target/mips: Move msa_reset() to new source file

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 <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210428170410.479308-4-f4bug@amsat.org>

3 files changed, 61 insertions, 36 deletions

diff --git a/target/mips/meson.build b/target/mips/meson.build
index 5fcb211..daf5f1d 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 0000000..61f1a9a
--- /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 <http://www.gnu.org/licenses/>.
+ */
+
+#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 4caefe2..04af54f 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);
-}