/*
*/
+#define _GNU_SOURCE // needed for MAP_ANONYMOUS to be avaliable
#include "common.h"
#include <stdio.h>
#include <stdlib.h>
size_t size = (VirtAddr & 0xFFF) + ByteCount;
void *tmp;
#if __WIN32__
- tmp = VirtualAlloc(base, size, MEM_COMMIT, PAGE_EXECUTE_READWRITE);
+ do
+ {
+ MEMORY_BASIC_INFORMATION info;
+ VirtualQuery( (void*)base, &info, sizeof(info) );
+ if( info.State != MEM_FREE ) {
+ printf("ERROR: Unable to allocate memory %p+0x%x, already allocated\n",
+ (void*)base, size);
+ base += 0x1000;
+ if( size < 0x1000 )
+ return 0;
+ size -= 0x1000;
+ }
+ else
+ break;
+ } while( size >= 0x1000 );
+ tmp = VirtualAlloc((void*)base, size, MEM_RESERVE|MEM_COMMIT, PAGE_EXECUTE_READWRITE);
if( tmp == NULL ) {
- printf("ERROR: Unable to allocate memory (%i)\n", GetLastError());
+ printf("ERROR: Unable to allocate memory %p+%x (0x%x)\n",
+ (void*)base, size,
+ (int)GetLastError());
return -1;
}
#else
+// printf("AllocateMemory: mmap(%p, 0x%lx, ...)\n", (void*)base, ByteCount);
tmp = mmap((void*)base, size, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0);
if( tmp == MAP_FAILED ) {
+ printf("ERROR: Unable to allocate memory\n");
+ perror("AllocateMemory");
return -1;
}
+// printf("AllocateMemory: RETURN 0\n");
#endif
return 0;
}
uintptr_t FindFreeRange(size_t ByteCount, int MaxBits)
{
- #if __WIN32__
- # error "Windows FindFreeRange() unimplemented"
- #else
uintptr_t base, ofs, size;
uintptr_t end = -1;
static const int PAGE_SIZE = 0x1000;
end <<= (sizeof(intptr_t)*8-MaxBits);
end >>= (sizeof(intptr_t)*8-MaxBits);
- printf("end = %p\n", (void*)end);
+// printf("end = %p\n", (void*)end);
// for( base = 0; base < end - size; base -= PAGE_SIZE )
for( base = end - size + 1; base > 0; base -= PAGE_SIZE )
{
for( ofs = 0; ofs < size; ofs += PAGE_SIZE ) {
+ #if __WIN32__
+ MEMORY_BASIC_INFORMATION info;
+ VirtualQuery( (void*)(base + ofs), &info, sizeof(info) );
+ if( info.State != MEM_FREE )
+ break;
+ #else
if( msync( (void*)(base+ofs), 1, 0) == 0 )
break;
if( errno != ENOMEM )
perror("FindFreeRange, msync");
+ #endif
}
if( ofs >= size ) {
return base;
}
}
return 0;
- #endif
}