From fed50ffd5ce4b03f94036232c613b2ca8fba06eb Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Date: Sat, 16 Jan 2021 16:32:06 +0100 Subject: [PATCH] target/mips: Move msa_reset() to new source file MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit mips_cpu_reset() is used by all accelerators, and calls msa_reset(), which is defined in msa_helper.c. Beside msa_reset(), the rest of msa_helper.c is only useful to the TCG accelerator. To be able to restrict this helper file to TCG, we need to move msa_reset() out of it. Reviewed-by: Richard Henderson Signed-off-by: Philippe Mathieu-Daudé Message-Id: <20210428170410.479308-4-f4bug@amsat.org> --- target/mips/meson.build | 1 + target/mips/msa.c | 60 ++++++++++++++++++++++++++++++++++++++++ target/mips/msa_helper.c | 36 ------------------------ 3 files changed, 61 insertions(+), 36 deletions(-) create mode 100644 target/mips/msa.c diff --git a/target/mips/meson.build b/target/mips/meson.build index 5fcb211ca9..daf5f1d55b 100644 --- a/target/mips/meson.build +++ b/target/mips/meson.build @@ -11,6 +11,7 @@ mips_ss.add(files( 'cpu.c', 'fpu.c', 'gdbstub.c', + 'msa.c', )) mips_tcg_ss = ss.source_set() mips_tcg_ss.add(gen) diff --git a/target/mips/msa.c b/target/mips/msa.c new file mode 100644 index 0000000000..61f1a9a593 --- /dev/null +++ b/target/mips/msa.c @@ -0,0 +1,60 @@ +/* + * MIPS SIMD Architecture Module Instruction emulation helpers for QEMU. + * + * Copyright (c) 2014 Imagination Technologies + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see . + */ + +#include "qemu/osdep.h" +#include "cpu.h" +#include "internal.h" +#include "fpu/softfloat.h" +#include "fpu_helper.h" + +void msa_reset(CPUMIPSState *env) +{ + if (!ase_msa_available(env)) { + return; + } + +#ifdef CONFIG_USER_ONLY + /* MSA access enabled */ + env->CP0_Config5 |= 1 << CP0C5_MSAEn; + env->CP0_Status |= (1 << CP0St_CU1) | (1 << CP0St_FR); +#endif + + /* + * MSA CSR: + * - non-signaling floating point exception mode off (NX bit is 0) + * - Cause, Enables, and Flags are all 0 + * - round to nearest / ties to even (RM bits are 0) + */ + env->active_tc.msacsr = 0; + + restore_msa_fp_status(env); + + /* tininess detected after rounding.*/ + set_float_detect_tininess(float_tininess_after_rounding, + &env->active_tc.msa_fp_status); + + /* clear float_status exception flags */ + set_float_exception_flags(0, &env->active_tc.msa_fp_status); + + /* clear float_status nan mode */ + set_default_nan_mode(0, &env->active_tc.msa_fp_status); + + /* set proper signanling bit meaning ("1" means "quiet") */ + set_snan_bit_is_one(0, &env->active_tc.msa_fp_status); +} diff --git a/target/mips/msa_helper.c b/target/mips/msa_helper.c index 4caefe29ad..04af54f66d 100644 --- a/target/mips/msa_helper.c +++ b/target/mips/msa_helper.c @@ -8595,39 +8595,3 @@ void helper_msa_st_d(CPUMIPSState *env, uint32_t wd, cpu_stq_data(env, addr + (1 << DF_DOUBLE), pwd->d[1]); #endif } - -void msa_reset(CPUMIPSState *env) -{ - if (!ase_msa_available(env)) { - return; - } - -#ifdef CONFIG_USER_ONLY - /* MSA access enabled */ - env->CP0_Config5 |= 1 << CP0C5_MSAEn; - env->CP0_Status |= (1 << CP0St_CU1) | (1 << CP0St_FR); -#endif - - /* - * MSA CSR: - * - non-signaling floating point exception mode off (NX bit is 0) - * - Cause, Enables, and Flags are all 0 - * - round to nearest / ties to even (RM bits are 0) - */ - env->active_tc.msacsr = 0; - - restore_msa_fp_status(env); - - /* tininess detected after rounding.*/ - set_float_detect_tininess(float_tininess_after_rounding, - &env->active_tc.msa_fp_status); - - /* clear float_status exception flags */ - set_float_exception_flags(0, &env->active_tc.msa_fp_status); - - /* clear float_status nan mode */ - set_default_nan_mode(0, &env->active_tc.msa_fp_status); - - /* set proper signanling bit meaning ("1" means "quiet") */ - set_snan_bit_is_one(0, &env->active_tc.msa_fp_status); -}