aboutsummaryrefslogtreecommitdiff
path: root/fpu/softfloat.h
AgeCommit message (Collapse)Author
2011-02-24softfloat: move all default NaN definitions to softfloat.h.Christophe Lyon
These special values are needed to implement some helper functions, which return/use these values in some cases. Signed-off-by: Christophe Lyon <christophe.lyon@st.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2011-02-10softfloat: Fix compilation failures with USE_SOFTFLOAT_STRUCT_TYPESPeter Maydell
Make softfloat compile with USE_SOFTFLOAT_STRUCT_TYPES defined, by adding and using new macros const_float16(), const_float32() and const_float64() so you can use array initializers in an array of float16/float32/float64 whether the types are bare or wrapped in the structs. [aurelien@aurel32.net: do the same for float16] Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2011-02-10softfloat: Add float16 type and float16 NaN handling functionsPeter Maydell
Add a float16 type to softfloat, rather than using bits16 directly. Also add the missing functions float16_is_quiet_nan(), float16_is_signaling_nan() and float16_maybe_silence_nan(), which are needed for the float16 conversion routines. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2011-01-14softfloat: Add float32_is_zero_or_denormal() functionPeter Maydell
Add a utility function to softfloat to test whether a float32 is zero or denormal. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2011-01-07softfloat: Implement floatx80_is_any_nan() and float128_is_any_nan()Peter Maydell
Implement versions of float*_is_any_nan() for the floatx80 and float128 types. Acked-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
2011-01-06softfloat: Implement flushing input denormals to zeroPeter Maydell
Add support to softfloat for flushing input denormal float32 and float64 to zero. softfloat's existing 'flush_to_zero' flag only flushes denormals to zero on output. Some CPUs need input denormals to be flushed before processing as well. Implement this, using a new status flag to enable it and a new exception status bit to indicate when it has happened. Existing CPUs should be unaffected as there is no behaviour change unless the mode is enabled. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Acked-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2011-01-06softfloat: add float{x80,128}_maybe_silence_nan()Aurelien Jarno
Add float{x80,128}_maybe_silence_nan() functions, they will be need by propagateFloat{x80,128}NaN(). Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2011-01-02softfloat: Rename float*_is_nan() functions to float*_is_quiet_nan()Peter Maydell
The softfloat functions float*_is_nan() were badly misnamed, because they return true only for quiet NaNs, not for all NaNs. Rename them to float*_is_quiet_nan() to more accurately reflect what they do. This change was produced by: perl -p -i -e 's/_is_nan/_is_quiet_nan/g' $(git grep -l is_nan) (with the results manually checked.) Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Nathan Froyd <froydnj@codesourcery.com> Acked-by: Edgar E. Iglesias <edgar.iglesias@gmail.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-12-07softfloat: Add float/double to 16 bit integer conversion functionsPeter Maydell
The ARM architecture needs float/double to 16 bit integer conversions. (The 32 bit versions aren't sufficient because of the requirement to saturate at 16 bit MAXINT/MININT and to get the exception bits right.) Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Nathan Froyd <froydnj@codesourcery.com>
2010-12-07softfloat: Add float*_maybe_silence_nan() functionsPeter Maydell
Add functions float*_maybe_silence_nan() which ensure that a value is not a signaling NaN by turning it into a quiet NaN. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Nathan Froyd <froydnj@codesourcery.com>
2010-12-07softfloat: Add float*_is_any_nan() functionsPeter Maydell
Add float*_is_any_nan() functions which return true if the argument is a NaN of any kind (quiet or signalling). Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Nathan Froyd <froydnj@codesourcery.com>
2010-07-13softfloat: add float32_exp2()Aurelien Jarno
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-02-23target-alpha: Split up FPCR value into separate fields.Richard Henderson
The fpcr_exc_status, fpcr_exc_mask, and fpcr_dyn_round fields are stored in <softfloat.h> format for convenience during regular execution. Revert the addition of float_exception_mask to float_status, added in ba0e276db4b51bd2255a5d5ff8902c70d32ade40. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2009-12-13target-alpha: Fixes for alpha-linux syscalls.Richard Henderson
1. Add correct definitions of error numbers. 2. Implement SYS_osf_sigprocmask 3. Implement SYS_osf_get/setsysinfo for IEEE_FP_CONTROL. This last requires exposing the FPCR value to do_syscall. Since this value is actually split up into the float_status, expose routines from helper.c to access it. Finally, also add a float_exception_mask field to float_status. We don't actually use it to control delivery of exceptions to the emulator yet, but simply hold the value that we placed there when loading/storing the FPCR. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2009-11-19ARM FP16 supportPaul Brook
Implement the ARM VFP half precision floating point extensions. Signed-off-by: Paul Brook <paul@codesourcery.com>
2009-07-27rename NEEDS_LIBSUNMATH to CONFIG_NEEDS_LIBSUNMATHJuan Quintela
Once there fix a place where it was misspelled Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-07-27rename WORDS_BIGENDIAN to HOST_WORDS_BIGENDIANJuan Quintela
Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-07-27rename HOST_BSD to CONFIG_BSDJuan Quintela
Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-07-27change HOST_SOLARIS to CONFIG_SOLARIS{_VERSION}Juan Quintela
Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-03-08Rename one more _BSD to HOST_BSD (spotted by Hasso Tepper)blueswir1
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6782 c046a42c-6fe2-441c-8c8c-71466251a162
2009-02-05soft-float: add float32_log2() and float64_log2()aurel32
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6518 c046a42c-6fe2-441c-8c8c-71466251a162
2009-02-04softfloat: add a 1.0 constant for float32 and float64aurel32
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6514 c046a42c-6fe2-441c-8c8c-71466251a162
2008-12-19Implement flush-to-zero mode (denormal results are replaced with zero).pbrook
Signed-off-by: Paul Brook <paul@codesourcery.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6107 c046a42c-6fe2-441c-8c8c-71466251a162
2008-12-19Implement default-NaN mode.pbrook
Signed-off-by: Paul Brook <paul@codesourcery.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6106 c046a42c-6fe2-441c-8c8c-71466251a162
2008-12-18fp: fix float32_is_infinity()aurel32
Thanks to Laurent Desnogues for the hint. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6089 c046a42c-6fe2-441c-8c8c-71466251a162
2008-12-15fp: add floatXX_is_infinity(), floatXX_is_neg(), floatXX_is_zero()aurel32
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6050 c046a42c-6fe2-441c-8c8c-71466251a162
2008-11-18Preliminary AIX supportmalc
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5732 c046a42c-6fe2-441c-8c8c-71466251a162
2007-11-25 128-bit float support for user modeblueswir1
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3740 c046a42c-6fe2-441c-8c8c-71466251a162
2007-11-18Add strict checking mode for softfp code.pbrook
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3688 c046a42c-6fe2-441c-8c8c-71466251a162
2007-11-11ARMv7 support.pbrook
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3572 c046a42c-6fe2-441c-8c8c-71466251a162
2007-05-31Add proper float*_is_nan prototypes.ths
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2902 c046a42c-6fe2-441c-8c8c-71466251a162
2007-04-01Solaris 9/x86 support, by Ben Taylor.ths
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2577 c046a42c-6fe2-441c-8c8c-71466251a162
2007-03-20Add missing softfloat helpers.j_mayer
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2518 c046a42c-6fe2-441c-8c8c-71466251a162
2006-10-28avoid using char when it is not necessarybellard
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2204 c046a42c-6fe2-441c-8c8c-71466251a162
2006-10-22ColdFire target.pbrook
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2196 c046a42c-6fe2-441c-8c8c-71466251a162
2006-04-25Solaris port (Ben Taylor)bellard
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1855 c046a42c-6fe2-441c-8c8c-71466251a162
2005-03-13added abs, chs and compare functionsbellard
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1338 c046a42c-6fe2-441c-8c8c-71466251a162
2005-03-13soft float supportbellard
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1332 c046a42c-6fe2-441c-8c8c-71466251a162
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-27 20:04:22 +0000