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Re: [PATCH 04/14] FreeBSD update of __GNUCLIKE_ASM, etc.
- From: Craig Howland <howland at LGSInnovations dot com>
- To: newlib at sourceware dot org
- Date: Wed, 17 Apr 2013 10:24:31 -0400
- Subject: Re: [PATCH 04/14] FreeBSD update of __GNUCLIKE_ASM, etc.
- References: <1366204592-27532-1-git-send-email-sebastian dot huber at embedded-brains dot de> <1366204592-27532-4-git-send-email-sebastian dot huber at embedded-brains dot de>
On 04/17/2013 09:16 AM, Sebastian Huber wrote:
These defines are used by FreeBSD header and source files.
newlib/ChangeLog
2013-04-17 Sebastian Huber <sebastian.huber@embedded-brains.de>
* libc/include/sys/cdefs.h (__CC_SUPPORTS_DYNAMIC_ARRAY_INIT):
New define.
....
---
newlib/libc/include/sys/cdefs.h | 66 +++++++++++++++++++++++++++++++++++++++
1 files changed, 66 insertions(+), 0 deletions(-)
diff --git a/newlib/libc/include/sys/cdefs.h b/newlib/libc/include/sys/cdefs.h
index fbcd024..b4bc272 100644
--- a/newlib/libc/include/sys/cdefs.h
+++ b/newlib/libc/include/sys/cdefs.h
@@ -106,6 +106,72 @@
#endif
/*
+ * This code has been put in place to help reduce the addition of
+ * compiler specific defines in FreeBSD code. It helps to aid in
+ * having a compiler-agnostic source tree.
+ */
This is a clear delineation of the start of a block for a particular purpose,
but it is not clear when it ends. Should an "end of" marker be added (as an aid
for future maintenance)?
+
+#if defined(__GNUC__) || defined(__INTEL_COMPILER)
+
+#if __GNUC__ >= 3 || defined(__INTEL_COMPILER)
+#define __GNUCLIKE_ASM 3
+#define __GNUCLIKE_MATH_BUILTIN_CONSTANTS
+#else
+#define __GNUCLIKE_ASM 2
+#endif
+#define __GNUCLIKE___TYPEOF 1
+#define __GNUCLIKE___OFFSETOF 1
+#define __GNUCLIKE___SECTION 1
+
+#ifndef __INTEL_COMPILER
+# define __GNUCLIKE_CTOR_SECTION_HANDLING 1
+#endif
+
+#define __GNUCLIKE_BUILTIN_CONSTANT_P 1
+# if defined(__INTEL_COMPILER) && defined(__cplusplus) \
+ && __INTEL_COMPILER < 800
+# undef __GNUCLIKE_BUILTIN_CONSTANT_P
+# endif
+
+#if (__GNUC_MINOR__ > 95 || __GNUC__ >= 3) && !defined(__INTEL_COMPILER)
+# define __GNUCLIKE_BUILTIN_VARARGS 1
+# define __GNUCLIKE_BUILTIN_STDARG 1
+# define __GNUCLIKE_BUILTIN_VAALIST 1
+#endif
+
+#if defined(__GNUC__)
+# define __GNUC_VA_LIST_COMPATIBILITY 1
+#endif
+
+/*
+ * Compiler memory barriers, specific to gcc and clang.
+ */
+#if defined(__GNUC__)
+#define __compiler_membar() __asm __volatile(" " : : : "memory")
+#endif
+
+#ifndef __INTEL_COMPILER
+# define __GNUCLIKE_BUILTIN_NEXT_ARG 1
+# define __GNUCLIKE_MATH_BUILTIN_RELOPS
+#endif
+
+#define __GNUCLIKE_BUILTIN_MEMCPY 1
+
+/* XXX: if __GNUC__ >= 2: not tested everywhere originally, where replaced */
+#define __CC_SUPPORTS_INLINE 1
+#define __CC_SUPPORTS___INLINE 1
+#define __CC_SUPPORTS___INLINE__ 1
+
+#define __CC_SUPPORTS___FUNC__ 1
+#define __CC_SUPPORTS_WARNING 1
+
+#define __CC_SUPPORTS_VARADIC_XXX 1 /* see varargs.h */
+
+#define __CC_SUPPORTS_DYNAMIC_ARRAY_INIT 1
+
+#endif /* __GNUC__ || __INTEL_COMPILER */
+
+/*
Add something like "/* End of code to help reduce the addition of compiler
specific defines in FreeBSD code. */" here?
* Given the pointer x to the member m of the struct s, return
* a pointer to the containing structure. When using GCC, we first
* assign pointer x to a local variable, to check that its type is