CC78K4 datasheet(478/523 Pages) NEC

номер детали	CC78K4

подробное описание детали	CC78K4 Ver.2.30 or Later, C Compiler Language

PDF	523 Pages

Scroll/Zoom	100%

производитель	NEC [NEC]

домашняя страница	http://www.nec.com/

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CHAPTER 12 REFERENCING THE ASSEMBLER

User’s Manual U15556EJ1V0UM

478

<6> Restoring the saved registers

The saved contents of the base pointer and work registers are restored.

<7> Returning control to main

Figure 12-2. Stack Area After Return

Higher word

Return address to main

l (Lower word)

l (Upper word)

Low address

Stack pointer

Stack area

High address

Word

Return value

BC register

RP2 register

BC register

Lower word

The procedure for calling an assembly language from C and the processing of the assembly language routine

are illustrated in Figure 12-3.

Figure 12-3. Calling Assembly Language Routine from C

Return address to main

l (Lower word)

l (Higher word)

Low address

Stack pointer

Stack area

Arguments to be passed to FUNC

AX register

High address

Higher word

Return address to main

l (Lower word)

l (Higher word)

Low address

Stack pointer

Stack area

High address

Word

Return value

BC register

RP2 register

BC register

Lower word

Processing

[FUNC function]

Saving register

(U)UP, RP3, (V)VP*

Storing return value

in BC or RP2, bc

Restoring registers

[Function main]

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