gdb: microblaze: delete useless stubs

[deliverable/binutils-gdb.git] / gdb / i386fbsd-tdep.c

diff --git a/gdb/i386fbsd-tdep.c b/gdb/i386fbsd-tdep.c
index ed417063643e26d2c375697910efc9a77ae30831..99e08cbdede7e8c41f58e196d7a88b7cae00b834 100644 (file)
--- a/gdb/i386fbsd-tdep.c
+++ b/gdb/i386fbsd-tdep.c
@@ -22,6 +22,9 @@
 #include "gdbcore.h"
 #include "osabi.h"
 #include "regcache.h"
+#include "regset.h"
+#include "i386fbsd-tdep.h"
+#include "x86-xstate.h"
 
 #include "i386-tdep.h"
 #include "i387-tdep.h"
@@ -235,6 +238,100 @@ static int i386fbsd_jmp_buf_reg_offset[] =
   0 * 4                                /* %eip */
 };
 
+/* Get XSAVE extended state xcr0 from core dump.  */
+
+uint64_t
+i386fbsd_core_read_xcr0 (bfd *abfd)
+{
+  asection *xstate = bfd_get_section_by_name (abfd, ".reg-xstate");
+  uint64_t xcr0;
+
+  if (xstate)
+    {
+      size_t size = bfd_section_size (abfd, xstate);
+
+      /* Check extended state size.  */
+      if (size < X86_XSTATE_AVX_SIZE)
+       xcr0 = X86_XSTATE_SSE_MASK;
+      else
+       {
+         char contents[8];
+
+         if (! bfd_get_section_contents (abfd, xstate, contents,
+                                         I386_FBSD_XSAVE_XCR0_OFFSET,
+                                         8))
+           {
+             warning (_("Couldn't read `xcr0' bytes from "
+                        "`.reg-xstate' section in core file."));
+             return 0;
+           }
+
+         xcr0 = bfd_get_64 (abfd, contents);
+       }
+    }
+  else
+    xcr0 = 0;
+
+  return xcr0;
+}
+
+/* Implement the core_read_description gdbarch method.  */
+
+static const struct target_desc *
+i386fbsd_core_read_description (struct gdbarch *gdbarch,
+                               struct target_ops *target,
+                               bfd *abfd)
+{
+  return i386_target_description (i386fbsd_core_read_xcr0 (abfd));
+}
+
+/* Similar to i386_supply_fpregset, but use XSAVE extended state.  */
+
+static void
+i386fbsd_supply_xstateregset (const struct regset *regset,
+                             struct regcache *regcache, int regnum,
+                             const void *xstateregs, size_t len)
+{
+  i387_supply_xsave (regcache, regnum, xstateregs);
+}
+
+/* Similar to i386_collect_fpregset, but use XSAVE extended state.  */
+
+static void
+i386fbsd_collect_xstateregset (const struct regset *regset,
+                              const struct regcache *regcache,
+                              int regnum, void *xstateregs, size_t len)
+{
+  i387_collect_xsave (regcache, regnum, xstateregs, 1);
+}
+
+/* Register set definitions.  */
+
+static const struct regset i386fbsd_xstateregset =
+  {
+    NULL,
+    i386fbsd_supply_xstateregset,
+    i386fbsd_collect_xstateregset
+  };
+
+/* Iterate over core file register note sections.  */
+
+static void
+i386fbsd_iterate_over_regset_sections (struct gdbarch *gdbarch,
+                                      iterate_over_regset_sections_cb *cb,
+                                      void *cb_data,
+                                      const struct regcache *regcache)
+{
+  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+
+  cb (".reg", tdep->sizeof_gregset, &i386_gregset, NULL, cb_data);
+  cb (".reg2", tdep->sizeof_fpregset, &i386_fpregset, NULL, cb_data);
+
+  if (tdep->xcr0 & X86_XSTATE_AVX)
+    cb (".reg-xstate", X86_XSTATE_SIZE(tdep->xcr0),
+       &i386fbsd_xstateregset, "XSAVE extended state", cb_data);
+}
+
 static void
 i386fbsd_supply_uthread (struct regcache *regcache,
                         int regnum, CORE_ADDR addr)
@@ -376,6 +473,15 @@ i386fbsd4_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
   /* FreeBSD 4.0 introduced a new `struct sigcontext'.  */
   tdep->sc_reg_offset = i386fbsd4_sc_reg_offset;
   tdep->sc_num_regs = ARRAY_SIZE (i386fbsd4_sc_reg_offset);
+
+  tdep->xsave_xcr0_offset = I386_FBSD_XSAVE_XCR0_OFFSET;
+
+  /* Iterate over core file register note sections.  */
+  set_gdbarch_iterate_over_regset_sections
+    (gdbarch, i386fbsd_iterate_over_regset_sections);
+
+  set_gdbarch_core_read_description (gdbarch,
+                                    i386fbsd_core_read_description);
 }
 
 \f