From 623038e4df4f09946e6126e5744a3a2e28add28f Mon Sep 17 00:00:00 2001 From: Ian Campbell Date: Fri, 19 Jul 2013 12:51:07 +0100 Subject: xen/compat: support XEN_HAVE_FOO ifdefs in public interface This allows us expose or hide interface features on different architectures without requiring nasty arch-specific ifdeffery. Preserves any #ifdef with a XEN_HAVE_* symbol name, as well as any #else or The ifdef symbol becomes COMPAT_HAVE in the compat versions so that architectures can enable or disable interfaces for compat mode too. (This actually just fell out of the way the existing stuff works and it didn't seem worth jumping through hoops to make the name remain XEN_HAVE). Signed-off-by: Ian Campbell Acked-by: Keir Fraser Acked-by: Ian Jackson --- xen/tools/compat-build-header.py | 3 +++ xen/tools/compat-build-source.py | 3 +++ 2 files changed, 6 insertions(+) (limited to 'xen/tools') diff --git a/xen/tools/compat-build-header.py b/xen/tools/compat-build-header.py index fba2f37861..e29606295e 100755 --- a/xen/tools/compat-build-header.py +++ b/xen/tools/compat-build-header.py @@ -4,6 +4,9 @@ import re,sys pats = [ [ r"__InClUdE__(.*)", r"#include\1\n#pragma pack(4)" ], + [ r"__IfDeF__ (XEN_HAVE.*)", r"#ifdef \1" ], + [ r"__ElSe__", r"#else" ], + [ r"__EnDif__", r"#endif" ], [ r"\"xen-compat.h\"", r"" ], [ r"(struct|union|enum)\s+(xen_?)?(\w)", r"\1 compat_\3" ], [ r"@KeeP@", r"" ], diff --git a/xen/tools/compat-build-source.py b/xen/tools/compat-build-source.py index 3906b71ea0..55206e637a 100755 --- a/xen/tools/compat-build-source.py +++ b/xen/tools/compat-build-source.py @@ -4,6 +4,9 @@ import re,sys pats = [ [ r"^\s*#\s*include\s+", r"__InClUdE__ " ], + [ r"^\s*#\s*ifdef (XEN_HAVE.*)\s+", r"__IfDeF__ \1" ], + [ r"^\s*#\s*else /\* (XEN_HAVE.*) \*/\s+", r"__ElSe__" ], + [ r"^\s*#\s*endif /\* (XEN_HAVE.*) \*/\s+", r"__EnDif__" ], [ r"^\s*#\s*define\s+([A-Z_]*_GUEST_HANDLE)", r"#define HIDE_\1" ], [ r"^\s*#\s*define\s+([a-z_]*_guest_handle)", r"#define hide_\1" ], [ r"XEN_GUEST_HANDLE(_[0-9A-Fa-f]+)?", r"COMPAT_HANDLE" ], -- cgit v1.2.3