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f4ae6c8cbd
qemu-e2k/target/arm
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Peter Maydell f4ae6c8cbd target/arm: Implement MVE long shifts by immediate 
The MVE extension to v8.1M includes some new shift instructions which
sit entirely within the non-coprocessor part of the encoding space
and which operate only on general-purpose registers.  They take up
the space which was previously UNPREDICTABLE MOVS and ORRS encodings
with Rm == 13 or 15.

Implement the long shifts by immediate, which perform shifts on a
pair of general-purpose registers treated as a 64-bit quantity, with
an immediate shift count between 1 and 32.

Awkwardly, because the MOVS and ORRS trans functions do not UNDEF for
the Rm==13,15 case, we need to explicitly emit code to UNDEF for the
cases where v8.1M now requires that.  (Trying to change MOVS and ORRS
is too difficult, because the functions that generate the code are
shared between a dozen different kinds of arithmetic or logical
instruction for all A32, T16 and T32 encodings, and for some insns
and some encodings Rm==13,15 are valid.)

We make the helper functions we need for UQSHLL and SQSHLL take
a 32-bit value which the helper casts to int8_t because we'll need
these helpers also for the shift-by-register insns, where the shift
count might be < 0 or > 32.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210628135835.6690-16-peter.maydell@linaro.org
2021-07-02 11:48:37 +01:00
..
a32-uncond.decode arm tcg cpus: Fix Lesser GPL version number 2020-11-15 16:42:14 +01:00
a32.decode arm tcg cpus: Fix Lesser GPL version number 2020-11-15 16:42:14 +01:00
arch_dump.c target/arm: add spaces around operator 2020-11-10 11:03:47 +00:00
arm_ldst.h arm tcg cpus: Fix Lesser GPL version number 2020-11-15 16:42:14 +01:00
arm-powerctl.c arm/arm-powerctl: rebuild hflags after setting CP15 bits in arm_set_cpu_on() 2019-12-20 14:03:00 +00:00
arm-powerctl.h target/arm/arm-powerctl: Add new arm_set_cpu_on_and_reset() 2019-02-28 11:03:04 +00:00
cpu64.c target/arm: Implement MTE3 2021-06-24 14:58:48 +01:00
cpu_tcg.c target/arm: Enable BFloat16 extensions 2021-06-03 16:43:26 +01:00
cpu-param.h linux-user/aarch64: Implement PR_TAGGED_ADDR_ENABLE 2021-02-16 13:06:16 +00:00
cpu-qom.h qom: Remove module_obj_name parameter from OBJECT_DECLARE* macros 2020-09-18 14:12:32 -04:00
cpu.c target/arm: Enable BFloat16 extensions 2021-06-03 16:43:26 +01:00
cpu.h target/arm: Add isar_feature_{aa32, aa64, aa64_sve}_bf16 2021-06-03 16:43:25 +01:00
crypto_helper.c arm tcg cpus: Fix Lesser GPL version number 2020-11-15 16:42:14 +01:00
debug_helper.c target/arm: Stop assuming DBGDIDR always exists 2020-02-21 16:07:01 +00:00
gdbstub64.c arm tcg cpus: Fix Lesser GPL version number 2020-11-15 16:42:14 +01:00
gdbstub.c target/arm: use official org.gnu.gdb.aarch64.sve layout for registers 2021-01-18 10:05:06 +00:00
helper-a64.c target/arm: Check NaN mode before silencing NaN 2021-07-02 11:48:36 +01:00
helper-a64.h target/arm: Merge mte_check1, mte_checkN 2021-04-30 11:16:49 +01:00
helper-mve.h target/arm: Implement MVE long shifts by immediate 2021-07-02 11:48:37 +01:00
helper-sve.h target/arm: Implement vector float32 to bfloat16 conversion 2021-06-03 16:43:26 +01:00
helper.c target/arm: Add ID_AA64ZFR0 fields and isar_feature_aa64_sve2 2021-05-25 16:01:43 +01:00
helper.h target/arm: Implement MVE VLDR/VSTR (non-widening forms) 2021-06-21 16:49:38 +01:00
idau.h Use DECLARE_*CHECKER* macros 2020-09-09 09:27:09 -04:00
internals.h target/arm: Implement MVE VLDR/VSTR (non-widening forms) 2021-06-21 16:49:38 +01:00
iwmmxt_helper.c arm tcg cpus: Fix Lesser GPL version number 2020-11-15 16:42:14 +01:00
kvm64.c target/arm: Use acpi_ghes_present() to see if we report ACPI memory errors 2021-06-21 16:49:37 +01:00
kvm_arm.h hw/arm/virt: KVM: The IPA lower bound is 32 2021-03-12 12:47:11 +00:00
kvm-consts.h target/arm: Remove no-longer-reachable 32-bit KVM code 2020-09-14 14:23:19 +01:00
kvm-stub.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
kvm.c hw/arm/virt: KVM: The IPA lower bound is 32 2021-03-12 12:47:11 +00:00
m_helper.c target/arm: Handle VPR semantics in existing code 2021-06-16 14:33:52 +01:00
m-nocp.decode target/arm: Don't NOCP fault for FPCXT_NS accesses 2021-06-21 16:49:37 +01:00
machine.c target/arm: Make FPSCR.LTPSIZE writable for MVE 2021-06-03 16:43:25 +01:00
meson.build target/arm: Implement MVE VLDR/VSTR (non-widening forms) 2021-06-21 16:49:38 +01:00
monitor.c target/arm: Add cpu properties to control pauth 2021-01-19 14:38:51 +00:00
mte_helper.c target/arm: Implement MTE3 2021-06-24 14:58:48 +01:00
mve_helper.c target/arm: Implement MVE long shifts by immediate 2021-07-02 11:48:37 +01:00
mve.decode target/arm: Implement MVE VADDLV 2021-07-02 11:48:37 +01:00
neon_helper.c target/arm: Split out saturating/rounding shifts from neon 2021-05-25 16:01:43 +01:00
neon-dp.decode target/arm: Implement vector float32 to bfloat16 conversion 2021-06-03 16:43:26 +01:00
neon-ls.decode target/arm: Fix decode of align in VLDST_single 2021-04-30 11:16:49 +01:00
neon-shared.decode target/arm: Implement bfloat widening fma (indexed) 2021-06-03 16:43:26 +01:00
op_addsub.h
op_helper.c target/arm: use raise_exception_ra for stack limit exception 2021-06-03 16:43:25 +01:00
pauth_helper.c target/arm: Implement an IMPDEF pauth algorithm 2021-01-19 14:38:51 +00:00
psci.c sysemu: Split sysemu/runstate.h off sysemu/sysemu.h 2019-08-16 13:37:36 +02:00
sve_helper.c bitops.h: Provide hswap32(), hswap64(), wswap64() swapping operations 2021-06-16 14:33:52 +01:00
sve.decode target/arm: Implement bfloat widening fma (indexed) 2021-06-03 16:43:26 +01:00
syndrome.h target/arm: Split out syndrome.h from internals.h 2021-02-16 13:16:18 +00:00
t16.decode arm tcg cpus: Fix Lesser GPL version number 2020-11-15 16:42:14 +01:00
t32.decode target/arm: Implement MVE long shifts by immediate 2021-07-02 11:48:37 +01:00
tlb_helper.c target/arm: Set ARMMMUFaultInfo.level in user-only arm_cpu_tlb_fill 2021-03-23 14:07:55 +00:00
trace-events docs: fix references to docs/devel/tracing.rst 2021-06-02 06:51:09 +02:00
trace.h trace: switch position of headers to what Meson requires 2020-08-21 06:18:24 -04:00
translate-a32.h target/arm: Make VMOV scalar <-> gpreg beatwise for MVE 2021-06-24 14:58:48 +01:00
translate-a64.c target/arm: Use dup_const() instead of bitfield_replicate() 2021-07-02 11:48:36 +01:00
translate-a64.h target/arm: Implement SVE2 XAR 2021-05-25 16:01:44 +01:00
translate-m-nocp.c target/arm: Handle FPU check for FPCXT_NS insns via vfp_access_check_m() 2021-06-21 16:49:38 +01:00
translate-mve.c target/arm: Implement MVE VADDLV 2021-07-02 11:48:37 +01:00
translate-neon.c target/arm: Implement MVE vector shift right by immediate insns 2021-07-02 11:48:37 +01:00
translate-sve.c target/arm: Implement bfloat widening fma (indexed) 2021-06-03 16:43:26 +01:00
translate-vfp.c target/arm: Make VMOV scalar <-> gpreg beatwise for MVE 2021-06-24 14:58:48 +01:00
translate.c target/arm: Implement MVE long shifts by immediate 2021-07-02 11:48:37 +01:00
translate.h target/arm: Implement MVE long shifts by immediate 2021-07-02 11:48:37 +01:00
vec_helper.c target/arm: Move expand_pred_b() data to vec_helper.c 2021-06-16 14:33:52 +01:00
vec_internal.h target/arm: Move expand_pred_b() data to vec_helper.c 2021-06-16 14:33:52 +01:00
vfp_helper.c target/arm: Check NaN mode before silencing NaN 2021-07-02 11:48:36 +01:00
vfp-uncond.decode arm tcg cpus: Fix Lesser GPL version number 2020-11-15 16:42:14 +01:00
vfp.decode target/arm: Don't NOCP fault for FPCXT_NS accesses 2021-06-21 16:49:37 +01:00