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Fix Interrupt depth comparison logic

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Fix parameter mismatch in portmacro.h file
Add comment to explain assembly code
This commit is contained in:
Trong Nguyen 2024-10-31 19:42:25 +07:00
parent a9751adbcc
commit 530462ace4
4 changed files with 16 additions and 11 deletions
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11
portable/CCRH/F1Kx/portasm.s
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@ -84,6 +84,8 @@ portSAVE_CONTEXT .macro
stsr FPEPC, r19
pushsp r18, r19
; Save EIPSW register to stack
; Due to the syntax of the pushsp instruction, using r14 as dummy value
pushsp r14, r15
; Get current TCB, the return value is stored in r10 (CCRH compiler)
@ -103,6 +105,8 @@ portRESTORE_CONTEXT .macro
; Restore FPU registers if FPU is enabled
mov FPU_MSK, r19
; Restore EIPSW register to check FPU
; Due to the syntax of the popsp instruction, using r14 as dummy value
popsp r14, r15
tst r15, r19
; Jump over next 3 instructions: stsr (4 bytes)*2 + popsp (4 bytes)
@ -269,9 +273,10 @@ _vIrq_Handler:
; Do not enable interrupt for nesting. Stackover flow may occurs if the
; depth of nesting interrupt is exceeded.
mov #_uxPortMaxInterruptDepth, r15
cmp r16, r15
be 4 ; Jump over ei instruction
mov #_uxPortMaxInterruptDepth, r19
ld.w 0[r19], r15
cmp r15, r16
bge 4 ; Jump over ei instruction
ei
jarl _vCommonISRHandler, lp
di