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Support compiling for FreeBSD

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This commit is contained in:
Connor McLaughlin
2021-03-07 19:29:57 +10:00
parent 7190c571f9
commit 627f147a90
8 changed files with 72 additions and 27 deletions
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23
src/common/memory_arena.cpp
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@ -13,7 +13,7 @@ Log_SetChannel(Common::MemoryArena);
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <unistd.h>
#elif defined(__linux__) || defined(__APPLE__)
#elif defined(__linux__) || defined(__APPLE__) || defined(__FreeBSD__)
#include <cerrno>
#include <fcntl.h>
#include <sys/mman.h>
@ -73,7 +73,7 @@ void* MemoryArena::FindBaseAddressForMapping(size_t size)
base_address = VirtualAlloc(nullptr, size, MEM_RESERVE, PAGE_READWRITE);
if (base_address)
VirtualFree(base_address, 0, MEM_RELEASE);
#elif defined(__linux__) || defined(__APPLE__)
#elif defined(__linux__) || defined(__APPLE__) || defined(__FreeBSD__)
base_address = mmap(nullptr, size, PROT_NONE, MAP_ANON | MAP_PRIVATE, -1, 0);
if (base_address)
munmap(base_address, size);
@ -153,18 +153,25 @@ bool MemoryArena::Create(size_t size, bool writable, bool executable)
}
return true;
#elif defined(__APPLE__)
#elif defined(__APPLE__) || defined(__FreeBSD__)
#if defined(__APPLE__)
const std::string file_mapping_name =
StringUtil::StdStringFromFormat("duckstation_%u", static_cast<unsigned>(getpid()));
m_shmem_fd = shm_open(file_mapping_name.c_str(), O_CREAT | O_EXCL | (writable ? O_RDWR : O_RDONLY), 0600);
#else
m_shmem_fd = shm_open(SHM_ANON, O_CREAT | O_EXCL | (writable ? O_RDWR : O_RDONLY), 0600);
#endif
if (m_shmem_fd < 0)
{
Log_ErrorPrintf("shm_open failed: %d", errno);
return false;
}
#ifdef __APPLE__
// we're not going to be opening this mapping in other processes, so remove the file
shm_unlink(file_mapping_name.c_str());
#endif
// ensure it's the correct size
if (ftruncate(m_shmem_fd, static_cast<off_t>(size)) < 0)
@ -187,7 +194,7 @@ void MemoryArena::Destroy()
CloseHandle(m_file_handle);
m_file_handle = nullptr;
}
#elif defined(__linux__)
#elif defined(__linux__) || defined(__FreeBSD__)
if (m_shmem_fd > 0)
{
close(m_shmem_fd);
@ -222,7 +229,7 @@ void* MemoryArena::CreateViewPtr(size_t offset, size_t size, bool writable, bool
base_pointer = mmap64(fixed_address, size, prot, flags, m_shmem_fd, static_cast<off64_t>(offset));
if (base_pointer == reinterpret_cast<void*>(-1))
return nullptr;
#elif defined(__APPLE__)
#elif defined(__APPLE__) || defined(__FreeBSD__)
const int flags = (fixed_address != nullptr) ? (MAP_SHARED | MAP_FIXED) : MAP_SHARED;
const int prot = PROT_READ | (writable ? PROT_WRITE : 0) | (executable ? PROT_EXEC : 0);
base_pointer = mmap(fixed_address, size, prot, flags, m_shmem_fd, static_cast<off_t>(offset));
@ -240,7 +247,7 @@ bool MemoryArena::FlushViewPtr(void* address, size_t size)
{
#if defined(WIN32)
return FlushViewOfFile(address, size);
#elif defined(__linux__) || defined(__APPLE__)
#elif defined(__linux__) || defined(__APPLE__) || defined(__FreeBSD__)
return (msync(address, size, 0) >= 0);
#else
return false;
@ -252,7 +259,7 @@ bool MemoryArena::ReleaseViewPtr(void* address, size_t size)
bool result;
#if defined(WIN32)
result = static_cast<bool>(UnmapViewOfFile(address));
#elif defined(__linux__) || defined(__APPLE__)
#elif defined(__linux__) || defined(__APPLE__) || defined(__FreeBSD__)
result = (munmap(address, size) >= 0);
#else
result = false;
@ -279,7 +286,7 @@ bool MemoryArena::SetPageProtection(void* address, size_t length, bool readable,
DWORD old_protect;
return static_cast<bool>(
VirtualProtect(address, length, protection_table[readable][writable][executable], &old_protect));
#elif defined(__linux__) || defined(__ANDROID__) || defined(__APPLE__)
#elif defined(__linux__) || defined(__ANDROID__) || defined(__APPLE__) || defined(__FreeBSD__)
const int prot = (readable ? PROT_READ : 0) | (writable ? PROT_WRITE : 0) | (executable ? PROT_EXEC : 0);
return (mprotect(address, length, prot) >= 0);
#else