clean up mmap hacks

[pcsx_rearmed.git] / frontend / linux / plat_mmap.c

diff --git a/frontend/linux/plat_mmap.c b/frontend/linux/plat_mmap.c
deleted file mode 100644 (file)
index db661b6..0000000
--- a/frontend/linux/plat_mmap.c
+++ /dev/null
@@ -1,91 +0,0 @@
-/*
- * (C) Gražvydas "notaz" Ignotas, 2008-2010
- *
- * This work is licensed under the terms of any of these licenses
- * (at your option):
- *  - GNU GPL, version 2 or later.
- *  - GNU LGPL, version 2.1 or later.
- * See the COPYING file in the top-level directory.
- */
-
-#define _GNU_SOURCE 1
-#include <stdio.h>
-#include <string.h>
-#include <stdarg.h>
-#include <unistd.h>
-#include <sys/mman.h>
-#include <errno.h>
-
-// this is some dupe code to avoid libpicofe dep
-
-//#include "../libpicofe/plat.h"
-
-/* XXX: maybe unhardcode pagesize? */
-#define HUGETLB_PAGESIZE (2 * 1024 * 1024)
-#define HUGETLB_THRESHOLD (HUGETLB_PAGESIZE / 2)
-#ifndef MAP_HUGETLB
-#define MAP_HUGETLB 0x40000 /* arch specific */
-#endif
-
-void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed)
-{
-       static int hugetlb_disabled;
-       int prot = PROT_READ | PROT_WRITE;
-       int flags = MAP_PRIVATE | MAP_ANONYMOUS;
-       void *req, *ret;
-
-       req = (void *)addr;
-       if (need_exec)
-               prot |= PROT_EXEC;
-       if (is_fixed)
-               flags |= MAP_FIXED;
-       if (size >= HUGETLB_THRESHOLD && !hugetlb_disabled)
-               flags |= MAP_HUGETLB;
-
-       ret = mmap(req, size, prot, flags, -1, 0);
-       if (ret == MAP_FAILED && (flags & MAP_HUGETLB)) {
-               fprintf(stderr,
-                       "warning: failed to do hugetlb mmap (%p, %zu): %d\n",
-                       req, size, errno);
-               hugetlb_disabled = 1;
-               flags &= ~MAP_HUGETLB;
-               ret = mmap(req, size, prot, flags, -1, 0);
-       }
-       if (ret == MAP_FAILED)
-               return NULL;
-
-       if (req != NULL && ret != req)
-               fprintf(stderr,
-                       "warning: mmaped to %p, requested %p\n", ret, req);
-
-       return ret;
-}
-
-void *plat_mremap(void *ptr, size_t oldsize, size_t newsize)
-{
-       void *ret;
-
-       ret = mremap(ptr, oldsize, newsize, MREMAP_MAYMOVE);
-       if (ret == MAP_FAILED)
-               return NULL;
-       if (ret != ptr)
-               printf("warning: mremap moved: %p -> %p\n", ptr, ret);
-
-       return ret;
-}
-
-void plat_munmap(void *ptr, size_t size)
-{
-       int ret;
-
-       ret = munmap(ptr, size);
-       if (ret != 0 && (size & (HUGETLB_PAGESIZE - 1))) {
-               // prehaps an autorounded hugetlb mapping?
-               size = (size + HUGETLB_PAGESIZE - 1) & ~(HUGETLB_PAGESIZE - 1);
-               ret = munmap(ptr, size);
-       }
-       if (ret != 0) {
-               fprintf(stderr,
-                       "munmap(%p, %zu) failed: %d\n", ptr, size, errno);
-       }
-}