6ff0ba5f7b
The "source centric" /m option to the disassemble command is often unhelpful, e.g., in the presence of optimized code. This patch adds a /s modifier that is better. For one, /m only prints instructions from the originating source file, leaving out instructions from e.g., inlined functions from other files. gdb/ChangeLog: PR gdb/11833 * NEWS: Document new /s modifier for the disassemble command. * cli/cli-cmds.c (disassemble_command): Add support for /s. (_initialize_cli_cmds): Update online docs of disassemble command. * disasm.c: #include "source.h". (struct deprecated_dis_line_entry): Renamed from dis_line_entry. All uses updated. (dis_line_entry): New struct. (hash_dis_line_entry, eq_dis_line_entry): New functions. (allocate_dis_line_table): New functions. (maybe_add_dis_line_entry, line_has_code_p): New functions. (dump_insns): New arg end_pc. All callers updated. (do_mixed_source_and_assembly_deprecated): Renamed from do_mixed_source_and_assembly. All callers updated. (do_mixed_source_and_assembly): New function. (gdb_disassembly): Handle /s (DISASSEMBLY_SOURCE). * disasm.h (DISASSEMBLY_SOURCE_DEPRECATED): Renamed from DISASSEMBLY_SOURCE. All uses updated. (DISASSEMBLY_SOURCE): New macro. * mi/mi-cmd-disas.c (mi_cmd_disassemble): New modes 4,5. gdb/doc/ChangeLog: * gdb.texinfo (Machine Code): Update docs for mixed source/assembly disassembly. (GDB/MI Data Manipulation): Update docs for new disassembly modes. gdb/testsuite/ChangeLog: * gdb.mi/mi-disassemble.exp: Update. * gdb.base/disasm-optim.S: New file. * gdb.base/disasm-optim.c: New file. * gdb.base/disasm-optim.h: New file. * gdb.base/disasm-optim.exp: New file.
352 lines
10 KiB
ArmAsm
352 lines
10 KiB
ArmAsm
/* This testcase is part of GDB, the GNU debugger.
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Copyright (C) 2015 Free Software Foundation, Inc.
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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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This file was created with gcc -O2 -g -S -fverbose-asm -dA disasm-optim.c
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and then cleaning up the output. */
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.file "disasm-optim.c"
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.text
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.p2align 4,,15
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.globl main
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.type main, @function
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main:
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.LFB1:
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.file 1 "disasm-optim.c"
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# disasm-optim.c:24
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.loc 1 24 0
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.cfi_startproc
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# disasm-optim.c:25
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.loc 1 25 0
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movl y(%rip), %eax
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.LVL0:
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.LBB4:
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.LBB5:
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.file 2 "disasm-optim.h"
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# disasm-optim.h:21
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.loc 2 21 0
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testl %eax, %eax
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js .L6
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# disasm-optim.h:25
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.loc 2 25 0
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leal 10(%rax), %edx
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testl %eax, %eax
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movl $1, %eax
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.LVL1:
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cmovne %edx, %eax
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.LVL2:
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.L3:
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.LBE5:
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.LBE4:
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# disasm-optim.c:25
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.loc 1 25 0
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movl %eax, x(%rip)
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# disasm-optim.c:27
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.loc 1 27 0
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xorl %eax, %eax
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ret
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.LVL3:
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.L6:
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.LBB7:
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.LBB6:
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# disasm-optim.h:22
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.loc 2 22 0
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addl %eax, %eax
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.LVL4:
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jmp .L3
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.LBE6:
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.LBE7:
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.cfi_endproc
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.LFE1:
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.size main, .-main
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.comm y,4,4
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.comm x,4,4
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.text
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.Letext0:
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.section .debug_info,"",@progbits
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.Ldebug_info0:
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.long 0xb1 # Length of Compilation Unit Info
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.value 0x4 # DWARF version number
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.long .Ldebug_abbrev0 # Offset Into Abbrev. Section
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.byte 0x8 # Pointer Size (in bytes)
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.uleb128 0x1 # (DIE (0xb) DW_TAG_compile_unit)
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.long .LASF0 # DW_AT_producer: "GNU C 4.9.2 20150212 (Red Hat 4.9.2-6) -mtune=generic -march=x86-64 -g -O2"
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.byte 0x1 # DW_AT_language
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.long .LASF1 # DW_AT_name: "disasm-optim.c"
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.long .LASF2 # DW_AT_comp_dir: "/main/disassemble3/gdb/testsuite/gdb.base"
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.long .Ldebug_ranges0+0x30 # DW_AT_ranges
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.quad 0 # DW_AT_low_pc
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.long .Ldebug_line0 # DW_AT_stmt_list
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.uleb128 0x2 # (DIE (0x29) DW_TAG_subprogram)
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# DW_AT_external
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.ascii "foo\0" # DW_AT_name
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.byte 0x2 # DW_AT_decl_file (disasm-optim.h)
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.byte 0x13 # DW_AT_decl_line
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# DW_AT_prototyped
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.long 0x43 # DW_AT_type
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.byte 0x3 # DW_AT_inline
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.long 0x43 # DW_AT_sibling
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.uleb128 0x3 # (DIE (0x39) DW_TAG_formal_parameter)
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.ascii "a\0" # DW_AT_name
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.byte 0x2 # DW_AT_decl_file (disasm-optim.h)
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.byte 0x13 # DW_AT_decl_line
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.long 0x43 # DW_AT_type
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.byte 0 # end of children of DIE 0x29
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.uleb128 0x4 # (DIE (0x43) DW_TAG_base_type)
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.byte 0x4 # DW_AT_byte_size
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.byte 0x5 # DW_AT_encoding
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.ascii "int\0" # DW_AT_name
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.uleb128 0x5 # (DIE (0x4a) DW_TAG_subprogram)
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# DW_AT_external
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.long .LASF3 # DW_AT_name: "main"
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.byte 0x1 # DW_AT_decl_file (disasm-optim.c)
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.byte 0x17 # DW_AT_decl_line
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.long 0x43 # DW_AT_type
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.quad .LFB1 # DW_AT_low_pc
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.quad .LFE1-.LFB1 # DW_AT_high_pc
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.uleb128 0x1 # DW_AT_frame_base
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.byte 0x9c # DW_OP_call_frame_cfa
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# DW_AT_GNU_all_call_sites
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.long 0x89 # DW_AT_sibling
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.uleb128 0x6 # (DIE (0x6b) DW_TAG_inlined_subroutine)
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.long 0x29 # DW_AT_abstract_origin
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.quad .LBB4 # DW_AT_entry_pc
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.long .Ldebug_ranges0+0 # DW_AT_ranges
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.byte 0x1 # DW_AT_call_file (disasm-optim.c)
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.byte 0x19 # DW_AT_call_line
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.uleb128 0x7 # (DIE (0x7e) DW_TAG_formal_parameter)
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.long 0x39 # DW_AT_abstract_origin
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.long .LLST0 # DW_AT_location
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.byte 0 # end of children of DIE 0x6b
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.byte 0 # end of children of DIE 0x4a
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.uleb128 0x8 # (DIE (0x89) DW_TAG_variable)
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.ascii "x\0" # DW_AT_name
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.byte 0x1 # DW_AT_decl_file (disasm-optim.c)
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.byte 0x14 # DW_AT_decl_line
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.long 0x9c # DW_AT_type
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# DW_AT_external
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.uleb128 0x9 # DW_AT_location
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.byte 0x3 # DW_OP_addr
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.quad x
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.uleb128 0x9 # (DIE (0x9c) DW_TAG_volatile_type)
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.long 0x43 # DW_AT_type
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.uleb128 0x8 # (DIE (0xa1) DW_TAG_variable)
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.ascii "y\0" # DW_AT_name
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.byte 0x1 # DW_AT_decl_file (disasm-optim.c)
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.byte 0x14 # DW_AT_decl_line
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.long 0x9c # DW_AT_type
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# DW_AT_external
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.uleb128 0x9 # DW_AT_location
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.byte 0x3 # DW_OP_addr
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.quad y
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.byte 0 # end of children of DIE 0xb
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.section .debug_abbrev,"",@progbits
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.Ldebug_abbrev0:
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.uleb128 0x1 # (abbrev code)
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.uleb128 0x11 # (TAG: DW_TAG_compile_unit)
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.byte 0x1 # DW_children_yes
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.uleb128 0x25 # (DW_AT_producer)
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.uleb128 0xe # (DW_FORM_strp)
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.uleb128 0x13 # (DW_AT_language)
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.uleb128 0xb # (DW_FORM_data1)
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.uleb128 0x3 # (DW_AT_name)
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.uleb128 0xe # (DW_FORM_strp)
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.uleb128 0x1b # (DW_AT_comp_dir)
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.uleb128 0xe # (DW_FORM_strp)
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.uleb128 0x55 # (DW_AT_ranges)
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.uleb128 0x17 # (DW_FORM_sec_offset)
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.uleb128 0x11 # (DW_AT_low_pc)
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.uleb128 0x1 # (DW_FORM_addr)
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.uleb128 0x10 # (DW_AT_stmt_list)
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.uleb128 0x17 # (DW_FORM_sec_offset)
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.byte 0
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.byte 0
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.uleb128 0x2 # (abbrev code)
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.uleb128 0x2e # (TAG: DW_TAG_subprogram)
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.byte 0x1 # DW_children_yes
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.uleb128 0x3f # (DW_AT_external)
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.uleb128 0x19 # (DW_FORM_flag_present)
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.uleb128 0x3 # (DW_AT_name)
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.uleb128 0x8 # (DW_FORM_string)
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.uleb128 0x3a # (DW_AT_decl_file)
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.uleb128 0xb # (DW_FORM_data1)
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.uleb128 0x3b # (DW_AT_decl_line)
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.uleb128 0xb # (DW_FORM_data1)
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.uleb128 0x27 # (DW_AT_prototyped)
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.uleb128 0x19 # (DW_FORM_flag_present)
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.uleb128 0x49 # (DW_AT_type)
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.uleb128 0x13 # (DW_FORM_ref4)
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.uleb128 0x20 # (DW_AT_inline)
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.uleb128 0xb # (DW_FORM_data1)
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.uleb128 0x1 # (DW_AT_sibling)
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.uleb128 0x13 # (DW_FORM_ref4)
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.byte 0
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.byte 0
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.uleb128 0x3 # (abbrev code)
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.uleb128 0x5 # (TAG: DW_TAG_formal_parameter)
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.byte 0 # DW_children_no
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.uleb128 0x3 # (DW_AT_name)
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.uleb128 0x8 # (DW_FORM_string)
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.uleb128 0x3a # (DW_AT_decl_file)
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.uleb128 0xb # (DW_FORM_data1)
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.uleb128 0x3b # (DW_AT_decl_line)
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.uleb128 0xb # (DW_FORM_data1)
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.uleb128 0x49 # (DW_AT_type)
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.uleb128 0x13 # (DW_FORM_ref4)
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.byte 0
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.byte 0
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.uleb128 0x4 # (abbrev code)
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.uleb128 0x24 # (TAG: DW_TAG_base_type)
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.byte 0 # DW_children_no
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.uleb128 0xb # (DW_AT_byte_size)
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.uleb128 0xb # (DW_FORM_data1)
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.uleb128 0x3e # (DW_AT_encoding)
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.uleb128 0xb # (DW_FORM_data1)
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.uleb128 0x3 # (DW_AT_name)
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.uleb128 0x8 # (DW_FORM_string)
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.byte 0
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.byte 0
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.uleb128 0x5 # (abbrev code)
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.uleb128 0x2e # (TAG: DW_TAG_subprogram)
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.byte 0x1 # DW_children_yes
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.uleb128 0x3f # (DW_AT_external)
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.uleb128 0x19 # (DW_FORM_flag_present)
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.uleb128 0x3 # (DW_AT_name)
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.uleb128 0xe # (DW_FORM_strp)
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.uleb128 0x3a # (DW_AT_decl_file)
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.uleb128 0xb # (DW_FORM_data1)
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.uleb128 0x3b # (DW_AT_decl_line)
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.uleb128 0xb # (DW_FORM_data1)
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.uleb128 0x49 # (DW_AT_type)
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.uleb128 0x13 # (DW_FORM_ref4)
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.uleb128 0x11 # (DW_AT_low_pc)
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.uleb128 0x1 # (DW_FORM_addr)
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.uleb128 0x12 # (DW_AT_high_pc)
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.uleb128 0x7 # (DW_FORM_data8)
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.uleb128 0x40 # (DW_AT_frame_base)
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.uleb128 0x18 # (DW_FORM_exprloc)
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.uleb128 0x2117 # (DW_AT_GNU_all_call_sites)
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.uleb128 0x19 # (DW_FORM_flag_present)
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.uleb128 0x1 # (DW_AT_sibling)
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.uleb128 0x13 # (DW_FORM_ref4)
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.byte 0
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.byte 0
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.uleb128 0x6 # (abbrev code)
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.uleb128 0x1d # (TAG: DW_TAG_inlined_subroutine)
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.byte 0x1 # DW_children_yes
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.uleb128 0x31 # (DW_AT_abstract_origin)
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.uleb128 0x13 # (DW_FORM_ref4)
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.uleb128 0x52 # (DW_AT_entry_pc)
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.uleb128 0x1 # (DW_FORM_addr)
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.uleb128 0x55 # (DW_AT_ranges)
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.uleb128 0x17 # (DW_FORM_sec_offset)
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.uleb128 0x58 # (DW_AT_call_file)
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.uleb128 0xb # (DW_FORM_data1)
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.uleb128 0x59 # (DW_AT_call_line)
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.uleb128 0xb # (DW_FORM_data1)
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.byte 0
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.byte 0
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.uleb128 0x7 # (abbrev code)
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.uleb128 0x5 # (TAG: DW_TAG_formal_parameter)
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.byte 0 # DW_children_no
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.uleb128 0x31 # (DW_AT_abstract_origin)
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.uleb128 0x13 # (DW_FORM_ref4)
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.uleb128 0x2 # (DW_AT_location)
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.uleb128 0x17 # (DW_FORM_sec_offset)
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.byte 0
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.byte 0
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.uleb128 0x8 # (abbrev code)
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.uleb128 0x34 # (TAG: DW_TAG_variable)
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.byte 0 # DW_children_no
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.uleb128 0x3 # (DW_AT_name)
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.uleb128 0x8 # (DW_FORM_string)
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.uleb128 0x3a # (DW_AT_decl_file)
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.uleb128 0xb # (DW_FORM_data1)
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.uleb128 0x3b # (DW_AT_decl_line)
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.uleb128 0xb # (DW_FORM_data1)
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.uleb128 0x49 # (DW_AT_type)
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.uleb128 0x13 # (DW_FORM_ref4)
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.uleb128 0x3f # (DW_AT_external)
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.uleb128 0x19 # (DW_FORM_flag_present)
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.uleb128 0x2 # (DW_AT_location)
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.uleb128 0x18 # (DW_FORM_exprloc)
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.byte 0
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.byte 0
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.uleb128 0x9 # (abbrev code)
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.uleb128 0x35 # (TAG: DW_TAG_volatile_type)
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.byte 0 # DW_children_no
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.uleb128 0x49 # (DW_AT_type)
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.uleb128 0x13 # (DW_FORM_ref4)
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.byte 0
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.byte 0
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.byte 0
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.section .debug_loc,"",@progbits
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.Ldebug_loc0:
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.LLST0:
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.quad .LVL0 # Location list begin address (*.LLST0)
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.quad .LVL1 # Location list end address (*.LLST0)
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.value 0x1 # Location expression size
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.byte 0x50 # DW_OP_reg0
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.quad .LVL1 # Location list begin address (*.LLST0)
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.quad .LVL2 # Location list end address (*.LLST0)
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.value 0x3 # Location expression size
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.byte 0x71 # DW_OP_breg1
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.sleb128 -10
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.byte 0x9f # DW_OP_stack_value
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.quad .LVL3 # Location list begin address (*.LLST0)
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.quad .LVL4 # Location list end address (*.LLST0)
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.value 0x1 # Location expression size
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.byte 0x50 # DW_OP_reg0
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.quad 0 # Location list terminator begin (*.LLST0)
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.quad 0 # Location list terminator end (*.LLST0)
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.section .debug_aranges,"",@progbits
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.long 0x2c # Length of Address Ranges Info
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.value 0x2 # DWARF Version
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.long .Ldebug_info0 # Offset of Compilation Unit Info
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.byte 0x8 # Size of Address
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.byte 0 # Size of Segment Descriptor
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.value 0 # Pad to 16 byte boundary
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.value 0
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.quad .LFB1 # Address
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.quad .LFE1-.LFB1 # Length
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.quad 0
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.quad 0
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.section .debug_ranges,"",@progbits
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.Ldebug_ranges0:
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.quad .LBB4 # Offset 0
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.quad .LBE4
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.quad .LBB7
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.quad .LBE7
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.quad 0
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.quad 0
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.quad .LFB1 # Offset 0x30
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.quad .LFE1
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.quad 0
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.quad 0
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.section .debug_line,"",@progbits
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.Ldebug_line0:
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.section .debug_str,"MS",@progbits,1
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.LASF2:
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.string "/main/disassemble3/gdb/testsuite/gdb.base"
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.LASF1:
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.string "disasm-optim.c"
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.LASF3:
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.string "main"
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.LASF0:
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.string "GNU C 4.9.2 20150212 (Red Hat 4.9.2-6) -mtune=generic -march=x86-64 -g -O2"
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.ident "GCC: (GNU) 4.9.2 20150212 (Red Hat 4.9.2-6)"
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.section .note.GNU-stack,"",@progbits
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