Split GENCGC_PAGE_BYTES in 3 constants
[sbcl.git] / src / runtime / runtime.c
index 6c2df40..f127933 100644 (file)
@@ -35,6 +35,7 @@
 #endif
 #include <errno.h>
 #include <locale.h>
+#include <limits.h>
 
 #if defined(SVR4) || defined(__linux__)
 #include <time.h>
 #include "signal.h"
 
 #include "runtime.h"
-#include "alloc.h"
 #include "vars.h"
 #include "globals.h"
 #include "os.h"
+#include "interr.h"
+#include "alloc.h"
 #include "interrupt.h"
 #include "arch.h"
 #include "gc.h"
-#include "interr.h"
 #include "validate.h"
 #include "core.h"
 #include "save.h"
 #endif
 
 #ifndef SBCL_HOME
-#define SBCL_HOME "/usr/local/lib/sbcl/"
+#define SBCL_HOME SBCL_PREFIX"/lib/sbcl/"
+#endif
+
+#ifdef LISP_FEATURE_HPUX
+extern void *return_from_lisp_stub;
+#include "genesis/closure.h"
+#include "genesis/simple-fun.h"
 #endif
 
 \f
 /* SIGINT handler that invokes the monitor (for when Lisp isn't up to it) */
 static void
-sigint_handler(int signal, siginfo_t *info, void *void_context)
+sigint_handler(int signal, siginfo_t *info, os_context_t *context)
 {
     lose("\nSIGINT hit at 0x%08lX\n",
-         (unsigned long) *os_context_pc_addr(void_context));
+         (unsigned long) *os_context_pc_addr(context));
 }
 
 /* (This is not static, because we want to be able to call it from
@@ -121,6 +128,37 @@ copied_existing_filename_or_null(char *filename)
         return copied_string(filename);
     }
 }
+
+#ifndef LISP_FEATURE_WIN32
+char *
+copied_realpath(const char *pathname)
+{
+    char *messy, *tidy;
+    size_t len;
+
+    /* realpath() supposedly can't be counted on to always return
+     * an absolute path, so we prepend the cwd to relative paths */
+    messy = NULL;
+    if (pathname[0] != '/') {
+        messy = successful_malloc(PATH_MAX + 1);
+        if (getcwd(messy, PATH_MAX + 1) == NULL) {
+            free(messy);
+            return NULL;
+        }
+        len = strlen(messy);
+        snprintf(messy + len, PATH_MAX + 1 - len, "/%s", pathname);
+    }
+
+    tidy = successful_malloc(PATH_MAX + 1);
+    if (realpath((messy ? messy : pathname), tidy) == NULL) {
+        free(messy);
+        free(tidy);
+        return NULL;
+    }
+
+    return tidy;
+}
+#endif /* LISP_FEATURE_WIN32 */
 \f
 /* miscellaneous chattiness */
 
@@ -199,11 +237,58 @@ search_for_core ()
     return core;
 }
 
+/* Try to find the path to an executable from argv[0], this is only
+ * used when os_get_runtime_executable_path() returns NULL */
+#ifdef LISP_FEATURE_WIN32
+char *
+search_for_executable(const char *argv0)
+{
+    return NULL;
+}
+#else /* LISP_FEATURE_WIN32 */
+char *
+search_for_executable(const char *argv0)
+{
+    char *search, *start, *end, *buf;
+
+    /* If argv[0] contains a slash then it's probably an absolute path
+     * or relative to the current directory, so check if it exists. */
+    if (strchr(argv0, '/') != NULL && access(argv0, F_OK) == 0)
+        return copied_realpath(argv0);
+
+    /* Bail on an absolute path which doesn't exist */
+    if (argv0[0] == '/')
+        return NULL;
+
+    /* Otherwise check if argv[0] exists relative to any directory in PATH */
+    search = getenv("PATH");
+    if (search == NULL)
+        return NULL;
+    search = copied_string(search);
+    buf = successful_malloc(PATH_MAX + 1);
+    for (start = search; (end = strchr(start, ':')) != NULL; start = end + 1) {
+        *end = '\0';
+        snprintf(buf, PATH_MAX + 1, "%s/%s", start, argv0);
+        if (access(buf, F_OK) == 0) {
+            free(search);
+            search = copied_realpath(buf);
+            free(buf);
+            return search;
+        }
+    }
+
+    free(search);
+    free(buf);
+    return NULL;
+}
+#endif /* LISP_FEATURE_WIN32 */
+
 char **posix_argv;
 char *core_string;
 
 struct runtime_options *runtime_options;
 
+char *saved_runtime_path = NULL;
 \f
 int
 main(int argc, char *argv[], char *envp[])
@@ -223,28 +308,37 @@ main(int argc, char *argv[], char *envp[])
     /* other command line options */
     boolean noinform = 0;
     boolean end_runtime_options = 0;
+    boolean disable_lossage_handler_p = 0;
 
     lispobj initial_function;
     const char *sbcl_home = getenv("SBCL_HOME");
 
     interrupt_init();
-    block_blockable_signals();
+    block_blockable_signals(0, 0);
 
     setlocale(LC_ALL, "");
 
     runtime_options = NULL;
 
+    /* Save the argv[0] derived runtime path in case
+     * os_get_runtime_executable_path(1) isn't able to get an
+     * externally-usable path later on. */
+    saved_runtime_path = search_for_executable(argv[0]);
+
     /* Check early to see if this executable has an embedded core,
      * which also populates runtime_options if the core has runtime
      * options */
-    runtime_path = os_get_runtime_executable_path();
-    if (runtime_path) {
-        os_vm_offset_t offset = search_for_embedded_core(runtime_path);
+    runtime_path = os_get_runtime_executable_path(0);
+    if (runtime_path || saved_runtime_path) {
+        os_vm_offset_t offset = search_for_embedded_core(
+            runtime_path ? runtime_path : saved_runtime_path);
         if (offset != -1) {
             embedded_core_offset = offset;
-            core = runtime_path;
+            core = (runtime_path ? runtime_path :
+                    copied_string(saved_runtime_path));
         } else {
-            free(runtime_path);
+            if (runtime_path)
+                free(runtime_path);
         }
     }
 
@@ -269,6 +363,8 @@ main(int argc, char *argv[], char *envp[])
                  * TOPLEVEL-INIT sees the option. */
                 noinform = 1;
                 end_runtime_options = 1;
+                disable_lossage_handler_p = 1;
+                lose_on_corruption_p = 1;
                 break;
             } else if (0 == strcmp(arg, "--noinform")) {
                 noinform = 1;
@@ -298,14 +394,23 @@ main(int argc, char *argv[], char *envp[])
                 ++argi;
                 if (argi >= argc)
                     lose("missing argument for --dynamic-space-size");
-                errno = 0;
-                dynamic_space_size = strtol(argv[argi++], 0, 0) << 20;
-                if (errno)
-                    lose("argument to --dynamic-space-size is not a number");
+                {
+                  char *tail;
+                  long tmp = strtol(argv[argi++], &tail, 0);
+                  if (tail[0])
+                    lose("--dynamic-space-size argument is not a number");
+                  if ((tmp <= 0) ||
+                      (tmp >= (LONG_MAX >> 20))) {
+                    lose("--dynamic-space-size argument is out of range");
+                  }
+                  dynamic_space_size = tmp << 20;
+                }
 #               ifdef MAX_DYNAMIC_SPACE_END
-                if (!((DYNAMIC_SPACE_START < DYNAMIC_SPACE_START+dynamic_space_size) &&
-                      (DYNAMIC_SPACE_START+dynamic_space_size <= MAX_DYNAMIC_SPACE_END)))
-                    lose("specified --dynamic-space-size too large");
+                if (!((DYNAMIC_SPACE_START <
+                       DYNAMIC_SPACE_START+dynamic_space_size) &&
+                      (DYNAMIC_SPACE_START+dynamic_space_size <=
+                       MAX_DYNAMIC_SPACE_END)))
+                    lose("--dynamic-space-size argument is too large");
 #               endif
             } else if (0 == strcmp(arg, "--control-stack-size")) {
                 ++argi;
@@ -329,6 +434,12 @@ main(int argc, char *argv[], char *envp[])
                     ++n;
                 }
                 ++argi;
+            } else if (0 == strcmp(arg, "--disable-ldb")) {
+                disable_lossage_handler_p = 1;
+                ++argi;
+            } else if (0 == strcmp(arg, "--lose-on-corruption")) {
+                lose_on_corruption_p = 1;
+                ++argi;
             } else if (0 == strcmp(arg, "--end-runtime-options")) {
                 end_runtime_options = 1;
                 ++argi;
@@ -371,6 +482,9 @@ main(int argc, char *argv[], char *envp[])
     /* Align down to multiple of page_table page size, and to the appropriate
      * stack alignment. */
     dynamic_space_size &= ~(PAGE_BYTES-1);
+#ifdef LISP_FEATURE_GENCGC
+    dynamic_space_size &= ~(GENCGC_CARD_BYTES-1);
+#endif
     thread_control_stack_size &= ~(CONTROL_STACK_ALIGNMENT_BYTES-1);
 
     /* Preserve the runtime options for possible future core saving */
@@ -411,14 +525,15 @@ main(int argc, char *argv[], char *envp[])
         fflush(stdout);
     }
 
-#if defined(SVR4) || defined(__linux__)
+#if defined(SVR4) || defined(__linux__) || defined(__NetBSD__)
     tzset();
 #endif
 
     define_var("nil", NIL, 1);
     define_var("t", T, 1);
 
-    enable_lossage_handler();
+    if (!disable_lossage_handler_p)
+        enable_lossage_handler();
 
     globals_init();
 
@@ -426,6 +541,12 @@ main(int argc, char *argv[], char *envp[])
     if (initial_function == NIL) {
         lose("couldn't find initial function\n");
     }
+#ifdef LISP_FEATURE_HPUX
+    /* -1 = CLOSURE_FUN_OFFSET, 23 = SIMPLE_FUN_CODE_OFFSET, we are
+     * not in LANGUAGE_ASSEMBLY so we cant reach them. */
+    return_from_lisp_stub = (void *) ((char *)*((unsigned long *)
+                 ((char *)initial_function + -1)) + 23);
+#endif
 
     gc_initialize_pointers();