summaryrefslogtreecommitdiffstats
path: root/fpu/softfloat.h
Commit message (Collapse)AuthorAgeFilesLines
* softfloat: Add float32_is_zero_or_denormal() functionPeter Maydell2011-01-141-0/+5
| | | | | | | | | 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>
* softfloat: Implement floatx80_is_any_nan() and float128_is_any_nan()Peter Maydell2011-01-071-0/+11
| | | | | | | | | 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>
* softfloat: Implement flushing input denormals to zeroPeter Maydell2011-01-061-1/+21
| | | | | | | | | | | | | | 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>
* softfloat: add float{x80,128}_maybe_silence_nan()Aurelien Jarno2011-01-061-0/+2
| | | | | | | | 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>
* softfloat: Rename float*_is_nan() functions to float*_is_quiet_nan()Peter Maydell2011-01-021-4/+4
| | | | | | | | | | | | | | | | 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>
* softfloat: Add float/double to 16 bit integer conversion functionsPeter Maydell2010-12-071-0/+4
| | | | | | | | | 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>
* softfloat: Add float*_maybe_silence_nan() functionsPeter Maydell2010-12-071-0/+2
| | | | | | | | 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>
* softfloat: Add float*_is_any_nan() functionsPeter Maydell2010-12-071-0/+10
| | | | | | | | 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>
* softfloat: add float32_exp2()Aurelien Jarno2010-07-131-0/+3
| | | | Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
* target-alpha: Split up FPCR value into separate fields.Richard Henderson2010-02-231-1/+0Star
| | | | | | | | | | | | 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>
* target-alpha: Fixes for alpha-linux syscalls.Richard Henderson2009-12-131-0/+1
| | | | | | | | | | | | | | | | | | 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>
* ARM FP16 supportPaul Brook2009-11-191-0/+6
| | | | | | Implement the ARM VFP half precision floating point extensions. Signed-off-by: Paul Brook <paul@codesourcery.com>
* rename NEEDS_LIBSUNMATH to CONFIG_NEEDS_LIBSUNMATHJuan Quintela2009-07-271-1/+1
| | | | | | | 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>
* rename WORDS_BIGENDIAN to HOST_WORDS_BIGENDIANJuan Quintela2009-07-271-1/+1
| | | | | Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* rename HOST_BSD to CONFIG_BSDJuan Quintela2009-07-271-1/+1
| | | | | Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* change HOST_SOLARIS to CONFIG_SOLARIS{_VERSION}Juan Quintela2009-07-271-1/+1
| | | | | Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* Rename one more _BSD to HOST_BSD (spotted by Hasso Tepper)blueswir12009-03-081-1/+1
| | | | git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6782 c046a42c-6fe2-441c-8c8c-71466251a162
* soft-float: add float32_log2() and float64_log2()aurel322009-02-051-0/+2
| | | | | | Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6518 c046a42c-6fe2-441c-8c8c-71466251a162
* softfloat: add a 1.0 constant for float32 and float64aurel322009-02-041-0/+2
| | | | | | Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6514 c046a42c-6fe2-441c-8c8c-71466251a162
* Implement flush-to-zero mode (denormal results are replaced with zero).pbrook2008-12-191-0/+5
| | | | | | | Signed-off-by: Paul Brook <paul@codesourcery.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6107 c046a42c-6fe2-441c-8c8c-71466251a162
* Implement default-NaN mode.pbrook2008-12-191-0/+5
| | | | | | | Signed-off-by: Paul Brook <paul@codesourcery.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6106 c046a42c-6fe2-441c-8c8c-71466251a162
* fp: fix float32_is_infinity()aurel322008-12-181-1/+1
| | | | | | | | 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
* fp: add floatXX_is_infinity(), floatXX_is_neg(), floatXX_is_zero()aurel322008-12-151-0/+60
| | | | | | Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6050 c046a42c-6fe2-441c-8c8c-71466251a162
* Preliminary AIX supportmalc2008-11-181-0/+2
| | | | git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5732 c046a42c-6fe2-441c-8c8c-71466251a162
* 128-bit float support for user modeblueswir12007-11-251-0/+2
| | | | git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3740 c046a42c-6fe2-441c-8c8c-71466251a162
* Add strict checking mode for softfp code.pbrook2007-11-181-4/+31
| | | | git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3688 c046a42c-6fe2-441c-8c8c-71466251a162
* ARMv7 support.pbrook2007-11-111-0/+4
| | | | git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3572 c046a42c-6fe2-441c-8c8c-71466251a162
* Add proper float*_is_nan prototypes.ths2007-05-311-1/+4
| | | | git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2902 c046a42c-6fe2-441c-8c8c-71466251a162
* Solaris 9/x86 support, by Ben Taylor.ths2007-04-011-0/+4
| | | | git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2577 c046a42c-6fe2-441c-8c8c-71466251a162
* Add missing softfloat helpers.j_mayer2007-03-201-0/+4
| | | | git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2518 c046a42c-6fe2-441c-8c8c-71466251a162
* avoid using char when it is not necessarybellard2006-10-281-34/+34
| | | | git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2204 c046a42c-6fe2-441c-8c8c-71466251a162
* ColdFire target.pbrook2006-10-221-0/+2
| | | | git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2196 c046a42c-6fe2-441c-8c8c-71466251a162
* Solaris port (Ben Taylor)bellard2006-04-261-1/+1
| | | | git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1855 c046a42c-6fe2-441c-8c8c-71466251a162
* added abs, chs and compare functionsbellard2005-03-131-0/+69
| | | | git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1338 c046a42c-6fe2-441c-8c8c-71466251a162
* soft float supportbellard2005-03-131-0/+329
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1332 c046a42c-6fe2-441c-8c8c-71466251a162
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2026-05-14 09:14:39 +0200