From 170add97bb6fe1194a78aca0ad1aa6d99cd1fa09 Mon Sep 17 00:00:00 2001
From: Petar Andric <petar.andric@bsc.es>
Date: Thu, 13 Mar 2025 15:50:07 +0100
Subject: [PATCH 1/2] Zeroth variance before calculating standard deviation

---
 scripts/run.sh | 1 +
 1 file changed, 1 insertion(+)

diff --git a/scripts/run.sh b/scripts/run.sh
index 0a1c1f4..4fe50f0 100755
--- a/scripts/run.sh
+++ b/scripts/run.sh
@@ -22,6 +22,7 @@ calculate_stats() {
     local count=${#values[@]}
     local min=${values[0]}
     local max=${values[0]}
+    local variance=0
 
     # Calculate sum, min, and max
     for value in "${values[@]}"; do
-- 
GitLab


From 908dbbfe0c34bc564f66dce94c94c87854b3a035 Mon Sep 17 00:00:00 2001
From: Petar Andric <petar.andric@bsc.es>
Date: Thu, 13 Mar 2025 16:03:18 +0100
Subject: [PATCH 2/2] Detect architecture

---
 scripts/run.sh | 2 +-
 src/eval.cpp   | 5 +++++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/scripts/run.sh b/scripts/run.sh
index 4fe50f0..d5b3d0b 100755
--- a/scripts/run.sh
+++ b/scripts/run.sh
@@ -3,7 +3,7 @@ SYSCALL="getpid"
 BUILD=../build
 
 REPEATS=20
-ARCH="X86"
+ARCH="$(uname -m 2>/dev/null || echo -n unknown)"
 
 NATIVE="$BUILD/opendevnull --syscall $SYSCALL"
 INTERC="$BUILD/opendevnull --syscall $SYSCALL"
diff --git a/src/eval.cpp b/src/eval.cpp
index 13d2438..d6aec1a 100644
--- a/src/eval.cpp
+++ b/src/eval.cpp
@@ -12,7 +12,12 @@ stop_interception() __attribute__((destructor));
 int
 hook_openat(int dirfd, const char* cpath, int flags, mode_t mode) {
 
+#if defined(__x86_64) || defined(__x86_64__)
     return syscall_no_intercept(SYS_openat, dirfd, cpath, flags, mode);
+#elif defined(__riscv) || defined(__riscv__)
+    wrapper_ret ret = syscall_no_intercept(SYS_openat, dirfd, cpath, flags, mode);
+    return (int)ret.a0;
+#endif
 }
 
 int
-- 
GitLab