forked from Bananymous/banan-os
Initial commit. We have a booting kernel
This commit is contained in:
commit
e6b4866ab0
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@ -0,0 +1,3 @@
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|||
*.iso
|
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isodir
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||||
sysroot
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@ -0,0 +1,7 @@
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|||
#!/bin/sh
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||||
set -e
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||||
. ./headers.sh
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||||
|
||||
for PROJECT in $PROJECTS; do
|
||||
(cd $PROJECT && DESTDIR="$SYSROOT" $MAKE install)
|
||||
done
|
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@ -0,0 +1,11 @@
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|||
#!/bin/sh
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||||
set -e
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||||
. ./config.sh
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||||
|
||||
for PROJECT in $PROJECTS; do
|
||||
(cd $PROJECT && $MAKE clean)
|
||||
done
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||||
|
||||
rm -rf sysroot
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||||
rm -rf isodir
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||||
rm -rf banan-os.iso
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@ -0,0 +1,28 @@
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|||
SYSTEM_HEADER_PROJECTS="libc kernel"
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PROJECTS="libc kernel"
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||||
|
||||
export MAKE=${MAKE:-make}
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||||
export HOST=${HOST:-$(./default-host.sh)}
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||||
|
||||
export AR=${HOST}-ar
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export AS=${HOST}-as
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||||
export CC=${HOST}-gcc
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||||
|
||||
export PREFIX=/usr
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export EXEC_PREFIX=$PREFIX
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export BOOTDIR=/boot
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export LIBDIR=$EXEC_PREFIX/lib
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||||
export INCLUDEDIR=$PREFIX/include
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||||
|
||||
export CFLAGS='-O2 -g'
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export CPPFLAGS=''
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||||
|
||||
# Configure the cross-compiler to use the desired system root.
|
||||
export SYSROOT="$(pwd)/sysroot"
|
||||
export CC="$CC --sysroot=$SYSROOT"
|
||||
|
||||
# Work around that the -elf gcc targets doesn't have a system include directory
|
||||
# because it was configured with --without-headers rather than --with-sysroot.
|
||||
if echo "$HOST" | grep -Eq -- '-elf($|-)'; then
|
||||
export CC="$CC -isystem=$INCLUDEDIR"
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||||
fi
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@ -0,0 +1,2 @@
|
|||
#!/bin/sh
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||||
echo i686-elf
|
|
@ -0,0 +1,9 @@
|
|||
#!/bin/sh
|
||||
set -e
|
||||
. ./config.sh
|
||||
|
||||
mkdir -p "$SYSROOT"
|
||||
|
||||
for PROJECT in $SYSTEM_HEADER_PROJECTS; do
|
||||
(cd $PROJECT && DESTDIR="$SYSROOT" $MAKE install-headers)
|
||||
done
|
|
@ -0,0 +1,15 @@
|
|||
#!/bin/sh
|
||||
set -e
|
||||
. ./build.sh
|
||||
|
||||
mkdir -p isodir
|
||||
mkdir -p isodir/boot
|
||||
mkdir -p isodir/boot/grub
|
||||
|
||||
cp sysroot/boot/banan-os.kernel isodir/boot/banan-os.kernel
|
||||
cat > isodir/boot/grub/grub.cfg << EOF
|
||||
menuentry "banan-os" {
|
||||
multiboot /boot/banan-os.kernel
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||||
}
|
||||
EOF
|
||||
grub-mkrescue -o banan-os.iso isodir
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@ -0,0 +1,3 @@
|
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*.d
|
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*.kernel
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*.o
|
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@ -0,0 +1,83 @@
|
|||
DEFAULT_HOST!=../default-host.sh
|
||||
HOST?=DEFAULT_HOST
|
||||
HOSTARCH!=../target-triplet-to-arch.sh $(HOST)
|
||||
|
||||
CFLAGS?=-O2 -g
|
||||
CPPFLAGS?=
|
||||
LDFLAGS?=
|
||||
LIBS?=
|
||||
|
||||
DESTDIR?=
|
||||
PREFIX?=/usr/local
|
||||
EXEC_PREFIX?=$(PREFIX)
|
||||
BOOTDIR?=$(EXEC_PREFIX)/boot
|
||||
INCLUDEDIR?=$(PREFIX)/include
|
||||
|
||||
CFLAGS:=$(CFLAGS) -ffreestanding -Wall -Wextra
|
||||
CPPFLAGS:=$(CPPFLAGS) -D__is_kernel -Iinclude
|
||||
LDFLAGS:=$(LDFLAGS)
|
||||
LIBS:=$(LIBS) -nostdlib -lk -lgcc
|
||||
|
||||
ARCHDIR=arch/$(HOSTARCH)
|
||||
|
||||
include $(ARCHDIR)/make.config
|
||||
|
||||
CFLAGS:=$(CFLAGS) $(KERNEL_ARCH_CFLAGS)
|
||||
CPPFLAGS:=$(CPPFLAGS) $(KERNEL_ARCH_CPPFLAGS)
|
||||
LDFLAGS:=$(LDFLAGS) $(KERNEL_ARCH_LDFLAGS)
|
||||
LIBS:=$(LIBS) $(KERNEL_ARCH_LIBS)
|
||||
|
||||
KERNEL_OBJS=\
|
||||
$(KERNEL_ARCH_OBJS) \
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||||
kernel/kernel.o \
|
||||
|
||||
OBJS=\
|
||||
$(ARCHDIR)/crti.o \
|
||||
$(ARCHDIR)/crtbegin.o \
|
||||
$(KERNEL_OBJS) \
|
||||
$(ARCHDIR)/crtend.o \
|
||||
$(ARCHDIR)/crtn.o \
|
||||
|
||||
LINK_LIST=\
|
||||
$(LDFLAGS) \
|
||||
$(ARCHDIR)/crti.o \
|
||||
$(ARCHDIR)/crtbegin.o \
|
||||
$(KERNEL_OBJS) \
|
||||
$(LIBS) \
|
||||
$(ARCHDIR)/crtend.o \
|
||||
$(ARCHDIR)/crtn.o \
|
||||
|
||||
.PHONY: all clean install install-headers install-kernel
|
||||
.SUFFIXES: .o .c .cpp .S
|
||||
|
||||
all: banan-os.kernel
|
||||
|
||||
banan-os.kernel: $(OBJS) $(ARCHDIR)/linker.ld
|
||||
$(CC) -T $(ARCHDIR)/linker.ld -o $@ $(CFLAGS) $(LINK_LIST)
|
||||
grub-file --is-x86-multiboot banan-os.kernel
|
||||
|
||||
$(ARCHDIR)/crtbegin.o $(ARCHDIR)/crtend.o:
|
||||
OBJ=`$(CC) $(CFLAGS) $(LDFLAGS) -print-file-name=$(@F)` && cp "$$OBJ" $@
|
||||
|
||||
.c.o:
|
||||
$(CC) -MD -c $< -o $@ -std=gnu11 $(CFLAGS) $(CPPFLAGS)
|
||||
|
||||
.S.o:
|
||||
$(CC) -MD -c $< -o $@ $(CFLAGS) $(CPPFLAGS)
|
||||
|
||||
clean:
|
||||
rm -f banan-os.kernel
|
||||
rm -f $(OBJS) *.o */*.o */*/*.o
|
||||
rm -f $(OBJS:.o=.d) *.d */*.d */*/*.d
|
||||
|
||||
install: install-headers install-kernel
|
||||
|
||||
install-headers:
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||||
mkdir -p $(DESTDIR)$(INCLUDEDIR)
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||||
cp -R --preserve=timestamps include/. $(DESTDIR)$(INCLUDEDIR)/.
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||||
|
||||
install-kernel: banan-os.kernel
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mkdir -p $(DESTDIR)$(BOOTDIR)
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cp banan-os.kernel $(DESTDIR)$(BOOTDIR)
|
||||
|
||||
-include $(OBJS:.o=.d)
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|
@ -0,0 +1,38 @@
|
|||
/* Declare constants for the multiboot header. */
|
||||
.set ALIGN, 1<<0 /* align loaded modules on page boundaries */
|
||||
.set MEMINFO, 1<<1 /* provide memory map */
|
||||
.set MB_FLAGS, ALIGN | MEMINFO /* this is the Multiboot 'flag' field */
|
||||
.set MB_MAGIC, 0x1BADB002 /* 'magic number' lets bootloader find the header */
|
||||
.set MB_CHECKSUM, -(MB_MAGIC + MB_FLAGS) /* checksum of above, to prove we are multiboot */
|
||||
|
||||
/* Multiboot header */
|
||||
.section .multiboot
|
||||
.align 4
|
||||
.long MB_MAGIC
|
||||
.long MB_FLAGS
|
||||
.long MB_CHECKSUM
|
||||
|
||||
/* Create stack */
|
||||
.section .bss
|
||||
.align 16
|
||||
stack_bottom:
|
||||
.skip 16384 # 16 KiB
|
||||
stack_top:
|
||||
|
||||
/* Entrypoint */
|
||||
.section .text
|
||||
.global _start
|
||||
.type _start, @function
|
||||
_start:
|
||||
/* Setup stack */
|
||||
mov $stack_top, %esp
|
||||
|
||||
/* Call into C code */
|
||||
call kernel_main
|
||||
|
||||
/* Hang if kernel_main returns */
|
||||
cli
|
||||
1: hlt
|
||||
jmp 1b
|
||||
|
||||
.size _start, . - _start
|
|
@ -0,0 +1,16 @@
|
|||
/* x86 crti.s */
|
||||
.section .init
|
||||
.global _init
|
||||
.type _init, @function
|
||||
_init:
|
||||
push %ebp
|
||||
movl %esp, %ebp
|
||||
/* gcc will nicely put the contents of crtbegin.o's .init section here. */
|
||||
|
||||
.section .fini
|
||||
.global _fini
|
||||
.type _fini, @function
|
||||
_fini:
|
||||
push %ebp
|
||||
movl %esp, %ebp
|
||||
/* gcc will nicely put the contents of crtbegin.o's .fini section here. */
|
|
@ -0,0 +1,10 @@
|
|||
/* x86 crtn.s */
|
||||
.section .init
|
||||
/* gcc will nicely put the contents of crtend.o's .init section here. */
|
||||
popl %ebp
|
||||
ret
|
||||
|
||||
.section .fini
|
||||
/* gcc will nicely put the contents of crtend.o's .fini section here. */
|
||||
popl %ebp
|
||||
ret
|
|
@ -0,0 +1,28 @@
|
|||
ENTRY(_start)
|
||||
|
||||
SECTIONS
|
||||
{
|
||||
. = 1M;
|
||||
|
||||
.text BLOCK(4K) : ALIGN(4K)
|
||||
{
|
||||
*(.multiboot)
|
||||
*(.text)
|
||||
}
|
||||
|
||||
.rodata BLOCK(4K) : ALIGN(4K)
|
||||
{
|
||||
*(.rodata)
|
||||
}
|
||||
|
||||
.data BLOCK(4K) : ALIGN(4K)
|
||||
{
|
||||
*(.data)
|
||||
}
|
||||
|
||||
.bss BLOCK(4K) : ALIGN(4K)
|
||||
{
|
||||
*(COMMON)
|
||||
*(.bss)
|
||||
}
|
||||
}
|
|
@ -0,0 +1,8 @@
|
|||
KERNEL_ARCH_CFLAGS=
|
||||
KERNEL_ARCH_CPPFLAGS=
|
||||
KERNEL_ARCH_LDFLAGS=
|
||||
KERNEL_ARCH_LIBS=
|
||||
|
||||
KERNEL_ARCH_OBJS=\
|
||||
$(ARCHDIR)/boot.o \
|
||||
$(ARCHDIR)/tty.o \
|
|
@ -0,0 +1,103 @@
|
|||
#include <kernel/tty.h>
|
||||
|
||||
#include "vga.h"
|
||||
|
||||
#include <stdbool.h>
|
||||
#include <stddef.h>
|
||||
#include <stdint.h>
|
||||
|
||||
|
||||
static const size_t VGA_WIDTH = 80;
|
||||
static const size_t VGA_HEIGHT = 25;
|
||||
static uint16_t* const VGA_MEMORY = (uint16_t*)0xB8000;
|
||||
|
||||
static size_t terminal_row;
|
||||
static size_t terminal_col;
|
||||
static uint8_t terminal_color;
|
||||
static uint16_t* terminal_buffer;
|
||||
|
||||
void terminal_putentryat(unsigned char c, uint8_t color, size_t x, size_t y)
|
||||
{
|
||||
const size_t index = y * VGA_WIDTH + x;
|
||||
terminal_buffer[index] = vga_entry(c, color);
|
||||
}
|
||||
|
||||
void terminal_clear(void)
|
||||
{
|
||||
for (size_t y = 0; y < VGA_HEIGHT; y++)
|
||||
for (size_t x = 0; x < VGA_WIDTH; x++)
|
||||
terminal_putentryat(' ', terminal_color, x, y);
|
||||
}
|
||||
|
||||
void terminal_initialize(void)
|
||||
{
|
||||
terminal_row = 0;
|
||||
terminal_col = 0;
|
||||
terminal_color = vga_entry_color(VGA_COLOR_WHITE, VGA_COLOR_BLACK);
|
||||
terminal_buffer = VGA_MEMORY;
|
||||
terminal_clear();
|
||||
}
|
||||
|
||||
void terminal_setcolor(uint8_t color)
|
||||
{
|
||||
terminal_color = color;
|
||||
}
|
||||
|
||||
void terminal_scroll_line(size_t line)
|
||||
{
|
||||
for (size_t x = 0; x < VGA_WIDTH; x++)
|
||||
{
|
||||
const size_t index = line * VGA_WIDTH + x;
|
||||
terminal_buffer[index - VGA_WIDTH] = terminal_buffer[index];
|
||||
}
|
||||
}
|
||||
|
||||
void terminal_clear_line(size_t line)
|
||||
{
|
||||
for (size_t x = 0; x < VGA_WIDTH; x++)
|
||||
terminal_putentryat(' ', terminal_color, x, line);
|
||||
}
|
||||
|
||||
void terminal_putchar(char c)
|
||||
{
|
||||
if (c == '\n')
|
||||
{
|
||||
terminal_col = 0;
|
||||
terminal_row++;
|
||||
}
|
||||
else
|
||||
{
|
||||
terminal_putentryat(c, terminal_color, terminal_col, terminal_row);
|
||||
terminal_col++;
|
||||
}
|
||||
|
||||
if (terminal_col == VGA_WIDTH)
|
||||
{
|
||||
terminal_col = 0;
|
||||
terminal_row++;
|
||||
}
|
||||
|
||||
if (terminal_row == VGA_HEIGHT)
|
||||
{
|
||||
for (size_t line = 1; line < VGA_HEIGHT; line++)
|
||||
terminal_scroll_line(line);
|
||||
terminal_clear_line(VGA_HEIGHT - 1);
|
||||
|
||||
terminal_col = 0;
|
||||
terminal_row = VGA_HEIGHT - 1;
|
||||
}
|
||||
}
|
||||
|
||||
void terminal_write(const char* data, size_t size)
|
||||
{
|
||||
for (size_t i = 0; i < size; i++)
|
||||
terminal_putchar(data[i]);
|
||||
}
|
||||
|
||||
void terminal_writestring(const char* data)
|
||||
{
|
||||
size_t len = 0;
|
||||
while (data[len])
|
||||
len++;
|
||||
terminal_write(data, len);
|
||||
}
|
|
@ -0,0 +1,33 @@
|
|||
#pragma once
|
||||
|
||||
#include <stdint.h>
|
||||
|
||||
enum vga_color
|
||||
{
|
||||
VGA_COLOR_BLACK = 0,
|
||||
VGA_COLOR_BLUE = 1,
|
||||
VGA_COLOR_GREEN = 2,
|
||||
VGA_COLOR_CYAN = 3,
|
||||
VGA_COLOR_RED = 4,
|
||||
VGA_COLOR_MAGENTA = 5,
|
||||
VGA_COLOR_BROWN = 6,
|
||||
VGA_COLOR_LIGHT_GREY = 7,
|
||||
VGA_COLOR_DARK_GREY = 8,
|
||||
VGA_COLOR_LIGHT_BLUE = 9,
|
||||
VGA_COLOR_LIGHT_GREEN = 10,
|
||||
VGA_COLOR_LIGHT_CYAN = 11,
|
||||
VGA_COLOR_LIGHT_RED = 12,
|
||||
VGA_COLOR_LIGHT_MAGENTA = 13,
|
||||
VGA_COLOR_LIGHT_BROWN = 14,
|
||||
VGA_COLOR_WHITE = 15,
|
||||
};
|
||||
|
||||
static inline uint8_t vga_entry_color(enum vga_color fg, enum vga_color bg)
|
||||
{
|
||||
return fg | bg << 4;
|
||||
}
|
||||
|
||||
static inline uint16_t vga_entry(unsigned char uc, uint8_t color)
|
||||
{
|
||||
return (uint16_t) uc | (uint16_t) color << 8;
|
||||
}
|
|
@ -0,0 +1,8 @@
|
|||
#pragma once
|
||||
|
||||
#include <stddef.h>
|
||||
|
||||
void terminal_initialize(void);
|
||||
void terminal_putchar(char c);
|
||||
void terminal_write(const char* data, size_t size);
|
||||
void terminal_writestring(const char* data);
|
|
@ -0,0 +1,9 @@
|
|||
#include <kernel/tty.h>
|
||||
|
||||
#include <stdio.h>
|
||||
|
||||
void kernel_main()
|
||||
{
|
||||
terminal_initialize();
|
||||
printf("Hello from the kernel!\n");
|
||||
}
|
|
@ -0,0 +1,3 @@
|
|||
*.a
|
||||
*.d
|
||||
*.o
|
|
@ -0,0 +1,93 @@
|
|||
DEFAULT_HOST!=../default-host.sh
|
||||
HOST?=DEFAULT_HOST
|
||||
HOSTARCH!=../target-triplet-to-arch.sh $(HOST)
|
||||
|
||||
CFLAGS?=-O2 -g
|
||||
CPPFLAGS?=
|
||||
LDFLAGS?=
|
||||
LIBS?=
|
||||
|
||||
DESTDIR?=
|
||||
PREFIX?=/usr/local
|
||||
EXEC_PREFIX?=$(PREFIX)
|
||||
INCLUDEDIR?=$(PREFIX)/include
|
||||
LIBDIR?=$(EXEC_PREFIX)/lib
|
||||
|
||||
CFLAGS:=$(CFLAGS) -ffreestanding -Wall -Wextra
|
||||
CPPFLAGS:=$(CPPFLAGS) -D__is_libc -Iinclude
|
||||
LIBK_CFLAGS:=$(CFLAGS)
|
||||
LIBK_CPPFLAGS:=$(CPPFLAGS) -D__is_libk
|
||||
|
||||
ARCHDIR=arch/$(HOSTARCH)
|
||||
|
||||
include $(ARCHDIR)/make.config
|
||||
|
||||
CFLAGS:=$(CFLAGS) $(ARCH_CFLAGS)
|
||||
CPPFLAGS:=$(CPPFLAGS) $(ARCH_CPPFLAGS)
|
||||
LIBK_CFLAGS:=$(LIBK_CFLAGS) $(KERNEL_ARCH_CFLAGS)
|
||||
LIBK_CPPFLAGS:=$(LIBK_CPPFLAGS) $(KERNEL_ARCH_CPPFLAGS)
|
||||
|
||||
FREEOBJS=\
|
||||
$(ARCH_FREEOBJS) \
|
||||
stdio/printf.o \
|
||||
stdio/putchar.o \
|
||||
stdio/puts.o \
|
||||
stdlib/abort.o \
|
||||
string/memcmp.o \
|
||||
string/memcpy.o \
|
||||
string/memmove.o \
|
||||
string/memset.o \
|
||||
string/strlen.o \
|
||||
|
||||
HOSTEDOBJS=\
|
||||
$(ARCH_HOSTEDOBJS) \
|
||||
|
||||
OBJS=\
|
||||
$(FREEOBJS) \
|
||||
$(HOSTEDOBJS) \
|
||||
|
||||
LIBK_OBJS=$(FREEOBJS:.o=.libk.o)
|
||||
|
||||
#BINARIES=libc.a libk.a # Not ready for libc yet.
|
||||
BINARIES=libk.a
|
||||
|
||||
.PHONY: all clean install install-headers install-libs
|
||||
.SUFFIXES: .o .libk.o .c .S
|
||||
|
||||
all: $(BINARIES)
|
||||
|
||||
libc.a: $(OBJS)
|
||||
$(AR) rcs $@ $(OBJS)
|
||||
|
||||
libk.a: $(LIBK_OBJS)
|
||||
$(AR) rcs $@ $(LIBK_OBJS)
|
||||
|
||||
.c.o:
|
||||
$(CC) -MD -c $< -o $@ -std=gnu11 $(CFLAGS) $(CPPFLAGS)
|
||||
|
||||
.S.o:
|
||||
$(CC) -MD -c $< -o $@ $(CFLAGS) $(CPPFLAGS)
|
||||
|
||||
.c.libk.o:
|
||||
$(CC) -MD -c $< -o $@ -std=gnu11 $(LIBK_CFLAGS) $(LIBK_CPPFLAGS)
|
||||
|
||||
.S.libk.o:
|
||||
$(CC) -MD -c $< -o $@ $(LIBK_CFLAGS) $(LIBK_CPPFLAGS)
|
||||
|
||||
clean:
|
||||
rm -f $(BINARIES) *.a
|
||||
rm -f $(OBJS) $(LIBK_OBJS) *.o */*.o */*/*.o
|
||||
rm -f $(OBJS:.o=.d) $(LIBK_OBJS:.o=.d) *.d */*.d */*/*.d
|
||||
|
||||
install: install-headers install-libs
|
||||
|
||||
install-headers:
|
||||
mkdir -p $(DESTDIR)$(INCLUDEDIR)
|
||||
cp -R --preserve=timestamps include/. $(DESTDIR)$(INCLUDEDIR)/.
|
||||
|
||||
install-libs: $(BINARIES)
|
||||
mkdir -p $(DESTDIR)$(LIBDIR)
|
||||
cp $(BINARIES) $(DESTDIR)$(LIBDIR)
|
||||
|
||||
-include $(OBJS:.o=.d)
|
||||
-include $(LIBK_OBJS:.o=.d)
|
|
@ -0,0 +1,8 @@
|
|||
ARCH_CFLAGS=
|
||||
ARCH_CPPFLAGS=
|
||||
KERNEL_ARCH_CFLAGS=
|
||||
KERNEL_ARCH_CPPFLAGS=
|
||||
|
||||
ARCH_FREEOBJS=\
|
||||
|
||||
ARCH_HOSTEDOBJS=\
|
|
@ -0,0 +1,17 @@
|
|||
#pragma once
|
||||
|
||||
#include <sys/cdefs.h>
|
||||
|
||||
#define EOF (-1)
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
int printf(const char* __restrict, ...);
|
||||
int putchar(int);
|
||||
int puts(const char*);
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
|
@ -0,0 +1,14 @@
|
|||
#pragma once
|
||||
|
||||
#include <sys/cdefs.h>
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
__attribute__((__noreturn__))
|
||||
void abort(void);
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
|
@ -0,0 +1,18 @@
|
|||
#pragma once
|
||||
|
||||
#include <stddef.h>
|
||||
#include <sys/cdefs.h>
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
int memcmp(const void*, const void*, size_t);
|
||||
void* memcpy(void* __restrict, const void* __restrict, size_t);
|
||||
void* memmove(void*, const void*, size_t);
|
||||
void* memset(void*, int, size_t);
|
||||
size_t strlen(const char*);
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
|
@ -0,0 +1,3 @@
|
|||
#pragma once
|
||||
|
||||
#define __banan_libc 1
|
|
@ -0,0 +1,9 @@
|
|||
#include <stdio.h>
|
||||
|
||||
int printf(const char* restrict fmt, ...)
|
||||
{
|
||||
int len = 0;
|
||||
while (fmt[len])
|
||||
putchar(fmt[len++]);
|
||||
return len;
|
||||
}
|
|
@ -0,0 +1,15 @@
|
|||
#include <stdio.h>
|
||||
|
||||
#if defined(__is_libk)
|
||||
#include <kernel/tty.h>
|
||||
#endif
|
||||
|
||||
int putchar(int c)
|
||||
{
|
||||
#if defined(__is_libk)
|
||||
char ch = (char)c;
|
||||
terminal_write(&ch, sizeof(ch));
|
||||
#else
|
||||
#endif
|
||||
return c;
|
||||
}
|
|
@ -0,0 +1,6 @@
|
|||
#include <stdio.h>
|
||||
|
||||
int puts(const char* str)
|
||||
{
|
||||
return printf("%s\n", str);
|
||||
}
|
|
@ -0,0 +1,15 @@
|
|||
#include <stdlib.h>
|
||||
#include <stdio.h>
|
||||
|
||||
__attribute__((__noreturn__))
|
||||
void abort(void)
|
||||
{
|
||||
#if defined(__is_libk)
|
||||
printf("Kernel panic: abort()\n");
|
||||
asm volatile("hlt");
|
||||
#else
|
||||
printf("abort()\n");
|
||||
#endif
|
||||
while (1);
|
||||
__builtin_unreachable();
|
||||
}
|
|
@ -0,0 +1,17 @@
|
|||
#include <string.h>
|
||||
|
||||
int memcmp(const void* s1, const void* s2, size_t n)
|
||||
{
|
||||
const unsigned char* a = s1;
|
||||
const unsigned char* b = s2;
|
||||
|
||||
while (n--)
|
||||
{
|
||||
if (*a != *b)
|
||||
return *a - *b;
|
||||
a++;
|
||||
b++;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
|
@ -0,0 +1,10 @@
|
|||
#include <string.h>
|
||||
|
||||
void* memcpy(void* restrict destp, const void* restrict srcp, size_t n)
|
||||
{
|
||||
unsigned char* dest = (unsigned char*)destp;
|
||||
const unsigned char* src = (const unsigned char*)srcp;
|
||||
for (size_t i = 0; i < n; i++)
|
||||
dest[i] = src[i];
|
||||
return destp;
|
||||
}
|
|
@ -0,0 +1,20 @@
|
|||
#include <string.h>
|
||||
|
||||
void* memmove(void* destp, const void* srcp, size_t n)
|
||||
{
|
||||
unsigned char* dest = (unsigned char*)destp;
|
||||
const unsigned char* src = (const unsigned char*)srcp;
|
||||
|
||||
if (dest < src)
|
||||
{
|
||||
for (size_t i = 0; i < n; i++)
|
||||
dest[i] = src[i];
|
||||
}
|
||||
else
|
||||
{
|
||||
for (size_t i = 1; i <= n; i++)
|
||||
dest[n - i] = src[n - i];
|
||||
}
|
||||
|
||||
return destp;
|
||||
}
|
|
@ -0,0 +1,9 @@
|
|||
#include <string.h>
|
||||
|
||||
void* memset(void* s, int c, size_t n)
|
||||
{
|
||||
unsigned char* p = (unsigned char*)s;
|
||||
for (size_t i = 0; i < n; i++)
|
||||
p[i] = c;
|
||||
return s;
|
||||
}
|
|
@ -0,0 +1,9 @@
|
|||
#include <string.h>
|
||||
|
||||
size_t strlen(const char* str)
|
||||
{
|
||||
size_t len = 0;
|
||||
while (str[len])
|
||||
len++;
|
||||
return len;
|
||||
}
|
|
@ -0,0 +1,5 @@
|
|||
#!/bin/sh
|
||||
set -e
|
||||
. ./iso.sh
|
||||
|
||||
qemu-system-$(./target-triplet-to-arch.sh $HOST) -cdrom banan-os.iso
|
|
@ -0,0 +1,6 @@
|
|||
#!/bin/sh
|
||||
if echo "$1" | grep -Eq 'i[[:digit:]]86-'; then
|
||||
echo i386
|
||||
else
|
||||
echo "$1" | grep -Eo '^[[:alnum:]_]*'
|
||||
fi
|
Loading…
Reference in New Issue