Index: arch/ia32/Makefile.inc =================================================================== --- arch/ia32/Makefile.inc (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) +++ arch/ia32/Makefile.inc (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) @@ -0,0 +1,43 @@ +CC=gcc +AS=as +LD=ld + +DEFS:=-DARCH=$(ARCH) + +ifdef SMP +DEFS+=-D$(SMP) +endif + +ifdef HT +DEFS+=-D$(HT) +endif + +CPPFLAGS=$(DEFS) -nostdinc -I../include +CFLAGS=$(CPPFLAGS) -nostdlib -fno-builtin -fomit-frame-pointer -Wmissing-prototypes -Werror -O3 +LFLAGS=-M -no-check-sections -T ../arch/ia32/_link.ld + +arch_sources= \ + arch/context.s \ + arch/debug/panic.s \ + arch/cpuid.s \ + arch/delay.s \ + arch/asm.s \ + arch/smp/ap.S \ + arch/smp/apic.c \ + arch/smp/mp.c \ + arch/smp/atomic.S \ + arch/ia32.c \ + arch/interrupt.c \ + arch/pm.c \ + arch/userspace.c \ + arch/cpu/cpu.c \ + arch/mm/frame.c \ + arch/mm/page.c \ + arch/mm/tlb.c \ + arch/drivers/i8042.c \ + arch/drivers/i8254.c \ + arch/drivers/i8259.c \ + arch/drivers/ega.c \ + arch/boot/boot.S + + Index: arch/ia32/_link.ld =================================================================== --- arch/ia32/_link.ld (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) +++ arch/ia32/_link.ld (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) @@ -0,0 +1,44 @@ +/* + * i386 linker script + * + * kernel text + * kernel data + * + */ + +OUTPUT_FORMAT(binary) +ENTRY(kernel_image_start) + +SECTIONS { + .image 0x8000: AT (0x8000) { + ktext_start = .; + *(K_TEXT_START); + *(.text); + ktext_end = .; + + kdata_start = .; + *(K_DATA_START); + *(.data); /* initialized data */ + *(.rodata*); /* string literals */ + *(COMMON); /* global variables */ + *(.bss); /* uninitialized static variables */ + *(K_DATA_END); + kdata_end = .; + } + + . = ABSOLUTE(hardcoded_ktext_size); + .patch_1 : { + LONG(ktext_end - ktext_start); + } + + . = ABSOLUTE(hardcoded_kdata_size); + .patch_2 : { + LONG(kdata_end - kdata_start); + } + + . = ABSOLUTE(hardcoded_load_address); + .patch_3 : { + LONG(0x8000); + } + +} Index: arch/ia32/boot/Makefile =================================================================== --- arch/ia32/boot/Makefile (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) +++ arch/ia32/boot/Makefile (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) @@ -0,0 +1,18 @@ +.PHONY: nothing build clean + +nothing: + +build: boot.bin + dd if=boot.bin of=../../../src/image.bin bs=512 conv=sync + -cat ../../../src/kernel.bin >>../../../src/image.bin + +boot.bin: boot.o + ld -T boot.ld -entry _start_0x7c00 --oformat binary boot.o -o $@ + +boot.o: boot.S + gcc -E -DKERNEL_SIZE=$(KERNEL_SIZE) boot.S >boot.s + as boot.s -o $@ + rm boot.s + +clean: + -rm *.o *.bin Index: arch/ia32/boot/boot.S =================================================================== --- arch/ia32/boot/boot.S (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) +++ arch/ia32/boot/boot.S (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) @@ -0,0 +1,152 @@ +# +# Copyright (C) 2001-2004 Jakub Jermar +# All rights reserved. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# +# - Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# - Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# - The name of the author may not be used to endorse or promote products +# derived from this software without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR +# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES +# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. +# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, +# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF +# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +# + +# This is a very primitive boot.s + +# It assumes that the first sector of the kernel image is found +# on head 0, track 0, sector 2 of the first floppy drive (1440K). +# Next kernel sectors follow on disk sector 3, 4, ... +# + + +.text +.global _start_0x7c00 + +.code16 +_start_0x7c00: + xorw %ax,%ax # reset, %al will be used below + movw %ax,%dx # fd0, %dh and %dl will be used below + int $0x13 + jc stop_trying + + movb $2,%ah # read + incb %al # one sector + movb %ah,%cl # from disk sector 2 + movw %dx,%es + movw $0x8000,%bx # at %es:%bx + int $0x13 + jc stop_trying + + pushw $('.') + call echo_mark + add $2,%sp + + movw %dx,%ds + + # KERNEL_SIZE is passed from the outside to the preprocessor + movl $(KERNEL_SIZE),%edi + + shrl $9,%edi # number of sectors that kernel occupies (%edi div 512) + +read_next: + test %edi,%edi + jnz read_sectors + + movb $12,%al + movw $0x3f2,%dx + outb %al,%dx + + pushw $('$') + call echo_mark + add $2,%sp + + jmpl $0,$0x8000 + +read_sectors: + pushw $('.') + call echo_mark + add $2,%sp + + decl %edi + incw logical_sector + movw %es,%si + addw $0x20,%si + movw %si,%es + + movw logical_sector,%ax + divb sectors + + movb %ah,%cl + incb %cl # sector + + movb %al,%ch + shrb $1,%ch # track + + movb %al,%dh + andb $1,%dh # head + + movw $0x0201,%ax + int $0x13 + jnc read_next + + pushw $('R') + call echo_mark + add $2,%sp + + xorw %ax,%ax # try to reset + movw %ax,%dx # fd0 + int $0x13 + jnc read_next + +stop_trying: + pushw $('F') + call echo_mark + add $2,%sp + + cli + hlt + +CH=4 +echo_mark: + push %bp + movw %sp,%bp + pusha + + movw CH(%bp),%ax + movb $0xe,%ah + movb $7,%bl + int $0x10 + + popa + pop %bp + ret + +# current logical sector from the beginning of the disk +logical_sector: + .word 1 + +# number of sectors per track on 1440 floppy +sectors: + .byte 18 + + +# boot floppy signature +.org 0x1fe +boot_floppy_signature: + .byte 0x55 + .byte 0xaa Index: arch/ia32/boot/boot.ld =================================================================== --- arch/ia32/boot/boot.ld (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) +++ arch/ia32/boot/boot.ld (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) @@ -0,0 +1,3 @@ +SECTIONS { + .text 0x7c00 : AT (0x0) { *(.text) } +} Index: arch/ia32/include/ap.h =================================================================== --- arch/ia32/include/ap.h (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) +++ arch/ia32/include/ap.h (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) @@ -0,0 +1,34 @@ +/* + * Copyright (C) 2001-2004 Jakub Jermar + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * - The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef __AP_H__ +#define __AP_H__ + +extern void ap_boot(void); + +#endif Index: arch/ia32/include/apic.h =================================================================== --- arch/ia32/include/apic.h (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) +++ arch/ia32/include/apic.h (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) @@ -0,0 +1,128 @@ +/* + * Copyright (C) 2001-2004 Jakub Jermar + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * - The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef __APIC_H__ +#define __APIC_H__ + +#include +#include + +#define FIXED (0<<0) +#define LOPRI (1<<0) + +/* local APIC macros */ +#define IPI_INIT 0 +#define IPI_STARTUP 0 + +#define DLVRMODE_INIT (5<<8) +#define DLVRMODE_STUP (6<<8) +#define DESTMODE_PHYS (0<<11) +#define DESTMODE_LOGIC (1<<11) +#define LEVEL_ASSERT (1<<14) +#define LEVEL_DEASSERT (0<<14) +#define TRGRMODE_LEVEL (1<<15) +#define TRGRMODE_EDGE (0<<15) +#define SHORTHAND_DEST (0<<18) +#define SHORTHAND_INCL (2<<18) +#define SHORTHAND_EXCL (3<<18) + +#define SEND_PENDING (1<<12) + +/* Interrupt Command Register */ +#define ICRlo (0x300/sizeof(__u32)) +#define ICRhi (0x310/sizeof(__u32)) +#define ICRloClear ((0xff<<0)|(1<<13)|(3<<16)|(0xfff<<20)) +#define ICRhiClear (0xffffff<<0) + +/* End Of Interrupt */ +#define EOI (0x0b0/sizeof(__u32)) + +/* Error Status Register */ +#define ESR (0x280/sizeof(__u32)) +#define ESRClear ((0xffffff<<8)|(1<<4)) + +/* Task Priority Register */ +#define TPR (0x080/sizeof(__u32)) +#define TPRClear 0xffffff00 + +/* Spurious Vector Register */ +#define SVR (0x0f0/sizeof(__u32)) +#define SVRClear (~0x3f0) + +/* Time Divide Configuratio Register */ +#define TDCR (0x3e0/sizeof(__u32)) +#define TDCRClear (~0xb) + +/* Initial Count Register for Timer */ +#define ICRT (0x380/sizeof(__u32)) + +/* Current Count Register for Timer */ +#define CCRT (0x390/sizeof(__u32)) + +/* LVT */ +#define LVT_Tm (0x320/sizeof(__u32)) +#define LVT_LINT0 (0x350/sizeof(__u32)) +#define LVT_LINT1 (0x360/sizeof(__u32)) +#define LVT_Err (0x370/sizeof(__u32)) +#define LVT_PCINT (0x340/sizeof(__u32)) + +/* Local APIC ID Register */ +#define L_APIC_ID (0x020/sizeof(__u32)) +#define L_APIC_IDClear (~(0xf<<24)) + +/* IO APIC */ +#define IOREGSEL (0x00/sizeof(__u32)) +#define IOWIN (0x10/sizeof(__u32)) + +#define IOAPICID 0x00 +#define IOAPICVER 0x01 +#define IOAPICARB 0x02 +#define IOREDTBL 0x10 + + +extern volatile __u32 *l_apic; +extern volatile __u32 *io_apic; + +extern __u32 apic_id_mask; + +extern void apic_init(void); +extern void apic_spurious(__u8 n, __u32 stack[]); + +extern void l_apic_init(void); +extern void l_apic_eoi(void); +extern int l_apic_send_init_ipi(__u8 apicid); +extern void l_apic_debug(void); +extern void l_apic_timer_interrupt(__u8 n, __u32 stack[]); + +extern __u32 io_apic_read(__u8 address); +extern void io_apic_write(__u8 address , __u32 x); +extern void io_apic_change_ioredtbl(int signal, int dest, __u8 v, int flags); +extern void io_apic_disable_irqs(__u16 irqmask); +extern void io_apic_enable_irqs(__u16 irqmask); + +#endif Index: arch/ia32/include/asm.h =================================================================== --- arch/ia32/include/asm.h (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) +++ arch/ia32/include/asm.h (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) @@ -0,0 +1,61 @@ +/* + * Copyright (C) 2001-2004 Jakub Jermar + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * - The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef __i386_ASM_H__ +#define __i386_ASM_H__ + +#include +#include +#include +#include +#include + +extern __u32 interrupt_handler_size; + +extern void paging_on(void); +extern __address cpu_read_dba(void); +extern void cpu_write_dba(__address dba); + +extern __address cpu_read_cr2(void); + +extern void interrupt_handlers(void); + +extern __u8 inb(int port); +extern __u16 inw(int port); +extern __u32 inl(int port); + +extern void outb(int port, __u8 b); +extern void outw(int port, __u16 w); +extern void outl(int port, __u32 l); + +extern void enable_l_apic_in_msr(void); + +extern void halt_cpu(void); +extern void cpu_sleep(void); + +#endif Index: arch/ia32/include/atomic.h =================================================================== --- arch/ia32/include/atomic.h (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) +++ arch/ia32/include/atomic.h (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) @@ -0,0 +1,40 @@ +/* + * Copyright (C) 2001-2004 Jakub Jermar + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * - The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef __i386_ATOMIC_H__ +#define __i386_ATOMIC_H__ + +#include + +extern void atomic_inc(int *val); +extern void atomic_dec(int *val); + +extern int test_and_set(int *val); +extern void spinlock_arch(int *val); + +#endif Index: arch/ia32/include/context.h =================================================================== --- arch/ia32/include/context.h (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) +++ arch/ia32/include/context.h (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) @@ -0,0 +1,46 @@ +/* + * Copyright (C) 2001-2004 Jakub Jermar + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * - The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef __i386_CONTEXT_H__ +#define __i386_CONTEXT_H__ + +#include + +struct context { + __u32 sp; + __u32 pc; + __u32 ebx; + __u32 ecx; + __u32 edx; + __u32 esi; + __u32 edi; + __u32 ebp; + __u32 pri; +} __attribute__ ((packed)); + +#endif Index: arch/ia32/include/cpu.h =================================================================== --- arch/ia32/include/cpu.h (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) +++ arch/ia32/include/cpu.h (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) @@ -0,0 +1,44 @@ +/* + * Copyright (C) 2001-2004 Jakub Jermar + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * - The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef __i386_CPU_H__ +#define __i386_CPU_H__ + +#include +#include + +struct cpu_arch { + int vendor; + int family; + int model; + int stepping; + struct tss *tss; +}; + + +#endif Index: arch/ia32/include/cpuid.h =================================================================== --- arch/ia32/include/cpuid.h (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) +++ arch/ia32/include/cpuid.h (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) @@ -0,0 +1,46 @@ +/* + * Copyright (C) 2001-2004 Jakub Jermar + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * - The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef __CPUID_H__ +#define __CPUID_H__ + +#include + +struct cpu_info { + __u32 cpuid_eax; + __u32 cpuid_ebx; + __u32 cpuid_ecx; + __u32 cpuid_edx; +} __attribute__ ((packed)); + +extern int has_cpuid(void); +extern void cpuid(__u32 cmd, cpu_info_t *info); + +extern __u64 rdtsc(void); + +#endif Index: arch/ia32/include/ega.h =================================================================== --- arch/ia32/include/ega.h (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) +++ arch/ia32/include/ega.h (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) @@ -0,0 +1,43 @@ +/* + * Copyright (C) 2001-2004 Jakub Jermar + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * - The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef __EGA_H__ +#define __EGA_H__ + +#define VIDEORAM 0xb8000 +#define ROW 80 +#define ROWS 25 +#define SCREEN (ROW*ROWS) + +extern void ega_init(void); +extern void ega_putchar(char ch); + +static void ega_check_cursor(void); +static void ega_display_char(char ch); + +#endif Index: arch/ia32/include/i8042.h =================================================================== --- arch/ia32/include/i8042.h (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) +++ arch/ia32/include/i8042.h (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) @@ -0,0 +1,37 @@ +/* + * Copyright (C) 2001-2004 Jakub Jermar + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * - The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef __I8042_H__ +#define __I8042_H__ + +#include + +extern void i8042_init(void); +extern void i8042_interrupt(__u8 n, __u32 stack[]); + +#endif Index: arch/ia32/include/i8254.h =================================================================== --- arch/ia32/include/i8254.h (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) +++ arch/ia32/include/i8254.h (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) @@ -0,0 +1,39 @@ +/* + * Copyright (C) 2001-2004 Jakub Jermar + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * - The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef __i8254_H__ +#define __i8254_H__ + +#include + +extern void i8254_init(void); +extern void i8254_interrupt(__u8 n, __u32 stack[]); +extern void i8254_calibrate_delay_loop(void); +extern void i8254_normal_operation(void); + +#endif Index: arch/ia32/include/i8259.h =================================================================== --- arch/ia32/include/i8259.h (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) +++ arch/ia32/include/i8259.h (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) @@ -0,0 +1,51 @@ +/* + * Copyright (C) 2001-2004 Jakub Jermar + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * - The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef __I8259_H__ +#define __I8259_H__ + +#include +#include + +#define PIC_PIC0PORT1 0x20 +#define PIC_PIC0PORT2 0x21 +#define PIC_PIC1PORT1 0xa0 +#define PIC_PIC1PORT2 0xa1 + +#define PIC_NEEDICW4 (1<<0) +#define PIC_ICW1 (1<<4) + +#define PIC_PIC1ID 1 + +extern void i8259_init(void); +extern void pic_enable_irqs(__u16 irqmask); +extern void pic_disable_irqs(__u16 irqmask); +extern void pic_eoi(void); +extern void pic_spurious(__u8 n, __u32 stack[]); + +#endif Index: arch/ia32/include/interrupt.h =================================================================== --- arch/ia32/include/interrupt.h (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) +++ arch/ia32/include/interrupt.h (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) @@ -0,0 +1,84 @@ +/* + * Copyright (C) 2001-2004 Jakub Jermar + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * - The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef __INTERRUPT_H__ +#define __INTERRUPT_H__ + +#include +#include + +#define IVT_ITEMS IDT_ITEMS + +#define IVT_EXCBASE 0 +#define EXCLAST 31 + +#define IVT_IRQBASE (IVT_EXCBASE+EXCLAST+1) +#define IRQLAST 15 + +#define IVT_FREEBASE (IVT_IRQBASE+IRQLAST+1) + +#define IRQ_CLK 0 +#define IRQ_KBD 1 +#define IRQ_PIC1 2 +#define IRQ_PIC_SPUR 7 + +/* this one must have four least significant bits set to ones */ +#define VECTOR_APIC_SPUR (IVT_ITEMS-1) + +#if (((VECTOR_APIC_SPUR + 1)%16) || VECTOR_APIC_SPUR >= IVT_ITEMS) +#error Wrong definition of VECTOR_APIC_SPUR +#endif + +#define VECTOR_PIC_SPUR (IVT_IRQBASE+IRQ_PIC_SPUR) +#define VECTOR_CLK (IVT_IRQBASE+IRQ_CLK) +#define VECTOR_KBD (IVT_IRQBASE+IRQ_KBD) + +#define VECTOR_SYSCALL (IVT_FREEBASE+0) + +typedef void (* iroutine)(__u8 n, __u32 stack[]); + +extern iroutine ivt[IVT_ITEMS]; + +extern void (* disable_irqs_function)(__u16 irqmask); +extern void (* enable_irqs_function)(__u16 irqmask); +extern void (* eoi_function)(void); + +extern iroutine trap_register(__u8 n, iroutine f); + +extern void trap_dispatcher(__u8 n, __u32 stack[]); + +extern void null_interrupt(__u8 n, __u32 stack[]); +extern void gp_fault(__u8 n, __u32 stack[]); +extern void page_fault(__u8 n, __u32 stack[]); +extern void syscall(__u8 n, __u32 stack[]); + +extern void trap_virtual_enable_irqs(__u16 irqmask); +extern void trap_virtual_disable_irqs(__u16 irqmask); +extern void trap_virtual_eoi(void); + +#endif Index: arch/ia32/include/mm/frame.h =================================================================== --- arch/ia32/include/mm/frame.h (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) +++ arch/ia32/include/mm/frame.h (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) @@ -0,0 +1,40 @@ +/* + * Copyright (C) 2001-2004 Jakub Jermar + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * - The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef __i386_FRAME_H__ +#define __i386_FRAME_H__ + +#include + +#define FRAME_SIZE 4096 + +extern __address bootstrap_dba; + +extern void frame_arch_init(void); + +#endif Index: arch/ia32/include/mm/page.h =================================================================== --- arch/ia32/include/mm/page.h (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) +++ arch/ia32/include/mm/page.h (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) @@ -0,0 +1,55 @@ +/* + * Copyright (C) 2001-2004 Jakub Jermar + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * - The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef __i386_PAGE_H__ +#define __i386_PAGE_H__ + +#include +#include + +#define PAGE_SIZE FRAME_SIZE + +#define KA2PA(x) (x) +#define PA2KA(x) (x) + +struct page_specifier { + unsigned present : 1; + unsigned writeable : 1; + unsigned uaccessible : 1; + unsigned page_write_through : 1; + unsigned page_cache_disable : 1; + unsigned accessed : 1; + unsigned dirty : 1; + unsigned : 2; + unsigned avl : 3; + unsigned frame_address : 20; +} __attribute__ ((packed)); + +extern void page_arch_init(void); + +#endif Index: arch/ia32/include/mm/vm.h =================================================================== --- arch/ia32/include/mm/vm.h (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) +++ arch/ia32/include/mm/vm.h (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) @@ -0,0 +1,43 @@ +/* + * Copyright (C) 2005 Jakub Jermar + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * - The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef __i386_VM_H__ +#define __i386_VM_H__ + +#include + +#define KERNEL_ADDRESS_SPACE_START_ARCH (__address) 0x0 +#define KERNEL_ADDRESS_SPACE_END_ARCH (__address) 0x3fffffff +#define USER_ADDRESS_SPACE_START_ARCH (__address) 0x40000000 +#define USER_ADDRESS_SPACE_END_ARCH (__address) 0xffffffff + +#define UTEXT_ADDRESS_ARCH 0x40000000 +#define USTACK_ADDRESS_ARCH 0xfffff000 +#define UDATA_ADDRESS_ARCH 0x41000000 + +#endif Index: arch/ia32/include/mp.h =================================================================== --- arch/ia32/include/mp.h (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) +++ arch/ia32/include/mp.h (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) @@ -0,0 +1,122 @@ +/* + * Copyright (C) 2001-2004 Jakub Jermar + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * - The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef __MP_H__ +#define __MP_H__ + +#include +#include +#include +#include + +struct __mpfs { + __u32 signature; + struct __mpct *configuration_table; + __u8 length; + __u8 revision; + __u8 checksum; + __u8 config_type; + __u8 mpfib2; + __u8 mpfib3; + __u8 mpfib4; + __u8 mpfib5; +} __attribute__ ((packed)); + +struct __mpct { + __u32 signature; + __u16 base_table_length; + __u8 revision; + __u8 checksum; + __u8 oem_id[8]; + __u8 product_id[12]; + __u8 *oem_table; + __u16 oem_table_size; + __u16 entry_count; + __u32 *l_apic; + __u16 ext_table_length; + __u8 ext_table_checksum; + __u8 xxx; + __u8 base_table[0]; +} __attribute__ ((packed)); + +struct __processor_entry { + __u8 type; + __u8 l_apic_id; + __u8 l_apic_version; + __u8 cpu_flags; + __u8 cpu_signature[4]; + __u32 feature_flags; + __u32 xxx[2]; +} __attribute__ ((packed)); + +struct __bus_entry { + __u8 type; + __u8 bus_id; + __u8 bus_type[6]; +} __attribute__ ((packed)); + +struct __io_apic_entry { + __u8 type; + __u8 io_apic_id; + __u8 io_apic_version; + __u8 io_apic_flags; + __u32 *io_apic; +} __attribute__ ((packed)); + +struct __io_intr_entry { + __u8 type; + __u8 intr_type; + __u8 poel; + __u8 xxx; + __u8 src_bus_id; + __u8 src_bus_irq; + __u8 dst_io_apic_id; + __u8 dst_io_apic_pin; +} __attribute__ ((packed)); + +struct __l_intr_entry { + __u8 type; + __u8 intr_type; + __u8 poel; + __u8 xxx; + __u8 src_bus_id; + __u8 src_bus_irq; + __u8 dst_l_apic_id; + __u8 dst_l_apic_pin; +} __attribute__ ((packed)); + + +extern waitq_t ap_completion_wq; +extern waitq_t kmp_completion_wq; + +extern int mp_irq_to_pin(int irq); + +extern void mp_init(void); +extern void kmp(void *arg); + +#endif Index: arch/ia32/include/pm.h =================================================================== --- arch/ia32/include/pm.h (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) +++ arch/ia32/include/pm.h (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) @@ -0,0 +1,147 @@ +/* + * Copyright (C) 2001-2004 Jakub Jermar + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * - The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef __PM_H__ +#define __PM_H__ + +#include +#include +#include + +#define IDT_ITEMS 64 +#define GDT_ITEMS 6 + +#define NULL_DES 0 +#define KTEXT_DES 1 +#define KDATA_DES 2 +#define UTEXT_DES 3 +#define UDATA_DES 4 +#define TSS_DES 5 + +#define selector(des) ((des)<<3) + +#define PL_KERNEL 0 +#define PL_USER 3 + +#define AR_PRESENT (1<<7) +#define AR_DATA (2<<3) +#define AR_CODE (3<<3) +#define AR_WRITABLE (1<<1) +#define AR_INTERRUPT (0xe) +#define AR_TSS (0x9) + +#define DPL_KERNEL (PL_KERNEL<<5) +#define DPL_USER (PL_USER<<5) + +#define IO_MAP_BASE (104) + +struct ptr_16_32 { + __u16 limit; + __u32 base; +} __attribute__ ((packed)); + +struct descriptor { + unsigned limit_0_15: 16; + unsigned base_0_15: 16; + unsigned base_16_23: 8; + unsigned access: 8; + unsigned limit_16_19: 4; + unsigned available: 1; + unsigned unused: 1; + unsigned special: 1; + unsigned granularity : 1; + unsigned base_24_31: 8; +} __attribute__ ((packed)); + +struct idescriptor { + unsigned offset_0_15: 16; + unsigned selector: 16; + unsigned unused: 8; + unsigned access: 8; + unsigned offset_16_31: 16; +} __attribute__ ((packed)); + + +struct tss { + __u16 link; + unsigned : 16; + __u32 esp0; + __u16 ss0; + unsigned : 16; + __u32 esp1; + __u16 ss1; + unsigned : 16; + __u32 esp2; + __u16 ss2; + unsigned : 16; + __u32 cr3; + __u32 eip; + __u32 eflags; + __u32 eax; + __u32 ecx; + __u32 edx; + __u32 ebx; + __u32 esp; + __u32 ebp; + __u32 esi; + __u32 edi; + __u16 es; + unsigned : 16; + __u16 cs; + unsigned : 16; + __u16 ss; + unsigned : 16; + __u16 ds; + unsigned : 16; + __u16 fs; + unsigned : 16; + __u16 gs; + unsigned : 16; + __u16 ldtr; + unsigned : 16; + unsigned : 16; + __u16 io_map_base; +} __attribute__ ((packed)); + +extern struct ptr_16_32 gdtr; +extern struct tss *tss_p; + +extern struct descriptor gdt[]; +extern struct idescriptor idt[]; + +extern void pm_init(void); + +extern void gdt_setbase(struct descriptor *d, __address base); +extern void gdt_setlimit(struct descriptor *d, __address limit); + +extern void idt_init(void); +extern void idt_setoffset(struct idescriptor *d, __address offset); + +extern void tss_initialize(struct tss *t); + +#endif Index: arch/ia32/include/thread.h =================================================================== --- arch/ia32/include/thread.h (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) +++ arch/ia32/include/thread.h (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) @@ -0,0 +1,34 @@ +/* + * Copyright (C) 2001-2004 Jakub Jermar + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * - The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef __i386_THREAD_H__ +#define __i386_THREAD_H__ + +#define ARCH_THREAD_DATA + +#endif Index: arch/ia32/include/types.h =================================================================== --- arch/ia32/include/types.h (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) +++ arch/ia32/include/types.h (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) @@ -0,0 +1,45 @@ +/* + * Copyright (C) 2001-2004 Jakub Jermar + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * - The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef __TYPES_H__ +#define __TYPES_H__ + +#define NULL 0 + +typedef signed char __s8; + +typedef unsigned char __u8; +typedef unsigned short __u16; +typedef unsigned long __u32; +typedef long long __u64; + +typedef __u32 __address; + +typedef __u32 pri_t; + +#endif Index: arch/ia32/src/asm.s =================================================================== --- arch/ia32/src/asm.s (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) +++ arch/ia32/src/asm.s (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) @@ -0,0 +1,332 @@ +# +# Copyright (C) 2001-2004 Jakub Jermar +# All rights reserved. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# +# - Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# - Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# - The name of the author may not be used to endorse or promote products +# derived from this software without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR +# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES +# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. +# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, +# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF +# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +# + +# very low and hardware-level functions + +.text + +.global cpu_priority_high +.global cpu_priority_low +.global cpu_priority_restore +.global cpu_priority_read +.global cpu_halt +.global cpu_sleep +.global paging_on +.global cpu_read_dba +.global cpu_write_dba +.global cpu_read_cr2 +.global enable_l_apic_in_msr +.global interrupt_handlers +.global inb +.global inw +.global inl +.global outb +.global outw +.global outl +.global memcopy +.global memsetb +.global memsetw +.global memcmp + +# +# set priority level high +cpu_priority_high: + pushf + pop %eax + cli + ret + +# +# set priority level low +cpu_priority_low: + pushf + pop %eax + sti + ret + +# +# restore priority level +cpu_priority_restore: + push 4(%esp) + popf + ret + +# return raw priority level +cpu_priority_read: + pushf + pop %eax + ret + +cpu_halt: +cpu_sleep: + hlt + ret + +paging_on: + pushl %eax + movl %cr0,%eax + orl $(1<<31),%eax # paging on + andl $~((1<<30)|(1<<29)),%eax # clear Cache Disable and not Write Though + movl %eax,%cr0 + jmp 0f +0: + popl %eax + ret + +cpu_read_dba: + movl %cr3,%eax + ret + +cpu_write_dba: + pushl %eax + movl 8(%esp),%eax + movl %eax,%cr3 + popl %eax + ret + +cpu_read_cr2: + movl %cr2,%eax + ret + +enable_l_apic_in_msr: + pusha + + movl $0x1b, %ecx + rdmsr + orl $(1<<11),%eax + orl $(0xfee00000),%eax + wrmsr + + popa + ret + +.macro handler i n + push %ebp + movl %esp,%ebp + pusha + + # we must fill the data segment registers + movw $16,%ax + movw %ax,%ds + movw %ax,%es + + movl $(\i),%edi + pushl %ebp + addl $4,(%esp) + pushl %edi + call trap_dispatcher + addl $8,%esp + + popa + pop %ebp + + iret + + .if (\n-\i)-1 + handler "(\i+1)",\n + .endif +.endm + +# keep in sync with pm.h !!! +IDT_ITEMS=64 +interrupt_handlers: +h_start: + handler 0 64 +# handler 64 128 +# handler 128 192 +# handler 192 256 +h_end: + + +inb: + push %edx + xorl %eax,%eax + movl 8(%esp),%edx + inb %dx,%al + pop %edx + ret + +inw: + push %edx + xorl %eax,%eax + movl 8(%esp),%edx + inw %dx,%ax + pop %edx + ret + +inl: + push %edx + xorl %eax,%eax + movl 8(%esp),%edx + inl %dx,%eax + pop %edx + ret + +outb: + push %ebp + movl %esp,%ebp + pusha + + movl 8(%ebp),%edx + movl 12(%ebp),%eax + outb %al,%dx + + popa + pop %ebp + ret + +outw: + push %ebp + movl %esp,%ebp + pusha + + movl 8(%ebp),%edx + movl 12(%ebp),%eax + outw %ax,%dx + + popa + pop %ebp + ret + +outl: + push %ebp + movl %esp,%ebp + pusha + + movl 8(%ebp),%edx + movl 12(%ebp),%eax + outl %eax,%dx + + popa + pop %ebp + ret + +SRC=8 +DST=12 +CNT=16 +memcopy: + push %ebp + movl %esp,%ebp + pusha + + cld + movl CNT(%ebp),%ecx + movl DST(%ebp),%edi + movl SRC(%ebp),%esi + + rep movsb %ds:(%esi),%es:(%edi) + + popa + pop %ebp + ret + +DST=8 +CNT=12 +X=16 +memsetw: + push %ebp + movl %esp,%ebp + pusha + + cld + movl CNT(%ebp),%ecx + movl DST(%ebp),%edi + movl X(%ebp),%eax + + rep stosw %ax,%es:(%edi) + + popa + pop %ebp + ret + +DST=8 +CNT=12 +X=16 +memsetb: + push %ebp + movl %esp,%ebp + pusha + + cld + movl CNT(%ebp),%ecx + movl DST(%ebp),%edi + movl X(%ebp),%eax + + rep stosb %al,%es:(%edi) + + popa + pop %ebp + ret + +SRC=12 +DST=16 +CNT=20 +memcmp: + push %ebp + subl $4,%esp + movl %esp,%ebp + + pusha + + cld + movl CNT(%ebp),%ecx + movl DST(%ebp),%edi + movl SRC(%ebp),%esi + + repe cmpsb %es:(%edi),%ds:(%esi) + movl %ecx,(%ebp) + + popa + + movl (%ebp),%eax # return value => %eax (zero on success) + addl $4,%esp + pop %ebp + + ret + + +# THIS IS USERSPACE CODE +.global utext +utext: +0: + movl $0xdeadbeaf, %eax + int $48 + jmp 0b + # not reached +utext_end: + +.data +.global utext_size +utext_size: + .long utext_end - utext + + +.section K_DATA_START +.global interrupt_handler_size + +interrupt_handler_size: .long (h_end-h_start)/IDT_ITEMS Index: arch/ia32/src/boot/boot.S =================================================================== --- arch/ia32/src/boot/boot.S (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) +++ arch/ia32/src/boot/boot.S (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) @@ -0,0 +1,68 @@ +# +# Copyright (C) 2001-2004 Jakub Jermar +# All rights reserved. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# +# - Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# - Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# - The name of the author may not be used to endorse or promote products +# derived from this software without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR +# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES +# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. +# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, +# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF +# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +# + +.section K_TEXT_START +.global kernel_image_start + +.code16 +# +# This is where we require any SPARTAN-kernel-compatible boot loader +# to pass control in real mode. +# +# Protected mode tables are statically initialised during compile +# time. So we can just load the respective table registers and +# switch to protected mode. +# +kernel_image_start: + cli + xorw %ax,%ax + movw %ax,%ds + lgdt gdtr + movl %cr0,%eax + orl $0x1,%eax + movl %eax,%cr0 + jmp 0f +0: + movw $16,%ax + movw %ax,%es + movw %ax,%gs + movw %ax,%fs + movw %ax,%ds # kernel data + stack + movw %ax,%ss + movl $0x7c00,%esp + jmpl $8,$meeting_point +meeting_point: +.code32 + + lidt idtr + + call main_bsp # never returns + + + cli + hlt Index: arch/ia32/src/context.s =================================================================== --- arch/ia32/src/context.s (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) +++ arch/ia32/src/context.s (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) @@ -0,0 +1,75 @@ +# +# Copyright (C) 2001-2004 Jakub Jermar +# All rights reserved. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# +# - Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# - Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# - The name of the author may not be used to endorse or promote products +# derived from this software without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR +# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES +# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. +# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, +# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF +# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +# + +.text + +.global context_save +.global context_restore + +# +# save context of this CPU +context_save: + push %ebx + + movl 4(%esp),%eax # the caller's return %eip + movl 8(%esp),%ebx # address of the kernel_context variable to save context to + movl %eax,4(%ebx) # %eip -> ctx->pc + movl %esp,(%ebx) # %esp -> ctx->sp + + movl %ebx,%eax + pop %ebx + + movl %ebx,8(%eax) + movl %ecx,12(%eax) + movl %edx,16(%eax) + movl %esi,20(%eax) + movl %edi,24(%eax) + movl %ebp,28(%eax) + + xorl %eax,%eax # context_save returns 1 + incl %eax + ret + +# +# restore saved context on this CPU +context_restore: + movl 4(%esp),%eax # address of the kernel_context variable to restore context from + movl (%eax),%esp # ctx->sp -> %esp + addl $4,%esp # this is for the pop we don't do + + movl 8(%eax),%ebx + movl 12(%eax),%ecx + movl 16(%eax),%edx + movl 20(%eax),%esi + movl 24(%eax),%edi + movl 28(%eax),%ebp + + movl 4(%eax),%eax + movl %eax,(%esp) # ctx->pc -> saver's return %eip + xorl %eax,%eax # context_restore returns 0 + ret Index: arch/ia32/src/cpu/cpu.c =================================================================== --- arch/ia32/src/cpu/cpu.c (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) +++ arch/ia32/src/cpu/cpu.c (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) @@ -0,0 +1,110 @@ +/* + * Copyright (C) 2001-2004 Jakub Jermar + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * - The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include +#include +#include + +#include +#include +#include +#include + +/* + * Identification of CPUs. + * Contains only non-MP-Specification specific SMP code. + */ +#define AMD_CPUID_EBX 0x68747541 +#define AMD_CPUID_ECX 0x444d4163 +#define AMD_CPUID_EDX 0x69746e65 + +#define INTEL_CPUID_EBX 0x756e6547 +#define INTEL_CPUID_ECX 0x6c65746e +#define INTEL_CPUID_EDX 0x49656e69 + +enum vendor { + VendorUnknown=0, + VendorAMD, + VendorIntel +}; + +static char *vendor_str[] = { + "Unknown Vendor", + "AuthenticAMD", + "GenuineIntel" +}; + +void cpu_arch_init(void) +{ + the->cpu->arch.tss = tss_p; +} + + +void cpu_identify(void) +{ + cpu_info_t info; + int i; + + the->cpu->arch.vendor = VendorUnknown; + if (has_cpuid()) { + cpuid(0, &info); + + /* + * Check for AMD processor. + */ + if (info.cpuid_ebx==AMD_CPUID_EBX && + info.cpuid_ecx==AMD_CPUID_ECX && + info.cpuid_edx==AMD_CPUID_EDX) { + + the->cpu->arch.vendor = VendorAMD; + } + + /* + * Check for Intel processor. + */ + if (info.cpuid_ebx==INTEL_CPUID_EBX && + info.cpuid_ecx==INTEL_CPUID_ECX && + info.cpuid_edx==INTEL_CPUID_EDX) { + + the->cpu->arch.vendor = VendorIntel; + + } + + cpuid(1, &info); + the->cpu->arch.family = (info.cpuid_eax>>8)&0xf; + the->cpu->arch.model = (info.cpuid_eax>>4)&0xf; + the->cpu->arch.stepping = (info.cpuid_eax>>0)&0xf; + } +} + +void cpu_print_report(struct cpu* m) +{ + printf("cpu%d: (%s family=%d model=%d stepping=%d) %dMHz\n", + m->id, vendor_str[m->arch.vendor], m->arch.family, m->arch.model, m->arch.stepping, + m->frequency_mhz); +} Index: arch/ia32/src/cpuid.s =================================================================== --- arch/ia32/src/cpuid.s (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) +++ arch/ia32/src/cpuid.s (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) @@ -0,0 +1,79 @@ +# +# Copyright (C) 2001-2004 Jakub Jermar +# All rights reserved. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# +# - Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# - Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# - The name of the author may not be used to endorse or promote products +# derived from this software without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR +# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES +# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. +# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, +# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF +# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +# + +# +# CPU identification functions. +# The code below just interfaces the CPUID instruction. +# CPU recognition logic is contained in higher-level functions. + +.text + +.global has_cpuid +.global cpuid +.global rdtsc + +has_cpuid: + push %ebx + + pushf # store flags + popl %eax # read flags + movl %eax,%ebx # copy flags + btcl $21,%ebx # swap the ID bit + pushl %ebx + popf # propagate the change into flags + pushf + popl %ebx # read flags + andl $(1<<21),%eax # interested only in ID bit + andl $(1<<21),%ebx + xorl %ebx,%eax # 0 if not supported, 1 if supported + + pop %ebx + ret + +# cpuid(__u32 cmd, struct cpu_info *info) +cpuid: + pushl %ebp + movl %esp,%ebp + pusha + + movl 8(%ebp),%eax # load the command into %eax + movl 12(%ebp),%esi # laod the address of the info struct + + cpuid + movl %eax,0(%esi) + movl %ebx,4(%esi) + movl %ecx,8(%esi) + movl %edx,12(%esi) + + popa + popl %ebp + ret + +rdtsc: + rdtsc + ret Index: arch/ia32/src/debug/panic.s =================================================================== --- arch/ia32/src/debug/panic.s (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) +++ arch/ia32/src/debug/panic.s (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) @@ -0,0 +1,34 @@ +# +# Copyright (C) 2001-2004 Jakub Jermar +# All rights reserved. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# +# - Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# - Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# - The name of the author may not be used to endorse or promote products +# derived from this software without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR +# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES +# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. +# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, +# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF +# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +# + +.text +.global panic + +panic: + movl $halt,(%esp) # fake stack to make printf return to halt + jmp printf Index: arch/ia32/src/delay.s =================================================================== --- arch/ia32/src/delay.s (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) +++ arch/ia32/src/delay.s (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) @@ -0,0 +1,54 @@ +# +# Copyright (C) 2001-2004 Jakub Jermar +# All rights reserved. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# +# - Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# - Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# - The name of the author may not be used to endorse or promote products +# derived from this software without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR +# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES +# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. +# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, +# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF +# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +# + +# +# Micro second delay loop functions. +# + +.text + +.global asm_delay_loop +.global asm_fake_loop + +asm_delay_loop: + pushl %ecx + movl 8(%esp),%ecx # move argument to %ecx +0: lahf + dec %ecx + jnz 0b + popl %ecx + ret + +asm_fake_loop: + pushl %ecx + movl 8(%esp),%ecx # move argument to %ecx +0: lahf + dec %ecx + jz 0b + popl %ecx + ret Index: arch/ia32/src/drivers/ega.c =================================================================== --- arch/ia32/src/drivers/ega.c (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) +++ arch/ia32/src/drivers/ega.c (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) @@ -0,0 +1,116 @@ +/* + * Copyright (C) 2001-2004 Jakub Jermar + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * - The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include +#include +#include +#include +#include +#include + +/* + * The EGA driver. + * Simple and short. Function for displaying characters and "scrolling". + */ + +static spinlock_t egalock; +static __u32 ega_cursor; + +void ega_move_cursor(void); + +void ega_init(void) +{ + __u8 hi, lo; + + map_page_to_frame(VIDEORAM, VIDEORAM, PAGE_NOT_CACHEABLE, 0); + outb(0x3d4,0xe); + hi = inb(0x3d5); + outb(0x3d4,0xf); + lo = inb(0x3d5); + ega_cursor = (hi<<8)|lo; + ega_putchar('\n'); +} + +void ega_display_char(char ch) +{ + __u8 *vram = (__u8 *) VIDEORAM; + + vram[ega_cursor*2] = ch; +} + +/* + * This function takes care of scrolling. + */ +void ega_check_cursor(void) +{ + if (ega_cursor < SCREEN) + return; + + memcopy(VIDEORAM + ROW*2, VIDEORAM, (SCREEN - ROW)*2); + memsetw(VIDEORAM + (SCREEN - ROW)*2, ROW, 0x0720); + ega_cursor = ega_cursor - ROW; +} + +void ega_putchar(char ch) +{ + pri_t pri; + + pri = cpu_priority_high(); + spinlock_lock(&egalock); + + switch (ch) { + case '\n': + ega_cursor = (ega_cursor + ROW) - ega_cursor % ROW; + break; + case '\t': + ega_cursor = (ega_cursor + 8) - ega_cursor % 8; + break; + default: + ega_display_char(ch); + ega_cursor++; + break; + } + ega_check_cursor(); + ega_move_cursor(); + + spinlock_unlock(&egalock); + cpu_priority_restore(pri); +} + +void ega_move_cursor(void) +{ + outb(0x3d4,0xe); + outb(0x3d5,(ega_cursor>>8)&0xff); + outb(0x3d4,0xf); + outb(0x3d5,ega_cursor&0xff); +} + +void putchar(char ch) +{ + ega_putchar(ch); +} Index: arch/ia32/src/drivers/i8042.c =================================================================== --- arch/ia32/src/drivers/i8042.c (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) +++ arch/ia32/src/drivers/i8042.c (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) @@ -0,0 +1,58 @@ +/* + * Copyright (C) 2001-2004 Jakub Jermar + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * - The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include +#include +#include +#include +#include +#include +#include + +/* + * i8042 processor driver. + * Its very essential function is enabling the A20. + */ + +void i8042_init(void) +{ + /* A20: deadly if not enabled */ + outb(0x64,0xd1); + outb(0x60,0xdf); + + trap_register(VECTOR_KBD, i8042_interrupt); +} + +void i8042_interrupt(__u8 n, __u32 stack[]) +{ + __u8 x; + + trap_virtual_eoi(); + x = inb(0x60); + printf("%d", the->cpu->id);; +} Index: arch/ia32/src/drivers/i8254.c =================================================================== --- arch/ia32/src/drivers/i8254.c (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) +++ arch/ia32/src/drivers/i8254.c (revision f761f1eb635bfe9a5deaf70a0f0a51aa8d2f5f22) @@ -0,0 +1,130 @@ +/* + * Copyright (C) 2001-2004 Jakub Jermar + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * - The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include +#include