OvmfPkg/Include/IndustryStandard/Xen/arch-x86/xen-x86_64.h

   1 /******************************************************************************
   2  * xen-x86_64.h
   3  *
   4  * Guest OS interface to x86 64-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) 2004-2006, K A Fraser
  25  */
  26
  27 #ifndef __XEN_PUBLIC_ARCH_X86_XEN_X86_64_H__
  28 #define __XEN_PUBLIC_ARCH_X86_XEN_X86_64_H__
  29
  30 /*
  31  * Hypercall interface:
  32  *  Input:  %rdi, %rsi, %rdx, %r10, %r8, %r9 (arguments 1-6)
  33  *  Output: %rax
  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 %rdi,%rsi)
  37  */
  38
  39 #ifndef __ASSEMBLY__
  40
  41 struct arch_vcpu_info {
  42     UINTN cr2;
  43     UINTN pad; /* sizeof(vcpu_info_t) == 64 */
  44 };
  45 typedef struct arch_vcpu_info arch_vcpu_info_t;
  46
  47 #endif /* !__ASSEMBLY__ */
  48
  49 #endif /* __XEN_PUBLIC_ARCH_X86_XEN_X86_64_H__ */
  50
  51 /*
  52  * Local variables:
  53  * mode: C
  54  * c-file-style: "BSD"
  55  * c-basic-offset: 4
  56  * tab-width: 4
  57  * indent-tabs-mode: nil
  58  * End:
  59  */