diff --git a/src/sys/init/Makefile b/src/sys/init/Makefile new file mode 100644 index 0000000..c3c2d99 --- /dev/null +++ b/src/sys/init/Makefile @@ -0,0 +1,27 @@ +# (C) 2002-2004 The UbixOS Project +# $Id$ + +# Include Global 'Source' Options +include ../../Makefile.inc +include ../Makefile.inc + +# Objects +OBJS = start.o main.o static.o + +all: $(OBJS) + +# Compile Types +.cc.o: + $(CXX) $(CFLAGS) $(INCLUDES) -c -o $@ $< +.cc.s: + $(CXX) $(CFLAGS) $(INCLUDES) -S -o $@ $< +.c.o: + $(CC) $(CFLAGS) $(INCLUDES) -c -o $@ $< +.c.s: + $(CC) $(CFLAGS) $(INCLUDES) -S -o $@ $< +.S.o: + $(CC) $(CFLAGS) $(INCLUDES) -c -o $@ $< + +# Clean up the junk +clean: + $(REMOVE) $(OBJS) diff --git a/src/sys/init/main.c b/src/sys/init/main.c new file mode 100644 index 0000000..5d2c229 --- /dev/null +++ b/src/sys/init/main.c @@ -0,0 +1,82 @@ +/***************************************************************************************** + Copyright (c) 2002-2004, 2005 The UbixOS Project + 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, the following disclaimer and the list of authors. Redistributions in binary + form must reproduce the above copyright notice, this list of conditions, the following + disclaimer and the list of authors in the documentation and/or other materials provided + with the distribution. Neither the name of the UbixOS Project nor the names of its + contributors may be used to endorse or promote products derived from this software + without specific prior written permission. + + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT OWNER OR CONTRIBUTORS 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. + + $Id$ + +*****************************************************************************************/ + +#include +#include +#include + +/***************************************************************************************** + Desc: The Kernels Descriptor table: + 0x00 - Dummy Entry + 0x08 - Ring 0 CS + 0x10 - Ring 0 DS + 0x18 - Dummy LDT + 0x20 - Scheduler TSS + 0x28 - Ring 3 CS + 0x30 - Ring 3 DS + 0x38 - GPF TSS + 0x40 - Stack Fault TSS + + Notes: + +*****************************************************************************************/ +ubixDescriptorTable(ubixGDT,9) { + {dummy:0}, + ubixStandardDescriptor(0x0, 0xFFFFF, (dCode + dRead + dBig + dBiglim)), + ubixStandardDescriptor(0x0, 0xFFFFF, (dData + dWrite + dBig + dBiglim)), + ubixStandardDescriptor(0x0, 0xFFFFF, (dLdt)), + ubixStandardDescriptor(0x4200, (sizeof(struct tssStruct)), (dTss + dDpl3)), + ubixStandardDescriptor(0x0, 0xFFFFF, (dCode + dWrite + dBig + dBiglim + dDpl3)), + ubixStandardDescriptor(0x0, 0xFFFFF, (dData + dWrite + dBig + dBiglim + dDpl3)), + ubixStandardDescriptor(0x4200, (sizeof(struct tssStruct)), (dTss)), + ubixStandardDescriptor(0x6200, (sizeof(struct tssStruct)), (dTss)), + }; +struct { + unsigned short limit __attribute__ ((packed)); + union descriptorTableUnion *gdt __attribute__ ((packed)); + } loadGDT = { (9 * sizeof(union descriptorTableUnion) - 1), ubixGDT }; + +/***************************************************************************************** + Functoin: int main() + + Desc: This is the entry point into the os where all of the kernels sub systems are + started up. + + Notes: + +*****************************************************************************************/ +int main() { + kprint("HI!\n"); + while (1); + return(0x0); + } + +/*** + END + ***/ diff --git a/src/sys/init/start.S b/src/sys/init/start.S new file mode 100644 index 0000000..8a1d46b --- /dev/null +++ b/src/sys/init/start.S @@ -0,0 +1,58 @@ +/***************************************************************************************** + Copyright (c) 2002-2004 The UbixOS Project + 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, the following disclaimer and the list of authors. Redistributions in binary + form must reproduce the above copyright notice, this list of conditions, the following + disclaimer and the list of authors in the documentation and/or other materials provided + with the distribution. Neither the name of the UbixOS Project nor the names of its + contributors may be used to endorse or promote products derived from this software + without specific prior written permission. + + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT OWNER OR CONTRIBUTORS 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. + + $Id$ + +*****************************************************************************************/ + +.globl _start +.text +.code32 +_start: + lgdtl (loadGDT) + mov $0x10,%eax + mov %eax,%ds + mov %eax,%es + mov %eax,%fs + mov %eax,%gs + mov %eax,%ss + mov $kStack,%eax + addl $0x2000,%eax + mov %eax,%esp + mov %eax,%ebp + mov $0x18,%ax + lldt %ax + mov $0x20,%ax + ltr %ax + ljmp $0x08,$start_next +start_next: + call main + +.data +.comm kStack,0x2000 + +/*** + END + ***/ diff --git a/src/sys/init/static.c b/src/sys/init/static.c new file mode 100644 index 0000000..1fce0b2 --- /dev/null +++ b/src/sys/init/static.c @@ -0,0 +1,46 @@ +/***************************************************************************************** + Copyright (c) 2002-2004 The UbixOS Project + 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, the following disclaimer and the list of authors. Redistributions in binary + form must reproduce the above copyright notice, this list of conditions, the following + disclaimer and the list of authors in the documentation and/or other materials provided + with the distribution. Neither the name of the UbixOS Project nor the names of its + contributors may be used to endorse or promote products derived from this software + without specific prior written permission. + + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT OWNER OR CONTRIBUTORS 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. + + $Id$ + +*****************************************************************************************/ + +int static_constructors(void) { + extern void (* __ctor_list)(); + void (** l_ctor)() = &__ctor_list; + int l_ctorCount = *(int *)l_ctor; + + l_ctor++; + while(l_ctorCount) { + (*l_ctor)(); + l_ctorCount--; + l_ctor++; + } + return(0x0); + } + +/*** + END + ***/