Posted on October 28, 2017 at 21:50 ,
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I'm on version 5.15
And here is the assembler block in question: ,
__asm void xPortPendSVHandler( void )
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{
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extern uxCriticalNesting,
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extern pxCurrentTCB,
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extern vTaskSwitchContext,
PRESERVE8
mrs r0, psp
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isb
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/* Get the location of the current TCB. */
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ldr r3, =pxCurrentTCB
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ldr r2, [r3]
/* Is the task using the FPU context? If so, push high vfp registers. */
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tst r14, ♯ 0x10
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it eq
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vstmdbeq r0!, {s16-s31}
/* Save the core registers. */
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stmdb r0!, {r4-r11, r14}
/* Save the new top of stack into the first member of the TCB. */
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str r0, [r2]
stmdb sp!, {r3}
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mov r0, ♯ configMAX_SYSCALL_INTERRUPT_PRIORITY
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msr basepri, r0
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dsb
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isb
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bl vTaskSwitchContext
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mov r0, ♯ 0
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msr basepri, r0
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ldmia sp!, {r3}
/* The first item in pxCurrentTCB is the task top of stack. */
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ldr r1, [r3]
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ldr r0, [r1]
/* Pop the core registers. */
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ldmia r0!, {r4-r11, r14}
/* Is the task using the FPU context? If so, pop the high vfp registers
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too. */
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tst r14, ♯ 0x10
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it eq
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vldmiaeq r0!, {s16-s31}
msr psp, r0
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isb
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♯ ifdef WORKAROUND_PMU_CM001 /* XMC4000 specific errata */
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♯ if WORKAROUND_PMU_CM001 == 1
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push { r14 }
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pop { pc }
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nop
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♯ endif
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♯ endif
bx r14
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nop
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nop
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}
I guess it's something related to memory allocation on the stack? If I was not wrong on my assumption, this happens everytime I try to add some source files from the demo package that allocate memory on the CCM 0x10000000 region. ,
** Just updated the block! ,
