KVM: x86 emulator: implement RET imm16 (opcode C2) (40ece7c7) · Commits · e / devices / android_kernel_fairphone_FP5

arch/x86/kvm/emulate.c

+18 −1

Original line number	Diff line number	Diff line
		@@ -2249,6 +2249,21 @@ static int em_call_far(struct x86_emulate_ctxt *ctxt)
		return X86EMUL_CONTINUE;
		}

		static int em_ret_near_imm(struct x86_emulate_ctxt *ctxt)
		{
		struct decode_cache *c = &ctxt->decode;
		int rc;

		c->dst.type = OP_REG;
		c->dst.addr.reg = &c->eip;
		c->dst.bytes = c->op_bytes;
		rc = emulate_pop(ctxt, ctxt->ops, &c->dst.val, c->op_bytes);
		if (rc != X86EMUL_CONTINUE)
		return rc;
		register_address_increment(c, &c->regs[VCPU_REGS_RSP], c->src.val);
		return X86EMUL_CONTINUE;
		}

		#define D(_y) { .flags = (_y) }
		#define N D(0)
		#define G(_f, _g) { .flags = ((_f) \| Group), .u.group = (_g) }
		@@ -2394,7 +2409,9 @@ static struct opcode opcode_table[256] = {
		X8(D(DstReg \| SrcImm \| Mov)),
		/* 0xC0 - 0xC7 */
		D(ByteOp \| DstMem \| SrcImm \| ModRM), D(DstMem \| SrcImmByte \| ModRM),
		N, D(ImplicitOps \| Stack), N, N,
		I(ImplicitOps \| Stack \| SrcImmU16, em_ret_near_imm),
		D(ImplicitOps \| Stack),
		N, N,
		D(ByteOp \| DstMem \| SrcImm \| ModRM \| Mov), D(DstMem \| SrcImm \| ModRM \| Mov),
		/* 0xC8 - 0xCF */
		N, N, N, D(ImplicitOps \| Stack),