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@@ -57,34 +57,36 @@ extern struct x8664_pda _proxy_pda;
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#define pda_offset(field) offsetof(struct x8664_pda, field)
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-#define pda_to_op(op, field, val) do { \
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- typedef typeof(_proxy_pda.field) T__; \
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- if (0) { T__ tmp__; tmp__ = (val); } /* type checking */ \
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- switch (sizeof(_proxy_pda.field)) { \
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- case 2: \
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- asm(op "w %1,%%gs:%c2" : \
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- "+m" (_proxy_pda.field) : \
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- "ri" ((T__)val), \
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- "i"(pda_offset(field))); \
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- break; \
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- case 4: \
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- asm(op "l %1,%%gs:%c2" : \
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- "+m" (_proxy_pda.field) : \
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- "ri" ((T__)val), \
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- "i" (pda_offset(field))); \
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- break; \
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- case 8: \
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- asm(op "q %1,%%gs:%c2": \
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- "+m" (_proxy_pda.field) : \
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- "ri" ((T__)val), \
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- "i"(pda_offset(field))); \
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- break; \
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- default: \
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- __bad_pda_field(); \
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- } \
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- } while (0)
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+#define pda_to_op(op, field, val) \
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+do { \
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+ typedef typeof(_proxy_pda.field) T__; \
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+ if (0) { T__ tmp__; tmp__ = (val); } /* type checking */ \
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+ switch (sizeof(_proxy_pda.field)) { \
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+ case 2: \
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+ asm(op "w %1,%%gs:%c2" : \
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+ "+m" (_proxy_pda.field) : \
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+ "ri" ((T__)val), \
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+ "i"(pda_offset(field))); \
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+ break; \
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+ case 4: \
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+ asm(op "l %1,%%gs:%c2" : \
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+ "+m" (_proxy_pda.field) : \
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+ "ri" ((T__)val), \
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+ "i" (pda_offset(field))); \
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+ break; \
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+ case 8: \
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+ asm(op "q %1,%%gs:%c2": \
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+ "+m" (_proxy_pda.field) : \
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+ "ri" ((T__)val), \
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+ "i"(pda_offset(field))); \
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+ break; \
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+ default: \
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+ __bad_pda_field(); \
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+ } \
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+} while (0)
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-#define pda_from_op(op,field) ({ \
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+#define pda_from_op(op, field) \
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+({ \
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typeof(_proxy_pda.field) ret__; \
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switch (sizeof(_proxy_pda.field)) { \
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case 2: \
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@@ -92,23 +94,24 @@ extern struct x8664_pda _proxy_pda;
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"=r" (ret__) : \
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"i" (pda_offset(field)), \
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"m" (_proxy_pda.field)); \
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- break; \
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+ break; \
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case 4: \
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asm(op "l %%gs:%c1,%0": \
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"=r" (ret__): \
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"i" (pda_offset(field)), \
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"m" (_proxy_pda.field)); \
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- break; \
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+ break; \
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case 8: \
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asm(op "q %%gs:%c1,%0": \
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"=r" (ret__) : \
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"i" (pda_offset(field)), \
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"m" (_proxy_pda.field)); \
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- break; \
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+ break; \
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default: \
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__bad_pda_field(); \
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- } \
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- ret__; })
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+ } \
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+ ret__; \
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+})
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#define read_pda(field) pda_from_op("mov", field)
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#define write_pda(field, val) pda_to_op("mov", field, val)
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@@ -117,12 +120,13 @@ extern struct x8664_pda _proxy_pda;
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#define or_pda(field, val) pda_to_op("or", field, val)
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/* This is not atomic against other CPUs -- CPU preemption needs to be off */
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-#define test_and_clear_bit_pda(bit, field) ({ \
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- int old__; \
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- asm volatile("btr %2,%%gs:%c3\n\tsbbl %0,%0" \
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- : "=r" (old__), "+m" (_proxy_pda.field) \
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- : "dIr" (bit), "i" (pda_offset(field)) : "memory"); \
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- old__; \
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+#define test_and_clear_bit_pda(bit, field) \
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+({ \
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+ int old__; \
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+ asm volatile("btr %2,%%gs:%c3\n\tsbbl %0,%0" \
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+ : "=r" (old__), "+m" (_proxy_pda.field) \
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+ : "dIr" (bit), "i" (pda_offset(field)) : "memory");\
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+ old__; \
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})
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#endif
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