[Xen-devel] [PATCHv2] mini-os: build fixes for lwip 1.3.2

[David Vrabel <david.vrabel@xxxxxxxxxx>]

From: David Vrabel <david.vrabel@xxxxxxxxxx>

Various fixes to mini-os needed to build lwip 1.3.2:

- Don't build the tests.
- Add BSD-style endianness macros to endian.h.
- free() is called via a function pointer so it needs to be a real
  function.  Do the same for malloc() and realloc().

Signed-off-by: David Vrabel <david.vrabel@xxxxxxxxxx>
---
 extras/mini-os/Makefile          |    2 +-
 extras/mini-os/README            |    2 +-
 extras/mini-os/include/endian.h  |    4 ++++
 extras/mini-os/include/xmalloc.h |   10 +++++-----
 extras/mini-os/lib/xmalloc.c     |   12 +++++++++++-
 5 files changed, 22 insertions(+), 8 deletions(-)

diff --git a/extras/mini-os/Makefile b/extras/mini-os/Makefile
index 2302a23..50d038b 100644
--- a/extras/mini-os/Makefile
+++ b/extras/mini-os/Makefile
@@ -136,7 +136,7 @@ arch_lib:
 
 ifeq ($(CONFIG_LWIP),y)
 # lwIP library
-LWC    := $(shell find $(LWIPDIR)/ -type f -name '*.c')
+LWC    := $(shell find $(LWIPDIR)/src -type f -name '*.c')
 LWC    := $(filter-out %6.c %ip6_addr.c %ethernetif.c, $(LWC))
 LWO    := $(patsubst %.c,%.o,$(LWC))
 LWO    += $(OBJ_DIR)/lwip-arch.o
diff --git a/extras/mini-os/README b/extras/mini-os/README
index 41573aa..710a303 100644
--- a/extras/mini-os/README
+++ b/extras/mini-os/README
@@ -19,7 +19,7 @@ This includes:
 
 - to build it just type make.
 
-- to build it with TCP/IP support, download LWIP 1.3 source code and type
+- to build it with TCP/IP support, download LWIP 1.3.2 source code and type
 
   make LWIPDIR=/path/to/lwip/source
 
diff --git a/extras/mini-os/include/endian.h b/extras/mini-os/include/endian.h
index cdf432b..5345517 100644
--- a/extras/mini-os/include/endian.h
+++ b/extras/mini-os/include/endian.h
@@ -12,4 +12,8 @@
 
 #include <arch_wordsize.h>
 
+#define BYTE_ORDER __BYTE_ORDER
+#define BIG_ENDIAN __BIG_ENDIAN
+#define LITTLE_ENDIAN __LITTLE_ENDIAN
+
 #endif /* endian.h */
diff --git a/extras/mini-os/include/xmalloc.h b/extras/mini-os/include/xmalloc.h
index 13b242e..11fb027 100644
--- a/extras/mini-os/include/xmalloc.h
+++ b/extras/mini-os/include/xmalloc.h
@@ -14,16 +14,16 @@
 #include <limits.h>
 
 #define DEFAULT_ALIGN (sizeof(unsigned long))
-#define malloc(size) _xmalloc(size, DEFAULT_ALIGN)
-#define free(ptr) xfree(ptr)
-#define realloc(ptr, size) _realloc(ptr, size)
 
-/* Free any of the above. */
+extern void *malloc(size_t size);
+extern void *realloc(void *ptr, size_t size);
+extern void free(void *ptr);
+
+/* Free memory from any xmalloc*() call. */
 extern void xfree(const void *);
 
 /* Underlying functions */
 extern void *_xmalloc(size_t size, size_t align);
-extern void *_realloc(void *ptr, size_t size);
 
 #endif
 
diff --git a/extras/mini-os/lib/xmalloc.c b/extras/mini-os/lib/xmalloc.c
index 015cd31..23e367d 100644
--- a/extras/mini-os/lib/xmalloc.c
+++ b/extras/mini-os/lib/xmalloc.c
@@ -267,7 +267,12 @@ void xfree(const void *p)
     /* spin_unlock_irqrestore(&freelist_lock, flags); */
 }
 
-void *_realloc(void *ptr, size_t size)
+void *malloc(size_t size)
+{
+    return _xmalloc(size, DEFAULT_ALIGN);
+}
+
+void *realloc(void *ptr, size_t size)
 {
     void *new;
     struct xmalloc_hdr *hdr;
@@ -296,6 +301,11 @@ void *_realloc(void *ptr, size_t size)
 
     return new;
 }
+
+void free(void *ptr)
+{
+    xfree(ptr);
+}
 #endif
 
 /*
-- 
1.7.2.5


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