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| author | Richard Henderson <richard.henderson@linaro.org> | 2020-02-08 12:58:04 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2020-02-13 14:14:54 +0000 |
| commit | d203cabd1bd12f31c9df0b5737421ba67b96857b (patch) | |
| tree | 74f23a4f2edb0370b905283778a680949966b6d6 /target | |
| parent | 437864216d63f052f3cd06ec8861d0e432496424 (diff) | |
| download | qemu-d203cabd1bd12f31c9df0b5737421ba67b96857b.zip qemu-d203cabd1bd12f31c9df0b5737421ba67b96857b.tar.gz qemu-d203cabd1bd12f31c9df0b5737421ba67b96857b.tar.bz2 | |
target/arm: Use aarch32_cpsr_valid_mask in helper_exception_return
Using ~0 as the mask on the aarch64->aarch32 exception return
was not even as correct as the CPSR_ERET_MASK that we had used
on the aarch32->aarch32 exception return.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200208125816.14954-9-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'target')
| -rw-r--r-- | target/arm/helper-a64.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/target/arm/helper-a64.c b/target/arm/helper-a64.c index bf45f8a..0c9feba 100644 --- a/target/arm/helper-a64.c +++ b/target/arm/helper-a64.c @@ -959,7 +959,7 @@ void HELPER(exception_return)(CPUARMState *env, uint64_t new_pc) { int cur_el = arm_current_el(env); unsigned int spsr_idx = aarch64_banked_spsr_index(cur_el); - uint32_t spsr = env->banked_spsr[spsr_idx]; + uint32_t mask, spsr = env->banked_spsr[spsr_idx]; int new_el; bool return_to_aa64 = (spsr & PSTATE_nRW) == 0; @@ -1014,7 +1014,8 @@ void HELPER(exception_return)(CPUARMState *env, uint64_t new_pc) * will sort the register banks out for us, and we've already * caught all the bad-mode cases in el_from_spsr(). */ - cpsr_write(env, spsr, ~0, CPSRWriteRaw); + mask = aarch32_cpsr_valid_mask(env->features, &env_archcpu(env)->isar); + cpsr_write(env, spsr, mask, CPSRWriteRaw); if (!arm_singlestep_active(env)) { env->uncached_cpsr &= ~PSTATE_SS; } |