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| author | Peter Maydell <peter.maydell@linaro.org> | 2011-01-14 20:39:18 +0100 |
|---|---|---|
| committer | Aurelien Jarno <aurelien@aurel32.net> | 2011-01-14 20:39:18 +0100 |
| commit | 3a492f3a606642879637d50777444d82440c9f5c (patch) | |
| tree | 36c28acfabbaca93bfbaf4e3cc8f8e6950daf1ae /target-arm/helper.c | |
| parent | 9ea62f571ce8953dba1d2bad2bdeaf9c3a84b7d7 (diff) | |
| download | qemu-3a492f3a606642879637d50777444d82440c9f5c.zip qemu-3a492f3a606642879637d50777444d82440c9f5c.tar.gz qemu-3a492f3a606642879637d50777444d82440c9f5c.tar.bz2 | |
target-arm: Add support for 'Standard FPSCR Value' as used by Neon
Add support to the ARM helper routines for a second fp_status value
which should be used for operations which the ARM ARM indicates use
"ARM standard floating-point arithmetic" rather than being controlled
by the rounding/flush/NaN settings in the FPSCR.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Diffstat (limited to 'target-arm/helper.c')
| -rw-r--r-- | target-arm/helper.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/target-arm/helper.c b/target-arm/helper.c index ac47de0..d779055 100644 --- a/target-arm/helper.c +++ b/target-arm/helper.c @@ -237,6 +237,9 @@ void cpu_reset(CPUARMState *env) env->vfp.xregs[ARM_VFP_FPEXC] = 0; env->cp15.c2_base_mask = 0xffffc000u; #endif + set_flush_to_zero(1, &env->vfp.standard_fp_status); + set_flush_inputs_to_zero(1, &env->vfp.standard_fp_status); + set_default_nan_mode(1, &env->vfp.standard_fp_status); tlb_flush(env, 1); } @@ -2256,6 +2259,7 @@ uint32_t HELPER(vfp_get_fpscr)(CPUState *env) | (env->vfp.vec_len << 16) | (env->vfp.vec_stride << 20); i = get_float_exception_flags(&env->vfp.fp_status); + i |= get_float_exception_flags(&env->vfp.standard_fp_status); fpscr |= vfp_exceptbits_from_host(i); return fpscr; } @@ -2323,6 +2327,7 @@ void HELPER(vfp_set_fpscr)(CPUState *env, uint32_t val) i = vfp_exceptbits_to_host(val); set_float_exception_flags(i, &env->vfp.fp_status); + set_float_exception_flags(0, &env->vfp.standard_fp_status); } void vfp_set_fpscr(CPUState *env, uint32_t val) |