// RUN: llvm-mc %s -defsym ALIGN_4=1 -save-temp-labels -filetype obj -triple arm-none-eabi -o %t.o // RUN: llvm-nm %t.o | FileCheck %s --check-prefix=L4 // RUN: llvm-dwarfdump -debug-line %t.o 2>&1 | FileCheck %s --implicit-check-not='warning:' --check-prefix=MULT4 // RUN: llvm-mc %s -defsym ALIGN_8=1 -save-temp-labels -filetype obj -triple arm-none-eabi -o %t.o // RUN: llvm-nm %t.o | FileCheck %s --check-prefix=L8 // RUN: llvm-dwarfdump -debug-line %t.o 2>&1 | FileCheck %s --implicit-check-not='warning:' --check-prefix=MULT8 // RUN: llvm-mc %s -defsym UNALIGNED_PADDING=1 -save-temp-labels -filetype obj -triple arm-none-eabi -o %t.o // RUN: llvm-nm %t.o | FileCheck %s --check-prefix=LUNALIGN // RUN: llvm-dwarfdump -debug-line %t.o 2>&1 | FileCheck %s --check-prefix=UNALIGN /// This test is based on a real example from ARM C/C++ Compiler. /// It verifies llvm-dwarfdump is able to dump line tables even if they've been /// placed at aligned offsets. // L4: 0000002b N .Ltable0_end // MULT4: Address Line Column File ISA Discriminator OpIndex Flags // MULT4-NEXT: ------------------ ------ ------ ------ --- ------------- ------- ------------- // MULT4-NEXT: 0x0000000000000000 1 0 1 0 0 0 is_stmt end_sequence // MULT4-EMPTY: // MULT4-NEXT: debug_line[0x0000002c] // MULT4-NEXT: Line table prologue: // MULT4-NEXT: total_length: 0x0000003a{{$}} // MULT4-NEXT: format: DWARF32 // MULT4-NEXT: version: 2{{$}} // MULT4-NEXT: prologue_length: 0x0000001a // MULT4-NEXT: min_inst_length: 2 // MULT4-NEXT: default_is_stmt: 1 // L8: 00000027 N .Ltable0_end // MULT8: Address Line Column File ISA Discriminator OpIndex Flags // MULT8-NEXT: ------------------ ------ ------ ------ --- ------------- ------- ------------- // MULT8-NEXT: 0x0000000000000000 1 0 1 0 0 0 is_stmt end_sequence // MULT8-EMPTY: // MULT8-NEXT: debug_line[0x00000028] // MULT8-NEXT: Line table prologue: // MULT8-NEXT: total_length: 0x0000003a{{$}} // MULT8-NEXT: format: DWARF32 // MULT8-NEXT: version: 2{{$}} // MULT8-NEXT: prologue_length: 0x0000001a // MULT8-NEXT: min_inst_length: 2 // MULT8-NEXT: default_is_stmt: 1 /// This should fail to dump: // LUNALIGN: 00000027 N .Ltable0_end // UNALIGN: warning: parsing line table prologue at offset 0x00000027: unsupported version .section .debug_line /// First line table /// Unit total length: .long .Ltable0_end - .Ltable0_start .Ltable0_start: .short 2 /// Version /// Header length: .long .Ltable0_header_end - .Ltable0_header_start .Ltable0_header_start: .byte 4 /// Min instruction length .byte 1 /// Max operations per instruction .byte 0 /// Default is statement .byte 6 /// Line range .byte 10 /// Opcode base .byte 0 /// standard_opcode_lengths[DW_LNS_copy] = 0 .byte 1 /// standard_opcode_lengths[DW_LNS_advance_pc] = 1 .byte 1 /// standard_opcode_lengths[DW_LNS_advance_line] = 1 .byte 1 /// standard_opcode_lengths[DW_LNS_set_file] = 1 .byte 1 /// standard_opcode_lengths[DW_LNS_set_column] = 1 .byte 0 /// standard_opcode_lengths[DW_LNS_negate_stmt] = 0 .byte 0 /// standard_opcode_lengths[DW_LNS_set_basic_block] = 0 .byte 0 /// standard_opcode_lengths[DW_LNS_const_add_pc] = 0 .byte 0 /// standard_opcode_lengths[DW_LNS_fixed_advance_pc] = 0 .byte 0 /// No include directories /// File name: .ifdef ALIGN_4 /// Pad out filename so next 4 byte aligned offset is a multiple of 4 and not 8. .asciz "foobar.cpp" .else .asciz "test.c" .endif .byte 0 /// Dir idx .byte 0 /// Mod time .byte 0 /// Length .byte 0 /// End files .Ltable0_header_end: /// Line table operations .byte 0 /// Extended opcode .byte 1 /// Length 1 .byte 1 /// DW_LNE_end_sequence .Ltable0_end: /// End first line table /// Padding: .ifdef UNALIGNED_PADDING .short 0 .else .byte 0 .endif /// Second line table /// Unit total length: .long .Ltable1_end - .Ltable1_start .Ltable1_start: .short 2 /// Version /// Header length: .long .Ltable1_header_end - .Ltable1_header_start .Ltable1_header_start: .byte 2 /// Min instruction length .byte 1 /// Max operations per instruction .byte 0 /// Default is statement .byte 6 /// Line range .byte 10 /// Opcode base .byte 0 /// standard_opcode_lengths[DW_LNS_copy] = 0 .byte 1 /// standard_opcode_lengths[DW_LNS_advance_pc] = 1 .byte 1 /// standard_opcode_lengths[DW_LNS_advance_line] = 1 .byte 1 /// standard_opcode_lengths[DW_LNS_set_file] = 1 .byte 1 /// standard_opcode_lengths[DW_LNS_set_column] = 1 .byte 0 /// standard_opcode_lengths[DW_LNS_negate_stmt] = 0 .byte 0 /// standard_opcode_lengths[DW_LNS_set_basic_block] = 0 .byte 0 /// standard_opcode_lengths[DW_LNS_const_add_pc] = 0 .byte 0 /// standard_opcode_lengths[DW_LNS_fixed_advance_pc] = 0 .byte 0 /// No include directories .asciz "test.c" /// File name .byte 0 /// Dir idx .byte 0 /// Mod time .byte 0 /// Length .byte 0 /// End files .Ltable1_header_end: /// Line table operations .byte 4 /// DW_LNS_set_file .byte 1 /// File 1 .byte 5 /// DW_LNS_set_column .byte 1 /// Column 1 .byte 0 /// Extended opcode .byte 5 /// Length 5 .byte 2 /// DW_LNE_set_address .long 32896 /// Address = 0x00008080 .byte 3 /// DW_LNS_advance_line .byte 6 /// Line += 6 .byte 1 /// DW_LNS_copy .byte 5 /// DW_LNS_set_column .byte 2 /// Column 2 .byte 12 /// Special opcode (address += 0, line += 2) .byte 30 /// Special opcode (address += 6, line += 2) .byte 5 /// DW_LNS_set_column .byte 1 /// Column 1 .byte 17 /// Special opcode (address += 2, line += 1) .byte 2 /// DW_LNS_advance_pc .byte 4 /// += (4 * min instruction length) .byte 0 /// Extended opcode .byte 1 /// Length 1 .byte 1 /// DW_LNE_end_sequence .Ltable1_end: /// End second line table .short 0 /// Padding (to make section a word multiple)