Commit Graph

11 Commits

Author SHA1 Message Date
Richard Henderson 71bfd65c5f softfloat: Name compare relation enum
Give the previously unnamed enum a typedef name.  Use it in the
prototypes of compare functions.  Use it to hold the results
of the compare functions.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2020-05-19 08:41:45 -07:00
Stafford Horne 97a254b3f0 target/openrisc: Fix FPCSR mask to allow setting DZF
The mask used when setting FPCSR allows setting bits 10 to 1.  However,
OpenRISC has flags and config bits in 11 to 1, 11 being Divide by Zero
Flag (DZF).  This seems like an off-by-one bug.

This was found when testing the GLIBC test suite which has test cases to
set and clear all bits.

Signed-off-by: Stafford Horne <shorne@gmail.com>
Message-Id: <20200110212843.27335-1-shorne@gmail.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2020-01-16 14:50:43 -10:00
Richard Henderson a465772eea target/openrisc: Implement move to/from FPCSR
Reviewed-by: Stafford Horne <shorne@gmail.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-09-04 12:58:55 -07:00
Richard Henderson 2b13b4b93d target/openrisc: Implement unordered fp comparisons
These were added to the 1.3 spec.  For OF32S, validate AVR.
But OF64A32 is itself new to 1.3 so no extra check needed.

Reviewed-by: Stafford Horne <shorne@gmail.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-09-04 12:57:59 -07:00
Richard Henderson 62f2b0389f target/openrisc: Add support for ORFPX64A32
This is hardware support for double-precision floating-point using
pairs of 32-bit registers.  Fix latent bugs in the heretofore unused
helper_itofd and helper_ftoid.  Include the bit for cpu "any".
Change the default cpu for linux-user to "any".

Reviewed-by: Stafford Horne <shorne@gmail.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-09-04 12:53:33 -07:00
Richard Henderson 091a35165f target/openrisc: Fix lf.ftoi.s
The specification of this insn is round-to-zero.

Reviewed-by: Stafford Horne <shorne@gmail.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-09-04 12:51:56 -07:00
Thomas Huth 198a2d214f target/openrisc: Fix LGPL information in the file headers
It's either "GNU *Library* General Public License version 2" or "GNU
Lesser General Public License version *2.1*", but there was no "version
2.0" of the "Lesser" license. So assume that version 2.1 is meant here.

Acked-by: Stafford Horne <shorne@gmail.com>
Message-Id: <1550073577-4248-1-git-send-email-thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2019-05-08 17:45:54 +02:00
Richard Henderson 4e2d30079c target-openrisc: Write back result before FPE exception
The architecture manual is unclear about this, but the or1ksim
does writeback before the exception.  This requires splitting
the helpers in half, with the exception raised by the second.

Acked-by: Stafford Horne <shorne@gmail.com>
Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2018-05-14 14:35:02 -07:00
Alex Bennée 24f91e81b6 target/*/cpu.h: remove softfloat.h
As cpu.h is another typically widely included file which doesn't need
full access to the softfloat API we can remove the includes from here
as well. Where they do need types it's typically for float_status and
the rounding modes so we move that to softfloat-types.h as well.

As a result of not having softfloat in every cpu.h call we now need to
add it to various helpers that do need the full softfloat.h
definitions.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
[For PPC parts]
Acked-by: David Gibson <david@gibson.dropbear.id.au>
2018-02-21 10:20:24 +00:00
Richard Henderson 762e22edcd target/openrisc: Fix madd
Note that the specification for lf.madd.s is confused.  It's
the only mention of supposed FPMADDHI/FPMADDLO special registers.
On the other hand, or1ksim implements a somewhat normal non-fused
multiply and add.  Mirror that.

Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-02-14 08:15:00 +11:00
Thomas Huth fcf5ef2ab5 Move target-* CPU file into a target/ folder
We've currently got 18 architectures in QEMU, and thus 18 target-xxx
folders in the root folder of the QEMU source tree. More architectures
(e.g. RISC-V, AVR) are likely to be included soon, too, so the main
folder of the QEMU sources slowly gets quite overcrowded with the
target-xxx folders.
To disburden the main folder a little bit, let's move the target-xxx
folders into a dedicated target/ folder, so that target-xxx/ simply
becomes target/xxx/ instead.

Acked-by: Laurent Vivier <laurent@vivier.eu> [m68k part]
Acked-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> [tricore part]
Acked-by: Michael Walle <michael@walle.cc> [lm32 part]
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> [s390x part]
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> [s390x part]
Acked-by: Eduardo Habkost <ehabkost@redhat.com> [i386 part]
Acked-by: Artyom Tarasenko <atar4qemu@gmail.com> [sparc part]
Acked-by: Richard Henderson <rth@twiddle.net> [alpha part]
Acked-by: Max Filippov <jcmvbkbc@gmail.com> [xtensa part]
Reviewed-by: David Gibson <david@gibson.dropbear.id.au> [ppc part]
Acked-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> [cris&microblaze part]
Acked-by: Guan Xuetao <gxt@mprc.pku.edu.cn> [unicore32 part]
Signed-off-by: Thomas Huth <thuth@redhat.com>
2016-12-20 21:52:12 +01:00