72c28509fa
Get actual version of include/xen/xen.h from the Xen repository in order to be able to use constants defined there. Signed-off-by: Juergen Gross <jgross@suse.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
202 lines
6.7 KiB
C
202 lines
6.7 KiB
C
/******************************************************************************
|
|
* xen-x86_64.h
|
|
*
|
|
* Guest OS interface to x86 64-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) 2004-2006, K A Fraser
|
|
*/
|
|
|
|
#ifndef __XEN_PUBLIC_ARCH_X86_XEN_X86_64_H__
|
|
#define __XEN_PUBLIC_ARCH_X86_XEN_X86_64_H__
|
|
|
|
/*
|
|
* Hypercall interface:
|
|
* Input: %rdi, %rsi, %rdx, %r10, %r8, %r9 (arguments 1-6)
|
|
* Output: %rax
|
|
* 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 %rdi,%rsi)
|
|
*/
|
|
|
|
/*
|
|
* 64-bit segment selectors
|
|
* 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_RING3_CS32 0xe023 /* GDT index 260 */
|
|
#define FLAT_RING3_CS64 0xe033 /* GDT index 261 */
|
|
#define FLAT_RING3_DS32 0xe02b /* GDT index 262 */
|
|
#define FLAT_RING3_DS64 0x0000 /* NULL selector */
|
|
#define FLAT_RING3_SS32 0xe02b /* GDT index 262 */
|
|
#define FLAT_RING3_SS64 0xe02b /* GDT index 262 */
|
|
|
|
#define FLAT_KERNEL_DS64 FLAT_RING3_DS64
|
|
#define FLAT_KERNEL_DS32 FLAT_RING3_DS32
|
|
#define FLAT_KERNEL_DS FLAT_KERNEL_DS64
|
|
#define FLAT_KERNEL_CS64 FLAT_RING3_CS64
|
|
#define FLAT_KERNEL_CS32 FLAT_RING3_CS32
|
|
#define FLAT_KERNEL_CS FLAT_KERNEL_CS64
|
|
#define FLAT_KERNEL_SS64 FLAT_RING3_SS64
|
|
#define FLAT_KERNEL_SS32 FLAT_RING3_SS32
|
|
#define FLAT_KERNEL_SS FLAT_KERNEL_SS64
|
|
|
|
#define FLAT_USER_DS64 FLAT_RING3_DS64
|
|
#define FLAT_USER_DS32 FLAT_RING3_DS32
|
|
#define FLAT_USER_DS FLAT_USER_DS64
|
|
#define FLAT_USER_CS64 FLAT_RING3_CS64
|
|
#define FLAT_USER_CS32 FLAT_RING3_CS32
|
|
#define FLAT_USER_CS FLAT_USER_CS64
|
|
#define FLAT_USER_SS64 FLAT_RING3_SS64
|
|
#define FLAT_USER_SS32 FLAT_RING3_SS32
|
|
#define FLAT_USER_SS FLAT_USER_SS64
|
|
|
|
#define __HYPERVISOR_VIRT_START 0xFFFF800000000000
|
|
#define __HYPERVISOR_VIRT_END 0xFFFF880000000000
|
|
#define __MACH2PHYS_VIRT_START 0xFFFF800000000000
|
|
#define __MACH2PHYS_VIRT_END 0xFFFF804000000000
|
|
|
|
#ifndef HYPERVISOR_VIRT_START
|
|
#define HYPERVISOR_VIRT_START xen_mk_ulong(__HYPERVISOR_VIRT_START)
|
|
#define HYPERVISOR_VIRT_END xen_mk_ulong(__HYPERVISOR_VIRT_END)
|
|
#endif
|
|
|
|
#define MACH2PHYS_VIRT_START xen_mk_ulong(__MACH2PHYS_VIRT_START)
|
|
#define MACH2PHYS_VIRT_END xen_mk_ulong(__MACH2PHYS_VIRT_END)
|
|
#define MACH2PHYS_NR_ENTRIES ((MACH2PHYS_VIRT_END-MACH2PHYS_VIRT_START)>>3)
|
|
#ifndef machine_to_phys_mapping
|
|
#define machine_to_phys_mapping ((unsigned long *)HYPERVISOR_VIRT_START)
|
|
#endif
|
|
|
|
/*
|
|
* int HYPERVISOR_set_segment_base(unsigned int which, unsigned long base)
|
|
* @which == SEGBASE_* ; @base == 64-bit base address
|
|
* Returns 0 on success.
|
|
*/
|
|
#define SEGBASE_FS 0
|
|
#define SEGBASE_GS_USER 1
|
|
#define SEGBASE_GS_KERNEL 2
|
|
#define SEGBASE_GS_USER_SEL 3 /* Set user %gs specified in base[15:0] */
|
|
|
|
/*
|
|
* int HYPERVISOR_iret(void)
|
|
* All arguments are on the kernel stack, in the following format.
|
|
* Never returns if successful. Current kernel context is lost.
|
|
* The saved CS is mapped as follows:
|
|
* RING0 -> RING3 kernel mode.
|
|
* RING1 -> RING3 kernel mode.
|
|
* RING2 -> RING3 kernel mode.
|
|
* RING3 -> RING3 user mode.
|
|
* However RING0 indicates that the guest kernel should return to iteself
|
|
* directly with
|
|
* orb $3,1*8(%rsp)
|
|
* iretq
|
|
* If flags contains VGCF_in_syscall:
|
|
* Restore RAX, RIP, RFLAGS, RSP.
|
|
* Discard R11, RCX, CS, SS.
|
|
* Otherwise:
|
|
* Restore RAX, R11, RCX, CS:RIP, RFLAGS, SS:RSP.
|
|
* All other registers are saved on hypercall entry and restored to user.
|
|
*/
|
|
/* Guest exited in SYSCALL context? Return to guest with SYSRET? */
|
|
#define _VGCF_in_syscall 8
|
|
#define VGCF_in_syscall (1<<_VGCF_in_syscall)
|
|
#define VGCF_IN_SYSCALL VGCF_in_syscall
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
struct iret_context {
|
|
/* Top of stack (%rsp at point of hypercall). */
|
|
uint64_t rax, r11, rcx, flags, rip, cs, rflags, rsp, ss;
|
|
/* Bottom of iret stack frame. */
|
|
};
|
|
|
|
#if defined(__GNUC__) && !defined(__STRICT_ANSI__)
|
|
/* Anonymous union includes both 32- and 64-bit names (e.g., eax/rax). */
|
|
#define __DECL_REG(name) union { \
|
|
uint64_t r ## name, e ## name; \
|
|
uint32_t _e ## name; \
|
|
}
|
|
#else
|
|
/* Non-gcc sources must always use the proper 64-bit name (e.g., rax). */
|
|
#define __DECL_REG(name) uint64_t r ## name
|
|
#endif
|
|
|
|
struct cpu_user_regs {
|
|
uint64_t r15;
|
|
uint64_t r14;
|
|
uint64_t r13;
|
|
uint64_t r12;
|
|
__DECL_REG(bp);
|
|
__DECL_REG(bx);
|
|
uint64_t r11;
|
|
uint64_t r10;
|
|
uint64_t r9;
|
|
uint64_t r8;
|
|
__DECL_REG(ax);
|
|
__DECL_REG(cx);
|
|
__DECL_REG(dx);
|
|
__DECL_REG(si);
|
|
__DECL_REG(di);
|
|
uint32_t error_code; /* private */
|
|
uint32_t entry_vector; /* private */
|
|
__DECL_REG(ip);
|
|
uint16_t cs, _pad0[1];
|
|
uint8_t saved_upcall_mask;
|
|
uint8_t _pad1[3];
|
|
__DECL_REG(flags); /* rflags.IF == !saved_upcall_mask */
|
|
__DECL_REG(sp);
|
|
uint16_t ss, _pad2[3];
|
|
uint16_t es, _pad3[3];
|
|
uint16_t ds, _pad4[3];
|
|
uint16_t fs, _pad5[3]; /* Non-zero => takes precedence over fs_base. */
|
|
uint16_t gs, _pad6[3]; /* Non-zero => takes precedence over gs_base_usr. */
|
|
};
|
|
typedef struct cpu_user_regs cpu_user_regs_t;
|
|
DEFINE_XEN_GUEST_HANDLE(cpu_user_regs_t);
|
|
|
|
#undef __DECL_REG
|
|
|
|
#define xen_pfn_to_cr3(pfn) ((unsigned long)(pfn) << 12)
|
|
#define xen_cr3_to_pfn(cr3) ((unsigned long)(cr3) >> 12)
|
|
|
|
struct arch_vcpu_info {
|
|
unsigned long cr2;
|
|
unsigned long pad; /* sizeof(vcpu_info_t) == 64 */
|
|
};
|
|
typedef struct arch_vcpu_info arch_vcpu_info_t;
|
|
|
|
typedef unsigned long xen_callback_t;
|
|
|
|
#endif /* !__ASSEMBLY__ */
|
|
|
|
#endif /* __XEN_PUBLIC_ARCH_X86_XEN_X86_64_H__ */
|
|
|
|
/*
|
|
* Local variables:
|
|
* mode: C
|
|
* c-file-style: "BSD"
|
|
* c-basic-offset: 4
|
|
* tab-width: 4
|
|
* indent-tabs-mode: nil
|
|
* End:
|
|
*/
|