Commit c1a9d41f authored by Andi Kleen's avatar Andi Kleen Committed by Andi Kleen
Browse files

[PATCH] Reindent macros in pda.h 



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: default avatarAndi Kleen <ak@suse.de>
parent 383d079b

include/asm-x86_64/pda.h

+53 −32
Original line number Diff line number Diff line
@@ -41,26 +41,38 @@ extern struct x8664_pda boot_cpu_pda[]; 
 */ 

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;



#define pda_offset(field) offsetof(struct x8664_pda, field)



#define pda_to_op(op,field,val) do {		\

	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)) {	\

	case 2:					\

asm(op "w %1,%%gs:%c2" : "+m" (_proxy_pda.field) : \

	"ri" ((T__)val),"i"(pda_offset(field))); break; \

		asm(op "w %1,%%gs:%c2" : 	\

		    "+m" (_proxy_pda.field) :	\

		    "ri" ((T__)val),		\

		    "i"(pda_offset(field))); 	\

 		break;				\

	case 4:					\

asm(op "l %1,%%gs:%c2" : "+m" (_proxy_pda.field) : \

	"ri" ((T__)val),"i"(pda_offset(field))); break; \

		asm(op "l %1,%%gs:%c2" : 	\

		    "+m" (_proxy_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(); 					\

		asm(op "q %1,%%gs:%c2": 	\

		    "+m" (_proxy_pda.field) :	\

		    "ri" ((T__)val),		\

		    "i"(pda_offset(field))); 	\

		break;				\

       default: 				\

		__bad_pda_field();		\

       }					\

       } while (0)
@@ -68,19 +80,28 @@ default: __bad_pda_field(); \ 
	typeof(_proxy_pda.field) ret__;		\

	switch (sizeof(_proxy_pda.field)) {	\

       	case 2:					\

asm(op "w %%gs:%c1,%0":"=r" (ret__):\

	"i" (pda_offset(field)), "m" (_proxy_pda.field)); break;\

		asm(op "w %%gs:%c1,%0" : 	\

		    "=r" (ret__) :		\

		    "i" (pda_offset(field)), 	\

		    "m" (_proxy_pda.field)); 	\

		 break;				\

	case 4:					\

asm(op "l %%gs:%c1,%0":"=r" (ret__):\

	"i" (pda_offset(field)), "m" (_proxy_pda.field)); break;\

		asm(op "l %%gs:%c1,%0":		\

		    "=r" (ret__):		\

		    "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(); 					\

		asm(op "q %%gs:%c1,%0":		\

		    "=r" (ret__) :		\

		    "i" (pda_offset(field)), 	\

		    "m" (_proxy_pda.field)); 	\

		 break;				\

       default: 				\

		__bad_pda_field();		\

       }					\

       ret__; })





#define read_pda(field) pda_from_op("mov",field)

#define write_pda(field,val) pda_to_op("mov",field,val)

#define add_pda(field,val) pda_to_op("add",field,val)