The-Homebrew-Cloud/dolphin
2
0
Fork 0
mirror of https://github.com/dolphin-emu/dolphin.git synced 2025-06-13 00:58:29 +02:00
Code Issues Packages Projects Releases Wiki Activity

Various changes which improve FreeBSD support.

Browse Source 
Patches by martymac, all credits go to him ;)
This commit is contained in:
NeoBrainX
2011-08-27 20:42:11 +02:00
parent c0dd84cf7d
commit 06e640532a
7 changed files with 66 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

48
Source/Core/Common/Src/MemoryUtil.cpp
View File

@ -27,28 +27,64 @@
#include <stdio.h>
#endif
#if !defined(MAP_32BIT)
#include <unistd.h>
#define PAGE_MASK (getpagesize() - 1)
#define round_page(x) ((((unsigned long)(x)) + PAGE_MASK) & ~(PAGE_MASK))
#endif
// This is purposely not a full wrapper for virtualalloc/mmap, but it
// provides exactly the primitive operations that Dolphin needs.
void* AllocateExecutableMemory(size_t size, bool low)
{
#ifdef _WIN32
static char *map_hint = 0;
#if defined(__x86_64__) && !defined(MAP_32BIT)
if (low && (!map_hint))
map_hint = (char*)round_page(512*1024*1024); /* 0.5 GB rounded up to the next page */
#endif
#if defined(_WIN32)
void* ptr = VirtualAlloc(0, size, MEM_COMMIT, PAGE_EXECUTE_READWRITE);
#else
void* ptr = mmap(0, size, PROT_READ | PROT_WRITE | PROT_EXEC,
void* ptr = mmap(map_hint, size, PROT_READ | PROT_WRITE | PROT_EXEC,
MAP_ANON | MAP_PRIVATE
#if defined __linux__ && defined __x86_64__
#if defined(__x86_64__)
#if defined(MAP_32BIT)
| (low ? MAP_32BIT : 0)
#endif
#else
| (low ? MAP_FIXED : 0)
#endif /* defined(MAP_32BIT) */
#endif /* defined(__x86_64__) */
, -1, 0);
#endif
#endif /* defined(_WIN32) */
// printf("Mapped executable memory at %p (size %ld)\n", ptr,
// (unsigned long)size);
#if defined(__FreeBSD__)
if (ptr == MAP_FAILED)
{
ptr = NULL;
#else
if (ptr == NULL)
{
#endif
PanicAlert("Failed to allocate executable memory");
#ifdef _M_X64
}
#if defined(__x86_64__) && !defined(MAP_32BIT)
else
{
if (low)
{
map_hint += size;
map_hint = (char*)round_page(map_hint); /* round up to the next page */
// printf("Next map will (hopefully) be at %p\n", map_hint);
}
}
#endif
#if defined(_M_X64)
if ((u64)ptr >= 0x80000000 && low == true)
PanicAlert("Executable memory ended up above 2GB!");
#endif