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target/arm: Introduce core_to_aa64_mmu_idx

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If by context we know that we're in AArch64 mode, we need not
test for M-profile when reconstructing the full ARMMMUIdx.

Backports commit 20dc67c947a691fa9df05e76aec6df50204b4b94 from qemu
This commit is contained in:
Richard Henderson 2020-03-22 03:28:07 -04:00 committed by Lioncash
parent d3a5843aeb
commit a22a2a8b71
2 changed files with 7 additions and 1 deletions
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6
qemu/target/arm/internals.h
View file

@ -785,6 +785,12 @@ static inline ARMMMUIdx core_to_arm_mmu_idx(CPUARMState *env, int mmu_idx)
}
}
static inline ARMMMUIdx core_to_aa64_mmu_idx(int mmu_idx)
{
/* AArch64 is always a-profile. */
return mmu_idx | ARM_MMU_IDX_A;
}
int arm_mmu_idx_to_el(ARMMMUIdx mmu_idx);
/*

2
qemu/target/arm/translate-a64.c
View file

@ -14633,7 +14633,7 @@ static void aarch64_tr_init_disas_context(DisasContextBase *dcbase,
dc->condexec_mask = 0;
dc->condexec_cond = 0;
core_mmu_idx = FIELD_EX32(tb_flags, TBFLAG_ANY, MMUIDX);
dc->mmu_idx = core_to_arm_mmu_idx(env, core_mmu_idx);
dc->mmu_idx = core_to_aa64_mmu_idx(core_mmu_idx);
dc->tbii = FIELD_EX32(tb_flags, TBFLAG_A64, TBII);
dc->tbid = FIELD_EX32(tb_flags, TBFLAG_A64, TBID);
dc->current_el = arm_mmu_idx_to_el(dc->mmu_idx);