1 #include <palacios/svm_handler.h>
2 #include <palacios/vmm.h>
3 #include <palacios/vm_guest_mem.h>
4 #include <palacios/vmm_emulate.h>
5 #include <palacios/vmm_ctrl_regs.h>
6 #include <palacios/svm_io.h>
7 #include <palacios/vmm_intr.h>
10 extern struct vmm_os_hooks * os_hooks;
13 int handle_svm_exit(struct guest_info * info) {
14 vmcb_ctrl_t * guest_ctrl = 0;
15 vmcb_saved_state_t * guest_state = 0;
16 ulong_t exit_code = 0;
18 guest_ctrl = GET_VMCB_CTRL_AREA((vmcb_t*)(info->vmm_data));
19 guest_state = GET_VMCB_SAVE_STATE_AREA((vmcb_t*)(info->vmm_data));
22 // Update the high level state
23 info->rip = guest_state->rip;
24 info->vm_regs.rsp = guest_state->rsp;
25 info->vm_regs.rax = guest_state->rax;
26 info->vm_regs.rsp = guest_state->rsp;
29 info->ctrl_regs.cr0 = guest_state->cr0;
30 info->ctrl_regs.cr2 = guest_state->cr2;
31 info->ctrl_regs.cr3 = guest_state->cr3;
32 info->ctrl_regs.cr4 = guest_state->cr4;
33 info->ctrl_regs.cr8 = guest_ctrl->guest_ctrl.V_TPR;
34 info->ctrl_regs.rflags = guest_state->rflags;
36 get_vmcb_segments((vmcb_t*)(info->vmm_data), &(info->segments));
39 exit_code = guest_ctrl->exit_code;
41 PrintDebug("SVM Returned: Exit Code: %x\n",exit_code);
42 // PrintDebugVMCB((vmcb_t*)(info->vmm_data));
45 // PrintDebug("SVM Returned:(VMCB=%x)\n", info->vmm_data);
46 //PrintDebug("RIP: %x\n", guest_state->rip);
49 //PrintDebug("SVM Returned: Exit Code: %x\n",exit_code);
51 if (exit_code == VMEXIT_IOIO) {
52 struct svm_io_info * io_info = (struct svm_io_info *)&(guest_ctrl->exit_info1);
54 if (io_info->type == 0) {
56 if (handle_svm_io_outs(info) == -1 ) {
60 if (handle_svm_io_out(info) == -1) {
66 if (handle_svm_io_ins(info) == -1) {
70 if (handle_svm_io_in(info) == -1) {
75 } else if (exit_code == VMEXIT_CR0_WRITE) {
76 PrintDebug("CR0 Write\n");
78 if (handle_cr0_write(info) == -1) {
81 } else if (exit_code == VMEXIT_CR0_READ) {
82 PrintDebug("CR0 Read\n");
84 if (handle_cr0_read(info) == -1) {
87 } else if (exit_code == VMEXIT_CR3_WRITE) {
88 PrintDebug("CR3 Write\n");
90 if (handle_cr3_write(info) == -1) {
93 } else if (exit_code == VMEXIT_CR3_READ) {
94 PrintDebug("CR3 Read\n");
96 if (handle_cr3_read(info) == -1) {
100 } else if (exit_code == VMEXIT_EXCP14) {
101 addr_t fault_addr = guest_ctrl->exit_info2;
102 pf_error_t * error_code = (pf_error_t *)&(guest_ctrl->exit_info1);
104 PrintDebug("PageFault at %x (error=%d)\n", fault_addr, *error_code);
108 if (handle_shadow_pagefault(info, fault_addr, *error_code) == -1) {
113 } else if (( (exit_code == VMEXIT_CR3_READ) ||
114 (exit_code == VMEXIT_CR3_WRITE) ||
115 (exit_code == VMEXIT_INVLPG) ||
116 (exit_code == VMEXIT_INVLPGA) ||
117 (exit_code == VMEXIT_EXCP14)) &&
118 (info->page_mode == SHADOW_PAGING)) {
119 handle_shadow_paging(info);
122 } else if (exit_code == VMEXIT_INTR) {
124 // handle_svm_intr(info);
126 } else if (exit_code == VMEXIT_HLT) {
127 PrintDebug("Guest halted\n");
135 rip_addr = get_addr_linear(info, guest_state->rip, &(info->segments.cs));
139 PrintDebug("SVM Returned:(VMCB=%x)\n", info->vmm_data);
140 PrintDebug("RIP: %x\n", guest_state->rip);
141 PrintDebug("RIP Linear: %x\n", rip_addr);
143 PrintDebug("SVM Returned: Exit Code: %x\n",exit_code);
145 PrintDebug("io_info1 low = 0x%.8x\n", *(uint_t*)&(guest_ctrl->exit_info1));
146 PrintDebug("io_info1 high = 0x%.8x\n", *(uint_t *)(((uchar_t *)&(guest_ctrl->exit_info1)) + 4));
148 PrintDebug("io_info2 low = 0x%.8x\n", *(uint_t*)&(guest_ctrl->exit_info2));
149 PrintDebug("io_info2 high = 0x%.8x\n", *(uint_t *)(((uchar_t *)&(guest_ctrl->exit_info2)) + 4));
153 if (guest_pa_to_host_pa(info, guest_state->rip, &host_addr) == -1) {
154 PrintDebug("Could not translate guest_state->rip to host address\n");
158 PrintDebug("Host Address of rip = 0x%x\n", host_addr);
162 PrintDebug("Reading from 0x%x in guest\n", rip_addr);
164 read_guest_pa_memory(info, rip_addr, 15, buf);
166 PrintTraceMemDump(buf, 15);
173 // Update the low level state
175 if (intr_pending(info)) {
177 switch (get_intr_type(info)) {
180 uint_t irq = get_intr_number(info);
181 guest_ctrl->EVENTINJ.vector = irq;
182 guest_ctrl->EVENTINJ.valid = 1;
183 guest_ctrl->EVENTINJ.type = SVM_INJECTION_EXTERNAL_INTR;
185 injecting_intr(info, irq, EXTERNAL_IRQ);
190 guest_ctrl->EVENTINJ.type = SVM_INJECTION_NMI;
194 uint_t excp = get_intr_number(info);
196 guest_ctrl->EVENTINJ.type = SVM_INJECTION_EXCEPTION;
198 if (info->intr_state.excp_error_code) {
199 guest_ctrl->EVENTINJ.error_code = info->intr_state.excp_error_code;
200 guest_ctrl->EVENTINJ.ev = 1;
203 guest_ctrl->EVENTINJ.vector = excp;
205 injecting_intr(info, excp, EXCEPTION);
209 guest_ctrl->EVENTINJ.type = SVM_INJECTION_SOFT_INTR;
212 guest_ctrl->EVENTINJ.type = SVM_INJECTION_VIRTUAL_INTR;
217 PrintDebug("Attempted to issue an invalid interrupt\n");
222 PrintDebug("Injecting Interrupt %d (EIP=%x)\n", guest_ctrl->EVENTINJ.vector, info->rip);
226 // We need to figure out stack parameters....
228 //EVENTINJ.error_code
233 guest_state->cr0 = info->ctrl_regs.cr0;
234 guest_state->cr2 = info->ctrl_regs.cr2;
235 guest_state->cr3 = info->ctrl_regs.cr3;
236 guest_state->cr4 = info->ctrl_regs.cr4;
237 guest_ctrl->guest_ctrl.V_TPR = info->ctrl_regs.cr8 & 0xff;
238 guest_state->rflags = info->ctrl_regs.rflags;
241 guest_state->rax = info->vm_regs.rax;
242 guest_state->rip = info->rip;
243 guest_state->rsp = info->vm_regs.rsp;
246 set_vmcb_segments((vmcb_t*)(info->vmm_data), &(info->segments));
248 if (exit_code == VMEXIT_INTR) {
249 PrintDebug("INTR ret IP = %x\n", guest_state->rip);
258 int handle_shadow_paging(struct guest_info * info) {
259 vmcb_ctrl_t * guest_ctrl = GET_VMCB_CTRL_AREA((vmcb_t*)(info->vmm_data));
260 // vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA((vmcb_t*)(info->vmm_data));
262 if (guest_ctrl->exit_code == VMEXIT_CR3_READ) {
271 int handle_svm_intr(struct guest_info * info) {
272 vmcb_ctrl_t * guest_ctrl = GET_VMCB_CTRL_AREA((vmcb_t*)(info->vmm_data));
273 // vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA((vmcb_t*)(info->vmm_data));
275 //struct Interrupt_Info * int_info = &(guest_ctrl->exit_int_info);
277 //struct vmm_irq_hook * get_irq_hook(&(info->irq_map), int_info->vector);
279 PrintDebug("SVM Returned: Exit Code: %x\n",guest_ctrl->exit_code);
280 PrintDebug("V_INTR_VECTOR: 0x%x\n", guest_ctrl->guest_ctrl.V_INTR_VECTOR);