[PATCH 02/10] target/arm: Move TLBI insns for AArch32 EL2 to tlbi_insn_helper.c

[Peter Maydell]

Move the AArch32 TLBI insns for AArch32 EL2 to tlbi_insn_helper.c.
To keep this as an obviously pure code-movement, we retain the
same condition for registering tlbi_el2_cp_reginfo that we use for
el2_cp_reginfo. We'll be able to simplify this condition later,
since the need to define the reginfo for EL3-without-EL2 doesn't
apply for the TLBI ops specifically.

This move brings all the uses of tlbimva_hyp_write() and
tlbimva_hyp_is_write() back into a single file, so we can move those
also, and make them file-local again.

The helper alle1_tlbmask() is an exception to the pattern that we
only need to make these functions global temporarily, because once
this refactoring is complete it will be called by both code in
helper.c (vttbr_write()) and by code in tlb-insns.c.  We therefore
put its prototype in a permanent home in internals.h.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 target/arm/cpregs.h        |  4 --
 target/arm/internals.h     |  6 +++
 target/arm/helper.c        | 74 +--------------------------------
 target/arm/tcg/tlb-insns.c | 85 ++++++++++++++++++++++++++++++++++++++
 4 files changed, 92 insertions(+), 77 deletions(-)

diff --git a/target/arm/cpregs.h b/target/arm/cpregs.h
index 26c27dc5cb6..851cd045b2c 100644
--- a/target/arm/cpregs.h
+++ b/target/arm/cpregs.h
@@ -1143,9 +1143,5 @@ CPAccessResult access_ttlb(CPUARMState *env, const 
ARMCPRegInfo *ri,
 CPAccessResult access_ttlbis(CPUARMState *env, const ARMCPRegInfo *ri,
                              bool isread);
 bool tlb_force_broadcast(CPUARMState *env);
-void tlbimva_hyp_write(CPUARMState *env, const ARMCPRegInfo *ri,
-                       uint64_t value);
-void tlbimva_hyp_is_write(CPUARMState *env, const ARMCPRegInfo *ri,
-                          uint64_t value);
 
 #endif /* TARGET_ARM_CPREGS_H */
diff --git a/target/arm/internals.h b/target/arm/internals.h
index 2adedb94777..c3a5b1385f1 100644
--- a/target/arm/internals.h
+++ b/target/arm/internals.h
@@ -1820,4 +1820,10 @@ uint64_t gt_get_countervalue(CPUARMState *env);
  * and CNTVCT_EL0 (this will be either 0 or the value of CNTVOFF_EL2).
  */
 uint64_t gt_virt_cnt_offset(CPUARMState *env);
+
+/*
+ * Return mask of ARMMMUIdxBit values corresponding to an "invalidate
+ * all EL1" scope; this covers stage 1 and stage 2.
+ */
+int alle1_tlbmask(CPUARMState *env);
 #endif
diff --git a/target/arm/helper.c b/target/arm/helper.c
index 6a9bf70f185..3c69225e1d9 100644
--- a/target/arm/helper.c
+++ b/target/arm/helper.c
@@ -438,7 +438,7 @@ static void contextidr_write(CPUARMState *env, const 
ARMCPRegInfo *ri,
     raw_write(env, ri, value);
 }
 
-static int alle1_tlbmask(CPUARMState *env)
+int alle1_tlbmask(CPUARMState *env)
 {
     /*
      * Note that the 'ALL' scope must invalidate both stage 1 and
@@ -465,58 +465,6 @@ bool tlb_force_broadcast(CPUARMState *env)
     return arm_current_el(env) == 1 && (arm_hcr_el2_eff(env) & HCR_FB);
 }
 
-static void tlbiall_nsnh_write(CPUARMState *env, const ARMCPRegInfo *ri,
-                               uint64_t value)
-{
-    CPUState *cs = env_cpu(env);
-
-    tlb_flush_by_mmuidx(cs, alle1_tlbmask(env));
-}
-
-static void tlbiall_nsnh_is_write(CPUARMState *env, const ARMCPRegInfo *ri,
-                                  uint64_t value)
-{
-    CPUState *cs = env_cpu(env);
-
-    tlb_flush_by_mmuidx_all_cpus_synced(cs, alle1_tlbmask(env));
-}
-
-
-static void tlbiall_hyp_write(CPUARMState *env, const ARMCPRegInfo *ri,
-                              uint64_t value)
-{
-    CPUState *cs = env_cpu(env);
-
-    tlb_flush_by_mmuidx(cs, ARMMMUIdxBit_E2);
-}
-
-static void tlbiall_hyp_is_write(CPUARMState *env, const ARMCPRegInfo *ri,
-                                 uint64_t value)
-{
-    CPUState *cs = env_cpu(env);
-
-    tlb_flush_by_mmuidx_all_cpus_synced(cs, ARMMMUIdxBit_E2);
-}
-
-void tlbimva_hyp_write(CPUARMState *env, const ARMCPRegInfo *ri,
-                       uint64_t value)
-{
-    CPUState *cs = env_cpu(env);
-    uint64_t pageaddr = value & ~MAKE_64BIT_MASK(0, 12);
-
-    tlb_flush_page_by_mmuidx(cs, pageaddr, ARMMMUIdxBit_E2);
-}
-
-void tlbimva_hyp_is_write(CPUARMState *env, const ARMCPRegInfo *ri,
-                          uint64_t value)
-{
-    CPUState *cs = env_cpu(env);
-    uint64_t pageaddr = value & ~MAKE_64BIT_MASK(0, 12);
-
-    tlb_flush_page_by_mmuidx_all_cpus_synced(cs, pageaddr,
-                                             ARMMMUIdxBit_E2);
-}
-
 static const ARMCPRegInfo cp_reginfo[] = {
     /*
      * Define the secure and non-secure FCSE identifier CP registers
@@ -6248,26 +6196,6 @@ static const ARMCPRegInfo el2_cp_reginfo[] = {
     { .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]) },
-    { .name = "TLBIALLNSNH",
-      .cp = 15, .opc1 = 4, .crn = 8, .crm = 7, .opc2 = 4,
-      .type = ARM_CP_NO_RAW, .access = PL2_W,
-      .writefn = tlbiall_nsnh_write },
-    { .name = "TLBIALLNSNHIS",
-      .cp = 15, .opc1 = 4, .crn = 8, .crm = 3, .opc2 = 4,
-      .type = ARM_CP_NO_RAW, .access = PL2_W,
-      .writefn = tlbiall_nsnh_is_write },
-    { .name = "TLBIALLH", .cp = 15, .opc1 = 4, .crn = 8, .crm = 7, .opc2 = 0,
-      .type = ARM_CP_NO_RAW, .access = PL2_W,
-      .writefn = tlbiall_hyp_write },
-    { .name = "TLBIALLHIS", .cp = 15, .opc1 = 4, .crn = 8, .crm = 3, .opc2 = 0,
-      .type = ARM_CP_NO_RAW, .access = PL2_W,
-      .writefn = tlbiall_hyp_is_write },
-    { .name = "TLBIMVAH", .cp = 15, .opc1 = 4, .crn = 8, .crm = 7, .opc2 = 1,
-      .type = ARM_CP_NO_RAW, .access = PL2_W,
-      .writefn = tlbimva_hyp_write },
-    { .name = "TLBIMVAHIS", .cp = 15, .opc1 = 4, .crn = 8, .crm = 3, .opc2 = 1,
-      .type = ARM_CP_NO_RAW, .access = PL2_W,
-      .writefn = tlbimva_hyp_is_write },
     { .name = "TLBI_ALLE2", .state = ARM_CP_STATE_AA64,
       .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 7, .opc2 = 0,
       .access = PL2_W, .type = ARM_CP_NO_RAW | ARM_CP_EL3_NO_EL2_UNDEF,
diff --git a/target/arm/tcg/tlb-insns.c b/target/arm/tcg/tlb-insns.c
index cdf23352d7a..66096093dcc 100644
--- a/target/arm/tcg/tlb-insns.c
+++ b/target/arm/tcg/tlb-insns.c
@@ -99,6 +99,25 @@ static void tlbimvaa_write(CPUARMState *env, const 
ARMCPRegInfo *ri,
     }
 }
 
+static void tlbimva_hyp_write(CPUARMState *env, const ARMCPRegInfo *ri,
+                              uint64_t value)
+{
+    CPUState *cs = env_cpu(env);
+    uint64_t pageaddr = value & ~MAKE_64BIT_MASK(0, 12);
+
+    tlb_flush_page_by_mmuidx(cs, pageaddr, ARMMMUIdxBit_E2);
+}
+
+static void tlbimva_hyp_is_write(CPUARMState *env, const ARMCPRegInfo *ri,
+                                 uint64_t value)
+{
+    CPUState *cs = env_cpu(env);
+    uint64_t pageaddr = value & ~MAKE_64BIT_MASK(0, 12);
+
+    tlb_flush_page_by_mmuidx_all_cpus_synced(cs, pageaddr,
+                                             ARMMMUIdxBit_E2);
+}
+
 static void tlbiipas2_hyp_write(CPUARMState *env, const ARMCPRegInfo *ri,
                                 uint64_t value)
 {
@@ -117,6 +136,39 @@ static void tlbiipas2is_hyp_write(CPUARMState *env, const 
ARMCPRegInfo *ri,
     tlb_flush_page_by_mmuidx_all_cpus_synced(cs, pageaddr, 
ARMMMUIdxBit_Stage2);
 }
 
+static void tlbiall_nsnh_write(CPUARMState *env, const ARMCPRegInfo *ri,
+                               uint64_t value)
+{
+    CPUState *cs = env_cpu(env);
+
+    tlb_flush_by_mmuidx(cs, alle1_tlbmask(env));
+}
+
+static void tlbiall_nsnh_is_write(CPUARMState *env, const ARMCPRegInfo *ri,
+                                  uint64_t value)
+{
+    CPUState *cs = env_cpu(env);
+
+    tlb_flush_by_mmuidx_all_cpus_synced(cs, alle1_tlbmask(env));
+}
+
+
+static void tlbiall_hyp_write(CPUARMState *env, const ARMCPRegInfo *ri,
+                              uint64_t value)
+{
+    CPUState *cs = env_cpu(env);
+
+    tlb_flush_by_mmuidx(cs, ARMMMUIdxBit_E2);
+}
+
+static void tlbiall_hyp_is_write(CPUARMState *env, const ARMCPRegInfo *ri,
+                                 uint64_t value)
+{
+    CPUState *cs = env_cpu(env);
+
+    tlb_flush_by_mmuidx_all_cpus_synced(cs, ARMMMUIdxBit_E2);
+}
+
 static const ARMCPRegInfo tlbi_not_v7_cp_reginfo[] = {
     /*
      * MMU TLB control. Note that the wildcarding means we cover not just
@@ -227,6 +279,29 @@ static const ARMCPRegInfo tlbi_v8_cp_reginfo[] = {
       .writefn = tlbiipas2is_hyp_write },
 };
 
+static const ARMCPRegInfo tlbi_el2_cp_reginfo[] = {
+    { .name = "TLBIALLNSNH",
+      .cp = 15, .opc1 = 4, .crn = 8, .crm = 7, .opc2 = 4,
+      .type = ARM_CP_NO_RAW, .access = PL2_W,
+      .writefn = tlbiall_nsnh_write },
+    { .name = "TLBIALLNSNHIS",
+      .cp = 15, .opc1 = 4, .crn = 8, .crm = 3, .opc2 = 4,
+      .type = ARM_CP_NO_RAW, .access = PL2_W,
+      .writefn = tlbiall_nsnh_is_write },
+    { .name = "TLBIALLH", .cp = 15, .opc1 = 4, .crn = 8, .crm = 7, .opc2 = 0,
+      .type = ARM_CP_NO_RAW, .access = PL2_W,
+      .writefn = tlbiall_hyp_write },
+    { .name = "TLBIALLHIS", .cp = 15, .opc1 = 4, .crn = 8, .crm = 3, .opc2 = 0,
+      .type = ARM_CP_NO_RAW, .access = PL2_W,
+      .writefn = tlbiall_hyp_is_write },
+    { .name = "TLBIMVAH", .cp = 15, .opc1 = 4, .crn = 8, .crm = 7, .opc2 = 1,
+      .type = ARM_CP_NO_RAW, .access = PL2_W,
+      .writefn = tlbimva_hyp_write },
+    { .name = "TLBIMVAHIS", .cp = 15, .opc1 = 4, .crn = 8, .crm = 3, .opc2 = 1,
+      .type = ARM_CP_NO_RAW, .access = PL2_W,
+      .writefn = tlbimva_hyp_is_write },
+};
+
 void define_tlb_insn_regs(ARMCPU *cpu)
 {
     CPUARMState *env = &cpu->env;
@@ -243,4 +318,14 @@ void define_tlb_insn_regs(ARMCPU *cpu)
     if (arm_feature(env, ARM_FEATURE_V8)) {
         define_arm_cp_regs(cpu, tlbi_v8_cp_reginfo);
     }
+    /*
+     * We retain the existing logic for when to register these TLBI
+     * ops (i.e. matching the condition for el2_cp_reginfo[] in
+     * helper.c), but we will be able to simplify this later.
+     */
+    if (arm_feature(env, ARM_FEATURE_EL2)
+        || (arm_feature(env, ARM_FEATURE_EL3)
+            && arm_feature(env, ARM_FEATURE_V8))) {
+        define_arm_cp_regs(cpu, tlbi_el2_cp_reginfo);
+    }
 }
-- 
2.34.1