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Diffstat (limited to 'include/asm-x86/lguest_hcall.h')
-rw-r--r-- | include/asm-x86/lguest_hcall.h | 71 |
1 files changed, 0 insertions, 71 deletions
diff --git a/include/asm-x86/lguest_hcall.h b/include/asm-x86/lguest_hcall.h deleted file mode 100644 index a3241f28e34a..000000000000 --- a/include/asm-x86/lguest_hcall.h +++ /dev/null | |||
@@ -1,71 +0,0 @@ | |||
1 | /* Architecture specific portion of the lguest hypercalls */ | ||
2 | #ifndef _X86_LGUEST_HCALL_H | ||
3 | #define _X86_LGUEST_HCALL_H | ||
4 | |||
5 | #define LHCALL_FLUSH_ASYNC 0 | ||
6 | #define LHCALL_LGUEST_INIT 1 | ||
7 | #define LHCALL_SHUTDOWN 2 | ||
8 | #define LHCALL_LOAD_GDT 3 | ||
9 | #define LHCALL_NEW_PGTABLE 4 | ||
10 | #define LHCALL_FLUSH_TLB 5 | ||
11 | #define LHCALL_LOAD_IDT_ENTRY 6 | ||
12 | #define LHCALL_SET_STACK 7 | ||
13 | #define LHCALL_TS 8 | ||
14 | #define LHCALL_SET_CLOCKEVENT 9 | ||
15 | #define LHCALL_HALT 10 | ||
16 | #define LHCALL_SET_PTE 14 | ||
17 | #define LHCALL_SET_PMD 15 | ||
18 | #define LHCALL_LOAD_TLS 16 | ||
19 | #define LHCALL_NOTIFY 17 | ||
20 | |||
21 | #define LGUEST_TRAP_ENTRY 0x1F | ||
22 | |||
23 | /* Argument number 3 to LHCALL_LGUEST_SHUTDOWN */ | ||
24 | #define LGUEST_SHUTDOWN_POWEROFF 1 | ||
25 | #define LGUEST_SHUTDOWN_RESTART 2 | ||
26 | |||
27 | #ifndef __ASSEMBLY__ | ||
28 | #include <asm/hw_irq.h> | ||
29 | |||
30 | /*G:031 But first, how does our Guest contact the Host to ask for privileged | ||
31 | * operations? There are two ways: the direct way is to make a "hypercall", | ||
32 | * to make requests of the Host Itself. | ||
33 | * | ||
34 | * Our hypercall mechanism uses the highest unused trap code (traps 32 and | ||
35 | * above are used by real hardware interrupts). Fifteen hypercalls are | ||
36 | * available: the hypercall number is put in the %eax register, and the | ||
37 | * arguments (when required) are placed in %edx, %ebx and %ecx. If a return | ||
38 | * value makes sense, it's returned in %eax. | ||
39 | * | ||
40 | * Grossly invalid calls result in Sudden Death at the hands of the vengeful | ||
41 | * Host, rather than returning failure. This reflects Winston Churchill's | ||
42 | * definition of a gentleman: "someone who is only rude intentionally". */ | ||
43 | static inline unsigned long | ||
44 | hcall(unsigned long call, | ||
45 | unsigned long arg1, unsigned long arg2, unsigned long arg3) | ||
46 | { | ||
47 | /* "int" is the Intel instruction to trigger a trap. */ | ||
48 | asm volatile("int $" __stringify(LGUEST_TRAP_ENTRY) | ||
49 | /* The call in %eax (aka "a") might be overwritten */ | ||
50 | : "=a"(call) | ||
51 | /* The arguments are in %eax, %edx, %ebx & %ecx */ | ||
52 | : "a"(call), "d"(arg1), "b"(arg2), "c"(arg3) | ||
53 | /* "memory" means this might write somewhere in memory. | ||
54 | * This isn't true for all calls, but it's safe to tell | ||
55 | * gcc that it might happen so it doesn't get clever. */ | ||
56 | : "memory"); | ||
57 | return call; | ||
58 | } | ||
59 | /*:*/ | ||
60 | |||
61 | /* Can't use our min() macro here: needs to be a constant */ | ||
62 | #define LGUEST_IRQS (NR_IRQS < 32 ? NR_IRQS: 32) | ||
63 | |||
64 | #define LHCALL_RING_SIZE 64 | ||
65 | struct hcall_args { | ||
66 | /* These map directly onto eax, ebx, ecx, edx in struct lguest_regs */ | ||
67 | unsigned long arg0, arg2, arg3, arg1; | ||
68 | }; | ||
69 | |||
70 | #endif /* !__ASSEMBLY__ */ | ||
71 | #endif /* _I386_LGUEST_HCALL_H */ | ||