* redistribute, and modify it as specified in the file "V3VEE_LICENSE".
*/
+
#include <palacios/svm_io.h>
#include <palacios/vmm_io.h>
#include <palacios/vmm_ctrl_regs.h>
#include <palacios/vmm_decoder.h>
#include <palacios/vm_guest_mem.h>
-#ifndef CONFIG_DEBUG_IO
+#ifndef V3_CONFIG_DEBUG_IO
#undef PrintDebug
#define PrintDebug(fmt, args...)
#endif
-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;
}
-int v3_init_svm_io_map(struct guest_info * info) {
- info->io_map.update_map = update_map;
+int v3_init_svm_io_map(struct v3_vm_info * vm) {
+ vm->io_map.update_map = update_map;
+
+ vm->io_map.arch_data = V3_VAddr(V3_AllocPages(3));
+ memset(vm->io_map.arch_data, 0xff, PAGE_SIZE_4KB * 3);
+
- info->io_map.arch_data = V3_VAddr(V3_AllocPages(3));
- memset(info->io_map.arch_data, 0, PAGE_SIZE_4KB * 3);
+ v3_refresh_io_map(vm);
return 0;
}
+int v3_deinit_svm_io_map(struct v3_vm_info * vm) {
+ V3_FreePages(V3_PAddr(vm->io_map.arch_data), 3);
+ return 0;
+}
-// This should package up an IO request and call vmm_handle_io
-int v3_handle_svm_io_in(struct guest_info * info) {
- vmcb_ctrl_t * ctrl_area = 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 svm_io_info * io_info = (struct svm_io_info *)&(ctrl_area->exit_info1);
- struct v3_io_hook * hook = v3_get_io_hook(info, io_info->port);
+// This should package up an IO request and call vmm_handle_io
+int v3_handle_svm_io_in(struct guest_info * core, struct svm_io_info * io_info) {
+ struct v3_io_hook * hook = v3_get_io_hook(core->vm_info, io_info->port);
int read_size = 0;
- if (hook == NULL) {
- PrintError("Hook Not present for in on port 0x%x\n", io_info->port);
- // error, we should not have exited on this port
- return -1;
- }
-
-
if (io_info->sz8) {
read_size = 1;
} else if (io_info->sz16) {
PrintDebug("IN of %d bytes on port %d (0x%x)\n", read_size, io_info->port, io_info->port);
- if (hook->read(io_info->port, &(info->vm_regs.rax), read_size, hook->priv_data) != read_size) {
- // not sure how we handle errors.....
- PrintError("Read Failure for in on port 0x%x\n", io_info->port);
- return -1;
- }
+ if (hook == NULL) {
+ PrintDebug("IN operation on unhooked IO port 0x%x - returning zero\n", io_info->port);
+ core->vm_regs.rax >>= 8*read_size;
+ core->vm_regs.rax <<= 8*read_size;
- info->rip = ctrl_area->exit_info2;
+ } else {
+ if (hook->read(core, io_info->port, &(core->vm_regs.rax), read_size, hook->priv_data) != read_size) {
+ // not sure how we handle errors.....
+ PrintError("Read Failure for in on port 0x%x\n", io_info->port);
+ return -1;
+ }
+ }
+
return 0;
}
/* We might not handle wrap around of the RDI register correctly...
* In that if we do wrap around the effect will manifest in the higher bits of the register
*/
-int v3_handle_svm_io_ins(struct guest_info * info) {
- vmcb_ctrl_t * ctrl_area = 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 svm_io_info * io_info = (struct svm_io_info *)&(ctrl_area->exit_info1);
-
- struct v3_io_hook * hook = v3_get_io_hook(info, io_info->port);
+int v3_handle_svm_io_ins(struct guest_info * core, struct svm_io_info * io_info) {
+ struct v3_io_hook * hook = v3_get_io_hook(core->vm_info, io_info->port);
int read_size = 0;
addr_t dst_addr = 0;
uint_t rep_num = 1;
ullong_t mask = 0;
- struct v3_segment * theseg = &(info->segments.es); // default is ES
+ struct v3_segment * theseg = &(core->segments.es); // default is ES
addr_t inst_ptr;
// direction can equal either 1 or -1
// We will multiply the final added offset by this value to go the correct direction
int direction = 1;
- struct rflags * flags = (struct rflags *)&(guest_state->rflags);
+ struct rflags * flags = (struct rflags *)&(core->ctrl_regs.rflags);
if (flags->df) {
direction = -1;
}
+
-
- if (hook == NULL) {
- PrintError("Hook Not present for ins on port 0x%x\n", io_info->port);
- // error, we should not have exited on this port
- return -1;
- }
-
-
-
- if (guest_va_to_host_va(info, get_addr_linear(info, info->rip, &(info->segments.cs)), &inst_ptr) == -1) {
+ if (v3_gva_to_hva(core, get_addr_linear(core, core->rip, &(core->segments.cs)), &inst_ptr) == -1) {
PrintError("Can't access instruction\n");
return -1;
}
while (is_prefix_byte(*((char *)inst_ptr))) {
switch (*((char *)inst_ptr)) {
case PREFIX_CS_OVERRIDE:
- theseg = &(info->segments.cs);
+ theseg = &(core->segments.cs);
break;
case PREFIX_SS_OVERRIDE:
- theseg = &(info->segments.ss);
+ theseg = &(core->segments.ss);
break;
case PREFIX_DS_OVERRIDE:
- theseg = &(info->segments.ds);
+ theseg = &(core->segments.ds);
break;
case PREFIX_ES_OVERRIDE:
- theseg = &(info->segments.es);
+ theseg = &(core->segments.es);
break;
case PREFIX_FS_OVERRIDE:
- theseg = &(info->segments.fs);
+ theseg = &(core->segments.fs);
break;
case PREFIX_GS_OVERRIDE:
- theseg = &(info->segments.gs);
+ theseg = &(core->segments.gs);
break;
default:
break;
mask = 0xffffffffffffffffLL;
} else {
// This value should be set depending on the host register size...
- mask = get_gpr_mask(info);
+ mask = get_gpr_mask(core);
PrintDebug("INS io_info invalid address size, mask=0x%p, io_info=0x%p\n",
(void *)(addr_t)mask, (void *)(addr_t)(io_info));
}
if (io_info->rep) {
- rep_num = info->vm_regs.rcx & mask;
+ rep_num = core->vm_regs.rcx & mask;
//rep_num = info->vm_regs.rcx;
}
-
PrintDebug("INS size=%d for %d steps\n", read_size, rep_num);
while (rep_num > 0) {
addr_t host_addr;
- dst_addr = get_addr_linear(info, (info->vm_regs.rdi & mask), theseg);
+ dst_addr = get_addr_linear(core, (core->vm_regs.rdi & mask), theseg);
// PrintDebug("Writing 0x%p\n", (void *)dst_addr);
- if (guest_va_to_host_va(info, dst_addr, &host_addr) == -1) {
+ if (v3_gva_to_hva(core, dst_addr, &host_addr) == -1) {
// either page fault or gpf...
PrintError("Could not convert Guest VA to host VA\n");
return -1;
}
- if (hook->read(io_info->port, (char *)host_addr, read_size, hook->priv_data) != read_size) {
- // not sure how we handle errors.....
- PrintError("Read Failure for ins on port 0x%x\n", io_info->port);
- return -1;
+ if (hook == NULL) {
+ PrintDebug("INS operation on unhooked IO port 0x%x - returning zeros\n", io_info->port);
+ memset((char*)host_addr,0,read_size);
+
+ } else {
+ if (hook->read(core, io_info->port, (char *)host_addr, read_size, hook->priv_data) != read_size) {
+ // not sure how we handle errors.....
+ PrintError("Read Failure for ins on port 0x%x\n", io_info->port);
+ return -1;
+ }
}
-
- info->vm_regs.rdi += (read_size * direction);
+
+ core->vm_regs.rdi += (read_size * direction);
if (io_info->rep) {
- info->vm_regs.rcx--;
+ core->vm_regs.rcx--;
}
rep_num--;
}
-
- info->rip = ctrl_area->exit_info2;
-
return 0;
}
-int v3_handle_svm_io_out(struct guest_info * info) {
- vmcb_ctrl_t * ctrl_area = 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 svm_io_info * io_info = (struct svm_io_info *)&(ctrl_area->exit_info1);
-
- struct v3_io_hook * hook = v3_get_io_hook(info, io_info->port);
+int v3_handle_svm_io_out(struct guest_info * core, struct svm_io_info * io_info) {
+ struct v3_io_hook * hook = v3_get_io_hook(core->vm_info, io_info->port);
int write_size = 0;
- if (hook == NULL) {
- PrintError("Hook Not present for out on port 0x%x\n", io_info->port);
- // error, we should not have exited on this port
- return -1;
- }
-
-
if (io_info->sz8) {
write_size = 1;
} else if (io_info->sz16) {
PrintDebug("OUT of %d bytes on port %d (0x%x)\n", write_size, io_info->port, io_info->port);
- if (hook->write(io_info->port, &(info->vm_regs.rax), write_size, hook->priv_data) != write_size) {
- // not sure how we handle errors.....
- PrintError("Write Failure for out on port 0x%x\n", io_info->port);
- return -1;
+ if (hook == NULL) {
+ PrintDebug("OUT operation on unhooked IO port 0x%x - ignored\n", io_info->port);
+ } else {
+ if (hook->write(core, io_info->port, &(core->vm_regs.rax), write_size, hook->priv_data) != write_size) {
+ // not sure how we handle errors.....
+ PrintError("Write Failure for out on port 0x%x\n", io_info->port);
+ return -1;
+ }
}
-
- info->rip = ctrl_area->exit_info2;
+
return 0;
}
* In that if we do wrap around the effect will manifest in the higher bits of the register
*/
-int v3_handle_svm_io_outs(struct guest_info * info) {
- vmcb_ctrl_t * ctrl_area = 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 svm_io_info * io_info = (struct svm_io_info *)&(ctrl_area->exit_info1);
-
- struct v3_io_hook * hook = v3_get_io_hook(info, io_info->port);
+int v3_handle_svm_io_outs(struct guest_info * core, struct svm_io_info * io_info) {
+
+ struct v3_io_hook * hook = v3_get_io_hook(core->vm_info, io_info->port);
int write_size = 0;
addr_t dst_addr = 0;
uint_t rep_num = 1;
ullong_t mask = 0;
addr_t inst_ptr;
- struct v3_segment * theseg = &(info->segments.es); // default is ES
+ struct v3_segment * theseg = &(core->segments.ds); // default is DS
// This is kind of hacky...
// direction can equal either 1 or -1
// We will multiply the final added offset by this value to go the correct direction
int direction = 1;
- struct rflags * flags = (struct rflags *)&(guest_state->rflags);
+ struct rflags * flags = (struct rflags *)&(core->ctrl_regs.rflags);
if (flags->df) {
direction = -1;
}
-
- if (hook == NULL) {
- PrintError("Hook Not present for outs on port 0x%x\n", io_info->port);
- // error, we should not have exited on this port
- return -1;
- }
-
PrintDebug("OUTS on port %d (0x%x)\n", io_info->port, io_info->port);
if (io_info->sz8) {
mask = 0xffffffffffffffffLL;
} else {
// This value should be set depending on the host register size...
- mask = get_gpr_mask(info);
+ mask = get_gpr_mask(core);
PrintDebug("OUTS io_info invalid address size, mask=0%p, io_info=0x%p\n",
(void *)(addr_t)mask, (void *)(addr_t)io_info);
}
if (io_info->rep) {
- rep_num = info->vm_regs.rcx & mask;
+ rep_num = core->vm_regs.rcx & mask;
}
- if (guest_va_to_host_va(info, get_addr_linear(info, info->rip, &(info->segments.cs)), &inst_ptr) == -1) {
+ if (v3_gva_to_hva(core, get_addr_linear(core, core->rip, &(core->segments.cs)), &inst_ptr) == -1) {
PrintError("Can't access instruction\n");
return -1;
}
while (is_prefix_byte(*((char *)inst_ptr))) {
switch (*((char *)inst_ptr)) {
case PREFIX_CS_OVERRIDE:
- theseg = &(info->segments.cs);
+ theseg = &(core->segments.cs);
break;
case PREFIX_SS_OVERRIDE:
- theseg = &(info->segments.ss);
+ theseg = &(core->segments.ss);
break;
case PREFIX_DS_OVERRIDE:
- theseg = &(info->segments.ds);
+ theseg = &(core->segments.ds);
break;
case PREFIX_ES_OVERRIDE:
- theseg = &(info->segments.es);
+ theseg = &(core->segments.es);
break;
case PREFIX_FS_OVERRIDE:
- theseg = &(info->segments.fs);
+ theseg = &(core->segments.fs);
break;
case PREFIX_GS_OVERRIDE:
- theseg = &(info->segments.gs);
+ theseg = &(core->segments.gs);
break;
default:
break;
PrintDebug("OUTS size=%d for %d steps\n", write_size, rep_num);
while (rep_num > 0) {
- addr_t host_addr;
+ addr_t host_addr = 0;
- dst_addr = get_addr_linear(info, (info->vm_regs.rsi & mask), theseg);
+ dst_addr = get_addr_linear(core, (core->vm_regs.rsi & mask), theseg);
- if (guest_va_to_host_va(info, dst_addr, &host_addr) == -1) {
- // either page fault or gpf...
+ if (v3_gva_to_hva(core, dst_addr, &host_addr) == -1) {
+ PrintError("Could not translate outs dest addr, either page fault or gpf...\n");
+ return -1;
}
- if (hook->write(io_info->port, (char*)host_addr, write_size, hook->priv_data) != write_size) {
- // not sure how we handle errors.....
- PrintError("Write Failure for outs on port 0x%x\n", io_info->port);
- return -1;
+ if (hook == NULL) {
+ PrintDebug("OUTS operation on unhooked IO port 0x%x - ignored\n", io_info->port);
+ } else {
+ if (hook->write(core, io_info->port, (char*)host_addr, write_size, hook->priv_data) != write_size) {
+ // not sure how we handle errors.....
+ PrintError("Write Failure for outs on port 0x%x\n", io_info->port);
+ return -1;
+ }
}
+
- info->vm_regs.rsi += write_size * direction;
+ core->vm_regs.rsi += write_size * direction;
if (io_info->rep) {
- info->vm_regs.rcx--;
+ core->vm_regs.rcx--;
}
rep_num--;
}
-
- info->rip = ctrl_area->exit_info2;
-
-
return 0;
}
