---
arch/powerpc/xmon/xmon.c | 58 ++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 58 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c
index 13c6e20..5c24f55 100644
--- a/arch/powerpc/xmon/xmon.c
+++ b/arch/powerpc/xmon/xmon.c
@@ -149,6 +149,7 @@ static int cpu_cmd(void);
static void csum(void);
static void bootcmds(void);
static void proccall(void);
+static void proclist(void);
void dump_segments(void);
static void symbol_lookup(void);
static void xmon_show_stack(unsigned long sp, unsigned long lr,
@@ -191,6 +192,24 @@ extern void xmon_leave(void);
|| ('A' <= (c) && (c) <= 'Z'))
#define isspace(c) (c == ' ' || c == '\t' || c == 10 || c == 13 || c == 0)
+/*
+ * Wrap a statement (typically function call) in setjmp to
+ * protect it from memory access errors. msg... are printf
+ * fmt+args used if error is trapped.
+ */
+#define XMON_PROTECT(stmt, msg...) \
+ if (setjmp(bus_error_jmp) != 0) { \
+ catch_memory_errors = 0; \
+ printf(msg); \
+ } else { \
+ catch_memory_errors = 1; \
+ sync(); \
+ stmt; \
+ sync(); \
+ __delay(200); \
+ catch_memory_errors = 0; \
+ }
+
static char *help_string = "\
Commands:\n\
b show breakpoints\n\
@@ -228,6 +247,7 @@ Commands:\n\
mz zero a block of memory\n\
mi show information about memory allocation\n\
p call a procedure\n\
+ P list processes/tasks\n\
r print registers\n\
s single step\n"
#ifdef CONFIG_SPU_BASE
@@ -947,6 +967,9 @@ cmds(struct pt_regs *excp)
case 'p':
proccall();
break;
+ case 'P':
+ proclist();
+ break;
#ifdef CONFIG_PPC_STD_MMU
case 'u':
dump_segments();
@@ -2450,6 +2473,41 @@ memzcan(void)
printf("%.8x\n", a - mskip);
}
+static void procshow(struct task_struct *tsk)
+{
+ char state;
+
+ state = (tsk->state == 0) ? 'R' :
+ (tsk->state < 0) ? 'U' :
+ (tsk->state & TASK_UNINTERRUPTIBLE) ? 'D' :
+ (tsk->state & TASK_STOPPED) ? 'T' :
+ (tsk->state & TASK_TRACED) ? 'C' :
+ (tsk->exit_state & EXIT_ZOMBIE) ? 'Z' :
+ (tsk->exit_state & EXIT_DEAD) ? 'E' :
+ (tsk->state & TASK_INTERRUPTIBLE) ? 'S' : '?';
+
+ printf("%p %016lx %6d %6d %c %2d %s\n", tsk,
+ tsk->thread.ksp,
+ tsk->pid, tsk->parent->pid,
+ state, task_thread_info(tsk)->cpu,
+ tsk->comm);
+}
+
+static void proclist(void)
+{
+ unsigned long tskv;
+ struct task_struct *tsk;
+
+ if (scanhex(&tskv)) {
+ tsk = (struct task_struct *)tskv;
+ XMON_PROTECT(procshow(tsk), "*** Error dumping task %p\n", tsk);
+ } else {
+ for_each_process(tsk) {
+ XMON_PROTECT(procshow(tsk), "*** Error dumping task
%p\n", tsk);
+ }
+ }
+}
+
static void proccall(void)
{
unsigned long args[8];
--
1.7.1
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