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
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dzzxzz
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@ -15,55 +15,55 @@
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* Toolchain : IAR's EW for M16C v3.401
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* Toolchain : IAR's EW for M16C v3.401
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*/
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*/
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PUBLIC rt_hw_timer_handler
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PUBLIC rt_hw_timer_handler
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PUBLIC rt_hw_uart0_receive_handler
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PUBLIC rt_hw_uart0_receive_handler
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EXTERN rt_thread_switch_interrput_flag
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EXTERN rt_thread_switch_interrput_flag
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EXTERN rt_interrupt_from_thread
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EXTERN rt_interrupt_from_thread
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EXTERN rt_interrupt_to_thread
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EXTERN rt_interrupt_to_thread
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EXTERN rt_interrupt_enter
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EXTERN rt_interrupt_enter
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EXTERN rt_interrupt_leave
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EXTERN rt_interrupt_leave
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EXTERN rt_tick_increase
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EXTERN rt_tick_increase
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EXTERN u0rec_handler
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EXTERN u0rec_handler
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RSEG CSTACK
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RSEG CSTACK
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RSEG ISTACK
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RSEG ISTACK
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RSEG CODE:CODE:NOROOT(2)
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RSEG CODE:CODE:NOROOT(2)
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rt_hw_context_switch_interrupt_do
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rt_hw_context_switch_interrupt_do
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MOV.W #0, rt_thread_switch_interrput_flag
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MOV.W #0, rt_thread_switch_interrput_flag
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MOV.W rt_interrupt_from_thread, A0
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MOV.W rt_interrupt_from_thread, A0
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STC ISP, [A0]
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STC ISP, [A0]
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MOV.W rt_interrupt_to_thread, A0
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MOV.W rt_interrupt_to_thread, A0
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LDC [A0], ISP
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LDC [A0], ISP
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POPM R0,R1,R2,R3,A0,A1,SB,FB ; Restore all processor registers from the new task's stack
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POPM R0,R1,R2,R3,A0,A1,SB,FB ; Restore all processor registers from the new task's stack
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REIT
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REIT
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.EVEN
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.EVEN
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rt_hw_timer_handler:
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rt_hw_timer_handler:
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PUSHM R0,R1,R2,R3,A0,A1,SB,FB ; Save current task's registers
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PUSHM R0,R1,R2,R3,A0,A1,SB,FB ; Save current task's registers
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JSR rt_interrupt_enter
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JSR rt_interrupt_enter
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JSR rt_tick_increase
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JSR rt_tick_increase
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JSR rt_interrupt_leave
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JSR rt_interrupt_leave
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CMP.W #1,rt_thread_switch_interrput_flag
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CMP.W #1, rt_thread_switch_interrput_flag
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JEQ rt_hw_context_switch_interrupt_do
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JEQ rt_hw_context_switch_interrupt_do
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POPM R0,R1,R2,R3,A0,A1,SB,FB ; Restore current task's registers
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POPM R0,R1,R2,R3,A0,A1,SB,FB ; Restore current task's registers
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REIT ; Return from interrup
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REIT ; Return from interrup
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.EVEN
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.EVEN
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rt_hw_uart0_receive_handler:
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rt_hw_uart0_receive_handler:
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PUSHM R0,R1,R2,R3,A0,A1,SB,FB ; Save current task's registers
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PUSHM R0,R1,R2,R3,A0,A1,SB,FB ; Save current task's registers
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JSR rt_interrupt_enter
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JSR rt_interrupt_enter
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JSR u0rec_handler
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JSR u0rec_handler
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JSR rt_interrupt_leave
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JSR rt_interrupt_leave
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CMP.W #1, rt_thread_switch_interrput_flag
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CMP.W #1, rt_thread_switch_interrput_flag
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JEQ rt_hw_context_switch_interrupt_do
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JEQ rt_hw_context_switch_interrupt_do
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POPM R0,R1,R2,R3,A0,A1,SB,FB ; Restore current task's registers
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POPM R0,R1,R2,R3,A0,A1,SB,FB ; Restore current task's registers
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REIT ; Return from interrup
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REIT ; Return from interrup
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END
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END
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@ -15,76 +15,70 @@
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*
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*
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* For : Renesas M16C
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* For : Renesas M16C
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* Toolchain : IAR's EW for M16C v3.401
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* Toolchain : IAR's EW for M16C v3.401
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*/
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*/
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RSEG CSTACK
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RSEG CSTACK
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RSEG ISTACK
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RSEG ISTACK
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RSEG CODE(1)
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RSEG CODE(1)
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EXTERN rt_thread_switch_interrput_flag
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EXTERN rt_thread_switch_interrput_flag
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EXTERN rt_interrupt_from_thread
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EXTERN rt_interrupt_from_thread
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EXTERN rt_interrupt_to_thread
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EXTERN rt_interrupt_to_thread
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PUBLIC rt_hw_interrupt_disable
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PUBLIC rt_hw_interrupt_disable
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PUBLIC rt_hw_interrupt_enable
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PUBLIC rt_hw_interrupt_enable
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PUBLIC rt_hw_context_switch_to
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PUBLIC rt_hw_context_switch_to
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PUBLIC rt_hw_context_switch
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PUBLIC rt_hw_context_switch
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PUBLIC rt_hw_context_switch_interrupt
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PUBLIC rt_hw_context_switch_interrupt
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PUBLIC os_context_switch
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PUBLIC os_context_switch
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rt_hw_interrupt_disable
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rt_hw_interrupt_disable:
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STC FLG, R0 ;fify 20100419
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STC FLG, R0 ;fify 20100419
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FCLR I
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FCLR I
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RTS
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RTS
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rt_hw_interrupt_enable
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rt_hw_interrupt_enable:
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LDC R0, FLG ;fify 20100419
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LDC R0, FLG ;fify 20100419
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RTS
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RTS
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.EVEN
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.EVEN
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os_context_switch:
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os_context_switch:
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PUSHM R0,R1,R2,R3,A0,A1,SB,FB
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PUSHM R0,R1,R2,R3,A0,A1,SB,FB
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CMP.W #0,rt_thread_switch_interrput_flag
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JEQ exit
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MOV.W rt_interrupt_from_thread, A0
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MOV.W #0, rt_thread_switch_interrput_flag
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STC ISP, [A0]
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MOV.W rt_interrupt_from_thread, A0
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MOV.W rt_interrupt_to_thread, A0
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STC ISP, [A0]
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LDC [A0], ISP
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MOV.W rt_interrupt_to_thread, A0
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LDC [A0], ISP
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POPM R0,R1,R2,R3,A0,A1,SB,FB ; Restore registers from the new task's stack
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exit
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REIT ; Return from interrup
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POPM R0,R1,R2,R3,A0,A1,SB,FB ; Restore registers from the new task's stack
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REIT ; Return from interrup
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/*
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/*
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* void rt_hw_context_switch_to(rt_uint32 to);
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* void rt_hw_context_switch_to(rt_uint32 to);
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* r0 --> to
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* r0 --> to
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* this fucntion is used to perform the first thread switch
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* this fucntion is used to perform the first thread switch
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*/
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*/
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rt_hw_context_switch_to
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rt_hw_context_switch_to:
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MOV.W R0, A0
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MOV.W R0, A0
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LDC [A0], ISP
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LDC [A0], ISP
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POPM R0,R1,R2,R3,A0,A1,SB,FB
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POPM R0,R1,R2,R3,A0,A1,SB,FB
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REIT
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REIT
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rt_hw_context_switch
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rt_hw_context_switch:
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CMP.W #1,rt_thread_switch_interrput_flag
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MOV.W R0, rt_interrupt_from_thread
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JEQ jump1
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MOV.W R1, rt_interrupt_to_thread
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MOV.W #1,rt_thread_switch_interrput_flag
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INT #0 ;software interrupt 0
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MOV.W R0, rt_interrupt_from_thread
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jump1
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MOV.W R1, rt_interrupt_to_thread
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INT #0
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RTS
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RTS
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rt_hw_context_switch_interrupt
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rt_hw_context_switch_interrupt:
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CMP.W #1,rt_thread_switch_interrput_flag
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CMP.W #1, rt_thread_switch_interrput_flag
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JEQ jump
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JEQ jump
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MOV.W #1,rt_thread_switch_interrput_flag
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MOV.W #1, rt_thread_switch_interrput_flag
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MOV.W R0, rt_interrupt_from_thread
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MOV.W R0, rt_interrupt_from_thread
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jump
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jump
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MOV.W R1, rt_interrupt_to_thread
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MOV.W R1, rt_interrupt_to_thread
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RTS
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RTS
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END
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END
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@ -17,74 +17,68 @@
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* Toolchain : IAR's EW for M16C v3.401
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* Toolchain : IAR's EW for M16C v3.401
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*/
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*/
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RSEG CSTACK
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RSEG CSTACK
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RSEG ISTACK
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RSEG ISTACK
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RSEG CODE(1)
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RSEG CODE(1)
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EXTERN rt_thread_switch_interrput_flag
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EXTERN rt_thread_switch_interrput_flag
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EXTERN rt_interrupt_from_thread
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EXTERN rt_interrupt_from_thread
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EXTERN rt_interrupt_to_thread
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EXTERN rt_interrupt_to_thread
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PUBLIC rt_hw_interrupt_disable
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PUBLIC rt_hw_interrupt_disable
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PUBLIC rt_hw_interrupt_enable
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PUBLIC rt_hw_interrupt_enable
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PUBLIC rt_hw_context_switch_to
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PUBLIC rt_hw_context_switch_to
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PUBLIC rt_hw_context_switch
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PUBLIC rt_hw_context_switch
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PUBLIC rt_hw_context_switch_interrupt
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PUBLIC rt_hw_context_switch_interrupt
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PUBLIC os_context_switch
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PUBLIC os_context_switch
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rt_hw_interrupt_disable
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rt_hw_interrupt_disable:
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STC FLG, R0 ;fify 20100419
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STC FLG, R0 ;fify 20100419
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FCLR I
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FCLR I
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RTS
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RTS
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rt_hw_interrupt_enable
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rt_hw_interrupt_enable:
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LDC R0, FLG ;fify 20100419
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LDC R0, FLG ;fify 20100419
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RTS
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RTS
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.EVEN
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.EVEN
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os_context_switch:
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os_context_switch:
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PUSHM R0,R1,R2,R3,A0,A1,SB,FB
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PUSHM R0,R1,R2,R3,A0,A1,SB,FB
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CMP.W #0,rt_thread_switch_interrput_flag
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JEQ exit
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MOV.W rt_interrupt_from_thread, A0
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MOV.W #0, rt_thread_switch_interrput_flag
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STC ISP, [A0]
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MOV.W rt_interrupt_from_thread, A0
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MOV.W rt_interrupt_to_thread, A0
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STC ISP, [A0]
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LDC [A0], ISP
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MOV.W rt_interrupt_to_thread, A0
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LDC [A0], ISP
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POPM R0,R1,R2,R3,A0,A1,SB,FB ; Restore registers from the new task's stack
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exit
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REIT ; Return from interrup
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POPM R0,R1,R2,R3,A0,A1,SB,FB ; Restore registers from the new task's stack
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REIT ; Return from interrup
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/*
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/*
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* void rt_hw_context_switch_to(rt_uint32 to);
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* void rt_hw_context_switch_to(rt_uint32 to);
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* r0 --> to
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* r0 --> to
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* this fucntion is used to perform the first thread switch
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* this fucntion is used to perform the first thread switch
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*/
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*/
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rt_hw_context_switch_to
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rt_hw_context_switch_to:
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MOV.W R0, A0
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MOV.W R0, A0
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LDC [A0], ISP
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LDC [A0], ISP
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POPM R0,R1,R2,R3,A0,A1,SB,FB
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POPM R0,R1,R2,R3,A0,A1,SB,FB
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REIT
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REIT
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rt_hw_context_switch
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rt_hw_context_switch:
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CMP.W #1,rt_thread_switch_interrput_flag
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MOV.W R0, rt_interrupt_from_thread
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JEQ jump1
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MOV.W R1, rt_interrupt_to_thread
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MOV.W #1,rt_thread_switch_interrput_flag
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INT #0 ;software interrupt 0
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MOV.W R0, rt_interrupt_from_thread
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jump1
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MOV.W R1, rt_interrupt_to_thread
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INT #0
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RTS
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RTS
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rt_hw_context_switch_interrupt
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rt_hw_context_switch_interrupt:
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CMP.W #1,rt_thread_switch_interrput_flag
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CMP.W #1, rt_thread_switch_interrput_flag
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JEQ jump
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JEQ jump
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MOV.W #1,rt_thread_switch_interrput_flag
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MOV.W #1, rt_thread_switch_interrput_flag
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MOV.W R0, rt_interrupt_from_thread
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MOV.W R0, rt_interrupt_from_thread
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jump
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jump
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MOV.W R1, rt_interrupt_to_thread
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MOV.W R1, rt_interrupt_to_thread
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RTS
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RTS
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END
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END
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