hw,ui: Reduce QEMU .rodata/.bss footprint

[PATCH 0/6] hw,ui: Reduce QEMU .rodata/.bss footprint

Philippe Mathieu-Daudé posted 6 patches 5 years, 8 months ago

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git fetch https://github.com/patchew-project/qemu tags/patchew/20200304221807.25212-1-philmd@redhat.com

Maintainers: Gerd Hoffmann <kraxel@redhat.com>

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hw/usb/quirks.h      | 10 +++++-----
hw/audio/fmopl.c     |  8 +++++---
hw/audio/intel-hda.c | 24 ++++++++++--------------
ui/curses.c          | 10 +++++++---
4 files changed, 27 insertions(+), 25 deletions(-)

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[PATCH 0/6] hw,ui: Reduce QEMU .rodata/.bss footprint

Posted by Philippe Mathieu-Daudé 5 years, 8 months ago

This series reduce the footprint of the QEMU binary:
.bss: 106KiB (moved to .heap)
.rodata: 4.34MiB
(sizes on x86_64 building with -Os)

The elf-dissector tool [1] [2] helped to notice the big array.

[1] https://phabricator.kde.org/source/elf-dissector/
[2] https://www.volkerkrause.eu/2019/06/22/elf-dissector-aarch64-support.html

Philippe Mathieu-Daudé (6):
  hw/audio/fmopl: Fix a typo twice
  hw/audio/fmopl: Move ENV_CURVE to .heap to save 32KiB of .bss
  hw/usb/quirks: Use smaller types to reduce .rodata by 10KiB
  hw/audio/intel-hda: Use memory region alias to reduce .rodata by
    4.34MB
  ui/curses: Make control_characters[] array const
  ui/curses: Move arrays to .heap to save 74KiB of .bss

 hw/usb/quirks.h      | 10 +++++-----
 hw/audio/fmopl.c     |  8 +++++---
 hw/audio/intel-hda.c | 24 ++++++++++--------------
 ui/curses.c          | 10 +++++++---
 4 files changed, 27 insertions(+), 25 deletions(-)

-- 
2.21.1