Fix compiler warnings that appear only on OpenBSD.

src/arch/i386/drivers/net/undinet.c

 		DBGC ( undinic, "UNDINIC %p %s failed: %s\n", undinic,
 		       undinet_function_name ( function ), strerror ( rc ) );
 		DBGC ( undinic, "UNDINIC %p parameters at %04x:%04x length "
-		       "%#02x, entry point at %04x:%04x\n", undinic,
+		       "%#02zx, entry point at %04x:%04x\n", undinic,
 		       rm_params.segment, rm_params.offset, params_len,
 		       undinet_entry_point.segment,
 		       undinet_entry_point.offset );

src/arch/i386/drivers/net/undirom.c

 	undirom->data_size = undi_rom_id.DataSize;
 
 	DBGC ( undirom, "UNDIROM %p has UNDI loader at %04x:%04x "
-	       "(code %04x data %04x)\n", undirom,
+	       "(code %04zx data %04zx)\n", undirom,
 	       undirom->loader_entry.segment, undirom->loader_entry.offset,
 	       undirom->code_size, undirom->data_size );
 	return 0;

src/arch/i386/firmware/pcbios/smbios.c

 		strings_offset = ( offset + header.length );
 		if ( strings_offset > smbios->length ) {
 			DBG ( "SMBIOS structure at offset %zx with length "
-			      "%zx extends beyond SMBIOS\n", offset,
+			      "%x extends beyond SMBIOS\n", offset,
 			      header.length );
 			return -ENOENT;
 		}
 		strings->length = ( terminator_offset - strings_offset );
 
 		DBG ( "SMBIOS structure at offset %zx has type %d, "
-		      "length %zx, strings length %zx\n",
+		      "length %x, strings length %zx\n",
 		      offset, header.type, header.length, strings->length );
 
 		/* If this is the structure we want, return */

src/arch/i386/image/bzimage.c

 	shutdown();
 
 	DBGC ( image, "bzImage %p jumping to RM kernel at %04x:0000 "
-	       "(stack %04x:%04x)\n", image,
+	       "(stack %04x:%04zx)\n", image,
 	       ( exec_ctx.rm_kernel_seg + 0x20 ),
 	       exec_ctx.rm_kernel_seg, exec_ctx.rm_heap );
 

src/arch/i386/image/nbi.c

 	} while ( ! NBI_LAST_SEGHEADER ( sh.flags ) );
 
 	if ( offset != image->len ) {
-		DBGC ( image, "NBI %p length wrong (file %d, metadata %d)\n",
+		DBGC ( image, "NBI %p length wrong (file %zd, metadata %zd)\n",
 		       image, image->len, offset );
 		return -ENOEXEC;
 	}

src/arch/i386/prefix/unnrv2b.S

  * NOTE: It would be possible to build a smaller version of the
  * decompression code for -DKEEP_IT_REAL by using
  *    #define REG(x) x
- *    #define MOVSB movsb
  * to use 16-bit registers where possible.  This would impose limits
  * that the compressed data size must be in the range [1,65533-%si]
  * and the uncompressed data size must be in the range [1,65536-%di]
  */
 
 #define REG(x) e ## x
-#define MOVSB addr32 movsb
+#define ADDR32 addr32
 
 	.code16
 	.globl	decompress16
  */
 
 #define REG(x) e ## x
+#define ADDR32
 	
 	.code32
 	.globl	decompress
 	jmp	dcl1_n2b
 	
 decompr_literals_n2b:
-	MOVSB
+	ADDR32 movsb
 decompr_loop_n2b:
 	addl	%ebx, %ebx
 	jnz	dcl2_n2b
 	sub	$3, %xAX
 	jb	decompr_ebpeax_n2b	/* if (m_off == 2) goto decompr_ebpeax_n2b ? */
 	shl	$8, %xAX	
-	movb	(%xSI), %al	/* m_off = (m_off - 3)*256 + src[ilen++] */
+	ADDR32 movb (%xSI), %al	/* m_off = (m_off - 3)*256 + src[ilen++] */
 	inc	%xSI
 	xor	$-1, %xAX
 	jz	decompr_end_n2b	/* if (m_off == 0xffffffff) goto decomp_end_n2b */
 	cmp	$-0xd00, %xBP
 	adc	$1, %xCX	/* m_len = m_len + 1 + (last_m_off > 0xd00) */
 	push	%xSI
-	lea	(%xBP,%xDI), %xSI	/* m_pos = dst + olen + -m_off  */
+	ADDR32 lea (%xBP,%xDI), %xSI	/* m_pos = dst + olen + -m_off  */
 	rep
-	es MOVSB		/* dst[olen++] = *m_pos++ while(m_len > 0) */
+	es ADDR32 movsb		/* dst[olen++] = *m_pos++ while(m_len > 0) */
 	pop	%xSI
 	jmp	decompr_loop_n2b
 
 	addl	%ebx, %ebx
 	jnz	1f
 getbit32:
-	movl	(%xSI), %ebx
+	ADDR32 movl (%xSI), %ebx
 	sub	$-4, %xSI	/* sets carry flag */
 	adcl	%ebx, %ebx
 1:

src/arch/i386/transitions/librm.S

 	movzwl	%sp, %edx
 	movl	%ebp, %eax
 	shll	$4, %eax
-	leal	(%eax,%edx), %esi
+	addr32 leal (%eax,%edx), %esi
 	subl	_virt_offset, %esi
 
 	/* Switch to protected mode */

src/crypto/asn1.c

 		len_len = 1;
 	}
 	if ( cursor->len < len_len ) {
-		DBGC ( cursor, "ASN1 %p bad length field length %d (max %d)\n",
-		       cursor, len_len, cursor->len );
+		DBGC ( cursor, "ASN1 %p bad length field length %d (max "
+		       "%zd)\n", cursor, len_len, cursor->len );
 		goto notfound;
 	}
 
 		cursor->len--;
 	}
 	if ( cursor->len < len ) {
-		DBGC ( cursor, "ASN1 %p bad length %d (max %d)\n",
+		DBGC ( cursor, "ASN1 %p bad length %d (max %zd)\n",
 		       cursor, len, cursor->len );
 		goto notfound;
 	}

src/crypto/chap.c

 	state_len = ( digest->ctxsize + digest->digestsize );
 	state = malloc ( state_len );
 	if ( ! state ) {
-		DBG ( "CHAP %p could not allocate %d bytes for state\n",
+		DBG ( "CHAP %p could not allocate %zd bytes for state\n",
 		      chap, state_len );
 		return -ENOMEM;
 	}

src/drivers/nvs/spi.c

 					     device->munge_address );
 	int rc;
 
-	DBG ( "SPI %p reading %d bytes from %#04x\n", device, len, address );
+	DBG ( "SPI %p reading %zd bytes from %#04x\n", device, len, address );
 	if ( ( rc = bus->rw ( bus, device, command, address,
 			      NULL, data, len ) ) != 0 ) {
 		DBG ( "SPI %p failed to read data from device\n", device );
 					     device->munge_address );
 	int rc;
 
-	DBG ( "SPI %p writing %d bytes to %#04x\n", device, len, address );
+	DBG ( "SPI %p writing %zd bytes to %#04x\n", device, len, address );
 
 	if ( ( rc = bus->rw ( bus, device, SPI_WREN, -1,
 			      NULL, NULL, 0 ) ) != 0 ) {

src/drivers/nvs/threewire.c

 
 	assert ( bus->mode == SPI_MODE_THREEWIRE );
 
-	DBG ( "3wire %p reading %d bytes at %04x\n", device, len, address );
+	DBG ( "3wire %p reading %zd bytes at %04x\n", device, len, address );
 
 	return bus->rw ( bus, device, THREEWIRE_READ, address,
 			 NULL, data, len );
 
 	assert ( bus->mode == SPI_MODE_THREEWIRE );
 
-	DBG ( "3wire %p writing %d bytes at %04x\n", device, len, address );
+	DBG ( "3wire %p writing %zd bytes at %04x\n", device, len, address );
 
 	/* Enable device for writing */
 	if ( ( rc = bus->rw ( bus, device, THREEWIRE_EWEN,

src/interface/pxe/pxe_undi.c

 	copy_from_real ( &tbd, undi_transmit->TBD.segment,
 			 undi_transmit->TBD.offset, sizeof ( tbd ) );
 	len = tbd.ImmedLength;
-	DBG ( " %zd", tbd.ImmedLength );
+	DBG ( " %d", tbd.ImmedLength );
 	for ( i = 0 ; i < tbd.DataBlkCount ; i++ ) {
 		datablk = &tbd.DataBlock[i];
 		len += datablk->TDDataLen;
-		DBG ( "+%zd", datablk->TDDataLen );
+		DBG ( "+%d", datablk->TDDataLen );
 	}
 
 	/* Allocate and fill I/O buffer */

src/net/udp/tftp.c

 	char *end = buf + len;
 	char *name;
 	char *value;
-	int rc;
+	int rc = 0;
 
 	/* Sanity check */
 	if ( len < sizeof ( *oack ) ) {
 		DBGC ( tftp, "TFTP %p received underlength OACK packet "
-		       "length %d\n", tftp, len );
+		       "length %zd\n", tftp, len );
 		rc = -EINVAL;
 		goto done;
 	}
 	/* Sanity check */
 	if ( iob_len ( iobuf ) < sizeof ( *data ) ) {
 		DBGC ( tftp, "TFTP %p received underlength DATA packet "
-		       "length %d\n", tftp, iob_len ( iobuf ) );
+		       "length %zd\n", tftp, iob_len ( iobuf ) );
 		rc = -EINVAL;
 		goto done;
 	}
 	data_len = iob_len ( iobuf );
 	if ( data_len > tftp->blksize ) {
 		DBGC ( tftp, "TFTP %p received overlength DATA packet "
-		       "length %d\n", tftp, data_len );
+		       "length %zd\n", tftp, data_len );
 		rc = -EINVAL;
 		goto done;
 	}
 	/* Sanity check */
 	if ( len < sizeof ( *error ) ) {
 		DBGC ( tftp, "TFTP %p received underlength ERROR packet "
-		       "length %d\n", tftp, len );
+		       "length %zd\n", tftp, len );
 		return -EINVAL;
 	}
 
 	
 	/* Sanity checks */
 	if ( len < sizeof ( *common ) ) {
-		DBGC ( tftp, "TFTP %p received underlength packet length %d\n",
-		       tftp, len );
+		DBGC ( tftp, "TFTP %p received underlength packet length "
+		       "%zd\n", tftp, len );
 		goto done;
 	}
 	if ( ! meta ) {