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/* -*- mode: C; c-basic-offset: 3; -*- */
/*
This file is part of MemCheck, a heavyweight Valgrind tool for
detecting memory errors.
Copyright (C) 2012-2017 Florian Krohm
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, see <http://www.gnu.org/licenses/>.
The GNU General Public License is contained in the file COPYING.
*/
#include <stdio.h> // fprintf
#include <stdlib.h> // exit
#include <assert.h> // assert
#if defined(__APPLE__)
#include <machine/endian.h>
#define __BYTE_ORDER BYTE_ORDER
#define __LITTLE_ENDIAN LITTLE_ENDIAN
#elif defined(__sun)
#define __LITTLE_ENDIAN 1234
#define __BIG_ENDIAN 4321
# if defined(_LITTLE_ENDIAN)
# define __BYTE_ORDER __LITTLE_ENDIAN
# else
# define __BYTE_ORDER __BIG_ENDIAN
# endif
#elif defined(__linux__)
#include <endian.h>
#else
#define __BYTE_ORDER BYTE_ORDER
#define __LITTLE_ENDIAN LITTLE_ENDIAN
#include <sys/endian.h>
#endif
#include <inttypes.h>
#include "vtest.h"
#include "memcheck.h" // VALGRIND_MAKE_MEM_DEFINED
/* Something bad happened. Cannot continue. */
void __attribute__((noreturn))
panic(const char *string)
{
fprintf(stderr, "*** OOPS: %s\n", string);
exit(1);
}
/* Issue a complaint because the V-bits of the result of an operation
differ from what was expected. */
void
complain(const irop_t *op, const test_data_t *data, vbits_t expected)
{
fprintf(stderr, "*** Incorrect result for operator %s\n", op->name);
int num_operands = get_num_operands(op->op);
for (unsigned i = 0; i < num_operands; ++i) {
fprintf(stderr, " opnd %u: ", i);
print_opnd(stderr, &data->opnds[i]);
fprintf(stderr, "\n");
}
fprintf(stderr, " result: ");
print_opnd(stderr, &data->result);
fprintf(stderr, "\n");
fprintf(stderr, " expect: vbits = ");
print_vbits(stderr, expected);
fprintf(stderr, "\n");
}
static void
print_value(FILE *fp, value_t val, unsigned num_bits)
{
switch (num_bits) {
case 1: fprintf(fp, "%02x", val.u8); break;
case 8: fprintf(fp, "%02x", val.u8); break;
case 16: fprintf(fp, "%04x", val.u16); break;
case 32: fprintf(fp, "%08x", val.u32); break;
case 64: fprintf(fp, "%016"PRIx64, val.u64); break;
case 128:
if (__BYTE_ORDER == __LITTLE_ENDIAN) {
fprintf(fp, "%016"PRIx64, val.u128[1]);
fprintf(fp, "%016"PRIx64, val.u128[0]);
} else {
fprintf(fp, "%016"PRIx64, val.u128[0]);
fprintf(fp, "%016"PRIx64, val.u128[1]);
}
break;
case 256:
if (__BYTE_ORDER == __LITTLE_ENDIAN) {
fprintf(fp, "%016"PRIx64, val.u256[3]);
fprintf(fp, "%016"PRIx64, val.u256[2]);
fprintf(fp, "%016"PRIx64, val.u256[1]);
fprintf(fp, "%016"PRIx64, val.u256[0]);
} else {
fprintf(fp, "%016"PRIx64, val.u256[0]);
fprintf(fp, "%016"PRIx64, val.u256[1]);
fprintf(fp, "%016"PRIx64, val.u256[2]);
fprintf(fp, "%016"PRIx64, val.u256[3]);
}
break;
default:
panic(__func__);
}
}
void
print_opnd(FILE *fp, const opnd_t *opnd)
{
fprintf(fp, "vbits = ");
print_vbits(fp, opnd->vbits);
/* The value itself might be partially or fully undefined, so take a
copy, paint the copy as defined, and print the copied value. This is
so as to avoid error messages from Memcheck, which are correct, but
confusing. */
volatile value_t value_copy = opnd->value;
VALGRIND_MAKE_MEM_DEFINED(&value_copy, sizeof(value_copy));
fprintf(fp, " value = ");
print_value(fp, value_copy, opnd->vbits.num_bits);
}
static int
is_floating_point_type(IRType type)
{
switch (type) {
case Ity_F32:
case Ity_F64:
case Ity_F128:
case Ity_D32:
case Ity_D64:
case Ity_D128:
return 1;
default:
return 0;
}
}
int
is_floating_point_op_with_rounding_mode(IROp op)
{
IRType t_dst, t_arg1, t_arg2, t_arg3, t_arg4;
typeof_primop(op, &t_dst, &t_arg1, &t_arg2, &t_arg3, &t_arg4);
// A unary operator cannot have a rounding mode
if (t_arg2 == Ity_INVALID) return 0;
if (is_floating_point_type(t_dst) ||
is_floating_point_type(t_arg1) ||
is_floating_point_type(t_arg2) ||
is_floating_point_type(t_arg3) ||
is_floating_point_type(t_arg4)) {
// Rounding mode, if present, is the 1st operand
return t_arg1 == Ity_I32;
}
return 0;
}
/* Return the number of operands for which input values can
be freely chosen. For floating point ops, the rounding mode
is not counted here, as it is restricted. */
int
get_num_operands(IROp op)
{
IRType unused, t1, t2, t3, t4;
typeof_primop(op, &unused, &t1, &t2, &t3, &t4);
int num_operands = 4;
if (t4 == Ity_INVALID) num_operands = 3;
if (t3 == Ity_INVALID) num_operands = 2;
if (t2 == Ity_INVALID) num_operands = 1;
if (is_floating_point_op_with_rounding_mode(op))
-- num_operands;
return num_operands;
}
unsigned
sizeof_irtype(IRType ty)
{
return sizeofIRType(ty);
}
void
typeof_primop(IROp op, IRType *t_dst, IRType *t_arg1, IRType *t_arg2,
IRType *t_arg3, IRType *t_arg4)
{
return typeOfPrimop(op, t_dst, t_arg1, t_arg2, t_arg3, t_arg4);
}
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