diff options
Diffstat (limited to 'benchmarks/common/syscalls.c')
| -rw-r--r-- | benchmarks/common/syscalls.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/benchmarks/common/syscalls.c b/benchmarks/common/syscalls.c index d506536..fbbb880 100644 --- a/benchmarks/common/syscalls.c +++ b/benchmarks/common/syscalls.c @@ -34,6 +34,13 @@ static long counters[NUM_COUNTERS]; static char* counter_names[NUM_COUNTERS]; static int handle_stats(int enable) { + //use csrs to set stats register + if(enable) { + asm volatile (R"( + addi v0, x0, 1 + csrrs v0, stats, v0 + )" : : : "v0"); + } int i = 0; #define READ_CTR(name) do { \ while (i >= NUM_COUNTERS) ; \ @@ -47,6 +54,12 @@ static int handle_stats(int enable) READ_CTR(uarch8); READ_CTR(uarch9); READ_CTR(uarch10); READ_CTR(uarch11); READ_CTR(uarch12); READ_CTR(uarch13); READ_CTR(uarch14); READ_CTR(uarch15); #undef READ_CTR + if(!enable) { + asm volatile (R"( + addi v0, x0, 1 + csrrc v0, stats, v0 + )" : : : "v0"); + } return 0; } @@ -59,7 +72,7 @@ static void tohost_exit(int code) long handle_trap(long cause, long epc, long regs[32]) { int csr_insn; - asm volatile ("lw %0, 1f; j 2f; 1: csrr v0, uarch0; 2:" : "=r"(csr_insn)); + asm volatile ("lw %0, 1f; j 2f; 1: csrr v0, stats; 2:" : "=r"(csr_insn)); long sys_ret = 0; if (cause == CAUSE_ILLEGAL_INSTRUCTION && |