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3b7344d5ab
This patch changes a few minimal symbol lookup functions to return a bound_minimal_symbol rather than a pointer to the minsym. This change helps prepare gdb for computing a minimal symbol's address at the point of use. Note that this changes even those functions that ostensibly search a single objfile. That was necessary because, in fact, those functions can search an objfile and its separate debug objfiles; and it is important for the caller to know in which objfile the minimal symbol was actually found. The bulk of this patch is mechanical. 2014-02-26 Tom Tromey <tromey@redhat.com> * ada-lang.c (ada_update_initial_language): Update. (ada_main_name, ada_has_this_exception_support): Update. * ada-tasks.c (ada_tasks_inferior_data_sniffer): Update. * aix-thread.c (pdc_symbol_addrs, pd_enable): Update. * arm-tdep.c (arm_skip_stub): Update. * auxv.c (ld_so_xfer_auxv): Update. * avr-tdep.c (avr_scan_prologue): Update. * ax-gdb.c (gen_var_ref): Update. * breakpoint.c (struct breakpoint_objfile_data) <overlay_msym, longjmp_msym, terminate_msym, exception_msym>: Change type to bound_minimal_symbol. (create_overlay_event_breakpoint) (create_longjmp_master_breakpoint) (create_std_terminate_master_breakpoint) (create_exception_master_breakpoint): Update. * bsd-uthread.c (bsd_uthread_lookup_address): Update. * c-exp.y (classify_name): Update. * coffread.c (coff_symfile_read): Update. * common/agent.c (agent_look_up_symbols): Update. * d-lang.c (d_main_name): Update. * dbxread.c (find_stab_function_addr, end_psymtab): Update. * dec-thread.c (enable_dec_thread): Update. * dwarf2loc.c (call_site_to_target_addr): Update. * elfread.c (elf_gnu_ifunc_resolve_by_got): Update. * eval.c (evaluate_subexp_standard): Update. * findvar.c (struct minsym_lookup_data) <result>: Change type to bound_minimal_symbol. <objfile>: Remove. (minsym_lookup_iterator_cb, default_read_var_value): Update. * frame.c (inside_main_func): Update. * frv-tdep.c (frv_frame_this_id): Update. * gcore.c (call_target_sbrk): Update. * glibc-tdep.c (glibc_skip_solib_resolver): Update. * gnu-v3-abi.c (gnuv3_get_typeid, gnuv3_skip_trampoline): Update. * go-lang.c (go_main_name): Update. * hppa-hpux-tdep.c (hppa_hpux_skip_trampoline_code) (hppa_hpux_find_import_stub_for_addr): Update. * hppa-tdep.c (hppa_extract_17, hppa_lookup_stub_minimal_symbol): Update. Change return type. * hppa-tdep.h (hppa_lookup_stub_minimal_symbol): Change return type. * jit.c (jit_breakpoint_re_set_internal): Update. * linux-fork.c (inferior_call_waitpid, checkpoint_command): Update. * linux-nat.c (get_signo): Update. * linux-thread-db.c (inferior_has_bug): Update * m32c-tdep.c (m32c_return_value) (m32c_m16c_address_to_pointer): Update. * m32r-tdep.c (m32r_frame_this_id): Update. * m68hc11-tdep.c (m68hc11_get_register_info): Update. * machoread.c (macho_resolve_oso_sym_with_minsym): Update. * minsyms.c (lookup_minimal_symbol_internal): Rename to lookup_minimal_symbol. Change return type. (lookup_minimal_symbol): Remove. (lookup_bound_minimal_symbol): Update. (lookup_minimal_symbol_text): Change return type. (lookup_minimal_symbol_solib_trampoline): Change return type. * minsyms.h (lookup_minimal_symbol, lookup_minimal_symbol_text) (lookup_minimal_symbol_solib_trampoline): Change return type. * mips-linux-tdep.c (mips_linux_skip_resolver): Update. * objc-lang.c (lookup_objc_class, lookup_child_selector) (value_nsstring, find_imps): Update. * obsd-tdep.c (obsd_skip_solib_resolver): Update. * p-lang.c (pascal_main_name): Update. * ppc-linux-tdep.c (ppc_linux_spe_context_lookup): Update. * ppc-sysv-tdep.c (convert_code_addr_to_desc_addr): Update. * proc-service.c (ps_pglobal_lookup): Update. * ravenscar-thread.c (get_running_thread_msymbol): Change return type. (has_ravenscar_runtime, get_running_thread_id): Update. * remote.c (remote_check_symbols): Update. * sol-thread.c (ps_pglobal_lookup): Update. * sol2-tdep.c (sol2_skip_solib_resolver): Update. * solib-dsbt.c (lm_base): Update. * solib-frv.c (lm_base, frv_relocate_section_addresses): Update. * solib-irix.c (locate_base): Update. * solib-som.c (som_solib_create_inferior_hook) (som_solib_desire_dynamic_linker_symbols, link_map_start): Update. * solib-spu.c (spu_enable_break): Update. * solib-svr4.c (elf_locate_base, enable_break): Update. * spu-tdep.c (spu_get_overlay_table, spu_catch_start) (flush_ea_cache): Update. * stabsread.c (define_symbol): Update. * symfile.c (simple_read_overlay_table): Update. * symtab.c (find_pc_sect_line): Update. * tracepoint.c (scope_info): Update. * tui-disasm.c (tui_get_begin_asm_address): Update. * value.c (value_static_field): Update.
254 lines
9.3 KiB
C
254 lines
9.3 KiB
C
/* Target-dependent code for the HP PA-RISC architecture.
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Copyright (C) 2003-2014 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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#ifndef HPPA_TDEP_H
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#define HPPA_TDEP_H
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struct trad_frame_saved_reg;
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struct objfile;
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struct so_list;
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/* Register numbers of various important registers. */
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enum hppa_regnum
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{
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HPPA_R0_REGNUM = 0, /* Doesn't actually exist, used as base for
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other r registers. */
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HPPA_R1_REGNUM = 1,
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HPPA_FLAGS_REGNUM = 0, /* Various status flags */
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HPPA_RP_REGNUM = 2, /* return pointer */
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HPPA_FP_REGNUM = 3, /* The ABI's frame pointer, when used */
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HPPA_DP_REGNUM = 27,
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HPPA_RET0_REGNUM = 28,
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HPPA_RET1_REGNUM = 29,
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HPPA_SP_REGNUM = 30, /* Stack pointer. */
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HPPA_R31_REGNUM = 31,
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HPPA_SAR_REGNUM = 32, /* Shift Amount Register */
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HPPA_IPSW_REGNUM = 41, /* Interrupt Processor Status Word */
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HPPA_PCOQ_HEAD_REGNUM = 33, /* instruction offset queue head */
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HPPA_PCSQ_HEAD_REGNUM = 34, /* instruction space queue head */
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HPPA_PCOQ_TAIL_REGNUM = 35, /* instruction offset queue tail */
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HPPA_PCSQ_TAIL_REGNUM = 36, /* instruction space queue tail */
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HPPA_EIEM_REGNUM = 37, /* External Interrupt Enable Mask */
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HPPA_IIR_REGNUM = 38, /* Interrupt Instruction Register */
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HPPA_ISR_REGNUM = 39, /* Interrupt Space Register */
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HPPA_IOR_REGNUM = 40, /* Interrupt Offset Register */
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HPPA_SR4_REGNUM = 43, /* space register 4 */
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HPPA_SR0_REGNUM = 44, /* space register 0 */
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HPPA_SR1_REGNUM = 45, /* space register 1 */
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HPPA_SR2_REGNUM = 46, /* space register 2 */
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HPPA_SR3_REGNUM = 47, /* space register 3 */
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HPPA_SR5_REGNUM = 48, /* space register 5 */
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HPPA_SR6_REGNUM = 49, /* space register 6 */
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HPPA_SR7_REGNUM = 50, /* space register 7 */
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HPPA_RCR_REGNUM = 51, /* Recover Counter (also known as cr0) */
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HPPA_PID0_REGNUM = 52, /* Protection ID */
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HPPA_PID1_REGNUM = 53, /* Protection ID */
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HPPA_PID2_REGNUM = 55, /* Protection ID */
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HPPA_PID3_REGNUM = 56, /* Protection ID */
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HPPA_CCR_REGNUM = 54, /* Coprocessor Configuration Register */
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HPPA_TR0_REGNUM = 57, /* Temporary Registers (cr24 -> cr31) */
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HPPA_CR26_REGNUM = 59,
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HPPA_CR27_REGNUM = 60, /* Base register for thread-local
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storage, cr27 */
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HPPA_FP0_REGNUM = 64, /* First floating-point. */
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HPPA_FP4_REGNUM = 72,
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HPPA64_FP4_REGNUM = 68,
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HPPA_FP31R_REGNUM = 127, /* Last floating-point. */
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HPPA_ARG0_REGNUM = 26, /* The first argument of a callee. */
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HPPA_ARG1_REGNUM = 25, /* The second argument of a callee. */
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HPPA_ARG2_REGNUM = 24, /* The third argument of a callee. */
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HPPA_ARG3_REGNUM = 23 /* The fourth argument of a callee. */
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};
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/* Instruction size. */
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#define HPPA_INSN_SIZE 4
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/* Target-dependent structure in gdbarch. */
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struct gdbarch_tdep
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{
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/* The number of bytes in an address. For now, this field is designed
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to allow us to differentiate hppa32 from hppa64 targets. */
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int bytes_per_address;
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/* Is this an ELF target? This can be 64-bit HP-UX, or a 32/64-bit GNU/Linux
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system. */
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int is_elf;
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/* Given a function address, try to find the global pointer for the
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corresponding shared object. */
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CORE_ADDR (*find_global_pointer) (struct gdbarch *, struct value *);
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/* For shared libraries, each call goes through a small piece of
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trampoline code in the ".plt" section. IN_SOLIB_CALL_TRAMPOLINE
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evaluates to nonzero if we are currently stopped in one of these. */
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int (*in_solib_call_trampoline) (struct gdbarch *gdbarch, CORE_ADDR pc);
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/* For targets that support multiple spaces, we may have additional stubs
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in the return path. These stubs are internal to the ABI, and users are
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not interested in them. If we detect that we are returning to a stub,
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adjust the pc to the real caller. This improves the behavior of commands
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that traverse frames such as "up" and "finish". */
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void (*unwind_adjust_stub) (struct frame_info *this_frame, CORE_ADDR base,
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struct trad_frame_saved_reg *saved_regs);
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/* These are solib-dependent methods. They are really HPUX only, but
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we don't have a HPUX-specific tdep vector at the moment. */
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CORE_ADDR (*solib_thread_start_addr) (struct so_list *so);
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CORE_ADDR (*solib_get_got_by_pc) (CORE_ADDR addr);
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CORE_ADDR (*solib_get_solib_by_pc) (CORE_ADDR addr);
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CORE_ADDR (*solib_get_text_base) (struct objfile *objfile);
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};
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/*
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* Unwind table and descriptor.
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*/
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struct unwind_table_entry
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{
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CORE_ADDR region_start;
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CORE_ADDR region_end;
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unsigned int Cannot_unwind:1; /* 0 */
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unsigned int Millicode:1; /* 1 */
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unsigned int Millicode_save_sr0:1; /* 2 */
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unsigned int Region_description:2; /* 3..4 */
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unsigned int reserved:1; /* 5 */
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unsigned int Entry_SR:1; /* 6 */
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unsigned int Entry_FR:4; /* number saved *//* 7..10 */
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unsigned int Entry_GR:5; /* number saved *//* 11..15 */
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unsigned int Args_stored:1; /* 16 */
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unsigned int Variable_Frame:1; /* 17 */
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unsigned int Separate_Package_Body:1; /* 18 */
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unsigned int Frame_Extension_Millicode:1; /* 19 */
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unsigned int Stack_Overflow_Check:1; /* 20 */
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unsigned int Two_Instruction_SP_Increment:1; /* 21 */
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unsigned int sr4export:1; /* 22 */
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unsigned int cxx_info:1; /* 23 */
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unsigned int cxx_try_catch:1; /* 24 */
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unsigned int sched_entry_seq:1; /* 25 */
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unsigned int reserved1:1; /* 26 */
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unsigned int Save_SP:1; /* 27 */
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unsigned int Save_RP:1; /* 28 */
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unsigned int Save_MRP_in_frame:1; /* 29 */
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unsigned int save_r19:1; /* 30 */
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unsigned int Cleanup_defined:1; /* 31 */
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unsigned int MPE_XL_interrupt_marker:1; /* 0 */
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unsigned int HP_UX_interrupt_marker:1; /* 1 */
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unsigned int Large_frame:1; /* 2 */
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unsigned int alloca_frame:1; /* 3 */
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unsigned int reserved2:1; /* 4 */
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unsigned int Total_frame_size:27; /* 5..31 */
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/* This is *NOT* part of an actual unwind_descriptor in an object
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file. It is *ONLY* part of the "internalized" descriptors that
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we create from those in a file. */
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struct
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{
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unsigned int stub_type:4; /* 0..3 */
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unsigned int padding:28; /* 4..31 */
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}
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stub_unwind;
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};
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/* HP linkers also generate unwinds for various linker-generated stubs.
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GDB reads in the stubs from the $UNWIND_END$ subspace, then
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"converts" them into normal unwind entries using some of the reserved
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fields to store the stub type. */
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/* The gaps represent linker stubs used in MPE and space for future
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expansion. */
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enum unwind_stub_types
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{
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LONG_BRANCH = 1,
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PARAMETER_RELOCATION = 2,
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EXPORT = 10,
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IMPORT = 11,
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IMPORT_SHLIB = 12,
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};
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struct unwind_table_entry *find_unwind_entry (CORE_ADDR);
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/* We use the objfile->obj_private pointer for two things:
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* 1. An unwind table;
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*
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* 2. A pointer to any associated shared library object.
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*
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* #defines are used to help refer to these objects.
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*/
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/* Info about the unwind table associated with an object file.
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* This is hung off of the "objfile->obj_private" pointer, and
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* is allocated in the objfile's psymbol obstack. This allows
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* us to have unique unwind info for each executable and shared
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* library that we are debugging.
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*/
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struct hppa_unwind_info
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{
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struct unwind_table_entry *table; /* Pointer to unwind info */
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struct unwind_table_entry *cache; /* Pointer to last entry we found */
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int last; /* Index of last entry */
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};
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struct hppa_objfile_private
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{
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struct hppa_unwind_info *unwind_info; /* a pointer */
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struct so_list *so_info; /* a pointer */
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CORE_ADDR dp;
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int dummy_call_sequence_reg;
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CORE_ADDR dummy_call_sequence_addr;
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};
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extern const struct objfile_data *hppa_objfile_priv_data;
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int hppa_get_field (unsigned word, int from, int to);
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int hppa_extract_5_load (unsigned int);
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unsigned hppa_extract_5R_store (unsigned int);
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unsigned hppa_extract_5r_store (unsigned int);
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int hppa_extract_17 (unsigned int);
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int hppa_extract_21 (unsigned);
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int hppa_extract_14 (unsigned);
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CORE_ADDR hppa_symbol_address(const char *sym);
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extern struct value *
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hppa_frame_prev_register_helper (struct frame_info *this_frame,
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struct trad_frame_saved_reg *saved_regs,
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int regnum);
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extern CORE_ADDR hppa_read_pc (struct regcache *regcache);
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extern void hppa_write_pc (struct regcache *regcache, CORE_ADDR pc);
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extern CORE_ADDR hppa_unwind_pc (struct gdbarch *gdbarch,
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struct frame_info *next_frame);
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extern struct bound_minimal_symbol
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hppa_lookup_stub_minimal_symbol (const char *name,
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enum unwind_stub_types stub_type);
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extern struct hppa_objfile_private *hppa_init_objfile_priv_data (struct objfile *objfile);
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extern int hppa_in_solib_call_trampoline (struct gdbarch *gdbarch,
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CORE_ADDR pc);
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extern CORE_ADDR hppa_skip_trampoline_code (struct frame_info *, CORE_ADDR pc);
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#endif /* hppa-tdep.h */
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