Xen Test Framework
hypercall-x86_64.h
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1 #ifndef XTF_X86_64_HYPERCALL_H
2 #define XTF_X86_64_HYPERCALL_H
3 
4 /*
5  * Hypercall primatives for 64bit
6  *
7  * Inputs: %rdi, %rsi, %rdx, %r10, %r8, %r9 (arguments 1-6)
8  */
9 
10 #define _hypercall64_0(type, hcall) \
11  ({ \
12  long res; \
13  asm volatile ( \
14  "call hypercall_page + %c[offset]" \
15  : "=a" (res) \
16  : [offset] "i" (hcall * 32) \
17  : "memory" ); \
18  (type)res; \
19  })
20 
21 #define _hypercall64_1(type, hcall, a1) \
22  ({ \
23  long res, _a1 = (long)(a1); \
24  asm volatile ( \
25  "call hypercall_page + %c[offset]" \
26  : "=a" (res), "+D" (_a1) \
27  : [offset] "i" (hcall * 32) \
28  : "memory" ); \
29  (type)res; \
30  })
31 
32 #define _hypercall64_2(type, hcall, a1, a2) \
33  ({ \
34  long res, _a1 = (long)(a1), _a2 = (long)(a2); \
35  asm volatile ( \
36  "call hypercall_page + %c[offset]" \
37  : "=a" (res), "+D" (_a1), "+S" (_a2) \
38  : [offset] "i" (hcall * 32) \
39  : "memory" ); \
40  (type)res; \
41  })
42 
43 #define _hypercall64_3(type, hcall, a1, a2, a3) \
44  ({ \
45  long res, _a1 = (long)(a1), _a2 = (long)(a2), _a3 = (long)(a3); \
46  asm volatile ( \
47  "call hypercall_page + %c[offset]" \
48  : "=a" (res), "+D" (_a1), "+S" (_a2), "+d" (_a3) \
49  : [offset] "i" (hcall * 32) \
50  : "memory" ); \
51  (type)res; \
52  })
53 
54 #define _hypercall64_4(type, hcall, a1, a2, a3, a4) \
55  ({ \
56  long res, _a1 = (long)(a1), _a2 = (long)(a2), _a3 = (long)(a3); \
57  register long _a4 asm ("r10") = (long)(a4); \
58  asm volatile ( \
59  "call hypercall_page + %c[offset]" \
60  : "=a" (res), "+D" (_a1), "+S" (_a2), "+d" (_a3), \
61  "+r" (_a4) \
62  : [offset] "i" (hcall * 32) \
63  : "memory" ); \
64  (type)res; \
65  })
66 
67 #define _hypercall64_5(type, hcall, a1, a2, a3, a4, a5) \
68  ({ \
69  long res, _a1 = (long)(a1), _a2 = (long)(a2), _a3 = (long)(a3); \
70  register long _a4 asm ("r10") = (long)(a4); \
71  register long _a5 asm ("r8") = (long)(a5); \
72  asm volatile ( \
73  "call hypercall_page + %c[offset]" \
74  : "=a" (res), "+D" (_a1), "+S" (_a2), "+d" (_a3), \
75  "+r" (_a4), "+r" (_a5) \
76  : [offset] "i" (hcall * 32) \
77  : "memory" ); \
78  (type)res; \
79  })
80 
81 #endif /* XTF_X86_64_HYPERCALL_H */
82 
83 /*
84  * Local variables:
85  * mode: C
86  * c-file-style: "BSD"
87  * c-basic-offset: 4
88  * tab-width: 4
89  * indent-tabs-mode: nil
90  * End:
91  */
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