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vr_main.c
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/*--------------------------------------------------------------------*/
/*--- Verrou: a FPU instrumentation tool. vr_main.c ---*/
/*--------------------------------------------------------------------*/
/*
This file is part of Verrou, a FPU instrumentation tool.
Copyright (C) 2014-2016
F. Févotte <[email protected]>
B. Lathuilière <[email protected]>
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307, USA.
The GNU General Public License is contained in the file COPYING.
*/
#include "vr_main.h"
#include "float.h"
#include "pub_tool_libcfile.h"
//#pragma STDC FENV_ACCESS ON
Vr_State vr;
struct interflop_backend_interface_t backend_verrou;
void* backend_verrou_context;
struct interflop_backend_interface_t backend_mcaquad;
void* backend_mcaquad_context;
VgFile * vr_outCancellationFile;
extern int CHECK_C;
// * Floating-point operations counter
// ** Operation categories
// *** Operation type
static const HChar* vr_ppOp (Vr_Op op) {
switch (op) {
case VR_OP_ADD:
return "add";
case VR_OP_SUB:
return "sub";
case VR_OP_MUL:
return "mul";
case VR_OP_DIV:
return "div";
case VR_OP_MADD:
return "mAdd";
case VR_OP_MSUB:
return "mSub";
case VR_OP_CMP:
return "cmp";
case VR_OP_CONV:
return "conv";
case VR_OP_MAX:
return "max";
case VR_OP_MIN:
return "min";
case VR_OP:
break;
}
return "unknown";
}
// *** Operation precision
typedef enum {
VR_PREC_FLT, // Single
VR_PREC_DBL, // Double
VR_PREC_DBL_TO_FLT,
VR_PREC_FLT_TO_DBL,
VR_PREC_DBL_TO_INT,
VR_PREC_DBL_TO_SHT,
VR_PREC_FLT_TO_INT,
VR_PREC_FLT_TO_SHT,
VR_PREC
} Vr_Prec;
static const HChar* vr_ppPrec (Vr_Prec prec) {
switch (prec) {
case VR_PREC_FLT:
return "flt";
case VR_PREC_DBL:
return "dbl";
case VR_PREC_DBL_TO_FLT:
return "dbl=>flt";
case VR_PREC_FLT_TO_DBL:
return "flt=>dbl";
case VR_PREC_DBL_TO_INT:
return "dbl=>int";
case VR_PREC_FLT_TO_INT:
return "flt=>int";
case VR_PREC_DBL_TO_SHT:
return "dbl=>sht";
case VR_PREC_FLT_TO_SHT:
return "flt=>sht";
case VR_PREC:
break;
}
return "unknown";
}
// *** Vector operations
typedef enum {
VR_VEC_SCAL, // Scalar operation
VR_VEC_LLO, // Vector operation, lowest lane only
VR_VEC_FULL2, // Vector operation
VR_VEC_FULL4, // Vector operation
VR_VEC_FULL8, // Vector operation
VR_VEC
} Vr_Vec;
static const HChar* vr_ppVec (Vr_Vec vec) {
switch (vec) {
case VR_VEC_SCAL:
return "scal";
case VR_VEC_LLO:
return "llo ";
case VR_VEC_FULL2:
return "vec2 ";
case VR_VEC_FULL4:
return "vec4 ";
case VR_VEC_FULL8:
return "vec8 ";
default:
return "unknown";
}
}
// ** Counter handling
static ULong vr_opCount[VR_OP][VR_PREC][VR_VEC][VR_INSTR];
static VG_REGPARM(2) void vr_incOpCount (ULong* counter, SizeT increment) {
counter[vr.instrument] += increment;
}
static VG_REGPARM(2) void vr_incUnstrumentedOpCount (ULong* counter, SizeT increment) {
counter[VR_INSTR_OFF] += increment;
}
static void vr_countOp (IRSB* sb, Vr_Op op, Vr_Prec prec, Vr_Vec vec, Bool instr) {
if(!vr.count){
return;
}
IRExpr** argv;
IRDirty* di;
SizeT increment = 1;
if (vec == VR_VEC_FULL2) {
increment =2;
}
if(vec == VR_VEC_FULL4) {
increment =4;
}
if(vec == VR_VEC_FULL8) {
increment =8;
}
if(instr){
argv = mkIRExprVec_2 (mkIRExpr_HWord ((HWord)&vr_opCount[op][prec][vec]),
mkIRExpr_HWord (increment));
di = unsafeIRDirty_0_N( 2,
"vr_incOpCount",
VG_(fnptr_to_fnentry)( &vr_incOpCount ),
argv);
}else{
argv = mkIRExprVec_2 (mkIRExpr_HWord ((HWord)&vr_opCount[op][prec][vec]),
mkIRExpr_HWord (increment));
di = unsafeIRDirty_0_N( 2,
"vr_incUnstrumentedOpCount",
VG_(fnptr_to_fnentry)( &vr_incUnstrumentedOpCount ),
argv);
}
addStmtToIRSB (sb, IRStmt_Dirty (di));
}
static unsigned int vr_frac (ULong a, ULong b) {
unsigned int q = (100*a)/(a+b);
if (100*a - (a+b)*q > (a+b)/2) {q++;}
return q;
}
void vr_ppOpCount (void) {
if(!vr.count)return ;
Vr_Op op;
Vr_Prec prec;
Vr_Vec vec;
VG_(umsg)(" ---------------------------------------------------------------------\n");
VG_(umsg)(" Operation Instruction count\n");
VG_(umsg)(" `- Precision\n");
VG_(umsg)(" `- Vectorization Total Instrumented\n");
VG_(umsg)(" ---------------------------------------------------------------------\n");
for (op = 0 ; op<VR_OP ; ++op) {
ULong countOp[VR_INSTR];
countOp[VR_INSTR_ON] = 0;
countOp[VR_INSTR_OFF] = 0;
for (prec = 0 ; prec < VR_PREC ; ++prec) {
for (vec = 0 ; vec < VR_VEC ; ++vec) {
countOp[VR_INSTR_ON] += vr_opCount[op][prec][vec][VR_INSTR_ON];
countOp[VR_INSTR_OFF] += vr_opCount[op][prec][vec][VR_INSTR_OFF];
}
}
if (countOp[VR_INSTR_ON] + countOp[VR_INSTR_OFF] > 0) {
VG_(umsg)(" %-6s %15llu %15llu (%3u%%)\n",
vr_ppOp(op),
countOp[VR_INSTR_ON] + countOp[VR_INSTR_OFF],
countOp[VR_INSTR_ON],
vr_frac (countOp[VR_INSTR_ON], countOp[VR_INSTR_OFF]));
for (prec = 0 ; prec<VR_PREC ; ++prec) {
ULong countPrec[VR_INSTR];
countPrec[VR_INSTR_ON] = 0;
countPrec[VR_INSTR_OFF] = 0;
for (vec = 0 ; vec<VR_VEC ; ++vec) {
countPrec[VR_INSTR_ON] += vr_opCount[op][prec][vec][VR_INSTR_ON];
countPrec[VR_INSTR_OFF] += vr_opCount[op][prec][vec][VR_INSTR_OFF];
}
if (countPrec[VR_INSTR_ON] + countPrec[VR_INSTR_OFF] > 0) {
VG_(umsg)(" `- %-8s %15llu %15llu (%3u%%)\n",
vr_ppPrec(prec),
countPrec[VR_INSTR_ON] + countPrec[VR_INSTR_OFF],
countPrec[VR_INSTR_ON],
vr_frac (countPrec[VR_INSTR_ON], countPrec[VR_INSTR_OFF]));
for (vec = 0 ; vec<VR_VEC ; ++vec) {
ULong * count = vr_opCount[op][prec][vec];
if (count[VR_INSTR_ON] + count[VR_INSTR_OFF] > 0) {
VG_(umsg)(" `- %-6s %15llu %15llu (%3u%%)\n",
vr_ppVec(vec),
vr_opCount[op][prec][vec][VR_INSTR_ON] + vr_opCount[op][prec][vec][VR_INSTR_OFF],
vr_opCount[op][prec][vec][VR_INSTR_ON],
vr_frac (vr_opCount[op][prec][vec][VR_INSTR_ON], vr_opCount[op][prec][vec][VR_INSTR_OFF]));
}
}
}
}
VG_(umsg)(" ---------------------------------------------------------------------\n");
}
}
}
// * Floating point operations overload
// ** Overloaded operators
#include "vr_interp_operator_impl.h"
#include "vr_generated_from_templates.h"
// *** Helpers
/* Return the Lowest Lane of a given packed temporary register */
static IRExpr* vr_getLLFloat (IRSB* sb, IRExpr* expr) {
IRTemp tmp = newIRTemp (sb->tyenv, Ity_I32);
addStmtToIRSB (sb, IRStmt_WrTmp (tmp, IRExpr_Unop (Iop_V128to32, expr)));
return IRExpr_RdTmp(tmp);
}
/* Return the Lowest Lane of a given packed temporary register */
static IRExpr* vr_getLLDouble (IRSB* sb, IRExpr* expr) {
IRTemp tmp = newIRTemp (sb->tyenv, Ity_I64);
addStmtToIRSB (sb, IRStmt_WrTmp (tmp, IRExpr_Unop (Iop_V128to64, expr)));
return IRExpr_RdTmp(tmp);
}
/* Return the Highest Lane of a given packed temporary register */
static IRExpr* vr_getHLDouble (IRSB* sb, IRExpr* expr) {
IRTemp tmp = newIRTemp (sb->tyenv, Ity_I64);
addStmtToIRSB (sb, IRStmt_WrTmp (tmp, IRExpr_Unop (Iop_V128HIto64, expr)));
return IRExpr_RdTmp(tmp);
}
/* Return the Highest Lane of a given packed temporary register */
static void vr_getTabArgAVX (IRSB* sb, IRExpr* expr, IRExpr** tab) {
IRTemp tmp0 = newIRTemp (sb->tyenv, Ity_I64);
IRTemp tmp1 = newIRTemp (sb->tyenv, Ity_I64);
IRTemp tmp2 = newIRTemp (sb->tyenv, Ity_I64);
IRTemp tmp3 = newIRTemp (sb->tyenv, Ity_I64);
addStmtToIRSB (sb, IRStmt_WrTmp (tmp0, IRExpr_Unop (Iop_V256to64_0, expr)));
addStmtToIRSB (sb, IRStmt_WrTmp (tmp1, IRExpr_Unop (Iop_V256to64_1, expr)));
addStmtToIRSB (sb, IRStmt_WrTmp (tmp2, IRExpr_Unop (Iop_V256to64_2, expr)));
addStmtToIRSB (sb, IRStmt_WrTmp (tmp3, IRExpr_Unop (Iop_V256to64_3, expr)));
tab[0]=IRExpr_RdTmp(tmp0);
tab[1]=IRExpr_RdTmp(tmp1);
tab[2]=IRExpr_RdTmp(tmp2);
tab[3]=IRExpr_RdTmp(tmp3);
}
static IRExpr* vr_I32toI64 (IRSB* sb, IRExpr* expr) {
IRTemp tmp = newIRTemp (sb->tyenv, Ity_I64);
addStmtToIRSB (sb, IRStmt_WrTmp (tmp, IRExpr_Unop (Iop_32Uto64, expr)));
return IRExpr_RdTmp (tmp);
}
static IRExpr* vr_I64toI32 (IRSB* sb, IRExpr* expr) {
IRTemp tmp = newIRTemp (sb->tyenv, Ity_I32);
addStmtToIRSB (sb, IRStmt_WrTmp (tmp, IRExpr_Unop (Iop_64to32, expr)));
return IRExpr_RdTmp (tmp);
}
static IRExpr* vr_F64toI64 (IRSB* sb, IRExpr* expr) {
IRTemp tmp = newIRTemp (sb->tyenv, Ity_I64);
addStmtToIRSB (sb, IRStmt_WrTmp (tmp, IRExpr_Unop (Iop_ReinterpF64asI64, expr)));
return IRExpr_RdTmp (tmp);
}
static IRExpr* vr_F32toI64 (IRSB* sb, IRExpr* expr) {
IRTemp tmp = newIRTemp (sb->tyenv, Ity_I32);
addStmtToIRSB (sb, IRStmt_WrTmp (tmp, IRExpr_Unop (Iop_ReinterpF32asI32, expr)));
return vr_I32toI64(sb, IRExpr_RdTmp (tmp));
}
/* Get the operation from an expression
return False if the expression is not an operation
*/
static Bool vr_getOp (const IRExpr * expr, /*OUT*/ IROp * op) {
switch (expr->tag) {
case Iex_Unop:
*op = expr->Iex.Unop.op;
break;
case Iex_Binop:
*op = expr->Iex.Binop.op;
break;
case Iex_Triop:
*op = expr->Iex.Triop.details->op;
break;
case Iex_Qop:
*op = expr->Iex.Qop.details->op;
break;
default:
return False;
}
return True;
}
/* Replace a given binary operation by a call to a function
*/
static Bool vr_replaceBinFpOpScal (IRSB* sb, IRStmt* stmt, IRExpr* expr,
const HChar* functionName, void* function,
Vr_Op op,
Vr_Prec prec,
Vr_Vec vec) {
//instrumentation to count operation
if(vr.verbose){
IROp irop;
if (vr_getOp (expr, &irop))
vr_maybe_record_ErrorOp (VR_ERROR_SCALAR, irop);
}
if(!vr.instr_op[op] ) {
vr_countOp (sb, op, prec,vec, False);
addStmtToIRSB (sb, stmt);
return False;
}
if(!vr.instr_scalar) {
vr_countOp (sb, op, prec,vec, False);
addStmtToIRSB (sb, stmt);
return False;
}
vr_countOp (sb, op, prec,vec, True);
//conversion before call
IRExpr * arg1;
IRExpr * arg2;
arg1 = expr->Iex.Triop.details->arg2;
//shift arg is not a bug : IRRoundingMode(I32) x F64 x F64 -> F64 */
arg2 = expr->Iex.Triop.details->arg3;
IRType ity=Ity_I64; //type of call result
if (prec==VR_PREC_FLT) {
arg1=vr_F32toI64(sb,arg1);
arg2=vr_F32toI64(sb,arg2);
ity=Ity_I32;
}
if (prec==VR_PREC_DBL) {
arg1=vr_F64toI64(sb,arg1);
arg2=vr_F64toI64(sb,arg2);
}
//call
IRTemp res= newIRTemp (sb->tyenv, ity);
addStmtToIRSB (sb,
IRStmt_Dirty(unsafeIRDirty_1_N (res, 2,
functionName, VG_(fnptr_to_fnentry)(function),
mkIRExprVec_2 (arg1, arg2))));
//conversion after call
if(prec==VR_PREC_FLT){
IRExpr* conv=vr_I64toI32(sb, IRExpr_RdTmp(res ));
addStmtToIRSB (sb, IRStmt_WrTmp (stmt->Ist.WrTmp.tmp,
IRExpr_Unop (Iop_ReinterpI32asF32, conv )));
}
if(prec==VR_PREC_DBL){
addStmtToIRSB (sb, IRStmt_WrTmp (stmt->Ist.WrTmp.tmp,
IRExpr_Unop (Iop_ReinterpI64asF64, IRExpr_RdTmp(res))));
}
return True;
}
static Bool vr_replaceBinFpOpLLO_slow_safe (IRSB* sb, IRStmt* stmt, IRExpr* expr,
const HChar* functionName, void* function,
Vr_Op op,
Vr_Prec prec,
Vr_Vec vec){
//instrumentation to count operation
if(!vr.instr_op[op] ) {
vr_countOp (sb, op, prec,vec,False);
addStmtToIRSB (sb, stmt);
return False;
}
vr_countOp (sb, op, prec,vec, True);
//conversion before call
IRExpr * arg1LL=NULL;
IRExpr * arg1;
IRExpr * arg2LL;
IRType ity=Ity_I64;//type of call result
arg1 = expr->Iex.Binop.arg1;
arg2LL = expr->Iex.Binop.arg2;
if (prec==VR_PREC_FLT) {
arg1LL = vr_getLLFloat (sb, arg1);
arg2LL = vr_getLLFloat (sb, arg2LL);
arg1LL = vr_I32toI64 (sb, arg1LL);
arg2LL = vr_I32toI64 (sb, arg2LL);
ity=Ity_I32;
}
if (prec==VR_PREC_DBL) {
arg1LL = vr_getLLDouble (sb, arg1);
arg2LL = vr_getLLDouble (sb, arg2LL);
}
//call
IRTemp res=newIRTemp (sb->tyenv, ity);
addStmtToIRSB (sb,
IRStmt_Dirty(unsafeIRDirty_1_N (res, 2,
functionName, VG_(fnptr_to_fnentry)(function),
mkIRExprVec_2 (arg1LL, arg2LL))));
//update after call
if (prec==VR_PREC_FLT){
addStmtToIRSB (sb, IRStmt_WrTmp (stmt->Ist.WrTmp.tmp,
IRExpr_Binop (Iop_SetV128lo32, arg1,IRExpr_RdTmp(res))));
}
if (prec==VR_PREC_DBL){
addStmtToIRSB (sb, IRStmt_WrTmp (stmt->Ist.WrTmp.tmp,
IRExpr_Binop (Iop_SetV128lo64,arg1,IRExpr_RdTmp(res))));
}
return True;
}
static Bool vr_replaceBinFpOpLLO_fast_unsafe (IRSB* sb, IRStmt* stmt, IRExpr* expr,
const HChar* functionName, void* function,
Vr_Op op,
Vr_Prec prec,
Vr_Vec vec){
//instrumentation to count operation
if(!vr.instr_op[op] ) {
vr_countOp (sb, op, prec,vec,False);
addStmtToIRSB (sb, stmt);
return False;
}
vr_countOp (sb, op, prec,vec, True);
//conversion before call
IRExpr * arg1;
IRExpr * arg2;
IRType ity=Ity_I64;//type of call result
arg1 = expr->Iex.Binop.arg1;
arg2 = expr->Iex.Binop.arg2;
if (prec==VR_PREC_FLT) {
arg1 = vr_getLLFloat (sb, arg1);
arg2 = vr_getLLFloat (sb, arg2);
arg1 = vr_I32toI64 (sb, arg1);
arg2 = vr_I32toI64 (sb, arg2);
ity=Ity_I32;
}
if (prec==VR_PREC_DBL) {
arg1 = vr_getLLDouble (sb, arg1);
arg2 = vr_getLLDouble (sb, arg2);
}
//call
IRTemp res=newIRTemp (sb->tyenv, ity);
addStmtToIRSB (sb,
IRStmt_Dirty(unsafeIRDirty_1_N (res, 2,
functionName, VG_(fnptr_to_fnentry)(function),
mkIRExprVec_2 (arg1, arg2))));
//update after call
IROp opReg;
if (prec==VR_PREC_FLT) opReg = Iop_32UtoV128;
if (prec==VR_PREC_DBL) opReg = Iop_64UtoV128;
addStmtToIRSB (sb, IRStmt_WrTmp (stmt->Ist.WrTmp.tmp,
IRExpr_Unop (opReg, IRExpr_RdTmp(res))));
return True;
}
static Bool vr_replaceBinFpOpLLO(IRSB* sb, IRStmt* stmt, IRExpr* expr,
const HChar* functionName, void* function,
Vr_Op op,
Vr_Prec prec,
Vr_Vec vec){
if(vr.unsafe_llo_optim){
return vr_replaceBinFpOpLLO_fast_unsafe(sb,stmt,expr,functionName,function,op,prec,vec);
}else{
return vr_replaceBinFpOpLLO_slow_safe(sb,stmt,expr,functionName,function,op,prec,vec);
}
}
static Bool vr_replaceBinFullSSE (IRSB* sb, IRStmt* stmt, IRExpr* expr,
const HChar* functionName, void* function,
Vr_Op op,
Vr_Prec prec,
Vr_Vec vec) {
if(!vr.instr_op[op] ) {
vr_countOp (sb, op, prec,vec, False);
addStmtToIRSB (sb, stmt);
return False;
}
vr_countOp (sb, op, prec,vec, True);
if(!(
(vec==VR_VEC_FULL2 && prec==VR_PREC_DBL)
||
(vec==VR_VEC_FULL4 && prec==VR_PREC_FLT)
)){
VG_(tool_panic) ( "vr_replaceBinFullSSE requires SSE instructions... \n");
}
//conversion before call
IRExpr * arg1 = expr->Iex.Triop.details->arg2;
IRExpr * arg2 = expr->Iex.Triop.details->arg3;
IRExpr *arg1Lo=vr_getLLDouble (sb, arg1);
IRExpr *arg1Hi=vr_getHLDouble (sb, arg1);
IRExpr *arg2Lo=vr_getLLDouble (sb, arg2);
IRExpr *arg2Hi=vr_getHLDouble (sb, arg2);
IRTemp res= newIRTemp (sb->tyenv, Ity_V128);
//call
addStmtToIRSB (sb,
IRStmt_Dirty(unsafeIRDirty_1_N (res, 3,
"", VG_(fnptr_to_fnentry)(function),
mkIRExprVec_5 (IRExpr_VECRET(),
arg1Hi,arg1Lo,
arg2Hi,arg2Lo))));
//conversion after call
addStmtToIRSB (sb, IRStmt_WrTmp (stmt->Ist.WrTmp.tmp, IRExpr_RdTmp(res)));
return True;
}
static Bool vr_replaceBinFullAVX (IRSB* sb, IRStmt* stmt, IRExpr* expr,
const HChar* functionName, void* function,
Vr_Op op,
Vr_Prec prec,
Vr_Vec vec) {
if(!vr.instr_op[op] ) {
vr_countOp (sb, op, prec,vec,False);
addStmtToIRSB (sb, stmt);
return False;
}
vr_countOp (sb, op, prec,vec,True);
if(!(
(vec==VR_VEC_FULL4 && prec==VR_PREC_DBL)
||
(vec==VR_VEC_FULL8 && prec==VR_PREC_FLT)
)){
VG_(tool_panic) ( "vr_replaceBinFullAVX requires AVX instructions... \n");
}
//conversion before call
IRExpr * arg1 = expr->Iex.Triop.details->arg2;
IRExpr * arg2 = expr->Iex.Triop.details->arg3;
IRExpr* arg1Tab[4];
IRExpr* arg2Tab[4];
vr_getTabArgAVX (sb, arg1, arg1Tab);
vr_getTabArgAVX (sb, arg2, arg2Tab);
IRTemp res= newIRTemp (sb->tyenv, Ity_V256);
//call
/* 1 call avx
addStmtToIRSB (sb,
IRStmt_Dirty(unsafeIRDirty_1_N (res, 1,
functionName, VG_(fnptr_to_fnentry)(function),
mkIRExprVec_9 (IRExpr_VECRET(),
arg1Tab[0],arg1Tab[1], arg1Tab[2],arg1Tab[3],
arg2Tab[0],arg2Tab[1], arg2Tab[2],arg2Tab[3]
)
)));*/
if( prec==VR_PREC_DBL){
addStmtToIRSB (sb,
IRStmt_Dirty(unsafeIRDirty_0_N (1,
"vr_AvxDoubleCopyFirstArg", VG_(fnptr_to_fnentry)(&vr_AvxDoubleCopyFirstArg),
mkIRExprVec_4 (arg1Tab[0],arg1Tab[1], arg1Tab[2],arg1Tab[3])
)));
}else if(prec==VR_PREC_FLT){
addStmtToIRSB (sb,
IRStmt_Dirty(unsafeIRDirty_0_N (1,
"vr_AvxFloatCopyFirstArg", VG_(fnptr_to_fnentry)(&vr_AvxFloatCopyFirstArg),
mkIRExprVec_4 (arg1Tab[0],arg1Tab[1], arg1Tab[2],arg1Tab[3])
)));
}
addStmtToIRSB (sb,
IRStmt_Dirty(unsafeIRDirty_1_N (res, 1,
functionName, VG_(fnptr_to_fnentry)(function),
mkIRExprVec_5 (IRExpr_VECRET(),
arg2Tab[0],arg2Tab[1], arg2Tab[2],arg2Tab[3]
)
)));
//conversion after call
addStmtToIRSB (sb, IRStmt_WrTmp (stmt->Ist.WrTmp.tmp, IRExpr_RdTmp(res)));
return True;
}
static Bool vr_replaceFMA (IRSB* sb, IRStmt* stmt, IRExpr* expr,
const HChar* functionName, void* function,
Vr_Op Op,
Vr_Prec Prec) {
if(!vr.instr_op[Op] ) {
vr_countOp (sb, Op, Prec, VR_VEC_LLO,False);
addStmtToIRSB (sb, stmt);
return False;
}
vr_countOp (sb, Op, Prec, VR_VEC_LLO,True);
#ifdef USE_VERROU_FMA
// IRExpr * arg1 = expr->Iex.Qop.details->arg1; Rounding mode
IRExpr * arg2 = expr->Iex.Qop.details->arg2;
IRExpr * arg3 = expr->Iex.Qop.details->arg3;
IRExpr * arg4 = expr->Iex.Qop.details->arg4;
IRTemp res = newIRTemp (sb->tyenv, Ity_I64);
if(Prec== VR_PREC_DBL){
arg2=vr_F64toI64(sb,arg2);
arg3=vr_F64toI64(sb,arg3);
arg4=vr_F64toI64(sb,arg4);
}
if(Prec==VR_PREC_FLT){
arg2=vr_F32toI64(sb,arg2);
arg3=vr_F32toI64(sb,arg3);
arg4=vr_F32toI64(sb,arg4);
}
IRDirty* id= unsafeIRDirty_1_N (res, 3,
functionName, VG_(fnptr_to_fnentry)(function),
mkIRExprVec_3 (arg2, arg3,arg4));
addStmtToIRSB (sb,IRStmt_Dirty(id));
if(Prec==VR_PREC_FLT){
IRExpr* conv=vr_I64toI32(sb, IRExpr_RdTmp(res ));
addStmtToIRSB (sb, IRStmt_WrTmp (stmt->Ist.WrTmp.tmp,
IRExpr_Unop (Iop_ReinterpI32asF32, conv )));
}
if(Prec==VR_PREC_DBL){
addStmtToIRSB (sb, IRStmt_WrTmp (stmt->Ist.WrTmp.tmp,
IRExpr_Unop (Iop_ReinterpI64asF64, IRExpr_RdTmp(res))));
}
return True;
#else //USE_VERROU_FMA
//should not happed
VG_(tool_panic) ( "Verrou needs to be compiled with FMA support \n");
#endif //USE_VERROU_FMA
}
static Bool vr_replaceCast (IRSB* sb, IRStmt* stmt, IRExpr* expr,
const HChar* functionName, void* function,
Vr_Op Op,
Vr_Prec Prec) {
if(!vr.instr_op[Op] ) {
vr_countOp (sb, Op, Prec, VR_VEC_SCAL,False);
addStmtToIRSB (sb, stmt);
return False;
}
vr_countOp (sb, Op, Prec, VR_VEC_SCAL,True);
IRExpr * arg2 = expr->Iex.Binop.arg2;
IRTemp res = newIRTemp (sb->tyenv, Ity_I64);
arg2=vr_F64toI64(sb,arg2);
IRDirty* id= unsafeIRDirty_1_N (res, 1,
functionName, VG_(fnptr_to_fnentry)(function),
mkIRExprVec_1 (arg2));
addStmtToIRSB (sb,IRStmt_Dirty(id));
IRExpr* conv=vr_I64toI32(sb, IRExpr_RdTmp(res ));
addStmtToIRSB (sb, IRStmt_WrTmp (stmt->Ist.WrTmp.tmp,
IRExpr_Unop (Iop_ReinterpI32asF32, conv )));
return True;
}
static Bool vr_instrumentOp (IRSB* sb, IRStmt* stmt, IRExpr * expr, IROp op, vr_backend_name_t bc) {
if(vr.backend==vr_verrou){
#define bcName(OP) "vr_verrou"#OP, vr_verrou##OP
#include "vr_instrumentOp_impl.h"
#undef bcName
}
if(vr.backend==vr_mcaquad){
#define bcName(OP) "vr_mcaquad"#OP, vr_mcaquad##OP
#include "vr_instrumentOp_impl.h"
#undef bcName
}
return False;
}
static Bool vr_instrumentExpr (IRSB* sb, IRStmt* stmt, IRExpr* expr) {
IROp op;
// ppIRStmt(stmt);VG_(printf)("\n");
if (vr_getOp (expr, &op)) {
return vr_instrumentOp (sb, stmt, expr, op, vr.backend);
} else {
addStmtToIRSB (sb, stmt);
return False;
}
}
// * Valgrind tool interface
static
IRSB* vr_instrument ( VgCallbackClosure* closure,
IRSB* sbIn,
const VexGuestLayout* layout,
const VexGuestExtents* vge,
const VexArchInfo* archinfo_host,
IRType gWordTy, IRType hWordTy )
{
const HChar * fnname;
const HChar * objname;
if (vr_excludeIRSB (&fnname, &objname))
return sbIn;
UInt i;
IRSB* sbOut = deepCopyIRSBExceptStmts(sbIn);
Bool includeSource = True;
Bool doLineContainFloat=False;
Bool doIRSBFContainFloat=False;
const HChar *filename=NULL;
UInt linenum;
for (i=0 ; i<sbIn->stmts_used ; ++i) {
IRStmt* st = sbIn->stmts[i];
switch (st->tag) {
case Ist_IMark: {
if(vr.genIncludeSource && doLineContainFloat && filename!=NULL){
vr_includeSource_generate (&vr.includeSource, fnname, filename, linenum);
}
doLineContainFloat=False;
Addr addr;
addr = st->Ist.IMark.addr;
// filename[0] = 0;
VG_(get_filename_linenum)(VG_(current_DiEpoch)(),
addr,
&filename,
NULL,
&linenum);
if(!vr.genIncludeSource){
includeSource = vr_includeSource (&vr.includeSource, fnname, filename, linenum);
}
}
break;
case Ist_WrTmp:
if (includeSource) {
Bool doInstrContainFloat= vr_instrumentExpr (sbOut, st, st->Ist.WrTmp.data);
doLineContainFloat=doLineContainFloat || doInstrContainFloat;
doIRSBFContainFloat=doIRSBFContainFloat || doInstrContainFloat;
break;
}
default:
addStmtToIRSB (sbOut, sbIn->stmts[i]);
}
}
if(vr.genIncludeSource && doLineContainFloat &&filename !=NULL){
vr_includeSource_generate (&vr.includeSource, fnname, filename, linenum);
}
if(vr.genExclude && doIRSBFContainFloat){
vr_excludeIRSB_generate (&fnname, &objname);
}
return sbOut;
}
static void vr_fini(Int exitcode)
{
if (CHECK_C != 0) {
VG_(fclose)(vr_outCancellationFile);
}
vr_ppOpCount ();
interflop_verrou_finalyze(backend_verrou_context);
interflop_mcaquad_finalyze(backend_mcaquad_context);
if (vr.genExclude) {
vr_dumpExcludeList(vr.exclude, vr.genExcludeUntil,
vr.excludeFile);
}
if (vr.genIncludeSource) {
vr_dumpIncludeSourceList (vr.includeSource, vr.genIncludeSourceUntil,
vr.includeSourceFile);
}
vr_freeExcludeList (vr.exclude);
vr_freeIncludeSourceList (vr.includeSource);
VG_(free)(vr.excludeFile);
// VG_(free)(vr.genAbove);
}
void vr_cancellation_handler(int cancelled ){
VG_(fprintf)(vr_outCancellationFile, "C %d\n", cancelled);
}
static void print_op(int nbArg, const char* name, const double* args,const double* res){
if(nbArg==1){
VG_(umsg)("%s : %f => %f\n", name,args[0],*res);
}
if(nbArg==2){
VG_(umsg)("%s : %f, %f => %f\n", name,args[0], args[1],*res);
}
if(nbArg==3){
VG_(umsg)("%s : %f, %f, %f => %f\n", name, args[0], args[1], args[2], *res);
}
}
static void vr_post_clo_init(void)
{
// Values coming from the environment take precedence over CLOs
vr_env_clo("VERROU_ROUNDING_MODE", "--rounding-mode");
vr_env_clo("VERROU_INSTR_ATSTART", "--instr-atstart");
vr_env_clo("VERROU_EXCLUDE", "--exclude");
vr_env_clo("VERROU_GEN_EXCLUDE", "--gen-exclude");
// vr_env_clo("VERROU_GEN_ABOVE", "--gen-above");
vr_env_clo("VERROU_SOURCE", "--source");
vr_env_clo("VERROU_GEN_SOURCE", "--gen-source");
if (vr.genExclude) {
vr.genExcludeUntil = vr.exclude;
}
// if (vr.genAbove == NULL) {
// vr.genAbove = VG_(strdup)("vr.post_clo_init.gen-above", "main");
// }
//Verrou Backend Initilisation
backend_verrou=interflop_verrou_init(&backend_verrou_context);
verrou_set_panic_handler(&VG_(tool_panic));
verrou_set_nan_handler(&vr_handle_NaN);
verrou_set_debug_print_op(&print_op);//Use only verrou backend is configured to use it
VG_(umsg)("Backend %s : %s\n", interflop_verrou_get_backend_name() , interflop_verrou_get_backend_version() );
interflop_verrou_configure(vr.roundingMode,backend_verrou_context);
//Random Seed initialisation
if(( (vr.roundingMode== VR_RANDOM) || (vr.roundingMode== VR_AVERAGE))){
if(vr.firstSeed==(unsigned int )(-1)){
struct vki_timeval now;
VG_(gettimeofday)(&now, NULL);
unsigned int pid = VG_(getpid)();
vr.firstSeed = now.tv_usec + pid;
}
VG_(umsg)("First seed : %u\n", vr.firstSeed);
verrou_set_seed (vr.firstSeed);
}
/*Init outfile cancellation*/
if (CHECK_C != 0) {
vr_outCancellationFile = VG_(fopen)("vr.log",
VKI_O_WRONLY | VKI_O_CREAT | VKI_O_TRUNC,
VKI_S_IRUSR|VKI_S_IWUSR|VKI_S_IRGRP|VKI_S_IROTH);
verrou_set_cancellation_handler(&vr_cancellation_handler);
}
/*configuration of MCA backend*/
backend_mcaquad=interflop_mcaquad_init(&backend_mcaquad_context);
mcaquad_set_panic_handler(&VG_(tool_panic));
VG_(umsg)("Backend %s : %s\n", interflop_mcaquad_get_backend_name(), interflop_mcaquad_get_backend_version() );
mcaquad_conf_t mca_quad_conf;
mca_quad_conf.precision_float=vr.mca_precision;
mca_quad_conf.precision_double=vr.mca_precision;
mca_quad_conf.mode=vr.mca_mode;
interflop_mcaquad_configure(mca_quad_conf, backend_mcaquad_context);
mcaquad_set_seed(vr.firstSeed);
/*If no operation selected the default is all*/
Bool someThingInstr=False;
int opIt;
for(opIt=0; opIt< VR_OP ;opIt++){