#include <palacios/vmx_io.h>
#include <palacios/vmm_io.h>
-#include <palacios/vmcs.h>
-#include <palacios/vmx_lowlevel.h>
#include <palacios/vmm.h>
#include <palacios/vmx_handler.h>
#include <palacios/vmm_ctrl_regs.h>
#include <palacios/vm_guest_mem.h>
#include <palacios/vmm_decoder.h>
-#ifndef CONFIG_DEBUG_IO
+#ifndef V3_CONFIG_DEBUG_IO
#undef PrintDebug
#define PrintDebug(fmt, args...)
#endif
/* Same as SVM */
-static int update_map(struct guest_info * info, uint16_t port, int hook_read, int hook_write) {
- uchar_t * bitmap = (uint8_t *)(info->io_map.arch_data);
+static int update_map(struct v3_vm_info * vm, uint16_t port, int hook_read, int hook_write) {
+ uchar_t * bitmap = (uint8_t *)(vm->io_map.arch_data);
int major = port / 8;
int minor = port % 8;
return 0;
}
-int v3_init_vmx_io_map(struct guest_info * info) {
- info->io_map.update_map = update_map;
+int v3_init_vmx_io_map(struct v3_vm_info * vm) {
+ vm->io_map.update_map = update_map;
- info->io_map.arch_data = V3_VAddr(V3_AllocPages(2));
- memset(info->io_map.arch_data, 0, PAGE_SIZE_4KB * 2);
+ vm->io_map.arch_data = V3_VAddr(V3_AllocPages(2));
+ memset(vm->io_map.arch_data, 0xff, PAGE_SIZE_4KB * 2);
+
+ v3_refresh_io_map(vm);
return 0;
}
-int v3_handle_vmx_io_in(struct guest_info * info) {
- struct vmx_exit_io_qual io_qual;
+int v3_deinit_vmx_io_map(struct v3_vm_info * vm) {
+ V3_FreePages(V3_PAddr(vm->io_map.arch_data), 2);
+ return 0;
+}
+
+
+int v3_handle_vmx_io_in(struct guest_info * core, struct vmx_exit_info * exit_info) {
+ struct vmx_exit_io_qual io_qual = *(struct vmx_exit_io_qual *)&(exit_info->exit_qual);;
struct v3_io_hook * hook = NULL;
int read_size = 0;
- uint32_t instr_length = 0;
- io_qual.value = 0;
- vmcs_read(VMCS_EXIT_QUAL, &(io_qual.value));
- hook = v3_get_io_hook(info, io_qual.port);
-
- if (hook == NULL) {
- PrintError("Hook not present for IN on port %x\n", io_qual.port);
- return -1;
- }
+ hook = v3_get_io_hook(core->vm_info, io_qual.port);
read_size = io_qual.access_size + 1;
PrintDebug("IN of %d bytes on port %d (0x%x)\n", read_size, io_qual.port, io_qual.port);
- if (hook->read(io_qual.port, &(info->vm_regs.rax), read_size, hook->priv_data) != read_size) {
- PrintError("Read failure for IN on port %x\n", io_qual.port);
- return -1;
- }
+ if (hook == NULL) {
+ PrintDebug("IN operation on unhooked IO port 0x%x - returning zeros\n", io_qual.port);
+ core->vm_regs.rax >>= 8*read_size;
+ core->vm_regs.rax <<= 8*read_size;
- if (vmcs_read(VMCS_EXIT_INSTR_LEN, &instr_length) != VMX_SUCCESS) {
- PrintError("Could not read instruction length\n");
- return -1;
+ } else {
+ if (hook->read(core, io_qual.port, &(core->vm_regs.rax), read_size, hook->priv_data) != read_size) {
+ PrintError("Read failure for IN on port %x\n", io_qual.port);
+ return -1;
+ }
}
+
- info->rip += instr_length;
+ core->rip += exit_info->instr_len;
return 0;
}
-int v3_handle_vmx_io_ins(struct guest_info * info) {
- struct vmx_exit_io_qual io_qual;
+int v3_handle_vmx_io_ins(struct guest_info * core, struct vmx_exit_info * exit_info) {
+ struct vmx_exit_io_qual io_qual = *(struct vmx_exit_io_qual *)&(exit_info->exit_qual);;
struct v3_io_hook * hook = NULL;
int read_size = 0;
- addr_t guest_va = 0;
+ addr_t guest_va = exit_info->guest_linear_addr;
addr_t host_addr = 0;
int rdi_change = 0;
ulong_t rep_num = 1;
- struct rflags * flags = (struct rflags *)&(info->ctrl_regs.rflags);
- int instr_len = 0;
+ struct rflags * flags = (struct rflags *)&(core->ctrl_regs.rflags);
- io_qual.value = 0;
- vmcs_read(VMCS_EXIT_QUAL, &(io_qual.value));
- hook = v3_get_io_hook(info, io_qual.port);
+ hook = v3_get_io_hook(core->vm_info, io_qual.port);
- if (hook == NULL) {
- PrintError("Hook not present for INS on port 0x%x\n", io_qual.port);
- return -1;
- }
PrintDebug("INS on port 0x%x\n", io_qual.port);
read_size = io_qual.access_size + 1;
if (io_qual.rep) {
- struct vmx_exit_io_instr_info instr_info;
-
- instr_info.value = 0;
- vmcs_read(VMCS_EXIT_INSTR_INFO, &instr_info.value);
+ struct vmx_exit_io_instr_info instr_info = *(struct vmx_exit_io_instr_info *)&(exit_info->instr_info);
if (instr_info.addr_size == 0) {
- rep_num = info->vm_regs.rcx & 0xffff;
+ rep_num = core->vm_regs.rcx & 0xffff;
} else if(instr_info.addr_size == 1) {
- rep_num = info->vm_regs.rcx & 0xffffffff;
+ rep_num = core->vm_regs.rcx & 0xffffffff;
} else if(instr_info.addr_size == 2) {
- rep_num = info->vm_regs.rcx & 0xffffffffffffffffLL;
+ rep_num = core->vm_regs.rcx & 0xffffffffffffffffLL;
} else {
PrintDebug("Unknown INS address size!\n");
return -1;
PrintDebug("INS size=%d for %ld steps\n", read_size, rep_num);
- vmcs_read(VMCS_GUEST_LINEAR_ADDR, &guest_va);
- if (guest_va_to_host_va(info, guest_va, &host_addr) == -1) {
+
+ if (v3_gva_to_hva(core, guest_va, &host_addr) == -1) {
PrintError("Could not convert Guest VA to host VA\n");
return -1;
}
do {
- if (hook->read(io_qual.port, (char *)host_addr, read_size, hook->priv_data) != read_size) {
- PrintError("Read Failure for INS on port 0x%x\n", io_qual.port);
- return -1;
- }
+
+ if (hook == NULL) {
+ PrintDebug("INS operation on unhooked IO port 0x%x - returning zeros\n", io_qual.port);
+
+ memset((char*)host_addr,0,read_size);
+
+ } else {
+ if (hook->read(core, io_qual.port, (char *)host_addr, read_size, hook->priv_data) != read_size) {
+ PrintError("Read Failure for INS on port 0x%x\n", io_qual.port);
+ return -1;
+ }
+ }
+
host_addr += rdi_change;
- info->vm_regs.rdi += rdi_change;
+ core->vm_regs.rdi += rdi_change;
if (io_qual.rep) {
- info->vm_regs.rcx--;
+ core->vm_regs.rcx--;
}
} while (--rep_num > 0);
- vmcs_read(VMCS_EXIT_INSTR_LEN, &instr_len);
- info->rip += instr_len;
+ core->rip += exit_info->instr_len;
return 0;
}
-int v3_handle_vmx_io_out(struct guest_info * info) {
- struct vmx_exit_io_qual io_qual;
+int v3_handle_vmx_io_out(struct guest_info * core, struct vmx_exit_info * exit_info) {
+ struct vmx_exit_io_qual io_qual = *(struct vmx_exit_io_qual *)&(exit_info->exit_qual);
struct v3_io_hook * hook = NULL;
int write_size = 0;
- uint32_t instr_length = 0;
- vmcs_read(VMCS_EXIT_QUAL, &(io_qual.value));
- hook = v3_get_io_hook(info, io_qual.port);
+ hook = v3_get_io_hook(core->vm_info, io_qual.port);
- if (hook == NULL) {
- PrintError("Hook not present for out on port %x\n", io_qual.port);
- return -1;
- }
write_size = io_qual.access_size + 1;
PrintDebug("OUT of %d bytes on port %d (0x%x)\n", write_size, io_qual.port, io_qual.port);
- if (hook->write(io_qual.port, &(info->vm_regs.rax), write_size, hook->priv_data) != write_size) {
- PrintError("Write failure for out on port %x\n",io_qual.port);
- return -1;
+ if (hook == NULL) {
+ PrintDebug("OUT operation on unhooked IO port 0x%x - ignored\n", io_qual.port);
+ } else {
+ if (hook->write(core, io_qual.port, &(core->vm_regs.rax), write_size, hook->priv_data) != write_size) {
+ PrintError("Write failure for out on port %x\n",io_qual.port);
+ return -1;
+ }
}
-
- if (vmcs_read(VMCS_EXIT_INSTR_LEN, &instr_length) != VMX_SUCCESS) {
- PrintError("Could not read instruction length\n");
- return -1;
- }
-
- info->rip += instr_length;
+ core->rip += exit_info->instr_len;
return 0;
}
-int v3_handle_vmx_io_outs(struct guest_info * info) {
- struct vmx_exit_io_qual io_qual;
+int v3_handle_vmx_io_outs(struct guest_info * core, struct vmx_exit_info * exit_info) {
+ struct vmx_exit_io_qual io_qual = *(struct vmx_exit_io_qual *)&(exit_info->exit_qual);
struct v3_io_hook * hook = NULL;
int write_size;
- addr_t guest_va;
+ addr_t guest_va = exit_info->guest_linear_addr;
addr_t host_addr;
int rsi_change;
ulong_t rep_num = 1;
- struct rflags * flags = (struct rflags *)&(info->ctrl_regs.rflags);
- int instr_len = 0;
-
- vmcs_read(VMCS_EXIT_QUAL, &(io_qual.value));
- hook = v3_get_io_hook(info, io_qual.port);
+ struct rflags * flags = (struct rflags *)&(core->ctrl_regs.rflags);
- if (hook == NULL) {
- PrintError("Hook not present for OUTS on port 0x%x\n", io_qual.port);
- return -1;
- }
+ hook = v3_get_io_hook(core->vm_info, io_qual.port);
PrintDebug("OUTS on port 0x%x\n", io_qual.port);
if (io_qual.rep) {
// Grab the address sized bits of rcx
- struct vmx_exit_io_instr_info instr_info;
-
- instr_info.value = 0;
- vmcs_read(VMCS_EXIT_INSTR_INFO, &instr_info.value);
+ struct vmx_exit_io_instr_info instr_info = *(struct vmx_exit_io_instr_info *)&(exit_info->instr_info);
if (instr_info.addr_size == 0) {
- rep_num = info->vm_regs.rcx & 0xffff;
+ rep_num = core->vm_regs.rcx & 0xffff;
} else if(instr_info.addr_size == 1) {
- rep_num = info->vm_regs.rcx & 0xffffffff;
+ rep_num = core->vm_regs.rcx & 0xffffffff;
} else if(instr_info.addr_size == 2) {
- rep_num = info->vm_regs.rcx & 0xffffffffffffffffLL;
+ rep_num = core->vm_regs.rcx & 0xffffffffffffffffLL;
} else {
PrintDebug("Unknown INS address size!\n");
return -1;
rsi_change = write_size;
}
- vmcs_read(VMCS_GUEST_LINEAR_ADDR, &guest_va);
+
PrintDebug("OUTS size=%d for %ld steps\n", write_size, rep_num);
- if (guest_va_to_host_va(info, guest_va, &host_addr) == -1) {
+ if (v3_gva_to_hva(core, guest_va, &host_addr) == -1) {
PrintError("Could not convert guest VA to host VA\n");
return -1;
}
do {
- if (hook->write(io_qual.port, (char *)host_addr, write_size, hook->priv_data) != write_size) {
- PrintError("Read failure for INS on port 0x%x\n", io_qual.port);
- return -1;
- }
+
+ if (hook == NULL) {
+ PrintDebug("OUTS operation on unhooked IO port 0x%x - ignored\n", io_qual.port);
+ } else {
+ if (hook->write(core, io_qual.port, (char *)host_addr, write_size, hook->priv_data) != write_size) {
+ PrintError("Read failure for INS on port 0x%x\n", io_qual.port);
+ return -1;
+ }
+ }
+
host_addr += rsi_change;
- info->vm_regs.rsi += rsi_change;
+ core->vm_regs.rsi += rsi_change;
if (io_qual.rep) {
- --info->vm_regs.rcx;
+ --core->vm_regs.rcx;
}
} while (--rep_num > 0);
- vmcs_read(VMCS_EXIT_INSTR_LEN, &instr_len);
- info->rip += instr_len;
+ core->rip += exit_info->instr_len;
return 0;
}
