Subversion Repositories HelenOS-historic

Rev

Rev 38 | Rev 139 | Go to most recent revision | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 38 Rev 115
Line 35... Line 35...
35 
#include <synch/spinlock.h>
 35 
#include <synch/spinlock.h>
36 
 
 36 
 
37 
extern __u32 interrupt_handler_size;
 37 
extern __u32 interrupt_handler_size;
38 
 
 38 
 
39 
extern void paging_on(void);
 39 
extern void paging_on(void);
40 
extern __address cpu_read_dba(void);
 - 
 
41 
extern void cpu_write_dba(__address dba);
 - 
 
42 
 
 - 
 
43 
extern __address cpu_read_cr2(void);
 - 
 
44 
 
 40 
 
45 
extern void interrupt_handlers(void);
 41 
extern void interrupt_handlers(void);
46 
 
 42 
 
47 
extern __u8 inb(int port);
 43 
extern __u8 inb(int port);
48 
extern __u16 inw(int port);
 44 
extern __u16 inw(int port);
Line 52... Line 48...
52 
extern void outw(int port, __u16 w);
 48 
extern void outw(int port, __u16 w);
53 
extern void outl(int port, __u32 l);
 49 
extern void outl(int port, __u32 l);
54 
 
 50 
 
55 
extern void enable_l_apic_in_msr(void);
 51 
extern void enable_l_apic_in_msr(void);
56 
 
 52 
 
- 
 
 53 
/** Halt CPU
- 
 
 54 
 *
- 
 
 55 
 * Halt the current CPU until interrupt event.
- 
 
 56 
 */
57 
extern void halt_cpu(void);
 57 
static inline void cpu_halt(void) { __asm__("hlt"); };
58 
extern void cpu_sleep(void);
 58 
static inline void cpu_sleep(void) { __asm__("hlt"); };
59 
 
 59 
 
- 
 
 60 
/** Read CR2
- 
 
 61 
 *
- 
 
 62 
 * Return value in CR2
- 
 
 63 
 *
- 
 
 64 
 * @return Value read.
- 
 
 65 
 */
- 
 
 66 
static inline __u32 read_cr2(void) { __u32 v; __asm__ volatile ("movl %%cr2,%0" : "=r" (v)); return v; }
- 
 
 67 
 
- 
 
 68 
/** Write CR3
- 
 
 69 
 *
- 
 
 70 
 * Write value to CR3.
- 
 
 71 
 *
- 
 
 72 
 * @param v Value to be written.
- 
 
 73 
 */
60 
static inline void write_dr0(__u32 v);
 74 
static inline void write_cr3(__u32 v) { __asm__ volatile ("movl %0,%%cr3\n" : : "r" (v)); }
- 
 
 75 
 
- 
 
 76 
/** Read CR3
- 
 
 77 
 *
- 
 
 78 
 * Return value in CR3
- 
 
 79 
 *
61 
static inline __u32 read_dr0(void);
 80 
 * @return Value read.
- 
 
 81 
 */
- 
 
 82 
static inline __u32 read_cr3(void) { __u32 v; __asm__ volatile ("movl %%cr3,%0" : "=r" (v)); return v; }
62 
 
 83 
 
- 
 
 84 
/** Write DR0
- 
 
 85 
 *
- 
 
 86 
 * Write value to DR0.
- 
 
 87 
 *
- 
 
 88 
 * @param v Value to be written.
- 
 
 89 
 */
63 
inline void write_dr0(__u32 v) { __asm__ volatile ("movl %0,%%dr0\n" : : "r" (v)); }
 90 
static inline void write_dr0(__u32 v) { __asm__ volatile ("movl %0,%%dr0\n" : : "r" (v)); }
- 
 
 91 
 
- 
 
 92 
/** Read DR0
- 
 
 93 
 *
- 
 
 94 
 * Return value in DR0
- 
 
 95 
 *
- 
 
 96 
 * @return Value read.
- 
 
 97 
 */
64 
inline __u32 read_dr0(void) { __u32 v; __asm__ volatile ("movl %%dr0,%0" : "=r" (v)); return v; }
 98 
static inline __u32 read_dr0(void) { __u32 v; __asm__ volatile ("movl %%dr0,%0" : "=r" (v)); return v; }
- 
 
 99 
 
- 
 
 100 
/** Set priority level low
- 
 
 101 
 *
- 
 
 102 
 * Enable interrupts and return previous
- 
 
 103 
 * value of EFLAGS.
- 
 
 104 
 */
- 
 
 105 
static inline pri_t cpu_priority_low(void) {
- 
 
 106 
    pri_t v;
- 
 
 107 
    __asm__ volatile (
- 
 
 108 
        "pushf\n"
- 
 
 109 
        "popl %0\n"
- 
 
 110 
        "sti\n"
- 
 
 111 
        : "=r" (v)
- 
 
 112 
    );
- 
 
 113 
    return v;
- 
 
 114 
}
- 
 
 115 
 
- 
 
 116 
/** Set priority level high
- 
 
 117 
 *
- 
 
 118 
 * Disable interrupts and return previous
- 
 
 119 
 * value of EFLAGS.
- 
 
 120 
 */
- 
 
 121 
static inline pri_t cpu_priority_high(void) {
- 
 
 122 
    pri_t v;
- 
 
 123 
    __asm__ volatile (
- 
 
 124 
        "pushf\n"
- 
 
 125 
        "popl %0\n"
- 
 
 126 
        "cli\n"
- 
 
 127 
        : "=r" (v)
- 
 
 128 
    );
- 
 
 129 
    return v;
- 
 
 130 
}
- 
 
 131 
 
- 
 
 132 
/** Restore priority level
- 
 
 133 
 *
- 
 
 134 
 * Restore EFLAGS.
- 
 
 135 
 */
- 
 
 136 
static inline void cpu_priority_restore(pri_t pri) {
- 
 
 137 
    __asm__ volatile (
- 
 
 138 
        "pushl %0\n"
- 
 
 139 
        "popf\n"
- 
 
 140 
        : : "r" (pri)
- 
 
 141 
    );
- 
 
 142 
}
- 
 
 143 
 
- 
 
 144 
/** Return raw priority level
- 
 
 145 
 *
- 
 
 146 
 * Return EFLAFS.
- 
 
 147 
 */
- 
 
 148 
static inline pri_t cpu_priority_read(void) {
- 
 
 149 
    pri_t v;
- 
 
 150 
    __asm__ volatile (
- 
 
 151 
        "pushf\n"
- 
 
 152 
        "popl %0\n"
- 
 
 153 
        : "=r" (v)
- 
 
 154 
    );
- 
 
 155 
    return v;
- 
 
 156 
}
65 
 
 157 
 
66 
#endif
 158 
#endif