X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?p=palacios.git;a=blobdiff_plain;f=misc%2Fdecoder_test%2Fvmm_decoder.h;fp=misc%2Fdecoder_test%2Fvmm_decoder.h;h=0000000000000000000000000000000000000000;hp=0c7dcf43617ea31f073e240c3511cd6f54c26794;hb=7a6cd49101201e207daf7113a9048193835cebaf;hpb=320320a1c8681f2d8258a03dd087b3aed18b48a1 diff --git a/misc/decoder_test/vmm_decoder.h b/misc/decoder_test/vmm_decoder.h deleted file mode 100644 index 0c7dcf4..0000000 --- a/misc/decoder_test/vmm_decoder.h +++ /dev/null @@ -1,304 +0,0 @@ -#ifndef __VMM_EMULATE_H -#define __VMM_EMULATE_H - -#ifdef __V3VEE__ - -#include "test.h" -#include "vm_guest.h" - - -typedef enum {INVALID_OPERAND, REG_OPERAND, MEM_OPERAND, IMM_OPERAND} operand_type_t; - -struct x86_operand { - addr_t operand; - uint_t size; - operand_type_t type; -}; - -struct x86_prefixes { - uint_t lock : 1; // 0xF0 - uint_t repne : 1; // 0xF2 - uint_t repnz : 1; // 0xF2 - uint_t rep : 1; // 0xF3 - uint_t repe : 1; // 0xF3 - uint_t repz : 1; // 0xF3 - uint_t cs_override : 1; // 0x2E - uint_t ss_override : 1; // 0x36 - uint_t ds_override : 1; // 0x3E - uint_t es_override : 1; // 0x26 - uint_t fs_override : 1; // 0x64 - uint_t gs_override : 1; // 0x65 - uint_t br_not_taken : 1; // 0x2E - uint_t br_takend : 1; // 0x3E - uint_t op_size : 1; // 0x66 - uint_t addr_size : 1; // 0x67 -}; - - -struct x86_instr { - 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 src_operand; - struct x86_operand dst_operand; - struct x86_operand third_operand; - void * decoder_data; -}; - - - /************************/ - /* EXTERNAL DECODER API */ -/************************/ -/* - This is an External API definition that must be implemented by a decoder -*/ - - -/* - * Initializes a decoder - */ -int init_decoder(); - -/* - * Decodes an instruction - * All addresses in arguments are in the host address space - * instr_ptr is the host address of the instruction - * IMPORTANT: make sure the instr_ptr is in contiguous host memory - * ie. Copy it to a buffer before the call - */ -int v3_decode(struct guest_info * info, addr_t instr_ptr, struct x86_instr * instr); - -/* - * Encodes an instruction - * All addresses in arguments are in the host address space - * The instruction is encoded from the struct, and copied into a 15 byte host buffer - * referenced by instr_buf - * any unused bytes at the end of instr_buf will be filled with nops - * IMPORTANT: instr_buf must be allocated and 15 bytes long - */ -int v3_encode(struct guest_info * info, struct x86_instr * instr, char * instr_buf); - - - - - - - - - -/* - * JRL: Some of this was taken from the Xen sources... - */ - -#define PACKED __attribute__((packed)) - -#define MODRM_MOD(x) ((x >> 6) & 0x3) -#define MODRM_REG(x) ((x >> 3) & 0x7) -#define MODRM_RM(x) (x & 0x7) - -struct modrm_byte { - uint_t rm : 3 PACKED; - uint_t reg : 3 PACKED; - uint_t mod : 2 PACKED; -}; - - -#define SIB_BASE(x) ((x >> 6) & 0x3) -#define SIB_INDEX(x) ((x >> 3) & 0x7) -#define SIB_SCALE(x) (x & 0x7) - -struct sib_byte { - uint_t base : 3 PACKED; - uint_t index : 3 PACKED; - uint_t scale : 2 PACKED; -}; - - - -#define MAKE_INSTR(nm, ...) static const uchar_t V3_OPCODE_##nm[] = { __VA_ARGS__ } - -/* - * Here's how it works: - * First byte: Length. - * Following bytes: Opcode bytes. - * Special case: Last byte, if zero, doesn't need to match. - */ -MAKE_INSTR(INVD, 2, 0x0f, 0x08); -MAKE_INSTR(CPUID, 2, 0x0f, 0xa2); -MAKE_INSTR(RDMSR, 2, 0x0f, 0x32); -MAKE_INSTR(WRMSR, 2, 0x0f, 0x30); -MAKE_INSTR(RDTSC, 2, 0x0f, 0x31); -MAKE_INSTR(RDTSCP, 3, 0x0f, 0x01, 0xf9); -MAKE_INSTR(CLI, 1, 0xfa); -MAKE_INSTR(STI, 1, 0xfb); -MAKE_INSTR(RDPMC, 2, 0x0f, 0x33); -MAKE_INSTR(CLGI, 3, 0x0f, 0x01, 0xdd); -MAKE_INSTR(STGI, 3, 0x0f, 0x01, 0xdc); -MAKE_INSTR(VMRUN, 3, 0x0f, 0x01, 0xd8); -MAKE_INSTR(VMLOAD, 3, 0x0f, 0x01, 0xda); -MAKE_INSTR(VMSAVE, 3, 0x0f, 0x01, 0xdb); -MAKE_INSTR(VMCALL, 3, 0x0f, 0x01, 0xd9); -MAKE_INSTR(PAUSE, 2, 0xf3, 0x90); -MAKE_INSTR(SKINIT, 3, 0x0f, 0x01, 0xde); -MAKE_INSTR(MOV2CR, 3, 0x0f, 0x22, 0x00); -MAKE_INSTR(MOVCR2, 3, 0x0f, 0x20, 0x00); -MAKE_INSTR(MOV2DR, 3, 0x0f, 0x23, 0x00); -MAKE_INSTR(MOVDR2, 3, 0x0f, 0x21, 0x00); -MAKE_INSTR(PUSHF, 1, 0x9c); -MAKE_INSTR(POPF, 1, 0x9d); -MAKE_INSTR(RSM, 2, 0x0f, 0xaa); -MAKE_INSTR(INVLPG, 3, 0x0f, 0x01, 0x00); -MAKE_INSTR(INVLPGA,3, 0x0f, 0x01, 0xdf); -MAKE_INSTR(HLT, 1, 0xf4); -MAKE_INSTR(CLTS, 2, 0x0f, 0x06); -MAKE_INSTR(LMSW, 3, 0x0f, 0x01, 0x00); -MAKE_INSTR(SMSW, 3, 0x0f, 0x01, 0x00); - - -#define PREFIX_LOCK 0xF0 -#define PREFIX_REPNE 0xF2 -#define PREFIX_REPNZ 0xF2 -#define PREFIX_REP 0xF3 -#define PREFIX_REPE 0xF3 -#define PREFIX_REPZ 0xF3 -#define PREFIX_CS_OVERRIDE 0x2E -#define PREFIX_SS_OVERRIDE 0x36 -#define PREFIX_DS_OVERRIDE 0x3E -#define PREFIX_ES_OVERRIDE 0x26 -#define PREFIX_FS_OVERRIDE 0x64 -#define PREFIX_GS_OVERRIDE 0x65 -#define PREFIX_BR_NOT_TAKEN 0x2E -#define PREFIX_BR_TAKEN 0x3E -#define PREFIX_OP_SIZE 0x66 -#define PREFIX_ADDR_SIZE 0x67 - -int opcode_cmp(const uchar_t * op1, const uchar_t * op2); - - -static inline int is_prefix_byte(char byte) { - switch (byte) { - case 0xF0: // lock - case 0xF2: // REPNE/REPNZ - case 0xF3: // REP or REPE/REPZ - case 0x2E: // CS override or Branch hint not taken (with Jcc instrs) - case 0x36: // SS override - case 0x3E: // DS override or Branch hint taken (with Jcc instrs) - case 0x26: // ES override - case 0x64: // FS override - case 0x65: // GS override - //case 0x2E: // branch not taken hint - // case 0x3E: // branch taken hint - case 0x66: // operand size override - case 0x67: // address size override - return 1; - break; - default: - return 0; - break; - } -} - - -static inline v3_reg_t get_gpr_mask(struct guest_info * info) { - switch (info->cpu_mode) { - case REAL: - return 0xffff; - break; - case PROTECTED: - return 0xffffffff; - default: - V3_ASSERT(0); - return 0; - } -} - - -static inline addr_t get_addr_linear(struct guest_info * info, addr_t addr, struct v3_segment * seg) { - switch (info->cpu_mode) { - case REAL: - // It appears that the segment values are computed and cached in the vmcb structure - // We Need to check this for Intel - /* return addr + (seg->selector << 4); - break;*/ - - case PROTECTED: - return addr + seg->base; - break; - default: - V3_ASSERT(0); - 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; - - - - - - -struct v3_gprs; - -static inline addr_t decode_register(struct v3_gprs * gprs, char reg_code, reg_size_t reg_size) { - addr_t reg_addr; - - switch (reg_code) { - case 0: - reg_addr = (addr_t)&(gprs->rax); - break; - case 1: - reg_addr = (addr_t)&(gprs->rcx); - break; - case 2: - reg_addr = (addr_t)&(gprs->rdx); - break; - case 3: - reg_addr = (addr_t)&(gprs->rbx); - break; - case 4: - if (reg_size == REG8) { - reg_addr = (addr_t)&(gprs->rax) + 1; - } else { - reg_addr = (addr_t)&(gprs->rsp); - } - break; - case 5: - if (reg_size == REG8) { - reg_addr = (addr_t)&(gprs->rcx) + 1; - } else { - reg_addr = (addr_t)&(gprs->rbp); - } - break; - case 6: - if (reg_size == REG8) { - reg_addr = (addr_t)&(gprs->rdx) + 1; - } else { - reg_addr = (addr_t)&(gprs->rsi); - } - break; - case 7: - if (reg_size == REG8) { - reg_addr = (addr_t)&(gprs->rbx) + 1; - } else { - reg_addr = (addr_t)&(gprs->rdi); - } - break; - default: - reg_addr = 0; - break; - } - - return reg_addr; -} - - - - - -#endif // !__V3VEE__ - - -#endif