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target/mips: Move msa_reset() to msa_helper.c 

translate_init.c.inc mostly contains CPU definitions.
msa_reset() doesn't belong here, move it with the MSA
helpers.

One comment style is updated to avoid checkpatch.pl warning.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20201215225757.764263-15-f4bug@amsat.org>
Tested-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
This commit is contained in:
Philippe Mathieu-Daudé 2020-11-30 13:47:40 +01:00
parent 810fda17c8
commit 03e4d95c91
4 changed files with 39 additions and 36 deletions
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36
target/mips/cpu-defs.c.inc
View File

@ -18,8 +18,6 @@
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include "fpu_helper.h"
/* CPU / CPU family specific config register values. */
/* Have config1, uncached coherency */
@ -975,37 +973,3 @@ static void mvp_init(CPUMIPSState *env)
(0x0 << CP0MVPC1_PCX) | (0x0 << CP0MVPC1_PCP2) |
(0x1 << CP0MVPC1_PCP1);
}
static 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);
}

1
target/mips/cpu.c
View File

@ -33,6 +33,7 @@
#include "hw/qdev-clock.h"
#include "hw/semihosting/semihost.h"
#include "qapi/qapi-commands-machine-target.h"
#include "fpu_helper.h"
#if !defined(CONFIG_USER_ONLY)

2
target/mips/internal.h
View File

@ -199,6 +199,8 @@ static inline bool cpu_mips_hw_interrupts_pending(CPUMIPSState *env)
void mips_tcg_init(void);
void msa_reset(CPUMIPSState *env);
/* cp0_timer.c */
uint32_t cpu_mips_get_count(CPUMIPSState *env);
void cpu_mips_store_count(CPUMIPSState *env, uint32_t value);

36
target/mips/msa_helper.c
View File

@ -8201,3 +8201,39 @@ void helper_msa_ffint_u_df(CPUMIPSState *env, uint32_t df, uint32_t wd,
msa_move_v(pwd, pwx);
}
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);
}