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Diffstat (limited to 'libgloss/or1k/sbrk.c')
-rw-r--r--libgloss/or1k/sbrk.c52
1 files changed, 0 insertions, 52 deletions
diff --git a/libgloss/or1k/sbrk.c b/libgloss/or1k/sbrk.c
deleted file mode 100644
index de80663ee..000000000
--- a/libgloss/or1k/sbrk.c
+++ /dev/null
@@ -1,52 +0,0 @@
-/* sbrk.c -- allocate space on heap on OpenRISC 1000.
- *
- * Copyright (c) 2014 Authors
- *
- * Contributor Stefan Wallentowitz <stefan.wallentowitz@tum.de>
- *
- * The authors hereby grant permission to use, copy, modify, distribute,
- * and license this software and its documentation for any purpose, provided
- * that existing copyright notices are retained in all copies and that this
- * notice is included verbatim in any distributions. No written agreement,
- * license, or royalty fee is required for any of the authorized uses.
- * Modifications to this software may be copyrighted by their authors
- * and need not follow the licensing terms described here, provided that
- * the new terms are clearly indicated on the first page of each file where
- * they apply.
- */
-
-#include <reent.h>
-
-#include "include/or1k-support.h"
-
-static uint32_t _or1k_heap_end;
-
-void *
-_sbrk_r (struct _reent * reent, ptrdiff_t incr)
-{
- extern uint32_t end; /* Set by linker. */
- uint32_t prev_heap_end;
-
- // This needs to be atomic
-
- // Disable interrupts on this core
- uint32_t sr_iee = or1k_interrupts_disable();
- uint32_t sr_tee = or1k_timer_disable();
-
- // Initialize heap end to end if not initialized before
- or1k_sync_cas((void*) &_or1k_heap_end, 0, (uint32_t) &end);
-
- do {
- // Read previous heap end
- prev_heap_end = _or1k_heap_end;
- // and try to set it to the new value as long as it has changed
- } while (or1k_sync_cas((void*) &_or1k_heap_end,
- (uint32_t) prev_heap_end,
- (uint32_t) (prev_heap_end + incr)) != (uint32_t) prev_heap_end);
-
- // Restore interrupts on this core
- or1k_timer_restore(sr_tee);
- or1k_interrupts_restore(sr_iee);
-
- return (void*) prev_heap_end;
-}