KVM: x86 emulator: simplify emulate_2op_cl()

emulate_2op_cl() is always called with the same parameters.  Simplify
by passing just the emulation context.

Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index 458914d..0b33884 100644 (file)
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -263,40 +263,37 @@ struct gprefix {
        __emulate_2op_nobyte(ctxt, _op, "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)        \
+#define __emulate_2op_cl(_op, ctxt, _suffix, _type)    \
        do {                                                            \
                unsigned long _tmp;                                     \
-               _type _clv  = (_cl).val;                                \
-               _type _srcv = (_src).val;                               \
-               _type _dstv = (_dst).val;                               \
+               _type _clv  = (ctxt)->src2.val;                         \
+               _type _srcv = (ctxt)->src.val;                          \
+               _type _dstv = (ctxt)->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)    \
+                       : "=m" ((ctxt)->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;                     \
+               (ctxt)->src2.val  = (unsigned long) _clv;               \
+               (ctxt)->src2.val = (unsigned long) _srcv;               \
+               (ctxt)->dst.val = (unsigned long) _dstv;                \
        } while (0)
 
-#define emulate_2op_cl(_op, _cl, _src, _dst, _eflags)                  \
+#define emulate_2op_cl(ctxt, _op)                                      \
        do {                                                            \
-               switch ((_dst).bytes) {                                 \
+               switch ((ctxt)->dst.bytes) {                            \
                case 2:                                                 \
-                       __emulate_2op_cl(_op, _cl, _src, _dst, _eflags, \
-                                        "w", unsigned short);          \
+                       __emulate_2op_cl(_op, ctxt, "w", u16);          \
                        break;                                          \
                case 4:                                                 \
-                       __emulate_2op_cl(_op, _cl, _src, _dst, _eflags, \
-                                        "l", unsigned int);            \
+                       __emulate_2op_cl(_op, ctxt, "l", u32);          \
                        break;                                          \
                case 8:                                                 \
-                       ON64(__emulate_2op_cl(_op, _cl, _src, _dst, _eflags, \
-                                             "q", unsigned long));     \
+                       ON64(__emulate_2op_cl(_op, ctxt, "q", ulong));  \
                        break;                                          \
                }                                                       \
        } while (0)
@@ -4123,7 +4120,7 @@ twobyte_insn:
                break;
        case 0xa4: /* shld imm8, r, r/m */
        case 0xa5: /* shld cl, r, r/m */
-               emulate_2op_cl("shld", ctxt->src2, ctxt->src, ctxt->dst, ctxt->eflags);
+               emulate_2op_cl(ctxt, "shld");
                break;
        case 0xa8:      /* push gs */
                rc = emulate_push_sreg(ctxt, VCPU_SREG_GS);
@@ -4137,7 +4134,7 @@ twobyte_insn:
                break;
        case 0xac: /* shrd imm8, r, r/m */
        case 0xad: /* shrd cl, r, r/m */
-               emulate_2op_cl("shrd", ctxt->src2, ctxt->src, ctxt->dst, ctxt->eflags);
+               emulate_2op_cl(ctxt, "shrd");
                break;
        case 0xae:              /* clflush */
                break;