#include "arch.h"
#include "globals.h"
#include "interrupt.h"
+#include "interr.h"
#include "lispregs.h"
#include "sbcl.h"
+#include "thread.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"
-#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
-#endif
\f
-void
-os_init(void)
-{
- os_vm_page_size = getpagesize();
-}
+vm_size_t os_vm_page_size;
-/* 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)
+void os_init(void)
{
- 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_page_size = getpagesize();
}
-int *
-os_context_pc_addr(os_context_t *context)
+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 DARWIN
+ return &context->uc_mcontext->ss.srr0;
#else
#error unsupported BSD variant
#endif
}
-int *
-os_context_sp_addr(os_context_t *context)
-{
- return CONTEXT_ADDR_FROM_STEM(esp);
-}
-
sigset_t *
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__
+#if defined __FreeBSD__ || defined DARWIN
return &context->uc_sigmask;
#elif defined __OpenBSD__
return &context->sc_mask;
}
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) {
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((th->control_stack_start <= addr) && (addr < th->control_stack_end))
+ return 1;
+ if(in_range_p(addr, th->binding_stack_start, BINDING_STACK_SIZE))
+ return 1;
+ }
+ return 0;
}
\f
/*
* any OS-dependent special low-level handling for signals
*/
-#if !defined GENCGC
-
-void
-os_install_interrupt_handlers(void)
-{}
-
-#else
+#if defined LISP_FEATURE_GENCGC
/*
* The GENCGC needs to be hooked into whatever signal is raised for
void *fault_addr = siginfo->si_addr;
#elif defined __OpenBSD__
void *fault_addr = siginfo->si_addr;
+#elif defined DARWIN
+ void *fault_addr = siginfo->si_addr;
#else
#error unsupported BSD variant
#endif
- if (!gencgc_handle_wp_violation(fault_addr)) {
- interrupt_handle_now(signal, siginfo, void_context);
- }
+ os_context_t *context = arch_os_get_context(&void_context);
+ if (!gencgc_handle_wp_violation(fault_addr))
+ if(!handle_control_stack_guard_triggered(context,fault_addr))
+ /* FIXME is this context or void_context? not that it */
+ /* makes a difference currently except on linux/sparc */
+ interrupt_handle_now(signal, siginfo, void_context);
}
void
os_install_interrupt_handlers(void)
{
-#if defined __FreeBSD__
- interrupt_install_low_level_handler(SIGBUS, memory_fault_handler);
-#elif defined __OpenBSD__
- interrupt_install_low_level_handler(SIGSEGV, memory_fault_handler);
-#else
-#error unsupported BSD variant
-#endif
+ SHOW("os_install_interrupt_handlers()/bsd-os/defined(GENCGC)");
+ undoably_install_low_level_interrupt_handler(SIG_MEMORY_FAULT,
+ memory_fault_handler);
+ SHOW("leaving os_install_interrupt_handlers()");
}
-#endif /* !defined GENCGC */
-\f
-/*
- * Stuff to help work with dynamically linked libraries.
- *
- * FIXME: Remove this, and use the stub code in linux-stub.S
- * instead. */
-
-/* feh!
- *
- * DL_WORKAROUND enables "stubbing" of various functions from libc et
- * al. This is necessary when using dynamic linking in FreeBSD, as the
- * symbols in the dynamic libraries will not have known addresses (in
- * sbcl.nm).
- *
- * FIXME: This flag should be set in Config.bsd */
-#if defined __FreeBSD__
-/* FreeBSD can (and should!) use lunix-stubs.S instead of the
- * following code. That leaves exactly 0 uses of this code :-)
- * -- RAW 20001011 */
-#define DL_WORKAROUND 0
-#elif defined __OpenBSD__
-/* SBCL doesn't (yet?) work at all with dynamic libs on OpenBSD, so we
- * wouldn't get any use out of these stubs. -- WHN 20001001 */
-#define DL_WORKAROUND 0
-#else
-#error unsupported BSD variant
-#endif
+#else /* Currently Darwin only */
-#if DL_WORKAROUND
-#include <unistd.h>
-#include <dlfcn.h>
-#include <math.h>
-#include <sys/types.h>
-#include <dirent.h>
-#include <stdlib.h>
-#include <sys/stat.h>
-#include <time.h>
-#include <sys/resource.h>
-#include <signal.h>
-#include <fcntl.h>
-
-void *ldso_stub__dlopen(const char *path, int mode)
-{
- return dlopen(path, mode);
-}
-
-void *ldso_stub__dlsym(void *handle, const char *symbol)
-{
- return dlsym(handle, symbol);
-}
-
-const char *ldso_stub__dlerror(void)
-{
- return dlerror();
-}
-int ldso_stub__access(const char *path, int mode)
-{
- return access(path, mode);
-}
-
-double ldso_stub__acos(double x)
-{
- return acos(x);
-}
-
-double ldso_stub__acosh(double x)
-{
- return acosh(x);
-}
-
-double ldso_stub__asin(double x)
-{
- return asin(x);
-}
-
-double ldso_stub__asinh(double x)
-{
- return asin(x);
-}
-
-double ldso_stub__atanh(double x)
-{
- return atanh(x);
-}
-
-
-int ldso_stub__chdir(const char *path)
-{
- return chdir(path);
-}
-
-int ldso_stub__close(int d)
-{
- return close(d);
-}
-
-int ldso_stub__closedir(DIR *dirp)
-{
- return closedir(dirp);
-}
-
-double ldso_stub__cosh(double x)
-{
- return cosh(x);
-}
-
-void ldso_stub__exit(int status)
-{
- exit(status);
-}
-
-void ldso_stub__free(void *ptr)
-{
- free(ptr);
-}
-
-int ldso_stub__fstat(int fd, struct stat *sb)
-{
- return fstat(fd, sb);
-}
-
-int ldso_stub__fsync(int fd)
-{
- return fsync(fd);
-}
-
-char *ldso_stub__getenv(const char *name)
-{
- return getenv(name);
-}
-
-int ldso_stub__gethostname(char *name, int namelen)
-{
- return gethostname(name, namelen);
-}
-
-pid_t ldso_stub__getpid(void)
-{
- return getpid();
-}
-
-int ldso_stub__getrusage(int who, struct rusage *rusage)
-{
- return getrusage(who, rusage);
-}
-
-int ldso_stub__gettimeofday(struct timeval *tp, struct timezone *tzp)
-{
- return gettimeofday(tp, tzp);
-}
-
-uid_t ldso_stub__getuid(void)
-{
- return getuid();
-}
-
-char *ldso_stub__getwd(char *buf)
-{
- return getwd(buf);
-}
-
-double ldso_stub__hypot(double x, double y)
-{
- return hypot(x, y);
-}
-
-int ldso_stub__kill(pid_t pid, int sig)
-{
- return kill(pid, sig);
-}
-
-int ldso_stub__killpg(pid_t pgrp, int sig)
-{
- return killpg(pgrp, sig);
-}
-
-off_t ldso_stub__lseek(int fildes, off_t offset, int whence)
-{
- return lseek(fildes, offset, whence);
-}
-
-int ldso_stub__lstat(const char *path, struct stat *sb)
-{
- return lstat(path, sb);
-}
-
-void *ldso_stub__malloc(size_t size)
-{
- return malloc(size);
-}
-
-int ldso_stub__mkdir(const char *path, mode_t mode)
-{
- return mkdir(path, mode);
-}
-
-int ldso_stub__open(const char *path, int flags, mode_t mode)
-{
- return open(path, flags, mode);
-}
-
-DIR *ldso_stub__opendir(const char *filename)
-{
- return opendir(filename);
-}
-
-double ldso_stub__pow(double x, double y)
-{
- return pow(x, y);
-}
-
-ssize_t ldso_stub__read(int d, void *buf, size_t nbytes)
-{
- return read(d, buf, nbytes);
-}
-
-struct dirent *ldso_stub__readdir(DIR *dirp)
-{
- return readdir(dirp);
-}
-
-int ldso_stub__readlink(const char *path, char *buf, int bufsiz)
-{
- return readlink(path, buf, bufsiz);
-}
-
-int ldso_stub__rename(const char *from, const char *to)
-{
- return rename(from, to);
-}
-
-int ldso_stub__select(int nfds, fd_set *readfs, fd_set *writefds,
- fd_set *exceptfds, struct timeval *timeout)
-{
- return select(nfds, readfs, writefds, exceptfds, timeout);
-}
-
-int ldso_stub__sigblock(int mask)
-{
- return sigblock(mask);
-}
-
-int ldso_stub__sigpause(int sigmask)
-{
- return sigpause(sigmask);
-}
-
-int ldso_stub__sigsetmask(int mask)
-{
- return sigsetmask(mask);
-}
-
-double ldso_stub__sinh(double x)
-{
- return sin(x);
-}
-
-int ldso_stub__stat(const char *path, struct stat *sb)
+static void
+sigsegv_handler(int signal, siginfo_t *info, void* void_context)
{
- return stat(path, sb);
+ os_context_t *context = arch_os_get_context(&void_context);
+ unsigned int pc = (unsigned int *)(*os_context_pc_addr(context));
+ os_vm_address_t addr;
+
+ addr = arch_get_bad_addr(signal,info,context);
+ if(!interrupt_maybe_gc(signal, info, context))
+ if(!handle_control_stack_guard_triggered(context,addr))
+ interrupt_handle_now(signal, info, context);
}
-double ldso_stub__tanh(double x)
+void
+os_install_interrupt_handlers(void)
{
- return tanh(x);
+ SHOW("os_install_interrupt_handlers()/bsd-os/!defined(GENCGC)");
+ undoably_install_low_level_interrupt_handler(SIG_MEMORY_FAULT,
+ sigsegv_handler);
}
-/* tzname */
-
-int ldso_stub__unlink(const char *path)
-{
- return unlink(path);
-}
+#endif /* defined GENCGC */
+\f
+/* threads */
-ssize_t ldso_stub__write(int d, const void *buf, size_t nbytes)
-{
- return write(d, buf, nbytes);
+/* 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
+struct thread *arch_os_get_current_thread() {
+ return all_threads;
+}
+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 */
}
-
-pid_t ldso_stub__wait3(int *status, int options, struct rusage *rusage)
-{
- return wait3(status, options, rusage);
+int arch_os_thread_cleanup(struct thread *thread) {
+ return 1; /* success */
}
-
-#endif /* DL_WORKAROUND */
+#endif
projects / sbcl.git / blobdiff