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[/] [or1k_old/] [trunk/] [rc203soc/] [sw/] [uClinux/] [include/] [asm-armnommu/] [proc-trio/] [system.h] - Blame information for rev 1765

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/*
 * linux/include/asm-arm/proc-armv/system.h
 *
 * Copyright (C) 1996 Russell King
 */
 
#ifndef __ASM_PROC_SYSTEM_H
#define __ASM_PROC_SYSTEM_H
 
extern const char xchg_str[];
 
extern __inline__ unsigned long __xchg(unsigned long x, volatile void *ptr, int size)
{
        switch (size) {
                case 1: __asm__ __volatile__ ("swpb %0, %1, [%2]" : "=r" (x) : "r" (x), "r" (ptr) : "memory");
                        break;
                case 2: abort ();
                case 4: __asm__ __volatile__ ("swp %0, %1, [%2]" : "=r" (x) : "r" (x), "r" (ptr) : "memory");
                        break;
                default: arm_invalidptr(xchg_str, size);
        }
        return x;
}
 
/*
 * This processor does not need anything special before reset,
 * but RPC may do...
 */
extern __inline__ void proc_hard_reset(void)
{
}
 
/*
 * We can wait for an interrupt...
 */
#if 0
#define proc_idle()                     \
        do {                            \
        __asm__ __volatile__(           \
"       mcr     p15, 0, %0, c15, c8, 2" \
          : : "r" (0));                  \
        } while (0)
#else
#define proc_idle()
#endif
/*
 * A couple of speedups for the ARM
 */
 
/*
 * Save the current interrupt enable state & disable IRQs
 */
#define save_flags_cli(x)               \
        do {                            \
          unsigned long temp;           \
          __asm__ __volatile__(         \
        "mrs    %1, cpsr\n"             \
"       and     %0, %1, #192\n"         \
"       orr     %1, %1, #128\n"         \
"       msr     cpsr, %1"               \
          : "=r" (x), "=r" (temp)       \
          :                             \
          : "memory");                  \
        } while (0)
 
/*
 * Enable IRQs
 */
#define sti()                           \
        do {                            \
          unsigned long temp;           \
          __asm__ __volatile__(         \
        "mrs    %0, cpsr\n"             \
"       bic     %0, %0, #128\n"         \
"       msr     cpsr, %0"               \
          : "=r" (temp)                 \
          :                             \
          : "memory");                  \
        } while(0)
 
/*
 * Disable IRQs
 */
#define cli()                           \
        do {                            \
          unsigned long temp;           \
          __asm__ __volatile__(         \
        "mrs    %0, cpsr\n"             \
"       orr     %0, %0, #128\n"         \
"       msr     cpsr, %0"               \
          : "=r" (temp)                 \
          :                             \
          : "memory");                  \
        } while(0)
 
/*
 * save current IRQ & FIQ state
 */
#define save_flags(x)                   \
        do {                            \
          __asm__ __volatile__(         \
        "mrs    %0, cpsr\n"             \
"       and     %0, %0, #192"           \
          : "=r" (x));                  \
        } while (0)
 
/*
 * restore saved IRQ & FIQ state
 */
#define restore_flags(x)                \
        do {                            \
          unsigned long temp;           \
          __asm__ __volatile__(         \
        "mrs    %0, cpsr\n"             \
"       bic     %0, %0, #192\n"         \
"       orr     %0, %0, %1\n"           \
"       msr     cpsr, %0"               \
          : "=r" (temp)                 \
          : "r" (x)                     \
          : "memory");                  \
        } while (0)
 
#endif

Line No.	Rev	Author	Line
1	1633	jcastillo	`/*`
2			`* linux/include/asm-arm/proc-armv/system.h`
3			`*`
4			`* Copyright (C) 1996 Russell King`
5			`*/`
6
7			`#ifndef __ASM_PROC_SYSTEM_H`
8			`#define __ASM_PROC_SYSTEM_H`
9
10			`extern const char xchg_str[];`
11
12			`extern __inline__ unsigned long __xchg(unsigned long x, volatile void *ptr, int size)`
13			`{`
14			`switch (size) {`
15			`case 1: __asm__ __volatile__ ("swpb %0, %1, [%2]" : "=r" (x) : "r" (x), "r" (ptr) : "memory");`
16			`break;`
17			`case 2: abort ();`
18			`case 4: __asm__ __volatile__ ("swp %0, %1, [%2]" : "=r" (x) : "r" (x), "r" (ptr) : "memory");`
19			`break;`
20			`default: arm_invalidptr(xchg_str, size);`
21			`}`
22			`return x;`
23			`}`
24
25			`/*`
26			`* This processor does not need anything special before reset,`
27			`* but RPC may do...`
28			`*/`
29			`extern __inline__ void proc_hard_reset(void)`
30			`{`
31			`}`
32
33			`/*`
34			`* We can wait for an interrupt...`
35			`*/`
36			`#if 0`
37			`#define proc_idle() \`
38			`do { \`
39			`__asm__ __volatile__( \`
40			`" mcr p15, 0, %0, c15, c8, 2" \`
41			`: : "r" (0)); \`
42			`} while (0)`
43			`#else`
44			`#define proc_idle()`
45			`#endif`
46			`/*`
47			`* A couple of speedups for the ARM`
48			`*/`
49
50			`/*`
51			`* Save the current interrupt enable state & disable IRQs`
52			`*/`
53			`#define save_flags_cli(x) \`
54			`do { \`
55			`unsigned long temp; \`
56			`__asm__ __volatile__( \`
57			`"mrs %1, cpsr\n" \`
58			`" and %0, %1, #192\n" \`
59			`" orr %1, %1, #128\n" \`
60			`" msr cpsr, %1" \`
61			`: "=r" (x), "=r" (temp) \`
62			`: \`
63			`: "memory"); \`
64			`} while (0)`
65
66			`/*`
67			`* Enable IRQs`
68			`*/`
69			`#define sti() \`
70			`do { \`
71			`unsigned long temp; \`
72			`__asm__ __volatile__( \`
73			`"mrs %0, cpsr\n" \`
74			`" bic %0, %0, #128\n" \`
75			`" msr cpsr, %0" \`
76			`: "=r" (temp) \`
77			`: \`
78			`: "memory"); \`
79			`} while(0)`
80
81			`/*`
82			`* Disable IRQs`
83			`*/`
84			`#define cli() \`
85			`do { \`
86			`unsigned long temp; \`
87			`__asm__ __volatile__( \`
88			`"mrs %0, cpsr\n" \`
89			`" orr %0, %0, #128\n" \`
90			`" msr cpsr, %0" \`
91			`: "=r" (temp) \`
92			`: \`
93			`: "memory"); \`
94			`} while(0)`
95
96			`/*`
97			`* save current IRQ & FIQ state`
98			`*/`
99			`#define save_flags(x) \`
100			`do { \`
101			`__asm__ __volatile__( \`
102			`"mrs %0, cpsr\n" \`
103			`" and %0, %0, #192" \`
104			`: "=r" (x)); \`
105			`} while (0)`
106
107			`/*`
108			`* restore saved IRQ & FIQ state`
109			`*/`
110			`#define restore_flags(x) \`
111			`do { \`
112			`unsigned long temp; \`
113			`__asm__ __volatile__( \`
114			`"mrs %0, cpsr\n" \`
115			`" bic %0, %0, #192\n" \`
116			`" orr %0, %0, %1\n" \`
117			`" msr cpsr, %0" \`
118			`: "=r" (temp) \`
119			`: "r" (x) \`
120			`: "memory"); \`
121			`} while (0)`
122
123			`#endif`

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[/] [or1k_old/] [trunk/] [rc203soc/] [sw/] [uClinux/] [include/] [asm-armnommu/] [proc-trio/] [system.h] - Blame information for rev 1765