x86: optimise x86's do_page_fault (C entry point for the page fault path)
[linux-2.6.git] / arch / ia64 / xen / hypercall.S
1 /*
2  * Support routines for Xen hypercalls
3  *
4  * Copyright (C) 2005 Dan Magenheimer <dan.magenheimer@hp.com>
5  * Copyright (C) 2008 Yaozu (Eddie) Dong <eddie.dong@intel.com>
6  */
7
8 #include <asm/asmmacro.h>
9 #include <asm/intrinsics.h>
10 #include <asm/xen/privop.h>
11
12 /*
13  * Hypercalls without parameter.
14  */
15 #define __HCALL0(name,hcall)            \
16         GLOBAL_ENTRY(name);             \
17         break   hcall;                  \
18         br.ret.sptk.many rp;            \
19         END(name)
20
21 /*
22  * Hypercalls with 1 parameter.
23  */
24 #define __HCALL1(name,hcall)            \
25         GLOBAL_ENTRY(name);             \
26         mov r8=r32;                     \
27         break   hcall;                  \
28         br.ret.sptk.many rp;            \
29         END(name)
30
31 /*
32  * Hypercalls with 2 parameters.
33  */
34 #define __HCALL2(name,hcall)            \
35         GLOBAL_ENTRY(name);             \
36         mov r8=r32;                     \
37         mov r9=r33;                     \
38         break   hcall;                  \
39         br.ret.sptk.many rp;            \
40         END(name)
41
42 __HCALL0(xen_get_psr, HYPERPRIVOP_GET_PSR)
43 __HCALL0(xen_get_ivr, HYPERPRIVOP_GET_IVR)
44 __HCALL0(xen_get_tpr, HYPERPRIVOP_GET_TPR)
45 __HCALL0(xen_hyper_ssm_i, HYPERPRIVOP_SSM_I)
46
47 __HCALL1(xen_set_tpr, HYPERPRIVOP_SET_TPR)
48 __HCALL1(xen_eoi, HYPERPRIVOP_EOI)
49 __HCALL1(xen_thash, HYPERPRIVOP_THASH)
50 __HCALL1(xen_set_itm, HYPERPRIVOP_SET_ITM)
51 __HCALL1(xen_get_rr, HYPERPRIVOP_GET_RR)
52 __HCALL1(xen_fc, HYPERPRIVOP_FC)
53 __HCALL1(xen_get_cpuid, HYPERPRIVOP_GET_CPUID)
54 __HCALL1(xen_get_pmd, HYPERPRIVOP_GET_PMD)
55
56 __HCALL2(xen_ptcga, HYPERPRIVOP_PTC_GA)
57 __HCALL2(xen_set_rr, HYPERPRIVOP_SET_RR)
58 __HCALL2(xen_set_kr, HYPERPRIVOP_SET_KR)
59
60 #ifdef CONFIG_IA32_SUPPORT
61 __HCALL0(xen_get_eflag, HYPERPRIVOP_GET_EFLAG)
62 __HCALL1(xen_set_eflag, HYPERPRIVOP_SET_EFLAG)  // refer SDM vol1 3.1.8
63 #endif /* CONFIG_IA32_SUPPORT */
64
65 GLOBAL_ENTRY(xen_set_rr0_to_rr4)
66         mov r8=r32
67         mov r9=r33
68         mov r10=r34
69         mov r11=r35
70         mov r14=r36
71         XEN_HYPER_SET_RR0_TO_RR4
72         br.ret.sptk.many rp
73         ;;
74 END(xen_set_rr0_to_rr4)
75
76 GLOBAL_ENTRY(xen_send_ipi)
77         mov r14=r32
78         mov r15=r33
79         mov r2=0x400
80         break 0x1000
81         ;;
82         br.ret.sptk.many rp
83         ;;
84 END(xen_send_ipi)
85
86 GLOBAL_ENTRY(__hypercall)
87         mov r2=r37
88         break 0x1000
89         br.ret.sptk.many b0
90         ;;
91 END(__hypercall)