update to ida 7.6, add builds

idasdk76/dbg/arm_local_impl.cpp

@@ -0,0 +1,101 @@
+#include <idp.hpp>
+#include <dbg.hpp>
+#include <loader.hpp>
+#include <segregs.hpp>
+#include <segment.hpp>
+
+#include "deb_arm.hpp"
+
+#include "arm_regs.cpp"
+
+//--------------------------------------------------------------------------
+int is_arm_valid_bpt(bpttype_t type, ea_t ea, int len)
+{
+  switch ( type )
+  {
+    case BPT_SOFT:
+      if ( (ea & 1) != 0 )
+        return BPT_BAD_ADDR;
+      break;
+
+    case BPT_EXEC:
+      if ( (ea & 3) != 0 )
+        return BPT_BAD_ALIGN;
+      break;
+
+    default:
+      if ( (ea & 7) != 0 )
+        return BPT_BAD_ALIGN;
+      if ( len < 1 || len > 8 )
+        return BPT_BAD_LEN;
+      break;
+  }
+
+  return BPT_OK;
+}
+
+//--------------------------------------------------------------------------
+// if bit0 is set, ensure that thumb mode
+// if bit0 is clear, ensure that arm mode
+static void handle_arm_thumb_modes(ea_t ea)
+{
+  bool should_be_thumb = (ea & 1) != 0;
+  bool is_thumb = processor_t::get_code16_mode(ea);
+  if ( should_be_thumb != is_thumb )
+    processor_t::set_code16_mode(ea, should_be_thumb);
+}
+
+//--------------------------------------------------------------------------
+static easet_t pending_addresses;
+
+static ssize_t idaapi dbg_callback(void *, int code, va_list)
+{
+  // we apply thumb/arm switches when the process is suspended.
+  // it is quite late (normally we should do it as soon as the corresponding
+  // segment is created) but i did not manage to make it work.
+  // in the segm_added event the addresses are not enabled yet,
+  // so switching modes fails.
+  if ( code == dbg_suspend_process && !pending_addresses.empty() )
+  {
+    for ( easet_t::iterator p=pending_addresses.begin();
+          p != pending_addresses.end();
+          ++p )
+    {
+      handle_arm_thumb_modes(*p);
+    }
+    pending_addresses.clear();
+  }
+  return 0;
+}
+
+//--------------------------------------------------------------------------
+// For ARM processors the low bit means 1-thumb, 0-arm mode.
+// The following function goes over the address list and sets the mode
+// in IDA database according to bit0. It also resets bit0 for all addresses.
+void set_arm_thumb_modes(ea_t *addrs, int qty)
+{
+  for ( int i=0; i < qty; i++ )
+  {
+    ea_t ea = addrs[i];
+    segment_t *s = getseg(ea);
+    if ( s == NULL )
+      pending_addresses.insert(ea);
+    else
+      handle_arm_thumb_modes(ea);
+
+    addrs[i] = ea & ~1;
+  }
+}
+
+//--------------------------------------------------------------------------
+void processor_specific_init(void)
+{
+  hook_to_notification_point(HT_DBG, dbg_callback);
+}
+
+//--------------------------------------------------------------------------
+void processor_specific_term(void)
+{
+  unhook_from_notification_point(HT_DBG, dbg_callback);
+  pending_addresses.clear();
+}