修改bsp tms320c6678工程，并测试

bsp/ti-tms320c6678/.project

 <?xml version="1.0" encoding="UTF-8"?>
 <projectDescription>
-	<name>ti-c6678</name>
+	<name>ti-tms320c6678</name>
 	<comment></comment>
 	<projects>
 	</projects>
@@ -25,130 +25,130 @@
 		<nature>org.eclipse.cdt.managedbuilder.core.ScannerConfigNature</nature>
 	</natures>
 	<linkedResources>
-		<link>
-			<name>SConscript</name>
-			<type>1</type>
-			<locationURI>PARENT-2-PROJECT_LOC/src/SConscript</locationURI>
-		</link>
 		<link>
 			<name>clock.c</name>
 			<type>1</type>
-			<locationURI>PARENT-2-PROJECT_LOC/src/clock.c</locationURI>
+			<locationURI>PARENT-2-PROJECT_LOC/git-source/rt-thread/src/clock.c</locationURI>
 		</link>
 		<link>
 			<name>components.c</name>
 			<type>1</type>
-			<locationURI>PARENT-2-PROJECT_LOC/src/components.c</locationURI>
+			<locationURI>PARENT-2-PROJECT_LOC/git-source/rt-thread/src/components.c</locationURI>
 		</link>
 		<link>
 			<name>context.asm</name>
 			<type>1</type>
-			<locationURI>PARENT-2-PROJECT_LOC/libcpu/ti-dsp/c6x/context.asm</locationURI>
+			<locationURI>PARENT-2-PROJECT_LOC/git-source/rt-thread/libcpu/ti-dsp/c6x/context.asm</locationURI>
+		</link>
+		<link>
+			<name>contextinc.asm</name>
+			<type>1</type>
+			<locationURI>PARENT-2-PROJECT_LOC/git-source/rt-thread/libcpu/ti-dsp/c6x/contextinc.asm</locationURI>
 		</link>
 		<link>
 			<name>cpu.c</name>
 			<type>1</type>
-			<locationURI>PARENT-2-PROJECT_LOC/src/cpu.c</locationURI>
+			<locationURI>PARENT-2-PROJECT_LOC/git-source/rt-thread/src/cpu.c</locationURI>
 		</link>
 		<link>
 			<name>cpuport.c</name>
 			<type>1</type>
-			<locationURI>PARENT-2-PROJECT_LOC/libcpu/ti-dsp/c6x/cpuport.c</locationURI>
+			<locationURI>PARENT-2-PROJECT_LOC/git-source/rt-thread/libcpu/ti-dsp/c6x/cpuport.c</locationURI>
 		</link>
 		<link>
 			<name>device.c</name>
 			<type>1</type>
-			<locationURI>PARENT-2-PROJECT_LOC/src/device.c</locationURI>
+			<locationURI>PARENT-2-PROJECT_LOC/git-source/rt-thread/src/device.c</locationURI>
 		</link>
 		<link>
 			<name>idle.c</name>
 			<type>1</type>
-			<locationURI>PARENT-2-PROJECT_LOC/src/idle.c</locationURI>
+			<locationURI>PARENT-2-PROJECT_LOC/git-source/rt-thread/src/idle.c</locationURI>
 		</link>
 		<link>
-			<name>inct.asm</name>
+			<name>interrupt.c</name>
 			<type>1</type>
-			<locationURI>PARENT-2-PROJECT_LOC/libcpu/ti-dsp/c6x/inct.asm</locationURI>
+			<locationURI>PARENT-2-PROJECT_LOC/git-source/rt-thread/libcpu/ti-dsp/c6x/interrupt.c</locationURI>
 		</link>
 		<link>
-			<name>interrupt.c</name>
+			<name>intexc.asm</name>
 			<type>1</type>
-			<locationURI>PARENT-2-PROJECT_LOC/libcpu/ti-dsp/c6x/interrupt.c</locationURI>
+			<locationURI>PARENT-2-PROJECT_LOC/git-source/rt-thread/libcpu/ti-dsp/c6x/intexc.asm</locationURI>
 		</link>
 		<link>
 			<name>ipc.c</name>
 			<type>1</type>
-			<locationURI>PARENT-2-PROJECT_LOC/src/ipc.c</locationURI>
+			<locationURI>PARENT-2-PROJECT_LOC/git-source/rt-thread/src/ipc.c</locationURI>
 		</link>
 		<link>
 			<name>irq.c</name>
 			<type>1</type>
-			<locationURI>PARENT-2-PROJECT_LOC/src/irq.c</locationURI>
+			<locationURI>PARENT-2-PROJECT_LOC/git-source/rt-thread/src/irq.c</locationURI>
 		</link>
 		<link>
 			<name>kservice.c</name>
 			<type>1</type>
-			<locationURI>PARENT-2-PROJECT_LOC/src/kservice.c</locationURI>
+			<locationURI>PARENT-2-PROJECT_LOC/git-source/rt-thread/src/kservice.c</locationURI>
 		</link>
 		<link>
 			<name>mem.c</name>
 			<type>1</type>
-			<locationURI>PARENT-2-PROJECT_LOC/src/mem.c</locationURI>
+			<locationURI>PARENT-2-PROJECT_LOC/git-source/rt-thread/src/mem.c</locationURI>
 		</link>
 		<link>
 			<name>memheap.c</name>
 			<type>1</type>
-			<locationURI>PARENT-2-PROJECT_LOC/src/memheap.c</locationURI>
+			<locationURI>PARENT-2-PROJECT_LOC/git-source/rt-thread/src/memheap.c</locationURI>
 		</link>
 		<link>
 			<name>mempool.c</name>
 			<type>1</type>
-			<locationURI>PARENT-2-PROJECT_LOC/src/mempool.c</locationURI>
+			<locationURI>PARENT-2-PROJECT_LOC/git-source/rt-thread/src/mempool.c</locationURI>
 		</link>
 		<link>
 			<name>object.c</name>
 			<type>1</type>
-			<locationURI>PARENT-2-PROJECT_LOC/src/object.c</locationURI>
+			<locationURI>PARENT-2-PROJECT_LOC/git-source/rt-thread/src/object.c</locationURI>
 		</link>
 		<link>
 			<name>scheduler.c</name>
 			<type>1</type>
-			<locationURI>PARENT-2-PROJECT_LOC/src/scheduler.c</locationURI>
+			<locationURI>PARENT-2-PROJECT_LOC/git-source/rt-thread/src/scheduler.c</locationURI>
 		</link>
 		<link>
 			<name>signal.c</name>
 			<type>1</type>
-			<locationURI>PARENT-2-PROJECT_LOC/src/signal.c</locationURI>
+			<locationURI>PARENT-2-PROJECT_LOC/git-source/rt-thread/src/signal.c</locationURI>
 		</link>
 		<link>
 			<name>slab.c</name>
 			<type>1</type>
-			<locationURI>PARENT-2-PROJECT_LOC/src/slab.c</locationURI>
+			<locationURI>PARENT-2-PROJECT_LOC/git-source/rt-thread/src/slab.c</locationURI>
 		</link>
 		<link>
-			<name>stack.asm</name>
+			<name>stack.c</name>
 			<type>1</type>
-			<locationURI>PARENT-2-PROJECT_LOC/libcpu/ti-dsp/c6x/stack.asm</locationURI>
+			<locationURI>PARENT-2-PROJECT_LOC/git-source/rt-thread/libcpu/ti-dsp/c6x/stack.c</locationURI>
 		</link>
 		<link>
 			<name>thread.c</name>
 			<type>1</type>
-			<locationURI>PARENT-2-PROJECT_LOC/src/thread.c</locationURI>
+			<locationURI>PARENT-2-PROJECT_LOC/git-source/rt-thread/src/thread.c</locationURI>
 		</link>
 		<link>
 			<name>timer.c</name>
 			<type>1</type>
-			<locationURI>PARENT-2-PROJECT_LOC/src/timer.c</locationURI>
+			<locationURI>PARENT-2-PROJECT_LOC/git-source/rt-thread/src/timer.c</locationURI>
 		</link>
 		<link>
 			<name>trap.c</name>
 			<type>1</type>
-			<locationURI>PARENT-2-PROJECT_LOC/libcpu/ti-dsp/c6x/trap.c</locationURI>
+			<locationURI>PARENT-2-PROJECT_LOC/git-source/rt-thread/libcpu/ti-dsp/c6x/trap.c</locationURI>
 		</link>
 		<link>
 			<name>vector.asm</name>
 			<type>1</type>
-			<locationURI>PARENT-2-PROJECT_LOC/libcpu/ti-dsp/c6x/vector.asm</locationURI>
+			<locationURI>PARENT-2-PROJECT_LOC/git-source/rt-thread/libcpu/ti-dsp/c6x/vector.asm</locationURI>
 		</link>
 	</linkedResources>
 </projectDescription>

bsp/ti-tms320c6678/.settings/org.eclipse.core.resources.prefs

-eclipse.preferences.version=1
-encoding//Debug/applications/subdir_rules.mk=UTF-8
-encoding//Debug/applications/subdir_vars.mk=UTF-8
-encoding//Debug/driver/subdir_rules.mk=UTF-8
-encoding//Debug/driver/subdir_vars.mk=UTF-8
-encoding//Debug/makefile=UTF-8
-encoding//Debug/objects.mk=UTF-8
-encoding//Debug/sources.mk=UTF-8
-encoding//Debug/subdir_rules.mk=UTF-8
-encoding//Debug/subdir_vars.mk=UTF-8

bsp/ti-tms320c6678/applications/main.c

@@ -16,7 +16,6 @@
 void rt_init_thread_entry(void *parameter)
 {
     rt_kprintf("hello rt-thread\n");
-    return 0;
 }
 
 int rt_application_init(void)

bsp/ti-tms320c6678/readme.txt

-	本工程使用TI公司编译器CCS5.5进行编译，工程中使用到了TI官方提供的K1_STK_v1.1，
-如有需要的请到TI官方论坛自行下载，并将K1_STK_v1.1中的KeyStone_common.c和KeyStone_common.h文件
-放置到本工程的driver目录下。
\ No newline at end of file
+	本工程使用TI公司编译器CCS5.5进行编译，需要安装TI提供的CSL库pdk_C6678_1_1_2_6，
+我的安装路径为C盘。
+"C:\ti\pdk_C6678_1_1_2_6\packages"
+"C:\ti\pdk_C6678_1_1_2_6\packages\ti\csl"
\ No newline at end of file

libcpu/ti-dsp/c6x/context.asm

@@ -18,11 +18,6 @@
 ;-----------------------------------------------------------
 DP	.set	B14
 SP	.set	B15
-
-;-----------------------------------------------------------
-;                      extern variable
-;-----------------------------------------------------------
-	.ref rt_system_stack_top
 ;
 ;-----------------------------------------------------------
 ;
@@ -165,8 +160,7 @@ rt_hw_context_switch_to:
 	LDDW	.D2T2	*++SP[1],B13:B12    ; get PC (B13) and CSR (B12)
 	NOP	2
 	MV	B8,B0
- [B0]   B	_rt_thread_interrupt_stack
- 	NOP	5
+ [B0]  BNOP	_rt_thread_interrupt_stack, 5
 ;
 ; this maybe do better
 ;
@@ -275,7 +269,6 @@ rt_interrupt_context_restore:
 	NOP		4
 	CMPEQ	1,A1,A2
  [A2]  BNOP	 rt_preempt_context_restore,5
-	NOP		5
 	LDDW	.D2T2	*++SP[1],B9:B8      ; get TSR (B9)
 	LDDW	.D2T2	*++SP[1],B11:B10    ; get RILC (B11) and ILC (B10)
 	LDDW	.D2T2	*++SP[1],B13:B12    ; get PC (B13) and CSR (B12)

libcpu/ti-dsp/c6x/contextinc.asm

@@ -8,6 +8,11 @@
 ; 2021-11-16     Dystopia     the first version
 ;
 
+;-----------------------------------------------------------
+; 						extern variable
+;-----------------------------------------------------------
+	.ref rt_system_stack_top
+
 ;-----------------------------------------------------------
 ;                     macro definition
 ;-----------------------------------------------------------

libcpu/ti-dsp/c6x/interrupt.c

@@ -26,7 +26,7 @@ rt_uint32_t rt_thread_switch_interrupt_flag;
 void rt_hw_interrupt_init(void)
 {
     // initial system trap
-    rt_trap_init();
+    //rt_trap_init();
 
     /* init exceptions table */
     rt_memset(isr_table, 0x00, sizeof(isr_table));

libcpu/ti-dsp/c6x/intexc.asm

@@ -65,14 +65,6 @@ SP	.set	B15
 ;-----------------------------------------------------------
 ;
 
-;-----------------------------------------------------------
-;                     extern variable
-;-----------------------------------------------------------
-	.ref rt_system_stack_top
-;
-;-----------------------------------------------------------
-;
-
 ;-----------------------------------------------------------
 ;               interrupt macro definition
 ;-----------------------------------------------------------

libcpu/ti-dsp/c6x/stack.c

@@ -31,8 +31,8 @@ extern rt_uint32_t rt_hw_get_current_dp(void);
 rt_uint8_t *rt_hw_stack_init(void *tentry, void *parameter,
                              rt_uint8_t *stack_addr, void *texit)
 {
-    rt_hw_thread_stack_register *thread_context;
-    rt_uint32_t stk;
+    rt_hw_thread_stack_register *thread_context = RT_NULL;
+    rt_uint32_t stk = 0;
 
     stack_addr += sizeof(rt_uint32_t);
     stack_addr  = (rt_uint8_t *)RT_ALIGN_DOWN((rt_uint32_t)stack_addr, 8);

libcpu/ti-dsp/c6x/trap.h

@@ -90,8 +90,9 @@ extern int __ffs(int val);
 static inline int fls(int x)
 {
     if (!x)
+    {
         return 0;
-
+    }
     return 32 - __fls(x);
 }
 
@@ -107,8 +108,9 @@ static inline int fls(int x)
 static inline int ffs(int x)
 {
     if (!x)
+    {
         return 0;
-
+    }
     return __ffs(x) + 1;
 }