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target/arm: Put all PAC keys into a structure 

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

Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2019-03-14 17:28:32 -07:00
parent e8196d2111
commit 108b3ba891
5 changed files with 32 additions and 34 deletions
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6
linux-user/aarch64/cpu_loop.c
View File

@ -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;

10
linux-user/syscall.c
View File

@ -9775,23 +9775,23 @@ 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) {

12
target/arm/cpu.h
View File

@ -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)

20
target/arm/helper.c
View File

@ -5707,43 +5707,43 @@ 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

18
target/arm/pauth_helper.c
View File

@ -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)