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Removed unused function from IAR CM4F port.c.

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Modified the stack alignment when a task first starts in the IAR CM4F port.
This commit is contained in:
Richard Barry 2012-04-16 17:04:42 +00:00
parent 6360632cca
commit 7a0996f246
3 changed files with 9 additions and 12 deletions
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4
Source/portable/IAR/ARM_CM4F/port.c
View file

@ -119,7 +119,7 @@ portSTACK_TYPE *pxPortInitialiseStack( portSTACK_TYPE *pxTopOfStack, pdTASK_CODE
/* Offset added to account for the way the MCU uses the stack on entry/exit
of interrupts, and to ensure alignment. */
pxTopOfStack -= 2;
pxTopOfStack--;
*pxTopOfStack = portINITIAL_XPSR; /* xPSR */
pxTopOfStack--;
@ -131,7 +131,7 @@ portSTACK_TYPE *pxPortInitialiseStack( portSTACK_TYPE *pxTopOfStack, pdTASK_CODE
pxTopOfStack -= 5; /* R12, R3, R2 and R1. */
*pxTopOfStack = ( portSTACK_TYPE ) pvParameters; /* R0 */
/* A save method is being used that requiers each task to maintain its
/* A save method is being used that requires each task to maintain its
own exec return value. */
pxTopOfStack--;
*pxTopOfStack = portINITIAL_EXEC_RETURN;

13
Source/portable/IAR/ARM_CM4F/portasm.s
View file

@ -56,11 +56,9 @@
RSEG CODE:CODE(2)
thumb
EXTERN vPortYieldFromISR
EXTERN pxCurrentTCB
EXTERN vTaskSwitchContext
PUBLIC vSetMSP
PUBLIC xPortPendSVHandler
PUBLIC vPortSetInterruptMask
PUBLIC vPortClearInterruptMask
@ -68,12 +66,7 @@
PUBLIC vPortStartFirstTask
PUBLIC vPortEnableVFP
/*-----------------------------------------------------------*/
vSetMSP
msr msp, r0
bx lr
/*-----------------------------------------------------------*/
xPortPendSVHandler:
@ -137,7 +130,7 @@ vPortClearInterruptMask:
/*-----------------------------------------------------------*/
vPortSVCHandler;
vPortSVCHandler:
/* Get the location of the current TCB. */
ldr r3, =pxCurrentTCB
ldr r1, [r3]
@ -151,7 +144,7 @@ vPortSVCHandler;
/*-----------------------------------------------------------*/
vPortStartFirstTask
vPortStartFirstTask:
/* Use the NVIC offset register to locate the stack. */
ldr r0, =0xE000ED08
ldr r0, [r0]
@ -164,7 +157,7 @@ vPortStartFirstTask
/*-----------------------------------------------------------*/
vPortEnableVFP
vPortEnableVFP:
/* The FPU enable bits are in the CPACR. */
ldr.w r0, =0xE000ED88
ldr r1, [r0]

4
Source/portable/IAR/ARM_CM4F/portmacro.h
View file

@ -117,6 +117,10 @@ extern void vPortClearInterruptMask( void );
#define portSET_INTERRUPT_MASK_FROM_ISR() 0;vPortSetInterruptMask()
#define portCLEAR_INTERRUPT_MASK_FROM_ISR(x) vPortClearInterruptMask();(void)x
/* There are an uneven number of items on the initial stack, so
portALIGNMENT_ASSERT_pxCurrentTCB() will trigger false positive asserts. */
#define portALIGNMENT_ASSERT_pxCurrentTCB ( void )
/*-----------------------------------------------------------*/
/* Task function macros as described on the FreeRTOS.org WEB site. */