diff options
Diffstat (limited to 'include/asm-i386/processor.h')
| -rw-r--r-- | include/asm-i386/processor.h | 94 |
1 files changed, 73 insertions, 21 deletions
diff --git a/include/asm-i386/processor.h b/include/asm-i386/processor.h index 80f7e8a1e87..96edfdfe32d 100644 --- a/include/asm-i386/processor.h +++ b/include/asm-i386/processor.h @@ -147,7 +147,7 @@ static inline void detect_ht(struct cpuinfo_x86 *c) {} #define X86_EFLAGS_VIP 0x00100000 /* Virtual Interrupt Pending */ #define X86_EFLAGS_ID 0x00200000 /* CPUID detection flag */ -static inline fastcall void native_cpuid(unsigned int *eax, unsigned int *ebx, +static inline void native_cpuid(unsigned int *eax, unsigned int *ebx, unsigned int *ecx, unsigned int *edx) { /* ecx is often an input as well as an output. */ @@ -545,13 +545,7 @@ static inline void rep_nop(void) #define cpu_relax() rep_nop() -#ifdef CONFIG_PARAVIRT -#include <asm/paravirt.h> -#else -#define paravirt_enabled() 0 -#define __cpuid native_cpuid - -static inline void load_esp0(struct tss_struct *tss, struct thread_struct *thread) +static inline void native_load_esp0(struct tss_struct *tss, struct thread_struct *thread) { tss->esp0 = thread->esp0; /* This can only happen when SEP is enabled, no need to test "SEP"arately */ @@ -561,24 +555,60 @@ static inline void load_esp0(struct tss_struct *tss, struct thread_struct *threa } } -/* - * These special macros can be used to get or set a debugging register - */ -#define get_debugreg(var, register) \ - __asm__("movl %%db" #register ", %0" \ - :"=r" (var)) -#define set_debugreg(value, register) \ - __asm__("movl %0,%%db" #register \ - : /* no output */ \ - :"r" (value)) -#define set_iopl_mask native_set_iopl_mask -#endif /* CONFIG_PARAVIRT */ +static inline unsigned long native_get_debugreg(int regno) +{ + unsigned long val = 0; /* Damn you, gcc! */ + + switch (regno) { + case 0: + asm("movl %%db0, %0" :"=r" (val)); break; + case 1: + asm("movl %%db1, %0" :"=r" (val)); break; + case 2: + asm("movl %%db2, %0" :"=r" (val)); break; + case 3: + asm("movl %%db3, %0" :"=r" (val)); break; + case 6: + asm("movl %%db6, %0" :"=r" (val)); break; + case 7: + asm("movl %%db7, %0" :"=r" (val)); break; + default: + BUG(); + } + return val; +} + +static inline void native_set_debugreg(int regno, unsigned long value) +{ + switch (regno) { + case 0: + asm("movl %0,%%db0" : /* no output */ :"r" (value)); + break; + case 1: + asm("movl %0,%%db1" : /* no output */ :"r" (value)); + break; + case 2: + asm("movl %0,%%db2" : /* no output */ :"r" (value)); + break; + case 3: + asm("movl %0,%%db3" : /* no output */ :"r" (value)); + break; + case 6: + asm("movl %0,%%db6" : /* no output */ :"r" (value)); + break; + case 7: + asm("movl %0,%%db7" : /* no output */ :"r" (value)); + break; + default: + BUG(); + } +} /* * Set IOPL bits in EFLAGS from given mask */ -static fastcall inline void native_set_iopl_mask(unsigned mask) +static inline void native_set_iopl_mask(unsigned mask) { unsigned int reg; __asm__ __volatile__ ("pushfl;" @@ -591,6 +621,28 @@ static fastcall inline void native_set_iopl_mask(unsigned mask) : "i" (~X86_EFLAGS_IOPL), "r" (mask)); } +#ifdef CONFIG_PARAVIRT +#include <asm/paravirt.h> +#else +#define paravirt_enabled() 0 +#define __cpuid native_cpuid + +static inline void load_esp0(struct tss_struct *tss, struct thread_struct *thread) +{ + native_load_esp0(tss, thread); +} + +/* + * These special macros can be used to get or set a debugging register + */ +#define get_debugreg(var, register) \ + (var) = native_get_debugreg(register) +#define set_debugreg(value, register) \ + native_set_debugreg(register, value) + +#define set_iopl_mask native_set_iopl_mask +#endif /* CONFIG_PARAVIRT */ + /* * Generic CPUID function * clear %ecx since some cpus (Cyrix MII) do not set or clear %ecx |