Create a function to compute the values of the TBFLAG_A64 bits
that will be cached. For now, the env->hflags variable is not
used, and the results are fed back to cpu_get_tb_cpu_state.
Signed-off-by: Richard Henderson <richard.hender...@linaro.org>
---
target/arm/helper.c | 131 +++++++++++++++++++++++---------------------
1 file changed, 69 insertions(+), 62 deletions(-)
diff --git a/target/arm/helper.c b/target/arm/helper.c
index f2c6419369..02cb43cf58 100644
--- a/target/arm/helper.c
+++ b/target/arm/helper.c
@@ -11032,6 +11032,71 @@ static uint32_t rebuild_hflags_common(CPUARMState
*env, int fp_el,
return flags;
}
+static uint32_t rebuild_hflags_a64(CPUARMState *env, int el, int fp_el,
+ ARMMMUIdx mmu_idx)
+{
+ ARMMMUIdx stage1 = stage_1_mmu_idx(mmu_idx);
+ ARMVAParameters p0 = aa64_va_parameters_both(env, 0, stage1);
+ uint32_t flags = 0;
+ uint64_t sctlr;
+ int tbii, tbid;
+
+ flags = FIELD_DP32(flags, TBFLAG_ANY, AARCH64_STATE, 1);
+
+ /* FIXME: ARMv8.1-VHE S2 translation regime. */
+ if (regime_el(env, stage1) < 2) {
+ ARMVAParameters p1 = aa64_va_parameters_both(env, -1, stage1);
+ tbid = (p1.tbi << 1) | p0.tbi;
+ tbii = tbid & ~((p1.tbid << 1) | p0.tbid);
+ } else {
+ tbid = p0.tbi;
+ tbii = tbid & !p0.tbid;
+ }
+
+ flags = FIELD_DP32(flags, TBFLAG_A64, TBII, tbii);
+ flags = FIELD_DP32(flags, TBFLAG_A64, TBID, tbid);
+
+ if (cpu_isar_feature(aa64_sve, env_archcpu(env))) {
+ int sve_el = sve_exception_el(env, el);
+ uint32_t zcr_len;
+
+ /*
+ * If SVE is disabled, but FP is enabled,
+ * then the effective len is 0.
+ */
+ if (sve_el != 0 && fp_el == 0) {
+ zcr_len = 0;
+ } else {
+ zcr_len = sve_zcr_len_for_el(env, el);
+ }
+ flags = FIELD_DP32(flags, TBFLAG_A64, SVEEXC_EL, sve_el);
+ flags = FIELD_DP32(flags, TBFLAG_A64, ZCR_LEN, zcr_len);
+ }
+
+ sctlr = arm_sctlr(env, el);
+
+ if (cpu_isar_feature(aa64_pauth, env_archcpu(env))) {
+ /*
+ * In order to save space in flags, we record only whether
+ * pauth is "inactive", meaning all insns are implemented as
+ * a nop, or "active" when some action must be performed.
+ * The decision of which action to take is left to a helper.
+ */
+ if (sctlr & (SCTLR_EnIA | SCTLR_EnIB | SCTLR_EnDA | SCTLR_EnDB)) {
+ flags = FIELD_DP32(flags, TBFLAG_A64, PAUTH_ACTIVE, 1);
+ }
+ }
+
+ if (cpu_isar_feature(aa64_bti, env_archcpu(env))) {
+ /* Note that SCTLR_EL[23].BT == SCTLR_BT1. */
+ if (sctlr & (el == 0 ? SCTLR_BT0 : SCTLR_BT1)) {
+ flags = FIELD_DP32(flags, TBFLAG_A64, BT, 1);
+ }
+ }
+
+ return rebuild_hflags_common(env, fp_el, mmu_idx, flags);
+}
+
void cpu_get_tb_cpu_state(CPUARMState *env, target_ulong *pc,
target_ulong *cs_base, uint32_t *pflags)
{
@@ -11041,67 +11106,9 @@ void cpu_get_tb_cpu_state(CPUARMState *env,
target_ulong *pc,
uint32_t flags = 0;
if (is_a64(env)) {
- ARMCPU *cpu = env_archcpu(env);
- uint64_t sctlr;
-
*pc = env->pc;
- flags = FIELD_DP32(flags, TBFLAG_ANY, AARCH64_STATE, 1);
-
- /* Get control bits for tagged addresses. */
- {
- ARMMMUIdx stage1 = stage_1_mmu_idx(mmu_idx);
- ARMVAParameters p0 = aa64_va_parameters_both(env, 0, stage1);
- int tbii, tbid;
-
- /* FIXME: ARMv8.1-VHE S2 translation regime. */
- if (regime_el(env, stage1) < 2) {
- ARMVAParameters p1 = aa64_va_parameters_both(env, -1, stage1);
- tbid = (p1.tbi << 1) | p0.tbi;
- tbii = tbid & ~((p1.tbid << 1) | p0.tbid);
- } else {
- tbid = p0.tbi;
- tbii = tbid & !p0.tbid;
- }
-
- flags = FIELD_DP32(flags, TBFLAG_A64, TBII, tbii);
- flags = FIELD_DP32(flags, TBFLAG_A64, TBID, tbid);
- }
-
- if (cpu_isar_feature(aa64_sve, cpu)) {
- int sve_el = sve_exception_el(env, current_el);
- uint32_t zcr_len;
-
- /* If SVE is disabled, but FP is enabled,
- * then the effective len is 0.
- */
- if (sve_el != 0 && fp_el == 0) {
- zcr_len = 0;
- } else {
- zcr_len = sve_zcr_len_for_el(env, current_el);
- }
- flags = FIELD_DP32(flags, TBFLAG_A64, SVEEXC_EL, sve_el);
- flags = FIELD_DP32(flags, TBFLAG_A64, ZCR_LEN, zcr_len);
- }
-
- sctlr = arm_sctlr(env, current_el);
-
- if (cpu_isar_feature(aa64_pauth, cpu)) {
- /*
- * In order to save space in flags, we record only whether
- * pauth is "inactive", meaning all insns are implemented as
- * a nop, or "active" when some action must be performed.
- * The decision of which action to take is left to a helper.
- */
- if (sctlr & (SCTLR_EnIA | SCTLR_EnIB | SCTLR_EnDA | SCTLR_EnDB)) {
- flags = FIELD_DP32(flags, TBFLAG_A64, PAUTH_ACTIVE, 1);
- }
- }
-
- if (cpu_isar_feature(aa64_bti, cpu)) {
- /* Note that SCTLR_EL[23].BT == SCTLR_BT1. */
- if (sctlr & (current_el == 0 ? SCTLR_BT0 : SCTLR_BT1)) {
- flags = FIELD_DP32(flags, TBFLAG_A64, BT, 1);
- }
+ flags = rebuild_hflags_a64(env, current_el, fp_el, mmu_idx);
+ if (cpu_isar_feature(aa64_bti, env_archcpu(env))) {
flags = FIELD_DP32(flags, TBFLAG_A64, BTYPE, env->btype);
}
} else {
@@ -11121,9 +11128,9 @@ void cpu_get_tb_cpu_state(CPUARMState *env,
target_ulong *pc,
flags = FIELD_DP32(flags, TBFLAG_A32,
XSCALE_CPAR, env->cp15.c15_cpar);
}
- }
- flags = rebuild_hflags_common(env, fp_el, mmu_idx, flags);
+ flags = rebuild_hflags_common(env, fp_el, mmu_idx, flags);
+ }
/* The SS_ACTIVE and PSTATE_SS bits correspond to the state machine
* states defined in the ARM ARM for software singlestep:
--
2.17.1
