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* x86-64-tdep.h (x86_64_num_regs, x86_64_num_gregs): Remove
variable declarations. (x86_64_register_number, x86_64_register_name): Remove prototypes. (x86_64_linux_frame_saved_pc, x86_64_linux+saved_pc_after_call, x86_64_linux_in_sigtramp, x86_64_linux_frame_chain, x86_64_init_frame_pc, x86_64_init_frame_pc, x86_64_function_has_prologue): Remove prototypes. (X86_64_NUM_GREGS): New define. (x86_64_supply_fxsave, x86_64_fill_fxsave): New prototypes. * x86-64-tdep.c: Don't include "dwarf2cfi.h". Include "dummy_frame.h", "frame.h", "frame-base.h", "frame-unwind.h". (RAX_REGNUM, RDX_REGNUM, RDI_REGNUM, EFLAGS_REGNUM, ST0_REGNUM, XMM1_REGNUM): Remove defines. (X86_64_RAX_REGNUM, X86_64_RDX_REGNUM, X86_64_RDI_REGNUM, X86_64_RBP_REGNUM, X86_64_RSP_REGNUM, X86_64_RIP_REGNUM, X86_64_EFLAGS_REGNUM, X86_64_ST0_REGNUM, X86_64_XMM0_REGNUM, X86_64_XMM1_REGNUM): New defines. (struct x86_64_register_info): Renamed from `struct register_info'. Remove `size' member. (x86_64_register_info_table): Remove variable. (x86_64_register_info): New variable. (X86_64_NUM_REGS): New define. (X86_64_NUM_GREGS): Remove define. (x86_64_num_regs, x86_64_num_gregs): Remove variables. (x86_64_dwarf2gdb_regno_map, x86_64_dwarf2gdb_regno_map_length): Remove variables. (x86_54_dwarf2_reg_to_regnum): Remove function. (x86_64_dwarf_regmap, x86_64_dwarf_regmap_len): New variables. (x86_64_dwarf_reg_to_regnum): New function. (x86_64_register_name): Rewrite. (x86_64_register_raw_size): Remove function. (x86_64_register_byte_table): Remove variable. (x86_64_register_byte): Remove function. (x86_64_register_virtual_type): Remove function. (x86_64_register_type): New function. (x86_64_register_convertible, x86_64_register_convert_to_virtual, x86_64_register_convert_to_raw): Remove functions. (x86_64_push_return_address, x86_64_pop_frame): Remove functon. (x86_64_use_struct_convention): Make static. Adjust for renamed defines. (x86_64_frame_init_saved_regs): Remove function. (x86_64_push_arguments): Make static. Change to accept a regcache as argument. (x86_64_store_return_value, x86_64_extract_return_value): Make static. Rewrite based on i386 counterparts. (x86_64_push_dummy_call): New function. (X86_64_NUM_SAVED_REGS): New define. (x86_64_register_number): Remove function. (x86_64_store_struct_return): Remove function. (x86_64_frameless_function_invocation, x86_64_function_has_prologue): Remove functions. (PROLOG_BUFSIZE): Remove define. (struct x86_64_frame_cache): New structure. (x86_64_alloc_frame_cache, x86_64_analyze_prologue, x86_64_frame_cache, x86_64_frame_this_id, x86_64_frame_prev_register, x86_64_frame_p, x86_64_sigtramp_frame_cache, x86_64_sigtramp_frame_this_id, x86_64_sigtramp_frame_prev_register, x86_sigtramp_frame_p): New functions. (x86_64_frame_unwind, x86_64_sigtramp_frame_unwind): New variables. (x86_64_skip_prologue): Rewrite in terms of x86_64_analyze_prologue. (x86_64_frame_base_address): New function. (x86_64_frame_base): New variable. (x86_64_save_dummy_frame_tos, x86_64_unwind_dummy_id): Rewrite. (x86_64_init_abi): Set register_type and push_dummy_call. Don't set deprecated_fp_regnum, deprecated_register_size, deprecated_register_bytes, register_raw_size, register_byte, register_virtual_type, register_convertiable, register_convert_to_virtual, convert_to_raw, deprecated_get_saved_register, deprecated_target_read_fp, deprecated_push_arguments, deprecated_push_return_address, deprecated_pop_frame, deprecated_store_struct_return, deprecated_frame_init_saved_regs, deprecated_frame_chain, frameless_function_invocation, deprecated_frame_saved_pc, deprecated_saved_pc_after_call, frame_num_args, pc_in_sigtramp, dwarf2_build_frame_info, deprecated_init_extra_frame_info, deprecated_init_frame_pc and virtual_frame_pointer. Call frame_unwind_append_predicate to register x86_64_sigtramp_frame_p and x86_64_frame_p. Call frame_base_set_default to register x86_64_frame_base. (I387_FISEG_REGNUM, I387_FOSEG_REGNUM): New defines. (x86_64_supply_fxsave, x86_64_fill_fxsave): New functions. (_initialize_x86_64_tdep): Remove function. * x86-64-linux-tdep.c: Don't include "dwarf2cfi.h". (LINUX_SIGINFO_SIZE, LINUX_UCONTEXT_SIGCONTEXT_OFFSET, LINUX_SIGCONTEXT_PC_OFFSET, LINUX_SIGCONTEXT_FP_OFFSET): Don't define. (X86_64_LINUX_UCONTEXT_SIGCONTEXT_OFFSET): Define. (x86_64_linux_sigcontext_addr): Rewrite. (x86_64_linux_sigtramp_saved_pc, x86_64_linux_saved_pc_after_call, x86_64_linux_frame_saved_pc): Remove functions. (x86_64_linux_pc_in_sigtramp): Renamed from x86_64_linux_in_sigtramp. Try harder to recognize a signal trampoline. (x86_64_linux_frame_chain, x86_64_init_frame_pc): Remove_functions. (x86_64_linux_init_abi): Set pc_in_sigtramp. Initialize TDEP->sigcontext_addr, TDEP->sc_pc_offset and TDEP->sc_sp_offset. * x86-64-linux-nat.c: Sync with i386-linux-tdep.c. (x86_64_regmap): Rename to regmap. (GETREGS_SUPPLIES): Use X86_64_NUM_GREGS instead of x86_64_num_gregs. (supply_gregset, fill_gregset): Likewise. Use regmap instead of x86_64_regmap. (x86_64_fxsave_offset): Remove function. (supply_fpregset): Simply call x86_64_supply_fxsave. (fill_fpregset): Simply call x86_64_fill_fxsave. (fetch_inferior_registers, store_inferior_registers): Avoid asignment in if-statement. (LINUX_SYSCALL_LEN, LINUX_SYSCALL_REGNUM, SYS_Sigreturn, SYS_rt_sigreturn, LINUX_SIGCONTEXT_EFLAGS_OFFSET, LINUX_UCONTEXT_SIGCONTEXT_OFFSET): Remove defines. (fetch_core_registers): Remove function. (linux_elf_core_fns): Remove. (offsetoff): Don't define. (_initialize_x86_64_linux_nat, kernel_u_size): Remove functions. * config/i386/x86-64linux.mt (TDEPFILES): Add i386-linux-tdep.o. * config/i386/x86-64linux.mh (NATDEPFILES): Remove core-aout.o, add core-regset.o. * config/i386/nm-x86-64linux.h: Use NM_X86_64_LINUX_H for protection against multiple includes instead of NM_X86_64_h. Add various comments. Include "config/nm-linux.h". Don't include <signal.h>. (REGISTER_U_ADDR, KERNEL_U_SIZE, U_REGS_OFFSET, KERN_U_ADDR, GET_THREAD_SIGNALS): Remove defines. (x86_64_register_u_addr, kernel_u_size, lin_thread_get_thread_signals): Remove prototypes. (PTRACE_ARG3_TYPE, PTRACE_XFER_TYPE): Define to `long'. [HAVE_LINK_H]: Don't include "solib.h". [HAVE_LINK_H] (SVR4_SHARED_LIBS): Remove define. * config/i386/tm-x86-64linux.h: Fix comments. * Makefile.in (x86-64-linux-nat.o, x86_64-linux-tdep.o, x86-64-tdep.o): Update dependencies.
This commit is contained in:
parent
f2c822e386
commit
c4f35dd8e1
138
gdb/ChangeLog
138
gdb/ChangeLog
@ -1,3 +1,141 @@
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2003-05-31 Mark Kettenis <kettenis@gnu.org>
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* x86-64-tdep.h (x86_64_num_regs, x86_64_num_gregs): Remove
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variable declarations.
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(x86_64_register_number, x86_64_register_name): Remove prototypes.
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(x86_64_linux_frame_saved_pc, x86_64_linux+saved_pc_after_call,
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x86_64_linux_in_sigtramp, x86_64_linux_frame_chain,
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x86_64_init_frame_pc, x86_64_init_frame_pc,
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x86_64_function_has_prologue): Remove prototypes.
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(X86_64_NUM_GREGS): New define.
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(x86_64_supply_fxsave, x86_64_fill_fxsave): New prototypes.
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* x86-64-tdep.c: Don't include "dwarf2cfi.h". Include
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"dummy_frame.h", "frame.h", "frame-base.h", "frame-unwind.h".
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(RAX_REGNUM, RDX_REGNUM, RDI_REGNUM, EFLAGS_REGNUM, ST0_REGNUM,
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XMM1_REGNUM): Remove defines.
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(X86_64_RAX_REGNUM, X86_64_RDX_REGNUM, X86_64_RDI_REGNUM,
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X86_64_RBP_REGNUM, X86_64_RSP_REGNUM, X86_64_RIP_REGNUM,
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X86_64_EFLAGS_REGNUM, X86_64_ST0_REGNUM, X86_64_XMM0_REGNUM,
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X86_64_XMM1_REGNUM): New defines.
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(struct x86_64_register_info): Renamed from `struct
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register_info'. Remove `size' member.
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(x86_64_register_info_table): Remove variable.
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(x86_64_register_info): New variable.
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(X86_64_NUM_REGS): New define.
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(X86_64_NUM_GREGS): Remove define.
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(x86_64_num_regs, x86_64_num_gregs): Remove variables.
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(x86_64_dwarf2gdb_regno_map, x86_64_dwarf2gdb_regno_map_length):
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Remove variables.
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(x86_54_dwarf2_reg_to_regnum): Remove function.
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(x86_64_dwarf_regmap, x86_64_dwarf_regmap_len): New variables.
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(x86_64_dwarf_reg_to_regnum): New function.
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(x86_64_register_name): Rewrite.
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(x86_64_register_raw_size): Remove function.
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(x86_64_register_byte_table): Remove variable.
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(x86_64_register_byte): Remove function.
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(x86_64_register_virtual_type): Remove function.
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(x86_64_register_type): New function.
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(x86_64_register_convertible, x86_64_register_convert_to_virtual,
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x86_64_register_convert_to_raw): Remove functions.
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(x86_64_push_return_address, x86_64_pop_frame): Remove functon.
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(x86_64_use_struct_convention): Make static. Adjust for renamed
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defines.
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(x86_64_frame_init_saved_regs): Remove function.
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(x86_64_push_arguments): Make static. Change to accept a regcache
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as argument.
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(x86_64_store_return_value, x86_64_extract_return_value): Make
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static. Rewrite based on i386 counterparts.
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(x86_64_push_dummy_call): New function.
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(X86_64_NUM_SAVED_REGS): New define.
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(x86_64_register_number): Remove function.
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(x86_64_store_struct_return): Remove function.
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(x86_64_frameless_function_invocation,
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x86_64_function_has_prologue): Remove functions.
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(PROLOG_BUFSIZE): Remove define.
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(struct x86_64_frame_cache): New structure.
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(x86_64_alloc_frame_cache, x86_64_analyze_prologue,
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x86_64_frame_cache, x86_64_frame_this_id,
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x86_64_frame_prev_register, x86_64_frame_p,
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x86_64_sigtramp_frame_cache, x86_64_sigtramp_frame_this_id,
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x86_64_sigtramp_frame_prev_register, x86_sigtramp_frame_p): New
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functions.
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(x86_64_frame_unwind, x86_64_sigtramp_frame_unwind): New
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variables.
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(x86_64_skip_prologue): Rewrite in terms of
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x86_64_analyze_prologue.
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(x86_64_frame_base_address): New function.
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(x86_64_frame_base): New variable.
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(x86_64_save_dummy_frame_tos, x86_64_unwind_dummy_id): Rewrite.
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(x86_64_init_abi): Set register_type and push_dummy_call. Don't
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set deprecated_fp_regnum, deprecated_register_size,
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deprecated_register_bytes, register_raw_size, register_byte,
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register_virtual_type, register_convertiable,
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register_convert_to_virtual, convert_to_raw,
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deprecated_get_saved_register, deprecated_target_read_fp,
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deprecated_push_arguments, deprecated_push_return_address,
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deprecated_pop_frame, deprecated_store_struct_return,
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deprecated_frame_init_saved_regs, deprecated_frame_chain,
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frameless_function_invocation, deprecated_frame_saved_pc,
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deprecated_saved_pc_after_call, frame_num_args, pc_in_sigtramp,
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dwarf2_build_frame_info, deprecated_init_extra_frame_info,
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deprecated_init_frame_pc and virtual_frame_pointer. Call
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frame_unwind_append_predicate to register x86_64_sigtramp_frame_p
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and x86_64_frame_p. Call frame_base_set_default to register
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x86_64_frame_base.
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(I387_FISEG_REGNUM, I387_FOSEG_REGNUM): New defines.
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(x86_64_supply_fxsave, x86_64_fill_fxsave): New functions.
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(_initialize_x86_64_tdep): Remove function.
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* x86-64-linux-tdep.c: Don't include "dwarf2cfi.h".
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(LINUX_SIGINFO_SIZE, LINUX_UCONTEXT_SIGCONTEXT_OFFSET,
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LINUX_SIGCONTEXT_PC_OFFSET, LINUX_SIGCONTEXT_FP_OFFSET): Don't
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define.
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(X86_64_LINUX_UCONTEXT_SIGCONTEXT_OFFSET): Define.
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(x86_64_linux_sigcontext_addr): Rewrite.
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(x86_64_linux_sigtramp_saved_pc, x86_64_linux_saved_pc_after_call,
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x86_64_linux_frame_saved_pc): Remove functions.
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(x86_64_linux_pc_in_sigtramp): Renamed from
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x86_64_linux_in_sigtramp. Try harder to recognize a signal
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trampoline.
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(x86_64_linux_frame_chain, x86_64_init_frame_pc):
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Remove_functions.
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(x86_64_linux_init_abi): Set pc_in_sigtramp. Initialize
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TDEP->sigcontext_addr, TDEP->sc_pc_offset and TDEP->sc_sp_offset.
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* x86-64-linux-nat.c: Sync with i386-linux-tdep.c.
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(x86_64_regmap): Rename to regmap.
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(GETREGS_SUPPLIES): Use X86_64_NUM_GREGS instead of
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x86_64_num_gregs.
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(supply_gregset, fill_gregset): Likewise. Use regmap instead of
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x86_64_regmap.
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(x86_64_fxsave_offset): Remove function.
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(supply_fpregset): Simply call x86_64_supply_fxsave.
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(fill_fpregset): Simply call x86_64_fill_fxsave.
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(fetch_inferior_registers, store_inferior_registers): Avoid
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asignment in if-statement.
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(LINUX_SYSCALL_LEN, LINUX_SYSCALL_REGNUM, SYS_Sigreturn,
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SYS_rt_sigreturn, LINUX_SIGCONTEXT_EFLAGS_OFFSET,
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LINUX_UCONTEXT_SIGCONTEXT_OFFSET): Remove defines.
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(fetch_core_registers): Remove function.
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(linux_elf_core_fns): Remove.
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(offsetoff): Don't define.
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(_initialize_x86_64_linux_nat, kernel_u_size): Remove functions.
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* config/i386/x86-64linux.mt (TDEPFILES): Add i386-linux-tdep.o.
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* config/i386/x86-64linux.mh (NATDEPFILES): Remove core-aout.o,
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add core-regset.o.
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* config/i386/nm-x86-64linux.h: Use NM_X86_64_LINUX_H for
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protection against multiple includes instead of NM_X86_64_h. Add
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various comments. Include "config/nm-linux.h". Don't include
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<signal.h>.
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(REGISTER_U_ADDR, KERNEL_U_SIZE, U_REGS_OFFSET, KERN_U_ADDR,
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GET_THREAD_SIGNALS): Remove defines.
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(x86_64_register_u_addr, kernel_u_size,
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lin_thread_get_thread_signals): Remove prototypes.
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(PTRACE_ARG3_TYPE, PTRACE_XFER_TYPE): Define to `long'.
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[HAVE_LINK_H]: Don't include "solib.h".
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[HAVE_LINK_H] (SVR4_SHARED_LIBS): Remove define.
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* config/i386/tm-x86-64linux.h: Fix comments.
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* Makefile.in (x86-64-linux-nat.o, x86_64-linux-tdep.o,
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x86-64-tdep.o): Update dependencies.
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2003-05-30 Andrew Cagney <cagney@redhat.com>
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* config/sparc/tm-sparc.h (sparc_extract_struct_value_address):
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@ -2350,13 +2350,15 @@ wince.o: wince.c $(defs_h) $(frame_h) $(inferior_h) $(target_h) $(gdbcore_h) \
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$(regcache_h)
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wrapper.o: wrapper.c $(defs_h) $(value_h) $(wrapper_h)
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x86-64-linux-nat.o: x86-64-linux-nat.c $(defs_h) $(inferior_h) $(gdbcore_h) \
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$(regcache_h) $(gdb_assert_h) $(x86_64_tdep_h)
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$(regcache_h) $(gdb_assert_h) $(gdb_string_h) $(gregset_h) \
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$(x86_64_tdep_h)
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x86-64-linux-tdep.o: x86-64-linux-tdep.c $(defs_h) $(inferior_h) $(gdbcore_h) \
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$(gdb_string_h) $(regcache_h) $(x86_64_tdep_h) $(dwarf2cfi_h) \
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$(osabi_h)
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x86-64-tdep.o: x86-64-tdep.c $(defs_h) $(inferior_h) $(gdbcore_h) \
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$(gdbcmd_h) $(arch_utils_h) $(regcache_h) $(symfile_h) $(objfiles_h) \
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$(x86_64_tdep_h) $(dwarf2cfi_h) $(gdb_assert_h) $(block_h)
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$(regcache_h) $(osabi_h) $(gdb_string_h) $(x86_64_tdep_h)
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x86-64-tdep.o: x86-64-tdep.c $(defs_h) \
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$(inferior_h) $(gdbcore_h) $(arch_utils_h) $(block_h) \
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$(dummy_frame_h) $(frame_h) $(frame_base_h) $(frame_unwind_h) \
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$(inferior_h) $(gdbcmd_h) $(gdbcode_h) $(objfiles_h) $(regcache_h) \
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$(symfile_h) $(gdb_assert_h) $(x86_64_tdep_h) $(i387_tdep_h)
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xcoffread.o: xcoffread.c $(defs_h) $(bfd_h) $(gdb_string_h) $(gdb_stat_h) \
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$(coff_internal_h) $(libcoff_h) $(coff_xcoff_h) $(libxcoff_h) \
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$(coff_rs6000_h) $(symtab_h) $(gdbtypes_h) $(symfile_h) \
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@ -1,7 +1,8 @@
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/* Native support for GNU/Linux x86-64.
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Copyright 2001, 2002 Free Software Foundation, Inc. Contributed by
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Jiri Smid, SuSE Labs.
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Copyright 2001, 2002, 2003 Free Software Foundation, Inc.
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Contributed by Jiri Smid, SuSE Labs.
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This file is part of GDB.
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@ -20,15 +21,16 @@
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#ifndef NM_X86_64_H
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#define NM_X86_64_H
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#ifndef NM_X86_64_LINUX_H
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#define NM_X86_64_LINUX_H
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/* GNU/Linux supports the i386 hardware debugging registers. */
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#define I386_USE_GENERIC_WATCHPOINTS
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#include "i386/nm-i386.h"
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#include "config/nm-linux.h"
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#define I386_USE_GENERIC_WATCHPOINTS
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#include "i386/nm-i386.h"
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/* Support for 8-byte wide hw watchpoints. */
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/* Support for 8-byte wide hardware watchpoints. */
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#define TARGET_HAS_DR_LEN_8 1
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/* Provide access to the i386 hardware debugging registers. */
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@ -50,41 +52,17 @@ extern unsigned long x86_64_linux_dr_get_status (void);
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x86_64_linux_dr_get_status ()
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#define REGISTER_U_ADDR(addr, blockend, regno) \
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(addr) = x86_64_register_u_addr ((blockend),(regno));
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CORE_ADDR x86_64_register_u_addr (CORE_ADDR, int);
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/* Type of the third argument to the `ptrace' system call. */
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#define PTRACE_ARG3_TYPE long
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/* Return the size of the user struct. */
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#define KERNEL_U_SIZE kernel_u_size()
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extern int kernel_u_size (void);
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/* Offset of the registers within the user area. */
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#define U_REGS_OFFSET 0
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/* This is the amount to subtract from u.u_ar0
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to get the offset in the core file of the register values. */
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#define KERNEL_U_ADDR 0x0
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#define PTRACE_ARG3_TYPE void*
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#define PTRACE_XFER_TYPE unsigned long
|
||||
|
||||
|
||||
/* We define this if link.h is available, because with ELF we use SVR4 style
|
||||
shared libraries. */
|
||||
|
||||
#ifdef HAVE_LINK_H
|
||||
#define SVR4_SHARED_LIBS
|
||||
#include "solib.h" /* Support for shared libraries. */
|
||||
#endif
|
||||
/* Type of the fourth argument to the `ptrace' system call. */
|
||||
#define PTRACE_XFER_TYPE long
|
||||
|
||||
/* Override copies of {fetch,store}_inferior_registers in `infptrace.c'. */
|
||||
#define FETCH_INFERIOR_REGISTERS
|
||||
|
||||
|
||||
/* FIXME: kettenis/20030416: Why? */
|
||||
#undef PREPARE_TO_PROCEED
|
||||
|
||||
#include <signal.h>
|
||||
|
||||
extern void lin_thread_get_thread_signals (sigset_t * mask);
|
||||
#define GET_THREAD_SIGNALS(mask) lin_thread_get_thread_signals (mask)
|
||||
|
||||
#endif /* NM_X86_64.h */
|
||||
#endif /* NM_X86_64_LINUX_H */
|
||||
|
@ -1,6 +1,6 @@
|
||||
/* Definitions to target GDB to GNU/Linux on x86-64.
|
||||
|
||||
Copyright 2002 Free Software Foundation, Inc.
|
||||
Copyright 2002, 2003 Free Software Foundation, Inc.
|
||||
|
||||
Contributed by Michal Ludvig, SuSE Labs.
|
||||
|
||||
@ -25,10 +25,10 @@
|
||||
#define TM_X86_64LINUX_H
|
||||
|
||||
/* We define SVR4_SHARED_LIBS unconditionally, on the assumption that
|
||||
* link.h is available on all linux platforms. For I386 and SH3/4,
|
||||
* we hard-code the information rather than use link.h anyway (for
|
||||
* the benefit of cross-debugging). We may move to doing that for
|
||||
* other architectures as well. */
|
||||
link.h is available on all linux platforms. For I386 and SH3/4, we
|
||||
hard-code the information rather than use link.h anyway (for the
|
||||
benefit of cross-debugging). We may move to doing that for other
|
||||
architectures as well. */
|
||||
|
||||
#define SVR4_SHARED_LIBS
|
||||
#include "solib.h" /* Support for shared libraries. */
|
||||
|
@ -4,8 +4,9 @@ XM_FILE= xm-i386.h
|
||||
|
||||
NAT_FILE= nm-x86-64linux.h
|
||||
NATDEPFILES= infptrace.o inftarg.o fork-child.o corelow.o \
|
||||
core-aout.o i386-nat.o x86-64-linux-nat.o \
|
||||
proc-service.o thread-db.o lin-lwp.o \
|
||||
linux-proc.o gcore.o
|
||||
core-regset.o i386-nat.o x86-64-linux-nat.o \
|
||||
proc-service.o thread-db.o lin-lwp.o linux-proc.o gcore.o
|
||||
|
||||
# The dynamically loaded libthread_db needs access to symbols in the
|
||||
# gdb executable.
|
||||
LOADLIBES = -ldl -rdynamic
|
||||
|
@ -1,6 +1,6 @@
|
||||
# Target: AMD x86-64 running GNU/Linux
|
||||
TDEPFILES= x86-64-tdep.o x86-64-linux-tdep.o dwarf2cfi.o \
|
||||
i386-tdep.o i387-tdep.o \
|
||||
TDEPFILES= x86-64-tdep.o x86-64-linux-tdep.o \
|
||||
i386-tdep.o i387-tdep.o i386-linux-tdep.o \
|
||||
solib.o solib-svr4.o solib-legacy.o
|
||||
|
||||
GDB_MULTI_ARCH=GDB_MULTI_ARCH_TM
|
||||
|
@ -25,20 +25,30 @@
|
||||
#include "inferior.h"
|
||||
#include "gdbcore.h"
|
||||
#include "regcache.h"
|
||||
|
||||
#include "gdb_assert.h"
|
||||
#include "gdb_string.h"
|
||||
#include "x86-64-tdep.h"
|
||||
|
||||
#include <sys/ptrace.h>
|
||||
#include <sys/debugreg.h>
|
||||
#include <sys/syscall.h>
|
||||
#include <sys/procfs.h>
|
||||
#include <sys/reg.h>
|
||||
|
||||
/* Prototypes for supply_gregset etc. */
|
||||
#include "gregset.h"
|
||||
|
||||
#include "x86-64-tdep.h"
|
||||
|
||||
/* The register sets used in GNU/Linux ELF core-dumps are identical to
|
||||
the register sets used by `ptrace'. The corresponding types are
|
||||
`elf_gregset_t' for the general-purpose registers (with
|
||||
`elf_greg_t' the type of a single GP register) and `elf_fpregset_t'
|
||||
for the floating-point registers.
|
||||
|
||||
/* Mapping between the general-purpose registers in `struct user'
|
||||
format and GDB's register array layout. */
|
||||
|
||||
static int x86_64_regmap[] = {
|
||||
static int regmap[] =
|
||||
{
|
||||
RAX, RBX, RCX, RDX,
|
||||
RSI, RDI, RBP, RSP,
|
||||
R8, R9, R10, R11,
|
||||
@ -47,6 +57,209 @@ static int x86_64_regmap[] = {
|
||||
DS, ES, FS, GS
|
||||
};
|
||||
|
||||
/* Which ptrace request retrieves which registers?
|
||||
These apply to the corresponding SET requests as well. */
|
||||
|
||||
#define GETREGS_SUPPLIES(regno) \
|
||||
(0 <= (regno) && (regno) < X86_64_NUM_GREGS)
|
||||
|
||||
#define GETFPREGS_SUPPLIES(regno) \
|
||||
(FP0_REGNUM <= (regno) && (regno) <= MXCSR_REGNUM)
|
||||
|
||||
|
||||
/* Transfering the general-purpose registers between GDB, inferiors
|
||||
and core files. */
|
||||
|
||||
/* Fill GDB's register array with the general-purpose register values
|
||||
in *GREGSETP. */
|
||||
|
||||
void
|
||||
supply_gregset (elf_gregset_t *gregsetp)
|
||||
{
|
||||
elf_greg_t *regp = (elf_greg_t *) gregsetp;
|
||||
int i;
|
||||
|
||||
for (i = 0; i < X86_64_NUM_GREGS; i++)
|
||||
supply_register (i, regp + regmap[i]);
|
||||
}
|
||||
|
||||
/* Fill register REGNO (if it is a general-purpose register) in
|
||||
*GREGSETPS with the value in GDB's register array. If REGNO is -1,
|
||||
do this for all registers. */
|
||||
|
||||
void
|
||||
fill_gregset (elf_gregset_t *gregsetp, int regno)
|
||||
{
|
||||
elf_greg_t *regp = (elf_greg_t *) gregsetp;
|
||||
int i;
|
||||
|
||||
for (i = 0; i < X86_64_NUM_GREGS; i++)
|
||||
if (regno == -1 || regno == i)
|
||||
regcache_collect (i, regp + regmap[i]);
|
||||
}
|
||||
|
||||
/* Fetch all general-purpose registers from process/thread TID and
|
||||
store their values in GDB's register array. */
|
||||
|
||||
static void
|
||||
fetch_regs (int tid)
|
||||
{
|
||||
elf_gregset_t regs;
|
||||
|
||||
if (ptrace (PTRACE_GETREGS, tid, 0, (long) ®s) < 0)
|
||||
perror_with_name ("Couldn't get registers");
|
||||
|
||||
supply_gregset (®s);
|
||||
}
|
||||
|
||||
/* Store all valid general-purpose registers in GDB's register array
|
||||
into the process/thread specified by TID. */
|
||||
|
||||
static void
|
||||
store_regs (int tid, int regno)
|
||||
{
|
||||
elf_gregset_t regs;
|
||||
|
||||
if (ptrace (PTRACE_GETREGS, tid, 0, (long) ®s) < 0)
|
||||
perror_with_name ("Couldn't get registers");
|
||||
|
||||
fill_gregset (®s, regno);
|
||||
|
||||
if (ptrace (PTRACE_SETREGS, tid, 0, (long) ®s) < 0)
|
||||
perror_with_name ("Couldn't write registers");
|
||||
}
|
||||
|
||||
|
||||
/* Transfering floating-point registers between GDB, inferiors and cores. */
|
||||
|
||||
/* Fill GDB's register array with the floating-point and SSE register
|
||||
values in *FPREGSETP. */
|
||||
|
||||
void
|
||||
supply_fpregset (elf_fpregset_t *fpregsetp)
|
||||
{
|
||||
x86_64_supply_fxsave ((char *) fpregsetp);
|
||||
}
|
||||
|
||||
/* Fill register REGNUM (if it is a floating-point or SSE register) in
|
||||
*FPREGSETP with the value in GDB's register array. If REGNUM is
|
||||
-1, do this for all registers. */
|
||||
|
||||
void
|
||||
fill_fpregset (elf_fpregset_t *fpregsetp, int regnum)
|
||||
{
|
||||
x86_64_fill_fxsave ((char *) fpregsetp, regnum);
|
||||
}
|
||||
|
||||
/* Fetch all floating-point registers from process/thread TID and store
|
||||
thier values in GDB's register array. */
|
||||
|
||||
static void
|
||||
fetch_fpregs (int tid)
|
||||
{
|
||||
elf_fpregset_t fpregs;
|
||||
|
||||
if (ptrace (PTRACE_GETFPREGS, tid, 0, (long) &fpregs) < 0)
|
||||
perror_with_name ("Couldn't get floating point status");
|
||||
|
||||
supply_fpregset (&fpregs);
|
||||
}
|
||||
|
||||
/* Store all valid floating-point registers in GDB's register array
|
||||
into the process/thread specified by TID. */
|
||||
|
||||
static void
|
||||
store_fpregs (int tid, int regno)
|
||||
{
|
||||
elf_fpregset_t fpregs;
|
||||
|
||||
if (ptrace (PTRACE_GETFPREGS, tid, 0, (long) &fpregs) < 0)
|
||||
perror_with_name ("Couldn't get floating point status");
|
||||
|
||||
fill_fpregset (&fpregs, regno);
|
||||
|
||||
if (ptrace (PTRACE_SETFPREGS, tid, 0, (long) &fpregs) < 0)
|
||||
perror_with_name ("Couldn't write floating point status");
|
||||
}
|
||||
|
||||
|
||||
/* Transferring arbitrary registers between GDB and inferior. */
|
||||
|
||||
/* Fetch register REGNO from the child process. If REGNO is -1, do
|
||||
this for all registers (including the floating point and SSE
|
||||
registers). */
|
||||
|
||||
void
|
||||
fetch_inferior_registers (int regno)
|
||||
{
|
||||
int tid;
|
||||
|
||||
/* GNU/Linux LWP ID's are process ID's. */
|
||||
tid = TIDGET (inferior_ptid);
|
||||
if (tid == 0)
|
||||
tid = PIDGET (inferior_ptid); /* Not a threaded program. */
|
||||
|
||||
if (regno == -1)
|
||||
{
|
||||
fetch_regs (tid);
|
||||
fetch_fpregs (tid);
|
||||
return;
|
||||
}
|
||||
|
||||
if (GETREGS_SUPPLIES (regno))
|
||||
{
|
||||
fetch_regs (tid);
|
||||
return;
|
||||
}
|
||||
|
||||
if (GETFPREGS_SUPPLIES (regno))
|
||||
{
|
||||
fetch_fpregs (tid);
|
||||
return;
|
||||
}
|
||||
|
||||
internal_error (__FILE__, __LINE__,
|
||||
"Got request for bad register number %d.", regno);
|
||||
}
|
||||
|
||||
/* Store register REGNO back into the child process. If REGNO is -1,
|
||||
do this for all registers (including the floating-point and SSE
|
||||
registers). */
|
||||
|
||||
void
|
||||
store_inferior_registers (int regno)
|
||||
{
|
||||
int tid;
|
||||
|
||||
/* GNU/Linux LWP ID's are process ID's. */
|
||||
tid = TIDGET (inferior_ptid);
|
||||
if (tid == 0)
|
||||
tid = PIDGET (inferior_ptid); /* Not a threaded program. */
|
||||
|
||||
if (regno == -1)
|
||||
{
|
||||
store_regs (tid, regno);
|
||||
store_fpregs (tid, regno);
|
||||
return;
|
||||
}
|
||||
|
||||
if (GETREGS_SUPPLIES (regno))
|
||||
{
|
||||
store_regs (tid, regno);
|
||||
return;
|
||||
}
|
||||
|
||||
if (GETFPREGS_SUPPLIES (regno))
|
||||
{
|
||||
store_fpregs (tid, regno);
|
||||
return;
|
||||
}
|
||||
|
||||
internal_error (__FILE__, __LINE__,
|
||||
"Got request to store bad register number %d.", regno);
|
||||
}
|
||||
|
||||
|
||||
static unsigned long
|
||||
x86_64_linux_dr_get (int regnum)
|
||||
{
|
||||
@ -119,374 +332,3 @@ x86_64_linux_dr_get_status (void)
|
||||
{
|
||||
return x86_64_linux_dr_get (DR_STATUS);
|
||||
}
|
||||
|
||||
|
||||
/* The register sets used in GNU/Linux ELF core-dumps are identical to
|
||||
the register sets used by `ptrace'. */
|
||||
|
||||
#define GETREGS_SUPPLIES(regno) \
|
||||
(0 <= (regno) && (regno) < x86_64_num_gregs)
|
||||
#define GETFPREGS_SUPPLIES(regno) \
|
||||
(FP0_REGNUM <= (regno) && (regno) <= MXCSR_REGNUM)
|
||||
|
||||
|
||||
/* Transfering the general-purpose registers between GDB, inferiors
|
||||
and core files. */
|
||||
|
||||
/* Fill GDB's register array with the general-purpose register values
|
||||
in *GREGSETP. */
|
||||
|
||||
void
|
||||
supply_gregset (elf_gregset_t * gregsetp)
|
||||
{
|
||||
elf_greg_t *regp = (elf_greg_t *) gregsetp;
|
||||
int i;
|
||||
|
||||
for (i = 0; i < x86_64_num_gregs; i++)
|
||||
supply_register (i, (char *) (regp + x86_64_regmap[i]));
|
||||
}
|
||||
|
||||
/* Fill register REGNO (if it is a general-purpose register) in
|
||||
*GREGSETPS with the value in GDB's register array. If REGNO is -1,
|
||||
do this for all registers. */
|
||||
|
||||
void
|
||||
fill_gregset (elf_gregset_t * gregsetp, int regno)
|
||||
{
|
||||
elf_greg_t *regp = (elf_greg_t *) gregsetp;
|
||||
int i;
|
||||
|
||||
for (i = 0; i < x86_64_num_gregs; i++)
|
||||
if ((regno == -1 || regno == i))
|
||||
regcache_collect (i, (char *) (regp + x86_64_regmap[i]));
|
||||
}
|
||||
|
||||
/* Fetch all general-purpose registers from process/thread TID and
|
||||
store their values in GDB's register array. */
|
||||
|
||||
static void
|
||||
fetch_regs (int tid)
|
||||
{
|
||||
elf_gregset_t regs;
|
||||
|
||||
if (ptrace (PTRACE_GETREGS, tid, 0, (long) ®s) < 0)
|
||||
perror_with_name ("Couldn't get registers");
|
||||
|
||||
supply_gregset (®s);
|
||||
}
|
||||
|
||||
/* Store all valid general-purpose registers in GDB's register array
|
||||
into the process/thread specified by TID. */
|
||||
|
||||
static void
|
||||
store_regs (int tid, int regno)
|
||||
{
|
||||
elf_gregset_t regs;
|
||||
|
||||
if (ptrace (PTRACE_GETREGS, tid, 0, (long) ®s) < 0)
|
||||
perror_with_name ("Couldn't get registers");
|
||||
|
||||
fill_gregset (®s, regno);
|
||||
|
||||
if (ptrace (PTRACE_SETREGS, tid, 0, (long) ®s) < 0)
|
||||
perror_with_name ("Couldn't write registers");
|
||||
}
|
||||
|
||||
|
||||
/* Transfering floating-point registers between GDB, inferiors and cores. */
|
||||
|
||||
static void *
|
||||
x86_64_fxsave_offset (elf_fpregset_t * fxsave, int regnum)
|
||||
{
|
||||
const char *reg_name;
|
||||
int reg_index;
|
||||
|
||||
gdb_assert (x86_64_num_gregs - 1 < regnum && regnum < x86_64_num_regs);
|
||||
|
||||
reg_name = x86_64_register_name (regnum);
|
||||
|
||||
if (reg_name[0] == 's' && reg_name[1] == 't')
|
||||
{
|
||||
reg_index = reg_name[2] - '0';
|
||||
return &fxsave->st_space[reg_index * 2];
|
||||
}
|
||||
|
||||
if (reg_name[0] == 'x' && reg_name[1] == 'm' && reg_name[2] == 'm')
|
||||
{
|
||||
reg_index = reg_name[3] - '0';
|
||||
return &fxsave->xmm_space[reg_index * 4];
|
||||
}
|
||||
|
||||
if (strcmp (reg_name, "mxcsr") == 0)
|
||||
return &fxsave->mxcsr;
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/* Fill GDB's register array with the floating-point and SSE register
|
||||
values in *FXSAVE. This function masks off any of the reserved
|
||||
bits in *FXSAVE. */
|
||||
|
||||
void
|
||||
supply_fpregset (elf_fpregset_t * fxsave)
|
||||
{
|
||||
int i, reg_st0, reg_mxcsr;
|
||||
|
||||
reg_st0 = x86_64_register_number ("st0");
|
||||
reg_mxcsr = x86_64_register_number ("mxcsr");
|
||||
|
||||
gdb_assert (reg_st0 > 0 && reg_mxcsr > reg_st0);
|
||||
|
||||
for (i = reg_st0; i <= reg_mxcsr; i++)
|
||||
supply_register (i, x86_64_fxsave_offset (fxsave, i));
|
||||
}
|
||||
|
||||
/* Fill register REGNUM (if it is a floating-point or SSE register) in
|
||||
*FXSAVE with the value in GDB's register array. If REGNUM is -1, do
|
||||
this for all registers. This function doesn't touch any of the
|
||||
reserved bits in *FXSAVE. */
|
||||
|
||||
void
|
||||
fill_fpregset (elf_fpregset_t * fxsave, int regnum)
|
||||
{
|
||||
int i, last_regnum = MXCSR_REGNUM;
|
||||
void *ptr;
|
||||
|
||||
if (gdbarch_tdep (current_gdbarch)->num_xmm_regs == 0)
|
||||
last_regnum = FOP_REGNUM;
|
||||
|
||||
for (i = FP0_REGNUM; i <= last_regnum; i++)
|
||||
if (regnum == -1 || regnum == i)
|
||||
{
|
||||
ptr = x86_64_fxsave_offset (fxsave, i);
|
||||
if (ptr)
|
||||
regcache_collect (i, ptr);
|
||||
}
|
||||
}
|
||||
|
||||
/* Fetch all floating-point registers from process/thread TID and store
|
||||
thier values in GDB's register array. */
|
||||
|
||||
static void
|
||||
fetch_fpregs (int tid)
|
||||
{
|
||||
elf_fpregset_t fpregs;
|
||||
|
||||
if (ptrace (PTRACE_GETFPREGS, tid, 0, (long) &fpregs) < 0)
|
||||
perror_with_name ("Couldn't get floating point status");
|
||||
|
||||
supply_fpregset (&fpregs);
|
||||
}
|
||||
|
||||
/* Store all valid floating-point registers in GDB's register array
|
||||
into the process/thread specified by TID. */
|
||||
|
||||
static void
|
||||
store_fpregs (int tid, int regno)
|
||||
{
|
||||
elf_fpregset_t fpregs;
|
||||
|
||||
if (ptrace (PTRACE_GETFPREGS, tid, 0, (long) &fpregs) < 0)
|
||||
perror_with_name ("Couldn't get floating point status");
|
||||
|
||||
fill_fpregset (&fpregs, regno);
|
||||
|
||||
if (ptrace (PTRACE_SETFPREGS, tid, 0, (long) &fpregs) < 0)
|
||||
perror_with_name ("Couldn't write floating point status");
|
||||
}
|
||||
|
||||
|
||||
/* Transferring arbitrary registers between GDB and inferior. */
|
||||
|
||||
/* Fetch register REGNO from the child process. If REGNO is -1, do
|
||||
this for all registers (including the floating point and SSE
|
||||
registers). */
|
||||
|
||||
void
|
||||
fetch_inferior_registers (int regno)
|
||||
{
|
||||
int tid;
|
||||
|
||||
/* GNU/Linux LWP ID's are process ID's. */
|
||||
if ((tid = TIDGET (inferior_ptid)) == 0)
|
||||
tid = PIDGET (inferior_ptid); /* Not a threaded program. */
|
||||
|
||||
if (regno == -1)
|
||||
{
|
||||
fetch_regs (tid);
|
||||
fetch_fpregs (tid);
|
||||
return;
|
||||
}
|
||||
|
||||
if (GETREGS_SUPPLIES (regno))
|
||||
{
|
||||
fetch_regs (tid);
|
||||
return;
|
||||
}
|
||||
|
||||
if (GETFPREGS_SUPPLIES (regno))
|
||||
{
|
||||
fetch_fpregs (tid);
|
||||
return;
|
||||
}
|
||||
|
||||
internal_error (__FILE__, __LINE__,
|
||||
"Got request for bad register number %d.", regno);
|
||||
}
|
||||
|
||||
/* Store register REGNO back into the child process. If REGNO is -1,
|
||||
do this for all registers (including the floating point and SSE
|
||||
registers). */
|
||||
void
|
||||
store_inferior_registers (int regno)
|
||||
{
|
||||
int tid;
|
||||
|
||||
/* GNU/Linux LWP ID's are process ID's. */
|
||||
if ((tid = TIDGET (inferior_ptid)) == 0)
|
||||
tid = PIDGET (inferior_ptid); /* Not a threaded program. */
|
||||
|
||||
if (regno == -1)
|
||||
{
|
||||
store_regs (tid, regno);
|
||||
store_fpregs (tid, regno);
|
||||
return;
|
||||
}
|
||||
|
||||
if (GETREGS_SUPPLIES (regno))
|
||||
{
|
||||
store_regs (tid, regno);
|
||||
return;
|
||||
}
|
||||
|
||||
if (GETFPREGS_SUPPLIES (regno))
|
||||
{
|
||||
store_fpregs (tid, regno);
|
||||
return;
|
||||
}
|
||||
|
||||
internal_error (__FILE__, __LINE__,
|
||||
"Got request to store bad register number %d.", regno);
|
||||
}
|
||||
|
||||
|
||||
static const unsigned char linux_syscall[] = { 0x0f, 0x05 };
|
||||
|
||||
#define LINUX_SYSCALL_LEN (sizeof linux_syscall)
|
||||
|
||||
/* The system call number is stored in the %rax register. */
|
||||
#define LINUX_SYSCALL_REGNUM 0 /* %rax */
|
||||
|
||||
/* We are specifically interested in the sigreturn and rt_sigreturn
|
||||
system calls. */
|
||||
|
||||
#ifndef SYS_sigreturn
|
||||
#define SYS_sigreturn __NR_sigreturn
|
||||
#endif
|
||||
#ifndef SYS_rt_sigreturn
|
||||
#define SYS_rt_sigreturn __NR_rt_sigreturn
|
||||
#endif
|
||||
|
||||
/* Offset to saved processor flags, from <asm/sigcontext.h>. */
|
||||
#define LINUX_SIGCONTEXT_EFLAGS_OFFSET (152)
|
||||
/* Offset to saved processor registers from <asm/ucontext.h> */
|
||||
#define LINUX_UCONTEXT_SIGCONTEXT_OFFSET (36)
|
||||
|
||||
/* Interpreting register set info found in core files. */
|
||||
/* Provide registers to GDB from a core file.
|
||||
|
||||
CORE_REG_SECT points to an array of bytes, which are the contents
|
||||
of a `note' from a core file which BFD thinks might contain
|
||||
register contents. CORE_REG_SIZE is its size.
|
||||
|
||||
WHICH says which register set corelow suspects this is:
|
||||
0 --- the general-purpose register set, in elf_gregset_t format
|
||||
2 --- the floating-point register set, in elf_fpregset_t format
|
||||
|
||||
REG_ADDR isn't used on GNU/Linux. */
|
||||
|
||||
static void
|
||||
fetch_core_registers (char *core_reg_sect, unsigned core_reg_size,
|
||||
int which, CORE_ADDR reg_addr)
|
||||
{
|
||||
elf_gregset_t gregset;
|
||||
elf_fpregset_t fpregset;
|
||||
switch (which)
|
||||
{
|
||||
case 0:
|
||||
if (core_reg_size != sizeof (gregset))
|
||||
warning ("Wrong size gregset in core file.");
|
||||
else
|
||||
{
|
||||
memcpy (&gregset, core_reg_sect, sizeof (gregset));
|
||||
supply_gregset (&gregset);
|
||||
}
|
||||
break;
|
||||
|
||||
case 2:
|
||||
if (core_reg_size != sizeof (fpregset))
|
||||
warning ("Wrong size fpregset in core file.");
|
||||
else
|
||||
{
|
||||
memcpy (&fpregset, core_reg_sect, sizeof (fpregset));
|
||||
supply_fpregset (&fpregset);
|
||||
}
|
||||
break;
|
||||
|
||||
default:
|
||||
/* We've covered all the kinds of registers we know about here,
|
||||
so this must be something we wouldn't know what to do with
|
||||
anyway. Just ignore it. */
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
/* Register that we are able to handle GNU/Linux ELF core file formats. */
|
||||
|
||||
static struct core_fns linux_elf_core_fns = {
|
||||
bfd_target_elf_flavour, /* core_flavour */
|
||||
default_check_format, /* check_format */
|
||||
default_core_sniffer, /* core_sniffer */
|
||||
fetch_core_registers, /* core_read_registers */
|
||||
NULL /* next */
|
||||
};
|
||||
|
||||
|
||||
#if !defined (offsetof)
|
||||
#define offsetof(TYPE, MEMBER) ((unsigned long) &((TYPE *)0)->MEMBER)
|
||||
#endif
|
||||
|
||||
/* Return the address of register REGNUM. BLOCKEND is the value of
|
||||
u.u_ar0, which should point to the registers. */
|
||||
CORE_ADDR
|
||||
x86_64_register_u_addr (CORE_ADDR blockend, int regnum)
|
||||
{
|
||||
struct user u;
|
||||
CORE_ADDR fpstate;
|
||||
CORE_ADDR ubase;
|
||||
ubase = blockend;
|
||||
if (IS_FP_REGNUM (regnum))
|
||||
{
|
||||
fpstate = ubase + ((char *) &u.i387.st_space - (char *) &u);
|
||||
return (fpstate + 16 * (regnum - FP0_REGNUM));
|
||||
}
|
||||
else if (IS_SSE_REGNUM (regnum))
|
||||
{
|
||||
fpstate = ubase + ((char *) &u.i387.xmm_space - (char *) &u);
|
||||
return (fpstate + 16 * (regnum - XMM0_REGNUM));
|
||||
}
|
||||
else
|
||||
return (ubase + 8 * x86_64_regmap[regnum]);
|
||||
}
|
||||
|
||||
void
|
||||
_initialize_x86_64_linux_nat (void)
|
||||
{
|
||||
add_core_fns (&linux_elf_core_fns);
|
||||
}
|
||||
|
||||
int
|
||||
kernel_u_size (void)
|
||||
{
|
||||
return (sizeof (struct user));
|
||||
}
|
||||
|
@ -24,19 +24,21 @@
|
||||
#include "defs.h"
|
||||
#include "inferior.h"
|
||||
#include "gdbcore.h"
|
||||
#include "gdb_string.h"
|
||||
#include "regcache.h"
|
||||
#include "x86-64-tdep.h"
|
||||
#include "dwarf2cfi.h"
|
||||
#include "osabi.h"
|
||||
|
||||
#define LINUX_SIGTRAMP_INSN0 (0x48) /* mov $NNNNNNNN,%rax */
|
||||
#define LINUX_SIGTRAMP_OFFSET0 (0)
|
||||
#define LINUX_SIGTRAMP_INSN1 (0x0f) /* syscall */
|
||||
#define LINUX_SIGTRAMP_OFFSET1 (7)
|
||||
#include "gdb_string.h"
|
||||
|
||||
static const unsigned char linux_sigtramp_code[] = {
|
||||
/* mov $__NR_rt_sigreturn,%rax */
|
||||
#include "x86-64-tdep.h"
|
||||
|
||||
#define LINUX_SIGTRAMP_INSN0 0x48 /* mov $NNNNNNNN, %rax */
|
||||
#define LINUX_SIGTRAMP_OFFSET0 0
|
||||
#define LINUX_SIGTRAMP_INSN1 0x0f /* syscall */
|
||||
#define LINUX_SIGTRAMP_OFFSET1 7
|
||||
|
||||
static const unsigned char linux_sigtramp_code[] =
|
||||
{
|
||||
/* mov $__NR_rt_sigreturn, %rax */
|
||||
LINUX_SIGTRAMP_INSN0, 0xc7, 0xc0, 0x0f, 0x00, 0x00, 0x00,
|
||||
/* syscall */
|
||||
LINUX_SIGTRAMP_INSN1, 0x05
|
||||
@ -51,6 +53,14 @@ static CORE_ADDR
|
||||
x86_64_linux_sigtramp_start (CORE_ADDR pc)
|
||||
{
|
||||
unsigned char buf[LINUX_SIGTRAMP_LEN];
|
||||
|
||||
/* We only recognize a signal trampoline if PC is at the start of
|
||||
one of the two instructions. We optimize for finding the PC at
|
||||
the start, as will be the case when the trampoline is not the
|
||||
first frame on the stack. We assume that in the case where the
|
||||
PC is not at the start of the instruction sequence, there will be
|
||||
a few trailing readable bytes on the stack. */
|
||||
|
||||
if (read_memory_nobpt (pc, (char *) buf, LINUX_SIGTRAMP_LEN) != 0)
|
||||
return 0;
|
||||
|
||||
@ -71,133 +81,61 @@ x86_64_linux_sigtramp_start (CORE_ADDR pc)
|
||||
return pc;
|
||||
}
|
||||
|
||||
#define LINUX_SIGINFO_SIZE 0
|
||||
|
||||
/* Offset to struct sigcontext in ucontext, from <asm/ucontext.h>. */
|
||||
#define LINUX_UCONTEXT_SIGCONTEXT_OFFSET 40
|
||||
|
||||
/* Offset to saved PC in sigcontext, from <asm/sigcontext.h>. */
|
||||
#define LINUX_SIGCONTEXT_PC_OFFSET 128
|
||||
#define LINUX_SIGCONTEXT_FP_OFFSET 120
|
||||
|
||||
/* Assuming FRAME is for a GNU/Linux sigtramp routine, return the
|
||||
address of the associated sigcontext structure. */
|
||||
static CORE_ADDR
|
||||
x86_64_linux_sigcontext_addr (struct frame_info *frame)
|
||||
{
|
||||
CORE_ADDR pc;
|
||||
ULONGEST rsp;
|
||||
|
||||
pc = x86_64_linux_sigtramp_start (get_frame_pc (frame));
|
||||
if (pc)
|
||||
{
|
||||
if (get_next_frame (frame))
|
||||
/* If this isn't the top frame, the next frame must be for the
|
||||
signal handler itself. The sigcontext structure is part of
|
||||
the user context. */
|
||||
return get_frame_base (get_next_frame (frame)) + LINUX_SIGINFO_SIZE +
|
||||
LINUX_UCONTEXT_SIGCONTEXT_OFFSET;
|
||||
|
||||
|
||||
/* This is the top frame. */
|
||||
rsp = read_register (SP_REGNUM);
|
||||
return rsp + LINUX_SIGINFO_SIZE + LINUX_UCONTEXT_SIGCONTEXT_OFFSET;
|
||||
|
||||
}
|
||||
|
||||
error ("Couldn't recognize signal trampoline.");
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Assuming FRAME is for a GNU/Linux sigtramp routine, return the
|
||||
saved program counter. */
|
||||
|
||||
static CORE_ADDR
|
||||
x86_64_linux_sigtramp_saved_pc (struct frame_info *frame)
|
||||
{
|
||||
CORE_ADDR addr;
|
||||
|
||||
addr = x86_64_linux_sigcontext_addr (frame);
|
||||
return read_memory_integer (addr + LINUX_SIGCONTEXT_PC_OFFSET, 8);
|
||||
}
|
||||
|
||||
/* Immediately after a function call, return the saved pc. */
|
||||
|
||||
CORE_ADDR
|
||||
x86_64_linux_saved_pc_after_call (struct frame_info *frame)
|
||||
{
|
||||
if ((get_frame_type (frame) == SIGTRAMP_FRAME))
|
||||
return x86_64_linux_sigtramp_saved_pc (frame);
|
||||
|
||||
return read_memory_integer (read_register (SP_REGNUM), 8);
|
||||
}
|
||||
|
||||
/* Saved Pc. Get it from sigcontext if within sigtramp. */
|
||||
CORE_ADDR
|
||||
x86_64_linux_frame_saved_pc (struct frame_info *frame)
|
||||
{
|
||||
if ((get_frame_type (frame) == SIGTRAMP_FRAME))
|
||||
return x86_64_linux_sigtramp_saved_pc (frame);
|
||||
return cfi_get_ra (frame);
|
||||
}
|
||||
|
||||
/* Return whether PC is in a GNU/Linux sigtramp routine. */
|
||||
|
||||
int
|
||||
x86_64_linux_in_sigtramp (CORE_ADDR pc, char *name)
|
||||
static int
|
||||
x86_64_linux_pc_in_sigtramp (CORE_ADDR pc, char *name)
|
||||
{
|
||||
if (name)
|
||||
return strcmp ("__restore_rt", name) == 0;
|
||||
/* If we have NAME, we can optimize the search. The trampoline is
|
||||
named __restore_rt. However, it isn't dynamically exported from
|
||||
the shared C library, so the trampoline may appear to be part of
|
||||
the preceding function. This should always be sigaction,
|
||||
__sigaction, or __libc_sigaction (all aliases to the same
|
||||
function). */
|
||||
if (name == NULL || strstr (name, "sigaction") != NULL)
|
||||
return (x86_64_linux_sigtramp_start (pc) != 0);
|
||||
|
||||
return (x86_64_linux_sigtramp_start (pc) != 0);
|
||||
return (strcmp ("__restore_rt", name) == 0);
|
||||
}
|
||||
|
||||
CORE_ADDR
|
||||
x86_64_linux_frame_chain (struct frame_info *fi)
|
||||
/* Offset to struct sigcontext in ucontext, from <asm/ucontext.h>. */
|
||||
#define X86_64_LINUX_UCONTEXT_SIGCONTEXT_OFFSET 40
|
||||
|
||||
/* Assuming NEXT_FRAME is a frame following a GNU/Linux sigtramp
|
||||
routine, return the address of the associated sigcontext structure. */
|
||||
|
||||
static CORE_ADDR
|
||||
x86_64_linux_sigcontext_addr (struct frame_info *next_frame)
|
||||
{
|
||||
ULONGEST addr;
|
||||
CORE_ADDR fp, pc;
|
||||
CORE_ADDR sp;
|
||||
char buf[8];
|
||||
|
||||
if (!(get_frame_type (fi) == SIGTRAMP_FRAME))
|
||||
{
|
||||
fp = cfi_frame_chain (fi);
|
||||
if (fp)
|
||||
return fp;
|
||||
else
|
||||
addr = get_frame_base (fi);
|
||||
}
|
||||
else
|
||||
addr = get_frame_base (get_next_frame (fi));
|
||||
frame_unwind_register (next_frame, SP_REGNUM, buf);
|
||||
sp = extract_unsigned_integer (buf, 8);
|
||||
|
||||
addr += LINUX_SIGINFO_SIZE + LINUX_UCONTEXT_SIGCONTEXT_OFFSET;
|
||||
|
||||
fp = read_memory_integer (addr + LINUX_SIGCONTEXT_FP_OFFSET, 8) + 8;
|
||||
|
||||
return fp;
|
||||
}
|
||||
|
||||
CORE_ADDR
|
||||
x86_64_init_frame_pc (int fromleaf, struct frame_info *fi)
|
||||
{
|
||||
CORE_ADDR addr;
|
||||
|
||||
if (get_next_frame (fi)
|
||||
&& (get_frame_type (get_next_frame (fi)) == SIGTRAMP_FRAME))
|
||||
{
|
||||
addr = get_frame_base (get_next_frame (get_next_frame (fi)))
|
||||
+ LINUX_SIGINFO_SIZE + LINUX_UCONTEXT_SIGCONTEXT_OFFSET;
|
||||
return read_memory_integer (addr + LINUX_SIGCONTEXT_PC_OFFSET, 8);
|
||||
}
|
||||
else
|
||||
return cfi_init_frame_pc (fromleaf, fi);
|
||||
/* The sigcontext structure is part of the user context. A pointer
|
||||
to the user context is passed as the third argument to the signal
|
||||
handler, i.e. in %rdx. Unfortunately %rdx isn't preserved across
|
||||
function calls so we can't use it. Fortunately the user context
|
||||
is part of the signal frame and the unwound %rsp directly points
|
||||
at it. */
|
||||
return sp + X86_64_LINUX_UCONTEXT_SIGCONTEXT_OFFSET;
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
x86_64_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
|
||||
{
|
||||
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
||||
x86_64_init_abi (info, gdbarch);
|
||||
|
||||
set_gdbarch_pc_in_sigtramp (gdbarch, x86_64_linux_pc_in_sigtramp);
|
||||
|
||||
tdep->sigcontext_addr = x86_64_linux_sigcontext_addr;
|
||||
tdep->sc_pc_offset = 16 * 8; /* From <asm/sigcontext.h>. */
|
||||
tdep->sc_sp_offset = 15 * 8;
|
||||
}
|
||||
|
||||
|
||||
/* Provide a prototype to silence -Wmissing-prototypes. */
|
||||
extern void _initialize_x86_64_linux_tdep (void);
|
||||
|
1085
gdb/x86-64-tdep.c
1085
gdb/x86-64-tdep.c
File diff suppressed because it is too large
Load Diff
@ -1,6 +1,8 @@
|
||||
/* Target-dependent code for GDB, the GNU debugger.
|
||||
Copyright 2001
|
||||
/* Target-dependent code for the x86-64.
|
||||
|
||||
Copyright 2001, 2003
|
||||
Free Software Foundation, Inc.
|
||||
|
||||
Contributed by Jiri Smid, SuSE Labs.
|
||||
|
||||
This file is part of GDB.
|
||||
@ -28,19 +30,22 @@ struct frame_info;
|
||||
|
||||
#include "i386-tdep.h"
|
||||
|
||||
extern int x86_64_num_regs;
|
||||
extern int x86_64_num_gregs;
|
||||
|
||||
int x86_64_register_number (const char *name);
|
||||
const char *x86_64_register_name (int reg_nr);
|
||||
|
||||
gdbarch_deprecated_frame_saved_pc_ftype x86_64_linux_frame_saved_pc;
|
||||
gdbarch_deprecated_saved_pc_after_call_ftype x86_64_linux_saved_pc_after_call;
|
||||
gdbarch_pc_in_sigtramp_ftype x86_64_linux_in_sigtramp;
|
||||
CORE_ADDR x86_64_linux_frame_chain (struct frame_info *fi);
|
||||
CORE_ADDR x86_64_init_frame_pc (int fromleaf, struct frame_info *fi);
|
||||
int x86_64_function_has_prologue (CORE_ADDR pc);
|
||||
/* Number of general purpose registers. */
|
||||
#define X86_64_NUM_GREGS 22
|
||||
|
||||
void x86_64_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch);
|
||||
|
||||
#endif
|
||||
/* Fill GDB's register array with the floating-point and SSE register
|
||||
values in *FXSAVE. This function masks off any of the reserved
|
||||
bits in *FXSAVE. */
|
||||
|
||||
void x86_64_supply_fxsave (char *fxsave);
|
||||
|
||||
/* Fill register REGNUM (if it is a floating-point or SSE register) in
|
||||
*FXSAVE with the value in GDB's register array. If REGNUM is -1, do
|
||||
this for all registers. This function doesn't touch any of the
|
||||
reserved bits in *FXSAVE. */
|
||||
|
||||
void x86_64_fill_fxsave (char *fxsave, int regnum);
|
||||
|
||||
#endif /* x86-64-tdep.h */
|
||||
|
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Reference in New Issue
Block a user