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Added a private tls.h file with definitions for the reserved TLS slots. 

Renamed i386_set_kstack() to i386_set_tss_and_kstack(), because that's what
it does.
Added a new function arch_thread_init_tls() which must be called after
having allocated the TLS area.
Renamed arch_thread_initialize_kthread_stack() to arch_thread_init_kthread_stack()
to be more consistent.
Changed the parameters for arch_thread_enter_uspace() - it now gets a pointer
to the thread structure and takes the user stack pointer from there (which
might also be architectural different).


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@2379 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler 2003-01-07 09:17:31 +00:00
parent 1f6480576d
commit 074a16b53e
4 changed files with 36 additions and 8 deletions
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12
headers/private/kernel/arch/thread.h
View File

@ -2,17 +2,18 @@
** Copyright 2001-2002, Travis Geiselbrecht. All rights reserved.
** Distributed under the terms of the NewOS License.
*/
#ifndef _NEWOS_KERNEL_ARCH_THREAD_H
#define _NEWOS_KERNEL_ARCH_THREAD_H
#ifndef _KERNEL_ARCH_THREAD_H
#define _KERNEL_ARCH_THREAD_H
#include <thread.h>
int arch_team_init_team_struct(struct team *t, bool kernel);
int arch_thread_init_thread_struct(struct thread *t);
void arch_thread_init_tls(struct thread *thread);
void arch_thread_context_switch(struct thread *t_from, struct thread *t_to);
int arch_thread_initialize_kthread_stack(struct thread *t, int (*start_func)(void), void (*entry_func)(void), void (*exit_func)(void));
int arch_thread_init_kthread_stack(struct thread *t, int (*start_func)(void), void (*entry_func)(void), void (*exit_func)(void));
void arch_thread_dump_info(void *info);
void arch_thread_enter_uspace(addr entry, void *args, addr ustack_top);
void arch_thread_enter_uspace(struct thread *t, addr entry, void *args);
void arch_thread_switch_kstack_and_call(struct thread *t, addr new_kstack, void (*func)(void *), void *arg);
//struct thread *arch_thread_get_current_thread(void);
@ -25,5 +26,4 @@ void arch_check_syscall_restart(struct thread *t);
// for any inline overrides
#include <arch_thread.h>
#endif
#endif /* _KERNEL_ARCH_THREAD_H */

2
headers/private/kernel/arch/x86/arch_cpu.h
View File

@ -91,7 +91,7 @@ struct iframe {
void setup_system_time(unsigned int cv_factor);
void i386_context_switch(struct arch_thread *old_state, struct arch_thread *new_state, addr new_pgdir);
void i386_enter_uspace(addr entry, void *args, addr ustack_top);
void i386_set_kstack(addr kstack);
void i386_set_tss_and_kstack(addr kstack);
void i386_switch_stack_and_call(addr stack, void (*func)(void *), void *arg);
void i386_swap_pgdir(addr new_pgdir);
void i386_fsave(void *fpu_state);

2
headers/private/kernel/arch/x86/descriptors.h
View File

@ -94,7 +94,7 @@ set_segment_descriptor(struct segment_descriptor *desc, addr base, uint32 limit,
desc->present = 1;
desc->granularity = 1; // 4 GB size (in page size steps)
desc->available = 0; // system available bit is currently not used
desc->d_b = 1;
desc->d_b = 1; // 32-bit code
desc->zero = 0;
}

28
headers/private/kernel/tls.h Normal file
View File

@ -0,0 +1,28 @@
/*
** Copyright 2003, Axel Dörfler, axeld@pinc-software.de. All rights reserved.
** Distributed under the terms of the OpenBeOS License.
*/
#ifndef _KERNEL_TLS_H
#define _KERNEL_TLS_H
#include <support/TLS.h>
#define TLS_SIZE (TLS_MAX_KEYS * sizeof(void *))
enum {
TLS_BASE_ADDRESS_SLOT = 0,
// contains the address of the local storage space
TLS_THREAD_ID_SLOT,
TLS_ERRNO_SLOT,
// Note: these entries can safely be changed between
// releases; 3rd party code always calls tls_allocate()
// to get a free slot
TLS_FIRST_FREE_SLOT
// the first free slot for user allocations
};
#endif /* _KERNEL_TLS_H */