#include <stdio.h>
#include <sys/param.h>
#include <sys/file.h>
+#include <unistd.h>
+#include <assert.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 <sys/types.h>
#include <signal.h>
/* #include <sys/sysinfo.h> */
#include "validate.h"
-vm_size_t os_vm_page_size;
-
-/* 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_size_t os_vm_page_size;
+
+#ifdef __NetBSD__
+#include <sys/resource.h>
+#include <string.h>
+
+static void netbsd_init();
+#endif /* __NetBSD__ */
+
+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;
- }
+#ifdef __NetBSD__
+ netbsd_init();
+#endif /* __NetBSD__ */
}
-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 __NetBSD__
+ return CONTEXT_ADDR_FROM_STEM(EIP);
+#elif defined LISP_FEATURE_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__ || __NetBSD__ || defined LISP_FEATURE_DARWIN
return &context->uc_sigmask;
#elif defined __OpenBSD__
return &context->sc_mask;
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)
{
{
/* The way that we extract low level information like the fault
* address is not specified by POSIX. */
-#if defined __FreeBSD__
+#if defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__)
void *fault_addr = siginfo->si_addr;
-#elif defined __OpenBSD__
+#elif defined LISP_FEATURE_DARWIN
void *fault_addr = siginfo->si_addr;
#else
#error unsupported BSD variant
#endif
+
os_context_t *context = arch_os_get_context(&void_context);
- if (!gencgc_handle_wp_violation(fault_addr))
+ 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 */
SHOW("leaving os_install_interrupt_handlers()");
}
-#else
-/* As of 2002.07.31, this configuration has never been tested */
+#else /* Currently Darwin only */
+
+static void
+sigsegv_handler(int signal, siginfo_t *info, void* void_context)
+{
+ 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);
+ /* Work around G5 bug; fix courtesy gbyers */
+ sigreturn(void_context);
+}
+
void
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);
}
#endif /* defined GENCGC */
+
+#ifdef __NetBSD__
+static void netbsd_init()
+{
+ struct rlimit rl;
+
+ /* 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);
+ rl.rlim_cur = 1073741824;
+ if (setrlimit (RLIMIT_DATA, &rl) < 0) {
+ fprintf (stderr, "RUNTIME WARNING: unable to raise process data size limit to 1GB (%s). The system may fail to start.\n",
+ strerror(errno));
+ }
+}
+#endif /* __NetBSD__ */
\f
/* threads */
#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
projects / sbcl.git / blobdiff