From: Eduard Zingerman <eddyz87@gmail.com>
To: bpf@vger.kernel.org, ast@kernel.org
Cc: andrii@kernel.org, daniel@iogearbox.net, kernel-team@fb.com,
yhs@fb.com, Eduard Zingerman <eddyz87@gmail.com>
Subject: [RFC bpf-next 4/5] selftests/bpf: __imm_insn macro to embed raw insns in inline asm
Date: Mon, 23 Jan 2023 16:51:47 +0200 [thread overview]
Message-ID: <20230123145148.2791939-5-eddyz87@gmail.com> (raw)
In-Reply-To: <20230123145148.2791939-1-eddyz87@gmail.com>
A convenience macro to allow the following usage:
#include <linux/filter.h>
...
asm volatile (
...
".8byte %[raw_insn];"
...
:
: __imm_insn(raw_insn, BPF_RAW_INSN(...))
: __clobber_all);
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
---
tools/testing/selftests/bpf/progs/bpf_misc.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/tools/testing/selftests/bpf/progs/bpf_misc.h b/tools/testing/selftests/bpf/progs/bpf_misc.h
index e742a935de98..832bec4818d9 100644
--- a/tools/testing/selftests/bpf/progs/bpf_misc.h
+++ b/tools/testing/selftests/bpf/progs/bpf_misc.h
@@ -61,6 +61,7 @@
#define __clobber_common "r0", "r1", "r2", "r3", "r4", "r5", "memory"
#define __imm(name) [name]"i"(name)
#define __imm_addr(name) [name]"i"(&name)
+#define __imm_insn(name, expr) [name]"i"(*(long *)&(expr))
#if defined(__TARGET_ARCH_x86)
#define SYSCALL_WRAPPER 1
--
2.39.0
next prev parent reply other threads:[~2023-01-23 14:52 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-23 14:51 [RFC bpf-next 0/5] test_verifier tests migration to inline assembly Eduard Zingerman
2023-01-23 14:51 ` [RFC bpf-next 1/5] selftests/bpf: support custom per-test flags and multiple expected messages Eduard Zingerman
2023-02-28 18:53 ` Andrii Nakryiko
2023-02-28 22:30 ` Eduard Zingerman
2023-03-01 17:12 ` Andrii Nakryiko
2023-03-01 17:58 ` Eduard Zingerman
2023-01-23 14:51 ` [RFC bpf-next 2/5] selftests/bpf: unprivileged tests for test_loader.c Eduard Zingerman
2023-01-23 14:51 ` [RFC bpf-next 3/5] selftests/bpf: generate boilerplate code for test_loader-based tests Eduard Zingerman
2023-01-26 1:43 ` Andrii Nakryiko
2023-01-26 23:29 ` Eduard Zingerman
2023-01-23 14:51 ` Eduard Zingerman [this message]
2023-01-26 2:48 ` [RFC bpf-next 4/5] selftests/bpf: __imm_insn macro to embed raw insns in inline asm Andrii Nakryiko
2023-01-23 14:51 ` [RFC bpf-next 5/5] selftests/bpf: convert jeq_infer_not_null tests to inline assembly Eduard Zingerman
2023-01-26 1:33 ` [RFC bpf-next 0/5] test_verifier tests migration " Andrii Nakryiko
2023-01-26 3:25 ` Alexei Starovoitov
2023-01-27 0:43 ` Eduard Zingerman
2023-01-27 0:30 ` Eduard Zingerman
2023-01-27 17:41 ` Andrii Nakryiko
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