Subversion Repositories HelenOS-historic

Rev

Rev 1160 | Rev 1399 | Go to most recent revision | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 1160 Rev 1398
Line 37... Line 37...
37 
 * Enable interrupts and return previous
 37 
 * Enable interrupts and return previous
38 
 * value of EE.
 38 
 * value of EE.
39 
 *
 39 
 *
40 
 * @return Old interrupt priority level.
 40 
 * @return Old interrupt priority level.
41 
 */
 41 
 */
42 
static inline ipl_t interrupts_enable(void) {
 42 
static inline ipl_t interrupts_enable(void)
- 
 
 43 
{
43 
    ipl_t v;
 44 
    ipl_t v;
44 
    ipl_t tmp;
 45 
    ipl_t tmp;
45 
   
 46 
   
46 
    __asm__ volatile (
 47 
    asm volatile (
47 
        "mfmsr %0\n"
 48 
        "mfmsr %0\n"
48 
        "mfmsr %1\n"
 49 
        "mfmsr %1\n"
49 
        "ori %1, %1, 1 << 15\n"
 50 
        "ori %1, %1, 1 << 15\n"
50 
        "mtmsr %1\n"
 51 
        "mtmsr %1\n"
51 
        : "=r" (v), "=r" (tmp)
 52 
        : "=r" (v), "=r" (tmp)
Line 58... Line 59...
58 
 * Disable interrupts and return previous
 59 
 * Disable interrupts and return previous
59 
 * value of EE.
 60 
 * value of EE.
60 
 *
 61 
 *
61 
 * @return Old interrupt priority level.
 62 
 * @return Old interrupt priority level.
62 
 */
 63 
 */
63 
static inline ipl_t interrupts_disable(void) {
 64 
static inline ipl_t interrupts_disable(void)
- 
 
 65 
{
64 
    ipl_t v;
 66 
    ipl_t v;
65 
    ipl_t tmp;
 67 
    ipl_t tmp;
66 
   
 68 
   
67 
    __asm__ volatile (
 69 
    asm volatile (
68 
        "mfmsr %0\n"
 70 
        "mfmsr %0\n"
69 
        "mfmsr %1\n"
 71 
        "mfmsr %1\n"
70 
        "rlwinm %1, %1, 0, 17, 15\n"
 72 
        "rlwinm %1, %1, 0, 17, 15\n"
71 
        "mtmsr %1\n"
 73 
        "mtmsr %1\n"
72 
        : "=r" (v), "=r" (tmp)
 74 
        : "=r" (v), "=r" (tmp)
Line 78... Line 80...
78 
 *
 80 
 *
79 
 * Restore EE.
 81 
 * Restore EE.
80 
 *
 82 
 *
81 
 * @param ipl Saved interrupt priority level.
 83 
 * @param ipl Saved interrupt priority level.
82 
 */
 84 
 */
83 
static inline void interrupts_restore(ipl_t ipl) {
 85 
static inline void interrupts_restore(ipl_t ipl)
- 
 
 86 
{
84 
    ipl_t tmp;
 87 
    ipl_t tmp;
85 
   
 88 
   
86 
    __asm__ volatile (
 89 
    asm volatile (
87 
        "mfmsr %1\n"
 90 
        "mfmsr %1\n"
88 
        "rlwimi  %0, %1, 0, 17, 15\n"
 91 
        "rlwimi  %0, %1, 0, 17, 15\n"
89 
        "cmpw 0, %0, %1\n"
 92 
        "cmpw 0, %0, %1\n"
90 
        "beq 0f\n"
 93 
        "beq 0f\n"
91 
        "mtmsr %0\n"
 94 
        "mtmsr %0\n"
92 
        "0:\n"
 95 
        "0:\n"
93 
        : "=r" (ipl), "=r" (tmp)
 96 
        : "=r" (ipl), "=r" (tmp)
94 
        : "0" (ipl)
 97 
        : "0" (ipl)
- 
 
 98 
        : "cr0"
95 
    );
 99 
    );
96 
}
 100 
}
97 
 
 101 
 
98 
/** Return interrupt priority level.
 102 
/** Return interrupt priority level.
99 
 *
 103 
 *
100 
 * Return EE.
 104 
 * Return EE.
101 
 *
 105 
 *
102 
 * @return Current interrupt priority level.
 106 
 * @return Current interrupt priority level.
103 
 */
 107 
 */
104 
static inline ipl_t interrupts_read(void) {
 108 
static inline ipl_t interrupts_read(void)
- 
 
 109 
{
105 
    ipl_t v;
 110 
    ipl_t v;
- 
 
 111 
   
106 
    __asm__ volatile (
 112 
    asm volatile (
107 
        "mfmsr %0\n"
 113 
        "mfmsr %0\n"
108 
        : "=r" (v)
 114 
        : "=r" (v)
109 
    );
 115 
    );
110 
    return v;
 116 
    return v;
111 
}
 117 
}
Line 118... Line 124...
118 
 */
 124 
 */
119 
static inline __address get_stack_base(void)
 125 
static inline __address get_stack_base(void)
120 
{
 126 
{
121 
    __address v;
 127 
    __address v;
122 
   
 128 
   
- 
 
 129 
    asm volatile (
- 
 
 130 
        "and %0, %%sp, %1\n"
- 
 
 131 
        : "=r" (v)
123 
    __asm__ volatile ("and %0, %%sp, %1\n" : "=r" (v) : "r" (~(STACK_SIZE-1)));
 132 
        : "r" (~(STACK_SIZE - 1))
124 
   
 133 
    );
125 
    return v;
 134 
    return v;
126 
}
 135 
}
127 
 
 136 
 
128 
static inline void cpu_sleep(void)
 137 
static inline void cpu_sleep(void)
129 
{
 138 
{
130 
}
 139 
}
131 
 
 140 
 
132 
void cpu_halt(void);
 141 
void cpu_halt(void);
133 
void asm_delay_loop(__u32 t);
 142 
void asm_delay_loop(__u32 t);
134 
 
 143 
 
- 
 
 144 
extern void userspace_asm(__address uspace_uarg, __address stack, __address entry);
- 
 
 145 
 
135 
#endif
 146 
#endif