From 608d4b2c444515784a0ee54e018bb8a68456eb4a Mon Sep 17 00:00:00 2001
From: Yinghai Lu <yinghailu@gmail.com>
Date: Thu, 4 May 2006 00:47:15 +0000
Subject: merge zrom to rom_stream and print olen ilen

git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2292 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
---
 src/lib/nrv2b.c | 34 +++++++++++++++++++++++++++++-----
 1 file changed, 29 insertions(+), 5 deletions(-)

(limited to 'src/lib')

diff --git a/src/lib/nrv2b.c b/src/lib/nrv2b.c
index f912347e3a..e9d6ebf8b0 100644
--- a/src/lib/nrv2b.c
+++ b/src/lib/nrv2b.c
@@ -1,16 +1,35 @@
-#include <stdlib.h>
-#include <stddef.h>
-
 // This GETBIT is supposed to work on little endian 
 // 32bit systems. The algorithm will definitely need
 // some fixing on other systems, but it might not be
 // a problem since the nrv2b binary behaves the same..
 
-#define GETBIT(bb, src, ilen) \
+#ifndef ENDIAN
+#define ENDIAN   0
+#endif
+#ifndef BITSIZE
+#define BITSIZE 32
+#endif
+
+#define GETBIT_8(bb, src, ilen) \
+    (((bb = bb & 0x7f ? bb*2 : ((unsigned)src[ilen++]*2+1)) >> 8) & 1)
+
+#define GETBIT_LE16(bb, src, ilen) \
+    (bb*=2,bb&0xffff ? (bb>>16)&1 : (ilen+=2,((bb=(src[ilen-2]+src[ilen-1]*256u)*2+1)>>16)&1))
+#define GETBIT_LE32(bb, src, ilen) \
     (bc > 0 ? ((bb>>--bc)&1) : (bc=31,\
     bb=*(const uint32_t *)((src)+ilen),ilen+=4,(bb>>31)&1))
 
-static void unrv2b(uint8_t * src, uint8_t * dst)
+#if ENDIAN == 0 && BITSIZE == 8
+#define GETBIT(bb, src, ilen) GETBIT_8(bb, src, ilen)
+#endif
+#if ENDIAN == 0 && BITSIZE == 16
+#define GETBIT(bb, src, ilen) GETBIT_LE16(bb, src, ilen)
+#endif
+#if ENDIAN == 0 && BITSIZE == 32
+#define GETBIT(bb, src, ilen) GETBIT_LE32(bb, src, ilen)
+#endif
+
+static unsigned long unrv2b(uint8_t * src, uint8_t * dst, unsigned long *ilen_p)
 {
 	unsigned long ilen = 0, olen = 0, last_m_off = 1;
 	uint32_t bb = 0;
@@ -20,6 +39,7 @@ static void unrv2b(uint8_t * src, uint8_t * dst)
 	// skip length
 	src += 4;
 
+	/* FIXME: check olen with len on first 4 bytes */	
 	for (;;) {
 		unsigned int m_off, m_len;
 		while (GETBIT(bb, src, ilen)) {
@@ -57,5 +77,9 @@ static void unrv2b(uint8_t * src, uint8_t * dst)
 		} while (--m_len > 0);
 	}
 
+	*ilen_p = ilen;
+
+	return olen;
+
 }
 
-- 
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