optimize porting for M16C

void rt_hw_context_switch(rt_uint32_t from, rt_uint32_t to);

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1688 bbd45198-f89e-11dd-88c7-29a3b14d5316

2 files changed, 81 insertions, 93 deletions

diff --git a/libcpu/m16c/m16c62p/context_iar.S b/libcpu/m16c/m16c62p/context_iar.S
index 29c8656ba7..f326817ffb 100644
--- a/libcpu/m16c/m16c62p/context_iar.S
+++ b/libcpu/m16c/m16c62p/context_iar.S
@@ -15,76 +15,70 @@
  *

  * For       : Renesas M16C

  * Toolchain : IAR's EW for M16C v3.401

-*/

+ */

 

-    RSEG        CSTACK

+    RSEG    CSTACK

 

-    RSEG        ISTACK

+    RSEG    ISTACK

 

-    RSEG        CODE(1)

+    RSEG    CODE(1)

 

-    EXTERN    rt_thread_switch_interrput_flag

-    EXTERN    rt_interrupt_from_thread

-    EXTERN    rt_interrupt_to_thread

+    EXTERN  rt_thread_switch_interrput_flag

+    EXTERN  rt_interrupt_from_thread

+    EXTERN  rt_interrupt_to_thread

 

-    PUBLIC    rt_hw_interrupt_disable

-    PUBLIC    rt_hw_interrupt_enable    

-    PUBLIC    rt_hw_context_switch_to

-    PUBLIC    rt_hw_context_switch

-    PUBLIC    rt_hw_context_switch_interrupt

-    PUBLIC    os_context_switch

+    PUBLIC  rt_hw_interrupt_disable

+    PUBLIC  rt_hw_interrupt_enable

+    PUBLIC  rt_hw_context_switch_to

+    PUBLIC  rt_hw_context_switch

+    PUBLIC  rt_hw_context_switch_interrupt

+    PUBLIC  os_context_switch

 

-rt_hw_interrupt_disable

-    STC      FLG, R0    ;fify 20100419

-    FCLR     I

+rt_hw_interrupt_disable:

+    STC     FLG, R0    ;fify 20100419

+    FCLR    I

     RTS

 

-rt_hw_interrupt_enable

-    LDC      R0, FLG    ;fify 20100419

+rt_hw_interrupt_enable:

+    LDC     R0, FLG    ;fify 20100419

     RTS

     

     .EVEN

 os_context_switch:

-    PUSHM    R0,R1,R2,R3,A0,A1,SB,FB

-    CMP.W    #0,rt_thread_switch_interrput_flag

-    JEQ      exit

-    MOV.W    #0, rt_thread_switch_interrput_flag

-    MOV.W    rt_interrupt_from_thread, A0

-    STC      ISP, [A0]    

-    MOV.W    rt_interrupt_to_thread, A0

-    LDC      [A0], ISP

-exit

-    POPM     R0,R1,R2,R3,A0,A1,SB,FB             ; Restore registers from the new task's stack

-    REIT                                         ; Return from interrup    

+    PUSHM   R0,R1,R2,R3,A0,A1,SB,FB

+    

+    MOV.W   rt_interrupt_from_thread, A0

+    STC     ISP, [A0]

+    MOV.W   rt_interrupt_to_thread, A0

+    LDC     [A0], ISP

+

+    POPM    R0,R1,R2,R3,A0,A1,SB,FB             ; Restore registers from the new task's stack

+    REIT                                        ; Return from interrup    

     

 /*

  * void rt_hw_context_switch_to(rt_uint32 to);

  * r0 --> to

  * this fucntion is used to perform the first thread switch

  */

-rt_hw_context_switch_to

-    MOV.W    R0, A0

-    LDC      [A0], ISP

-    POPM     R0,R1,R2,R3,A0,A1,SB,FB

+rt_hw_context_switch_to:

+    MOV.W   R0, A0

+    LDC     [A0], ISP

+    POPM    R0,R1,R2,R3,A0,A1,SB,FB

     REIT

 

-rt_hw_context_switch

-    CMP.W    #1,rt_thread_switch_interrput_flag

-    JEQ      jump1

-    MOV.W    #1,rt_thread_switch_interrput_flag

-    MOV.W    R0, rt_interrupt_from_thread

-jump1

-    MOV.W    R1, rt_interrupt_to_thread

-    INT      #0

+rt_hw_context_switch:

+    MOV.W   R0, rt_interrupt_from_thread

+    MOV.W   R1, rt_interrupt_to_thread

+    INT     #0                                   ;software interrupt 0

     RTS

   

-rt_hw_context_switch_interrupt

-    CMP.W    #1,rt_thread_switch_interrput_flag

-    JEQ      jump

-    MOV.W    #1,rt_thread_switch_interrput_flag

-    MOV.W    R0, rt_interrupt_from_thread

+rt_hw_context_switch_interrupt:

+    CMP.W   #1, rt_thread_switch_interrput_flag

+    JEQ     jump

+    MOV.W   #1, rt_thread_switch_interrput_flag

+    MOV.W   R0, rt_interrupt_from_thread

 jump

-    MOV.W    R1, rt_interrupt_to_thread

+    MOV.W   R1, rt_interrupt_to_thread

     RTS

 

     END

diff --git a/libcpu/m16c/m16c62p/context_iar.asm b/libcpu/m16c/m16c62p/context_iar.asm
index 52dea18cae..f326817ffb 100644
--- a/libcpu/m16c/m16c62p/context_iar.asm
+++ b/libcpu/m16c/m16c62p/context_iar.asm
@@ -17,74 +17,68 @@
  * Toolchain : IAR's EW for M16C v3.401

  */

 

-    RSEG        CSTACK

+    RSEG    CSTACK

 

-    RSEG        ISTACK

+    RSEG    ISTACK

 

-    RSEG        CODE(1)

+    RSEG    CODE(1)

 

-    EXTERN    rt_thread_switch_interrput_flag

-    EXTERN    rt_interrupt_from_thread

-    EXTERN    rt_interrupt_to_thread

+    EXTERN  rt_thread_switch_interrput_flag

+    EXTERN  rt_interrupt_from_thread

+    EXTERN  rt_interrupt_to_thread

 

-    PUBLIC    rt_hw_interrupt_disable

-    PUBLIC    rt_hw_interrupt_enable    

-    PUBLIC    rt_hw_context_switch_to

-    PUBLIC    rt_hw_context_switch

-    PUBLIC    rt_hw_context_switch_interrupt

-    PUBLIC    os_context_switch

+    PUBLIC  rt_hw_interrupt_disable

+    PUBLIC  rt_hw_interrupt_enable

+    PUBLIC  rt_hw_context_switch_to

+    PUBLIC  rt_hw_context_switch

+    PUBLIC  rt_hw_context_switch_interrupt

+    PUBLIC  os_context_switch

 

-rt_hw_interrupt_disable

-    STC      FLG, R0    ;fify 20100419

-    FCLR     I

+rt_hw_interrupt_disable:

+    STC     FLG, R0    ;fify 20100419

+    FCLR    I

     RTS

 

-rt_hw_interrupt_enable

-    LDC      R0, FLG    ;fify 20100419

+rt_hw_interrupt_enable:

+    LDC     R0, FLG    ;fify 20100419

     RTS

     

     .EVEN

 os_context_switch:

-    PUSHM    R0,R1,R2,R3,A0,A1,SB,FB

-    CMP.W    #0,rt_thread_switch_interrput_flag

-    JEQ      exit

-    MOV.W    #0, rt_thread_switch_interrput_flag

-    MOV.W    rt_interrupt_from_thread, A0

-    STC      ISP, [A0]    

-    MOV.W    rt_interrupt_to_thread, A0

-    LDC      [A0], ISP

-exit

-    POPM     R0,R1,R2,R3,A0,A1,SB,FB             ; Restore registers from the new task's stack

-    REIT                                         ; Return from interrup    

+    PUSHM   R0,R1,R2,R3,A0,A1,SB,FB

+    

+    MOV.W   rt_interrupt_from_thread, A0

+    STC     ISP, [A0]

+    MOV.W   rt_interrupt_to_thread, A0

+    LDC     [A0], ISP

+

+    POPM    R0,R1,R2,R3,A0,A1,SB,FB             ; Restore registers from the new task's stack

+    REIT                                        ; Return from interrup    

     

 /*

  * void rt_hw_context_switch_to(rt_uint32 to);

  * r0 --> to

  * this fucntion is used to perform the first thread switch

  */

-rt_hw_context_switch_to

-    MOV.W    R0, A0

-    LDC      [A0], ISP

-    POPM     R0,R1,R2,R3,A0,A1,SB,FB

+rt_hw_context_switch_to:

+    MOV.W   R0, A0

+    LDC     [A0], ISP

+    POPM    R0,R1,R2,R3,A0,A1,SB,FB

     REIT

 

-rt_hw_context_switch

-    CMP.W    #1,rt_thread_switch_interrput_flag

-    JEQ      jump1

-    MOV.W    #1,rt_thread_switch_interrput_flag

-    MOV.W    R0, rt_interrupt_from_thread

-jump1

-    MOV.W    R1, rt_interrupt_to_thread

-    INT      #0

+rt_hw_context_switch:

+    MOV.W   R0, rt_interrupt_from_thread

+    MOV.W   R1, rt_interrupt_to_thread

+    INT     #0                                   ;software interrupt 0

     RTS

   

-rt_hw_context_switch_interrupt

-    CMP.W    #1,rt_thread_switch_interrput_flag

-    JEQ      jump

-    MOV.W    #1,rt_thread_switch_interrput_flag

-    MOV.W    R0, rt_interrupt_from_thread

+rt_hw_context_switch_interrupt:

+    CMP.W   #1, rt_thread_switch_interrput_flag

+    JEQ     jump

+    MOV.W   #1, rt_thread_switch_interrput_flag

+    MOV.W   R0, rt_interrupt_from_thread

 jump

-    MOV.W    R1, rt_interrupt_to_thread

+    MOV.W   R1, rt_interrupt_to_thread

     RTS

 

     END