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pull/2/head
Jørn Guldberg 6 years ago
parent
f113cf57c9
commit
c7ad92b3b2
6 changed files with 570 additions and 377 deletions
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  1. 3
      build.sh
  2. BIN
      disk.out
  3. 95
      main.c
  4. 729
      main.s
  5. 64
      std_singos/stdio.h
  6. 56
      std_singos/string.h

3
build.sh
View File

@ -1,10 +1,11 @@
bcc -S main.c bcc -S main.c
echo -e "push bp echo -e "push bp
mov bp,sp mov bp,sp
push 10[bp]
push 8[bp] push 8[bp]
push 6[bp] push 6[bp]
call _main call _main
add sp, #0x4 add sp, #0x6
pop bp pop bp
retf\n $(cat main.s)" > main.s retf\n $(cat main.s)" > main.s
sed -i '/.globl ___mkargv/d' ./main.s sed -i '/.globl ___mkargv/d' ./main.s

BIN
disk.out
View File

Binary file not shown.

95
main.c
View File

@ -4,6 +4,7 @@
// //
#include "std_singos/string.h" #include "std_singos/string.h"
#include "std_singos/stdio.h"
#include "driver/disk.h" #include "driver/disk.h"
#define SPACE_MBR_RECORD 2048 // Sectors #define SPACE_MBR_RECORD 2048 // Sectors
@ -28,6 +29,7 @@ typedef struct File_System_Control_Information FSCI;
typedef struct meta_information_format mif; typedef struct meta_information_format mif;
typedef struct tag_record tag_record; typedef struct tag_record tag_record;
typedef struct lsfs_file lsfs_file; typedef struct lsfs_file lsfs_file;
typedef struct Parameter_Struct Parameter_Struct;
typedef enum Table_Entry_Kind typedef enum Table_Entry_Kind
{ {
@ -46,9 +48,6 @@ typedef enum Service_Action
} Service_Action; } Service_Action;
int number_low;
int selector;
struct Struct_Table_Entry struct Struct_Table_Entry
{ {
char filename[256]; char filename[256];
@ -86,12 +85,22 @@ typedef struct Directory_Table
}; };
struct Parameter_Struct
{
char* path;
char* new_path;
int buffer_segment;
int buffer_address;
int buffer_size;
int data_length;
int byte_offset_into_file;
Table_Entry_Kind entry_kind;
};
void print(string); int main(selector, pointer_parameter_segment, pointer_parameter_struct)
int main(selector, parameter_struct)
int selector; int selector;
void* parameter_struct; void* pointer_parameter_segment;
void* pointer_parameter_struct;
{ {
// selectot should be a "selector" for which disk service // selectot should be a "selector" for which disk service
// one wnats to use. // one wnats to use.
@ -99,6 +108,7 @@ void* parameter_struct;
FSCI fsci; FSCI fsci;
Service_Action service_action; Service_Action service_action;
Directory_Table current_table; Directory_Table current_table;
Parameter_Struct parameter_struct;
int local_segment = 0x7e0; int local_segment = 0x7e0;
int stack_segment = 0x8fc0; int stack_segment = 0x8fc0;
long index_as_long; long index_as_long;
@ -114,7 +124,7 @@ void* parameter_struct;
What do we need to know: What do we need to know:
Index of FSCI Index of FSCI
*/ */
index_as_long = parameter_struct; index_as_long = pointer_parameter_struct;
disk_service_read_data_from_disk(index_as_long, 1, &fsci, stack_segment); disk_service_read_data_from_disk(index_as_long, 1, &fsci, stack_segment);
print("File System has been loaded: "); print("File System has been loaded: ");
print_newline(); print_newline();
@ -123,6 +133,9 @@ void* parameter_struct;
} break; } break;
case SERVICE_FIND_ENTRY: case SERVICE_FIND_ENTRY:
{ {
memcpy(&parameter_struct, stack_segment, pointer_parameter_struct, pointer_parameter_segment, sizeof(Parameter_Struct));
dump_ax(parameter_struct.buffer_size);
print_newline();
disk_service_read_data_from_disk(fsci.master_table_index[0], DEFAULT_TABLE_SIZE, &current_table, stack_segment); disk_service_read_data_from_disk(fsci.master_table_index[0], DEFAULT_TABLE_SIZE, &current_table, stack_segment);
print("Current table: "); print("Current table: ");
print_newline(); print_newline();
@ -141,6 +154,8 @@ void* parameter_struct;
// Buffer: // Buffer:
destination_segment destination_segment
destination_address destination_address
buffer_size
offset_into_file
*/ */
print("Hit READ case"); print("Hit READ case");
} break; } break;
@ -159,67 +174,3 @@ void* parameter_struct;
} }
//void load_ //void load_
void print(string)
char* string;
{
#asm
push bp
mov bp,sp
mov si,4[bp]
call 0x0000:0x7C47
pop bp
#endasm
}
void print_stack(argument)
{
#asm
push bp
mov bp,sp
push ds
push ax
mov ax, ss
mov ds, ax
mov si,4[bp]
call 0x0000:0x7C47
pop ax
pop ds
pop bp
#endasm
}
dump_ax_return(input)
void* input;
{
return input;
}
void dump_ax(input)
void* input;
{
// Force the variable in ax
dump_ax_return(input)
#asm
push bp
mov bp,sp
call 0x000:0x7C2A
pop bp
#endasm
}
void print_newline()
{
#asm
printCRLF:
mov ah, #0xE
mov al, #13
int #0x10
mov al, #10
int #0x10
ret
#endasm
}

729
main.s
View File

@ -1,9 +1,10 @@
push bp push bp
mov bp,sp mov bp,sp
push 10[bp]
push 8[bp] push 8[bp]
push 6[bp] push 6[bp]
call _main call _main
add sp, #0x4 add sp, #0x6
pop bp pop bp
retf retf
! 1 ! 1
@ -11,20 +12,22 @@ retf
! 1 # 1 "std_singos/string.h" ! 1 # 1 "std_singos/string.h"
! 1 void strcpy (destination, destination_segment, source, source_segment ); ! 1 void strcpy (destination, destination_segment, source, source_segment );
!BCC_EOS !BCC_EOS
! 2 ! 2 void memcpy (destination, destination_segment, source, source_segment, num_bytes );
! 3 void strcpy (destination, destination_segment, source, source_segment ) !BCC_EOS
! 4 char *destination; ! 3
! 4 void strcpy (destination, destination_segment, source, source_segment )
! 5 char *destination;
export _strcpy export _strcpy
_strcpy: _strcpy:
!BCC_EOS !BCC_EOS
! 5 int destination_segment; ! 6 int destination_segment;
!BCC_EOS !BCC_EOS
! 6 char *source; ! 7 char *source;
!BCC_EOS !BCC_EOS
! 7 int source_segment; ! 8 int source_segment;
!BCC_EOS !BCC_EOS
! 8 { ! 9 {
! 9 #asm ! 10 #asm
!BCC_ASM !BCC_ASM
_strcpy.source set 6 _strcpy.source set 6
_strcpy.destination set 2 _strcpy.destination set 2
@ -35,7 +38,7 @@ _strcpy.destination_segment set 4
; IN di: the second (zero terminated) string ; IN di: the second (zero terminated) string
; OUT SF and ZF (same semantics as cmp) ; OUT SF and ZF (same semantics as cmp)
! 15 19 ! 16 20
push bp push bp
mov bp,sp mov bp,sp
@ -70,11 +73,202 @@ _strcpy.destination_segment set 4
pop ax pop ax
pop bp pop bp
! 53 endasm ! 54 endasm
!BCC_ENDASM
! 55 }
ret
! 56
! 57 void memcpy (destination, destination_segment, source, source_segment, num_bytes)
! 58 void *destination;
export _memcpy
_memcpy:
!BCC_EOS
! 59 int destination_segment;
!BCC_EOS
! 60 void *source;
!BCC_EOS
! 61 int source_segment;
!BCC_EOS
! 62 int num_bytes;
!BCC_EOS
! 63 {
! 64 #asm
!BCC_ASM
_memcpy.source set 6
_memcpy.destination set 2
_memcpy.num_bytes set $A
_memcpy.source_segment set 8
_memcpy.destination_segment set 4
; copy two strings
; IN si: the first (zero terminated) string
; IN di: the second (zero terminated) string
; OUT SF and ZF (same semantics as cmp)
! 70 75
push bp
mov bp,sp
memcpy:
push ax
push bx
push di
push es
push si
push ds
mov ax, 4[bp]; ;
mov di, ax
mov ax, 6[bp]; ;
mov es, ax
mov ax, 8[bp]; ;
mov si, ax
mov ax, 10[bp]; ;
mov ds, ax
mov cx, 12[bp];
.memcpy_loop:
movsb
cmp cx, 0x0
je .end
dec cx
jmp .loop
.memcpy_end:
pop ds
pop si
pop es
pop di
pop bx
pop ax
pop bp
! 109 endasm
!BCC_ENDASM
! 110 # 6 "main.c"
! 6 }
ret
! 7 # 1 "std_
! 0 singos/stdio.h"
! 1 void print(string);
!BCC_EOS
! 2
! 3 void print(string)
! 4 char* string;
export _print
_print:
!BCC_EOS
! 5 {
! 6 #asm
!BCC_ASM
_print.string set 2
push bp
mov bp,sp
mov si,4[bp]
call 0x0000:0x7C47
pop bp
! 12 endasm
!BCC_ENDASM
! 13 }
ret
! 14
! 15 void print_stack(argument)
! 16 {
export _print_stack
_print_stack:
! 17 #asm
!BCC_ASM
_print_stack.argument set 2
push bp
mov bp,sp
push ds
push ax
mov ax, ss
mov ds, ax
mov si,4[bp]
call 0x0000:0x7C47
pop ax
pop ds
pop bp
! 31 endasm
!BCC_ENDASM
! 32 }
ret
! 33
! 34 dump_ax_return(input)
! 35 void* input;
export _dump_ax_return
_dump_ax_return:
!BCC_EOS
! 36 {
! 37 return input;
push bp
mov bp,sp
push di
push si
mov ax,4[bp]
pop si
pop di
pop bp
ret
!BCC_EOS
! 38 }
! 39
! 40 void dump_ax(input)
! 41 void* input;
export _dump_ax
_dump_ax:
!BCC_EOS
! 42 {
! 43
! 44 dump_ax_return(input)
push bp
mov bp,sp
push di
push si
! 45 #asm
! Debug: list * void input = [S+6+2] (used reg = )
push 4[bp]
! Debug: func () int = dump_ax_return+0 (used reg = )
call _dump_ax_return
inc sp
inc sp
!BCC_EOS
!BCC_ASM
_dump_ax.input set 8
.dump_ax.input set 4
push bp
mov bp,sp
call 0x000:0x7C2A
pop bp
! 50 endasm
!BCC_ENDASM
!BCC_EOS
! 51 }
pop si
pop di
pop bp
ret
! 52
! 53 void print_newline()
! 54 {
export _print_newline
_print_newline:
! 55 #asm
!BCC_ASM
printCRLF:
mov ah, #0xE
mov al, #13
int #0x10
mov al, #10
int #0x10
ret
! 63 endasm
!BCC_ENDASM !BCC_ENDASM
! 54 } ! 64 }
ret ret
! 55 # 1 "driver/disk.h" ! 65 # 1 "driver/disk.h"
! 1 int data_from_disk(index, number_sectors, data_buffer, data_buffer_segment); ! 1 int data_from_disk(index, number_sectors, data_buffer, data_buffer_segment);
!BCC_EOS !BCC_EOS
! 2 int disk_service_read_data_from_disk(index, number_sectors, data_buffer, data_buffer_segment); ! 2 int disk_service_read_data_from_disk(index, number_sectors, data_buffer, data_buffer_segment);
@ -142,212 +336,231 @@ _disk_service_read_data_from_disk.index set 2
!BCC_ENDASM !BCC_ENDASM
! 52 } ! 52 }
ret ret
! 53 # 10 "main.c" ! 53 # 11 "main.c"
! 10 #define SPACE_VBR_RECORD 2048 ! 11 #define SPACE_VBR_RECORD 2048
! 11 ! 12
! 12 #define DEFAULT_ENTRY_SIZE 1 ! 13 #define DEFAULT_ENTRY_SIZE 1
! 13 ! 14
! 14 #define NUMBER_OF_MBR_PARTITIONS 4 ! 15 #def
! 15 ! 15 ine NUMBER_OF_MBR_PARTITIONS 4
! 16 #define DEFAULT_DATA_POINTER_SIZE 4 ! 16
! 17 ! 17 #define DEFAULT_DATA_POINTER_SIZE 4
! 18 ! 18
! 19 ! 19
! 20 void dump_ax(input); ! 20
! 21 void dump_ax(input);
!BCC_EOS !BCC_EOS
! 21 void print_stack(argument); ! 22 void print_stack(argument);
!BCC_EOS !BCC_EOS
! 22 void print_newline(); ! 23 void print_newline();
!BCC_EOS !BCC_EOS
! 23 ! 24
! 24 typedef struct Directory_Table Directory_Table; ! 25 typedef struct Directory_Table Directory_Table;
!BCC_EOS !BCC_EOS
! 25 typedef struct Struct_Table_Entry Table_Entry; ! 26 typedef struct Struct_Table_Entry Table_Entry;
!BCC_EOS !BCC_EOS
! 26 typedef struct struct_partition_control partition_control; ! 27 typedef struct struct_partition_control partition_control;
!BCC_EOS !BCC_EOS
! 27 typedef struct File_System_Control_Information FSCI; ! 28 typedef struct File_System_Control_Information FSCI;
!BCC_EOS !BCC_EOS
! 28 typedef struct meta_information_format mif; ! 29 typedef struct meta_information_format mif;
!BCC_EOS !BCC_EOS
! 29 typedef struct tag_record tag_record; ! 30 typedef struct tag_record tag_record;
!BCC_EOS !BCC_EOS
! 30 typedef struct lsfs_file lsfs_file; ! 31 typedef struct lsfs_file lsfs_file;
!BCC_EOS !BCC_EOS
! 31 ! 32 typedef struct Parameter_Struct Parameter_Struct;
! 32 typedef enum Table_Entry_Kind
! 33 {
! 34
! 35 ENTRY_EMPTY = 0,
! 36 ENTRY_FILE = 1,
! 37 ENTRY_DIRECTORY = 2,
! 38 } Table_Entry_Kind;
!BCC_EOS !BCC_EOS
! 39 ! 33
! 40 typedef enum Service_Action ! 34 typedef enum Table_Entry_Kind
! 41 { ! 35 {
! 42 SERIVCE_LOAD_DISK = 1, ! 36
! 43 SERVICE_FIND_ENTRY = 2, ! 37 ENTRY_EMPTY = 0,
! 44 SERIVCE_READ_DATA = 3, ! 38 ENTRY_FILE = 1,
! 45 SERIVCE_WRITE_DATA = 4, ! 39 ENTRY_DIRECTORY = 2,
! 46 ! 40 } Table_Entry_Kind;
! 47 } Service_Action;
!BCC_EOS !BCC_EOS
! 41
! 42 typedef enum Service_Action
! 43 {
! 44 SERIVCE_LOAD_DISK = 1,
! 45 SERVICE_FIND_ENTRY = 2,
! 46 SERIVCE_READ_DATA = 3,
! 47 SERIVCE_WRITE_DATA = 4,
! 48 ! 48
! 49 int number_low; ! 49 } Service_Action;
!BCC_EOS
! 50
! 51 struct Struct_Table_Entry
! 52 {
! 53 char filename[256];
!BCC_EOS
! 54 long file_id[2];
!BCC_EOS
! 55 long file_size[2];
!BCC_EOS
! 56 void* ext_file_data_low;
!BCC_EOS
! 57 void* ext_file_data_high;
!BCC_EOS
! 58 long number_sector_s;
!BCC_EOS !BCC_EOS
! 50 int selector; ! 59 short entry_kind;
!BCC_EOS !BCC_EOS
! 51 ! 60 short extra_control_bits1;
! 52 struct Struct_Table_Entry
! 53 {
! 54 char filename[256];
!BCC_EOS !BCC_EOS
! 55 long file_id[2]; ! 61 short extra_control_bits2;
!BCC_EOS !BCC_EOS
! 56 long file_size[2]; ! 62 short extra_control_bits3;
!BCC_EOS !BCC_EOS
! 57 void* ext_file_data_low; ! 63 long table_entry_sector_index[2];
!BCC_EOS !BCC_EOS
! 58 void* ext_file_data_high; ! 64 long data_pointer[27 * 2];
!BCC_EOS !BCC_EOS
! 59 long number_sector_s; ! 65 };
!BCC_EOS !BCC_EOS
! 60 short entry_kind; ! 66
! 67 struct File_System_Control_Information
! 68 {
! 69 char filesystem_information[256];
!BCC_EOS !BCC_EOS
! 61 short extra_control_bits1; ! 70 long master_table_index[2];
!BCC_EOS !BCC_EOS
! 62 short extra_control_bits2; ! 71 long this_partition_offset_on_disk[2];
!BCC_EOS !BCC_EOS
! 63 short extra_control_bits3; ! 72 long next_free_sector[2];
!BCC_EOS !BCC_EOS
! 64 long table_entry_sector_index[2]; ! 73 long next_uniqe_id[2];
!BCC_EOS !BCC_EOS
! 65 long data_pointer[27 * 2]; ! 74 long next_sector_reuse_pointer[2];
!BCC_EOS !BCC_EOS
! 66 }; ! 75 long last_sector_index_on_partition[2];
!BCC_EOS !BCC_EOS
! 67 ! 76 long maximum_sectors_on_disk[2];
! 68 struct File_System_Control_Information
! 69 {
! 70 char filesystem_information[256];
!BCC_EOS !BCC_EOS
! 71 long master_table_index[2]; ! 77 long sector_size_on_disk[2];
!BCC_EOS !BCC_EOS
! 72 long this_partition_offset_on_disk[2]; ! 78 long not_used[48];
!BCC_EOS !BCC_EOS
! 73 long next_free_sector[2]; ! 79
! 80 };
!BCC_EOS !BCC_EOS
! 74 long next_uniqe_id[2]; ! 81
! 82 typedef struct Directory_Table
! 83 {
! 84 Table_Entry entries[16 ];
!BCC_EOS !BCC_EOS
! 75 long next_sector_reuse_pointer[2]; ! 85
! 86 };
!BCC_EOS !BCC_EOS
! 76 long last_sector_index_on_partition[2]; ! 87
! 88 struct Parameter_Struct
! 89 {
! 90 char* path;
!BCC_EOS !BCC_EOS
! 77 long maximum_sectors_on_disk[2]; ! 91 char* new_path;
!BCC_EOS !BCC_EOS
! 78 long sector_size_on_disk[2]; ! 92 int buffer_segment;
!BCC_EOS !BCC_EOS
! 79 long not_used[48]; ! 93 int buffer_address;
!BCC_EOS !BCC_EOS
! 80 ! 94 int buffer_size;
! 81 };
!BCC_EOS !BCC_EOS
! 82 ! 95 int data_length;
! 83 typedef struct Directory_Table
! 84 {
! 85 Table_Entry entries[16 ];
!BCC_EOS !BCC_EOS
! 86 ! 96 int byte_offset_into_file;
! 87 };
!BCC_EOS !BCC_EOS
! 88 ! 97 Table_Entry_Kind entry_kind;
! 89
! 90 void print(string);
!BCC_EOS !BCC_EOS
! 91 ! 98 };
! 92 int main(selector, parameter_struct) !BCC_EOS
! 93 int selector; ! 99
! 100 int main(selector, pointer_parameter_segment, pointer_parameter_struct)
! 101 int selector;
export _main export _main
_main: _main:
!BCC_EOS !BCC_EOS
! 94 void* parameter ! 102 void* pointer_parameter_segment;
! 94 _struct; !BCC_EOS
! 103 void* pointer_parameter_struct
! 103 ;
!BCC_EOS
! 104 {
! 105
! 106
! 107
! 108 FSCI fsci;
!BCC_EOS !BCC_EOS
! 95 { ! 109 Service_Action service_action;
! 96
! 97
! 98
! 99 FSCI fsci;
!BCC_EOS !BCC_EOS
! 100 Service_Action service_action; ! 110 Directory_Table current_table;
!BCC_EOS !BCC_EOS
! 101 Directory_Table current_table; ! 111 Parameter_Struct parameter_struct;
!BCC_EOS !BCC_EOS
! 102 int local_segment = 0x7e0; ! 112 int local_segment = 0x7e0;
push bp push bp
mov bp,sp mov bp,sp
push di push di
push si push si
add sp,#-$2204 add sp,#-$2214
! Debug: eq int = const $7E0 to int local_segment = [S+$220A-$220A] (used reg = ) ! Debug: eq int = const $7E0 to int local_segment = [S+$221A-$221A] (used reg = )
mov ax,#$7E0 mov ax,#$7E0
mov -$2208[bp],ax mov -$2218[bp],ax
!BCC_EOS !BCC_EOS
! 103 int stack_segment = 0x8fc0; ! 113 int stack_segment = 0x8fc0;
dec sp dec sp
dec sp dec sp
! Debug: eq unsigned int = const $8FC0 to int stack_segment = [S+$220C-$220C] (used reg = ) ! Debug: eq unsigned int = const $8FC0 to int stack_segment = [S+$221C-$221C] (used reg = )
mov ax,#$8FC0 mov ax,#$8FC0
mov -$220A[bp],ax mov -$221A[bp],ax
!BCC_EOS !BCC_EOS
! 104 long index_as_long; ! 114 long index_as_long;
!BCC_EOS !BCC_EOS
! 105 ! 115
! 106 char local_path[256]; ! 116 char local_path[256];
!BCC_EOS !BCC_EOS
! 107 service_action = selector; ! 117 service_action = selector;
add sp,#-$104 add sp,#-$104
! Debug: eq int selector = [S+$2310+2] to int service_action = [S+$2310-$208] (used reg = ) ! Debug: eq int selector = [S+$2320+2] to int service_action = [S+$2320-$208] (used reg = )
mov ax,4[bp] mov ax,4[bp]
mov -$206[bp],ax mov -$206[bp],ax
!BCC_EOS !BCC_EOS
! 108 ! 118
! 109 switch (service_action) ! 119 switch (service_action)
mov ax,-$206[bp] mov ax,-$206[bp]
! 110 { ! 120 {
br .3 br .3
! 111 case SERIVCE_LOAD_DISK: ! 121 case SERIVCE_LOAD_DISK:
! 112 { ! 122 {
.4: .4:
! 113 ! 123
! 114 ! 124
! 115 ! 125
! 116 ! 126
! 117 index_as_long = parameter_struct; ! 127 index_as_long = pointer_parameter_struct;
! Debug: eq * void parameter_struct = [S+$2310+4] to long index_as_long = [S+$2310-$2210] (used reg = ) ! Debug: eq * void pointer_parameter_struct = [S+$2320+6] to long index_as_long = [S+$2320-$2220] (used reg = )
mov ax,6[bp] mov ax,8[bp]
xor bx,bx xor bx,bx
mov -$220E[bp],ax mov -$221E[bp],ax
mov -$220C[bp],bx mov -$221C[bp],bx
!BCC_EOS !BCC_EOS
! 118 disk_service_read_data_from_disk(index_as_long, 1, &fsci, stack_segment); ! 128 disk_service_read_data_from_disk(index_as_long, 1, &fsci, stack_segment);
! Debug: list int stack_segment = [S+$2310-$220C] (used reg = ) ! Debug: list int stack_segment = [S+$2320-$221C] (used reg = )
push -$220A[bp] push -$221A[bp]
! Debug: list * struct File_System_Control_Information fsci = S+$2312-$206 (used reg = ) ! Debug: list * struct File_System_Control_Information fsci = S+$2322-$206 (used reg = )
lea bx,-$204[bp] lea bx,-$204[bp]
push bx push bx
! Debug: list int = const 1 (used reg = ) ! Debug: list int = const 1 (used reg = )
mov ax,*1 mov ax,*1
push ax push ax
! Debug: list long index_as_long = [S+$2316-$2210] (used reg = ) ! Debug: list long index_as_long = [S+$2326-$2220] (used reg = )
push -$220C[bp] push -$221C[bp]
push -$220E[bp] push -$221E[bp]
! Debug: func () int = disk_service_read_data_from_disk+0 (used reg = ) ! Debug: func () int = disk_service_read_data_from_disk+0 (used reg = )
call _disk_service_read_data_from_disk call _disk_service_read_data_from_disk
add sp,*$A add sp,*$A
!BCC_EOS !BCC_EOS
! 119 print("File System has been loaded: "); ! 129 print("File System has been loaded: ");
! Debug: list * char = .5+0 (used reg = ) ! Debug: list * char = .5+0 (used reg = )
mov bx,#.5 mov bx,#.5
push bx push bx
@ -356,12 +569,12 @@ call _print
inc sp inc sp
inc sp inc sp
!BCC_EOS !BCC_EOS
! 120 print_newline(); ! 130 print_newline();
! Debug: func () void = print_newline+0 (used reg = ) ! Debug: func () void = print_newline+0 (used reg = )
call _print_newline call _print_newline
!BCC_EOS !BCC_EOS
! 121 print_stack(fsci.filesystem_information); ! 131 print_stack(fsci.filesystem_information);
! Debug: list * char fsci = S+$2310-$206 (used reg = ) ! Debug: list * char fsci = S+$2320-$206 (used reg = )
lea bx,-$204[bp] lea bx,-$204[bp]
push bx push bx
! Debug: func () void = print_stack+0 (used reg = ) ! Debug: func () void = print_stack+0 (used reg = )
@ -369,33 +582,62 @@ call _print_stack
inc sp inc sp
inc sp inc sp
!BCC_EOS !BCC_EOS
! 122 print_newline(); ! 132 print_newline();
! Debug: func () void = print_newline+0 (used reg = ) ! Debug: func () void = print_newline+0 (used reg = )
call _print_newline call _print_newline
!BCC_EOS !BCC_EOS
! 123 } break; ! 133 } break;
br .1 br .1
!BCC_EOS !BCC_EOS
! 124 case SERVICE_FIND_ENTRY: ! 134 case SERVICE_FIND_ENTRY:
! 125 { ! 135 {
.6: .6:
! 126 disk_service_read_data_from_disk(fsci.master_table_index[0], 16 , &current_table, stack_segment); ! 136 memcpy(&parameter_struct, stack_segment, pointer_parameter_struct, pointer_parameter_segment, sizeof(Parameter_Struct));
! Debug: list int stack_segment = [S+$2310-$220C] (used reg = ) ! Debug: list int = const $10 (used reg = )
push -$220A[bp] mov ax,*$10
! Debug: list * struct Directory_Table current_table = S+$2312-$2208 (used reg = ) push ax
! Debug: list * void pointer_parameter_segment = [S+$2322+4] (used reg = )
push 6[bp]
! Debug: list * void pointer_parameter_struct = [S+$2324+6] (used reg = )
push 8[bp]
! Debug: list int stack_segment = [S+$2326-$221C] (used reg = )
push -$221A[bp]
! Debug: list * struct Parameter_Struct parameter_struct = S+$2328-$2218 (used reg = )
lea bx,-$2216[bp]
push bx
! Debug: func () void = memcpy+0 (used reg = )
call _memcpy
add sp,*$A
!BCC_EOS
! 137 dump_ax(parameter_struct.buffer_size);
! Debug: list int parameter_struct = [S+$2320-$2210] (used reg = )
push -$220E[bp]
! Debug: func () void = dump_ax+0 (used reg = )
call _dump_ax
inc sp
inc sp
!BCC_EOS
! 138 print_newline();
! Debug: func () void = print_newline+0 (used reg = )
call _print_newline
!BCC_EOS
! 139 disk_service_read_data_from_disk(fsci.master_table_index[0], 16 , &current_table, stack_segment);
! Debug: list int stack_segment = [S+$2320-$221C] (used reg = )
push -$221A[bp]
! Debug: list * struct Directory_Table current_table = S+$2322-$2208 (used reg = )
lea bx,-$2206[bp] lea bx,-$2206[bp]
push bx push bx
! Debug: list int = const $10 (used reg = ) ! Debug: list int = const $10 (used reg = )
mov ax,*$10 mov ax,*$10
push ax push ax
! Debug: list long fsci = [S+$2316-$106] (used reg = ) ! Debug: list long fsci = [S+$2326-$106] (used reg = )
push -$102[bp] push -$102[bp]
push -$104[bp] push -$104[bp]
! Debug: func () int = disk_service_read_data_from_disk+0 (used reg = ) ! Debug: func () int = disk_service_read_data_from_disk+0 (used reg = )
call _disk_service_read_data_from_disk call _disk_service_read_data_from_disk
add sp,*$A add sp,*$A
!BCC_EOS !BCC_EOS
! 127 print("Current table: "); ! 140 print("Current table: ");
! Debug: list * char = .7+0 (used reg = ) ! Debug: list * char = .7+0 (used reg = )
mov bx,#.7 mov bx,#.7
push bx push bx
@ -404,12 +646,12 @@ call _print
inc sp inc sp
inc sp inc sp
!BCC_EOS !BCC_EOS
! 128 print_newline(); ! 141 print_newline();
! Debug: func () void = print_newline+0 (used reg = ) ! Debug: func () void = print_newline+0 (used reg = )
call _print_newline call _print_newline
!BCC_EOS !BCC_EOS
! 129 print_stack(current_table.entries[0].filename); ! 142 print_stack(current_table.entries[0].filename);
! Debug: list * char current_table = S+$2310-$2208 (used reg = ) ! Debug: list * char current_table = S+$2320-$2208 (used reg = )
lea bx,-$2206[bp] lea bx,-$2206[bp]
push bx push bx
! Debug: func () void = print_stack+0 (used reg = ) ! Debug: func () void = print_stack+0 (used reg = )
@ -417,12 +659,12 @@ call _print_stack
inc sp inc sp
inc sp inc sp
!BCC_EOS !BCC_EOS
! 130 print_newline(); ! 143 print_newline();
! Debug: func () void = print_newline+0 (used reg = ) ! Debug: func () void = print_newline+0 (used reg = )
call _print_newline call _print_newline
!BCC_EOS !BCC_EOS
! 131 print_stack(current_table.entries[1].filename); ! 144 print_stack(current_table.entries[1].filename);
! Debug: list * char current_table = S+$2310-$2008 (used reg = ) ! Debug: list * char current_table = S+$2320-$2008 (used reg = )
lea bx,-$2006[bp] lea bx,-$2006[bp]
push bx push bx
! Debug: func () void = print_stack+0 (used reg = ) ! Debug: func () void = print_stack+0 (used reg = )
@ -430,12 +672,12 @@ call _print_stack
inc sp inc sp
inc sp inc sp
!BCC_EOS !BCC_EOS
! 132 print_newline(); ! 145 print_newline();
! Debug: func () void = print_newline+0 (used reg = ) ! Debug: func () void = print_newline+0 (used reg = )
call _print_newline call _print_newline
!BCC_EOS !BCC_EOS
! 133 print_stack(current_table.entries[2].filename); ! 146 print_stack(current_table.entries[2].filename);
! Debug: list * char current_table = S+$2310-$1E08 (used reg = ) ! Debug: list * char current_table = S+$2320-$1E08 (used reg = )
lea bx,-$1E06[bp] lea bx,-$1E06[bp]
push bx push bx
! Debug: func () void = print_stack+0 (used reg = ) ! Debug: func () void = print_stack+0 (used reg = )
@ -443,17 +685,19 @@ call _print_stack
inc sp inc sp
inc sp inc sp
!BCC_EOS !BCC_EOS
! 134 print_newline(); ! 147 print_newline();
! Debug: func () void = print_newline+0 (used reg = ) ! Debug: func () void = print_newline+0 (used reg = )
call _print_newline call _print_newline
!BCC_EOS !BCC_EOS
! 135 } break; ! 148 } break;
jmp .1 jmp .1
!BCC_EOS !BCC_EOS
! 136 case SERIVCE_READ_DATA: ! 149 case SERIVCE_READ_DATA:
! 137 { ! 150 {
.8: .8:
! 138 print("Hit READ case"); ! 151 # 159
! 159
! 160 print("Hit READ case");
! Debug: list * char = .9+0 (used reg = ) ! Debug: list * char = .9+0 (used reg = )
mov bx,#.9 mov bx,#.9
push bx push bx
@ -462,13 +706,13 @@ call _print
inc sp inc sp
inc sp inc sp
!BCC_EOS !BCC_EOS
! 139 } break; ! 161 } break;
jmp .1 jmp .1
!BCC_EOS !BCC_EOS
! 140 case SERIVCE_WRITE_DATA: ! 162 case SERIVCE_WRITE_DATA:
! 141 { ! 163 {
.A: .A:
! 142 print("Hit WRITE case"); ! 164 print("Hit WRITE case");
! Debug: list * char = .B+0 (used reg = ) ! Debug: list * char = .B+0 (used reg = )
mov bx,#.B mov bx,#.B
push bx push bx
@ -477,13 +721,13 @@ call _print
inc sp inc sp
inc sp inc sp
!BCC_EOS !BCC_EOS
! 143 } break; ! 165 } break;
jmp .1 jmp .1
!BCC_EOS !BCC_EOS
! 144 default: ! 166 default:
! 145 { ! 167 {
.C: .C:
! 146 print("Default case"); ! 168 print("Default case");
! Debug: list * char = .D+0 (used reg = ) ! Debug: list * char = .D+0 (used reg = )
mov bx,#.D mov bx,#.D
push bx push bx
@ -492,10 +736,10 @@ call _print
inc sp inc sp
inc sp inc sp
!BCC_EOS !BCC_EOS
! 147 } ! 169 }
! 148 } ! 170 }
! 149 ! 171
! 150 return 0; ! 172 return 0;
jmp .1 jmp .1
.3: .3:
sub ax,*1 sub ax,*1
@ -508,7 +752,7 @@ sub ax,*1
je .A je .A
jmp .C jmp .C
.1: .1:
..FFFF = -$2310 ..FFFF = -$2320
xor ax,ax xor ax,ax
lea sp,-4[bp] lea sp,-4[bp]
pop si pop si
@ -516,131 +760,10 @@ pop di
pop bp pop bp
ret ret
!BCC_EOS !BCC_EOS
! 151 ! 173
! 152 } ! 174 }
! 153 # 157 ! 175
! 157 void print(string)
! Register BX used in function main ! Register BX used in function main
! 158 char* string;
export _print
_print:
!BCC_EOS
! 159 {
! 160 #asm
!BCC_ASM
_print.string set 2
push bp
mov bp,sp
mov si,4[bp]
call 0x0000:0x7C47
pop bp
! 166 endasm
!BCC_ENDASM
! 167 }
ret
! 168
! 169 void print_stack(argument)
! 170 {
export _print_stack
_print_stack:
! 171 #asm
!BCC_ASM
_print_stack.argument set 2
push bp
mov bp,sp
push ds
push ax
mov ax, ss
mov ds, ax
mov si,4[bp]
call 0x0000:0x7C47
pop ax
pop ds
pop bp
! 185 endasm
!BCC_ENDASM
! 186 }
ret
! 187
! 188 dump_ax_return(input)
! 189 void* input;
export _dump_ax_return
_dump_ax_return:
!BCC_EOS
! 190 {
! 191 return input;
push bp
mov bp,sp
push di
push si
mov ax,4[bp]
pop si
pop di
pop bp
ret
!BCC_EOS
! 192 }
! 193
! 194 void dump_ax(input)
! 195 void* input;
export _dump_ax
_dump_ax:
!BCC_EOS
! 196 {
! 197
! 198 dump_ax_return(input)
push bp
mov bp,sp
push di
push si
! 199 #asm
! Debug: list * void input = [S+6+2] (used reg = )
push 4[bp]
! Debug: func () int = dump_ax_return+0 (used reg = )
call _dump_ax_return
inc sp
inc sp
!BCC_EOS
!BCC_ASM
_dump_ax.input set 8
.dump_ax.input set 4
push bp
mov bp,sp
call 0x000:0x7C2A
pop bp
! 204 endasm
!BCC_ENDASM
!BCC_EOS
! 205 }
pop si
pop di
pop bp
ret
! 206
! 207 void print_newline()
! 208 {
export _print_newline
_print_newline:
! 209 #asm
!BCC_ASM
printCRLF:
mov ah, #0xE
mov al, #13
int #0x10
mov al, #10
int #0x10
ret
! 217 endasm
!BCC_ENDASM
! 218 # 217
! 217 }
ret
! 218
.D: .D:
.E: .E:
.ascii "Default case" .ascii "Default case"
@ -662,7 +785,5 @@ ret
.ascii "File System has been loaded: " .ascii "File System has been loaded: "
.byte 0 .byte 0
.bss .bss
.comm _selector,2
.comm _number_low,2
! 0 errors detected ! 0 errors detected

64
std_singos/stdio.h
View File

@ -0,0 +1,64 @@
void print(string);
void print(string)
char* string;
{
#asm
push bp
mov bp,sp
mov si,4[bp]
call 0x0000:0x7C47
pop bp
#endasm
}
void print_stack(argument)
{
#asm
push bp
mov bp,sp
push ds
push ax
mov ax, ss
mov ds, ax
mov si,4[bp]
call 0x0000:0x7C47
pop ax
pop ds
pop bp
#endasm
}
dump_ax_return(input)
void* input;
{
return input;
}
void dump_ax(input)
void* input;
{
// Force the variable in ax
dump_ax_return(input)
#asm
push bp
mov bp,sp
call 0x000:0x7C2A
pop bp
#endasm
}
void print_newline()
{
#asm
printCRLF:
mov ah, #0xE
mov al, #13
int #0x10
mov al, #10
int #0x10
ret
#endasm
}

56
std_singos/string.h
View File

@ -1,4 +1,5 @@
void strcpy (destination, destination_segment, source, source_segment ); void strcpy (destination, destination_segment, source, source_segment );
void memcpy (destination, destination_segment, source, source_segment, num_bytes );
void strcpy (destination, destination_segment, source, source_segment ) void strcpy (destination, destination_segment, source, source_segment )
char *destination; char *destination;
@ -52,3 +53,58 @@ int source_segment;
#endasm #endasm
} }
void memcpy (destination, destination_segment, source, source_segment, num_bytes)
void *destination;
int destination_segment;
void *source;
int source_segment;
int num_bytes;
{
#asm
; copy two strings
; IN si: the first (zero terminated) string
; IN di: the second (zero terminated) string
; OUT SF and ZF (same semantics as cmp)
#define DESTINATION 4[bp];
#define DESTINATION_SEGMENT 6[bp];
#define SOURCE 8[bp];
#define SOURCE_SEGMENT 10[bp];
#define NUM_BYTES 12[bp];
push bp
mov bp,sp
memcpy:
push ax
push bx
push di
push es
push si
push ds
mov ax, DESTINATION;
mov di, ax
mov ax, DESTINATION_SEGMENT;
mov es, ax
mov ax, SOURCE;
mov si, ax
mov ax, SOURCE_SEGMENT;
mov ds, ax
mov cx, NUM_BYTES
.memcpy_loop:
movsb
cmp cx, 0x0
je .end
dec cx
jmp .loop
.memcpy_end:
pop ds
pop si
pop es
pop di
pop bx
pop ax
pop bp
#endasm
}
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