From 703c08d98ae6ac6481d460a0ddc5c118bdc4e97e Mon Sep 17 00:00:00 2001 From: Taylor Simpson Date: Sun, 7 Feb 2021 23:46:23 -0600 Subject: [PATCH] Hexagon (tests/tcg/hexagon) TCG tests - floating point Signed-off-by: Taylor Simpson Reviewed-by: Richard Henderson Message-Id: <1612763186-18161-34-git-send-email-tsimpson@quicinc.com> Signed-off-by: Richard Henderson --- tests/tcg/hexagon/Makefile.target | 1 + tests/tcg/hexagon/fpstuff.c | 370 ++++++++++++++++++++++++++++++ 2 files changed, 371 insertions(+) create mode 100644 tests/tcg/hexagon/fpstuff.c diff --git a/tests/tcg/hexagon/Makefile.target b/tests/tcg/hexagon/Makefile.target index a54e3c7503..616af697fe 100644 --- a/tests/tcg/hexagon/Makefile.target +++ b/tests/tcg/hexagon/Makefile.target @@ -41,5 +41,6 @@ HEX_TESTS += preg_alias HEX_TESTS += dual_stores HEX_TESTS += mem_noshuf HEX_TESTS += atomics +HEX_TESTS += fpstuff TESTS += $(HEX_TESTS) diff --git a/tests/tcg/hexagon/fpstuff.c b/tests/tcg/hexagon/fpstuff.c new file mode 100644 index 0000000000..e4f1a0eeb4 --- /dev/null +++ b/tests/tcg/hexagon/fpstuff.c @@ -0,0 +1,370 @@ +/* + * Copyright(c) 2020-2021 Qualcomm Innovation Center, Inc. All Rights Reserved. + * + * 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 . + */ + +/* + * This test checks various FP operations performed on Hexagon + */ + +#include + +const int FPINVF_BIT = 1; /* Invalid */ +const int FPINVF = 1 << FPINVF_BIT; +const int FPDBZF_BIT = 2; /* Divide by zero */ +const int FPDBZF = 1 << FPDBZF_BIT; +const int FPOVFF_BIT = 3; /* Overflow */ +const int FPOVFF = 1 << FPOVFF_BIT; +const int FPUNFF_BIT = 4; /* Underflow */ +const int FPUNFF = 1 << FPUNFF_BIT; +const int FPINPF_BIT = 5; /* Inexact */ +const int FPINPF = 1 << FPINPF_BIT; + +const int SF_ZERO = 0x00000000; +const int SF_NaN = 0x7fc00000; +const int SF_NaN_special = 0x7f800001; +const int SF_ANY = 0x3f800000; +const int SF_HEX_NAN = 0xffffffff; + +const long long DF_NaN = 0x7ff8000000000000ULL; +const long long DF_ANY = 0x3f80000000000000ULL; +const long long DF_HEX_NAN = 0xffffffffffffffffULL; + +int err; + +#define CLEAR_FPSTATUS \ + "r2 = usr\n\t" \ + "r2 = clrbit(r2, #1)\n\t" \ + "r2 = clrbit(r2, #2)\n\t" \ + "r2 = clrbit(r2, #3)\n\t" \ + "r2 = clrbit(r2, #4)\n\t" \ + "r2 = clrbit(r2, #5)\n\t" \ + "usr = r2\n\t" + +static void check_fpstatus_bit(int usr, int expect, int flag, const char *n) +{ + int bit = 1 << flag; + if ((usr & bit) != (expect & bit)) { + printf("ERROR %s: usr = %d, expect = %d\n", n, + (usr >> flag) & 1, (expect >> flag) & 1); + err++; + } +} + +static void check_fpstatus(int usr, int expect) +{ + check_fpstatus_bit(usr, expect, FPINVF_BIT, "Invalid"); + check_fpstatus_bit(usr, expect, FPDBZF_BIT, "Div by zero"); + check_fpstatus_bit(usr, expect, FPOVFF_BIT, "Overflow"); + check_fpstatus_bit(usr, expect, FPUNFF_BIT, "Underflow"); + check_fpstatus_bit(usr, expect, FPINPF_BIT, "Inexact"); +} + +static void check32(int val, int expect) +{ + if (val != expect) { + printf("ERROR: 0x%x != 0x%x\n", val, expect); + err++; + } +} +static void check64(unsigned long long val, unsigned long long expect) +{ + if (val != expect) { + printf("ERROR: 0x%llx != 0x%llx\n", val, expect); + err++; + } +} + +static void check_compare_exception(void) +{ + int cmp; + int usr; + + /* Check that FP compares are quiet (don't raise any execptions) */ + asm (CLEAR_FPSTATUS + "p0 = sfcmp.eq(%2, %3)\n\t" + "%0 = p0\n\t" + "%1 = usr\n\t" + : "=r"(cmp), "=r"(usr) : "r"(SF_NaN), "r"(SF_ANY) + : "r2", "p0", "usr"); + check32(cmp, 0); + check_fpstatus(usr, 0); + + asm (CLEAR_FPSTATUS + "p0 = sfcmp.gt(%2, %3)\n\t" + "%0 = p0\n\t" + "%1 = usr\n\t" + : "=r"(cmp), "=r"(usr) : "r"(SF_NaN), "r"(SF_ANY) + : "r2", "p0", "usr"); + check32(cmp, 0); + check_fpstatus(usr, 0); + + asm (CLEAR_FPSTATUS + "p0 = sfcmp.ge(%2, %3)\n\t" + "%0 = p0\n\t" + "%1 = usr\n\t" + : "=r"(cmp), "=r"(usr) : "r"(SF_NaN), "r"(SF_ANY) + : "r2", "p0", "usr"); + check32(cmp, 0); + check_fpstatus(usr, 0); + + asm (CLEAR_FPSTATUS + "p0 = dfcmp.eq(%2, %3)\n\t" + "%0 = p0\n\t" + "%1 = usr\n\t" + : "=r"(cmp), "=r"(usr) : "r"(DF_NaN), "r"(DF_ANY) + : "r2", "p0", "usr"); + check32(cmp, 0); + check_fpstatus(usr, 0); + + asm (CLEAR_FPSTATUS + "p0 = dfcmp.gt(%2, %3)\n\t" + "%0 = p0\n\t" + "%1 = usr\n\t" + : "=r"(cmp), "=r"(usr) : "r"(DF_NaN), "r"(DF_ANY) + : "r2", "p0", "usr"); + check32(cmp, 0); + check_fpstatus(usr, 0); + + asm (CLEAR_FPSTATUS + "p0 = dfcmp.ge(%2, %3)\n\t" + "%0 = p0\n\t" + "%1 = usr\n\t" + : "=r"(cmp), "=r"(usr) : "r"(DF_NaN), "r"(DF_ANY) + : "r2", "p0", "usr"); + check32(cmp, 0); + check_fpstatus(usr, 0); +} + +static void check_sfminmax(void) +{ + int minmax; + int usr; + + /* + * Execute sfmin/sfmax instructions with one operand as NaN + * Check that + * Result is the other operand + * Invalid bit in USR is not set + */ + asm (CLEAR_FPSTATUS + "%0 = sfmin(%2, %3)\n\t" + "%1 = usr\n\t" + : "=r"(minmax), "=r"(usr) : "r"(SF_NaN), "r"(SF_ANY) + : "r2", "usr"); + check64(minmax, SF_ANY); + check_fpstatus(usr, 0); + + asm (CLEAR_FPSTATUS + "%0 = sfmax(%2, %3)\n\t" + "%1 = usr\n\t" + : "=r"(minmax), "=r"(usr) : "r"(SF_NaN), "r"(SF_ANY) + : "r2", "usr"); + check64(minmax, SF_ANY); + check_fpstatus(usr, 0); + + /* + * Execute sfmin/sfmax instructions with both operands NaN + * Check that + * Result is SF_HEX_NAN + * Invalid bit in USR is set + */ + asm (CLEAR_FPSTATUS + "%0 = sfmin(%2, %3)\n\t" + "%1 = usr\n\t" + : "=r"(minmax), "=r"(usr) : "r"(SF_NaN), "r"(SF_NaN) + : "r2", "usr"); + check64(minmax, SF_HEX_NAN); + check_fpstatus(usr, 0); + + asm (CLEAR_FPSTATUS + "%0 = sfmax(%2, %3)\n\t" + "%1 = usr\n\t" + : "=r"(minmax), "=r"(usr) : "r"(SF_NaN), "r"(SF_NaN) + : "r2", "usr"); + check64(minmax, SF_HEX_NAN); + check_fpstatus(usr, 0); +} + +static void check_dfminmax(void) +{ + unsigned long long minmax; + int usr; + + /* + * Execute dfmin/dfmax instructions with one operand as NaN + * Check that + * Result is the other operand + * Invalid bit in USR is set + */ + asm (CLEAR_FPSTATUS + "%0 = dfmin(%2, %3)\n\t" + "%1 = usr\n\t" + : "=r"(minmax), "=r"(usr) : "r"(DF_NaN), "r"(DF_ANY) + : "r2", "usr"); + check64(minmax, DF_ANY); + check_fpstatus(usr, FPINVF); + + asm (CLEAR_FPSTATUS + "%0 = dfmax(%2, %3)\n\t" + "%1 = usr\n\t" + : "=r"(minmax), "=r"(usr) : "r"(DF_NaN), "r"(DF_ANY) + : "r2", "usr"); + check64(minmax, DF_ANY); + check_fpstatus(usr, FPINVF); + + /* + * Execute dfmin/dfmax instructions with both operands NaN + * Check that + * Result is DF_HEX_NAN + * Invalid bit in USR is set + */ + asm (CLEAR_FPSTATUS + "%0 = dfmin(%2, %3)\n\t" + "%1 = usr\n\t" + : "=r"(minmax), "=r"(usr) : "r"(DF_NaN), "r"(DF_NaN) + : "r2", "usr"); + check64(minmax, DF_HEX_NAN); + check_fpstatus(usr, FPINVF); + + asm (CLEAR_FPSTATUS + "%0 = dfmax(%2, %3)\n\t" + "%1 = usr\n\t" + : "=r"(minmax), "=r"(usr) : "r"(DF_NaN), "r"(DF_NaN) + : "r2", "usr"); + check64(minmax, DF_HEX_NAN); + check_fpstatus(usr, FPINVF); +} + +static void check_canonical_NaN(void) +{ + int sf_result; + unsigned long long df_result; + int usr; + + /* Check that each FP instruction properly returns SF_HEX_NAN/DF_HEX_NAN */ + asm(CLEAR_FPSTATUS + "%0 = sfadd(%2, %3)\n\t" + "%1 = usr\n\t" + : "=r"(sf_result), "=r"(usr) : "r"(SF_NaN), "r"(SF_ANY) + : "r2", "usr"); + check32(sf_result, SF_HEX_NAN); + check_fpstatus(usr, 0); + + asm(CLEAR_FPSTATUS + "%0 = sfsub(%2, %3)\n\t" + "%1 = usr\n\t" + : "=r"(sf_result), "=r"(usr) : "r"(SF_NaN), "r"(SF_ANY) + : "r2", "usr"); + check32(sf_result, SF_HEX_NAN); + check_fpstatus(usr, 0); + + asm(CLEAR_FPSTATUS + "%0 = sfmpy(%2, %3)\n\t" + "%1 = usr\n\t" + : "=r"(sf_result), "=r"(usr) : "r"(SF_NaN), "r"(SF_ANY) + : "r2", "usr"); + check32(sf_result, SF_HEX_NAN); + check_fpstatus(usr, 0); + + sf_result = SF_ZERO; + asm(CLEAR_FPSTATUS + "%0 += sfmpy(%2, %3)\n\t" + "%1 = usr\n\t" + : "+r"(sf_result), "=r"(usr) : "r"(SF_NaN), "r"(SF_ANY) + : "r2", "usr"); + check32(sf_result, SF_HEX_NAN); + check_fpstatus(usr, 0); + + sf_result = SF_ZERO; + asm(CLEAR_FPSTATUS + "p0 = !cmp.eq(r0, r0)\n\t" + "%0 += sfmpy(%2, %3, p0):scale\n\t" + "%1 = usr\n\t" + : "+r"(sf_result), "=r"(usr) : "r"(SF_NaN), "r"(SF_ANY) + : "r2", "usr", "p0"); + check32(sf_result, SF_HEX_NAN); + check_fpstatus(usr, 0); + + sf_result = SF_ZERO; + asm(CLEAR_FPSTATUS + "%0 -= sfmpy(%2, %3)\n\t" + "%1 = usr\n\t" + : "+r"(sf_result), "=r"(usr) : "r"(SF_NaN), "r"(SF_ANY) + : "r2", "usr"); + check32(sf_result, SF_HEX_NAN); + check_fpstatus(usr, 0); + + sf_result = SF_ZERO; + asm(CLEAR_FPSTATUS + "%0 += sfmpy(%2, %3):lib\n\t" + "%1 = usr\n\t" + : "+r"(sf_result), "=r"(usr) : "r"(SF_NaN), "r"(SF_ANY) + : "r2", "usr"); + check32(sf_result, SF_HEX_NAN); + check_fpstatus(usr, 0); + + sf_result = SF_ZERO; + asm(CLEAR_FPSTATUS + "%0 -= sfmpy(%2, %3):lib\n\t" + "%1 = usr\n\t" + : "+r"(sf_result), "=r"(usr) : "r"(SF_NaN), "r"(SF_ANY) + : "r2", "usr"); + check32(sf_result, SF_HEX_NAN); + check_fpstatus(usr, 0); + + asm(CLEAR_FPSTATUS + "%0 = convert_df2sf(%2)\n\t" + "%1 = usr\n\t" + : "=r"(sf_result), "=r"(usr) : "r"(DF_NaN) + : "r2", "usr"); + check32(sf_result, SF_HEX_NAN); + check_fpstatus(usr, 0); + + asm(CLEAR_FPSTATUS + "%0 = dfadd(%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 = 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; +}