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more portable 

https://stackoverflow.com/questions/1815329/portable-way-to-get-file-size-in-bytes-in-the-shell/1815582#1815582
This commit is contained in:
Kartik K. Agaram 2022-02-24 22:08:01 -08:00
parent cab68a5cfc
commit 66a74fdb72
3 changed files with 14 additions and 24 deletions
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3
README.md
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@ -103,9 +103,6 @@ For Macs and other Unix-like systems, use the (much slower) emulator:
./translate_emulated apps/ex2.mu # 2-5 minutes to emit code.img
```
(Mac OS may require either editing `translate_emulated` or installing GNU
coreutils. Look in the script if you get an error about `stat`.)
Mu programs can be written for two very different environments:
* At the top-level, Mu programs emit a bootable image that runs without an OS

14
translate
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@ -37,19 +37,19 @@ cat a.survey |linux/hex
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)
if [ `wc -c < 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
if [ `wc -c < 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)) ]
if [ `wc -c < a.bin` -ge $(($FONT*512)) ]
then
echo "a.bin will overwrite font in disk"
exit 1
@ -57,7 +57,7 @@ fi
## Latter half of disk is for debug info
if [ `stat --printf="%s" labels` -ge 1048576 ] # 8 reads * 256 sectors * 512 bytes per sector
if [ `wc -c < labels` -ge 1048576 ] # 8 reads * 256 sectors * 512 bytes per sector
then
echo "labels won't all be loaded on abort"
exit 1
@ -74,19 +74,19 @@ dd if=labels of=code.img seek=$DEBUG conv=notrunc status=none # keep this sync'
## 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)
if [ `wc -c < 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
if [ `wc -c < 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 )) ]
if [ `wc -c < a.font` -ge $(( ($DEBUG - $FONT) * 512 )) ]
then
echo "font will overwrite debug info in disk"
exit 1

21
translate_emulated
View File

@ -41,26 +41,19 @@ cat a.survey |linux/bootstrap/boots
dd if=a.bin of=code.img conv=notrunc
file_size() {
stat --printf="%s" $*
# if you're on Mac OS and haven't installed GNU coreutils (coreutils on
# Homebrew or Macports), switch this to:
# stat -f "%z" $*
}
if [ `file_size a.bin` -ge 492544 ] # 15 tracks * 63 sectors per track * 512 bytes per sector (keep this sync'd with boot.subx)
if [ `wc -c < 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 [ `file_size a.bin` -ge 492544 ] # 15 tracks * 63 sectors per track * 512 bytes per sector
if [ `wc -c < 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 [ `file_size a.bin` -ge $(($FONT*512)) ]
if [ `wc -c < a.bin` -ge $(($FONT*512)) ]
then
echo "a.bin will overwrite font in disk"
exit 1
@ -68,7 +61,7 @@ fi
## Latter half of disk is for debug info
if [ `file_size labels` -ge 1048576 ] # 8 reads * 256 sectors * 512 bytes per sector
if [ `wc -c < labels` -ge 1048576 ] # 8 reads * 256 sectors * 512 bytes per sector
then
echo "labels won't all be loaded on abort"
exit 1
@ -85,19 +78,19 @@ dd if=labels of=code.img seek=$DEBUG conv=notrunc
## Font data at another well-defined location
cat font.subx |sed 's,/[^ ]*,,' |linux/bootstrap/bootstrap run linux/hex > a.font
if [ `file_size a.font` -ge 262144 ] # 0x200 sectors * 512 bytes per sector (keep this sync'd with boot.subx)
if [ `wc -c < 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 [ `file_size a.font` -ge 14680064 ] # 0x00e00000 = 0x00f00000 - 0x00100000
if [ `wc -c < 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 [ `file_size a.font` -ge $(( ($DEBUG - $FONT) * 512 )) ]
if [ `wc -c < a.font` -ge $(( ($DEBUG - $FONT) * 512 )) ]
then
echo "font will overwrite debug info in disk"
exit 1