Import the NetBSD test suite from ^/vendor/NetBSD/tests/09.30.2014_20.45 ,

minus the vendor Makefiles

Provide directions for how to bootstrap the vendor sources in
FREEBSD-upgrade

MFC after 2 weeks
Discussed with: rpaulo
Sponsored by: EMC / Isilon Storage Division

1 files changed, 657 insertions, 0 deletions

diff --git a/contrib/netbsd-tests/lib/libbpfjit/t_cop.c b/contrib/netbsd-tests/lib/libbpfjit/t_cop.c
new file mode 100644
index 0000000..7b3b086
--- /dev/null
+++ b/contrib/netbsd-tests/lib/libbpfjit/t_cop.c
@@ -0,0 +1,657 @@
+/*	$NetBSD: t_cop.c,v 1.4 2014/07/13 21:35:33 alnsn Exp $ */
+
+/*-
+ * Copyright (c) 2013-2014 Alexander Nasonov.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__RCSID("$NetBSD: t_cop.c,v 1.4 2014/07/13 21:35:33 alnsn Exp $");
+
+#include <atf-c.h>
+#include <stdint.h>
+#include <string.h>
+
+#define __BPF_PRIVATE
+#include <net/bpf.h>
+#include <net/bpfjit.h>
+
+static uint32_t retA(const bpf_ctx_t *bc, bpf_args_t *args, uint32_t A);
+static uint32_t retBL(const bpf_ctx_t *bc, bpf_args_t *args, uint32_t A);
+static uint32_t retWL(const bpf_ctx_t *bc, bpf_args_t *args, uint32_t A);
+static uint32_t retNF(const bpf_ctx_t *bc, bpf_args_t *args, uint32_t A);
+static uint32_t setARG(const bpf_ctx_t *bc, bpf_args_t *args, uint32_t A);
+
+static const bpf_copfunc_t copfuncs[] = {
+	&retA,
+	&retBL,
+	&retWL,
+	&retNF,
+	&setARG
+};
+
+static const bpf_ctx_t ctx = {
+	.copfuncs = copfuncs,
+	.nfuncs = sizeof(copfuncs) / sizeof(copfuncs[0]),
+	.extwords = 0
+};
+
+static uint32_t
+retA(const bpf_ctx_t *bc, bpf_args_t *args, uint32_t A)
+{
+
+	return A;
+}
+
+static uint32_t
+retBL(const bpf_ctx_t *bc, bpf_args_t *args, uint32_t A)
+{
+
+	return args->buflen;
+}
+
+static uint32_t
+retWL(const bpf_ctx_t *bc, bpf_args_t *args, uint32_t A)
+{
+
+	return args->wirelen;
+}
+
+static uint32_t
+retNF(const bpf_ctx_t *bc, bpf_args_t *args, uint32_t A)
+{
+
+	return bc->nfuncs;
+}
+
+/*
+ * COP function with a side effect.
+ */
+static uint32_t
+setARG(const bpf_ctx_t *bc, bpf_args_t *args, uint32_t A)
+{
+	bool *arg = (bool *)args->arg;
+	bool old = *arg;
+
+	*arg = true;
+	return old;
+}
+
+ATF_TC(libbpfjit_cop_no_ctx);
+ATF_TC_HEAD(libbpfjit_cop_no_ctx, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test that bpf program with BPF_COP "
+	    "instruction isn't valid without a context");
+}
+
+ATF_TC_BODY(libbpfjit_cop_no_ctx, tc)
+{
+	static struct bpf_insn insns[] = {
+		BPF_STMT(BPF_MISC+BPF_COP, 0),
+		BPF_STMT(BPF_RET+BPF_K, 7)
+	};
+
+	bpfjit_func_t code;
+
+	size_t insn_count = sizeof(insns) / sizeof(insns[0]);
+
+	ATF_CHECK(!bpf_validate(insns, insn_count));
+
+	code = bpfjit_generate_code(NULL, insns, insn_count);
+	ATF_CHECK(code == NULL);
+}
+
+ATF_TC(libbpfjit_cop_ret_A);
+ATF_TC_HEAD(libbpfjit_cop_ret_A, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test coprocessor function "
+	    "that returns a content of the A register");
+}
+
+ATF_TC_BODY(libbpfjit_cop_ret_A, tc)
+{
+	static struct bpf_insn insns[] = {
+		BPF_STMT(BPF_LD+BPF_IMM, 13),
+		BPF_STMT(BPF_MISC+BPF_COP, 0), // retA
+		BPF_STMT(BPF_RET+BPF_A, 0)
+	};
+
+	bpfjit_func_t code;
+	uint8_t pkt[1] = { 0 };
+	bpf_args_t args = {
+		.pkt = pkt,
+		.buflen = sizeof(pkt),
+		.wirelen = sizeof(pkt),
+	};
+
+	size_t insn_count = sizeof(insns) / sizeof(insns[0]);
+
+	code = bpfjit_generate_code(&ctx, insns, insn_count);
+	ATF_REQUIRE(code != NULL);
+
+	ATF_CHECK(code(&ctx, &args) == 13);
+
+	bpfjit_free_code(code);
+}
+
+ATF_TC(libbpfjit_cop_ret_buflen);
+ATF_TC_HEAD(libbpfjit_cop_ret_buflen, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test coprocessor function "
+	    "that returns the buflen argument");
+}
+
+ATF_TC_BODY(libbpfjit_cop_ret_buflen, tc)
+{
+	static struct bpf_insn insns[] = {
+		BPF_STMT(BPF_LD+BPF_IMM, 13),
+		BPF_STMT(BPF_MISC+BPF_COP, 1), // retBL
+		BPF_STMT(BPF_RET+BPF_A, 0)
+	};
+
+	bpfjit_func_t code;
+	uint8_t pkt[1] = { 0 };
+	bpf_args_t args = {
+		.pkt = pkt,
+		.buflen = sizeof(pkt),
+		.wirelen = sizeof(pkt)
+	};
+
+	size_t insn_count = sizeof(insns) / sizeof(insns[0]);
+
+	code = bpfjit_generate_code(&ctx, insns, insn_count);
+	ATF_REQUIRE(code != NULL);
+
+	ATF_CHECK(code(&ctx, &args) == sizeof(pkt));
+
+	bpfjit_free_code(code);
+}
+
+ATF_TC(libbpfjit_cop_ret_wirelen);
+ATF_TC_HEAD(libbpfjit_cop_ret_wirelen, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test coprocessor function "
+	    "that returns the wirelen argument");
+}
+
+ATF_TC_BODY(libbpfjit_cop_ret_wirelen, tc)
+{
+	static struct bpf_insn insns[] = {
+		BPF_STMT(BPF_LD+BPF_IMM, 13),
+		BPF_STMT(BPF_MISC+BPF_COP, 2), // retWL
+		BPF_STMT(BPF_RET+BPF_A, 0)
+	};
+
+	bpfjit_func_t code;
+	uint8_t pkt[1] = { 0 };
+	bpf_args_t args = {
+		.pkt = pkt,
+		.buflen = sizeof(pkt),
+		.wirelen = sizeof(pkt)
+	};
+
+	size_t insn_count = sizeof(insns) / sizeof(insns[0]);
+
+	code = bpfjit_generate_code(&ctx, insns, insn_count);
+	ATF_REQUIRE(code != NULL);
+
+	ATF_CHECK(code(&ctx, &args) == sizeof(pkt));
+
+	bpfjit_free_code(code);
+}
+
+ATF_TC(libbpfjit_cop_ret_nfuncs);
+ATF_TC_HEAD(libbpfjit_cop_ret_nfuncs, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test coprocessor function "
+	    "that returns nfuncs member of the context argument");
+}
+
+ATF_TC_BODY(libbpfjit_cop_ret_nfuncs, tc)
+{
+	static struct bpf_insn insns[] = {
+		BPF_STMT(BPF_LD+BPF_IMM, 13),
+		BPF_STMT(BPF_MISC+BPF_COP, 3), // retNF
+		BPF_STMT(BPF_RET+BPF_A, 0)
+	};
+
+	bpfjit_func_t code;
+	uint8_t pkt[1] = { 0 };
+	bpf_args_t args = {
+		.pkt = pkt,
+		.buflen = sizeof(pkt),
+		.wirelen = sizeof(pkt)
+	};
+
+	size_t insn_count = sizeof(insns) / sizeof(insns[0]);
+
+	code = bpfjit_generate_code(&ctx, insns, insn_count);
+	ATF_REQUIRE(code != NULL);
+
+	ATF_CHECK(code(&ctx, &args) == ctx.nfuncs);
+
+	bpfjit_free_code(code);
+}
+
+ATF_TC(libbpfjit_cop_side_effect);
+ATF_TC_HEAD(libbpfjit_cop_side_effect, tc)
+{
+	atf_tc_set_md_var(tc, "descr",
+	    "Test that ABC optimization doesn't skip BPF_COP call");
+}
+
+ATF_TC_BODY(libbpfjit_cop_side_effect, tc)
+{
+	static struct bpf_insn insns[] = {
+		BPF_STMT(BPF_LD+BPF_IMM, 13),
+		BPF_STMT(BPF_LD+BPF_B+BPF_ABS, 0),
+		BPF_STMT(BPF_MISC+BPF_COP, 4), // setARG
+		BPF_STMT(BPF_LD+BPF_B+BPF_ABS, 99999),
+		BPF_STMT(BPF_RET+BPF_A, 0)
+	};
+
+	bpfjit_func_t code;
+	bool arg = false;
+	uint8_t pkt[1] = { 0 };
+	bpf_args_t args = {
+		.pkt = pkt,
+		.buflen = sizeof(pkt),
+		.wirelen = sizeof(pkt),
+		.mem = NULL,
+		.arg = &arg
+	};
+
+	size_t insn_count = sizeof(insns) / sizeof(insns[0]);
+
+	code = bpfjit_generate_code(&ctx, insns, insn_count);
+	ATF_REQUIRE(code != NULL);
+
+	ATF_CHECK(code(&ctx, &args) == 0);
+	ATF_CHECK(arg == true);
+
+	bpfjit_free_code(code);
+}
+
+ATF_TC(libbpfjit_cop_copx);
+ATF_TC_HEAD(libbpfjit_cop_copx, tc)
+{
+	atf_tc_set_md_var(tc, "descr",
+	    "Test BPF_COP call followed by BPF_COPX call");
+}
+
+ATF_TC_BODY(libbpfjit_cop_copx, tc)
+{
+	static struct bpf_insn insns[] = {
+		BPF_STMT(BPF_LD+BPF_IMM, 1),         /* A <- 1    */
+		BPF_STMT(BPF_MISC+BPF_COP, 0),       /* retA      */
+		BPF_STMT(BPF_MISC+BPF_TAX, 0),       /* X <- A    */
+		BPF_STMT(BPF_LD+BPF_B+BPF_ABS, 0),   /* A = P[0]  */
+		BPF_STMT(BPF_ALU+BPF_ADD+BPF_X, 1),  /* A = A + X */
+		BPF_STMT(BPF_MISC+BPF_TAX, 0),       /* X <- A    */
+		BPF_STMT(BPF_MISC+BPF_COPX, 0),      /* retNF     */
+		BPF_STMT(BPF_ALU+BPF_ADD+BPF_X, 1),  /* A = A + X */
+		BPF_STMT(BPF_RET+BPF_A, 0)
+	};
+
+	bpfjit_func_t code;
+	uint8_t pkt[1] = { 2 };
+	bpf_args_t args = {
+		.pkt = pkt,
+		.buflen = sizeof(pkt),
+		.wirelen = sizeof(pkt),
+	};
+
+	size_t insn_count = sizeof(insns) / sizeof(insns[0]);
+
+	code = bpfjit_generate_code(&ctx, insns, insn_count);
+	ATF_REQUIRE(code != NULL);
+
+	ATF_CHECK(code(&ctx, &args) == 3 + ctx.nfuncs);
+
+	bpfjit_free_code(code);
+}
+
+ATF_TC(libbpfjit_cop_invalid_index);
+ATF_TC_HEAD(libbpfjit_cop_invalid_index, tc)
+{
+	atf_tc_set_md_var(tc, "descr",
+	    "Test that out-of-range coprocessor function fails validation");
+}
+
+ATF_TC_BODY(libbpfjit_cop_invalid_index, tc)
+{
+	static struct bpf_insn insns[] = {
+		BPF_STMT(BPF_LD+BPF_IMM, 13),
+		BPF_STMT(BPF_MISC+BPF_COP, 6), // invalid index
+		BPF_STMT(BPF_RET+BPF_K, 27)
+	};
+
+	size_t insn_count = sizeof(insns) / sizeof(insns[0]);
+
+	ATF_CHECK(bpfjit_generate_code(&ctx, insns, insn_count) == NULL);
+}
+
+ATF_TC(libbpfjit_copx_no_ctx);
+ATF_TC_HEAD(libbpfjit_copx_no_ctx, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test that bpf program with BPF_COPX "
+	    "instruction isn't valid without a context");
+}
+
+ATF_TC_BODY(libbpfjit_copx_no_ctx, tc)
+{
+	static struct bpf_insn insns[] = {
+		BPF_STMT(BPF_MISC+BPF_COP, 0),
+		BPF_STMT(BPF_RET+BPF_K, 7)
+	};
+
+	bpfjit_func_t code;
+
+	size_t insn_count = sizeof(insns) / sizeof(insns[0]);
+
+	ATF_CHECK(!bpf_validate(insns, insn_count));
+
+	code = bpfjit_generate_code(NULL, insns, insn_count);
+	ATF_CHECK(code == NULL);
+}
+
+ATF_TC(libbpfjit_copx_ret_A);
+ATF_TC_HEAD(libbpfjit_copx_ret_A, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test coprocessor function "
+	    "that returns a content of the A register");
+}
+
+ATF_TC_BODY(libbpfjit_copx_ret_A, tc)
+{
+	static struct bpf_insn insns[] = {
+		BPF_STMT(BPF_LD+BPF_IMM, 13),
+		BPF_STMT(BPF_LDX+BPF_IMM, 0), // retA
+		BPF_STMT(BPF_MISC+BPF_COPX, 0),
+		BPF_STMT(BPF_RET+BPF_A, 0)
+	};
+
+	bpfjit_func_t code;
+	uint8_t pkt[1] = { 0 };
+	bpf_args_t args = {
+		.pkt = pkt,
+		.buflen = sizeof(pkt),
+		.wirelen = sizeof(pkt),
+	};
+
+	size_t insn_count = sizeof(insns) / sizeof(insns[0]);
+
+	code = bpfjit_generate_code(&ctx, insns, insn_count);
+	ATF_REQUIRE(code != NULL);
+
+	ATF_CHECK(code(&ctx, &args) == 13);
+
+	bpfjit_free_code(code);
+}
+
+ATF_TC(libbpfjit_copx_ret_buflen);
+ATF_TC_HEAD(libbpfjit_copx_ret_buflen, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test coprocessor function "
+	    "that returns the buflen argument");
+}
+
+ATF_TC_BODY(libbpfjit_copx_ret_buflen, tc)
+{
+	static struct bpf_insn insns[] = {
+		BPF_STMT(BPF_LD+BPF_IMM, 13),
+		BPF_STMT(BPF_LDX+BPF_IMM, 1), // retBL
+		BPF_STMT(BPF_MISC+BPF_COPX, 0),
+		BPF_STMT(BPF_RET+BPF_A, 0)
+	};
+
+	bpfjit_func_t code;
+	uint8_t pkt[1] = { 0 };
+	bpf_args_t args = {
+		.pkt = pkt,
+		.buflen = sizeof(pkt),
+		.wirelen = sizeof(pkt)
+	};
+
+	size_t insn_count = sizeof(insns) / sizeof(insns[0]);
+
+	code = bpfjit_generate_code(&ctx, insns, insn_count);
+	ATF_REQUIRE(code != NULL);
+
+	ATF_CHECK(code(&ctx, &args) == sizeof(pkt));
+
+	bpfjit_free_code(code);
+}
+
+ATF_TC(libbpfjit_copx_ret_wirelen);
+ATF_TC_HEAD(libbpfjit_copx_ret_wirelen, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test coprocessor function "
+	    "that returns the wirelen argument");
+}
+
+ATF_TC_BODY(libbpfjit_copx_ret_wirelen, tc)
+{
+	static struct bpf_insn insns[] = {
+		BPF_STMT(BPF_LDX+BPF_IMM, 2), // retWL
+		BPF_STMT(BPF_LD+BPF_IMM, 13),
+		BPF_STMT(BPF_MISC+BPF_COPX, 0),
+		BPF_STMT(BPF_RET+BPF_A, 0)
+	};
+
+	bpfjit_func_t code;
+	uint8_t pkt[1] = { 0 };
+	bpf_args_t args = {
+		.pkt = pkt,
+		.buflen = sizeof(pkt),
+		.wirelen = sizeof(pkt)
+	};
+
+	size_t insn_count = sizeof(insns) / sizeof(insns[0]);
+
+	code = bpfjit_generate_code(&ctx, insns, insn_count);
+	ATF_REQUIRE(code != NULL);
+
+	ATF_CHECK(code(&ctx, &args) == sizeof(pkt));
+
+	bpfjit_free_code(code);
+}
+
+ATF_TC(libbpfjit_copx_ret_nfuncs);
+ATF_TC_HEAD(libbpfjit_copx_ret_nfuncs, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test coprocessor function "
+	    "that returns nfuncs member of the context argument");
+}
+
+ATF_TC_BODY(libbpfjit_copx_ret_nfuncs, tc)
+{
+	static struct bpf_insn insns[] = {
+		BPF_STMT(BPF_LD+BPF_IMM, 13),
+		BPF_STMT(BPF_LDX+BPF_IMM, 3), // retNF
+		BPF_STMT(BPF_MISC+BPF_COPX, 0),
+		BPF_STMT(BPF_RET+BPF_A, 0)
+	};
+
+	bpfjit_func_t code;
+	uint8_t pkt[1] = { 0 };
+	bpf_args_t args = {
+		.pkt = pkt,
+		.buflen = sizeof(pkt),
+		.wirelen = sizeof(pkt)
+	};
+
+	size_t insn_count = sizeof(insns) / sizeof(insns[0]);
+
+	code = bpfjit_generate_code(&ctx, insns, insn_count);
+	ATF_REQUIRE(code != NULL);
+
+	ATF_CHECK(code(&ctx, &args) == ctx.nfuncs);
+
+	bpfjit_free_code(code);
+}
+
+ATF_TC(libbpfjit_copx_side_effect);
+ATF_TC_HEAD(libbpfjit_copx_side_effect, tc)
+{
+	atf_tc_set_md_var(tc, "descr",
+	    "Test that ABC optimization doesn't skip BPF_COPX call");
+}
+
+ATF_TC_BODY(libbpfjit_copx_side_effect, tc)
+{
+	static struct bpf_insn insns[] = {
+		BPF_STMT(BPF_LD+BPF_IMM, 13),
+		BPF_STMT(BPF_LD+BPF_B+BPF_ABS, 0),
+		BPF_STMT(BPF_LDX+BPF_IMM, 4), // setARG
+		BPF_STMT(BPF_MISC+BPF_COPX, 0),
+		BPF_STMT(BPF_LD+BPF_B+BPF_ABS, 99999),
+		BPF_STMT(BPF_RET+BPF_A, 0)
+	};
+
+	bpfjit_func_t code;
+	bool arg = false;
+	uint8_t pkt[1] = { 0 };
+	bpf_args_t args = {
+		.pkt = pkt,
+		.buflen = sizeof(pkt),
+		.wirelen = sizeof(pkt),
+		.mem = NULL,
+		.arg = &arg
+	};
+
+	size_t insn_count = sizeof(insns) / sizeof(insns[0]);
+
+	code = bpfjit_generate_code(&ctx, insns, insn_count);
+	ATF_REQUIRE(code != NULL);
+
+	ATF_CHECK(code(&ctx, &args) == 0);
+	ATF_CHECK(arg == true);
+
+	bpfjit_free_code(code);
+}
+
+ATF_TC(libbpfjit_copx_cop);
+ATF_TC_HEAD(libbpfjit_copx_cop, tc)
+{
+	atf_tc_set_md_var(tc, "descr",
+	    "Test BPF_COPX call followed by BPF_COP call");
+}
+
+ATF_TC_BODY(libbpfjit_copx_cop, tc)
+{
+	static struct bpf_insn insns[] = {
+		BPF_STMT(BPF_LDX+BPF_IMM, 2),        /* X <- 2    */
+		BPF_STMT(BPF_MISC+BPF_COPX, 0),      /* retWL     */
+		BPF_STMT(BPF_ALU+BPF_ADD+BPF_X, 1),  /* A = A + X */
+		BPF_STMT(BPF_MISC+BPF_TAX, 0),       /* X <- A    */
+		BPF_STMT(BPF_LD+BPF_B+BPF_ABS, 0),   /* A = P[0]  */
+		BPF_STMT(BPF_ALU+BPF_ADD+BPF_X, 1),  /* A = A + X */
+		BPF_STMT(BPF_MISC+BPF_TAX, 0),       /* X <- A    */
+		BPF_STMT(BPF_MISC+BPF_COP, 3),      /* retNF     */
+		BPF_STMT(BPF_ALU+BPF_ADD+BPF_X, 1),  /* A = A + X */
+		BPF_STMT(BPF_RET+BPF_A, 0)
+	};
+
+	bpfjit_func_t code;
+	uint8_t pkt[1] = { 2 };
+	bpf_args_t args = {
+		.pkt = pkt,
+		.buflen = sizeof(pkt),
+		.wirelen = sizeof(pkt),
+	};
+
+	size_t insn_count = sizeof(insns) / sizeof(insns[0]);
+
+	code = bpfjit_generate_code(&ctx, insns, insn_count);
+	ATF_REQUIRE(code != NULL);
+
+	ATF_CHECK(code(&ctx, &args) == 5 + ctx.nfuncs);
+
+	bpfjit_free_code(code);
+}
+
+ATF_TC(libbpfjit_copx_invalid_index);
+ATF_TC_HEAD(libbpfjit_copx_invalid_index, tc)
+{
+	atf_tc_set_md_var(tc, "descr",
+	    "Test that out-of-range BPF_COPX call fails at runtime");
+}
+
+ATF_TC_BODY(libbpfjit_copx_invalid_index, tc)
+{
+	static struct bpf_insn insns[] = {
+		BPF_STMT(BPF_LDX+BPF_IMM, 5), // invalid index
+		BPF_STMT(BPF_MISC+BPF_COPX, 0),
+		BPF_STMT(BPF_RET+BPF_K, 27)
+	};
+
+	bpfjit_func_t code;
+	uint8_t pkt[1] = { 0 };
+	bpf_args_t args = {
+		.pkt = pkt,
+		.buflen = sizeof(pkt),
+		.wirelen = sizeof(pkt)
+	};
+
+	size_t insn_count = sizeof(insns) / sizeof(insns[0]);
+
+	code = bpfjit_generate_code(&ctx, insns, insn_count);
+	ATF_REQUIRE(code != NULL);
+
+	ATF_CHECK(code(&ctx, &args) == 0);
+
+	bpfjit_free_code(code);
+}
+
+ATF_TP_ADD_TCS(tp)
+{
+
+	/*
+	 * For every new test please also add a similar test
+	 * to ../../net/bpfjit/t_cop.c
+	 */
+	ATF_TP_ADD_TC(tp, libbpfjit_cop_no_ctx);
+	ATF_TP_ADD_TC(tp, libbpfjit_cop_ret_A);
+	ATF_TP_ADD_TC(tp, libbpfjit_cop_ret_buflen);
+	ATF_TP_ADD_TC(tp, libbpfjit_cop_ret_wirelen);
+	ATF_TP_ADD_TC(tp, libbpfjit_cop_ret_nfuncs);
+	ATF_TP_ADD_TC(tp, libbpfjit_cop_side_effect);
+	ATF_TP_ADD_TC(tp, libbpfjit_cop_copx);
+	ATF_TP_ADD_TC(tp, libbpfjit_cop_invalid_index);
+
+	ATF_TP_ADD_TC(tp, libbpfjit_copx_no_ctx);
+	ATF_TP_ADD_TC(tp, libbpfjit_copx_ret_A);
+	ATF_TP_ADD_TC(tp, libbpfjit_copx_ret_buflen);
+	ATF_TP_ADD_TC(tp, libbpfjit_copx_ret_wirelen);
+	ATF_TP_ADD_TC(tp, libbpfjit_copx_ret_nfuncs);
+	ATF_TP_ADD_TC(tp, libbpfjit_copx_side_effect);
+	ATF_TP_ADD_TC(tp, libbpfjit_copx_cop);
+	ATF_TP_ADD_TC(tp, libbpfjit_copx_invalid_index);
+
+	return atf_no_error();
+}