This is the mail archive of the
binutils@sourceware.org
mailing list for the binutils project.
Re: dwarf debug information support for ELF targets in the assembler
Ramana <ramana.venkat83@gmail.com> writes:
> Doesn't it need to know the type (int etc) of
> object
The assembler doesn't know the type, so it can't automatically generate
debug info describing the type.
Of course you can add that debug info yourself--that's what the compiler
does, after all. But you have to write it out yourself. E.g., this is
the debug info that gcc generates for "int i = 2;":
.section .debug_info
.long 0x41
.value 0x2
.long .Ldebug_abbrev0
.byte 0x8
.uleb128 0x1
.long .LASF0
.byte 0x1
.long .LASF1
.quad .Ltext0
.quad .Letext0
.long .Ldebug_line0
.uleb128 0x2
.string "i"
.byte 0x1
.byte 0x1
.long 0x3d
.byte 0x1
.byte 0x9
.byte 0x3
.quad i
.uleb128 0x3
.byte 0x4
.byte 0x5
.string "int"
.byte 0x0
.section .debug_abbrev
.uleb128 0x1
.uleb128 0x11
.byte 0x1
.uleb128 0x25
.uleb128 0xe
.uleb128 0x13
.uleb128 0xb
.uleb128 0x3
.uleb128 0xe
.uleb128 0x11
.uleb128 0x1
.uleb128 0x12
.uleb128 0x1
.uleb128 0x10
.uleb128 0x6
.byte 0x0
.byte 0x0
.uleb128 0x2
.uleb128 0x34
.byte 0x0
.uleb128 0x3
.uleb128 0x8
.uleb128 0x3a
.uleb128 0xb
.uleb128 0x3b
.uleb128 0xb
.uleb128 0x49
.uleb128 0x13
.uleb128 0x3f
.uleb128 0xc
.uleb128 0x2
.uleb128 0xa
.byte 0x0
.byte 0x0
.uleb128 0x3
.uleb128 0x24
.byte 0x0
.uleb128 0xb
.uleb128 0xb
.uleb128 0x3e
.uleb128 0xb
.uleb128 0x3
.uleb128 0x8
.byte 0x0
.byte 0x0
.byte 0x0
.section .debug_pubnames,"",@progbits
.long 0x14
.value 0x2
.long .Ldebug_info0
.long 0x45
.long 0x29
.string "i"
.long 0x0
Ian