New patch to review for coreboot: 16ab22d libpayload: Don't sneak in compiler includes

[Stefan Reinauer]

Stefan Reinauer ([e-mail]) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/3058

-gerrit

commit 16ab22dccc3907c7b98544c258cd5d78089a6336
Author: Stefan Reinauer 
Date:   Mon Apr 8 16:55:47 2013 -0700

libpayload: Don't sneak in compiler includes

The way we got to include the compiler includes was kind of whacky.
    Instead of mixing in potentially problematic headers, make libpayload
    self-contained by adding some missing header files. Also clean up
    conflicting definitions of size_t throughout the tree.

Signed-off-by: Stefan Reinauer 
    BUG=none
    TEST=emerge-link libpayload depthcharge works fine
    BRANCH=none

Change-Id: I0ad1194de1a00b7133c5477c00eb167d63a2ee85
    Reviewed-on: https://gerrit.chromium.org/gerrit/47608
    Reviewed-by: Ronald G. Minnich 
    Commit-Queue: Stefan Reinauer 
    Tested-by: Stefan Reinauer 
---
 payloads/libpayload/Makefile.inc               |  4 +---
 payloads/libpayload/include/armv7/arch/types.h |  3 ---
 payloads/libpayload/include/stdarg.h           | 13 +++++++++++++
 payloads/libpayload/include/stddef.h           | 11 +++++++++++
 payloads/libpayload/include/unistd.h           |  2 --
 payloads/libpayload/include/x86/arch/types.h   |  3 ---
 6 files changed, 25 insertions(+), 11 deletions(-)

diff --git a/payloads/libpayload/Makefile.inc b/payloads/libpayload/Makefile.inc
index 9e6dc75..7f8889e 100644
--- a/payloads/libpayload/Makefile.inc
+++ b/payloads/libpayload/Makefile.inc
@@ -53,9 +53,7 @@ subdirs-$(CONFIG_CURSES) += curses
 subdirs-$(CONFIG_CBFS) += libcbfs
 subdirs-$(CONFIG_LZMA) += liblzma

-CC_INCLUDE = $(shell $(CC) -print-search-dirs | head -n 1 | cut -d' ' -f2)include
-
-INCLUDES := -Iinclude -Iinclude/$(ARCHDIR-y) -I$(obj) -I$(CC_INCLUDE)
+INCLUDES := -Iinclude -Iinclude/$(ARCHDIR-y) -I$(obj)
 CFLAGS =  $(EXTRA_CFLAGS) $(INCLUDES) -Os -pipe -nostdinc
 CFLAGS += -nostdlib -Wall -Wundef -Wstrict-prototypes -Wmissing-prototypes
 CFLAGS += -Wwrite-strings -Wredundant-decls -Wno-trigraphs
diff --git a/payloads/libpayload/include/armv7/arch/types.h b/payloads/libpayload/include/armv7/arch/types.h
index bb40257..1bd815b 100644
--- a/payloads/libpayload/include/armv7/arch/types.h
+++ b/payloads/libpayload/include/armv7/arch/types.h
@@ -53,9 +53,6 @@ typedef signed long long s64;
 typedef long time_t;
 typedef long suseconds_t;

-typedef unsigned long size_t;
-typedef long ssize_t;
-
 #ifndef NULL
 #define NULL ((void *)0)
 #endif
diff --git a/payloads/libpayload/include/stdarg.h b/payloads/libpayload/include/stdarg.h
index 077645f..1d7ac05 100644
--- a/payloads/libpayload/include/stdarg.h
+++ b/payloads/libpayload/include/stdarg.h
@@ -31,7 +31,20 @@
 #define _LIBPAYLOAD_STDARG_H

#include <stddef.h>
+
+/* With GCC we use -nostdinc -ffreestanding to keep out system includes.
+ * Unfortunately this also gets us rid of the _compiler_ includes, like
+ * stdarg.h. To work around the issue, we define varargs directly here.
+ * On LLVM we can still just include stdarg.h.
+ */
+#ifdef __GNUC__
+#define va_start(v,l)		__builtin_va_start(v,l)
+#define va_end(v)		__builtin_va_end(v)
+#define va_arg(v,l)		__builtin_va_arg(v,l)
+typedef __builtin_va_list	va_list;
+#else
 #include_next <stdarg.h>
+#endif

/**
  * @defgroup vprintf Varargs print functions
diff --git a/payloads/libpayload/include/stddef.h b/payloads/libpayload/include/stddef.h
new file mode 100644
index 0000000..91ae782
--- /dev/null
+++ b/payloads/libpayload/include/stddef.h
@@ -0,0 +1,11 @@
+
+#include <arch/types.h>
+
+#ifndef __SIZE_TYPE__
+#define __SIZE_TYPE__ unsigned long
+#endif
+typedef __SIZE_TYPE__ size_t;
+typedef long ssize_t;
+
+#define offsetof(TYPE, MEMBER)	((size_t) &((TYPE *) 0)->MEMBER)
+
diff --git a/payloads/libpayload/include/unistd.h b/payloads/libpayload/include/unistd.h
index 1e39aeb..6b4dcf4 100644
--- a/payloads/libpayload/include/unistd.h
+++ b/payloads/libpayload/include/unistd.h
@@ -32,8 +32,6 @@

#include <stddef.h>

-typedef ptrdiff_t ssize_t;
-
 int getpagesize(void);

#endif
diff --git a/payloads/libpayload/include/x86/arch/types.h b/payloads/libpayload/include/x86/arch/types.h
index bb40257..1bd815b 100644
--- a/payloads/libpayload/include/x86/arch/types.h
+++ b/payloads/libpayload/include/x86/arch/types.h
@@ -53,9 +53,6 @@ typedef signed long long s64;
 typedef long time_t;
 typedef long suseconds_t;

-typedef unsigned long size_t;
-typedef long ssize_t;
-
 #ifndef NULL
 #define NULL ((void *)0)
 #endif