add 2019 day 1

.gitignore

@@ -0,0 +1,4 @@
+*.elf
+*.o
+*.bin
+*.d

2019/day1/input.txt

@@ -0,0 +1,100 @@
+98578
+105016
+93022
+144768
+80394
+112379
+121119
+94660
+126363
+112893
+102603
+93967
+77268
+103649
+70132
+142499
+143711
+140554
+104725
+84738
+70613
+108746
+111488
+89944
+67984
+59613
+80035
+69350
+134001
+62115
+104688
+143033
+109712
+96194
+90353
+96899
+131267
+143909
+96649
+138803
+140620
+73931
+118851
+58910
+92205
+132615
+83308
+73807
+146895
+142622
+56234
+126672
+79278
+111589
+57593
+80856
+76261
+89204
+110871
+74731
+68654
+103148
+89935
+58596
+89510
+101248
+86137
+56176
+78679
+128987
+73114
+143844
+69805
+54820
+99223
+119668
+79449
+98890
+64512
+104946
+126345
+128346
+112212
+135582
+108214
+111077
+75745
+125934
+52956
+102036
+108452
+129232
+97091
+106975
+92156
+145892
+66680
+88452
+75081
+102811

2019/day1/part1_part2.s

@@ -0,0 +1,124 @@
+	.global _start
+_start:
+	/* part1 */
+	mova	_part_fuel,r0
+	mov	r0,r12
+	mova	_accumulate,r0
+	jsr	@r0
+	nop
+	mov	r10,r11	/* r11: part1 answer */
+
+	/* part2 */
+	mova	_part2_fuel,r0
+	mov	r0,r12
+	mova	_accumulate,r0
+	jsr	@r0
+	nop		/* r10: part2 answer */
+
+forever:
+	bra	forever
+	nop
+
+	/* r12: fuel function */
+	.align 4
+_accumulate:
+	mov.l	start,r8
+	mov.l	end,r9
+	mov	#0,r10  /* r10: sum */
+	sts	pr,r15	/* save PR */
+accumulator_loop:
+	cmp/hs	r9,r8  /* Rn ≥ Rm (unsigned) */
+	bt	accumulator_rts
+	mova	_parse_int,r0
+	jsr	@r0
+	nop
+
+	jsr	@r12
+	nop
+	bra	accumulator_loop
+	add	r1,r10
+
+accumulator_rts:
+	lds	r15,pr	/* restore PR */
+	rts
+	nop
+
+	.align 4
+start:	.long _binary_2019_day1_input_txt_start
+end:	.long _binary_2019_day1_input_txt_end
+
+	.global _parse_int
+	.align 4
+_parse_int:
+	/* r0 = pointer to text ; r1 = number */
+	mov	#0,r1	/* r1: accumulated number */
+parse_int_loop:
+	mov.b 	@r8+,r2
+	add	#-48,r2 /* ascii '0' */
+	cmp/pz	r2	/* Rn >= 0 (signed)  (r2 >= 0 ) */
+	bf/s	parse_int_rts
+	mov	#9,r4	/* const 9 */
+	cmp/ge	r2,r4	/* Rn >= Rm (signed) ( 9 >= r2) */
+	bf/s	parse_int_rts
+	mov	#10,r4	/* const 10 */
+	mulu.w	r1,r4
+	sts	macl,r1
+	bra	parse_int_loop
+	add	r2,r1
+parse_int_rts:
+	rts
+	nop
+
+	.global _part2_fuel
+	.align 4
+_part2_fuel:
+	/* r1 = mass */
+	sts	pr,r13	/* save PR */
+	mov	#0,r5   /* r5: fuel sum */
+
+part2_fuel_for_fuel:
+	mova 	_part_fuel,r0
+	jsr	@r0
+	nop
+
+	cmp/pl	r1	/* signed Rn > 0 */
+	bf	part2_rts
+	bra 	part2_fuel_for_fuel
+	add	r1,r5
+
+part2_rts:
+	lds	r13,pr	/* restore PR */
+	rts
+	mov	r5,r1
+
+	.global _part_fuel
+	.align 4
+_part_fuel:
+	/* r1 = mass */
+	sts	pr,r14	/* save PR */
+	mova	_div32_16,r0
+	jsr	@r0
+	mov	#3,r0
+	lds	r14,pr	/* restore PR */
+	rts
+	add	#-2,r1
+
+
+	.global _div32_16
+	.align 4
+_div32_16:
+	/* r1 (32 bits) ÷ r0 (16 bits) */
+	shll16	r0
+	cmp/hs	r0,r1
+	bt	over_div
+	div0u
+.rept 16
+	div1	r0,r1
+.endr
+	rotcl	r1
+	rts
+	extu.w	r1,r1
+over_div:
+	bra	over_div
+	nop
+	/* r1 = quotient */

2019/day1/sample.txt

@@ -0,0 +1,4 @@
+12
+14
+1969
+100756

2019/deps.mk

@@ -0,0 +1,2 @@
+2019/day1/part1.elf: 2019/day1/part1_part2.o 2019/day1/sample.txt.o 2019/day1/input.txt.o
+	$(DEFAULT_LINK)

2023/day1/day1.s

@@ -6,8 +6,10 @@ _start:
 parse_lines:
 
 _pointers:
+	/* mova sample_input_start,r0 */
 	mova input_start,r0
 	mov r0,r14                 /* r14: pointer to input start */
+	/* mova sample_input_end,r0 */
 	mov.l input_end,r0
 	mov r0,r15	           /* r15: pointer to input end */
 

Makefile

@@ -0,0 +1,77 @@
+TARGET ?= sh4-unknown-linux-gnu-
+AS=$(TARGET)as
+LD=$(TARGET)ld
+CC=$(TARGET)gcc
+OBJCOPY=$(TARGET)objcopy
+ENDIAN ?= little
+ifeq ($(ENDIAN),little)
+AS_ENDIAN = --little
+LD_ENDIAN = -EL
+CC_ENDIAN = -ml
+OBJ_ENDIAN = -O elf32-sh-linux
+else
+AS_ENDIAN = --big
+LD_ENDIAN = -EB
+CC_ENDIAN = -mb
+OBJ_ENDIAN = -O elf32-sh
+endif
+
+OPT = -Og
+
+DEBUG = -g -gdwarf-4
+AARCH = --isa=sh4
+CARCH = -m4-single-only
+OBJARCH = -B sh4
+CFLAGS += -Wall -Werror -Wfatal-errors
+CFLAGS += -falign-functions=4 -ffunction-sections -fdata-sections -fshort-enums
+CFLAGS += -ffreestanding -nostdlib
+DEPFLAGS = -MMD -MP
+LDFLAGS += --no-warn-execstack
+
+%.o: %.c
+	$(CC) $(CARCH) $(CC_ENDIAN) $(CFLAGS) $(OPT) $(DEBUG) $(DEPFLAGS) -MF ${<}.d -c $< -o $@
+
+%.o: %.s
+	$(AS) $(AARCH) $(AS_ENDIAN) $(DEBUG) $< -o $@
+
+define DEFAULT_LINK
+	$(LD) $(LD_ENDIAN) $(LDFLAGS) \
+		--section-start=.text=0x0 \
+		--entry=_start $^ -o $@
+endef
+
+define BUILD_BINARY_O
+	$(OBJCOPY) \
+		-I binary $(OBJARCH) $(OBJ_ENDIAN) \
+		$< $@
+endef
+
+%.txt.o: %.txt
+	$(BUILD_BINARY_O)
+
+%.elf: %.o
+	$(DEFAULT_LINK)
+
+%.bin: %.elf
+	$(OBJCOPY) -O binary --remove-section=.stack $< $@
+
+clean:
+	find -P \
+		-regextype posix-egrep \
+		-regex '.*\.(o|bin|elf|d)$$' \
+		-exec rm {} \;
+
+.SUFFIXES:
+.INTERMEDIATE:
+.SECONDARY:
+.PHONY: all clean
+
+%: RCS/%,v
+%: RCS/%
+%: %,v
+%: s.%
+%: SCCS/s.%
+
+MAKEFLAGS += --no-builtin-rules
+
+include 2019/deps.mk

gdb.script

@@ -1,5 +1,6 @@
 target extended-remote localhost:1234
 tui enable
+tui layout src
 tui layout regs
 tui focus cmd
 tui reg all