From d1bb7c61f4d46d07ae0ce4735c857b742974cafb Mon Sep 17 00:00:00 2001
From: 勤为本 <1207280597@qq.com>
Date: Thu, 20 Jul 2017 17:05:59 +0800
Subject: 将支持的中断个数从32个扩展到160个，至此可以支持所有中断
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---
 bsp/ls1cdev/libraries/ls1c_public.c | 38 +++++++++++++++++++++++++++++++++++++
 bsp/ls1cdev/libraries/ls1c_public.h |  6 ++++++
 bsp/ls1cdev/rtconfig.py             |  3 ++-
 3 files changed, 46 insertions(+), 1 deletion(-)

(limited to 'bsp/ls1cdev')

diff --git a/bsp/ls1cdev/libraries/ls1c_public.c b/bsp/ls1cdev/libraries/ls1c_public.c
index 652fd2e219..84518f0bd0 100644
--- a/bsp/ls1cdev/libraries/ls1c_public.c
+++ b/bsp/ls1cdev/libraries/ls1c_public.c
@@ -77,3 +77,41 @@ unsigned int reg_read_32(volatile unsigned int *addr)
 
 
 
+/**
+ * ffs - find first bit set
+ * @x: the word to search
+ *
+ * This is defined the same way as
+ * the libc and compiler builtin ffs routines, therefore
+ * differs in spirit from the above ffz (man ffs).
+ */
+int ls1c_ffs(int x)
+{
+	int r = 1;
+
+	if (!x)
+		return 0;
+	if (!(x & 0xffff)) {
+		x >>= 16;
+		r += 16;
+	}
+	if (!(x & 0xff)) {
+		x >>= 8;
+		r += 8;
+	}
+	if (!(x & 0xf)) {
+		x >>= 4;
+		r += 4;
+	}
+	if (!(x & 3)) {
+		x >>= 2;
+		r += 2;
+	}
+	if (!(x & 1)) {
+		x >>= 1;
+		r += 1;
+	}
+	return r;
+}
+
+
diff --git a/bsp/ls1cdev/libraries/ls1c_public.h b/bsp/ls1cdev/libraries/ls1c_public.h
index d3b410c421..3ecabeafaa 100644
--- a/bsp/ls1cdev/libraries/ls1c_public.h
+++ b/bsp/ls1cdev/libraries/ls1c_public.h
@@ -73,6 +73,12 @@ void reg_write_32(unsigned int data, volatile unsigned int *addr);
 unsigned int reg_read_32(volatile unsigned int *addr);
 
 
+/**
+ * ffs - find first bit set
+ * @x: the word to search
+ */
+int ls1c_ffs(int x);
+
 
 #endif
 
diff --git a/bsp/ls1cdev/rtconfig.py b/bsp/ls1cdev/rtconfig.py
index e4eb2f962a..c8da0ea477 100644
--- a/bsp/ls1cdev/rtconfig.py
+++ b/bsp/ls1cdev/rtconfig.py
@@ -12,7 +12,8 @@ if os.getenv('RTT_CC'):
 
 if  CROSS_TOOL == 'gcc':
 	PLATFORM    = 'gcc'
-	EXEC_PATH   = '/opt/opt/gcc-4.3-ls232/bin'
+#	EXEC_PATH   = '/opt/opt/gcc-4.3-ls232/bin'
+	EXEC_PATH   = r'D:\mgc\embedded\codebench\bin'
 else:
     print '================ERROR==========================='
     print 'Not support %s yet!' % CROSS_TOOL
-- 
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