X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fruntime%2Fbsd-os.c;h=f1697200f9f7655728f229ad726dd97eb255dae7;hb=02d7495253b9075e4d86275590c3e827c814b596;hp=ae80974789fd76c2f3cde94571ac1df206b83826;hpb=bd455348d39bee562296741689882dcb97c46ba3;p=sbcl.git

diff --git a/src/runtime/bsd-os.c b/src/runtime/bsd-os.c
index ae80974..f169720 100644
--- a/src/runtime/bsd-os.c
+++ b/src/runtime/bsd-os.c
@@ -52,12 +52,16 @@ os_vm_size_t os_vm_page_size;
 #include <sys/sysctl.h>
 #include <string.h>
 #include <sys/stat.h> /* For the stat-family wrappers. */
-
+#include <dirent.h>   /* For the opendir()/readdir() wrappers */
+#include <sys/socket.h> /* For the socket() wrapper */
 static void netbsd_init();
 #endif /* __NetBSD__ */
 
 #ifdef __FreeBSD__
 #include <sys/sysctl.h>
+#if defined(LISP_FEATURE_SB_THREAD) && !defined(LISP_FEATURE_SB_PTHREAD_FUTEX)
+#include <sys/umtx.h>
+#endif
 
 static void freebsd_init();
 #endif /* __FreeBSD__ */
@@ -69,10 +73,9 @@ os_init(char *argv[], char *envp[])
 
 #ifdef __NetBSD__
     netbsd_init();
-#endif /* __NetBSD__ */
-#ifdef __FreeBSD__
+#elif defined(__FreeBSD__)
     freebsd_init();
-#endif /* __FreeBSD__ */
+#endif
 }
 
 sigset_t *
@@ -152,16 +155,17 @@ boolean
 is_valid_lisp_addr(os_vm_address_t addr)
 {
     struct thread *th;
-    if(in_range_p(addr, READ_ONLY_SPACE_START, READ_ONLY_SPACE_SIZE) ||
-       in_range_p(addr, STATIC_SPACE_START   , STATIC_SPACE_SIZE) ||
-       in_range_p(addr, DYNAMIC_SPACE_START  , dynamic_space_size))
+
+    if (in_range_p(addr, READ_ONLY_SPACE_START, READ_ONLY_SPACE_SIZE) ||
+        in_range_p(addr, STATIC_SPACE_START, STATIC_SPACE_SIZE) ||
+        in_range_p(addr, DYNAMIC_SPACE_START, dynamic_space_size))
         return 1;
     for_each_thread(th) {
-        if(((os_vm_address_t)th->control_stack_start <= addr) &&
-           (addr < (os_vm_address_t)th->control_stack_end))
+        if (((os_vm_address_t)th->control_stack_start <= addr) &&
+            (addr < (os_vm_address_t)th->control_stack_end))
             return 1;
-        if(in_range_p(addr, (lispobj)th->binding_stack_start,
-                      BINDING_STACK_SIZE))
+        if (in_range_p(addr, (lispobj) th->binding_stack_start,
+                       BINDING_STACK_SIZE))
             return 1;
     }
     return 0;
@@ -177,7 +181,8 @@ is_valid_lisp_addr(os_vm_address_t addr)
  * The GENCGC needs to be hooked into whatever signal is raised for
  * page fault on this OS.
  */
-static void
+
+void
 memory_fault_handler(int signal, siginfo_t *siginfo, void *void_context
 #if defined(LISP_FEATURE_FREEBSD) && defined(LISP_FEATURE_X86_64)
 /* FreeBSD/amd64 stores fault address only in undocumented 4th arg. */
@@ -206,28 +211,29 @@ memory_fault_handler(int signal, siginfo_t *siginfo, void *void_context
 #ifdef LISP_FEATURE_C_STACK_IS_CONTROL_STACK
             lisp_memory_fault_error(context, fault_addr);
 #else
-            if (!interrupt_maybe_gc_int(signal, siginfo, context)) {
+            if (!maybe_gc(context)) {
                 interrupt_handle_now(signal, siginfo, context);
             }
-#if defined(LISP_FEATURE_DARWIN)
-            /* Work around G5 bug; fix courtesy gbyers */
-            DARWIN_FIX_CONTEXT(context);
-#endif
 #endif
         }
 }
 
+#if defined(LISP_FEATURE_MACH_EXCEPTION_HANDLER)
+void
+mach_error_memory_fault_handler(int signal, siginfo_t *siginfo, void *void_context) {
+    lose("Unhandled memory fault. Exiting.");
+}
+#endif
+
 void
 os_install_interrupt_handlers(void)
 {
     SHOW("os_install_interrupt_handlers()/bsd-os/defined(GENCGC)");
+#if defined(LISP_FEATURE_MACH_EXCEPTION_HANDLER)
+    undoably_install_low_level_interrupt_handler(SIG_MEMORY_FAULT,
+                                                 mach_error_memory_fault_handler);
+#else
     undoably_install_low_level_interrupt_handler(SIG_MEMORY_FAULT,
-#ifdef LISP_FEATURE_FREEBSD
-                                                 (__siginfohandler_t *)
-#endif
-                                                 memory_fault_handler);
-#ifdef SIG_MEMORY_FAULT2
-    undoably_install_low_level_interrupt_handler(SIG_MEMORY_FAULT2,
 #ifdef LISP_FEATURE_FREEBSD
                                                  (__siginfohandler_t *)
 #endif
@@ -244,7 +250,6 @@ os_install_interrupt_handlers(void)
                                                  sig_stop_for_gc_handler);
 #endif
 #endif
-
     SHOW("leaving os_install_interrupt_handlers()");
 }
 
@@ -254,15 +259,15 @@ static void
 sigsegv_handler(int signal, siginfo_t *info, void* void_context)
 {
     os_context_t *context = arch_os_get_context(&void_context);
+#if 0
     unsigned int pc =  (unsigned int *)(*os_context_pc_addr(context));
+#endif
     os_vm_address_t addr;
 
-    addr = arch_get_bad_addr(signal,info,context);
-    if(!interrupt_maybe_gc(signal, info, context))
-        if(!handle_guard_page_triggered(context,addr))
+    addr = arch_get_bad_addr(signal, info, context);
+    if (!cheneygc_handle_wp_violation(context, addr))
+        if (!handle_guard_page_triggered(context, addr))
             interrupt_handle_now(signal, info, context);
-    /* Work around G5 bug; fix courtesy gbyers */
-    DARWIN_FIX_CONTEXT(context);
 }
 
 void
@@ -271,10 +276,6 @@ os_install_interrupt_handlers(void)
     SHOW("os_install_interrupt_handlers()/bsd-os/!defined(GENCGC)");
     undoably_install_low_level_interrupt_handler(SIG_MEMORY_FAULT,
                                                  sigsegv_handler);
-#ifdef SIG_MEMORY_FAULT2
-    undoably_install_low_level_interrupt_handler(SIG_MEMORY_FAULT2,
-                                                 sigsegv_handler);
-#endif
 }
 
 #endif /* defined GENCGC */
@@ -316,29 +317,60 @@ The system may fail to start.\n",
     }
 }
 
-/* The stat() routines in NetBSD's C library are compatibility
-   wrappers for some very old version of the stat buffer structure.
-   Programs must be processed by the C toolchain in order to get an
-   up-to-date definition of the stat() routine.  These wrappers are
-   used only in sb-posix, as of 2006-10-15. -- RMK */
-int _stat(const char *path, struct stat *sb) {
-  return (stat(path, sb));
+/* Various routines in NetBSD's C library are compatibility wrappers
+   for old versions. Programs must be processed by the C toolchain in
+   order to get up-to-date definitions of such routines. */
+/* The stat-family, opendir, and readdir are used only in sb-posix, as
+   of 2007-01-16. -- RMK */
+int
+_stat(const char *path, struct stat *sb)
+{
+    return stat(path, sb);
 }
-
-int _lstat(const char *path, struct stat *sb) {
-  return (lstat(path, sb));
+int
+_lstat(const char *path, struct stat *sb)
+{
+    return lstat(path, sb);
 }
-
-int _fstat(int fd, struct stat *sb) {
-  return (fstat(fd, sb));
+int
+_fstat(int fd, struct stat *sb)
+{
+    return fstat(fd, sb);
 }
 
+DIR *
+_opendir(const char *filename)
+{
+    return opendir(filename);
+}
+struct dirent *
+_readdir(DIR *dirp)
+{
+    return readdir(dirp);
+}
 
+/* Used in sb-bsd-sockets. */
+int
+_socket(int domain, int type, int protocol)
+{
+    return socket(domain, type, protocol);
+}
 #endif /* __NetBSD__ */
 
 #ifdef __FreeBSD__
+extern int getosreldate(void);
+
+int sig_memory_fault;
+
 static void freebsd_init()
 {
+    /* Memory fault signal on FreeBSD was changed from SIGBUS to
+     * SIGSEGV. */
+    if (getosreldate() < 700004)
+        sig_memory_fault = SIGBUS;
+    else
+        sig_memory_fault = SIGSEGV;
+
     /* Quote from sbcl-devel (NIIMI Satoshi): "Some OSes, like FreeBSD
      * 4.x with GENERIC kernel, does not enable SSE support even on
      * SSE capable CPUs". Detect this situation and skip the
@@ -346,17 +378,56 @@ static void freebsd_init()
      * x86-assem.S.
      */
 #ifdef LISP_FEATURE_X86
-    size_t len;
-    int instruction_sse;
-
-    len = sizeof(instruction_sse);
-    if (sysctlbyname("hw.instruction_sse", &instruction_sse, &len, NULL, 0) == 0
-        && instruction_sse != 0) {
-        /* Use the SSE detector */
-        fast_bzero_pointer = fast_bzero_detect;
+    {
+        size_t len;
+        int instruction_sse;
+
+        len = sizeof(instruction_sse);
+        if (sysctlbyname("hw.instruction_sse", &instruction_sse, &len,
+                         NULL, 0) == 0 && instruction_sse != 0) {
+            /* Use the SSE detector */
+            fast_bzero_pointer = fast_bzero_detect;
+        }
     }
 #endif /* LISP_FEATURE_X86 */
 }
+
+#if defined(LISP_FEATURE_SB_THREAD) && !defined(LISP_FEATURE_SB_PTHREAD_FUTEX)
+int
+futex_wait(int *lock_word, long oldval, long sec, unsigned long usec)
+{
+    struct timespec timeout;
+    int ret;
+
+again:
+    if (sec < 0)
+        ret = umtx_wait((void *)lock_word, oldval, NULL);
+    else {
+        timeout.tv_sec = sec;
+        timeout.tv_nsec = usec * 1000;
+        ret = umtx_wait((void *)lock_word, oldval, &timeout);
+    }
+
+    switch (ret) {
+    case 0:
+        return 0;
+    case ETIMEDOUT:
+        return 1;
+    case EINTR:
+        /* spurious wakeup from interrupt */
+        goto again;
+    default:
+        /* EWOULDBLOCK and others, need to check the lock */
+        return -1;
+    }
+}
+
+int
+futex_wake(int *lock_word, int n)
+{
+    return umtx_wake((void *)lock_word, n);
+}
+#endif
 #endif /* __FreeBSD__ */
 
 #ifdef LISP_FEATURE_DARWIN
@@ -366,8 +437,6 @@ static void freebsd_init()
 #define KERN_PROC_PATHNAME 12
 #endif
 
-extern int getosreldate(void);
-
 char *
 os_get_runtime_executable_path()
 {
@@ -395,7 +464,20 @@ os_get_runtime_executable_path()
         return NULL;
     return copied_string(path);
 }
-#else /* Not DARWIN or FREEBSD */
+#elif defined(LISP_FEATURE_NETBSD)
+char *
+os_get_runtime_executable_path()
+{
+    struct stat sb;
+    char *path = strdup("/proc/curproc/file");
+    if (path && ((stat(path, &sb)) == 0))
+        return path;
+    else {
+        fprintf(stderr, "Couldn't stat /proc/curproc/file; is /proc mounted?\n");
+        return NULL;
+    }
+}
+#else /* Not DARWIN or FREEBSD or NETBSD */
 char *
 os_get_runtime_executable_path()
 {