PAL.C.T MINI SHELL
/*
* linux/compr_mm.h
*
* Memory management for pre-boot and ramdisk uncompressors
*
* Authors: Alain Knaff <alain@knaff.lu>
*
*/
#ifndef DECOMPR_MM_H
#define DECOMPR_MM_H
#ifdef STATIC
/* Code active when included from pre-boot environment: */
/* A trivial malloc implementation, adapted from
* malloc by Hannu Savolainen 1993 and Matthias Urlichs 1994
*/
static unsigned long malloc_ptr;
static int malloc_count;
static void *malloc(int size)
{
void *p;
if (size < 0)
error("Malloc error");
if (!malloc_ptr)
malloc_ptr = free_mem_ptr;
malloc_ptr = (malloc_ptr + 3) & ~3; /* Align */
p = (void *)malloc_ptr;
malloc_ptr += size;
if (free_mem_end_ptr && malloc_ptr >= free_mem_end_ptr)
error("Out of memory");
malloc_count++;
return p;
}
static void free(void *where)
{
malloc_count--;
if (!malloc_count)
malloc_ptr = free_mem_ptr;
}
#define large_malloc(a) malloc(a)
#define large_free(a) free(a)
#define set_error_fn(x)
#define INIT
#else /* STATIC */
/* Code active when compiled standalone for use when loading ramdisk: */
#include <linux/kernel.h>
#include <linux/fs.h>
#include <linux/string.h>
#include <linux/vmalloc.h>
/* Use defines rather than static inline in order to avoid spurious
* warnings when not needed (indeed large_malloc / large_free are not
* needed by inflate */
#define malloc(a) kmalloc(a, GFP_KERNEL)
#define free(a) kfree(a)
#define large_malloc(a) vmalloc(a)
#define large_free(a) vfree(a)
static void(*error)(char *m);
#define set_error_fn(x) error = x;
#define INIT __init
#define STATIC
#include <linux/init.h>
#endif /* STATIC */
#endif /* DECOMPR_MM_H */
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