6aa94c64a5
This is a preparatory patch for extending DWARFDebugLine to properly parse line number programs with maximum_operations_per_instruction > 1 for VLIW targets. Add some scaffolding for handling op-index in line number programs, and add printouts for that in the table. As this affects a lot of tests, this is done in a separate commit to get a cleaner review for the actual op-index implementation. Verbose printouts are not present in many tests, and adding op-index to those will require a bit more code changes, so that is done in the actual implementation patch. Reviewed By: StephenTozer Differential Revision: https://reviews.llvm.org/D152535
153 lines
6.1 KiB
ArmAsm
153 lines
6.1 KiB
ArmAsm
// RUN: llvm-mc %s -defsym ALIGN_4=1 -save-temp-labels -filetype obj -triple arm-none-eabi -o %t.o
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// RUN: llvm-nm %t.o | FileCheck %s --check-prefix=L4
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// RUN: llvm-dwarfdump -debug-line %t.o 2>&1 | FileCheck %s --implicit-check-not='warning:' --check-prefix=MULT4
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// RUN: llvm-mc %s -defsym ALIGN_8=1 -save-temp-labels -filetype obj -triple arm-none-eabi -o %t.o
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// RUN: llvm-nm %t.o | FileCheck %s --check-prefix=L8
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// RUN: llvm-dwarfdump -debug-line %t.o 2>&1 | FileCheck %s --implicit-check-not='warning:' --check-prefix=MULT8
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// RUN: llvm-mc %s -defsym UNALIGNED_PADDING=1 -save-temp-labels -filetype obj -triple arm-none-eabi -o %t.o
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// RUN: llvm-nm %t.o | FileCheck %s --check-prefix=LUNALIGN
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// RUN: llvm-dwarfdump -debug-line %t.o 2>&1 | FileCheck %s --check-prefix=UNALIGN
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/// This test is based on a real example from ARM C/C++ Compiler.
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/// It verifies llvm-dwarfdump is able to dump line tables even if they've been
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/// placed at aligned offsets.
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// L4: 0000002b N .Ltable0_end
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// MULT4: Address Line Column File ISA Discriminator OpIndex Flags
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// MULT4-NEXT: ------------------ ------ ------ ------ --- ------------- ------- -------------
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// MULT4-NEXT: 0x0000000000000000 1 0 1 0 0 0 is_stmt end_sequence
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// MULT4-EMPTY:
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// MULT4-NEXT: debug_line[0x0000002c]
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// MULT4-NEXT: Line table prologue:
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// MULT4-NEXT: total_length: 0x0000003a{{$}}
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// MULT4-NEXT: format: DWARF32
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// MULT4-NEXT: version: 2{{$}}
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// MULT4-NEXT: prologue_length: 0x0000001a
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// MULT4-NEXT: min_inst_length: 2
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// MULT4-NEXT: default_is_stmt: 1
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// L8: 00000027 N .Ltable0_end
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// MULT8: Address Line Column File ISA Discriminator OpIndex Flags
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// MULT8-NEXT: ------------------ ------ ------ ------ --- ------------- ------- -------------
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// MULT8-NEXT: 0x0000000000000000 1 0 1 0 0 0 is_stmt end_sequence
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// MULT8-EMPTY:
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// MULT8-NEXT: debug_line[0x00000028]
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// MULT8-NEXT: Line table prologue:
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// MULT8-NEXT: total_length: 0x0000003a{{$}}
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// MULT8-NEXT: format: DWARF32
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// MULT8-NEXT: version: 2{{$}}
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// MULT8-NEXT: prologue_length: 0x0000001a
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// MULT8-NEXT: min_inst_length: 2
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// MULT8-NEXT: default_is_stmt: 1
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/// This should fail to dump:
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// LUNALIGN: 00000027 N .Ltable0_end
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// UNALIGN: warning: parsing line table prologue at offset 0x00000027: unsupported version
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.section .debug_line
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/// First line table
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/// Unit total length:
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.long .Ltable0_end - .Ltable0_start
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.Ltable0_start:
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.short 2 /// Version
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/// Header length:
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.long .Ltable0_header_end - .Ltable0_header_start
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.Ltable0_header_start:
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.byte 4 /// Min instruction length
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.byte 1 /// Max operations per instruction
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.byte 0 /// Default is statement
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.byte 6 /// Line range
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.byte 10 /// Opcode base
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.byte 0 /// standard_opcode_lengths[DW_LNS_copy] = 0
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.byte 1 /// standard_opcode_lengths[DW_LNS_advance_pc] = 1
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.byte 1 /// standard_opcode_lengths[DW_LNS_advance_line] = 1
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.byte 1 /// standard_opcode_lengths[DW_LNS_set_file] = 1
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.byte 1 /// standard_opcode_lengths[DW_LNS_set_column] = 1
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.byte 0 /// standard_opcode_lengths[DW_LNS_negate_stmt] = 0
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.byte 0 /// standard_opcode_lengths[DW_LNS_set_basic_block] = 0
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.byte 0 /// standard_opcode_lengths[DW_LNS_const_add_pc] = 0
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.byte 0 /// standard_opcode_lengths[DW_LNS_fixed_advance_pc] = 0
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.byte 0 /// No include directories
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/// File name:
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.ifdef ALIGN_4
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/// Pad out filename so next 4 byte aligned offset is a multiple of 4 and not 8.
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.asciz "foobar.cpp"
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.else
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.asciz "test.c"
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.endif
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.byte 0 /// Dir idx
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.byte 0 /// Mod time
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.byte 0 /// Length
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.byte 0 /// End files
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.Ltable0_header_end:
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/// Line table operations
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.byte 0 /// Extended opcode
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.byte 1 /// Length 1
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.byte 1 /// DW_LNE_end_sequence
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.Ltable0_end:
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/// End first line table
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/// Padding:
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.ifdef UNALIGNED_PADDING
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.short 0
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.else
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.byte 0
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.endif
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/// Second line table
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/// Unit total length:
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.long .Ltable1_end - .Ltable1_start
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.Ltable1_start:
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.short 2 /// Version
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/// Header length:
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.long .Ltable1_header_end - .Ltable1_header_start
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.Ltable1_header_start:
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.byte 2 /// Min instruction length
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.byte 1 /// Max operations per instruction
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.byte 0 /// Default is statement
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.byte 6 /// Line range
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.byte 10 /// Opcode base
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.byte 0 /// standard_opcode_lengths[DW_LNS_copy] = 0
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.byte 1 /// standard_opcode_lengths[DW_LNS_advance_pc] = 1
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.byte 1 /// standard_opcode_lengths[DW_LNS_advance_line] = 1
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.byte 1 /// standard_opcode_lengths[DW_LNS_set_file] = 1
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.byte 1 /// standard_opcode_lengths[DW_LNS_set_column] = 1
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.byte 0 /// standard_opcode_lengths[DW_LNS_negate_stmt] = 0
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.byte 0 /// standard_opcode_lengths[DW_LNS_set_basic_block] = 0
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.byte 0 /// standard_opcode_lengths[DW_LNS_const_add_pc] = 0
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.byte 0 /// standard_opcode_lengths[DW_LNS_fixed_advance_pc] = 0
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.byte 0 /// No include directories
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.asciz "test.c" /// File name
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.byte 0 /// Dir idx
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.byte 0 /// Mod time
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.byte 0 /// Length
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.byte 0 /// End files
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.Ltable1_header_end:
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/// Line table operations
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.byte 4 /// DW_LNS_set_file
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.byte 1 /// File 1
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.byte 5 /// DW_LNS_set_column
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.byte 1 /// Column 1
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.byte 0 /// Extended opcode
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.byte 5 /// Length 5
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.byte 2 /// DW_LNE_set_address
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.long 32896 /// Address = 0x00008080
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.byte 3 /// DW_LNS_advance_line
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.byte 6 /// Line += 6
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.byte 1 /// DW_LNS_copy
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.byte 5 /// DW_LNS_set_column
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.byte 2 /// Column 2
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.byte 12 /// Special opcode (address += 0, line += 2)
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.byte 30 /// Special opcode (address += 6, line += 2)
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.byte 5 /// DW_LNS_set_column
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.byte 1 /// Column 1
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.byte 17 /// Special opcode (address += 2, line += 1)
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.byte 2 /// DW_LNS_advance_pc
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.byte 4 /// += (4 * min instruction length)
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.byte 0 /// Extended opcode
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.byte 1 /// Length 1
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.byte 1 /// DW_LNE_end_sequence
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.Ltable1_end:
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/// End second line table
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.short 0 /// Padding (to make section a word multiple)
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