diff options
| author | Bastian Koppelmann | 2016-03-11 16:03:11 +0100 |
|---|---|---|
| committer | Bastian Koppelmann | 2016-03-23 09:22:48 +0100 |
| commit | 996a729f9b7f93fb921891bf0e07757a29d0c68a (patch) | |
| tree | aa4f52d2b9a699187c4afc52c24258b85caf069a /target-tricore/helper.c | |
| parent | target-tricore: Fix psw_read() clearing too many bits (diff) | |
| download | qemu-996a729f9b7f93fb921891bf0e07757a29d0c68a.tar.gz qemu-996a729f9b7f93fb921891bf0e07757a29d0c68a.tar.xz qemu-996a729f9b7f93fb921891bf0e07757a29d0c68a.zip | |
target-tricore: Add FPU infrastructure
This patch adds a file for all the FPU related helpers with all the includes,
useful defines, and a function to update the status bits. Additionally it adds
a mask for the rounding mode bits of PSW as well as all the opcodes for the
FPU instructions.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Message-Id: <1457708597-3025-2-git-send-email-kbastian@mail.uni-paderborn.de>
Diffstat (limited to 'target-tricore/helper.c')
| -rw-r--r-- | target-tricore/helper.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/target-tricore/helper.c b/target-tricore/helper.c index adbb6db10d..71b31cdb9b 100644 --- a/target-tricore/helper.c +++ b/target-tricore/helper.c @@ -110,6 +110,14 @@ void tricore_cpu_list(FILE *f, fprintf_function cpu_fprintf) g_slist_free(list); } +void fpu_set_state(CPUTriCoreState *env) +{ + set_float_rounding_mode(env->PSW & MASK_PSW_FPU_RM, &env->fp_status); + set_flush_inputs_to_zero(1, &env->fp_status); + set_flush_to_zero(1, &env->fp_status); + set_default_nan_mode(1, &env->fp_status); +} + uint32_t psw_read(CPUTriCoreState *env) { /* clear all USB bits */ @@ -132,4 +140,6 @@ void psw_write(CPUTriCoreState *env, uint32_t val) env->PSW_USB_AV = (val & MASK_USB_AV) << 3; env->PSW_USB_SAV = (val & MASK_USB_SAV) << 4; env->PSW = val; + + fpu_set_state(env); } |