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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/lib/stdlib.C $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2010,2014 */
/* [+] International Business Machines Corp. */
/* */
/* */
/* Licensed under the Apache License, Version 2.0 (the "License"); */
/* you may not use this file except in compliance with the License. */
/* You may obtain a copy of the License at */
/* */
/* http://www.apache.org/licenses/LICENSE-2.0 */
/* */
/* Unless required by applicable law or agreed to in writing, software */
/* distributed under the License is distributed on an "AS IS" BASIS, */
/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or */
/* implied. See the License for the specific language governing */
/* permissions and limitations under the License. */
/* */
/* IBM_PROLOG_END_TAG */
#include <limits.h>
#include <stdlib.h>
#include <string.h>
#include <kernel/heapmgr.H>
#include <kernel/pagemgr.H>
#include <kernel/console.H>
#ifdef HOSTBOOT_MEMORY_LEAKS
#include <arch/ppc.H>
/** Memory allocation function type
*
* These are used as parameters to the magic instruction so that the debug
* tools can determine what memory allocation function was being called.
*/
enum MemoryLeak_FunctionType
{
MEMORYLEAK_MALLOC = 0,
MEMORYLEAK_REALLOC = 1,
MEMORYLEAK_FREE = 2
};
/** @fn memoryleak_magic_instruction
* @brief Triggers the simics memoryleak analysis magic hap-handler.
*
* Arranges the memory allocation parameters into registers according to the
* Power ABI and triggers the magic instruction. The ABI puts parameter 0-3
* into registers r3-r6.
*
* Function attribute of "noinline" is required to ensure that the compiler
* treats this as a real function instead of attempting to inline it. If it
* were to inline it then the parameters wouldn't end up in the right register.
*/
static void memoryleak_magic_instruction(MemoryLeak_FunctionType func,
size_t size,
void* ptr,
void* ptr2) __attribute__((noinline));
static void memoryleak_magic_instruction(MemoryLeak_FunctionType func,
size_t size,
void* ptr,
void* ptr2)
{
// Newer GCC seems to optimize out the parameter placement unless we
// fake them going into an assembly instruction.
asm volatile("" :: "r"(func), "r"(size), "r"(ptr), "r"(ptr2));
MAGIC_INSTRUCTION(MAGIC_MEMORYLEAK_FUNCTION);
return;
}
#endif
#ifdef MEM_ALLOC_PROFILE
// alloc profile
uint16_t g_0 = 0;
uint16_t g_8 = 0;
uint16_t g_16 = 0;
uint16_t g_32 = 0;
uint16_t g_64 = 0;
uint16_t g_128 = 0;
uint16_t g_256 = 0;
uint16_t g_512 = 0;
uint16_t g_1k = 0;
uint16_t g_2k = 0;
uint16_t g_big = 0;
#endif
void* malloc(size_t s)
{
#ifdef MEM_ALLOC_PROFILE
if(s == 0) ++g_0;
else if (s <= 8) ++g_8;
else if (s <= 16) ++g_16;
else if (s <= 32) ++g_32;
else if (s <= 64) ++g_64;
else if (s <= 128) ++g_128;
else if (s <= 256) ++g_256;
else if (s <= 512) ++g_512;
else if (s <= 1024) ++g_1k;
else if (s <= 2048) ++g_2k;
else ++g_big;
#endif
void* result = HeapManager::allocate(s);
#ifdef HOSTBOOT_MEMORY_LEAKS
memoryleak_magic_instruction(MEMORYLEAK_MALLOC, s, result, NULL);
#endif
return result;
}
void free(void* p)
{
if (NULL == p) return;
#ifdef HOSTBOOT_MEMORY_LEAKS
memoryleak_magic_instruction(MEMORYLEAK_FREE, 0, p, NULL);
#endif
HeapManager::free(p);
}
void* realloc(void* p, size_t s)
{
if (NULL == p) return malloc(s);
void* result = HeapManager::realloc(p,s);
#ifdef HOSTBOOT_MEMORY_LEAKS
memoryleak_magic_instruction(MEMORYLEAK_REALLOC, s, result, p);
#endif
return result;
}
void* calloc(size_t num, size_t size)
{
// Allocate a block of memory for an array of 'num' elements, each of them
// 'size' bytes long and initialize to zero
size_t total_size = num * size;
void* mem = NULL;
if (total_size)
{
mem = malloc(total_size);
memset(mem, 0, total_size);
}
return mem;
}
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