nits

console.c

@@ -105,7 +105,7 @@ printint(int xx, int base, int sgn)
     cons_putc(buf[i]);
 }
 
-// Print to the input. only understands %d, %x, %p, %s.
+// Print to the console. only understands %d, %x, %p, %s.
 void
 cprintf(char *fmt, ...)
 {
@@ -200,7 +200,6 @@ console_intr(int (*getc)(void))
     case C('P'):  // Process listing.
       procdump();
       break;
-    
     case C('U'):  // Kill line.
       while(input.e > input.w &&
             input.buf[(input.e-1) % INPUT_BUF] != '\n'){
@@ -208,14 +207,12 @@ console_intr(int (*getc)(void))
         cons_putc(BACKSPACE);
       }
       break;
-  
     case C('H'):  // Backspace
       if(input.e > input.w){
         input.e--;
         cons_putc(BACKSPACE);
       }
       break;
-  
     default:
       if(c != 0 && input.e < input.r+INPUT_BUF){
         input.buf[input.e++] = c;

fsvar.h

@@ -16,43 +16,3 @@ struct inode {
 
 #define I_BUSY 0x1
 #define I_VALID 0x2
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-// Blank page.

ide.c

@@ -52,7 +52,7 @@ ide_init(void)
   ide_wait_ready(0);
   
   // Check if disk 1 is present
-  outb(0x1f6, 0xE0 | (1<<4));
+  outb(0x1f6, 0xe0 | (1<<4));
   for(i=0; i<1000; i++){
     if(inb(0x1f7) != 0){
       disk_1_present = 1;
@@ -61,7 +61,7 @@ ide_init(void)
   }
   
   // Switch back to disk 0.
-  outb(0x1f6, 0xE0 | (0<<4));
+  outb(0x1f6, 0xe0 | (0<<4));
 }
 
 // Start the request for b.  Caller must hold ide_lock.
@@ -77,7 +77,7 @@ ide_start_request(struct buf *b)
   outb(0x1f3, b->sector & 0xff);
   outb(0x1f4, (b->sector >> 8) & 0xff);
   outb(0x1f5, (b->sector >> 16) & 0xff);
-  outb(0x1f6, 0xE0 | ((b->dev&1)<<4) | ((b->sector>>24)&0x0f));
+  outb(0x1f6, 0xe0 | ((b->dev&1)<<4) | ((b->sector>>24)&0x0f));
   if(b->flags & B_DIRTY){
     outb(0x1f7, IDE_CMD_WRITE);
     outsl(0x1f0, b->data, 512/4);

main.c

@@ -57,7 +57,7 @@ main(void)
 }
 
 // Additional processors start here.
-void
+static void
 mpmain(void)
 {
   cprintf("cpu%d: starting\n", cpu());

runoff

@@ -134,7 +134,19 @@ perl -e '
 	}
 ' $files >defs
 
-perl -n -e 'print if s/^([0-9]+ [a-zA-Z0-9_]+)\(.*$/\1/;' $files |
+(for i in $files
+do
+	case "$i" in
+	*.S)
+		cat $i | sed 's;#.*;;; s;//.*;;;'
+		;;
+	*)
+		cat $i | sed 's;//.*;;; s;"([^"\\]|\\.)*";;;'
+	esac
+done
+) >alltext
+
+perl -n -e 'print if s/^([0-9]+ [a-zA-Z0-9_]+)\(.*$/\1/;' alltext |
 	egrep -v ' (usage|main|if|for)$' >>defs
 (
 >s.defs
@@ -144,9 +156,11 @@ for i in `awk '{print $2}' defs | sort -fu`
 do
 	defs=`egrep '^[0-9]+ '$i'( |$)' defs | awk '{print $1}'`
 	echo $i $defs >>s.defs
-	uses=`egrep -h '([^a-zA-Z_0-9])'$i'($|[^a-zA-Z_0-9])' $files | awk '{print $1}'`
+	uses=`egrep -h '([^a-zA-Z_0-9])'$i'($|[^a-zA-Z_0-9])' alltext | awk '{print $1}'`
+	if [ "x$defs" != "x$uses" ]; then
 		echo $i $defs
 		echo $uses |fmt -24 | sed 's/^/    /'
+	fi
 done
 ) >refs
 

toc.ftr

@@ -1,6 +1,5 @@
 
 
-
 The source listing is preceded by a cross-reference that lists every defined 
 constant, struct, global variable, and function in xv6.  Each entry gives,
 on the same line as the name, the line number (or, in a few cases, numbers)

toc.hdr

@@ -4,4 +4,3 @@ lines per column, giving one hundred lines per sheet (or page).
 Thus there is a convenient relationship between line numbers and sheet numbers.
 
 
-

trap.c

@@ -48,7 +48,6 @@ trap(struct trapframe *tf)
   // during interrupt handler.  Decrement before returning.
   cpus[cpu()].nlock++;
 
-  // PAGEBREAK: 10
   switch(tf->trapno){
   case IRQ_OFFSET + IRQ_TIMER:
     if(cpu() == 0){
@@ -59,17 +58,14 @@ trap(struct trapframe *tf)
     }
     lapic_eoi();
     break;
-
   case IRQ_OFFSET + IRQ_IDE:
     ide_intr();
     lapic_eoi();
     break;
-  
   case IRQ_OFFSET + IRQ_KBD:
     kbd_intr();
     lapic_eoi();
     break;
-  
   case IRQ_OFFSET + IRQ_SPURIOUS:
     cprintf("spurious interrupt from cpu %d eip %x\n", cpu(), tf->eip);
     lapic_eoi();

trapasm.S

@@ -1,11 +1,9 @@
 .text
-.globl trap
-.globl trapret1
-.globl alltraps
 
 .set SEG_KDATA_SEL, 0x10   # selector for SEG_KDATA
 
   # vectors.S sends all traps here.
+.globl alltraps
 alltraps:
   # Build trap frame.
   pushl %ds