ka

Makefile

@@ -2,6 +2,7 @@
 # See the LICENSE file in the project root for more information.
 
 KODIR=fs
+KSDIR=vm/ob
 
 KVVM=$(KODIR)/kvisc.exe
 
@@ -16,12 +17,10 @@ kas: kpc as/regs.lst as/k-as.py
 dos: kas dosclean
 	@cd ka && make --no-print-directory -s
 
-#@as/k-as.py ka/dos.k 0x100000 $(AOUT) $(ASYM)
-
 .PHONY: clean dosclean
 
 dosclean:
-	@rm -f $(KODIR)/*.com $(KODIR)/*.sym 
+	@rm -f $(KODIR)/*.com $(KSDIR)/*.sym
 
 inclean:
 	@rm -f vm/ob/arch_i.h vm/ob/instrs.lst vm/ob/in/*.o
@@ -31,8 +30,7 @@ clean: dosclean
 	@rm -f $(KVVM) as/instrs.lst
 
 test: dos
-	@$(KVVM) $(KODIR)/doskrnl.com $(KODIR)/doskrnl.sym
-	@rm -f $(AOUT) $(ASYM)
+	@$(KVVM) $(KODIR)/doskrnl.com $(KSDIR)/doskrnl.sym
 
 wc: clean
 	@cat $(shell find -type f -name '*' ! -path './.git/*' | egrep '(ka|vm)/*') | wc -l

ka/Makefile

@@ -4,12 +4,13 @@
 all: dos
 
 KODIR=../fs
+KSDIR=../vm/ob
 
 KSRC = $(shell ls *.k)
 KCOM = $(patsubst %.k,$(KODIR)/%.com,$(KSRC))
 
 $(KODIR)/%.com: %.k
-	@../as/k-as.py $< 0x100000 $@ $(patsubst %.k,$(KODIR)/%.sym,$<)
+	@../as/k-as.py $< 0x100000 $@ $(patsubst %.k,$(KSDIR)/%.sym,$<)
 
 dos: $(KCOM)
 

ka/crt/fmt/printf.k

@@ -30,6 +30,7 @@ nprintf:
 
 ;
 ; Print a string
+; Guaranteed to only affect rcx and ax0
 ;
 print:
     mov rcx, STRLEN_MAX

ka/crt/sys.k

@@ -32,7 +32,7 @@ Sys.FindFirst := 0x20
 Sys.FindNext := 0x21
 
 ;
-; OPEN/CREATE syscalls
+; OPEN syscall
 ;
 ; IN
 ;   ax0 = name string
@@ -41,8 +41,29 @@ Sys.FindNext := 0x21
 ;   rax = handle of file, or <0 if couldn't open
 ;
 Sys.OpenFile := 0x30
+
+;
+; CREATE syscall
+;
+; IN
+;   ax0 = name string
+;
+; OUT
+;   rax = 0 on success, or <0 if couldn't open
+;
 Sys.CreateFile := 0x31
 
+;
+; REMOVE syscall
+;
+; IN
+;   ax0 = name string
+;
+; OUT
+;   rax = 0 on success, or <0 if couldn't open
+;
+Sys.RemoveFile := 0x32
+
 ;
 ; CLOSE syscall
 ;

ka/sys/drv/diskdev.k

@@ -25,6 +25,10 @@ DISK.CreateFile:
     iocall DISKDEV, 27
     ret
 
+DISK.RemoveFile:
+    iocall DISKDEV, 28
+    ret
+
 DISK.ReadFile:
     iocall DISKDEV, 32
     ret

ka/sys/intr/trap0.k

@@ -14,14 +14,18 @@ trap0_handler:
 
     jmp.axz .handle_Shutdown
     b.z rax, Sys.Exit, .handle_Exit
+    b.z rax, Sys.ReadFile, .handle_ReadFile
+    b.z rax, Sys.OpenFile, .handle_OpenFile
+    b.z rax, Sys.CloseFile, .handle_CloseFile
+    b.z rax, Sys.CreateFile, .handle_CreateFile
+    b.z rax, Sys.RemoveFile, .handle_RemoveFile
     b.z rax, Sys.FindNext, .handle_FindNext
     b.z rax, Sys.FindFirst, .handle_FindFirst
-    b.z rax, Sys.OpenFile, .handle_OpenFile
-    b.z rax, Sys.CreateFile, .handle_CreateFile
-    b.z rax, Sys.CloseFile, .handle_CloseFile
-    b.z rax, Sys.ReadFile, .handle_ReadFile
     b.z rax, Sys.EnterHaltMode, .handle_HaltMode
+
     mov rax, 1 << 63
+    mov rcx, 1 << 63
+    mov rdx, 1 << 63
 
 .fini.savecx:
     mov ax2, rcx
@@ -108,6 +112,11 @@ trap0_handler:
     call DISK.CreateFile
     jmp .fini
 
+.handle_RemoveFile:
+    inc ax0, r12
+    call DISK.RemoveFile
+    jmp .fini
+
 .handle_CloseFile:
     call DISK.CloseFile
     jmp .fini

ka/usr/cmd/dir.k

@@ -9,8 +9,12 @@ builtins.dir:
 
     push r12
     push r13
+    push r14
+    push r15
 
-    mov r12, zero        # no. of files found
+    mov r12, zero       # no. of files found
+    mov r13, zero       # no. of directories found
+    mov r14, zero       # total amount of bytes found
 
     call print, .dirmsg
 
@@ -29,16 +33,17 @@ builtins.dir:
     trap 0
 
 .list:
-    mov r13, rcx        # file size
-
     jmp.axz .end
 
-    ; found something
-    inc r12, 1
+    mov r15, rcx        # file size
+    inc r14, rcx
 
     ; directory?
     jmp.dxnz .is_dir
 
+    ; found a file
+    inc r12, 1
+
     ; separate extension from file name
     mov rcx, FNAME_MAX
     mov rsi, .buf
@@ -89,10 +94,10 @@ builtins.dir:
     mov rcx, 3
     prn.rep ' '
 
-    shr rax, r13, 10
-    and r13, r13, 1023
+    shr rax, r15, 10
+    and r15, r15, 1023
 
-    push r13
+    push r15
     push rax
     call printf, .bytesstr
     inc rsp, 16
@@ -103,12 +108,24 @@ builtins.dir:
     jmp .next
 
 .end:
+    shr rax, r14, 10
+    shr rdx, rax, 10
+    and rax, rax, 1023
+    and r14, r14, 1023
+
+    push r14
+    push rax
+    push rdx
+    call printf, .endstr0
+    inc rsp, 24
+
+    push r13
     push r12
     call printf, .endstr1
-    inc rsp, 8
-
-    call print, .endstr2
+    inc rsp, 16
 
+    pop r15
+    pop r14
     pop r13
     pop r12
 
@@ -117,24 +134,26 @@ builtins.dir:
 
     ; special case: direcory
 .is_dir:
+    inc r13, 1
+
     mov rcx, STRLEN_MAX
     mov rdx, .buf
     prns.rep.nz rdx
 
     sub rcx, STRLEN_MAX, rcx
-    b.ae rcx, N, .is_dir.print_ext
     sub rcx, N, rcx
     prn.rep ' '
 
-.is_dir.print_ext:
     call print, .dir_ext
 
     jmp .print_bytes
 
 .buf = [FNAME_MAX]
 .dir_ext = " <DIR>"
-.endstr1 = "             %d file(s)\n"
-.endstr2 = "             0 dir(s)\n"
+.endstr0 = "             total %dMB + %dKB + %dB\n"
+.endstr1 = "             found %d file(s), %d dir(s)\n"
 .dirmsg = "Directory of C:\\\n\n"
-.bytesstr = "%d kilobytes + %d bytes"
+
+.bytesstr = "%d kilobytes + %d bytes"
+# .bytesstr = "%dMB + %dKB + %dB" # too soon
 

ka/usr/cmd/main.k

@@ -146,6 +146,10 @@ main:
     call strcmp, argv0, .builtin_echo
     jmp.axz .handle_ECHO
 
+.builtin_erase = "erase"
+    call strcmp, argv0, .builtin_erase
+    jmp.axz .handle_ERASE
+
 .builtin_exit = "exit"
     call strcmp, argv0, .builtin_exit
     jmp.axz .handle_EXIT
@@ -170,13 +174,17 @@ main:
     call strcmp, argv0, .builtin_prompt
     jmp.axz .handle_PROMPT
 
+.builtin_remove = "remove"
+    call strcmp, argv0, .builtin_remove
+    jmp.axz .handle_REMOVE
+
 .builtin_time = "time"
     call strcmp, argv0, .builtin_time
     jmp.axz .handle_TIME
 
-.builtin_ver = "ver"
-    call strcmp, argv0, .builtin_ver
-    jmp.axz .handle_VER
+.builtin_vers = "vers"
+    call strcmp, argv0, .builtin_vers
+    jmp.axz .handle_VERS
 
     jmp .command_not_found
 
@@ -222,6 +230,16 @@ main:
     prn 10
     jmp .print_prompt
 
+.handle_ERASE:
+    mov rax, Sys.RemoveFile
+    mov ax0, q[argv1pos]
+    b.z ax0, zero, .need_params
+    trap 0
+
+    b.l rax, zero, .couldnt_remove
+
+    jmp .handle_MAKE    ; re-create it back
+
 .handle_EXIT:
     mov rax, Sys.Shutdown
     trap 0
@@ -278,6 +296,16 @@ main:
 
     jmp .print_prompt
 
+.handle_REMOVE:
+    mov rax, Sys.RemoveFile
+    mov ax0, q[argv1pos]
+    b.z ax0, zero, .need_params
+    trap 0
+
+    b.l rax, zero, .couldnt_remove
+
+    jmp .print_prompt
+
 .handle_TIME:
     call GetTimeUTC
 
@@ -291,7 +319,7 @@ main:
 
 .timefmt = "%d:%d:%d\n"
 
-.handle_VER:
+.handle_VERS:
     call print, cmd.versionstr
     prn 10
 
@@ -304,12 +332,14 @@ main:
     call print, .helpmsg.dir
     call print, .helpmsg.dump
     call print, .helpmsg.echo
+    call print, .helpmsg.erase
     call print, .helpmsg.exit
     call print, .helpmsg.help
     call print, .helpmsg.halt
     call print, .helpmsg.make
     call print, .helpmsg.print
     call print, .helpmsg.prompt
+    call print, .helpmsg.remove
     call print, .helpmsg.time
     call print, .helpmsg.ver
 
@@ -321,14 +351,16 @@ main:
 .helpmsg.dir    = "    DIR        Print contents of current directory\n"
 .helpmsg.dump   = "    DUMP       Toggles debug instruction dumping\n"
 .helpmsg.echo   = "    ECHO       Write arguments to standard output\n"
+.helpmsg.erase  = "    ERASE      Empties a file, making it blank\n"
 .helpmsg.exit   = "    EXIT       Initiate machine shutdown\n"
 .helpmsg.help   = "    HELP       Display these messages\n"
 .helpmsg.halt   = "    HALT       Put processor in halt mode\n"
 .helpmsg.make   = "    MAKE       Create an empty file\n"
 .helpmsg.print  = "    PRINT      Display contents of text file\n"
 .helpmsg.prompt = "    PROMPT     Change the command line prompt\n"
+.helpmsg.remove = "    REMOVE     Deletes a file (permanently)\n"
 .helpmsg.time   = "    TIME       Display current time of day\n"
-.helpmsg.ver    = "    VER        Display current COMMAND.COM version\n"
+.helpmsg.ver    = "    VERS       Display current COMMAND.COM version\n"
 
 .command_not_found:
     call print, argv0
@@ -367,6 +399,16 @@ main:
 
 .cno_errmsg = "%s: %s: an error occured while opening file\n"
 
+.couldnt_remove:
+    push q[argv1pos]
+    push argv0
+    call printf, .cne_errmsg
+    inc rsp, 16
+
+    jmp .print_prompt
+
+.cne_errmsg = "%s: %s: an error occured while removing file\n"
+
 .couldnt_read:
     push q[argv1pos]
     push argv0

vm/dv/diskdev.c

@@ -112,6 +112,23 @@ long diskdev_open(dev_t *dev)
     return 0;
 }
 
+long diskdev_close(dev_t *dev)
+{
+    GETDISK();
+
+    if (R(AX0) >= MAXOPEN)
+        return -1;
+
+    if (disk->table[R(AX0)] <= 0)
+        return -1;
+
+    close(disk->table[R(AX0)]);
+
+    return 0;
+}
+
+//----------------------------------------------------------------------------//
+
 long diskdev_create(dev_t *dev)
 {
     int tmp;
@@ -133,18 +150,22 @@ long diskdev_create(dev_t *dev)
     return 0;
 }
 
-long diskdev_close(dev_t *dev)
+long diskdev_remove(dev_t *dev)
 {
-    GETDISK();
+    int tmp;
+    char buf[NAME_MAX+4] = { 'f', 's', '/', 0 };
 
-    if (R(AX0) >= MAXOPEN)
+    readstr(R(AX0), NAME_MAX, buf+3);
+
+    tmp = remove(buf);
+
+    if (tmp < 0)
+    {
+        perror("diskdev: remove");
         return -1;
+    }
 
-    if (disk->table[R(AX0)] <= 0)
-        return -1;
-
-    close(disk->table[R(AX0)]);
-
+    R(RAX) = 0;
     return 0;
 }
 
@@ -201,6 +222,7 @@ long diskdev_poweron(dev_t *dev)
     dev->fslots[25] = diskdev_open;
     dev->fslots[26] = diskdev_close;
     dev->fslots[27] = diskdev_create;
+    dev->fslots[28] = diskdev_remove;
 
     dev->fslots[32] = diskdev_read;
 

vm/pc/console.c

@@ -13,8 +13,8 @@
 #   define _MULT 2
 #endif
 
-#define CONSOLE_WIDTH       (80)
-#define CONSOLE_HEIGHT      (25)
+#define CONSOLE_WIDTH       (90)
+#define CONSOLE_HEIGHT      (30)
 #define CONSOLE_FONT_SIZE   (16 * _MULT)
 #define SCREEN_WIDTH        (9 * CONSOLE_WIDTH * _MULT)
 #define SCREEN_HEIGHT       (16 * CONSOLE_HEIGHT * _MULT)