diff options
| -rw-r--r-- | include/asm-x86/byteorder.h | 4 | ||||
| -rw-r--r-- | include/asm-x86/msr.h | 74 |
2 files changed, 41 insertions, 37 deletions
diff --git a/include/asm-x86/byteorder.h b/include/asm-x86/byteorder.h index 1f2d6d5bf20d..fe2f2e5d51ba 100644 --- a/include/asm-x86/byteorder.h +++ b/include/asm-x86/byteorder.h | |||
| @@ -30,13 +30,13 @@ static __inline__ __attribute_const__ __u64 ___arch__swab64(__u64 val) | |||
| 30 | } v; | 30 | } v; |
| 31 | v.u = val; | 31 | v.u = val; |
| 32 | #ifdef CONFIG_X86_BSWAP | 32 | #ifdef CONFIG_X86_BSWAP |
| 33 | asm("bswapl %0 ; bswapl %1 ; xchgl %0,%1" | 33 | __asm__("bswapl %0 ; bswapl %1 ; xchgl %0,%1" |
| 34 | : "=r" (v.s.a), "=r" (v.s.b) | 34 | : "=r" (v.s.a), "=r" (v.s.b) |
| 35 | : "0" (v.s.a), "1" (v.s.b)); | 35 | : "0" (v.s.a), "1" (v.s.b)); |
| 36 | #else | 36 | #else |
| 37 | v.s.a = ___arch__swab32(v.s.a); | 37 | v.s.a = ___arch__swab32(v.s.a); |
| 38 | v.s.b = ___arch__swab32(v.s.b); | 38 | v.s.b = ___arch__swab32(v.s.b); |
| 39 | asm("xchgl %0,%1" : "=r" (v.s.a), "=r" (v.s.b) : "0" (v.s.a), "1" (v.s.b)); | 39 | __asm__("xchgl %0,%1" : "=r" (v.s.a), "=r" (v.s.b) : "0" (v.s.a), "1" (v.s.b)); |
| 40 | #endif | 40 | #endif |
| 41 | return v.u; | 41 | return v.u; |
| 42 | } | 42 | } |
diff --git a/include/asm-x86/msr.h b/include/asm-x86/msr.h index ba4b31432120..664a2fa7adc9 100644 --- a/include/asm-x86/msr.h +++ b/include/asm-x86/msr.h | |||
| @@ -191,38 +191,6 @@ static inline int wrmsr_safe_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h) | |||
| 191 | 191 | ||
| 192 | #define wrmsrl(msr,val) wrmsr(msr,(__u32)((__u64)(val)),((__u64)(val))>>32) | 192 | #define wrmsrl(msr,val) wrmsr(msr,(__u32)((__u64)(val)),((__u64)(val))>>32) |
| 193 | 193 | ||
| 194 | /* wrmsr with exception handling */ | ||
| 195 | #define wrmsr_safe(msr,a,b) ({ int ret__; \ | ||
| 196 | asm volatile("2: wrmsr ; xorl %0,%0\n" \ | ||
| 197 | "1:\n\t" \ | ||
| 198 | ".section .fixup,\"ax\"\n\t" \ | ||
| 199 | "3: movl %4,%0 ; jmp 1b\n\t" \ | ||
| 200 | ".previous\n\t" \ | ||
| 201 | ".section __ex_table,\"a\"\n" \ | ||
| 202 | " .align 8\n\t" \ | ||
| 203 | " .quad 2b,3b\n\t" \ | ||
| 204 | ".previous" \ | ||
| 205 | : "=a" (ret__) \ | ||
| 206 | : "c" (msr), "0" (a), "d" (b), "i" (-EFAULT)); \ | ||
| 207 | ret__; }) | ||
| 208 | |||
| 209 | #define checking_wrmsrl(msr,val) wrmsr_safe(msr,(u32)(val),(u32)((val)>>32)) | ||
| 210 | |||
| 211 | #define rdmsr_safe(msr,a,b) \ | ||
| 212 | ({ int ret__; \ | ||
| 213 | asm volatile ("1: rdmsr\n" \ | ||
| 214 | "2:\n" \ | ||
| 215 | ".section .fixup,\"ax\"\n" \ | ||
| 216 | "3: movl %4,%0\n" \ | ||
| 217 | " jmp 2b\n" \ | ||
| 218 | ".previous\n" \ | ||
| 219 | ".section __ex_table,\"a\"\n" \ | ||
| 220 | " .align 8\n" \ | ||
| 221 | " .quad 1b,3b\n" \ | ||
| 222 | ".previous":"=&bDS" (ret__), "=a"(*(a)), "=d"(*(b)) \ | ||
| 223 | :"c"(msr), "i"(-EIO), "0"(0)); \ | ||
| 224 | ret__; }) | ||
| 225 | |||
| 226 | #define rdtsc(low,high) \ | 194 | #define rdtsc(low,high) \ |
| 227 | __asm__ __volatile__("rdtsc" : "=a" (low), "=d" (high)) | 195 | __asm__ __volatile__("rdtsc" : "=a" (low), "=d" (high)) |
| 228 | 196 | ||
| @@ -230,17 +198,17 @@ static inline int wrmsr_safe_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h) | |||
| 230 | __asm__ __volatile__ ("rdtsc" : "=a" (low) : : "edx") | 198 | __asm__ __volatile__ ("rdtsc" : "=a" (low) : : "edx") |
| 231 | 199 | ||
| 232 | #define rdtscp(low,high,aux) \ | 200 | #define rdtscp(low,high,aux) \ |
| 233 | asm volatile (".byte 0x0f,0x01,0xf9" : "=a" (low), "=d" (high), "=c" (aux)) | 201 | __asm__ __volatile__ (".byte 0x0f,0x01,0xf9" : "=a" (low), "=d" (high), "=c" (aux)) |
| 234 | 202 | ||
| 235 | #define rdtscll(val) do { \ | 203 | #define rdtscll(val) do { \ |
| 236 | unsigned int __a,__d; \ | 204 | unsigned int __a,__d; \ |
| 237 | asm volatile("rdtsc" : "=a" (__a), "=d" (__d)); \ | 205 | __asm__ __volatile__("rdtsc" : "=a" (__a), "=d" (__d)); \ |
| 238 | (val) = ((unsigned long)__a) | (((unsigned long)__d)<<32); \ | 206 | (val) = ((unsigned long)__a) | (((unsigned long)__d)<<32); \ |
| 239 | } while(0) | 207 | } while(0) |
| 240 | 208 | ||
| 241 | #define rdtscpll(val, aux) do { \ | 209 | #define rdtscpll(val, aux) do { \ |
| 242 | unsigned long __a, __d; \ | 210 | unsigned long __a, __d; \ |
| 243 | asm volatile (".byte 0x0f,0x01,0xf9" : "=a" (__a), "=d" (__d), "=c" (aux)); \ | 211 | __asm__ __volatile__ (".byte 0x0f,0x01,0xf9" : "=a" (__a), "=d" (__d), "=c" (aux)); \ |
| 244 | (val) = (__d << 32) | __a; \ | 212 | (val) = (__d << 32) | __a; \ |
| 245 | } while (0) | 213 | } while (0) |
| 246 | 214 | ||
| @@ -253,6 +221,7 @@ static inline int wrmsr_safe_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h) | |||
| 253 | : "=a" (low), "=d" (high) \ | 221 | : "=a" (low), "=d" (high) \ |
| 254 | : "c" (counter)) | 222 | : "c" (counter)) |
| 255 | 223 | ||
| 224 | |||
| 256 | static inline void cpuid(int op, unsigned int *eax, unsigned int *ebx, | 225 | static inline void cpuid(int op, unsigned int *eax, unsigned int *ebx, |
| 257 | unsigned int *ecx, unsigned int *edx) | 226 | unsigned int *ecx, unsigned int *edx) |
| 258 | { | 227 | { |
| @@ -320,6 +289,40 @@ static inline unsigned int cpuid_edx(unsigned int op) | |||
| 320 | return edx; | 289 | return edx; |
| 321 | } | 290 | } |
| 322 | 291 | ||
| 292 | #ifdef __KERNEL__ | ||
| 293 | |||
| 294 | /* wrmsr with exception handling */ | ||
| 295 | #define wrmsr_safe(msr,a,b) ({ int ret__; \ | ||
| 296 | asm volatile("2: wrmsr ; xorl %0,%0\n" \ | ||
| 297 | "1:\n\t" \ | ||
| 298 | ".section .fixup,\"ax\"\n\t" \ | ||
| 299 | "3: movl %4,%0 ; jmp 1b\n\t" \ | ||
| 300 | ".previous\n\t" \ | ||
| 301 | ".section __ex_table,\"a\"\n" \ | ||
| 302 | " .align 8\n\t" \ | ||
| 303 | " .quad 2b,3b\n\t" \ | ||
| 304 | ".previous" \ | ||
| 305 | : "=a" (ret__) \ | ||
| 306 | : "c" (msr), "0" (a), "d" (b), "i" (-EFAULT)); \ | ||
| 307 | ret__; }) | ||
| 308 | |||
| 309 | #define checking_wrmsrl(msr,val) wrmsr_safe(msr,(u32)(val),(u32)((val)>>32)) | ||
| 310 | |||
| 311 | #define rdmsr_safe(msr,a,b) \ | ||
| 312 | ({ int ret__; \ | ||
| 313 | asm volatile ("1: rdmsr\n" \ | ||
| 314 | "2:\n" \ | ||
| 315 | ".section .fixup,\"ax\"\n" \ | ||
| 316 | "3: movl %4,%0\n" \ | ||
| 317 | " jmp 2b\n" \ | ||
| 318 | ".previous\n" \ | ||
| 319 | ".section __ex_table,\"a\"\n" \ | ||
| 320 | " .align 8\n" \ | ||
| 321 | " .quad 1b,3b\n" \ | ||
| 322 | ".previous":"=&bDS" (ret__), "=a"(*(a)), "=d"(*(b)) \ | ||
| 323 | :"c"(msr), "i"(-EIO), "0"(0)); \ | ||
| 324 | ret__; }) | ||
| 325 | |||
| 323 | #ifdef CONFIG_SMP | 326 | #ifdef CONFIG_SMP |
| 324 | void rdmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h); | 327 | void rdmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h); |
| 325 | void wrmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h); | 328 | void wrmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h); |
| @@ -343,6 +346,7 @@ static inline int wrmsr_safe_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h) | |||
| 343 | return wrmsr_safe(msr_no, l, h); | 346 | return wrmsr_safe(msr_no, l, h); |
| 344 | } | 347 | } |
| 345 | #endif /* CONFIG_SMP */ | 348 | #endif /* CONFIG_SMP */ |
| 349 | #endif /* __KERNEL__ */ | ||
| 346 | #endif /* __ASSEMBLY__ */ | 350 | #endif /* __ASSEMBLY__ */ |
| 347 | 351 | ||
| 348 | #endif /* !__i386__ */ | 352 | #endif /* !__i386__ */ |
