Verzeichnisstruktur ver?ndertHEADmaster

6 files changed, 555 insertions, 0 deletions

diff --git a/system/Makefile b/system/Makefile
new file mode 100644
index 0000000..ade470d
--- /dev/null
+++ b/system/Makefile
@@ -0,0 +1,6 @@
+SYSTEM_FILES = system/kernel.o system/interrupt.o system/ansi.o system/hex.o system/timer.o
+
+system/system.o : $(SYSTEM_FILES)
+	@echo Linking $*.o
+	@ld -r -o $*.o $(SYSTEM_FILES)
+	@echo
diff --git a/system/ansi.S b/system/ansi.S
new file mode 100644
index 0000000..d1b5f55
--- /dev/null
+++ b/system/ansi.S
@@ -0,0 +1,74 @@
+/* ansi.S - ANSI conversion functions */
+
+.text
+
+.global ansi2ascii, ascii2ansi
+
+ascii2ansi:
+	push %eax
+	push %ds
+	mov $16,%ax
+	mov %ax,%ds
+	xor %eax,%eax
+	mov %dl,%al
+	add $ascii2ansi_tab,%eax
+	mov (%eax),%dl
+	pop %ds
+	pop %eax
+	ret
+
+
+ansi2ascii:
+	push %eax
+	push %ds
+	mov $16,%ax
+	mov %ax,%ds
+	xor %eax,%eax
+	mov %dl,%al
+	add $ansi2ascii_tab,%eax
+	mov (%eax),%dl
+	pop %ds
+	pop %eax
+	ret
+
+
+.data
+
+ansi2ascii_tab:
+
+.byte 0, ' ', ' ', ' ', ' ', ' ', ' ', 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, ' ', ' '
+.byte ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' '
+.byte ' ', '!', '"', '#', '$', '%', '&', '\'', '(', ')', '*', '+', ',', '-', '.', '/'
+.byte '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', ':', ';', '<', '=', '>', '?'
+.byte '@', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O'
+.byte 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '[', '\\', ']', '^', '_'
+.byte '`', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o'
+.byte 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '{', '|', '}', '~', ' '
+.byte ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' '
+.byte ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' '
+.byte ' ', 0xAD, 0x9B, 0x9C, ' ', 0x9D, 0x7C, 0x15, ' ', ' ', 0xA6, 0xAE, 0xAA, 0x2D, ' ', ' '
+.byte 0xF8, 0xF1, 0xFD, ' ', 0x27, 0xE6, 0x14, 0xF9, ' ', ' ', 0xA7, 0xAF, 0xAC, 0xAB, ' ', 0xA8
+.byte ' ', ' ', ' ', ' ', 0x8E, 0x8F, 0x92, 0x80, ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' '
+.byte ' ', 0xA5, ' ', ' ', ' ', ' ', 0x99, ' ', ' ', ' ', ' ', ' ', 0x9A, ' ', ' ', 0xE1
+.byte 0x85, 0xA0, 0x83, ' ', 0x84, 0x86, 0x91, 0x87, 0x8A, 0x82, 0x88, 0x89, 0x8D, 0xA1, 0x8C, 0x8B
+.byte ' ', 0xA4, 0x95, 0xA2, 0x93, ' ', 0x94, ' ', ' ', 0x97, 0xA3, 0x96, 0x81, ' ', ' ', 0x98
+
+
+ascii2ansi_tab:
+
+.byte 0, ' ', ' ', ' ', ' ', ' ', ' ', 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, ' ', '*'
+.byte ' ', ' ', ' ', '!', '¶', '§', '_', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' '
+.byte ' ', '!', '"', '#', '$', '%', '&', '\'', '(', ')', '*', '+', ',', '-', '.', '/'
+.byte '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', ':', ';', '<', '=', '>', '?'
+.byte '@', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O'
+.byte 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '[', '\\', ']', '^', '_'
+.byte '`', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o'
+.byte 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '{', '|', '}', '~', ' '
+.byte 'Ç', 'ü', 'é', 'â', 'ä', 'à', 'å', 'ç', 'ê', 'ë', 'è', 'ï', 'î', 'ì', 'Ä', 'Å'
+.byte 'É', 'æ', 'Æ', 'ô', 'ö', 'ò', 'û', 'ù', 'ÿ', 'Ö', 'Ü', '¢', '£', '¥', ' ', ' '
+.byte 'á', 'í', 'ó', 'ú', 'ñ', 'Ñ', 'ª', 'º', '¿', ' ', '¬', '½', '¼', '¡', '«', '»'
+.byte ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' '
+.byte ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' '
+.byte ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' '
+.byte ' ', ' ', ' ', ' ', ' ', ' ', 'µ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' '
+.byte ' ', '±', ' ', ' ', ' ', ' ', '÷', ' ', '°', '·', ' ', ' ', ' ', '²', '·', ' '
diff --git a/system/hex.c b/system/hex.c
new file mode 100644
index 0000000..4374063
--- /dev/null
+++ b/system/hex.c
@@ -0,0 +1,31 @@
+/* hex.c - hexdecimal print functions */
+
+#include <system.h>
+
+
+extern unsigned char console_std_attr;
+
+static char hex_values[16] = "0123456789ABCDEF";
+
+void print_hex_byte(unsigned char hex) {
+	print_char(hex_values[(hex >> 4) & 0x0F]);
+	print_char(hex_values[hex & 0x0F]);
+}
+
+void print_hex_word(unsigned short hex) {
+	print_char(hex_values[(hex >> 12) & 0x0F]);
+	print_char(hex_values[(hex >> 8) & 0x0F]);
+	print_char(hex_values[(hex >> 4) & 0x0F]);
+	print_char(hex_values[hex & 0x0F]);
+}
+
+void print_hex_long(unsigned long hex) {
+	print_char(hex_values[(hex >> 28) & 0x0F]);
+	print_char(hex_values[(hex >> 24) & 0x0F]);
+	print_char(hex_values[(hex >> 20) & 0x0F]);
+	print_char(hex_values[(hex >> 16) & 0x0F]);
+	print_char(hex_values[(hex >> 12) & 0x0F]);
+	print_char(hex_values[(hex >> 8) & 0x0F]);
+	print_char(hex_values[(hex >> 4) & 0x0F]);
+	print_char(hex_values[hex & 0x0F]);
+}
diff --git a/system/interrupt.S b/system/interrupt.S
new file mode 100644
index 0000000..3791ce2
--- /dev/null
+++ b/system/interrupt.S
@@ -0,0 +1,320 @@
+/* interrupt.S - interrupt handlers */
+
+#include <asm/interrupt.h>
+
+.text
+
+.global EXC_DIV_ERROR, EXC_DEBUG, EXC_NMI, EXC_BREAKPOINT
+.global EXC_INTO_OVERFLOW, EXC_BOUND_OVERFLOW, EXC_INVAL_OPCODE, EXC_NO_COPROCESSOR
+.global EXC_DOUBLE_EXCEPTION, EXC_COPROC_PROT_ERROR, EXC_INVAL_TSS, EXC_SEG_NOT_PRESENT
+.global EXC_STACK_FAULT, EXC_GEN_PROT_VIOLATION, EXC_PAGE_FAULT, EXC_RESERVED
+.global EXC_COPROCESSOR_ERROR, EXC_ALIGN_ERROR
+
+EXC_DIV_ERROR:
+	mov $16,%ax
+	mov %ax,%ds
+	pushl $exc_div_error_str
+	call print
+	addl $4,%esp
+	jmp looping
+
+EXC_DEBUG:
+	mov $16,%ax
+	mov %ax,%ds
+	pushl $exc_debug_str
+	call print
+	addl $4,%esp
+	jmp looping
+
+EXC_NMI:
+	mov $16,%ax
+	mov %ax,%ds
+	pushl $exc_nmi_str
+	call print
+	addl $4,%esp
+	jmp looping
+
+EXC_BREAKPOINT:
+	mov $16,%ax
+	mov %ax,%ds
+	pushl $exc_breakpoint_str
+	call print
+	addl $4,%esp
+	jmp looping
+
+EXC_INTO_OVERFLOW:
+	mov $16,%ax
+	mov %ax,%ds
+	pushl $exc_into_overflow_str
+	call print
+	addl $4,%esp
+	jmp looping
+
+EXC_BOUND_OVERFLOW:
+	mov $16,%ax
+	mov %ax,%ds
+	pushl $exc_bound_overflow_str
+	call print
+	addl $4,%esp
+	jmp looping
+
+EXC_INVAL_OPCODE:
+	mov $16,%ax
+	mov %ax,%ds
+	pushl $exc_inval_opcode_str
+	call print
+	addl $4,%esp
+	jmp looping
+
+EXC_NO_COPROCESSOR:
+	mov $16,%ax
+	mov %ax,%ds
+	pushl $exc_no_coprocessor_str
+	call print
+	addl $4,%esp
+	jmp looping
+
+EXC_DOUBLE_EXCEPTION:
+	mov $16,%ax
+	mov %ax,%ds
+	pushl $exc_double_exception_str
+	call print
+	addl $4,%esp
+	jmp looping
+
+EXC_COPROC_PROT_ERROR:
+	mov $16,%ax
+	mov %ax,%ds
+	pushl $exc_coproc_prot_error_str
+	call print
+	addl $4,%esp
+	jmp looping
+
+EXC_INVAL_TSS:
+	mov $16,%ax
+	mov %ax,%ds
+	pushl $exc_inval_tss_str
+	call print
+	addl $4,%esp
+	jmp looping
+
+EXC_SEG_NOT_PRESENT:
+	mov $16,%ax
+	mov %ax,%ds
+	pushl $exc_seg_not_present_str
+	call print
+	addl $4,%esp
+	jmp looping
+
+EXC_STACK_FAULT:
+	mov $16,%ax
+	mov %ax,%ds
+	pushl $exc_stack_fault_str
+	call print
+	addl $4,%esp
+	jmp looping
+
+EXC_GEN_PROT_VIOLATION:
+	mov $16,%ax
+	mov %ax,%ds
+	pushl $exc_gen_prot_violation_str
+	call print
+	addl $4,%esp
+	jmp looping
+
+EXC_PAGE_FAULT:
+	mov $16,%ax
+	mov %ax,%ds
+	pushl $exc_page_fault_str
+	call print
+	addl $4,%esp
+	jmp looping
+
+EXC_RESERVED:
+	mov $16,%ax
+	mov %ax,%ds
+	pushl $exc_reserved_str
+	call print
+	addl $4,%esp
+	jmp looping
+
+EXC_COPROCESSOR_ERROR:
+	mov $16,%ax
+	mov %ax,%ds
+	pushl $exc_coprocessor_error_str
+	call print
+	addl $4,%esp
+	jmp looping
+
+EXC_ALIGN_ERROR:
+	mov $16,%ax
+	mov %ax,%ds
+	pushl $exc_align_error_str
+	call print
+	addl $4,%esp
+
+looping: jmp looping
+
+
+.data
+
+exc_div_error_str:		.asciz "EXCEPTION: DIVIDE ERROR\r\n"
+exc_debug_str:			.asciz "EXCEPTION: DEBUG EXCEPTION\r\n"
+exc_nmi_str:			.asciz "EXCEPTION: NON-MASKABLE INTERRUPT\r\n"
+exc_breakpoint_str:		.asciz "EXCEPTION: BREAKPOINT\r\n"
+exc_into_overflow_str:		.asciz "EXCEPTION: OVERFLOW (INTO)\r\n"
+exc_bound_overflow_str:		.asciz "EXCEPTION: OVERFLOW (BOUND)\r\n"
+exc_inval_opcode_str:		.asciz "EXCEPTION: INVALID OPCODE\r\n"
+exc_no_coprocessor_str:		.asciz "EXCEPTION: NO COPROCESSOR\r\n"
+exc_double_exception_str:	.asciz "EXCEPTION: DOUBLE EXCEPTION\r\n"
+exc_coproc_prot_error_str:	.asciz "EXCEPTION: COPROCESSOR PROTECTION ERROR\r\n"
+exc_inval_tss_str:		.asciz "EXCEPTION: INVALID TSS SEGMENT\r\n"
+exc_seg_not_present_str:	.asciz "EXCEPTION: SEGMENT NOT PRESENT\r\n"
+exc_stack_fault_str:		.asciz "EXCEPTION: STACK FAULT\r\n"
+exc_gen_prot_violation_str:	.asciz "EXCEPTION: GENERAL PROTECTION VIOLATION\r\n"
+exc_page_fault_str:		.asciz "EXCEPTION: PAGE FAULT\r\n"
+exc_reserved_str:		.asciz "EXCEPTION: UNKNOWN ERROR\r\n"
+exc_coprocessor_error_str:	.asciz "EXCEPTION: COPROCESSOR ERROR\r\n"
+exc_align_error_str:		.asciz "EXCEPTION: ALIGNMENT ERROR\r\n"
+
+
+.text
+
+.global IRQ0, IRQ1, IRQ2, IRQ3, IRQ4, IRQ5, IRQ6, IRQ7, IRQ8, IRQ9, IRQ10, IRQ11, IRQ12, IRQ13, IRQ14, IRQ15
+
+IRQ0:
+	pusha
+	pushf
+	incb cur_blink_counter
+	cmpb $CUR_BLINK,cur_blink_counter
+	jb no_blink
+	subb $CUR_BLINK,cur_blink_counter
+	call console_cur_blink
+no_blink:
+	cmpl $0,timers
+	je no_timer
+	decl timers
+no_timer:
+	mov $0x20, %al
+	out %al, $0x20
+	popf
+	popa
+	iret
+
+IRQ1:
+	push %ax
+	push %ds
+	push %edx
+	mov $16,%ax
+	mov %ax,%ds
+	in $0x60,%al
+	call kb_write_keycode
+	mov $0x20, %al
+	out %al, $0x20
+	pop %edx
+	pop %ds
+	pop %ax
+	iret
+	
+IRQ2:
+	push %ax
+	mov $0x20, %al
+	out %al, $0x20
+	pop %ax
+	iret
+	
+IRQ3:
+	push %ax
+	mov $0x20, %al
+	out %al, $0x20
+	pop %ax
+	iret
+	
+IRQ4:
+	push %ax
+	mov $0x20, %al
+	out %al, $0x20
+	pop %ax
+	iret
+	
+IRQ5:
+	push %ax
+	mov $0x20, %al
+	out %al, $0x20
+	pop %ax
+	iret
+	
+IRQ6:
+	#push %ax
+	pushf
+	pusha
+	call floppy_IRQ
+	mov $0x20, %al
+	out %al, $0x20
+	#pop %ax
+	popa
+	popf
+	iret
+	
+IRQ7:
+	push %ax
+	mov $0x20, %al
+	out %al, $0x20
+	pop %ax
+	iret
+	
+IRQ8:
+	push %ax
+	mov $0x20, %al
+	out %al, $0xA0
+	pop %ax
+	iret
+	
+IRQ9:
+	push %ax
+	mov $0x20, %al
+	out %al, $0xA0
+	pop %ax
+	iret
+	
+IRQ10:
+	push %ax
+	mov $0x20, %al
+	out %al, $0xA0
+	pop %ax
+	iret
+	
+IRQ11:
+	push %ax
+	mov $0x20, %al
+	out %al, $0xA0
+	pop %ax
+	iret
+	
+IRQ12:
+	push %ax
+	mov $0x20, %al
+	out %al, $0xA0
+	pop %ax
+	iret
+	
+IRQ13:
+	push %ax
+	mov $0x20, %al
+	out %al, $0xA0
+	pop %ax
+	iret
+	
+IRQ14:
+	push %ax
+	mov $0x20, %al
+	out %al, $0xA0
+	pop %ax
+	iret
+	
+IRQ15:
+	push %ax
+	mov $0x20, %al
+	out %al, $0xA0
+	pop %ax
+	iret
diff --git a/system/kernel.c b/system/kernel.c
new file mode 100644
index 0000000..e8ad3a9
--- /dev/null
+++ b/system/kernel.c
@@ -0,0 +1,115 @@
+/* kernel.c - kernel functions */
+
+#include <system.h>
+#include <console.h>
+
+
+extern unsigned char console_std_attr;
+extern unsigned short console_cur_pos;
+extern unsigned char console_flags;
+
+unsigned char numprint = 0;
+
+#define PRINT_ON if(numprint == 0) { \
+		asm("cli");\
+		console_cursor_off();\
+	}\
+	numprint++
+
+#define PRINT_OFF numprint--;\
+	if(numprint == 0) {\
+		console_cursor_on();\
+		asm("sti");\
+	}
+
+
+void print(unsigned char * text) {
+	print_attr(text, console_std_attr);
+}
+
+void print_attr(unsigned char * text, unsigned char attr) {
+	PRINT_ON;
+	while(*text) {
+		print_char_attr(*text, attr);
+		text++;
+	}
+	PRINT_OFF;
+}
+
+void print_char(unsigned char text) {
+	print_char_attr(text, console_std_attr);
+}
+
+void print_char_attr(unsigned char text, unsigned char attr) {
+	PRINT_ON;
+	switch(text) {
+		case 0x08:		// backspace
+			if(console_cur_pos) console_cur_pos--;
+			break;
+		case 0x09:		// tab
+			console_cur_pos += (8 - (console_cur_pos % 8));
+			break;
+		case 0x0A:		// new line
+			console_cur_pos += (80 - (console_cur_pos % 80));
+			break;
+		case 0x0B:		// home
+		case 0x0C:		// form feed
+			console_cur_pos = 0;
+			asm(
+				"cld\n"
+				"mov $32,%%ax\n"
+				"mov %%ax,%%es\n"
+				"xor %%edi,%%edi\n"
+				"mov %0,%%ah\n"
+				"mov $0x20,%%al\n"
+				"mov $2000,%%ecx\n"
+				"rep stosw"
+				: : "m" (attr)
+			);
+			break;
+		case 0x0D:		// carriage return
+			console_cur_pos -= (console_cur_pos % 80);
+			break;
+		default:
+			ANSI2ASCII(text);
+			asm(
+				"cld\n"
+				"mov $32,%%ax\n"
+				"mov %%ax,%%es\n"
+				"xor %%eax,%%eax\n"
+				"mov %0,%%ax\n"
+				"shl $1,%%eax\n"
+				"mov %%eax,%%edi\n"
+				"mov %1,%%al\n"
+				"mov %2,%%ah\n"
+				"stosw"
+				: : "m" (console_cur_pos), "m" (text), "m" (attr)
+			);
+			console_cur_pos++;
+	}
+	// scroll
+	if(console_cur_pos >= 2000) {
+		console_cur_pos -= 80;
+		asm(
+			"cld\n"
+			"push %%ds\n"
+			
+			"mov $32,%%ax\n"
+			"mov %%ax,%%ds\n"
+			"mov %%ax,%%es\n"
+			"mov $1920,%%ecx\n"
+			"mov $160,%%esi\n"
+			"xor %%edi,%%edi\n"
+			"rep movsw\n"
+			
+			"mov $80,%%cx\n"
+			"mov %%cs:%0,%%ah\n"
+			"mov $0x20,%%al\n"
+			"rep stosw\n"
+			
+			"pop %%ds"
+			: : "m" (console_std_attr)
+		);
+	}
+	PRINT_OFF;
+}
diff --git a/system/timer.c b/system/timer.c
new file mode 100644
index 0000000..847cfb0
--- /dev/null
+++ b/system/timer.c
@@ -0,0 +1,9 @@
+#include <timer.h>
+#include <system.h>
+
+TIMER timers = {0};
+
+void sleep(unsigned long ms) {
+	timers.time = (ms + 9)/10;
+	while(timers.time) asm("incl %0; decl %0" : "+m" (timers.time));
+}