X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fruntime%2Fbsd-os.c;h=a364d5a0b0ef5f69e5d441df7961b8b17e559da2;hb=c2ac5ba3964165ee2d21ccd4c6bf8bdc48e1a165;hp=f9cf70c8b92ca088847f2d21a3647e4980d40c48;hpb=5de74c72e5a9522c7fdd3dbb31a39641e9de8877;p=sbcl.git diff --git a/src/runtime/bsd-os.c b/src/runtime/bsd-os.c index f9cf70c..a364d5a 100644 --- a/src/runtime/bsd-os.c +++ b/src/runtime/bsd-os.c @@ -23,6 +23,7 @@ #include #include #include +#include #include "sbcl.h" #include "./signal.h" #include "os.h" @@ -40,6 +41,9 @@ #include /* #include */ #include "validate.h" +#if defined LISP_FEATURE_GENCGC +#include "gencgc-internal.h" +#endif os_vm_size_t os_vm_page_size; @@ -47,17 +51,30 @@ 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 -#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 + +static void openbsd_init(); +#endif + void os_init(char *argv[], char *envp[]) { @@ -65,26 +82,10 @@ 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 } @@ -165,14 +166,17 @@ 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; @@ -188,63 +192,93 @@ 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) + +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); - -#if defined(MEMORY_FAULT_DEBUG) - fprintf(stderr, "Memory fault at: %p, PC: %x\n", fault_addr, *os_context_pc_addr(context)); -#if defined(ARCH_HAS_STACK_POINTER) - fprintf(stderr, "Stack pointer: %x\n", *os_context_sp_addr(context)); #endif + +#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))); + 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, + 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, - memory_fault_handler); +#endif + +#ifdef LISP_FEATURE_SB_THREAD + undoably_install_low_level_interrupt_handler(SIG_INTERRUPT_THREAD, + interrupt_thread_handler); + undoably_install_low_level_interrupt_handler(SIG_STOP_FOR_GC, + sig_stop_for_gc_handler); +#ifdef SIG_RESUME_FROM_GC + undoably_install_low_level_interrupt_handler(SIG_RESUME_FROM_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) { 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 @@ -253,10 +287,6 @@ 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 */ @@ -297,11 +327,61 @@ 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); +} + +/* 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 @@ -309,42 +389,57 @@ 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 */ } -#endif /* __FreeBSD__ */ - -/* 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" -#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); -#endif - return 1; /* success */ +#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 arch_os_thread_cleanup(struct thread *thread) { - return 1; /* success */ + +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 */ @@ -380,10 +475,77 @@ os_get_runtime_executable_path() 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