be consistent: no underscores in function names

15 files changed, 121 insertions, 136 deletions

diff --git a/bio.c b/bio.c
index 8955f7a..b761c3b 100644
--- a/bio.c
+++ b/bio.c
@@ -100,7 +100,7 @@ bread(uint dev, uint sector)
 
   b = bget(dev, sector);
   if(!(b->flags & B_VALID))
-    ide_rw(b);
+    iderw(b);
   return b;
 }
 
@@ -111,7 +111,7 @@ bwrite(struct buf *b)
   if((b->flags & B_BUSY) == 0)
     panic("bwrite");
   b->flags |= B_DIRTY;
-  ide_rw(b);
+  iderw(b);
 }
 
 // Release the buffer buf.
diff --git a/console.c b/console.c
index 87c3713..c1c66b2 100644
--- a/console.c
+++ b/console.c
@@ -26,7 +26,7 @@ int use_console_lock = 0;
 // .bochsrc to copy to the stdout:
 //   parport1: enabled=1, file="/dev/stdout"
 static void
-lpt_putc(int c)
+lptputc(int c)
 {
   int i;
 
@@ -40,7 +40,7 @@ lpt_putc(int c)
 }
 
 static void
-cga_putc(int c)
+cgaputc(int c)
 {
   int pos;
   
@@ -72,7 +72,7 @@ cga_putc(int c)
 }
 
 void
-cons_putc(int c)
+consputc(int c)
 {
   if(panicked){
     cli();
@@ -80,8 +80,8 @@ cons_putc(int c)
       ;
   }
 
-  lpt_putc(c);
-  cga_putc(c);
+  lptputc(c);
+  cgaputc(c);
 }
 
 void
@@ -106,7 +106,7 @@ printint(int xx, int base, int sgn)
     buf[i++] = '-';
 
   while(--i >= 0)
-    cons_putc(buf[i]);
+    consputc(buf[i]);
 }
 
 // Print to the console. only understands %d, %x, %p, %s.
@@ -130,7 +130,7 @@ cprintf(char *fmt, ...)
       if(c == '%')
         state = '%';
       else
-        cons_putc(c);
+        consputc(c);
       break;
     
     case '%':
@@ -147,15 +147,15 @@ cprintf(char *fmt, ...)
         if(s == 0)
           s = "(null)";
         for(; *s; s++)
-          cons_putc(*s);
+          consputc(*s);
         break;
       case '%':
-        cons_putc('%');
+        consputc('%');
         break;
       default:
         // Print unknown % sequence to draw attention.
-        cons_putc('%');
-        cons_putc(c);
+        consputc('%');
+        consputc(c);
         break;
       }
       state = 0;
@@ -168,14 +168,14 @@ cprintf(char *fmt, ...)
 }
 
 int
-console_write(struct inode *ip, char *buf, int n)
+consolewrite(struct inode *ip, char *buf, int n)
 {
   int i;
 
   iunlock(ip);
   acquire(&console_lock);
   for(i = 0; i < n; i++)
-    cons_putc(buf[i] & 0xff);
+    consputc(buf[i] & 0xff);
   release(&console_lock);
   ilock(ip);
 
@@ -194,7 +194,7 @@ struct {
 #define C(x)  ((x)-'@')  // Control-x
 
 void
-console_intr(int (*getc)(void))
+consoleintr(int (*getc)(void))
 {
   int c;
 
@@ -208,19 +208,19 @@ console_intr(int (*getc)(void))
       while(input.e != input.w &&
             input.buf[(input.e-1) % INPUT_BUF] != '\n'){
         input.e--;
-        cons_putc(BACKSPACE);
+        consputc(BACKSPACE);
       }
       break;
     case C('H'):  // Backspace
       if(input.e != input.w){
         input.e--;
-        cons_putc(BACKSPACE);
+        consputc(BACKSPACE);
       }
       break;
     default:
       if(c != 0 && input.e-input.r < INPUT_BUF){
         input.buf[input.e++ % INPUT_BUF] = c;
-        cons_putc(c);
+        consputc(c);
         if(c == '\n' || c == C('D') || input.e == input.r+INPUT_BUF){
           input.w = input.e;
           wakeup(&input.r);
@@ -233,7 +233,7 @@ console_intr(int (*getc)(void))
 }
 
 int
-console_read(struct inode *ip, char *dst, int n)
+consoleread(struct inode *ip, char *dst, int n)
 {
   uint target;
   int c;
@@ -271,17 +271,17 @@ console_read(struct inode *ip, char *dst, int n)
 }
 
 void
-console_init(void)
+consoleinit(void)
 {
   initlock(&console_lock, "console");
   initlock(&input.lock, "console input");
 
-  devsw[CONSOLE].write = console_write;
-  devsw[CONSOLE].read = console_read;
+  devsw[CONSOLE].write = consolewrite;
+  devsw[CONSOLE].read = consoleread;
   use_console_lock = 1;
 
-  pic_enable(IRQ_KBD);
-  ioapic_enable(IRQ_KBD, 0);
+  picenable(IRQ_KBD);
+  ioapicenable(IRQ_KBD, 0);
 }
 
 void
diff --git a/defs.h b/defs.h
index a472b2e..c354371 100644
--- a/defs.h
+++ b/defs.h
@@ -14,9 +14,9 @@ void            brelse(struct buf*);
 void            bwrite(struct buf*);
 
 // console.c
-void            console_init(void);
+void            consoleinit(void);
 void            cprintf(char*, ...);
-void            console_intr(int(*)(void));
+void            consoleintr(int(*)(void));
 void            panic(char*) __attribute__((noreturn));
 
 // exec.c
@@ -50,14 +50,14 @@ void            stati(struct inode*, struct stat*);
 int             writei(struct inode*, char*, uint, uint);
 
 // ide.c
-void            ide_init(void);
-void            ide_intr(void);
-void            ide_rw(struct buf *);
+void            ideinit(void);
+void            ideintr(void);
+void            iderw(struct buf *);
 
 // ioapic.c
-void            ioapic_enable(int irq, int cpu);
-extern uchar    ioapic_id;
-void            ioapic_init(void);
+void            ioapicenable(int irq, int cpu);
+extern uchar    ioapicid;
+void            ioapicinit(void);
 
 // kalloc.c
 char*           kalloc(int);
@@ -65,24 +65,24 @@ void            kfree(char*, int);
 void            kinit(void);
 
 // kbd.c
-void            kbd_intr(void);
+void            kbdintr(void);
 
 // lapic.c
 int             cpu(void);
 extern volatile uint*    lapic;
-void            lapic_eoi(void);
-void            lapic_init(int);
-void            lapic_startap(uchar, uint);
+void            lapiceoi(void);
+void            lapicinit(int);
+void            lapicstartap(uchar, uint);
 
 // mp.c
 extern int      ismp;
-int             mp_bcpu(void);
-void            mp_init(void);
-void            mp_startthem(void);
+int             mpbcpu(void);
+void            mpinit(void);
+void            mpstartthem(void);
 
 // picirq.c
-void            pic_enable(int);
-void            pic_init(void);
+void            picenable(int);
+void            picinit(void);
 
 // pipe.c
 int             pipealloc(struct file**, struct file**);
@@ -136,7 +136,7 @@ int             fetchstr(struct proc*, uint, char**);
 void            syscall(void);
 
 // timer.c
-void            timer_init(void);
+void            timerinit(void);
 
 // trap.c
 void            idtinit(void);
diff --git a/ide.c b/ide.c
index afd9b3d..89c8941 100644
--- a/ide.c
+++ b/ide.c
@@ -26,11 +26,11 @@ static struct spinlock ide_lock;
 static struct buf *ide_queue;
 
 static int disk_1_present;
-static void ide_start_request();
+static void idestart(struct buf*);
 
 // Wait for IDE disk to become ready.
 static int
-ide_wait_ready(int check_error)
+idewait(int check_error)
 {
   int r;
 
@@ -42,14 +42,14 @@ ide_wait_ready(int check_error)
 }
 
 void
-ide_init(void)
+ideinit(void)
 {
   int i;
 
   initlock(&ide_lock, "ide");
-  pic_enable(IRQ_IDE);
-  ioapic_enable(IRQ_IDE, ncpu - 1);
-  ide_wait_ready(0);
+  picenable(IRQ_IDE);
+  ioapicenable(IRQ_IDE, ncpu - 1);
+  idewait(0);
   
   // Check if disk 1 is present
   outb(0x1f6, 0xe0 | (1<<4));
@@ -66,12 +66,12 @@ ide_init(void)
 
 // Start the request for b.  Caller must hold ide_lock.
 static void
-ide_start_request(struct buf *b)
+idestart(struct buf *b)
 {
   if(b == 0)
-    panic("ide_start_request");
+    panic("idestart");
 
-  ide_wait_ready(0);
+  idewait(0);
   outb(0x3f6, 0);  // generate interrupt
   outb(0x1f2, 1);  // number of sectors
   outb(0x1f3, b->sector & 0xff);
@@ -88,7 +88,7 @@ ide_start_request(struct buf *b)
 
 // Interrupt handler.
 void
-ide_intr(void)
+ideintr(void)
 {
   struct buf *b;
 
@@ -99,7 +99,7 @@ ide_intr(void)
   }
 
   // Read data if needed.
-  if(!(b->flags & B_DIRTY) && ide_wait_ready(1) >= 0)
+  if(!(b->flags & B_DIRTY) && idewait(1) >= 0)
     insl(0x1f0, b->data, 512/4);
   
   // Wake process waiting for this buf.
@@ -109,7 +109,7 @@ ide_intr(void)
   
   // Start disk on next buf in queue.
   if((ide_queue = b->qnext) != 0)
-    ide_start_request(ide_queue);
+    idestart(ide_queue);
 
   release(&ide_lock);
 }
@@ -119,16 +119,16 @@ ide_intr(void)
 // If B_DIRTY is set, write buf to disk, clear B_DIRTY, set B_VALID.
 // Else if B_VALID is not set, read buf from disk, set B_VALID.
 void
-ide_rw(struct buf *b)
+iderw(struct buf *b)
 {
   struct buf **pp;
 
   if(!(b->flags & B_BUSY))
-    panic("ide_rw: buf not busy");
+    panic("iderw: buf not busy");
   if((b->flags & (B_VALID|B_DIRTY)) == B_VALID)
-    panic("ide_rw: nothing to do");
+    panic("iderw: nothing to do");
   if(b->dev != 0 && !disk_1_present)
-    panic("ide disk 1 not present");
+    panic("idrw: ide disk 1 not present");
 
   acquire(&ide_lock);
 
@@ -140,7 +140,7 @@ ide_rw(struct buf *b)
   
   // Start disk if necessary.
   if(ide_queue == b)
-    ide_start_request(b);
+    idestart(b);
   
   // Wait for request to finish.
   // Assuming will not sleep too long: ignore cp->killed.
diff --git a/ioapic.c b/ioapic.c
index 5b1a46b..bf5f793 100644
--- a/ioapic.c
+++ b/ioapic.c
@@ -32,21 +32,21 @@ struct ioapic {
 };
 
 static uint
-ioapic_read(int reg)
+ioapicread(int reg)
 {
   ioapic->reg = reg;
   return ioapic->data;
 }
 
 static void
-ioapic_write(int reg, uint data)
+ioapicwrite(int reg, uint data)
 {
   ioapic->reg = reg;
   ioapic->data = data;
 }
 
 void
-ioapic_init(void)
+ioapicinit(void)
 {
   int i, id, maxintr;
 
@@ -54,21 +54,21 @@ ioapic_init(void)
     return;
 
   ioapic = (volatile struct ioapic*)IOAPIC;
-  maxintr = (ioapic_read(REG_VER) >> 16) & 0xFF;
-  id = ioapic_read(REG_ID) >> 24;
-  if(id != ioapic_id)
-    cprintf("ioapic_init: id isn't equal to ioapic_id; not a MP\n");
+  maxintr = (ioapicread(REG_VER) >> 16) & 0xFF;
+  id = ioapicread(REG_ID) >> 24;
+  if(id != ioapicid)
+    cprintf("ioapicinit: id isn't equal to ioapicid; not a MP\n");
 
   // Mark all interrupts edge-triggered, active high, disabled,
   // and not routed to any CPUs.
   for(i = 0; i <= maxintr; i++){
-    ioapic_write(REG_TABLE+2*i, INT_DISABLED | (IRQ_OFFSET + i));
-    ioapic_write(REG_TABLE+2*i+1, 0);
+    ioapicwrite(REG_TABLE+2*i, INT_DISABLED | (IRQ_OFFSET + i));
+    ioapicwrite(REG_TABLE+2*i+1, 0);
   }
 }
 
 void
-ioapic_enable(int irq, int cpunum)
+ioapicenable(int irq, int cpunum)
 {
   if(!ismp)
     return;
@@ -76,6 +76,6 @@ ioapic_enable(int irq, int cpunum)
   // Mark interrupt edge-triggered, active high,
   // enabled, and routed to the given cpunum,
   // which happens to be that cpu's APIC ID.
-  ioapic_write(REG_TABLE+2*irq, IRQ_OFFSET + irq);
-  ioapic_write(REG_TABLE+2*irq+1, cpunum << 24);
+  ioapicwrite(REG_TABLE+2*irq, IRQ_OFFSET + irq);
+  ioapicwrite(REG_TABLE+2*irq+1, cpunum << 24);
 }
diff --git a/kbd.c b/kbd.c
index 2483949..32c1463 100644
--- a/kbd.c
+++ b/kbd.c
@@ -4,7 +4,7 @@
 #include "kbd.h"
 
 int
-kbd_getc(void)
+kbdgetc(void)
 {
   static uint shift;
   static uchar *charcode[4] = {
@@ -44,7 +44,7 @@ kbd_getc(void)
 }
 
 void
-kbd_intr(void)
+kbdintr(void)
 {
-  console_intr(kbd_getc);
+  consoleintr(kbdgetc);
 }
diff --git a/lapic.c b/lapic.c
index 4bc3e7c..915765a 100644
--- a/lapic.c
+++ b/lapic.c
@@ -46,7 +46,7 @@ lapicw(int index, int value)
 
 //PAGEBREAK!
 void
-lapic_init(int c)
+lapicinit(int c)
 {
   if(!lapic) 
     return;
@@ -99,11 +99,11 @@ cpu(void)
   // Would prefer to panic but even printing is chancy here:
   // almost everything, including cprintf and panic, calls cpu,
   // often indirectly through acquire and release.
-  if(read_eflags()&FL_IF){
+  if(readeflags()&FL_IF){
     static int n;
     if(n++ == 0)
       cprintf("cpu called from %x with interrupts enabled\n",
-        ((uint*)read_ebp())[1]);
+        __builtin_return_address(0));
   }
 
   if(lapic)
@@ -113,7 +113,7 @@ cpu(void)
 
 // Acknowledge interrupt.
 void
-lapic_eoi(void)
+lapiceoi(void)
 {
   if(lapic)
     lapicw(EOI, 0);
@@ -136,7 +136,7 @@ microdelay(int us)
 // Start additional processor running bootstrap code at addr.
 // See Appendix B of MultiProcessor Specification.
 void
-lapic_startap(uchar apicid, uint addr)
+lapicstartap(uchar apicid, uint addr)
 {
   int i;
   ushort *wrv;
diff --git a/main.c b/main.c
index fbad920..f4914db 100644
--- a/main.c
+++ b/main.c
@@ -12,22 +12,22 @@ static void mpmain(void) __attribute__((noreturn));
 int
 main(void)
 {
-  mp_init(); // collect info about this machine
-  lapic_init(mp_bcpu());
+  mpinit(); // collect info about this machine
+  lapicinit(mpbcpu());
   cprintf("\ncpu%d: starting xv6\n\n", cpu());
 
   pinit();         // process table
   binit();         // buffer cache
-  pic_init();      // interrupt controller
-  ioapic_init();   // another interrupt controller
+  picinit();      // interrupt controller
+  ioapicinit();   // another interrupt controller
   kinit();         // physical memory allocator
   tvinit();        // trap vectors
   fileinit();      // file table
   iinit();         // inode cache
-  console_init();  // I/O devices & their interrupts
-  ide_init();      // disk
+  consoleinit();  // I/O devices & their interrupts
+  ideinit();      // disk
   if(!ismp)
-    timer_init();  // uniprocessor timer
+    timerinit();  // uniprocessor timer
   userinit();      // first user process
   bootothers();    // start other processors
 
@@ -42,8 +42,8 @@ mpmain(void)
 {
   cprintf("cpu%d: mpmain\n", cpu());
   idtinit();
-  if(cpu() != mp_bcpu())
-    lapic_init(cpu());
+  if(cpu() != mpbcpu())
+    lapicinit(cpu());
   setupsegs(0);
   xchg(&cpus[cpu()].booted, 1);
 
@@ -71,7 +71,7 @@ bootothers(void)
     stack = kalloc(KSTACKSIZE);
     *(void**)(code-4) = stack + KSTACKSIZE;
     *(void**)(code-8) = mpmain;
-    lapic_startap(c->apicid, (uint)code);
+    lapicstartap(c->apicid, (uint)code);
 
     // Wait for cpu to get through bootstrap.
     while(c->booted == 0)
diff --git a/mp.c b/mp.c
index 1015de9..393119d 100644
--- a/mp.c
+++ b/mp.c
@@ -14,10 +14,10 @@ struct cpu cpus[NCPU];
 static struct cpu *bcpu;
 int ismp;
 int ncpu;
-uchar ioapic_id;
+uchar ioapicid;
 
 int
-mp_bcpu(void)
+mpbcpu(void)
 {
   return bcpu-cpus;
 }
@@ -35,7 +35,7 @@ sum(uchar *addr, int len)
 
 // Look for an MP structure in the len bytes at addr.
 static struct mp*
-mp_search1(uchar *addr, int len)
+mpsearch1(uchar *addr, int len)
 {
   uchar *e, *p;
 
@@ -52,7 +52,7 @@ mp_search1(uchar *addr, int len)
 // 2) in the last KB of system base memory;
 // 3) in the BIOS ROM between 0xE0000 and 0xFFFFF.
 static struct mp*
-mp_search(void)
+mpsearch(void)
 {
   uchar *bda;
   uint p;
@@ -60,14 +60,14 @@ mp_search(void)
 
   bda = (uchar*)0x400;
   if((p = ((bda[0x0F]<<8)|bda[0x0E]) << 4)){
-    if((mp = mp_search1((uchar*)p, 1024)))
+    if((mp = mpsearch1((uchar*)p, 1024)))
       return mp;
   } else {
     p = ((bda[0x14]<<8)|bda[0x13])*1024;
-    if((mp = mp_search1((uchar*)p-1024, 1024)))
+    if((mp = mpsearch1((uchar*)p-1024, 1024)))
       return mp;
   }
-  return mp_search1((uchar*)0xF0000, 0x10000);
+  return mpsearch1((uchar*)0xF0000, 0x10000);
 }
 
 // Search for an MP configuration table.  For now,
@@ -76,12 +76,12 @@ mp_search(void)
 // if correct, check the version.
 // To do: check extended table checksum.
 static struct mpconf*
-mp_config(struct mp **pmp)
+mpconfig(struct mp **pmp)
 {
   struct mpconf *conf;
   struct mp *mp;
 
-  if((mp = mp_search()) == 0 || mp->physaddr == 0)
+  if((mp = mpsearch()) == 0 || mp->physaddr == 0)
     return 0;
   conf = (struct mpconf*)mp->physaddr;
   if(memcmp(conf, "PCMP", 4) != 0)
@@ -95,7 +95,7 @@ mp_config(struct mp **pmp)
 }
 
 void
-mp_init(void)
+mpinit(void)
 {
   uchar *p, *e;
   struct mp *mp;
@@ -104,7 +104,7 @@ mp_init(void)
   struct mpioapic *ioapic;
 
   bcpu = &cpus[ncpu];
-  if((conf = mp_config(&mp)) == 0)
+  if((conf = mpconfig(&mp)) == 0)
     return;
 
   ismp = 1;
@@ -122,7 +122,7 @@ mp_init(void)
       continue;
     case MPIOAPIC:
       ioapic = (struct mpioapic*)p;
-      ioapic_id = ioapic->apicno;
+      ioapicid = ioapic->apicno;
       p += sizeof(struct mpioapic);
       continue;
     case MPBUS:
@@ -131,8 +131,8 @@ mp_init(void)
       p += 8;
       continue;
     default:
-      cprintf("mp_init: unknown config type %x\n", *p);
-      panic("mp_init");
+      cprintf("mpinit: unknown config type %x\n", *p);
+      panic("mpinit");
     }
   }
 
diff --git a/picirq.c b/picirq.c
index 1cc9953..be505a0 100644
--- a/picirq.c
+++ b/picirq.c
@@ -15,7 +15,7 @@
 static ushort irqmask = 0xFFFF & ~(1<<IRQ_SLAVE);
 
 static void
-pic_setmask(ushort mask)
+picsetmask(ushort mask)
 {
   irqmask = mask;
   outb(IO_PIC1+1, mask);
@@ -23,14 +23,14 @@ pic_setmask(ushort mask)
 }
 
 void
-pic_enable(int irq)
+picenable(int irq)
 {
-  pic_setmask(irqmask & ~(1<<irq));
+  picsetmask(irqmask & ~(1<<irq));
 }
 
 // Initialize the 8259A interrupt controllers.
 void
-pic_init(void)
+picinit(void)
 {
   // mask all interrupts
   outb(IO_PIC1+1, 0xFF);
@@ -80,5 +80,5 @@ pic_init(void)
   outb(IO_PIC2, 0x0a);             // OCW3
 
   if(irqmask != 0xFFFF)
-    pic_setmask(irqmask);
+    picsetmask(irqmask);
 }
diff --git a/proc.c b/proc.c
index 5ecf474..28365a2 100644
--- a/proc.c
+++ b/proc.c
@@ -242,7 +242,7 @@ sched(void)
 {
   int intena;
 
-  if(read_eflags()&FL_IF)
+  if(readeflags()&FL_IF)
     panic("sched interruptible");
   if(cp->state == RUNNING)
     panic("sched running");
diff --git a/spinlock.c b/spinlock.c
index 183e730..3784b24 100644
--- a/spinlock.c
+++ b/spinlock.c
@@ -100,7 +100,7 @@ pushcli(void)
 {
   int eflags;
   
-  eflags = read_eflags();
+  eflags = readeflags();
   cli();
   if(cpus[cpu()].ncli++ == 0)
     cpus[cpu()].intena = eflags & FL_IF;
@@ -109,7 +109,7 @@ pushcli(void)
 void
 popcli(void)
 {
-  if(read_eflags()&FL_IF)
+  if(readeflags()&FL_IF)
     panic("popcli - interruptible");
   if(--cpus[cpu()].ncli < 0)
     panic("popcli");
diff --git a/timer.c b/timer.c
index e270db7..8fdecee 100644
--- a/timer.c
+++ b/timer.c
@@ -22,13 +22,13 @@
 #define TIMER_16BIT     0x30    // r/w counter 16 bits, LSB first
 
 void
-timer_init(void)
+timerinit(void)
 {
   // Interrupt 100 times/sec.
   outb(TIMER_MODE, TIMER_SEL0 | TIMER_RATEGEN | TIMER_16BIT);
   outb(IO_TIMER1, TIMER_DIV(100) % 256);
   outb(IO_TIMER1, TIMER_DIV(100) / 256);
-  pic_enable(IRQ_TIMER);
+  picenable(IRQ_TIMER);
 }
 
 
diff --git a/trap.c b/trap.c
index fd00071..f35f8de 100644
--- a/trap.c
+++ b/trap.c
@@ -52,20 +52,20 @@ trap(struct trapframe *tf)
       wakeup(&ticks);
       release(&tickslock);
     }
-    lapic_eoi();
+    lapiceoi();
     break;
   case IRQ_OFFSET + IRQ_IDE:
-    ide_intr();
-    lapic_eoi();
+    ideintr();
+    lapiceoi();
     break;
   case IRQ_OFFSET + IRQ_KBD:
-    kbd_intr();
-    lapic_eoi();
+    kbdintr();
+    lapiceoi();
     break;
   case IRQ_OFFSET + IRQ_SPURIOUS:
     cprintf("cpu%d: spurious interrupt at %x:%x\n",
             cpu(), tf->cs, tf->eip);
-    lapic_eoi();
+    lapiceoi();
     break;
     
   default:
diff --git a/x86.h b/x86.h
index 08e1798..80d7487 100644
--- a/x86.h
+++ b/x86.h
@@ -48,15 +48,6 @@ stosb(void *addr, int data, int cnt)
                "memory", "cc");
 }
 
-static inline uint
-read_ebp(void)
-{
-  uint ebp;
-  
-  asm volatile("movl %%ebp, %0" : "=a" (ebp));
-  return ebp;
-}
-
 struct segdesc;
 
 static inline void
@@ -92,19 +83,13 @@ ltr(ushort sel)
 }
 
 static inline uint
-read_eflags(void)
+readeflags(void)
 {
   uint eflags;
   asm volatile("pushfl; popl %0" : "=r" (eflags));
   return eflags;
 }
 
-static inline void
-write_eflags(uint eflags)
-{
-  asm volatile("pushl %0; popfl" : : "r" (eflags));
-}
-
 static inline uint
 xchg(volatile uint *addr, uint newval)
 {