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target/arm: Drop access_el3_aa32ns_aa64any()

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Calling access_el3_aa32ns() works for AArch32 only cores
but it does not handle 32-bit EL2 on top of 64-bit EL3
for mixed 32/64-bit cores.

Merge access_el3_aa32ns_aa64any() into access_el3_aa32ns()
and only use the latter.

Fixes: 68e9c2fe65 ("target-arm: Add VTCR_EL2")

Backports commit 93dd1e6140e2652347cfe7208591d4cd32762d08 from qemu
This commit is contained in:
Edgar E. Iglesias 2020-05-11 16:39:17 -04:00 committed by Lioncash
parent 8626c1c69c
commit 91dbd53f77
1 changed files with 7 additions and 23 deletions
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30
qemu/target/arm/helper.c
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@ -245,35 +245,19 @@ void init_cpreg_list(ARMCPU *cpu)
}
/*
* Some registers are not accessible if EL3.NS=0 and EL3 is using AArch32 but
* they are accessible when EL3 is using AArch64 regardless of EL3.NS.
*
* access_el3_aa32ns: Used to check AArch32 register views.
* access_el3_aa32ns_aa64any: Used to check both AArch32/64 register views.
* Some registers are not accessible from AArch32 EL3 if SCR.NS == 0.
*/
static CPAccessResult access_el3_aa32ns(CPUARMState *env,
const ARMCPRegInfo *ri,
bool isread)
{
bool secure = arm_is_secure_below_el3(env);
assert(!arm_el_is_aa64(env, 3));
if (secure) {
if (!is_a64(env) && arm_current_el(env) == 3 &&
arm_is_secure_below_el3(env)) {
return CP_ACCESS_TRAP_UNCATEGORIZED;
}
return CP_ACCESS_OK;
}
static CPAccessResult access_el3_aa32ns_aa64any(CPUARMState *env,
const ARMCPRegInfo *ri,
bool isread)
{
if (!arm_el_is_aa64(env, 3)) {
return access_el3_aa32ns(env, ri, isread);
}
return CP_ACCESS_OK;
}
/* Some secure-only AArch32 registers trap to EL3 if used from
* Secure EL1 (but are just ordinary UNDEF in other non-EL3 contexts).
* Note that an access from Secure EL1 can only happen if EL3 is AArch64.
@ -4850,7 +4834,7 @@ static const ARMCPRegInfo el3_no_el2_cp_reginfo[] = {
.access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
{ .name = "VTCR_EL2", .state = ARM_CP_STATE_BOTH,
.opc0 = 3, .opc1 = 4, .crn = 2, .crm = 1, .opc2 = 2,
.access = PL2_RW, .accessfn = access_el3_aa32ns_aa64any,
.access = PL2_RW, .accessfn = access_el3_aa32ns,
.type = ARM_CP_CONST, .resetvalue = 0 },
{ .name = "VTTBR", .state = ARM_CP_STATE_AA32,
.cp = 15, .opc1 = 6, .crm = 2,
@ -4898,7 +4882,7 @@ static const ARMCPRegInfo el3_no_el2_cp_reginfo[] = {
.type = ARM_CP_CONST, .resetvalue = 0 },
{ .name = "HPFAR_EL2", .state = ARM_CP_STATE_BOTH,
.opc0 = 3, .opc1 = 4, .crn = 6, .crm = 0, .opc2 = 4,
.access = PL2_RW, .accessfn = access_el3_aa32ns_aa64any,
.access = PL2_RW, .accessfn = access_el3_aa32ns,
.type = ARM_CP_CONST, .resetvalue = 0 },
{ .name = "HSTR_EL2", .state = ARM_CP_STATE_BOTH,
.opc0 = 3, .opc1 = 4, .crn = 1, .crm = 1, .opc2 = 3,
@ -7232,12 +7216,12 @@ void register_cp_regs_for_features(ARMCPU *cpu)
ARMCPRegInfo vpidr_regs[] = {
{ .name = "VPIDR_EL2", .state = ARM_CP_STATE_BOTH,
.opc0 = 3, .opc1 = 4, .crn = 0, .crm = 0, .opc2 = 0,
.access = PL2_RW, .accessfn = access_el3_aa32ns_aa64any,
.access = PL2_RW, .accessfn = access_el3_aa32ns,
.type = ARM_CP_CONST, .resetvalue = cpu->midr,
.fieldoffset = offsetof(CPUARMState, cp15.vpidr_el2) },
{ .name = "VMPIDR_EL2", .state = ARM_CP_STATE_BOTH,
.opc0 = 3, .opc1 = 4, .crn = 0, .crm = 0, .opc2 = 5,
.access = PL2_RW, .accessfn = access_el3_aa32ns_aa64any,
.access = PL2_RW, .accessfn = access_el3_aa32ns,
.type = ARM_CP_NO_RAW,
.writefn = arm_cp_write_ignore, .readfn = mpidr_read },
REGINFO_SENTINEL