gdb: add target_ops::supports_displaced_step

[deliverable/binutils-gdb.git] / gdb / amd64-fbsd-tdep.c

diff --git a/gdb/amd64-fbsd-tdep.c b/gdb/amd64-fbsd-tdep.c
index 0047e2ce24efc7012850f556833a0d24e2cc39d6..7c3e33644e1083a11c03cfb83eb9bb96e90da78b 100644 (file)
--- a/gdb/amd64-fbsd-tdep.c
+++ b/gdb/amd64-fbsd-tdep.c
@@ -1,6 +1,6 @@
 /* Target-dependent code for FreeBSD/amd64.
 
-   Copyright (C) 2003-2017 Free Software Foundation, Inc.
+   Copyright (C) 2003-2020 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -25,11 +25,12 @@
 #include "osabi.h"
 #include "regset.h"
 #include "i386-fbsd-tdep.h"
-#include "x86-xstate.h"
+#include "gdbsupport/x86-xstate.h"
 
 #include "amd64-tdep.h"
 #include "fbsd-tdep.h"
 #include "solib-svr4.h"
+#include "inferior.h"
 
 /* Support for signal handlers.  */
 
@@ -156,7 +157,7 @@ amd64fbsd_core_read_description (struct gdbarch *gdbarch,
                                 struct target_ops *target,
                                 bfd *abfd)
 {
-  return amd64_target_description (i386fbsd_core_read_xcr0 (abfd));
+  return amd64_target_description (i386fbsd_core_read_xcr0 (abfd), true);
 }
 
 /* Similar to amd64_supply_fpregset, but use XSAVE extended state.  */
@@ -196,12 +197,35 @@ amd64fbsd_iterate_over_regset_sections (struct gdbarch *gdbarch,
 {
   struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
 
-  cb (".reg", tdep->sizeof_gregset, &i386_gregset, NULL, cb_data);
-  cb (".reg2", tdep->sizeof_fpregset, &amd64_fpregset, NULL, cb_data);
-  cb (".reg-xstate", X86_XSTATE_SIZE(tdep->xcr0),
+  cb (".reg", tdep->sizeof_gregset, tdep->sizeof_gregset, &i386_gregset, NULL,
+      cb_data);
+  cb (".reg2", tdep->sizeof_fpregset, tdep->sizeof_fpregset, &amd64_fpregset,
+      NULL, cb_data);
+  cb (".reg-xstate", X86_XSTATE_SIZE (tdep->xcr0), X86_XSTATE_SIZE (tdep->xcr0),
       &amd64fbsd_xstateregset, "XSAVE extended state", cb_data);
 }
 
+/* Implement the get_thread_local_address gdbarch method.  */
+
+static CORE_ADDR
+amd64fbsd_get_thread_local_address (struct gdbarch *gdbarch, ptid_t ptid,
+                                   CORE_ADDR lm_addr, CORE_ADDR offset)
+{
+  struct regcache *regcache;
+
+  regcache = get_thread_arch_regcache (current_inferior ()->process_target (),
+                                      ptid, gdbarch);
+
+  target_fetch_registers (regcache, AMD64_FSBASE_REGNUM);
+
+  ULONGEST fsbase;
+  if (regcache->cooked_read (AMD64_FSBASE_REGNUM, &fsbase) != REG_VALID)
+    error (_("Unable to fetch %%fsbase"));
+
+  CORE_ADDR dtv_addr = fsbase + gdbarch_ptr_bit (gdbarch) / 8;
+  return fbsd_get_thread_local_address (gdbarch, dtv_addr, lm_addr, offset);
+}
+
 static void
 amd64fbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
 {
@@ -218,7 +242,7 @@ amd64fbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
   tdep->sizeof_gregset = 22 * 8;
 
   amd64_init_abi (info, gdbarch,
-                 amd64_target_description (X86_XSTATE_SSE_MASK));
+                 amd64_target_description (X86_XSTATE_SSE_MASK, true));
 
   tdep->sigtramp_p = amd64fbsd_sigtramp_p;
   tdep->sigtramp_start = amd64fbsd_sigtramp_start_addr;
@@ -239,10 +263,16 @@ amd64fbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
   /* FreeBSD uses SVR4-style shared libraries.  */
   set_solib_svr4_fetch_link_map_offsets
     (gdbarch, svr4_lp64_fetch_link_map_offsets);
+
+  set_gdbarch_fetch_tls_load_module_address (gdbarch,
+                                            svr4_fetch_objfile_link_map);
+  set_gdbarch_get_thread_local_address (gdbarch,
+                                       amd64fbsd_get_thread_local_address);
 }
 
+void _initialize_amd64fbsd_tdep ();
 void
-_initialize_amd64fbsd_tdep (void)
+_initialize_amd64fbsd_tdep ()
 {
   gdbarch_register_osabi (bfd_arch_i386, bfd_mach_x86_64,
                          GDB_OSABI_FREEBSD, amd64fbsd_init_abi);