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Diffstat (limited to 'libgloss/crx/sbrk.c')
-rw-r--r--libgloss/crx/sbrk.c56
1 files changed, 0 insertions, 56 deletions
diff --git a/libgloss/crx/sbrk.c b/libgloss/crx/sbrk.c
deleted file mode 100644
index 70d5d4f7d..000000000
--- a/libgloss/crx/sbrk.c
+++ /dev/null
@@ -1,56 +0,0 @@
-/* sbrk.c -- Implementation of the low-level sbrk() routine
- *
- * Copyright (c) 2004 National Semiconductor Corporation
- *
- * 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 <errno.h>
-#include <stddef.h> /* where ptrdiff_t is defined */
-#include <stdlib.h>
-
-/* Extend heap space by size bytes.
- Return start of new space allocated, or -1 for errors
- Error cases:
- 1. Allocation is not within heap range */
-
-void * sbrk (ptrdiff_t size)
-{
- /*
- * The following two memory locations should be defined in the linker script file
- */
- extern const char _HEAP_START; /* start of heap */
- extern const char _HEAP_MAX; /* end of heap (maximum value of heap_ptr) */
-
- static const char * heap_ptr; /* pointer to head of heap */
- const char * old_heap_ptr;
- static unsigned char init_sbrk = 0;
-
- /* heap_ptr is initialized to HEAP_START */
- if (init_sbrk == 0)
- {
- heap_ptr = &_HEAP_START;
- init_sbrk = 1;
- }
-
- old_heap_ptr = heap_ptr;
-
- if ((heap_ptr + size) > &_HEAP_MAX)
- {
- /* top of heap is bigger than _HEAP_MAX */
- errno = ENOMEM;
- return (void *) -1;
- }
-
- /* success: update heap_ptr and return previous value */
- heap_ptr += size;
- return (void *)old_heap_ptr;
-}