Transcript Additional Material -- More Example Blackfin Code

More Example Blackfin Code
Using the E-UNITTest Framework
Using E-TDD environment
• Build the tests you want to pass
• Build the code
• Test the code
Using E-TDD environment
• Using the C++ tests, build the ASM tests
(cut and paste is all that is needed)
• Build the ASM stubs (Makes sure that you
can load the load into the processor
• Test the code stub – program will run but
fail the tests as only stubs
• Build the code
• Test the code
Build the stub 1
Find the name mangling needed
• Just build the code
• VDSP will tell you the necessary namemangled names
• Cut and paste the names
Build the stub 2
• These examples use an alternate approach to returning
to C++, not RTS
• This approach using LINK and UNLINK is required when
assembly code subroutine call assembly language
subroutines
Expect error messages
But not these ones
Code review
Missing a ; at end of line
Need to learn to READ
And listen to assembler
That semicolon is not
the one that was missing
There is one semicolon too many
in the define statement
Less errors
But I am still not
listening to the assembler
Look on reference sheet
R0 *= R1;
Page 2, column 3
Assembled
But failed tests
What of GS is happening
Build the ASM test
by cut-and-paste
Stubs assemble
But unexpected messages
Build the ASM test
by cut-and-paste CORRECTLY
Wrong method
Incoming parameters – come in R0
Outgoing parameters – go in R0
Return values – go in R0
Same problem on the MIPS