diff options
Diffstat (limited to 'linux-user/aarch64/cpu_loop.c')
| -rw-r--r-- | linux-user/aarch64/cpu_loop.c | 29 |
1 files changed, 6 insertions, 23 deletions
diff --git a/linux-user/aarch64/cpu_loop.c b/linux-user/aarch64/cpu_loop.c index d75fd9d3e2..cedad39ca0 100644 --- a/linux-user/aarch64/cpu_loop.c +++ b/linux-user/aarch64/cpu_loop.c @@ -20,6 +20,7 @@ #include "qemu/osdep.h" #include "qemu.h" #include "cpu_loop-common.h" +#include "qemu/guest-random.h" #define get_user_code_u32(x, gaddr, env) \ ({ abi_long __r = get_user_u32((x), (gaddr)); \ @@ -147,24 +148,6 @@ void cpu_loop(CPUARMState *env) } } -static uint64_t arm_rand64(void) -{ - int shift = 64 - clz64(RAND_MAX); - int i, n = 64 / shift + (64 % shift != 0); - uint64_t ret = 0; - - for (i = 0; i < n; i++) { - ret = (ret << shift) | rand(); - } - return ret; -} - -void arm_init_pauth_key(ARMPACKey *key) -{ - key->lo = arm_rand64(); - key->hi = arm_rand64(); -} - void target_cpu_copy_regs(CPUArchState *env, struct target_pt_regs *regs) { ARMCPU *cpu = arm_env_get_cpu(env); @@ -192,11 +175,11 @@ void target_cpu_copy_regs(CPUArchState *env, struct target_pt_regs *regs) #endif if (cpu_isar_feature(aa64_pauth, cpu)) { - arm_init_pauth_key(&env->apia_key); - arm_init_pauth_key(&env->apib_key); - arm_init_pauth_key(&env->apda_key); - arm_init_pauth_key(&env->apdb_key); - arm_init_pauth_key(&env->apga_key); + 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)); } ts->stack_base = info->start_stack; |