42a4f53d2b
This commit applies all changes made after running the gdb/copyright.py script. Note that one file was flagged by the script, due to an invalid copyright header (gdb/unittests/basic_string_view/element_access/char/empty.cc). As the file was copied from GCC's libstdc++-v3 testsuite, this commit leaves this file untouched for the time being; a patch to fix the header was sent to gcc-patches first. gdb/ChangeLog: Update copyright year range in all GDB files.
165 lines
3.8 KiB
C
165 lines
3.8 KiB
C
/* GNU/Linux/x86-64 specific target description, for the remote server
|
|
for GDB.
|
|
Copyright (C) 2017-2019 Free Software Foundation, Inc.
|
|
|
|
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/>. */
|
|
|
|
#include "server.h"
|
|
#include "tdesc.h"
|
|
#include "linux-x86-tdesc.h"
|
|
#include "arch/i386.h"
|
|
#include "common/x86-xstate.h"
|
|
#ifdef __x86_64__
|
|
#include "arch/amd64.h"
|
|
#endif
|
|
#include "x86-tdesc.h"
|
|
|
|
/* Return the right x86_linux_tdesc index for a given XCR0. Return
|
|
X86_TDESC_LAST if can't find a match. */
|
|
|
|
static enum x86_linux_tdesc
|
|
xcr0_to_tdesc_idx (uint64_t xcr0, bool is_x32)
|
|
{
|
|
if (xcr0 & X86_XSTATE_PKRU)
|
|
{
|
|
if (is_x32)
|
|
{
|
|
/* No x32 MPX and PKU, fall back to avx_avx512. */
|
|
return X86_TDESC_AVX_AVX512;
|
|
}
|
|
else
|
|
return X86_TDESC_AVX_MPX_AVX512_PKU;
|
|
}
|
|
else if (xcr0 & X86_XSTATE_AVX512)
|
|
return X86_TDESC_AVX_AVX512;
|
|
else if ((xcr0 & X86_XSTATE_AVX_MPX_MASK) == X86_XSTATE_AVX_MPX_MASK)
|
|
{
|
|
if (is_x32) /* No MPX on x32. */
|
|
return X86_TDESC_AVX;
|
|
else
|
|
return X86_TDESC_AVX_MPX;
|
|
}
|
|
else if (xcr0 & X86_XSTATE_MPX)
|
|
{
|
|
if (is_x32) /* No MPX on x32. */
|
|
return X86_TDESC_AVX;
|
|
else
|
|
return X86_TDESC_MPX;
|
|
}
|
|
else if (xcr0 & X86_XSTATE_AVX)
|
|
return X86_TDESC_AVX;
|
|
else if (xcr0 & X86_XSTATE_SSE)
|
|
return X86_TDESC_SSE;
|
|
else if (xcr0 & X86_XSTATE_X87)
|
|
return X86_TDESC_MMX;
|
|
else
|
|
return X86_TDESC_LAST;
|
|
}
|
|
|
|
#if defined __i386__ || !defined IN_PROCESS_AGENT
|
|
|
|
static struct target_desc *i386_tdescs[X86_TDESC_LAST] = { };
|
|
|
|
/* Return the target description according to XCR0. */
|
|
|
|
const struct target_desc *
|
|
i386_linux_read_description (uint64_t xcr0)
|
|
{
|
|
enum x86_linux_tdesc idx = xcr0_to_tdesc_idx (xcr0, false);
|
|
|
|
if (idx == X86_TDESC_LAST)
|
|
return NULL;
|
|
|
|
struct target_desc **tdesc = &i386_tdescs[idx];
|
|
|
|
if (*tdesc == NULL)
|
|
{
|
|
*tdesc = i386_create_target_description (xcr0, true);
|
|
|
|
init_target_desc (*tdesc, i386_expedite_regs);
|
|
}
|
|
|
|
return *tdesc;;
|
|
}
|
|
#endif
|
|
|
|
#ifdef __x86_64__
|
|
|
|
static target_desc *amd64_tdescs[X86_TDESC_LAST] = { };
|
|
static target_desc *x32_tdescs[X86_TDESC_LAST] = { };
|
|
|
|
const struct target_desc *
|
|
amd64_linux_read_description (uint64_t xcr0, bool is_x32)
|
|
{
|
|
enum x86_linux_tdesc idx = xcr0_to_tdesc_idx (xcr0, is_x32);
|
|
|
|
if (idx == X86_TDESC_LAST)
|
|
return NULL;
|
|
|
|
struct target_desc **tdesc = NULL;
|
|
|
|
if (is_x32)
|
|
tdesc = &x32_tdescs[idx];
|
|
else
|
|
tdesc = &amd64_tdescs[idx];
|
|
|
|
if (*tdesc == NULL)
|
|
{
|
|
*tdesc = amd64_create_target_description (xcr0, is_x32, true, true);
|
|
|
|
init_target_desc (*tdesc, amd64_expedite_regs);
|
|
}
|
|
return *tdesc;
|
|
}
|
|
|
|
#endif
|
|
|
|
#ifndef IN_PROCESS_AGENT
|
|
|
|
int
|
|
i386_get_ipa_tdesc_idx (const struct target_desc *tdesc)
|
|
{
|
|
for (int i = 0; i < X86_TDESC_LAST; i++)
|
|
{
|
|
if (tdesc == i386_tdescs[i])
|
|
return i;
|
|
}
|
|
|
|
/* If none tdesc is found, return the one with minimum features. */
|
|
return X86_TDESC_MMX;
|
|
}
|
|
|
|
#if defined __x86_64__
|
|
int
|
|
amd64_get_ipa_tdesc_idx (const struct target_desc *tdesc)
|
|
{
|
|
for (int i = 0; i < X86_TDESC_LAST; i++)
|
|
{
|
|
if (tdesc == amd64_tdescs[i])
|
|
return i;
|
|
}
|
|
for (int i = 0; i < X86_TDESC_LAST; i++)
|
|
{
|
|
if (tdesc == x32_tdescs[i])
|
|
return i;
|
|
}
|
|
|
|
return X86_TDESC_SSE;
|
|
}
|
|
|
|
#endif
|
|
#endif
|