The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/xen/interface/arch-powerpc.h

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    1 /*
    2  * Permission is hereby granted, free of charge, to any person obtaining a copy
    3  * of this software and associated documentation files (the "Software"), to
    4  * deal in the Software without restriction, including without limitation the
    5  * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
    6  * sell copies of the Software, and to permit persons to whom the Software is
    7  * furnished to do so, subject to the following conditions:
    8  *
    9  * The above copyright notice and this permission notice shall be included in
   10  * all copies or substantial portions of the Software.
   11  *
   12  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   13  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   14  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   15  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   16  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
   17  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
   18  * DEALINGS IN THE SOFTWARE.
   19  *
   20  * Copyright (C) IBM Corp. 2005, 2006
   21  *
   22  * Authors: Hollis Blanchard <hollisb@us.ibm.com>
   23  */
   24 
   25 #include "xen.h"
   26 
   27 #ifndef __XEN_PUBLIC_ARCH_PPC_64_H__
   28 #define __XEN_PUBLIC_ARCH_PPC_64_H__
   29 
   30 #define ___DEFINE_XEN_GUEST_HANDLE(name, type) \
   31     typedef struct { \
   32         int __pad[(sizeof (long long) - sizeof (void *)) / sizeof (int)]; \
   33         type *p; \
   34     } __attribute__((__aligned__(8))) __guest_handle_ ## name
   35 
   36 #define __DEFINE_XEN_GUEST_HANDLE(name, type) \
   37     ___DEFINE_XEN_GUEST_HANDLE(name, type);   \
   38     ___DEFINE_XEN_GUEST_HANDLE(const_##name, const type)
   39 #define DEFINE_XEN_GUEST_HANDLE(name) __DEFINE_XEN_GUEST_HANDLE(name, name)
   40 #define XEN_GUEST_HANDLE(name)        __guest_handle_ ## name
   41 #define set_xen_guest_handle(hnd, val) \
   42     do { \
   43         if (sizeof ((hnd).__pad)) \
   44             (hnd).__pad[0] = 0; \
   45         (hnd).p = val; \
   46     } while (0)
   47 
   48 #ifdef __XEN_TOOLS__
   49 #define get_xen_guest_handle(val, hnd)  do { val = (hnd).p; } while (0)
   50 #endif
   51 
   52 #ifndef __ASSEMBLY__
   53 typedef unsigned long long xen_pfn_t;
   54 #define PRI_xen_pfn "llx"
   55 #endif
   56 
   57 /*
   58  * Pointers and other address fields inside interface structures are padded to
   59  * 64 bits. This means that field alignments aren't different between 32- and
   60  * 64-bit architectures. 
   61  */
   62 /* NB. Multi-level macro ensures __LINE__ is expanded before concatenation. */
   63 #define __MEMORY_PADDING(_X)
   64 #define _MEMORY_PADDING(_X)  __MEMORY_PADDING(_X)
   65 #define MEMORY_PADDING       _MEMORY_PADDING(__LINE__)
   66 
   67 /* And the trap vector is... */
   68 #define TRAP_INSTR "li 0,-1; sc" /* XXX just "sc"? */
   69 
   70 #ifndef __ASSEMBLY__
   71 
   72 #define XENCOMM_INLINE_FLAG (1UL << 63)
   73 
   74 typedef uint64_t xen_ulong_t;
   75 
   76 /* User-accessible registers: nost of these need to be saved/restored
   77  * for every nested Xen invocation. */
   78 struct cpu_user_regs
   79 {
   80     uint64_t gprs[32];
   81     uint64_t lr;
   82     uint64_t ctr;
   83     uint64_t srr0;
   84     uint64_t srr1;
   85     uint64_t pc;
   86     uint64_t msr;
   87     uint64_t fpscr;             /* XXX Is this necessary */
   88     uint64_t xer;
   89     uint64_t hid4;              /* debug only */
   90     uint64_t dar;               /* debug only */
   91     uint32_t dsisr;             /* debug only */
   92     uint32_t cr;
   93     uint32_t __pad;             /* good spot for another 32bit reg */
   94     uint32_t entry_vector;
   95 };
   96 typedef struct cpu_user_regs cpu_user_regs_t;
   97 
   98 typedef uint64_t tsc_timestamp_t; /* RDTSC timestamp */ /* XXX timebase */
   99 
  100 /* ONLY used to communicate with dom0! See also struct exec_domain. */
  101 struct vcpu_guest_context {
  102     cpu_user_regs_t user_regs;         /* User-level CPU registers     */
  103     uint64_t sdr1;                     /* Pagetable base               */
  104     /* XXX etc */
  105 };
  106 typedef struct vcpu_guest_context vcpu_guest_context_t;
  107 DEFINE_XEN_GUEST_HANDLE(vcpu_guest_context_t);
  108 
  109 struct arch_shared_info {
  110     uint64_t boot_timebase;
  111 };
  112 
  113 struct arch_vcpu_info {
  114 };
  115 
  116 /* Support for multi-processor guests. */
  117 #define MAX_VIRT_CPUS 32
  118 #endif
  119 
  120 #endif

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