diff options
| -rw-r--r-- | linux-user/aarch64/signal.c | 42 |
1 files changed, 40 insertions, 2 deletions
diff --git a/linux-user/aarch64/signal.c b/linux-user/aarch64/signal.c index 6514b73ad9..f28ba80754 100644 --- a/linux-user/aarch64/signal.c +++ b/linux-user/aarch64/signal.c @@ -121,6 +121,13 @@ struct target_za_context { #define TARGET_ZA_SIG_CONTEXT_SIZE(VQ) \ TARGET_ZA_SIG_ZAV_OFFSET(VQ, VQ * TARGET_SVE_VQ_BYTES) +#define TARGET_TPIDR2_MAGIC 0x54504902 + +struct target_tpidr2_context { + struct target_aarch64_ctx head; + uint64_t tpidr2; +}; + struct target_rt_sigframe { struct target_siginfo info; struct target_ucontext uc; @@ -253,6 +260,14 @@ static void target_setup_za_record(struct target_za_context *za, } } +static void target_setup_tpidr2_record(struct target_tpidr2_context *tpidr2, + CPUARMState *env) +{ + __put_user(TARGET_TPIDR2_MAGIC, &tpidr2->head.magic); + __put_user(sizeof(struct target_tpidr2_context), &tpidr2->head.size); + __put_user(env->cp15.tpidr2_el0, &tpidr2->tpidr2); +} + static void target_restore_general_frame(CPUARMState *env, struct target_rt_sigframe *sf) { @@ -403,6 +418,12 @@ static bool target_restore_za_record(CPUARMState *env, return true; } +static void target_restore_tpidr2_record(CPUARMState *env, + struct target_tpidr2_context *tpidr2) +{ + __get_user(env->cp15.tpidr2_el0, &tpidr2->tpidr2); +} + static int target_restore_sigframe(CPUARMState *env, struct target_rt_sigframe *sf) { @@ -410,6 +431,7 @@ static int target_restore_sigframe(CPUARMState *env, struct target_fpsimd_context *fpsimd = NULL; struct target_sve_context *sve = NULL; struct target_za_context *za = NULL; + struct target_tpidr2_context *tpidr2 = NULL; uint64_t extra_datap = 0; bool used_extra = false; int sve_size = 0; @@ -460,6 +482,14 @@ static int target_restore_sigframe(CPUARMState *env, za_size = size; break; + case TARGET_TPIDR2_MAGIC: + if (tpidr2 || size != sizeof(struct target_tpidr2_context) || + !cpu_isar_feature(aa64_sme, env_archcpu(env))) { + goto err; + } + tpidr2 = (struct target_tpidr2_context *)ctx; + break; + case TARGET_EXTRA_MAGIC: if (extra || size != sizeof(struct target_extra_context)) { goto err; @@ -497,6 +527,9 @@ static int target_restore_sigframe(CPUARMState *env, if (za && !target_restore_za_record(env, za, za_size, &svcr)) { goto err; } + if (tpidr2) { + target_restore_tpidr2_record(env, tpidr2); + } if (env->svcr != svcr) { env->svcr = svcr; arm_rebuild_hflags(env); @@ -568,8 +601,8 @@ static void target_setup_frame(int usig, struct target_sigaction *ka, .total_size = offsetof(struct target_rt_sigframe, uc.tuc_mcontext.__reserved), }; - int fpsimd_ofs, fr_ofs, sve_ofs = 0, za_ofs = 0; - int sve_size = 0, za_size = 0; + int fpsimd_ofs, fr_ofs, sve_ofs = 0, za_ofs = 0, tpidr2_ofs = 0; + int sve_size = 0, za_size = 0, tpidr2_size = 0; struct target_rt_sigframe *frame; struct target_rt_frame_record *fr; abi_ulong frame_addr, return_addr; @@ -585,6 +618,8 @@ static void target_setup_frame(int usig, struct target_sigaction *ka, sve_ofs = alloc_sigframe_space(sve_size, &layout); } if (cpu_isar_feature(aa64_sme, env_archcpu(env))) { + tpidr2_size = sizeof(struct target_tpidr2_context); + tpidr2_ofs = alloc_sigframe_space(tpidr2_size, &layout); /* ZA state needs saving only if it is enabled. */ if (FIELD_EX64(env->svcr, SVCR, ZA)) { za_size = TARGET_ZA_SIG_CONTEXT_SIZE(sme_vq(env)); @@ -644,6 +679,9 @@ static void target_setup_frame(int usig, struct target_sigaction *ka, if (za_ofs) { target_setup_za_record((void *)frame + za_ofs, env, za_size); } + if (tpidr2_ofs) { + target_setup_tpidr2_record((void *)frame + tpidr2_ofs, env); + } /* Set up the stack frame for unwinding. */ fr = (void *)frame + fr_ofs; |