#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 "runtime.h"
+#include "genesis/static-symbols.h"
+#include "genesis/fdefn.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;
+\f
+os_vm_size_t os_vm_page_size;
-#if defined GENCGC
-#include "gencgc.h"
-#endif
+#ifdef __NetBSD__
+#include <sys/resource.h>
+#include <sys/sysctl.h>
+#include <string.h>
+
+static void netbsd_init();
+#endif /* __NetBSD__ */
+
+#ifdef __FreeBSD__
+#include <sys/sysctl.h>
+#include <osreldate.h>
+
+static void freebsd_init();
+#endif /* __FreeBSD__ */
-/* 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_init(char *argv[], char *envp[])
{
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__ */
+#ifdef __FreeBSD__
+ freebsd_init();
+#endif /* __FreeBSD__ */
}
-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) && 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
#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(__NetBSD__) || defined(LISP_FEATURE_DARWIN)
return &context->uc_sigmask;
-#elif defined __OpenBSD__
+#elif defined (__OpenBSD__)
return &context->sc_mask;
#else
#error unsupported BSD variant
int flags = MAP_PRIVATE | MAP_ANON;
if (addr)
- flags |= MAP_FIXED;
+ flags |= MAP_FIXED;
addr = mmap(addr, len, OS_VM_PROT_ALL, flags, -1, 0);
if (addr == MAP_FAILED) {
- perror("mmap");
- return NULL;
+ perror("mmap");
+ return NULL;
}
return addr;
os_invalidate(os_vm_address_t addr, os_vm_size_t len)
{
if (munmap(addr, len) == -1)
- perror("munmap");
+ perror("munmap");
}
os_vm_address_t
os_map(int fd, int offset, os_vm_address_t addr, os_vm_size_t len)
{
addr = mmap(addr, len,
- OS_VM_PROT_ALL,
- MAP_PRIVATE | MAP_FILE | MAP_FIXED,
- fd, (off_t) offset);
+ OS_VM_PROT_ALL,
+ MAP_PRIVATE | MAP_FILE | MAP_FIXED,
+ fd, (off_t) offset);
if (addr == MAP_FAILED) {
- perror("mmap");
- lose("unexpected mmap(..) failure");
+ perror("mmap");
+ lose("unexpected mmap(..) failure\n");
}
return addr;
}
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) {
- perror("mprotect");
+ perror("mprotect");
}
}
\f
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
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__
- void *fault_addr = siginfo->si_addr;
-#elif defined __OpenBSD__
- void *fault_addr = siginfo->si_addr;
+ 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
+
+ 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
-#error unsupported BSD variant
+ 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
- if (!gencgc_handle_wp_violation(fault_addr)) {
- interrupt_handle_now(signal, siginfo, void_context);
- }
+#endif
+ }
}
+
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);
+ 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()");
+}
+
+#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_guard_page_triggered(context,addr))
+ interrupt_handle_now(signal, info, context);
+ /* Work around G5 bug; fix courtesy gbyers */
+ DARWIN_FIX_CONTEXT(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);
+#ifdef SIG_MEMORY_FAULT2
+ undoably_install_low_level_interrupt_handler(SIG_MEMORY_FAULT2,
+ sigsegv_handler);
+#endif
+}
+
+#endif /* defined GENCGC */
+
+#ifdef __NetBSD__
+static void netbsd_init()
+{
+ struct rlimit rl;
+ int mib[2], osrev;
+ size_t len;
+
+ /* Are we running on a sufficiently functional kernel? */
+ mib[0] = CTL_KERN;
+ mib[1] = KERN_OSREV;
+
+ len = sizeof(osrev);
+ sysctl(mib, 2, &osrev, &len, NULL, 0);
+
+ /* If we're older than 2.0... */
+ if (osrev < 200000000) {
+ fprintf(stderr, "osrev = %d (needed at least 200000000).\n", osrev);
+ lose("NetBSD kernel too old to run sbcl.\n");
+ }
+
+ /* 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);
+ /* Amazingly for such a new port, the provenance and meaning of
+ this number are unknown. It might just mean REALLY_BIG_LIMIT,
+ or possibly it should be calculated from dynamic space size.
+ -- CSR, 2004-04-08 */
+ rl.rlim_cur = 1073741824;
+ 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));
+ }
+}
+#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 */
+
+/* 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
-#error unsupported BSD variant
+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 */
}
+int arch_os_thread_cleanup(struct thread *thread) {
+ return 1; /* success */
+}
+#endif
-#endif /* !defined GENCGC */
+#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