MilkV-Duo/buildroot-2021.05/boot/lpc32xxcdl/lpc32xxcdl-2.11-libnosys_gnu.patch

Fix compilation and eabi issues

Since we are not linking with libc anymore, we need to define our own memset,
strlen and memcpy. Also, as we are using a *libc compiler, we need to "handle"
exceptions (mostly division by 0) by defining raise() and
__aeabi_unwind_cpp_pr0.

Signed-off-by: Alexandre Belloni <abelloni@adeneo-embedded.com>
---
 csps/lpc32xx/bsps/ea3250/source/libnosys_gnu.c  |   41 +++++++++++++++++++++++
 csps/lpc32xx/bsps/fdi3250/source/libnosys_gnu.c |   41 +++++++++++++++++++++++
 csps/lpc32xx/bsps/phy3250/source/libnosys_gnu.c |   41 +++++++++++++++++++++++
 3 files changed, 123 insertions(+), 0 deletions(-)

diff --git a/csps/lpc32xx/bsps/ea3250/source/libnosys_gnu.c b/csps/lpc32xx/bsps/ea3250/source/libnosys_gnu.c
index 385b0ab..f1f0a0a 100644
--- a/csps/lpc32xx/bsps/ea3250/source/libnosys_gnu.c
+++ b/csps/lpc32xx/bsps/ea3250/source/libnosys_gnu.c
@@ -25,6 +25,7 @@
 #include <errno.h>
 #include <sys/times.h>
 #include <sys/stat.h>
+#include <sys/types.h>
 
 /* errno definition */
 #undef errno
@@ -125,4 +126,44 @@ int _write(int file, char *ptr, int len){
     return 0;
 }
 
+void * memset(void * s,int c,size_t count)
+{
+        char *xs = (char *) s;
+
+        while (count--)
+                *xs++ = c;
+
+        return s;
+}
+
+
+size_t strlen(const char * s)
+{
+        const char *sc;
+
+        for (sc = s; *sc != '\0'; ++sc)
+                /* nothing */;
+        return sc - s;
+}
+
+void * memcpy(void * dest,const void *src,size_t count)
+{
+        char *tmp = (char *) dest, *s = (char *) src;
+
+        while (count--)
+                *tmp++ = *s++;
+
+        return dest;
+}
+
+
+/* Dummy functions to avoid linker complaints */
+void __aeabi_unwind_cpp_pr0(void)
+{
+};
+
+void raise(void)
+{
+};
+
 #endif /*__GNUC__*/
diff --git a/csps/lpc32xx/bsps/fdi3250/source/libnosys_gnu.c b/csps/lpc32xx/bsps/fdi3250/source/libnosys_gnu.c
index 385b0ab..f1f0a0a 100644
--- a/csps/lpc32xx/bsps/fdi3250/source/libnosys_gnu.c
+++ b/csps/lpc32xx/bsps/fdi3250/source/libnosys_gnu.c
@@ -25,6 +25,7 @@
 #include <errno.h>
 #include <sys/times.h>
 #include <sys/stat.h>
+#include <sys/types.h>
 
 /* errno definition */
 #undef errno
@@ -125,4 +126,44 @@ int _write(int file, char *ptr, int len){
     return 0;
 }
 
+void * memset(void * s,int c,size_t count)
+{
+        char *xs = (char *) s;
+
+        while (count--)
+                *xs++ = c;
+
+        return s;
+}
+
+
+size_t strlen(const char * s)
+{
+        const char *sc;
+
+        for (sc = s; *sc != '\0'; ++sc)
+                /* nothing */;
+        return sc - s;
+}
+
+void * memcpy(void * dest,const void *src,size_t count)
+{
+        char *tmp = (char *) dest, *s = (char *) src;
+
+        while (count--)
+                *tmp++ = *s++;
+
+        return dest;
+}
+
+
+/* Dummy functions to avoid linker complaints */
+void __aeabi_unwind_cpp_pr0(void)
+{
+};
+
+void raise(void)
+{
+};
+
 #endif /*__GNUC__*/
diff --git a/csps/lpc32xx/bsps/phy3250/source/libnosys_gnu.c b/csps/lpc32xx/bsps/phy3250/source/libnosys_gnu.c
index cfdb674..6b50c60 100644
--- a/csps/lpc32xx/bsps/phy3250/source/libnosys_gnu.c
+++ b/csps/lpc32xx/bsps/phy3250/source/libnosys_gnu.c
@@ -25,6 +25,7 @@
 #include <errno.h>
 #include <sys/times.h>
 #include <sys/stat.h>
+#include <sys/types.h>
 
 /* errno definition */
 #undef errno
@@ -125,4 +126,44 @@ int _write(int file, char *ptr, int len){
     return 0;
 }
 
+void * memset(void * s,int c,size_t count)
+{
+        char *xs = (char *) s;
+
+        while (count--)
+                *xs++ = c;
+
+        return s;
+}
+
+
+size_t strlen(const char * s)
+{
+        const char *sc;
+
+        for (sc = s; *sc != '\0'; ++sc)
+                /* nothing */;
+        return sc - s;
+}
+
+void * memcpy(void * dest,const void *src,size_t count)
+{
+        char *tmp = (char *) dest, *s = (char *) src;
+
+        while (count--)
+                *tmp++ = *s++;
+
+        return dest;
+}
+
+
+/* Dummy functions to avoid linker complaints */
+void __aeabi_unwind_cpp_pr0(void)
+{
+};
+
+void raise(void)
+{
+};
+
 #endif /*__GNUC__*/
-- 
1.7.7.3