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Basic cooperative reg test tasks working.

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This commit is contained in:
Richard Barry 2008-02-25 11:18:23 +00:00
parent 3c2306ed72
commit 9a9cd41098
3 changed files with 18 additions and 9 deletions
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4
Source/portable/GCC/PPC405/port.c
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@ -162,9 +162,9 @@ portSTACK_TYPE *pxPortInitialiseStack( portSTACK_TYPE *pxTopOfStack, pdTASK_CODE
pxTopOfStack--; pxTopOfStack--;
*pxTopOfStack = portINITIAL_MSR;/* SRR1. */ *pxTopOfStack = portINITIAL_MSR;/* SRR1. */
pxTopOfStack--; pxTopOfStack--;
*pxTopOfStack = 0x00000000UL;/* Next LR. */ *pxTopOfStack = ( portSTACK_TYPE ) vStartFirstTask;/* Next LR. */
pxTopOfStack--; pxTopOfStack--;
*pxTopOfStack = portINITIAL_MSR;/* Backchain. */ *pxTopOfStack = 0x00000000UL;;/* Backchain. */
// pxTopOfStack--; // pxTopOfStack--;
return pxTopOfStack; return pxTopOfStack;

21
Source/portable/GCC/PPC405/portasm.s
View file

@ -11,7 +11,7 @@
.set portGPR_OFFSET, 32 .set portGPR_OFFSET, 32
.set portCR_OFFSET, 28 .set portCR_OFFSET, 28
.set portXER_OFFSET, 24 .set portXER_OFFSET, 24
.set portLR_OFFSET, 20 .set portLR_OFFSET, 16
.set portCTR_OFFSET, 16 .set portCTR_OFFSET, 16
.set portUSPRG0_OFFSET, 12 .set portUSPRG0_OFFSET, 12
.set portSRR0_OFFSET, 8 .set portSRR0_OFFSET, 8
@ -167,10 +167,24 @@
# Store the stack pointer into the TCB # Store the stack pointer into the TCB
stw SP, 0( R2 ) stw SP, 0( R2 )
# Save the link register
stwu R1, -24( R1 )
mflr R0
stw R31, 20( R1 )
stw R0, 28( R1 )
mr R31, r1
.endm .endm
.macro portEXIT_SWITCHING_ISR .macro portEXIT_SWITCHING_ISR
# Restore the link register
lwz R11, 0( R1 )
lwz R0, 4( R11 )
mtlr R0
lwz R31, -4( R11 )
mr R1, R11
# Get the address of the TCB. # Get the address of the TCB.
xor R0, R0, R0 xor R0, R0, R0
addis SP, R0, pxCurrentTCB@ha addis SP, R0, pxCurrentTCB@ha
@ -179,11 +193,6 @@
# Get the task stack pointer from the TCB. # Get the task stack pointer from the TCB.
lwz SP, 0( SP ) lwz SP, 0( SP )
# Load up the LR for the correct return.
lwz R0,LRField(R1)
mtlr R0
.endm .endm

2
Source/portable/GCC/PPC405/portmacro.h
View file

@ -90,7 +90,7 @@ void vPortExitCritical( void );
/* Task utilities. */ /* Task utilities. */
void vPortYield( void ); void vPortYield( void );
#define portYIELD() asm volatile ( "SC" ) #define portYIELD() asm volatile ( "SC \n\t NOP" )
#define portYIELD_FROM_ISR() #define portYIELD_FROM_ISR()
/*-----------------------------------------------------------*/ /*-----------------------------------------------------------*/