mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2025-02-17 13:10:12 +08:00
1d506c26d9
This commit is the result of the following actions:
- Running gdb/copyright.py to update all of the copyright headers to
include 2024,
- Manually updating a few files the copyright.py script told me to
update, these files had copyright headers embedded within the
file,
- Regenerating gdbsupport/Makefile.in to refresh it's copyright
date,
- Using grep to find other files that still mentioned 2023. If
these files were updated last year from 2022 to 2023 then I've
updated them this year to 2024.
I'm sure I've probably missed some dates. Feel free to fix them up as
you spot them.
165 lines
3.8 KiB
C++
165 lines
3.8 KiB
C++
/* GNU/Linux/x86-64 specific target description, for the remote server
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for GDB.
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Copyright (C) 2017-2024 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 "server.h"
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#include "tdesc.h"
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#include "linux-x86-tdesc.h"
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#include "arch/i386.h"
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#include "gdbsupport/x86-xstate.h"
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#ifdef __x86_64__
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#include "arch/amd64.h"
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#endif
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#include "x86-tdesc.h"
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/* Return the right x86_linux_tdesc index for a given XCR0. Return
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X86_TDESC_LAST if can't find a match. */
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static enum x86_linux_tdesc
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xcr0_to_tdesc_idx (uint64_t xcr0, bool is_x32)
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{
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if (xcr0 & X86_XSTATE_PKRU)
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{
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if (is_x32)
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{
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/* No x32 MPX and PKU, fall back to avx_avx512. */
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return X86_TDESC_AVX_AVX512;
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}
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else
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return X86_TDESC_AVX_MPX_AVX512_PKU;
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}
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else if (xcr0 & X86_XSTATE_AVX512)
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return X86_TDESC_AVX_AVX512;
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else if ((xcr0 & X86_XSTATE_AVX_MPX_MASK) == X86_XSTATE_AVX_MPX_MASK)
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{
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if (is_x32) /* No MPX on x32. */
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return X86_TDESC_AVX;
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else
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return X86_TDESC_AVX_MPX;
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}
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else if (xcr0 & X86_XSTATE_MPX)
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{
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if (is_x32) /* No MPX on x32. */
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return X86_TDESC_AVX;
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else
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return X86_TDESC_MPX;
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}
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else if (xcr0 & X86_XSTATE_AVX)
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return X86_TDESC_AVX;
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else if (xcr0 & X86_XSTATE_SSE)
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return X86_TDESC_SSE;
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else if (xcr0 & X86_XSTATE_X87)
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return X86_TDESC_MMX;
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else
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return X86_TDESC_LAST;
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}
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#if defined __i386__ || !defined IN_PROCESS_AGENT
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static struct target_desc *i386_tdescs[X86_TDESC_LAST] = { };
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/* Return the target description according to XCR0. */
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const struct target_desc *
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i386_linux_read_description (uint64_t xcr0)
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{
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enum x86_linux_tdesc idx = xcr0_to_tdesc_idx (xcr0, false);
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if (idx == X86_TDESC_LAST)
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return NULL;
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struct target_desc **tdesc = &i386_tdescs[idx];
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if (*tdesc == NULL)
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{
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*tdesc = i386_create_target_description (xcr0, true, false);
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init_target_desc (*tdesc, i386_expedite_regs);
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}
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return *tdesc;;
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}
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#endif
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#ifdef __x86_64__
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static target_desc *amd64_tdescs[X86_TDESC_LAST] = { };
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static target_desc *x32_tdescs[X86_TDESC_LAST] = { };
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const struct target_desc *
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amd64_linux_read_description (uint64_t xcr0, bool is_x32)
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{
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enum x86_linux_tdesc idx = xcr0_to_tdesc_idx (xcr0, is_x32);
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if (idx == X86_TDESC_LAST)
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return NULL;
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struct target_desc **tdesc = NULL;
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if (is_x32)
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tdesc = &x32_tdescs[idx];
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else
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tdesc = &amd64_tdescs[idx];
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if (*tdesc == NULL)
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{
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*tdesc = amd64_create_target_description (xcr0, is_x32, true, true);
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init_target_desc (*tdesc, amd64_expedite_regs);
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}
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return *tdesc;
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}
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#endif
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#ifndef IN_PROCESS_AGENT
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int
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i386_get_ipa_tdesc_idx (const struct target_desc *tdesc)
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{
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for (int i = 0; i < X86_TDESC_LAST; i++)
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{
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if (tdesc == i386_tdescs[i])
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return i;
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}
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/* If none tdesc is found, return the one with minimum features. */
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return X86_TDESC_MMX;
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}
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#if defined __x86_64__
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int
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amd64_get_ipa_tdesc_idx (const struct target_desc *tdesc)
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{
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for (int i = 0; i < X86_TDESC_LAST; i++)
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{
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if (tdesc == amd64_tdescs[i])
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return i;
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}
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for (int i = 0; i < X86_TDESC_LAST; i++)
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{
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if (tdesc == x32_tdescs[i])
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return i;
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}
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return X86_TDESC_SSE;
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}
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#endif
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#endif
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