static void netbsd_init();
#endif /* __NetBSD__ */
-void os_init(void)
+#ifdef __FreeBSD__
+#include <sys/sysctl.h>
+#include <osreldate.h>
+
+static void freebsd_init();
+#endif /* __FreeBSD__ */
+
+void
+os_init(char *argv[], char *envp[])
{
os_vm_page_size = getpagesize();
#ifdef __NetBSD__
netbsd_init();
#endif /* __NetBSD__ */
+#ifdef __FreeBSD__
+ freebsd_init();
+#endif /* __FreeBSD__ */
}
int *os_context_pc_addr(os_context_t *context)
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
/* (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
if (addr == MAP_FAILED) {
perror("mmap");
- lose("unexpected mmap(..) failure");
+ lose("unexpected mmap(..) failure\n");
}
return addr;
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
+ os_context_t *context = arch_os_get_context(&void_context);
+ 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
#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))
+ 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);
+ if (!interrupt_maybe_gc_int(signal, siginfo, 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
+ }
}
+
void
os_install_interrupt_handlers(void)
{
SHOW("os_install_interrupt_handlers()/bsd-os/defined(GENCGC)");
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,
+ memory_fault_handler);
+#endif
SHOW("leaving os_install_interrupt_handlers()");
}
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 */
}
}
#endif /* __NetBSD__ */
+
+#ifdef __FreeBSD__
+static void freebsd_init()
+{
+ /* 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 */
+}
+#endif /* __FreeBSD__ */
\f
/* threads */
return 1; /* success */
}
#endif
+
+#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()
+{
+ 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);
+}
+#else /* Not DARWIN or FREEBSD */
+char *
+os_get_runtime_executable_path()
+{
+ return NULL;
+}
+#endif
projects / sbcl.git / blobdiff