From: Alexei Starovoitov <ast@xxxxxxxxxx>
Add big endian support for can_loop/cond_break macros.
Acked-by: Yonghong Song <yonghong.song@xxxxxxxxx>
Signed-off-by: Alexei Starovoitov <ast@xxxxxxxxxx>
---
.../testing/selftests/bpf/bpf_experimental.h | 28 +++++++++++++++++++
1 file changed, 28 insertions(+)
diff --git a/tools/testing/selftests/bpf/bpf_experimental.h b/tools/testing/selftests/bpf/bpf_experimental.h
index 3d9e4b8c6b81..82b73c37b50b 100644
--- a/tools/testing/selftests/bpf/bpf_experimental.h
+++ b/tools/testing/selftests/bpf/bpf_experimental.h
@@ -351,6 +351,7 @@ l_true: \
l_continue:; \
})
#else
+#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
#define can_loop \
({ __label__ l_break, l_continue; \
bool ret = true; \
@@ -376,6 +377,33 @@ l_true: \
l_break: break; \
l_continue:; \
})
+#else
+#define can_loop \
+ ({ __label__ l_break, l_continue; \
+ bool ret = true; \
+ asm volatile goto("1:.byte 0xe5; \
+ .byte 0; \
+ .long (((%l[l_break] - 1b - 8) / 8) & 0xffff) << 16; \
+ .short 0" \
+ :::: l_break); \
+ goto l_continue; \
+ l_break: ret = false; \
+ l_continue:; \
+ ret; \
+ })
+
+#define cond_break \
+ ({ __label__ l_break, l_continue; \
+ asm volatile goto("1:.byte 0xe5; \
+ .byte 0; \
+ .long (((%l[l_break] - 1b - 8) / 8) & 0xffff) << 16; \
+ .short 0" \
+ :::: l_break); \
+ goto l_continue; \
+ l_break: break; \
+ l_continue:; \
+ })
+#endif
#endif
#ifndef bpf_nop_mov
--
2.43.0
