Massive dump of xenia-info required code.

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

src/core/memory.cc

@@ -0,0 +1,74 @@
+/**
+ ******************************************************************************
+ * 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/memory.h>
+
+#include <sys/mman.h>
+
+
+/**
+ * Memory map:
+ * 0x00000000 - 0x40000000 (1024mb) - virtual 4k pages
+ * 0x40000000 - 0x80000000 (1024mb) - virtual 64k pages
+ * 0x80000000 - 0x8C000000 ( 192mb) - xex 64k pages
+ * 0x8C000000 - 0x90000000 (  64mb) - xex 64k pages (encrypted)
+ * 0x90000000 - 0xA0000000 ( 256mb) - xex 4k pages
+ * 0xA0000000 - 0xC0000000 ( 512mb) - physical 64k pages
+ *
+ * We use the host OS to create an entire addressable range for this. That way
+ * we don't have to emulate a TLB. It'd be really cool to pass through page
+ * sizes or use madvice to let the OS know what to expect.
+ */
+
+
+struct xe_memory {
+  xe_ref_t ref;
+
+  size_t    length;
+  void      *ptr;
+};
+
+
+xe_memory_ref xe_memory_create(xe_pal_ref pal, xe_memory_options_t options) {
+  xe_memory_ref memory = (xe_memory_ref)xe_calloc(sizeof(xe_memory));
+  xe_ref_init((xe_ref)memory);
+
+  memory->length = 0xC0000000;
+  memory->ptr = mmap(0, memory->length, PROT_READ | PROT_WRITE,
+                     MAP_PRIVATE | MAP_ANON, -1, 0);
+  XEEXPECTNOTNULL(memory->ptr);
+  XEEXPECT(memory->ptr != MAP_FAILED);
+
+  return memory;
+
+XECLEANUP:
+  xe_memory_release(memory);
+  return NULL;
+}
+
+void xe_memory_dealloc(xe_memory_ref memory) {
+  munmap(memory->ptr, memory->length);
+}
+
+xe_memory_ref xe_memory_retain(xe_memory_ref memory) {
+  xe_ref_retain((xe_ref)memory);
+  return memory;
+}
+
+void xe_memory_release(xe_memory_ref memory) {
+  xe_ref_release((xe_ref)memory, (xe_ref_dealloc_t)xe_memory_dealloc);
+}
+
+size_t xe_memory_get_length(xe_memory_ref memory) {
+  return memory->length;
+}
+
+void* xe_memory_addr(xe_memory_ref memory, uint32_t guest_addr) {
+  return (uint8_t*)memory->ptr + guest_addr;
+}