diff options
| author | Peter Maydell <peter.maydell@linaro.org> | 2014-02-26 17:20:06 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2014-02-26 17:20:06 +0000 |
| commit | 4cc35614a056839df8b0675cd16f55e758cd570d (patch) | |
| tree | 0a8500d333df4d8e1641abaf4944e9cf10a76425 /target-arm/cpu.c | |
| parent | 1ed69e82b8f1dc69eb4c3e556a6417885a5dd49c (diff) | |
target-arm: Store AIF bits in env->pstate for AArch32
To avoid complication in code that otherwise would not need to
care about whether EL1 is AArch32 or AArch64, we should store
the interrupt mask bits (CPSR.AIF in AArch32 and PSTATE.DAIF
in AArch64) in one place consistently regardless of EL1's mode.
Since AArch64 has an extra enable bit (D for debug exceptions)
which isn't visible in AArch32, this means we need to keep
the enables in env->pstate. (This is also consistent with the
general approach we're taking that we handle 32 bit CPUs as
being like AArch64/ARMv8 CPUs but which only run in 32 bit mode.)
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Diffstat (limited to 'target-arm/cpu.c')
| -rw-r--r-- | target-arm/cpu.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/target-arm/cpu.c b/target-arm/cpu.c index 2f949437fd..7384e17561 100644 --- a/target-arm/cpu.c +++ b/target-arm/cpu.c @@ -94,8 +94,7 @@ static void arm_cpu_reset(CPUState *s) /* Userspace expects access to CTL_EL0 and the cache ops */ env->cp15.c1_sys |= SCTLR_UCT | SCTLR_UCI; #else - env->pstate = PSTATE_D | PSTATE_A | PSTATE_I | PSTATE_F - | PSTATE_MODE_EL1h; + env->pstate = PSTATE_MODE_EL1h; #endif } @@ -110,13 +109,14 @@ static void arm_cpu_reset(CPUState *s) } #else /* SVC mode with interrupts disabled. */ - env->uncached_cpsr = ARM_CPU_MODE_SVC | CPSR_A | CPSR_F | CPSR_I; + env->uncached_cpsr = ARM_CPU_MODE_SVC; + env->daif = PSTATE_D | PSTATE_A | PSTATE_I | PSTATE_F; /* On ARMv7-M the CPSR_I is the value of the PRIMASK register, and is clear at reset. Initial SP and PC are loaded from ROM. */ if (IS_M(env)) { uint32_t pc; uint8_t *rom; - env->uncached_cpsr &= ~CPSR_I; + env->daif &= ~PSTATE_I; rom = rom_ptr(0); if (rom) { /* We should really use ldl_phys here, in case the guest |