*** empty log message ***

[palacios.git] / palacios / include / geekos / vmm_emulate.h

diff --git a/palacios/include/geekos/vmm_emulate.h b/palacios/include/geekos/vmm_emulate.h
index 5c0c9c5..572cc98 100644 (file)
--- a/palacios/include/geekos/vmm_emulate.h
+++ b/palacios/include/geekos/vmm_emulate.h
@@ -6,35 +6,7 @@
 /*
  * 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 
- *
- * Before we begin I'd just like to say a few words to those that made this possible...
- *
- *
- *                                  _____
- *                                 ||   ||
- *                                 |\___/|
- *                                 |     |
- *                                 |     |
- *                                 |     |
- *                                 |     |
- *                                 |     |
- *                                 |     |
- *                            _____|<--->|_____
- *                        ___/     |     |      \
- *                      /    |     |     |     | \
- *                      |    |     |     |     |  |
- *                      |    |     |     |     |  |
- *                      |                      |  |
- *                      |                      |  |
- *                      |    Fuck You Intel!     /
- *                      |                       /
- *                       \                    /
- *                        \                  /
- *                         |                 |
- *                         |                 |
- *
- * That is all.
- *
+
  */
 
 
@@ -107,6 +79,23 @@ MAKE_INSTR(LMSW,   3, 0x0f, 0x01, 0x00);
 MAKE_INSTR(SMSW,   3, 0x0f, 0x01, 0x00);
 
 
+static const uchar_t PREFIX_LOCK = 0xF0;
+static const uchar_t PREFIX_REPNE = 0xF2;
+static const uchar_t PREFIX_REPNZ = 0xF2;
+static const uchar_t PREFIX_REP = 0xF3;
+static const uchar_t PREFIX_REPE = 0xF3;
+static const uchar_t PREFIX_REPZ = 0xF3;
+static const uchar_t PREFIX_CS_OVERRIDE = 0x2E;
+static const uchar_t PREFIX_SS_OVERRIDE = 0x36;
+static const uchar_t PREFIX_DS_OVERRIDE = 0x3E;
+static const uchar_t PREFIX_ES_OVERRIDE = 0x26;
+static const uchar_t PREFIX_FS_OVERRIDE = 0x64;
+static const uchar_t PREFIX_GS_OVERRIDE = 0x65;
+static const uchar_t PREFIX_BR_NOT_TAKEN = 0x2E;
+static const uchar_t PREFIX_BR_TAKEN = 0x3E;
+static const uchar_t PREFIX_OP_SIZE = 0x66;
+static const uchar_t PREFIX_ADDR_SIZE = 0x67;
+
 
 static inline int is_prefix_byte(char byte) {
   switch (byte) {
@@ -131,6 +120,23 @@ static inline int is_prefix_byte(char byte) {
   }
 }
 
+
+
+static inline addr_t get_addr_linear(struct guest_info * info, addr_t addr, addr_t seg_base) {
+  switch (info->cpu_mode) {
+  case REAL:
+    return addr + (seg_base << 4);
+    break;
+  case PROTECTED:
+  case PROTECTED_PG:
+    return addr + seg_base;
+    break;
+  default:
+    return 0;
+  }
+}
+
+
 typedef enum {INVALID_ADDR_TYPE, REG, DISP0, DISP8, DISP16, DISP32} modrm_mode_t;
 typedef enum {INVALID_REG_SIZE, REG64, REG32, REG16, REG8} reg_size_t;
 typedef enum {INVALID_OPERAND, REG_OPERAND, MEM_OPERAND} operand_type_t;