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/* GNU/Linux/x86-64 specific target description, for the remote server
for GDB.
Copyright (C) 2017 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"
static struct target_desc *i386_tdescs[X86_TDESC_LAST] = { };
#if defined __i386__ || !defined IN_PROCESS_AGENT
/* Return the target description according to XCR0. */
const struct target_desc *
i386_linux_read_description (uint64_t xcr0)
{
struct target_desc **tdesc = NULL;
if (xcr0 & X86_XSTATE_PKRU)
tdesc = &i386_tdescs[X86_TDESC_AVX_MPX_AVX512_PKU];
else if (xcr0 & X86_XSTATE_AVX512)
tdesc = &i386_tdescs[X86_TDESC_AVX_AVX512];
else if ((xcr0 & X86_XSTATE_AVX_MPX_MASK) == X86_XSTATE_AVX_MPX_MASK)
tdesc = &i386_tdescs[X86_TDESC_AVX_MPX];
else if (xcr0 & X86_XSTATE_MPX)
tdesc = &i386_tdescs[X86_TDESC_MPX];
else if (xcr0 & X86_XSTATE_AVX)
tdesc = &i386_tdescs[X86_TDESC_AVX];
else if (xcr0 & X86_XSTATE_SSE)
tdesc = &i386_tdescs[X86_TDESC_SSE];
else if (xcr0 & X86_XSTATE_X87)
tdesc = &i386_tdescs[X86_TDESC_MMX];
if (tdesc == NULL)
return NULL;
if (*tdesc == NULL)
{
*tdesc = i386_create_target_description (xcr0);
init_target_desc (*tdesc);
#ifndef IN_PROCESS_AGENT
static const char *expedite_regs_i386[] = { "ebp", "esp", "eip", NULL };
(*tdesc)->expedite_regs = expedite_regs_i386;
#endif
}
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;
}
#endif
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