[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.
This commit is contained in:
Yao Qi
parent
2b68ef2f11
commit
f49ff00066
21 changed files with 492 additions and 167 deletions
177
gdb/gdbserver/linux-x86-tdesc.c
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177
gdb/gdbserver/linux-x86-tdesc.c
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/* GNU/Linux/x86-64 specific target description, for the remote server
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for GDB.
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Copyright (C) 2017 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 "x86-xstate.h"
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#include <inttypes.h>
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#if defined __i386__ || !defined IN_PROCESS_AGENT
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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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/* Defined in auto-generated file i386-linux.c. */
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void init_registers_i386_linux (void);
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extern const struct target_desc *tdesc_i386_linux;
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/* Defined in auto-generated file i386-mmx-linux.c. */
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void init_registers_i386_mmx_linux (void);
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extern const struct target_desc *tdesc_i386_mmx_linux;
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/* Defined in auto-generated file i386-avx-linux.c. */
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void init_registers_i386_avx_linux (void);
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extern const struct target_desc *tdesc_i386_avx_linux;
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/* Defined in auto-generated file i386-avx-mpx-linux.c. */
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void init_registers_i386_avx_mpx_linux (void);
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extern const struct target_desc *tdesc_i386_avx_mpx_linux;
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/* Defined in auto-generated file i386-avx-avx512-linux.c. */
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void init_registers_i386_avx_avx512_linux (void);
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extern const struct target_desc *tdesc_i386_avx_avx512_linux;
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/* Defined in auto-generated file i386-avx-mpx-avx512-linux.c. */
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void init_registers_i386_avx_mpx_avx512_pku_linux (void);
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extern const struct target_desc *tdesc_i386_avx_mpx_avx512_pku_linux;
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/* Defined in auto-generated file i386-mpx-linux.c. */
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void init_registers_i386_mpx_linux (void);
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extern const struct target_desc *tdesc_i386_mpx_linux;
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#endif
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static struct target_desc *i386_tdescs[X86_TDESC_LAST] = { };
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void
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initialize_low_tdesc ()
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{
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#if defined __i386__ || !defined IN_PROCESS_AGENT
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init_registers_i386_linux ();
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init_registers_i386_mmx_linux ();
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init_registers_i386_avx_linux ();
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init_registers_i386_mpx_linux ();
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init_registers_i386_avx_mpx_linux ();
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init_registers_i386_avx_avx512_linux ();
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init_registers_i386_avx_mpx_avx512_pku_linux ();
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#endif
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}
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#if defined __i386__ || !defined IN_PROCESS_AGENT
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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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struct target_desc **tdesc = NULL;
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if (xcr0 & X86_XSTATE_PKRU)
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tdesc = &i386_tdescs[X86_TDESC_AVX_MPX_AVX512_PKU];
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else if (xcr0 & X86_XSTATE_AVX512)
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tdesc = &i386_tdescs[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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tdesc = &i386_tdescs[X86_TDESC_AVX_MPX];
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else if (xcr0 & X86_XSTATE_MPX)
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tdesc = &i386_tdescs[X86_TDESC_MPX];
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else if (xcr0 & X86_XSTATE_AVX)
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tdesc = &i386_tdescs[X86_TDESC_AVX];
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else if (xcr0 & X86_XSTATE_SSE)
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tdesc = &i386_tdescs[X86_TDESC_SSE];
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else if (xcr0 & X86_XSTATE_X87)
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tdesc = &i386_tdescs[X86_TDESC_MMX];
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if (tdesc == NULL)
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return NULL;
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if (*tdesc == NULL)
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{
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*tdesc = new target_desc ();
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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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regnum = create_feature_i386_32bit_linux (*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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init_target_desc (*tdesc);
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#ifndef IN_PROCESS_AGENT
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static const char *expedite_regs_i386[] = { "ebp", "esp", "eip", NULL };
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(*tdesc)->expedite_regs = expedite_regs_i386;
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if (xcr0 & X86_XSTATE_PKRU)
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(*tdesc)->xmltarget = "i386-avx-mpx-avx512-pku-linux.xml";
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else if (xcr0 & X86_XSTATE_AVX512)
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(*tdesc)->xmltarget = "i386-avx-avx512-linux.xml";
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else if ((xcr0 & X86_XSTATE_AVX_MPX_MASK) == X86_XSTATE_AVX_MPX_MASK)
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(*tdesc)->xmltarget = "i386-avx-mpx-linux.xml";
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else if (xcr0 & X86_XSTATE_MPX)
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(*tdesc)->xmltarget = "i386-mpx-linux.xml";
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else if (xcr0 & X86_XSTATE_AVX)
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(*tdesc)->xmltarget = "i386-avx-linux.xml";
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else if (xcr0 & X86_XSTATE_SSE)
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(*tdesc)->xmltarget = "i386-linux.xml";
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else if (xcr0 & X86_XSTATE_X87)
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(*tdesc)->xmltarget = "i386-mmx-linux.xml";
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else
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internal_error (__FILE__, __LINE__,
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"unknown xcr0: %" PRIu64, xcr0);
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#endif
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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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#endif
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