include/arch/sh4/vcpu.h

   1 /*
   2 ** Copyright 2001, Travis Geiselbrecht. All rights reserved.
   3 ** Distributed under the terms of the NewOS License.
   4 */
   5 #ifndef _VCPU_H
   6 #define _VCPU_H
   7
   8 #include <boot/stage2.h>
   9
  10 // layout of the iframe is defined in boot/sh4/vcpu.S
  11 struct iframe {
  12         unsigned int page_fault_addr;
  13         unsigned int excode;
  14         unsigned int spc;
  15         unsigned int ssr;
  16         unsigned int sgr;
  17         unsigned int pr;
  18         unsigned int macl;
  19         unsigned int mach;
  20         unsigned int gbr;
  21         unsigned int fpscr;
  22         unsigned int fpul;
  23
  24         float   fr15_1;
  25         float   fr14_1;
  26         float   fr13_1;
  27         float   fr12_1;
  28         float   fr11_1;
  29         float   fr10_1;
  30         float   fr9_1;
  31         float   fr8_1;
  32         float   fr7_1;
  33         float   fr6_1;
  34         float   fr5_1;
  35         float   fr4_1;
  36         float   fr3_1;
  37         float   fr2_1;
  38         float   fr1_1;
  39         float   fr0_1;
  40
  41         float   fr15_0;
  42         float   fr14_0;
  43         float   fr13_0;
  44         float   fr12_0;
  45         float   fr11_0;
  46         float   fr10_0;
  47         float   fr9_0;
  48         float   fr8_0;
  49         float   fr7_0;
  50         float   fr6_0;
  51         float   fr5_0;
  52         float   fr4_0;
  53         float   fr3_0;
  54         float   fr2_0;
  55         float   fr1_0;
  56         float   fr0_0;
  57
  58         unsigned int r7;
  59         unsigned int r6;
  60         unsigned int r5;
  61         unsigned int r4;
  62         unsigned int r3;
  63         unsigned int r2;
  64         unsigned int r1;
  65         unsigned int r0;
  66         unsigned int r14;
  67         unsigned int r13;
  68         unsigned int r12;
  69         unsigned int r11;
  70         unsigned int r10;
  71         unsigned int r9;
  72         unsigned int r8;
  73 };
  74
  75 // page table structures
  76 struct pdent {
  77         unsigned int v:1;
  78         unsigned int unused0:11;
  79         unsigned int ppn:17;
  80         unsigned int unused1:3;
  81 };
  82
  83 struct ptent {
  84         unsigned int v:1;
  85         unsigned int d:1;
  86         unsigned int sh:1;
  87         unsigned int sz:2;
  88         unsigned int c:1;
  89         unsigned int tlb_ent:6;
  90         unsigned int ppn:17;
  91         unsigned int pr:2;
  92         unsigned int wt:1;
  93 };
  94
  95 // soft faults
  96 #define EXCEPTION_PAGE_FAULT_READ 0xfe
  97 #define EXCEPTION_PAGE_FAULT_WRITE 0xff
  98
  99 // can only be used in stage2
 100 int vcpu_init(kernel_args *ka);
 101
 102 #endif
 103