Subversion Repositories HelenOS-historic

Rev

Rev 640 | Rev 658 | Go to most recent revision | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 640 Rev 650
Line 27... Line 27...
27 
 */
 27 
 */
28 
 
 28 
 
29 
#ifndef __sparc64_ASM_H__
 29 
#ifndef __sparc64_ASM_H__
30 
#define __sparc64_ASM_H__
 30 
#define __sparc64_ASM_H__
31 
 
 31 
 
- 
 
 32 
#include <typedefs.h>
32 
#include <arch/types.h>
 33 
#include <arch/types.h>
- 
 
 34 
#include <arch/register.h>
33 
#include <config.h>
 35 
#include <config.h>
34 
 
 36 
 
- 
 
 37 
/** Read Processor State register.
- 
 
 38 
 *
- 
 
 39 
 * @return Value of PSTATE register.
- 
 
 40 
 */
- 
 
 41 
static inline __u64 pstate_read(void)
- 
 
 42 
{
- 
 
 43 
    __u64 v;
- 
 
 44 
   
- 
 
 45 
    __asm__ volatile ("rdpr %%pstate, %0\n" : "=r" (v));
- 
 
 46 
   
- 
 
 47 
    return v;
- 
 
 48 
}
- 
 
 49 
 
- 
 
 50 
/** Write Processor State register.
- 
 
 51 
 *
- 
 
 52 
 * @param New value of PSTATE register.
- 
 
 53 
 */
- 
 
 54 
static inline void pstate_write(__u64 v)
- 
 
 55 
{
- 
 
 56 
    __asm__ volatile ("wrpr %0, %1, %%pstate\n" : : "r" (v), "i" (0));
- 
 
 57 
}
- 
 
 58 
 
- 
 
 59 
 
35 
/** Enable interrupts.
 60 
/** Enable interrupts.
36 
 *
 61 
 *
37 
 * Enable interrupts and return previous
 62 
 * Enable interrupts and return previous
38 
 * value of IPL.
 63 
 * value of IPL.
39 
 *
 64 
 *
40 
 * @return Old interrupt priority level.
 65 
 * @return Old interrupt priority level.
41 
 */
 66 
 */
42 
static inline ipl_t interrupts_enable(void) {
 67 
static inline ipl_t interrupts_enable(void) {
- 
 
 68 
    pstate_reg_t pstate;
- 
 
 69 
    __u64 value;
- 
 
 70 
   
- 
 
 71 
    value = pstate_read();
- 
 
 72 
    pstate.value = value;
- 
 
 73 
    pstate.ie = true;
- 
 
 74 
    pstate_write(pstate.value);
- 
 
 75 
   
- 
 
 76 
    return (ipl_t) value;
43 
}
 77 
}
44 
 
 78 
 
45 
/** Disable interrupts.
 79 
/** Disable interrupts.
46 
 *
 80 
 *
47 
 * Disable interrupts and return previous
 81 
 * Disable interrupts and return previous
48 
 * value of IPL.
 82 
 * value of IPL.
49 
 *
 83 
 *
50 
 * @return Old interrupt priority level.
 84 
 * @return Old interrupt priority level.
51 
 */
 85 
 */
52 
static inline ipl_t interrupts_disable(void) {
 86 
static inline ipl_t interrupts_disable(void) {
- 
 
 87 
    pstate_reg_t pstate;
- 
 
 88 
    __u64 value;
- 
 
 89 
   
- 
 
 90 
    value = pstate_read();
- 
 
 91 
    pstate.value = value;
- 
 
 92 
    pstate.ie = false;
- 
 
 93 
    pstate_write(pstate.value);
- 
 
 94 
   
- 
 
 95 
    return (ipl_t) value;
53 
}
 96 
}
54 
 
 97 
 
55 
/** Restore interrupt priority level.
 98 
/** Restore interrupt priority level.
56 
 *
 99 
 *
57 
 * Restore IPL.
 100 
 * Restore IPL.
58 
 *
 101 
 *
59 
 * @param ipl Saved interrupt priority level.
 102 
 * @param ipl Saved interrupt priority level.
60 
 */
 103 
 */
61 
static inline void interrupts_restore(ipl_t ipl) {
 104 
static inline void interrupts_restore(ipl_t ipl) {
- 
 
 105 
    pstate_reg_t pstate;
- 
 
 106 
   
- 
 
 107 
    pstate.value = pstate_read();
- 
 
 108 
    pstate.ie = ((pstate_reg_t) ipl).ie;
- 
 
 109 
    pstate_write(pstate.value);
62 
}
 110 
}
63 
 
 111 
 
64 
/** Return interrupt priority level.
 112 
/** Return interrupt priority level.
65 
 *
 113 
 *
66 
 * Return IPL.
 114 
 * Return IPL.
67 
 *
 115 
 *
68 
 * @return Current interrupt priority level.
 116 
 * @return Current interrupt priority level.
69 
 */
 117 
 */
70 
static inline ipl_t interrupts_read(void) {
 118 
static inline ipl_t interrupts_read(void) {
- 
 
 119 
    return (ipl_t) pstate_read();
71 
}
 120 
}
72 
 
 121 
 
73 
/** Return base address of current stack.
 122 
/** Return base address of current stack.
74 
 *
 123 
 *
75 
 * Return the base address of the current stack.
 124 
 * Return the base address of the current stack.
Line 78... Line 127...
78 
 */
 127 
 */
79 
static inline __address get_stack_base(void)
 128 
static inline __address get_stack_base(void)
80 
{
 129 
{
81 
    __address v;
 130 
    __address v;
82 
   
 131 
   
83 
    __asm__ volatile ("and %%o6, %1, %0\n" : "=r" (v) : "r" (~(STACK_SIZE-1)));
 132 
    __asm__ volatile ("and %%sp, %1, %0\n" : "=r" (v) : "r" (~(STACK_SIZE-1)));
84 
   
 133 
   
85 
    return v;
 134 
    return v;
86 
}
 135 
}
87 
 
 136 
 
88 
/** Read Version Register.
 137 
/** Read Version Register.