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[PATCH 0/7] gas: Fixes for DWARF2 debug info with OCTETS_PER_BYTE>1
- From: Christian Eggers <ceggers at gmx dot de>
- To: binutils at sourceware dot org
- Cc: Christian Eggers <ceggers at gmx dot de>
- Date: Sun, 10 Mar 2019 19:21:51 +0100
- Subject: [PATCH 0/7] gas: Fixes for DWARF2 debug info with OCTETS_PER_BYTE>1
I'm working on a binutils port for the SDMA controller which is inside many
of NXP's i.MX SOCs. In contrast to most other architectures, the SDMA has
16 bit per instruction address (OCTETS_PER_BYTE=2). Up to now, no architecture
with OCTETS_PER_BYTE>1 uses DWARF debug information (tic4x and tic54x use
With OCTETS_PER_BYTE=2, the smallest addressable unit is 16 bit. This is
problematic with DWARF2 debug information, as this format always uses 8 bit
quantities. Resulting problems can be truncated sections and displaced
These patch series fixes the generation of DWARF debug information in gas for
these architectures, which is a prerequisite for the SDMA port.
These changes should not affect existing architectures as all targets currently
using DWARF2 have 8 bit per byte.
Christian Eggers (7):
[gas] dwarf2: Fix calculation of line info offset
[gas] Allow to create symbols with octets value
[gas] dwarf2: Use octets for dwarf2 headers
[gas] dwarf2: Use octets for .debug_line prologue
[gas] dwarf2: Use octets for .debug_string offsets
[gas] dwarf2: Pad size of .debug_line section.
[gas] dwarf2: Align relocation within .debug_line section
gas/ChangeLog | 42 ++++++++++++++++++++++++++++++++++++++++++
gas/dwarf2dbg.c | 55 ++++++++++++++++++++++++++++++++++++++++++-------------
gas/symbols.c | 39 ++++++++++++++++++++++++++++++++++++++-
gas/symbols.h | 3 +++
4 files changed, 125 insertions(+), 14 deletions(-)