57718be8fa
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
484 lines
11 KiB
C
484 lines
11 KiB
C
/* $NetBSD: t_extmem.c,v 1.3 2014/07/14 19:11:15 alnsn Exp $ */
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/*-
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* Copyright (c) 2014 Alexander Nasonov.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__RCSID("$NetBSD: t_extmem.c,v 1.3 2014/07/14 19:11:15 alnsn Exp $");
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#include <atf-c.h>
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#include <stdint.h>
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#include <string.h>
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#define __BPF_PRIVATE
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#include <net/bpf.h>
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#include <net/bpfjit.h>
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static uint32_t retM(const bpf_ctx_t *bc, bpf_args_t *args, uint32_t A);
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static const bpf_copfunc_t copfuncs[] = {
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&retM
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};
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static const bpf_ctx_t ctx = {
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.copfuncs = copfuncs,
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.nfuncs = sizeof(copfuncs) / sizeof(copfuncs[0]),
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.extwords = 4,
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.preinited = BPF_MEMWORD_INIT(0) | BPF_MEMWORD_INIT(3),
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};
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static uint32_t
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retM(const bpf_ctx_t *bc, bpf_args_t *args, uint32_t A)
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{
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return args->mem[(uintptr_t)args->arg];
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}
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ATF_TC(libbpfjit_extmem_load_default);
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ATF_TC_HEAD(libbpfjit_extmem_load_default, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test that external memory "
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"is zero initialized by default");
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}
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ATF_TC_BODY(libbpfjit_extmem_load_default, tc)
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{
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static struct bpf_insn insns[] = {
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BPF_STMT(BPF_LD+BPF_MEM, 1),
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BPF_STMT(BPF_RET+BPF_A, 0)
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};
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bpfjit_func_t code;
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uint8_t pkt[1] = { 0 };
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uint32_t mem[ctx.extwords];
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/* Pre-inited words. */
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mem[0] = 0;
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mem[3] = 3;
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bpf_args_t args = {
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.pkt = pkt,
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.buflen = sizeof(pkt),
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.wirelen = sizeof(pkt),
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.mem = mem,
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};
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size_t insn_count = sizeof(insns) / sizeof(insns[0]);
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code = bpfjit_generate_code(&ctx, insns, insn_count);
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ATF_REQUIRE(code != NULL);
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ATF_CHECK(code(&ctx, &args) == 0);
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bpfjit_free_code(code);
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}
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ATF_TC(libbpfjit_extmem_load_preinited);
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ATF_TC_HEAD(libbpfjit_extmem_load_preinited, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test a load of external "
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"pre-initialized memory");
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}
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ATF_TC_BODY(libbpfjit_extmem_load_preinited, tc)
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{
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static struct bpf_insn insns[] = {
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BPF_STMT(BPF_LD+BPF_MEM, 3),
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BPF_STMT(BPF_RET+BPF_A, 0)
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};
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bpfjit_func_t code;
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uint8_t pkt[1] = { 0 };
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uint32_t mem[ctx.extwords];
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/* Pre-inited words. */
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mem[0] = 0;
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mem[3] = 3;
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bpf_args_t args = {
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.pkt = pkt,
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.buflen = sizeof(pkt),
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.wirelen = sizeof(pkt),
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.mem = mem,
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};
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size_t insn_count = sizeof(insns) / sizeof(insns[0]);
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code = bpfjit_generate_code(&ctx, insns, insn_count);
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ATF_REQUIRE(code != NULL);
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ATF_CHECK(code(&ctx, &args) == 3);
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bpfjit_free_code(code);
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}
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ATF_TC(libbpfjit_extmem_invalid_load);
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ATF_TC_HEAD(libbpfjit_extmem_invalid_load, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test that out-of-range load "
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"fails validation");
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}
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ATF_TC_BODY(libbpfjit_extmem_invalid_load, tc)
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{
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static struct bpf_insn insns[] = {
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BPF_STMT(BPF_LD+BPF_MEM, 4),
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BPF_STMT(BPF_RET+BPF_A, 0)
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};
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size_t insn_count = sizeof(insns) / sizeof(insns[0]);
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ATF_CHECK(bpfjit_generate_code(&ctx, insns, insn_count) == NULL);
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}
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ATF_TC(libbpfjit_extmem_store);
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ATF_TC_HEAD(libbpfjit_extmem_store, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test stores to external memory");
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}
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ATF_TC_BODY(libbpfjit_extmem_store, tc)
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{
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static struct bpf_insn insns[] = {
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BPF_STMT(BPF_LD+BPF_IMM, 1), /* A <- 1 */
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BPF_STMT(BPF_LDX+BPF_W+BPF_IMM, 2), /* X <- 2 */
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BPF_STMT(BPF_ST, 1), /* M[1] <- A */
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BPF_STMT(BPF_ALU+BPF_ADD+BPF_X, 0), /* A <- A + X */
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BPF_STMT(BPF_STX, 2), /* M[2] <- X */
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BPF_STMT(BPF_ST, 3), /* M[3] <- A */
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BPF_STMT(BPF_RET+BPF_A, 0) /* ret A */
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};
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bpfjit_func_t code;
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uint8_t pkt[1] = { 0 };
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uint32_t mem[ctx.extwords];
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/* Pre-inited words. */
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mem[0] = 0;
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mem[3] = 7;
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mem[1] = mem[2] = 0xdeadbeef;
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bpf_args_t args = {
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.pkt = pkt,
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.buflen = sizeof(pkt),
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.wirelen = sizeof(pkt),
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.mem = mem,
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};
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size_t insn_count = sizeof(insns) / sizeof(insns[0]);
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code = bpfjit_generate_code(&ctx, insns, insn_count);
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ATF_REQUIRE(code != NULL);
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ATF_CHECK(code(&ctx, &args) == 3);
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bpfjit_free_code(code);
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ATF_CHECK(mem[0] == 0);
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ATF_CHECK(mem[1] == 1);
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ATF_CHECK(mem[2] == 2);
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ATF_CHECK(mem[3] == 3);
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}
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ATF_TC(libbpfjit_extmem_side_effect);
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ATF_TC_HEAD(libbpfjit_extmem_side_effect, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test that ABC optimization doesn\'t "
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"skip stores to external memory");
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}
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ATF_TC_BODY(libbpfjit_extmem_side_effect, tc)
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{
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static struct bpf_insn insns[] = {
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BPF_STMT(BPF_LD+BPF_B+BPF_ABS, 0), /* A <- P[0] */
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BPF_STMT(BPF_LDX+BPF_W+BPF_IMM, 2), /* X <- 2 */
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BPF_STMT(BPF_ST, 1), /* M[1] <- A */
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BPF_STMT(BPF_ALU+BPF_ADD+BPF_X, 0), /* A <- A + X */
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BPF_STMT(BPF_STX, 2), /* M[2] <- X */
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BPF_STMT(BPF_ST, 3), /* M[3] <- A */
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BPF_STMT(BPF_LD+BPF_B+BPF_ABS, 99), /* A <- P[99] */
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BPF_STMT(BPF_RET+BPF_A, 0) /* ret A */
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};
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bpfjit_func_t code;
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uint8_t pkt[1] = { 1 };
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uint32_t mem[ctx.extwords];
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/* Pre-inited words. */
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mem[0] = 0;
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mem[3] = 7;
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mem[1] = mem[2] = 0xdeadbeef;
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bpf_args_t args = {
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.pkt = pkt,
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.buflen = sizeof(pkt),
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.wirelen = sizeof(pkt),
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.mem = mem,
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};
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size_t insn_count = sizeof(insns) / sizeof(insns[0]);
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code = bpfjit_generate_code(&ctx, insns, insn_count);
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ATF_REQUIRE(code != NULL);
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ATF_CHECK(code(&ctx, &args) == 0);
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bpfjit_free_code(code);
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ATF_CHECK(mem[0] == 0);
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ATF_CHECK(mem[1] == 1);
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ATF_CHECK(mem[2] == 2);
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ATF_CHECK(mem[3] == 3);
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}
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ATF_TC(libbpfjit_extmem_invalid_store);
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ATF_TC_HEAD(libbpfjit_extmem_invalid_store, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test that out-of-range store "
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"fails validation");
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}
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ATF_TC_BODY(libbpfjit_extmem_invalid_store, tc)
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{
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static struct bpf_insn insns[] = {
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BPF_STMT(BPF_ST, 4),
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BPF_STMT(BPF_RET+BPF_A, 0)
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};
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size_t insn_count = sizeof(insns) / sizeof(insns[0]);
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ATF_CHECK(bpfjit_generate_code(&ctx, insns, insn_count) == NULL);
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}
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ATF_TC(libbpfjit_cop_ret_mem);
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ATF_TC_HEAD(libbpfjit_cop_ret_mem, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test coprocessor function "
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"that returns a content of external memory word");
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}
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ATF_TC_BODY(libbpfjit_cop_ret_mem, tc)
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{
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static struct bpf_insn insns[] = {
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BPF_STMT(BPF_LD+BPF_IMM, 13),
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BPF_STMT(BPF_ST, 2),
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BPF_STMT(BPF_LD+BPF_IMM, 137),
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BPF_STMT(BPF_ST, 1),
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BPF_STMT(BPF_MISC+BPF_COP, 0), // retM
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BPF_STMT(BPF_RET+BPF_A, 0)
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};
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bpfjit_func_t code;
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uint8_t pkt[1] = { 0 };
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uint32_t mem[ctx.extwords];
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void *arg = (void*)(uintptr_t)2;
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/* Pre-inited words. */
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mem[0] = 0;
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mem[3] = 3;
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bpf_args_t args = {
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.pkt = pkt,
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.buflen = sizeof(pkt),
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.wirelen = sizeof(pkt),
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.arg = arg,
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.mem = mem,
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};
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size_t insn_count = sizeof(insns) / sizeof(insns[0]);
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code = bpfjit_generate_code(&ctx, insns, insn_count);
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ATF_REQUIRE(code != NULL);
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ATF_CHECK(code(&ctx, &args) == 13);
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bpfjit_free_code(code);
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}
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ATF_TC(libbpfjit_cop_ret_preinited_mem);
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ATF_TC_HEAD(libbpfjit_cop_ret_preinited_mem, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test coprocessor function that "
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"returns a content of external pre-initialized memory word");
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}
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ATF_TC_BODY(libbpfjit_cop_ret_preinited_mem, tc)
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{
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static struct bpf_insn insns[] = {
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BPF_STMT(BPF_LD+BPF_IMM, 13),
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BPF_STMT(BPF_ST, 2),
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BPF_STMT(BPF_LD+BPF_IMM, 137),
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BPF_STMT(BPF_ST, 1),
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BPF_STMT(BPF_MISC+BPF_COP, 0), // retM
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BPF_STMT(BPF_RET+BPF_A, 0)
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};
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bpfjit_func_t code;
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uint8_t pkt[1] = { 0 };
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uint32_t mem[ctx.extwords];
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void *arg = (void*)(uintptr_t)3;
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/* Pre-inited words. */
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mem[0] = 0;
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mem[3] = 3;
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bpf_args_t args = {
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.pkt = pkt,
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.buflen = sizeof(pkt),
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.wirelen = sizeof(pkt),
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.arg = arg,
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.mem = mem,
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};
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size_t insn_count = sizeof(insns) / sizeof(insns[0]);
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code = bpfjit_generate_code(&ctx, insns, insn_count);
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ATF_REQUIRE(code != NULL);
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ATF_CHECK(code(&ctx, &args) == 3);
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bpfjit_free_code(code);
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}
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ATF_TC(libbpfjit_copx_ret_mem);
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ATF_TC_HEAD(libbpfjit_copx_ret_mem, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test coprocessor function "
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"that returns a content of external memory word");
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}
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ATF_TC_BODY(libbpfjit_copx_ret_mem, tc)
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{
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static struct bpf_insn insns[] = {
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BPF_STMT(BPF_LD+BPF_IMM, 13),
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BPF_STMT(BPF_ST, 2),
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BPF_STMT(BPF_LD+BPF_IMM, 137),
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BPF_STMT(BPF_ST, 1),
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BPF_STMT(BPF_LDX+BPF_IMM, 0), // retM
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BPF_STMT(BPF_MISC+BPF_COPX, 0),
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BPF_STMT(BPF_RET+BPF_A, 0)
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};
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bpfjit_func_t code;
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uint8_t pkt[1] = { 0 };
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uint32_t mem[ctx.extwords];
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void *arg = (void*)(uintptr_t)2;
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/* Pre-inited words. */
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mem[0] = 0;
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mem[3] = 3;
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bpf_args_t args = {
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.pkt = pkt,
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.buflen = sizeof(pkt),
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.wirelen = sizeof(pkt),
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.arg = arg,
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.mem = mem,
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};
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size_t insn_count = sizeof(insns) / sizeof(insns[0]);
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code = bpfjit_generate_code(&ctx, insns, insn_count);
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ATF_REQUIRE(code != NULL);
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ATF_CHECK(code(&ctx, &args) == 13);
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bpfjit_free_code(code);
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}
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ATF_TC(libbpfjit_copx_ret_preinited_mem);
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ATF_TC_HEAD(libbpfjit_copx_ret_preinited_mem, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test coprocessor function that "
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"returns a content of external pre-initialized memory word");
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}
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ATF_TC_BODY(libbpfjit_copx_ret_preinited_mem, tc)
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{
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static struct bpf_insn insns[] = {
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BPF_STMT(BPF_LD+BPF_IMM, 13),
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BPF_STMT(BPF_ST, 2),
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BPF_STMT(BPF_LD+BPF_IMM, 137),
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BPF_STMT(BPF_ST, 1),
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BPF_STMT(BPF_LDX+BPF_IMM, 0), // retM
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BPF_STMT(BPF_MISC+BPF_COPX, 0),
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BPF_STMT(BPF_RET+BPF_A, 0)
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};
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bpfjit_func_t code;
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uint8_t pkt[1] = { 0 };
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uint32_t mem[ctx.extwords];
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void *arg = (void*)(uintptr_t)3;
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/* Pre-inited words. */
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mem[0] = 0;
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mem[3] = 3;
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bpf_args_t args = {
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.pkt = pkt,
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.buflen = sizeof(pkt),
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.wirelen = sizeof(pkt),
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.arg = arg,
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.mem = mem,
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};
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size_t insn_count = sizeof(insns) / sizeof(insns[0]);
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code = bpfjit_generate_code(&ctx, insns, insn_count);
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ATF_REQUIRE(code != NULL);
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ATF_CHECK(code(&ctx, &args) == 3);
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bpfjit_free_code(code);
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}
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ATF_TP_ADD_TCS(tp)
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{
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/*
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* For every new test please also add a similar test
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* to ../../net/bpfjit/t_extmem.c
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*/
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ATF_TP_ADD_TC(tp, libbpfjit_extmem_load_default);
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ATF_TP_ADD_TC(tp, libbpfjit_extmem_load_preinited);
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ATF_TP_ADD_TC(tp, libbpfjit_extmem_invalid_load);
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ATF_TP_ADD_TC(tp, libbpfjit_extmem_store);
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ATF_TP_ADD_TC(tp, libbpfjit_extmem_side_effect);
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ATF_TP_ADD_TC(tp, libbpfjit_extmem_invalid_store);
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ATF_TP_ADD_TC(tp, libbpfjit_cop_ret_mem);
|
|
ATF_TP_ADD_TC(tp, libbpfjit_cop_ret_preinited_mem);
|
|
ATF_TP_ADD_TC(tp, libbpfjit_copx_ret_mem);
|
|
ATF_TP_ADD_TC(tp, libbpfjit_copx_ret_preinited_mem);
|
|
|
|
return atf_no_error();
|
|
}
|