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authorEdgar E. Iglesias2020-05-05 16:17:29 +0200
committerPeter Maydell2020-05-11 11:57:42 +0200
commit93dd1e6140e2652347cfe7208591d4cd32762d08 (patch)
tree9b8b2cb49be2a87cc6bc00c5a22c8f09498930a2 /target/arm/helper.c
parentaspeed: Add boot stub for smp booting (diff)
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target/arm: Drop access_el3_aa32ns_aa64any()
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") Reported-by: Laurent Desnogues <laurent.desnogues@gmail.com> Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> Message-id: 20200505141729.31930-2-edgar.iglesias@gmail.com Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'target/arm/helper.c')
-rw-r--r--target/arm/helper.c30
1 files changed, 7 insertions, 23 deletions
diff --git a/target/arm/helper.c b/target/arm/helper.c
index a94f650795..b88d27819d 100644
--- a/target/arm/helper.c
+++ b/target/arm/helper.c
@@ -503,35 +503,19 @@ 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.
@@ -5147,7 +5131,7 @@ 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,
@@ -5195,7 +5179,7 @@ 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,
@@ -7537,12 +7521,12 @@ 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