target: lakemon: implement assert_reset and deassert_reset

[openocd] / src / target / x86_32_common.c

diff --git a/src/target/x86_32_common.c b/src/target/x86_32_common.c
index 34f92eaca81d2deff7f1ef833854757f6c47aa9a..0d87ba5a2eb223ab393e621ef277a9a3384cdfd3 100644 (file)
--- a/src/target/x86_32_common.c
+++ b/src/target/x86_32_common.c
@@ -1260,6 +1260,38 @@ static int unset_watchpoint(struct target *t, struct watchpoint *wp)
        return ERROR_OK;
 }
 
+/* after reset breakpoints and watchpoints in memory are not valid anymore and
+ * debug registers are cleared.
+ * we can't afford to remove sw breakpoints using the default methods as the
+ * memory doesn't have the same layout yet and an access might crash the target,
+ * so we just clear the openocd breakpoints structures.
+ */
+void x86_32_common_reset_breakpoints_watchpoints(struct target *t)
+{
+       struct x86_32_common *x86_32 = target_to_x86_32(t);
+       struct x86_32_dbg_reg *debug_reg_list = x86_32->hw_break_list;
+       struct breakpoint *next_b;
+       struct watchpoint *next_w;
+
+       while (t->breakpoints) {
+               next_b = t->breakpoints->next;
+               free(t->breakpoints->orig_instr);
+               free(t->breakpoints);
+               t->breakpoints = next_b;
+       }
+
+       while (t->watchpoints) {
+               next_w = t->watchpoints->next;
+               free(t->watchpoints);
+               t->watchpoints = next_w;
+       }
+
+       for (int i = 0; i < x86_32->num_hw_bpoints; i++) {
+               debug_reg_list[i].used = 0;
+               debug_reg_list[i].bp_value = 0;
+       }
+}
+
 static int read_hw_reg_to_cache(struct target *t, int num)
 {
        uint32_t reg_value;