Analog Devices VISUALDSP++ 3.5 Manual page 14

CONTENTS
C/C++ Run-Time Model and Environment ............................... 1-153
Using the Run-Time Header ............................................... 1-154
Interrupt Table and Interface ............................................... 1-154
Stack Frame ........................................................................ 1-155
Stack Frame Description ..................................................... 1-157
General System-Wide Specifications ................................ 1-158
At a procedure call, the following must be true: ........... 1-159
At an interrupt, the following must be true: ................. 1-159
Return Values ................................................................. 1-159
Procedure Call and Return .............................................. 1-159
On Entry: ................................................................... 1-160
To Return from a Procedure: ....................................... 1-160
Miscellaneous Information .................................................. 1-161
Register Classification ......................................................... 1-161
Callee Preserved Registers ("Preserved") .......................... 1-161
Dedicated Registers ........................................................ 1-161
Caller Save Registers ("Scratch") ..................................... 1-161
Circular Buffer Length Registers ..................................... 1-162
Mode Status (MSTAT) Register ...................................... 1-162
Complete List of Registers .............................................. 1-163
File I/O Support ................................................................. 1-166
Extending I/O Support To New Devices ......................... 1-166
C/C++ and Assembly Language Interface .................................. 1-169
Calling Assembly Subroutines from C/C++ Programs ........... 1-170
xiv VisualDSP++ 3.5 C/C++ Compiler and Library Manual
for ADSP-219x DSPs