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10 Commits

Author SHA1 Message Date
Warner Losh
0b972ac92e Support armv7 builds for userland 
Make armv7 as a new MACHINE_ARCH.

Copy all the places we do armv6 and add armv7 as basically an
alias. clang appears to generate code for armv7 by default. armv7 hard
float isn't supported by the the in-tree gcc, so it hasn't been
updated to have a new default.

Support armv7 as a new valid MACHINE_ARCH (and by extension
TARGET_ARCH).

Add armv7 to the universe build.

Differential Revision: https://reviews.freebsd.org/D12010
 2017-10-05 23:01:33 +00:00
Warner Losh
2c0e9e2a09 Make armv6 hard float abi by default. Kill armv6hf. 
Allow CPUTYPE=soft to build the current soft-float abi libraries.
Add UPDATING entry to announce this.

Approved by: re@ (gjb)
 2016-05-18 06:01:18 +00:00
Bryan Drewery
59f6130d2a Implement (ACFLAGS|CFLAGS|CXXFLAGS).SRC globally. 
Sponsored by:	EMC / Isilon Storage Division
 2016-03-26 03:46:12 +00:00
Ian Lepore
cbc120b22c Fix compilation when the armv6 world is being compiled without hw floating 
point support.  The fenv-vfp.c file overrides -mfloat-abi so it can use
floating point instructions if it detects support at runtime.  Make it also
override -mfpu in case the user has set -mfpu=none.
 2015-06-24 18:29:34 +00:00
Andrew Turner
4f35216187 Build fenv-vfp.c with the softfp float abi. Without this gcc generates an 
incorrect assembly file that doesn't allow for vfp instructions.
 2014-03-16 09:38:43 +00:00
Andrew Turner
bb6c193ec7 On armv6 access both the softfloat and, when available, the vfp to get and 
set the floating-point environment.
 2014-03-15 21:58:07 +00:00
David Schultz
b7e83566eb Add a change I missed in r230367 (don't inline arm's fenv.h functions). 2012-01-20 07:01:58 +00:00
David Schultz
7bde21b1f9 Add an implementation of fenv.h intended for platforms that lack an FPU and 
use softfloat.

Thanks to Ian Lepore for testing and debugging this patch.  The fenv
regression tests pass (at least for Ian's arm chip) with this change.
 2012-01-16 04:09:17 +00:00
Daniel Eischen
d7eda46253 Add symbol versioning to libm. 2006-03-27 23:59:45 +00:00
David Schultz
4be31f0664 Define the LDBL_PREC to be the number of significant bits in a long 
double's mantissa.
 2005-03-07 04:53:36 +00:00