docs: preparation de la compilation de programmes en USER MODE (ring 3), ajout documentation API et librairies
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## Liste des API
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Bibliothèques disponibles dans COS2000
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### libc
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Fonctions disponibles dans la librairie "libc"
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#### test_api
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u32 test_api(void);
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syscall id : 0
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arguments : 0
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résultat : oui (0x66666666)
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@ -85,7 +85,7 @@
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/* OS identification */
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#define ELFOSABI_NONE 0 //No extensions or unspecified
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#define ELFOSABI_LINUX 3 //Linux
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#define ELFOSABI_COS2000 15 //COS2000
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#define ELFOSABI_COS2000 16 //COS2000
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/* ELF header */
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typedef struct elf32 {
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@ -5,13 +5,6 @@
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#define sysexit() asm volatile ("sysexit"::);
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#define inb(port) ({ \
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u8 _v; \
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asm volatile ("inb %%dx,%%al" : "=a" (_v) : "d" (port)); \
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_v; \
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})
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#define syscall0(syscall) ({ \
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u32 _v; \
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asm volatile (\
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@ -1,4 +1,4 @@
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CC=gcc -O0 -g -nostdinc -ffreestanding -fno-builtin -Wall -w -m32 -F pe-i386 -I ../include
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CC=gcc -O0 -g -nostdinc -ffreestanding -fno-builtin -Wall -w -m32 -F elf_i386 -I ../include
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LINK=ld -m elf_i386 -r -o
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SRCS= $(wildcard *.c)
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OBJS= $(SRCS:.c=.o)
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@ -14,7 +14,7 @@ u32 lastpid;
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u8 elf_errors1[]="Aucune signature ELF";
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u8 elf_errors2[]="Fichier au format ELF mais non 32 bits";
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u8 elf_errors3[]="ELF non MSB";
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u8 elf_errors3[]="ELF non LSB";
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u8 elf_errors4[]="ELF mauvaise version";
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u8 elf_errors5[]="ELF pour OS ne correspondant pas";
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u8 elf_errors6[]="Mauvais type de machine";
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@ -37,8 +37,6 @@ u32 elf_test(u8 *src)
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&& header->e_ident[EI_MAG2] == ELFMAG2 && header->e_ident[EI_MAG3] == ELFMAG3)
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{
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if (header->e_ident[EI_CLASS]!=ELFCLASS32)
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return 1;
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if (header->e_ident[EI_DATA]!=ELFDATA2LSB)
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return 2;
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if (header->e_ident[EI_DATA]!=ELFDATA2LSB)
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return 3;
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33
makefile
33
makefile
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@ -1,4 +1,4 @@
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all: bits32 bits64 harddisk uefi
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all: programs bits32 bits64 harddisk uefi
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sync
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bits32: ARCH=bits32
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@ -9,6 +9,11 @@ bits64: ARCH=bits64
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bits64: lib/libs.o system/system.sys
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sync
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programs: programs/test
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programs/test:
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make -C programs
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harddisk: final/harddisk.img.final
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uefi: final/harddiskuefi.img.final
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@ -17,20 +22,22 @@ install:
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(sudo apt-get install nasm gcc qemu fusefat fuseext2 cgdb ovmf bsdmainutils tar bsdmainutils indent binutils bochs bochs-x bochsbios)
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clean:
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(cd system; make clean)
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(cd lib;make clean)
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(cd final;make clean)
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make -C system clean
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make -C lib clean
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make -C final clean
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make -C programs clean
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sync
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littleclean:
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(cd system; make clean)
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(cd lib;make clean)
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(cd final;make littleclean)
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make -C system clean
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make -C lib clean
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make -C final littleclean)
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make -C programs clean
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sync
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indent:
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(cd system; make indent)
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(cd lib;make indent)
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make -C system indent
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make -C lib indent
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sync
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backup: clean
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@ -85,13 +92,13 @@ qemu64:
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(killall qemu-system-x86_64;qemu-system-x86_64 -m 5G -drive format=raw,file=./final/harddiskuefi.img.final --bios /usr/share/qemu/OVMF.fd --enable-kvm -cpu host -s &)
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system/system.sys:
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(cd system; VESA=$(VESA) make)
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make -C system VESA=$(VESA)
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final/harddisk.img.final:
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(cd final; make harddisk.img.final)
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make -C final harddisk.img.final
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final/harddiskuefi.img.final:
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(cd final; make harddiskuefi.img.final)
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make -C final harddiskuefi.img.final
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lib/libs.o:
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(cd lib; make)
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make -C lib
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@ -0,0 +1,7 @@
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/*******************************************************************************/
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/* COS2000 - Compatible Operating System - LGPL v3 - Hordé Nicolas */
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/* */
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#include "types.h";
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u32 test_api(void);
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/*******************************************************************************/
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/* COS2000 - Compatible Operating System - LGPL v3 - Hordé Nicolas */
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/* */
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#define syscall0(syscall) ({ \
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u32 _v; \
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asm volatile (\
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"mov %%esp,%%ecx;\
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mov $1f,%%edx;\
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sysenter;\
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1:" : "=a" (_v) : "a" (syscall): "ecx","edx","memory"); \
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_v; \
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})
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#define syscall1(syscall,arg1) ({ \
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u32 _v; \
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asm volatile (\
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"mov %%esp,%%ecx;\
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mov $1f,%%edx;\
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sysenter;\
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1:" : "=a" (_v) : "a" (syscall), "b" (arg1) : "ecx","edx","memory"); \
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_v; \
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})
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#define syscall2(syscall,arg1,arg2) ({ \
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u32 _v; \
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asm volatile (\
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"mov %%esp,%%ecx;\
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mov $1f,%%edx;\
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sysenter;\
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1:" : "=a" (_v) : "a" (syscall), "b" (arg1), "S" (arg2) : "ecx","edx","memory"); \
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_v; \
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})
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#define syscall3(syscall,arg1,arg2,arg3) ({ \
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u32 _v; \
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asm volatile (\
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"mov %%esp,%%ecx;\
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mov $1f,%%edx;\
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sysenter;\
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1:" : "=a" (_v) : "a" (syscall), "b" (arg1), "S" (arg2), "D" (arg3) : "ecx","edx","memory"); \
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_v; \
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})
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/*******************************************************************************/
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/* COS2000 - Compatible Operating System - LGPL v3 - Hordé Nicolas */
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/* */
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#ifndef ALLTYPES
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# define ALLTYPES
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typedef char int8;
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typedef short int16;
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typedef int int32;
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typedef long long int64;
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typedef char BYTE;
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typedef short WORD;
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typedef long DWORD;
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typedef long long QWORD;
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typedef signed char SBYTE;
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typedef signed short SWORD;
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typedef signed long SDWORD;
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typedef signed long long SQWORD;
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typedef unsigned char UBYTE;
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typedef unsigned short UWORD;
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typedef unsigned long UDWORD;
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typedef unsigned long long UQWORD;
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typedef unsigned char u8;
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typedef unsigned short u16;
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typedef unsigned int u32;
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typedef unsigned long long int u64;
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typedef char s8;
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typedef short s16;
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typedef int s32;
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typedef long int s64;
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typedef int bool;
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extern char ctype[];
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#define true 1
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#define false 0
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#define NULL 0x0000
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#define CT_UP 0x01 /* upper case */
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#define CT_LOW 0x02 /* lower case */
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#define CT_DIG 0x04 /* digit */
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#define CT_CTL 0x08 /* control */
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#define CT_PUN 0x10 /* punctuation */
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#define CT_WHT 0x20 /* white space (space/cr/lf/tab) */
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#define CT_HEX 0x40 /* hex digit */
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#define CT_SP 0x80 /* hard space (0x20) */
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/* without the cast to unsigned, DJGPP complains (using -Wall) */
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#define isalnum(c) ((ctype + 1)[(unsigned)(c)] & (CT_UP | CT_LOW | CT_DIG))
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#define isalpha(c) ((ctype + 1)[(unsigned)(c)] & (CT_UP | CT_LOW))
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#define iscntrl(c) ((ctype + 1)[(unsigned)(c)] & (CT_CTL))
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#define isdigit(c) ((ctype + 1)[(unsigned)(c)] & (CT_DIG))
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#define isgraph(c) ((ctype + 1)[(unsigned)(c)] & (CT_PUN | CT_UP | CT_LOW | CT_DIG))
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#define islower(c) ((ctype + 1)[(unsigned)(c)] & (CT_LOW))
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#define isprint(c) ((ctype + 1)[(unsigned)(c)] & (CT_PUN | CT_UP | CT_LOW | CT_DIG | CT_SP))
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#define ispunct(c) ((ctype + 1)[(unsigned)(c)] & (CT_PUN))
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#define isspace(c) ((ctype + 1)[(unsigned)(c)] & (CT_WHT))
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#define isupper(c) ((ctype + 1)[(unsigned)(c)] & (CT_UP))
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#define isxdigit(c) ((ctype + 1)[(unsigned)(c)] & (CT_DIG | CT_HEX))
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#define isascii(c) ((unsigned)(c) <= 0x7F)
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#define toascii(c) ((unsigned)(c) & 0x7F)
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#define tolower(c) (isupper(c) ? c + 'a' - 'A' : c)
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#define toupper(c) (islower(c) ? c + 'A' - 'a' : c)
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#endif
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/*******************************************************************************/
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/* COS2000 - Compatible Operating System - LGPL v3 - Hordé Nicolas */
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/* */
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#include "libc.h";
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#include "syscall.h";
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#include "types.h";
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u32 test_api(void)
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{
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syscall0(0x0);
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}
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CC=gcc -O0 -g -nostdinc -ffreestanding -fno-builtin -Wall -w -m32 -F elf-i386 -I ../include
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LINK=ld -m elf_i386 -r -o
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SRCS= $(wildcard *.c)
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OBJS= $(SRCS:.c=.o)
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ARCH=ar rcs
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all: makeall
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makeall: libs.a
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libs.a:libs.o
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$(ARCH) $@ $^
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libs.o:$(OBJS)
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$(LINK) libs.o $(OBJS)
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.o: .c
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$(CC) $^
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clean:
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rm -f *.o
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rm -f *.c~
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rm -f *.a
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indent:
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indent -linux -i8 -ts8 *.c
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OUTPUT_FORMAT("elf32-i386", "elf32-i386", "elf32-i386")
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OUTPUT_ARCH(i386)
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ENTRY(main)
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SECTIONS
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{
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. = 0x40000000;
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.text ALIGN(16): {
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*(.text)
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}
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}
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CC=gcc -O0 -g -nostdinc -ffreestanding -fno-builtin -Wall -w -m32 -I ./include -c -o
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LINK=ld -m elf_i386 -T linker.lds -n -o
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SRCS= $(wildcard *.c)
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EXECS= $(SRCS:.c=)
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all: lib/libs.a $(EXECS)
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lib/libs.a:
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make -C lib
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%: %.c
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$(CC) $@.o $<
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$(LINK) $@ $@.o lib/libs.a
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chmod 644 $@
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elfedit --output-osabi FenixOS $@
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clean:
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make -C lib clean
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rm -f *.o
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rm -f *.c~
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find . -type f ! -perm /u=x -maxdepth 1 -regex '.+/\.?[^\.]+' -exec rm {} \;
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indent:
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indent -linux -i8 -ts8 *.c
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/*******************************************************************************/
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/* COS2000 - Compatible Operating System - LGPL v3 - Hordé Nicolas */
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/* */
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#include "libc.h";
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#include "types.h";
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void main(void)
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{
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test_api();
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}
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