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target-arm: cpu: Move cpu_is_big_endian to header

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There is a CPU data endianness test that is used to drive the
virtio_big_endian test.

Move this up to the header so it can be more generally used for endian
tests. The KVM specific cpu_syncronize_state call is left behind in the
virtio specific function.

Rename it arm_cpu-data_is_big_endian() to more accurately capture that
this is for data accesses only.

Backports commit ed50ff7875d61a75517c92deb0444d73fbbca878 from qemu
This commit is contained in:
Peter Crosthwaite 2018-02-21 02:10:31 -05:00 committed by Lioncash
parent ec15ee10d0
commit 1457b73a13
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1 changed files with 19 additions and 0 deletions
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19
qemu/target-arm/cpu.h
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@ -2167,6 +2167,25 @@ static inline uint64_t *aa64_vfp_qreg(CPUARMState *env, unsigned regno)
return &env->vfp.regs[2 * regno];
}
/* Return true if the processor is in big-endian mode. */
static inline bool arm_cpu_data_is_big_endian(CPUARMState *env)
{
int cur_el;
/* In 32bit endianness is determined by looking at CPSR's E bit */
if (!is_a64(env)) {
return (env->uncached_cpsr & CPSR_E) ? 1 : 0;
}
cur_el = arm_current_el(env);
if (cur_el == 0) {
return (env->cp15.sctlr_el[1] & SCTLR_E0E) != 0;
}
return (env->cp15.sctlr_el[cur_el] & SCTLR_EE) != 0;
}
#include "exec/exec-all.h"
enum {