1/*
 2 * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
 3 * Licensed under the GPL
 4 */
 5
 6#ifndef __UM_PROCESSOR_I386_H
 7#define __UM_PROCESSOR_I386_H
 8
 9#include <linux/string.h>
10#include <asm/segment.h>
11#include <asm/ldt.h>
12
13extern int host_has_cmov;
14
15struct uml_tls_struct {
16	struct user_desc tls;
17	unsigned flushed:1;
18	unsigned present:1;
19};
20
21struct arch_thread {
22	struct uml_tls_struct tls_array[GDT_ENTRY_TLS_ENTRIES];
23	unsigned long debugregs[8];
24	int debugregs_seq;
25	struct faultinfo faultinfo;
26};
27
28#define INIT_ARCH_THREAD { \
29	.tls_array  		= { [ 0 ... GDT_ENTRY_TLS_ENTRIES - 1 ] = \
30				    { .present = 0, .flushed = 0 } }, \
31	.debugregs  		= { [ 0 ... 7 ] = 0 }, \
32	.debugregs_seq		= 0, \
33	.faultinfo		= { 0, 0, 0 } \
34}
35
36#define STACKSLOTS_PER_LINE 8
37
38static inline void arch_flush_thread(struct arch_thread *thread)
39{
40	/* Clear any TLS still hanging */
41	memset(&thread->tls_array, 0, sizeof(thread->tls_array));
42}
43
44static inline void arch_copy_thread(struct arch_thread *from,
45                                    struct arch_thread *to)
46{
47        memcpy(&to->tls_array, &from->tls_array, sizeof(from->tls_array));
48}
49
50#define current_sp() ({ void *sp; __asm__("movl %%esp, %0" : "=r" (sp) : ); sp; })
51#define current_bp() ({ unsigned long bp; __asm__("movl %%ebp, %0" : "=r" (bp) : ); bp; })
 
 
 
 
 
52
53#endif

 1/*
 2 * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
 3 * Licensed under the GPL
 4 */
 5
 6#ifndef __UM_PROCESSOR_I386_H
 7#define __UM_PROCESSOR_I386_H
 8
 9#include <linux/string.h>
10#include <asm/segment.h>
11#include <asm/ldt.h>
12
13extern int host_has_cmov;
14
15struct uml_tls_struct {
16	struct user_desc tls;
17	unsigned flushed:1;
18	unsigned present:1;
19};
20
21struct arch_thread {
22	struct uml_tls_struct tls_array[GDT_ENTRY_TLS_ENTRIES];
23	unsigned long debugregs[8];
24	int debugregs_seq;
25	struct faultinfo faultinfo;
26};
27
28#define INIT_ARCH_THREAD { \
29	.tls_array  		= { [ 0 ... GDT_ENTRY_TLS_ENTRIES - 1 ] = \
30				    { .present = 0, .flushed = 0 } }, \
31	.debugregs  		= { [ 0 ... 7 ] = 0 }, \
32	.debugregs_seq		= 0, \
33	.faultinfo		= { 0, 0, 0 } \
34}
35
 
 
36static inline void arch_flush_thread(struct arch_thread *thread)
37{
38	/* Clear any TLS still hanging */
39	memset(&thread->tls_array, 0, sizeof(thread->tls_array));
40}
41
42static inline void arch_copy_thread(struct arch_thread *from,
43                                    struct arch_thread *to)
44{
45        memcpy(&to->tls_array, &from->tls_array, sizeof(from->tls_array));
46}
47
48/*
49 * Default implementation of macro that returns current
50 * instruction pointer ("program counter"). Stolen
51 * from asm-i386/processor.h
52 */
53#define current_text_addr() \
54	({ void *pc; __asm__("movl $1f,%0\n1:":"=g" (pc)); pc; })
55
56#endif