2 * This software is part of the SBCL system. See the README file for
5 * This software is derived from the CMU CL system, which was
6 * written at Carnegie Mellon University and released into the
7 * public domain. The software is in the public domain and is
8 * provided with absolutely no warranty. See the COPYING and CREDITS
9 * files for more information.
13 #include <osreldate.h>
16 #include <sys/types.h>
18 #include <sys/signal.h>
20 #ifdef LISP_FEATURE_DARWIN
21 #include <mach/mach_types.h>
24 typedef caddr_t os_vm_address_t;
25 #if defined __NetBSD__
26 typedef vsize_t os_vm_size_t;
27 #elif defined __OpenBSD__
28 typedef size_t os_vm_size_t;
30 typedef vm_size_t os_vm_size_t;
32 typedef off_t os_vm_offset_t;
33 typedef int os_vm_prot_t;
35 #if defined __OpenBSD__
36 /* name defined for compatibility between OpenBSD 3.1 sigaltstack(2) and
37 * Linux sigaltstack(2) */
38 typedef struct sigaltstack stack_t;
39 #elif defined __FreeBSD__
40 /* FreeBSD 4.6 and NetBSD 1.6 already have stack_t defined. */
43 #if defined __FreeBSD__
44 /* Note: The man page for sigaction(2) in FreeBSD 4.0 says that this
45 * is an mcontext_t, but according to comments by Raymond Wiker in the
46 * original FreeBSD port of SBCL, that's wrong, it's actually a
49 #include <sys/ucontext.h>
50 typedef ucontext_t os_context_t;
51 /* As the sbcl-devel message from Raymond Wiker 2000-12-01, FreeBSD
52 * (unlike Linux and OpenBSD) doesn't let us tweak the CPU's single
53 * step flag bit by messing with the flags stored in a signal context,
54 * so we need to implement single stepping in a more roundabout way. */
55 #define CANNOT_GET_TO_SINGLE_STEP_FLAG
56 #define SIG_MEMORY_FAULT SIGSEGV
57 /* Sometime in late 2005 FreeBSD was changed to signal SIGSEGV instead
58 * of SIGBUS for memory faults, as required by POSIX. In order to
59 * support both new and old FreeBSD at the same time, both signals are
60 * hooked to the GC write barrier machinery. If you're reading this
61 * message in the far future where FreeBSD 6 and earlier are just
62 * quaint memories, feel free to delete this hack (and any code that's
63 * #ifdef SIG_MEMORY_FAULT2'ed). -- JES, 2005-12-30
65 #define SIG_MEMORY_FAULT2 SIGBUS
67 #define SIG_INTERRUPT_THREAD (SIGINFO)
68 #define SIG_STOP_FOR_GC (SIGUSR1)
69 #define SIG_RESUME_FROM_GC (SIGUSR2)
71 #elif defined __OpenBSD__
73 typedef struct sigcontext os_context_t;
74 #define SIG_MEMORY_FAULT SIGSEGV
76 #elif defined __NetBSD__
79 typedef ucontext_t os_context_t;
80 #define SIG_MEMORY_FAULT SIGSEGV
82 #elif defined LISP_FEATURE_DARWIN
83 #include "darwin-os.h"
85 #error unsupported BSD variant
88 #include "target-arch-os.h"
89 #include "target-arch.h"
91 #define OS_VM_PROT_READ PROT_READ
92 #define OS_VM_PROT_WRITE PROT_WRITE
93 #define OS_VM_PROT_EXECUTE PROT_EXEC