Before changing headers to V6 and changing portLONG, portSHORt and portCHAR to their standard C types.

2026-01-19 00:00:39 -05:00 · 2009-10-05 08:33:08 +00:00 · 2009-10-05 08:33:08 +00:00 · 5c64e1fad9
commit 5c64e1fad9
parent 3dfbb349ca
4417 changed files with 1261274 additions and 0 deletions
--- a/20091005/Source/portable/IAR/ARM_CM3/portasm.s
+++ b/20091005/Source/portable/IAR/ARM_CM3/portasm.s
@ -0,0 +1,157 @@
+/*
+	FreeRTOS V5.4.2 - Copyright (C) 2009 Real Time Engineers Ltd.
+
+	This file is part of the FreeRTOS distribution.
+
+	FreeRTOS is free software; you can redistribute it and/or modify it	under 
+	the terms of the GNU General Public License (version 2) as published by the 
+	Free Software Foundation and modified by the FreeRTOS exception.
+	**NOTE** The exception to the GPL is included to allow you to distribute a
+	combined work that includes FreeRTOS without being obliged to provide the 
+	source code for proprietary components outside of the FreeRTOS kernel.  
+	Alternative commercial license and support terms are also available upon 
+	request.  See the licensing section of http://www.FreeRTOS.org for full 
+	license details.
+
+	FreeRTOS is distributed in the hope that it will be useful,	but WITHOUT
+	ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+	FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+	more details.
+
+	You should have received a copy of the GNU General Public License along
+	with FreeRTOS; if not, write to the Free Software Foundation, Inc., 59
+	Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+
+
+	***************************************************************************
+	*                                                                         *
+	* Looking for a quick start?  Then check out the FreeRTOS eBook!          *
+	* See http://www.FreeRTOS.org/Documentation for details                   *
+	*                                                                         *
+	***************************************************************************
+
+	1 tab == 4 spaces!
+
+	Please ensure to read the configuration and relevant port sections of the
+	online documentation.
+
+	http://www.FreeRTOS.org - Documentation, latest information, license and
+	contact details.
+
+	http://www.SafeRTOS.com - A version that is certified for use in safety
+	critical systems.
+
+	http://www.OpenRTOS.com - Commercial support, development, porting,
+	licensing and training services.
+*/
+
+/*
+	Change from V4.2.1:
+
+	+ Introduced usage of configKERNEL_INTERRUPT_PRIORITY macro to set the
+	  interrupt priority used by the kernel.
+*/
+
+#include <FreeRTOSConfig.h>
+
+/* For backward compatibility, ensure configKERNEL_INTERRUPT_PRIORITY is
+defined.  The value zero should also ensure backward compatibility.
+FreeRTOS.org versions prior to V4.3.0 did not include this definition. */
+#ifndef configKERNEL_INTERRUPT_PRIORITY
+	#define configKERNEL_INTERRUPT_PRIORITY 0
+#endif
+
+	
+	RSEG    CODE:CODE(2)
+	thumb
+
+	EXTERN vPortYieldFromISR
+	EXTERN pxCurrentTCB
+	EXTERN vTaskSwitchContext
+
+	PUBLIC vSetMSP
+	PUBLIC xPortPendSVHandler
+	PUBLIC vPortSetInterruptMask
+	PUBLIC vPortClearInterruptMask
+	PUBLIC vPortSVCHandler
+	PUBLIC vPortStartFirstTask
+
+
+/*-----------------------------------------------------------*/
+
+vSetMSP
+	msr msp, r0
+	bx lr
+	
+/*-----------------------------------------------------------*/
+
+xPortPendSVHandler:
+	mrs r0, psp						
+	ldr	r3, =pxCurrentTCB			/* Get the location of the current TCB. */
+	ldr	r2, [r3]						
+
+	stmdb r0!, {r4-r11}				/* Save the remaining registers. */
+	str r0, [r2]					/* Save the new top of stack into the first member of the TCB. */
+
+	stmdb sp!, {r3, r14}
+	mov r0, #configMAX_SYSCALL_INTERRUPT_PRIORITY
+	msr basepri, r0
+	bl vTaskSwitchContext			
+	mov r0, #0
+	msr basepri, r0
+	ldmia sp!, {r3, r14}
+
+	ldr r1, [r3]					
+	ldr r0, [r1]					/* The first item in pxCurrentTCB is the task top of stack. */
+	ldmia r0!, {r4-r11}				/* Pop the registers. */
+	msr psp, r0						
+	bx r14							
+
+
+/*-----------------------------------------------------------*/
+
+vPortSetInterruptMask:
+	push { r0 }
+	mov R0, #configMAX_SYSCALL_INTERRUPT_PRIORITY
+	msr BASEPRI, R0
+	pop { R0 }
+
+	bx r14
+	
+/*-----------------------------------------------------------*/
+
+vPortClearInterruptMask:
+	PUSH { r0 }
+	MOV R0, #0
+	MSR BASEPRI, R0
+	POP	 { R0 }
+
+	bx r14
+
+/*-----------------------------------------------------------*/
+
+vPortSVCHandler;
+	ldr	r3, =pxCurrentTCB
+	ldr r1, [r3]
+	ldr r0, [r1]
+	ldmia r0!, {r4-r11}
+	msr psp, r0
+	mov r0, #0
+	msr	basepri, r0
+	orr r14, r14, #13
+	bx r14
+
+/*-----------------------------------------------------------*/
+
+vPortStartFirstTask
+	/* Use the NVIC offset register to locate the stack. */
+	ldr r0, =0xE000ED08
+	ldr r0, [r0]
+	ldr r0, [r0]
+	/* Set the msp back to the start of the stack. */
+	msr msp, r0
+	/* Call SVC to start the first task. */
+	svc 0
+
+	END
+