[PATCH V2 1/1] amd64-linux: expose system register FS_BASE and GS_BASE for Linux.
Luis Machado
lgustavo@codesourcery.com
Mon Jan 9 20:35:00 GMT 2017
On 01/05/2017 09:53 AM, Walfred Tedeschi wrote:
> This patch allows examination of the registers FS_BASE and GS_BASE
> for Linux Systems running on 64bit. Tests for simple read and write
> of the new registers is also added with this patch.
>
> Tests were performed on:
> x86_64 RHEL 5.3 - For the older ptrace calls.
> x86_64 Ubuntu 16.10 - For the new ptrace calls.
>
>
> Changes from Richard's version:
> * Added support for remote.
> * Added test cases.
>
>
> Change requested by John Baldwin, as reported at:
>
> * Moved initialization of fs_base and gs_base from amd64-linux-tdep.c
> to amd64-tdep.c
>
> Changes after Pedro's comments:
> * Moved usage of "HAVE_STRUCT_USER_REGS_STRUCT_FS_BASE" to native
> files.
> * Double checked indentation on "gdb/features/Makefile".
> * Removed hard coded register number from "64bit-segments.xml"
> * Register size was kept as same as orig_rax.
> * Removed spurious function from the test sample.
> * Test is using prepare_for_testing.
>
> Additional comment on register ordering:
> orig_rax is the last register added there is a special macro that defines
> it in this way. On gdbserver side it is defined in the middle of
> the registers and stays there always for compatibility.
>
> I have added the two new registers just after the orig_rax. This causes
> that they will be in the gdbserver side just after orig_rax and in gdb
>
> I still can add then where I would prefer, the definition is
> done by the macros defining AMD64_FSBASE_REGNUM. In this sense they have
> been added just before the orig_rax.
>
> This decision was taken based on the fact that we would like to add
> hardware registers as usual before the orig_rax, and with this addition
> also before the fs_base and gs_base.
>
>
> 2017-01-05 Walfred Tedeschi <walfred.tedeschi@intel.com>
> Richard Henderson <rth@redhat.com>
>
> gdb/ChangeLog:
>
> * amd64-linux-nat.c (PTRACE_ARCH_PRCTL): New define.
> (amd64_linux_fetch_inferior_registers): Add case to fetch FS_BASE
> GS_BASE for older kernels.
> (amd64_linux_store_inferior_registers): Add case to store FS_BASE
> GS_BASE for older kernels.
> * amd64-linux-tdep.c (amd64_linux_gregset_reg_offset): Add FS_BASE
> and GS_BASE to the offset table.
> (amd64_linux_register_reggroup_p): Add FS_BASE and GS_BASE to the
> system register group.
> * amd64-linux-tdep.h (AMD64_LINUX_ORIG_RAX_REGNUM): Set the value
> to AMD64_NUM_REGS.
> * amd64-nat.c (amd64_native_gregset_reg_offset): Adds valid_regnum
> to test validit of the register. Implements case for older
> kernels.
> * amd64-tdep.c (amd64_init_abi): Add segment registers for the
> amd64 ABI.
> * amd64-tdep.h (amd64_regnum): Add AMD64_FSBASE_REGNUM and
> AMD64_GSBASE_REGNUM.
> (AMD64_NUM_REGS): Set to AMD64_GSBASE_REGNUM + 1.
> * features/Makefile (amd64-linux.dat, amd64-avx-linux.dat)
> (amd64-mpx-linux.dat, amd64-avx512-linux.dat, x32-linux.dat)
> (x32-avx-linux.dat, x32-avx512-linux.dat): Add
> i386/64bit-segments.xml in those rules.
> * features/i386/64bit-segments.xml: New file.
> * features/i386/amd64-avx-mpx-linux.xml: Add 64bit-segments.xml.
> * features/i386/amd64-avx-linux.xml: Add 64bit-segments.xml.
> * features/i386/amd64-avx512-linux.xml: Add 64bit-segments.xml.
> * features/i386/amd64-mpx-linux.xml: Add 64bit-segments.xml.
> * features/i386/x32-avx512-linux.xml: Add 64bit-segments.xml.
> * features/i386/x32-avx-linux.xml: Add 64bit-segments.xml.
> * features/i386/amd64-linux.xml: Add 64bit-segments.xml.
> * features/i386/amd64-avx-linux.c: Regenerated.
> * features/i386/amd64-avx-mpx-linux.c: Regenerated.
> * features/i386/amd64-avx-mpx.c: Regenerated.
> * features/i386/amd64-avx512-linux.c: Regenerated.
> * features/i386/amd64-linux.c: Regenerated.
> * features/i386/amd64-mpx-linux.c: Regenerated.
> * features/i386/i386-avx-mpx-linux.c: Regenerated.
> * features/i386/i386-avx-mpx.c: Regenerated.
> * features/i386/x32-avx-linux.c: Regenerated.
> * features/i386/x32-avx512-linux.c: Regenerated.
> * regformats/i386/amd64-avx-linux.dat: Regenerated.
> * regformats/i386/amd64-avx-mpx-linux.dat: Regenerated.
> * regformats/i386/amd64-avx512-linux.dat: Regenerated.
> * regformats/i386/amd64-linux.dat: Regenerated.
> * regformats/i386/amd64-mpx-linux.dat: Regenerated.
> * regformats/i386/x32-avx-linux.dat: Regenerated.
> * regformats/i386/x32-avx512-linux.dat: Regenerated.
> * regformats/i386/x32-linux.dat: Regenerated.
>
> gdb/doc/ChangeLog:
>
> * gdb.texinfo (i386 Features): Add system segment registers
> as feature.
>
> gdb/gdbserver/ChangeLog:
>
> * linux-x86-low.c (x86_64_regmap): Add fs_base and gs_base
> to the register table.
> (x86_fill_gregset): Add support for old kernels for the
> fs_base and gs_base system registers.
> (x86_store_gregset): Likewise.
> * configure.srv (srv_i386_64bit_xmlfiles): Add 64bit-segments.xml.
>
> gdb/testsuite/ChangeLog:
>
> * gdb.arch/amd64-gs_base.c: New file.
> * gdb.arch/amd64-gs_base.exp: New file.
>
> ---
> gdb/amd64-linux-nat.c | 53 ++++++++
> gdb/amd64-linux-tdep.c | 7 +-
> gdb/amd64-linux-tdep.h | 2 +-
> gdb/amd64-nat.c | 19 ++-
> gdb/amd64-tdep.c | 13 ++
> gdb/amd64-tdep.h | 6 +-
> gdb/doc/gdb.texinfo | 3 +
> gdb/features/Makefile | 17 +--
> gdb/features/i386/64bit-segments.xml | 12 ++
> gdb/features/i386/amd64-avx-linux.c | 36 +++---
> gdb/features/i386/amd64-avx-linux.xml | 1 +
> gdb/features/i386/amd64-avx-mpx-linux.c | 48 +++----
> gdb/features/i386/amd64-avx-mpx-linux.xml | 1 +
> gdb/features/i386/amd64-avx512-linux.c | 192 ++++++++++++++--------------
> gdb/features/i386/amd64-avx512-linux.xml | 1 +
> gdb/features/i386/amd64-linux.c | 4 +
> gdb/features/i386/amd64-linux.xml | 1 +
> gdb/features/i386/amd64-mpx-linux.c | 16 ++-
> gdb/features/i386/amd64-mpx-linux.xml | 1 +
> gdb/features/i386/x32-avx-linux.c | 36 +++---
> gdb/features/i386/x32-avx-linux.xml | 1 +
> gdb/features/i386/x32-avx512-linux.c | 192 ++++++++++++++--------------
> gdb/features/i386/x32-avx512-linux.xml | 1 +
> gdb/features/i386/x32-linux.c | 4 +
> gdb/features/i386/x32-linux.xml | 1 +
> gdb/gdbserver/configure.srv | 2 +-
> gdb/gdbserver/linux-x86-low.c | 32 +++++
> gdb/regformats/i386/amd64-avx-linux.dat | 2 +
> gdb/regformats/i386/amd64-avx-mpx-linux.dat | 2 +
> gdb/regformats/i386/amd64-avx512-linux.dat | 2 +
> gdb/regformats/i386/amd64-linux.dat | 2 +
> gdb/regformats/i386/amd64-mpx-linux.dat | 2 +
> gdb/regformats/i386/x32-avx-linux.dat | 2 +
> gdb/regformats/i386/x32-avx512-linux.dat | 2 +
> gdb/regformats/i386/x32-linux.dat | 2 +
> gdb/testsuite/gdb.arch/amd64-gs_base.c | 26 ++++
> gdb/testsuite/gdb.arch/amd64-gs_base.exp | 51 ++++++++
> 37 files changed, 531 insertions(+), 264 deletions(-)
> create mode 100644 gdb/features/i386/64bit-segments.xml
> create mode 100644 gdb/testsuite/gdb.arch/amd64-gs_base.c
> create mode 100644 gdb/testsuite/gdb.arch/amd64-gs_base.exp
>
> diff --git a/gdb/amd64-linux-nat.c b/gdb/amd64-linux-nat.c
> index 4a2036b..0ec22cb 100644
> --- a/gdb/amd64-linux-nat.c
> +++ b/gdb/amd64-linux-nat.c
> @@ -40,6 +40,11 @@
> #include "nat/linux-ptrace.h"
> #include "nat/amd64-linux-siginfo.h"
>
> +/* This definition comes from prctl.h, but some kernels may not have it. */
Would it be worth mentioning the version of the oldest kernel that
carries this definition?
> +#ifndef PTRACE_ARCH_PRCTL
> +#define PTRACE_ARCH_PRCTL 30
> +#endif
> +
> /* Mapping between the general-purpose registers in GNU/Linux x86-64
> `struct user' format and GDB's register cache layout for GNU/Linux
> i386.
> @@ -171,6 +176,30 @@ amd64_linux_fetch_inferior_registers (struct target_ops *ops,
>
> amd64_supply_fxsave (regcache, -1, &fpregs);
> }
> +#ifndef HAVE_STRUCT_USER_REGS_STRUCT_FS_BASE
> + {
> + /* PTRACE_ARCH_PRCTL is obsolete since 2.6.25, where the
> + fs_base and gs_base fields of user_regs_struct can be
> + used directly. */
> + unsigned long base;
> +
> + if (regnum == -1 || regnum == AMD64_FSBASE_REGNUM)
> + {
> + if (ptrace (PTRACE_ARCH_PRCTL, tid, &base, ARCH_GET_FS) < 0)
> + perror_with_name (_("Couldn't get segment register fs_base"));
> +
> + regcache_raw_supply (regcache, AMD64_FSBASE_REGNUM, &base);
> + }
> +
> + if (regnum == -1 || regnum == AMD64_GSBASE_REGNUM)
> + {
> + if (ptrace (PTRACE_ARCH_PRCTL, tid, &base, ARCH_GET_GS) < 0)
> + perror_with_name (_("Couldn't get segment register gs_base"));
> +
> + regcache_raw_supply (regcache, AMD64_GSBASE_REGNUM, &base);
> + }
> + }
> +#endif
> }
> }
>
> @@ -237,6 +266,30 @@ amd64_linux_store_inferior_registers (struct target_ops *ops,
> if (ptrace (PTRACE_SETFPREGS, tid, 0, (long) &fpregs) < 0)
> perror_with_name (_("Couldn't write floating point status"));
> }
> +
> +#ifndef HAVE_STRUCT_USER_REGS_STRUCT_FS_BASE
> + {
> + /* PTRACE_ARCH_PRCTL is obsolete since 2.6.25, where the
> + fs_base and gs_base fields of user_regs_struct can be
> + used directly. */
> + void *base;
> +
> + if (regnum == -1 || regnum == AMD64_FSBASE_REGNUM)
> + {
> + regcache_raw_collect (regcache, AMD64_FSBASE_REGNUM, &base);
> +
> + if (ptrace (PTRACE_ARCH_PRCTL, tid, base, ARCH_SET_FS) < 0)
> + perror_with_name (_("Couldn't write fs_base"));
Nit, but should we make the messages more coherent?
"Couldn't write segment register fs_base" for example?
> + }
> + if (regnum == -1 || regnum == AMD64_GSBASE_REGNUM)
> + {
> +
> + regcache_raw_collect (regcache, AMD64_GSBASE_REGNUM, &base);
> + if (ptrace (PTRACE_ARCH_PRCTL, tid, base, ARCH_SET_GS) < 0)
> + perror_with_name (_("Couldn't write gs_base"));
> + }
> + }
> +#endif
> }
> }
>
> diff --git a/gdb/amd64-linux-tdep.c b/gdb/amd64-linux-tdep.c
> index 1e9f75f..b9d7176 100644
> --- a/gdb/amd64-linux-tdep.c
> +++ b/gdb/amd64-linux-tdep.c
> @@ -103,6 +103,9 @@ int amd64_linux_gregset_reg_offset[] =
> -1, -1, -1, -1, -1, -1, -1, -1,
> -1, -1, -1, -1, -1, -1, -1, -1,
> -1, -1, -1, -1, -1, -1, -1, -1,
> +
> + /* End of hardware registers */
> + 21 * 8, 22 * 8, /* fs_base and gs_base. */
> 15 * 8 /* "orig_rax" */
> };
>
> @@ -284,7 +287,9 @@ static int
> amd64_linux_register_reggroup_p (struct gdbarch *gdbarch, int regnum,
> struct reggroup *group)
> {
> - if (regnum == AMD64_LINUX_ORIG_RAX_REGNUM)
> + if (regnum == AMD64_LINUX_ORIG_RAX_REGNUM
> + || regnum == AMD64_FSBASE_REGNUM
> + || regnum == AMD64_GSBASE_REGNUM)
> return (group == system_reggroup
> || group == save_reggroup
> || group == restore_reggroup);
> diff --git a/gdb/amd64-linux-tdep.h b/gdb/amd64-linux-tdep.h
> index 5d032a6..3704caa 100644
> --- a/gdb/amd64-linux-tdep.h
> +++ b/gdb/amd64-linux-tdep.h
> @@ -26,7 +26,7 @@
> /* Register number for the "orig_rax" register. If this register
> contains a value >= 0 it is interpreted as the system call number
> that the kernel is supposed to restart. */
> -#define AMD64_LINUX_ORIG_RAX_REGNUM (AMD64_ZMM31H_REGNUM + 1)
> +#define AMD64_LINUX_ORIG_RAX_REGNUM (AMD64_NUM_REGS)
>
> /* Total number of registers for GNU/Linux. */
> #define AMD64_LINUX_NUM_REGS (AMD64_LINUX_ORIG_RAX_REGNUM + 1)
> diff --git a/gdb/amd64-nat.c b/gdb/amd64-nat.c
> index 18c8a99..0143632 100644
> --- a/gdb/amd64-nat.c
> +++ b/gdb/amd64-nat.c
> @@ -53,6 +53,7 @@ amd64_native_gregset_reg_offset (struct gdbarch *gdbarch, int regnum)
> {
> int *reg_offset = amd64_native_gregset64_reg_offset;
> int num_regs = amd64_native_gregset64_num_regs;
> + bool valid_regnum = false;
>
> gdb_assert (regnum >= 0);
>
> @@ -65,10 +66,22 @@ amd64_native_gregset_reg_offset (struct gdbarch *gdbarch, int regnum)
> if (num_regs > gdbarch_num_regs (gdbarch))
> num_regs = gdbarch_num_regs (gdbarch);
>
> - if (regnum < num_regs && regnum < gdbarch_num_regs (gdbarch))
> - return reg_offset[regnum];
> + /* Looks like we do not need the second part of the &&.
> + Register validity is already guaranteed in the first part due to the
> + comparison above. */
It looks that way. Can we remove that conditional block then and remove
the comment?
> + valid_regnum = regnum < num_regs && regnum < gdbarch_num_regs (gdbarch);
>
> - return -1;
> + if (valid_regnum == false)
> + return -1;
> +
> + /* Definition of the offset foresees new kernel support, it has to be
> + corrected here in case the kernel is older. */
> +#ifndef HAVE_STRUCT_USER_REGS_STRUCT_FS_BASE
> + if (regnum == AMD64_FSBASE_REGNUM || regnum == AMD64_GSBASE_REGNUM)
> + return -1;
> +#endif
> +
> + return reg_offset[regnum];
> }
>
> /* Return whether the native general-purpose register set supplies
> diff --git a/gdb/amd64-tdep.c b/gdb/amd64-tdep.c
> index a636742..2588025 100644
> --- a/gdb/amd64-tdep.c
> +++ b/gdb/amd64-tdep.c
> @@ -3047,6 +3047,19 @@ amd64_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
> tdep->bnd0r_regnum = AMD64_BND0R_REGNUM;
> }
>
> + if (tdesc_find_feature (tdesc, "org.gnu.gdb.i386.segments") != NULL)
> + {
> + const struct tdesc_feature *feature =
> + tdesc_find_feature (tdesc, "org.gnu.gdb.i386.segments");
> + struct tdesc_arch_data *tdesc_data_segments
> + = (struct tdesc_arch_data *) info.tdep_info;
> +
> + tdesc_numbered_register (feature, tdesc_data_segments,
> + AMD64_FSBASE_REGNUM, "fs_base");
> + tdesc_numbered_register (feature, tdesc_data_segments,
> + AMD64_GSBASE_REGNUM, "gs_base");
> + }
> +
> tdep->num_byte_regs = 20;
> tdep->num_word_regs = 16;
> tdep->num_dword_regs = 16;
> diff --git a/gdb/amd64-tdep.h b/gdb/amd64-tdep.h
> index 3f84947..8ccf031 100644
> --- a/gdb/amd64-tdep.h
> +++ b/gdb/amd64-tdep.h
> @@ -76,13 +76,15 @@ enum amd64_regnum
> AMD64_K0_REGNUM,
> AMD64_K7_REGNUM = AMD64_K0_REGNUM + 7,
> AMD64_ZMM0H_REGNUM,
> - AMD64_ZMM31H_REGNUM = AMD64_ZMM0H_REGNUM + 31
> + AMD64_ZMM31H_REGNUM = AMD64_ZMM0H_REGNUM + 31,
> + AMD64_FSBASE_REGNUM,
> + AMD64_GSBASE_REGNUM
> };
>
> /* Number of general purpose registers. */
> #define AMD64_NUM_GREGS 24
>
> -#define AMD64_NUM_REGS (AMD64_ZMM31H_REGNUM + 1)
> +#define AMD64_NUM_REGS (AMD64_GSBASE_REGNUM + 1)
>
> extern struct target_desc *tdesc_amd64;
>
> diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo
> index 2b6b654..4e854ce 100644
> --- a/gdb/doc/gdb.texinfo
> +++ b/gdb/doc/gdb.texinfo
> @@ -41148,6 +41148,9 @@ Memory Protection Extension (MPX). It should describe the following registers:
> The @samp{org.gnu.gdb.i386.linux} feature is optional. It should
> describe a single register, @samp{orig_eax}.
>
> +The @samp{org.gnu.gdb.i386.segments} feature is optional. It should
> +describe two system registers: @samp{fs_base} and @samp{gs_base}.
> +
> The @samp{org.gnu.gdb.i386.avx512} feature is optional and requires the
> @samp{org.gnu.gdb.i386.avx} feature. It should
> describe additional @sc{xmm} registers:
> diff --git a/gdb/features/Makefile b/gdb/features/Makefile
> index 63f8248..5a82641 100644
> --- a/gdb/features/Makefile
> +++ b/gdb/features/Makefile
> @@ -259,7 +259,7 @@ $(outdir)/i386/i386-linux.dat: i386/32bit-core.xml i386/32bit-sse.xml \
> i386/32bit-linux.xml
> $(outdir)/i386/amd64.dat: i386/64bit-core.xml i386/64bit-sse.xml
> $(outdir)/i386/amd64-linux.dat: i386/64bit-core.xml i386/64bit-sse.xml \
> - i386/64bit-linux.xml
> + i386/64bit-linux.xml i386/64bit-segments.xml
> $(outdir)/i386/i386-avx.dat: i386/32bit-core.xml i386/32bit-avx.xml
> $(outdir)/i386/i386-avx-linux.dat: i386/32bit-core.xml i386/32bit-avx.xml \
> i386/32bit-linux.xml
> @@ -279,11 +279,11 @@ $(outdir)/i386/i386-mmx.dat: i386/32bit-core.xml
> $(outdir)/i386/i386-mmx-linux.dat: i386/32bit-core.xml i386/32bit-linux.xml
> $(outdir)/i386/amd64-avx.dat: i386/64bit-core.xml i386/64bit-avx.xml
> $(outdir)/i386/amd64-avx-linux.dat: i386/64bit-core.xml i386/64bit-avx.xml \
> - i386/64bit-linux.xml
> + i386/64bit-linux.xml i386/64bit-segments.xml
> $(outdir)/i386/amd64-mpx-linux.dat: i386/64bit-core.xml i386/64bit-avx.xml \
> - i386/64bit-linux.xml i386/64bit-mpx.xml
> + i386/64bit-linux.xml i386/64bit-segments.xml i386/64bit-mpx.xml
> $(outdir)/i386/amd64-avx-mpx-linux.dat: i386/64bit-core.xml \
> - i386/64bit-linux.xml i386/64bit-mpx.xml
> + i386/64bit-linux.xml i386/64bit-segments.xml i386/64bit-mpx.xml
> $(outdir)/i386/amd64-mpx.dat: i386/64bit-core.xml i386/64bit-avx.xml \
> i386/64bit-mpx.xml
> $(outdir)/i386/amd64-avx-mpx.dat: i386/64bit-core.xml \
> @@ -292,17 +292,18 @@ $(outdir)/i386/amd64-avx512.dat: i386/64bit-core.xml i386/64bit-avx.xml \
> i386/64bit-mpx.xml i386/64bit-avx512.xml
> $(outdir)/i386/amd64-avx512-linux.dat: i386/64bit-core.xml i386/64bit-avx.xml \
> i386/64bit-mpx.xml i386/64bit-avx512.xml \
> - i386/64bit-linux.xml
> + i386/64bit-linux.xml i386/64bit-segments.xml
> $(outdir)/i386/x32.dat: i386/x32-core.xml i386/64bit-sse.xml
> $(outdir)/i386/x32-linux.dat: i386/x32-core.xml i386/64bit-sse.xml \
> - i386/64bit-linux.xml
> + i386/64bit-linux.xml i386/64bit-segments.xml
> $(outdir)/i386/x32-avx.dat: i386/x32-core.xml i386/64bit-avx.xml
> $(outdir)/i386/x32-avx-linux.dat: i386/x32-core.xml i386/64bit-avx.xml \
> - i386/64bit-linux.xml
> + i386/64bit-linux.xml i386/64bit-segments.xml
> $(outdir)/i386/x32-avx512.dat: i386/x32-core.xml i386/64bit-avx.xml \
> i386/64bit-mpx.xml i386/64bit-avx512.xml
> $(outdir)/i386/x32-avx512-linux.dat: i386/x32-core.xml i386/64bit-avx.xml \
> - i386/64bit-mpx.xml i386/64bit-avx512.xml i386/64bit-linux.xml
> + i386/64bit-mpx.xml i386/64bit-avx512.xml \
> + i386/64bit-linux.xml i386/64bit-segments.xml
>
> # 'all' doesn't build the C files, so don't delete them in 'clean'
> # either.
> diff --git a/gdb/features/i386/64bit-segments.xml b/gdb/features/i386/64bit-segments.xml
> new file mode 100644
> index 0000000..16c0929
> --- /dev/null
> +++ b/gdb/features/i386/64bit-segments.xml
> @@ -0,0 +1,12 @@
> +<?xml version="1.0"?>
> +<!-- Copyright (C) 2016 Free Software Foundation, Inc.
2017
> +
> + Copying and distribution of this file, with or without modification,
> + are permitted in any medium without royalty provided the copyright
> + notice and this notice are preserved. -->
> +
> +<!DOCTYPE feature SYSTEM "gdb-target.dtd">
> +<feature name="org.gnu.gdb.i386.segments">
> + <reg name="fs_base" bitsize="64" type="int"/>
> + <reg name="gs_base" bitsize="64" type="int"/>
> +</feature>
> diff --git a/gdb/features/i386/amd64-avx-linux.c b/gdb/features/i386/amd64-avx-linux.c
> index 9c8f9eb..1d56dbf 100644
> --- a/gdb/features/i386/amd64-avx-linux.c
> +++ b/gdb/features/i386/amd64-avx-linux.c
> @@ -151,23 +151,27 @@ initialize_tdesc_amd64_avx_linux (void)
> feature = tdesc_create_feature (result, "org.gnu.gdb.i386.linux");
> tdesc_create_reg (feature, "orig_rax", 57, 1, NULL, 64, "int");
>
> + feature = tdesc_create_feature (result, "org.gnu.gdb.i386.segments");
> + tdesc_create_reg (feature, "fs_base", 58, 1, NULL, 64, "int");
> + tdesc_create_reg (feature, "gs_base", 59, 1, NULL, 64, "int");
> +
> feature = tdesc_create_feature (result, "org.gnu.gdb.i386.avx");
> - tdesc_create_reg (feature, "ymm0h", 58, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm1h", 59, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm2h", 60, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm3h", 61, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm4h", 62, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm5h", 63, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm6h", 64, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm7h", 65, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm8h", 66, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm9h", 67, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm10h", 68, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm11h", 69, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm12h", 70, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm13h", 71, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm14h", 72, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm15h", 73, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm0h", 60, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm1h", 61, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm2h", 62, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm3h", 63, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm4h", 64, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm5h", 65, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm6h", 66, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm7h", 67, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm8h", 68, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm9h", 69, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm10h", 70, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm11h", 71, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm12h", 72, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm13h", 73, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm14h", 74, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm15h", 75, 1, NULL, 128, "uint128");
>
> tdesc_amd64_avx_linux = result;
> }
> diff --git a/gdb/features/i386/amd64-avx-linux.xml b/gdb/features/i386/amd64-avx-linux.xml
> index 470dd55..2dac9cd 100644
> --- a/gdb/features/i386/amd64-avx-linux.xml
> +++ b/gdb/features/i386/amd64-avx-linux.xml
> @@ -14,5 +14,6 @@
> <xi:include href="64bit-core.xml"/>
> <xi:include href="64bit-sse.xml"/>
> <xi:include href="64bit-linux.xml"/>
> + <xi:include href="64bit-segments.xml"/>
> <xi:include href="64bit-avx.xml"/>
> </target>
> diff --git a/gdb/features/i386/amd64-avx-mpx-linux.c b/gdb/features/i386/amd64-avx-mpx-linux.c
> index 4605480..26c1339 100644
> --- a/gdb/features/i386/amd64-avx-mpx-linux.c
> +++ b/gdb/features/i386/amd64-avx-mpx-linux.c
> @@ -151,23 +151,27 @@ initialize_tdesc_amd64_avx_mpx_linux (void)
> feature = tdesc_create_feature (result, "org.gnu.gdb.i386.linux");
> tdesc_create_reg (feature, "orig_rax", 57, 1, NULL, 64, "int");
>
> + feature = tdesc_create_feature (result, "org.gnu.gdb.i386.segments");
> + tdesc_create_reg (feature, "fs_base", 58, 1, NULL, 64, "int");
> + tdesc_create_reg (feature, "gs_base", 59, 1, NULL, 64, "int");
> +
> feature = tdesc_create_feature (result, "org.gnu.gdb.i386.avx");
> - tdesc_create_reg (feature, "ymm0h", 58, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm1h", 59, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm2h", 60, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm3h", 61, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm4h", 62, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm5h", 63, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm6h", 64, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm7h", 65, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm8h", 66, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm9h", 67, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm10h", 68, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm11h", 69, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm12h", 70, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm13h", 71, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm14h", 72, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm15h", 73, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm0h", 60, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm1h", 61, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm2h", 62, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm3h", 63, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm4h", 64, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm5h", 65, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm6h", 66, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm7h", 67, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm8h", 68, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm9h", 69, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm10h", 70, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm11h", 71, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm12h", 72, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm13h", 73, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm14h", 74, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm15h", 75, 1, NULL, 128, "uint128");
>
> feature = tdesc_create_feature (result, "org.gnu.gdb.i386.mpx");
> type = tdesc_create_struct (feature, "br128");
> @@ -200,12 +204,12 @@ initialize_tdesc_amd64_avx_mpx_linux (void)
> field_type = tdesc_named_type (feature, "_bndcfgu");
> tdesc_add_field (type, "config", field_type);
>
> - tdesc_create_reg (feature, "bnd0raw", 74, 1, NULL, 128, "br128");
> - tdesc_create_reg (feature, "bnd1raw", 75, 1, NULL, 128, "br128");
> - tdesc_create_reg (feature, "bnd2raw", 76, 1, NULL, 128, "br128");
> - tdesc_create_reg (feature, "bnd3raw", 77, 1, NULL, 128, "br128");
> - tdesc_create_reg (feature, "bndcfgu", 78, 1, NULL, 64, "cfgu");
> - tdesc_create_reg (feature, "bndstatus", 79, 1, NULL, 64, "status");
> + tdesc_create_reg (feature, "bnd0raw", 76, 1, NULL, 128, "br128");
> + tdesc_create_reg (feature, "bnd1raw", 77, 1, NULL, 128, "br128");
> + tdesc_create_reg (feature, "bnd2raw", 78, 1, NULL, 128, "br128");
> + tdesc_create_reg (feature, "bnd3raw", 79, 1, NULL, 128, "br128");
> + tdesc_create_reg (feature, "bndcfgu", 80, 1, NULL, 64, "cfgu");
> + tdesc_create_reg (feature, "bndstatus", 81, 1, NULL, 64, "status");
>
> tdesc_amd64_avx_mpx_linux = result;
> }
> diff --git a/gdb/features/i386/amd64-avx-mpx-linux.xml b/gdb/features/i386/amd64-avx-mpx-linux.xml
> index e29317f..433f777 100644
> --- a/gdb/features/i386/amd64-avx-mpx-linux.xml
> +++ b/gdb/features/i386/amd64-avx-mpx-linux.xml
> @@ -14,6 +14,7 @@
> <xi:include href="64bit-core.xml"/>
> <xi:include href="64bit-sse.xml"/>
> <xi:include href="64bit-linux.xml"/>
> + <xi:include href="64bit-segments.xml"/>
> <xi:include href="64bit-avx.xml"/>
> <xi:include href="64bit-mpx.xml"/>
> </target>
> diff --git a/gdb/features/i386/amd64-avx512-linux.c b/gdb/features/i386/amd64-avx512-linux.c
> index ec3ba61..b071f62 100644
> --- a/gdb/features/i386/amd64-avx512-linux.c
> +++ b/gdb/features/i386/amd64-avx512-linux.c
> @@ -151,23 +151,27 @@ initialize_tdesc_amd64_avx512_linux (void)
> feature = tdesc_create_feature (result, "org.gnu.gdb.i386.linux");
> tdesc_create_reg (feature, "orig_rax", 57, 1, NULL, 64, "int");
>
> + feature = tdesc_create_feature (result, "org.gnu.gdb.i386.segments");
> + tdesc_create_reg (feature, "fs_base", 58, 1, NULL, 64, "int");
> + tdesc_create_reg (feature, "gs_base", 59, 1, NULL, 64, "int");
> +
> feature = tdesc_create_feature (result, "org.gnu.gdb.i386.avx");
> - tdesc_create_reg (feature, "ymm0h", 58, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm1h", 59, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm2h", 60, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm3h", 61, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm4h", 62, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm5h", 63, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm6h", 64, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm7h", 65, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm8h", 66, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm9h", 67, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm10h", 68, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm11h", 69, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm12h", 70, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm13h", 71, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm14h", 72, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm15h", 73, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm0h", 60, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm1h", 61, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm2h", 62, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm3h", 63, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm4h", 64, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm5h", 65, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm6h", 66, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm7h", 67, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm8h", 68, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm9h", 69, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm10h", 70, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm11h", 71, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm12h", 72, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm13h", 73, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm14h", 74, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm15h", 75, 1, NULL, 128, "uint128");
>
> feature = tdesc_create_feature (result, "org.gnu.gdb.i386.mpx");
> type = tdesc_create_struct (feature, "br128");
> @@ -200,12 +204,12 @@ initialize_tdesc_amd64_avx512_linux (void)
> field_type = tdesc_named_type (feature, "_bndcfgu");
> tdesc_add_field (type, "config", field_type);
>
> - tdesc_create_reg (feature, "bnd0raw", 74, 1, NULL, 128, "br128");
> - tdesc_create_reg (feature, "bnd1raw", 75, 1, NULL, 128, "br128");
> - tdesc_create_reg (feature, "bnd2raw", 76, 1, NULL, 128, "br128");
> - tdesc_create_reg (feature, "bnd3raw", 77, 1, NULL, 128, "br128");
> - tdesc_create_reg (feature, "bndcfgu", 78, 1, NULL, 64, "cfgu");
> - tdesc_create_reg (feature, "bndstatus", 79, 1, NULL, 64, "status");
> + tdesc_create_reg (feature, "bnd0raw", 76, 1, NULL, 128, "br128");
> + tdesc_create_reg (feature, "bnd1raw", 77, 1, NULL, 128, "br128");
> + tdesc_create_reg (feature, "bnd2raw", 78, 1, NULL, 128, "br128");
> + tdesc_create_reg (feature, "bnd3raw", 79, 1, NULL, 128, "br128");
> + tdesc_create_reg (feature, "bndcfgu", 80, 1, NULL, 64, "cfgu");
> + tdesc_create_reg (feature, "bndstatus", 81, 1, NULL, 64, "status");
>
> feature = tdesc_create_feature (result, "org.gnu.gdb.i386.avx512");
> field_type = tdesc_named_type (feature, "ieee_single");
> @@ -245,78 +249,78 @@ initialize_tdesc_amd64_avx512_linux (void)
> field_type = tdesc_named_type (feature, "uint128");
> tdesc_create_vector (feature, "v2ui128", field_type, 2);
>
> - tdesc_create_reg (feature, "xmm16", 80, 1, NULL, 128, "vec128");
> - tdesc_create_reg (feature, "xmm17", 81, 1, NULL, 128, "vec128");
> - tdesc_create_reg (feature, "xmm18", 82, 1, NULL, 128, "vec128");
> - tdesc_create_reg (feature, "xmm19", 83, 1, NULL, 128, "vec128");
> - tdesc_create_reg (feature, "xmm20", 84, 1, NULL, 128, "vec128");
> - tdesc_create_reg (feature, "xmm21", 85, 1, NULL, 128, "vec128");
> - tdesc_create_reg (feature, "xmm22", 86, 1, NULL, 128, "vec128");
> - tdesc_create_reg (feature, "xmm23", 87, 1, NULL, 128, "vec128");
> - tdesc_create_reg (feature, "xmm24", 88, 1, NULL, 128, "vec128");
> - tdesc_create_reg (feature, "xmm25", 89, 1, NULL, 128, "vec128");
> - tdesc_create_reg (feature, "xmm26", 90, 1, NULL, 128, "vec128");
> - tdesc_create_reg (feature, "xmm27", 91, 1, NULL, 128, "vec128");
> - tdesc_create_reg (feature, "xmm28", 92, 1, NULL, 128, "vec128");
> - tdesc_create_reg (feature, "xmm29", 93, 1, NULL, 128, "vec128");
> - tdesc_create_reg (feature, "xmm30", 94, 1, NULL, 128, "vec128");
> - tdesc_create_reg (feature, "xmm31", 95, 1, NULL, 128, "vec128");
> - tdesc_create_reg (feature, "ymm16h", 96, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm17h", 97, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm18h", 98, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm19h", 99, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm20h", 100, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm21h", 101, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm22h", 102, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm23h", 103, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm24h", 104, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm25h", 105, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm26h", 106, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm27h", 107, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm28h", 108, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm29h", 109, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm30h", 110, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm31h", 111, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "k0", 112, 1, NULL, 64, "uint64");
> - tdesc_create_reg (feature, "k1", 113, 1, NULL, 64, "uint64");
> - tdesc_create_reg (feature, "k2", 114, 1, NULL, 64, "uint64");
> - tdesc_create_reg (feature, "k3", 115, 1, NULL, 64, "uint64");
> - tdesc_create_reg (feature, "k4", 116, 1, NULL, 64, "uint64");
> - tdesc_create_reg (feature, "k5", 117, 1, NULL, 64, "uint64");
> - tdesc_create_reg (feature, "k6", 118, 1, NULL, 64, "uint64");
> - tdesc_create_reg (feature, "k7", 119, 1, NULL, 64, "uint64");
> - tdesc_create_reg (feature, "zmm0h", 120, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm1h", 121, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm2h", 122, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm3h", 123, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm4h", 124, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm5h", 125, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm6h", 126, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm7h", 127, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm8h", 128, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm9h", 129, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm10h", 130, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm11h", 131, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm12h", 132, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm13h", 133, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm14h", 134, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm15h", 135, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm16h", 136, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm17h", 137, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm18h", 138, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm19h", 139, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm20h", 140, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm21h", 141, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm22h", 142, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm23h", 143, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm24h", 144, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm25h", 145, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm26h", 146, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm27h", 147, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm28h", 148, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm29h", 149, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm30h", 150, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm31h", 151, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "xmm16", 82, 1, NULL, 128, "vec128");
> + tdesc_create_reg (feature, "xmm17", 83, 1, NULL, 128, "vec128");
> + tdesc_create_reg (feature, "xmm18", 84, 1, NULL, 128, "vec128");
> + tdesc_create_reg (feature, "xmm19", 85, 1, NULL, 128, "vec128");
> + tdesc_create_reg (feature, "xmm20", 86, 1, NULL, 128, "vec128");
> + tdesc_create_reg (feature, "xmm21", 87, 1, NULL, 128, "vec128");
> + tdesc_create_reg (feature, "xmm22", 88, 1, NULL, 128, "vec128");
> + tdesc_create_reg (feature, "xmm23", 89, 1, NULL, 128, "vec128");
> + tdesc_create_reg (feature, "xmm24", 90, 1, NULL, 128, "vec128");
> + tdesc_create_reg (feature, "xmm25", 91, 1, NULL, 128, "vec128");
> + tdesc_create_reg (feature, "xmm26", 92, 1, NULL, 128, "vec128");
> + tdesc_create_reg (feature, "xmm27", 93, 1, NULL, 128, "vec128");
> + tdesc_create_reg (feature, "xmm28", 94, 1, NULL, 128, "vec128");
> + tdesc_create_reg (feature, "xmm29", 95, 1, NULL, 128, "vec128");
> + tdesc_create_reg (feature, "xmm30", 96, 1, NULL, 128, "vec128");
> + tdesc_create_reg (feature, "xmm31", 97, 1, NULL, 128, "vec128");
> + tdesc_create_reg (feature, "ymm16h", 98, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm17h", 99, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm18h", 100, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm19h", 101, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm20h", 102, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm21h", 103, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm22h", 104, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm23h", 105, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm24h", 106, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm25h", 107, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm26h", 108, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm27h", 109, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm28h", 110, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm29h", 111, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm30h", 112, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm31h", 113, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "k0", 114, 1, NULL, 64, "uint64");
> + tdesc_create_reg (feature, "k1", 115, 1, NULL, 64, "uint64");
> + tdesc_create_reg (feature, "k2", 116, 1, NULL, 64, "uint64");
> + tdesc_create_reg (feature, "k3", 117, 1, NULL, 64, "uint64");
> + tdesc_create_reg (feature, "k4", 118, 1, NULL, 64, "uint64");
> + tdesc_create_reg (feature, "k5", 119, 1, NULL, 64, "uint64");
> + tdesc_create_reg (feature, "k6", 120, 1, NULL, 64, "uint64");
> + tdesc_create_reg (feature, "k7", 121, 1, NULL, 64, "uint64");
> + tdesc_create_reg (feature, "zmm0h", 122, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm1h", 123, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm2h", 124, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm3h", 125, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm4h", 126, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm5h", 127, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm6h", 128, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm7h", 129, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm8h", 130, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm9h", 131, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm10h", 132, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm11h", 133, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm12h", 134, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm13h", 135, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm14h", 136, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm15h", 137, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm16h", 138, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm17h", 139, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm18h", 140, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm19h", 141, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm20h", 142, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm21h", 143, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm22h", 144, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm23h", 145, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm24h", 146, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm25h", 147, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm26h", 148, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm27h", 149, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm28h", 150, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm29h", 151, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm30h", 152, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm31h", 153, 1, NULL, 256, "v2ui128");
>
> tdesc_amd64_avx512_linux = result;
> }
> diff --git a/gdb/features/i386/amd64-avx512-linux.xml b/gdb/features/i386/amd64-avx512-linux.xml
> index 2ee2e8b..516f4e3 100644
> --- a/gdb/features/i386/amd64-avx512-linux.xml
> +++ b/gdb/features/i386/amd64-avx512-linux.xml
> @@ -14,6 +14,7 @@
> <xi:include href="64bit-core.xml"/>
> <xi:include href="64bit-sse.xml"/>
> <xi:include href="64bit-linux.xml"/>
> + <xi:include href="64bit-segments.xml"/>
> <xi:include href="64bit-avx.xml"/>
> <xi:include href="64bit-mpx.xml"/>
> <xi:include href="64bit-avx512.xml"/>
> diff --git a/gdb/features/i386/amd64-linux.c b/gdb/features/i386/amd64-linux.c
> index 02aeba5..0e921ba9 100644
> --- a/gdb/features/i386/amd64-linux.c
> +++ b/gdb/features/i386/amd64-linux.c
> @@ -151,5 +151,9 @@ initialize_tdesc_amd64_linux (void)
> feature = tdesc_create_feature (result, "org.gnu.gdb.i386.linux");
> tdesc_create_reg (feature, "orig_rax", 57, 1, NULL, 64, "int");
>
> + feature = tdesc_create_feature (result, "org.gnu.gdb.i386.segments");
> + tdesc_create_reg (feature, "fs_base", 58, 1, NULL, 64, "int");
> + tdesc_create_reg (feature, "gs_base", 59, 1, NULL, 64, "int");
> +
> tdesc_amd64_linux = result;
> }
> diff --git a/gdb/features/i386/amd64-linux.xml b/gdb/features/i386/amd64-linux.xml
> index 2ce9341..7d3a9f2 100644
> --- a/gdb/features/i386/amd64-linux.xml
> +++ b/gdb/features/i386/amd64-linux.xml
> @@ -14,4 +14,5 @@
> <xi:include href="64bit-core.xml"/>
> <xi:include href="64bit-sse.xml"/>
> <xi:include href="64bit-linux.xml"/>
> + <xi:include href="64bit-segments.xml"/>
> </target>
> diff --git a/gdb/features/i386/amd64-mpx-linux.c b/gdb/features/i386/amd64-mpx-linux.c
> index a20ca4f..e26a74a 100644
> --- a/gdb/features/i386/amd64-mpx-linux.c
> +++ b/gdb/features/i386/amd64-mpx-linux.c
> @@ -151,6 +151,10 @@ initialize_tdesc_amd64_mpx_linux (void)
> feature = tdesc_create_feature (result, "org.gnu.gdb.i386.linux");
> tdesc_create_reg (feature, "orig_rax", 57, 1, NULL, 64, "int");
>
> + feature = tdesc_create_feature (result, "org.gnu.gdb.i386.segments");
> + tdesc_create_reg (feature, "fs_base", 58, 1, NULL, 64, "int");
> + tdesc_create_reg (feature, "gs_base", 59, 1, NULL, 64, "int");
> +
> feature = tdesc_create_feature (result, "org.gnu.gdb.i386.mpx");
> type = tdesc_create_struct (feature, "br128");
> field_type = tdesc_named_type (feature, "uint64");
> @@ -182,12 +186,12 @@ initialize_tdesc_amd64_mpx_linux (void)
> field_type = tdesc_named_type (feature, "_bndcfgu");
> tdesc_add_field (type, "config", field_type);
>
> - tdesc_create_reg (feature, "bnd0raw", 58, 1, NULL, 128, "br128");
> - tdesc_create_reg (feature, "bnd1raw", 59, 1, NULL, 128, "br128");
> - tdesc_create_reg (feature, "bnd2raw", 60, 1, NULL, 128, "br128");
> - tdesc_create_reg (feature, "bnd3raw", 61, 1, NULL, 128, "br128");
> - tdesc_create_reg (feature, "bndcfgu", 62, 1, NULL, 64, "cfgu");
> - tdesc_create_reg (feature, "bndstatus", 63, 1, NULL, 64, "status");
> + tdesc_create_reg (feature, "bnd0raw", 60, 1, NULL, 128, "br128");
> + tdesc_create_reg (feature, "bnd1raw", 61, 1, NULL, 128, "br128");
> + tdesc_create_reg (feature, "bnd2raw", 62, 1, NULL, 128, "br128");
> + tdesc_create_reg (feature, "bnd3raw", 63, 1, NULL, 128, "br128");
> + tdesc_create_reg (feature, "bndcfgu", 64, 1, NULL, 64, "cfgu");
> + tdesc_create_reg (feature, "bndstatus", 65, 1, NULL, 64, "status");
>
> tdesc_amd64_mpx_linux = result;
> }
> diff --git a/gdb/features/i386/amd64-mpx-linux.xml b/gdb/features/i386/amd64-mpx-linux.xml
> index 9c7cf9a..853b819 100644
> --- a/gdb/features/i386/amd64-mpx-linux.xml
> +++ b/gdb/features/i386/amd64-mpx-linux.xml
> @@ -14,5 +14,6 @@
> <xi:include href="64bit-core.xml"/>
> <xi:include href="64bit-sse.xml"/>
> <xi:include href="64bit-linux.xml"/>
> + <xi:include href="64bit-segments.xml"/>
> <xi:include href="64bit-mpx.xml"/>
> </target>
> diff --git a/gdb/features/i386/x32-avx-linux.c b/gdb/features/i386/x32-avx-linux.c
> index b12c71c..8406815 100644
> --- a/gdb/features/i386/x32-avx-linux.c
> +++ b/gdb/features/i386/x32-avx-linux.c
> @@ -151,23 +151,27 @@ initialize_tdesc_x32_avx_linux (void)
> feature = tdesc_create_feature (result, "org.gnu.gdb.i386.linux");
> tdesc_create_reg (feature, "orig_rax", 57, 1, NULL, 64, "int");
>
> + feature = tdesc_create_feature (result, "org.gnu.gdb.i386.segments");
> + tdesc_create_reg (feature, "fs_base", 58, 1, NULL, 64, "int");
> + tdesc_create_reg (feature, "gs_base", 59, 1, NULL, 64, "int");
> +
> feature = tdesc_create_feature (result, "org.gnu.gdb.i386.avx");
> - tdesc_create_reg (feature, "ymm0h", 58, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm1h", 59, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm2h", 60, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm3h", 61, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm4h", 62, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm5h", 63, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm6h", 64, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm7h", 65, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm8h", 66, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm9h", 67, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm10h", 68, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm11h", 69, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm12h", 70, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm13h", 71, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm14h", 72, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm15h", 73, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm0h", 60, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm1h", 61, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm2h", 62, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm3h", 63, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm4h", 64, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm5h", 65, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm6h", 66, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm7h", 67, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm8h", 68, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm9h", 69, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm10h", 70, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm11h", 71, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm12h", 72, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm13h", 73, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm14h", 74, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm15h", 75, 1, NULL, 128, "uint128");
>
> tdesc_x32_avx_linux = result;
> }
> diff --git a/gdb/features/i386/x32-avx-linux.xml b/gdb/features/i386/x32-avx-linux.xml
> index f60a443..89d2e7c 100644
> --- a/gdb/features/i386/x32-avx-linux.xml
> +++ b/gdb/features/i386/x32-avx-linux.xml
> @@ -14,5 +14,6 @@
> <xi:include href="x32-core.xml"/>
> <xi:include href="64bit-sse.xml"/>
> <xi:include href="64bit-linux.xml"/>
> + <xi:include href="64bit-segments.xml"/>
> <xi:include href="64bit-avx.xml"/>
> </target>
> diff --git a/gdb/features/i386/x32-avx512-linux.c b/gdb/features/i386/x32-avx512-linux.c
> index 7b2ab90..3994996 100644
> --- a/gdb/features/i386/x32-avx512-linux.c
> +++ b/gdb/features/i386/x32-avx512-linux.c
> @@ -151,23 +151,27 @@ initialize_tdesc_x32_avx512_linux (void)
> feature = tdesc_create_feature (result, "org.gnu.gdb.i386.linux");
> tdesc_create_reg (feature, "orig_rax", 57, 1, NULL, 64, "int");
>
> + feature = tdesc_create_feature (result, "org.gnu.gdb.i386.segments");
> + tdesc_create_reg (feature, "fs_base", 58, 1, NULL, 64, "int");
> + tdesc_create_reg (feature, "gs_base", 59, 1, NULL, 64, "int");
> +
> feature = tdesc_create_feature (result, "org.gnu.gdb.i386.avx");
> - tdesc_create_reg (feature, "ymm0h", 58, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm1h", 59, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm2h", 60, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm3h", 61, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm4h", 62, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm5h", 63, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm6h", 64, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm7h", 65, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm8h", 66, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm9h", 67, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm10h", 68, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm11h", 69, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm12h", 70, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm13h", 71, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm14h", 72, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm15h", 73, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm0h", 60, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm1h", 61, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm2h", 62, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm3h", 63, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm4h", 64, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm5h", 65, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm6h", 66, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm7h", 67, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm8h", 68, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm9h", 69, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm10h", 70, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm11h", 71, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm12h", 72, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm13h", 73, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm14h", 74, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm15h", 75, 1, NULL, 128, "uint128");
>
> feature = tdesc_create_feature (result, "org.gnu.gdb.i386.mpx");
> type = tdesc_create_struct (feature, "br128");
> @@ -200,12 +204,12 @@ initialize_tdesc_x32_avx512_linux (void)
> field_type = tdesc_named_type (feature, "_bndcfgu");
> tdesc_add_field (type, "config", field_type);
>
> - tdesc_create_reg (feature, "bnd0raw", 74, 1, NULL, 128, "br128");
> - tdesc_create_reg (feature, "bnd1raw", 75, 1, NULL, 128, "br128");
> - tdesc_create_reg (feature, "bnd2raw", 76, 1, NULL, 128, "br128");
> - tdesc_create_reg (feature, "bnd3raw", 77, 1, NULL, 128, "br128");
> - tdesc_create_reg (feature, "bndcfgu", 78, 1, NULL, 64, "cfgu");
> - tdesc_create_reg (feature, "bndstatus", 79, 1, NULL, 64, "status");
> + tdesc_create_reg (feature, "bnd0raw", 76, 1, NULL, 128, "br128");
> + tdesc_create_reg (feature, "bnd1raw", 77, 1, NULL, 128, "br128");
> + tdesc_create_reg (feature, "bnd2raw", 78, 1, NULL, 128, "br128");
> + tdesc_create_reg (feature, "bnd3raw", 79, 1, NULL, 128, "br128");
> + tdesc_create_reg (feature, "bndcfgu", 80, 1, NULL, 64, "cfgu");
> + tdesc_create_reg (feature, "bndstatus", 81, 1, NULL, 64, "status");
>
> feature = tdesc_create_feature (result, "org.gnu.gdb.i386.avx512");
> field_type = tdesc_named_type (feature, "ieee_single");
> @@ -245,78 +249,78 @@ initialize_tdesc_x32_avx512_linux (void)
> field_type = tdesc_named_type (feature, "uint128");
> tdesc_create_vector (feature, "v2ui128", field_type, 2);
>
> - tdesc_create_reg (feature, "xmm16", 80, 1, NULL, 128, "vec128");
> - tdesc_create_reg (feature, "xmm17", 81, 1, NULL, 128, "vec128");
> - tdesc_create_reg (feature, "xmm18", 82, 1, NULL, 128, "vec128");
> - tdesc_create_reg (feature, "xmm19", 83, 1, NULL, 128, "vec128");
> - tdesc_create_reg (feature, "xmm20", 84, 1, NULL, 128, "vec128");
> - tdesc_create_reg (feature, "xmm21", 85, 1, NULL, 128, "vec128");
> - tdesc_create_reg (feature, "xmm22", 86, 1, NULL, 128, "vec128");
> - tdesc_create_reg (feature, "xmm23", 87, 1, NULL, 128, "vec128");
> - tdesc_create_reg (feature, "xmm24", 88, 1, NULL, 128, "vec128");
> - tdesc_create_reg (feature, "xmm25", 89, 1, NULL, 128, "vec128");
> - tdesc_create_reg (feature, "xmm26", 90, 1, NULL, 128, "vec128");
> - tdesc_create_reg (feature, "xmm27", 91, 1, NULL, 128, "vec128");
> - tdesc_create_reg (feature, "xmm28", 92, 1, NULL, 128, "vec128");
> - tdesc_create_reg (feature, "xmm29", 93, 1, NULL, 128, "vec128");
> - tdesc_create_reg (feature, "xmm30", 94, 1, NULL, 128, "vec128");
> - tdesc_create_reg (feature, "xmm31", 95, 1, NULL, 128, "vec128");
> - tdesc_create_reg (feature, "ymm16h", 96, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm17h", 97, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm18h", 98, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm19h", 99, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm20h", 100, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm21h", 101, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm22h", 102, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm23h", 103, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm24h", 104, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm25h", 105, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm26h", 106, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm27h", 107, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm28h", 108, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm29h", 109, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm30h", 110, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "ymm31h", 111, 1, NULL, 128, "uint128");
> - tdesc_create_reg (feature, "k0", 112, 1, NULL, 64, "uint64");
> - tdesc_create_reg (feature, "k1", 113, 1, NULL, 64, "uint64");
> - tdesc_create_reg (feature, "k2", 114, 1, NULL, 64, "uint64");
> - tdesc_create_reg (feature, "k3", 115, 1, NULL, 64, "uint64");
> - tdesc_create_reg (feature, "k4", 116, 1, NULL, 64, "uint64");
> - tdesc_create_reg (feature, "k5", 117, 1, NULL, 64, "uint64");
> - tdesc_create_reg (feature, "k6", 118, 1, NULL, 64, "uint64");
> - tdesc_create_reg (feature, "k7", 119, 1, NULL, 64, "uint64");
> - tdesc_create_reg (feature, "zmm0h", 120, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm1h", 121, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm2h", 122, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm3h", 123, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm4h", 124, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm5h", 125, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm6h", 126, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm7h", 127, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm8h", 128, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm9h", 129, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm10h", 130, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm11h", 131, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm12h", 132, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm13h", 133, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm14h", 134, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm15h", 135, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm16h", 136, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm17h", 137, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm18h", 138, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm19h", 139, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm20h", 140, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm21h", 141, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm22h", 142, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm23h", 143, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm24h", 144, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm25h", 145, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm26h", 146, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm27h", 147, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm28h", 148, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm29h", 149, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm30h", 150, 1, NULL, 256, "v2ui128");
> - tdesc_create_reg (feature, "zmm31h", 151, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "xmm16", 82, 1, NULL, 128, "vec128");
> + tdesc_create_reg (feature, "xmm17", 83, 1, NULL, 128, "vec128");
> + tdesc_create_reg (feature, "xmm18", 84, 1, NULL, 128, "vec128");
> + tdesc_create_reg (feature, "xmm19", 85, 1, NULL, 128, "vec128");
> + tdesc_create_reg (feature, "xmm20", 86, 1, NULL, 128, "vec128");
> + tdesc_create_reg (feature, "xmm21", 87, 1, NULL, 128, "vec128");
> + tdesc_create_reg (feature, "xmm22", 88, 1, NULL, 128, "vec128");
> + tdesc_create_reg (feature, "xmm23", 89, 1, NULL, 128, "vec128");
> + tdesc_create_reg (feature, "xmm24", 90, 1, NULL, 128, "vec128");
> + tdesc_create_reg (feature, "xmm25", 91, 1, NULL, 128, "vec128");
> + tdesc_create_reg (feature, "xmm26", 92, 1, NULL, 128, "vec128");
> + tdesc_create_reg (feature, "xmm27", 93, 1, NULL, 128, "vec128");
> + tdesc_create_reg (feature, "xmm28", 94, 1, NULL, 128, "vec128");
> + tdesc_create_reg (feature, "xmm29", 95, 1, NULL, 128, "vec128");
> + tdesc_create_reg (feature, "xmm30", 96, 1, NULL, 128, "vec128");
> + tdesc_create_reg (feature, "xmm31", 97, 1, NULL, 128, "vec128");
> + tdesc_create_reg (feature, "ymm16h", 98, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm17h", 99, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm18h", 100, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm19h", 101, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm20h", 102, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm21h", 103, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm22h", 104, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm23h", 105, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm24h", 106, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm25h", 107, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm26h", 108, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm27h", 109, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm28h", 110, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm29h", 111, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm30h", 112, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "ymm31h", 113, 1, NULL, 128, "uint128");
> + tdesc_create_reg (feature, "k0", 114, 1, NULL, 64, "uint64");
> + tdesc_create_reg (feature, "k1", 115, 1, NULL, 64, "uint64");
> + tdesc_create_reg (feature, "k2", 116, 1, NULL, 64, "uint64");
> + tdesc_create_reg (feature, "k3", 117, 1, NULL, 64, "uint64");
> + tdesc_create_reg (feature, "k4", 118, 1, NULL, 64, "uint64");
> + tdesc_create_reg (feature, "k5", 119, 1, NULL, 64, "uint64");
> + tdesc_create_reg (feature, "k6", 120, 1, NULL, 64, "uint64");
> + tdesc_create_reg (feature, "k7", 121, 1, NULL, 64, "uint64");
> + tdesc_create_reg (feature, "zmm0h", 122, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm1h", 123, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm2h", 124, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm3h", 125, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm4h", 126, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm5h", 127, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm6h", 128, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm7h", 129, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm8h", 130, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm9h", 131, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm10h", 132, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm11h", 133, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm12h", 134, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm13h", 135, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm14h", 136, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm15h", 137, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm16h", 138, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm17h", 139, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm18h", 140, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm19h", 141, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm20h", 142, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm21h", 143, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm22h", 144, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm23h", 145, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm24h", 146, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm25h", 147, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm26h", 148, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm27h", 149, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm28h", 150, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm29h", 151, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm30h", 152, 1, NULL, 256, "v2ui128");
> + tdesc_create_reg (feature, "zmm31h", 153, 1, NULL, 256, "v2ui128");
>
> tdesc_x32_avx512_linux = result;
> }
> diff --git a/gdb/features/i386/x32-avx512-linux.xml b/gdb/features/i386/x32-avx512-linux.xml
> index 73238dc..7266c8e 100644
> --- a/gdb/features/i386/x32-avx512-linux.xml
> +++ b/gdb/features/i386/x32-avx512-linux.xml
> @@ -14,6 +14,7 @@
> <xi:include href="x32-core.xml"/>
> <xi:include href="64bit-sse.xml"/>
> <xi:include href="64bit-linux.xml"/>
> + <xi:include href="64bit-segments.xml"/>
> <xi:include href="64bit-avx.xml"/>
> <xi:include href="64bit-mpx.xml"/>
> <xi:include href="64bit-avx512.xml"/>
> diff --git a/gdb/features/i386/x32-linux.c b/gdb/features/i386/x32-linux.c
> index 1262688..ae49549 100644
> --- a/gdb/features/i386/x32-linux.c
> +++ b/gdb/features/i386/x32-linux.c
> @@ -151,5 +151,9 @@ initialize_tdesc_x32_linux (void)
> feature = tdesc_create_feature (result, "org.gnu.gdb.i386.linux");
> tdesc_create_reg (feature, "orig_rax", 57, 1, NULL, 64, "int");
>
> + feature = tdesc_create_feature (result, "org.gnu.gdb.i386.segments");
> + tdesc_create_reg (feature, "fs_base", 58, 1, NULL, 64, "int");
> + tdesc_create_reg (feature, "gs_base", 59, 1, NULL, 64, "int");
> +
> tdesc_x32_linux = result;
> }
> diff --git a/gdb/features/i386/x32-linux.xml b/gdb/features/i386/x32-linux.xml
> index a7d0899..023a48d 100644
> --- a/gdb/features/i386/x32-linux.xml
> +++ b/gdb/features/i386/x32-linux.xml
> @@ -14,4 +14,5 @@
> <xi:include href="x32-core.xml"/>
> <xi:include href="64bit-sse.xml"/>
> <xi:include href="64bit-linux.xml"/>
> + <xi:include href="64bit-segments.xml"/>
> </target>
> diff --git a/gdb/gdbserver/configure.srv b/gdb/gdbserver/configure.srv
> index 3267599..d03dcb9 100644
> --- a/gdb/gdbserver/configure.srv
> +++ b/gdb/gdbserver/configure.srv
> @@ -35,7 +35,7 @@ ipa_x32_linux_regobj="x32-linux-ipa.o x32-avx-linux-ipa.o x32-avx512-linux-ipa.o
> ipa_ppc_linux_regobj="powerpc-32l-ipa.o powerpc-altivec32l-ipa.o powerpc-cell32l-ipa.o powerpc-vsx32l-ipa.o powerpc-isa205-32l-ipa.o powerpc-isa205-altivec32l-ipa.o powerpc-isa205-vsx32l-ipa.o powerpc-e500l-ipa.o powerpc-64l-ipa.o powerpc-altivec64l-ipa.o powerpc-cell64l-ipa.o powerpc-vsx64l-ipa.o powerpc-isa205-64l-ipa.o powerpc-isa205-altivec64l-ipa.o powerpc-isa205-vsx64l-ipa.o"
>
> srv_i386_32bit_xmlfiles="i386/32bit-core.xml i386/32bit-sse.xml i386/32bit-avx.xml i386/32bit-avx512.xml i386/32bit-mpx.xml"
> -srv_i386_64bit_xmlfiles="i386/64bit-core.xml i386/64bit-sse.xml i386/64bit-avx.xml i386/64bit-avx512.xml i386/x32-core.xml i386/64bit-mpx.xml"
> +srv_i386_64bit_xmlfiles="i386/64bit-core.xml i386/64bit-segments.xml i386/64bit-sse.xml i386/64bit-avx.xml i386/64bit-avx512.xml i386/x32-core.xml i386/64bit-mpx.xml"
> srv_i386_xmlfiles="i386/i386.xml i386/i386-avx.xml i386/i386-avx512.xml i386/i386-mpx.xml i386/i386-avx-mpx.xml i386/i386-mmx.xml $srv_i386_32bit_xmlfiles"
> srv_amd64_xmlfiles="i386/amd64.xml i386/amd64-avx.xml i386/amd64-avx512.xml i386/x32.xml i386/x32-avx.xml i386/x32-avx512.xml i386/amd64-mpx.xml i386/amd64-avx-mpx.xml $srv_i386_64bit_xmlfiles"
> srv_i386_linux_xmlfiles="i386/i386-linux.xml i386/i386-avx-linux.xml i386/i386-avx512-linux.xml i386/i386-mmx-linux.xml i386/32bit-linux.xml i386/i386-mpx-linux.xml i386/i386-avx-mpx-linux.xml $srv_i386_32bit_xmlfiles"
> diff --git a/gdb/gdbserver/linux-x86-low.c b/gdb/gdbserver/linux-x86-low.c
> index dd9538a..8fdf324 100644
> --- a/gdb/gdbserver/linux-x86-low.c
> +++ b/gdb/gdbserver/linux-x86-low.c
> @@ -133,6 +133,11 @@ static const int x86_64_regmap[] =
> -1,
> -1, -1, -1, -1, -1, -1, -1, -1,
> ORIG_RAX * 8,
> +#ifdef HAVE_STRUCT_USER_REGS_STRUCT_FS_BASE
> + 21 * 8, 22 * 8,
> +#else
> + -1, -1,
> +#endif
> -1, -1, -1, -1, /* MPX registers BND0 ... BND3. */
> -1, -1, /* MPX registers BNDCFGU, BNDSTATUS. */
> -1, -1, -1, -1, -1, -1, -1, -1, /* xmm16 ... xmm31 (AVX512) */
> @@ -306,6 +311,20 @@ x86_fill_gregset (struct regcache *regcache, void *buf)
> for (i = 0; i < X86_64_NUM_REGS; i++)
> if (x86_64_regmap[i] != -1)
> collect_register (regcache, i, ((char *) buf) + x86_64_regmap[i]);
> +
> +#ifndef HAVE_STRUCT_USER_REGS_STRUCT_FS_BASE
> + {
> + unsigned long base;
> + int lwpid = lwpid_of (current_thread);
> +
> + collect_register_by_name (regcache, "fs_base", &base);
> + ptrace (PTRACE_ARCH_PRCTL, lwpid, &base, ARCH_SET_FS);
> +
> + collect_register_by_name (regcache, "gs_base", &base);
> + ptrace (PTRACE_ARCH_PRCTL, lwpid, &base, ARCH_SET_GS);
> + }
> +#endif
> +
> return;
> }
>
> @@ -332,6 +351,19 @@ x86_store_gregset (struct regcache *regcache, const void *buf)
> for (i = 0; i < X86_64_NUM_REGS; i++)
> if (x86_64_regmap[i] != -1)
> supply_register (regcache, i, ((char *) buf) + x86_64_regmap[i]);
> +
> +#ifndef HAVE_STRUCT_USER_REGS_STRUCT_FS_BASE
> + {
> + unsigned long base;
> + int lwpid = lwpid_of (current_thread);
> +
> + if (ptrace (PTRACE_ARCH_PRCTL, lwpid, &base, ARCH_GET_FS) == 0)
> + supply_register_by_name (regcache, "fs_base", &base);
> +
> + if (ptrace (PTRACE_ARCH_PRCTL, lwpid, &base, ARCH_GET_GS) == 0)
> + supply_register_by_name (regcache, "gs_base", &base);
> + }
> +#endif
> return;
> }
> #endif
> diff --git a/gdb/regformats/i386/amd64-avx-linux.dat b/gdb/regformats/i386/amd64-avx-linux.dat
> index d8199da..7780b3b 100644
> --- a/gdb/regformats/i386/amd64-avx-linux.dat
> +++ b/gdb/regformats/i386/amd64-avx-linux.dat
> @@ -61,6 +61,8 @@ expedite:rbp,rsp,rip
> 128:xmm15
> 32:mxcsr
> 64:orig_rax
> +64:fs_base
> +64:gs_base
> 128:ymm0h
> 128:ymm1h
> 128:ymm2h
> diff --git a/gdb/regformats/i386/amd64-avx-mpx-linux.dat b/gdb/regformats/i386/amd64-avx-mpx-linux.dat
> index 6d45324..7c2f928 100644
> --- a/gdb/regformats/i386/amd64-avx-mpx-linux.dat
> +++ b/gdb/regformats/i386/amd64-avx-mpx-linux.dat
> @@ -61,6 +61,8 @@ expedite:rbp,rsp,rip
> 128:xmm15
> 32:mxcsr
> 64:orig_rax
> +64:fs_base
> +64:gs_base
> 128:ymm0h
> 128:ymm1h
> 128:ymm2h
> diff --git a/gdb/regformats/i386/amd64-avx512-linux.dat b/gdb/regformats/i386/amd64-avx512-linux.dat
> index dfc41e2..f1658d3 100644
> --- a/gdb/regformats/i386/amd64-avx512-linux.dat
> +++ b/gdb/regformats/i386/amd64-avx512-linux.dat
> @@ -61,6 +61,8 @@ expedite:rbp,rsp,rip
> 128:xmm15
> 32:mxcsr
> 64:orig_rax
> +64:fs_base
> +64:gs_base
> 128:ymm0h
> 128:ymm1h
> 128:ymm2h
> diff --git a/gdb/regformats/i386/amd64-linux.dat b/gdb/regformats/i386/amd64-linux.dat
> index 6914cc4..cd16a15 100644
> --- a/gdb/regformats/i386/amd64-linux.dat
> +++ b/gdb/regformats/i386/amd64-linux.dat
> @@ -61,3 +61,5 @@ expedite:rbp,rsp,rip
> 128:xmm15
> 32:mxcsr
> 64:orig_rax
> +64:fs_base
> +64:gs_base
> diff --git a/gdb/regformats/i386/amd64-mpx-linux.dat b/gdb/regformats/i386/amd64-mpx-linux.dat
> index 523ae01..10487f6 100644
> --- a/gdb/regformats/i386/amd64-mpx-linux.dat
> +++ b/gdb/regformats/i386/amd64-mpx-linux.dat
> @@ -61,6 +61,8 @@ expedite:rbp,rsp,rip
> 128:xmm15
> 32:mxcsr
> 64:orig_rax
> +64:fs_base
> +64:gs_base
> 128:bnd0raw
> 128:bnd1raw
> 128:bnd2raw
> diff --git a/gdb/regformats/i386/x32-avx-linux.dat b/gdb/regformats/i386/x32-avx-linux.dat
> index a2b8d02..eb0e3953 100644
> --- a/gdb/regformats/i386/x32-avx-linux.dat
> +++ b/gdb/regformats/i386/x32-avx-linux.dat
> @@ -61,6 +61,8 @@ expedite:rbp,rsp,rip
> 128:xmm15
> 32:mxcsr
> 64:orig_rax
> +64:fs_base
> +64:gs_base
> 128:ymm0h
> 128:ymm1h
> 128:ymm2h
> diff --git a/gdb/regformats/i386/x32-avx512-linux.dat b/gdb/regformats/i386/x32-avx512-linux.dat
> index 0f5b2ce..0b7f73a 100644
> --- a/gdb/regformats/i386/x32-avx512-linux.dat
> +++ b/gdb/regformats/i386/x32-avx512-linux.dat
> @@ -61,6 +61,8 @@ expedite:rbp,rsp,rip
> 128:xmm15
> 32:mxcsr
> 64:orig_rax
> +64:fs_base
> +64:gs_base
> 128:ymm0h
> 128:ymm1h
> 128:ymm2h
> diff --git a/gdb/regformats/i386/x32-linux.dat b/gdb/regformats/i386/x32-linux.dat
> index d976a25..eee378f 100644
> --- a/gdb/regformats/i386/x32-linux.dat
> +++ b/gdb/regformats/i386/x32-linux.dat
> @@ -61,3 +61,5 @@ expedite:rbp,rsp,rip
> 128:xmm15
> 32:mxcsr
> 64:orig_rax
> +64:fs_base
> +64:gs_base
> diff --git a/gdb/testsuite/gdb.arch/amd64-gs_base.c b/gdb/testsuite/gdb.arch/amd64-gs_base.c
> new file mode 100644
> index 0000000..d0a2a8f
> --- /dev/null
> +++ b/gdb/testsuite/gdb.arch/amd64-gs_base.c
> @@ -0,0 +1,26 @@
> +/* Test program for fs_base and gs_base.
> +
> + Copyright 2016 Free Software Foundation, Inc.
> +
2017
> + This file is part of GDB.
> +
> + This program is free software; you can redistribute it and/or modify
> + it under the terms of the GNU General Public License as published by
> + the Free Software Foundation; either version 3 of the License, or
> + (at your option) any later version.
> +
> + This program is distributed in the hope that it will be useful,
> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + GNU General Public License for more details.
> +
> + You should have received a copy of the GNU General Public License
> + along with this program. If not, see <http://www.gnu.org/licenses/>. */
> +
> +int
> +main (void)
> +{
> + volatile int a;
> + a = 10;
> + return a;
> +}
> diff --git a/gdb/testsuite/gdb.arch/amd64-gs_base.exp b/gdb/testsuite/gdb.arch/amd64-gs_base.exp
> new file mode 100644
> index 0000000..f2dc887
> --- /dev/null
> +++ b/gdb/testsuite/gdb.arch/amd64-gs_base.exp
> @@ -0,0 +1,51 @@
> +# Copyright 2016 Free Software Foundation, Inc.
> +
2017
> +# Contributed by Intel Corp. <walfred.tedeschi@intel.com>
> +
As discussed recently, these contribution notices should be moved to the
manual if one wishes to expose it.
> +# This program is free software; you can redistribute it and/or modify
> +# it under the terms of the GNU General Public License as published by
> +# the Free Software Foundation; either version 3 of the License, or
> +# (at your option) any later version.
> +#
> +# This program is distributed in the hope that it will be useful,
> +# but WITHOUT ANY WARRANTY; without even the implied warranty of
> +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> +# GNU General Public License for more details.
> +#
> +# You should have received a copy of the GNU General Public License
> +# along with this program. If not, see <http://www.gnu.org/licenses/>.
> +
> +standard_testfile
> +
> +if { ![istarget "x86_64-*linux*"] } then {
> + verbose "Skipping x86_64 fs_base and gs_base tests."
I think untested would be better here.
> + return
> +}
> +
> +if { [prepare_for_testing ${testfile}.exp ${testfile} ${srcfile} \
"failed to prepare" as opposed to ${testfile}.exp
> + [list debug nowarnings]] } {
> + return -1
> +}
> +
> +if ![runto_main] {
> + untested "could not run to main"
> + return -1
> +}
> +
> +gdb_test "print /x \$fs_base" "= $hex" "print fs_base"
> +gdb_test "print /x \$gs_base" "= $hex" "print gs_base"
> +
> +gdb_test "print \$fs_base = 2" "= 2" "set fs_base"
> +gdb_test "print \$gs_base = 3" "= 3" "set gs_base"
> +
> +# Test the presence of fs_base and gs_base on the system
> +# register group and values.
> +#
> +set ws "\[\t \]*"
> +set info_reg_out [multi_line "info register sys" \
> + "fs_base${ws}0x2${ws}2"\
> + "gs_base${ws}0x3${ws}3"\
> + "orig_rax${ws}$hex${ws}\[-\]$decimal" ]
> +
> +gdb_test "info register sys" $info_reg_out\
> + "info registers fs_base and gs_base with value"
>
Otherwise i have no further comments.
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