diff options
| -rw-r--r-- | linux-user/alpha/signal.c | 262 | ||||
| -rw-r--r-- | linux-user/alpha/target_signal.h | 5 | ||||
| -rw-r--r-- | linux-user/signal.c | 259 |
3 files changed, 267 insertions, 259 deletions
diff --git a/linux-user/alpha/signal.c b/linux-user/alpha/signal.c index 02ca338b6c..a8c718f2c6 100644 --- a/linux-user/alpha/signal.c +++ b/linux-user/alpha/signal.c @@ -16,3 +16,265 @@ * You should have received a copy of the GNU General Public License * along with this program; if not, see <http://www.gnu.org/licenses/>. */ +#include "qemu/osdep.h" +#include "qemu.h" +#include "target_signal.h" +#include "signal-common.h" +#include "linux-user/trace.h" + +struct target_sigcontext { + abi_long sc_onstack; + abi_long sc_mask; + abi_long sc_pc; + abi_long sc_ps; + abi_long sc_regs[32]; + abi_long sc_ownedfp; + abi_long sc_fpregs[32]; + abi_ulong sc_fpcr; + abi_ulong sc_fp_control; + abi_ulong sc_reserved1; + abi_ulong sc_reserved2; + abi_ulong sc_ssize; + abi_ulong sc_sbase; + abi_ulong sc_traparg_a0; + abi_ulong sc_traparg_a1; + abi_ulong sc_traparg_a2; + abi_ulong sc_fp_trap_pc; + abi_ulong sc_fp_trigger_sum; + abi_ulong sc_fp_trigger_inst; +}; + +struct target_ucontext { + abi_ulong tuc_flags; + abi_ulong tuc_link; + abi_ulong tuc_osf_sigmask; + target_stack_t tuc_stack; + struct target_sigcontext tuc_mcontext; + target_sigset_t tuc_sigmask; +}; + +struct target_sigframe { + struct target_sigcontext sc; + unsigned int retcode[3]; +}; + +struct target_rt_sigframe { + target_siginfo_t info; + struct target_ucontext uc; + unsigned int retcode[3]; +}; + +#define INSN_MOV_R30_R16 0x47fe0410 +#define INSN_LDI_R0 0x201f0000 +#define INSN_CALLSYS 0x00000083 + +static void setup_sigcontext(struct target_sigcontext *sc, CPUAlphaState *env, + abi_ulong frame_addr, target_sigset_t *set) +{ + int i; + + __put_user(on_sig_stack(frame_addr), &sc->sc_onstack); + __put_user(set->sig[0], &sc->sc_mask); + __put_user(env->pc, &sc->sc_pc); + __put_user(8, &sc->sc_ps); + + for (i = 0; i < 31; ++i) { + __put_user(env->ir[i], &sc->sc_regs[i]); + } + __put_user(0, &sc->sc_regs[31]); + + for (i = 0; i < 31; ++i) { + __put_user(env->fir[i], &sc->sc_fpregs[i]); + } + __put_user(0, &sc->sc_fpregs[31]); + __put_user(cpu_alpha_load_fpcr(env), &sc->sc_fpcr); + + __put_user(0, &sc->sc_traparg_a0); /* FIXME */ + __put_user(0, &sc->sc_traparg_a1); /* FIXME */ + __put_user(0, &sc->sc_traparg_a2); /* FIXME */ +} + +static void restore_sigcontext(CPUAlphaState *env, + struct target_sigcontext *sc) +{ + uint64_t fpcr; + int i; + + __get_user(env->pc, &sc->sc_pc); + + for (i = 0; i < 31; ++i) { + __get_user(env->ir[i], &sc->sc_regs[i]); + } + for (i = 0; i < 31; ++i) { + __get_user(env->fir[i], &sc->sc_fpregs[i]); + } + + __get_user(fpcr, &sc->sc_fpcr); + cpu_alpha_store_fpcr(env, fpcr); +} + +static inline abi_ulong get_sigframe(struct target_sigaction *sa, + CPUAlphaState *env, + unsigned long framesize) +{ + abi_ulong sp = env->ir[IR_SP]; + + /* This is the X/Open sanctioned signal stack switching. */ + if ((sa->sa_flags & TARGET_SA_ONSTACK) != 0 && !sas_ss_flags(sp)) { + sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; + } + return (sp - framesize) & -32; +} + +void setup_frame(int sig, struct target_sigaction *ka, + target_sigset_t *set, CPUAlphaState *env) +{ + abi_ulong frame_addr, r26; + struct target_sigframe *frame; + int err = 0; + + frame_addr = get_sigframe(ka, env, sizeof(*frame)); + trace_user_setup_frame(env, frame_addr); + if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) { + goto give_sigsegv; + } + + setup_sigcontext(&frame->sc, env, frame_addr, set); + + if (ka->sa_restorer) { + r26 = ka->sa_restorer; + } else { + __put_user(INSN_MOV_R30_R16, &frame->retcode[0]); + __put_user(INSN_LDI_R0 + TARGET_NR_sigreturn, + &frame->retcode[1]); + __put_user(INSN_CALLSYS, &frame->retcode[2]); + /* imb() */ + r26 = frame_addr + offsetof(struct target_sigframe, retcode); + } + + unlock_user_struct(frame, frame_addr, 1); + + if (err) { +give_sigsegv: + force_sigsegv(sig); + return; + } + + env->ir[IR_RA] = r26; + env->ir[IR_PV] = env->pc = ka->_sa_handler; + env->ir[IR_A0] = sig; + env->ir[IR_A1] = 0; + env->ir[IR_A2] = frame_addr + offsetof(struct target_sigframe, sc); + env->ir[IR_SP] = frame_addr; +} + +void setup_rt_frame(int sig, struct target_sigaction *ka, + target_siginfo_t *info, + target_sigset_t *set, CPUAlphaState *env) +{ + abi_ulong frame_addr, r26; + struct target_rt_sigframe *frame; + int i, err = 0; + + frame_addr = get_sigframe(ka, env, sizeof(*frame)); + trace_user_setup_rt_frame(env, frame_addr); + if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) { + goto give_sigsegv; + } + + tswap_siginfo(&frame->info, info); + + __put_user(0, &frame->uc.tuc_flags); + __put_user(0, &frame->uc.tuc_link); + __put_user(set->sig[0], &frame->uc.tuc_osf_sigmask); + __put_user(target_sigaltstack_used.ss_sp, + &frame->uc.tuc_stack.ss_sp); + __put_user(sas_ss_flags(env->ir[IR_SP]), + &frame->uc.tuc_stack.ss_flags); + __put_user(target_sigaltstack_used.ss_size, + &frame->uc.tuc_stack.ss_size); + setup_sigcontext(&frame->uc.tuc_mcontext, env, frame_addr, set); + for (i = 0; i < TARGET_NSIG_WORDS; ++i) { + __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]); + } + + if (ka->sa_restorer) { + r26 = ka->sa_restorer; + } else { + __put_user(INSN_MOV_R30_R16, &frame->retcode[0]); + __put_user(INSN_LDI_R0 + TARGET_NR_rt_sigreturn, + &frame->retcode[1]); + __put_user(INSN_CALLSYS, &frame->retcode[2]); + /* imb(); */ + r26 = frame_addr + offsetof(struct target_sigframe, retcode); + } + + if (err) { +give_sigsegv: + force_sigsegv(sig); + return; + } + + env->ir[IR_RA] = r26; + env->ir[IR_PV] = env->pc = ka->_sa_handler; + env->ir[IR_A0] = sig; + env->ir[IR_A1] = frame_addr + offsetof(struct target_rt_sigframe, info); + env->ir[IR_A2] = frame_addr + offsetof(struct target_rt_sigframe, uc); + env->ir[IR_SP] = frame_addr; +} + +long do_sigreturn(CPUAlphaState *env) +{ + struct target_sigcontext *sc; + abi_ulong sc_addr = env->ir[IR_A0]; + target_sigset_t target_set; + sigset_t set; + + if (!lock_user_struct(VERIFY_READ, sc, sc_addr, 1)) { + goto badframe; + } + + target_sigemptyset(&target_set); + __get_user(target_set.sig[0], &sc->sc_mask); + + target_to_host_sigset_internal(&set, &target_set); + set_sigmask(&set); + + restore_sigcontext(env, sc); + unlock_user_struct(sc, sc_addr, 0); + return -TARGET_QEMU_ESIGRETURN; + +badframe: + force_sig(TARGET_SIGSEGV); + return -TARGET_QEMU_ESIGRETURN; +} + +long do_rt_sigreturn(CPUAlphaState *env) +{ + abi_ulong frame_addr = env->ir[IR_A0]; + struct target_rt_sigframe *frame; + sigset_t set; + + trace_user_do_rt_sigreturn(env, frame_addr); + if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) { + goto badframe; + } + target_to_host_sigset(&set, &frame->uc.tuc_sigmask); + set_sigmask(&set); + + restore_sigcontext(env, &frame->uc.tuc_mcontext); + if (do_sigaltstack(frame_addr + offsetof(struct target_rt_sigframe, + uc.tuc_stack), + 0, env->ir[IR_SP]) == -EFAULT) { + goto badframe; + } + + unlock_user_struct(frame, frame_addr, 0); + return -TARGET_QEMU_ESIGRETURN; + + +badframe: + unlock_user_struct(frame, frame_addr, 0); + force_sig(TARGET_SIGSEGV); + return -TARGET_QEMU_ESIGRETURN; +} diff --git a/linux-user/alpha/target_signal.h b/linux-user/alpha/target_signal.h index f1ed00d50e..42343a1ae6 100644 --- a/linux-user/alpha/target_signal.h +++ b/linux-user/alpha/target_signal.h @@ -55,4 +55,9 @@ static inline abi_ulong get_sp_from_cpustate(CPUAlphaState *state) #define TARGET_GEN_SUBRNG6 -24 #define TARGET_GEN_SUBRNG7 -25 +void setup_frame(int sig, struct target_sigaction *ka, + target_sigset_t *set, CPUAlphaState *env); +void setup_rt_frame(int sig, struct target_sigaction *ka, + target_siginfo_t *info, + target_sigset_t *set, CPUAlphaState *env); #endif /* ALPHA_TARGET_SIGNAL_H */ diff --git a/linux-user/signal.c b/linux-user/signal.c index 16b1caad8b..7c2a963e7c 100644 --- a/linux-user/signal.c +++ b/linux-user/signal.c @@ -3032,265 +3032,6 @@ sigsegv: return -TARGET_QEMU_ESIGRETURN; } -#elif defined(TARGET_ALPHA) - -struct target_sigcontext { - abi_long sc_onstack; - abi_long sc_mask; - abi_long sc_pc; - abi_long sc_ps; - abi_long sc_regs[32]; - abi_long sc_ownedfp; - abi_long sc_fpregs[32]; - abi_ulong sc_fpcr; - abi_ulong sc_fp_control; - abi_ulong sc_reserved1; - abi_ulong sc_reserved2; - abi_ulong sc_ssize; - abi_ulong sc_sbase; - abi_ulong sc_traparg_a0; - abi_ulong sc_traparg_a1; - abi_ulong sc_traparg_a2; - abi_ulong sc_fp_trap_pc; - abi_ulong sc_fp_trigger_sum; - abi_ulong sc_fp_trigger_inst; -}; - -struct target_ucontext { - abi_ulong tuc_flags; - abi_ulong tuc_link; - abi_ulong tuc_osf_sigmask; - target_stack_t tuc_stack; - struct target_sigcontext tuc_mcontext; - target_sigset_t tuc_sigmask; -}; - -struct target_sigframe { - struct target_sigcontext sc; - unsigned int retcode[3]; -}; - -struct target_rt_sigframe { - target_siginfo_t info; - struct target_ucontext uc; - unsigned int retcode[3]; -}; - -#define INSN_MOV_R30_R16 0x47fe0410 -#define INSN_LDI_R0 0x201f0000 -#define INSN_CALLSYS 0x00000083 - -static void setup_sigcontext(struct target_sigcontext *sc, CPUAlphaState *env, - abi_ulong frame_addr, target_sigset_t *set) -{ - int i; - - __put_user(on_sig_stack(frame_addr), &sc->sc_onstack); - __put_user(set->sig[0], &sc->sc_mask); - __put_user(env->pc, &sc->sc_pc); - __put_user(8, &sc->sc_ps); - - for (i = 0; i < 31; ++i) { - __put_user(env->ir[i], &sc->sc_regs[i]); - } - __put_user(0, &sc->sc_regs[31]); - - for (i = 0; i < 31; ++i) { - __put_user(env->fir[i], &sc->sc_fpregs[i]); - } - __put_user(0, &sc->sc_fpregs[31]); - __put_user(cpu_alpha_load_fpcr(env), &sc->sc_fpcr); - - __put_user(0, &sc->sc_traparg_a0); /* FIXME */ - __put_user(0, &sc->sc_traparg_a1); /* FIXME */ - __put_user(0, &sc->sc_traparg_a2); /* FIXME */ -} - -static void restore_sigcontext(CPUAlphaState *env, - struct target_sigcontext *sc) -{ - uint64_t fpcr; - int i; - - __get_user(env->pc, &sc->sc_pc); - - for (i = 0; i < 31; ++i) { - __get_user(env->ir[i], &sc->sc_regs[i]); - } - for (i = 0; i < 31; ++i) { - __get_user(env->fir[i], &sc->sc_fpregs[i]); - } - - __get_user(fpcr, &sc->sc_fpcr); - cpu_alpha_store_fpcr(env, fpcr); -} - -static inline abi_ulong get_sigframe(struct target_sigaction *sa, - CPUAlphaState *env, - unsigned long framesize) -{ - abi_ulong sp = env->ir[IR_SP]; - - /* This is the X/Open sanctioned signal stack switching. */ - if ((sa->sa_flags & TARGET_SA_ONSTACK) != 0 && !sas_ss_flags(sp)) { - sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; - } - return (sp - framesize) & -32; -} - -static void setup_frame(int sig, struct target_sigaction *ka, - target_sigset_t *set, CPUAlphaState *env) -{ - abi_ulong frame_addr, r26; - struct target_sigframe *frame; - int err = 0; - - frame_addr = get_sigframe(ka, env, sizeof(*frame)); - trace_user_setup_frame(env, frame_addr); - if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) { - goto give_sigsegv; - } - - setup_sigcontext(&frame->sc, env, frame_addr, set); - - if (ka->sa_restorer) { - r26 = ka->sa_restorer; - } else { - __put_user(INSN_MOV_R30_R16, &frame->retcode[0]); - __put_user(INSN_LDI_R0 + TARGET_NR_sigreturn, - &frame->retcode[1]); - __put_user(INSN_CALLSYS, &frame->retcode[2]); - /* imb() */ - r26 = frame_addr + offsetof(struct target_sigframe, retcode); - } - - unlock_user_struct(frame, frame_addr, 1); - - if (err) { -give_sigsegv: - force_sigsegv(sig); - return; - } - - env->ir[IR_RA] = r26; - env->ir[IR_PV] = env->pc = ka->_sa_handler; - env->ir[IR_A0] = sig; - env->ir[IR_A1] = 0; - env->ir[IR_A2] = frame_addr + offsetof(struct target_sigframe, sc); - env->ir[IR_SP] = frame_addr; -} - -static void setup_rt_frame(int sig, struct target_sigaction *ka, - target_siginfo_t *info, - target_sigset_t *set, CPUAlphaState *env) -{ - abi_ulong frame_addr, r26; - struct target_rt_sigframe *frame; - int i, err = 0; - - frame_addr = get_sigframe(ka, env, sizeof(*frame)); - trace_user_setup_rt_frame(env, frame_addr); - if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) { - goto give_sigsegv; - } - - tswap_siginfo(&frame->info, info); - - __put_user(0, &frame->uc.tuc_flags); - __put_user(0, &frame->uc.tuc_link); - __put_user(set->sig[0], &frame->uc.tuc_osf_sigmask); - __put_user(target_sigaltstack_used.ss_sp, - &frame->uc.tuc_stack.ss_sp); - __put_user(sas_ss_flags(env->ir[IR_SP]), - &frame->uc.tuc_stack.ss_flags); - __put_user(target_sigaltstack_used.ss_size, - &frame->uc.tuc_stack.ss_size); - setup_sigcontext(&frame->uc.tuc_mcontext, env, frame_addr, set); - for (i = 0; i < TARGET_NSIG_WORDS; ++i) { - __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]); - } - - if (ka->sa_restorer) { - r26 = ka->sa_restorer; - } else { - __put_user(INSN_MOV_R30_R16, &frame->retcode[0]); - __put_user(INSN_LDI_R0 + TARGET_NR_rt_sigreturn, - &frame->retcode[1]); - __put_user(INSN_CALLSYS, &frame->retcode[2]); - /* imb(); */ - r26 = frame_addr + offsetof(struct target_sigframe, retcode); - } - - if (err) { -give_sigsegv: - force_sigsegv(sig); - return; - } - - env->ir[IR_RA] = r26; - env->ir[IR_PV] = env->pc = ka->_sa_handler; - env->ir[IR_A0] = sig; - env->ir[IR_A1] = frame_addr + offsetof(struct target_rt_sigframe, info); - env->ir[IR_A2] = frame_addr + offsetof(struct target_rt_sigframe, uc); - env->ir[IR_SP] = frame_addr; -} - -long do_sigreturn(CPUAlphaState *env) -{ - struct target_sigcontext *sc; - abi_ulong sc_addr = env->ir[IR_A0]; - target_sigset_t target_set; - sigset_t set; - - if (!lock_user_struct(VERIFY_READ, sc, sc_addr, 1)) { - goto badframe; - } - - target_sigemptyset(&target_set); - __get_user(target_set.sig[0], &sc->sc_mask); - - target_to_host_sigset_internal(&set, &target_set); - set_sigmask(&set); - - restore_sigcontext(env, sc); - unlock_user_struct(sc, sc_addr, 0); - return -TARGET_QEMU_ESIGRETURN; - -badframe: - force_sig(TARGET_SIGSEGV); - return -TARGET_QEMU_ESIGRETURN; -} - -long do_rt_sigreturn(CPUAlphaState *env) -{ - abi_ulong frame_addr = env->ir[IR_A0]; - struct target_rt_sigframe *frame; - sigset_t set; - - trace_user_do_rt_sigreturn(env, frame_addr); - if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) { - goto badframe; - } - target_to_host_sigset(&set, &frame->uc.tuc_sigmask); - set_sigmask(&set); - - restore_sigcontext(env, &frame->uc.tuc_mcontext); - if (do_sigaltstack(frame_addr + offsetof(struct target_rt_sigframe, - uc.tuc_stack), - 0, env->ir[IR_SP]) == -EFAULT) { - goto badframe; - } - - unlock_user_struct(frame, frame_addr, 0); - return -TARGET_QEMU_ESIGRETURN; - - -badframe: - unlock_user_struct(frame, frame_addr, 0); - force_sig(TARGET_SIGSEGV); - return -TARGET_QEMU_ESIGRETURN; -} - #elif defined(TARGET_TILEGX) struct target_sigcontext { |