#include <stdio.h>
#include <sys/param.h>
#include <sys/file.h>
+#include <unistd.h>
+#include <utime.h>
+#include <assert.h>
+#include <errno.h>
+#include "sbcl.h"
#include "./signal.h"
#include "os.h"
#include "arch.h"
#include "interrupt.h"
#include "interr.h"
#include "lispregs.h"
-#include "sbcl.h"
+#include "thread.h"
+#include "runtime.h"
+#include "genesis/static-symbols.h"
+#include "genesis/fdefn.h"
#include <sys/types.h>
#include <signal.h>
/* #include <sys/sysinfo.h> */
-#include <sys/proc.h>
#include "validate.h"
-vm_size_t os_vm_page_size;
-
-#if defined GENCGC
-#include "gencgc.h"
+#if defined LISP_FEATURE_GENCGC
+#include "gencgc-internal.h"
#endif
-/* The different BSD variants have diverged in exactly where they
- * store signal context information, but at least they tend to use the
- * same stems to name the structure fields, so by using this macro we
- * can share a fair amount of code between different variants. */
-#if defined __FreeBSD__
-#define CONTEXT_ADDR_FROM_STEM(stem) &context->uc_mcontext.mc_ ## stem
-#elif defined __OpenBSD__
-#define CONTEXT_ADDR_FROM_STEM(stem) &context->sc_ ## stem
-#else
-#error unsupported BSD variant
+#if defined(LISP_FEATURE_SB_WTIMER) && !defined(LISP_FEATURE_DARWIN)
+# include <sys/event.h>
#endif
+
\f
-void
-os_init(void)
-{
- os_vm_page_size = getpagesize();
-}
-
-/* KLUDGE: There is strong family resemblance in the signal context
- * stuff in FreeBSD and OpenBSD, but in detail they're different in
- * almost every line of code. It would be nice to find some way to
- * factor out the commonality better; failing that, it might be best
- * just to split this generic-BSD code into one variant for each BSD. */
-
-int *
-os_context_register_addr(os_context_t *context, int offset)
-{
- switch(offset) {
- case 0:
- return CONTEXT_ADDR_FROM_STEM(eax);
- case 2:
- return CONTEXT_ADDR_FROM_STEM(ecx);
- case 4:
- return CONTEXT_ADDR_FROM_STEM(edx);
- case 6:
- return CONTEXT_ADDR_FROM_STEM(ebx);
- case 8:
- return CONTEXT_ADDR_FROM_STEM(esp);
- case 10:
- return CONTEXT_ADDR_FROM_STEM(ebp);
- case 12:
- return CONTEXT_ADDR_FROM_STEM(esi);
- case 14:
- return CONTEXT_ADDR_FROM_STEM(edi);
- default:
- return 0;
- }
-}
+os_vm_size_t os_vm_page_size;
-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);
-#else
-#error unsupported BSD variant
+#ifdef __NetBSD__
+#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>
+#if defined(LISP_FEATURE_SB_THREAD) && !defined(LISP_FEATURE_SB_PTHREAD_FUTEX)
+#include <sys/umtx.h>
#endif
-}
-int *
-os_context_sp_addr(os_context_t *context)
+static void freebsd_init();
+#endif /* __FreeBSD__ */
+
+#ifdef __OpenBSD__
+#include <sys/types.h>
+#include <sys/resource.h>
+#include <sys/stat.h>
+#include <sys/sysctl.h>
+#include <dlfcn.h>
+#ifdef LISP_FEATURE_X86
+#include <machine/cpu.h>
+#endif
+
+static void openbsd_init();
+#endif
+
+void
+os_init(char *argv[], char *envp[])
{
- return CONTEXT_ADDR_FROM_STEM(esp);
+ os_vm_page_size = BACKEND_PAGE_BYTES;
+
+#ifdef __NetBSD__
+ netbsd_init();
+#elif defined(__FreeBSD__)
+ freebsd_init();
+#elif defined(__OpenBSD__)
+ openbsd_init();
+#elif defined(LISP_FEATURE_DARWIN)
+ darwin_init();
+#endif
}
sigset_t *
/* (Unlike most of the other context fields that we access, the
* signal mask field is a field of the basic, outermost context
* struct itself both in FreeBSD 4.0 and in OpenBSD 2.6.) */
-#if defined __FreeBSD__
+#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(LISP_FEATURE_DARWIN)
return &context->uc_sigmask;
-#elif defined __OpenBSD__
+#elif defined (__OpenBSD__)
return &context->sc_mask;
#else
#error unsupported BSD variant
int flags = MAP_PRIVATE | MAP_ANON;
if (addr)
- flags |= MAP_FIXED;
+ flags |= MAP_FIXED;
addr = mmap(addr, len, OS_VM_PROT_ALL, flags, -1, 0);
if (addr == MAP_FAILED) {
- perror("mmap");
- return NULL;
+ perror("mmap");
+ return NULL;
}
return addr;
os_invalidate(os_vm_address_t addr, os_vm_size_t len)
{
if (munmap(addr, len) == -1)
- perror("munmap");
+ perror("munmap");
}
os_vm_address_t
os_map(int fd, int offset, os_vm_address_t addr, os_vm_size_t len)
{
addr = mmap(addr, len,
- OS_VM_PROT_ALL,
- MAP_PRIVATE | MAP_FILE | MAP_FIXED,
- fd, (off_t) offset);
+ OS_VM_PROT_ALL,
+ MAP_PRIVATE | MAP_FILE | MAP_FIXED,
+ fd, (off_t) offset);
if (addr == MAP_FAILED) {
- perror("mmap");
- lose("unexpected mmap(..) failure");
+ perror("mmap");
+ lose("unexpected mmap(..) failure\n");
}
return addr;
}
-/* FIXME: If this can be a no-op on BSD/x86, then it
- * deserves a more precise name.
- *
- * (Perhaps os_prepare_data_area_to_be_executed()?) */
-void
-os_flush_icache(os_vm_address_t address, os_vm_size_t length)
-{
-}
-
void
os_protect(os_vm_address_t address, os_vm_size_t length, os_vm_prot_t prot)
{
if (mprotect(address, length, prot) == -1) {
- perror("mprotect");
+ perror("mprotect");
}
}
\f
boolean
is_valid_lisp_addr(os_vm_address_t addr)
{
- return 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 )
- || in_range_p(addr, CONTROL_STACK_START , CONTROL_STACK_SIZE )
- || in_range_p(addr, BINDING_STACK_START , BINDING_STACK_SIZE );
+ 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))
+ 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))
+ return 1;
+ if (in_range_p(addr, (lispobj) th->binding_stack_start,
+ BINDING_STACK_SIZE))
+ return 1;
+ }
+ return 0;
}
\f
/*
* any OS-dependent special low-level handling for signals
*/
-#if !defined GENCGC
+#if defined LISP_FEATURE_GENCGC
+
+/*
+ * The GENCGC needs to be hooked into whatever signal is raised for
+ * page fault on this OS.
+ */
void
-os_install_interrupt_handlers(void)
+memory_fault_handler(int signal, siginfo_t *siginfo, os_context_t *context)
{
- SHOW("os_install_interrupt_handlers()/bsd-os/!defined(GENCGC)");
+ void *fault_addr = arch_get_bad_addr(signal, siginfo, context);
+
+#if defined(LISP_FEATURE_RESTORE_TLS_SEGMENT_REGISTER_FROM_CONTEXT)
+ FSHOW_SIGNAL((stderr, "/ TLS: restoring fs: %p in memory_fault_handler\n",
+ *CONTEXT_ADDR_FROM_STEM(fs)));
+ os_restore_tls_segment_register(context);
+#endif
+
+ FSHOW((stderr, "Memory fault at: %p, PC: %p\n", fault_addr, *os_context_pc_addr(context)));
+
+#ifdef LISP_FEATURE_SB_SAFEPOINT
+ if (!handle_safepoint_violation(context, fault_addr))
+#endif
+
+ if (!gencgc_handle_wp_violation(fault_addr))
+ if(!handle_guard_page_triggered(context,fault_addr))
+ lisp_memory_fault_error(context, fault_addr);
}
+#if defined(LISP_FEATURE_MACH_EXCEPTION_HANDLER)
+void
+mach_error_memory_fault_handler(int signal, siginfo_t *siginfo,
+ os_context_t *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);
+#endif
+
+#ifdef LISP_FEATURE_SB_THREAD
+# ifdef LISP_FEATURE_SB_SAFEPOINT
+# ifdef LISP_FEATURE_SB_THRUPTION
+ undoably_install_low_level_interrupt_handler(SIGPIPE, thruption_handler);
+# endif
+# else
+ undoably_install_low_level_interrupt_handler(SIG_STOP_FOR_GC,
+ sig_stop_for_gc_handler);
+# endif
+#endif
+ SHOW("leaving os_install_interrupt_handlers()");
+}
+
+#else /* Currently PPC/Darwin/Cheney only */
-/*
- * 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)
-{
- /* The way that we extract low level information like the fault
- * address is not specified by POSIX. */
-#if defined __FreeBSD__
- void *fault_addr = siginfo->si_addr;
-#elif defined __OpenBSD__
- void *fault_addr = siginfo->si_addr;
-#else
-#error unsupported BSD variant
+sigsegv_handler(int signal, siginfo_t *info, os_context_t *context)
+{
+#if 0
+ unsigned int pc = (unsigned int *)(*os_context_pc_addr(context));
#endif
- if (!gencgc_handle_wp_violation(fault_addr)) {
- interrupt_handle_now(signal, siginfo, void_context);
- }
+ os_vm_address_t 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);
}
+
void
os_install_interrupt_handlers(void)
{
- SHOW("os_install_interrupt_handlers()/bsd-os/defined(GENCGC)");
-#if defined __FreeBSD__
- undoably_install_low_level_interrupt_handler(SIGBUS,
- memory_fault_handler);
-#elif defined __OpenBSD__
- undoably_install_low_level_interrupt_handler(SIGSEGV,
- memory_fault_handler);
+ SHOW("os_install_interrupt_handlers()/bsd-os/!defined(GENCGC)");
+ undoably_install_low_level_interrupt_handler(SIG_MEMORY_FAULT,
+ sigsegv_handler);
+}
+
+#endif /* defined GENCGC */
+
+#ifdef __NetBSD__
+static void netbsd_init()
+{
+ struct rlimit rl;
+ int mib[2], osrev;
+ size_t len;
+
+ /* Are we running on a sufficiently functional kernel? */
+ mib[0] = CTL_KERN;
+ mib[1] = KERN_OSREV;
+
+ len = sizeof(osrev);
+ sysctl(mib, 2, &osrev, &len, NULL, 0);
+
+ /* If we're older than 2.0... */
+ if (osrev < 200000000) {
+ fprintf(stderr, "osrev = %d (needed at least 200000000).\n", osrev);
+ lose("NetBSD kernel too old to run sbcl.\n");
+ }
+
+ /* NetBSD counts mmap()ed space against the process's data size limit,
+ * so yank it up. This might be a nasty thing to do? */
+ getrlimit (RLIMIT_DATA, &rl);
+ /* Amazingly for such a new port, the provenance and meaning of
+ this number are unknown. It might just mean REALLY_BIG_LIMIT,
+ or possibly it should be calculated from dynamic space size.
+ -- CSR, 2004-04-08 */
+ rl.rlim_cur = 1073741824;
+ 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));
+ }
+}
+
+/* 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);
+}
+
+int
+_utime(const char *file, const struct utimbuf *timep)
+{
+ return utime(file, timep);
+}
+
+/* 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
+ * fast_bzero sse/base selection logic that's normally done in
+ * 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;
+ }
+ }
+#endif /* LISP_FEATURE_X86 */
+}
+
+#if defined(LISP_FEATURE_SB_THREAD) && defined(LISP_FEATURE_SB_FUTEX) \
+ && !defined(LISP_FEATURE_SB_PTHREAD_FUTEX)
+int
+futex_wait(int *lock_word, long oldval, long sec, unsigned long usec)
+{
+ struct timespec timeout;
+ int ret;
+
+ 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:
+ return 2;
+ 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
+/* defined in ppc-darwin-os.c instead */
+#elif defined(LISP_FEATURE_FREEBSD)
+#ifndef KERN_PROC_PATHNAME
+#define KERN_PROC_PATHNAME 12
+#endif
+
+char *
+os_get_runtime_executable_path(int external)
+{
+ char path[PATH_MAX + 1];
+
+ if (getosreldate() >= 600024) {
+ /* KERN_PROC_PATHNAME is available */
+ size_t len = PATH_MAX + 1;
+ int mib[4];
+
+ mib[0] = CTL_KERN;
+ mib[1] = KERN_PROC;
+ mib[2] = KERN_PROC_PATHNAME;
+ mib[3] = -1;
+ if (sysctl(mib, 4, &path, &len, NULL, 0) != 0)
+ return NULL;
+ } else {
+ int size;
+ size = readlink("/proc/curproc/file", path, sizeof(path) - 1);
+ if (size < 0)
+ return NULL;
+ path[size] = '\0';
+ }
+ if (strcmp(path, "unknown") == 0)
+ return NULL;
+ return copied_string(path);
+}
+#elif defined(LISP_FEATURE_NETBSD) || defined(LISP_FEATURE_OPENBSD)
+char *
+os_get_runtime_executable_path(int external)
+{
+ struct stat sb;
+ if (!external && stat("/proc/curproc/file", &sb) == 0)
+ return copied_string("/proc/curproc/file");
+ return NULL;
+}
+#else /* Not DARWIN or FREEBSD or NETBSD or OPENBSD */
+char *
+os_get_runtime_executable_path(int external)
+{
+ return NULL;
+}
+#endif
+
+#ifdef __OpenBSD__
+
+int openbsd_use_fxsave = 0;
+
+void
+openbsd_init()
+{
+#ifdef LISP_FEATURE_X86
+ int mib[2];
+ size_t size;
+#endif
+ /*
+ * Show a warning if it looks like the memory available after
+ * allocating the spaces won't be at least this much.
+ */
+#ifdef LISP_FEATURE_X86_64
+ const int wantfree = 64 * 1024 * 1024;
#else
-#error unsupported BSD variant
+ const int wantfree = 32 * 1024 * 1024;
#endif
- SHOW("leaving os_install_interrupt_handlers()");
+ struct rlimit rl;
+
+#ifdef LISP_FEATURE_X86
+ /* Save the machdep.osfxsr sysctl for use by os_restore_fp_control() */
+ mib[0] = CTL_MACHDEP;
+ mib[1] = CPU_OSFXSR;
+ size = sizeof (openbsd_use_fxsave);
+ sysctl(mib, 2, &openbsd_use_fxsave, &size, NULL, 0);
+#endif
+
+ /* 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" or "daemon" login classes run sbcl with larger dynamic
+ * space sizes.
+ */
+ 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.
+ */
+ getrlimit (RLIMIT_DATA, &rl);
+ if (dynamic_space_size + READ_ONLY_SPACE_SIZE + STATIC_SPACE_SIZE +
+ LINKAGE_TABLE_SPACE_SIZE + wantfree > 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"
+ " or raising the datasize or datasize-max limits in /etc/login.conf\n");
}
-#endif /* !defined GENCGC */
+/* 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
+
+#if defined(LISP_FEATURE_SB_WTIMER) && !defined(LISP_FEATURE_DARWIN)
+/*
+ * Waitable timer implementation for the safepoint-based (SIGALRM-free)
+ * timer facility using kqueue.
+ */
+int
+os_create_wtimer()
+{
+ int kq = kqueue();
+ if (kq == -1)
+ lose("os_create_wtimer: kqueue");
+ return kq;
+}
+
+int
+os_wait_for_wtimer(int kq)
+{
+ struct kevent ev;
+ int n;
+ if ( (n = kevent(kq, 0, 0, &ev, 1, 0)) == -1) {
+ if (errno != EINTR)
+ lose("os_wtimer_listen failed");
+ n = 0;
+ }
+ return n != 1;
+}
+
+void
+os_close_wtimer(int kq)
+{
+ if (close(kq) == -1)
+ lose("os_close_wtimer failed");
+}
+
+void
+os_set_wtimer(int kq, int sec, int nsec)
+{
+ long long msec
+ = ((long long) sec) * 1000 + (long long) (nsec+999999) / 1000000;
+ if (msec > INT_MAX) msec = INT_MAX;
+
+ struct kevent ev;
+ EV_SET(&ev, 1, EVFILT_TIMER, EV_ADD|EV_ENABLE|EV_ONESHOT, 0, (int)msec, 0);
+ if (kevent(kq, &ev, 1, 0, 0, 0) == -1)
+ perror("os_set_wtimer: kevent");
+}
+
+void
+os_cancel_wtimer(int kq)
+{
+ struct kevent ev;
+ EV_SET(&ev, 1, EVFILT_TIMER, EV_DISABLE, 0, 0, 0);
+ if (kevent(kq, &ev, 1, 0, 0, 0) == -1 && errno != ENOENT)
+ perror("os_cancel_wtimer: kevent");
+}
+#endif
projects / sbcl.git / blobdiff