Massive dump of xenia-info required code.

This is a working xenia-info for xex files (no gdfs files yet).

src/core/mmap_posix.cc

@@ -0,0 +1,101 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2013 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#include <xenia/core/mmap.h>
+
+#include <sys/mman.h>
+
+
+typedef struct xe_mmap {
+  xe_ref_t ref;
+
+  void* file_handle;
+  void* mmap_handle;
+
+  void* addr;
+  size_t length;
+} xe_mmap_t;
+
+
+xe_mmap_ref xe_mmap_open(xe_pal_ref pal, const xe_file_mode mode,
+                         const xechar_t *path,
+                         const size_t offset, const size_t length) {
+  xe_mmap_ref mmap = (xe_mmap_ref)xe_calloc(sizeof(xe_mmap_t));
+  xe_ref_init((xe_ref)mmap);
+
+  xechar_t mode_string[10];
+  mode_string[0] = 0;
+  if (mode & kXEFileModeRead) {
+    XEIGNORE(xestrcat(mode_string, XECOUNT(mode_string), XT("r")));
+  }
+  if (mode & kXEFileModeWrite) {
+    XEIGNORE(xestrcat(mode_string, XECOUNT(mode_string), XT("w")));
+  }
+  XEIGNORE(xestrcat(mode_string, XECOUNT(mode_string), XT("b")));
+
+  int prot = 0;
+  if (mode & kXEFileModeRead) {
+    prot |= PROT_READ;
+  }
+  if (mode & kXEFileModeWrite) {
+    prot |= PROT_WRITE;
+  }
+
+  FILE* file_handle = fopen(path, mode_string);
+  mmap->file_handle = file_handle;
+  XEEXPECTNOTNULL(mmap->file_handle);
+
+  size_t map_length;
+  map_length = length;
+  if (!length) {
+    fseeko(file_handle, 0, SEEK_END);
+    map_length = ftello(file_handle);
+  }
+  mmap->length = map_length;
+
+  mmap->addr = ::mmap(0, map_length, prot, MAP_SHARED, fileno(file_handle),
+                      offset);
+  XEEXPECTNOTNULL(mmap->addr);
+
+  return mmap;
+
+XECLEANUP:
+  xe_mmap_release(mmap);
+  return NULL;
+}
+
+void xe_mmap_dealloc(xe_mmap_ref mmap) {
+  if (mmap->addr) {
+    munmap(mmap->addr, mmap->length);
+    mmap->addr = NULL;
+  }
+
+  FILE* file_handle = (FILE*)mmap->file_handle;
+  if (file_handle) {
+    fclose(file_handle);
+    mmap->file_handle = NULL;
+  }
+}
+
+xe_mmap_ref xe_mmap_retain(xe_mmap_ref mmap) {
+  xe_ref_retain((xe_ref)mmap);
+  return mmap;
+}
+
+void xe_mmap_release(xe_mmap_ref mmap) {
+  xe_ref_release((xe_ref)mmap, (xe_ref_dealloc_t)xe_mmap_dealloc);
+}
+
+void* xe_mmap_get_addr(xe_mmap_ref mmap) {
+  return mmap->addr;
+}
+
+size_t xe_mmap_get_length(xe_mmap_ref mmap) {
+  return mmap->length;
+}