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[PULL,v2,8/9] qemu/compiler: Define QEMU_ARTIFICIAL

Message ID 1412017318-4331-9-git-send-email-rth@twiddle.net
State New
Headers show

Commit Message

Richard Henderson Sept. 29, 2014, 7:01 p.m. UTC 
The combination of always_inline + artificial allows tiny inline
functions to be written that do not interfere with debugging.
In particular, gdb will not step into an artificial function.

The always_inline attribute was introduced in gcc 4.2,
and the artificial attribute was introduced in gcc 4.3.

Signed-off-by: Richard Henderson <rth@twiddle.net>
---
 include/qemu/compiler.h | 6 ++++++
 1 file changed, 6 insertions(+)
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Patch

diff --git a/include/qemu/compiler.h b/include/qemu/compiler.h
index 155b358..ac7c4c4 100644
--- a/include/qemu/compiler.h
+++ b/include/qemu/compiler.h
@@ -24,6 +24,12 @@ 
 #define QEMU_WARN_UNUSED_RESULT
 #endif
 
+#if QEMU_GNUC_PREREQ(4, 3)
+#define QEMU_ARTIFICIAL __attribute__((always_inline, artificial))
+#else
+#define QEMU_ARTIFICIAL
+#endif
+
 #if defined(_WIN32)
 # define QEMU_PACKED __attribute__((gcc_struct, packed))
 #else