From: Nicholas Nethercote <n.nethercote@gmail.com>
Date: Fri, 16 Apr 2004 22:21:18 +0000 (+0000)
Subject: Added comment clarifying RDTSC.
X-Git-Tag: svn/VALGRIND_2_1_2~137
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=5c07d8623ba2631aa7eba6f8ffd543bda93f7eff;p=thirdparty%2Fvalgrind.git

Added comment clarifying RDTSC.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@2370
---

diff --git a/coregrind/vg_to_ucode.c b/coregrind/vg_to_ucode.c
index 6e5a4e2363..a375c08d02 100644
--- a/coregrind/vg_to_ucode.c
+++ b/coregrind/vg_to_ucode.c
@@ -6728,6 +6728,9 @@ static Addr disInstr ( UCodeBlock* cb, Addr eip, Bool* isEnd )
          t2 = newTemp(cb);
          t3 = newTemp(cb);
          uInstr0(cb, CALLM_S, 0);
+         // Nb: even though these args aren't used by RDTSC_helper, need
+         // them to be defined (for Memcheck).  The TempRegs pushed must
+         // also be distinct.
          uInstr2(cb, MOV,   4, Literal, 0, TempReg, t1);
          uLiteral(cb, 0);
          uInstr1(cb, PUSH,  4, TempReg, t1);