Signed-off-by: Joe Perches <joe@perches.com>
---
include/asm-x86/pda.h | 80 +++++++++++++++++++++++++-----------------------
1 files changed, 42 insertions(+), 38 deletions(-)
diff --git a/include/asm-x86/pda.h b/include/asm-x86/pda.h
index b364d68..62b7349 100644
--- a/include/asm-x86/pda.h
+++ b/include/asm-x86/pda.h
@@ -55,34 +55,36 @@ 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); } /* 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(); \
- } \
- } while (0)
+#define pda_to_op(op, field, val) \
+do { \
+ typedef typeof(_proxy_pda.field) T__; \
+ 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(); \
+ } \
+} while (0)
-#define pda_from_op(op,field) ({ \
+#define pda_from_op(op, field) \
+({ \
typeof(_proxy_pda.field) ret__; \
switch (sizeof(_proxy_pda.field)) { \
case 2: \
@@ -90,23 +92,24 @@ extern struct x8664_pda _proxy_pda;
"=r" (ret__) : \
"i" (pda_offset(field)), \
"m" (_proxy_pda.field)); \
- break; \
+ break; \
case 4: \
asm(op "l %%gs:%c1,%0": \
"=r" (ret__): \
"i" (pda_offset(field)), \
"m" (_proxy_pda.field)); \
- break; \
+ break; \
case 8: \
asm(op "q %%gs:%c1,%0": \
"=r" (ret__) : \
"i" (pda_offset(field)), \
"m" (_proxy_pda.field)); \
- break; \
+ break; \
default: \
__bad_pda_field(); \
- } \
- ret__; })
+ } \
+ ret__; \
+})
#define read_pda(field) pda_from_op("mov", field)
#define write_pda(field, val) pda_to_op("mov", field, val)
@@ -115,12 +118,13 @@ extern struct x8664_pda _proxy_pda;
#define or_pda(field, val) pda_to_op("or", field, val)
/* This is not atomic against other CPUs -- CPU preemption needs to be off */
-#define test_and_clear_bit_pda(bit, field) ({ \
- int old__; \
- asm volatile("btr %2,%%gs:%c3\n\tsbbl %0,%0" \
- : "=r" (old__), "+m" (_proxy_pda.field) \
- : "dIr" (bit), "i" (pda_offset(field)) : "memory"); \
- old__; \
+#define test_and_clear_bit_pda(bit, field) \
+({ \
+ int old__; \
+ asm volatile("btr %2,%%gs:%c3\n\tsbbl %0,%0" \
+ : "=r" (old__), "+m" (_proxy_pda.field) \
+ : "dIr" (bit), "i" (pda_offset(field)) : "memory");\
+ old__; \
})
#endif
--
1.5.4.rc2
--
