1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
|
//
// os/winapi/alloc.h: Low-level WinAPI-based allocators.
//
// CEN64: Cycle-Accurate Nintendo 64 Emulator.
// Copyright (C) 2015, Tyler J. Stachecki.
//
// This file is subject to the terms and conditions defined in
// 'LICENSE', which is part of this source code package.
//
#include "common.h"
#include "os/common/alloc.h"
#include <stddef.h>
#include <windows.h>
// Allocates a block of (R/W/X) memory.
void *cen64_alloc(struct cen64_mem *m, size_t size, bool exec) {
int access = exec ? PAGE_EXECUTE_READWRITE : PAGE_READWRITE;
if ((m->ptr = VirtualAlloc(NULL, size,
MEM_COMMIT | MEM_RESERVE, access)) == NULL)
return NULL;
m->size = size;
return m->ptr;
}
// Releases resources acquired by cen64_alloc_init.
void cen64_alloc_cleanup(void) {
}
// Initializes CEN64's low-level allocator.
int cen64_alloc_init(void) {
return 0;
}
// Releases resources acquired by cen64_alloc.
void cen64_free(struct cen64_mem *m) {
VirtualFree(m->ptr, 0, MEM_RELEASE);
}
|
