* files for more information.
*/
+#include "sbcl.h"
+
#include <stdio.h>
#include <sys/types.h>
#include <stdlib.h>
#include <setjmp.h>
#include <sys/time.h>
+#ifndef LISP_FEATURE_WIN32
#include <sys/resource.h>
+#endif
#include <signal.h>
+#include <unistd.h>
#include "runtime.h"
-#include "sbcl.h"
-#include "globals.h"
-#include "vars.h"
#include "parse.h"
-#include "os.h"
-#include "interrupt.h"
-#include "lispregs.h"
-#include "monitor.h"
+#include "vars.h"
+
+/* Almost all of this file can be skipped if we're not supporting LDB. */
+#if defined(LISP_FEATURE_SB_LDB)
+
#include "print.h"
#include "arch.h"
#include "interr.h"
#include "gc.h"
#include "search.h"
#include "purify.h"
+#include "globals.h"
+#include "lispregs.h"
+#include "interrupt.h"
+#include "thread.h"
+#include "genesis/static-symbols.h"
+#include "genesis/primitive-objects.h"
+
-extern boolean isatty(int fd);
+
+/* When we need to do command input, we use this stream, which is not
+ * in general stdin, so that things will "work" (as well as being
+ * thrown into ldb can be considered "working":-) even in a process
+ * where standard input has been redirected to a file or pipe.
+ *
+ * (We could set up output to go to a special ldb_out stream for the
+ * same reason, but there's been no pressure for that so far.)
+ *
+ * The enter-the-ldb-monitor function is responsible for setting up
+ * this stream. */
+static FILE *ldb_in = 0;
+static int ldb_in_fd = -1;
typedef void cmd(char **ptr);
-static cmd call_cmd, dump_cmd, print_cmd, quit, help;
+static cmd dump_cmd, print_cmd, quit_cmd, help_cmd;
static cmd flush_cmd, search_cmd, regs_cmd, exit_cmd;
static cmd print_context_cmd;
static cmd backtrace_cmd, purify_cmd, catchers_cmd;
static cmd grab_sigs_cmd;
+static cmd kill_cmd;
static struct cmd {
char *cmd, *help;
void (*fn)(char **ptr);
-} Cmds[] = {
- {"help", "Display this help information.", help},
- {"?", "help", help},
+} supported_cmds[] = {
+ {"help", "Display this help information.", help_cmd},
+ {"?", "(an alias for help)", help_cmd},
{"backtrace", "Backtrace up to N frames.", backtrace_cmd},
- {"call", "Call FUNCTION with ARG1, ARG2, ...", call_cmd},
{"catchers", "Print a list of all the active catchers.", catchers_cmd},
{"context", "Print interrupt context number I.", print_context_cmd},
{"dump", "Dump memory starting at ADDRESS for COUNT words.", dump_cmd},
- {"d", "dump", dump_cmd},
+ {"d", "(an alias for dump)", dump_cmd},
{"exit", "Exit this instance of the monitor.", exit_cmd},
{"flush", "Flush all temp variables.", flush_cmd},
/* (Classic CMU CL had a "gc" command here, which seems like a
* reasonable idea, but the code was stale (incompatible with
* gencgc) so I just flushed it. -- WHN 20000814 */
{"grab-signals", "Set the signal handlers to call LDB.", grab_sigs_cmd},
+ {"kill", "Kill ourself with signal number N (useful if running under gdb)",
+ kill_cmd},
{"purify", "Purify. (Caveat purifier!)", purify_cmd},
{"print", "Print object at ADDRESS.", print_cmd},
- {"p", "print", print_cmd},
- {"quit", "Quit.", quit},
- {"regs", "Display current Lisp regs.", regs_cmd},
+ {"p", "(an alias for print)", print_cmd},
+ {"quit", "Quit.", quit_cmd},
+ {"regs", "Display current Lisp registers.", regs_cmd},
{"search", "Search for TYPE starting at ADDRESS for a max of COUNT words.", search_cmd},
- {"s", "search", search_cmd},
+ {"s", "(an alias for search)", search_cmd},
{NULL, NULL, NULL}
};
static jmp_buf curbuf;
-static int visible(unsigned char c)
+static int
+visible(unsigned char c)
{
if (c < ' ' || c > '~')
return ' ';
return c;
}
-static void dump_cmd(char **ptr)
+static void
+dump_cmd(char **ptr)
{
static char *lastaddr = 0;
static int lastcount = 20;
}
while (count-- > 0) {
-#ifndef alpha
- printf("0x%08lX: ", (unsigned long) addr);
+#ifndef LISP_FEATURE_ALPHA
+ printf("0x%p: ", (os_vm_address_t) addr);
#else
printf("0x%08X: ", (u32) addr);
#endif
if (is_valid_lisp_addr((os_vm_address_t)addr)) {
-#ifndef alpha
+#ifndef LISP_FEATURE_ALPHA
unsigned long *lptr = (unsigned long *)addr;
#else
- u32 *lptr = (unsigned long *)addr;
+ u32 *lptr = (u32 *)addr;
#endif
unsigned short *sptr = (unsigned short *)addr;
unsigned char *cptr = (unsigned char *)addr;
- printf("0x%08lx 0x%04x 0x%04x 0x%02x 0x%02x 0x%02x 0x%02x %c%c%c%c\n", lptr[0], sptr[0], sptr[1], cptr[0], cptr[1], cptr[2], cptr[3], visible(cptr[0]), visible(cptr[1]), visible(cptr[2]), visible(cptr[3]));
+ printf("0x%08lx 0x%04x 0x%04x "
+ "0x%02x 0x%02x 0x%02x 0x%02x "
+ "%c%c"
+ "%c%c\n",
+ lptr[0], sptr[0], sptr[1],
+ cptr[0], cptr[1], cptr[2], cptr[3],
+ visible(cptr[0]), visible(cptr[1]),
+ visible(cptr[2]), visible(cptr[3]));
}
else
printf("invalid Lisp-level address\n");
lastaddr = addr;
}
-static void print_cmd(char **ptr)
+static void
+print_cmd(char **ptr)
{
lispobj obj = parse_lispobj(ptr);
print(obj);
}
-static void regs_cmd(char **ptr)
+static void
+kill_cmd(char **ptr)
{
- printf("CSP\t=\t0x%08lX\n", (unsigned long)current_control_stack_pointer);
- printf("FP\t=\t0x%08lX\n", (unsigned long)current_control_frame_pointer);
-#if !defined(ibmrt) && !defined(__i386__)
- printf("BSP\t=\t0x%08X\n", (unsigned long)current_binding_stack_pointer);
+#ifndef LISP_FEATURE_WIN32
+ kill(getpid(), parse_number(ptr));
#endif
-#ifdef __i386__
- printf("BSP\t=\t0x%08lx\n",
- (unsigned long)SymbolValue(BINDING_STACK_POINTER));
+}
+
+static void
+regs_cmd(char **ptr)
+{
+ struct thread *thread=arch_os_get_current_thread();
+
+ printf("CSP\t=\t0x%p ", access_control_stack_pointer(thread));
+#if !defined(LISP_FEATURE_X86) && !defined(LISP_FEATURE_X86_64)
+ printf("CFP\t=\t0x%p ", access_control_frame_pointer(thread));
#endif
- printf("DYNAMIC\t=\t0x%08lx\n", (unsigned long)DYNAMIC_SPACE_START);
-#if defined(ibmrt) || defined(__i386__)
- printf("ALLOC\t=\t0x%08lx\n",
- (unsigned long)SymbolValue(ALLOCATION_POINTER));
- printf("TRIGGER\t=\t0x%08lx\n",
- (unsigned long)SymbolValue(INTERNAL_GC_TRIGGER));
+#ifdef reg_BSP
+ printf("BSP\t=\t0x%p\n", get_binding_stack_pointer(thread));
#else
- printf("ALLOC\t=\t0x%08X\n",
- (unsigned long)dynamic_space_free_pointer);
- printf("TRIGGER\t=\t0x%08lx\n", (unsigned long)current_auto_gc_trigger);
+ /* printf("BSP\t=\t0x%08lx\n",
+ (unsigned long)SymbolValue(BINDING_STACK_POINTER)); */
+ printf("\n");
#endif
- printf("STATIC\t=\t0x%08lx\n",
- (unsigned long)SymbolValue(STATIC_SPACE_FREE_POINTER));
- printf("RDONLY\t=\t0x%08lx\n",
- (unsigned long)SymbolValue(READ_ONLY_SPACE_FREE_POINTER));
-#ifdef MIPS
- printf("FLAGS\t=\t0x%08x\n", current_flags_register);
+#ifdef LISP_FEATURE_GENCGC
+ /* printf("DYNAMIC\t=\t0x%08lx\n", DYNAMIC_SPACE_START); */
+#else
+ printf("STATIC\t=\t0x%p ",
+ SymbolValue(STATIC_SPACE_FREE_POINTER, thread));
+ printf("RDONLY\t=\t0x%08lx ",
+ (unsigned long)SymbolValue(READ_ONLY_SPACE_FREE_POINTER, thread));
+ printf("DYNAMIC\t=\t0x%08lx\n", (unsigned long)current_dynamic_space);
+#endif
+
+#ifdef reg_ALLOC
+ printf("ALLOC\t=\t0x%08lx\n", (unsigned long)dynamic_space_free_pointer);
+#else
+ printf("ALLOC\t=\t0x%08lx\n",
+ (unsigned long)SymbolValue(ALLOCATION_POINTER, thread));
+#endif
+
+#ifndef LISP_FEATURE_GENCGC
+ printf("TRIGGER\t=\t0x%08lx\n", (unsigned long)current_auto_gc_trigger);
#endif
}
-static void search_cmd(char **ptr)
+static void
+search_cmd(char **ptr)
{
static int lastval = 0, lastcount = 0;
static lispobj *start = 0, *end = 0;
if (more_p(ptr)) {
val = parse_number(ptr);
if (val < 0 || val > 0xff) {
- printf("Can only search for single bytes.\n");
+ printf("can only search for single bytes\n");
return;
}
if (more_p(ptr)) {
- addr = (lispobj *)PTR((long)parse_addr(ptr));
+ addr = (lispobj *)native_pointer((uword_t)parse_addr(ptr));
if (more_p(ptr)) {
count = parse_number(ptr);
}
else {
- /* Speced value and address, but no count. Only one. */
+ /* Specified value and address, but no count. Only one. */
count = -1;
}
}
else {
- /* Speced a value, but no address, so search same range. */
+ /* Specified a value, but no address, so search same range. */
addr = start;
count = lastcount;
}
}
else {
- /* Speced nothing, search again for val. */
+ /* Specified nothing, search again for val. */
val = lastval;
addr = end;
count = lastcount;
start = end = addr;
lastcount = count;
- printf("searching for 0x%x at 0x%08lX\n", val, (unsigned long)end);
+ printf("searching for 0x%x at 0x%p\n", val, (void*)(uword_t)end);
while (search_for_type(val, &end, &count)) {
- printf("found 0x%x at 0x%08lX:\n", val, (unsigned long)end);
+ printf("found 0x%x at 0x%p:\n", val, (void*)(uword_t)end);
obj = *end;
addr = end;
end += 2;
- if (TypeOf(obj) == type_FunctionHeader)
- print((long)addr | type_FunctionPointer);
- else if (LowtagOf(obj) == type_OtherImmediate0 || LowtagOf(obj) == type_OtherImmediate1)
- print((lispobj)addr | type_OtherPointer);
- else
+ if (widetag_of(obj) == SIMPLE_FUN_HEADER_WIDETAG) {
+ print((uword_t)addr | FUN_POINTER_LOWTAG);
+ } else if (other_immediate_lowtag_p(obj)) {
+ print((lispobj)addr | OTHER_POINTER_LOWTAG);
+ } else {
print((lispobj)addr);
- if (count == -1)
+ } if (count == -1) {
return;
+ }
}
}
-static void call_cmd(char **ptr)
-{
- lispobj thing = parse_lispobj(ptr), function, result = 0, cons, args[3];
- int numargs;
-
- if (LowtagOf(thing) == type_OtherPointer) {
- switch (TypeOf(*(lispobj *)(thing-type_OtherPointer))) {
- case type_SymbolHeader:
- for (cons = SymbolValue(INITIAL_FDEFN_OBJECTS);
- cons != NIL;
- cons = CONS(cons)->cdr) {
- if (FDEFN(CONS(cons)->car)->name == thing) {
- thing = CONS(cons)->car;
- goto fdefn;
- }
- }
- printf("symbol 0x%08lx is undefined.\n", (long unsigned)thing);
- return;
-
- case type_Fdefn:
- fdefn:
- function = FDEFN(thing)->function;
- if (function == NIL) {
- printf("fdefn 0x%08lx is undefined.\n", (long unsigned)thing);
- return;
- }
- break;
- default:
- printf("0x%08lx is not a function pointer, symbol, "
- "or fdefn object.\n",
- (long unsigned)thing);
- return;
- }
- }
- else if (LowtagOf(thing) != type_FunctionPointer) {
- printf("0x%08lx is not a function pointer, symbol, or fdefn object.\n",
- (long unsigned)thing);
- return;
- }
- else
- function = thing;
-
- numargs = 0;
- while (more_p(ptr)) {
- if (numargs >= 3) {
- printf("too many arguments (no more than 3 allowed)\n");
- return;
- }
- args[numargs++] = parse_lispobj(ptr);
- }
-
- switch (numargs) {
- case 0:
- result = funcall0(function);
- break;
- case 1:
- result = funcall1(function, args[0]);
- break;
- case 2:
- result = funcall2(function, args[0], args[1]);
- break;
- case 3:
- result = funcall3(function, args[0], args[1], args[2]);
- break;
- default:
- lose("unsupported argument count");
- }
+/* (There used to be call_cmd() here, to call known-at-cold-init-time
+ * Lisp functions from ldb, but it bitrotted and was deleted in
+ * sbcl-0.7.5.1. See older CVS versions if you want to resuscitate
+ * it.) */
- print(result);
-}
-
-static void flush_cmd(char **ptr)
+static void
+flush_cmd(char **ptr)
{
flush_vars();
}
-static void quit(char **ptr)
+static void
+quit_cmd(char **ptr)
{
char buf[10];
printf("Really quit? [y] ");
fflush(stdout);
- fgets(buf, sizeof(buf), stdin);
- if (buf[0] == 'y' || buf[0] == 'Y' || buf[0] == '\n')
- exit(0);
+ if (fgets(buf, sizeof(buf), ldb_in)) {
+ if (buf[0] == 'y' || buf[0] == 'Y' || buf[0] == '\n')
+ exit(1);
+ } else {
+ printf("\nUnable to read response, assuming y.\n");
+ exit(1);
+ }
}
-static void help(char **ptr)
+static void
+help_cmd(char **ptr)
{
struct cmd *cmd;
- for (cmd = Cmds; cmd->cmd != NULL; cmd++)
+ for (cmd = supported_cmds; cmd->cmd != NULL; cmd++)
if (cmd->help != NULL)
printf("%s\t%s\n", cmd->cmd, cmd->help);
}
static int done;
-static void exit_cmd(char **ptr)
+static void
+exit_cmd(char **ptr)
{
done = 1;
}
-static void purify_cmd(char **ptr)
+static void
+purify_cmd(char **ptr)
{
purify(NIL, NIL);
}
-static void print_context(os_context_t *context)
+static void
+print_context(os_context_t *context)
{
- int i;
+ int i;
- for (i = 0; i < NREGS; i++) {
- printf("%s:\t", lisp_register_names[i]);
-#ifdef __i386__
- brief_print((lispobj)(*os_context_register_addr(context,
- i*2)));
+ for (i = 0; i < NREGS; i++) {
+ printf("%s:\t", lisp_register_names[i]);
+#ifdef LISP_FEATURE_X86
+ brief_print((lispobj)(*os_context_register_addr(context,
+ i*2)));
#else
- brief_print((lispobj)(*os_context_register_addr(context,
- i)));
+ brief_print((lispobj)(*os_context_register_addr(context,i)));
+#endif
+ }
+#ifdef LISP_FEATURE_DARWIN
+ printf("DAR:\t\t 0x%08lx\n", (unsigned long)(*os_context_register_addr(context, 41)));
+ printf("DSISR:\t\t 0x%08lx\n", (unsigned long)(*os_context_register_addr(context, 42)));
#endif
- }
- printf("PC:\t\t 0x%08lx\n",
- (unsigned long)(*os_context_pc_addr(context)));
+ printf("PC:\t\t 0x%08lx\n",
+ (unsigned long)(*os_context_pc_addr(context)));
}
-static void print_context_cmd(char **ptr)
+static void
+print_context_cmd(char **ptr)
{
- int free;
+ int free_ici;
+ struct thread *thread=arch_os_get_current_thread();
- free = SymbolValue(FREE_INTERRUPT_CONTEXT_INDEX)>>2;
-
- if (more_p(ptr)) {
- int index;
-
- index = parse_number(ptr);
-
- if ((index >= 0) && (index < free)) {
- printf("There are %d interrupt contexts.\n", free);
- printf("Printing context %d\n", index);
- print_context(lisp_interrupt_contexts[index]);
- } else {
- printf("There aren't that many/few contexts.\n");
- printf("There are %d interrupt contexts.\n", free);
- }
- } else {
- if (free == 0)
- printf("There are no interrupt contexts!\n");
- else {
- printf("There are %d interrupt contexts.\n", free);
- printf("Printing context %d\n", free - 1);
- print_context(lisp_interrupt_contexts[free - 1]);
- }
- }
+ free_ici = fixnum_value(SymbolValue(FREE_INTERRUPT_CONTEXT_INDEX,thread));
+
+ if (more_p(ptr)) {
+ int index;
+
+ index = parse_number(ptr);
+
+ if ((index >= 0) && (index < free_ici)) {
+ printf("There are %d interrupt contexts.\n", free_ici);
+ printf("printing context %d\n", index);
+ print_context(thread->interrupt_contexts[index]);
+ } else {
+ printf("There aren't that many/few contexts.\n");
+ printf("There are %d interrupt contexts.\n", free_ici);
+ }
+ } else {
+ if (free_ici == 0)
+ printf("There are no interrupt contexts!\n");
+ else {
+ printf("There are %d interrupt contexts.\n", free_ici);
+ printf("printing context %d\n", free_ici - 1);
+ print_context(thread->interrupt_contexts[free_ici - 1]);
+ }
+ }
}
-static void backtrace_cmd(char **ptr)
+static void
+backtrace_cmd(char **ptr)
{
- void backtrace(int frames);
+ void lisp_backtrace(int frames);
int n;
if (more_p(ptr))
- n = parse_number(ptr);
+ n = parse_number(ptr);
else
- n = 100;
+ n = 100;
printf("Backtrace:\n");
- backtrace(n);
+ lisp_backtrace(n);
}
-static void catchers_cmd(char **ptr)
+static void
+catchers_cmd(char **ptr)
{
struct catch_block *catch;
+ struct thread *thread=arch_os_get_current_thread();
- catch = (struct catch_block *)SymbolValue(CURRENT_CATCH_BLOCK);
+ catch = (struct catch_block *)SymbolValue(CURRENT_CATCH_BLOCK,thread);
if (catch == NULL)
printf("There are no active catchers!\n");
else {
while (catch != NULL) {
-#ifndef __i386__
- printf("0x%08lX:\n\tuwp: 0x%08lX\n\tfp: 0x%08lX\n\tcode: 0x%08lx\n\tentry: 0x%08lx\n\ttag: ",
- (unsigned long)catch, (unsigned long)(catch->current_uwp),
- (unsigned long)(catch->current_cont),
- catch->current_code,
- catch->entry_pc);
+ printf("0x%08lX:\n\tuwp: 0x%08lX\n\tfp: 0x%08lX\n\t"
+ "code: 0x%08lX\n\tentry: 0x%08lX\n\ttag: ",
+ (uword_t)catch,
+ (uword_t)(catch->current_uwp),
+ (uword_t)(catch->current_cont),
+#if defined(LISP_FEATURE_X86) || defined(LISP_FEATURE_X86_64)
+ (uword_t)component_ptr_from_pc((void*)catch->entry_pc)
+ + OTHER_POINTER_LOWTAG,
#else
- printf("0x%08lX:\n\tuwp: 0x%08lX\n\tfp: 0x%08lX\n\tcode: 0x%08lx\n\tentry: 0x%08lx\n\ttag: ",
- (unsigned long)catch, (unsigned long)(catch->current_uwp),
- (unsigned long)(catch->current_cont),
- (unsigned long)component_ptr_from_pc((void*)catch->entry_pc) +
- type_OtherPointer,
- (unsigned long)catch->entry_pc);
+ (uword_t)(catch->current_code),
#endif
+ (uword_t)(catch->entry_pc));
brief_print((lispobj)catch->tag);
catch = catch->previous_catch;
}
}
}
-static void grab_sigs_cmd(char **ptr)
+static void
+grab_sigs_cmd(char **ptr)
{
extern void sigint_init(void);
sigint_init();
}
-static void sub_monitor(void)
+static void
+sub_monitor(void)
{
struct cmd *cmd, *found;
char buf[256];
char *line, *ptr, *token;
int ambig;
+ if (!ldb_in) {
+#ifndef LISP_FEATURE_WIN32
+ ldb_in = fopen("/dev/tty","r+");
+ if (ldb_in == NULL) {
+ perror("Error opening /dev/tty");
+ ldb_in = stdin;
+ }
+#else
+ ldb_in = stdin;
+#endif
+ ldb_in_fd = fileno(ldb_in);
+ }
+
while (!done) {
printf("ldb> ");
fflush(stdout);
- line = fgets(buf, sizeof(buf), stdin);
+ line = fgets(buf, sizeof(buf), ldb_in);
if (line == NULL) {
- if (isatty(0)) {
- putchar('\n');
- continue;
- }
- else {
- fprintf(stderr, "\nEOF on something other than a tty.\n");
- exit(0);
- }
- }
+ exit(1);
+ }
ptr = line;
if ((token = parse_token(&ptr)) == NULL)
continue;
ambig = 0;
found = NULL;
- for (cmd = Cmds; cmd->cmd != NULL; cmd++) {
+ for (cmd = supported_cmds; cmd->cmd != NULL; cmd++) {
if (strcmp(token, cmd->cmd) == 0) {
found = cmd;
ambig = 0;
}
}
-void ldb_monitor()
+void
+ldb_monitor()
{
jmp_buf oldbuf;
bcopy(curbuf, oldbuf, sizeof(oldbuf));
- printf("LDB monitor\n");
+ printf("Welcome to LDB, a low-level debugger for the Lisp runtime environment.\n");
setjmp(curbuf);
bcopy(oldbuf, curbuf, sizeof(curbuf));
}
-void throw_to_monitor()
+void
+throw_to_monitor()
{
longjmp(curbuf, 1);
}
+
+#endif /* defined(LISP_FEATURE_SB_LDB) */
+
+/* what we do when things go badly wrong at a low level */
+void
+monitor_or_something()
+{
+#if defined(LISP_FEATURE_SB_LDB)
+ ldb_monitor();
+#else
+ fprintf(stderr,
+"The system is too badly corrupted or confused to continue at the Lisp\n\
+level. If the system had been compiled with the SB-LDB feature, we'd drop\n\
+into the LDB low-level debugger now. But there's no LDB in this build, so\n\
+we can't really do anything but just exit, sorry.\n");
+ exit(1);
+#endif
+}
projects / sbcl.git / blobdiff