Glauber de Oliveira Costa | d895422 | 2008-01-30 13:31:08 +0100 | [diff] [blame] | 1 | #ifndef _ASM_X86_SYSTEM_H_ |
| 2 | #define _ASM_X86_SYSTEM_H_ |
| 3 | |
| 4 | #include <asm/asm.h> |
| 5 | |
Thomas Gleixner | 96a388d | 2007-10-11 11:20:03 +0200 | [diff] [blame] | 6 | #ifdef CONFIG_X86_32 |
| 7 | # include "system_32.h" |
| 8 | #else |
| 9 | # include "system_64.h" |
| 10 | #endif |
Glauber de Oliveira Costa | d895422 | 2008-01-30 13:31:08 +0100 | [diff] [blame] | 11 | |
| 12 | #ifdef __KERNEL__ |
| 13 | #define _set_base(addr, base) do { unsigned long __pr; \ |
| 14 | __asm__ __volatile__ ("movw %%dx,%1\n\t" \ |
| 15 | "rorl $16,%%edx\n\t" \ |
| 16 | "movb %%dl,%2\n\t" \ |
| 17 | "movb %%dh,%3" \ |
| 18 | :"=&d" (__pr) \ |
| 19 | :"m" (*((addr)+2)), \ |
| 20 | "m" (*((addr)+4)), \ |
| 21 | "m" (*((addr)+7)), \ |
| 22 | "0" (base) \ |
| 23 | ); } while (0) |
| 24 | |
| 25 | #define _set_limit(addr, limit) do { unsigned long __lr; \ |
| 26 | __asm__ __volatile__ ("movw %%dx,%1\n\t" \ |
| 27 | "rorl $16,%%edx\n\t" \ |
| 28 | "movb %2,%%dh\n\t" \ |
| 29 | "andb $0xf0,%%dh\n\t" \ |
| 30 | "orb %%dh,%%dl\n\t" \ |
| 31 | "movb %%dl,%2" \ |
| 32 | :"=&d" (__lr) \ |
| 33 | :"m" (*(addr)), \ |
| 34 | "m" (*((addr)+6)), \ |
| 35 | "0" (limit) \ |
| 36 | ); } while (0) |
| 37 | |
| 38 | #define set_base(ldt, base) _set_base(((char *)&(ldt)) , (base)) |
| 39 | #define set_limit(ldt, limit) _set_limit(((char *)&(ldt)) , ((limit)-1)) |
| 40 | |
| 41 | /* |
Glauber de Oliveira Costa | a6b4655 | 2008-01-30 13:31:08 +0100 | [diff] [blame^] | 42 | * Load a segment. Fall back on loading the zero |
| 43 | * segment if something goes wrong.. |
| 44 | */ |
| 45 | #define loadsegment(seg, value) \ |
| 46 | asm volatile("\n" \ |
| 47 | "1:\t" \ |
| 48 | "movl %k0,%%" #seg "\n" \ |
| 49 | "2:\n" \ |
| 50 | ".section .fixup,\"ax\"\n" \ |
| 51 | "3:\t" \ |
| 52 | "movl %k1, %%" #seg "\n\t" \ |
| 53 | "jmp 2b\n" \ |
| 54 | ".previous\n" \ |
| 55 | ".section __ex_table,\"a\"\n\t" \ |
| 56 | _ASM_ALIGN "\n\t" \ |
| 57 | _ASM_PTR " 1b,3b\n" \ |
| 58 | ".previous" \ |
| 59 | : :"r" (value), "r" (0)) |
| 60 | |
| 61 | |
| 62 | /* |
Glauber de Oliveira Costa | d895422 | 2008-01-30 13:31:08 +0100 | [diff] [blame] | 63 | * Save a segment register away |
| 64 | */ |
| 65 | #define savesegment(seg, value) \ |
| 66 | asm volatile("mov %%" #seg ",%0":"=rm" (value)) |
| 67 | |
| 68 | static inline unsigned long get_limit(unsigned long segment) |
| 69 | { |
| 70 | unsigned long __limit; |
| 71 | __asm__("lsll %1,%0" |
| 72 | :"=r" (__limit):"r" (segment)); |
| 73 | return __limit+1; |
| 74 | } |
| 75 | #endif /* __KERNEL__ */ |
| 76 | |
| 77 | static inline void clflush(void *__p) |
| 78 | { |
| 79 | asm volatile("clflush %0" : "+m" (*(char __force *)__p)); |
| 80 | } |
| 81 | |
| 82 | #define nop() __asm__ __volatile__ ("nop") |
| 83 | |
| 84 | void disable_hlt(void); |
| 85 | void enable_hlt(void); |
| 86 | |
| 87 | extern int es7000_plat; |
| 88 | void cpu_idle_wait(void); |
| 89 | |
| 90 | extern unsigned long arch_align_stack(unsigned long sp); |
| 91 | extern void free_init_pages(char *what, unsigned long begin, unsigned long end); |
| 92 | |
| 93 | void default_idle(void); |
| 94 | |
| 95 | #endif |