emulate_umip

函数名称：mulate_umip_insn() - Emulate UMIP instructions and return dummy values*@insn: Instruction structure with operands*@umip_inst: A constant indicating the instruction to emulate*@data: Buffer into which the dummy result is stored*@data_size: Size of the

函数原型：static int emulate_umip_insn(struct insn *insn, int umip_inst, unsigned char *data, int *data_size, bool x86_64)

返回类型：int

参数：

类型	参数	名称
struct insn *	insn
int	umip_inst
unsigned char *	data
int *	data_size
bool	x86_64

207

如果非data或非data_size或非insn则返回:负EINVAL

218

如果umip_inst恒等于0F 01 /0 或umip_inst恒等于0F 01 /1 则

220

dummy_limit等于0

223

如果X86_MODRM_MOD(value)恒等于3则返回:负EINVAL

226

如果umip_inst恒等于0F 01 /0 则dummy_base_addr等于DOC: Emulation for User-Mode Instruction Prevention (UMIP)* User-Mode Instruction Prevention is a security feature present in recent* x86 processors that, when enabled, prevents a group of instructions (SGDT,* SIDT, SLDT, SMSW and STR) from being run in

228

否则dummy_base_addr等于UMIP_DUMMY_IDT_BASE

237

如果x86_64则data_size等于The SGDT and SIDT instructions store the contents of the global descriptor* table and interrupt table registers, respectively. The destination is a* memory operand of X+2 bytes. X bytes are used to store the base address of

239

否则data_size等于UMIP_GDT_IDT_BASE_SIZE_32BIT

242

memcpy(data + 2, & dummy_base_addr, * data_size)

244

data_size加等于UMIP_GDT_IDT_LIMIT_SIZE

245

memcpy(data, & dummy_limit, UMIP_GDT_IDT_LIMIT_SIZE)

247

否则如果umip_inst恒等于0F 01 /4 则

248

dummy_value等于CR0_STATE

258

如果X86_MODRM_MOD(value)恒等于3则data_size等于opnd_bytes

260

否则data_size等于2

263

memcpy(data, & dummy_value, * data_size)

265

否则

266

返回:负EINVAL

269

返回:0

**调用者**
名称	描述
fixup_umip_exception	xup_umip_exception() - Fixup a general protection fault caused by UMIP@regs: Registers as saved when entering the #GP handler The instructions SGDT, SIDT, STR, SMSW and SLDT cause a general protection* fault if executed with CPL > 0 (i

源代码转换工具开放的插件接口	X
支持：c/c++/esqlc/java Oracle/Informix/Mysql 插件可实现：逻辑报告代码生成和批量转换代码

函数逻辑报告