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Peter Maydell 2f0940677e target/arm: Implement FPSCR.LTPSIZE for M-profile LOB extension 
If the M-profile low-overhead-branch extension is implemented, FPSCR
bits [18:16] are a new field LTPSIZE. If MVE is not implemented
(currently always true for us) then this field always reads as 4 and
ignores writes.

These bits used to be the vector-length field for the old
short-vector extension, so we need to take care that they are not
misinterpreted as setting vec_len. We do this with a rearrangement
of the vfp_set_fpscr() code that deals with vec_len, vec_stride
and also the QC bit; this obviates the need for the M-profile
only masking step that we used to have at the start of the function.

We provide a new field in CPUState for LTPSIZE, even though this
will always be 4, in preparation for MVE, so we don't have to
come back later and split it out of the vfp.xregs[FPSCR] value.
(This state struct field will be saved and restored as part of
the FPSCR value via the vmstate_fpscr in machine.c.)

Backports 8128c8e8cc9489a8387c74075974f86dc0222e7f
2021-03-01 20:36:02 -05:00
..
accel target/arm: Add sve infrastructure for page lookup 2021-02-25 20:28:23 -05:00
crypto crypto: Clean up includes 2018-02-19 00:47:40 -05:00
default-configs target/riscv: Initial introduction of the RISC-V target 2019-03-08 21:46:10 -05:00
docs docs/devel/memory.txt: Document _with_attrs accessors 2018-10-04 04:46:26 -04:00
fpu softfloat: Define misc operations for bfloat16 2021-02-27 16:41:46 -05:00
hw target/arm: Set instance_align on CPUARM TypeInfo 2021-03-01 18:58:44 -05:00
include target/arm: Set instance_align on CPUARM TypeInfo 2021-03-01 18:58:44 -05:00
qapi qapi: Rewrite string-input-visitor's integer and list parsing 2018-12-18 04:57:25 -05:00
qobject qstring: Move qstring_from_substr()'s @end one to the right 2018-08-02 21:24:19 -04:00
qom target/arm: Set instance_align on CPUARM TypeInfo 2021-03-01 18:58:44 -05:00
scripts decodetree: Fix codegen for non-overlapping group inside overlapping group 2021-03-01 20:14:19 -05:00
target target/arm: Implement FPSCR.LTPSIZE for M-profile LOB extension 2021-03-01 20:36:02 -05:00
tcg tcg: Remove TCG_TARGET_HAS_cmp_vec 2021-03-01 19:49:02 -05:00
util util/cutils: Turn FIXME comment into QEMU_BUILD_BUG_ON() 2020-01-14 08:04:30 -05:00
aarch64.h target/arm: AArch32 VCVT fixed-point to float is always round-to-nearest 2021-03-01 20:04:31 -05:00
aarch64eb.h target/arm: AArch32 VCVT fixed-point to float is always round-to-nearest 2021-03-01 20:04:31 -05:00
accel.c target/arm: Set instance_align on CPUARM TypeInfo 2021-03-01 18:58:44 -05:00
arm.h target/arm: AArch32 VCVT fixed-point to float is always round-to-nearest 2021-03-01 20:04:31 -05:00
armeb.h target/arm: AArch32 VCVT fixed-point to float is always round-to-nearest 2021-03-01 20:04:31 -05:00
CODING_STYLE.rst docs: split the CODING_STYLE doc into distinct groups 2019-11-28 02:54:44 -05:00
configure configure: Support -static-pie if requested 2020-04-30 07:09:34 -04:00
COPYING
COPYING.LIB
cpus.c Include qapi/error.h exactly where needed 2018-03-07 12:26:38 -05:00
exec.c Memory: Enable writeback for given memory region 2020-01-14 07:44:24 -05:00
gen_all_header.sh
glib_compat.c target/arm: Add VHE system register redirection and aliasing 2020-03-21 15:57:03 -04:00
header_gen.py target/arm: AArch32 VCVT fixed-point to float is always round-to-nearest 2021-03-01 20:04:31 -05:00
ioport.c hw: remove pio_addr_t 2018-02-24 02:43:16 -05:00
LICENSE
m68k.h target/arm: AArch32 VCVT fixed-point to float is always round-to-nearest 2021-03-01 20:04:31 -05:00
Makefile Makefile: Rename targets for make recursion 2019-08-08 17:26:49 -04:00
Makefile.objs qapi: Move qapi-schema.json to qapi/, rename generated files 2018-03-09 11:35:11 -05:00
Makefile.target configure: Remove old -fno-gcse workaround for GCC 4.6.x and 4.7.[012] 2018-12-18 03:52:36 -05:00
memory.c target/arm: Set instance_align on CPUARM TypeInfo 2021-03-01 18:58:44 -05:00
memory_ldst.inc.c memory: Single byte swap along the I/O path 2020-01-07 19:12:04 -05:00
memory_mapping.c include/qemu/osdep.h: Don't include qapi/error.h 2018-02-21 23:08:18 -05:00
mips.h target/arm: AArch32 VCVT fixed-point to float is always round-to-nearest 2021-03-01 20:04:31 -05:00
mips64.h target/arm: AArch32 VCVT fixed-point to float is always round-to-nearest 2021-03-01 20:04:31 -05:00
mips64el.h target/arm: AArch32 VCVT fixed-point to float is always round-to-nearest 2021-03-01 20:04:31 -05:00
mipsel.h target/arm: AArch32 VCVT fixed-point to float is always round-to-nearest 2021-03-01 20:04:31 -05:00
powerpc.h target/arm: AArch32 VCVT fixed-point to float is always round-to-nearest 2021-03-01 20:04:31 -05:00
qemu-timer.c timer/cpus: fix some typos and update some comments 2018-02-25 23:21:57 -05:00
riscv32.h target/arm: AArch32 VCVT fixed-point to float is always round-to-nearest 2021-03-01 20:04:31 -05:00
riscv64.h target/arm: AArch32 VCVT fixed-point to float is always round-to-nearest 2021-03-01 20:04:31 -05:00
rules.mak build-sys: silence make by default or V=0 2018-03-06 08:58:03 -05:00
sparc.h target/arm: AArch32 VCVT fixed-point to float is always round-to-nearest 2021-03-01 20:04:31 -05:00
sparc64.h target/arm: AArch32 VCVT fixed-point to float is always round-to-nearest 2021-03-01 20:04:31 -05:00
unicorn_common.h tcg: Move sorted_args into TCGArgConstraint.sort_index 2021-03-01 19:33:45 -05:00
VERSION Open 5.2 development tree 2021-02-25 23:52:17 -05:00
vl.c Use cpu_create(type) instead of cpu_init(cpu_model) 2018-03-20 14:20:30 -04:00
vl.h
x86_64.h target/arm: AArch32 VCVT fixed-point to float is always round-to-nearest 2021-03-01 20:04:31 -05:00