use u32int for registers in the pc kernel.  still not consistent
on this, but getting a little big closer.

Reference: /n/atom/patch/applied/pcu32intreg
Date: Sat Jan 11 22:34:57 CET 2014
Signed-off-by: quanstro@quanstro.net

--- /sys/src/9/pc/dat.h	Sat Jan 11 22:34:33 2014
+++ /sys/src/9/pc/dat.h	Sat Jan 11 22:34:33 2014
@@ -48,11 +48,10 @@
 
 struct Label
 {
-	ulong	sp;
-	ulong	pc;
+	uintptr	sp;
+	uintptr	pc;
 };
 
-
 /*
  * FPsave.status
  */
@@ -69,18 +68,18 @@
 
 struct	FPsave
 {
-	ushort	control;
-	ushort	r1;
-	ushort	status;
-	ushort	r2;
-	ushort	tag;
-	ushort	r3;
-	ulong	pc;
-	ushort	selector;
-	ushort	r4;
-	ulong	operand;
-	ushort	oselector;
-	ushort	r5;
+	u16int	control;
+	u16int	r1;
+	u16int	status;
+	u16int	r2;
+	u16int	tag;
+	u16int	r3;
+	u32int	pc;
+	u16int	selector;
+	u16int	r4;
+	u32int	operand;
+	u16int	oselector;
+	u16int	r5;
 	uchar	regs[80];	/* floating point registers */
 };
 
@@ -140,38 +139,38 @@
 #include "../port/portdat.h"
 
 typedef struct {
-	ulong	link;			/* link (old TSS selector) */
-	ulong	esp0;			/* privilege level 0 stack pointer */
-	ulong	ss0;			/* privilege level 0 stack selector */
-	ulong	esp1;			/* privilege level 1 stack pointer */
-	ulong	ss1;			/* privilege level 1 stack selector */
-	ulong	esp2;			/* privilege level 2 stack pointer */
-	ulong	ss2;			/* privilege level 2 stack selector */
-	ulong	xcr3;			/* page directory base register - not used because we don't use trap gates */
-	ulong	eip;			/* instruction pointer */
-	ulong	eflags;			/* flags register */
-	ulong	eax;			/* general registers */
-	ulong 	ecx;
-	ulong	edx;
-	ulong	ebx;
-	ulong	esp;
-	ulong	ebp;
-	ulong	esi;
-	ulong	edi;
-	ulong	es;			/* segment selectors */
-	ulong	cs;
-	ulong	ss;
-	ulong	ds;
-	ulong	fs;
-	ulong	gs;
-	ulong	ldt;			/* selector for task's LDT */
-	ulong	iomap;			/* I/O map base address + T-bit */
+	u32int	link;			/* link (old TSS selector) */
+	u32int	esp0;			/* privilege level 0 stack pointer */
+	u32int	ss0;			/* privilege level 0 stack selector */
+	u32int	esp1;			/* privilege level 1 stack pointer */
+	u32int	ss1;			/* privilege level 1 stack selector */
+	u32int	esp2;			/* privilege level 2 stack pointer */
+	u32int	ss2;			/* privilege level 2 stack selector */
+	u32int	xcr3;			/* page directory base register - not used because we don't use trap gates */
+	u32int	eip;			/* instruction pointer */
+	u32int	eflags;			/* flags register */
+	u32int	eax;			/* general registers */
+	u32int 	ecx;
+	u32int	edx;
+	u32int	ebx;
+	u32int	esp;
+	u32int	ebp;
+	u32int	esi;
+	u32int	edi;
+	u32int	es;			/* segment selectors */
+	u32int	cs;
+	u32int	ss;
+	u32int	ds;
+	u32int	fs;
+	u32int	gs;
+	u32int	ldt;			/* selector for task's LDT */
+	u32int	iomap;			/* I/O map base address + T-bit */
 } Tss;
 
 struct Segdesc
 {
-	ulong	d0;
-	ulong	d1;
+	u32int	d0;
+	u32int	d1;
 };
 
 struct Mach
@@ -346,13 +345,13 @@
  *  hardware info about a device
  */
 typedef struct {
-	ulong	port;	
+	u32int	port;	
 	int	size;
 } Devport;
 
 struct DevConf
 {
-	ulong	intnum;			/* interrupt number */
+	int	intnum;			/* interrupt number */
 	char	*type;			/* card type, malloced */
 	int	nports;			/* Number of ports */
 	Devport	*ports;			/* The ports themselves */
--- /sys/src/9/pc/main.c	Sat Jan 11 22:34:33 2014
+++ /sys/src/9/pc/main.c	Sat Jan 11 22:34:33 2014
@@ -496,7 +496,7 @@
 			msg = "invalid operation";
 	}
 	snprint(note, sizeof note, "sys: fp: %s fppc=%#p status=%#ux",
-		msg, up->fpsave.pc, status);
+		msg, (uintptr)up->fpsave.pc, status);
 	postnote(up, 1, note, NDebug);
 }
 
@@ -521,7 +521,7 @@
 
 	if((ur->pc & 0xf0000000) == KZERO)
 		panic("fp: status %ux fppc=%#p pc=%#p",
-			up->fpsave.status, up->fpsave.pc, ur->pc);
+			up->fpsave.status, (uintptr)up->fpsave.pc, ur->pc);
 }
 
 /*
--- /sys/src/9/pc/etherelnk3.c	Sat Jan 11 22:34:33 2014
+++ /sys/src/9/pc/etherelnk3.c	Sat Jan 11 22:34:33 2014
@@ -558,7 +558,7 @@
 
 /* On the 575B and C, interrupts need to be acknowledged in CardBus memory space */
 static void
-intrackcb(ulong *cbfn)
+intrackcb(u32int *cbfn)
 {
 	cbfn[1] = 0x8000;
 }