#include <asm/pgtable.h>
#include <asm/mmu.h>
#include <asm/mmu_context.h>
+#include <asm/plpar_wrappers.h>
#include <asm/cputable.h>
#include <asm/rtas.h>
#include <asm/sstep.h>
#include <asm/paca.h>
#endif
-#if defined(CONFIG_PPC_SPLPAR)
-#include <asm/plpar_wrappers.h>
-#else
-static inline long plapr_set_ciabr(unsigned long ciabr) {return 0; };
-#endif
-
#include "nonstdio.h"
#include "dis-asm.h"
mtspr(SPRN_CIABR, ciabr);
return;
}
- plapr_set_ciabr(ciabr);
+ plpar_set_ciabr(ciabr);
}
/**
return 1;
}
+/* Force enable xmon if not already enabled */
+static inline void force_enable_xmon(void)
+{
+ /* Enable xmon hooks if needed */
+ if (!xmon_on) {
+ printf("xmon: Enabling debugger hooks\n");
+ xmon_on = 1;
+ }
+}
+
static char *breakpoint_help_string =
"Breakpoint command usage:\n"
"b show breakpoints\n"
static const char badaddr[] = "Only kernel addresses are permitted for breakpoints\n";
int mode;
case 'd': /* bd - hardware data breakpoint */
+ if (!ppc_breakpoint_available()) {
+ printf("Hardware data breakpoint not supported on this cpu\n");
+ break;
+ }
mode = 7;
cmd = inchar();
if (cmd == 'r')
dabr.address &= ~HW_BRK_TYPE_DABR;
dabr.enabled = mode | BP_DABR;
}
+
+ force_enable_xmon();
break;
case 'i': /* bi - hardware instr breakpoint */
if (bp != NULL) {
bp->enabled |= BP_CIABR;
iabr = bp;
+ force_enable_xmon();
}
break;
#endif
if (!check_bp_loc(a))
break;
bp = new_breakpoint(a);
- if (bp != NULL)
+ if (bp != NULL) {
bp->enabled |= BP_TRAP;
+ force_enable_xmon();
+ }
break;
}
}
#endif /* CONFIG_MAGIC_SYSRQ */
#ifdef CONFIG_DEBUG_FS
+static void clear_all_bpt(void)
+{
+ int i;
+
+ /* clear/unpatch all breakpoints */
+ remove_bpts();
+ remove_cpu_bpts();
+
+ /* Disable all breakpoints */
+ for (i = 0; i < NBPTS; ++i)
+ bpts[i].enabled = 0;
+
+ /* Clear any data or iabr breakpoints */
+ if (iabr || dabr.enabled) {
+ iabr = NULL;
+ dabr.enabled = 0;
+ }
+
+ printf("xmon: All breakpoints cleared\n");
+}
+
static int xmon_dbgfs_set(void *data, u64 val)
{
xmon_on = !!val;
xmon_init(xmon_on);
+ /* make sure all breakpoints removed when disabling */
+ if (!xmon_on)
+ clear_all_bpt();
return 0;
}