x86: Support tracing function
Some changes are needed to x86 timer functions to support tracing. Add
these so that the feature works correctly.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/x86/include/asm/global_data.h b/arch/x86/include/asm/global_data.h
index 4fdb080..9a2056a 100644
--- a/arch/x86/include/asm/global_data.h
+++ b/arch/x86/include/asm/global_data.h
@@ -40,7 +40,7 @@
#include <asm-generic/global_data.h>
#ifndef __ASSEMBLY__
-static inline gd_t *get_fs_gd_ptr(void)
+static inline __attribute__((no_instrument_function)) gd_t *get_fs_gd_ptr(void)
{
gd_t *gd_ptr;
diff --git a/arch/x86/include/asm/msr.h b/arch/x86/include/asm/msr.h
index 6030633..b459a63 100644
--- a/arch/x86/include/asm/msr.h
+++ b/arch/x86/include/asm/msr.h
@@ -85,7 +85,8 @@
#define EAX_EDX_RET(val, low, high) "=A" (val)
#endif
-static inline unsigned long long native_read_msr(unsigned int msr)
+static inline __attribute__((no_instrument_function))
+ unsigned long long native_read_msr(unsigned int msr)
{
DECLARE_ARGS(val, low, high);
diff --git a/arch/x86/include/asm/u-boot-x86.h b/arch/x86/include/asm/u-boot-x86.h
index 22e0934..709dc84 100644
--- a/arch/x86/include/asm/u-boot-x86.h
+++ b/arch/x86/include/asm/u-boot-x86.h
@@ -64,7 +64,7 @@
void board_init_f_r(void) __attribute__ ((noreturn));
/* Read the time stamp counter */
-static inline uint64_t rdtsc(void)
+static inline __attribute__((no_instrument_function)) uint64_t rdtsc(void)
{
uint32_t high, low;
__asm__ __volatile__("rdtsc" : "=a" (low), "=d" (high));
diff --git a/arch/x86/lib/gcc.c b/arch/x86/lib/gcc.c
index 4043431..497ad75 100644
--- a/arch/x86/lib/gcc.c
+++ b/arch/x86/lib/gcc.c
@@ -28,7 +28,9 @@
#define WRAP_LIBGCC_CALL(type, name) \
type __normal_##name(type a, type b) __attribute__((regparm(0))); \
type __wrap_##name(type a, type b); \
- type __wrap_##name(type a, type b) { return __normal_##name(a, b); }
+ type __attribute__((no_instrument_function)) \
+ __wrap_##name(type a, type b) \
+ { return __normal_##name(a, b); }
WRAP_LIBGCC_CALL(long long, __divdi3)
WRAP_LIBGCC_CALL(unsigned long long, __udivdi3)
diff --git a/arch/x86/lib/tsc_timer.c b/arch/x86/lib/tsc_timer.c
index c509801..0688973 100644
--- a/arch/x86/lib/tsc_timer.c
+++ b/arch/x86/lib/tsc_timer.c
@@ -37,7 +37,7 @@
* restart. This yields a free running counter guaranteed to take almost 6
* years to wrap around even at 100GHz clock rate.
*/
-u64 get_ticks(void)
+u64 __attribute__((no_instrument_function)) get_ticks(void)
{
u64 now_tick = rdtsc();
@@ -50,7 +50,7 @@
#define PLATFORM_INFO_MSR 0xce
/* Get the speed of the TSC timer in MHz */
-unsigned long get_tbclk_mhz(void)
+unsigned __attribute__((no_instrument_function)) long get_tbclk_mhz(void)
{
u32 ratio;
u64 platform_info = native_read_msr(PLATFORM_INFO_MSR);
@@ -75,7 +75,7 @@
return get_ms_timer() - base;
}
-ulong timer_get_us(void)
+ulong __attribute__((no_instrument_function)) timer_get_us(void)
{
return get_ticks() / get_tbclk_mhz();
}