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Add CFI frame unwind info in portable/IAR/RXv2/port_asm.s (#1341)

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This allows the IAR debugger to display the callstack beyond
__interrupt_27 when a breakpoint in vTaskSwitchContext is made.
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Bernd Edlinger 2026-01-12 13:23:32 +01:00 • committed by GitHub
parent c53a6b0547
commit d5c3c98ae4
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1 changed files with 53 additions and 0 deletions
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53
portable/IAR/RXv2/port_asm.s
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@ -34,6 +34,37 @@
EXTERN _pxCurrentTCB
EXTERN _vTaskSwitchContext
CFI Names cfiNames0
CFI StackFrame CFA SP DATA
CFI VirtualResource ?RET:32
CFI Resource R1:32, R2:32, R3:32, R4:32, R5:32, R6:32, R7:32, R8:32
CFI Resource R9:32, R10:32, R11:32, R12:32, R13:32, R14:32, R15:32
CFI Resource SP:32
CFI EndNames cfiNames0
CFI Common cfiCommon0 Using cfiNames0
CFI CodeAlign 1
CFI DataAlign 1
CFI ReturnAddress ?RET CODE
CFI CFA SP+4
CFI ?RET Frame(CFA, -4)
CFI R1 Undefined
CFI R2 Undefined
CFI R3 Undefined
CFI R4 Undefined
CFI R5 Undefined
CFI R6 SameValue
CFI R7 SameValue
CFI R8 SameValue
CFI R9 SameValue
CFI R10 SameValue
CFI R11 SameValue
CFI R12 SameValue
CFI R13 SameValue
CFI R14 Undefined
CFI R15 Undefined
CFI EndCommon cfiCommon0
RSEG CODE:CODE(4)
_prvStartFirstTask:
@ -91,6 +122,9 @@ _prvStartFirstTask:
/*-----------------------------------------------------------*/
/* The software interrupt - overwrite the default 'weak' definition. */
CFI Block cfiBlock0 Using cfiCommon0
CFI Function ___interrupt_27
CODE
___interrupt_27:
/* Re-enable interrupts. */
@ -151,6 +185,24 @@ ___interrupt_27:
MVTIPL #configMAX_SYSCALL_INTERRUPT_PRIORITY
/* Select the next task to run. */
CFI ?RET Frame(CFA, -8)
CFI R15 Frame(CFA, -12)
CFI R14 Frame(CFA, -16)
CFI R13 Frame(CFA, -20)
CFI R12 Frame(CFA, -24)
CFI R11 Frame(CFA, -28)
CFI R10 Frame(CFA, -32)
CFI R9 Frame(CFA, -36)
CFI R8 Frame(CFA, -40)
CFI R7 Frame(CFA, -44)
CFI R6 Frame(CFA, -48)
CFI R5 Frame(CFA, -52)
CFI R4 Frame(CFA, -56)
CFI R3 Frame(CFA, -60)
CFI R2 Frame(CFA, -64)
CFI R1 Frame(CFA, -68)
CFI CFA SP+96
CFI FunCall _vTaskSwitchContext
BSR.A _vTaskSwitchContext
/* Reset the interrupt mask as no more data structure access is required. */
@ -194,6 +246,7 @@ ___interrupt_27:
RTE
NOP
NOP
CFI EndBlock cfiBlock0
/*-----------------------------------------------------------*/