Changeset 125

Timestamp:

Jul 3, 2017, 2:45:44 PM (7 years ago)

Author:

max@…

Message:

implement hal_time_stamp and hal_fence

Location:

trunk/hal/x86_64/core

Files:

• hal_cpu.S (modified) (1 diff)
• hal_internal.h (modified) (1 diff)
• hal_special.c (modified) (2 diffs)

trunk/hal/x86_64/core/hal_cpu.S

@@ -91 +91 @@
         ret
 
+ASM_ENTRY(mfence)
+        mfence
+        ret
+
 ASM_ENTRY(rcr2)
         movq    %cr2,%rax

trunk/hal/x86_64/core/hal_internal.h

@@ -40 +40 @@
 uint64_t rdmsr(uint32_t);
 void wrmsr(uint32_t, uint64_t);
+void mfence();
 vaddr_t rcr2(void);
 

trunk/hal/x86_64/core/hal_special.c

@@ -76 +76 @@
 }
 
+cycle_t hal_time_stamp()
+{
+        return rdtsc();
+}
+
 uint64_t hal_get_cycles()
 {
@@ -144 +149 @@
 void hal_fence()
 {
-        x86_panic((char *)__func__);
+        mfence();
 }