Create a function define_ttbr_register which handles the 3
distinct cases for TTBR[01] registers.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
target/arm/helper.c | 165 +++++++++++++++++++++++++++++++-------------
1 file changed, 116 insertions(+), 49 deletions(-)
diff --git a/target/arm/helper.c b/target/arm/helper.c
index f9a2a7d62d..550ba77c5c 100644
--- a/target/arm/helper.c
+++ b/target/arm/helper.c
@@ -3011,26 +3011,6 @@ static const ARMCPRegInfo vmsa_cp_reginfo[] = {
.vhe_redir_to_el2 = ENCODE_AA64_CP_REG(3, 4, 5, 2, 0),
.vhe_redir_to_el01 = ENCODE_AA64_CP_REG(3, 5, 5, 2, 0),
.fieldoffset = offsetof(CPUARMState, cp15.esr_el[1]), .resetvalue = 0, },
- { .name = "TTBR0_EL1", .state = ARM_CP_STATE_BOTH,
- .opc0 = 3, .opc1 = 0, .crn = 2, .crm = 0, .opc2 = 0,
- .access = PL1_RW, .accessfn = access_tvm_trvm,
- .fgt = FGT_TTBR0_EL1,
- .nv2_redirect_offset = 0x200 | NV2_REDIR_NV1,
- .vhe_redir_to_el2 = ENCODE_AA64_CP_REG(3, 4, 2, 0, 0),
- .vhe_redir_to_el01 = ENCODE_AA64_CP_REG(3, 5, 2, 0, 0),
- .writefn = vmsa_ttbr_write, .resetvalue = 0, .raw_writefn = raw_write,
- .bank_fieldoffsets = { offsetof(CPUARMState, cp15.ttbr0_s),
- offsetof(CPUARMState, cp15.ttbr0_ns) } },
- { .name = "TTBR1_EL1", .state = ARM_CP_STATE_BOTH,
- .opc0 = 3, .opc1 = 0, .crn = 2, .crm = 0, .opc2 = 1,
- .access = PL1_RW, .accessfn = access_tvm_trvm,
- .fgt = FGT_TTBR1_EL1,
- .nv2_redirect_offset = 0x210 | NV2_REDIR_NV1,
- .vhe_redir_to_el2 = ENCODE_AA64_CP_REG(3, 4, 2, 0, 1),
- .vhe_redir_to_el01 = ENCODE_AA64_CP_REG(3, 5, 2, 0, 1),
- .writefn = vmsa_ttbr_write, .resetvalue = 0, .raw_writefn = raw_write,
- .bank_fieldoffsets = { offsetof(CPUARMState, cp15.ttbr1_s),
- offsetof(CPUARMState, cp15.ttbr1_ns) } },
{ .name = "TCR_EL1", .state = ARM_CP_STATE_AA64,
.opc0 = 3, .crn = 2, .crm = 0, .opc1 = 0, .opc2 = 2,
.access = PL1_RW, .accessfn = access_tvm_trvm,
@@ -3256,23 +3236,6 @@ static const ARMCPRegInfo lpae_cp_reginfo[] = {
{ .name = "AMAIR1", .cp = 15, .crn = 10, .crm = 3, .opc1 = 0, .opc2 = 1,
.access = PL1_RW, .accessfn = access_tvm_trvm,
.type = ARM_CP_CONST, .resetvalue = 0 },
-
- /*
- * The primary definitions of TTBR[01]_EL1 are in vmsa_cp_reginfo[].
- * Here we need only provide the 64-bit views for AArch32.
- */
- { .name = "TTBR0", .cp = 15, .crm = 2, .opc1 = 0,
- .access = PL1_RW, .accessfn = access_tvm_trvm,
- .type = ARM_CP_64BIT | ARM_CP_ALIAS,
- .bank_fieldoffsets = { offsetof(CPUARMState, cp15.ttbr0_s),
- offsetof(CPUARMState, cp15.ttbr0_ns) },
- .writefn = vmsa_ttbr_write, .raw_writefn = raw_write },
- { .name = "TTBR1", .cp = 15, .crm = 2, .opc1 = 1,
- .access = PL1_RW, .accessfn = access_tvm_trvm,
- .type = ARM_CP_64BIT | ARM_CP_ALIAS,
- .bank_fieldoffsets = { offsetof(CPUARMState, cp15.ttbr1_s),
- offsetof(CPUARMState, cp15.ttbr1_ns) },
- .writefn = vmsa_ttbr_write, .raw_writefn = raw_write },
};
static void define_par_register(ARMCPU *cpu)
@@ -3342,6 +3305,121 @@ static void define_par_register(ARMCPU *cpu)
define_arm_cp_regs(cpu, par64_reginfo);
}
+static void define_ttbr_registers(ARMCPU *cpu)
+{
+ /*
+ * For v8:
+ * The aarch64 regs are primary, since they might be 128-bit.
+ * The aarch32 64-bit non-secure regs are secondary to aa64 el1.
+ * The aarch32 64-bit httbr is secondary to aa64 el2.
+ * The aarch32 64-bit secure ttbr0 is secondary to aa64 el3.
+ * The aarch32 64-bit secure ttbr1 is primary.
+ *
+ * For v7:
+ * The aarch32 64-bit s+ns regs are primary.
+ *
+ * The aarch32 32-bit regs are secondary to one of the above,
+ * and we also don't expose them to gdb.
+ */
+ static const ARMCPRegInfo ttbrv8_reginfo[] = {
+ { .name = "TTBR0_EL1", .state = ARM_CP_STATE_AA64,
+ .opc0 = 3, .opc1 = 0, .crn = 2, .crm = 0, .opc2 = 0,
+ .access = PL1_RW, .accessfn = access_tvm_trvm,
+ .fgt = FGT_TTBR0_EL1,
+ .nv2_redirect_offset = 0x200 | NV2_REDIR_NV1,
+ .vhe_redir_to_el2 = ENCODE_AA64_CP_REG(3, 4, 2, 0, 0),
+ .vhe_redir_to_el01 = ENCODE_AA64_CP_REG(3, 5, 2, 0, 0),
+ .writefn = vmsa_ttbr_write, .raw_writefn = raw_write,
+ .fieldoffset = offsetof(CPUARMState, cp15.ttbr0_el[1]) },
+ { .name = "TTBR1_EL1", .state = ARM_CP_STATE_AA64,
+ .opc0 = 3, .opc1 = 0, .crn = 2, .crm = 0, .opc2 = 1,
+ .access = PL1_RW, .accessfn = access_tvm_trvm,
+ .fgt = FGT_TTBR1_EL1,
+ .nv2_redirect_offset = 0x210 | NV2_REDIR_NV1,
+ .vhe_redir_to_el2 = ENCODE_AA64_CP_REG(3, 4, 2, 0, 1),
+ .vhe_redir_to_el01 = ENCODE_AA64_CP_REG(3, 5, 2, 0, 1),
+ .writefn = vmsa_ttbr_write, .raw_writefn = raw_write,
+ .fieldoffset = offsetof(CPUARMState, cp15.ttbr1_el[1]) },
+ { .name = "TTBR0_EL2", .state = ARM_CP_STATE_AA64,
+ .opc0 = 3, .opc1 = 4, .crn = 2, .crm = 0, .opc2 = 0,
+ .access = PL2_RW, .resetvalue = 0,
+ .writefn = vmsa_tcr_ttbr_el2_write, .raw_writefn = raw_write,
+ .fieldoffset = offsetof(CPUARMState, cp15.ttbr0_el[2]) },
+ { .name = "TTBR0_EL3", .state = ARM_CP_STATE_AA64,
+ .opc0 = 3, .opc1 = 6, .crn = 2, .crm = 0, .opc2 = 0,
+ .access = PL3_RW, .resetvalue = 0,
+ .fieldoffset = offsetof(CPUARMState, cp15.ttbr0_el[3]) },
+ };
+
+ static ARMCPRegInfo ttbr64_reginfo[] = {
+ [0 ... 3] = {
+ .cp = 15, .crm = 2, .type = ARM_CP_64BIT,
+ .access = PL1_RW, .accessfn = access_tvm_trvm,
+ .writefn = vmsa_ttbr_write, .raw_writefn = raw_write
+ },
+ [0 ... 1].opc1 = 0,
+ [0].name = "TTBR0",
+ [0].secure = ARM_CP_SECSTATE_NS,
+ [0].fieldoffset = offsetof(CPUARMState, cp15.ttbr0_ns),
+ [1].name = "TTBR0_S",
+ [1].secure = ARM_CP_SECSTATE_S,
+ [1].fieldoffset = offsetof(CPUARMState, cp15.ttbr0_s),
+
+ [2 ... 3].opc1 = 1,
+ [2].name = "TTBR1",
+ [2].secure = ARM_CP_SECSTATE_NS,
+ [2].fieldoffset = offsetof(CPUARMState, cp15.ttbr1_ns),
+ [3].name = "TTBR1_S",
+ [3].secure = ARM_CP_SECSTATE_S,
+ [3].fieldoffset = offsetof(CPUARMState, cp15.ttbr1_s),
+
+ [4] = {
+ .name = "HTTBR", .cp = 15, .crm = 2, .opc1 = 4,
+ .access = PL2_RW, .type = ARM_CP_64BIT,
+ .fieldoffset = offsetof(CPUARMState, cp15.ttbr0_el[2])
+ },
+ };
+
+ static ARMCPRegInfo ttbr32_reginfo[] = {
+ { .name = "TTBR0", .cp = 15, .opc1 = 0, .crn = 2, .crm = 0, .opc2 = 0,
+ .access = PL1_RW, .accessfn = access_tvm_trvm,
+ .writefn = vmsa_ttbr_write, .raw_writefn = raw_write,
+ .bank_fieldoffsets = { offsetof(CPUARMState, cp15.ttbr0_s),
+ offsetof(CPUARMState, cp15.ttbr0_ns) } },
+ { .name = "TTBR1", .cp = 15, .opc1 = 0, .crn = 2, .crm = 0, .opc2 = 1,
+ .access = PL1_RW, .accessfn = access_tvm_trvm,
+ .writefn = vmsa_ttbr_write, .raw_writefn = raw_write,
+ .bank_fieldoffsets = { offsetof(CPUARMState, cp15.ttbr1_s),
+ offsetof(CPUARMState, cp15.ttbr1_ns) } },
+ };
+
+ CPUARMState *env = &cpu->env;
+
+ /* With only VMSA, define a 32-bit reg that filters bits from write. */
+ if (!arm_feature(env, ARM_FEATURE_LPAE)) {
+ define_arm_cp_regs(cpu, ttbr32_reginfo);
+ return;
+ }
+
+ /* With LPAE, the 32-bit regs are aliases of 64-bit regs. */
+ for (int i = 0; i < ARRAY_SIZE(ttbr32_reginfo); ++i) {
+ ttbr32_reginfo[i].type = ARM_CP_ALIAS | ARM_CP_NO_GDB;
+ }
+ define_arm_cp_regs(cpu, ttbr32_reginfo);
+
+ if (arm_feature(env, ARM_FEATURE_V8)) {
+ define_arm_cp_regs(cpu, ttbrv8_reginfo);
+
+ ttbr64_reginfo[0].type |= ARM_CP_ALIAS;
+ ttbr64_reginfo[1].type |= ARM_CP_ALIAS;
+ ttbr64_reginfo[2].type |= ARM_CP_ALIAS;
+ /* Index 3, TTBR1_S, is not an alias. */
+ ttbr64_reginfo[4].type |= ARM_CP_ALIAS;
+ }
+
+ define_arm_cp_regs(cpu, ttbr64_reginfo);
+}
+
static uint64_t aa64_fpcr_read(CPUARMState *env, const ARMCPRegInfo *ri)
{
return vfp_get_fpcr(env);
@@ -4468,14 +4546,6 @@ static const ARMCPRegInfo el2_cp_reginfo[] = {
.access = PL2_RW, .resetvalue = 0,
.nv2_redirect_offset = 0x90,
.fieldoffset = offsetof(CPUARMState, cp15.tpidr_el[2]) },
- { .name = "TTBR0_EL2", .state = ARM_CP_STATE_AA64,
- .opc0 = 3, .opc1 = 4, .crn = 2, .crm = 0, .opc2 = 0,
- .access = PL2_RW, .resetvalue = 0,
- .writefn = vmsa_tcr_ttbr_el2_write, .raw_writefn = raw_write,
- .fieldoffset = offsetof(CPUARMState, cp15.ttbr0_el[2]) },
- { .name = "HTTBR", .cp = 15, .opc1 = 4, .crm = 2,
- .access = PL2_RW, .type = ARM_CP_64BIT | ARM_CP_ALIAS,
- .fieldoffset = offsetof(CPUARMState, cp15.ttbr0_el[2]) },
#ifndef CONFIG_USER_ONLY
{ .name = "CNTHCTL_EL2", .state = ARM_CP_STATE_BOTH,
.opc0 = 3, .opc1 = 4, .crn = 14, .crm = 1, .opc2 = 0,
@@ -4660,10 +4730,6 @@ static const ARMCPRegInfo el3_cp_reginfo[] = {
.access = PL1_RW, .accessfn = access_trap_aa32s_el1,
.writefn = vbar_write, .resetvalue = 0,
.fieldoffset = offsetof(CPUARMState, cp15.mvbar) },
- { .name = "TTBR0_EL3", .state = ARM_CP_STATE_AA64,
- .opc0 = 3, .opc1 = 6, .crn = 2, .crm = 0, .opc2 = 0,
- .access = PL3_RW, .resetvalue = 0,
- .fieldoffset = offsetof(CPUARMState, cp15.ttbr0_el[3]) },
{ .name = "TCR_EL3", .state = ARM_CP_STATE_AA64,
.opc0 = 3, .opc1 = 6, .crn = 2, .crm = 0, .opc2 = 2,
.access = PL3_RW,
@@ -7174,6 +7240,7 @@ void register_cp_regs_for_features(ARMCPU *cpu)
} else {
define_arm_cp_regs(cpu, vmsa_pmsa_cp_reginfo);
define_arm_cp_regs(cpu, vmsa_cp_reginfo);
+ define_ttbr_registers(cpu);
/* TTCBR2 is introduced with ARMv8.2-AA32HPD. */
if (cpu_isar_feature(aa32_hpd, cpu)) {
define_one_arm_cp_reg(cpu, &ttbcr2_reginfo);
--
2.43.0