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[/] [openrisc/] [trunk/] [rtos/] [freertos-6.1.1/] [Source/] [portable/] [Renesas/] [SH2A_FPU/] [ISR_Support.inc] - Blame information for rev 825

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Line No. Rev Author Line
1 572 jeremybenn 
        .macro portSAVE_CONTEXT
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        ; Save r0 to r14 and pr.
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        movml.l r15, @-r15
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        ; Save mac1, mach and gbr
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        sts.l   macl, @-r15
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        sts.l   mach, @-r15
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        stc.l   gbr, @-r15
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        ; Get the address of pxCurrentTCB
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        mov.l   #_pxCurrentTCB, r0
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        ; Get the address of pxTopOfStack from the TCB.
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        mov.l   @r0, r0
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        ; Save the stack pointer in pxTopOfStack.
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        mov.l   r15, @r0
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        .endm
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;-----------------------------------------------------------
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        .macro portRESTORE_CONTEXT
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        ; Get the address of the pxCurrentTCB variable.
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        mov.l   #_pxCurrentTCB, r0
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        ; Get the address of the task stack from pxCurrentTCB.
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        mov.l   @r0, r0
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        ; Get the task stack itself into the stack pointer.
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        mov.l   @r0, r15
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        ; Restore system registers.
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        ldc.l   @r15+, gbr
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        lds.l   @r15+, mach
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        lds.l   @r15+, macl
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        ; Restore r0 to r14 and PR
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        movml.l @r15+, r15
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        ; Pop the SR and PC to jump to the start of the task.
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        rte
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        nop
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        .endm
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;-----------------------------------------------------------

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