display-training: util/malloc_simple.c Source File

00001 
00038 #include <assert.h>
00039 #include <malloc.h>
00040 #include <physmem.h>
00041 #include <string.h>
00042 #include <types.h>
00043 
00044 /* Sanity check */
00045 #ifndef MALLOC_SIMPLE_H_INCLUDED
00046 # error malloc() header does not match implementation
00047 #endif
00048 
00052 void *malloc(size_t size)
00053 {
00054         phys_addr_t     addr;
00055 
00056         assert(size > 0);
00057 
00058         addr = physmem_alloc_low(&cpu_sram_pool, size, 2);
00059         if (addr == PHYSMEM_ALLOC_ERR)
00060                 return NULL;
00061 
00062         return physmem_map(addr, size, PHYS_MAP_WRBUF | PHYS_MAP_WRBACK);
00063 }
00064 
00068 void *zalloc(size_t size)
00069 {
00070         void    *p;
00071 
00072         p = malloc(size);
00073         if (p)
00074                 memset(p, 0, size);
00075 
00076         return p;
00077 }