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[/] [or1k_old/] [trunk/] [uclinux/] [uClinux-2.0.x/] [include/] [asm-alpha/] [processor.h] - Blame information for rev 1782

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/*
 * include/asm-alpha/processor.h
 *
 * Copyright (C) 1994 Linus Torvalds
 */
 
#ifndef __ASM_ALPHA_PROCESSOR_H
#define __ASM_ALPHA_PROCESSOR_H
 
/*
 * We have a 41-bit user address space: 2TB user VM.
 * Under certain circumstances (e.g. when emulating 32-bit code)
 * we may want to voluntarily limit this...
 */
#define TASK_SIZE (0x40000000000UL)
#define MAX_USER_ADDR ((current->personality&ADDR_MAX_32BIT) ? 0x100000000UL : \
        ((current->personality & ADDR_MAX_31BIT) ? 0x80000000UL : \
                                                        0x40000000000UL))
#define MMAP_SEARCH_START ((current->personality & ADDR_MAX_31BIT) ? \
                        (MAX_USER_ADDR/2) : (MAX_USER_ADDR/3))
 
 
/*
 * Bus types
 */
#define EISA_bus 1
#define EISA_bus__is_a_macro /* for versions in ksyms.c */
#define MCA_bus 0
#define MCA_bus__is_a_macro /* for versions in ksyms.c */
 
/*
 * The alpha has no problems with write protection
 */
#define wp_works_ok 1
#define wp_works_ok__is_a_macro /* for versions in ksyms.c */
 
struct thread_struct {
        /* the fields below are used by PALcode and must match struct pcb: */
        unsigned long ksp;
        unsigned long usp;
        unsigned long ptbr;
        unsigned int pcc;
        unsigned int asn;
        unsigned long unique;
        /*
         * bit  0: floating point enable
         * bit 62: performance monitor enable
         */
        unsigned long pal_flags;
        unsigned long res1, res2;
 
        /* the fields below are Linux-specific: */
        /*
         * bit 0:       perform syscall argument validation (get/set_fs)
         * bit 1..5:    IEEE_TRAP_ENABLE bits (see fpu.h)
         * bit 17..21:  IEEE_STATUS bits (see fpu.h)
         */
        unsigned long flags;
};
 
#define INIT_MMAP { &init_mm, 0xfffffc0000000000,  0xfffffc0010000000, \
        PAGE_SHARED, VM_READ | VM_WRITE | VM_EXEC }
 
#define INIT_TSS  { \
        0, 0, 0, \
        0, 0, 0, \
        0, 0, 0, \
 
}
 
#define alloc_kernel_stack()    __get_free_page(GFP_KERNEL)
#define free_kernel_stack(page) free_page((page))
 
#include <asm/ptrace.h>
 
/*
 * Return saved PC of a blocked thread.  This assumes the frame
 * pointer is the 6th saved long on the kernel stack and that the
 * saved return address is the first long in the frame.  This all
 * holds provided the thread blocked through a call to schedule() ($15
 * is the frame pointer in schedule() and $15 is saved at offset 48 by
 * entry.S:do_switch_stack).
 */
extern inline unsigned long thread_saved_pc(struct thread_struct *t)
{
        unsigned long fp;
 
        fp = ((unsigned long*)t->ksp)[6];
        return *(unsigned long*)fp;
}
 
/*
 * Do necessary setup to start up a newly executed thread.
 */
extern void start_thread(struct pt_regs *, unsigned long, unsigned long);
 
#endif /* __ASM_ALPHA_PROCESSOR_H */

Line No.	Rev	Author	Line
1	199	simons	`/*`
2			`* include/asm-alpha/processor.h`
3			`*`
4			`* Copyright (C) 1994 Linus Torvalds`
5			`*/`
6
7			`#ifndef __ASM_ALPHA_PROCESSOR_H`
8			`#define __ASM_ALPHA_PROCESSOR_H`
9
10			`/*`
11			`* We have a 41-bit user address space: 2TB user VM.`
12			`* Under certain circumstances (e.g. when emulating 32-bit code)`
13			`* we may want to voluntarily limit this...`
14			`*/`
15			`#define TASK_SIZE (0x40000000000UL)`
16			`#define MAX_USER_ADDR ((current->personality&ADDR_MAX_32BIT) ? 0x100000000UL : \`
17			`((current->personality & ADDR_MAX_31BIT) ? 0x80000000UL : \`
18			`0x40000000000UL))`
19			`#define MMAP_SEARCH_START ((current->personality & ADDR_MAX_31BIT) ? \`
20			`(MAX_USER_ADDR/2) : (MAX_USER_ADDR/3))`
21
22
23			`/*`
24			`* Bus types`
25			`*/`
26			`#define EISA_bus 1`
27			`#define EISA_bus__is_a_macro /* for versions in ksyms.c */`
28			`#define MCA_bus 0`
29			`#define MCA_bus__is_a_macro /* for versions in ksyms.c */`
30
31			`/*`
32			`* The alpha has no problems with write protection`
33			`*/`
34			`#define wp_works_ok 1`
35			`#define wp_works_ok__is_a_macro /* for versions in ksyms.c */`
36
37			`struct thread_struct {`
38			`/* the fields below are used by PALcode and must match struct pcb: */`
39			`unsigned long ksp;`
40			`unsigned long usp;`
41			`unsigned long ptbr;`
42			`unsigned int pcc;`
43			`unsigned int asn;`
44			`unsigned long unique;`
45			`/*`
46			`* bit 0: floating point enable`
47			`* bit 62: performance monitor enable`
48			`*/`
49			`unsigned long pal_flags;`
50			`unsigned long res1, res2;`
51
52			`/* the fields below are Linux-specific: */`
53			`/*`
54			`* bit 0: perform syscall argument validation (get/set_fs)`
55			`* bit 1..5: IEEE_TRAP_ENABLE bits (see fpu.h)`
56			`* bit 17..21: IEEE_STATUS bits (see fpu.h)`
57			`*/`
58			`unsigned long flags;`
59			`};`
60
61			`#define INIT_MMAP { &init_mm, 0xfffffc0000000000, 0xfffffc0010000000, \`
62			`PAGE_SHARED, VM_READ \| VM_WRITE \| VM_EXEC }`
63
64			`#define INIT_TSS { \`
65			`0, 0, 0, \`
66			`0, 0, 0, \`
67			`0, 0, 0, \`
68
69			`}`
70
71			`#define alloc_kernel_stack() __get_free_page(GFP_KERNEL)`
72			`#define free_kernel_stack(page) free_page((page))`
73
74			`#include <asm/ptrace.h>`
75
76			`/*`
77			`* Return saved PC of a blocked thread. This assumes the frame`
78			`* pointer is the 6th saved long on the kernel stack and that the`
79			`* saved return address is the first long in the frame. This all`
80			`* holds provided the thread blocked through a call to schedule() ($15`
81			`* is the frame pointer in schedule() and $15 is saved at offset 48 by`
82			`* entry.S:do_switch_stack).`
83			`*/`
84			`extern inline unsigned long thread_saved_pc(struct thread_struct *t)`
85			`{`
86			`unsigned long fp;`
87
88			`fp = ((unsigned long*)t->ksp)[6];`
89			`return (unsigned long)fp;`
90			`}`
91
92			`/*`
93			`* Do necessary setup to start up a newly executed thread.`
94			`*/`
95			`extern void start_thread(struct pt_regs *, unsigned long, unsigned long);`
96
97			`#endif /* __ASM_ALPHA_PROCESSOR_H */`

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[/] [or1k_old/] [trunk/] [uclinux/] [uClinux-2.0.x/] [include/] [asm-alpha/] [processor.h] - Blame information for rev 1782