unicorn/qemu/target/arm
Peter Maydell a6c9c87a5d target/arm: Stop assuming DBGDIDR always exists
The AArch32 DBGDIDR defines properties like the number of
breakpoints, watchpoints and context-matching comparators. On an
AArch64 CPU, the register may not even exist if AArch32 is not
supported at EL1.

Currently we hard-code use of DBGDIDR to identify the number of
breakpoints etc; this works for all our TCG CPUs, but will break if
we ever add an AArch64-only CPU. We also have an assert() that the
AArch32 and AArch64 registers match, which currently works only by
luck for KVM because we don't populate either of these ID registers
from the KVM vCPU and so they are both zero.

Clean this up so we have functions for finding the number
of breakpoints, watchpoints and context comparators which look
in the appropriate ID register.

This allows us to drop the "check that AArch64 and AArch32 agree
on the number of breakpoints etc" asserts:
* we no longer look at the AArch32 versions unless that's the
right place to be looking
* it's valid to have a CPU (eg AArch64-only) where they don't match
* we shouldn't have been asserting the validity of ID registers
in a codepath used with KVM anyway

Backports commit 88ce6c6ee85d902f59dc65afc3ca86b34f02b9ed from qemu
2020-03-21 18:26:24 -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_ldst.h
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
cpu64.c target/arm: Add _aa64_ and _any_ versions of pmu_8_1 isar checks 2020-03-21 18:24:00 -04:00
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: Add _aa64_ and _any_ versions of pmu_8_1 isar checks 2020-03-21 18:24:00 -04:00
cpu.h target/arm: Stop assuming DBGDIDR always exists 2020-03-21 18:26:24 -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: Stop assuming DBGDIDR always exists 2020-03-21 18:26:24 -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: Stop assuming DBGDIDR always exists 2020-03-21 18:26:24 -04:00
iwmmxt_helper.c target/arm: Untabify iwmmxt_helper.c 2018-08-25 04:33:44 -04:00
kvm-consts.h arm: better stub version for MISMATCH_CHECK 2018-03-02 00:13:45 -05:00
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_helper.c tcg: Use tlb_fill probe from tlb_vaddr_to_host 2019-05-16 18:27:03 -04:00
sve.decode target/arm: Sychronize with qemu 2019-04-18 04:49:11 -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_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
unicorn.h
vec_helper.c target/arm: Add helpers for FMLAL 2019-02-28 15:31:48 -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
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