revert to the plan9-style of putcr3 rather than cr3put because
the extra work reading diffs isn't worth the change.

Reference: /n/atom/patch/applied2013/nixcrput
Date: Sat Sep 14 21:54:34 CES 2013
Signed-off-by: quanstro@quanstro.net

--- /sys/src/nix/k10/main.c	Sat Sep 14 21:53:38 2013
+++ /sys/src/nix/k10/main.c	Sat Sep 14 21:53:39 2013
@@ -435,7 +435,7 @@
 
 //	m->pdp[0] = 0 | PtePS | PteP | PteRW;
 	m->pml4[0] = m->pml4[PTLX(KZERO, 3)];
-	cr3put(PADDR(m->pml4));
+	putcr3(PADDR(m->pml4));
 
 //	f = (void*)REBOOTADDR;
 //	memmove(f, rebootcode, sizeof(rebootcode));
--- /sys/src/nix/k10/trap.c	Sat Sep 14 21:53:41 2013
+++ /sys/src/nix/k10/trap.c	Sat Sep 14 21:53:43 2013
@@ -453,9 +453,9 @@
 	 * CR4. If there is a CR4 and machine check extensions, read the machine
 	 * check address and machine check type registers if RDMSR supported.
 	 */
-	iprint("cr0\t%#16.16llux\n", cr0get());
-	iprint("cr2\t%#P\n", cr2get());
-	iprint("cr3\t%#16.16llux\n", cr3get());
+	iprint("cr0\t%#16.16llux\n", getcr0());
+	iprint("cr2\t%#P\n", getcr2());
+	iprint("cr3\t%#16.16llux\n", getcr3());
 
 //	archdumpregs();
 }
@@ -566,7 +566,7 @@
 	int read, user, insyscall;
 	char buf[ERRMAX];
 
-	addr = cr2get();
+	addr = getcr2();
 	user = userureg(ureg);
 	if(!user && vmapsync(addr) == 0)
 		return;
--- /sys/src/nix/k10/mmu.c	Sat Sep 14 21:53:46 2013
+++ /sys/src/nix/k10/mmu.c	Sat Sep 14 21:53:49 2013
@@ -95,7 +95,7 @@
 		memset(UINT2PTR(m->pml4->va), 0, m->pml4->daddr*sizeof(PTE));
 		m->pml4->daddr = 0;
 	}
-	cr3put(m->pml4->pa);
+	putcr3(m->pml4->pa);
 }
 
 void
@@ -283,7 +283,7 @@
 	}
 
 	tssrsp0(STACKALIGN(PTR2UINT(proc->kstack+KSTACK)));
-	cr3put(m->pml4->pa);
+	putcr3(m->pml4->pa);
 	splx(pl);
 }
 
@@ -310,7 +310,7 @@
 	proc->mmuptp[0] = nil;
 
 	tssrsp0(STACKALIGN(m->stack+MACHSTKSZ));
-	cr3put(m->pml4->pa);
+	putcr3(m->pml4->pa);
 }
 
 static void
@@ -719,7 +719,7 @@
 //	kseg2map(pa, sz, 0);
 	if(active.thunderbirdsarego == 0){
 		kseg2map(pa, sz, 0);
-		cr3put(m->pml4->pa);
+		putcr3(m->pml4->pa);
 	}else{
 //		wait for all other maches to reload cr3
 	}
@@ -827,7 +827,7 @@
 
 	nxeon();
 	patinit();
-	cr3put(m->pml4->pa);
+	putcr3(m->pml4->pa);
 	DBG("m %#p pml4 %#p\n", m, m->pml4);
 }
 
@@ -841,7 +841,7 @@
 	DBG("mach%d: %#p pml4 %#p npgsz %d\n", m->machno, m, m->pml4, m->npgsz);
 
 	page = &mach0pml4;
-	page->pa = cr3get();
+	page->pa = getcr3();
 	page->va = PTR2UINT(KADDR(page->pa));
 
 	m->pml4 = page;
--- /sys/src/nix/k10/fpu.c	Sat Sep 14 21:53:52 2013
+++ /sys/src/nix/k10/fpu.c	Sat Sep 14 21:53:53 2013
@@ -490,14 +490,14 @@
 	/*
 	 * It's assumed there is an integrated FPU, so Em is cleared;
 	 */
-	r = cr0get();
+	r = getcr0();
 	r &= ~(Ts|Em);
 	r |= Ne|Mp;
-	cr0put(r);
+	putcr0(r);
 
-	r = cr4get();
+	r = getcr4();
 	r |= Osxmmexcpt|Osfxsr;
-	cr4put(r);
+	putcr4(r);
 
 	_fninit();
 	fxsave = (Fxsave*)((PTR2UINT(buf) + 15) & ~15);
--- /sys/src/nix/k10/fns.h	Sat Sep 14 21:53:56 2013
+++ /sys/src/nix/k10/fns.h	Sat Sep 14 21:53:58 2013
@@ -125,13 +125,13 @@
 void	vsvminit(int);
 void	vunmap(void*, usize);
 
-u64int	cr0get(void);
-void	cr0put(u64int);
-u64int	cr2get(void);
-u64int	cr3get(void);
-void	cr3put(u64int);
-u64int	cr4get(void);
-void	cr4put(u64int);
+u64int	getcr0(void);
+void	putcr0(u64int);
+u64int	getcr2(void);
+u64int	getcr3(void);
+void	putcr3(u64int);
+u64int	getcr4(void);
+void	putcr4(u64int);
 void	gdtget(void*);
 void	gdtput(int, u64int, u16int);
 void	idtput(int, u64int);
--- /sys/src/nix/k10/l64v.s	Sat Sep 14 21:54:00 2013
+++ /sys/src/nix/k10/l64v.s	Sat Sep 14 21:54:02 2013
@@ -135,33 +135,33 @@
 /*
  * Read/write various system registers.
  */
-TEXT cr0get(SB), 1, $-4				/* Processor Control */
+TEXT getcr0(SB), 1, $-4				/* Processor Control */
 	MOVQ	CR0, AX
 	RET
 
-TEXT cr0put(SB), 1, $-4
+TEXT putcr0(SB), 1, $-4
 	MOVQ	RARG, AX
 	MOVQ	AX, CR0
 	RET
 
-TEXT cr2get(SB), 1, $-4				/* #PF Linear Address */
+TEXT getcr2(SB), 1, $-4				/* #PF Linear Address */
 	MOVQ	CR2, AX
 	RET
 
-TEXT cr3get(SB), 1, $-4				/* PML4 Base */
+TEXT getcr3(SB), 1, $-4				/* PML4 Base */
 	MOVQ	CR3, AX
 	RET
 
-TEXT cr3put(SB), 1, $-4
+TEXT putcr3(SB), 1, $-4
 	MOVQ	RARG, AX
 	MOVQ	AX, CR3
 	RET
 
-TEXT cr4get(SB), 1, $-4				/* Extensions */
+TEXT getcr4(SB), 1, $-4				/* Extensions */
 	MOVQ	CR4, AX
 	RET
 
-TEXT cr4put(SB), 1, $-4
+TEXT putcr4(SB), 1, $-4
 	MOVQ	RARG, AX
 	MOVQ	AX, CR4
 	RET