klunky attempt to support BSD stat
Many thanks again, Wade.
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@ -103,6 +103,9 @@ For Macs and other Unix-like systems, use the (much slower) emulator:
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./translate_emulated apps/ex2.mu # 2-5 minutes to emit code.img
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./translate_emulated apps/ex2.mu # 2-5 minutes to emit code.img
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```
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```
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(Mac OS may require either editing `translate_emulated` or installing GNU
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coreutils. Look in the script if you get an error about `stat`.)
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Mu programs can be written for two very different environments:
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Mu programs can be written for two very different environments:
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* At the top-level, Mu programs emit a bootable image that runs without an OS
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* At the top-level, Mu programs emit a bootable image that runs without an OS
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@ -41,19 +41,26 @@ cat a.survey |linux/bootstrap/boots
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dd if=a.bin of=code.img conv=notrunc
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dd if=a.bin of=code.img conv=notrunc
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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)
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file_size() {
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stat --printf="%s" $*
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# if you're on Mac OS and haven't installed GNU coreutils (coreutils on
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# Homebrew or Macports), switch this to:
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# stat -f "%z" $*
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}
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if [ `file_size a.bin` -ge 492544 ] # 15 tracks * 63 sectors per track * 512 bytes per sector (keep this sync'd with boot.subx)
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then
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then
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echo "a.bin won't all be loaded on boot"
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echo "a.bin won't all be loaded on boot"
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exit 1
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exit 1
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fi
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fi
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if [ `stat --printf="%s" a.bin` -ge 492544 ] # 15 tracks * 63 sectors per track * 512 bytes per sector
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if [ `file_size a.bin` -ge 492544 ] # 15 tracks * 63 sectors per track * 512 bytes per sector
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then
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then
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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"
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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"
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exit 1
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exit 1
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fi
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fi
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if [ `stat --printf="%s" a.bin` -ge $(($FONT*512)) ]
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if [ `file_size a.bin` -ge $(($FONT*512)) ]
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then
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then
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echo "a.bin will overwrite font in disk"
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echo "a.bin will overwrite font in disk"
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exit 1
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exit 1
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@ -61,7 +68,7 @@ fi
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## Latter half of disk is for debug info
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## Latter half of disk is for debug info
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if [ `stat --printf="%s" labels` -ge 1048576 ] # 8 reads * 256 sectors * 512 bytes per sector
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if [ `file_size labels` -ge 1048576 ] # 8 reads * 256 sectors * 512 bytes per sector
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then
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then
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echo "labels won't all be loaded on abort"
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echo "labels won't all be loaded on abort"
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exit 1
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exit 1
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@ -78,19 +85,19 @@ dd if=labels of=code.img seek=$DEBUG conv=notrunc
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## Font data at another well-defined location
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## Font data at another well-defined location
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cat font.subx |sed 's,/[^ ]*,,' |linux/bootstrap/bootstrap run linux/hex > a.font
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cat font.subx |sed 's,/[^ ]*,,' |linux/bootstrap/bootstrap run linux/hex > a.font
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if [ `stat --printf="%s" a.font` -ge 262144 ] # 0x200 sectors * 512 bytes per sector (keep this sync'd with boot.subx)
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if [ `file_size a.font` -ge 262144 ] # 0x200 sectors * 512 bytes per sector (keep this sync'd with boot.subx)
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then
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then
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echo "font won't all be loaded on boot"
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echo "font won't all be loaded on boot"
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exit 1
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exit 1
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fi
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fi
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if [ `stat --printf="%s" a.font` -ge 14680064 ] # 0x00e00000 = 0x00f00000 - 0x00100000
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if [ `file_size a.font` -ge 14680064 ] # 0x00e00000 = 0x00f00000 - 0x00100000
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then
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then
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echo "font is so large it overlaps the ISA memory hole; see https://wiki.osdev.org/Memory_Map_(x86)"
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echo "font is so large it overlaps the ISA memory hole; see https://wiki.osdev.org/Memory_Map_(x86)"
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exit 1
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exit 1
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fi
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fi
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if [ `stat --printf="%s" a.font` -ge $(( ($DEBUG - $FONT) * 512 )) ]
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if [ `file_size a.font` -ge $(( ($DEBUG - $FONT) * 512 )) ]
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then
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then
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echo "font will overwrite debug info in disk"
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echo "font will overwrite debug info in disk"
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exit 1
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exit 1
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