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[PATCH v3 06/20] target/arm: Replace CPSR_ERET_MASK with aarch32_cpsr_va
From: |
Richard Henderson |
Subject: |
[PATCH v3 06/20] target/arm: Replace CPSR_ERET_MASK with aarch32_cpsr_valid_mask |
Date: |
Mon, 3 Feb 2020 14:47:02 +0000 |
CPSR_ERET_MASK was a useless renaming of CPSR_RESERVED.
The function also takes into account bits that the cpu
does not support.
Signed-off-by: Richard Henderson <address@hidden>
---
target/arm/cpu.h | 2 --
target/arm/op_helper.c | 5 ++++-
2 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/target/arm/cpu.h b/target/arm/cpu.h
index 08b2f5d73e..694b074298 100644
--- a/target/arm/cpu.h
+++ b/target/arm/cpu.h
@@ -1209,8 +1209,6 @@ void pmu_init(ARMCPU *cpu);
#define CPSR_USER (CPSR_NZCV | CPSR_Q | CPSR_GE)
/* Execution state bits. MRS read as zero, MSR writes ignored. */
#define CPSR_EXEC (CPSR_T | CPSR_IT | CPSR_J | CPSR_IL)
-/* Mask of bits which may be set by exception return copying them from SPSR */
-#define CPSR_ERET_MASK (~CPSR_RESERVED)
/* Bit definitions for M profile XPSR. Most are the same as CPSR. */
#define XPSR_EXCP 0x1ffU
diff --git a/target/arm/op_helper.c b/target/arm/op_helper.c
index 27d16ad9ad..acf1815ea3 100644
--- a/target/arm/op_helper.c
+++ b/target/arm/op_helper.c
@@ -400,11 +400,14 @@ void HELPER(cpsr_write)(CPUARMState *env, uint32_t val,
uint32_t mask)
/* Write the CPSR for a 32-bit exception return */
void HELPER(cpsr_write_eret)(CPUARMState *env, uint32_t val)
{
+ uint32_t mask;
+
qemu_mutex_lock_iothread();
arm_call_pre_el_change_hook(env_archcpu(env));
qemu_mutex_unlock_iothread();
- cpsr_write(env, val, CPSR_ERET_MASK, CPSRWriteExceptionReturn);
+ mask = aarch32_cpsr_valid_mask(env->features, &env_archcpu(env)->isar);
+ cpsr_write(env, val, mask, CPSRWriteExceptionReturn);
/* Generated code has already stored the new PC value, but
* without masking out its low bits, because which bits need
--
2.20.1
- [PATCH v3 05/20] target/arm: Split out aarch32_cpsr_valid_mask, (continued)
- [PATCH v3 05/20] target/arm: Split out aarch32_cpsr_valid_mask, Richard Henderson, 2020/02/03
- [PATCH v3 07/20] target/arm: Use aarch32_cpsr_valid_mask in helper_exception_return, Richard Henderson, 2020/02/03
- [PATCH v3 08/20] target/arm: Remove CPSR_RESERVED, Richard Henderson, 2020/02/03
- [PATCH v3 09/20] target/arm: Tidy msr_mask, Richard Henderson, 2020/02/03
- [PATCH v3 06/20] target/arm: Replace CPSR_ERET_MASK with aarch32_cpsr_valid_mask,
Richard Henderson <=
- [PATCH v3 10/20] target/arm: Introduce aarch64_pstate_valid_mask, Richard Henderson, 2020/02/03
- [PATCH v3 11/20] target/arm: Update MSR access for PAN, Richard Henderson, 2020/02/03
- [PATCH v3 12/20] target/arm: Update arm_mmu_idx_el for PAN, Richard Henderson, 2020/02/03
- [PATCH v3 13/20] target/arm: Enforce PAN semantics in get_S1prot, Richard Henderson, 2020/02/03
- [PATCH v3 14/20] target/arm: Set PAN bit as required on exception entry, Richard Henderson, 2020/02/03