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[/] [or1k/] [trunk/] [rc203soc/] [sw/] [uClinux/] [include/] [asm-armnommu/] [proc-armo/] [processor.h] - Blame information for rev 1777

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/*
 * linux/include/asm-arm/proc-arm2/processor.h
 *
 * Copyright (c) 1996 Russell King.
 *
 * Changelog:
 *  27-06-1996  RMK     Created
 *  10-10-1996  RMK     Brought up to date with SA110
 *  26-09-1996  RMK     Added 'EXTRA_THREAD_STRUCT*'
 *  28-09-1996  RMK     Moved start_thread into the processor dependencies
 */
#ifndef __ASM_PROC_PROCESSOR_H
#define __ASM_PROC_PROCESSOR_H
 
#ifdef __KERNEL__
 
#include <asm/assembler.h>
#include <linux/string.h>
 
#ifndef GFP_KERNEL
#define GFP_KERNEL 0x03
#endif
void * kmalloc(unsigned int size, int priority);
void kfree(void * obj);
 
#define KERNEL_STACK_SIZE 4096
 
extern __inline__ unsigned long alloc_kernel_stack(void)
{
    void *stk;
 
    stk = kmalloc (KERNEL_STACK_SIZE, GFP_KERNEL);
    if (stk)
        memzero (stk, KERNEL_STACK_SIZE);
    return (unsigned long)stk;
}
 
extern __inline__ void free_kernel_stack(unsigned long stk)
{
    if (stk)
        kfree((void *)stk);
}
 
/*
 * on arm2,3 wp does not work
 */
#define wp_works_ok 0
#define wp_works_ok__is_a_macro /* for versions in ksyms.c */
 
struct context_save_struct {
        unsigned long r4;
        unsigned long r5;
        unsigned long r6;
        unsigned long r7;
        unsigned long r8;
        unsigned long r9;
        unsigned long fp;
        unsigned long pc;
};
 
#define EXTRA_THREAD_STRUCT                     \
        struct context_save_struct *save;       \
        unsigned long   memmap;                 \
        unsigned long   memcmap[256];
 
#define EXTRA_THREAD_STRUCT_INIT                \
        0,                                       \
        (unsigned long) swapper_pg_dir,         \
        { 0, }
 
DECLARE_THREAD_STRUCT;
 
/*
 * Return saved PC of a blocked thread.
 */
extern __inline__ unsigned long thread_saved_pc (struct thread_struct *t)
{
        if (t->save)
                return t->save->pc & PCMASK;
        else
                return 0;
}
 
extern __inline__ unsigned long get_css_fp (struct thread_struct *t)
{
        if (t->save)
                return t->save->fp;
        else
                return 0;
}
 
asmlinkage void ret_from_sys_call(void) __asm__("_ret_from_sys_call");
 
extern __inline__ void copy_thread_css (struct context_save_struct *save)
{
        save->r4 =
        save->r5 =
        save->r6 =
        save->r7 =
        save->r8 =
        save->r9 =
        save->fp = 0;
        save->pc = ((unsigned long)ret_from_sys_call) | SVC26_MODE;
}
 
/*
 * A hack to get round the problem of declaring current &
 * flush_tlb_mm
 */
#define start_thread(regs,pc,sp) start_thread_setup(regs, pc, sp); flush_tlb_mm(current->mm)
 
extern __inline__ void start_thread_setup(struct pt_regs * regs, unsigned long pc, unsigned long sp)
{
        unsigned long *stack = (unsigned long *)sp;
 
        /* Initialise all registers to zero */
        memzero(regs->uregs, sizeof (regs->uregs));
        regs->ARM_pc = pc;              /* pc */
        regs->ARM_sp = sp;              /* sp */
        regs->ARM_r2 = stack[2];        /* r2 (envp) */
        regs->ARM_r1 = stack[1];        /* r1 (argv) */
        regs->ARM_r0 = stack[0]; /* r0 (argc) */
}
 
#endif
 
#endif

Line No.	Rev	Author	Line
1	1633	jcastillo	`/*`
2			`* linux/include/asm-arm/proc-arm2/processor.h`
3			`*`
4			`* Copyright (c) 1996 Russell King.`
5			`*`
6			`* Changelog:`
7			`* 27-06-1996 RMK Created`
8			`* 10-10-1996 RMK Brought up to date with SA110`
9			`* 26-09-1996 RMK Added 'EXTRA_THREAD_STRUCT*'`
10			`* 28-09-1996 RMK Moved start_thread into the processor dependencies`
11			`*/`
12			`#ifndef __ASM_PROC_PROCESSOR_H`
13			`#define __ASM_PROC_PROCESSOR_H`
14
15			`#ifdef __KERNEL__`
16
17			`#include <asm/assembler.h>`
18			`#include <linux/string.h>`
19
20			`#ifndef GFP_KERNEL`
21			`#define GFP_KERNEL 0x03`
22			`#endif`
23			`void * kmalloc(unsigned int size, int priority);`
24			`void kfree(void * obj);`
25
26			`#define KERNEL_STACK_SIZE 4096`
27
28			`extern __inline__ unsigned long alloc_kernel_stack(void)`
29			`{`
30			`void *stk;`
31
32			`stk = kmalloc (KERNEL_STACK_SIZE, GFP_KERNEL);`
33			`if (stk)`
34			`memzero (stk, KERNEL_STACK_SIZE);`
35			`return (unsigned long)stk;`
36			`}`
37
38			`extern __inline__ void free_kernel_stack(unsigned long stk)`
39			`{`
40			`if (stk)`
41			`kfree((void *)stk);`
42			`}`
43
44			`/*`
45			`* on arm2,3 wp does not work`
46			`*/`
47			`#define wp_works_ok 0`
48			`#define wp_works_ok__is_a_macro /* for versions in ksyms.c */`
49
50			`struct context_save_struct {`
51			`unsigned long r4;`
52			`unsigned long r5;`
53			`unsigned long r6;`
54			`unsigned long r7;`
55			`unsigned long r8;`
56			`unsigned long r9;`
57			`unsigned long fp;`
58			`unsigned long pc;`
59			`};`
60
61			`#define EXTRA_THREAD_STRUCT \`
62			`struct context_save_struct *save; \`
63			`unsigned long memmap; \`
64			`unsigned long memcmap[256];`
65
66			`#define EXTRA_THREAD_STRUCT_INIT \`
67			`0, \`
68			`(unsigned long) swapper_pg_dir, \`
69			`{ 0, }`
70
71			`DECLARE_THREAD_STRUCT;`
72
73			`/*`
74			`* Return saved PC of a blocked thread.`
75			`*/`
76			`extern __inline__ unsigned long thread_saved_pc (struct thread_struct *t)`
77			`{`
78			`if (t->save)`
79			`return t->save->pc & PCMASK;`
80			`else`
81			`return 0;`
82			`}`
83
84			`extern __inline__ unsigned long get_css_fp (struct thread_struct *t)`
85			`{`
86			`if (t->save)`
87			`return t->save->fp;`
88			`else`
89			`return 0;`
90			`}`
91
92			`asmlinkage void ret_from_sys_call(void) __asm__("_ret_from_sys_call");`
93
94			`extern __inline__ void copy_thread_css (struct context_save_struct *save)`
95			`{`
96			`save->r4 =`
97			`save->r5 =`
98			`save->r6 =`
99			`save->r7 =`
100			`save->r8 =`
101			`save->r9 =`
102			`save->fp = 0;`
103			`save->pc = ((unsigned long)ret_from_sys_call) \| SVC26_MODE;`
104			`}`
105
106			`/*`
107			`* A hack to get round the problem of declaring current &`
108			`* flush_tlb_mm`
109			`*/`
110			`#define start_thread(regs,pc,sp) start_thread_setup(regs, pc, sp); flush_tlb_mm(current->mm)`
111
112			`extern __inline__ void start_thread_setup(struct pt_regs * regs, unsigned long pc, unsigned long sp)`
113			`{`
114			`unsigned long stack = (unsigned long )sp;`
115
116			`/* Initialise all registers to zero */`
117			`memzero(regs->uregs, sizeof (regs->uregs));`
118			`regs->ARM_pc = pc; /* pc */`
119			`regs->ARM_sp = sp; /* sp */`
120			`regs->ARM_r2 = stack[2]; /* r2 (envp) */`
121			`regs->ARM_r1 = stack[1]; /* r1 (argv) */`
122			`regs->ARM_r0 = stack[0]; /* r0 (argc) */`
123			`}`
124
125			`#endif`
126
127			`#endif`

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[/] [or1k/] [trunk/] [rc203soc/] [sw/] [uClinux/] [include/] [asm-armnommu/] [proc-armo/] [processor.h] - Blame information for rev 1777