[Qemu-devel] [PATCH v4 21/24] target/arm: Put all PAC keys into a structure

[Richard Henderson <richard.henderson@linaro.org>]

This allows us to use a single syscall to initialize them all.

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/arm/cpu.h              | 12 +++++++-----
 linux-user/aarch64/cpu_loop.c |  6 +-----
 linux-user/syscall.c          | 10 +++++-----
 target/arm/helper.c           | 20 ++++++++++----------
 target/arm/pauth_helper.c     | 18 +++++++++---------
 5 files changed, 32 insertions(+), 34 deletions(-)

diff --git a/target/arm/cpu.h b/target/arm/cpu.h
index 22bc6e00ab..9448a76186 100644
--- a/target/arm/cpu.h
+++ b/target/arm/cpu.h
@@ -636,11 +636,13 @@ typedef struct CPUARMState {
     } iwmmxt;
 
 #ifdef TARGET_AARCH64
-    ARMPACKey apia_key;
-    ARMPACKey apib_key;
-    ARMPACKey apda_key;
-    ARMPACKey apdb_key;
-    ARMPACKey apga_key;
+    struct {
+        ARMPACKey apia;
+        ARMPACKey apib;
+        ARMPACKey apda;
+        ARMPACKey apdb;
+        ARMPACKey apga;
+    } keys;
 #endif
 
 #if defined(CONFIG_USER_ONLY)
diff --git a/linux-user/aarch64/cpu_loop.c b/linux-user/aarch64/cpu_loop.c
index cedad39ca0..2f2f63e3e8 100644
--- a/linux-user/aarch64/cpu_loop.c
+++ b/linux-user/aarch64/cpu_loop.c
@@ -175,11 +175,7 @@ void target_cpu_copy_regs(CPUArchState *env, struct target_pt_regs *regs)
 #endif
 
     if (cpu_isar_feature(aa64_pauth, cpu)) {
-        qemu_guest_getrandom_nofail(&env->apia_key, sizeof(ARMPACKey));
-        qemu_guest_getrandom_nofail(&env->apib_key, sizeof(ARMPACKey));
-        qemu_guest_getrandom_nofail(&env->apda_key, sizeof(ARMPACKey));
-        qemu_guest_getrandom_nofail(&env->apdb_key, sizeof(ARMPACKey));
-        qemu_guest_getrandom_nofail(&env->apga_key, sizeof(ARMPACKey));
+        qemu_guest_getrandom_nofail(&env->keys, sizeof(env->keys));
     }
 
     ts->stack_base = info->start_stack;
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index b73d1d9f65..3c26f6f9d4 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -9734,23 +9734,23 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1,
                         return -TARGET_EINVAL;
                     }
                     if (arg2 & TARGET_PR_PAC_APIAKEY) {
-                        ret |= qemu_guest_getrandom(&env->apia_key,
+                        ret |= qemu_guest_getrandom(&env->keys.apia,
                                                     sizeof(ARMPACKey), &err);
                     }
                     if (arg2 & TARGET_PR_PAC_APIBKEY) {
-                        ret |= qemu_guest_getrandom(&env->apib_key,
+                        ret |= qemu_guest_getrandom(&env->keys.apib,
                                                     sizeof(ARMPACKey), &err);
                     }
                     if (arg2 & TARGET_PR_PAC_APDAKEY) {
-                        ret |= qemu_guest_getrandom(&env->apda_key,
+                        ret |= qemu_guest_getrandom(&env->keys.apda,
                                                     sizeof(ARMPACKey), &err);
                     }
                     if (arg2 & TARGET_PR_PAC_APDBKEY) {
-                        ret |= qemu_guest_getrandom(&env->apdb_key,
+                        ret |= qemu_guest_getrandom(&env->keys.apdb,
                                                     sizeof(ARMPACKey), &err);
                     }
                     if (arg2 & TARGET_PR_PAC_APGAKEY) {
-                        ret |= qemu_guest_getrandom(&env->apga_key,
+                        ret |= qemu_guest_getrandom(&env->keys.apga,
                                                     sizeof(ARMPACKey), &err);
                     }
                     if (ret != 0) {
diff --git a/target/arm/helper.c b/target/arm/helper.c
index 81a92ab491..658a5a9822 100644
--- a/target/arm/helper.c
+++ b/target/arm/helper.c
@@ -5683,43 +5683,43 @@ static const ARMCPRegInfo pauth_reginfo[] = {
     { .name = "APDAKEYLO_EL1", .state = ARM_CP_STATE_AA64,
       .opc0 = 3, .opc1 = 0, .crn = 2, .crm = 2, .opc2 = 0,
       .access = PL1_RW, .accessfn = access_pauth,
-      .fieldoffset = offsetof(CPUARMState, apda_key.lo) },
+      .fieldoffset = offsetof(CPUARMState, keys.apda.lo) },
     { .name = "APDAKEYHI_EL1", .state = ARM_CP_STATE_AA64,
       .opc0 = 3, .opc1 = 0, .crn = 2, .crm = 2, .opc2 = 1,
       .access = PL1_RW, .accessfn = access_pauth,
-      .fieldoffset = offsetof(CPUARMState, apda_key.hi) },
+      .fieldoffset = offsetof(CPUARMState, keys.apda.hi) },
     { .name = "APDBKEYLO_EL1", .state = ARM_CP_STATE_AA64,
       .opc0 = 3, .opc1 = 0, .crn = 2, .crm = 2, .opc2 = 2,
       .access = PL1_RW, .accessfn = access_pauth,
-      .fieldoffset = offsetof(CPUARMState, apdb_key.lo) },
+      .fieldoffset = offsetof(CPUARMState, keys.apdb.lo) },
     { .name = "APDBKEYHI_EL1", .state = ARM_CP_STATE_AA64,
       .opc0 = 3, .opc1 = 0, .crn = 2, .crm = 2, .opc2 = 3,
       .access = PL1_RW, .accessfn = access_pauth,
-      .fieldoffset = offsetof(CPUARMState, apdb_key.hi) },
+      .fieldoffset = offsetof(CPUARMState, keys.apdb.hi) },
     { .name = "APGAKEYLO_EL1", .state = ARM_CP_STATE_AA64,
       .opc0 = 3, .opc1 = 0, .crn = 2, .crm = 3, .opc2 = 0,
       .access = PL1_RW, .accessfn = access_pauth,
-      .fieldoffset = offsetof(CPUARMState, apga_key.lo) },
+      .fieldoffset = offsetof(CPUARMState, keys.apga.lo) },
     { .name = "APGAKEYHI_EL1", .state = ARM_CP_STATE_AA64,
       .opc0 = 3, .opc1 = 0, .crn = 2, .crm = 3, .opc2 = 1,
       .access = PL1_RW, .accessfn = access_pauth,
-      .fieldoffset = offsetof(CPUARMState, apga_key.hi) },
+      .fieldoffset = offsetof(CPUARMState, keys.apga.hi) },
     { .name = "APIAKEYLO_EL1", .state = ARM_CP_STATE_AA64,
       .opc0 = 3, .opc1 = 0, .crn = 2, .crm = 1, .opc2 = 0,
       .access = PL1_RW, .accessfn = access_pauth,
-      .fieldoffset = offsetof(CPUARMState, apia_key.lo) },
+      .fieldoffset = offsetof(CPUARMState, keys.apia.lo) },
     { .name = "APIAKEYHI_EL1", .state = ARM_CP_STATE_AA64,
       .opc0 = 3, .opc1 = 0, .crn = 2, .crm = 1, .opc2 = 1,
       .access = PL1_RW, .accessfn = access_pauth,
-      .fieldoffset = offsetof(CPUARMState, apia_key.hi) },
+      .fieldoffset = offsetof(CPUARMState, keys.apia.hi) },
     { .name = "APIBKEYLO_EL1", .state = ARM_CP_STATE_AA64,
       .opc0 = 3, .opc1 = 0, .crn = 2, .crm = 1, .opc2 = 2,
       .access = PL1_RW, .accessfn = access_pauth,
-      .fieldoffset = offsetof(CPUARMState, apib_key.lo) },
+      .fieldoffset = offsetof(CPUARMState, keys.apib.lo) },
     { .name = "APIBKEYHI_EL1", .state = ARM_CP_STATE_AA64,
       .opc0 = 3, .opc1 = 0, .crn = 2, .crm = 1, .opc2 = 3,
       .access = PL1_RW, .accessfn = access_pauth,
-      .fieldoffset = offsetof(CPUARMState, apib_key.hi) },
+      .fieldoffset = offsetof(CPUARMState, keys.apib.hi) },
     REGINFO_SENTINEL
 };
 #endif
diff --git a/target/arm/pauth_helper.c b/target/arm/pauth_helper.c
index d750f96edf..7f30ae7395 100644
--- a/target/arm/pauth_helper.c
+++ b/target/arm/pauth_helper.c
@@ -403,7 +403,7 @@ uint64_t HELPER(pacia)(CPUARMState *env, uint64_t x, uint64_t y)
         return x;
     }
     pauth_check_trap(env, el, GETPC());
-    return pauth_addpac(env, x, y, &env->apia_key, false);
+    return pauth_addpac(env, x, y, &env->keys.apia, false);
 }
 
 uint64_t HELPER(pacib)(CPUARMState *env, uint64_t x, uint64_t y)
@@ -413,7 +413,7 @@ uint64_t HELPER(pacib)(CPUARMState *env, uint64_t x, uint64_t y)
         return x;
     }
     pauth_check_trap(env, el, GETPC());
-    return pauth_addpac(env, x, y, &env->apib_key, false);
+    return pauth_addpac(env, x, y, &env->keys.apib, false);
 }
 
 uint64_t HELPER(pacda)(CPUARMState *env, uint64_t x, uint64_t y)
@@ -423,7 +423,7 @@ uint64_t HELPER(pacda)(CPUARMState *env, uint64_t x, uint64_t y)
         return x;
     }
     pauth_check_trap(env, el, GETPC());
-    return pauth_addpac(env, x, y, &env->apda_key, true);
+    return pauth_addpac(env, x, y, &env->keys.apda, true);
 }
 
 uint64_t HELPER(pacdb)(CPUARMState *env, uint64_t x, uint64_t y)
@@ -433,7 +433,7 @@ uint64_t HELPER(pacdb)(CPUARMState *env, uint64_t x, uint64_t y)
         return x;
     }
     pauth_check_trap(env, el, GETPC());
-    return pauth_addpac(env, x, y, &env->apdb_key, true);
+    return pauth_addpac(env, x, y, &env->keys.apdb, true);
 }
 
 uint64_t HELPER(pacga)(CPUARMState *env, uint64_t x, uint64_t y)
@@ -441,7 +441,7 @@ uint64_t HELPER(pacga)(CPUARMState *env, uint64_t x, uint64_t y)
     uint64_t pac;
 
     pauth_check_trap(env, arm_current_el(env), GETPC());
-    pac = pauth_computepac(x, y, env->apga_key);
+    pac = pauth_computepac(x, y, env->keys.apga);
 
     return pac & 0xffffffff00000000ull;
 }
@@ -453,7 +453,7 @@ uint64_t HELPER(autia)(CPUARMState *env, uint64_t x, uint64_t y)
         return x;
     }
     pauth_check_trap(env, el, GETPC());
-    return pauth_auth(env, x, y, &env->apia_key, false, 0);
+    return pauth_auth(env, x, y, &env->keys.apia, false, 0);
 }
 
 uint64_t HELPER(autib)(CPUARMState *env, uint64_t x, uint64_t y)
@@ -463,7 +463,7 @@ uint64_t HELPER(autib)(CPUARMState *env, uint64_t x, uint64_t y)
         return x;
     }
     pauth_check_trap(env, el, GETPC());
-    return pauth_auth(env, x, y, &env->apib_key, false, 1);
+    return pauth_auth(env, x, y, &env->keys.apib, false, 1);
 }
 
 uint64_t HELPER(autda)(CPUARMState *env, uint64_t x, uint64_t y)
@@ -473,7 +473,7 @@ uint64_t HELPER(autda)(CPUARMState *env, uint64_t x, uint64_t y)
         return x;
     }
     pauth_check_trap(env, el, GETPC());
-    return pauth_auth(env, x, y, &env->apda_key, true, 0);
+    return pauth_auth(env, x, y, &env->keys.apda, true, 0);
 }
 
 uint64_t HELPER(autdb)(CPUARMState *env, uint64_t x, uint64_t y)
@@ -483,7 +483,7 @@ uint64_t HELPER(autdb)(CPUARMState *env, uint64_t x, uint64_t y)
         return x;
     }
     pauth_check_trap(env, el, GETPC());
-    return pauth_auth(env, x, y, &env->apdb_key, true, 1);
+    return pauth_auth(env, x, y, &env->keys.apdb, true, 1);
 }
 
 uint64_t HELPER(xpaci)(CPUARMState *env, uint64_t a)
-- 
2.17.1