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

[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
......@@ -41,46 +41,67 @@ 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; \
case 4: \
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(); \
case 2: \
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; \
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)
#define pda_from_op(op,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;\
case 4: \
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(); \
case 2: \
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; \
case 8: \
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)
......
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