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Inside Macintosh: Memory /

Chapter 4 - Memory Management Utilities / Memory Management Utilities Reference

Routines / Manipulating Memory Addresses

StripAddress

Use the StripAddress function to strip the flag bits from a 24-bit memory address.

FUNCTION StripAddress (address: UNIV Ptr): Ptr;

address

The address to strip.

DESCRIPTION

The StripAddress function returns a pointer that references the same address
passed in the address parameter, but in a form that is comprehensible to the 32-bit Memory Manager.

The effect of the StripAddress function depends on the startup mode of the Memory Manager, not on the current mode. Thus, if the Memory Manager started up in 32-bit mode, the address passed to StripAddress is unchanged (because it already must be a 32-bit address). If the Memory Manager started up in 24-bit mode, the function returns the low-order 3 bytes of the address. You should not pass valid 32-bit addresses to StripAddress if the Memory Manager started up in 24-bit mode.

ASSEMBLY-LANGUAGE INFORMATION

The registers on entry and exit for StripAddress are

Registers on entry
D0	The address to strip

Registers on exit
D0	The function result