371 lines
10 KiB
C
371 lines
10 KiB
C
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/*
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* Copyright(c) 2020-2021 Qualcomm Innovation Center, Inc. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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* This test checks various FP operations performed on Hexagon
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*/
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#include <stdio.h>
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const int FPINVF_BIT = 1; /* Invalid */
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const int FPINVF = 1 << FPINVF_BIT;
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const int FPDBZF_BIT = 2; /* Divide by zero */
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const int FPDBZF = 1 << FPDBZF_BIT;
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const int FPOVFF_BIT = 3; /* Overflow */
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const int FPOVFF = 1 << FPOVFF_BIT;
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const int FPUNFF_BIT = 4; /* Underflow */
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const int FPUNFF = 1 << FPUNFF_BIT;
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const int FPINPF_BIT = 5; /* Inexact */
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const int FPINPF = 1 << FPINPF_BIT;
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const int SF_ZERO = 0x00000000;
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const int SF_NaN = 0x7fc00000;
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const int SF_NaN_special = 0x7f800001;
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const int SF_ANY = 0x3f800000;
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const int SF_HEX_NAN = 0xffffffff;
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const long long DF_NaN = 0x7ff8000000000000ULL;
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const long long DF_ANY = 0x3f80000000000000ULL;
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const long long DF_HEX_NAN = 0xffffffffffffffffULL;
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int err;
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#define CLEAR_FPSTATUS \
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"r2 = usr\n\t" \
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"r2 = clrbit(r2, #1)\n\t" \
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"r2 = clrbit(r2, #2)\n\t" \
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"r2 = clrbit(r2, #3)\n\t" \
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"r2 = clrbit(r2, #4)\n\t" \
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"r2 = clrbit(r2, #5)\n\t" \
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"usr = r2\n\t"
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static void check_fpstatus_bit(int usr, int expect, int flag, const char *n)
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{
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int bit = 1 << flag;
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if ((usr & bit) != (expect & bit)) {
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printf("ERROR %s: usr = %d, expect = %d\n", n,
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(usr >> flag) & 1, (expect >> flag) & 1);
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err++;
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}
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}
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static void check_fpstatus(int usr, int expect)
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{
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check_fpstatus_bit(usr, expect, FPINVF_BIT, "Invalid");
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check_fpstatus_bit(usr, expect, FPDBZF_BIT, "Div by zero");
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check_fpstatus_bit(usr, expect, FPOVFF_BIT, "Overflow");
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check_fpstatus_bit(usr, expect, FPUNFF_BIT, "Underflow");
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check_fpstatus_bit(usr, expect, FPINPF_BIT, "Inexact");
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}
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static void check32(int val, int expect)
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{
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if (val != expect) {
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printf("ERROR: 0x%x != 0x%x\n", val, expect);
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err++;
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}
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}
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static void check64(unsigned long long val, unsigned long long expect)
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{
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if (val != expect) {
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printf("ERROR: 0x%llx != 0x%llx\n", val, expect);
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err++;
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}
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}
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static void check_compare_exception(void)
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{
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int cmp;
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int usr;
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/* Check that FP compares are quiet (don't raise any execptions) */
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asm (CLEAR_FPSTATUS
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"p0 = sfcmp.eq(%2, %3)\n\t"
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"%0 = p0\n\t"
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"%1 = usr\n\t"
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: "=r"(cmp), "=r"(usr) : "r"(SF_NaN), "r"(SF_ANY)
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: "r2", "p0", "usr");
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check32(cmp, 0);
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check_fpstatus(usr, 0);
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asm (CLEAR_FPSTATUS
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"p0 = sfcmp.gt(%2, %3)\n\t"
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"%0 = p0\n\t"
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"%1 = usr\n\t"
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: "=r"(cmp), "=r"(usr) : "r"(SF_NaN), "r"(SF_ANY)
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: "r2", "p0", "usr");
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check32(cmp, 0);
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check_fpstatus(usr, 0);
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asm (CLEAR_FPSTATUS
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"p0 = sfcmp.ge(%2, %3)\n\t"
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"%0 = p0\n\t"
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"%1 = usr\n\t"
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: "=r"(cmp), "=r"(usr) : "r"(SF_NaN), "r"(SF_ANY)
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: "r2", "p0", "usr");
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check32(cmp, 0);
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check_fpstatus(usr, 0);
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asm (CLEAR_FPSTATUS
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"p0 = dfcmp.eq(%2, %3)\n\t"
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"%0 = p0\n\t"
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"%1 = usr\n\t"
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: "=r"(cmp), "=r"(usr) : "r"(DF_NaN), "r"(DF_ANY)
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: "r2", "p0", "usr");
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check32(cmp, 0);
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check_fpstatus(usr, 0);
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asm (CLEAR_FPSTATUS
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"p0 = dfcmp.gt(%2, %3)\n\t"
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"%0 = p0\n\t"
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"%1 = usr\n\t"
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: "=r"(cmp), "=r"(usr) : "r"(DF_NaN), "r"(DF_ANY)
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: "r2", "p0", "usr");
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check32(cmp, 0);
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check_fpstatus(usr, 0);
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asm (CLEAR_FPSTATUS
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"p0 = dfcmp.ge(%2, %3)\n\t"
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"%0 = p0\n\t"
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"%1 = usr\n\t"
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: "=r"(cmp), "=r"(usr) : "r"(DF_NaN), "r"(DF_ANY)
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: "r2", "p0", "usr");
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check32(cmp, 0);
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check_fpstatus(usr, 0);
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}
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static void check_sfminmax(void)
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{
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int minmax;
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int usr;
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/*
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* Execute sfmin/sfmax instructions with one operand as NaN
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* Check that
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* Result is the other operand
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* Invalid bit in USR is not set
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*/
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asm (CLEAR_FPSTATUS
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"%0 = sfmin(%2, %3)\n\t"
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"%1 = usr\n\t"
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: "=r"(minmax), "=r"(usr) : "r"(SF_NaN), "r"(SF_ANY)
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: "r2", "usr");
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check64(minmax, SF_ANY);
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check_fpstatus(usr, 0);
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asm (CLEAR_FPSTATUS
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"%0 = sfmax(%2, %3)\n\t"
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"%1 = usr\n\t"
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: "=r"(minmax), "=r"(usr) : "r"(SF_NaN), "r"(SF_ANY)
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: "r2", "usr");
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check64(minmax, SF_ANY);
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check_fpstatus(usr, 0);
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/*
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* Execute sfmin/sfmax instructions with both operands NaN
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* Check that
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* Result is SF_HEX_NAN
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* Invalid bit in USR is set
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*/
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asm (CLEAR_FPSTATUS
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"%0 = sfmin(%2, %3)\n\t"
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"%1 = usr\n\t"
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: "=r"(minmax), "=r"(usr) : "r"(SF_NaN), "r"(SF_NaN)
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: "r2", "usr");
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check64(minmax, SF_HEX_NAN);
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check_fpstatus(usr, 0);
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asm (CLEAR_FPSTATUS
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"%0 = sfmax(%2, %3)\n\t"
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"%1 = usr\n\t"
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: "=r"(minmax), "=r"(usr) : "r"(SF_NaN), "r"(SF_NaN)
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: "r2", "usr");
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check64(minmax, SF_HEX_NAN);
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check_fpstatus(usr, 0);
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}
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static void check_dfminmax(void)
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{
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unsigned long long minmax;
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int usr;
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/*
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* Execute dfmin/dfmax instructions with one operand as NaN
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* Check that
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* Result is the other operand
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* Invalid bit in USR is set
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*/
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asm (CLEAR_FPSTATUS
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"%0 = dfmin(%2, %3)\n\t"
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"%1 = usr\n\t"
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: "=r"(minmax), "=r"(usr) : "r"(DF_NaN), "r"(DF_ANY)
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: "r2", "usr");
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check64(minmax, DF_ANY);
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check_fpstatus(usr, FPINVF);
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asm (CLEAR_FPSTATUS
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"%0 = dfmax(%2, %3)\n\t"
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"%1 = usr\n\t"
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: "=r"(minmax), "=r"(usr) : "r"(DF_NaN), "r"(DF_ANY)
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: "r2", "usr");
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check64(minmax, DF_ANY);
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check_fpstatus(usr, FPINVF);
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/*
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* Execute dfmin/dfmax instructions with both operands NaN
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* Check that
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* Result is DF_HEX_NAN
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* Invalid bit in USR is set
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*/
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asm (CLEAR_FPSTATUS
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"%0 = dfmin(%2, %3)\n\t"
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"%1 = usr\n\t"
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: "=r"(minmax), "=r"(usr) : "r"(DF_NaN), "r"(DF_NaN)
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: "r2", "usr");
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check64(minmax, DF_HEX_NAN);
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check_fpstatus(usr, FPINVF);
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asm (CLEAR_FPSTATUS
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"%0 = dfmax(%2, %3)\n\t"
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"%1 = usr\n\t"
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: "=r"(minmax), "=r"(usr) : "r"(DF_NaN), "r"(DF_NaN)
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: "r2", "usr");
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check64(minmax, DF_HEX_NAN);
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check_fpstatus(usr, FPINVF);
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}
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static void check_canonical_NaN(void)
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{
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int sf_result;
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unsigned long long df_result;
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int usr;
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/* Check that each FP instruction properly returns SF_HEX_NAN/DF_HEX_NAN */
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asm(CLEAR_FPSTATUS
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"%0 = sfadd(%2, %3)\n\t"
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"%1 = usr\n\t"
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: "=r"(sf_result), "=r"(usr) : "r"(SF_NaN), "r"(SF_ANY)
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: "r2", "usr");
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check32(sf_result, SF_HEX_NAN);
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check_fpstatus(usr, 0);
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asm(CLEAR_FPSTATUS
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"%0 = sfsub(%2, %3)\n\t"
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"%1 = usr\n\t"
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: "=r"(sf_result), "=r"(usr) : "r"(SF_NaN), "r"(SF_ANY)
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: "r2", "usr");
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check32(sf_result, SF_HEX_NAN);
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check_fpstatus(usr, 0);
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asm(CLEAR_FPSTATUS
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"%0 = sfmpy(%2, %3)\n\t"
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"%1 = usr\n\t"
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: "=r"(sf_result), "=r"(usr) : "r"(SF_NaN), "r"(SF_ANY)
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: "r2", "usr");
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check32(sf_result, SF_HEX_NAN);
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check_fpstatus(usr, 0);
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sf_result = SF_ZERO;
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asm(CLEAR_FPSTATUS
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"%0 += sfmpy(%2, %3)\n\t"
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"%1 = usr\n\t"
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: "+r"(sf_result), "=r"(usr) : "r"(SF_NaN), "r"(SF_ANY)
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: "r2", "usr");
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check32(sf_result, SF_HEX_NAN);
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check_fpstatus(usr, 0);
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sf_result = SF_ZERO;
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asm(CLEAR_FPSTATUS
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"p0 = !cmp.eq(r0, r0)\n\t"
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"%0 += sfmpy(%2, %3, p0):scale\n\t"
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"%1 = usr\n\t"
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: "+r"(sf_result), "=r"(usr) : "r"(SF_NaN), "r"(SF_ANY)
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: "r2", "usr", "p0");
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check32(sf_result, SF_HEX_NAN);
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check_fpstatus(usr, 0);
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sf_result = SF_ZERO;
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asm(CLEAR_FPSTATUS
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"%0 -= sfmpy(%2, %3)\n\t"
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"%1 = usr\n\t"
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: "+r"(sf_result), "=r"(usr) : "r"(SF_NaN), "r"(SF_ANY)
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: "r2", "usr");
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check32(sf_result, SF_HEX_NAN);
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check_fpstatus(usr, 0);
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sf_result = SF_ZERO;
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asm(CLEAR_FPSTATUS
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"%0 += sfmpy(%2, %3):lib\n\t"
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"%1 = usr\n\t"
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: "+r"(sf_result), "=r"(usr) : "r"(SF_NaN), "r"(SF_ANY)
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: "r2", "usr");
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check32(sf_result, SF_HEX_NAN);
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check_fpstatus(usr, 0);
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sf_result = SF_ZERO;
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asm(CLEAR_FPSTATUS
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"%0 -= sfmpy(%2, %3):lib\n\t"
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"%1 = usr\n\t"
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: "+r"(sf_result), "=r"(usr) : "r"(SF_NaN), "r"(SF_ANY)
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: "r2", "usr");
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check32(sf_result, SF_HEX_NAN);
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check_fpstatus(usr, 0);
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asm(CLEAR_FPSTATUS
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"%0 = convert_df2sf(%2)\n\t"
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"%1 = usr\n\t"
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: "=r"(sf_result), "=r"(usr) : "r"(DF_NaN)
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: "r2", "usr");
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check32(sf_result, SF_HEX_NAN);
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check_fpstatus(usr, 0);
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asm(CLEAR_FPSTATUS
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"%0 = dfadd(%2, %3)\n\t"
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"%1 = usr\n\t"
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: "=r"(df_result), "=r"(usr) : "r"(DF_NaN), "r"(DF_ANY)
|
||
|
|
: "r2", "usr");
|
||
|
|
check64(df_result, DF_HEX_NAN);
|
||
|
|
check_fpstatus(usr, 0);
|
||
|
|
|
||
|
|
asm(CLEAR_FPSTATUS
|
||
|
|
"%0 = dfsub(%2, %3)\n\t"
|
||
|
|
"%1 = usr\n\t"
|
||
|
|
: "=r"(df_result), "=r"(usr) : "r"(DF_NaN), "r"(DF_ANY)
|
||
|
|
: "r2", "usr");
|
||
|
|
check64(df_result, DF_HEX_NAN);
|
||
|
|
check_fpstatus(usr, 0);
|
||
|
|
|
||
|
|
asm(CLEAR_FPSTATUS
|
||
|
|
"%0 = convert_sf2df(%2)\n\t"
|
||
|
|
"%1 = usr\n\t"
|
||
|
|
: "=r"(df_result), "=r"(usr) : "r"(SF_NaN)
|
||
|
|
: "r2", "usr");
|
||
|
|
check64(df_result, DF_HEX_NAN);
|
||
|
|
check_fpstatus(usr, 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
int main()
|
||
|
|
{
|
||
|
|
check_compare_exception();
|
||
|
|
check_sfminmax();
|
||
|
|
check_dfminmax();
|
||
|
|
check_canonical_NaN();
|
||
|
|
|
||
|
|
puts(err ? "FAIL" : "PASS");
|
||
|
|
return err ? 1 : 0;
|
||
|
|
}
|