Added payload for figuring out sleep function

2020-01-11 17:14:10 -05:00
parent ad9ce8f850
commit 477d7079c8
7 changed files with 37 additions and 22 deletions
--- a/c8_payloads/src/task_sleep_test.c
+++ b/c8_payloads/src/task_sleep_test.c
@@ -0,0 +1,20 @@
+#include "util.h"
+#include "brfunc_common.h"
+
+PAYLOAD_SECTION
+void task_sleep(unsigned int usec)
+{
+    ((BOOTROM_FUNC) ADDR_TASK_SLEEP)(usec);
+}
+
+TEXT_SECTION
+unsigned long long _start(unsigned int usec)
+{
+    unsigned long long start, end;
+
+    __asm__ volatile ("mrs %0, cntpct_el0" : "=r" (start));
+    task_sleep(usec);
+    __asm__ volatile ("mrs %0, cntpct_el0" : "=r" (end));
+
+    return end - start;
+}