tests/tcg/aarch64: Adjust pauth tests for FEAT_FPAC

[mirror_qemu.git] / tests / tcg / aarch64 / pauth-4.c

diff --git a/tests/tcg/aarch64/pauth-4.c b/tests/tcg/aarch64/pauth-4.c
index 1040e92aec3eb8992114a2cc2a818cd7f636925b..b254f413afdc4e187e463ce87bfee717caf4b5c3 100644 (file)
--- a/tests/tcg/aarch64/pauth-4.c
+++ b/tests/tcg/aarch64/pauth-4.c
@@ -1,25 +1,55 @@
 #include <stdint.h>
 #include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include "pauth.h"
+
+#define TESTS 1000
 
 int main()
 {
-  uintptr_t x, y;
-
-  asm("mov %0, lr\n\t"
-      "pacia %0, sp\n\t"        /* sigill if pauth not supported */
-      "eor %0, %0, #4\n\t"      /* corrupt single bit */
-      "mov %1, %0\n\t"
-      "autia %1, sp\n\t"        /* validate corrupted pointer */
-      "xpaci %0\n\t"            /* strip pac from corrupted pointer */
-      : "=r"(x), "=r"(y));
-
-  /*
-   * Once stripped, the corrupted pointer is of the form 0x0000...wxyz.
-   * We expect the autia to indicate failure, producing a pointer of the
-   * form 0x000e....wxyz.  Use xpaci and != for the test, rather than
-   * extracting explicit bits from the top, because the location of the
-   * error code "e" depends on the configuration of virtual memory.
-   */
-  assert(x != y);
-  return 0;
+    char base[TESTS];
+    int i, count = 0;
+    float perc;
+    int pac_feature = get_pac_feature();
+
+    /*
+     * Exit if no PAuth or FEAT_FPAC, which will SIGILL on AUTIA failure
+     * rather than return an error for us to check below.
+     */
+    if (pac_feature == 0 || pac_feature >= 4) {
+        return 0;
+    }
+
+    for (i = 0; i < TESTS; i++) {
+        uintptr_t in, x, y;
+
+        in = i + (uintptr_t) base;
+
+        asm("mov %0, %[in]\n\t"
+            "pacia %0, sp\n\t"
+            "eor %0, %0, #4\n\t"      /* corrupt single bit */
+            "mov %1, %0\n\t"
+            "autia %1, sp\n\t"        /* validate corrupted pointer */
+            "xpaci %0\n\t"            /* strip pac from corrupted pointer */
+            : /* out */ "=r"(x), "=r"(y)
+            : /* in */ [in] "r" (in)
+            : /* clobbers */);
+
+        /*
+         * Once stripped, the corrupted pointer is of the form 0x0000...wxyz.
+         * We expect the autia to indicate failure, producing a pointer of the
+         * form 0x000e....wxyz.  Use xpaci and != for the test, rather than
+         * extracting explicit bits from the top, because the location of the
+         * error code "e" depends on the configuration of virtual memory.
+         */
+        if (x != y) {
+            count++;
+        }
+    }
+
+    perc = (float) count / (float) TESTS;
+    printf("Checks Passed: %0.2f%%\n", perc * 100.0);
+    assert(perc > 0.95);
+    return 0;
 }