1 /****************************************************************************
2 ****************************************************************************
3 ***
4 *** This header was automatically generated from a Linux kernel header
5 *** of the same name, to make information necessary for userspace to
6 *** call into the kernel available to libc. It contains only constants,
7 *** structures, and macros generated from the original header, and thus,
8 *** contains no copyrightable information.
9 ***
10 ****************************************************************************
11 ****************************************************************************/
12 #ifndef X86_64_PDA_H
13 #define X86_64_PDA_H
15 #ifndef __ASSEMBLY__
16 #include <linux/stddef.h>
17 #include <linux/types.h>
18 #include <linux/cache.h>
19 #include <asm/page.h>
21 struct x8664_pda {
22 struct task_struct *pcurrent;
23 unsigned long data_offset;
24 unsigned long kernelstack;
25 unsigned long oldrsp;
26 int irqcount;
27 int cpunumber;
28 char *irqstackptr;
29 int nodenumber;
30 unsigned int __softirq_pending;
31 unsigned int __nmi_count;
32 short mmu_state;
33 short isidle;
34 struct mm_struct *active_mm;
35 unsigned apic_timer_irqs;
36 unsigned irq0_irqs;
37 unsigned irq_resched_count;
38 unsigned irq_call_count;
39 unsigned irq_tlb_count;
40 unsigned irq_thermal_count;
41 unsigned irq_threshold_count;
42 unsigned irq_spurious_count;
43 } ____cacheline_aligned_in_smp;
45 #define cpu_pda(i) (_cpu_pda[i])
47 #define pda_offset(field) offsetof(struct x8664_pda, field)
49 #define pda_to_op(op,field,val) do { typedef typeof(_proxy_pda.field) T__; if (0) { T__ tmp__; tmp__ = (val); } 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)
51 #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(); } ret__; })
53 #define read_pda(field) pda_from_op("mov",field)
54 #define write_pda(field,val) pda_to_op("mov",field,val)
55 #define add_pda(field,val) pda_to_op("add",field,val)
56 #define sub_pda(field,val) pda_to_op("sub",field,val)
57 #define or_pda(field,val) pda_to_op("or",field,val)
59 #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__; })
61 #endif
63 #define PDA_STACKOFFSET (5*8)
65 #endif