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hurd: add TLS support

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* sysdeps/generic/thread_state.h (MACHINE_NEW_THREAD_STATE_FLAVOR):
	Define macro.
	* sysdeps/mach/thread_state.h (MACHINE_THREAD_STATE_FIX_NEW): New macro.
	* sysdeps/mach/i386/thread_state.h
	(MACHINE_NEW_THREAD_STATE_FLAVOR): New macro, defined to
	i386_THREAD_STATE.
	(MACHINE_THREAD_STATE_FLAVOR): Define to i386_REGS_SEGS_STATE instead of
	i386_THREAD_STATE.
	(MACHINE_THREAD_STATE_FIX_NEW): New macro, reads segments.

	* sysdeps/mach/hurd/i386/trampoline.c (_hurd_setup_sighandler): Use
	i386_REGS_SEGS_STATE instead of i386_THREAD_STATE.

	* sysdeps/mach/hurd/i386/tls.h (TCB_ALIGNMENT, HURD_SEL_LDT): New
	macros.
	(_hurd_tls_fork): Add original thread parameter, Duplicate existing LDT
	descriptor instead of creating a new one.
	(_hurd_tls_new): New function, creates a new descriptor and updates tcb.

	* mach/setup-thread.c: Include <ldsodefs.h>.
	(__mach_setup_thread): Call _dl_allocate_tls, pass
	MACHINE_NEW_THREAD_STATE_FLAVOR to __thread_set_state instead of
	MACHINE_THREAD_STATE_FLAVOR, before getting
	MACHINE_THREAD_STATE_FLAVOR, calling _hurd_tls_new, and setting
	MACHINE_THREAD_STATE_FLAVOR with the result.
	* hurd/hurdfault.c (_hurdsig_fault_init): Call
	MACHINE_THREAD_STATE_FIX_NEW.
	* sysdeps/mach/hurd/fork.c (__fork): Call _hurd_tls_fork for sigthread
	too.  Add original thread parameter.
This commit is contained in:
Samuel Thibault
2018-03-17 03:17:36 +01:00
parent c553cd6f7e
commit f8baf2a224
9 changed files with 132 additions and 10 deletions
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23
mach/setup-thread.c
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@ -19,6 +19,7 @@
#include <thread_state.h>
#include <string.h>
#include <mach/machine/vm_param.h>
#include <ldsodefs.h>
#include "sysdep.h" /* Defines stack direction. */
#define STACK_SIZE (16 * 1024 * 1024) /* 16MB, arbitrary. */
@ -41,6 +42,7 @@ __mach_setup_thread (task_t task, thread_t thread, void *pc,
vm_address_t stack;
vm_size_t size;
int anywhere;
tcbhead_t *tcb;
size = stack_size ? *stack_size ? : STACK_SIZE : STACK_SIZE;
stack = stack_base ? *stack_base ? : 0 : 0;
@ -50,6 +52,10 @@ __mach_setup_thread (task_t task, thread_t thread, void *pc,
if (error)
return error;
tcb = _dl_allocate_tls(NULL);
if (tcb == NULL)
return KERN_RESOURCE_SHORTAGE;
if (stack_size)
*stack_size = size;
@ -72,8 +78,21 @@ __mach_setup_thread (task_t task, thread_t thread, void *pc,
if (error = __vm_protect (task, stack, __vm_page_size, 0, VM_PROT_NONE))
return error;
return __thread_set_state (thread, MACHINE_THREAD_STATE_FLAVOR,
(natural_t *) &ts, tssize);
if (error = __thread_set_state (thread, MACHINE_NEW_THREAD_STATE_FLAVOR,
(natural_t *) &ts, tssize))
return error;
if (error = __thread_get_state (thread, MACHINE_THREAD_STATE_FLAVOR,
(natural_t *) &ts, &tssize))
return error;
assert (tssize == MACHINE_THREAD_STATE_COUNT);
_hurd_tls_new(thread, &ts, tcb);
error = __thread_set_state (thread, MACHINE_THREAD_STATE_FLAVOR,
(natural_t *) &ts, tssize);
return error;
}
weak_alias (__mach_setup_thread, mach_setup_thread)