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Commit 7a957275 authored by Harvey Harrison's avatar Harvey Harrison Committed by Avi Kivity
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KVM: x86 emulator: make register_address_increment and JMP_REL static inlines 



Change jmp_rel() to a function as well.

Signed-off-by: default avatarHarvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: default avatarAvi Kivity <avi@qumranet.com>
parent e4706772

arch/x86/kvm/x86_emulate.c

+26 −30
Original line number Diff line number Diff line
@@ -501,23 +501,19 @@ register_address(struct decode_cache *c, unsigned long base, unsigned long reg) 
	return base + address_mask(c, reg);

}



#define register_address_increment(reg, inc)                            \

	do {								\

		/* signed type ensures sign extension to long */        \

		int _inc = (inc);					\

		if (c->ad_bytes == sizeof(unsigned long))		\

			(reg) += _inc;					\

		else							\

			(reg) = ((reg) & 				\

				 ~ad_mask(c)) |	\

				(((reg) + _inc) &			\

				 ad_mask(c));	\

	} while (0)

static inline void

register_address_increment(struct decode_cache *c, unsigned long *reg, int inc)

{

	if (c->ad_bytes == sizeof(unsigned long))

		*reg += inc;

	else

		*reg = (*reg & ~ad_mask(c)) | ((*reg + inc) & ad_mask(c));

}



#define JMP_REL(rel) 							\

	do {								\

		register_address_increment(c->eip, rel);		\

	} while (0)

static inline void jmp_rel(struct decode_cache *c, int rel)

{

	register_address_increment(c, &c->eip, rel);

}



static int do_fetch_insn_byte(struct x86_emulate_ctxt *ctxt,

			      struct x86_emulate_ops *ops,
@@ -1065,7 +1061,7 @@ static inline void emulate_push(struct x86_emulate_ctxt *ctxt) 
	c->dst.type  = OP_MEM;

	c->dst.bytes = c->op_bytes;

	c->dst.val = c->src.val;

	register_address_increment(c->regs[VCPU_REGS_RSP], -c->op_bytes);

	register_address_increment(c, &c->regs[VCPU_REGS_RSP], -c->op_bytes);

	c->dst.ptr = (void *) register_address(c, ctxt->ss_base,

					       c->regs[VCPU_REGS_RSP]);

}
@@ -1082,7 +1078,7 @@ static inline int emulate_grp1a(struct x86_emulate_ctxt *ctxt, 
	if (rc != 0)

		return rc;



	register_address_increment(c->regs[VCPU_REGS_RSP], c->dst.bytes);

	register_address_increment(c, &c->regs[VCPU_REGS_RSP], c->dst.bytes);



	return 0;

}
@@ -1395,7 +1391,7 @@ x86_emulate_insn(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops) 
		c->dst.type  = OP_MEM;

		c->dst.bytes = c->op_bytes;

		c->dst.val = c->src.val;

		register_address_increment(c->regs[VCPU_REGS_RSP],

		register_address_increment(c, &c->regs[VCPU_REGS_RSP],

					   -c->op_bytes);

		c->dst.ptr = (void *) register_address(

			c, ctxt->ss_base, c->regs[VCPU_REGS_RSP]);
@@ -1407,7 +1403,7 @@ x86_emulate_insn(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops) 
			c->op_bytes, ctxt->vcpu)) != 0)

			goto done;



		register_address_increment(c->regs[VCPU_REGS_RSP],

		register_address_increment(c, &c->regs[VCPU_REGS_RSP],

					   c->op_bytes);

		c->dst.type = OP_NONE;	/* Disable writeback. */

		break;
@@ -1459,7 +1455,7 @@ x86_emulate_insn(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops) 
		int rel = insn_fetch(s8, 1, c->eip);



		if (test_cc(c->b, ctxt->eflags))

			JMP_REL(rel);

			jmp_rel(c, rel);

		break;

	}

	case 0x80 ... 0x83:	/* Grp1 */
@@ -1545,10 +1541,10 @@ x86_emulate_insn(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops) 
					&c->dst.val,

					c->dst.bytes, ctxt->vcpu)) != 0)

			goto done;

		register_address_increment(c->regs[VCPU_REGS_RSI],

		register_address_increment(c, &c->regs[VCPU_REGS_RSI],

				       (ctxt->eflags & EFLG_DF) ? -c->dst.bytes

							   : c->dst.bytes);

		register_address_increment(c->regs[VCPU_REGS_RDI],

		register_address_increment(c, &c->regs[VCPU_REGS_RDI],

				       (ctxt->eflags & EFLG_DF) ? -c->dst.bytes

							   : c->dst.bytes);

		break;
@@ -1580,10 +1576,10 @@ x86_emulate_insn(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops) 


		emulate_2op_SrcV("cmp", c->src, c->dst, ctxt->eflags);



		register_address_increment(c->regs[VCPU_REGS_RSI],

		register_address_increment(c, &c->regs[VCPU_REGS_RSI],

				       (ctxt->eflags & EFLG_DF) ? -c->src.bytes

								  : c->src.bytes);

		register_address_increment(c->regs[VCPU_REGS_RDI],

		register_address_increment(c, &c->regs[VCPU_REGS_RDI],

				       (ctxt->eflags & EFLG_DF) ? -c->dst.bytes

								  : c->dst.bytes);
@@ -1595,7 +1591,7 @@ x86_emulate_insn(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops) 
						   ctxt->es_base,

						   c->regs[VCPU_REGS_RDI]);

		c->dst.val = c->regs[VCPU_REGS_RAX];

		register_address_increment(c->regs[VCPU_REGS_RDI],

		register_address_increment(c, &c->regs[VCPU_REGS_RDI],

				       (ctxt->eflags & EFLG_DF) ? -c->dst.bytes

							   : c->dst.bytes);

		break;
@@ -1611,7 +1607,7 @@ x86_emulate_insn(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops) 
						 c->dst.bytes,

						 ctxt->vcpu)) != 0)

			goto done;

		register_address_increment(c->regs[VCPU_REGS_RSI],

		register_address_increment(c, &c->regs[VCPU_REGS_RSI],

				       (ctxt->eflags & EFLG_DF) ? -c->dst.bytes

							   : c->dst.bytes);

		break;
@@ -1650,14 +1646,14 @@ x86_emulate_insn(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops) 
			goto cannot_emulate;

		}

		c->src.val = (unsigned long) c->eip;

		JMP_REL(rel);

		jmp_rel(c, rel);

		c->op_bytes = c->ad_bytes;

		emulate_push(ctxt);

		break;

	}

	case 0xe9: /* jmp rel */

	case 0xeb: /* jmp rel short */

		JMP_REL(c->src.val);

		jmp_rel(c, c->src.val);

		c->dst.type = OP_NONE; /* Disable writeback. */

		break;

	case 0xf4:              /* hlt */
@@ -1857,7 +1853,7 @@ x86_emulate_insn(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops) 
			goto cannot_emulate;

		}

		if (test_cc(c->b, ctxt->eflags))

			JMP_REL(rel);

			jmp_rel(c, rel);

		c->dst.type = OP_NONE;

		break;

	}