sandbox: Support trace feature
Support tracing on sandbox by adding suitable CONFIG options. To enable it,
compile U-Boot with FTRACE=1.
The timer functions are marked to skip tracing, since these are called from
the tracing code itself, and we want to avoid an infinite loop.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/sandbox/cpu/cpu.c b/arch/sandbox/cpu/cpu.c
index dd8d495..e9385de 100644
--- a/arch/sandbox/cpu/cpu.c
+++ b/arch/sandbox/cpu/cpu.c
@@ -37,7 +37,7 @@
os_usleep(usec);
}
-unsigned long timer_get_us(void)
+unsigned long __attribute__((no_instrument_function)) timer_get_us(void)
{
return os_get_nsec() / 1000;
}
diff --git a/arch/sandbox/cpu/os.c b/arch/sandbox/cpu/os.c
index d075407..541e450 100644
--- a/arch/sandbox/cpu/os.c
+++ b/arch/sandbox/cpu/os.c
@@ -152,7 +152,7 @@
usleep(usec);
}
-u64 os_get_nsec(void)
+u64 __attribute__((no_instrument_function)) os_get_nsec(void)
{
#if defined(CLOCK_MONOTONIC) && defined(_POSIX_MONOTONIC_CLOCK)
struct timespec tp;