ia64/linux-2.6.18-xen.hg

view include/xen/interface/arch-x86/xen-x86_32.h @ 540:db71fb3204b5

Sync public Xen hedaers with xen-unstable.hg
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
author Keir Fraser <keir.fraser@citrix.com>
date Mon May 12 10:03:08 2008 +0100 (2008-05-12)
parents 854690f06ed9
children
line source
1 /******************************************************************************
2 * xen-x86_32.h
3 *
4 * Guest OS interface to x86 32-bit Xen.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to
8 * deal in the Software without restriction, including without limitation the
9 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
10 * sell copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
23 *
24 * Copyright (c) 2004-2007, K A Fraser
25 */
27 #ifndef __XEN_PUBLIC_ARCH_X86_XEN_X86_32_H__
28 #define __XEN_PUBLIC_ARCH_X86_XEN_X86_32_H__
30 /*
31 * Hypercall interface:
32 * Input: %ebx, %ecx, %edx, %esi, %edi (arguments 1-5)
33 * Output: %eax
34 * Access is via hypercall page (set up by guest loader or via a Xen MSR):
35 * call hypercall_page + hypercall-number * 32
36 * Clobbered: Argument registers (e.g., 2-arg hypercall clobbers %ebx,%ecx)
37 */
39 #if __XEN_INTERFACE_VERSION__ < 0x00030203
40 /*
41 * Legacy hypercall interface:
42 * As above, except the entry sequence to the hypervisor is:
43 * mov $hypercall-number*32,%eax ; int $0x82
44 */
45 #define TRAP_INSTR "int $0x82"
46 #endif
48 /*
49 * These flat segments are in the Xen-private section of every GDT. Since these
50 * are also present in the initial GDT, many OSes will be able to avoid
51 * installing their own GDT.
52 */
53 #define FLAT_RING1_CS 0xe019 /* GDT index 259 */
54 #define FLAT_RING1_DS 0xe021 /* GDT index 260 */
55 #define FLAT_RING1_SS 0xe021 /* GDT index 260 */
56 #define FLAT_RING3_CS 0xe02b /* GDT index 261 */
57 #define FLAT_RING3_DS 0xe033 /* GDT index 262 */
58 #define FLAT_RING3_SS 0xe033 /* GDT index 262 */
60 #define FLAT_KERNEL_CS FLAT_RING1_CS
61 #define FLAT_KERNEL_DS FLAT_RING1_DS
62 #define FLAT_KERNEL_SS FLAT_RING1_SS
63 #define FLAT_USER_CS FLAT_RING3_CS
64 #define FLAT_USER_DS FLAT_RING3_DS
65 #define FLAT_USER_SS FLAT_RING3_SS
67 #define __HYPERVISOR_VIRT_START_PAE 0xF5800000
68 #define __MACH2PHYS_VIRT_START_PAE 0xF5800000
69 #define __MACH2PHYS_VIRT_END_PAE 0xF6800000
70 #define HYPERVISOR_VIRT_START_PAE \
71 mk_unsigned_long(__HYPERVISOR_VIRT_START_PAE)
72 #define MACH2PHYS_VIRT_START_PAE \
73 mk_unsigned_long(__MACH2PHYS_VIRT_START_PAE)
74 #define MACH2PHYS_VIRT_END_PAE \
75 mk_unsigned_long(__MACH2PHYS_VIRT_END_PAE)
77 /* Non-PAE bounds are obsolete. */
78 #define __HYPERVISOR_VIRT_START_NONPAE 0xFC000000
79 #define __MACH2PHYS_VIRT_START_NONPAE 0xFC000000
80 #define __MACH2PHYS_VIRT_END_NONPAE 0xFC400000
81 #define HYPERVISOR_VIRT_START_NONPAE \
82 mk_unsigned_long(__HYPERVISOR_VIRT_START_NONPAE)
83 #define MACH2PHYS_VIRT_START_NONPAE \
84 mk_unsigned_long(__MACH2PHYS_VIRT_START_NONPAE)
85 #define MACH2PHYS_VIRT_END_NONPAE \
86 mk_unsigned_long(__MACH2PHYS_VIRT_END_NONPAE)
88 #define __HYPERVISOR_VIRT_START __HYPERVISOR_VIRT_START_PAE
89 #define __MACH2PHYS_VIRT_START __MACH2PHYS_VIRT_START_PAE
90 #define __MACH2PHYS_VIRT_END __MACH2PHYS_VIRT_END_PAE
92 #ifndef HYPERVISOR_VIRT_START
93 #define HYPERVISOR_VIRT_START mk_unsigned_long(__HYPERVISOR_VIRT_START)
94 #endif
96 #define MACH2PHYS_VIRT_START mk_unsigned_long(__MACH2PHYS_VIRT_START)
97 #define MACH2PHYS_VIRT_END mk_unsigned_long(__MACH2PHYS_VIRT_END)
98 #define MACH2PHYS_NR_ENTRIES ((MACH2PHYS_VIRT_END-MACH2PHYS_VIRT_START)>>2)
99 #ifndef machine_to_phys_mapping
100 #define machine_to_phys_mapping ((unsigned long *)MACH2PHYS_VIRT_START)
101 #endif
103 /* 32-/64-bit invariability for control interfaces (domctl/sysctl). */
104 #if defined(__XEN__) || defined(__XEN_TOOLS__)
105 #undef ___DEFINE_XEN_GUEST_HANDLE
106 #define ___DEFINE_XEN_GUEST_HANDLE(name, type) \
107 typedef struct { type *p; } \
108 __guest_handle_ ## name; \
109 typedef struct { union { type *p; uint64_aligned_t q; }; } \
110 __guest_handle_64_ ## name
111 #undef set_xen_guest_handle
112 #define set_xen_guest_handle(hnd, val) \
113 do { if ( sizeof(hnd) == 8 ) *(uint64_t *)&(hnd) = 0; \
114 (hnd).p = val; \
115 } while ( 0 )
116 #define uint64_aligned_t uint64_t __attribute__((aligned(8)))
117 #define __XEN_GUEST_HANDLE_64(name) __guest_handle_64_ ## name
118 #define XEN_GUEST_HANDLE_64(name) __XEN_GUEST_HANDLE_64(name)
119 #endif
121 #ifndef __ASSEMBLY__
123 struct cpu_user_regs {
124 uint32_t ebx;
125 uint32_t ecx;
126 uint32_t edx;
127 uint32_t esi;
128 uint32_t edi;
129 uint32_t ebp;
130 uint32_t eax;
131 uint16_t error_code; /* private */
132 uint16_t entry_vector; /* private */
133 uint32_t eip;
134 uint16_t cs;
135 uint8_t saved_upcall_mask;
136 uint8_t _pad0;
137 uint32_t eflags; /* eflags.IF == !saved_upcall_mask */
138 uint32_t esp;
139 uint16_t ss, _pad1;
140 uint16_t es, _pad2;
141 uint16_t ds, _pad3;
142 uint16_t fs, _pad4;
143 uint16_t gs, _pad5;
144 };
145 typedef struct cpu_user_regs cpu_user_regs_t;
146 DEFINE_XEN_GUEST_HANDLE(cpu_user_regs_t);
148 /*
149 * Page-directory addresses above 4GB do not fit into architectural %cr3.
150 * When accessing %cr3, or equivalent field in vcpu_guest_context, guests
151 * must use the following accessor macros to pack/unpack valid MFNs.
152 */
153 #define xen_pfn_to_cr3(pfn) (((unsigned)(pfn) << 12) | ((unsigned)(pfn) >> 20))
154 #define xen_cr3_to_pfn(cr3) (((unsigned)(cr3) >> 12) | ((unsigned)(cr3) << 20))
156 struct arch_vcpu_info {
157 unsigned long cr2;
158 unsigned long pad[5]; /* sizeof(vcpu_info_t) == 64 */
159 };
160 typedef struct arch_vcpu_info arch_vcpu_info_t;
162 struct xen_callback {
163 unsigned long cs;
164 unsigned long eip;
165 };
166 typedef struct xen_callback xen_callback_t;
168 #endif /* !__ASSEMBLY__ */
170 #endif /* __XEN_PUBLIC_ARCH_X86_XEN_X86_32_H__ */
172 /*
173 * Local variables:
174 * mode: C
175 * c-set-style: "BSD"
176 * c-basic-offset: 4
177 * tab-width: 4
178 * indent-tabs-mode: nil
179 * End:
180 */