Georg-Johann Lay wrote: > Georg-Johann Lay schrieb: >> With the avrtest simulator, I observe the following problem with the >> -m option (max instruction count): >> >>> avrtest var-expand2.exe -mmcu=avr51 -m 1019948 >> exit status: TIMEOUT >> reason: instruction count limit reached >> program: var-expand2.exe >> exit address: 000318 >> total cycles: 1483103 >> >>> avrtest var-expand2.exe -mmcu=avr51 -m 1019949 >> [...avrtest hangs...] >> >> So there is a barrier: for all -m values >= 1019949 avrtest hangs, for >> -m <= 1019948 avrtest stops as desired. >> >> I am using avrtest as of >> http://winavr.cvs.sourceforge.net/viewvc/winavr/avrtest/ >> >> All this blocks my work on avr-gcc, because I use avrtest as simulator >> to run regression tests. FYI, I attached the avr-elf32 executable >> var-expand2.exe (as tar, because mailing list rejects .exe). >> >> Is there a place that hosts updated versions of avrtest or is there a >> site with more stable simulator that can run avr regression tests? >> >> Thanks for any hints on that. > > The problem is in avrtest.c:335 > > static int data_read_byte_raw(int address) > { > // add code here to handle special events > > if (address == STDIO_PORT) > return getchar(); > > return cpu_data[address]; > } > > address happens to be 82 which equals STDIO_PORT, therefore avrtest > waits for input. I removed the if and avrtest works as expected; the > test program hits ABORT in the remainder.
This "happens to be" is quite strange. If this is happening I would expect the var-expand2 program to have a bug and is actually reading stdin for some reason. Or maybe you are compiling the test suite for a cpu model that has RAM at those adresses? The last time I ran the test suite I was compiling for an atmega128 IIRC. BTW, I was just looking at the repository and it seems that my last change to implement cycle counters (very useful for benchmarking) that I thought I committed is not there. Did I forgot to commit or did the repository went back in time at some point? -- Paulo Marques Software Development Department - Grupo PIE, S.A. Phone: +351 252 290600, Fax: +351 252 290601 Web: www.grupopie.com "To know recursion, you must first know recursion." _______________________________________________ AVR-GCC-list mailing list AVR-GCC-list@nongnu.org http://lists.nongnu.org/mailman/listinfo/avr-gcc-list
