2b863f512d
The current MPX target descriptions assume that MPX is always combined with AVX, however that's not correct. We can have machines with MPX and without AVX; or machines with AVX and without MPX. This patch adds new target descriptions for machines that support both MPX and AVX, as duplicates of the existing MPX descriptions. The following commit will remove AVX from the MPX-only descriptions. 2016-04-16 Walfred Tedeschi <walfred.tedeschi@intel.com> gdb/ChangeLog: * amd64-linux-tdep.c (features/i386/amd64-avx-mpx-linux.c): New include. (amd64_linux_core_read_description): Add case for X86_XSTATE_AVX_MPX_MASK. (_initialize_amd64_linux_tdep): Call initialize_tdesc_amd64_avx_mpx_linux. * amd64-linux-tdep.h (tdesc_amd64_avx_mpx_linux): New definition. * amd64-tdep.c (features/i386/amd64-avx-mpx.c): New include. (amd64_target_description): Add case for X86_XSTATE_AVX_MPX_MASK. (_initialize_amd64_tdep): Call initialize_tdesc_amd64_avx_mpx. * common/x86-xstate.h (X86_XSTATE_MPX_MASK): Remove AVX bits. (X86_XSTATE_AVX_MPX_MASK): New case. * features/Makefile (i386/i386-avx-mpx, i386/i386-avx-mpx-linux) (i386/amd64-avx-mpx, i386/amd64-avx-mpx-linux): New rules. (i386/i386-avx-mpx-expedite, i386/i386-avx-mpx-linux-expedite) (i386/amd64-avx-mpx-expedite, i386/amd64-avx-mpx-linux-expedite): New expedites. * i386-linux-tdep.c (features/i386/i386-avx-mpx-linux.c): New include. (i386_linux_core_read_description): Add case X86_XSTATE_AVX_MPX_MASK. (_initialize_i386_linux_tdep): Call initialize_tdesc_i386_avx_mpx_linux. * i386-linux-tdep.h (tdesc_i386_avx_mpx_linux): New include. * i386-tdep.c (features/i386/i386-avx-mpx.c): New include. (i386_target_description): Add case for X86_XSTATE_AVX_MPX_MASK. * x86-linux-nat.c (x86_linux_read_description): Add case for X86_XSTATE_AVX_MPX_MASK. * features/i386/amd64-avx-mpx-linux.xml: New file. * features/i386/i386-avx-mpx-linux.xml: New file. * features/i386/i386-avx-mpx.xml: New file. * features/i386/amd64-avx-mpx.xml: New file. * features/i386/amd64-avx-mpx-linux.c: Generated. * features/i386/amd64-avx-mpx.c: Generated. * features/i386/i386-avx-mpx-linux.c: Generated. * features/i386/i386-avx-mpx.c: Generated. * regformats/i386/amd64-avx-mpx-linux.dat: Generated. * regformats/i386/amd64-avx-mpx.dat: Generated. * regformats/i386/i386-avx-mpx-linux.dat: Generated. * regformats/i386/i386-avx-mpx.dat: Generated. gdb/gdbserver/ChangeLog: * Makefile.in (clean): Add removal for i386-avx-mpx.c, i386-avx-mpx-linux.c, amd64-avx-mpx.c and amd64-avx-mpx-linux.c. (i386-avx-mpx.c, i386-avx-mpx-linux.c, amd64-avx-mpx.c) (amd64-avx-mpx-linux.c): New rules. (amd64-avx-mpx-linux-ipa.o, i386-avx-mpx-linux-ipa.o): New rule. * configure.srv (srv_i386_regobj): Add i386-avx-mpx.o. (srv_i386_linux_regobj): Add i386-avx-mpx-linux.o. (srv_amd64_regobj): Add amd64-avx-mpx.o. (srv_amd64_linux_regobj): Add amd64-avx-mpx-linux.o. (srv_i386_xmlfiles): Add i386/i386-avx-mpx.xml. (srv_amd64_xmlfiles): Add i386/amd64-avx-mpx.xml. (srv_i386_linux_xmlfiles): Add i386/i386-avx-mpx-linux.xml. (srv_amd64_linux_xmlfiles): Add i386/amd64-avx-mpx-linux.xml. (ipa_i386_linux_regobj): Add i386-avx-mpx-linux-ipa.o. (ipa_amd64_linux_regobj): Add amd64-avx-mpx-linux-ipa.o. * linux-x86-low.c (x86_linux_read_description): Add case for X86_XSTATE_AVX_MPX_MASK. (x86_get_ipa_tdesc_idx): Add cases for avx_mpx. (initialize_low_arch): Call init_registers_amd64_avx_mpx_linux and init_registers_i386_avx_mpx_linux. * linux-i386-ipa.c (get_ipa_tdesc): Add case for avx_mpx. (initialize_low_tracepoint): Call init_registers_i386_avx_mpx_linux. * linux-amd64-ipa.c (get_ipa_tdesc): Add case for avx_mpx. (initialize_low_tracepoint): Call init_registers_amd64_avx_mpx_linux. * linux-x86-tdesc.h (X86_TDESC_AVX_MPX): New enum value. (init_registers_amd64_avx_mpx_linux, tdesc_amd64_avx_mpx_linux) (init_registers_i386_avx_mpx_linux, tdesc_i386_avx_mpx_linux): New declarations.
84 lines
3.1 KiB
C
84 lines
3.1 KiB
C
/* Target-dependent code for GNU/Linux x86.
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Copyright (C) 2002-2016 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef I386_LINUX_TDEP_H
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#define I386_LINUX_TDEP_H
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/* The Linux kernel pretends there is an additional "orig_eax"
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register. Since GDB needs access to that register to be able to
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properly restart system calls when necessary (see
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i386-linux-tdep.c) we need our own versions of a number of
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functions that deal with GDB's register cache. */
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/* Register number for the "orig_eax" pseudo-register. If this
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pseudo-register contains a value >= 0 it is interpreted as the
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system call number that the kernel is supposed to restart. */
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#define I386_LINUX_ORIG_EAX_REGNUM (I386_ZMM7H_REGNUM + 1)
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/* Total number of registers for GNU/Linux. */
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#define I386_LINUX_NUM_REGS (I386_LINUX_ORIG_EAX_REGNUM + 1)
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/* Get XSAVE extended state xcr0 from core dump. */
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extern uint64_t i386_linux_core_read_xcr0 (bfd *abfd);
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/* Handle and display information related to the MPX bound violation
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to the user. */
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extern void i386_linux_handle_segmentation_fault (struct gdbarch *gdbarch,
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struct ui_out *uiout);
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/* Linux target description. */
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extern struct target_desc *tdesc_i386_linux;
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extern struct target_desc *tdesc_i386_mmx_linux;
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extern struct target_desc *tdesc_i386_avx_linux;
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extern struct target_desc *tdesc_i386_mpx_linux;
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extern struct target_desc *tdesc_i386_avx_mpx_linux;
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extern struct target_desc *tdesc_i386_avx512_linux;
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/* Format of XSAVE extended state is:
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struct
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{
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fxsave_bytes[0..463]
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sw_usable_bytes[464..511]
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xstate_hdr_bytes[512..575]
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avx_bytes[576..831]
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mpx_bytes [960..1032]
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avx512_k_regs[1088..1152]
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avx512_zmmh_regs0-7[1153..1407]
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avx512_zmmh_regs8-15[1408..1663]
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avx512_zmm_regs16-31[1664..2687]
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future_state etc
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};
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Same memory layout will be used for the coredump NT_X86_XSTATE
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representing the XSAVE extended state registers.
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The first 8 bytes of the sw_usable_bytes[464..467] is the OS enabled
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extended state mask, which is the same as the extended control register
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0 (the XFEATURE_ENABLED_MASK register), XCR0. We can use this mask
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together with the mask saved in the xstate_hdr_bytes to determine what
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states the processor/OS supports and what state, used or initialized,
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the process/thread is in. */
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#define I386_LINUX_XSAVE_XCR0_OFFSET 464
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extern int i386_linux_gregset_reg_offset[];
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/* Return x86 siginfo type. */
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extern struct type *x86_linux_get_siginfo_type (struct gdbarch *gdbarch);
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#endif /* i386-linux-tdep.h */
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