152 lines
5.5 KiB
Bash
152 lines
5.5 KiB
Bash
#!/bin/bash
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# This script has been honed over quite a few iterations. The trick is to make
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# it easy for you to see what transformations occur
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# without burying you in files.
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# Also, coccinelle is not perfect, so we have to help her at times. As she
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# gets smarter, we can shrink thigns we do in here.
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# So we get input files, then do per-file changes, then do all-file changes
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# I've deliberately made this script simple. Please don't decide it needs to
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# be automagic. Just let it work in its simple way. Also, if you change even
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# one simple thing, ALWAYS rerun this script do make sure you did not make a
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# global test. NEVER test one little thing in isolation. That way
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# lies madness.
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# The only thing you need to set is
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# export LINUX=/path/to/your/linux/tree.
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# Order in which we do things.
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# 1. Get source files into inputs.
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# 2. cp them to per-file-changes
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# Note that we even copy ones that might not currently need per-file
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# changes. Because they may in future and it keeps the script simple.
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# We tried both ways and like this best.
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# 3. run 'ed' across a few files that need it
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# 4. run coccinelle with any per-file changes
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# There is some ugliness here as we have to do a reverse patch step. Sorry.
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# 5. cp per-file-changes/* to final
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# 6. run coccinelle files that apply to more than one file
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# it's best to run coccinelle on as many files as possible, she's pretty
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# smart about
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# certain transformations, e.g. if you remove a function definition she can
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# remove all calls to that function (usually)
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#
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# Now you can
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# make (will build all working tools)
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# or
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# make broken
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# for things that don't build yet.
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# Step 1
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rm inputs/* per-file-changes/* final/* tmp/*
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cp $LINUX/drivers/gpu/drm/i915/i915_reg.h inputs
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cp $LINUX/drivers/gpu/drm/i915/i915_drv.? inputs
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cp $LINUX/drivers/gpu/drm/i915/intel_display.c inputs
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cp $LINUX/drivers/gpu/drm/i915/intel_bios.c inputs
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cp $LINUX/drivers/gpu/drm/i915/intel_bios.h inputs
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cp $LINUX/drivers/gpu/drm/i915/intel_ringbuffer.h inputs
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cp $LINUX/drivers/gpu/drm/i915/i915_dma.c inputs
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cp $LINUX/include/drm/drm_crtc.h inputs
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cp $LINUX/include/drm/drm_mode.h inputs
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cp $LINUX/include/drm/drm_dp_helper.h inputs
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cp $LINUX/drivers/gpu/drm/drm_modes.c inputs
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# Step 2
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cp inputs/* per-file-changes
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# Step 3
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# We tried sed but it had some issues that ed did not
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# coccinelle can't handle anonymous structs
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# also some stuff is easier with ed.
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# also there are bugs spatches/in coccinelle it seems :-(
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# the literal deletes below suck and we need to figure
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# out wtf went wrong.
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ed per-file-changes/i915_drv.h << EOF
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/intel_gtt/
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.
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?struct *{?,/mm;/d
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.
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/i915_trace.h/
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.
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.,/#define POSTING_READ16/d
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/struct *intel_gmbus/
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.,/\*gmb/d
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.
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g/notifier_block/d
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g/struct *drm_i915_display_funcs *display;/d
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g/struct *completion *[a-z].*;/d
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w
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q
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EOF
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ed per-file-changes/drm_crtc.h <<EOF
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/drm_crtc_init/,/endif/-d
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w
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q
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EOF
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ed per-file-changes/intel_display.c << EOF
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g/mode_config.funcs *=/d
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g/fb_base/d
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g/const/s///
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w
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q
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EOF
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# Reverse patches. We hope these will go away someday.
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>per-file-changes/intel_bios.c
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spatch -sp_file spatches/getfn.cocci inputs/intel_bios.c -U 0 > tmp/res
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./plusplusplus tmp/res per-file-changes/intel_bios.c
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(cd per-file-changes/; patch -p1 -R ) < tmp/res.pat
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>per-file-changes/drm_modes.c
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spatch -sp_file spatches/getdrmmodefn.cocci inputs/drm_modes.c -U 0 \
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> tmp/drm_modes
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./plusplusplus tmp/drm_modes per-file-changes/drm_modes.c
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(cd per-file-changes/; patch -p1 -R ) < tmp/drm_modes.pat
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spatch -sp_file spatches/i915_dma.c.cocci inputs/i915_dma.c -U 0 \
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> tmp/i915_dma.c.patch
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./plusplusplus tmp/i915_dma.c.patch per-file-changes/i915_dma.c
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# This is the only way I can make sure the right file gets patched!
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# someone tell me why. It keeps picking the wrong one.
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(cd per-file-changes/; patch -p1 -R ) < tmp/i915_dma.c.patch.pat
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spatch --in-place -sp_file spatches/fixcalls.cocci per-file-changes/i915_dma.c
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#patch -p0 -R < tmp/i915_dma.c.patch.pat
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#echo '#include "video.h"'
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>per-file-changes/i915_drv.c
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spatch -sp_file spatches/i915_drv.c.cocci inputs/i915_drv.c -U 0 \
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> tmp/i915_drv.c.patch
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./plusplusplus tmp/i915_drv.c.patch per-file-changes/i915_drv.c
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# This is the only way I can make sure the right file gets patched!
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# someone tell me why. It keeps picking the wrong one.
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(cd per-file-changes/; patch -p1 -R ) < tmp/i915_drv.c.patch.pat
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spatch --in-place -sp_file spatches/fixcalls.cocci per-file-changes/i915_drv.c
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# Finally, a basic spatch sequence!
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spatch --in-place -sp_file \
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spatches/intel_display.c.cocci per-file-changes/intel_display.c \
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> /dev/null
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spatch --in-place -sp_file spatches/i915_drv.cocci \
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per-file-changes/i915_drv.h >/dev/null
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# Now do the common changes to all files.
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cp per-file-changes/* final
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spatch --in-place -sp_file spatches/ringbuffer.cocci \
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final/intel_ringbuffer.h >/dev/null
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spatch --in-place -sp_file spatches/removeinclude.cocci \
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final/intel_display.c > /dev/null
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spatch --in-place -sp_file spatches/fixcalls.cocci final/intel_display.c \
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>/dev/null
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spatch --in-place -sp_file spatches/ringbuffer.cocci final/drm_dp_helper.h\
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>/dev/null
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spatch --in-place -sp_file spatches/removeinclude.cocci final/drm_dp_helper.h\
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>/dev/null
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spatch --in-place -sp_file spatches/i915_drv.cocci final/intel_ringbuffer.h\
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>/dev/null
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spatch --in-place -sp_file spatches/deldev.cocci final/intel_bios.c \
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final/intel_bios.h final/i915_drv.h final/intel_ringbuffer.h>/dev/null
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spatch --in-place -sp_file spatches/fixcalls.cocci final/intel_bios.c \
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>/dev/null
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spatch --in-place -sp_file spatches/drm_crtc.cocci final/drm_crtc.h >/dev/null
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