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/*
* This software is part of the SBCL system. See the README file for
* more information.
*
* This software is derived from the CMU CL system, which was
* written at Carnegie Mellon University and released into the
* public domain. The software is in the public domain and is
* provided with absolutely no warranty. See the COPYING and CREDITS
* files for more information.
*/
#if defined(LISP_FEATURE_FREEBSD)
#include <osreldate.h>
#endif
#include <sys/types.h>
#include <sys/mman.h>
#include <sys/signal.h>
#ifdef LISP_FEATURE_DARWIN
#include <mach/mach_types.h>
#endif
typedef caddr_t os_vm_address_t;
#if defined __NetBSD__
typedef vsize_t os_vm_size_t;
#elif defined __OpenBSD__
typedef size_t os_vm_size_t;
#else
typedef vm_size_t os_vm_size_t;
#endif
typedef off_t os_vm_offset_t;
typedef int os_vm_prot_t;
#if defined(LISP_FEATURE_FREEBSD)
/* Note: The man page for sigaction(2) in FreeBSD 4.0 says that this
* is an mcontext_t, but according to comments by Raymond Wiker in the
* original FreeBSD port of SBCL, that's wrong, it's actually a
* ucontext_t. */
#include <sys/ucontext.h>
typedef ucontext_t os_context_t;
/* As the sbcl-devel message from Raymond Wiker 2000-12-01, FreeBSD
* (unlike Linux and OpenBSD) doesn't let us tweak the CPU's single
* step flag bit by messing with the flags stored in a signal context,
* so we need to implement single stepping in a more roundabout way. */
#define CANNOT_GET_TO_SINGLE_STEP_FLAG
/* Sometime in late 2005 FreeBSD was changed to signal SIGSEGV instead
* of SIGBUS for memory faults, as required by POSIX. In order to
* support both new and old FreeBSD at the same time, both signals are
* hooked to the GC write barrier machinery. If you're reading this
* message in the far future where FreeBSD 6 and earlier are just
* quaint memories, feel free to delete this hack (and any code that's
* #ifdef SIG_MEMORY_FAULT2'ed). -- JES, 2005-12-30
*/
/* Hooking both SIGBUS and SIGSEGV causes troubles on some situation,
* so use a variable.
*/
extern int sig_memory_fault;
#define SIG_MEMORY_FAULT (sig_memory_fault)
#define SIG_STOP_FOR_GC (SIGUSR2)
#elif defined __OpenBSD__
typedef struct sigcontext os_context_t;
#define SIG_MEMORY_FAULT SIGSEGV
#if defined(LISP_FEATURE_X86)
extern int openbsd_use_fxsave;
#endif
#elif defined __NetBSD__
#include <ucontext.h>
typedef ucontext_t os_context_t;
#define SIG_MEMORY_FAULT SIGSEGV
#define SIG_STOP_FOR_GC (SIGUSR2)
#elif defined LISP_FEATURE_DARWIN
#include "darwin-os.h"
#else
#error unsupported BSD variant
#endif
#include "target-arch-os.h"
#include "target-arch.h"
#define OS_VM_PROT_READ PROT_READ
#define OS_VM_PROT_WRITE PROT_WRITE
#define OS_VM_PROT_EXECUTE PROT_EXEC