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cleanup ifdef chain syntax

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This commit is contained in:
asvitkine 2012-01-01 22:32:24 +00:00
parent 60779756ab
commit c972658d81
1 changed files with 5 additions and 9 deletions
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14
BasiliskII/src/Unix/vm_alloc.cpp
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@ -294,22 +294,20 @@ int vm_acquire_fixed(void * addr, size_t size, int options)
return -1;
#endif
#ifdef HAVE_MACH_VM
#if defined(HAVE_MACH_VM)
// vm_allocate() returns a zero-filled memory region
kern_return_t ret_code = vm_allocate(mach_task_self(), (vm_address_t *)&addr, size, 0);
if (ret_code != KERN_SUCCESS) {
errno = vm_error(ret_code);
return -1;
}
#else
#ifdef HAVE_MMAP_VM
#elif defined(HAVE_MMAP_VM)
int fd = zero_fd;
int the_map_flags = translate_map_flags(options) | map_flags | MAP_FIXED;
if (mmap((caddr_t)addr, size, VM_PAGE_DEFAULT, the_map_flags, fd, 0) == (void *)MAP_FAILED)
return -1;
#else
#ifdef HAVE_WIN32_VM
#elif defined(HAVE_WIN32_VM)
// Windows cannot allocate Low Memory
if (addr == NULL)
return -1;
@ -328,14 +326,12 @@ int vm_acquire_fixed(void * addr, size_t size, int options)
// Unsupported
return -1;
#endif
#endif
#endif
// Explicitely protect the newly mapped region here because on some systems,
// say MacOS X, mmap() doesn't honour the requested protection flags.
if (vm_protect(addr, size, VM_PAGE_DEFAULT) != 0)
return -1;
return 0;
}