#include <signal.h>
/* #include <sys/sysinfo.h> */
#include "validate.h"
+#if defined LISP_FEATURE_GENCGC
+#include "gencgc-internal.h"
+#endif
\f
os_vm_size_t os_vm_page_size;
#include <sys/resource.h>
#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>
-#include <osreldate.h>
+#if defined(LISP_FEATURE_SB_THREAD) && !defined(LISP_FEATURE_SB_PTHREAD_FUTEX)
+#include <sys/umtx.h>
+#endif
static void freebsd_init();
#endif /* __FreeBSD__ */
+#ifdef __OpenBSD__
+#include <sys/types.h>
+#include <sys/resource.h>
+#include <sys/stat.h>
+#include <dlfcn.h>
+
+static void openbsd_init();
+#endif
+
void
os_init(char *argv[], char *envp[])
{
#ifdef __NetBSD__
netbsd_init();
-#endif /* __NetBSD__ */
-#ifdef __FreeBSD__
+#elif defined(__FreeBSD__)
freebsd_init();
-#endif /* __FreeBSD__ */
-}
-
-int *os_context_pc_addr(os_context_t *context)
-{
-#if defined __FreeBSD__
- return CONTEXT_ADDR_FROM_STEM(eip);
-#elif defined __OpenBSD__
- return CONTEXT_ADDR_FROM_STEM(pc);
-#elif defined __NetBSD__
- return CONTEXT_ADDR_FROM_STEM(EIP);
-#elif defined(LISP_FEATURE_DARWIN) && defined(LISP_FEATURE_X86)
- return CONTEXT_ADDR_FROM_STEM(eip);
-#elif defined LISP_FEATURE_DARWIN
- return &context->uc_mcontext->ss.srr0;
-#else
-#error unsupported BSD variant
+#elif defined(__OpenBSD__)
+ openbsd_init();
#endif
}
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((th->control_stack_start <= addr) && (addr < 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, th->binding_stack_start, BINDING_STACK_SIZE))
+ if (in_range_p(addr, (lispobj) th->binding_stack_start,
+ BINDING_STACK_SIZE))
return 1;
}
return 0;
* The GENCGC needs to be hooked into whatever signal is raised for
* page fault on this OS.
*/
-static void
-memory_fault_handler(int signal, siginfo_t *siginfo, void *void_context)
+
+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. */
+ ,void *fault_addr
+#endif
+ )
{
os_context_t *context = arch_os_get_context(&void_context);
+#if defined(LISP_FEATURE_FREEBSD) && defined(LISP_FEATURE_X86_64)
+ /* KLUDGE: Store fault address into si_addr for compatibilities. */
+ siginfo->si_addr = fault_addr;
+#else
void *fault_addr = arch_get_bad_addr(signal, siginfo, context);
+#endif
#if defined(LISP_FEATURE_RESTORE_TLS_SEGMENT_REGISTER_FROM_CONTEXT)
FSHOW_SIGNAL((stderr, "/ TLS: restoring fs: %p in memory_fault_handler\n",
os_restore_tls_segment_register(context);
#endif
- FSHOW((stderr, "Memory fault at: %p, PC: %x\n", fault_addr, *os_context_pc_addr(context)));
+ FSHOW((stderr, "Memory fault at: %p, PC: %p\n", fault_addr, *os_context_pc_addr(context)));
if (!gencgc_handle_wp_violation(fault_addr))
if(!handle_guard_page_triggered(context,fault_addr)) {
#ifdef LISP_FEATURE_C_STACK_IS_CONTROL_STACK
- arrange_return_to_lisp_function(context, SymbolFunction(MEMORY_FAULT_ERROR));
+ 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,
- memory_fault_handler);
-#ifdef SIG_MEMORY_FAULT2
- undoably_install_low_level_interrupt_handler(SIG_MEMORY_FAULT2,
+ 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);
#endif
sig_stop_for_gc_handler);
#endif
#endif
-
SHOW("leaving os_install_interrupt_handlers()");
}
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
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 */
strerror(errno));
}
}
+
+/* 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
+_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
* 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
return NULL;
return copied_string(path);
}
-#else /* Not DARWIN or FREEBSD */
+#elif defined(LISP_FEATURE_NETBSD) || defined(LISP_FEATURE_OPENBSD)
+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 or OPENBSD */
char *
os_get_runtime_executable_path()
{
return NULL;
}
#endif
+
+#ifdef __OpenBSD__
+void
+openbsd_init()
+{
+ struct rlimit rl;
+
+ /* OpenBSD, like NetBSD, counts mmap()ed space against the
+ * process's data size limit. If the soft limit is lower than the
+ * hard limit then try to yank it up, this lets users in the
+ * "staff" login class run sbcl with a default /etc/login.conf
+ */
+ getrlimit (RLIMIT_DATA, &rl);
+ if (rl.rlim_cur < rl.rlim_max) {
+ rl.rlim_cur = rl.rlim_max;
+ if (setrlimit (RLIMIT_DATA, &rl) < 0) {
+ fprintf (stderr,
+ "RUNTIME WARNING: unable to raise process data size limit:\n\
+ %s.\n\
+The system may fail to start.\n",
+ strerror(errno));
+ }
+ }
+
+ /* Display a (hopefully) helpful warning if it looks like we won't
+ * be able to allocate enough memory. In testing I found that on
+ * my system at least, a minimum of 25M on top of the three space
+ * sizes was needed to start SBCL. Show a warning below 32M so as
+ * to leave a little breathing room.
+ */
+ getrlimit (RLIMIT_DATA, &rl);
+ if (dynamic_space_size + READ_ONLY_SPACE_SIZE + STATIC_SPACE_SIZE +
+ LINKAGE_TABLE_SPACE_SIZE + (32*1024*1024) > rl.rlim_cur)
+ fprintf (stderr,
+ "RUNTIME WARNING: data size resource limit may be too low,\n"
+ " try decreasing the dynamic space size with --dynamic-space-size\n");
+}
+
+/* OpenBSD's dlsym() relies on the gcc bulitin
+ * __builtin_return_address(0) returning an address in the
+ * executable's text segment, but when called from lisp it will return
+ * an address in the dynamic space. Work around this by calling this
+ * wrapper function instead. Note that tail-call optimization will
+ * defeat this, disable it by saving the dlsym() return value in a
+ * volatile variable.
+*/
+void *
+os_dlsym(void *handle, const char *symbol)
+{
+ void * volatile ret = dlsym(handle, symbol);
+ return ret;
+}
+
+#endif
projects / sbcl.git / blobdiff