* i386-tdep.h (struct gdbarch_tdep): Add members gregset,

gregset_reg_offset, gregset_num_regs, sizeof_gregset, fpregset,
sizeof_fpregset.
* i386-tdep.c: Include "regset.h".
(i386_supply_gregset): New function.
(i386_supply_fpregset): New function.
(i386_gdbarch_init): Initialze register set-related members of
TDEP.
* x86-64-tdep.c (x86_64_supply_fpregset): New function.
(x86_64_init_abi): Initialize TDEP->sizeof_fpregset.

1 files changed, 19 insertions, 0 deletions

diff --git a/gdb/x86-64-tdep.c b/gdb/x86-64-tdep.c
index ddba4db..d17ee8c 100644
--- a/gdb/x86-64-tdep.c
+++ b/gdb/x86-64-tdep.c
@@ -1203,12 +1203,31 @@ x86_64_frame_align (struct gdbarch *gdbarch, CORE_ADDR sp)
 {
   return sp & -(CORE_ADDR)16;
 }
+
+
+/* Supply register REGNUM from the floating-point register set REGSET
+   to register cache REGCACHE.  If REGNUM is -1, do this for all
+   registers in REGSET.  */
+
+static void
+x86_64_supply_fpregset (const struct regset *regset, struct regcache *regcache,
+			int regnum, const void *fpregs, size_t len)
+{
+  const struct gdbarch_tdep *tdep = regset->descr;
+
+  gdb_assert (len == tdep->sizeof_fpregset);
+  x86_64_supply_fxsave (regcache, regnum, fpregs);
+}
 
 void
 x86_64_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
 {
   struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
 
+  /* AMD64 generally uses `fxsave' instead of `fsave' for saving its
+     floating-point registers.  */
+  tdep->sizeof_fpregset = I387_SIZEOF_FXSAVE;
+
   /* AMD64 has an FPU and 16 SSE registers.  */
   tdep->st0_regnum = X86_64_ST0_REGNUM;
   tdep->num_xmm_regs = 16;