code: 9ferno

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added a global DBG macro

--- a/9front/include/lib9.h

+++ b/9front/include/lib9.h

@@ -12,3 +12,5 @@

 #define	setbinmode()

 #define	USE_FPdbleword

+

+#define	DBG	if(debug)print

--- a/OpenBSD/amd64/include/lib9.h

+++ b/OpenBSD/amd64/include/lib9.h

@@ -39,6 +39,7 @@

 #define __LITTLE_ENDIAN

 #define	nil		((void*)0)

+#define	DBG	if(debug)print

 typedef unsigned int	mpdigit;	/* for /sys/include/mp.h */

 typedef unsigned char	uchar;

--- a/include/kern.h

+++ b/include/kern.h

@@ -4,6 +4,8 @@

 #define	offsetof(s, m)	(u32)(&(((s*)0)->m))

 #define	assert(x)	if(x){}else _assert("x")

+#define	DBG	if(debug)print

+

 /*

  * mem routines

  */

--- a/libinterp/readmod.c

+++ b/libinterp/readmod.c

@@ -4,6 +4,8 @@

 #include "kernel.h"

 #include "dynld.h"

+static int debug = 0;

+

 Module*

 readmod(char *path, Module *m, int sync)

 {

--- a/libinterp/xec.c

+++ b/libinterp/xec.c

@@ -1,13 +1,14 @@

-#include <lib9.h>

+#include "lib9.h"

 #include "isa.h"

 #include "interp.h"

 #include "raise.h"

 #include "pool.h"

+static int debug = 0;

+

 REG	R;			/* Virtual Machine registers */

 String	snil;			/* String known to be zero length */

-#define DBG	if(0)print

 #define Stmp	*((WORD*)(R.FP+NREG*IBY2WD))

 #define Dtmp	*((WORD*)(R.FP+(NREG+2)*IBY2WD))

--- a/os/pc/pcipc.c

+++ b/os/pc/pcipc.c

@@ -7,7 +7,7 @@

 #include "../port/pci.h"

 #include "../port/error.h"

-#define DBG	if(1) print

+static int debug = 0;

 enum

 {	/* configuration mechanism #1 */

--- a/os/port/chan.c

+++ b/os/port/chan.c

@@ -5,7 +5,7 @@

 #include	"fns.h"

 #include	"../port/error.h"

-#define DBG if(0)print

+static int debug = 0;

 enum

 {

--- a/os/port/devmnt.c

+++ b/os/port/devmnt.c

@@ -5,6 +5,8 @@

 #include	"fns.h"

 #include	"../port/error.h"

+static int debug = 0;

+

 /*

  * References are managed as follows:

  * The channel to the server - a network connection or pipe - has one

--- a/os/port/dis.c

+++ b/os/port/dis.c

@@ -9,7 +9,7 @@

 #include <kernel.h>

 #include "raise.h"

-#define DBG if(0)print

+static int debug = 0;

 void	vmachine(void*);

--- a/os/port/lib.h

+++ b/os/port/lib.h

@@ -6,6 +6,8 @@

 #define offsetof(s, m)	(u32)(&(((s*)0)->m))

 #define assert(x)	if(x){}else _assert("x")

+#define	DBG	if(debug)print

+

 /*

  * mem routines

  */

--- a/os/port/rdb.c

+++ b/os/port/rdb.c

@@ -8,7 +8,7 @@

 int rdbstarted;

-#define DBG	if(1)scrprint

+#define DBGS	if(1)scrprint

 #pragma varargck argpos scrprint 1

 static Ureg ureg;

--- a/os/port/sysfile.c

+++ b/os/port/sysfile.c

@@ -5,7 +5,7 @@

 #include	"fns.h"

 #include	"../port/error.h"

-#define DBG if(1)print

+static int debug = 0;

 static void

 unlockfgrp(Fgrp *f)