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unicorn/qemu/target/arm
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Daniel Müller 642a683d7a target/arm: Correctly initialize MDCR_EL2.HPMN 
When working with performance monitoring counters, we look at
MDCR_EL2.HPMN as part of the check whether a counter is enabled. This
check fails, because MDCR_EL2.HPMN is reset to 0, meaning that no
counters are "enabled" for < EL2.
That's in violation of the Arm specification, which states that

> On a Warm reset, this field [MDCR_EL2.HPMN] resets to the value in
> PMCR_EL0.N

That's also what a comment in the code acknowledges, but the necessary
adjustment seems to have been forgotten when support for more counters
was added.
This change fixes the issue by setting the reset value to PMCR.N, which
is four.

Backports d3c1183ffeb71ca3a783eae3d7e1c51e71e8a621
2021-03-04 18:34:06 -05:00
..
a32-uncond.decode arm tcg cpus: Fix Lesser GPL version number 2021-03-02 13:30:35 -05:00
a32.decode arm tcg cpus: Fix Lesser GPL version number 2021-03-02 13:30:35 -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: Factor out ARM on/off PSCI control functions 2018-03-01 23:31:47 -05:00
arm_ldst.h arm tcg cpus: Fix Lesser GPL version number 2021-03-02 13:30:35 -05:00
cpu-param.h target/arm: Don't use a TLB for ARMMMUIdx_Stage2 2020-05-07 08:40:06 -04:00
cpu-qom.h arm: Fix typo in AARCH64_CPU_GET_CLASS definition 2021-03-01 18:03:29 -05:00
cpu.c target/arm: Set ID_PFR0.DIT to 1 for max 32-bit CPU 2021-03-04 18:31:36 -05:00
cpu.h target/arm: Add support for FEAT_DIT, Data Independent Timing 2021-03-04 18:19:32 -05:00
cpu64.c target/arm: Set ID_AA64PFR0.DIT and ID_PFR0.DIT to 1 for max AA64 CPU 2021-03-04 18:30:59 -05:00
crypto_helper.c arm tcg cpus: Fix Lesser GPL version number 2021-03-02 13:30:35 -05:00
debug_helper.c target/arm: Stop assuming DBGDIDR always exists 2020-03-21 18:26:24 -04:00
helper-a64.c target/arm: Support AA32 DIT by moving PSTATE_SS from cpsr into env->pstate 2021-03-04 18:24:57 -05:00
helper-a64.h arm tcg cpus: Fix Lesser GPL version number 2021-03-02 13:30:35 -05:00
helper-sve.h arm tcg cpus: Fix Lesser GPL version number 2021-03-02 13:30:35 -05:00
helper.c target/arm: Correctly initialize MDCR_EL2.HPMN 2021-03-04 18:34:06 -05:00
helper.h target/arm: Fix neon VTBL/VTBX for len > 1 2021-03-02 13:23:13 -05:00
internals.h target/arm: Add support for FEAT_DIT, Data Independent Timing 2021-03-04 18:19:32 -05:00
iwmmxt_helper.c arm tcg cpus: Fix Lesser GPL version number 2021-03-02 13:30:35 -05:00
kvm-consts.h arm: better stub version for MISMATCH_CHECK 2018-03-02 00:13:45 -05:00
m-nocp.decode target/arm: Implement new v8.1M VLLDM and VLSTM encodings 2021-03-03 19:01:33 -05:00
m_helper.c target/arm/m_helper: Silence GCC 10 maybe-uninitialized error 2021-03-04 15:16:55 -05:00
Makefile.objs target/arm: Do M-profile NOCP checks early and via decodetree 2021-02-26 11:17:23 -05:00
mte_helper.c target/arm: Fix reported EL for mte_check_fail 2021-03-01 20:10:44 -05:00
neon-dp.decode arm tcg cpus: Fix Lesser GPL version number 2021-03-02 13:30:35 -05:00
neon-ls.decode arm tcg cpus: Fix Lesser GPL version number 2021-03-02 13:30:35 -05:00
neon-shared.decode arm tcg cpus: Fix Lesser GPL version number 2021-03-02 13:30:35 -05:00
neon_helper.c target/arm: Convert Neon VADD, VSUB, VABD 3-reg-same insns to decodetree 2020-05-15 23:26:51 -04:00
op_addsub.h Move target-* CPU file into a target/ folder 2018-03-01 22:50:58 -05:00
op_helper.c target/arm: Support AA32 DIT by moving PSTATE_SS from cpsr into env->pstate 2021-03-04 18:24:57 -05:00
pauth_helper.c target/arm: Implement an IMPDEF pauth algorithm 2021-03-04 13:38:22 -05:00
psci.c fix WFI/WFE length in syndrome register 2018-03-05 11:21:51 -05:00
sve.decode arm tcg cpus: Fix Lesser GPL version number 2021-03-02 13:30:35 -05:00
sve_helper.c target/arm: Update REV, PUNPK for pred_desc 2021-03-04 15:15:47 -05:00
t16.decode arm tcg cpus: Fix Lesser GPL version number 2021-03-02 13:30:35 -05:00
t32.decode target/arm: Implement M-profile "minimal RAS implementation" 2021-03-03 19:07:27 -05:00
tlb_helper.c target/arm: set HPFAR_EL2.NS on secure stage 2 faults 2021-03-04 14:54:33 -05:00
translate-a64.c target/arm: Add support for FEAT_DIT, Data Independent Timing 2021-03-04 18:19:32 -05:00
translate-a64.h arm tcg cpus: Fix Lesser GPL version number 2021-03-02 13:30:35 -05:00
translate-neon.inc.c arm tcg cpus: Fix Lesser GPL version number 2021-03-02 13:30:35 -05:00
translate-sve.c target/arm: Update REV, PUNPK for pred_desc 2021-03-04 15:15:47 -05:00
translate-vfp.inc.c target/arm: Implement FPCXT_NS fp system register 2021-03-03 20:02:36 -05:00
translate.c target/arm: Implement SCR_EL2.EEL2 2021-03-04 15:03:08 -05:00
translate.h target/arm: Rearrange {sve,fp}_check_access assert 2021-02-26 13:56:27 -05:00
unicorn.h Move target-* CPU file into a target/ folder 2018-03-01 22:50:58 -05:00
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 arm/translate: Do not tracecode when in an IT block 2021-02-07 19:14:32 +00:00
vec_helper.c arm tcg cpus: Fix Lesser GPL version number 2021-03-02 13:30:35 -05:00
vec_internal.h arm tcg cpus: Fix Lesser GPL version number 2021-03-02 13:30:35 -05:00
vfp-uncond.decode arm tcg cpus: Fix Lesser GPL version number 2021-03-02 13:30:35 -05:00
vfp.decode target/arm: Implement VLDR/VSTR system register 2021-03-03 18:42:05 -05:00
vfp_helper.c target/arm: Implement FPSCR.LTPSIZE for M-profile LOB extension 2021-03-01 20:36:02 -05:00