[RFC bpf-next 4/5] selftests/bpf: __imm_insn macro to embed raw insns in inline asm

[Eduard Zingerman <eddyz87@xxxxxxxxx>]

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@xxxxxxxxx>
---
 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