#include <sys/time.h>
#include <sys/resource.h>
#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"
+
+/* 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 "search.h"
#include "purify.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 call_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 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", "Alias for 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
kill_cmd},
{"purify", "Purify. (Caveat purifier!)", purify_cmd},
{"print", "Print object at ADDRESS.", print_cmd},
- {"p", "Alias for 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;
lastaddr = addr;
}
-static void print_cmd(char **ptr)
+static void
+print_cmd(char **ptr)
{
lispobj obj = parse_lispobj(ptr);
print(obj);
}
-static void kill_cmd(char **ptr)
+static void
+kill_cmd(char **ptr)
{
kill(getpid(), parse_number(ptr));
}
-static void regs_cmd(char **ptr)
+static void
+regs_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__)
+#if !defined(__i386__)
printf("BSP\t=\t0x%08X\n", (unsigned long)current_binding_stack_pointer);
#endif
#ifdef __i386__
#endif
printf("DYNAMIC\t=\t0x%08lx\n", (unsigned long)DYNAMIC_SPACE_START);
-#if defined(ibmrt) || defined(__i386__)
+#if defined(__i386__)
printf("ALLOC\t=\t0x%08lx\n",
(unsigned long)SymbolValue(ALLOCATION_POINTER));
printf("TRIGGER\t=\t0x%08lx\n",
#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((long)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;
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 (TypeOf(obj) == type_SimpleFunHeader) {
+ print((long)addr | FUN_POINTER_LOWTAG);
+ } else if (lowtagof(obj) == OTHER_IMMEDIATE_0_LOWTAG ||
+ lowtagof(obj) == OTHER_IMMEDIATE_1_LOWTAG) {
+ print((lispobj)addr | OTHER_POINTER_LOWTAG);
+ } else {
print((lispobj)addr);
- if (count == -1)
+ } if (count == -1) {
return;
+ }
}
}
-static void call_cmd(char **ptr)
+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))) {
+ if (lowtagof(thing) == OTHER_POINTER_LOWTAG) {
+ switch (TypeOf(*(lispobj *)(thing-OTHER_POINTER_LOWTAG))) {
case type_SymbolHeader:
for (cons = SymbolValue(INITIAL_FDEFN_OBJECTS);
cons != NIL;
goto fdefn;
}
}
- printf("symbol 0x%08lx is undefined.\n", (long unsigned)thing);
+ printf("Symbol 0x%08lx is undefined.\n", (long unsigned)thing);
return;
case type_Fdefn:
fdefn:
- function = FDEFN(thing)->function;
+ function = FDEFN(thing)->fun;
if (function == NIL) {
- printf("fdefn 0x%08lx is undefined.\n", (long unsigned)thing);
+ printf("Fdefn 0x%08lx is undefined.\n", (long unsigned)thing);
return;
}
break;
return;
}
}
- else if (LowtagOf(thing) != type_FunctionPointer) {
+ else if (lowtagof(thing) != FUN_POINTER_LOWTAG) {
printf("0x%08lx is not a function pointer, symbol, or fdefn object.\n",
(long unsigned)thing);
return;
numargs = 0;
while (more_p(ptr)) {
if (numargs >= 3) {
- printf("too many arguments (no more than 3 allowed)\n");
+ printf("too many arguments (no more than 3 supported)\n");
return;
}
args[numargs++] = parse_lispobj(ptr);
result = funcall3(function, args[0], args[1], args[2]);
break;
default:
- lose("unsupported argument count");
+ lose("unsupported arg count made it past validity check?!");
}
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);
+ fgets(buf, sizeof(buf), ldb_in);
if (buf[0] == 'y' || buf[0] == 'Y' || buf[0] == '\n')
exit(0);
}
-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;
(unsigned long)(*os_context_pc_addr(context)));
}
-static void print_context_cmd(char **ptr)
+static void
+print_context_cmd(char **ptr)
{
int free;
if ((index >= 0) && (index < free)) {
printf("There are %d interrupt contexts.\n", free);
- printf("Printing context %d\n", index);
+ 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 no interrupt contexts!\n");
else {
printf("There are %d interrupt contexts.\n", free);
- printf("Printing context %d\n", free - 1);
+ printf("printing context %d\n", free - 1);
print_context(lisp_interrupt_contexts[free - 1]);
}
}
}
-static void backtrace_cmd(char **ptr)
+static void
+backtrace_cmd(char **ptr)
{
void backtrace(int frames);
int n;
backtrace(n);
}
-static void catchers_cmd(char **ptr)
+static void
+catchers_cmd(char **ptr)
{
struct catch_block *catch;
(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,
+ OTHER_POINTER_LOWTAG,
(unsigned long)catch->entry_pc);
#endif
brief_print((lispobj)catch->tag);
}
}
-static void grab_sigs_cmd(char **ptr)
+static void
+grab_sigs_cmd(char **ptr)
{
extern void sigint_init(void);
sigint_init();
}
-static FILE *devtty;
-static int devttyfd=-1;
-
-static void sub_monitor(void)
+static void
+sub_monitor(void)
{
struct cmd *cmd, *found;
char buf[256];
char *line, *ptr, *token;
int ambig;
- if(devtty==0) {
- devtty=fopen("/dev/tty","r+");
- devttyfd=fileno(devtty);
+ if (!ldb_in) {
+ ldb_in = fopen("/dev/tty","r+");
+ ldb_in_fd = fileno(ldb_in);
}
+
while (!done) {
printf("ldb> ");
fflush(stdout);
- line = fgets(buf, sizeof(buf), devtty);
+ line = fgets(buf, sizeof(buf), ldb_in);
if (line == NULL) {
- if (isatty(devttyfd)) {
+ if (isatty(ldb_in_fd)) {
putchar('\n');
continue;
}
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(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, "There's no LDB in this build; exiting.\n");
+ exit(1);
+#endif
+}
projects / sbcl.git / blobdiff