added MSR hook framework

[palacios.git] / palacios / include / palacios / vmm_decoder.h

diff --git a/palacios/include/palacios/vmm_decoder.h b/palacios/include/palacios/vmm_decoder.h
index 2617913..df10150 100644 (file)
--- a/palacios/include/palacios/vmm_decoder.h
+++ b/palacios/include/palacios/vmm_decoder.h
@@ -1,5 +1,25 @@
-#ifndef __VMM_EMULATE_H
-#define __VMM_EMULATE_H
+
+/*
+ * 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__
 
@@ -7,12 +27,12 @@
 #include <palacios/vmm.h>
 
 
-typedef enum {INVALID_OPERAND, REG_OPERAND, MEM_OPERAND, IMM_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_prefixes {
@@ -47,6 +67,15 @@ struct x86_instr {
 };
 
 
+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 */
 /************************/
@@ -58,7 +87,7 @@ struct x86_instr {
 /* 
  * Initializes a decoder
  */
-int init_decoder();
+int v3_init_decoder();
 
 /* 
  * Decodes an instruction 
@@ -84,11 +113,12 @@ int v3_encode(struct guest_info * info, struct x86_instr * instr, char * instr_b
  * Gets the operand size for a memory operation
  *
  */
-int v3_basic_mem_decode(struct guest_info * info, addr_t instr_ptr, uint_t * size, uint_t * instr_len);
-
+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);
 
 
 
@@ -178,10 +208,10 @@ MAKE_INSTR(SMSW,   3, 0x0f, 0x01, 0x00);
 #define PREFIX_OP_SIZE      0x66
 #define PREFIX_ADDR_SIZE    0x67
 
-int opcode_cmp(const uchar_t * op1, const uchar_t * op2);
+int v3_opcode_cmp(const uchar_t * op1, const uchar_t * op2);
 
 
-static inline int is_prefix_byte(char byte) {
+static inline int is_prefix_byte(uchar_t byte) {
   switch (byte) {
   case 0xF0:      // lock
   case 0xF2:      // REPNE/REPNZ
@@ -211,10 +241,14 @@ static inline v3_reg_t get_gpr_mask(struct guest_info * info) {
     return 0xffff;
     break;
   case PROTECTED:
+  case PROTECTED_PAE:
     return 0xffffffff;
+  case LONG:
+  case LONG_32_COMPAT:
+  case LONG_16_COMPAT:
   default:
-    V3_ASSERT(0);
-    return 0;
+    PrintError("Unsupported Address Mode\n");
+    return -1;
   }
 }
 
@@ -228,11 +262,19 @@ static inline addr_t get_addr_linear(struct guest_info * info, addr_t addr, stru
         break;*/
 
   case PROTECTED:
+  case PROTECTED_PAE:
     return addr + seg->base;
     break;
+
+  case LONG:
+    // In long mode the segment bases are disregarded (forced to 0), unless using 
+    // FS or GS, then the base addresses are added
+    return addr + seg->base;
+  case LONG_32_COMPAT:
+  case LONG_16_COMPAT:
   default:
-    V3_ASSERT(0);
-    return 0;
+    PrintError("Unsupported Address Mode\n");
+    return -1;
   }
 }
 
@@ -301,7 +343,7 @@ static inline addr_t decode_register(struct v3_gprs * gprs, char reg_code, reg_s
 
 
 
-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
@@ -311,7 +353,7 @@ static inline operand_type_t decode_operands16(struct v3_gprs * gprs, // input/o
   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);
@@ -390,19 +432,19 @@ static inline operand_type_t decode_operands16(struct v3_gprs * gprs, // input/o
 
 
 
-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;