Re: [Qemu-devel] [PATCH v4 2/9] softfloat: For Mips only, correct default NaN values

2016-04-13 Thread Leon Alrae
On 12/04/16 13:58, Aleksandar Markovic wrote:
> From: Aleksandar Markovic 
> 
> Only for Mips platform, and only for cases when snan_bit_is_one is 0,
> correct default NaN values (in their 16-, 32-, and 64-bit flavors).
> 
> For more info, see [1], page 84, Table 6.3 "Value Supplied When
> a New Quiet NaN Is Created", and [2], page 52, table 3.7 "Default
> NaN Encodings".
> 
> [1] "MIPS® Architecture For Programmers Volume II-A:
> The MIPS64® Instruction Set Reference Manual",
> Imagination Technologies LTD, Revision 6.04, November 13, 2015
> 
> [2] "MIPS Architecture for Programmers Volume IV-j:
> The MIPS32® SIMD Architecture Module",
> Imagination Technologies LTD, Revision 1.12, February 3, 2016
> 
> Signed-off-by: Aleksandar Markovic 
> ---
>  fpu/softfloat-specialize.h |   12 
>  1 file changed, 12 insertions(+)
> 
> diff --git a/fpu/softfloat-specialize.h b/fpu/softfloat-specialize.h
> index 53dae9b..169246e 100644
> --- a/fpu/softfloat-specialize.h
> +++ b/fpu/softfloat-specialize.h
> @@ -97,7 +97,11 @@ float16 float16_default_nan(float_status *status)
>  if (status->snan_bit_is_one) {
>  return const_float16(0x7DFF);
>  } else {
> +#if defined(TARGET_MIPS)
> +return const_float16(0x7E00);
> +#else
>  return const_float16(0xFE00);
> +#endif
>  }
>  #endif
>  }
> @@ -116,7 +120,11 @@ float32 float32_default_nan(float_status *status)
>  if (status->snan_bit_is_one) {
>  return const_float32(0x7FBF);
>  } else {
> +#if defined(TARGET_MIPS)
> +return const_float32(0x7FC0);
> +#else
>  return const_float32(0xFFC0);
> +#endif
>  }
>  #endif
>  }
> @@ -135,7 +143,11 @@ float64 float64_default_nan(float_status *status)
>  if (status->snan_bit_is_one) {
>  return const_float64(LIT64( 0x7FF7 ));
>  } else {
> +#if defined(TARGET_MIPS)
> +return const_float64(LIT64( 0x7FF8 ));

Could you remove space after/before the parentheses, please? The
scripts/checkpatch.pl would complain here. Otherwise looks good to me.

Thanks,
Leon

> +#else
>  return const_float64(LIT64( 0xFFF8 ));
> +#endif
>  }
>  #endif
>  }
> 




[Qemu-devel] [PATCH v4 2/9] softfloat: For Mips only, correct default NaN values

2016-04-12 Thread Aleksandar Markovic
From: Aleksandar Markovic 

Only for Mips platform, and only for cases when snan_bit_is_one is 0,
correct default NaN values (in their 16-, 32-, and 64-bit flavors).

For more info, see [1], page 84, Table 6.3 "Value Supplied When
a New Quiet NaN Is Created", and [2], page 52, table 3.7 "Default
NaN Encodings".

[1] "MIPS® Architecture For Programmers Volume II-A:
The MIPS64® Instruction Set Reference Manual",
Imagination Technologies LTD, Revision 6.04, November 13, 2015

[2] "MIPS Architecture for Programmers Volume IV-j:
The MIPS32® SIMD Architecture Module",
Imagination Technologies LTD, Revision 1.12, February 3, 2016

Signed-off-by: Aleksandar Markovic 
---
 fpu/softfloat-specialize.h |   12 
 1 file changed, 12 insertions(+)

diff --git a/fpu/softfloat-specialize.h b/fpu/softfloat-specialize.h
index 53dae9b..169246e 100644
--- a/fpu/softfloat-specialize.h
+++ b/fpu/softfloat-specialize.h
@@ -97,7 +97,11 @@ float16 float16_default_nan(float_status *status)
 if (status->snan_bit_is_one) {
 return const_float16(0x7DFF);
 } else {
+#if defined(TARGET_MIPS)
+return const_float16(0x7E00);
+#else
 return const_float16(0xFE00);
+#endif
 }
 #endif
 }
@@ -116,7 +120,11 @@ float32 float32_default_nan(float_status *status)
 if (status->snan_bit_is_one) {
 return const_float32(0x7FBF);
 } else {
+#if defined(TARGET_MIPS)
+return const_float32(0x7FC0);
+#else
 return const_float32(0xFFC0);
+#endif
 }
 #endif
 }
@@ -135,7 +143,11 @@ float64 float64_default_nan(float_status *status)
 if (status->snan_bit_is_one) {
 return const_float64(LIT64( 0x7FF7 ));
 } else {
+#if defined(TARGET_MIPS)
+return const_float64(LIT64( 0x7FF8 ));
+#else
 return const_float64(LIT64( 0xFFF8 ));
+#endif
 }
 #endif
 }
-- 
1.7.9.5