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unicorn/qemu/target/arm
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Peter Maydell 5c93f43eb9 target/arm: Implement ARMv8.1-PMU extension 
The ARMv8.1-PMU extension requires:
* the evtCount field in PMETYPER<n>_EL0 is 16 bits, not 10
* MDCR_EL2.HPMD allows event counting to be disabled at EL2
* two new required events, STALL_FRONTEND and STALL_BACKEND
* ID register bits in ID_AA64DFR0_EL1 and ID_DFR0

We already implement the 16-bit evtCount field and the
HPMD bit, so all that is missing is the two new events:
STALL_FRONTEND
"counts every cycle counted by the CPU_CYCLES event on which no
operation was issued because there are no operations available
to issue to this PE from the frontend"
STALL_BACKEND
"counts every cycle counted by the CPU_CYCLES event on which no
operation was issued because the backend is unable to accept
any available operations from the frontend"

QEMU never stalls in this sense, so our implementation is trivial:
always return a zero count.

Backports commit 0727f63b1ecf765ebc48266f616f8fc362dc7fbc from qemu
2020-03-21 18:34:33 -04:00
..
a32-uncond.decode target/arm: Convert Unallocated memory hint 2019-11-28 02:47:41 -05:00
a32.decode target/arm: Convert SVC 2019-11-28 02:46:55 -05:00
arm-powerctl.c arm/arm-powerctl: set NSACR.{CP11, CP10} bits in arm_set_cpu_on() 2020-01-07 18:10:29 -05:00
arm-powerctl.h
arm_ldst.h
cpu-param.h target/arm: Add mmu_idx for EL1 and EL2 w/ PAN enabled 2020-03-21 17:12:16 -04:00
cpu-qom.h target/arm: Add the hypervisor virtual counter 2020-03-21 15:35:36 -04:00
cpu.c target/arm: Move DBGDIDR into ARMISARegisters 2020-03-21 18:29:01 -04:00
cpu.h target/arm: Implement ARMv8.1-PMU extension 2020-03-21 18:34:33 -04:00
cpu64.c target/arm: Move DBGDIDR into ARMISARegisters 2020-03-21 18:29:01 -04:00
crypto_helper.c target/arm/cpu and crypto_helper: Correct bad merge and adjust to qemu code style 2018-03-12 11:57:24 -04:00
debug_helper.c target/arm: Stop assuming DBGDIDR always exists 2020-03-21 18:26:24 -04:00
helper-a64.c target/arm: Introduce aarch64_pstate_valid_mask 2020-03-21 17:26:00 -04:00
helper-a64.h target/arm: check CF_PARALLEL instead of parallel_cpus 2019-05-04 22:44:32 -04:00
helper-sve.h target/arm: Rewrite vector gather first-fault loads 2018-10-08 14:15:15 -04:00
helper.c target/arm: Implement ARMv8.1-PMU extension 2020-03-21 18:34:33 -04:00
helper.h target/arm: Handle trapping to EL2 of AArch32 VMRS instructions 2020-01-07 18:04:16 -05:00
internals.h target/arm: Move DBGDIDR into ARMISARegisters 2020-03-21 18:29:01 -04:00
iwmmxt_helper.c target/arm: Untabify iwmmxt_helper.c 2018-08-25 04:33:44 -04:00
kvm-consts.h
m_helper.c target/arm: only update pc after semihosting completes 2020-01-14 08:28:25 -05:00
Makefile.objs target/arm: Add skeleton for T16 decodetree 2019-11-28 02:50:27 -05:00
neon_helper.c target/arm: Use tcg_gen_abs_i64 and tcg_gen_gvec_abs 2019-05-16 16:43:02 -04:00
op_addsub.h
op_helper.c target/arm: Remove CPSR_RESERVED 2020-03-21 17:24:21 -04:00
pauth_helper.c target/arm: Use bit 55 explicitly for pauth 2020-03-21 17:59:06 -04:00
psci.c fix WFI/WFE length in syndrome register 2018-03-05 11:21:51 -05:00
sve.decode target/arm: Sychronize with qemu 2019-04-18 04:49:11 -04:00
sve_helper.c tcg: Use tlb_fill probe from tlb_vaddr_to_host 2019-05-16 18:27:03 -04:00
t16.decode target/arm: Convert T16, long branches 2019-11-28 02:53:54 -05:00
t32.decode target/arm: Convert TT 2019-11-28 02:48:06 -05:00
tlb_helper.c target/arm: Return correct IL bit in merge_syn_data_abort 2020-03-21 12:08:05 -04:00
translate-a64.c target/arm: Flush high bits of sve register after AdvSIMD INS 2020-03-21 17:58:09 -04:00
translate-a64.h tcg: TCGMemOp is now accelerator independent MemOp 2019-11-28 03:01:12 -05:00
translate-sve.c tcg: TCGMemOp is now accelerator independent MemOp 2019-11-28 03:01:12 -05:00
translate-vfp.inc.c target/arm: Handle trapping to EL2 of AArch32 VMRS instructions 2020-01-07 18:04:16 -05:00
translate.c target/arm: Add _aa32_ to isar_feature functions testing 32-bit ID registers 2020-03-21 18:08:23 -04:00
translate.h target/arm: Update get_a64_user_mem_index for VHE 2020-03-21 16:33:52 -04:00
unicorn.h
unicorn_aarch64.c unicorn_aarch64: Use aa64_vfp_qreg instead of aa32_vfp_dreg 2018-09-03 07:47:40 +01:00
unicorn_arm.c Add implementation of access to the ARM SPSR register. (#1178) 2020-01-14 09:57:55 -05:00
vec_helper.c target/arm: Add helpers for FMLAL 2019-02-28 15:31:48 -05:00
vfp-uncond.decode target/arm: Convert VCVTA/VCVTN/VCVTP/VCVTM to decodetree 2019-06-13 16:54:42 -04:00
vfp.decode target/arm: Use vfp_expand_imm() for AArch32 VFP VMOV_imm 2019-06-25 18:20:19 -05:00
vfp_helper.c target/arm: Add isar_feature_any_fp16 and document naming/usage conventions 2020-03-21 18:12:02 -04:00