1163a4b7a3
As on amd64, these registers hold the base address of the fs and gs segments, respectively. For i386 these two registers are 32 bits. gdb/ChangeLog: * amd64-fbsd-nat.c (amd64_fbsd_nat_target::read_description): Update calls to i386_target_description to add 'segments' parameter. * amd64-tdep.c (amd64_init_abi): Set tdep->fsbase_regnum. Don't add segment base registers. * arch/i386.c (i386_create_target_description): Add 'segments' parameter to enable segment base registers. * arch/i386.h (i386_create_target_description): Likewise. * features/i386/32bit-segments.xml: New file. * features/i386/32bit-segments.c: Generate. * i386-fbsd-nat.c (i386_fbsd_nat_target::read_description): Update call to i386_target_description to add 'segments' parameter. * i386-fbsd-tdep.c (i386fbsd_core_read_description): Likewise. * i386-go32-tdep.c (i386_go32_init_abi): Likewise. * i386-linux-tdep.c (i386_linux_read_description): Likewise. * i386-tdep.c (i386_validate_tdesc_p): Add segment base registers if feature is present. (i386_gdbarch_init): Pass I386_NUM_REGS to set_gdbarch_num_regs. Add 'segments' parameter to call to i386_target_description. (i386_target_description): Add 'segments' parameter to enable segment base registers. (_initialize_i386_tdep) [GDB_SELF_TEST]: Add 'segments' parameter to call to i386_target_description. * i386-tdep.h (struct gdbarch_tdep): Add 'fsbase_regnum'. (enum i386_regnum): Add I386_FSBASE_REGNUM and I386_GSBASE_REGNUM. Define I386_NUM_REGS. (i386_target_description): Add 'segments' parameter to enable segment base registers. gdb/gdbserver/ChangeLog: * linux-x86-tdesc.c (i386_linux_read_description): Update call to i386_create_target_description for 'segments' parameter. * lynx-i386-low.c (lynx_i386_arch_setup): Likewise. * nto-x86-low.c (nto_x86_arch_setup): Likewise. * win32-i386-low.c (i386_arch_setup): Likewise.
74 lines
2.2 KiB
C
74 lines
2.2 KiB
C
/* Copyright (C) 2017-2019 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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#include "common/common-defs.h"
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#include "i386.h"
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#include "common/tdesc.h"
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#include "common/x86-xstate.h"
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#include <stdlib.h>
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#include "../features/i386/32bit-core.c"
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#include "../features/i386/32bit-linux.c"
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#include "../features/i386/32bit-sse.c"
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#include "../features/i386/32bit-avx.c"
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#include "../features/i386/32bit-avx512.c"
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#include "../features/i386/32bit-mpx.c"
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#include "../features/i386/32bit-pkeys.c"
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#include "../features/i386/32bit-segments.c"
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/* Create i386 target descriptions according to XCR0. */
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target_desc *
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i386_create_target_description (uint64_t xcr0, bool is_linux, bool segments)
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{
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target_desc *tdesc = allocate_target_description ();
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#ifndef IN_PROCESS_AGENT
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set_tdesc_architecture (tdesc, "i386");
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if (is_linux)
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set_tdesc_osabi (tdesc, "GNU/Linux");
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#endif
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long regnum = 0;
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if (xcr0 & X86_XSTATE_X87)
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regnum = create_feature_i386_32bit_core (tdesc, regnum);
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if (xcr0 & X86_XSTATE_SSE)
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regnum = create_feature_i386_32bit_sse (tdesc, regnum);
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if (is_linux)
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regnum = create_feature_i386_32bit_linux (tdesc, regnum);
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if (segments)
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regnum = create_feature_i386_32bit_segments (tdesc, regnum);
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if (xcr0 & X86_XSTATE_AVX)
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regnum = create_feature_i386_32bit_avx (tdesc, regnum);
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if (xcr0 & X86_XSTATE_MPX)
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regnum = create_feature_i386_32bit_mpx (tdesc, regnum);
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if (xcr0 & X86_XSTATE_AVX512)
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regnum = create_feature_i386_32bit_avx512 (tdesc, regnum);
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if (xcr0 & X86_XSTATE_PKRU)
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regnum = create_feature_i386_32bit_pkeys (tdesc, regnum);
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return tdesc;
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}
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