2 * This file is part of the Palacios Virtual Machine Monitor developed
3 * by the V3VEE Project with funding from the United States National
4 * Science Foundation and the Department of Energy.
6 * The V3VEE Project is a joint project between Northwestern University
7 * and the University of New Mexico. You can find out more at
10 * Copyright (c) 2008, Jack Lange <jarusl@cs.northwestern.edu>
11 * Copyright (c) 2008, The V3VEE Project <http://www.v3vee.org>
12 * All rights reserved.
14 * Author: Jack Lange <jarusl@cs.northwestern.edu>
16 * This is free software. You are permitted to use,
17 * redistribute, and modify it as specified in the file "V3VEE_LICENSE".
23 #include <palacios/vm_guest.h>
24 #include <palacios/vmm_ctrl_regs.h>
25 #include <palacios/vmm.h>
26 #include <palacios/vmm_decoder.h>
27 #include <palacios/vmcb.h>
28 #include <palacios/vm_guest_mem.h>
29 #include <palacios/vmm_lowlevel.h>
30 #include <palacios/vmm_sprintf.h>
34 v3_cpu_mode_t v3_get_vm_cpu_mode(struct guest_info * info) {
36 struct efer_64 * efer;
37 struct cr4_32 * cr4 = (struct cr4_32 *)&(info->ctrl_regs.cr4);
38 struct v3_segment * cs = &(info->segments.cs);
39 vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA((vmcb_t*)(info->vmm_data));
41 if (info->shdw_pg_mode == SHADOW_PAGING) {
42 cr0 = (struct cr0_32 *)&(info->shdw_pg_state.guest_cr0);
43 efer = (struct efer_64 *)&(info->shdw_pg_state.guest_efer);
44 } else if (info->shdw_pg_mode == NESTED_PAGING) {
45 cr0 = (struct cr0_32 *)&(info->ctrl_regs.cr0);
46 efer = (struct efer_64 *)&(guest_state->efer);
48 PrintError("Invalid Paging Mode...\n");
55 } else if ((cr4->pae == 0) && (efer->lme == 0)) {
57 } else if (efer->lme == 0) {
59 } else if ((efer->lme == 1) && (cs->long_mode == 1)) {
62 // What about LONG_16_COMPAT???
63 return LONG_32_COMPAT;
67 // Get address width in bytes
68 uint_t v3_get_addr_width(struct guest_info * info) {
70 struct cr4_32 * cr4 = (struct cr4_32 *)&(info->ctrl_regs.cr4);
71 struct efer_64 * efer;
72 struct v3_segment * cs = &(info->segments.cs);
73 vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA((vmcb_t*)(info->vmm_data));
75 if (info->shdw_pg_mode == SHADOW_PAGING) {
76 cr0 = (struct cr0_32 *)&(info->shdw_pg_state.guest_cr0);
77 efer = (struct efer_64 *)&(info->shdw_pg_state.guest_efer);
78 } else if (info->shdw_pg_mode == NESTED_PAGING) {
79 cr0 = (struct cr0_32 *)&(info->ctrl_regs.cr0);
80 efer = (struct efer_64 *)&(guest_state->efer);
82 PrintError("Invalid Paging Mode...\n");
89 } else if ((cr4->pae == 0) && (efer->lme == 0)) {
91 } else if (efer->lme == 0) {
93 } else if ((efer->lme == 1) && (cs->long_mode == 1)) {
96 // What about LONG_16_COMPAT???
102 static const uchar_t REAL_STR[] = "Real";
103 static const uchar_t PROTECTED_STR[] = "Protected";
104 static const uchar_t PROTECTED_PAE_STR[] = "Protected+PAE";
105 static const uchar_t LONG_STR[] = "Long";
106 static const uchar_t LONG_32_COMPAT_STR[] = "32bit Compat";
107 static const uchar_t LONG_16_COMPAT_STR[] = "16bit Compat";
109 const uchar_t * v3_cpu_mode_to_str(v3_cpu_mode_t mode) {
114 return PROTECTED_STR;
116 return PROTECTED_PAE_STR;
120 return LONG_32_COMPAT_STR;
122 return LONG_16_COMPAT_STR;
128 v3_mem_mode_t v3_get_vm_mem_mode(struct guest_info * info) {
131 if (info->shdw_pg_mode == SHADOW_PAGING) {
132 cr0 = (struct cr0_32 *)&(info->shdw_pg_state.guest_cr0);
133 } else if (info->shdw_pg_mode == NESTED_PAGING) {
134 cr0 = (struct cr0_32 *)&(info->ctrl_regs.cr0);
136 PrintError("Invalid Paging Mode...\n");
148 static const uchar_t PHYS_MEM_STR[] = "Physical Memory";
149 static const uchar_t VIRT_MEM_STR[] = "Virtual Memory";
151 const uchar_t * v3_mem_mode_to_str(v3_mem_mode_t mode) {
163 void v3_print_segments(struct guest_info * info) {
164 struct v3_segments * segs = &(info->segments);
166 struct v3_segment * seg_ptr;
168 seg_ptr=(struct v3_segment *)segs;
170 char *seg_names[] = {"CS", "DS" , "ES", "FS", "GS", "SS" , "LDTR", "GDTR", "IDTR", "TR", NULL};
171 V3_Print("Segments\n");
173 for (i = 0; seg_names[i] != NULL; i++) {
175 V3_Print("\t%s: Sel=%x, base=%p, limit=%x (long_mode=%d, db=%d)\n", seg_names[i], seg_ptr[i].selector,
176 (void *)(addr_t)seg_ptr[i].base, seg_ptr[i].limit,
177 seg_ptr[i].long_mode, seg_ptr[i].db);
183 // We don't handle those fancy 64 bit system segments...
185 int v3_translate_segment(struct guest_info * info, uint16_t selector, struct v3_segment * seg) {
186 struct v3_segment * gdt = &(info->segments.gdtr);
188 uint16_t seg_offset = (selector & ~0x7);
190 struct gen_segment * gen_seg = NULL;
191 struct seg_selector sel;
193 memset(seg, 0, sizeof(struct v3_segment));
195 sel.value = selector;
198 PrintError("LDT translations not supported\n");
202 if (guest_va_to_host_va(info, gdt->base, &gdt_addr) == -1) {
203 PrintError("Unable to translate GDT address\n");
207 seg_addr = gdt_addr + seg_offset;
208 gen_seg = (struct gen_segment *)seg_addr;
211 seg->selector = selector;
213 seg->limit = gen_seg->limit_hi;
215 seg->limit += gen_seg->limit_lo;
217 seg->base = gen_seg->base_hi;
219 seg->base += gen_seg->base_lo;
221 if (gen_seg->granularity == 1) {
226 seg->type = gen_seg->type;
227 seg->system = gen_seg->system;
228 seg->dpl = gen_seg->dpl;
229 seg->present = gen_seg->present;
230 seg->avail = gen_seg->avail;
231 seg->long_mode = gen_seg->long_mode;
232 seg->db = gen_seg->db;
233 seg->granularity = gen_seg->granularity;
241 void v3_print_ctrl_regs(struct guest_info * info) {
242 struct v3_ctrl_regs * regs = &(info->ctrl_regs);
245 char * reg_names[] = {"CR0", "CR2", "CR3", "CR4", "CR8", "FLAGS", NULL};
246 vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA(info->vmm_data);
248 reg_ptr = (v3_reg_t *)regs;
250 V3_Print("32 bit Ctrl Regs:\n");
252 for (i = 0; reg_names[i] != NULL; i++) {
253 V3_Print("\t%s=0x%p\n", reg_names[i], (void *)(addr_t)reg_ptr[i]);
256 V3_Print("\tEFER=0x%p\n", (void*)(addr_t)(guest_state->efer));
261 void v3_print_guest_state(struct guest_info * info) {
262 addr_t linear_addr = 0;
264 V3_Print("RIP: %p\n", (void *)(addr_t)(info->rip));
265 linear_addr = get_addr_linear(info, info->rip, &(info->segments.cs));
266 V3_Print("RIP Linear: %p\n", (void *)linear_addr);
268 V3_Print("NumExits: %u\n", (uint32_t)info->num_exits);
270 v3_print_segments(info);
271 v3_print_ctrl_regs(info);
273 if (info->shdw_pg_mode == SHADOW_PAGING) {
274 V3_Print("Shadow Paging Guest Registers:\n");
275 V3_Print("\tGuest CR0=%p\n", (void *)(addr_t)(info->shdw_pg_state.guest_cr0));
276 V3_Print("\tGuest CR3=%p\n", (void *)(addr_t)(info->shdw_pg_state.guest_cr3));
277 V3_Print("\tGuest EFER=%p\n", (void *)(addr_t)(info->shdw_pg_state.guest_efer.value));
282 v3_print_stack(info);
286 void v3_print_stack(struct guest_info * info) {
287 addr_t linear_addr = 0;
288 addr_t host_addr = 0;
290 v3_cpu_mode_t cpu_mode = v3_get_vm_cpu_mode(info);
293 linear_addr = get_addr_linear(info, info->vm_regs.rsp, &(info->segments.ss));
295 V3_Print("Stack at %p:\n", (void *)linear_addr);
297 if (info->mem_mode == PHYSICAL_MEM) {
298 if (guest_pa_to_host_va(info, linear_addr, &host_addr) == -1) {
299 PrintError("Could not translate Stack address\n");
302 } else if (info->mem_mode == VIRTUAL_MEM) {
303 if (guest_va_to_host_va(info, linear_addr, &host_addr) == -1) {
304 PrintError("Could not translate Virtual Stack address\n");
309 V3_Print("Host Address of rsp = 0x%p\n", (void *)host_addr);
311 // We start i at one because the current stack pointer points to an unused stack element
312 for (i = 0; i <= 24; i++) {
313 if (cpu_mode == LONG) {
314 V3_Print("\t%p\n", (void *)*(uint64_t *)(host_addr + (i * 8)));
315 } else if (cpu_mode == REAL) {
316 V3_Print("Don't currently handle 16 bit stacks... \n");
319 V3_Print("\t%.8x\n", *(uint32_t *)(host_addr + (i * 4)));
327 void v3_print_GPRs(struct guest_info * info) {
328 struct v3_gprs * regs = &(info->vm_regs);
331 char * reg_names[] = { "RDI", "RSI", "RBP", "RSP", "RBX", "RDX", "RCX", "RAX", NULL};
333 reg_ptr= (v3_reg_t *)regs;
335 V3_Print("32 bit GPRs:\n");
337 for (i = 0; reg_names[i] != NULL; i++) {
338 V3_Print("\t%s=0x%p\n", reg_names[i], (void *)(addr_t)reg_ptr[i]);
344 void v3_print_GPRs(struct guest_info * info) {
345 struct v3_gprs * regs = &(info->vm_regs);
348 char * reg_names[] = { "RDI", "RSI", "RBP", "RSP", "RBX", "RDX", "RCX", "RAX", \
349 "R8", "R9", "R10", "R11", "R12", "R13", "R14", "R15", NULL};
351 reg_ptr = (v3_reg_t *)regs;
353 V3_Print("64 bit GPRs:\n");
355 for (i = 0; reg_names[i] != NULL; i++) {
356 V3_Print("\t%s=0x%p\n", reg_names[i], (void *)(addr_t)reg_ptr[i]);