[Valgrind-users] Missing SSE instruction...

[Josef W. <Jos...@gm...>]

Hi,

with code compiled with Intels Fortran compiler, I get
=============================================
disInstr: unhandled instruction bytes: 0x66 0xF 0x5A 0xC0
** Illegal Instruction **
--2913-- FATAL: unhandled syscall: 218
=============================================

The sycall 218 seems to be in a handler for illegal instructions ?!?

This is "cvtpd2ps %xmm0,%xmm0". The instruction is from
the SSE version of logf(), symbol "__libm_sse2_logf".

Proposed patch (it is working, but I really don't know what I am doing here):
=============================================================
--- vg_to_ucode.c.orig  2003-11-18 11:10:08.000000000 +0100
+++ vg_to_ucode.c       2003-11-18 11:38:06.000000000 +0100
@@ -4742,6 +4742,14 @@ static Addr disInstr ( UCodeBlock* cb, A
       goto decode_success;
    }

+   /* CVTPD2PS -- convert one doubles to floats. */
+   if (sz == 2 &&
+       insn[0] == 0x0F && insn[1] == 0x5A) {
+      eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+2, 16, "cvtpd2ps",
+                                 0x66, insn[0], insn[1] );
+      goto decode_success;
+   }
+
    /* SQRTPD: square root of packed double. */
    if (sz == 2
        && insn[0] == 0x0F && insn[1] == 0x51) {
==================================================

Cheers,
Josef