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Figure 1: ARM stack frames for functions that take a fixed number of arguments
Before call:
After call:
FP
local variables,
local variables,
register save area,
High
register save area,
etc.
memory
etc.
reserved space for
largest arghument list
SP
arguments on stack
FP
register save area
local variables
alloca
allocations
Low
memory
Red Hat
reserved space for
largest arghument list
SP
GNUPro Toolkit for Embedded Systems ■ 109