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gem5: explain m5ops and create minimal one liner copy pastes

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Ciro Santilli
2018-05-29 00:21:04 +01:00
parent b19256b251
commit a8055cda60
2 changed files with 175 additions and 13 deletions
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60
kernel_module/user/m5ops.c Normal file
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@@ -0,0 +1,60 @@
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#define ENABLED 1
#if defined(__aarch64__)
static void m5_checkpoint()
{
__asm__ __volatile__ ("mov x0, 0; mov x1, 0; .inst 0xff000110 | (0x43 << 16);");
};
static void m5_dump_stats()
{
__asm__ __volatile__ ("mov x0, 0; mov x1, 0; .inst 0xff000110 | (0x41 << 16);");
};
static void m5_exit()
{
__asm__ __volatile__ ("mov x0, 0; .inst 0xff000110 | (0x21 << 16);");
};
static void m5_reset_stats()
{
__asm__ __volatile__ ("mov x0, 0; mov x1, 0; .inst 0xff000110 | (0x40 << 16);");
};
#else
#undef ENABLED
#define ENABLED 0
#endif
int main(
#if ENABLED
int argc, char **argv
#else
void
#endif
)
{
#if defined(__aarch64__)
char action;
if (argc > 1) {
action = argv[1][0];
} else {
action = 'e';
}
switch (action)
{
case 'c':
m5_checkpoint(0, 0);
break;
case 'd':
m5_dump_stats(0, 0);
break;
case 'e':
m5_exit();
break;
case 'r':
m5_reset_stats();
break;
}
#endif
return EXIT_SUCCESS;
}