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 /* SPDX-License-Identifier: BSD-2-Clause */
 
 /*
  *  COPYRIGHT (c) 1989-2011.
  *  On-Line Applications Research Corporation (OAR).
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  * POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif
 
 #include <tmacros.h>
 #include "test_support.h"
 #include <rtems/libcsupport.h>
 #include <rtems/malloc.h>
 #include <errno.h>
 
 const char rtems_test_name[] = "MALLOC 4";
 
 /* configuration information */
 /* At top of file to have access to configuration variables */
 
 #define CONFIGURE_APPLICATION_NEEDS_SIMPLE_CONSOLE_DRIVER
 #define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER
 
 #define CONFIGURE_MAXIMUM_TASKS             1
 #define CONFIGURE_INITIAL_EXTENSIONS RTEMS_TEST_INITIAL_EXTENSION
 
 #define CONFIGURE_RTEMS_INIT_TASKS_TABLE
 
 #define CONFIGURE_INIT
 #include <rtems/confdefs.h>
 /* end of configuration */
 
 #ifndef CONFIGURE_MALLOC_BSP_SUPPORTS_SBRK
 void *rtems_heap_null_extend(
   Heap_Control *heap,
   size_t alloc_size
 )
 {
   return rtems_heap_extend_via_sbrk( heap, alloc_size );
 }
 #endif
 
 char Malloc_Heap[ 1024 ] CPU_STRUCTURE_ALIGNMENT;
 
 /*
  * Use volatile to prevent compiler optimizations due to the malloc() builtin.
  */
 volatile int sbrk_count;
 
 Heap_Control TempHeap;
 
 size_t offset;
 
 void * sbrk(ptrdiff_t incr)
 {
   void *p = (void *) -1;
 
   printf( "sbrk(%td)\n", incr );
   if ( sbrk_count == -1 ) {
     p = (void *) -2;
     sbrk_count = 0;
   } else if ( offset + incr <= sizeof(Malloc_Heap) ) {
     p = &Malloc_Heap[ offset ];
     offset += incr;
   }
 
   ++sbrk_count;
 
   return p;
 }
 
 rtems_task Init(
   rtems_task_argument argument
 )
 {
   Heap_Control *real_heap;
   const Memory_Information *mem;
   Memory_Area *area;
   size_t i;
 
   void *p;
 
   TEST_BEGIN();
 
   mem = _Memory_Get();
 
   for ( i = 0; i < _Memory_Get_count( mem ); ++i ) {
     area = _Memory_Get_area( mem, i );
     _Memory_Initialize( area, NULL, NULL );
   }
 
   area = _Memory_Get_area( mem, 0 );
 
   /* Safe information on real heap */
   real_heap = malloc_get_heap_pointer();
   malloc_set_heap_pointer( &TempHeap );
 
   rtems_heap_set_sbrk_amount( 0 );
 
   puts( "No sbrk() amount" );
 
   sbrk_count = 0;
   offset     = 256;
   _Memory_Initialize_by_size( area, &Malloc_Heap[ 0 ], offset );
   _Malloc_Initialize();
 
   errno = 0;
   p = malloc( 256 );
   rtems_test_assert( p == NULL );
   rtems_test_assert( errno == ENOMEM );
   rtems_test_assert( sbrk_count == 0 );
 
   rtems_heap_set_sbrk_amount( 256 );
 
   puts( "Misaligned extend" );
 
   sbrk_count = 0;
   offset     = 256;
   _Memory_Initialize_by_size( area, &Malloc_Heap[ 0 ], offset );
   _Malloc_Initialize();
 
   p = malloc(1);
   rtems_test_assert( p != NULL );
   rtems_test_assert( sbrk_count == 0 );
 
   p = malloc(257);
   rtems_test_assert( p != NULL );
   rtems_test_assert( sbrk_count == 1 );
 
   puts( "Not enough sbrk() space" );
 
   sbrk_count = 0;
   offset     = 256;
   _Memory_Initialize_by_size( area, &Malloc_Heap[ 0 ], offset );
   _Malloc_Initialize();
 
   errno = 0;
   p = malloc( sizeof( Malloc_Heap ) );
   rtems_test_assert( p == NULL );
   rtems_test_assert( errno == ENOMEM );
   rtems_test_assert( sbrk_count == 1 );
 
   puts( "Valid heap extend" );
 
   sbrk_count = 0;
   offset     = 256;
   _Memory_Initialize_by_size( area, &Malloc_Heap[ 0 ], offset );
   _Malloc_Initialize();
 
   p = malloc( 128 );
   rtems_test_assert( p != NULL );
   rtems_test_assert( sbrk_count == 0 );
 
   p = malloc( 128 );
   rtems_test_assert( p != NULL );
   rtems_test_assert( sbrk_count == 1 );
 
   puts( "Invalid heap extend" );
 
   sbrk_count = -1;
   offset     = 256;
   _Memory_Initialize_by_size( area, &Malloc_Heap[ 0 ], offset );
   _Malloc_Initialize();
 
   errno = 0;
   p = malloc( 256 );
   rtems_test_assert( p == NULL );
   rtems_test_assert( errno == ENOMEM );
   rtems_test_assert( sbrk_count == 2 );
 
   /* Restore information on real heap */
   malloc_set_heap_pointer( real_heap );
 
   TEST_END();
 
   rtems_test_exit(0);
 }
 
 /* end of file */

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