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Current LLVM implementation uses `MCAsmInfo::CodePointerSize` as addr_size when emitting the DWARF data. llvm-dwarfdump, on the other hand, handles `addr_size`s of 4 and 8 properly and considers all other sizes as an error. This works for most of mainline targets except for MSP430 and AVR. msp430-gcc v8.3.1 emits DWARF32 with addr_size = 4 (DWARF32 does not imply addr_size = 4, 32 refers to internal offset width of 4 bytes) that is handled by llvm-dwarfdump already. Still, emitting 2-byte target pointers on MSP430 seems correct as well (but not for MSP430X that is supported by msp430-gcc but not by LLVM and has 20-bit address space). This patch make it possible for MSP430 debug info support to be tested with llvm-dwarfdump. Differential Revision: https://reviews.llvm.org/D82055
35 lines
1.5 KiB
Plaintext
35 lines
1.5 KiB
Plaintext
; Test that llvm-dwarfdump can handle DWARF32 v3 with addr_size = 0x02
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; Input object file was produced from source containing just "int x;" with
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; clang -target avr -gdwarf-3 -c dwarfdump-16bit-addr.c
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; REQUIRES: avr-registered-target
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; RUN: llvm-dwarfdump --debug-info %S/Inputs/dwarfdump-16bit-addr.o | FileCheck %s
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; RUN: llvm-dwarfdump --verify %S/Inputs/dwarfdump-16bit-addr.o
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; CHECK: Inputs/dwarfdump-16bit-addr.o: file format elf32-avr
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; CHECK: .debug_info contents:
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; CHECK: 0x00000000: Compile Unit: length = 0x00000032, format = DWARF32, version = 0x0003, abbr_offset = 0x0000, addr_size = 0x02 (next unit at 0x00000036)
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; CHECK: 0x0000000b: DW_TAG_compile_unit
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; CHECK: DW_AT_producer ("clang version 10.0.0-4ubuntu1 ")
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; CHECK: DW_AT_language (DW_LANG_C99)
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; CHECK: DW_AT_name ("dwarfdump-16bit-addr.c")
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; CHECK: DW_AT_stmt_list (0x00000000)
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; CHECK: DW_AT_comp_dir ("/tmp")
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; CHECK: 0x0000001e: DW_TAG_variable
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; CHECK: DW_AT_name ("x")
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; CHECK: DW_AT_type (0x0000002e "int")
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; CHECK: DW_AT_external (0x01)
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; CHECK: DW_AT_decl_file ("/tmp{{[/\\]}}dwarfdump-16bit-addr.c")
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; CHECK: DW_AT_decl_line (1)
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; CHECK: DW_AT_location (DW_OP_addr 0x0)
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; CHECK: 0x0000002e: DW_TAG_base_type
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; CHECK: DW_AT_name ("int")
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; CHECK: DW_AT_encoding (DW_ATE_signed)
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; CHECK: DW_AT_byte_size (0x02)
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; CHECK: 0x00000035: NULL
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