Texas Instruments TMS320C64X manual How to Rebuild Dsplib, Interrupt Behavior of Dsplib Functions

How to Rebuild DSPLIB

2.2.6Interrupt Behavior of DSPLIB Functions

All of the functions in this library are designed to be used in systems with interrupts. Thus, it is not necessary to disable interrupts when calling any of these functions. The functions in the library will disable interrupts as needed to protect the execution of code in tight loops and so on. Library functions have three categories:

-Fully-interruptible:These functions do not disable interrupts. Interrupts are blocked by at most 5 to 10 cycles at a time (not counting stalls) by branch delay slots.

-Partially-interruptible:These functions disable interrupts for long periods of time, with small windows of interruptibility. Examples include a function with a nested loop, where the inner loop is non-interruptible and the outer loop permits interrupts between executions of the inner loop.

-Non-interruptible:These functions disable interrupts for nearly their entire duration. Interrupts may happen for a short time during the setup and exit sequence.

Note that all three function categories tolerate interrupts. That is, an interrupt can occur at any time without affecting the function correctness. The interruptibility of the function only determines how long the kernel might delay the processing of the interrupt.

2.3 How to Rebuild DSPLIB

If you would like to rebuild DSPLIB (for example, because you modified the source file contained in the archive), you will have to use the mk6x utility as follows:

mk6x dsp64plus.src −mv64plus −l dsp64plus.lib

Installing and Using DSPLIB 2-5