179 lines
7.5 KiB
Makefile
179 lines
7.5 KiB
Makefile
# Part of JoeyLib, Copyright (c) 2026 Scott Duensing, under the MIT License.
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# See LICENSE.md for license information.
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# SPDX-License-Identifier: MIT
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#
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# Amiga (Bebbo m68k-amigaos-gcc) build rules: JoeyLib's library for the
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# Amiga, and programRules, the Amiga's rules for one program, which
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# make/programs.mk instantiates for every program (a project reaches both
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# through make/project.mk). JoeyLib's own examples are at the end.
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PLATFORM := amiga
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include $(dir $(lastword $(MAKEFILE_LIST)))/common.mk
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$(call requireTool,$(AMIGA_CC),toolchain:amiga)
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$(call requireTool,$(AMIGA_AS),toolchain:amiga)
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$(call requireTool,$(AMIGA_PTPLAYER)/ptplayer.asm,toolchain:amiga)
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# PTPlayer is installed by ./install.sh (AMIGA_PTPLAYER); we
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# reference its ptplayer.asm + header from there rather than copying
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# them into the source tree, so the installer can refresh / version it
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# independently. -I on $(SRC_DIR)/amiga lets ptplayer.h resolve
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# <SDI_compiler.h> from the machine-local shim alongside our code.
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PTPLAYER_DIR := $(AMIGA_PTPLAYER)
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# -fno-common: gcc 6 merges a program's uninitialized global into a library
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# one of the same name; gcc 10 on (every other port) refuses the link.
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CFLAGS := $(COMMON_CFLAGS) -m68000 -fomit-frame-pointer -fno-common -noixemul -D__OSCOMPAT -I$(SRC_DIR)/amiga -I$(SRC_68K) -I$(PTPLAYER_DIR) -MMD -MP
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# OSCOMPAT=1 selects PTPlayer's audio.device-friendly variant (uses
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# CIA-B + audio.device interrupts via the OS rather than taking over
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# Paula directly), matching the way our HAL cooperates with Intuition.
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# vasm is only invoked for ptplayer.asm here -- Frank Wille's source
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# is written in Devpac/vasm syntax and there is no maintained GAS-
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# syntax port. JoeyLib's own .s files are GAS syntax and assembled by
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# the bundled m68k-amigaos-as via the gcc driver.
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# -Fhunk matches Bebbo gcc-amigaos's AmigaOS HUNK object format. ELF
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# objects from vasm cannot be linked into a HUNK libjoey.a (the ar
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# "file format not recognized" failure mode is silent at archive time
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# and surfaces as undefined references at every binary's link step).
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PTPLAYER_ASFLAGS := -Fhunk -m68000 -quiet -DOSCOMPAT=1
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LDFLAGS := -noixemul
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PORT_C_SRCS := $(wildcard $(SRC_DIR)/amiga/*.c)
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PORT_S_SRCS := $(wildcard $(SRC_DIR)/amiga/*.s)
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SHARED_S := $(wildcard $(SRC_68K)/*.s)
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# Sprite codegen: the Amiga-planar emitter (spriteEmitPlanar68k.c) and the
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# planar sprite interpreter (planarSprite.c) live in src/m68k/ and build into
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# obj/68k/; only the CPU-independent dispatch stays in src/codegen.
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CODEGEN_DIR := $(REPO_DIR)/src/codegen
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LIB_OBJS := \
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$(patsubst $(SRC_CORE)/%.c,$(BUILD)/obj/core/%.o,$(CORE_C_SRCS_NO_MIX)) \
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$(patsubst $(SRC_DIR)/generic/%.c,$(BUILD)/obj/generic/%.o,$(GENERIC_C_SRCS)) \
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$(patsubst $(SRC_DIR)/amiga/%.c,$(BUILD)/obj/port/%.o,$(PORT_C_SRCS)) \
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$(patsubst $(SRC_DIR)/amiga/%.s,$(BUILD)/obj/port/%.o,$(PORT_S_SRCS)) \
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$(patsubst $(SRC_68K)/%.s,$(BUILD)/obj/68k/%.o,$(SHARED_S)) \
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$(BUILD)/obj/port/ptplayer.o \
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$(BUILD)/obj/68k/spriteEmitPlanar68k.o \
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$(BUILD)/obj/68k/planarHash.o \
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$(BUILD)/obj/68k/planarIndexed.o \
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$(BUILD)/obj/68k/planarSprite.o \
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$(BUILD)/obj/68k/spriteC2p.o \
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$(BUILD)/obj/68k/planarTileLayer.o \
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$(BUILD)/obj/codegen/spriteCompile.o \
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$(BUILD)/obj/codegen/spriteStage.o
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LIB := $(LIBDIR)/libjoey.a
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$(BUILD)/obj/core/%.o: $(SRC_CORE)/%.c
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@mkdir -p $(dir $@)
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$(AMIGA_CC) $(CFLAGS) -c $< -o $@
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$(BUILD)/obj/generic/%.o: $(SRC_DIR)/generic/%.c
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@mkdir -p $(dir $@)
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$(AMIGA_CC) $(CFLAGS) -c $< -o $@
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$(BUILD)/obj/port/%.o: $(SRC_DIR)/amiga/%.c
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@mkdir -p $(dir $@)
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$(AMIGA_CC) $(CFLAGS) -c $< -o $@
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# Hand-written 68k assembly: GAS syntax, fed through the gcc driver
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# so the bundled m68k-amigaos-as (binutils) does the work. It exports every
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# .equ and .set as a global absolute symbol (in a hunk object), where every
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# other port's assembler keeps them local; they would be in every program's
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# link, sfxMix.s's loop counter "sum" among them, so each object's are made
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# local again.
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AMIGA_NM := $(dir $(AMIGA_CC))m68k-amigaos-nm
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AMIGA_OBJCOPY := $(dir $(AMIGA_CC))m68k-amigaos-objcopy
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amigaAbsLocal = $(AMIGA_OBJCOPY) $$($(AMIGA_NM) $(1) | awk '$$2 == "A" { print "-L", $$3 }') $(1)
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$(BUILD)/obj/port/%.o: $(SRC_DIR)/amiga/%.s
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@mkdir -p $(dir $@)
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$(AMIGA_CC) $(CFLAGS) -c $< -o $@
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$(call amigaAbsLocal,$@)
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# PTPlayer is third-party Devpac/vasm-syntax assembly with no
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# maintained GAS port; vasm is invoked only here.
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$(BUILD)/obj/port/ptplayer.o: $(PTPLAYER_DIR)/ptplayer.asm
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@mkdir -p $(dir $@)
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$(AMIGA_AS) $(PTPLAYER_ASFLAGS) $< -o $@
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$(BUILD)/obj/codegen/%.o: $(CODEGEN_DIR)/%.c
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@mkdir -p $(dir $@)
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$(AMIGA_CC) $(CFLAGS) -I$(CODEGEN_DIR) -c $< -o $@
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# gcc-amigaos spells a C symbol with a leading underscore; the shared asm
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# that names one says it through C_OP (src/m68k/m68kCSym.inc, which the
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# assembler finds through -I: the gcc driver hands it no include path).
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$(BUILD)/obj/68k/%.o: $(SRC_68K)/%.s
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@mkdir -p $(dir $@)
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$(AMIGA_CC) $(CFLAGS) -Wa,--defsym,JL_ASM_USCORE=1 -Wa,-I$(SRC_68K) -c $< -o $@
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$(call amigaAbsLocal,$@)
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# 68k sprite emitters (spriteEmitPlanar68k.c) live in src/m68k/;
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# -I$(CODEGEN_DIR) lets them resolve spriteEmitter.h.
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$(BUILD)/obj/68k/%.o: $(SRC_68K)/%.c
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@mkdir -p $(dir $@)
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$(AMIGA_CC) $(CFLAGS) -I$(CODEGEN_DIR) -c $< -o $@
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# Archived from scratch, so the members -- and every program's layout --
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# follow LIB_OBJS rather than the order earlier builds added them in.
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$(LIB): $(LIB_OBJS)
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@mkdir -p $(dir $@)
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rm -f $@
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$(AMIGA_AR) rcs $@ $^
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# Pull in per-object header-dependency files generated by gcc -MMD/-MP.
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# Without this, editing a header (e.g. surfaceInternal.h) doesn't rebuild
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# the .c files that include it, leaving a frankenstein binary where
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# different TUs see different struct layouts.
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-include $(LIB_OBJS:.o=.d)
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# ---- programs -----------------------------------------------------------------
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# A program is a mixed-case Name with no extension (an AmigaDOS name), in bin/
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# or in its own bin/Name/ with its DATA beside it, and Name.info beside it,
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# its Workbench icon; joey-run boots the folder as the JOEYLIB hard drive.
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PROGRAM_EXT :=
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PROGRAM_FOLDERS := yes
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programNameRule = $(call capFirst,$(call lc,$(1)))
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programTarget = $(call programBin,$(1)) $(call programBin,$(1)).info
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# The stack a program started from its icon gets, in bytes: what the gates'
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# shells give every program (stack 32768).
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AMIGA_ICON_STACK := 32768
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# One program, $(1) its id: compiled and linked in one step with the library.
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# gcc's -MMD leaves Name.d beside it, for header edits.
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define programRules
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$(call programBin,$(1)): $(call programVar,$(1),SRCS) $(LIB)
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@mkdir -p $$(dir $$@)
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$(AMIGA_CC) $(CFLAGS) $(call programVar,$(1),CFLAGS) $(call programVar,$(1),SRCS) $(LIB) -o $$@ $(LDFLAGS) $(call programVar,$(1),LDFLAGS)
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-include $(call programBin,$(1)).d
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$(call programBin,$(1)).info: $(call programIcon,$(1)) $(ICON_BAKE)
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@mkdir -p $$(dir $$@)
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$(ICON_BAKE) info $$< $$@ $(AMIGA_ICON_STACK)
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endef
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# ---- JoeyLib's own build: its examples ------------------------------------------
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ifndef JOEY_PROJECT
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include $(REPO_DIR)/make/examples.mk
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include $(REPO_DIR)/make/programs.mk
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.DEFAULT_GOAL := all
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.PHONY: all amiga clean-amiga clean
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all amiga: $(LIB) programs
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clean-amiga:
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rm -rf $(BUILD)
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# `clean` as an alias for `clean-amiga`. Without it a bare
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# `make -f make/amiga.mk clean` FAILS -- and with stderr discarded that
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# looks like success while leaving stale objects the next build links.
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clean: clean-amiga
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endif
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# UBER with its probe rows, for the display gate (scripts/verify-amiga-display.sh).
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.PHONY: amiga-uberprob
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amiga-uberprob: $(call programTarget,UBERPROB)
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