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2014-05-21AARCH64: Replace regset_alloc() invocations by static regset structures.Andreas Arnez1-14/+15
After removal of the regset_alloc invocations, the tdep fields 'gregset' and 'fpregset' become obsolete and are thus removed.
2014-05-20Fix issue #15778: GDB Aarch64 signal frame unwinder issueHui Zhu1-29/+34
The root cause of this issue is unwinder of "#3 <signal handler called>" doesn't supply right values of registers. When GDB want to get the previous frame of "#3 <signal handler called>", it will call cache init function of unwinder "aarch64_linux_sigframe_init". The address or the value of the registers is get from this function. So the bug is inside thie function. I check the asm code of "#3 <signal handler called>": (gdb) frame 3 (gdb) p $pc $1 = (void (*)()) 0x7f931fa4d0 (gdb) disassemble $pc, +10 Dump of assembler code from 0x7f931fa4d0 to 0x7f931fa4da: => 0x0000007f931fa4d0: mov x8, #0x8b // #139 0x0000007f931fa4d4: svc #0x0 0x0000007f931fa4d8: nop This is the syscall sys_rt_sigreturn, Linux kernel function "restore_sigframe" will set the frame: for (i = 0; i < 31; i++) __get_user_error(regs->regs[i], &sf->uc.uc_mcontext.regs[i], err); __get_user_error(regs->sp, &sf->uc.uc_mcontext.sp, err); __get_user_error(regs->pc, &sf->uc.uc_mcontext.pc, err); The struct of uc_mcontext is: struct sigcontext { __u64 fault_address; /* AArch64 registers */ __u64 regs[31]; __u64 sp; __u64 pc; __u64 pstate; /* 4K reserved for FP/SIMD state and future expansion */ __u8 __reserved[4096] __attribute__((__aligned__(16))); }; But in GDB function "aarch64_linux_sigframe_init", the code the get address of registers is: for (i = 0; i < 31; i++) { trad_frame_set_reg_addr (this_cache, AARCH64_X0_REGNUM + i, sigcontext_addr + AARCH64_SIGCONTEXT_XO_OFFSET + i * AARCH64_SIGCONTEXT_REG_SIZE); } trad_frame_set_reg_addr (this_cache, AARCH64_FP_REGNUM, fp); trad_frame_set_reg_addr (this_cache, AARCH64_LR_REGNUM, fp + 8); trad_frame_set_reg_addr (this_cache, AARCH64_PC_REGNUM, fp + 8); The code that get pc and sp is not right, so I change the code according to Linux kernel code: trad_frame_set_reg_addr (this_cache, AARCH64_SP_REGNUM, sigcontext_addr + AARCH64_SIGCONTEXT_XO_OFFSET + 31 * AARCH64_SIGCONTEXT_REG_SIZE); trad_frame_set_reg_addr (this_cache, AARCH64_PC_REGNUM, sigcontext_addr + AARCH64_SIGCONTEXT_XO_OFFSET + 32 * AARCH64_SIGCONTEXT_REG_SIZE); The issue was fixed by this change, and I did the regression test. It also fixed a lot of other XFAIL and FAIL. 2014-05-20 Hui Zhu <hui@codesourcery.com> Yao Qi <yao@codesourcery.com> PR backtrace/16558 * aarch64-linux-tdep.c (aarch64_linux_sigframe_init): Update comments and change address of sp and pc.
2014-03-27Remove `expout*' globals from parser-defs.hSergio Durigan Junior1-13/+13
This commit removes the "expout*" globals from our parser code, turning them into a structure that is passed when an expression needs to be evaluated. This is the initial step to make our parser less "globalized". This is mostly a mechanical patch, which creates a structure containing the "expout*" globals and then modify all the functions that handle them in order to take the structure as argument. It is big, and has been reviewed at least 4 times, so I think everything is covered. Below you can see the message links from the discussions: - First attempt: <https://sourceware.org/ml/gdb-patches/2012-01/msg00522.html> Message-ID: <m3k44s7qej.fsf@gmail.com> - Second attempt: <https://sourceware.org/ml/gdb-patches/2012-06/msg00054.html> Message-Id: <1338665528-5932-1-git-send-email-sergiodj@redhat.com> - Third attempt: <https://sourceware.org/ml/gdb-patches/2014-01/msg00949.html> Message-Id: <1390629467-27139-1-git-send-email-sergiodj@redhat.com> - Fourth (last) attempt: <https://sourceware.org/ml/gdb-patches/2014-03/msg00546.html> Message-Id: <1395463432-29750-1-git-send-email-sergiodj@redhat.com> gdb/ 2014-03-27 Sergio Durigan Junior <sergiodj@redhat.com> Remove some globals from our parser. * language.c (unk_lang_parser): Add "struct parser_state" argument. * language.h (struct language_defn) <la_parser>: Likewise. * parse.c (expout, expout_size, expout_ptr): Remove variables. (initialize_expout): Add "struct parser_state" argument. Rewrite function to use the parser state. (reallocate_expout, write_exp_elt, write_exp_elt_opcode, write_exp_elt_sym, write_exp_elt_block, write_exp_elt_objfile, write_exp_elt_longcst, write_exp_elt_dblcst, write_exp_elt_decfloatcst, write_exp_elt_type, write_exp_elt_intern, write_exp_string, write_exp_string_vector, write_exp_bitstring, write_exp_msymbol, mark_struct_expression, write_dollar_variable): Likewise. (parse_exp_in_context_1): Use parser state. (insert_type_address_space): Add "struct parser_state" argument. Use parser state. (increase_expout_size): New function. * parser-defs.h: Forward declare "struct language_defn" and "struct parser_state". (expout, expout_size, expout_ptr): Remove extern declarations. (parse_gdbarch, parse_language): Rewrite macro declarations to accept the parser state. (struct parser_state): New struct. (initialize_expout, reallocate_expout, write_exp_elt_opcode, write_exp_elt_sym, write_exp_elt_longcst, write_exp_elt_dblcst, write_exp_elt_decfloatcst, write_exp_elt_type, write_exp_elt_intern, write_exp_string, write_exp_string_vector, write_exp_bitstring, write_exp_elt_block, write_exp_elt_objfile, write_exp_msymbol, write_dollar_variable, mark_struct_expression, insert_type_address_space): Add "struct parser_state" argument. (increase_expout_size): New function. * utils.c (do_clear_parser_state): New function. (make_cleanup_clear_parser_state): Likewise. * utils.h (make_cleanup_clear_parser_state): New function prototype. * aarch64-linux-tdep.c (aarch64_stap_parse_special_token): Update calls to write_exp* in order to pass the parser state. * arm-linux-tdep.c (arm_stap_parse_special_token): Likewise. * i386-tdep.c (i386_stap_parse_special_token_triplet): Likewise. (i386_stap_parse_special_token_three_arg_disp): Likewise. * ppc-linux-tdep.c (ppc_stap_parse_special_token): Likewise. * stap-probe.c (stap_parse_register_operand): Likewise. (stap_parse_single_operand): Likewise. (stap_parse_argument_1): Likewise. (stap_parse_argument): Use parser state. * stap-probe.h: Include "parser-defs.h". (struct stap_parse_info) <pstate>: New field. * c-exp.y (parse_type): Rewrite to use parser state. (yyparse): Redefine to c_parse_internal. (pstate): New global variable. (parse_number): Add "struct parser_state" argument. (write_destructor_name): Likewise. (type_exp): Update calls to write_exp* and similars in order to use parser state. (exp1, exp, variable, qualified_name, space_identifier, typename, typebase): Likewise. (write_destructor_name, parse_number, lex_one_token, classify_name, classify_inner_name, c_parse): Add "struct parser_state" argument. Update function to use parser state. * c-lang.h: Forward declare "struct parser_state". (c_parse): Add "struct parser_state" argument. * ada-exp.y (parse_type): Rewrite macro to use parser state. (yyparse): Redefine macro to ada_parse_internal. (pstate): New variable. (write_int, write_object_renaming, write_var_or_type, write_name_assoc, write_exp_op_with_string, write_ambiguous_var, type_int, type_long, type_long_long, type_float, type_double, type_long_double, type_char, type_boolean, type_system_address): Add "struct parser_state" argument. (exp1, primary, simple_exp, relation, and_exp, and_then_exp, or_exp, or_else_exp, xor_exp, type_prefix, opt_type_prefix, var_or_type, aggregate, aggregate_component_list, positional_list, others, component_group, component_associations): Update calls to write_exp* and similar functions in order to use parser state. (ada_parse, write_var_from_sym, write_int, write_exp_op_with_string, write_object_renaming, find_primitive_type, write_selectors, write_ambiguous_var, write_var_or_type, write_name_assoc, type_int, type_long, type_long_long, type_float, type_double, type_long_double, type_char, type_boolean, type_system_address): Add "struct parser_state" argument. Adjust function to use parser state. * ada-lang.c (parse): Likewise. * ada-lang.h: Forward declare "struct parser_state". (ada_parse): Add "struct parser_state" argument. * ada-lex.l (processInt, processReal): Likewise. Adjust all calls to both functions. * f-exp.y (parse_type, parse_f_type): Rewrite macros to use parser state. (yyparse): Redefine macro to f_parse_internal. (pstate): New variable. (parse_number): Add "struct parser_state" argument. (type_exp, exp, subrange, typebase): Update calls to write_exp* and similars in order to use parser state. (parse_number): Adjust code to use parser state. (yylex): Likewise. (f_parse): New function. * f-lang.h: Forward declare "struct parser_state". (f_parse): Add "struct parser_state" argument. * jv-exp.y (parse_type, parse_java_type): Rewrite macros to use parser state. (yyparse): Redefine macro for java_parse_internal. (pstate): New variable. (push_expression_name, push_expression_name, insert_exp): Add "struct parser_state" argument. (type_exp, StringLiteral, Literal, PrimitiveType, IntegralType, FloatingPointType, exp1, PrimaryNoNewArray, FieldAccess, FuncStart, MethodInvocation, ArrayAccess, PostfixExpression, PostIncrementExpression, PostDecrementExpression, UnaryExpression, PreIncrementExpression, PreDecrementExpression, UnaryExpressionNotPlusMinus, CastExpression, MultiplicativeExpression, AdditiveExpression, ShiftExpression, RelationalExpression, EqualityExpression, AndExpression, ExclusiveOrExpression, InclusiveOrExpression, ConditionalAndExpression, ConditionalOrExpression, ConditionalExpression, Assignment, LeftHandSide): Update calls to write_exp* and similars in order to use parser state. (parse_number): Ajust code to use parser state. (yylex): Likewise. (java_parse): New function. (push_variable): Add "struct parser_state" argument. Adjust code to user parser state. (push_fieldnames, push_qualified_expression_name, push_expression_name, insert_exp): Likewise. * jv-lang.h: Forward declare "struct parser_state". (java_parse): Add "struct parser_state" argument. * m2-exp.y (parse_type, parse_m2_type): Rewrite macros to use parser state. (yyparse): Redefine macro to m2_parse_internal. (pstate): New variable. (type_exp, exp, fblock, variable, type): Update calls to write_exp* and similars to use parser state. (yylex): Likewise. (m2_parse): New function. * m2-lang.h: Forward declare "struct parser_state". (m2_parse): Add "struct parser_state" argument. * objc-lang.c (end_msglist): Add "struct parser_state" argument. * objc-lang.h: Forward declare "struct parser_state". (end_msglist): Add "struct parser_state" argument. * p-exp.y (parse_type): Rewrite macro to use parser state. (yyparse): Redefine macro to pascal_parse_internal. (pstate): New variable. (parse_number): Add "struct parser_state" argument. (type_exp, exp1, exp, qualified_name, variable): Update calls to write_exp* and similars in order to use parser state. (parse_number, yylex): Adjust code to use parser state. (pascal_parse): New function. * p-lang.h: Forward declare "struct parser_state". (pascal_parse): Add "struct parser_state" argument. * go-exp.y (parse_type): Rewrite macro to use parser state. (yyparse): Redefine macro to go_parse_internal. (pstate): New variable. (parse_number): Add "struct parser_state" argument. (type_exp, exp1, exp, variable, type): Update calls to write_exp* and similars in order to use parser state. (parse_number, lex_one_token, classify_name, yylex): Adjust code to use parser state. (go_parse): Likewise. * go-lang.h: Forward declare "struct parser_state". (go_parse): Add "struct parser_state" argument.
2014-01-01Update Copyright year range in all files maintained by GDB.Joel Brobecker1-1/+1
2013-12-28Implement SystemTap SDT probe support for AArch64Sergio Durigan Junior1-0/+137
This commit implements the needed bits for SystemTap SDT probe support on AArch64 architectures. First, I started by looking at AArch64 assembly specification and filling the necessary options on gdbarch's stap machinery in order to make the generic asm parser (implemented in stap-probe.c) recognize AArch64's asm. After my last patch for the SystemTap SDT API, which extends it in order to accept multiple prefixes and suffixes, this patch became simpler. I also followed Marcus suggestion and did not shared code between 32- and 64-bit ARM. Tom asked me in a previous message how I did my tests. I believe I replied that, but just in case: I ran the tests on gdb.base/stap-probe.exp by hand. I also managed to run the tests on real hardware, and they pass without regressions. 2013-12-28 Sergio Durigan Junior <sergiodj@redhat.com> PR tdep/15653 * NEWS: Mention SystemTap SDT probe support for AArch64 GNU/Linux. * aarch64-linux-tdep.c: Include necessary headers for parsing of SystemTap SDT probes. (aarch64_stap_is_single_operand): New function. (aarch64_stap_parse_special_token): Likewise. (aarch64_linux_init_abi): Declare SystemTap SDT probe argument prefixes and suffixes. Initialize gdbarch with them.
2013-10-10gdb/aarch64-linux-tdep.c: Call linux_init_abi.Will Newton1-0/+2
If we are running on a Linux platform we should call linux_init_abi in order to get all the useful hooks it enables. gdb/ChangeLog: 2013-10-10 Will Newton <will.newton@linaro.org> * aarch64-linux-tdep.c (aarch64_linux_init_abi): Call linux_init_abi.
2013-02-08gdb/Yufeng Zhang1-3/+3
2013-02-08 Yufeng Zhang <yufeng.zhang@arm.com> * aarch64-linux-tdep.c (AARCH64_LINUX_SIZEOF_GREGSET): Change the number of the registers from 36 to 34.
2013-02-07Enable TLS support in aarch64-linux-tdep.cMarcus Shawcroft1-0/+4
2013-02-07 Marcus Shawcroft <marcus.shawcroft@arm.com> * aarch64-linux-tdep.c (aarch64_linux_init_abi): Call set_gdbarch_fetch_tls_load_module_address.
2013-02-04Adding aarch64-linux-tdep support.Marcus Shawcroft1-0/+297
2013-02-04 Jim MacArthur <jim.macarthur@arm.com> Marcus Shawcroft <marcus.shawcroft@arm.com> Nigel Stephens <nigel.stephens@arm.com> Yufeng Zhang <yufeng.zhang@arm.com> * Makefile.in (ALL_64_TARGET_OBS): Add aarch64-linux-tdep.o. (ALLDEPFILES): Add aarch64-linux-tdep.c. * aarch64-linux-tdep.c: New file. * aarch64-linux-tdep.h: New file. * aarch64-tdep.h (gdbarch_tdep): Define gregset and fpregset. * configure.tgt: Add aarch64-none-linux-gnu.
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