7460 - baremetal backend for SubX

baremetal/ex1.subx

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+# The simplest possible program: just an infinite loop.
+# All is well if your computer clears screen and hangs without restarting.
+# On an emulator the window may get bigger to accomodate the higher-resolution
+# graphics mode.
+#
+# To convert to a disk image, first prepare a realistically sized disk image:
+#   dd if=/dev/zero of=disk.img count=20160          # 512-byte sectors, so 10MB
+# Load the program on the disk image:
+#   ./translate_subx_baremetal baremetal/ex1.subx    # emits a.bin
+#   apps/hex < baremetal/boot.hex  > boot.bin
+#   cat boot.bin a.bin > disk.bin
+#   dd if=disk.bin of=disk.img conv=notrunc
+# To run:
+#   qemu-system-i386 disk.img
+# Or:
+#   bochs -f baremetal/boot.bochsrc  # boot.bochsrc loads disk.img
+
+== code
+
+$loop:
+e9/jump $loop/disp32
+
+# vim:ft=subx

translate_subx_baremetal

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+#!/bin/sh
+# Translate given SubX files to 'baremetal'. The output isn't an ELF binary
+# and won't run directly on Linux or the emulator. It's intended to be
+# combined with some boot sectors into a bootable disk image.
+
+set -e
+
+./build
+
+cat $*          |apps/braces            > a.braces
+
+cat a.braces    |apps/calls             > a.calls
+
+cat a.calls     |apps/sigils            > a.sigils
+
+cat a.sigils    |apps/tests             > a.tests
+
+# no assort since baremetal SubX doesn't have segments yet
+
+cat a.tests     |apps/dquotes           > a.dquotes
+
+cat a.dquotes   |apps/pack              > a.pack
+
+cat a.pack      |apps/survey_baremetal  > a.survey
+
+cat a.survey    |apps/hex               > a.bin