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15 Commits

Author SHA1 Message Date
Warner Losh
ae902a5be9 libc: Simplify soft-float on 32-bit arm 
Simplify the tests for 32-bit arm soft float support. For the files
included only on arm, drop the test entirely. For others, test
MACHINE_CPUARCH against arm.

No functional change intended. File lists appear the same before / after
the change.

Sponsored by:		Netflix
Reviewed by:		emaste
Differential Revision:	https://reviews.freebsd.org/D38582
 2023-02-14 09:53:08 -07:00
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
Brooks Davis
13f2393362 Correct an misunderstanding of MDSRCS. 
MDSRCS it intended to allow assembly versions of funtions with C
implementations listed in MISRCS. The selection of the correct
machdep_ldis?.c for a given architecture does not follow this pattern
and the file should be added to SRCS directly.

Reviewed by:	emaste, imp, jhb
MFC after:	1 week
Sponsored by:	DARPA, AFRL
Differential Revision:	https://reviews.freebsd.org/D9841
 2017-03-02 17:07:28 +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
Andrew Turner
eabf853d8d Clean up detection of hard-float ABIs. As with big-endian in r272368 we 
can check against arm*hf*.
 2014-10-01 16:08:19 +00:00
Andrew Turner
6d4766c1b8 Remove MK_ARM_EABI, the armeb issues have been fixed. The code to support 
the oabi is still in the tree, but it is expected this will be removed
as developers work on surrounding code.

With this commit the ARM EABI is the only supported supported ABI by
FreeBSD on ARMa 32-bit processors.

X-MFC after:	never
Relnotes:	yes
Differential Revision: https://reviews.freebsd.org/D876
 2014-10-01 08:26:51 +00:00
Andrew Turner
954c837259 Add the fp{get,set}{mask,round} functions to the public symbols in the map. 
These are only exported for armv6hf as the soft-float ABIs have these in
the softfloat Symbol.map file.
 2014-09-05 18:11:36 +00:00
Marcel Moolenaar
8876613dc5 Replace use of ${.CURDIR} by ${LIBC_SRCTOP} and define ${LIBC_SRCTOP} 
if not already defined. This allows building libc from outside of
lib/libc using a reach-over makefile.

A typical use-case is to build a standard ILP32 version and a COMPAT32
version in a single iteration by building the COMPAT32 version using a
reach-over makefile.

Obtained from:	Juniper Networks, Inc.
 2014-03-04 02:19:39 +00:00
Andrew Turner
0129836894 Add the required __aeabi_* functions to libc. 
The floating point functions are here rather than compiler-rt because the
libc softfloat code allows us to set the rounding mode.
 2013-01-19 05:33:55 +00:00
Andrew Turner
bb41cbb27c Use the compiler-rt version __{u,}divsi3 and __{u,}modsi3 on ARM EABI 2013-01-19 04:11:45 +00:00
Marcel Moolenaar
b6d434fc28 Use GCC's __SOFTFP__ to test whether we're being compiled 
with softfloat or not. Now -msoft-float can be overridden
more easily.
 2009-05-31 02:03:40 +00:00
Daniel Eischen
6fad3aaf15 Add each directory's symbol map file to SYM_MAPS. 2006-03-13 01:15:01 +00:00
Olivier Houchard
2b2714935b Use the correct values for softfloat, in both the little endian and the big 
endian cases.
 2005-03-20 00:53:52 +00:00
David Schultz
bd15659f64 Eliminate gdtoa.mk and move its contents to ${MACHINE_ARCH}/Makefile.inc. 
The purpose of having a separate file involved an abandoned scheme that
would have kept contrib/gdtoa out of the include path for the rest of libc.
 2005-01-15 05:23:58 +00:00
Olivier Houchard
30f70b49e0 Import a Makefile for arm. 2004-11-05 23:51:24 +00:00