X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gdb%2Fgdbserver%2Flinux-i386-ipa.c;h=39afcaf2cfd6d852b7e4f356968702803c957d1a;hb=de6242d3075700ec4b73bdee583dc216f3a0b046;hp=cc09ef8d78909783ceca4d04b740987990abe87b;hpb=22049425ce40324139be82d9a6ec518c46b65815;p=deliverable%2Fbinutils-gdb.git

diff --git a/gdb/gdbserver/linux-i386-ipa.c b/gdb/gdbserver/linux-i386-ipa.c
index cc09ef8d78..39afcaf2cf 100644
--- a/gdb/gdbserver/linux-i386-ipa.c
+++ b/gdb/gdbserver/linux-i386-ipa.c
@@ -1,7 +1,7 @@
 /* GNU/Linux/x86 specific low level interface, for the in-process
    agent library for GDB.
 
-   Copyright (C) 2010-2017 Free Software Foundation, Inc.
+   Copyright (C) 2010-2018 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -22,6 +22,7 @@
 #include <sys/mman.h>
 #include "tracepoint.h"
 #include "linux-x86-tdesc.h"
+#include "common/x86-xstate.h"
 
 /* GDB register numbers.  */
 
@@ -244,31 +245,29 @@ initialize_fast_tracepoint_trampoline_buffer (void)
     }
 }
 
+/* Map the tdesc index to xcr0 mask.  */
+static uint64_t idx2mask[X86_TDESC_LAST] = {
+  X86_XSTATE_X87_MASK,
+  X86_XSTATE_SSE_MASK,
+  X86_XSTATE_AVX_MASK,
+  X86_XSTATE_MPX_MASK,
+  X86_XSTATE_AVX_MPX_MASK,
+  X86_XSTATE_AVX_AVX512_MASK,
+  X86_XSTATE_AVX_MPX_AVX512_PKU_MASK,
+};
+
 /* Return target_desc to use for IPA, given the tdesc index passed by
    gdbserver.  */
 
 const struct target_desc *
 get_ipa_tdesc (int idx)
 {
-  switch (idx)
+  if (idx >= X86_TDESC_LAST)
     {
-    case X86_TDESC_MMX:
-      return tdesc_i386_mmx_linux;
-    case X86_TDESC_SSE:
-      return tdesc_i386_linux;
-    case X86_TDESC_AVX:
-      return tdesc_i386_avx_linux;
-    case X86_TDESC_MPX:
-      return tdesc_i386_mpx_linux;
-    case X86_TDESC_AVX_MPX:
-      return tdesc_i386_avx_mpx_linux;
-    case X86_TDESC_AVX_MPX_AVX512:
-      return tdesc_i386_avx_mpx_avx512_linux;
-    default:
       internal_error (__FILE__, __LINE__,
 		      "unknown ipa tdesc index: %d", idx);
-      return tdesc_i386_linux;
     }
+  return i386_linux_read_description (idx2mask[idx]);
 }
 
 /* Allocate buffer for the jump pads.  On i386, we can reach an arbitrary
@@ -289,10 +288,7 @@ alloc_jump_pad_buffer (size_t size)
 void
 initialize_low_tracepoint (void)
 {
-  init_registers_i386_mmx_linux ();
-  init_registers_i386_linux ();
-  init_registers_i386_avx_linux ();
-  init_registers_i386_mpx_linux ();
-  init_registers_i386_avx_mpx_avx512_linux ();
   initialize_fast_tracepoint_trampoline_buffer ();
+  for (auto i = 0; i < X86_TDESC_LAST; i++)
+    i386_linux_read_description (idx2mask[i]);
 }