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-rw-r--r--cpukit/libcsupport/src/malloc_sbrk_helpers.c108
1 files changed, 0 insertions, 108 deletions
diff --git a/cpukit/libcsupport/src/malloc_sbrk_helpers.c b/cpukit/libcsupport/src/malloc_sbrk_helpers.c
deleted file mode 100644
index 64572a154e..0000000000
--- a/cpukit/libcsupport/src/malloc_sbrk_helpers.c
+++ /dev/null
@@ -1,108 +0,0 @@
-/*
- * RTEMS Malloc -- SBRK Support Plugin
- *
- * COPYRIGHT (c) 1989-2007.
- * On-Line Applications Research Corporation (OAR).
- *
- * The license and distribution terms for this file may be
- * found in the file LICENSE in this distribution or at
- * http://www.rtems.com/license/LICENSE.
- */
-
-#if HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <unistd.h> /* sbrk */
-
-#include <rtems.h>
-#include <rtems/malloc.h>
-#include "malloc_p.h"
-
-#include <errno.h>
-
-size_t RTEMS_Malloc_Sbrk_amount;
-
-static void *malloc_sbrk_initialize(
- void *starting_address,
- size_t length
-)
-{
- uintptr_t old_address;
- uintptr_t uaddress;
-
- RTEMS_Malloc_Sbrk_amount = length;
-
- /*
- * If the starting address is 0 then we are to attempt to
- * get length worth of memory using sbrk. Make sure we
- * align the address that we get back.
- */
-
- if (!starting_address) {
- uaddress = (uintptr_t)sbrk(length);
-
- if (uaddress == (uintptr_t) -1) {
- rtems_fatal_error_occurred( RTEMS_NO_MEMORY );
- /* DOES NOT RETURN!!! */
- }
-
- if (uaddress & (CPU_HEAP_ALIGNMENT-1)) {
- old_address = uaddress;
- uaddress = (uaddress + CPU_HEAP_ALIGNMENT) & ~(CPU_HEAP_ALIGNMENT-1);
-
- /*
- * adjust the length by whatever we aligned by
- */
- length -= uaddress - old_address;
- }
-
- starting_address = (void *)uaddress;
- }
- return starting_address;
-}
-
-static void *malloc_sbrk_extend_and_allocate(
- size_t size
-)
-{
- uint32_t sbrk_amount;
- void *starting_address;
- uint32_t the_size;
- void *return_this;
-
- /*
- * Round to the "requested sbrk amount" so hopefully we won't have
- * to grow again for a while. This effectively does sbrk() calls
- * in "page" amounts.
- */
-
- sbrk_amount = RTEMS_Malloc_Sbrk_amount;
-
- if ( sbrk_amount == 0 )
- return (void *) 0;
-
- the_size = ((size + sbrk_amount) / sbrk_amount * sbrk_amount);
-
- starting_address = (void *) sbrk(the_size);
- if ( starting_address == (void*) -1 )
- return (void *) 0;
-
- if ( !_Protected_heap_Extend(
- RTEMS_Malloc_Heap, starting_address, the_size) ) {
- sbrk(-the_size);
- errno = ENOMEM;
- return (void *) 0;
- }
-
- MSBUMP(space_available, the_size);
-
- return_this = _Protected_heap_Allocate( RTEMS_Malloc_Heap, size );
- return return_this;
-}
-
-
-rtems_malloc_sbrk_functions_t rtems_malloc_sbrk_helpers_table = {
- malloc_sbrk_initialize,
- malloc_sbrk_extend_and_allocate
-};