From 608f796648e8de74f9aac3e60db3f7d87e69e9f4 Mon Sep 17 00:00:00 2001
From: "Nicolas \"Pixel\" Noble" <pixel@nobis-crew.org>
Date: Fri, 28 Jan 2011 03:58:51 +0100
Subject: Work on the MPU port. The exception VTOR redirection doesn't work as
 expected.

---
 os/src/init.c    | 37 +++++++++++++------------------------
 os/src/osdebug.c | 10 +++-------
 os/src/sbrk.c    |  5 +++--
 3 files changed, 19 insertions(+), 33 deletions(-)

(limited to 'os')

diff --git a/os/src/init.c b/os/src/init.c
index 4febb10..bb3a6fb 100644
--- a/os/src/init.c
+++ b/os/src/init.c
@@ -1,40 +1,29 @@
 #include <stdlib.h>
 #include <BoardConsole.h>
 
-extern void __libc_init_array() __attribute__((weak));
-extern void __libc_fini_array() __attribute__((weak));
-extern void __main() __attribute__ ((weak));
+extern void __libc_init_array();
+extern void __libc_fini_array();
+extern void __main();
 extern int main(int, char **, char **);
-extern void BoardEarlyInit() __attribute__((weak));
-extern void BoardLateInit() __attribute__((weak));
-extern void BoardExceptionHandler(int) __attribute__((weak));
-extern void BoardShutdown() __attribute__((weak));
+extern void BoardEarlyInit();
+extern void BoardLateInit();
+extern void BoardExceptionHandler(int);
+extern void BoardShutdown();
 
 void _exit(int return_code) __attribute__((noreturn));
 void _exit(int return_code) {
-    if (return_code && BoardExceptionHandler)
+    if (return_code)
         BoardExceptionHandler(return_code);
-    if (BoardShutdown)
-        BoardShutdown();
+    BoardShutdown();
     while(1);
 }
 
 void _start() {
-    if (BoardEarlyInit)
-        BoardEarlyInit();
+    BoardEarlyInit();
     BoardConsoleInit();
     BoardConsolePuts("uC-sdk - booting.");    
-    if (__libc_init_array)
-        __libc_init_array();
-    
-    if (__main)
-        __main();
-    
-    if (BoardLateInit)
-        BoardLateInit();
-
-    if (__libc_fini_array)
-        atexit(__libc_fini_array);
-    
+    __libc_init_array();
+    BoardLateInit();
+    atexit(__libc_fini_array);
     exit(main(0, NULL, NULL));
 }
diff --git a/os/src/osdebug.c b/os/src/osdebug.c
index 6abde30..ca1f359 100644
--- a/os/src/osdebug.c
+++ b/os/src/osdebug.c
@@ -82,13 +82,9 @@ void osDbgPrintf(const char * str, ...) {
             break;
         case 'p':
             arg_p = va_arg(ap, uintptr_t);
-            if (arg_p) {
-                dbgput("0x", 2);
-                for (i = sizeof(arg_p) * 2 - 1; i >= 0; i--) {
-                    dbgput(&hex_conv[(arg_p >> (i << 2)) & 15], 1);
-                }
-            } else {
-                dbgput("(nil)", 5);
+            dbgput("0x", 2);
+            for (i = sizeof(arg_p) * 2 - 1; i >= 0; i--) {
+                dbgput(&hex_conv[(arg_p >> (i << 2)) & 15], 1);
             }
             break;
         case 'x':
diff --git a/os/src/sbrk.c b/os/src/sbrk.c
index 4085970..bff44a2 100644
--- a/os/src/sbrk.c
+++ b/os/src/sbrk.c
@@ -11,14 +11,15 @@
 // Mostly stolen from mbed-freertos
 
 extern uintptr_t __heap_start, __heap_end;
-extern uintptr_t __stack_start __attribute__((weak));
+//extern uintptr_t __stack_start;
 
 /* Low-level bulk RAM allocator -- used by Newlib's Malloc */
 static void *heap_end = NULL;
 PRIVILEGED_FUNCTION void *_sbrk_r(struct _reent *ptr, ptrdiff_t incr)
 {
     void *prev_heap_end, *next_heap_end, *ret;
-    void *stack_min = (void *)(__stack_start ? __stack_start : __heap_end);
+//    void *stack_min = (void *)(__stack_start ? __stack_start : __heap_end);
+    void *stack_min = (void *)__heap_end;
     
     DBGOUT("_sbrk_r(%p, %u)\r\n", ptr, incr);
 
-- 
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