Import backup from 2004-01-07
This commit is contained in:
parent
af6087ecec
commit
0a546f1467
31
fat12.c
31
fat12.c
@ -5,33 +5,43 @@
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byte *fat12_readFile(char *fileName, DiskDevice *dd)
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byte *fat12_readFile(char *fileName, DiskDevice *dd)
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{
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{
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Fat12File *fp = fat12_getFileHandle(fileName, dd);
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if (!fp)
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return 0;
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}
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}
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Fat12File *fat12_getFileHandle(char *fileName)
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Fat12File *fat12_getFileHandle(char *fileName, DiskDevice *dd)
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{
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{
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if (strlen(fileName) < 1)
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if (strlen(fileName) < 1)
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return 0;
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return 0;
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if (fileName[strlen(fileName)-1] == '/')
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if (fileName[strlen(fileName)-1] == '/')
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return 0;
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return 0;
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}
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//The trailing slash ('/') character should not be included in the directory string
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Fat12Directory *fat12_getDirectoryHandle(char *directory, DiskDevice *dd)
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{
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dword numDirectories = 0;
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dword numDirectories = 0;
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int a = 0;
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int a = 0;
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for (;;) //first count how many directories deep we are looking
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for (;;) //first count how many directories deep we are looking
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{
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{
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if (fileName[a] == '/')
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if (directory[a] == '/')
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numDirectories++;
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numDirectories++;
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a++;
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a++;
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if (!fileName[a])
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if (!directory[a])
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break;
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break;
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}
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}
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for (a = 0; ;a++) //next split apart the filename string into parts for each directory and file
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for (a = 0; ;a++) //next split apart the filename string into parts for each directory and file
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{
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{
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if (fileName[a] == 0)
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if (directory[a] == 0)
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break;
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break;
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if (fileName[a] == '/')
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if (directory[a] == '/')
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fileName[a] = 0;
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directory[a] = 0;
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}
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}
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char **levels = (char**)malloc((numDirectories+1)*sizeof(char *));
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char **levels = (char**)malloc((numDirectories+1)*sizeof(char *));
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char *dir = fileName;
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char *dir = directory;
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for (a = 0; a <= numDirectories; a++)
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for (a = 0; a <= numDirectories; a++)
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{
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{
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levels[a] = dir;
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levels[a] = dir;
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@ -42,16 +52,15 @@ Fat12File *fat12_getFileHandle(char *fileName)
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break;
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break;
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}
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}
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dir++;
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dir++;
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}
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for (a = 0; a <= numDirectories; a++)
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{
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printf("directory: %s|\n", levels[a]);
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}
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}
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//at this point we have an array of "strings" (character pointers) called levels
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//at this point we have an array of "strings" (character pointers) called levels
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// its length is numDirectories+1, levels[numDirectores] points to the actual file name
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// its length is numDirectories+1, levels[numDirectores] points to the actual file name
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free(levels);
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free(levels);
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}
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}
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41
fat12.h
41
fat12.h
@ -11,9 +11,46 @@ typedef struct {
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dword location;
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dword location;
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} __attribute__((packed)) Fat12Directory;
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} __attribute__((packed)) Fat12Directory;
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typedef struct {
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char fileName[8];
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char ext[3];
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byte attributes;
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dword createTime;
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word createDate;
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word accessDate;
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word unused0;
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word modifiedDate;
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word modifiedTime;
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word firstCluster;
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dword fileSize;
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} __attribute__((packed)) Fat12DirectoryEntry;
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typedef struct {
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byte jump[3];
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byte sysName[8];
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word bytesPerSector;
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byte sectorsPerCluster;
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word reservedSectors;
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byte FATcount;
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word maxRootEntries;
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word totalSectors1;
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byte mediaDescriptor;
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word sectorsPerFAT;
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word sectorsPerTrack;
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word headCount;
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dword hiddenSectors;
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dword totalSectors2;
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byte driveNumber;
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byte reserved1;
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byte extBootSignature;
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dword volumeSerial;
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char volumeLabel[11];
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char fileSystemID[8];
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} __attribute__((packed)) Fat12BootSector;
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byte *fat12_readFile(char *fileName, DiskDevice *dd);
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byte *fat12_readFile(char *fileName, DiskDevice *dd);
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Fat12File *fat12_getFileHandle(char *fileName);
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Fat12File *fat12_getFileHandle(char *fileName, DiskDevice *dd);
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Fat12Directory *fat12_getDirectoryHandle(char *directory);
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Fat12Directory *fat12_getDirectoryHandle(char *directory, DiskDevice *dd);
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BIN
kernel.bin
Normal file
BIN
kernel.bin
Normal file
Binary file not shown.
2
kernel.c
2
kernel.c
@ -36,7 +36,7 @@ extern int puts(char *str);
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extern int putDec(int number);
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extern int putDec(int number);
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extern int putDecu(dword number);
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extern int putDecu(dword number);
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extern void strcpy(char *dest, char *src);
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extern void strcpy(char *dest, char *src);
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extern void memcpy(dword dest, dword src, dword n);
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extern void memcpy(void *dest, void *src, dword n);
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extern dword strlen(char *str);
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extern dword strlen(char *str);
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#include "fat12.c"
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#include "fat12.c"
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182
lst/LDout.doc
Normal file
182
lst/LDout.doc
Normal file
@ -0,0 +1,182 @@
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Allocating common symbols
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Common symbol size file
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_mouse_y 0x10 kernel.o
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_video_mode 0x100 kernel.o
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_mm_megabytes 0x10 kernel.o
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_console_memory 0xfa0 kernel.o
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_page_bitmap 0x20000 kernel.o
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_kbdBuffer 0x100 kernel.o
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_video_psetp 0x10 kernel.o
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_mouse_x 0x10 kernel.o
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_mouse_inbuffer 0x10 kernel.o
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Memory Configuration
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Name Origin Length Attributes
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*default* 0x00000000 0xffffffff
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Linker script and memory map
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.text 0xc0106000 0x4000
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0xc0106000 code = .
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0xc0106000 _code = .
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0xc0106000 __code = .
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*(.text)
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.text 0xc0106000 0x358 ks.o
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0xc0106000 start
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*fill* 0xc0106358 0x8 00
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.text 0xc0106360 0x2fa0 kernel.o
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0xc0107c26 _kbdGetKey
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0xc0108eb9 _video_psetp32
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0xc0108602 _vmm_addHeapEntryBlock
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0xc0108ed9 _video_drawConsole
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0xc010898c _pic1_mask
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0xc01087a9 _free
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0xc0108b52 _video_renderChar
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0xc010887b _strcat
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0xc0107f06 _mm_palloc
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0xc0107ebc _mm_pfree
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0xc0108d86 _video_rectf
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0xc0107208 _putc
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0xc0107e7f _mm_pfreen
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0xc0107352 _putHex
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0xc01082d8 _vmm_unmapn
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0xc0108f90 _video_drawConsoleChar
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0xc0108ab0 _kernel_size
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0xc0108297 _vmm_unmap1
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0xc01073ec _mouse_init
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0xc01086f3 _vmm_getFirstHoleHeapEntry
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0xc01073c5 _fdc_sendDOR
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0xc01085e6 _vmm_nextHeapEntry
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0xc0108189 _vmm_map1
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0xc01090d7 _k_init
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0xc0106eb8 _vfs_getDiskDeviceByID
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0xc01075e0 _SCAN2ASCII
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0xc0108a70 _eoi
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0xc0106bd4 _fat12_getDirectoryHandle
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0xc0107cba _kbd_resetLEDs
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0xc0108425 _vmm_coalesceHeapEntry
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0xc01084ef _vmm_moreCore
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0xc0106dac _vfs_readFile
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0xc01089b0 _pic2_mask
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0xc0108abf _video_init
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0xc010886f _enable_ints
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0xc010800e _vmm_init
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0xc01089d7 _restart
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0xc0107cdb _mm_init
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0xc0106cd5 _vfs_init
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0xc0108e25 _video_psetp16
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0xc01076f3 _isr_keyboard
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0xc0108bd2 _video_horiz
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0xc0107faa _mm_freemem
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0xc010882e _outportb
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0xc0108e6b _video_psetp24
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0xc0108ed4 _video_psetpnull
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0xc010749a _isr_mouse
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0xc0108a87 _eoi2
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0xc0106b8e _fat12_getFileHandle
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0xc0108843 _outportw
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0xc0108d2e _video_rect
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0xc0108305 _malloc
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0xc0109281 _isr
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0xc0106ca2 _rd_readSector
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0xc0107660 _SCAN2ASCIISHIFT
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0xc0106e81 _vfs_readSector
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0xc0106360 _stdfont
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0xc0108c78 _video_vert
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0xc0108772 _vmm_heapEntriesLeft
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0xc01088a0 _remap_pics
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0xc01086c4 _vmm_getLastHeapEntry
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0xc0107c77 _kbdWaitKey
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0xc01087f3 _vmm_getHeapEntryByBase
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0xc010810e _vmm_heb_init
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0xc0108378 _vmm_getFreeChunk
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0xc0106f02 _printf
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0xc0108a38 _init_timer
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0xc0108850 _inportb
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0xc0108a31 _halt
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0xc0106b60 _fat12_readFile
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0xc0108875 _disable_ints
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0xc0108dce _video_pset
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0xc0108738 _vmm_getFirstUnusedHeapEntry
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0xc010825e _vmm_mapn
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.text 0xc0109300 0x32c asmfuncs.o
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0xc0109387 _invlpg
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0xc010931a _read_cr3
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0xc010931e _strcmp
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0xc0109453 _puts
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0xc0109472 _putDecu
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0xc0109359 _memcpy
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0xc010938f _writeCursorPosition
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0xc01093d2 _console_scroll
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0xc0109414 _console_cls
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0xc010953a _putDec
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0xc0109344 _strcpy
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0xc010936f _strlen
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0xc01093b5 _getCursorPosition
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0xc0109300 _write_cr0
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0xc010930f _write_cr3
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0xc010930b _read_cr0
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0xc010a000 . = ALIGN (0x1000)
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*fill* 0xc010962c 0x9d4 00
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.data 0xc010a000 0x1000
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0xc010a000 data = .
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0xc010a000 _data = .
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0xc010a000 __data = .
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*(.data)
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.data 0xc010a000 0x10 kernel.o
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0xc010a000 _vid_ptr16
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0xc010a00c _firstHeapEntry
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0xc010a008 _vid_ptr32
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0xc010a004 _vid_ptr24
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0xc010b000 . = ALIGN (0x1000)
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*fill* 0xc010a010 0xff0 00
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.bss 0xc010b000 0x221f0
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0xc010b000 bss = .
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0xc010b000 _bss = .
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0xc010b000 __bss = .
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*(.bss)
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.bss 0xc010b000 0x2c kernel.o
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0xc010b010 _firstDiskDevice
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0xc010b00c _rootDevice
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0xc010b020 _kbdExt
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0xc010b004 _mouse_bytesRead
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0xc010b015 _kbdAscii
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0xc010b000 _videoMode
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0xc010b021 _kbdExt2
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0xc010b022 _ackReason
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0xc010b024 _mm_totalmem
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0xc010b018 _kbdBufferStart
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0xc010b016 _kbdScan
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0xc010b01c _kbdBufferLen
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0xc010b014 _kbdFlags
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0xc010b028 _timer
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0xc010b008 _cursorPosition
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0xc010c000 . = ALIGN (0x1000)
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*fill* 0xc010b02c 0xfd4 00
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COMMON 0xc010c000 0x211f0 kernel.o
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0x0 (size before relaxing)
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0xc010c000 _mouse_y
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0xc010c010 _video_mode
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0xc010c110 _mm_megabytes
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0xc010c120 _console_memory
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0xc010d0c0 _page_bitmap
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0xc012d0c0 _kbdBuffer
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0xc012d1c0 _video_psetp
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0xc012d1d0 _mouse_x
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0xc012d1e0 _mouse_inbuffer
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0xc012d1f0 end = .
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0xc012d1f0 _end = .
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0xc012d1f0 __end = .
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LOAD ks.o
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LOAD kernel.o
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LOAD asmfuncs.o
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OUTPUT(kernel.bin binary)
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.comment 0xc012d1f0 0x14
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.comment 0xc012d1f0 0x14 kernel.o
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460
lst/asmfuncs.lst
Normal file
460
lst/asmfuncs.lst
Normal file
@ -0,0 +1,460 @@
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|
1 ; asmfuncs.asm
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|
2 ; Josh Holtrop
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3 ; Created: 10/23/03
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4 ; Modified: 12/25/03
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5
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6 [extern _putc]
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7 [extern _console_memory]
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8 [extern _cursorPosition]
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9 [extern _video_drawConsole]
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10 [extern _videoMode]
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11
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12 %macro jzfar 1
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13 jnz %%skip
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14 jmp %1
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15 %%skip:
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16
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17 %endmacro
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18
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19 ;stores the parameter to the CR0 register
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20 ;extern dword write_cr0(dword cr0);
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21 [global _write_cr0]
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22 _write_cr0:
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23 00000000 55 push ebp
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24 00000001 89E5 mov ebp, esp
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25 00000003 8B4508 mov eax, [ebp+8]
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26 00000006 0F22C0 mov cr0, eax
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27 00000009 5D pop ebp
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28 0000000A C3 ret
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29
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30 ;returns the value in the CR0 register
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31 ;extern dword read_cr0();
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32 [global _read_cr0]
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33 _read_cr0:
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34 0000000B 0F20C0 mov eax, cr0;
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35 0000000E C3 ret
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36
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37 ;stores the parameter to the CR3 register
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38 ;extern dword write_cr3(dword cr3);
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39 [global _write_cr3]
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40 _write_cr3:
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41 0000000F 55 push ebp
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42 00000010 89E5 mov ebp, esp
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43 00000012 8B4508 mov eax, [ebp+8]
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44 00000015 0F22D8 mov cr3, eax
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45 00000018 5D pop ebp
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46 00000019 C3 ret
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47
|
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48 ;returns the value in the CR3 register
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||||||
|
49 ;extern dword read_cr3();
|
||||||
|
50 [global _read_cr3]
|
||||||
|
51 _read_cr3:
|
||||||
|
52 0000001A 0F20D8 mov eax, cr3;
|
||||||
|
53 0000001D C3 ret
|
||||||
|
54
|
||||||
|
55 ;compares one string to another
|
||||||
|
56 ;returns 0 if the strings are different
|
||||||
|
57 ;extern dword strcmp(char *str1, char *str2);
|
||||||
|
58 [global _strcmp]
|
||||||
|
59 _strcmp:
|
||||||
|
60 0000001E 55 push ebp
|
||||||
|
61 0000001F 89E5 mov ebp, esp
|
||||||
|
62 00000021 56 push esi
|
||||||
|
63 00000022 57 push edi
|
||||||
|
64
|
||||||
|
65 00000023 8B7508 mov esi, [ebp+8]
|
||||||
|
66 00000026 8B7D0C mov edi, [ebp+12]
|
||||||
|
67 strcmp_loop1:
|
||||||
|
68 00000029 AC lodsb
|
||||||
|
69 0000002A 8A27 mov ah, [edi]
|
||||||
|
70 0000002C 47 inc edi
|
||||||
|
71 0000002D 38C4 cmp ah, al
|
||||||
|
72 0000002F 750D jnz strcmp_ne
|
||||||
|
73 00000031 08C0 or al, al
|
||||||
|
74 00000033 7402 jz strcmp_e
|
||||||
|
75 00000035 EBF2 jmp strcmp_loop1
|
||||||
|
76 strcmp_e:
|
||||||
|
77 00000037 B801000000 mov eax, 1
|
||||||
|
78 0000003C EB02 jmp short strcmp_done
|
||||||
|
79 strcmp_ne:
|
||||||
|
80 0000003E 31C0 xor eax, eax
|
||||||
|
81 strcmp_done:
|
||||||
|
82
|
||||||
|
83 00000040 5F pop edi
|
||||||
|
84 00000041 5E pop esi
|
||||||
|
85 00000042 5D pop ebp
|
||||||
|
86 00000043 C3 ret
|
||||||
|
87
|
||||||
|
88 ;copies a string from the source to the destination parameter
|
||||||
|
89 ;extern void strcpy(char *dest, char *src);
|
||||||
|
90 [global _strcpy]
|
||||||
|
91 _strcpy:
|
||||||
|
92 00000044 55 push ebp
|
||||||
|
93 00000045 89E5 mov ebp, esp
|
||||||
|
94 00000047 56 push esi
|
||||||
|
95 00000048 57 push edi
|
||||||
|
96 00000049 8B7D08 mov edi, [ebp+8]
|
||||||
|
97 0000004C 8B750C mov esi, [ebp+12]
|
||||||
|
98 strcpyloop:
|
||||||
|
99 0000004F AC lodsb
|
||||||
|
100 00000050 AA stosb
|
||||||
|
101 00000051 08C0 or al, al
|
||||||
|
102 00000053 75FA jnz strcpyloop
|
||||||
|
103 00000055 5F pop edi
|
||||||
|
104 00000056 5E pop esi
|
||||||
|
105 00000057 5D pop ebp
|
||||||
|
106 00000058 C3 ret
|
||||||
|
107
|
||||||
|
108 ;copies memory of n bytes from src to destination
|
||||||
|
109 ;extern void memcpy(dword dest, dword src, dword n);
|
||||||
|
110 [global _memcpy]
|
||||||
|
111 _memcpy:
|
||||||
|
112 00000059 55 push ebp
|
||||||
|
113 0000005A 89E5 mov ebp, esp
|
||||||
|
114 0000005C 56 push esi
|
||||||
|
115 0000005D 57 push edi
|
||||||
|
116 0000005E 51 push ecx
|
||||||
|
117 0000005F 8B7D08 mov edi, [ebp+8]
|
||||||
|
118 00000062 8B750C mov esi, [ebp+12]
|
||||||
|
119 00000065 8B4D10 mov ecx, [ebp+16]
|
||||||
|
120
|
||||||
|
121 00000068 F3A4 rep movsb
|
||||||
|
122
|
||||||
|
123 0000006A 59 pop ecx
|
||||||
|
124 0000006B 5F pop edi
|
||||||
|
125 0000006C 5E pop esi
|
||||||
|
126 0000006D 5D pop ebp
|
||||||
|
127 0000006E C3 ret
|
||||||
|
128
|
||||||
|
129 ;returns the number of characters in a string
|
||||||
|
130 ;extern dword strlen(char *str);
|
||||||
|
131 [global _strlen]
|
||||||
|
132 _strlen:
|
||||||
|
133 0000006F 55 push ebp
|
||||||
|
134 00000070 89E5 mov ebp, esp
|
||||||
|
135 00000072 56 push esi
|
||||||
|
136 00000073 53 push ebx
|
||||||
|
137 00000074 8B7508 mov esi, [ebp+8]
|
||||||
|
138 00000077 31DB xor ebx, ebx
|
||||||
|
139 strlenloop:
|
||||||
|
140 00000079 AC lodsb
|
||||||
|
141 0000007A 08C0 or al, al
|
||||||
|
142 0000007C 7403 jz strlendone
|
||||||
|
143 0000007E 43 inc ebx
|
||||||
|
144 0000007F EBF8 jmp strlenloop
|
||||||
|
145 strlendone:
|
||||||
|
146 00000081 89D8 mov eax, ebx
|
||||||
|
147 00000083 5B pop ebx
|
||||||
|
148 00000084 5E pop esi
|
||||||
|
149 00000085 5D pop ebp
|
||||||
|
150 00000086 C3 ret
|
||||||
|
151
|
||||||
|
152 ;this function invalidates the page directory/table entry that
|
||||||
|
153 ; would be used to access the memory address given in the parameter
|
||||||
|
154 ;extern void invlpg(dword addr);
|
||||||
|
155 [global _invlpg]
|
||||||
|
156 _invlpg:
|
||||||
|
157 00000087 8B442404 mov eax, [esp+4]
|
||||||
|
158 0000008B 0F0138 invlpg [eax]
|
||||||
|
159 0000008E C3 ret
|
||||||
|
160
|
||||||
|
161
|
||||||
|
162 ;
|
||||||
|
163 ;void writeCursorPosition(word pos)
|
||||||
|
164 ;
|
||||||
|
165 [global _writeCursorPosition]
|
||||||
|
166 _writeCursorPosition:
|
||||||
|
167 0000008F 55 push ebp
|
||||||
|
168 00000090 89E5 mov ebp, esp
|
||||||
|
169
|
||||||
|
170 00000092 50 push eax
|
||||||
|
171 00000093 53 push ebx
|
||||||
|
172 00000094 52 push edx
|
||||||
|
173
|
||||||
|
174 00000095 8B4508 mov eax, [ebp+8] ;cursor position in ax
|
||||||
|
175
|
||||||
|
176 00000098 88C3 mov bl, al
|
||||||
|
177 0000009A 66BAD403 mov dx, 0x03D4
|
||||||
|
178 0000009E B00E mov al, 0x0E
|
||||||
|
179 000000A0 EE out dx, al
|
||||||
|
180
|
||||||
|
181 000000A1 6642 inc dx
|
||||||
|
182 000000A3 88E0 mov al, ah
|
||||||
|
183 000000A5 EE out dx, al
|
||||||
|
184
|
||||||
|
185 000000A6 664A dec dx
|
||||||
|
186 000000A8 B00F mov al, 0x0F
|
||||||
|
187 000000AA EE out dx, al
|
||||||
|
188
|
||||||
|
189 000000AB 6642 inc dx
|
||||||
|
190 000000AD 88D8 mov al, bl
|
||||||
|
191 000000AF EE out dx, al
|
||||||
|
192
|
||||||
|
193 000000B0 5A pop edx
|
||||||
|
194 000000B1 5B pop ebx
|
||||||
|
195 000000B2 58 pop eax
|
||||||
|
196 000000B3 5D pop ebp
|
||||||
|
197
|
||||||
|
198 000000B4 C3 ret
|
||||||
|
199
|
||||||
|
200
|
||||||
|
201 ;
|
||||||
|
202 ;word getCursorPosition()
|
||||||
|
203 ;
|
||||||
|
204 [global _getCursorPosition]
|
||||||
|
205 _getCursorPosition:
|
||||||
|
206 000000B5 53 push ebx
|
||||||
|
207 000000B6 52 push edx
|
||||||
|
208
|
||||||
|
209 000000B7 31C0 xor eax, eax
|
||||||
|
210 000000B9 66BAD403 mov dx, 0x03D4
|
||||||
|
211 000000BD B00E mov al, 0x0E
|
||||||
|
212 000000BF EE out dx, al
|
||||||
|
213
|
||||||
|
214 000000C0 6642 inc dx
|
||||||
|
215 000000C2 EC in al, dx
|
||||||
|
216 000000C3 88C3 mov bl, al
|
||||||
|
217
|
||||||
|
218 000000C5 664A dec dx
|
||||||
|
219 000000C7 B00F mov al, 0x0F
|
||||||
|
220 000000C9 EE out dx, al
|
||||||
|
221
|
||||||
|
222 000000CA 6642 inc dx
|
||||||
|
223 000000CC EC in al, dx
|
||||||
|
224 000000CD 88DC mov ah, bl
|
||||||
|
225
|
||||||
|
226 000000CF 5A pop edx
|
||||||
|
227 000000D0 5B pop ebx
|
||||||
|
228
|
||||||
|
229 000000D1 C3 ret
|
||||||
|
230
|
||||||
|
231
|
||||||
|
232 ;
|
||||||
|
233 ;void console_scroll()
|
||||||
|
234 ;
|
||||||
|
235 [global _console_scroll]
|
||||||
|
236 _console_scroll:
|
||||||
|
237 000000D2 60 pusha
|
||||||
|
238 000000D3 BE[A0000000] mov esi, _console_memory+160
|
||||||
|
239 000000D8 BF[00000000] mov edi, _console_memory
|
||||||
|
240 000000DD B9C0030000 mov ecx, 960 ;(2000-80)/2
|
||||||
|
241 000000E2 F3A5 rep movsd
|
||||||
|
242 000000E4 66B82007 mov ax, 0x0720
|
||||||
|
243 000000E8 B950000000 mov ecx, 80
|
||||||
|
244 000000ED F366AB rep stosw
|
||||||
|
245 000000F0 BE[00000000] mov esi, _console_memory
|
||||||
|
246 000000F5 BF00800BC0 mov edi, 0xC00B8000
|
||||||
|
247 000000FA B9E8030000 mov ecx, 1000
|
||||||
|
248 000000FF F3A5 rep movsd
|
||||||
|
249 00000101 A1[00000000] mov eax, [_videoMode]
|
||||||
|
250 00000106 3D00000000 cmp eax, 0
|
||||||
|
251 0000010B 7405 jz _console_scroll_end
|
||||||
|
252 0000010D E8(00000000) call _video_drawConsole
|
||||||
|
253 _console_scroll_end:
|
||||||
|
254 00000112 61 popa
|
||||||
|
255 00000113 C3 ret
|
||||||
|
256
|
||||||
|
257
|
||||||
|
258
|
||||||
|
259 ;
|
||||||
|
260 ;void console_cls()
|
||||||
|
261 ;
|
||||||
|
262 [global _console_cls]
|
||||||
|
263 _console_cls:
|
||||||
|
264 00000114 60 pusha
|
||||||
|
265 00000115 BF[00000000] mov edi, _console_memory
|
||||||
|
266 0000011A 66B82007 mov ax, 0x0720
|
||||||
|
267 0000011E B9D0070000 mov ecx, 2000
|
||||||
|
268 00000123 F366AB rep stosw
|
||||||
|
269 00000126 6800000000 push dword 0
|
||||||
|
270 0000012B E85FFFFFFF call _writeCursorPosition
|
||||||
|
271 00000130 81C404000000 add esp, 4
|
||||||
|
272 00000136 C705[00000000]0000- mov [_cursorPosition], dword 0
|
||||||
|
273 0000013E 0000
|
||||||
|
274 00000140 BE[00000000] mov esi, _console_memory
|
||||||
|
275 00000145 BF00800BC0 mov edi, 0xC00B8000
|
||||||
|
276 0000014A B9E8030000 mov ecx, 1000
|
||||||
|
277 0000014F F3A5 rep movsd
|
||||||
|
278 00000151 61 popa
|
||||||
|
279 00000152 C3 ret
|
||||||
|
280
|
||||||
|
281
|
||||||
|
282
|
||||||
|
283
|
||||||
|
284 ;
|
||||||
|
285 ;int puts(char *str)
|
||||||
|
286 ;
|
||||||
|
287 [global _puts]
|
||||||
|
288 _puts:
|
||||||
|
289 00000153 55 push ebp
|
||||||
|
290 00000154 89E5 mov ebp, esp
|
||||||
|
291 00000156 56 push esi
|
||||||
|
292 00000157 50 push eax
|
||||||
|
293 00000158 8B7508 mov esi, [ebp+8] ;esi = to string
|
||||||
|
294 puts_loop:
|
||||||
|
295 0000015B AC lodsb
|
||||||
|
296 0000015C 3C00 cmp al, 0
|
||||||
|
297 0000015E 740E jz puts_done
|
||||||
|
298 00000160 50 push eax
|
||||||
|
299 00000161 E8(00000000) call _putc
|
||||||
|
300 00000166 81C404000000 add esp, 4
|
||||||
|
301 0000016C EBED jmp puts_loop
|
||||||
|
302
|
||||||
|
303 puts_done:
|
||||||
|
304 0000016E 58 pop eax
|
||||||
|
305 0000016F 5E pop esi
|
||||||
|
306 00000170 5D pop ebp
|
||||||
|
307 00000171 C3 ret
|
||||||
|
308
|
||||||
|
309
|
||||||
|
310
|
||||||
|
311
|
||||||
|
312 [global _putDecu]
|
||||||
|
313 _putDecu:
|
||||||
|
314 00000172 55 push ebp
|
||||||
|
315 00000173 89E5 mov ebp, esp
|
||||||
|
316 00000175 81EC18000000 sub esp, 24
|
||||||
|
317 0000017B C745FC01000000 mov DWORD [ebp-4], 1
|
||||||
|
318 00000182 C645FB00 mov BYTE [ebp-5], 0
|
||||||
|
319 L2:
|
||||||
|
320 00000186 8B5508 mov edx, DWORD [ebp+8]
|
||||||
|
321 00000189 B8CDCCCCCC mov eax, -858993459
|
||||||
|
322 0000018E F7E2 mul edx
|
||||||
|
323 00000190 89D0 mov eax, edx
|
||||||
|
324 00000192 C1E803 shr eax, 3
|
||||||
|
325 00000195 3B45FC cmp eax, DWORD [ebp-4]
|
||||||
|
326 00000198 7305 jae L4
|
||||||
|
327 0000019A E912000000 jmp L3
|
||||||
|
328 L4:
|
||||||
|
329 0000019F 8B45FC mov eax, DWORD [ebp-4]
|
||||||
|
330 000001A2 89C2 mov edx, eax
|
||||||
|
331 000001A4 C1E202 sal edx, 2
|
||||||
|
332 000001A7 01C2 add edx, eax
|
||||||
|
333 000001A9 8D0412 lea eax, [edx+edx]
|
||||||
|
334 000001AC 8945FC mov DWORD [ebp-4], eax
|
||||||
|
335 000001AF EBD5 jmp L2
|
||||||
|
336 L3:
|
||||||
|
337 000001B1 90 nop
|
||||||
|
338 L5:
|
||||||
|
339 000001B2 817DFC01000000 cmp DWORD [ebp-4], 1
|
||||||
|
340 000001B9 7705 ja L7
|
||||||
|
341 000001BB E959000000 jmp L6
|
||||||
|
342 L7:
|
||||||
|
343 000001C0 8B5508 mov edx, DWORD [ebp+8]
|
||||||
|
344 000001C3 89D0 mov eax, edx
|
||||||
|
345 000001C5 BA00000000 mov edx, 0
|
||||||
|
346 000001CA F775FC div DWORD [ebp-4]
|
||||||
|
347 000001CD 8945F4 mov DWORD [ebp-12], eax
|
||||||
|
348 000001D0 8A45F4 mov al, BYTE [ebp-12]
|
||||||
|
349 000001D3 8845FB mov BYTE [ebp-5], al
|
||||||
|
350 000001D6 B800000000 mov eax, 0
|
||||||
|
351 000001DB 8A45FB mov al, BYTE [ebp-5]
|
||||||
|
352 000001DE 0FAF45FC imul eax, DWORD [ebp-4]
|
||||||
|
353 000001E2 294508 sub DWORD [ebp+8], eax
|
||||||
|
354 000001E5 8B55FC mov edx, DWORD [ebp-4]
|
||||||
|
355 000001E8 B8CDCCCCCC mov eax, -858993459
|
||||||
|
356 000001ED F7E2 mul edx
|
||||||
|
357 000001EF 89D0 mov eax, edx
|
||||||
|
358 000001F1 C1E803 shr eax, 3
|
||||||
|
359 000001F4 8945FC mov DWORD [ebp-4], eax
|
||||||
|
360 000001F7 8D45FB lea eax, [ebp-5]
|
||||||
|
361 000001FA 800030 add BYTE [eax], 48
|
||||||
|
362 000001FD 81EC0C000000 sub esp, 12
|
||||||
|
363 00000203 B800000000 mov eax, 0
|
||||||
|
364 00000208 8A45FB mov al, BYTE [ebp-5]
|
||||||
|
365 0000020B 50 push eax
|
||||||
|
366 0000020C E8(00000000) call _putc
|
||||||
|
367 00000211 81C410000000 add esp, 16
|
||||||
|
368 00000217 EB99 jmp L5
|
||||||
|
369 L6:
|
||||||
|
370 00000219 81EC0C000000 sub esp, 12
|
||||||
|
371 0000021F 8A4508 mov al, BYTE [ebp+8]
|
||||||
|
372 00000222 0530000000 add eax, 48
|
||||||
|
373 00000227 25FF000000 and eax, 255
|
||||||
|
374 0000022C 50 push eax
|
||||||
|
375 0000022D E8(00000000) call _putc
|
||||||
|
376 00000232 81C410000000 add esp, 16
|
||||||
|
377 00000238 C9 leave
|
||||||
|
378 00000239 C3 ret
|
||||||
|
379
|
||||||
|
380
|
||||||
|
381
|
||||||
|
382
|
||||||
|
383 [global _putDec]
|
||||||
|
384 _putDec:
|
||||||
|
385 0000023A 55 push ebp
|
||||||
|
386 0000023B 89E5 mov ebp, esp
|
||||||
|
387 0000023D 81EC18000000 sub esp, 24
|
||||||
|
388 00000243 817D0800000000 cmp DWORD [ebp+8], 0
|
||||||
|
389 0000024A 7919 jns L9
|
||||||
|
390 0000024C 81EC0C000000 sub esp, 12
|
||||||
|
391 00000252 682D000000 push 45
|
||||||
|
392 00000257 E8(00000000) call _putc
|
||||||
|
393 0000025C 81C410000000 add esp, 16
|
||||||
|
394 00000262 F75D08 neg DWORD [ebp+8]
|
||||||
|
395 L9:
|
||||||
|
396 00000265 C745FC01000000 mov DWORD [ebp-4], 1
|
||||||
|
397 0000026C C645FB00 mov BYTE [ebp-5], 0
|
||||||
|
398 L10:
|
||||||
|
399 00000270 8B4508 mov eax, DWORD [ebp+8]
|
||||||
|
400 00000273 3B45FC cmp eax, DWORD [ebp-4]
|
||||||
|
401 00000276 7305 jae L12
|
||||||
|
402 00000278 E912000000 jmp L11
|
||||||
|
403 L12:
|
||||||
|
404 0000027D 8B45FC mov eax, DWORD [ebp-4]
|
||||||
|
405 00000280 89C2 mov edx, eax
|
||||||
|
406 00000282 C1E202 sal edx, 2
|
||||||
|
407 00000285 01C2 add edx, eax
|
||||||
|
408 00000287 8D0412 lea eax, [edx+edx]
|
||||||
|
409 0000028A 8945FC mov DWORD [ebp-4], eax
|
||||||
|
410 0000028D EBE1 jmp L10
|
||||||
|
411 L11:
|
||||||
|
412 0000028F 8B55FC mov edx, DWORD [ebp-4]
|
||||||
|
413 00000292 B8CDCCCCCC mov eax, -858993459
|
||||||
|
414 00000297 F7E2 mul edx
|
||||||
|
415 00000299 89D0 mov eax, edx
|
||||||
|
416 0000029B C1E803 shr eax, 3
|
||||||
|
417 0000029E 8945FC mov DWORD [ebp-4], eax
|
||||||
|
418 L13:
|
||||||
|
419 000002A1 817DFC01000000 cmp DWORD [ebp-4], 1
|
||||||
|
420 000002A8 7705 ja L15
|
||||||
|
421 000002AA E959000000 jmp L14
|
||||||
|
422 L15:
|
||||||
|
423 000002AF 8B5508 mov edx, DWORD [ebp+8]
|
||||||
|
424 000002B2 89D0 mov eax, edx
|
||||||
|
425 000002B4 BA00000000 mov edx, 0
|
||||||
|
426 000002B9 F775FC div DWORD [ebp-4]
|
||||||
|
427 000002BC 8945F4 mov DWORD [ebp-12], eax
|
||||||
|
428 000002BF 8A45F4 mov al, BYTE [ebp-12]
|
||||||
|
429 000002C2 8845FB mov BYTE [ebp-5], al
|
||||||
|
430 000002C5 B800000000 mov eax, 0
|
||||||
|
431 000002CA 8A45FB mov al, BYTE [ebp-5]
|
||||||
|
432 000002CD 0FAF45FC imul eax, DWORD [ebp-4]
|
||||||
|
433 000002D1 294508 sub DWORD [ebp+8], eax
|
||||||
|
434 000002D4 8B55FC mov edx, DWORD [ebp-4]
|
||||||
|
435 000002D7 B8CDCCCCCC mov eax, -858993459
|
||||||
|
436 000002DC F7E2 mul edx
|
||||||
|
437 000002DE 89D0 mov eax, edx
|
||||||
|
438 000002E0 C1E803 shr eax, 3
|
||||||
|
439 000002E3 8945FC mov DWORD [ebp-4], eax
|
||||||
|
440 000002E6 8D45FB lea eax, [ebp-5]
|
||||||
|
441 000002E9 800030 add BYTE [eax], 48
|
||||||
|
442 000002EC 81EC0C000000 sub esp, 12
|
||||||
|
443 000002F2 B800000000 mov eax, 0
|
||||||
|
444 000002F7 8A45FB mov al, BYTE [ebp-5]
|
||||||
|
445 000002FA 50 push eax
|
||||||
|
446 000002FB E8(00000000) call _putc
|
||||||
|
447 00000300 81C410000000 add esp, 16
|
||||||
|
448 00000306 EB99 jmp L13
|
||||||
|
449 L14:
|
||||||
|
450 00000308 81EC0C000000 sub esp, 12
|
||||||
|
451 0000030E 8A4508 mov al, BYTE [ebp+8]
|
||||||
|
452 00000311 0530000000 add eax, 48
|
||||||
|
453 00000316 25FF000000 and eax, 255
|
||||||
|
454 0000031B 50 push eax
|
||||||
|
455 0000031C E8(00000000) call _putc
|
||||||
|
456 00000321 81C410000000 add esp, 16
|
||||||
|
457 00000327 C9 leave
|
||||||
|
458 00000328 C3 ret
|
||||||
|
459
|
||||||
|
460
|
||||||
465
lst/kernel.lst
Normal file
465
lst/kernel.lst
Normal file
@ -0,0 +1,465 @@
|
|||||||
|
1 ;kernel.asm
|
||||||
|
2 ;Author: Josh Holtrop
|
||||||
|
3 ;Modified: 10/30/03
|
||||||
|
4
|
||||||
|
5 %define GDT_P 0x100000; ;1mb physical - Global Descriptor Table space
|
||||||
|
6 %define GDT_V GDT_P+0xC0000000
|
||||||
|
7 %define IDT_P 0x102000 ;1mb+8kb - Interrupt Descriptor Table space
|
||||||
|
8 %define IDT_V IDT_P+0xC0000000
|
||||||
|
9 %define PDBR_P 0x104000 ;1mb+16kb - Page Directory Base Register (first PD)
|
||||||
|
10 %define PDBR_V PDBR_P+0xC0000000
|
||||||
|
11 %define LOPT_P 0x105000 ;1mb+20kb - LOw Page Table for mapping first 4mb
|
||||||
|
12 %define LOPT_V LOPT_P+0xC0000000
|
||||||
|
13 %define KERNEL_P 0x106000 ;1mb+24kb - the kernel's physical address
|
||||||
|
14 %define KERNEL_V KERNEL_P+0xC0000000 ;3gb+1mb+24kb, the virtual address of the kernel
|
||||||
|
15
|
||||||
|
16 [global start]
|
||||||
|
17 [extern _isr]
|
||||||
|
18 [extern _k_init]
|
||||||
|
19
|
||||||
|
20 bits 32
|
||||||
|
21
|
||||||
|
22 ;This is where the kernel begins execution
|
||||||
|
23 ;At this point, the temporary gdt is set up to "map" 0xC000_0000 to 0x0.
|
||||||
|
24 ;We must enable paging with the first 4mb mapped 1:1 virtual:physical
|
||||||
|
25 ; and with the 4mb starting at 0xC000_0000 mapped to the first 4mb physical.
|
||||||
|
26 ;Then we can start using our "real" gdt, then unmap the lower 4mb.
|
||||||
|
27 start:
|
||||||
|
28 00000000 FA cli ;if they weren't already off
|
||||||
|
29
|
||||||
|
30 00000001 31C0 xor eax, eax
|
||||||
|
31 00000003 BF004010C0 mov edi, PDBR_V
|
||||||
|
32 00000008 B900040000 mov ecx, 1024 ;clear the PDBR
|
||||||
|
33 0000000D F3AB rep stosd
|
||||||
|
34 0000000F C705004010C0035010- mov [PDBR_V], dword LOPT_P|0x03 ;store the physical address of the LOw Page Table (read/write, present)
|
||||||
|
35 00000018 00
|
||||||
|
36 00000019 C705004C10C0035010- mov [PDBR_V+0xC00], dword LOPT_P|0x03 ;store the physical address of the LOw Page Table (read/write, present)
|
||||||
|
37 00000022 00
|
||||||
|
38
|
||||||
|
39 00000023 BF005010C0 mov edi, LOPT_V
|
||||||
|
40 00000028 B900040000 mov ecx, 1024
|
||||||
|
41 0000002D B803000000 mov eax, 0x03 ;starting physical address = 0x0 (read/write, present flags)
|
||||||
|
42 fill_lopt_loop: ;fill the page table
|
||||||
|
43 00000032 AB stosd
|
||||||
|
44 00000033 0500100000 add eax, 4096 ;increment next phsyical address by 4kb
|
||||||
|
45 00000038 E2F8 loop fill_lopt_loop
|
||||||
|
46
|
||||||
|
47 0000003A B800401000 mov eax, PDBR_P
|
||||||
|
48 0000003F 0F22D8 mov cr3, eax ;store the Page Directory Base Address
|
||||||
|
49 00000042 0F20C0 mov eax, cr0
|
||||||
|
50 00000045 0D00000080 or eax, 0x80000000 ;set page enable bit
|
||||||
|
51 0000004A 0F22C0 mov cr0, eax ;now paging is active!
|
||||||
|
52
|
||||||
|
53
|
||||||
|
54 0000004D BF000010C0 mov edi, GDT_V
|
||||||
|
55 00000052 BE[D4000000] mov esi, gdt
|
||||||
|
56 00000057 B948000000 mov ecx, gdt_end-gdt
|
||||||
|
57 copy_gdt:
|
||||||
|
58 0000005C AC lodsb
|
||||||
|
59 0000005D AA stosb
|
||||||
|
60 0000005E E2FC loop copy_gdt
|
||||||
|
61
|
||||||
|
62 00000060 BF002010C0 mov edi, IDT_V ;destination
|
||||||
|
63 00000065 BE[22010000] mov esi, isr_0 ;address of isr0
|
||||||
|
64 0000006A BA0B000000 mov edx, isr_1-isr_0 ;distance between isr labels
|
||||||
|
65 0000006F B932000000 mov ecx, 50 ;number of isrlabels
|
||||||
|
66 fill_idt:
|
||||||
|
67 00000074 89F3 mov ebx, esi
|
||||||
|
68 00000076 6689F0 mov ax, si
|
||||||
|
69 00000079 66AB stosw ;0 offset 15:0
|
||||||
|
70 0000007B 66B80800 mov ax, KERNEL_CODE
|
||||||
|
71 0000007F 66AB stosw ;2 selector 15:0
|
||||||
|
72 00000081 66B8008E mov ax, 0x8E00
|
||||||
|
73 00000085 66AB stosw ;4 [P][DPL][0][TYPE][0][0][0][0][0][0][0][0]
|
||||||
|
74 00000087 C1EE10 shr esi, 16
|
||||||
|
75 0000008A 6689F0 mov ax, si
|
||||||
|
76 0000008D 66AB stosw ;6 offset 31:16
|
||||||
|
77 0000008F 89DE mov esi, ebx
|
||||||
|
78 00000091 01D6 add esi, edx
|
||||||
|
79 00000093 E2DF loop fill_idt
|
||||||
|
80 00000095 66C705842110C000EE mov word [IDT_V+0x30*8+4], 0xEE00 ;interrupt 0x30 has user priviledges
|
||||||
|
81
|
||||||
|
82 0000009E 0F0115[CE000000] lgdt [gdtr] ;load gdt
|
||||||
|
83 000000A5 EA[AC000000]0800 jmp KERNEL_CODE:newgdtcontinue
|
||||||
|
84 newgdtcontinue:
|
||||||
|
85 000000AC 66B81000 mov ax, KERNEL_DATA
|
||||||
|
86 000000B0 8EC0 mov es, ax
|
||||||
|
87 000000B2 8ED8 mov ds, ax
|
||||||
|
88 000000B4 8EE8 mov gs, ax
|
||||||
|
89 000000B6 8EE0 mov fs, ax
|
||||||
|
90 000000B8 8ED0 mov ss, ax
|
||||||
|
91 000000BA BCFCFF1FC0 mov esp, 0xc01ffffc ;stack just under 3gb+2mb, moves downward
|
||||||
|
92 000000BF 0F011D[1C010000] lidt [idtr] ;load idt
|
||||||
|
93
|
||||||
|
94 000000C6 E8(00000000) call _k_init
|
||||||
|
95 haltit:
|
||||||
|
96 000000CB F4 hlt ;halt processor when k_init is done
|
||||||
|
97 000000CC EBFD jmp haltit ;shouldn't get here...
|
||||||
|
98
|
||||||
|
99 %include "gdt.inc"
|
||||||
|
100 <1> ;gdt.inc
|
||||||
|
101 <1> ;Author: Josh Holtrop
|
||||||
|
102 <1> ;for HOS
|
||||||
|
103 <1> ;Modified: 10/30/03
|
||||||
|
104 <1>
|
||||||
|
105 <1> gdtr:
|
||||||
|
106 000000CE 4700 <1> dw gdt_end-gdt-1
|
||||||
|
107 000000D0 00001000 <1> dd GDT_P
|
||||||
|
108 <1> gdt:
|
||||||
|
109 000000D4 00000000 <1> dd 0
|
||||||
|
110 000000D8 00000000 <1> dd 0
|
||||||
|
111 <1> KERNEL_CODE equ $-gdt
|
||||||
|
112 000000DC FFFF <1> dw 0xffff ;limit 15:0
|
||||||
|
113 000000DE 0000 <1> dw 0x0000 ;base 15:0
|
||||||
|
114 000000E0 00 <1> db 0x00 ;base 23:16
|
||||||
|
115 000000E1 9A <1> db 0x9A ;access ([P][DPL][1][Executable][Direction/Conforming][Writable/Readable][A])
|
||||||
|
116 000000E2 CF <1> db 0xCF ;flags ([G][D/B][0][0]) / limit 19:16
|
||||||
|
117 000000E3 00 <1> db 0x00 ;base 31:24
|
||||||
|
118 <1> KERNEL_DATA equ $-gdt
|
||||||
|
119 000000E4 FFFF <1> dw 0xffff ;limit 15:0
|
||||||
|
120 000000E6 0000 <1> dw 0x0000 ;base 15:0
|
||||||
|
121 000000E8 00 <1> db 0x00 ;base 23:16
|
||||||
|
122 000000E9 92 <1> db 0x92 ;access ([P][DPL][1][Executable][Direction/Conforming][Writable/Readable][A])
|
||||||
|
123 000000EA CF <1> db 0xCF ;flags ([G][D/B][0][0]) / limit 19:16
|
||||||
|
124 000000EB 00 <1> db 0x00 ;base 31:24
|
||||||
|
125 <1> VESA_CODE equ $-gdt
|
||||||
|
126 000000EC FFFF <1> dw 0xffff ;limit 15:0
|
||||||
|
127 000000EE 0000 <1> dw 0x0000 ;base 15:0
|
||||||
|
128 000000F0 00 <1> db 0x00 ;base 23:16
|
||||||
|
129 000000F1 9A <1> db 0x9A ;access ([P][DPL][1][Executable][Direction/Conforming][Writable/Readable][A])
|
||||||
|
130 000000F2 40 <1> db 0x40 ;flags ([G][D/B][0][0]) / limit 19:16
|
||||||
|
131 000000F3 00 <1> db 0x00 ;base 31:24
|
||||||
|
132 <1> VESA_DATA equ $-gdt
|
||||||
|
133 000000F4 FFFF <1> dw 0xffff ;limit 15:0
|
||||||
|
134 000000F6 0000 <1> dw 0x0000 ;base 15:0
|
||||||
|
135 000000F8 00 <1> db 0x00 ;base 23:16
|
||||||
|
136 000000F9 92 <1> db 0x92 ;access ([P][DPL][1][Executable][Direction/Conforming][Writable/Readable][A])
|
||||||
|
137 000000FA 40 <1> db 0x40 ;flags ([G][D/B][0][0]) / limit 19:16
|
||||||
|
138 000000FB 00 <1> db 0x00 ;base 31:24
|
||||||
|
139 <1> VIDEO_TEXT equ $-gdt
|
||||||
|
140 000000FC FF7F <1> dw 0x7FFF ;limit 15:0
|
||||||
|
141 000000FE 0080 <1> dw 0x8000 ;base 15:0
|
||||||
|
142 00000100 0B <1> db 0x0B ;base 23:16
|
||||||
|
143 00000101 92 <1> db 0x92 ;access ([P][DPL][1][Executable][Direction/Conforming][Writable/Readable][A])
|
||||||
|
144 00000102 40 <1> db 0x40 ;flags ([G][D/B][0][0]) / limit 19:16
|
||||||
|
145 00000103 00 <1> db 0x00 ;base 31:24
|
||||||
|
146 <1> VIDEO_GRAPHICS equ $-gdt
|
||||||
|
147 00000104 FFFF <1> dw 0xFFFF ;limit 15:0
|
||||||
|
148 00000106 0000 <1> dw 0x0000 ;base 15:0
|
||||||
|
149 00000108 0A <1> db 0x0A ;base 23:16
|
||||||
|
150 00000109 92 <1> db 0x92 ;access ([P][DPL][1][Executable][Direction/Conforming][Writable/Readable][A])
|
||||||
|
151 0000010A 40 <1> db 0x40 ;flags ([G][D/B][0][0]) / limit 19:16
|
||||||
|
152 0000010B 00 <1> db 0x00 ;base 31:24
|
||||||
|
153 <1> USER_CODE equ $-gdt
|
||||||
|
154 0000010C FFFF <1> dw 0xffff ;limit 15:0
|
||||||
|
155 0000010E 0000 <1> dw 0x0000 ;base 15:0
|
||||||
|
156 00000110 00 <1> db 0x00 ;base 23:16
|
||||||
|
157 00000111 FA <1> db 0xFA ;access ([P][DPL][1][Executable][Direction/Conforming][Writable/Readable][A])
|
||||||
|
158 00000112 CF <1> db 0xCF ;flags ([G][D/B][0][0]) / limit 19:16
|
||||||
|
159 00000113 00 <1> db 0x00 ;base 31:24
|
||||||
|
160 <1> USER_DATA equ $-gdt
|
||||||
|
161 00000114 FFFF <1> dw 0xffff ;limit 15:0
|
||||||
|
162 00000116 0000 <1> dw 0x0000 ;base 15:0
|
||||||
|
163 00000118 00 <1> db 0x00 ;base 23:16
|
||||||
|
164 00000119 F2 <1> db 0xF2 ;access ([P][DPL][1][Executable][Direction/Conforming][Writable/Readable][A])
|
||||||
|
165 0000011A CF <1> db 0xCF ;flags ([G][D/B][0][0]) / limit 19:16
|
||||||
|
166 0000011B 00 <1> db 0x00 ;base 31:24
|
||||||
|
167 <1> gdt_end:
|
||||||
|
168 <1>
|
||||||
|
169 <1>
|
||||||
|
170 <1>
|
||||||
|
171 %include "idt.inc"
|
||||||
|
172 <1> ;idt.inc
|
||||||
|
173 <1> ;Author: Josh Holtrop
|
||||||
|
174 <1> ;for HOS
|
||||||
|
175 <1> ;Modified: 10/30/03
|
||||||
|
176 <1>
|
||||||
|
177 <1> idtr:
|
||||||
|
178 0000011C 8F01 <1> dw 50*8-1 ;size of idt
|
||||||
|
179 0000011E 00201000 <1> dd IDT_P ;address of idt
|
||||||
|
180 <1>
|
||||||
|
181 <1>
|
||||||
|
182 <1> %macro isr_label 1
|
||||||
|
183 <1> isr_%1:
|
||||||
|
184 <1> push eax
|
||||||
|
185 <1> mov eax, %1
|
||||||
|
186 <1> jmp isr_main
|
||||||
|
187 <1> %endmacro
|
||||||
|
188 <1>
|
||||||
|
189 <1> isr_label 0
|
||||||
|
190 <2> isr_%1:
|
||||||
|
191 00000122 50 <2> push eax
|
||||||
|
192 00000123 B800000000 <2> mov eax, %1
|
||||||
|
193 00000128 E91B020000 <2> jmp isr_main
|
||||||
|
194 <1> isr_label 1
|
||||||
|
195 <2> isr_%1:
|
||||||
|
196 0000012D 50 <2> push eax
|
||||||
|
197 0000012E B801000000 <2> mov eax, %1
|
||||||
|
198 00000133 E910020000 <2> jmp isr_main
|
||||||
|
199 <1> isr_label 2
|
||||||
|
200 <2> isr_%1:
|
||||||
|
201 00000138 50 <2> push eax
|
||||||
|
202 00000139 B802000000 <2> mov eax, %1
|
||||||
|
203 0000013E E905020000 <2> jmp isr_main
|
||||||
|
204 <1> isr_label 3
|
||||||
|
205 <2> isr_%1:
|
||||||
|
206 00000143 50 <2> push eax
|
||||||
|
207 00000144 B803000000 <2> mov eax, %1
|
||||||
|
208 00000149 E9FA010000 <2> jmp isr_main
|
||||||
|
209 <1> isr_label 4
|
||||||
|
210 <2> isr_%1:
|
||||||
|
211 0000014E 50 <2> push eax
|
||||||
|
212 0000014F B804000000 <2> mov eax, %1
|
||||||
|
213 00000154 E9EF010000 <2> jmp isr_main
|
||||||
|
214 <1> isr_label 5
|
||||||
|
215 <2> isr_%1:
|
||||||
|
216 00000159 50 <2> push eax
|
||||||
|
217 0000015A B805000000 <2> mov eax, %1
|
||||||
|
218 0000015F E9E4010000 <2> jmp isr_main
|
||||||
|
219 <1> isr_label 6
|
||||||
|
220 <2> isr_%1:
|
||||||
|
221 00000164 50 <2> push eax
|
||||||
|
222 00000165 B806000000 <2> mov eax, %1
|
||||||
|
223 0000016A E9D9010000 <2> jmp isr_main
|
||||||
|
224 <1> isr_label 7
|
||||||
|
225 <2> isr_%1:
|
||||||
|
226 0000016F 50 <2> push eax
|
||||||
|
227 00000170 B807000000 <2> mov eax, %1
|
||||||
|
228 00000175 E9CE010000 <2> jmp isr_main
|
||||||
|
229 <1> isr_label 8
|
||||||
|
230 <2> isr_%1:
|
||||||
|
231 0000017A 50 <2> push eax
|
||||||
|
232 0000017B B808000000 <2> mov eax, %1
|
||||||
|
233 00000180 E9C3010000 <2> jmp isr_main
|
||||||
|
234 <1> isr_label 9
|
||||||
|
235 <2> isr_%1:
|
||||||
|
236 00000185 50 <2> push eax
|
||||||
|
237 00000186 B809000000 <2> mov eax, %1
|
||||||
|
238 0000018B E9B8010000 <2> jmp isr_main
|
||||||
|
239 <1> isr_label 10
|
||||||
|
240 <2> isr_%1:
|
||||||
|
241 00000190 50 <2> push eax
|
||||||
|
242 00000191 B80A000000 <2> mov eax, %1
|
||||||
|
243 00000196 E9AD010000 <2> jmp isr_main
|
||||||
|
244 <1> isr_label 11
|
||||||
|
245 <2> isr_%1:
|
||||||
|
246 0000019B 50 <2> push eax
|
||||||
|
247 0000019C B80B000000 <2> mov eax, %1
|
||||||
|
248 000001A1 E9A2010000 <2> jmp isr_main
|
||||||
|
249 <1> isr_label 12
|
||||||
|
250 <2> isr_%1:
|
||||||
|
251 000001A6 50 <2> push eax
|
||||||
|
252 000001A7 B80C000000 <2> mov eax, %1
|
||||||
|
253 000001AC E997010000 <2> jmp isr_main
|
||||||
|
254 <1> isr_label 13
|
||||||
|
255 <2> isr_%1:
|
||||||
|
256 000001B1 50 <2> push eax
|
||||||
|
257 000001B2 B80D000000 <2> mov eax, %1
|
||||||
|
258 000001B7 E98C010000 <2> jmp isr_main
|
||||||
|
259 <1> isr_label 14
|
||||||
|
260 <2> isr_%1:
|
||||||
|
261 000001BC 50 <2> push eax
|
||||||
|
262 000001BD B80E000000 <2> mov eax, %1
|
||||||
|
263 000001C2 E981010000 <2> jmp isr_main
|
||||||
|
264 <1> isr_label 15
|
||||||
|
265 <2> isr_%1:
|
||||||
|
266 000001C7 50 <2> push eax
|
||||||
|
267 000001C8 B80F000000 <2> mov eax, %1
|
||||||
|
268 000001CD E976010000 <2> jmp isr_main
|
||||||
|
269 <1> isr_label 16
|
||||||
|
270 <2> isr_%1:
|
||||||
|
271 000001D2 50 <2> push eax
|
||||||
|
272 000001D3 B810000000 <2> mov eax, %1
|
||||||
|
273 000001D8 E96B010000 <2> jmp isr_main
|
||||||
|
274 <1> isr_label 17
|
||||||
|
275 <2> isr_%1:
|
||||||
|
276 000001DD 50 <2> push eax
|
||||||
|
277 000001DE B811000000 <2> mov eax, %1
|
||||||
|
278 000001E3 E960010000 <2> jmp isr_main
|
||||||
|
279 <1> isr_label 18
|
||||||
|
280 <2> isr_%1:
|
||||||
|
281 000001E8 50 <2> push eax
|
||||||
|
282 000001E9 B812000000 <2> mov eax, %1
|
||||||
|
283 000001EE E955010000 <2> jmp isr_main
|
||||||
|
284 <1> isr_label 19
|
||||||
|
285 <2> isr_%1:
|
||||||
|
286 000001F3 50 <2> push eax
|
||||||
|
287 000001F4 B813000000 <2> mov eax, %1
|
||||||
|
288 000001F9 E94A010000 <2> jmp isr_main
|
||||||
|
289 <1> isr_label 20
|
||||||
|
290 <2> isr_%1:
|
||||||
|
291 000001FE 50 <2> push eax
|
||||||
|
292 000001FF B814000000 <2> mov eax, %1
|
||||||
|
293 00000204 E93F010000 <2> jmp isr_main
|
||||||
|
294 <1> isr_label 21
|
||||||
|
295 <2> isr_%1:
|
||||||
|
296 00000209 50 <2> push eax
|
||||||
|
297 0000020A B815000000 <2> mov eax, %1
|
||||||
|
298 0000020F E934010000 <2> jmp isr_main
|
||||||
|
299 <1> isr_label 22
|
||||||
|
300 <2> isr_%1:
|
||||||
|
301 00000214 50 <2> push eax
|
||||||
|
302 00000215 B816000000 <2> mov eax, %1
|
||||||
|
303 0000021A E929010000 <2> jmp isr_main
|
||||||
|
304 <1> isr_label 23
|
||||||
|
305 <2> isr_%1:
|
||||||
|
306 0000021F 50 <2> push eax
|
||||||
|
307 00000220 B817000000 <2> mov eax, %1
|
||||||
|
308 00000225 E91E010000 <2> jmp isr_main
|
||||||
|
309 <1> isr_label 24
|
||||||
|
310 <2> isr_%1:
|
||||||
|
311 0000022A 50 <2> push eax
|
||||||
|
312 0000022B B818000000 <2> mov eax, %1
|
||||||
|
313 00000230 E913010000 <2> jmp isr_main
|
||||||
|
314 <1> isr_label 25
|
||||||
|
315 <2> isr_%1:
|
||||||
|
316 00000235 50 <2> push eax
|
||||||
|
317 00000236 B819000000 <2> mov eax, %1
|
||||||
|
318 0000023B E908010000 <2> jmp isr_main
|
||||||
|
319 <1> isr_label 26
|
||||||
|
320 <2> isr_%1:
|
||||||
|
321 00000240 50 <2> push eax
|
||||||
|
322 00000241 B81A000000 <2> mov eax, %1
|
||||||
|
323 00000246 E9FD000000 <2> jmp isr_main
|
||||||
|
324 <1> isr_label 27
|
||||||
|
325 <2> isr_%1:
|
||||||
|
326 0000024B 50 <2> push eax
|
||||||
|
327 0000024C B81B000000 <2> mov eax, %1
|
||||||
|
328 00000251 E9F2000000 <2> jmp isr_main
|
||||||
|
329 <1> isr_label 28
|
||||||
|
330 <2> isr_%1:
|
||||||
|
331 00000256 50 <2> push eax
|
||||||
|
332 00000257 B81C000000 <2> mov eax, %1
|
||||||
|
333 0000025C E9E7000000 <2> jmp isr_main
|
||||||
|
334 <1> isr_label 29
|
||||||
|
335 <2> isr_%1:
|
||||||
|
336 00000261 50 <2> push eax
|
||||||
|
337 00000262 B81D000000 <2> mov eax, %1
|
||||||
|
338 00000267 E9DC000000 <2> jmp isr_main
|
||||||
|
339 <1> isr_label 30
|
||||||
|
340 <2> isr_%1:
|
||||||
|
341 0000026C 50 <2> push eax
|
||||||
|
342 0000026D B81E000000 <2> mov eax, %1
|
||||||
|
343 00000272 E9D1000000 <2> jmp isr_main
|
||||||
|
344 <1> isr_label 31
|
||||||
|
345 <2> isr_%1:
|
||||||
|
346 00000277 50 <2> push eax
|
||||||
|
347 00000278 B81F000000 <2> mov eax, %1
|
||||||
|
348 0000027D E9C6000000 <2> jmp isr_main
|
||||||
|
349 <1> isr_label 32
|
||||||
|
350 <2> isr_%1:
|
||||||
|
351 00000282 50 <2> push eax
|
||||||
|
352 00000283 B820000000 <2> mov eax, %1
|
||||||
|
353 00000288 E9BB000000 <2> jmp isr_main
|
||||||
|
354 <1> isr_label 33
|
||||||
|
355 <2> isr_%1:
|
||||||
|
356 0000028D 50 <2> push eax
|
||||||
|
357 0000028E B821000000 <2> mov eax, %1
|
||||||
|
358 00000293 E9B0000000 <2> jmp isr_main
|
||||||
|
359 <1> isr_label 34
|
||||||
|
360 <2> isr_%1:
|
||||||
|
361 00000298 50 <2> push eax
|
||||||
|
362 00000299 B822000000 <2> mov eax, %1
|
||||||
|
363 0000029E E9A5000000 <2> jmp isr_main
|
||||||
|
364 <1> isr_label 35
|
||||||
|
365 <2> isr_%1:
|
||||||
|
366 000002A3 50 <2> push eax
|
||||||
|
367 000002A4 B823000000 <2> mov eax, %1
|
||||||
|
368 000002A9 E99A000000 <2> jmp isr_main
|
||||||
|
369 <1> isr_label 36
|
||||||
|
370 <2> isr_%1:
|
||||||
|
371 000002AE 50 <2> push eax
|
||||||
|
372 000002AF B824000000 <2> mov eax, %1
|
||||||
|
373 000002B4 E98F000000 <2> jmp isr_main
|
||||||
|
374 <1> isr_label 37
|
||||||
|
375 <2> isr_%1:
|
||||||
|
376 000002B9 50 <2> push eax
|
||||||
|
377 000002BA B825000000 <2> mov eax, %1
|
||||||
|
378 000002BF E984000000 <2> jmp isr_main
|
||||||
|
379 <1> isr_label 38
|
||||||
|
380 <2> isr_%1:
|
||||||
|
381 000002C4 50 <2> push eax
|
||||||
|
382 000002C5 B826000000 <2> mov eax, %1
|
||||||
|
383 000002CA E979000000 <2> jmp isr_main
|
||||||
|
384 <1> isr_label 39
|
||||||
|
385 <2> isr_%1:
|
||||||
|
386 000002CF 50 <2> push eax
|
||||||
|
387 000002D0 B827000000 <2> mov eax, %1
|
||||||
|
388 000002D5 E96E000000 <2> jmp isr_main
|
||||||
|
389 <1> isr_label 40
|
||||||
|
390 <2> isr_%1:
|
||||||
|
391 000002DA 50 <2> push eax
|
||||||
|
392 000002DB B828000000 <2> mov eax, %1
|
||||||
|
393 000002E0 E963000000 <2> jmp isr_main
|
||||||
|
394 <1> isr_label 41
|
||||||
|
395 <2> isr_%1:
|
||||||
|
396 000002E5 50 <2> push eax
|
||||||
|
397 000002E6 B829000000 <2> mov eax, %1
|
||||||
|
398 000002EB E958000000 <2> jmp isr_main
|
||||||
|
399 <1> isr_label 42
|
||||||
|
400 <2> isr_%1:
|
||||||
|
401 000002F0 50 <2> push eax
|
||||||
|
402 000002F1 B82A000000 <2> mov eax, %1
|
||||||
|
403 000002F6 E94D000000 <2> jmp isr_main
|
||||||
|
404 <1> isr_label 43
|
||||||
|
405 <2> isr_%1:
|
||||||
|
406 000002FB 50 <2> push eax
|
||||||
|
407 000002FC B82B000000 <2> mov eax, %1
|
||||||
|
408 00000301 E942000000 <2> jmp isr_main
|
||||||
|
409 <1> isr_label 44
|
||||||
|
410 <2> isr_%1:
|
||||||
|
411 00000306 50 <2> push eax
|
||||||
|
412 00000307 B82C000000 <2> mov eax, %1
|
||||||
|
413 0000030C E937000000 <2> jmp isr_main
|
||||||
|
414 <1> isr_label 45
|
||||||
|
415 <2> isr_%1:
|
||||||
|
416 00000311 50 <2> push eax
|
||||||
|
417 00000312 B82D000000 <2> mov eax, %1
|
||||||
|
418 00000317 E92C000000 <2> jmp isr_main
|
||||||
|
419 <1> isr_label 46
|
||||||
|
420 <2> isr_%1:
|
||||||
|
421 0000031C 50 <2> push eax
|
||||||
|
422 0000031D B82E000000 <2> mov eax, %1
|
||||||
|
423 00000322 E921000000 <2> jmp isr_main
|
||||||
|
424 <1> isr_label 47
|
||||||
|
425 <2> isr_%1:
|
||||||
|
426 00000327 50 <2> push eax
|
||||||
|
427 00000328 B82F000000 <2> mov eax, %1
|
||||||
|
428 0000032D E916000000 <2> jmp isr_main
|
||||||
|
429 <1> isr_label 48
|
||||||
|
430 <2> isr_%1:
|
||||||
|
431 00000332 50 <2> push eax
|
||||||
|
432 00000333 B830000000 <2> mov eax, %1
|
||||||
|
433 00000338 E90B000000 <2> jmp isr_main
|
||||||
|
434 <1> isr_label 49
|
||||||
|
435 <2> isr_%1:
|
||||||
|
436 0000033D 50 <2> push eax
|
||||||
|
437 0000033E B831000000 <2> mov eax, %1
|
||||||
|
438 00000343 E900000000 <2> jmp isr_main
|
||||||
|
439 <1>
|
||||||
|
440 <1> isr_main:
|
||||||
|
441 00000348 60 <1> pusha
|
||||||
|
442 00000349 1E <1> push ds
|
||||||
|
443 0000034A 06 <1> push es
|
||||||
|
444 <1>
|
||||||
|
445 0000034B 50 <1> push eax
|
||||||
|
446 <1>
|
||||||
|
447 0000034C E8(00000000) <1> call _isr
|
||||||
|
448 <1>
|
||||||
|
449 00000351 58 <1> pop eax
|
||||||
|
450 <1>
|
||||||
|
451 00000352 07 <1> pop es
|
||||||
|
452 00000353 1F <1> pop ds
|
||||||
|
453 00000354 61 <1> popa
|
||||||
|
454 00000355 58 <1> pop eax
|
||||||
|
455 <1>
|
||||||
|
456 00000356 CF <1> iret
|
||||||
|
457 <1>
|
||||||
|
458 <1>
|
||||||
|
459 <1>
|
||||||
|
460 <1>
|
||||||
|
461 <1>
|
||||||
|
462 <1>
|
||||||
|
463 <1>
|
||||||
|
464
|
||||||
|
465
|
||||||
2
rd.c
2
rd.c
@ -6,7 +6,7 @@
|
|||||||
|
|
||||||
byte *rd_readSector(DiskDevice *rd, dword sector, byte *dest)
|
byte *rd_readSector(DiskDevice *rd, dword sector, byte *dest)
|
||||||
{
|
{
|
||||||
memcpy((dword)dest, rd->location + (sector * 512), 512);
|
memcpy(dest, (void *)(rd->location + (sector * 512)), 512);
|
||||||
return dest;
|
return dest;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|||||||
40
stage2.asm
40
stage2.asm
@ -148,29 +148,43 @@ got_rd:
|
|||||||
mov [ds:BOOT_HASRD], al
|
mov [ds:BOOT_HASRD], al
|
||||||
pop ds ;ds=0
|
pop ds ;ds=0
|
||||||
cmp al, 0 ;dont load rd
|
cmp al, 0 ;dont load rd
|
||||||
jz no_rd
|
jnz yes_rd
|
||||||
|
jmp no_rd
|
||||||
|
yes_rd:
|
||||||
mov cx, 80
|
mov cx, 80
|
||||||
mov edi, 0xb8000+160*4
|
mov edi, 0xb8000+160*4
|
||||||
filler_loop:
|
filler_loop: ;draw a red bar
|
||||||
mov word [ds:edi], 0x0400+177
|
mov word [ds:edi], 0x0400+177
|
||||||
inc edi
|
inc edi
|
||||||
inc edi
|
inc edi
|
||||||
loop filler_loop
|
loop filler_loop
|
||||||
|
|
||||||
mov cx, 80 ;80 cylinders to read
|
mov cx, 80 ;80 cylinders to read
|
||||||
xor si, si
|
xor si, si ;start at cylinder 0
|
||||||
mov edi, BOOT_RD_ADD ;ram disk address
|
mov edi, BOOT_RD_ADD ;ram disk address
|
||||||
read_cylinder:
|
read_cylinder:
|
||||||
push cx
|
push cx
|
||||||
mov bx, 0x0100
|
|
||||||
|
mov bx, 0x0100 ;read sectors from head 0
|
||||||
mov es, bx
|
mov es, bx
|
||||||
xor bx, bx
|
xor bx, bx ;es:bx = data buffer for read
|
||||||
mov ax, 0x0224
|
mov ax, 0x0212 ;ah = int 0x13 function 2, al = number of sectors to read
|
||||||
mov cx, si
|
mov cx, si ;what cyl. we are on is now in cx
|
||||||
mov ch, cl
|
mov ch, cl ;ch = cyl. number
|
||||||
mov cl, 1
|
mov cl, 1 ;cl = sector number 1-63
|
||||||
xor dx, dx
|
xor dx, dx ;dh = head number
|
||||||
mov dl, [gs:BOOT_DRIVE]
|
mov dl, [gs:BOOT_DRIVE] ;dl = drive number
|
||||||
|
int 0x13
|
||||||
|
|
||||||
|
mov bx, 0x0100 ;now read sectors from head 1
|
||||||
|
mov es, bx
|
||||||
|
mov bx, 9216 ;es:bx = data buffer for read
|
||||||
|
mov ax, 0x0212 ;ah = int 0x13 function 2, al = number of sectors to read
|
||||||
|
mov cx, si ;what cyl. we are on is now in cx
|
||||||
|
mov ch, cl ;ch = cyl. number
|
||||||
|
mov cl, 1 ;cl = sector number 1-63
|
||||||
|
mov dh, 1 ;dh = head number
|
||||||
|
mov dl, [gs:BOOT_DRIVE] ;dl = drive number
|
||||||
int 0x13
|
int 0x13
|
||||||
|
|
||||||
mov ebx, 0xb8000
|
mov ebx, 0xb8000
|
||||||
@ -837,7 +851,7 @@ puthex2_goon2:
|
|||||||
ret
|
ret
|
||||||
|
|
||||||
;------------------------------------------------------
|
;------------------------------------------------------
|
||||||
txt_welcome: db " Welcome to HOS v", VERSION, "! ", 0
|
txt_welcome: db " Welcome to HOS v", VERSION, "! ", 0
|
||||||
txt_rd1: db "1. Do not load an initial ram disk", 0
|
txt_rd1: db "1. Do not load an initial ram disk", 0
|
||||||
txt_rd2: db "2. Load initial ram disk from floppy", 0
|
txt_rd2: db "2. Load initial ram disk from floppy", 0
|
||||||
txt_input: db "Enter your selection: ", 0
|
txt_input: db "Enter your selection: ", 0
|
||||||
|
|||||||
2
vfs.c
2
vfs.c
@ -43,7 +43,7 @@ byte *vfs_readFile(char *fileName)
|
|||||||
if (!((fileName[3] == ':') && (fileName[4] == '/'))) //if we aren't using the root directory, then there must be a 3 character device explicitly specified
|
if (!((fileName[3] == ':') && (fileName[4] == '/'))) //if we aren't using the root directory, then there must be a 3 character device explicitly specified
|
||||||
return 0; // followed by a colon and then a slash
|
return 0; // followed by a colon and then a slash
|
||||||
char device[4];
|
char device[4];
|
||||||
memcpy((dword)device, (dword)fileName, 3); //copy the 3 digit device id to device
|
memcpy(device, fileName, 3); //copy the 3 digit device id to device
|
||||||
device[3] = 0; //null-terminating character for device string
|
device[3] = 0; //null-terminating character for device string
|
||||||
dd = vfs_getDiskDeviceByID(device);
|
dd = vfs_getDiskDeviceByID(device);
|
||||||
if (!dd) //the specified device was not found
|
if (!dd) //the specified device was not found
|
||||||
|
|||||||
Loading…
x
Reference in New Issue
Block a user