X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=blobdiff_plain;f=palacios%2Fsrc%2Fpalacios%2Fsvm_handler.c;h=96ab5fb055eed0c5883e920a0db90dd07985f79f;hb=bf0d677f3d92f5949c3a73dad30aaf330201da44;hp=a2e7e14e5443dcea85820d8db74eb11bf1705c6f;hpb=ace8f0532fa5650c6642a3a7174f3aa19b09095a;p=palacios.git diff --git a/palacios/src/palacios/svm_handler.c b/palacios/src/palacios/svm_handler.c index a2e7e14..96ab5fb 100644 --- a/palacios/src/palacios/svm_handler.c +++ b/palacios/src/palacios/svm_handler.c @@ -1,13 +1,13 @@ #include #include #include -#include -#include +#include +#include #include +#include +#include #include - -extern struct vmm_os_hooks * os_hooks; - +#include int handle_svm_exit(struct guest_info * info) { vmcb_ctrl_t * guest_ctrl = 0; @@ -22,11 +22,62 @@ int handle_svm_exit(struct guest_info * info) { info->rip = guest_state->rip; info->vm_regs.rsp = guest_state->rsp; info->vm_regs.rax = guest_state->rax; - info->vm_regs.rsp = guest_state->rsp; + + info->cpl = guest_state->cpl; + + + info->ctrl_regs.cr0 = guest_state->cr0; + info->ctrl_regs.cr2 = guest_state->cr2; + info->ctrl_regs.cr3 = guest_state->cr3; + info->ctrl_regs.cr4 = guest_state->cr4; + info->ctrl_regs.cr8 = guest_ctrl->guest_ctrl.V_TPR; + info->ctrl_regs.rflags = guest_state->rflags; + info->ctrl_regs.efer = guest_state->efer; + + get_vmcb_segments((vmcb_t*)(info->vmm_data), &(info->segments)); + info->cpu_mode = get_cpu_mode(info); + info->mem_mode = get_mem_mode(info); exit_code = guest_ctrl->exit_code; + + // Disable printing io exits due to bochs debug messages + //if (!((exit_code == VMEXIT_IOIO) && ((ushort_t)(guest_ctrl->exit_info1 >> 16) == 0x402))) { + + + // PrintDebug("SVM Returned: Exit Code: 0x%x \t\t(tsc=%ul)\n",exit_code, (uint_t)info->time_state.guest_tsc); + + if ((0) && (exit_code < 0x4f)) { + char instr[32]; + int ret; + // Dump out the instr stream + + //PrintDebug("RIP: %x\n", guest_state->rip); + PrintDebug("RIP Linear: %x\n", get_addr_linear(info, info->rip, &(info->segments.cs))); + + // OK, now we will read the instruction + // The only difference between PROTECTED and PROTECTED_PG is whether we read + // from guest_pa or guest_va + if (info->mem_mode == PHYSICAL_MEM) { + // The real rip address is actually a combination of the rip + CS base + ret = read_guest_pa_memory(info, get_addr_linear(info, info->rip, &(info->segments.cs)), 32, instr); + } else { + ret = read_guest_va_memory(info, get_addr_linear(info, info->rip, &(info->segments.cs)), 32, instr); + } + + if (ret != 32) { + // I think we should inject a GPF into the guest + PrintDebug("Could not read instruction (ret=%d)\n", ret); + } else { + + PrintDebug("Instr Stream:\n"); + PrintTraceMemDump(instr, 32); + } + } + + + // } // PrintDebugVMCB((vmcb_t*)(info->vmm_data)); @@ -61,147 +112,254 @@ int handle_svm_exit(struct guest_info * info) { } } } else if (exit_code == VMEXIT_CR0_WRITE) { +#ifdef DEBUG_CTRL_REGS PrintDebug("CR0 Write\n"); - +#endif if (handle_cr0_write(info) == -1) { return -1; } + } else if (exit_code == VMEXIT_CR0_READ) { +#ifdef DEBUG_CTRL_REGS + PrintDebug("CR0 Read\n"); +#endif + if (handle_cr0_read(info) == -1) { + return -1; + } + } else if (exit_code == VMEXIT_CR3_WRITE) { +#ifdef DEBUG_CTRL_REGS + PrintDebug("CR3 Write\n"); +#endif + if (handle_cr3_write(info) == -1) { + return -1; + } + } else if (exit_code == VMEXIT_CR3_READ) { +#ifdef DEBUG_CTRL_REGS + PrintDebug("CR3 Read\n"); +#endif + if (handle_cr3_read(info) == -1) { + return -1; + } + + } else if (exit_code == VMEXIT_EXCP14) { + addr_t fault_addr = guest_ctrl->exit_info2; + pf_error_t * error_code = (pf_error_t *)&(guest_ctrl->exit_info1); +#ifdef DEBUG_SHADOW_PAGING + PrintDebug("PageFault at %x (error=%d)\n", fault_addr, *error_code); +#endif + if (info->shdw_pg_mode == SHADOW_PAGING) { + if (handle_shadow_pagefault(info, fault_addr, *error_code) == -1) { + return -1; + } + } else { + + PrintError("Page fault in un implemented paging mode\n"); + + return -1; + } + } else if (exit_code == VMEXIT_NPF) { + PrintError("Currently unhandled Nested Page Fault\n"); + return -1; + + } else if (exit_code == VMEXIT_INVLPG) { + if (info->shdw_pg_mode == SHADOW_PAGING) { +#ifdef DEBUG_SHADOW_PAGING + PrintDebug("Invlpg\n"); +#endif + if (handle_shadow_invlpg(info) == -1) { + return -1; + } + } + /* - } else if (( (exit_code == VMEXIT_CR3_READ) || - (exit_code == VMEXIT_CR3_WRITE) || - (exit_code == VMEXIT_INVLPG) || - (exit_code == VMEXIT_INVLPGA) || - (exit_code == VMEXIT_EXCP14)) && - (info->page_mode == SHADOW_PAGING)) { - handle_shadow_paging(info); + (exit_code == VMEXIT_INVLPGA) || */ - + } else if (exit_code == VMEXIT_INTR) { // handle_svm_intr(info); + + } else if (exit_code == VMEXIT_SMI) { + + // handle_svm_smi(info); // ignored for now + + } else if (exit_code == VMEXIT_HLT) { + PrintDebug("Guest halted\n"); + if (handle_svm_halt(info) == -1) { + return -1; + } + } else if (exit_code == VMEXIT_PAUSE) { + PrintDebug("Guest paused\n"); + if (handle_svm_pause(info) == -1) { + return -1; + } + } else if (exit_code == VMEXIT_VMMCALL) { + PrintDebug("VMMCALL\n"); + if (info->run_state == VM_EMULATING) { + if (v3_emulation_exit_handler(info) == -1) { + return -1; + } + } else { + PrintError("VMMCALL with not emulator...\n"); + return -1; + } + } else { - addr_t rip_addr = get_addr_linear(info, guest_state->rip, guest_state->cs.selector); + addr_t rip_addr; char buf[15]; addr_t host_addr; - PrintDebug("SVM Returned:(VMCB=%x)\n", info->vmm_data); - PrintDebug("RIP: %x\n", guest_state->rip); - PrintDebug("RIP Linear: %x\n", rip_addr); + rip_addr = get_addr_linear(info, guest_state->rip, &(info->segments.cs)); + + + + PrintError("SVM Returned:(VMCB=%x)\n", info->vmm_data); + PrintError("RIP: %x\n", guest_state->rip); + PrintError("RIP Linear: %x\n", rip_addr); - PrintDebug("SVM Returned: Exit Code: %x\n",exit_code); + PrintError("SVM Returned: Exit Code: %x\n",exit_code); - PrintDebug("io_info1 low = 0x%.8x\n", *(uint_t*)&(guest_ctrl->exit_info1)); - PrintDebug("io_info1 high = 0x%.8x\n", *(uint_t *)(((uchar_t *)&(guest_ctrl->exit_info1)) + 4)); + PrintError("io_info1 low = 0x%.8x\n", *(uint_t*)&(guest_ctrl->exit_info1)); + PrintError("io_info1 high = 0x%.8x\n", *(uint_t *)(((uchar_t *)&(guest_ctrl->exit_info1)) + 4)); - PrintDebug("io_info2 low = 0x%.8x\n", *(uint_t*)&(guest_ctrl->exit_info2)); - PrintDebug("io_info2 high = 0x%.8x\n", *(uint_t *)(((uchar_t *)&(guest_ctrl->exit_info2)) + 4)); + PrintError("io_info2 low = 0x%.8x\n", *(uint_t*)&(guest_ctrl->exit_info2)); + PrintError("io_info2 high = 0x%.8x\n", *(uint_t *)(((uchar_t *)&(guest_ctrl->exit_info2)) + 4)); - if (guest_pa_to_host_pa(info, guest_state->rip, &host_addr) == -1) { - PrintDebug("Could not translate guest_state->rip to host address\n"); + if (info->mem_mode == PHYSICAL_MEM) { + if (guest_pa_to_host_pa(info, guest_state->rip, &host_addr) == -1) { + PrintError("Could not translate guest_state->rip to host address\n"); + return -1; + } + } else if (info->mem_mode == VIRTUAL_MEM) { + if (guest_va_to_host_pa(info, guest_state->rip, &host_addr) == -1) { + PrintError("Could not translate guest_state->rip to host address\n"); + return -1; + } + } else { + PrintError("Invalid memory mode\n"); return -1; } - PrintDebug("Host Address of rip = 0x%x\n", host_addr); + PrintError("Host Address of rip = 0x%x\n", host_addr); - memset(buf, 0, 15); + memset(buf, 0, 32); - PrintDebug("Reading from 0x%x in guest\n", rip_addr); + PrintError("Reading instruction stream in guest\n", rip_addr); - read_guest_pa_memory(info, rip_addr, 15, buf); + if (info->mem_mode == PHYSICAL_MEM) { + read_guest_pa_memory(info, rip_addr-16, 32, buf); + } else { + read_guest_va_memory(info, rip_addr-16, 32, buf); + } - PrintTraceMemDump(buf, 15); + PrintDebug("16 bytes before Rip\n"); + PrintTraceMemDump(buf, 16); + PrintDebug("Rip onward\n"); + PrintTraceMemDump(buf+16, 16); - while(1); + + + return -1; } // Update the low level state - if (intr_pending(&(info->intr_state))) { - guest_ctrl->EVENTINJ.vector = get_intr_number(&(info->intr_state)); - guest_ctrl->EVENTINJ.valid = 1; - - switch (get_intr_type(&(info->intr_state))) { - case EXTERNAL_IRQ: - guest_ctrl->EVENTINJ.type = SVM_INJECTION_EXTERNAL_INTR; - break; + if (intr_pending(info)) { + + switch (get_intr_type(info)) { + case EXTERNAL_IRQ: + { + uint_t irq = get_intr_number(info); + + // check to see if ==-1 (non exists) + + /* + guest_ctrl->EVENTINJ.vector = irq; + guest_ctrl->EVENTINJ.valid = 1; + guest_ctrl->EVENTINJ.type = SVM_INJECTION_EXTERNAL_INTR; + */ + + guest_ctrl->guest_ctrl.V_IRQ = 1; + guest_ctrl->guest_ctrl.V_INTR_VECTOR = irq; + guest_ctrl->guest_ctrl.V_IGN_TPR = 1; + guest_ctrl->guest_ctrl.V_INTR_PRIO = 0xf; +#ifdef DEBUG_INTERRUPTS + PrintDebug("Injecting Interrupt %d (EIP=%x)\n", guest_ctrl->guest_ctrl.V_INTR_VECTOR, info->rip); +#endif + injecting_intr(info, irq, EXTERNAL_IRQ); + + break; + } case NMI: guest_ctrl->EVENTINJ.type = SVM_INJECTION_NMI; break; case EXCEPTION: - guest_ctrl->EVENTINJ.type = SVM_INJECTION_EXCEPTION; - guest_ctrl->EVENTINJ.error_code = info->intr_state.excp_error_code; - break; - case SOFTWARE: + { + uint_t excp = get_intr_number(info); + + guest_ctrl->EVENTINJ.type = SVM_INJECTION_EXCEPTION; + + if (info->intr_state.excp_error_code_valid) { //PAD + guest_ctrl->EVENTINJ.error_code = info->intr_state.excp_error_code; + guest_ctrl->EVENTINJ.ev = 1; +#ifdef DEBUG_INTERRUPTS + PrintDebug("Injecting error code %x\n", guest_ctrl->EVENTINJ.error_code); +#endif + } + + guest_ctrl->EVENTINJ.vector = excp; + + guest_ctrl->EVENTINJ.valid = 1; +#ifdef DEBUG_INTERRUPTS + PrintDebug("Injecting Interrupt %d (EIP=%x)\n", guest_ctrl->EVENTINJ.vector, info->rip); +#endif + injecting_intr(info, excp, EXCEPTION); + break; + } + case SOFTWARE_INTR: guest_ctrl->EVENTINJ.type = SVM_INJECTION_SOFT_INTR; break; - case VIRTUAL: + case VIRTUAL_INTR: guest_ctrl->EVENTINJ.type = SVM_INJECTION_VIRTUAL_INTR; break; case INVALID_INTR: default: - PrintDebug("Attempted to issue an invalid interrupt\n"); + PrintError("Attempted to issue an invalid interrupt\n"); return -1; } - // IMPORTANT TODO - // We need to figure out stack parameters.... + } else { +#ifdef DEBUG_INTERRUPTS + PrintDebug("No interrupts/exceptions pending\n"); +#endif + } - //EVENTINJ.error_code + guest_state->cr0 = info->ctrl_regs.cr0; + guest_state->cr2 = info->ctrl_regs.cr2; + guest_state->cr3 = info->ctrl_regs.cr3; + guest_state->cr4 = info->ctrl_regs.cr4; + guest_ctrl->guest_ctrl.V_TPR = info->ctrl_regs.cr8 & 0xff; + guest_state->rflags = info->ctrl_regs.rflags; + guest_state->efer = info->ctrl_regs.efer; - } + guest_state->cpl = info->cpl; guest_state->rax = info->vm_regs.rax; guest_state->rip = info->rip; guest_state->rsp = info->vm_regs.rsp; - return 0; -} - + set_vmcb_segments((vmcb_t*)(info->vmm_data), &(info->segments)); - -int handle_shadow_paging(struct guest_info * info) { - vmcb_ctrl_t * guest_ctrl = GET_VMCB_CTRL_AREA((vmcb_t*)(info->vmm_data)); - // vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA((vmcb_t*)(info->vmm_data)); - - if (guest_ctrl->exit_code == VMEXIT_CR3_READ) { - + if (exit_code == VMEXIT_INTR) { + //PrintDebug("INTR ret IP = %x\n", guest_state->rip); } return 0; } - - -int handle_svm_intr(struct guest_info * info) { - vmcb_ctrl_t * guest_ctrl = GET_VMCB_CTRL_AREA((vmcb_t*)(info->vmm_data)); - // vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA((vmcb_t*)(info->vmm_data)); - - //struct Interrupt_Info * int_info = &(guest_ctrl->exit_int_info); - - //struct vmm_irq_hook * get_irq_hook(&(info->irq_map), int_info->vector); - - PrintDebug("SVM Returned: Exit Code: %x\n",guest_ctrl->exit_code); - PrintDebug("V_INTR_VECTOR: 0x%x\n", guest_ctrl->guest_ctrl.V_INTR_VECTOR); - - - - - while(1); - - - - - - - - - - return 0; -}