X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fruntime%2Fbsd-os.c;h=4c08b9798a733632d92c32b3eb35abc4c8d247e0;hb=0f3a5f2e8886d18d0b4f6485c38a42be629422ae;hp=a74734b38dae7bf93cd5f5a1c195ecb779d6ed2f;hpb=8735f137435f1a90c05df67a03e48602a79572f8;p=sbcl.git diff --git a/src/runtime/bsd-os.c b/src/runtime/bsd-os.c index a74734b..4c08b97 100644 --- a/src/runtime/bsd-os.c +++ b/src/runtime/bsd-os.c @@ -22,7 +22,9 @@ #include #include #include +#include #include +#include #include "sbcl.h" #include "./signal.h" #include "os.h" @@ -40,6 +42,14 @@ #include /* #include */ #include "validate.h" +#if defined LISP_FEATURE_GENCGC +#include "gencgc-internal.h" +#endif + +#if defined(LISP_FEATURE_SB_WTIMER) && !defined(LISP_FEATURE_DARWIN) +# include +#endif + os_vm_size_t os_vm_page_size; @@ -47,32 +57,47 @@ os_vm_size_t os_vm_page_size; #include #include #include - +#include /* For the stat-family wrappers. */ +#include /* For the opendir()/readdir() wrappers */ +#include /* For the socket() wrapper */ static void netbsd_init(); #endif /* __NetBSD__ */ +#ifdef __FreeBSD__ +#include +#if defined(LISP_FEATURE_SB_THREAD) && !defined(LISP_FEATURE_SB_PTHREAD_FUTEX) +#include +#endif + +static void freebsd_init(); +#endif /* __FreeBSD__ */ + +#ifdef __OpenBSD__ +#include +#include +#include +#include +#include +#ifdef LISP_FEATURE_X86 +#include +#endif + +static void openbsd_init(); +#endif + void os_init(char *argv[], char *envp[]) { - os_vm_page_size = getpagesize(); + os_vm_page_size = BACKEND_PAGE_BYTES; #ifdef __NetBSD__ netbsd_init(); -#endif /* __NetBSD__ */ -} - -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 - return &context->uc_mcontext->ss.srr0; -#else -#error unsupported BSD variant +#elif defined(__FreeBSD__) + freebsd_init(); +#elif defined(__OpenBSD__) + openbsd_init(); +#elif defined(LISP_FEATURE_DARWIN) + darwin_init(); #endif } @@ -82,9 +107,9 @@ os_context_sigmask_addr(os_context_t *context) /* (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__ || __NetBSD__ || defined LISP_FEATURE_DARWIN +#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 @@ -153,14 +178,17 @@ 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((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; @@ -176,56 +204,79 @@ 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 -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__) || defined(__OpenBSD__) || defined(__NetBSD__) - void *fault_addr = siginfo->si_addr; -#elif defined LISP_FEATURE_DARWIN - void *fault_addr = siginfo->si_addr; -#else -#error unsupported BSD variant + +void +memory_fault_handler(int signal, siginfo_t *siginfo, os_context_t *context) +{ + 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 - os_context_t *context = arch_os_get_context(&void_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)); -#else - interrupt_handle_now(signal, siginfo, context); -#endif + 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, - 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 + +#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 Darwin only */ +#else /* Currently PPC/Darwin/Cheney only */ static void -sigsegv_handler(int signal, siginfo_t *info, void* void_context) +sigsegv_handler(int signal, siginfo_t *info, os_context_t *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 @@ -234,10 +285,6 @@ 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 */ @@ -278,28 +325,307 @@ 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__ */ - -/* threads */ -/* no threading in any *BSD variant on any CPU (yet? in sbcl-0.8.0 anyway) */ -#ifdef LISP_FEATURE_SB_THREAD -#error "Define threading support functions" +#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 -int arch_os_thread_init(struct thread *thread) { - stack_t sigstack; -#ifdef LISP_FEATURE_C_STACK_IS_CONTROL_STACK - /* Signal handlers are run on the control stack, so if it is exhausted - * we had better use an alternate stack for whatever signal tells us - * we've exhausted it */ - sigstack.ss_sp=((void *) thread)+dynamic_values_bytes; - sigstack.ss_flags=0; - sigstack.ss_size = 32*SIGSTKSZ; - sigaltstack(&sigstack,0); + const int wantfree = 32 * 1024 * 1024; +#endif + 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 - return 1; /* success */ + + /* 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"); } -int arch_os_thread_cleanup(struct thread *thread) { - return 1; /* success */ + +/* 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