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mibuild/sim: simplify console_tb with sim struct

This commit is contained in:
Florent Kermarrec 2015-03-03 17:57:58 +01:00
parent 991572f4fe
commit 5ec26a49c3
1 changed files with 28 additions and 22 deletions
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56
mibuild/sim/console_tb.cpp
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@ -69,11 +69,18 @@ double sc_time_stamp()
Vdut* dut; Vdut* dut;
VerilatedVcdC* tfp; VerilatedVcdC* tfp;
unsigned int tick;
/* ios */ /* ios */
int console_service() struct sim {
bool run;
unsigned int tick;
clock_t start;
clock_t end;
};
int console_service(struct sim *s)
{ {
/* fpga --> console */ /* fpga --> console */
SERIAL_SOURCE_ACK = 1; SERIAL_SOURCE_ACK = 1;
@ -86,7 +93,7 @@ int console_service()
/* console --> fpga */ /* console --> fpga */
SERIAL_SINK_STB = 0; SERIAL_SINK_STB = 0;
if (tick%(1000) == 0) { if (s->tick%(1000) == 0) {
if(kbhit()) { if(kbhit()) {
char c = getch(); char c = getch();
if (c == 27 && !kbhit()) { if (c == 27 && !kbhit()) {
@ -101,33 +108,32 @@ int console_service()
return 0; return 0;
} }
void sim_tick() void sim_tick(struct sim *s)
{ {
SYS_CLK = tick%2; SYS_CLK = s->tick%2;
dut->eval(); dut->eval();
if (trace) if (trace)
tfp->dump(tick); tfp->dump(s->tick);
tick++; s->tick++;
s->end = clock();
} }
void sim_init() void sim_init(struct sim *s)
{ {
int i; int i;
tick = 0; s->tick = 0;
#ifdef SYS_RST #ifdef SYS_RST
SYS_RST = 1; SYS_RST = 1;
SYS_CLK = 0; SYS_CLK = 0;
for (i=0; i<8; i++) for (i=0; i<8; i++)
sim_tick(); sim_tick(s);
SYS_RST = 0; SYS_RST = 0;
#endif #endif
s->start = clock();
} }
int main(int argc, char **argv, char **env) int main(int argc, char **argv, char **env)
{ {
clock_t start;
clock_t end;
float speed; float speed;
set_conio_terminal_mode(); set_conio_terminal_mode();
@ -140,19 +146,19 @@ int main(int argc, char **argv, char **env)
dut->trace(tfp, 99); dut->trace(tfp, 99);
tfp->open("dut.vcd"); tfp->open("dut.vcd");
start = clock(); struct sim s;
sim_init(); sim_init(&s);
bool run = true;
while(run) {
sim_tick();
if (SYS_CLK) {
if (console_service() != 0)
run = false;
}
}
end = clock();
speed = (tick/2)/((end-start)/CLOCKS_PER_SEC); s.run = true;
while(s.run) {
sim_tick(&s);
if (SYS_CLK) {
if (console_service(&s) != 0)
s.run = false;
}
}
speed = (s.tick/2)/((s.end-s.start)/CLOCKS_PER_SEC);
printf("average speed: %3.3f MHz\n\r", speed/1000000); printf("average speed: %3.3f MHz\n\r", speed/1000000);