diff options
Diffstat (limited to 'tools/translate_minified')
| -rwxr-xr-x | tools/translate_minified | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/tools/translate_minified b/tools/translate_minified new file mode 100755 index 00000000..27cd5473 --- /dev/null +++ b/tools/translate_minified @@ -0,0 +1,106 @@ +#!/bin/sh +# Translate a Mu program to a _minified_ bootable disk image. +# +# Hacky; only intended for some stats at the moment, even though all programs +# I've run through it seem to continue to work. If there are no power-on unit +# tests, I don't trust it. + +set -ev + +# Map of the Mu code disk +export DISK=20160 # 20*16*63 512-byte sectors = almost 10MB +dd if=/dev/zero of=code.img count=$DISK status=none +# code: sectors 0-8999 +# font: sectors 9000-10079 (1080 sectors = space enough for 16k glyphs (1080 * 512 / 34 bytes per glyph)) +export FONT=9000 # keep this sync'd with boot.subx +# debug: sector 10080 onwards +export DEBUG=10080 + +## Code + +cat $* [0-9]*.mu |linux/mu > a.subx + +cat boot.subx |grep -vh '^\s*$\|^\s*#' > a.boot.strip +cat tools/mu-init-minify.subx [0-9]*.subx a.subx|grep -vh '^\s*$\|^\s*#' > a.strip + +# treeshake everything but boot.subx, which isn't quite standard SubX and +# doesn't get parsed correctly by treeshake for some reason. +cat a.strip |tools/treeshake > a.treeshake + +cat a.boot.strip a.treeshake |linux/braces > a.braces + +cat a.braces |linux/calls > a.calls + +cat a.calls |linux/sigils > a.sigils + +cat a.sigils |linux/tests > a.tests + +# no assort since baremetal SubX doesn't have segments yet + +cat a.tests |linux/dquotes > a.dquotes + +cat a.dquotes |linux/pack > a.pack + +cat a.pack |linux/survey_baremetal > labels +cat a.pack |linux/labels_baremetal labels > a.survey + +cat a.survey |linux/hex > a.bin + +dd if=a.bin of=code.img conv=notrunc status=none + +if [ `stat --printf="%s" a.bin` -ge 492544 ] # 15 tracks * 63 sectors per track * 512 bytes per sector (keep this sync'd with boot.subx) +then + echo "a.bin won't all be loaded on boot" + exit 1 +fi + +if [ `stat --printf="%s" a.bin` -ge 492544 ] # 15 tracks * 63 sectors per track * 512 bytes per sector +then + echo "a.bin will overwrite BIOS/Video memory; you'll need to adjust boot.subx to load code to some other non-contiguous area of memory" + exit 1 +fi + +if [ `stat --printf="%s" a.bin` -ge $(($FONT*512)) ] +then + echo "a.bin will overwrite font in disk" + exit 1 +fi + +## Latter half of disk is for debug info + +if [ `stat --printf="%s" labels` -ge 1048576 ] # 8 reads * 256 sectors * 512 bytes per sector +then + echo "labels won't all be loaded on abort" + exit 1 +fi + +if [ `wc -l < labels` -gt 20480 ] # 0x5000 stream capacity in abort.subx +then + echo "abort will go into infinite regress" + exit 1 +fi + +dd if=labels of=code.img seek=$DEBUG conv=notrunc status=none # keep this sync'd with abort.subx + +## Font data at another well-defined location +cat font.subx |sed 's,/[^ ]*,,' |linux/hex > a.font + +if [ `stat --printf="%s" a.font` -ge 262144 ] # 0x200 sectors * 512 bytes per sector (keep this sync'd with boot.subx) +then + echo "font won't all be loaded on boot" + exit 1 +fi + +if [ `stat --printf="%s" a.font` -ge 14680064 ] # 0x00e00000 = 0x00f00000 - 0x00100000 +then + echo "font is so large it overlaps the ISA memory hole; see https://wiki.osdev.org/Memory_Map_(x86)" + exit 1 +fi + +if [ `stat --printf="%s" a.font` -ge $(( ($DEBUG - $FONT) * 512 )) ] +then + echo "font will overwrite debug info in disk" + exit 1 +fi + +dd if=a.font of=code.img seek=$FONT conv=notrunc status=none |