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x86: relocate get/set debugreg fcns to include/asm/debugreg.

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Since we already have a debugreg.h header file, move the
assoc. get/set functions to it.  In addition to it being the
logical home for them, it has a secondary advantage.  The
functions that are moved use BUG().  So we really need to
have linux/bug.h in scope.  But asm/processor.h is used about
600 times, vs. only about 15 for debugreg.h -- so adding bug.h
to the latter reduces the amount of time we'll be processing
it during a compile.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
CC: Thomas Gleixner <tglx@linutronix.de>
CC: "H. Peter Anvin" <hpa@zytor.com>
This commit is contained in:
Paul Gortmaker
2012-01-20 16:24:09 -05:00
parent 6b21d18ed5
commit f649e9388c
3 changed files with 68 additions and 63 deletions
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63
arch/x86/include/asm/processor.h
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@@ -474,61 +474,6 @@ struct thread_struct {
unsigned io_bitmap_max;
};
static inline unsigned long native_get_debugreg(int regno)
{
unsigned long val = 0; /* Damn you, gcc! */
switch (regno) {
case 0:
asm("mov %%db0, %0" :"=r" (val));
break;
case 1:
asm("mov %%db1, %0" :"=r" (val));
break;
case 2:
asm("mov %%db2, %0" :"=r" (val));
break;
case 3:
asm("mov %%db3, %0" :"=r" (val));
break;
case 6:
asm("mov %%db6, %0" :"=r" (val));
break;
case 7:
asm("mov %%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("mov %0, %%db0" ::"r" (value));
break;
case 1:
asm("mov %0, %%db1" ::"r" (value));
break;
case 2:
asm("mov %0, %%db2" ::"r" (value));
break;
case 3:
asm("mov %0, %%db3" ::"r" (value));
break;
case 6:
asm("mov %0, %%db6" ::"r" (value));
break;
case 7:
asm("mov %0, %%db7" ::"r" (value));
break;
default:
BUG();
}
}
/*
* Set IOPL bits in EFLAGS from given mask
*/
@@ -574,14 +519,6 @@ static inline void native_swapgs(void)
#define __cpuid native_cpuid
#define paravirt_enabled() 0
/*
* 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)
static inline void load_sp0(struct tss_struct *tss,
struct thread_struct *thread)
{