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| author | Nicholas Noll <nbnoll@eml.cc> | 2021-11-20 09:53:11 -0800 |
|---|---|---|
| committer | Nicholas Noll <nbnoll@eml.cc> | 2021-11-20 09:53:11 -0800 |
| commit | 1c8d4e69205fd875f6bec3fa3bd929c2e7f52f62 (patch) | |
| tree | 8bb6233e8f59d574e99a55a8c9aaf4d90396a2ce /rules.mk | |
| parent | 59d87ccc99f431da06a0ffab0d3e702d9ef82f48 (diff) | |
Feature: self hosting prototype implemented
This is a large change. In order to remove myself from libc's arcane
interface, I implemented an independent runtime layer. It is based on
musl's wonderful implementation mostly. Critically, if libc is linked to
the program, then we cooperate. Namely, we call start main and let libc
do all initialization. If not, then we have a noop defined in rt3.a.
The general structure of the file is:
1. sys/$os/$arch contains all architecture dependent code
2. sys/$os/port contains all code that depends on the os, but is
portable
3. rt/$arch contains all the runtime architecture dependent code
4. rt/* contains the portable runtime code.
Obviously testing is needed. Specifically, while code is checked in for
the most popular architectures, it only has been tested on one computer!
Overall this is exciting and as been educational.
Diffstat (limited to 'rules.mk')
| -rw-r--r-- | rules.mk | 22 |
1 files changed, 13 insertions, 9 deletions
@@ -1,5 +1,5 @@ # Standard housekeeping -.PHONY: all debug release clean target install +.PHONY: all debug release system bins libs tests clean target install .SUFFIXES: all: targets @@ -27,10 +27,6 @@ TEST := GENS := -# iterate through source directory tree -DIR := src -include $(DIR)/rules.mk - # generic rules %.a: %.o $(ARCHIVE) @@ -39,9 +35,10 @@ include $(DIR)/rules.mk $(LINK) # explicit system layer -include sys.mk +DIR := sys +include $(DIR)/rules.mk -# rules for userland +# userland rules $(OBJ_DIR)/%.o: $(SRC_DIR)/%.c $(COMPILE) @@ -51,11 +48,18 @@ $(OBJ_DIR)/%.o: $(SRC_DIR)/%.s $(OBJ_DIR)/%: $(SRC_DIR)/%.c $(COMPLINK) -targets: $(SYS) $(LIBS) $(BINS) $(TEST) +# iterate through source directory tree +DIR := src +include $(DIR)/rules.mk + +system: $(RUNTIME) +bins: system $(BINS) +tests: system $(TEST) +targets: libs bins tests clean: @echo removing system layer - @rm -f $(SYS_OBJS) $(OBJ_DIR)/sys/sys.a + @rm -f $(SYS_OBJS) $(SYS) $(RT) $(RT_OBJS) $(RT1) $(RTI) $(RTN) @echo removing object files @rm -f $(OBJS) @echo removing dependency files |