Adds a simple program which starts at 1 GB.
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4 changed files with 102 additions and 0 deletions
61
prototypes/program0/Makefile
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61
prototypes/program0/Makefile
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AS=gcc
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CC=gcc
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CXX=g++
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LD=ld
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FLAGS = -mno-sse -DIDT_DISPATCH=$(IDT_DISPATCH) -ffreestanding -m32 -Werror -Wall -iquote include -iquote lists -O3 -g
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ASFLAGS = $(FLAGS)
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CFLAGS = $(FLAGS)
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CXXFLAGS = $(FLAGS) -std=c++14 -fno-rtti -fno-exceptions -fno-leading-underscore -fno-use-cxa-atexit -nostdlib -fno-builtin
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ARTIFACT = program0.bin
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SRCS = $(shell find -regextype egrep -regex '.*/.*\.(cpp|S|c)')
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OBJS = $(addsuffix .o, $(notdir $(basename $(SRCS))))
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LIBGCC = $(shell gcc -m32 -print-libgcc-file-name)
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all: $(ARTIFACT)
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$(ARTIFACT): $(OBJS)
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$(LD) -melf_i386 -Tlinker.ld -o $(ARTIFACT) $(addprefix obj/, $^) $(LIBGCC)
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%.o: %.cpp
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$(CXX) $(CXXFLAGS) -c -o obj/$@ $<
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%.o: %.c
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$(CC) $(ASFLAGS) -c -o obj/$@ $<
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%.o: %.S
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$(AS) $(CFLAGS) -c -o obj/$@ $<
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%.o: src/%.cpp
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$(CXX) $(CXXFLAGS) -c -o obj/$@ $<
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%.o: src/%.c
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$(CC) $(ASFLAGS) -c -o obj/$@ $<
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%.o: src/%.S
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$(AS) $(CFLAGS) -c -o obj/$@ $<
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# Linux/Multiboot boot specific:
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# -kernel bzImage use 'bzImage' as kernel image
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# -append cmdline use 'cmdline' as kernel command line
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# -initrd file use 'file' as initial ram disk
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# -dtb file use 'file' as device tree image
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run:
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qemu-system-i386 \
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-kernel kernel-base.ker \
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-m 64 \
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-d cpu_reset,int \
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-no-reboot \
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-no-shutdown \
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-serial stdio
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bnr: kernel-base.ker run
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deploy: kernel-base.ker
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cp $(ARTIFACT) /srv/tftp/$(ARTIFACT)
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30
prototypes/program0/linker.ld
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30
prototypes/program0/linker.ld
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ENTRY(_start)
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OUTPUT_FORMAT(binary)
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OUTPUT_ARCH(i386:i386)
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SECTIONS
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{
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. = 0x40000000;
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.text : {
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*(.text)
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}
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.data ALIGN(4096) : {
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start_ctors = .;
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KEEP(*( .init_array ));
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KEEP(*(SORT_BY_INIT_PRIORITY( .init_array.* )));
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end_ctors = .;
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start_dtors = .;
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KEEP(*( .fini_array ));
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end_dtors = .;
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*(.data)
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}
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.rodata ALIGN(4096) : {
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*(.rodata)
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}
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.bss ALIGN(4096) : {
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*(.bss)
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}
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. = ALIGN(4096);
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}
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11
prototypes/program0/program.c
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11
prototypes/program0/program.c
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#include <inttypes.h>
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uint16_t *video = (uint16_t*)0xB8000;
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void _start()
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{
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for(int i = 0; i < 256; i++) {
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video[i] = 0xF000 | i;
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}
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while(1);
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}
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BIN
prototypes/program0/program0.bin
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BIN
prototypes/program0/program0.bin
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Binary file not shown.
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