This section contains several example of using the target Microprocessor simulator.
$ erc-coff-run hello Hello world
$ erc-coff-run -s hello Clock Cycles regular : 1735, 67.56 % annulled : 2, 0.08 % stalls : 831, 32.36 % Total : 2568 Instructions call : 12, 1.01 % woverflow : 0, 0.00 % (0.00 % of calls) wunderflow : 0, 0.00 % (0.00 % of calls) integer : 622, 52.23 % load : 159, 13.35 % store : 211, 17.72 % branch : 199, 16.71 % float : 0, 0.00 % Total : 1191 Average Cycles per Instruction (CPI) Integer CPI : 2.16 Float CPI : nan Overall CPI : 2.16 Performance ERC32 performance (10.0 MHz): 4.64 MOPS ( 4.64 MIPS, 0.00 MFLOPS) Simulated ERC32 time : 0.26 ms Processor utilisation : 100.00 % Real-time / simulator-time : 1/0.00 Simulator performance : 1 KIPS Used time (sys + user) : 0 s Hello World
The following example shows an instruction trace with line numbers. We have delayed the trace by 200 microseconds to skip to the lines of interest.
$ erc-coff-run -t -d 250 hello
/home/nettleto/xgc/work/erc32-ada/gcc/ada/rts/x-seriio.adb:168
<write+38>
250.000 02001AA8 ldub [ %i1 + %o2 ], %o0
250.200 02001AAC cmp %o0, 0xa
250.400 02001AB0 bne 0x2001ae0
250.500 02001AB4 mov %o4, %o1
/home/nettleto/xgc/work/erc32-ada/gcc/ada/rts/x-seriio.adb:169
250.600 02001AB8 ld [ %o4 + 0xe8 ], %o0
250.800 02001ABC btst 4, %o0
251.000 02001AC0 bne 0x2001ad8
251.100 02001AC4 nop
/home/nettleto/xgc/work/erc32-ada/gcc/ada/rts/x-seriio.adb:173
<write+68>
251.200 02001AD8 st %g3, [ %o5 + 0xe0 ]
/home/nettleto/xgc/work/erc32-ada/gcc/ada/rts/x-seriio.adb:176
251.500 02001ADC mov %o4, %o1
251.600 02001AE0 ld [ %o1 + 0xe8 ], %o0
251.800 02001AE4 btst 4, %o0
252.000 02001AE8 be 0x2001ae0
252.100 02001AEC nop
/home/nettleto/xgc/work/erc32-ada/gcc/ada/rts/x-seriio.adb:180
252.200 02001AF0 ldub [ %i1 + %o2 ], %o0
252.400 02001AF4 st %o0, [ %o5 + 0xe0 ]
...lots of output...