machine: Mark AEABI functions as weak to avoid conflicting with optimized implementations from agbabi/ndsabi

Author: asiekierka

newlib/libc/machine/arm/aeabi_memset.c

@@ -33,10 +33,10 @@
 /* Support the alias for the __aeabi_memset which may
    assume memory alignment.  */
 void __aeabi_memset4 (void *dest, size_t n, int c)
-	_ATTRIBUTE ((alias ("__aeabi_memset")));
+	_ATTRIBUTE ((alias ("__aeabi_memset"), weak));
 
 void __aeabi_memset8 (void *dest, size_t n, int c)
-	_ATTRIBUTE ((alias ("__aeabi_memset")));
+	_ATTRIBUTE ((alias ("__aeabi_memset"), weak));
 
 /* Support the routine __aeabi_memset.  Can't alias to memset
    because the arguments are in a different order */
@@ -47,7 +47,7 @@ void __aeabi_memset8 (void *dest, size_t n, int c)
 
 #undef memset
 
-void __attribute__((used)) __aeabi_memset (void *dest, size_t n, int c)
+void __attribute__((used, weak)) __aeabi_memset (void *dest, size_t n, int c)
 {
   /*Note that relative to ANSI memset, __aeabi_memset hase the order
     of its second and third arguments reversed.  */

newlib/libc/machine/arm/bzero.c

@@ -32,10 +32,10 @@
    assume memory alignment.  */
 
 void __aeabi_memclr4 (void *dest, size_t n)
-	_ATTRIBUTE ((alias ("bzero")));
+	_ATTRIBUTE ((alias ("bzero"), weak));
 
 void __aeabi_memclr8 (void *dest, size_t n)
-	_ATTRIBUTE ((alias ("bzero")));
+	_ATTRIBUTE ((alias ("bzero"), weak));
 
 void __aeabi_memclr (void *dest, size_t n)
-	_ATTRIBUTE ((alias ("bzero")));
+	_ATTRIBUTE ((alias ("bzero"), weak));

newlib/libc/machine/arm/memcpy.c

@@ -47,12 +47,12 @@
 # include "../../string/memcpy.c"
 
 void *__aeabi_memcpy4 (void *__restrict dest, const void * __restrict source, size_t n)
-	_ATTRIBUTE ((alias ("memcpy")));
+	_ATTRIBUTE ((alias ("memcpy"), weak));
 
 void *__aeabi_memcpy8 (void * __restrict dest, const void * __restrict source, size_t n)
-	_ATTRIBUTE ((alias ("memcpy")));
+	_ATTRIBUTE ((alias ("memcpy"), weak));
 
 void *__aeabi_memcpy (void * __restrict dest, const void * __restrict source, size_t n)
-	_ATTRIBUTE ((alias ("memcpy")));
+	_ATTRIBUTE ((alias ("memcpy"), weak));
 
 #endif

newlib/libc/machine/arm/memmove.c

@@ -38,10 +38,10 @@
 /* Support the alias for the __aeabi_memmove which may
    assume memory alignment.  */
 void *__aeabi_memmove4 (void *__restrict dest, const void *source, size_t n)
-	_ATTRIBUTE ((alias ("memmove")));
+	_ATTRIBUTE ((alias ("memmove"), weak));
 
 void *__aeabi_memmove8 (void *dest, const void *source, size_t n)
-	_ATTRIBUTE ((alias ("memmove")));
+	_ATTRIBUTE ((alias ("memmove"), weak));
 
 void *__aeabi_memmove (void *dest, const void *source, size_t n)
-	_ATTRIBUTE ((alias ("memmove")));
+	_ATTRIBUTE ((alias ("memmove"), weak));