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xemu/target/arm
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Peter Maydell 02bc236d01 target/arm: Use correct ID register check for aa32_fp16_arith 
The aa32_fp16_arith feature check function currently looks at the
AArch64 ID_AA64PFR0 register. This is (as the comment notes) not
correct. The bogus check was put in mostly to allow testing of the
fp16 variants of the VCMLA instructions and it was something of
a mistake that we allowed them to exist in master.

Switch the feature check function to testing VMFR1.FPHP, which is
what it ought to be.

This will remove emulation of the VCMLA and VCADD insns from
AArch32 code running on an AArch64 '-cpu max' using system emulation.
(They were never enabled for aarch32 linux-user and system-emulation.)
Since we weren't advertising their existence via the AArch32 ID
register, well-behaved guests wouldn't have been using them anyway.

Once we have implemented all the AArch32 support for the FP16 extension
we will advertise it in the MVFR1 ID register field, which will reenable
these insns along with all the others.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200828183354.27913-3-peter.maydell@linaro.org
 		2020-09-01 11:19:32 +01:00
..
a32-uncond.decode target/arm: Convert Unallocated memory hint 2019-09-05 13:23:03 +01:00
a32.decode target/arm: Convert A32 coprocessor insns to decodetree 2020-08-24 10:02:07 +01:00
arch_dump.c target/arm: Add isar_feature_aa32_vfp_simd 2020-02-28 16:14:57 +00:00
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
arm-semi.c target/arm/arm-semi: Don't let the guest close stdin/stdout/stderr 2020-01-30 16:02:01 +00:00
arm_ldst.h target/arm: fetch code with translator_ld 2019-10-28 15:12:38 +00:00
cpu-param.h target/arm: Don't use a TLB for ARMMMUIdx_Stage2 2020-05-04 10:32:46 +01:00
cpu-qom.h target/arm: Make cpu_register() available for other files 2020-04-30 15:35:41 +01:00
cpu.c target/arm: Implement FPST_STD_F16 fpstatus 2020-08-24 10:15:11 +01:00
cpu.h target/arm: Use correct ID register check for aa32_fp16_arith 2020-09-01 11:19:32 +01:00
cpu64.c hw/arm/virt: Enable MTE via a machine property 2020-07-20 11:35:15 +01:00
cpu_tcg.c target/arm: Use correct GDB XML for M-profile cores 2020-05-14 15:03:08 +01:00
crypto_helper.c target/arm: Split helper_crypto_sm3tt 2020-06-05 17:23:09 +01:00
debug_helper.c target/arm: Stop assuming DBGDIDR always exists 2020-02-21 16:07:01 +00:00
gdbstub.c target/arm: Use correct GDB XML for M-profile cores 2020-05-14 15:03:08 +01:00
gdbstub64.c gdbstub: extend GByteArray to read register helpers 2020-03-17 17:38:38 +00:00
helper-a64.c target/arm: Remove local definitions of float constants 2020-09-01 11:19:32 +01:00
helper-a64.h target/arm: Add helper_mte_check_zva 2020-06-26 14:31:12 +01:00
helper-sve.h target/arm: Merge helper_sve_clr_* and helper_sve_movz_* 2020-08-28 10:02:48 +01:00
helper.c target/arm: Clarify HCR_EL2 ARMCPRegInfo type 2020-08-28 10:02:44 +01:00
helper.h target/arm: Convert sq{, r}dmulh to gvec for aa64 advsimd 2020-08-28 10:02:50 +01:00
idau.h qom: make interface types abstract 2018-12-11 15:45:22 -02:00
internals.h target/arm: Always pass cacheattr to get_phys_addr 2020-06-26 14:31:12 +01:00
iwmmxt_helper.c target/arm: Untabify iwmmxt_helper.c 2018-08-24 13:17:48 +01:00
kvm-consts.h arm: add trailing ; after MISMATCH_CHECK 2017-02-01 03:37:18 +02:00
kvm-stub.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
kvm.c target/arm: kvm: Handle misconfigured dabt injection 2020-07-03 16:59:42 +01:00
kvm32.c target/arm: kvm: Handle misconfigured dabt injection 2020-07-03 16:59:42 +01:00
kvm64.c target/arm: kvm: Handle misconfigured dabt injection 2020-07-03 16:59:42 +01:00
kvm_arm.h target/arm: kvm: Handle misconfigured dabt injection 2020-07-03 16:59:42 +01:00
m-nocp.decode target/arm: Do M-profile NOCP checks early and via decodetree 2020-08-24 10:05:12 +01:00
m_helper.c target/arm: Always pass cacheattr to get_phys_addr 2020-06-26 14:31:12 +01:00
machine.c target/arm: Add isar_feature_aa64_fp_simd, isar_feature_aa32_vfp 2020-02-28 16:14:57 +00:00
meson.build target/arm: Do M-profile NOCP checks early and via decodetree 2020-08-24 10:05:12 +01:00
monitor.c error: Eliminate error_propagate() with Coccinelle, part 1 2020-07-10 15:18:08 +02:00
mte_helper.c target/arm: Fill in the WnR syndrome bit in mte_check_fail 2020-08-28 10:02:45 +01:00
neon-dp.decode target/arm: Convert Neon VTRN to decodetree 2020-06-23 11:39:47 +01:00
neon-ls.decode target/arm: Convert Neon 'load/store single structure' to decodetree 2020-05-04 12:57:56 +01:00
neon-shared.decode target/arm: Convert VFM[AS]L (scalar) to decodetree 2020-05-04 12:57:56 +01:00
neon_helper.c target/arm: Convert Neon VADD, VSUB, VABD 3-reg-same insns to decodetree 2020-05-14 15:03:09 +01:00
op_addsub.h Move target-* CPU file into a target/ folder 2016-12-20 21:52:12 +01:00
op_helper.c target/arm: Implement LDG, STG, ST2G instructions 2020-06-26 14:31:12 +01:00
pauth_helper.c target/arm: Fix AddPAC error indication 2020-08-03 17:55:03 +01:00
psci.c sysemu: Split sysemu/runstate.h off sysemu/sysemu.h 2019-08-16 13:37:36 +02:00
sve.decode target/arm: Tidy SVE tszimm shift formats 2020-08-28 10:02:49 +01:00
sve_helper.c target/arm: Merge helper_sve_clr_* and helper_sve_movz_* 2020-08-28 10:02:48 +01:00
t16.decode target/arm: Convert T16, long branches 2019-09-05 13:23:04 +01:00
t32.decode target/arm: Convert T32 coprocessor insns to decodetree 2020-08-24 10:15:08 +01:00
tlb_helper.c target/arm: Cache the Tagged bit for a page in MemTxAttrs 2020-06-26 14:31:12 +01:00
trace-events trace-events: Shorten file names in comments 2019-03-22 16:18:07 +00:00
trace.h trace: switch position of headers to what Meson requires 2020-08-21 06:18:24 -04:00
translate-a64.c target/arm: Convert sq{, r}dmulh to gvec for aa64 advsimd 2020-08-28 10:02:50 +01:00
translate-a64.h target/arm: Replace A64 get_fpstatus_ptr() with generic fpstatus_ptr() 2020-08-24 10:15:11 +01:00
translate-neon.c.inc target/arm: Use correct FPST for VCMLA, VCADD on fp16 2020-08-24 10:15:12 +01:00
translate-sve.c target/arm: Remove local definitions of float constants 2020-09-01 11:19:32 +01:00
translate-vfp.c.inc target/arm: Make A32/T32 use new fpstatus_ptr() API 2020-08-24 10:15:11 +01:00
translate.c target/arm: Make A32/T32 use new fpstatus_ptr() API 2020-08-24 10:15:11 +01:00
translate.h target/arm: Rearrange {sve,fp}_check_access assert 2020-08-28 10:02:47 +01:00
vec_helper.c target/arm: Convert sq{, r}dmulh to gvec for aa64 advsimd 2020-08-28 10:02:50 +01:00
vec_internal.h target/arm: Convert aes and sm4 to gvec helpers 2020-06-05 17:23:09 +01:00
vfp-uncond.decode target/arm: Split VMINMAXNM decode 2020-02-28 16:14:57 +00:00
vfp.decode target/arm: Do M-profile NOCP checks early and via decodetree 2020-08-24 10:05:12 +01:00
vfp_helper.c target/arm: Remove local definitions of float constants 2020-09-01 11:19:32 +01:00