174 lines
6.2 KiB
C
174 lines
6.2 KiB
C
/******************************************************************************
|
|
* xen-x86_32.h
|
|
*
|
|
* Guest OS interface to x86 32-bit Xen.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to
|
|
* deal in the Software without restriction, including without limitation the
|
|
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
|
|
* sell copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
|
|
* DEALINGS IN THE SOFTWARE.
|
|
*
|
|
* Copyright (c) 2004-2007, K A Fraser
|
|
*/
|
|
|
|
#ifndef __XEN_PUBLIC_ARCH_X86_XEN_X86_32_H__
|
|
#define __XEN_PUBLIC_ARCH_X86_XEN_X86_32_H__
|
|
|
|
FILE_LICENCE ( MIT );
|
|
|
|
/*
|
|
* Hypercall interface:
|
|
* Input: %ebx, %ecx, %edx, %esi, %edi, %ebp (arguments 1-6)
|
|
* Output: %eax
|
|
* Access is via hypercall page (set up by guest loader or via a Xen MSR):
|
|
* call hypercall_page + hypercall-number * 32
|
|
* Clobbered: Argument registers (e.g., 2-arg hypercall clobbers %ebx,%ecx)
|
|
*/
|
|
|
|
/*
|
|
* These flat segments are in the Xen-private section of every GDT. Since these
|
|
* are also present in the initial GDT, many OSes will be able to avoid
|
|
* installing their own GDT.
|
|
*/
|
|
#define FLAT_RING1_CS 0xe019 /* GDT index 259 */
|
|
#define FLAT_RING1_DS 0xe021 /* GDT index 260 */
|
|
#define FLAT_RING1_SS 0xe021 /* GDT index 260 */
|
|
#define FLAT_RING3_CS 0xe02b /* GDT index 261 */
|
|
#define FLAT_RING3_DS 0xe033 /* GDT index 262 */
|
|
#define FLAT_RING3_SS 0xe033 /* GDT index 262 */
|
|
|
|
#define FLAT_KERNEL_CS FLAT_RING1_CS
|
|
#define FLAT_KERNEL_DS FLAT_RING1_DS
|
|
#define FLAT_KERNEL_SS FLAT_RING1_SS
|
|
#define FLAT_USER_CS FLAT_RING3_CS
|
|
#define FLAT_USER_DS FLAT_RING3_DS
|
|
#define FLAT_USER_SS FLAT_RING3_SS
|
|
|
|
#define __HYPERVISOR_VIRT_START_PAE 0xF5800000
|
|
#define __MACH2PHYS_VIRT_START_PAE 0xF5800000
|
|
#define __MACH2PHYS_VIRT_END_PAE 0xF6800000
|
|
#define HYPERVISOR_VIRT_START_PAE \
|
|
mk_unsigned_long(__HYPERVISOR_VIRT_START_PAE)
|
|
#define MACH2PHYS_VIRT_START_PAE \
|
|
mk_unsigned_long(__MACH2PHYS_VIRT_START_PAE)
|
|
#define MACH2PHYS_VIRT_END_PAE \
|
|
mk_unsigned_long(__MACH2PHYS_VIRT_END_PAE)
|
|
|
|
/* Non-PAE bounds are obsolete. */
|
|
#define __HYPERVISOR_VIRT_START_NONPAE 0xFC000000
|
|
#define __MACH2PHYS_VIRT_START_NONPAE 0xFC000000
|
|
#define __MACH2PHYS_VIRT_END_NONPAE 0xFC400000
|
|
#define HYPERVISOR_VIRT_START_NONPAE \
|
|
mk_unsigned_long(__HYPERVISOR_VIRT_START_NONPAE)
|
|
#define MACH2PHYS_VIRT_START_NONPAE \
|
|
mk_unsigned_long(__MACH2PHYS_VIRT_START_NONPAE)
|
|
#define MACH2PHYS_VIRT_END_NONPAE \
|
|
mk_unsigned_long(__MACH2PHYS_VIRT_END_NONPAE)
|
|
|
|
#define __HYPERVISOR_VIRT_START __HYPERVISOR_VIRT_START_PAE
|
|
#define __MACH2PHYS_VIRT_START __MACH2PHYS_VIRT_START_PAE
|
|
#define __MACH2PHYS_VIRT_END __MACH2PHYS_VIRT_END_PAE
|
|
|
|
#ifndef HYPERVISOR_VIRT_START
|
|
#define HYPERVISOR_VIRT_START mk_unsigned_long(__HYPERVISOR_VIRT_START)
|
|
#endif
|
|
|
|
#define MACH2PHYS_VIRT_START mk_unsigned_long(__MACH2PHYS_VIRT_START)
|
|
#define MACH2PHYS_VIRT_END mk_unsigned_long(__MACH2PHYS_VIRT_END)
|
|
#define MACH2PHYS_NR_ENTRIES ((MACH2PHYS_VIRT_END-MACH2PHYS_VIRT_START)>>2)
|
|
#ifndef machine_to_phys_mapping
|
|
#define machine_to_phys_mapping ((unsigned long *)MACH2PHYS_VIRT_START)
|
|
#endif
|
|
|
|
/* 32-/64-bit invariability for control interfaces (domctl/sysctl). */
|
|
#if defined(__XEN__) || defined(__XEN_TOOLS__)
|
|
#undef ___DEFINE_XEN_GUEST_HANDLE
|
|
#define ___DEFINE_XEN_GUEST_HANDLE(name, type) \
|
|
typedef struct { type *p; } \
|
|
__guest_handle_ ## name; \
|
|
typedef struct { union { type *p; uint64_aligned_t q; }; } \
|
|
__guest_handle_64_ ## name
|
|
#undef set_xen_guest_handle_raw
|
|
#define set_xen_guest_handle_raw(hnd, val) \
|
|
do { if ( sizeof(hnd) == 8 ) *(uint64_t *)&(hnd) = 0; \
|
|
(hnd).p = val; \
|
|
} while ( 0 )
|
|
#define uint64_aligned_t uint64_t __attribute__((aligned(8)))
|
|
#define __XEN_GUEST_HANDLE_64(name) __guest_handle_64_ ## name
|
|
#define XEN_GUEST_HANDLE_64(name) __XEN_GUEST_HANDLE_64(name)
|
|
#endif
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
struct cpu_user_regs {
|
|
uint32_t ebx;
|
|
uint32_t ecx;
|
|
uint32_t edx;
|
|
uint32_t esi;
|
|
uint32_t edi;
|
|
uint32_t ebp;
|
|
uint32_t eax;
|
|
uint16_t error_code; /* private */
|
|
uint16_t entry_vector; /* private */
|
|
uint32_t eip;
|
|
uint16_t cs;
|
|
uint8_t saved_upcall_mask;
|
|
uint8_t _pad0;
|
|
uint32_t eflags; /* eflags.IF == !saved_upcall_mask */
|
|
uint32_t esp;
|
|
uint16_t ss, _pad1;
|
|
uint16_t es, _pad2;
|
|
uint16_t ds, _pad3;
|
|
uint16_t fs, _pad4;
|
|
uint16_t gs, _pad5;
|
|
};
|
|
typedef struct cpu_user_regs cpu_user_regs_t;
|
|
DEFINE_XEN_GUEST_HANDLE(cpu_user_regs_t);
|
|
|
|
/*
|
|
* Page-directory addresses above 4GB do not fit into architectural %cr3.
|
|
* When accessing %cr3, or equivalent field in vcpu_guest_context, guests
|
|
* must use the following accessor macros to pack/unpack valid MFNs.
|
|
*/
|
|
#define xen_pfn_to_cr3(pfn) (((unsigned)(pfn) << 12) | ((unsigned)(pfn) >> 20))
|
|
#define xen_cr3_to_pfn(cr3) (((unsigned)(cr3) >> 12) | ((unsigned)(cr3) << 20))
|
|
|
|
struct arch_vcpu_info {
|
|
unsigned long cr2;
|
|
unsigned long pad[5]; /* sizeof(vcpu_info_t) == 64 */
|
|
};
|
|
typedef struct arch_vcpu_info arch_vcpu_info_t;
|
|
|
|
struct xen_callback {
|
|
unsigned long cs;
|
|
unsigned long eip;
|
|
};
|
|
typedef struct xen_callback xen_callback_t;
|
|
|
|
#endif /* !__ASSEMBLY__ */
|
|
|
|
#endif /* __XEN_PUBLIC_ARCH_X86_XEN_X86_32_H__ */
|
|
|
|
/*
|
|
* Local variables:
|
|
* mode: C
|
|
* c-file-style: "BSD"
|
|
* c-basic-offset: 4
|
|
* tab-width: 4
|
|
* indent-tabs-mode: nil
|
|
* End:
|
|
*/
|