chore: sync repo

bin/ld/main.c

@@ -2,16 +2,26 @@
 #include <stdio.h>
 #include <coff.h>
 
+# define BASE_ADDRESS = 0x100000
+
 static char *prg_name;
 static char *outfile = "a.out";
 
 typedef struct {
-	
+	size_t size;
+	uint8_t *raw;
 } Section;
 
+typedef struct object {
+	size_t section_count;
+	Section *sections;
+
+	struct object *next;
+} Object;
+
 typedef struct {
 
-} Object;
+} Symtab;
 
 static void
 usage(int retcode)
@@ -36,7 +46,7 @@ usage(int retcode)
 static void
 version(void)
 {
-	printf("%s commit %s\n", prg_name, MK_COMMIT);
+	printf("%s (%s) %s", prg_name, MK_PACKAGE, MK_COMMIT);
 	exit(EXIT_SUCCESS);
 }
 
@@ -77,49 +87,7 @@ main(int argc, char **argv)
 
 	if (argc <= 1) usage(EXIT_FAILURE);
 
-	fp = fopen(argv[1], "rb");
+	
-	if (fp == NULL)
-	{
-		return (EXIT_FAILURE);
-	}
-
-	fread(&fhdr, 1, FILHSZ, fp);
-	printf("magic: 0x%hx\n", fhdr.f_magic);
-	printf("n section: %hd\n", fhdr.f_nscns);
-	printf("symtab: 0x%X\n", fhdr.f_symptr);
-	printf("sym entries: %d\n", fhdr.f_nsyms);
-	printf("optional hdr size: %hu\n", fhdr.f_opthdr);
-	printf("flags: 0x%hx\n", fhdr.f_flags);
-
-	if (fhdr.f_opthdr > 0)
-	{
-		buffer = malloc(fhdr.f_opthdr);
-		fread(buffer, 1, fhdr.f_opthdr, fp);
-		free(buffer);
-	}
-
-	for (idx = 0; idx < fhdr.f_nscns; idx++)
-	{
-		fread(&shdr, 1, SCNHSZ, fp);
-		printf("Section: %c%c%c%c%c%c%c%c\n", shdr.s_name[0], shdr.s_name[1],shdr.s_name[2],shdr.s_name[3],shdr.s_name[4],shdr.s_name[5],shdr.s_name[6],shdr.s_name[7]);
-		printf("\tflags: 0x%x\n", shdr.s_flags);
-		printf("\tsize: %d\n", shdr.s_size);
-	}
-
-	fseek(fp, fhdr.f_symptr, SEEK_SET);
-
-	for (idx = 0; idx < fhdr.f_nsyms; idx++)
-	{
-		fread(&entry, 1, SYMESZ, fp);
-		printf("name: %c%c%c%c%c%c%c%c\n", entry.n_name[0], entry.n_name[1],entry.n_name[2],entry.n_name[3],entry.n_name[4],entry.n_name[5],entry.n_name[6],entry.n_name[7]);
-		printf("\tvalue: %d\n", entry.n_value);
-		printf("\tscnum: %hd\n", entry.n_scnum);
-		printf("\ttype: %hd\n", entry.n_type);
-		printf("\tsclass: %d\n", entry.n_sclass);
-		printf("\tnumaux: %d\n", entry.n_numaux);
-	}
-
-	fclose(fp);
 
 	return (EXIT_SUCCESS);
 }

bin/readcoff/main.c

@@ -71,6 +71,8 @@ main(int argc, char **argv)
 	FILE *fp;
 	int idx;
 	time_t timedat;
+	char *string_table;
+	size_t sz_stable;
 
 #ifndef __stupidos__
 	prg_name = basename(argv[0]);
@@ -139,6 +141,22 @@ main(int argc, char **argv)
 		printf("  Flags:                     0x%hx\n\n", file_header.f_flags);
 	}
 
+	if (display_optional_header)
+	{
+		if (file_header.f_opthdr)
+		{
+			fread(&aout_header, 1, AOUTHSZ, fp);
+			printf("A.out header\n");
+			printf("  Magic: %hx\n", aout_header.magic);
+			printf("  Entry: 0x%08X\n", aout_header.entry);
+			printf("\n");
+		}
+		else
+		{
+			printf("There are no optional header.\n\n");
+		}
+	}
+
 	if (display_sections)
 	{
 		fseek(fp, file_header.f_opthdr + FILHSZ, SEEK_SET);
@@ -177,6 +195,11 @@ main(int argc, char **argv)
 
 	if (display_symbol_table)
 	{
+		fseek(fp, 0L, SEEK_END);
+		sz_stable = ftell(fp) - file_header.f_symptr + (SYMESZ * file_header.f_nsyms);
+		string_table = malloc(sz_stable);
+		fseek(fp, file_header.f_symptr + (SYMESZ * file_header.f_nsyms), SEEK_SET);
+		fread(string_table, 1, sz_stable, fp);
 		printf("Symbol table contains %d entries:\n", file_header.f_nsyms);
 		printf("  Num:    Value  Type Name\n");
 		assert(sizeof(SYMENT) == SYMESZ);
@@ -186,7 +209,18 @@ main(int argc, char **argv)
 			fread(&sym_entry, 1, SYMESZ, fp);
 			memset(name, 0, 9);
 			memcpy(name, sym_entry.n_name, 8);
-			printf("  %d:    %08x  %hd %s\n", idx, sym_entry.n_value, sym_entry.n_type, name);
+			if (sym_entry.n_zeroes == 0)
+			{
+			}
+			printf("  %2d:    %08x  %hd ", idx, sym_entry.n_value, sym_entry.n_type);
+			if (sym_entry.n_zeroes)
+			{
+				printf("%s\n", name);
+			}
+			else
+			{
+				printf("%s\n", string_table + sym_entry.n_offset);
+			}
 		}
 
 	}

boot/common/fat12.inc

@@ -81,6 +81,7 @@ fat_search_root:
 	ret
 .file_found:
 	mov ax, [es:di + fat_entry.start]
+	mov ebx, [es:di + fat_entry.size]
 	clc
 	ret
 

boot/loader/loader.asm

@@ -55,11 +55,14 @@ _start:
 @@:
 	; detect filesystem (FAT12/16 or StpdFS)
 	; load kernel from filesystem
-	; +---------+--------+---------+
+
-	; | bootsec | sect 1 | stpd sb |
+	; StupidFS layout
-	; +---------+--------+---------+
+	; +---------+---------+---------....--+----....---+
-	; 0        512      1024
+	; | bootsec | stpd sb | i-nodes ...   | data      |
+	; +---------+---------+---------0...--+----....---+
+	; 0        512      1024             XXXX        XXXX
 	;
+	
 	; for now fat12 is asumed
 
 	call fat_load_root
@@ -67,8 +70,12 @@ _start:
 	mov si, szKernelFile
 	call fat_search_root
 	jc .error_not_found
-
 	mov [pKernelStartFat], ax
+	mov [uKernelSize], ebx
+
+	push ebx
+	mov si, szMsgKernelFound
+	call bios_log
 
 	; load fat
 	xor ax, ax
@@ -141,9 +148,11 @@ uDrive    rb 1
 bDriveLBA db FALSE
 
 pKernelStartFat    dw 0
+uKernelSize        dd 0
 
 szMsgStage2        db "StupidOS Loader", 0
 szKernelFile       db "VMSTUPIDSYS", 0
+szMsgKernelFound   db "Kernel found, size: %x", 0
 szMsgErrorA20      db "ERROR: can't enable a20 line", 0
 szMsgErrorMemory   db "ERROR: can't detect available memory", 0
 szMsgErrorSector   db "ERROR: reading sector", CR, LF, 0
@@ -170,6 +179,16 @@ common32:
 	; identity map first 1MB
 	; map kernel to 0xC000000 
 	; -----------------------
+	mov edi, boot_768_page_table
+	mov esi, 0
+	mov ecx, 1023
+.1:
+	cmp esi, MULTIBOOT_BASE
+	jl .2
+.2:
+
+.3:
+
 
 	push STPDBOOT_MAGIC