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ARMulator Reference

4.8 Memory access functions

The memory system can be probed by a peripheral model using a set of functions for

reading and writing memory. These functions access memory without inserting cycles

on the bus. If your model inserts cycles on the bus, it must install itself as a memory

model, possibly between the core and the real memory model.

NoteNote

It is not possible to tell if these calls result in a data abort.

4.8.1 Reading from a given address

The following functions return the word, halfword, or byte at the specified address.

Each function accesses the memory without inserting cycles on the bus.

Syntax

ARMword ARMulif_ReadWord(RDIModuleDesc *mdesc, ARMword address)

ARMword ARMulif_ReadHalfword(RDIModuleDesc *mdesc, ARMword address)

ARMword ARMulif_ReadByte(RDIModuleDesc *mdesc, ARMword address)

where:

mdesc

is the handle for the core.

address

is the address in simulated memory from which the word, halfword, or

byte is to be read.

Return

The functions return the word, halfword, or byte, as appropriate.

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ARM VERSION 1.2 Fiche technique Page 98