ae91f62539
If gdbserver and IPA are using different tdesc, they will disagree about 'R' trace packet size. This results in mangled traces. To make sure they pick the same tdesc, gdbserver pokes the tdesc (specified as an index in a target-specific list) into a global variable in IPA. In theory, IPA could find out the tdesc on its own, but that may be complex (in particular, I don't know how to tell whether we have LAST_BREAK on s390 without messing with ptrace), and we'd have to duplicate the logic. Tested on i386 and x86_64. On i386, it fixes two FAILs in ftrace.exp. On x86_64, these failures have been KFAILed - one of them works now, but the other now fails due to an unrelated reason (ugh). gdb/gdbserver/ChangeLog: PR gdb/13808 * Makefile.in: Add i386-*-linux-ipa.o and amd64-*-linux-ipa.o. * configure.srv: Ditto. * linux-aarch64-ipa.c (get_ipa_tdesc): New function. (initialize_low_tracepoint): Remove ipa_tdesc assignment. * linux-amd64-ipa.c: Add "linux-x86-tdesc.h" include. (init_registers_amd64_linux): Remove prototype. (tdesc_amd64_linux): Remove declaration. (get_ipa_tdesc): New function. (initialize_low_tracepoint): Remove ipa_tdesc assignment, initialize remaining tdescs. * linux-i386-ipa.c: Add "linux-x86-tdesc.h" include. (init_registers_i386_linux): Remove prototype. (tdesc_i386_linux): Remove declaration. (get_ipa_tdesc): New function. (initialize_low_tracepoint): Remove ipa_tdesc assignment, initialize remaining tdescs. * linux-low.c (linux_get_ipa_tdesc_idx): New function. (linux_target_ops): wire in linux_get_ipa_tdesc_idx. * linux-low.h (struct linux_target_ops): Add get_ipa_tdesc_idx. * linux-x86-low.c: Move tdesc declarations to linux-x86-tdesc.h. (x86_get_ipa_tdesc_idx): New function. (the_low_target): Wire in x86_get_ipa_tdesc_idx. * linux-x86-tdesc.h: New file. * target.h (struct target_ops): Add get_ipa_tdesc_idx. (target_get_ipa_tdesc_idx): New macro. * tracepoint.c (ipa_tdesc_idx): New macro. (struct ipa_sym_addresses): Add addr_ipa_tdesc_idx. (symbol_list): Add ipa_tdesc_idx. (cmd_qtstart): Write ipa_tdesc_idx in the target. (ipa_tdesc): Remove. (ipa_tdesc_idx): New variable. (get_context_regcache): Use get_ipa_tdesc. (gdb_collect): Ditto. (gdb_probe): Ditto. * tracepoint.h (get_ipa_tdesc): New prototype. (ipa_tdesc): Remove. gdb/testsuite/ChangeLog: PR gdb/13808 * gdb.trace/ftrace.exp (test_fast_tracepoints): Remove kfail.
89 lines
3.2 KiB
C
89 lines
3.2 KiB
C
/* Low level support for x86 (i386 and x86-64), shared between gdbserver
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and IPA.
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Copyright (C) 2016 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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/* Note: since IPA obviously knows what ABI it's running on (i386 vs x86_64
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vs x32), it's sufficient to pass only the register set here. This,
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together with the ABI known at IPA compile time, maps to a tdesc. */
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enum x86_linux_tdesc {
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X86_TDESC_MMX = 0,
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X86_TDESC_SSE = 1,
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X86_TDESC_AVX = 2,
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X86_TDESC_MPX = 3,
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X86_TDESC_AVX512 = 4,
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};
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#ifdef __x86_64__
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#if defined __LP64__ || !defined IN_PROCESS_AGENT
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/* Defined in auto-generated file amd64-linux.c. */
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void init_registers_amd64_linux (void);
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extern const struct target_desc *tdesc_amd64_linux;
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/* Defined in auto-generated file amd64-avx-linux.c. */
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void init_registers_amd64_avx_linux (void);
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extern const struct target_desc *tdesc_amd64_avx_linux;
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/* Defined in auto-generated file amd64-avx512-linux.c. */
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void init_registers_amd64_avx512_linux (void);
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extern const struct target_desc *tdesc_amd64_avx512_linux;
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/* Defined in auto-generated file amd64-mpx-linux.c. */
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void init_registers_amd64_mpx_linux (void);
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extern const struct target_desc *tdesc_amd64_mpx_linux;
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#endif
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#if defined __ILP32__ || !defined IN_PROCESS_AGENT
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/* Defined in auto-generated file x32-linux.c. */
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void init_registers_x32_linux (void);
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extern const struct target_desc *tdesc_x32_linux;
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/* Defined in auto-generated file x32-avx-linux.c. */
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void init_registers_x32_avx_linux (void);
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extern const struct target_desc *tdesc_x32_avx_linux;
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/* Defined in auto-generated file x32-avx512-linux.c. */
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void init_registers_x32_avx512_linux (void);
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extern const struct target_desc *tdesc_x32_avx512_linux;
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#endif
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#endif
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#if defined __i386__ || !defined IN_PROCESS_AGENT
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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-avx512-linux.c. */
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void init_registers_i386_avx512_linux (void);
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extern const struct target_desc *tdesc_i386_avx512_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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