Commit d175226a authored by Guillaume Thouvenin's avatar Guillaume Thouvenin Committed by Avi Kivity
Browse files

KVM: x86 emulator: add the assembler code for three operands 



Add the assembler code for instruction with three operands and one
operand is stored in ECX register

Signed-off-by: default avatarGuillaume Thouvenin <guillaume.thouvenin@ext.bull.net>
Signed-off-by: default avatarAvi Kivity <avi@redhat.com>
parent bfcadf83

arch/x86/kvm/x86_emulate.c

+39 −0
Original line number Diff line number Diff line
@@ -431,6 +431,45 @@ static u32 group2_table[] = { 
	__emulate_2op_nobyte(_op, _src, _dst, _eflags,			\

			     "w", "r", _LO32, "r", "", "r")



/* Instruction has three operands and one operand is stored in ECX register */

#define __emulate_2op_cl(_op, _cl, _src, _dst, _eflags, _suffix, _type) 	\

	do {									\

		unsigned long _tmp;						\

		_type _clv  = (_cl).val;  					\

		_type _srcv = (_src).val;    					\

		_type _dstv = (_dst).val;					\

										\

		__asm__ __volatile__ (						\

			_PRE_EFLAGS("0", "5", "2")				\

			_op _suffix " %4,%1 \n"					\

			_POST_EFLAGS("0", "5", "2")				\

			: "=m" (_eflags), "+r" (_dstv), "=&r" (_tmp)		\

			: "c" (_clv) , "r" (_srcv), "i" (EFLAGS_MASK)		\

			); 							\

										\

		(_cl).val  = (unsigned long) _clv;				\

		(_src).val = (unsigned long) _srcv;				\

		(_dst).val = (unsigned long) _dstv;				\

	} while (0)



#define emulate_2op_cl(_op, _cl, _src, _dst, _eflags)				\

	do {									\

		switch ((_dst).bytes) {						\

		case 2:								\

			__emulate_2op_cl(_op, _cl, _src, _dst, _eflags,  	\

						"w", unsigned short);         	\

			break;							\

		case 4: 							\

			__emulate_2op_cl(_op, _cl, _src, _dst, _eflags,  	\

						"l", unsigned int);           	\

			break;							\

		case 8:								\

			ON64(__emulate_2op_cl(_op, _cl, _src, _dst, _eflags,	\

						"q", unsigned long));  		\

			break;							\

		}								\

	} while (0)



#define __emulate_1op(_op, _dst, _eflags, _suffix)			\

	do {								\

		unsigned long _tmp;					\