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 int handle_svm_exit(struct guest_info * info) {
11 vmcb_ctrl_t * guest_ctrl = 0;
12 vmcb_saved_state_t * guest_state = 0;
13 ulong_t exit_code = 0;
15 guest_ctrl = GET_VMCB_CTRL_AREA((vmcb_t*)(info->vmm_data));
16 guest_state = GET_VMCB_SAVE_STATE_AREA((vmcb_t*)(info->vmm_data));
19 // Update the high level state
20 info->rip = guest_state->rip;
21 info->vm_regs.rsp = guest_state->rsp;
22 info->vm_regs.rax = guest_state->rax;
24 info->cpl = guest_state->cpl;
27 info->ctrl_regs.cr0 = guest_state->cr0;
28 info->ctrl_regs.cr2 = guest_state->cr2;
29 info->ctrl_regs.cr3 = guest_state->cr3;
30 info->ctrl_regs.cr4 = guest_state->cr4;
31 info->ctrl_regs.cr8 = guest_ctrl->guest_ctrl.V_TPR;
32 info->ctrl_regs.rflags = guest_state->rflags;
34 get_vmcb_segments((vmcb_t*)(info->vmm_data), &(info->segments));
37 exit_code = guest_ctrl->exit_code;
39 //PrintDebug("SVM Returned: Exit Code: %x\n",exit_code);
40 // PrintDebugVMCB((vmcb_t*)(info->vmm_data));
43 // PrintDebug("SVM Returned:(VMCB=%x)\n", info->vmm_data);
44 //PrintDebug("RIP: %x\n", guest_state->rip);
47 //PrintDebug("SVM Returned: Exit Code: %x\n",exit_code);
49 if (exit_code == VMEXIT_IOIO) {
50 struct svm_io_info * io_info = (struct svm_io_info *)&(guest_ctrl->exit_info1);
52 if (io_info->type == 0) {
54 if (handle_svm_io_outs(info) == -1 ) {
58 if (handle_svm_io_out(info) == -1) {
64 if (handle_svm_io_ins(info) == -1) {
68 if (handle_svm_io_in(info) == -1) {
73 } else if (exit_code == VMEXIT_CR0_WRITE) {
74 PrintDebug("CR0 Write\n");
76 if (handle_cr0_write(info) == -1) {
79 } else if (exit_code == VMEXIT_CR0_READ) {
80 PrintDebug("CR0 Read\n");
82 if (handle_cr0_read(info) == -1) {
85 } else if (exit_code == VMEXIT_CR3_WRITE) {
86 PrintDebug("CR3 Write\n");
88 if (handle_cr3_write(info) == -1) {
91 } else if (exit_code == VMEXIT_CR3_READ) {
92 PrintDebug("CR3 Read\n");
94 if (handle_cr3_read(info) == -1) {
98 } else if (exit_code == VMEXIT_EXCP14) {
99 addr_t fault_addr = guest_ctrl->exit_info2;
100 pf_error_t * error_code = (pf_error_t *)&(guest_ctrl->exit_info1);
102 PrintDebug("PageFault at %x (error=%d)\n", fault_addr, *error_code);
104 if (info->page_mode == SHADOW_PAGING) {
105 if (handle_shadow_pagefault(info, fault_addr, *error_code) == -1) {
109 PrintDebug("Page fault in un implemented paging mode\n");
113 } else if (exit_code == VMEXIT_INVLPG) {
114 if (info->page_mode == SHADOW_PAGING) {
115 PrintDebug("Invlpg\n");
116 if (handle_shadow_invlpg(info) == -1) {
122 (exit_code == VMEXIT_INVLPGA) ||
125 } else if (exit_code == VMEXIT_INTR) {
127 // handle_svm_intr(info);
129 } else if (exit_code == VMEXIT_HLT) {
130 PrintDebug("Guest halted\n");
138 rip_addr = get_addr_linear(info, guest_state->rip, &(info->segments.cs));
142 PrintDebug("SVM Returned:(VMCB=%x)\n", info->vmm_data);
143 PrintDebug("RIP: %x\n", guest_state->rip);
144 PrintDebug("RIP Linear: %x\n", rip_addr);
146 PrintDebug("SVM Returned: Exit Code: %x\n",exit_code);
148 PrintDebug("io_info1 low = 0x%.8x\n", *(uint_t*)&(guest_ctrl->exit_info1));
149 PrintDebug("io_info1 high = 0x%.8x\n", *(uint_t *)(((uchar_t *)&(guest_ctrl->exit_info1)) + 4));
151 PrintDebug("io_info2 low = 0x%.8x\n", *(uint_t*)&(guest_ctrl->exit_info2));
152 PrintDebug("io_info2 high = 0x%.8x\n", *(uint_t *)(((uchar_t *)&(guest_ctrl->exit_info2)) + 4));
156 if (guest_pa_to_host_pa(info, guest_state->rip, &host_addr) == -1) {
157 PrintDebug("Could not translate guest_state->rip to host address\n");
161 PrintDebug("Host Address of rip = 0x%x\n", host_addr);
165 PrintDebug("Reading from 0x%x in guest\n", rip_addr);
167 read_guest_pa_memory(info, rip_addr, 15, buf);
169 PrintTraceMemDump(buf, 15);
176 // Update the low level state
178 if (intr_pending(info)) {
180 switch (get_intr_type(info)) {
183 uint_t irq = get_intr_number(info);
184 guest_ctrl->EVENTINJ.vector = irq;
185 guest_ctrl->EVENTINJ.valid = 1;
186 guest_ctrl->EVENTINJ.type = SVM_INJECTION_EXTERNAL_INTR;
188 injecting_intr(info, irq, EXTERNAL_IRQ);
193 guest_ctrl->EVENTINJ.type = SVM_INJECTION_NMI;
197 uint_t excp = get_intr_number(info);
199 guest_ctrl->EVENTINJ.type = SVM_INJECTION_EXCEPTION;
201 if (info->intr_state.excp_error_code) {
202 guest_ctrl->EVENTINJ.error_code = info->intr_state.excp_error_code;
203 guest_ctrl->EVENTINJ.ev = 1;
206 guest_ctrl->EVENTINJ.vector = excp;
208 injecting_intr(info, excp, EXCEPTION);
212 guest_ctrl->EVENTINJ.type = SVM_INJECTION_SOFT_INTR;
215 guest_ctrl->EVENTINJ.type = SVM_INJECTION_VIRTUAL_INTR;
220 PrintDebug("Attempted to issue an invalid interrupt\n");
224 PrintDebug("Injecting Interrupt %d (EIP=%x)\n", guest_ctrl->EVENTINJ.vector, info->rip);
228 guest_state->cr0 = info->ctrl_regs.cr0;
229 guest_state->cr2 = info->ctrl_regs.cr2;
230 guest_state->cr3 = info->ctrl_regs.cr3;
231 guest_state->cr4 = info->ctrl_regs.cr4;
232 guest_ctrl->guest_ctrl.V_TPR = info->ctrl_regs.cr8 & 0xff;
233 guest_state->rflags = info->ctrl_regs.rflags;
236 guest_state->cpl = info->cpl;
238 guest_state->rax = info->vm_regs.rax;
239 guest_state->rip = info->rip;
240 guest_state->rsp = info->vm_regs.rsp;
243 set_vmcb_segments((vmcb_t*)(info->vmm_data), &(info->segments));
245 if (exit_code == VMEXIT_INTR) {
246 PrintDebug("INTR ret IP = %x\n", guest_state->rip);