ARM Compiler toolchain v4.1 for µVision Using the Compiler

Using the Inline and Embedded Assemblers of the ARM Compiler
7.44 __mcall_this_offset(D, f)
Where D is a class type and f is a nonstatic member function defined in D or a nonvirtual base
class of D.
This returns the offset from the beginning of a D object to the start of the base in which f is
defined. This is the this adjustment necessary when making a call to f with a pointer to a D. It
is either zero if f is found in D or the same as __offsetof_base(D,B), where B is a nonvirtual base
class of D that contains f.
If __mcall_this_offset(D,f) is used when f is found in a virtual base class of D it returns an
arbitrary value designed to cause an assembly error if used. This is so that such invalid uses of
__mcall_this_offset can occur in sections of assembly code that are to be skipped.
7.44.1 See also
Tasks
• Calling a nonvirtual member function on page 7-54
• Calling a virtual member function on page 7-55.
Concepts
• Compiler-supported keywords for calling class member functions in embedded assembler
on page 7-47.
ARM DUI 0375C Copyright © 2007-2008, 2011 ARM. All rights reserved. 7-51
ID061811
Non-Confidential