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Diffstat (limited to 'libc/sysdeps/linux/frv/sbrk.c')
-rw-r--r--libc/sysdeps/linux/frv/sbrk.c25
1 files changed, 25 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/frv/sbrk.c b/libc/sysdeps/linux/frv/sbrk.c
new file mode 100644
index 000000000..c39d60063
--- /dev/null
+++ b/libc/sysdeps/linux/frv/sbrk.c
@@ -0,0 +1,25 @@
+/* From libc-5.3.12 */
+
+#include <errno.h>
+#include <unistd.h>
+#include <sys/syscall.h>
+
+extern void * ___brk_addr;
+
+extern int __init_brk (void);
+extern void *_brk(void *ptr);
+
+void *
+sbrk(intptr_t increment)
+{
+ if (__init_brk () == 0)
+ {
+ char * tmp = (char*)___brk_addr+increment;
+ ___brk_addr = _brk(tmp);
+ if (___brk_addr == tmp)
+ return tmp-increment;
+ __set_errno(ENOMEM);
+ return ((void *) -1);
+ }
+ return ((void *) -1);
+}