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authorSamuel Thibault <samuel.thibault@ens-lyon.org>2018-03-17 03:17:36 +0100
committerSamuel Thibault <samuel.thibault@ens-lyon.org>2018-03-17 03:17:36 +0100
commitf8baf2a2242029600beb213d3f042e7c0482e502 (patch)
tree43df708e6da8a0cb7520bb218d6ebfcecfe54c86 /mach
parentc553cd6f7e939ae4ef62b52b3c55fbe76dddecee (diff)
downloadglibc-f8baf2a2242029600beb213d3f042e7c0482e502.tar.gz
hurd: add TLS support
* 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.
Diffstat (limited to 'mach')
-rw-r--r--mach/setup-thread.c23
1 files changed, 21 insertions, 2 deletions
diff --git a/mach/setup-thread.c b/mach/setup-thread.c
index 2eeacc2c2e..6716813825 100644
--- a/mach/setup-thread.c
+++ b/mach/setup-thread.c
@@ -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)