1// RUN: llvm-mc %s -defsym ALIGN_4=1 -save-temp-labels -filetype obj -triple arm-none-eabi -o %t.o 2// RUN: llvm-nm %t.o | FileCheck %s --check-prefix=L4 3// RUN: llvm-dwarfdump -debug-line %t.o 2>&1 | FileCheck %s --implicit-check-not='warning:' --check-prefix=MULT4 4 5// RUN: llvm-mc %s -defsym ALIGN_8=1 -save-temp-labels -filetype obj -triple arm-none-eabi -o %t.o 6// RUN: llvm-nm %t.o | FileCheck %s --check-prefix=L8 7// RUN: llvm-dwarfdump -debug-line %t.o 2>&1 | FileCheck %s --implicit-check-not='warning:' --check-prefix=MULT8 8 9// RUN: llvm-mc %s -defsym UNALIGNED_PADDING=1 -save-temp-labels -filetype obj -triple arm-none-eabi -o %t.o 10// RUN: llvm-nm %t.o | FileCheck %s --check-prefix=LUNALIGN 11// RUN: llvm-dwarfdump -debug-line %t.o 2>&1 | FileCheck %s --check-prefix=UNALIGN 12 13/// This test is based on a real example from ARM C/C++ Compiler. 14/// It verifies llvm-dwarfdump is able to dump line tables even if they've been 15/// placed at aligned offsets. 16 17// L4: 0000002b N .Ltable0_end 18// MULT4: Address Line Column File ISA Discriminator OpIndex Flags 19// MULT4-NEXT: ------------------ ------ ------ ------ --- ------------- ------- ------------- 20// MULT4-NEXT: 0x0000000000000000 1 0 1 0 0 0 is_stmt end_sequence 21// MULT4-EMPTY: 22// MULT4-NEXT: debug_line[0x0000002c] 23// MULT4-NEXT: Line table prologue: 24// MULT4-NEXT: total_length: 0x0000003a{{$}} 25// MULT4-NEXT: format: DWARF32 26// MULT4-NEXT: version: 2{{$}} 27// MULT4-NEXT: prologue_length: 0x0000001a 28// MULT4-NEXT: min_inst_length: 2 29// MULT4-NEXT: default_is_stmt: 1 30 31// L8: 00000027 N .Ltable0_end 32// MULT8: Address Line Column File ISA Discriminator OpIndex Flags 33// MULT8-NEXT: ------------------ ------ ------ ------ --- ------------- ------- ------------- 34// MULT8-NEXT: 0x0000000000000000 1 0 1 0 0 0 is_stmt end_sequence 35// MULT8-EMPTY: 36// MULT8-NEXT: debug_line[0x00000028] 37// MULT8-NEXT: Line table prologue: 38// MULT8-NEXT: total_length: 0x0000003a{{$}} 39// MULT8-NEXT: format: DWARF32 40// MULT8-NEXT: version: 2{{$}} 41// MULT8-NEXT: prologue_length: 0x0000001a 42// MULT8-NEXT: min_inst_length: 2 43// MULT8-NEXT: default_is_stmt: 1 44 45/// This should fail to dump: 46// LUNALIGN: 00000027 N .Ltable0_end 47// UNALIGN: warning: parsing line table prologue at offset 0x00000027: unsupported version 48 49.section .debug_line 50/// First line table 51/// Unit total length: 52.long .Ltable0_end - .Ltable0_start 53.Ltable0_start: 54.short 2 /// Version 55/// Header length: 56.long .Ltable0_header_end - .Ltable0_header_start 57.Ltable0_header_start: 58.byte 4 /// Min instruction length 59.byte 1 /// Max operations per instruction 60.byte 0 /// Default is statement 61.byte 6 /// Line range 62.byte 10 /// Opcode base 63.byte 0 /// standard_opcode_lengths[DW_LNS_copy] = 0 64.byte 1 /// standard_opcode_lengths[DW_LNS_advance_pc] = 1 65.byte 1 /// standard_opcode_lengths[DW_LNS_advance_line] = 1 66.byte 1 /// standard_opcode_lengths[DW_LNS_set_file] = 1 67.byte 1 /// standard_opcode_lengths[DW_LNS_set_column] = 1 68.byte 0 /// standard_opcode_lengths[DW_LNS_negate_stmt] = 0 69.byte 0 /// standard_opcode_lengths[DW_LNS_set_basic_block] = 0 70.byte 0 /// standard_opcode_lengths[DW_LNS_const_add_pc] = 0 71.byte 0 /// standard_opcode_lengths[DW_LNS_fixed_advance_pc] = 0 72.byte 0 /// No include directories 73/// File name: 74.ifdef ALIGN_4 75/// Pad out filename so next 4 byte aligned offset is a multiple of 4 and not 8. 76.asciz "foobar.cpp" 77.else 78.asciz "test.c" 79.endif 80.byte 0 /// Dir idx 81.byte 0 /// Mod time 82.byte 0 /// Length 83.byte 0 /// End files 84.Ltable0_header_end: 85/// Line table operations 86.byte 0 /// Extended opcode 87.byte 1 /// Length 1 88.byte 1 /// DW_LNE_end_sequence 89.Ltable0_end: 90/// End first line table 91/// Padding: 92.ifdef UNALIGNED_PADDING 93.short 0 94.else 95.byte 0 96.endif 97/// Second line table 98/// Unit total length: 99.long .Ltable1_end - .Ltable1_start 100.Ltable1_start: 101.short 2 /// Version 102/// Header length: 103.long .Ltable1_header_end - .Ltable1_header_start 104.Ltable1_header_start: 105.byte 2 /// Min instruction length 106.byte 1 /// Max operations per instruction 107.byte 0 /// Default is statement 108.byte 6 /// Line range 109.byte 10 /// Opcode base 110.byte 0 /// standard_opcode_lengths[DW_LNS_copy] = 0 111.byte 1 /// standard_opcode_lengths[DW_LNS_advance_pc] = 1 112.byte 1 /// standard_opcode_lengths[DW_LNS_advance_line] = 1 113.byte 1 /// standard_opcode_lengths[DW_LNS_set_file] = 1 114.byte 1 /// standard_opcode_lengths[DW_LNS_set_column] = 1 115.byte 0 /// standard_opcode_lengths[DW_LNS_negate_stmt] = 0 116.byte 0 /// standard_opcode_lengths[DW_LNS_set_basic_block] = 0 117.byte 0 /// standard_opcode_lengths[DW_LNS_const_add_pc] = 0 118.byte 0 /// standard_opcode_lengths[DW_LNS_fixed_advance_pc] = 0 119.byte 0 /// No include directories 120.asciz "test.c" /// File name 121.byte 0 /// Dir idx 122.byte 0 /// Mod time 123.byte 0 /// Length 124.byte 0 /// End files 125.Ltable1_header_end: 126/// Line table operations 127.byte 4 /// DW_LNS_set_file 128.byte 1 /// File 1 129.byte 5 /// DW_LNS_set_column 130.byte 1 /// Column 1 131.byte 0 /// Extended opcode 132.byte 5 /// Length 5 133.byte 2 /// DW_LNE_set_address 134.long 32896 /// Address = 0x00008080 135.byte 3 /// DW_LNS_advance_line 136.byte 6 /// Line += 6 137.byte 1 /// DW_LNS_copy 138.byte 5 /// DW_LNS_set_column 139.byte 2 /// Column 2 140.byte 12 /// Special opcode (address += 0, line += 2) 141.byte 30 /// Special opcode (address += 6, line += 2) 142.byte 5 /// DW_LNS_set_column 143.byte 1 /// Column 1 144.byte 17 /// Special opcode (address += 2, line += 1) 145.byte 2 /// DW_LNS_advance_pc 146.byte 4 /// += (4 * min instruction length) 147.byte 0 /// Extended opcode 148.byte 1 /// Length 1 149.byte 1 /// DW_LNE_end_sequence 150.Ltable1_end: 151/// End second line table 152.short 0 /// Padding (to make section a word multiple) 153