binutils-gdb/gdb/gdbserver/linux-x86-tdesc.c

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[GDBserver] Centralize tdesc for i386-linux tdesc_i386_XXX_linux is used in many places in linux-x86-low.c and this patch adds a new function i386_linux_read_description to return the right tdesc according to xcr0. i386_linux_read_description is quite similar to the counterpart in GDB, and the following patch will share the duplicated code, so this patch adds arch/tdesc.h includes the declarations of various tdesc apis which are used by the shared code. The generated c feature files can include arch/tdesc.h only. gdb/gdbserver: 2017-09-05 Yao Qi <yao.qi@linaro.org> * configure.srv (srv_tgtobj): Append linux-x86-tdesc.o. (ipa_obj): Likewise. * linux-i386-ipa.c: Include common/x86-xstate.h (get_ipa_tdesc): Call i386_linux_read_description. (initialize_low_tracepoint): Don't call init_registers_XXX functions, call initialize_low_tdesc instead. * linux-x86-low.c (x86_linux_read_description): Call i386_linux_read_description. (initialize_low_arch): Don't call init_registers_i386_XXX functions, call initialize_low_tdesc. * linux-x86-tdesc.c: New file. * linux-x86-tdesc.h (x86_linux_tdesc): New X86_TDESC_LAST. (i386_get_ipa_tdesc_idx): Declare. (i386_get_ipa_tdesc): Declare. (initialize_low_tdesc): Declare. gdb: 2017-09-05 Yao Qi <yao.qi@linaro.org> * arch/tdesc.h: New file. * regformats/regdat.sh: Generate code using tdesc_create_reg. * target-descriptions.c: Update comments. * target-descriptions.h: Include "arch/tdesc.h". Remove the declarations. * features/i386/32bit-avx.c: Re-generated. * features/i386/32bit-avx512.c: Re-generated. * features/i386/32bit-core.c: Re-generated. * features/i386/32bit-linux.c: Re-generated. * features/i386/32bit-mpx.c: Re-generated. * features/i386/32bit-pkeys.c: Re-generated. * features/i386/32bit-sse.c: Re-generated.
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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"
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#include "arch/i386.h"
#include "common/x86-xstate.h"
[GDBserver] Centralize tdesc for i386-linux tdesc_i386_XXX_linux is used in many places in linux-x86-low.c and this patch adds a new function i386_linux_read_description to return the right tdesc according to xcr0. i386_linux_read_description is quite similar to the counterpart in GDB, and the following patch will share the duplicated code, so this patch adds arch/tdesc.h includes the declarations of various tdesc apis which are used by the shared code. The generated c feature files can include arch/tdesc.h only. gdb/gdbserver: 2017-09-05 Yao Qi <yao.qi@linaro.org> * configure.srv (srv_tgtobj): Append linux-x86-tdesc.o. (ipa_obj): Likewise. * linux-i386-ipa.c: Include common/x86-xstate.h (get_ipa_tdesc): Call i386_linux_read_description. (initialize_low_tracepoint): Don't call init_registers_XXX functions, call initialize_low_tdesc instead. * linux-x86-low.c (x86_linux_read_description): Call i386_linux_read_description. (initialize_low_arch): Don't call init_registers_i386_XXX functions, call initialize_low_tdesc. * linux-x86-tdesc.c: New file. * linux-x86-tdesc.h (x86_linux_tdesc): New X86_TDESC_LAST. (i386_get_ipa_tdesc_idx): Declare. (i386_get_ipa_tdesc): Declare. (initialize_low_tdesc): Declare. gdb: 2017-09-05 Yao Qi <yao.qi@linaro.org> * arch/tdesc.h: New file. * regformats/regdat.sh: Generate code using tdesc_create_reg. * target-descriptions.c: Update comments. * target-descriptions.h: Include "arch/tdesc.h". Remove the declarations. * features/i386/32bit-avx.c: Re-generated. * features/i386/32bit-avx512.c: Re-generated. * features/i386/32bit-core.c: Re-generated. * features/i386/32bit-linux.c: Re-generated. * features/i386/32bit-mpx.c: Re-generated. * features/i386/32bit-pkeys.c: Re-generated. * features/i386/32bit-sse.c: Re-generated.
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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)
{
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*tdesc = i386_create_target_description (xcr0);
[GDBserver] Centralize tdesc for i386-linux tdesc_i386_XXX_linux is used in many places in linux-x86-low.c and this patch adds a new function i386_linux_read_description to return the right tdesc according to xcr0. i386_linux_read_description is quite similar to the counterpart in GDB, and the following patch will share the duplicated code, so this patch adds arch/tdesc.h includes the declarations of various tdesc apis which are used by the shared code. The generated c feature files can include arch/tdesc.h only. gdb/gdbserver: 2017-09-05 Yao Qi <yao.qi@linaro.org> * configure.srv (srv_tgtobj): Append linux-x86-tdesc.o. (ipa_obj): Likewise. * linux-i386-ipa.c: Include common/x86-xstate.h (get_ipa_tdesc): Call i386_linux_read_description. (initialize_low_tracepoint): Don't call init_registers_XXX functions, call initialize_low_tdesc instead. * linux-x86-low.c (x86_linux_read_description): Call i386_linux_read_description. (initialize_low_arch): Don't call init_registers_i386_XXX functions, call initialize_low_tdesc. * linux-x86-tdesc.c: New file. * linux-x86-tdesc.h (x86_linux_tdesc): New X86_TDESC_LAST. (i386_get_ipa_tdesc_idx): Declare. (i386_get_ipa_tdesc): Declare. (initialize_low_tdesc): Declare. gdb: 2017-09-05 Yao Qi <yao.qi@linaro.org> * arch/tdesc.h: New file. * regformats/regdat.sh: Generate code using tdesc_create_reg. * target-descriptions.c: Update comments. * target-descriptions.h: Include "arch/tdesc.h". Remove the declarations. * features/i386/32bit-avx.c: Re-generated. * features/i386/32bit-avx512.c: Re-generated. * features/i386/32bit-core.c: Re-generated. * features/i386/32bit-linux.c: Re-generated. * features/i386/32bit-mpx.c: Re-generated. * features/i386/32bit-pkeys.c: Re-generated. * features/i386/32bit-sse.c: Re-generated.
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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