From 045e4d2e0829b6c07ef10171bf5d00ab85cbb497 Mon Sep 17 00:00:00 2001
From: Anthony Green <green@moxielogic.com>
Date: Fri, 6 Jun 2003 16:07:57 +0000
Subject: iq2000 port.

---
 libgloss/iq2000/sbrk.c | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)
 create mode 100644 libgloss/iq2000/sbrk.c

(limited to 'libgloss/iq2000/sbrk.c')

diff --git a/libgloss/iq2000/sbrk.c b/libgloss/iq2000/sbrk.c
new file mode 100644
index 000000000..6dfd93b02
--- /dev/null
+++ b/libgloss/iq2000/sbrk.c
@@ -0,0 +1,30 @@
+#include <_ansi.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include "trap.h"
+
+
+caddr_t
+_sbrk (size_t incr)
+{
+  extern char __stack;       /* Defined by the linker */
+  extern char _end;		/* Defined by the linker */
+  static char *heap_end;
+  char *prev_heap_end;
+  char *sp = (char *)&sp;
+
+  if (heap_end == 0)
+    {
+      heap_end = &_end;
+    }
+  prev_heap_end = heap_end;
+  heap_end += incr;
+  if (heap_end > sp)
+    {
+      _write (1, "Heap and stack collision\n", 25);
+      errno = ENOMEM;
+      return (caddr_t)-1;
+    }
+  return (caddr_t) prev_heap_end;
+}
-- 
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