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[PATCH] Reindent macros in pda.h

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Reindent the macros in x86-64 pda.h, making them much more readable.
Follows Jeremy's i386 version of this.

No functional changes

Signed-off-by: Andi Kleen <ak@suse.de>
This commit is contained in:
Andi Kleen 2006-09-26 10:52:40 +02:00 committed by Andi Kleen
parent 383d079bfd
commit c1a9d41f4f
1 changed files with 53 additions and 32 deletions
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85
include/asm-x86_64/pda.h
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@ -41,46 +41,67 @@ extern struct x8664_pda boot_cpu_pda[];
*/ */
extern void __bad_pda_field(void); extern void __bad_pda_field(void);
/* proxy_pda doesn't actually exist, but tell gcc it is accessed /*
for all PDA accesses so it gets read/write dependencies right. */ * proxy_pda doesn't actually exist, but tell gcc it is accessed for
* all PDA accesses so it gets read/write dependencies right.
*/
extern struct x8664_pda _proxy_pda; extern struct x8664_pda _proxy_pda;
#define pda_offset(field) offsetof(struct x8664_pda, field) #define pda_offset(field) offsetof(struct x8664_pda, field)
#define pda_to_op(op,field,val) do { \ #define pda_to_op(op,field,val) do { \
typedef typeof(_proxy_pda.field) T__; \ typedef typeof(_proxy_pda.field) T__; \
if (0) { T__ tmp__; tmp__ = (val); } \ if (0) { T__ tmp__; tmp__ = (val); } /* type checking */ \
switch (sizeof(_proxy_pda.field)) { \ switch (sizeof(_proxy_pda.field)) { \
case 2: \ case 2: \
asm(op "w %1,%%gs:%c2" : "+m" (_proxy_pda.field) : \ asm(op "w %1,%%gs:%c2" : \
"ri" ((T__)val),"i"(pda_offset(field))); break; \ "+m" (_proxy_pda.field) : \
case 4: \ "ri" ((T__)val), \
asm(op "l %1,%%gs:%c2" : "+m" (_proxy_pda.field) : \ "i"(pda_offset(field))); \
"ri" ((T__)val),"i"(pda_offset(field))); break; \ break; \
case 8: \ case 4: \
asm(op "q %1,%%gs:%c2": "+m" (_proxy_pda.field) : \ asm(op "l %1,%%gs:%c2" : \
"ri" ((T__)val),"i"(pda_offset(field))); break; \ "+m" (_proxy_pda.field) : \
default: __bad_pda_field(); \ "ri" ((T__)val), \
} \ "i" (pda_offset(field))); \
break; \
case 8: \
asm(op "q %1,%%gs:%c2": \
"+m" (_proxy_pda.field) : \
"ri" ((T__)val), \
"i"(pda_offset(field))); \
break; \
default: \
__bad_pda_field(); \
} \
} while (0) } while (0)
#define pda_from_op(op,field) ({ \ #define pda_from_op(op,field) ({ \
typeof(_proxy_pda.field) ret__; \ typeof(_proxy_pda.field) ret__; \
switch (sizeof(_proxy_pda.field)) { \ switch (sizeof(_proxy_pda.field)) { \
case 2: \ case 2: \
asm(op "w %%gs:%c1,%0":"=r" (ret__):\ asm(op "w %%gs:%c1,%0" : \
"i" (pda_offset(field)), "m" (_proxy_pda.field)); break;\ "=r" (ret__) : \
case 4: \ "i" (pda_offset(field)), \
asm(op "l %%gs:%c1,%0":"=r" (ret__):\ "m" (_proxy_pda.field)); \
"i" (pda_offset(field)), "m" (_proxy_pda.field)); break;\ break; \
case 8: \ case 4: \
asm(op "q %%gs:%c1,%0":"=r" (ret__):\ asm(op "l %%gs:%c1,%0": \
"i" (pda_offset(field)), "m" (_proxy_pda.field)); break;\ "=r" (ret__): \
default: __bad_pda_field(); \ "i" (pda_offset(field)), \
} \ "m" (_proxy_pda.field)); \
break; \
case 8: \
asm(op "q %%gs:%c1,%0": \
"=r" (ret__) : \
"i" (pda_offset(field)), \
"m" (_proxy_pda.field)); \
break; \
default: \
__bad_pda_field(); \
} \
ret__; }) ret__; })
#define read_pda(field) pda_from_op("mov",field) #define read_pda(field) pda_from_op("mov",field)
#define write_pda(field,val) pda_to_op("mov",field,val) #define write_pda(field,val) pda_to_op("mov",field,val)
#define add_pda(field,val) pda_to_op("add",field,val) #define add_pda(field,val) pda_to_op("add",field,val)