2007-02-06 Josh Stone <joshua.i.stone@intel.com>

runtime/
	* loc2c-runtime.h (kread): Let it work with const types.

testsuite/
	* systemtap.base/deref.stp: Test kread with const sources.

1 files changed, 36 insertions, 0 deletions

diff --git a/testsuite/systemtap.base/deref.stp b/testsuite/systemtap.base/deref.stp
index d2399589..b003d657 100644
--- a/testsuite/systemtap.base/deref.stp
+++ b/testsuite/systemtap.base/deref.stp
@@ -14,6 +14,12 @@ probe end(1) {
   log_test("kread u64", kread_u64())
   log_test("kread ptr", kread_ptr())
 
+  log_test("kread const u8", kread_const_u8())
+  log_test("kread const u16", kread_const_u16())
+  log_test("kread const u32", kread_const_u32())
+  log_test("kread const u64", kread_const_u64())
+  log_test("kread const ptr", kread_const_ptr())
+
   log_test("kwrite u8", kwrite_u8())
   log_test("kwrite u16", kwrite_u16())
   log_test("kwrite u32", kwrite_u32())
@@ -58,6 +64,36 @@ function kread_ptr:long() %{
   CATCH_DEREF_FAULT();
 %}
 
+function kread_const_u8:long() %{
+  const uint8_t local = 0x42;
+  THIS->__retvalue = (local == kread(&local));
+  CATCH_DEREF_FAULT();
+%}
+
+function kread_const_u16:long() %{
+  const uint16_t local = 0xBEEF;
+  THIS->__retvalue = (local == kread(&local));
+  CATCH_DEREF_FAULT();
+%}
+
+function kread_const_u32:long() %{
+  const uint32_t local = 0xDEADBEEF;
+  THIS->__retvalue = (local == kread(&local));
+  CATCH_DEREF_FAULT();
+%}
+
+function kread_const_u64:long() %{
+  const uint64_t local = 0xDEADBEEFBAADF00DLL;
+  THIS->__retvalue = (local == kread(&local));
+  CATCH_DEREF_FAULT();
+%}
+
+function kread_const_ptr:long() %{
+  const struct task_struct *local = current;
+  THIS->__retvalue = (local == kread(&local));
+  CATCH_DEREF_FAULT();
+%}
+
 // NB: kwrite uses system macros with inline asm, with this comment:
 //
 //   Tell gcc we read from memory instead of writing: this is because we do not