gdb/testsuite/gdb.base/disasm-optim.S

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright (C) 2015-2023 Free Software Foundation, Inc.
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 3 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17
  18    This file was created with gcc -O2 -g -S -fverbose-asm -dA disasm-optim.c
  19    and then cleaning up the output.  */
  20
  21         .file   "disasm-optim.c"
  22
  23         .text
  24         .p2align 4,,15
  25         .globl  main
  26         .type   main, @function
  27 main:
  28 .LFB1:
  29         .file 1 "disasm-optim.c"
  30         # disasm-optim.c:24
  31         .loc 1 24 0
  32         .cfi_startproc
  33         # disasm-optim.c:25
  34         .loc 1 25 0
  35         movl    y(%rip), %eax
  36 .LVL0:
  37 .LBB4:
  38 .LBB5:
  39         .file 2 "disasm-optim.h"
  40         # disasm-optim.h:21
  41         .loc 2 21 0
  42         testl   %eax, %eax
  43         js      .L6
  44         # disasm-optim.h:25
  45         .loc 2 25 0
  46         leal    10(%rax), %edx
  47         testl   %eax, %eax
  48         movl    $1, %eax
  49 .LVL1:
  50         cmovne  %edx, %eax
  51 .LVL2:
  52 .L3:
  53 .LBE5:
  54 .LBE4:
  55         # disasm-optim.c:25
  56         .loc 1 25 0
  57         movl    %eax, x(%rip)
  58         # disasm-optim.c:27
  59         .loc 1 27 0
  60         xorl    %eax, %eax
  61         ret
  62 .LVL3:
  63 .L6:
  64 .LBB7:
  65 .LBB6:
  66         # disasm-optim.h:22
  67         .loc 2 22 0
  68         addl    %eax, %eax
  69 .LVL4:
  70         jmp     .L3
  71 .LBE6:
  72 .LBE7:
  73         .cfi_endproc
  74 .LFE1:
  75         .size   main, .-main
  76         .comm   y,4,4
  77         .comm   x,4,4
  78         .text
  79 .Letext0:
  80         .section        .debug_info,"",@progbits
  81 .Ldebug_info0:
  82         .long   0xb1    # Length of Compilation Unit Info
  83         .value  0x4     # DWARF version number
  84         .long   .Ldebug_abbrev0 # Offset Into Abbrev. Section
  85         .byte   0x8     # Pointer Size (in bytes)
  86         .uleb128 0x1    # (DIE (0xb) DW_TAG_compile_unit)
  87         .long   .LASF0  # DW_AT_producer: "GNU C 4.9.2 20150212 (Red Hat 4.9.2-6) -mtune=generic -march=x86-64 -g -O2"
  88         .byte   0x1     # DW_AT_language
  89         .long   .LASF1  # DW_AT_name: "disasm-optim.c"
  90         .long   .LASF2  # DW_AT_comp_dir: "/main/disassemble3/gdb/testsuite/gdb.base"
  91         .long   .Ldebug_ranges0+0x30    # DW_AT_ranges
  92         .quad   0       # DW_AT_low_pc
  93         .long   .Ldebug_line0   # DW_AT_stmt_list
  94         .uleb128 0x2    # (DIE (0x29) DW_TAG_subprogram)
  95                         # DW_AT_external
  96         .ascii "foo\0"  # DW_AT_name
  97         .byte   0x2     # DW_AT_decl_file (disasm-optim.h)
  98         .byte   0x13    # DW_AT_decl_line
  99                         # DW_AT_prototyped
 100         .long   0x43    # DW_AT_type
 101         .byte   0x3     # DW_AT_inline
 102         .long   0x43    # DW_AT_sibling
 103         .uleb128 0x3    # (DIE (0x39) DW_TAG_formal_parameter)
 104         .ascii "a\0"    # DW_AT_name
 105         .byte   0x2     # DW_AT_decl_file (disasm-optim.h)
 106         .byte   0x13    # DW_AT_decl_line
 107         .long   0x43    # DW_AT_type
 108         .byte   0       # end of children of DIE 0x29
 109         .uleb128 0x4    # (DIE (0x43) DW_TAG_base_type)
 110         .byte   0x4     # DW_AT_byte_size
 111         .byte   0x5     # DW_AT_encoding
 112         .ascii "int\0"  # DW_AT_name
 113         .uleb128 0x5    # (DIE (0x4a) DW_TAG_subprogram)
 114                         # DW_AT_external
 115         .long   .LASF3  # DW_AT_name: "main"
 116         .byte   0x1     # DW_AT_decl_file (disasm-optim.c)
 117         .byte   0x17    # DW_AT_decl_line
 118         .long   0x43    # DW_AT_type
 119         .quad   .LFB1   # DW_AT_low_pc
 120         .quad   .LFE1-.LFB1     # DW_AT_high_pc
 121         .uleb128 0x1    # DW_AT_frame_base
 122         .byte   0x9c    # DW_OP_call_frame_cfa
 123                         # DW_AT_GNU_all_call_sites
 124         .long   0x89    # DW_AT_sibling
 125         .uleb128 0x6    # (DIE (0x6b) DW_TAG_inlined_subroutine)
 126         .long   0x29    # DW_AT_abstract_origin
 127         .quad   .LBB4   # DW_AT_entry_pc
 128         .long   .Ldebug_ranges0+0       # DW_AT_ranges
 129         .byte   0x1     # DW_AT_call_file (disasm-optim.c)
 130         .byte   0x19    # DW_AT_call_line
 131         .uleb128 0x7    # (DIE (0x7e) DW_TAG_formal_parameter)
 132         .long   0x39    # DW_AT_abstract_origin
 133         .long   .LLST0  # DW_AT_location
 134         .byte   0       # end of children of DIE 0x6b
 135         .byte   0       # end of children of DIE 0x4a
 136         .uleb128 0x8    # (DIE (0x89) DW_TAG_variable)
 137         .ascii "x\0"    # DW_AT_name
 138         .byte   0x1     # DW_AT_decl_file (disasm-optim.c)
 139         .byte   0x14    # DW_AT_decl_line
 140         .long   0x9c    # DW_AT_type
 141                         # DW_AT_external
 142         .uleb128 0x9    # DW_AT_location
 143         .byte   0x3     # DW_OP_addr
 144         .quad   x
 145         .uleb128 0x9    # (DIE (0x9c) DW_TAG_volatile_type)
 146         .long   0x43    # DW_AT_type
 147         .uleb128 0x8    # (DIE (0xa1) DW_TAG_variable)
 148         .ascii "y\0"    # DW_AT_name
 149         .byte   0x1     # DW_AT_decl_file (disasm-optim.c)
 150         .byte   0x14    # DW_AT_decl_line
 151         .long   0x9c    # DW_AT_type
 152                         # DW_AT_external
 153         .uleb128 0x9    # DW_AT_location
 154         .byte   0x3     # DW_OP_addr
 155         .quad   y
 156         .byte   0       # end of children of DIE 0xb
 157         .section        .debug_abbrev,"",@progbits
 158 .Ldebug_abbrev0:
 159         .uleb128 0x1    # (abbrev code)
 160         .uleb128 0x11   # (TAG: DW_TAG_compile_unit)
 161         .byte   0x1     # DW_children_yes
 162         .uleb128 0x25   # (DW_AT_producer)
 163         .uleb128 0xe    # (DW_FORM_strp)
 164         .uleb128 0x13   # (DW_AT_language)
 165         .uleb128 0xb    # (DW_FORM_data1)
 166         .uleb128 0x3    # (DW_AT_name)
 167         .uleb128 0xe    # (DW_FORM_strp)
 168         .uleb128 0x1b   # (DW_AT_comp_dir)
 169         .uleb128 0xe    # (DW_FORM_strp)
 170         .uleb128 0x55   # (DW_AT_ranges)
 171         .uleb128 0x17   # (DW_FORM_sec_offset)
 172         .uleb128 0x11   # (DW_AT_low_pc)
 173         .uleb128 0x1    # (DW_FORM_addr)
 174         .uleb128 0x10   # (DW_AT_stmt_list)
 175         .uleb128 0x17   # (DW_FORM_sec_offset)
 176         .byte   0
 177         .byte   0
 178         .uleb128 0x2    # (abbrev code)
 179         .uleb128 0x2e   # (TAG: DW_TAG_subprogram)
 180         .byte   0x1     # DW_children_yes
 181         .uleb128 0x3f   # (DW_AT_external)
 182         .uleb128 0x19   # (DW_FORM_flag_present)
 183         .uleb128 0x3    # (DW_AT_name)
 184         .uleb128 0x8    # (DW_FORM_string)
 185         .uleb128 0x3a   # (DW_AT_decl_file)
 186         .uleb128 0xb    # (DW_FORM_data1)
 187         .uleb128 0x3b   # (DW_AT_decl_line)
 188         .uleb128 0xb    # (DW_FORM_data1)
 189         .uleb128 0x27   # (DW_AT_prototyped)
 190         .uleb128 0x19   # (DW_FORM_flag_present)
 191         .uleb128 0x49   # (DW_AT_type)
 192         .uleb128 0x13   # (DW_FORM_ref4)
 193         .uleb128 0x20   # (DW_AT_inline)
 194         .uleb128 0xb    # (DW_FORM_data1)
 195         .uleb128 0x1    # (DW_AT_sibling)
 196         .uleb128 0x13   # (DW_FORM_ref4)
 197         .byte   0
 198         .byte   0
 199         .uleb128 0x3    # (abbrev code)
 200         .uleb128 0x5    # (TAG: DW_TAG_formal_parameter)
 201         .byte   0       # DW_children_no
 202         .uleb128 0x3    # (DW_AT_name)
 203         .uleb128 0x8    # (DW_FORM_string)
 204         .uleb128 0x3a   # (DW_AT_decl_file)
 205         .uleb128 0xb    # (DW_FORM_data1)
 206         .uleb128 0x3b   # (DW_AT_decl_line)
 207         .uleb128 0xb    # (DW_FORM_data1)
 208         .uleb128 0x49   # (DW_AT_type)
 209         .uleb128 0x13   # (DW_FORM_ref4)
 210         .byte   0
 211         .byte   0
 212         .uleb128 0x4    # (abbrev code)
 213         .uleb128 0x24   # (TAG: DW_TAG_base_type)
 214         .byte   0       # DW_children_no
 215         .uleb128 0xb    # (DW_AT_byte_size)
 216         .uleb128 0xb    # (DW_FORM_data1)
 217         .uleb128 0x3e   # (DW_AT_encoding)
 218         .uleb128 0xb    # (DW_FORM_data1)
 219         .uleb128 0x3    # (DW_AT_name)
 220         .uleb128 0x8    # (DW_FORM_string)
 221         .byte   0
 222         .byte   0
 223         .uleb128 0x5    # (abbrev code)
 224         .uleb128 0x2e   # (TAG: DW_TAG_subprogram)
 225         .byte   0x1     # DW_children_yes
 226         .uleb128 0x3f   # (DW_AT_external)
 227         .uleb128 0x19   # (DW_FORM_flag_present)
 228         .uleb128 0x3    # (DW_AT_name)
 229         .uleb128 0xe    # (DW_FORM_strp)
 230         .uleb128 0x3a   # (DW_AT_decl_file)
 231         .uleb128 0xb    # (DW_FORM_data1)
 232         .uleb128 0x3b   # (DW_AT_decl_line)
 233         .uleb128 0xb    # (DW_FORM_data1)
 234         .uleb128 0x49   # (DW_AT_type)
 235         .uleb128 0x13   # (DW_FORM_ref4)
 236         .uleb128 0x11   # (DW_AT_low_pc)
 237         .uleb128 0x1    # (DW_FORM_addr)
 238         .uleb128 0x12   # (DW_AT_high_pc)
 239         .uleb128 0x7    # (DW_FORM_data8)
 240         .uleb128 0x40   # (DW_AT_frame_base)
 241         .uleb128 0x18   # (DW_FORM_exprloc)
 242         .uleb128 0x2117 # (DW_AT_GNU_all_call_sites)
 243         .uleb128 0x19   # (DW_FORM_flag_present)
 244         .uleb128 0x1    # (DW_AT_sibling)
 245         .uleb128 0x13   # (DW_FORM_ref4)
 246         .byte   0
 247         .byte   0
 248         .uleb128 0x6    # (abbrev code)
 249         .uleb128 0x1d   # (TAG: DW_TAG_inlined_subroutine)
 250         .byte   0x1     # DW_children_yes
 251         .uleb128 0x31   # (DW_AT_abstract_origin)
 252         .uleb128 0x13   # (DW_FORM_ref4)
 253         .uleb128 0x52   # (DW_AT_entry_pc)
 254         .uleb128 0x1    # (DW_FORM_addr)
 255         .uleb128 0x55   # (DW_AT_ranges)
 256         .uleb128 0x17   # (DW_FORM_sec_offset)
 257         .uleb128 0x58   # (DW_AT_call_file)
 258         .uleb128 0xb    # (DW_FORM_data1)
 259         .uleb128 0x59   # (DW_AT_call_line)
 260         .uleb128 0xb    # (DW_FORM_data1)
 261         .byte   0
 262         .byte   0
 263         .uleb128 0x7    # (abbrev code)
 264         .uleb128 0x5    # (TAG: DW_TAG_formal_parameter)
 265         .byte   0       # DW_children_no
 266         .uleb128 0x31   # (DW_AT_abstract_origin)
 267         .uleb128 0x13   # (DW_FORM_ref4)
 268         .uleb128 0x2    # (DW_AT_location)
 269         .uleb128 0x17   # (DW_FORM_sec_offset)
 270         .byte   0
 271         .byte   0
 272         .uleb128 0x8    # (abbrev code)
 273         .uleb128 0x34   # (TAG: DW_TAG_variable)
 274         .byte   0       # DW_children_no
 275         .uleb128 0x3    # (DW_AT_name)
 276         .uleb128 0x8    # (DW_FORM_string)
 277         .uleb128 0x3a   # (DW_AT_decl_file)
 278         .uleb128 0xb    # (DW_FORM_data1)
 279         .uleb128 0x3b   # (DW_AT_decl_line)
 280         .uleb128 0xb    # (DW_FORM_data1)
 281         .uleb128 0x49   # (DW_AT_type)
 282         .uleb128 0x13   # (DW_FORM_ref4)
 283         .uleb128 0x3f   # (DW_AT_external)
 284         .uleb128 0x19   # (DW_FORM_flag_present)
 285         .uleb128 0x2    # (DW_AT_location)
 286         .uleb128 0x18   # (DW_FORM_exprloc)
 287         .byte   0
 288         .byte   0
 289         .uleb128 0x9    # (abbrev code)
 290         .uleb128 0x35   # (TAG: DW_TAG_volatile_type)
 291         .byte   0       # DW_children_no
 292         .uleb128 0x49   # (DW_AT_type)
 293         .uleb128 0x13   # (DW_FORM_ref4)
 294         .byte   0
 295         .byte   0
 296         .byte   0
 297         .section        .debug_loc,"",@progbits
 298 .Ldebug_loc0:
 299 .LLST0:
 300         .quad   .LVL0   # Location list begin address (*.LLST0)
 301         .quad   .LVL1   # Location list end address (*.LLST0)
 302         .value  0x1     # Location expression size
 303         .byte   0x50    # DW_OP_reg0
 304         .quad   .LVL1   # Location list begin address (*.LLST0)
 305         .quad   .LVL2   # Location list end address (*.LLST0)
 306         .value  0x3     # Location expression size
 307         .byte   0x71    # DW_OP_breg1
 308         .sleb128 -10
 309         .byte   0x9f    # DW_OP_stack_value
 310         .quad   .LVL3   # Location list begin address (*.LLST0)
 311         .quad   .LVL4   # Location list end address (*.LLST0)
 312         .value  0x1     # Location expression size
 313         .byte   0x50    # DW_OP_reg0
 314         .quad   0       # Location list terminator begin (*.LLST0)
 315         .quad   0       # Location list terminator end (*.LLST0)
 316         .section        .debug_aranges,"",@progbits
 317         .long   0x2c    # Length of Address Ranges Info
 318         .value  0x2     # DWARF Version
 319         .long   .Ldebug_info0   # Offset of Compilation Unit Info
 320         .byte   0x8     # Size of Address
 321         .byte   0       # Size of Segment Descriptor
 322         .value  0       # Pad to 16 byte boundary
 323         .value  0
 324         .quad   .LFB1   # Address
 325         .quad   .LFE1-.LFB1     # Length
 326         .quad   0
 327         .quad   0
 328         .section        .debug_ranges,"",@progbits
 329 .Ldebug_ranges0:
 330         .quad   .LBB4   # Offset 0
 331         .quad   .LBE4
 332         .quad   .LBB7
 333         .quad   .LBE7
 334         .quad   0
 335         .quad   0
 336         .quad   .LFB1   # Offset 0x30
 337         .quad   .LFE1
 338         .quad   0
 339         .quad   0
 340         .section        .debug_line,"",@progbits
 341 .Ldebug_line0:
 342         .section        .debug_str,"MS",@progbits,1
 343 .LASF2:
 344         .string "/main/disassemble3/gdb/testsuite/gdb.base"
 345 .LASF1:
 346         .string "disasm-optim.c"
 347 .LASF3:
 348         .string "main"
 349 .LASF0:
 350         .string "GNU C 4.9.2 20150212 (Red Hat 4.9.2-6) -mtune=generic -march=x86-64 -g -O2"
 351         .ident  "GCC: (GNU) 4.9.2 20150212 (Red Hat 4.9.2-6)"
 352         .section        .note.GNU-stack,"",@progbits