Update comments in amd64_linux_core_read_description

gdb:

2017-07-06  Yao Qi  <yao.qi@linaro.org>

	* amd64-linux-tdep.c (amd64_linux_core_read_description): Update
	comments.

diff --git a/gdb/amd64-linux-tdep.c b/gdb/amd64-linux-tdep.c
index 4ef0f783ab5c5ab149bd3b2ee38ee90db6717f8a..56298f659f97d2442488692250a6912849763711 100644 (file)
--- a/gdb/amd64-linux-tdep.c
+++ b/gdb/amd64-linux-tdep.c
@@ -1589,7 +1589,7 @@ amd64_linux_core_read_description (struct gdbarch *gdbarch,
     {
     case X86_XSTATE_AVX_MPX_AVX512_PKU_MASK:
       if (gdbarch_ptr_bit (gdbarch) == 32)
-         /* No MPX on x32, fallback to AVX-AVX512.  */
+       /* No MPX, PKU on x32, fallback to AVX-AVX512.  */
        return tdesc_x32_avx_avx512_linux;
       else
        return tdesc_amd64_avx_mpx_avx512_pku_linux;
@@ -1600,13 +1600,13 @@ amd64_linux_core_read_description (struct gdbarch *gdbarch,
        return tdesc_amd64_avx_avx512_linux;
     case X86_XSTATE_MPX_MASK:
       if (gdbarch_ptr_bit (gdbarch) == 32)
-         /* No MPX on x32, fallback to AVX-AVX512.  */
+       /* No MPX on x32, fallback to AVX.  */
        return tdesc_x32_avx_linux;
       else
        return tdesc_amd64_mpx_linux;
     case X86_XSTATE_AVX_MPX_MASK:
       if (gdbarch_ptr_bit (gdbarch) == 32)
-         /* No MPX on x32, fallback to AVX-AVX512.  */
+       /* No MPX on x32, fallback to AVX.  */
        return tdesc_x32_avx_linux;
       else
        return tdesc_amd64_avx_mpx_linux;