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head/sys/amd64/include/vmm.h

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* consumers of instruction decoding. The only reason why their contents * consumers of instruction decoding. The only reason why their contents
* need to be exposed is because they are part of the 'vm_exit' structure. * need to be exposed is because they are part of the 'vm_exit' structure.
*/ */
struct vie_op { struct vie_op {
uint8_t op_byte; /* actual opcode byte */ uint8_t op_byte; /* actual opcode byte */
uint8_t op_type; /* type of operation (e.g. MOV) */ uint8_t op_type; /* type of operation (e.g. MOV) */
uint16_t op_flags; uint16_t op_flags;
}; };
_Static_assert(sizeof(struct vie_op) == 4, "ABI");
_Static_assert(_Alignof(struct vie_op) == 2, "ABI");
#define VIE_INST_SIZE 15 #define VIE_INST_SIZE 15
struct vie { struct vie {
uint8_t inst[VIE_INST_SIZE]; /* instruction bytes */ uint8_t inst[VIE_INST_SIZE]; /* instruction bytes */
uint8_t num_valid; /* size of the instruction */ uint8_t num_valid; /* size of the instruction */
uint8_t num_processed; uint8_t num_processed;
uint8_t addrsize:4, opsize:4; /* address and operand sizes */ uint8_t addrsize:4, opsize:4; /* address and operand sizes */
uint8_t rex_w:1, /* REX prefix */ uint8_t rex_w:1, /* REX prefix */
rex_r:1, rex_r:1,
rex_x:1, rex_x:1,
rex_b:1, rex_b:1,
rex_present:1, rex_present:1,
repz_present:1, /* REP/REPE/REPZ prefix */ repz_present:1, /* REP/REPE/REPZ prefix */
repnz_present:1, /* REPNE/REPNZ prefix */ repnz_present:1, /* REPNE/REPNZ prefix */
opsize_override:1, /* Operand size override */ opsize_override:1, /* Operand size override */
addrsize_override:1, /* Address size override */ addrsize_override:1, /* Address size override */
segment_override:1; /* Segment override */ segment_override:1; /* Segment override */
uint8_t mod:2, /* ModRM byte */ uint8_t mod:2, /* ModRM byte */
reg:4, reg:4,
rm:4; rm:4;
uint8_t ss:2, /* SIB byte */ uint8_t ss:2, /* SIB byte */
index:4, _sparebits:2,
base:4; index:4, /* SIB byte */
base:4; /* SIB byte */
uint8_t disp_bytes; uint8_t disp_bytes;
uint8_t imm_bytes; uint8_t imm_bytes;
uint8_t scale; uint8_t scale;
uint8_t _sparebytes[3];
int base_register; /* VM_REG_GUEST_xyz */ int base_register; /* VM_REG_GUEST_xyz */
int index_register; /* VM_REG_GUEST_xyz */ int index_register; /* VM_REG_GUEST_xyz */
int segment_register; /* VM_REG_GUEST_xyz */ int segment_register; /* VM_REG_GUEST_xyz */
int64_t displacement; /* optional addr displacement */ int64_t displacement; /* optional addr displacement */
int64_t immediate; /* optional immediate operand */ int64_t immediate; /* optional immediate operand */
uint8_t decoded; /* set to 1 if successfully decoded */ uint8_t decoded; /* set to 1 if successfully decoded */
uint8_t _sparebyte;
struct vie_op op; /* opcode description */ struct vie_op op; /* opcode description */
}; };
_Static_assert(sizeof(struct vie) == 64, "ABI");
_Static_assert(__offsetof(struct vie, disp_bytes) == 22, "ABI");
_Static_assert(__offsetof(struct vie, scale) == 24, "ABI");
_Static_assert(__offsetof(struct vie, base_register) == 28, "ABI");
enum vm_exitcode { enum vm_exitcode {
VM_EXITCODE_INOUT, VM_EXITCODE_INOUT,
VM_EXITCODE_VMX, VM_EXITCODE_VMX,
VM_EXITCODE_BOGUS, VM_EXITCODE_BOGUS,
VM_EXITCODE_RDMSR, VM_EXITCODE_RDMSR,
VM_EXITCODE_WRMSR, VM_EXITCODE_WRMSR,
VM_EXITCODE_HLT, VM_EXITCODE_HLT,
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