Use __heap_start in picosbrk instead of __end

This lets applications place the heap anywhere they like in memory, instead of insisting that it follow bss. Signed-off-by: Keith Packard <[email protected]>
mp-17 · Apr 22, 2020 · 79ccb2c · 79ccb2c
1 parent 80c81ff
commit 79ccb2c
Showing 1 changed file with 2 additions and 5 deletions.
diff --git a/newlib/libc/picolib/picosbrk.c b/newlib/libc/picolib/picosbrk.c
@@ -35,13 +35,10 @@
 
 #include <unistd.h>
 
-extern char __end[];
+extern char __heap_start[];
 extern char __heap_end[];
-extern char __heap_size[];
 
-static char *brk = __end;
-
-#define heap_size ((uintptr_t)__heap_size)
+static char *brk = __heap_start;
 
 void *sbrk(ptrdiff_t incr)
 {