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23 Commits

Author SHA1 Message Date
emaste
9b573234c7 arch.7: correct statement about time_t size 
After r320347 it is 64-bit on every architecture except i386.

Sponsored by:	The FreeBSD Foundation
 2017-10-04 14:39:55 +00:00
br
3364e8aea9 o Replace __riscv__ with __riscv 
o Replace __riscv64 with (__riscv && __riscv_xlen == 64)

This is required to support new GCC 7.1 compiler.
This is compatible with current GCC 6.1 compiler.

RISC-V is extensible ISA and the idea here is to have built-in define
per each extension, so together with __riscv we will have some subset
of these as well (depending on -march string passed to compiler):

__riscv_compressed
__riscv_atomic
__riscv_mul
__riscv_div
__riscv_muldiv
__riscv_fdiv
__riscv_fsqrt
__riscv_float_abi_soft
__riscv_float_abi_single
__riscv_float_abi_double
__riscv_cmodel_medlow
__riscv_cmodel_medany
__riscv_cmodel_pic
__riscv_xlen

Reviewed by:	ngie
Sponsored by:	DARPA, AFRL
Differential Revision:	https://reviews.freebsd.org/D11901
 2017-08-07 14:09:57 +00:00
jhibbits
11d34fd62a Solve the y2038 problem for powerpc 
AKA Make time_t 64 bits on powerpc(32).

PowerPC currently (until now) was one of two architectures with a 32-bit time_t
on 32-bit archs (the other being i386).  This is an ABI breakage, so all ports,
and all local binaries, *must* be recompiled.

Tested by:	andreast, others
MFC after:	Never
Relnotes:	Yes
 2017-06-26 02:25:19 +00:00
jhb
c28f4b3efa Note that the first release of FreeBSD/alpha was 3.2. 
Alpha is explicitly mentioned in the release announcements beginning with
3.2.
 2017-05-16 23:15:40 +00:00
emaste
113d7d6cfb arch(7): correct initial versions for alpha and pc98 
Submitted by:	imp
 2017-05-08 14:17:10 +00:00
kib
da256d760c Grammar fixes. 
Noted by:	bde
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
 2017-05-05 18:36:41 +00:00
kib
889e51e1f7 Define the scope and purpose of the page. 
Submitted by:	emaste
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
 2017-05-05 18:21:33 +00:00
kib
48cca33fb2 Fix some grammar, fix some markup, bump copyright year, provide more 
exact claims in some cases.

Discussed with:	bde (most parts)
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
 2017-05-05 17:23:57 +00:00
emaste
85b062efee arch(7): add a table of per-arch initial/final FreeBSD version 
Reviewed by:	kib, wblock
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D10573
 2017-05-05 16:40:45 +00:00
kib
7a6ad034d5 Provide introduction for the arch(7) manpage. 
Start with some words about linear address space and its layout, then
explain pointers models and ABIs, providing explanation to the
structure of the tables.

Reviewed by:	emaste, imp
'Future-proof' cheri wording by:	brooks
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
Differential revision:	https://reviews.freebsd.org/D10596
 2017-05-04 21:31:50 +00:00
kib
c01a713221 Avoid wrapping of the machine-dependent type sizes table, by removing 
non-informational sizeof() expressions.  Add some explanatory and
summary sentences.

Noted by:	bde
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
 2017-05-04 11:57:52 +00:00
jhb
7bd7aeb618 Replace 'riscv' with the RISC-V targets 'riscv64' and 'riscv64sf'. 2017-05-03 16:55:02 +00:00
jhibbits
8e675e4b83 Add powerpcspe to arch(7) 
Reviewed by:	emaste
 2017-05-02 21:33:27 +00:00
kib
424a6de99f Document time_t size. 
Reviewed by:	emaste, imp, vangyzen
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D10568
 2017-05-02 14:52:35 +00:00
kevlo
2cd47566ff Mention softfloat and hardfloat supports for RISC-V. 
Reviewed by:	br
 2017-01-21 07:07:50 +00:00
br
639bce9b04 o Add support for long double. 
o Add support for latest RISC-V GNU toolchain.

Sponsored by:	DARPA, AFRL
Sponsored by:	HEIF5
 2016-11-03 13:06:17 +00:00
br
fbeb8fc5ac Add full softfloat and hardfloat support for MIPS. 
This adds new target architectures for hardfloat:
mipselhf mipshf mips64elhf mips64hf.

Tested in QEMU only.

Sponsored by:	DARPA, AFRL
Sponsored by:	HEIF5
Differential Revision:	https://reviews.freebsd.org/D8376
 2016-10-31 15:33:58 +00:00
emaste
0175d07257 arch.7: correct typo in predefined macro example 
The example incorrectly used -Dm, which defines macro m with value 1.
It is supposed to be -dM, which lists macros.
 2016-10-20 20:16:10 +00:00
kib
74c216beb6 Remove spurious but harmless double-quote. 
Noted by:	jhb
 2016-07-21 16:58:53 +00:00
kib
3100997739 Improve typesetting. 
Reviewed by:	bapt
No objections from:	emaste
Sponsored by:	The FreeBSD Foundation
Differential revision:	https://reviews.freebsd.org/D7261
 2016-07-21 09:37:17 +00:00
emaste
5e29f20899 arch.7: correct MIPS endianness transcription error 
Submitted by:	Nikolai Lifanov <lifanov@mail.lifanov.com>
 2016-07-19 20:11:50 +00:00
emaste
079678a0dc arch.7: we also use 1M page mappings on armv6 
Submitted by:	alc
 2016-07-19 19:50:30 +00:00
emaste
f318deff8b add an arch.7 man page with architecture-specific details 
Based on details collected on the wiki, at
https://wiki.freebsd.org/EdMaste/ArchitectureSpecifics
Further details to be added over time.

Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D7096
 2016-07-19 17:46:09 +00:00