
special attention since 'errno' is not yet available and if the
operation can cause a failure 'errno' must not be touched. */
-# define TLS_INIT_TP(thrdescr, secondcall) \
+# define TLS_INIT_TP(thrdescr) \
(__thread_self = (thrdescr), INIT_SYSINFO, NULL)
/* Return the address of the dtv for the current thread. */
/* Code to initially initialize the thread pointer. This might need
special attention since 'errno' is not yet available and if the
operation can cause a failure 'errno' must not be touched. */
-# define TLS_INIT_TP(tcbp, secondcall) \
+# define TLS_INIT_TP(tcbp) \
({ \
INTERNAL_SYSCALL_DECL (err); \
int _sys_result; \
static inline const char * __attribute__ ((unused))
-_hurd_tls_init (tcbhead_t *tcb, int secondcall)
+_hurd_tls_init (tcbhead_t *tcb)
{
HURD_TLS_DESC_DECL (desc, tcb);
- if (!secondcall)
+ /* This field is used by TLS accesses to get our "thread pointer"
+ from the TLS point of view. */
+ tcb->tcb = tcb;
+
+ /* Cache our thread port. */
+ tcb->self = __mach_thread_self ();
+
+ /* Get the first available selector. */
+ int sel = -1;
+ error_t err = __i386_set_gdt (tcb->self, &sel, desc);
+ if (err == MIG_BAD_ID)
{
- /* This field is used by TLS accesses to get our "thread pointer"
- from the TLS point of view. */
- tcb->tcb = tcb;
-
- /* Cache our thread port. */
- tcb->self = __mach_thread_self ();
-
- /* Get the first available selector. */
- int sel = -1;
- error_t err = __i386_set_gdt (tcb->self, &sel, desc);
- if (err == MIG_BAD_ID)
- {
- /* Old kernel, use a per-thread LDT. */
- sel = 0x27;
- err = __i386_set_ldt (tcb->self, sel, &desc, 1);
- assert_perror (err);
- if (err)
- return "i386_set_ldt failed";
- }
- else if (err)
- {
- assert_perror (err); /* Separate from above with different line #. */
- return "i386_set_gdt failed";
- }
-
- /* Now install the new selector. */
- asm volatile ("mov %w0, %%gs" :: "q" (sel));
+ /* Old kernel, use a per-thread LDT. */
+ sel = 0x27;
+ err = __i386_set_ldt (tcb->self, sel, &desc, 1);
+ assert_perror (err);
+ if (err)
+ return "i386_set_ldt failed";
}
- else
+ else if (err)
{
- /* Fetch the selector set by the first call. */
- int sel;
- asm ("mov %%gs, %w0" : "=q" (sel) : "0" (0));
- if (__builtin_expect (sel, 0x50) & 4) /* LDT selector */
- {
- error_t err = __i386_set_ldt (tcb->self, sel, &desc, 1);
- assert_perror (err);
- if (err)
- return "i386_set_ldt failed";
- }
- else
- {
- error_t err = __i386_set_gdt (tcb->self, &sel, desc);
- assert_perror (err);
- if (err)
- return "i386_set_gdt failed";
- }
+ assert_perror (err); /* Separate from above with different line #. */
+ return "i386_set_gdt failed";
}
+ /* Now install the new selector. */
+ asm volatile ("mov %w0, %%gs" :: "q" (sel));
+
return 0;
}
/* Code to initially initialize the thread pointer. This might need
special attention since 'errno' is not yet available and if the
operation can cause a failure 'errno' must not be touched. */
-# define TLS_INIT_TP(descr, secondcall) \
- _hurd_tls_init ((tcbhead_t *) (descr), (secondcall))
+# define TLS_INIT_TP(descr) \
+ _hurd_tls_init ((tcbhead_t *) (descr))
/* Return the TCB address of the current thread. */
# define THREAD_SELF \
/* Code to initially initialize the thread pointer.
r21 is reserved for thread pointer. */
-# define TLS_INIT_TP(tcbp, secondcall) \
+# define TLS_INIT_TP(tcbp) \
({ __asm __volatile ("or r21,r0,%0" : : "r" ((void *)tcbp)); 0; })
/* Return the address of the dtv for the current thread. */
/* Code to initially initialize the thread pointer. This might need
special attention since 'errno' is not yet available and if the
operation can cause a failure 'errno' must not be touched. */
-# define TLS_INIT_TP(tcbp, secondcall) \
+# define TLS_INIT_TP(tcbp) \
({ INTERNAL_SYSCALL_DECL (err); \
long result_var; \
result_var = INTERNAL_SYSCALL (set_thread_area, err, 1, \
# define GET_DTV(tcbp) (((tcbhead_t *) (tcbp))[-1].dtv)
/* Code to initially initialize the thread pointer (tp). */
-# define TLS_INIT_TP(tcbp, secondcall) \
+# define TLS_INIT_TP(tcbp) \
(__thread_pointer = (char *)(tcbp) + TLS_TCB_OFFSET, NULL)
/* Return the address of the dtv for the current thread. */
projects / external / glibc.git / commitdiff