-#ifndef __VMM_EMULATE_H
-#define __VMM_EMULATE_H
-
-#ifdef __V3VEE__
-
-#include <palacios/vm_guest.h>
-#include <palacios/vmm.h>
/*
- * This is where we do the hideous X86 instruction parsing among other things
- * We can parse out the instruction prefixes, as well as decode the operands
+ * This file is part of the Palacios Virtual Machine Monitor developed
+ * by the V3VEE Project with funding from the United States National
+ * Science Foundation and the Department of Energy.
+ *
+ * The V3VEE Project is a joint project between Northwestern University
+ * and the University of New Mexico. You can find out more at
+ * http://www.v3vee.org
+ *
+ * Copyright (c) 2008, Jack Lange <jarusl@cs.northwestern.edu>
+ * Copyright (c) 2008, The V3VEE Project <http://www.v3vee.org>
+ * All rights reserved.
+ *
+ * Author: Jack Lange <jarusl@cs.northwestern.edu>
+ *
+ * This is free software. You are permitted to use,
+ * redistribute, and modify it as specified in the file "V3VEE_LICENSE".
*/
+#ifndef __VMM_DECODER_H
+#define __VMM_DECODER_H
+#ifdef __V3VEE__
+#include <palacios/vm_guest.h>
+#include <palacios/vmm.h>
-typedef enum {INVALID_OPERAND, REG_OPERAND, MEM_OPERAND} operand_type_t;
+typedef enum {INVALID_OPERAND, REG_OPERAND, MEM_OPERAND, IMM_OPERAND} v3_operand_type_t;
struct x86_operand {
addr_t operand;
uint_t size;
- operand_type_t type;
+ v3_operand_type_t type;
};
-struct x86_prefix_list {
+struct x86_prefixes {
uint_t lock : 1; // 0xF0
uint_t repne : 1; // 0xF2
uint_t repnz : 1; // 0xF2
struct x86_instr {
- uint_t instr_length; // output
- addr_t opcode; // output
- uint_t opcode_length; // output
- struct x86_prefix_list prefixes; // output
- struct x86_operand src_operand; // output
- struct x86_operand dst_operand; // output
- struct x86_operand extra_operand;
+ struct x86_prefixes prefixes;
+ uint_t instr_length;
+ addr_t opcode; // a pointer to the V3_OPCODE_[*] arrays defined below
+ uint_t num_operands;
+ struct x86_operand dst_operand;
+ struct x86_operand src_operand;
+ struct x86_operand third_operand;
+ void * decoder_data;
};
+struct basic_instr_info {
+ uint_t instr_length;
+ uint_t op_size;
+ uint_t str_op : 1;
+ uint_t has_rep : 1;
+};
+
+
+
/************************/
/* EXTERNAL DECODER API */
/************************/
/*
* Initializes a decoder
*/
-int init_decoder();
+int v3_init_decoder();
/*
* Decodes an instruction
int v3_encode(struct guest_info * info, struct x86_instr * instr, char * instr_buf);
+/*
+ * Gets the operand size for a memory operation
+ *
+ */
+int v3_basic_mem_decode(struct guest_info * info, addr_t instr_ptr, struct basic_instr_info * instr_info);
-
+/* Removes a rep prefix in place */
+void v3_strip_rep_prefix(uchar_t * instr, int length);
-#define MAKE_INSTR(nm, ...) static const uchar_t OPCODE_##nm[] = { __VA_ARGS__ }
+#define MAKE_INSTR(nm, ...) static const uchar_t V3_OPCODE_##nm[] = { __VA_ARGS__ }
/*
* Here's how it works:
#define PREFIX_OP_SIZE 0x66
#define PREFIX_ADDR_SIZE 0x67
-static inline int is_prefix_byte(char byte) {
+int v3_opcode_cmp(const uchar_t * op1, const uchar_t * op2);
+
+
+static inline int is_prefix_byte(uchar_t byte) {
switch (byte) {
case 0xF0: // lock
case 0xF2: // REPNE/REPNZ
-static inline operand_type_t decode_operands16(struct v3_gprs * gprs, // input/output
+static inline v3_operand_type_t decode_operands16(struct v3_gprs * gprs, // input/output
char * modrm_instr, // input
int * offset, // output
addr_t * first_operand, // output
struct modrm_byte * modrm = (struct modrm_byte *)modrm_instr;
addr_t base_addr = 0;
modrm_mode_t mod_mode = 0;
- operand_type_t addr_type = INVALID_OPERAND;
+ v3_operand_type_t addr_type = INVALID_OPERAND;
char * instr_cursor = modrm_instr;
// PrintDebug("ModRM mod=%d\n", modrm->mod);
-static inline operand_type_t decode_operands32(struct v3_gprs * gprs, // input/output
- char * modrm_instr, // input
+static inline v3_operand_type_t decode_operands32(struct v3_gprs * gprs, // input/output
+ uchar_t * modrm_instr, // input
int * offset, // output
addr_t * first_operand, // output
addr_t * second_operand, // output
reg_size_t reg_size) { // input
- char * instr_cursor = modrm_instr;
+ uchar_t * instr_cursor = modrm_instr;
struct modrm_byte * modrm = (struct modrm_byte *)modrm_instr;
addr_t base_addr = 0;
modrm_mode_t mod_mode = 0;
uint_t has_sib_byte = 0;
- operand_type_t addr_type = INVALID_OPERAND;
+ v3_operand_type_t addr_type = INVALID_OPERAND;