# SPDX-License-Identifier: AGPL-3.0-or-later
# Copyright (C) 2026 David (Corey) Herrera
# Foundry TT backend — off-device unit test of the kernel-driver boundary (ft_tt_kmd.c).
#
#   make -f Makefile.kmd check   build and run both arms
#   make -f Makefile.kmd red     clean first, then build and run (use for every mutation)
#
# NO DEVICE. ft_tt_kmd.c is compiled with ft_tt_kmd_fake_syscalls.h force-included, which
# points its open/close/ioctl/mmap/munmap seam at fakes in test_kmd.c. Nothing here can reach
# /dev/tenstorrent. Two arms, because the NoC fence changes behaviour:
#   test_kmd       default build — aiming a window must be -EPERM with no syscall
#   test_kmd_noc   -DFT_TT_PHASE1B_NOC_ENABLED — aiming issues CONFIGURE_WINDOW
#
# `red` rebuilds from scratch: Apple's GNU make 3.81 skips a rebuild of a source edited in
# the same second as its object (coding-best-practices.md §9).

CC      ?= cc
SRC_DIR := ..
BUILD   := build-kmd

CFLAGS  := -std=c99 -O1 -g \
           -Wall -Wextra -Werror -pedantic \
           -Wshadow -Wconversion -Wstrict-prototypes -Wformat=2 \
           -fstack-protector-strong -U_FORTIFY_SOURCE \
           -I$(SRC_DIR) -I.

DEPFLAGS := -MMD -MP
FAKES    := -include ft_tt_kmd_fake_syscalls.h
NOC      := -DFT_TT_PHASE1B_NOC_ENABLED

TARGETS := $(BUILD)/test_kmd $(BUILD)/test_kmd_noc

.PHONY: all check red clean

all: $(TARGETS)

$(BUILD):
	mkdir -p $(BUILD)

$(BUILD)/ft_tt_kmd.o: $(SRC_DIR)/ft_tt_kmd.c | $(BUILD)
	$(CC) $(CFLAGS) $(DEPFLAGS) $(FAKES) -c $< -o $@

$(BUILD)/ft_tt_kmd_noc.o: $(SRC_DIR)/ft_tt_kmd.c | $(BUILD)
	$(CC) $(CFLAGS) $(DEPFLAGS) $(FAKES) $(NOC) -c $< -o $@

$(BUILD)/test_kmd.o: test_kmd.c | $(BUILD)
	$(CC) $(CFLAGS) $(DEPFLAGS) -c $< -o $@

$(BUILD)/test_kmd_noc.o: test_kmd.c | $(BUILD)
	$(CC) $(CFLAGS) $(DEPFLAGS) $(NOC) -c $< -o $@

$(BUILD)/ft_tt_test_report.o: ft_tt_test_report.c | $(BUILD)
	$(CC) $(CFLAGS) $(DEPFLAGS) -c $< -o $@

$(BUILD)/test_kmd: $(BUILD)/ft_tt_kmd.o $(BUILD)/test_kmd.o $(BUILD)/ft_tt_test_report.o
	$(CC) $(CFLAGS) $^ -o $@

$(BUILD)/test_kmd_noc: $(BUILD)/ft_tt_kmd_noc.o $(BUILD)/test_kmd_noc.o \
                       $(BUILD)/ft_tt_test_report.o
	$(CC) $(CFLAGS) $^ -o $@

check: $(TARGETS)
	./$(BUILD)/test_kmd
	./$(BUILD)/test_kmd_noc

red: clean $(TARGETS)
	-./$(BUILD)/test_kmd
	-./$(BUILD)/test_kmd_noc

clean:
	rm -rf $(BUILD)

-include $(wildcard $(BUILD)/*.d)