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/svm_ctrl_regs.h>
6 #include <palacios/svm_io.h>
7 #include <palacios/vmm_intr.h>
9 extern struct vmm_os_hooks * os_hooks;
12 int handle_svm_exit(struct guest_info * info) {
13 vmcb_ctrl_t * guest_ctrl = 0;
14 vmcb_saved_state_t * guest_state = 0;
15 ulong_t exit_code = 0;
17 guest_ctrl = GET_VMCB_CTRL_AREA((vmcb_t*)(info->vmm_data));
18 guest_state = GET_VMCB_SAVE_STATE_AREA((vmcb_t*)(info->vmm_data));
21 // Update the high level state
22 info->rip = guest_state->rip;
23 info->vm_regs.rsp = guest_state->rsp;
24 info->vm_regs.rax = guest_state->rax;
25 info->vm_regs.rsp = guest_state->rsp;
28 exit_code = guest_ctrl->exit_code;
30 PrintDebug("SVM Returned: Exit Code: %x\n",exit_code);
31 // PrintDebugVMCB((vmcb_t*)(info->vmm_data));
34 // PrintDebug("SVM Returned:(VMCB=%x)\n", info->vmm_data);
35 //PrintDebug("RIP: %x\n", guest_state->rip);
38 //PrintDebug("SVM Returned: Exit Code: %x\n",exit_code);
40 if (exit_code == VMEXIT_IOIO) {
41 struct svm_io_info * io_info = (struct svm_io_info *)&(guest_ctrl->exit_info1);
43 if (io_info->type == 0) {
45 if (handle_svm_io_outs(info) == -1 ) {
49 if (handle_svm_io_out(info) == -1) {
55 if (handle_svm_io_ins(info) == -1) {
59 if (handle_svm_io_in(info) == -1) {
64 } else if (exit_code == VMEXIT_CR0_WRITE) {
65 PrintDebug("CR0 Write\n");
67 if (handle_cr0_write(info) == -1) {
70 } else if (exit_code == VMEXIT_CR0_READ) {
71 PrintDebug("CR0 Read\n");
73 if (handle_cr0_read(info) == -1) {
76 } else if (exit_code == VMEXIT_CR3_WRITE) {
77 PrintDebug("CR3 Write\n");
79 if (handle_cr3_write(info) == -1) {
82 } else if (exit_code == VMEXIT_CR3_READ) {
83 PrintDebug("CR3 Read\n");
85 if (handle_cr3_read(info) == -1) {
89 } else if (exit_code == VMEXIT_EXCP14) {
90 addr_t fault_addr = guest_ctrl->exit_info2;
91 pf_error_t * error_code = (pf_error_t *)&(guest_ctrl->exit_info1);
93 PrintDebug("PageFault at %x (error=%d)\n", fault_addr, *error_code);
97 if (handle_shadow_pagefault(info, fault_addr, *error_code) == -1) {
102 } else if (( (exit_code == VMEXIT_CR3_READ) ||
103 (exit_code == VMEXIT_CR3_WRITE) ||
104 (exit_code == VMEXIT_INVLPG) ||
105 (exit_code == VMEXIT_INVLPGA) ||
106 (exit_code == VMEXIT_EXCP14)) &&
107 (info->page_mode == SHADOW_PAGING)) {
108 handle_shadow_paging(info);
111 } else if (exit_code == VMEXIT_INTR) {
113 // handle_svm_intr(info);
115 } else if (exit_code == VMEXIT_HLT) {
116 PrintDebug("Guest halted\n");
123 if (info->cpu_mode == REAL) {
124 rip_addr = get_addr_linear(info, guest_state->rip, guest_state->cs.selector);
126 rip_addr = get_addr_linear(info, guest_state->rip, guest_state->cs.base);
130 PrintDebug("SVM Returned:(VMCB=%x)\n", info->vmm_data);
131 PrintDebug("RIP: %x\n", guest_state->rip);
132 PrintDebug("RIP Linear: %x\n", rip_addr);
134 PrintDebug("SVM Returned: Exit Code: %x\n",exit_code);
136 PrintDebug("io_info1 low = 0x%.8x\n", *(uint_t*)&(guest_ctrl->exit_info1));
137 PrintDebug("io_info1 high = 0x%.8x\n", *(uint_t *)(((uchar_t *)&(guest_ctrl->exit_info1)) + 4));
139 PrintDebug("io_info2 low = 0x%.8x\n", *(uint_t*)&(guest_ctrl->exit_info2));
140 PrintDebug("io_info2 high = 0x%.8x\n", *(uint_t *)(((uchar_t *)&(guest_ctrl->exit_info2)) + 4));
144 if (guest_pa_to_host_pa(info, guest_state->rip, &host_addr) == -1) {
145 PrintDebug("Could not translate guest_state->rip to host address\n");
149 PrintDebug("Host Address of rip = 0x%x\n", host_addr);
153 PrintDebug("Reading from 0x%x in guest\n", rip_addr);
155 read_guest_pa_memory(info, rip_addr, 15, buf);
157 PrintTraceMemDump(buf, 15);
164 // Update the low level state
166 if (intr_pending(&(info->intr_state))) {
168 switch (get_intr_type(&(info->intr_state))) {
170 guest_ctrl->EVENTINJ.vector = get_intr_number(&(info->intr_state));
171 guest_ctrl->EVENTINJ.valid = 1;
172 guest_ctrl->EVENTINJ.type = SVM_INJECTION_EXTERNAL_INTR;
176 guest_ctrl->EVENTINJ.type = SVM_INJECTION_NMI;
179 guest_ctrl->EVENTINJ.type = SVM_INJECTION_EXCEPTION;
180 guest_ctrl->EVENTINJ.error_code = info->intr_state.excp_error_code;
183 guest_ctrl->EVENTINJ.type = SVM_INJECTION_SOFT_INTR;
186 guest_ctrl->EVENTINJ.type = SVM_INJECTION_VIRTUAL_INTR;
191 PrintDebug("Attempted to issue an invalid interrupt\n");
196 PrintDebug("Injecting Interrupt %d (EIP=%x)\n", guest_ctrl->EVENTINJ.vector, info->rip);
200 // We need to figure out stack parameters....
202 //EVENTINJ.error_code
208 guest_state->rax = info->vm_regs.rax;
209 guest_state->rip = info->rip;
210 guest_state->rsp = info->vm_regs.rsp;
212 if (exit_code == VMEXIT_INTR) {
213 PrintDebug("INTR ret IP = %x\n", guest_state->rip);
222 int handle_shadow_paging(struct guest_info * info) {
223 vmcb_ctrl_t * guest_ctrl = GET_VMCB_CTRL_AREA((vmcb_t*)(info->vmm_data));
224 // vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA((vmcb_t*)(info->vmm_data));
226 if (guest_ctrl->exit_code == VMEXIT_CR3_READ) {
235 int handle_svm_intr(struct guest_info * info) {
236 vmcb_ctrl_t * guest_ctrl = GET_VMCB_CTRL_AREA((vmcb_t*)(info->vmm_data));
237 // vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA((vmcb_t*)(info->vmm_data));
239 //struct Interrupt_Info * int_info = &(guest_ctrl->exit_int_info);
241 //struct vmm_irq_hook * get_irq_hook(&(info->irq_map), int_info->vector);
243 PrintDebug("SVM Returned: Exit Code: %x\n",guest_ctrl->exit_code);
244 PrintDebug("V_INTR_VECTOR: 0x%x\n", guest_ctrl->guest_ctrl.V_INTR_VECTOR);