Removed dbg_set_serial_debug() - there is now only set_dprintf_enabled().
Disabled dbg_get_serial_debug(); it's only used temporarily in the keyboard device (and I removed its usage there, too). Added "continue", "exit", and "es" commands as in the Be kernel debugger (they will all exit the debugger and try to continue normal kernel execution). Reordered the sources so that public kernel API is together. Added a _user_debug_output() syscall (not yet activated) which dumps to the kernel's serial output. git-svn-id: file:///srv/svn/repos/haiku/trunk/current@5305 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler
+210
-189
@@ -26,22 +26,20 @@
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#include <ctype.h>
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int dbg_register_file[2][14]; /* XXXmpetit -- must be made generic */
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static bool serial_debug_on = false;
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static spinlock dbg_spinlock = 0;
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static int debugger_on_cpu = -1;
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struct debugger_command
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{
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struct debugger_command {
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struct debugger_command *next;
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int (*func)(int, char **);
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const char *name;
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const char *description;
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};
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static struct debugger_command *commands;
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int dbg_register_file[2][14]; /* XXXmpetit -- must be made generic */
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static bool sSerialDebugEnabled = false;
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static spinlock dbg_spinlock = 0;
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static int debugger_on_cpu = -1;
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static struct debugger_command *sCommands;
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#define LINE_BUF_SIZE 1024
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#define MAX_ARGS 16
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@@ -199,7 +197,7 @@ debug_parse_line(char *buf, char **argv, int *argc, int max_args)
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static void
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kernel_debugger_loop()
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kernel_debugger_loop(void)
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{
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int argc;
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struct debugger_command *cmd;
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@@ -212,7 +210,7 @@ kernel_debugger_loop()
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cmd = NULL;
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for(;;) {
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for (;;) {
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dprintf("kdebug> ");
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debug_read_line(line_buf[cur_line], LINE_BUF_SIZE);
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debug_parse_line(line_buf[cur_line], args, &argc, MAX_ARGS);
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@@ -226,27 +224,25 @@ kernel_debugger_loop()
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if (argc > 0) {
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// search command by name
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cmd = commands;
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cmd = sCommands;
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while (cmd != NULL) {
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if (strcmp(args[0], cmd->name) == 0)
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break;
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cmd = cmd->next;
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};
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};
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}
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}
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if (cmd == NULL)
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dprintf("unknown command, enter \"help\" to get a list of all supported commands\n");
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else {
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int rc;
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rc = cmd->func(argc, args);
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int rc = cmd->func(argc, args);
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if (rc == B_KDEBUG_QUIT)
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break; // okay, exit now.
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if (rc != B_KDEBUG_CONT)
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cmd = NULL; // forget last command executed...
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};
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}
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cur_line++;
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if (cur_line >= HISTORY_SIZE)
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@@ -257,18 +253,166 @@ kernel_debugger_loop()
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}
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void
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kernel_debugger(const char * message)
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char
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dbg_putch(char c)
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{
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arch_dbg_save_registers(&(dbg_register_file[smp_get_current_cpu()][0]));
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char ret;
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cpu_status state = disable_interrupts();
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acquire_spinlock(&dbg_spinlock);
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if (message) {
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dprintf(message);
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dprintf("\n");
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};
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if (sSerialDebugEnabled)
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ret = arch_dbg_con_putch(c);
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else
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ret = c;
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dprintf("Welcome to Kernel Debugging Land...\n");
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kernel_debugger_loop();
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release_spinlock(&dbg_spinlock);
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restore_interrupts(state);
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return ret;
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}
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void
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dbg_puts(const char *s)
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{
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cpu_status state = disable_interrupts();
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acquire_spinlock(&dbg_spinlock);
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if (sSerialDebugEnabled)
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arch_dbg_con_puts(s);
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release_spinlock(&dbg_spinlock);
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restore_interrupts(state);
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}
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static int
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cmd_reboot(int argc, char **argv)
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{
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reboot();
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return 0; // I'll be really suprised if this line ever run! ;-)
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}
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static int
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cmd_help(int argc, char **argv)
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{
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struct debugger_command *cmd;
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dprintf("debugger commands:\n");
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cmd = sCommands;
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while (cmd != NULL) {
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dprintf(" %-32s\t\t%s\n", cmd->name, cmd->description ? cmd->description : "");
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cmd = cmd->next;
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}
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return 0;
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}
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static int
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cmd_continue(int argc, char **argv)
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{
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return B_KDEBUG_QUIT;
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}
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int
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dbg_init(kernel_args *ka)
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{
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sCommands = NULL;
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return arch_dbg_con_init(ka);
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}
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int
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dbg_init2(kernel_args *ka)
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{
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add_debugger_command("help", &cmd_help, "List all debugger commands");
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add_debugger_command("reboot", &cmd_reboot, "Reboot the system");
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add_debugger_command("gdb", &cmd_gdb, "Connect to remote gdb");
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add_debugger_command("continue", &cmd_continue, "Leave kernel debugger");
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add_debugger_command("exit", &cmd_continue, NULL);
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add_debugger_command("es", &cmd_continue, NULL);
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return arch_dbg_init(ka);
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}
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// ToDo: this one is probably not needed
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#if 0
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bool
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dbg_get_serial_debug()
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{
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return sSerialDebugEnabled;
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}
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#endif
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// #pragma mark -
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// public API
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int
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add_debugger_command(char *name, int (*func)(int, char **), char *desc)
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{
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cpu_status state;
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struct debugger_command *cmd;
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cmd = (struct debugger_command *)malloc(sizeof(struct debugger_command));
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if (cmd == NULL)
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return ENOMEM;
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cmd->func = func;
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cmd->name = name;
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cmd->description = desc;
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state = disable_interrupts();
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acquire_spinlock(&dbg_spinlock);
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cmd->next = sCommands;
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sCommands = cmd;
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release_spinlock(&dbg_spinlock);
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restore_interrupts(state);
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return B_NO_ERROR;
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}
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int
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remove_debugger_command(char * name, int (*func)(int, char **))
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{
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struct debugger_command *cmd = sCommands;
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struct debugger_command *prev = NULL;
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cpu_status state;
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state = disable_interrupts();
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acquire_spinlock(&dbg_spinlock);
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while (cmd) {
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if (!strcmp(cmd->name, name) && cmd->func == func)
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break;
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prev = cmd;
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cmd = cmd->next;
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}
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if (cmd) {
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if (cmd == sCommands)
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sCommands = cmd->next;
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else
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prev->next = cmd->next;
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}
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release_spinlock(&dbg_spinlock);
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restore_interrupts(state);
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if (cmd) {
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free(cmd);
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return B_NO_ERROR;
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}
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return B_NAME_NOT_FOUND;
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}
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@@ -285,7 +429,7 @@ panic(const char *fmt, ...)
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// XXX should be renamed?
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kernel_startup = true;
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dbg_set_serial_debug(true);
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set_dprintf_enabled(true);
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state = disable_interrupts();
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@@ -309,13 +453,38 @@ panic(const char *fmt, ...)
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}
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void
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kernel_debugger(const char * message)
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{
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arch_dbg_save_registers(&(dbg_register_file[smp_get_current_cpu()][0]));
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if (message) {
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dprintf(message);
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dprintf("\n");
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};
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dprintf("Welcome to Kernel Debugging Land...\n");
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kernel_debugger_loop();
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}
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bool
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set_dprintf_enabled(bool newState)
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{
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bool oldState = sSerialDebugEnabled;
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sSerialDebugEnabled = newState;
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return oldState;
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}
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void
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dprintf(const char *fmt, ...)
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{
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va_list args;
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char temp[512];
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if (serial_debug_on) {
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if (sSerialDebugEnabled) {
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va_start(args, fmt);
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vsprintf(temp, fmt, args);
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va_end(args);
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@@ -325,169 +494,21 @@ dprintf(const char *fmt, ...)
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}
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char
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dbg_putch(char c)
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{
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char ret;
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cpu_status state = disable_interrupts();
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acquire_spinlock(&dbg_spinlock);
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if (serial_debug_on)
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ret = arch_dbg_con_putch(c);
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else
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ret = c;
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release_spinlock(&dbg_spinlock);
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restore_interrupts(state);
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return ret;
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}
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// #pragma mark -
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// userland syscalls
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void
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dbg_puts(const char *s)
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_user_debug_output(const char *userString)
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{
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cpu_status state = disable_interrupts();
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acquire_spinlock(&dbg_spinlock);
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char string[1024];
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if (serial_debug_on)
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arch_dbg_con_puts(s);
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if (!sSerialDebugEnabled)
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return;
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release_spinlock(&dbg_spinlock);
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restore_interrupts(state);
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if (!CHECK_USER_ADDRESS(userString)
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|| user_strlcpy(string, userString, sizeof(string)) < B_OK)
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return;
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dbg_puts(userString);
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}
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int
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add_debugger_command(char *name, int (*func)(int, char **), char *desc)
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{
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cpu_status state;
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struct debugger_command *cmd;
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cmd = (struct debugger_command *)malloc(sizeof(struct debugger_command));
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if (cmd == NULL)
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return ENOMEM;
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cmd->func = func;
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cmd->name = name;
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cmd->description = desc;
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state = disable_interrupts();
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acquire_spinlock(&dbg_spinlock);
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cmd->next = commands;
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commands = cmd;
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release_spinlock(&dbg_spinlock);
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restore_interrupts(state);
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return B_NO_ERROR;
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}
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int
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remove_debugger_command(char * name, int (*func)(int, char **))
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{
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struct debugger_command *cmd = commands;
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struct debugger_command *prev = NULL;
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cpu_status state;
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state = disable_interrupts();
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acquire_spinlock(&dbg_spinlock);
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while (cmd) {
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if (!strcmp(cmd->name, name) && cmd->func == func)
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break;
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prev = cmd;
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cmd = cmd->next;
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}
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if (cmd) {
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if (cmd == commands)
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commands = cmd->next;
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else
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prev->next = cmd->next;
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}
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release_spinlock(&dbg_spinlock);
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restore_interrupts(state);
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if (cmd) {
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free(cmd);
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return B_NO_ERROR;
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}
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return B_NAME_NOT_FOUND;
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}
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static int
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cmd_reboot(int argc, char **argv)
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{
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reboot();
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return 0; // I'll be really suprised if this line ever run! ;-)
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}
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static int
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cmd_help(int argc, char **argv)
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{
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struct debugger_command *cmd;
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dprintf("debugger commands:\n");
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cmd = commands;
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while (cmd != NULL) {
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dprintf(" %-32s\t\t%s\n", cmd->name, cmd->description);
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cmd = cmd->next;
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}
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return 0;
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}
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int
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dbg_init(kernel_args *ka)
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{
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commands = NULL;
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return arch_dbg_con_init(ka);
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}
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int
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dbg_init2(kernel_args *ka)
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{
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add_debugger_command("help", &cmd_help, "List all debugger commands");
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add_debugger_command("reboot", &cmd_reboot, "Reboot");
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add_debugger_command("gdb", &cmd_gdb, "Connect to remote gdb");
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return arch_dbg_init(ka);
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}
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bool
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dbg_set_serial_debug(bool new_val)
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{
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int temp = serial_debug_on;
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serial_debug_on = new_val;
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return temp;
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}
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bool
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dbg_get_serial_debug()
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{
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return serial_debug_on;
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}
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// Wrapper(s) for BeOS R5 compatibility:
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bool
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set_dprintf_enabled(bool new_state)
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{
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return dbg_set_serial_debug(new_state);
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}
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@@ -68,7 +68,7 @@ _start(kernel_args *oldka, int cpu_num)
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// setup debug output
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dbg_init(&ka);
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dbg_set_serial_debug(true);
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set_dprintf_enabled(true);
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dprintf("Welcome to kernel debugger output!\n");
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// init modules
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Reference in New Issue
Block a user