diff options
Diffstat (limited to 'linux-user/mips/cpu_loop.c')
-rw-r--r-- | linux-user/mips/cpu_loop.c | 722 |
1 files changed, 138 insertions, 584 deletions
diff --git a/linux-user/mips/cpu_loop.c b/linux-user/mips/cpu_loop.c index c9c20cf8b7..462387a073 100644 --- a/linux-user/mips/cpu_loop.c +++ b/linux-user/mips/cpu_loop.c @@ -19,479 +19,52 @@ #include "qemu/osdep.h" #include "qemu.h" +#include "user-internals.h" #include "cpu_loop-common.h" +#include "signal-common.h" #include "elf.h" +#include "internal.h" +#include "fpu_helper.h" # ifdef TARGET_ABI_MIPSO32 -# define MIPS_SYS(name, args) args, -static const uint8_t mips_syscall_args[] = { - MIPS_SYS(sys_syscall , 8) /* 4000 */ - MIPS_SYS(sys_exit , 1) - MIPS_SYS(sys_fork , 0) - MIPS_SYS(sys_read , 3) - MIPS_SYS(sys_write , 3) - MIPS_SYS(sys_open , 3) /* 4005 */ - MIPS_SYS(sys_close , 1) - MIPS_SYS(sys_waitpid , 3) - MIPS_SYS(sys_creat , 2) - MIPS_SYS(sys_link , 2) - MIPS_SYS(sys_unlink , 1) /* 4010 */ - MIPS_SYS(sys_execve , 0) - MIPS_SYS(sys_chdir , 1) - MIPS_SYS(sys_time , 1) - MIPS_SYS(sys_mknod , 3) - MIPS_SYS(sys_chmod , 2) /* 4015 */ - MIPS_SYS(sys_lchown , 3) - MIPS_SYS(sys_ni_syscall , 0) - MIPS_SYS(sys_ni_syscall , 0) /* was sys_stat */ - MIPS_SYS(sys_lseek , 3) - MIPS_SYS(sys_getpid , 0) /* 4020 */ - MIPS_SYS(sys_mount , 5) - MIPS_SYS(sys_umount , 1) - MIPS_SYS(sys_setuid , 1) - MIPS_SYS(sys_getuid , 0) - MIPS_SYS(sys_stime , 1) /* 4025 */ - MIPS_SYS(sys_ptrace , 4) - MIPS_SYS(sys_alarm , 1) - MIPS_SYS(sys_ni_syscall , 0) /* was sys_fstat */ - MIPS_SYS(sys_pause , 0) - MIPS_SYS(sys_utime , 2) /* 4030 */ - MIPS_SYS(sys_ni_syscall , 0) - MIPS_SYS(sys_ni_syscall , 0) - MIPS_SYS(sys_access , 2) - MIPS_SYS(sys_nice , 1) - MIPS_SYS(sys_ni_syscall , 0) /* 4035 */ - MIPS_SYS(sys_sync , 0) - MIPS_SYS(sys_kill , 2) - MIPS_SYS(sys_rename , 2) - MIPS_SYS(sys_mkdir , 2) - MIPS_SYS(sys_rmdir , 1) /* 4040 */ - MIPS_SYS(sys_dup , 1) - MIPS_SYS(sys_pipe , 0) - MIPS_SYS(sys_times , 1) - MIPS_SYS(sys_ni_syscall , 0) - MIPS_SYS(sys_brk , 1) /* 4045 */ - MIPS_SYS(sys_setgid , 1) - MIPS_SYS(sys_getgid , 0) - MIPS_SYS(sys_ni_syscall , 0) /* was signal(2) */ - MIPS_SYS(sys_geteuid , 0) - MIPS_SYS(sys_getegid , 0) /* 4050 */ - MIPS_SYS(sys_acct , 0) - MIPS_SYS(sys_umount2 , 2) - MIPS_SYS(sys_ni_syscall , 0) - MIPS_SYS(sys_ioctl , 3) - MIPS_SYS(sys_fcntl , 3) /* 4055 */ - MIPS_SYS(sys_ni_syscall , 2) - MIPS_SYS(sys_setpgid , 2) - MIPS_SYS(sys_ni_syscall , 0) - MIPS_SYS(sys_olduname , 1) - MIPS_SYS(sys_umask , 1) /* 4060 */ - MIPS_SYS(sys_chroot , 1) - MIPS_SYS(sys_ustat , 2) - MIPS_SYS(sys_dup2 , 2) - MIPS_SYS(sys_getppid , 0) - MIPS_SYS(sys_getpgrp , 0) /* 4065 */ - MIPS_SYS(sys_setsid , 0) - MIPS_SYS(sys_sigaction , 3) - MIPS_SYS(sys_sgetmask , 0) - MIPS_SYS(sys_ssetmask , 1) - MIPS_SYS(sys_setreuid , 2) /* 4070 */ - MIPS_SYS(sys_setregid , 2) - MIPS_SYS(sys_sigsuspend , 0) - MIPS_SYS(sys_sigpending , 1) - MIPS_SYS(sys_sethostname , 2) - MIPS_SYS(sys_setrlimit , 2) /* 4075 */ - MIPS_SYS(sys_getrlimit , 2) - MIPS_SYS(sys_getrusage , 2) - MIPS_SYS(sys_gettimeofday, 2) - MIPS_SYS(sys_settimeofday, 2) - MIPS_SYS(sys_getgroups , 2) /* 4080 */ - MIPS_SYS(sys_setgroups , 2) - MIPS_SYS(sys_ni_syscall , 0) /* old_select */ - MIPS_SYS(sys_symlink , 2) - MIPS_SYS(sys_ni_syscall , 0) /* was sys_lstat */ - MIPS_SYS(sys_readlink , 3) /* 4085 */ - MIPS_SYS(sys_uselib , 1) - MIPS_SYS(sys_swapon , 2) - MIPS_SYS(sys_reboot , 3) - MIPS_SYS(old_readdir , 3) - MIPS_SYS(old_mmap , 6) /* 4090 */ - MIPS_SYS(sys_munmap , 2) - MIPS_SYS(sys_truncate , 2) - MIPS_SYS(sys_ftruncate , 2) - MIPS_SYS(sys_fchmod , 2) - MIPS_SYS(sys_fchown , 3) /* 4095 */ - MIPS_SYS(sys_getpriority , 2) - MIPS_SYS(sys_setpriority , 3) - MIPS_SYS(sys_ni_syscall , 0) - MIPS_SYS(sys_statfs , 2) - MIPS_SYS(sys_fstatfs , 2) /* 4100 */ - MIPS_SYS(sys_ni_syscall , 0) /* was ioperm(2) */ - MIPS_SYS(sys_socketcall , 2) - MIPS_SYS(sys_syslog , 3) - MIPS_SYS(sys_setitimer , 3) - MIPS_SYS(sys_getitimer , 2) /* 4105 */ - MIPS_SYS(sys_newstat , 2) - MIPS_SYS(sys_newlstat , 2) - MIPS_SYS(sys_newfstat , 2) - MIPS_SYS(sys_uname , 1) - MIPS_SYS(sys_ni_syscall , 0) /* 4110 was iopl(2) */ - MIPS_SYS(sys_vhangup , 0) - MIPS_SYS(sys_ni_syscall , 0) /* was sys_idle() */ - MIPS_SYS(sys_ni_syscall , 0) /* was sys_vm86 */ - MIPS_SYS(sys_wait4 , 4) - MIPS_SYS(sys_swapoff , 1) /* 4115 */ - MIPS_SYS(sys_sysinfo , 1) - MIPS_SYS(sys_ipc , 6) - MIPS_SYS(sys_fsync , 1) - MIPS_SYS(sys_sigreturn , 0) - MIPS_SYS(sys_clone , 6) /* 4120 */ - MIPS_SYS(sys_setdomainname, 2) - MIPS_SYS(sys_newuname , 1) - MIPS_SYS(sys_ni_syscall , 0) /* sys_modify_ldt */ - MIPS_SYS(sys_adjtimex , 1) - MIPS_SYS(sys_mprotect , 3) /* 4125 */ - MIPS_SYS(sys_sigprocmask , 3) - MIPS_SYS(sys_ni_syscall , 0) /* was create_module */ - MIPS_SYS(sys_init_module , 5) - MIPS_SYS(sys_delete_module, 1) - MIPS_SYS(sys_ni_syscall , 0) /* 4130 was get_kernel_syms */ - MIPS_SYS(sys_quotactl , 0) - MIPS_SYS(sys_getpgid , 1) - MIPS_SYS(sys_fchdir , 1) - MIPS_SYS(sys_bdflush , 2) - MIPS_SYS(sys_sysfs , 3) /* 4135 */ - MIPS_SYS(sys_personality , 1) - MIPS_SYS(sys_ni_syscall , 0) /* for afs_syscall */ - MIPS_SYS(sys_setfsuid , 1) - MIPS_SYS(sys_setfsgid , 1) - MIPS_SYS(sys_llseek , 5) /* 4140 */ - MIPS_SYS(sys_getdents , 3) - MIPS_SYS(sys_select , 5) - MIPS_SYS(sys_flock , 2) - MIPS_SYS(sys_msync , 3) - MIPS_SYS(sys_readv , 3) /* 4145 */ - MIPS_SYS(sys_writev , 3) - MIPS_SYS(sys_cacheflush , 3) - MIPS_SYS(sys_cachectl , 3) - MIPS_SYS(sys_sysmips , 4) - MIPS_SYS(sys_ni_syscall , 0) /* 4150 */ - MIPS_SYS(sys_getsid , 1) - MIPS_SYS(sys_fdatasync , 0) - MIPS_SYS(sys_sysctl , 1) - MIPS_SYS(sys_mlock , 2) - MIPS_SYS(sys_munlock , 2) /* 4155 */ - MIPS_SYS(sys_mlockall , 1) - MIPS_SYS(sys_munlockall , 0) - MIPS_SYS(sys_sched_setparam, 2) - MIPS_SYS(sys_sched_getparam, 2) - MIPS_SYS(sys_sched_setscheduler, 3) /* 4160 */ - MIPS_SYS(sys_sched_getscheduler, 1) - MIPS_SYS(sys_sched_yield , 0) - MIPS_SYS(sys_sched_get_priority_max, 1) - MIPS_SYS(sys_sched_get_priority_min, 1) - MIPS_SYS(sys_sched_rr_get_interval, 2) /* 4165 */ - MIPS_SYS(sys_nanosleep, 2) - MIPS_SYS(sys_mremap , 5) - MIPS_SYS(sys_accept , 3) - MIPS_SYS(sys_bind , 3) - MIPS_SYS(sys_connect , 3) /* 4170 */ - MIPS_SYS(sys_getpeername , 3) - MIPS_SYS(sys_getsockname , 3) - MIPS_SYS(sys_getsockopt , 5) - MIPS_SYS(sys_listen , 2) - MIPS_SYS(sys_recv , 4) /* 4175 */ - MIPS_SYS(sys_recvfrom , 6) - MIPS_SYS(sys_recvmsg , 3) - MIPS_SYS(sys_send , 4) - MIPS_SYS(sys_sendmsg , 3) - MIPS_SYS(sys_sendto , 6) /* 4180 */ - MIPS_SYS(sys_setsockopt , 5) - MIPS_SYS(sys_shutdown , 2) - MIPS_SYS(sys_socket , 3) - MIPS_SYS(sys_socketpair , 4) - MIPS_SYS(sys_setresuid , 3) /* 4185 */ - MIPS_SYS(sys_getresuid , 3) - MIPS_SYS(sys_ni_syscall , 0) /* was sys_query_module */ - MIPS_SYS(sys_poll , 3) - MIPS_SYS(sys_nfsservctl , 3) - MIPS_SYS(sys_setresgid , 3) /* 4190 */ - MIPS_SYS(sys_getresgid , 3) - MIPS_SYS(sys_prctl , 5) - MIPS_SYS(sys_rt_sigreturn, 0) - MIPS_SYS(sys_rt_sigaction, 4) - MIPS_SYS(sys_rt_sigprocmask, 4) /* 4195 */ - MIPS_SYS(sys_rt_sigpending, 2) - MIPS_SYS(sys_rt_sigtimedwait, 4) - MIPS_SYS(sys_rt_sigqueueinfo, 3) - MIPS_SYS(sys_rt_sigsuspend, 0) - MIPS_SYS(sys_pread64 , 6) /* 4200 */ - MIPS_SYS(sys_pwrite64 , 6) - MIPS_SYS(sys_chown , 3) - MIPS_SYS(sys_getcwd , 2) - MIPS_SYS(sys_capget , 2) - MIPS_SYS(sys_capset , 2) /* 4205 */ - MIPS_SYS(sys_sigaltstack , 2) - MIPS_SYS(sys_sendfile , 4) - MIPS_SYS(sys_ni_syscall , 0) - MIPS_SYS(sys_ni_syscall , 0) - MIPS_SYS(sys_mmap2 , 6) /* 4210 */ - MIPS_SYS(sys_truncate64 , 4) - MIPS_SYS(sys_ftruncate64 , 4) - MIPS_SYS(sys_stat64 , 2) - MIPS_SYS(sys_lstat64 , 2) - MIPS_SYS(sys_fstat64 , 2) /* 4215 */ - MIPS_SYS(sys_pivot_root , 2) - MIPS_SYS(sys_mincore , 3) - MIPS_SYS(sys_madvise , 3) - MIPS_SYS(sys_getdents64 , 3) - MIPS_SYS(sys_fcntl64 , 3) /* 4220 */ - MIPS_SYS(sys_ni_syscall , 0) - MIPS_SYS(sys_gettid , 0) - MIPS_SYS(sys_readahead , 5) - MIPS_SYS(sys_setxattr , 5) - MIPS_SYS(sys_lsetxattr , 5) /* 4225 */ - MIPS_SYS(sys_fsetxattr , 5) - MIPS_SYS(sys_getxattr , 4) - MIPS_SYS(sys_lgetxattr , 4) - MIPS_SYS(sys_fgetxattr , 4) - MIPS_SYS(sys_listxattr , 3) /* 4230 */ - MIPS_SYS(sys_llistxattr , 3) - MIPS_SYS(sys_flistxattr , 3) - MIPS_SYS(sys_removexattr , 2) - MIPS_SYS(sys_lremovexattr, 2) - MIPS_SYS(sys_fremovexattr, 2) /* 4235 */ - MIPS_SYS(sys_tkill , 2) - MIPS_SYS(sys_sendfile64 , 5) - MIPS_SYS(sys_futex , 6) - MIPS_SYS(sys_sched_setaffinity, 3) - MIPS_SYS(sys_sched_getaffinity, 3) /* 4240 */ - MIPS_SYS(sys_io_setup , 2) - MIPS_SYS(sys_io_destroy , 1) - MIPS_SYS(sys_io_getevents, 5) - MIPS_SYS(sys_io_submit , 3) - MIPS_SYS(sys_io_cancel , 3) /* 4245 */ - MIPS_SYS(sys_exit_group , 1) - MIPS_SYS(sys_lookup_dcookie, 3) - MIPS_SYS(sys_epoll_create, 1) - MIPS_SYS(sys_epoll_ctl , 4) - MIPS_SYS(sys_epoll_wait , 3) /* 4250 */ - MIPS_SYS(sys_remap_file_pages, 5) - MIPS_SYS(sys_set_tid_address, 1) - MIPS_SYS(sys_restart_syscall, 0) - MIPS_SYS(sys_fadvise64_64, 7) - MIPS_SYS(sys_statfs64 , 3) /* 4255 */ - MIPS_SYS(sys_fstatfs64 , 2) - MIPS_SYS(sys_timer_create, 3) - MIPS_SYS(sys_timer_settime, 4) - MIPS_SYS(sys_timer_gettime, 2) - MIPS_SYS(sys_timer_getoverrun, 1) /* 4260 */ - MIPS_SYS(sys_timer_delete, 1) - MIPS_SYS(sys_clock_settime, 2) - MIPS_SYS(sys_clock_gettime, 2) - MIPS_SYS(sys_clock_getres, 2) - MIPS_SYS(sys_clock_nanosleep, 4) /* 4265 */ - MIPS_SYS(sys_tgkill , 3) - MIPS_SYS(sys_utimes , 2) - MIPS_SYS(sys_mbind , 4) - MIPS_SYS(sys_ni_syscall , 0) /* sys_get_mempolicy */ - MIPS_SYS(sys_ni_syscall , 0) /* 4270 sys_set_mempolicy */ - MIPS_SYS(sys_mq_open , 4) - MIPS_SYS(sys_mq_unlink , 1) - MIPS_SYS(sys_mq_timedsend, 5) - MIPS_SYS(sys_mq_timedreceive, 5) - MIPS_SYS(sys_mq_notify , 2) /* 4275 */ - MIPS_SYS(sys_mq_getsetattr, 3) - MIPS_SYS(sys_ni_syscall , 0) /* sys_vserver */ - MIPS_SYS(sys_waitid , 4) - MIPS_SYS(sys_ni_syscall , 0) /* available, was setaltroot */ - MIPS_SYS(sys_add_key , 5) - MIPS_SYS(sys_request_key, 4) - MIPS_SYS(sys_keyctl , 5) - MIPS_SYS(sys_set_thread_area, 1) - MIPS_SYS(sys_inotify_init, 0) - MIPS_SYS(sys_inotify_add_watch, 3) /* 4285 */ - MIPS_SYS(sys_inotify_rm_watch, 2) - MIPS_SYS(sys_migrate_pages, 4) - MIPS_SYS(sys_openat, 4) - MIPS_SYS(sys_mkdirat, 3) - MIPS_SYS(sys_mknodat, 4) /* 4290 */ - MIPS_SYS(sys_fchownat, 5) - MIPS_SYS(sys_futimesat, 3) - MIPS_SYS(sys_fstatat64, 4) - MIPS_SYS(sys_unlinkat, 3) - MIPS_SYS(sys_renameat, 4) /* 4295 */ - MIPS_SYS(sys_linkat, 5) - MIPS_SYS(sys_symlinkat, 3) - MIPS_SYS(sys_readlinkat, 4) - MIPS_SYS(sys_fchmodat, 3) - MIPS_SYS(sys_faccessat, 3) /* 4300 */ - MIPS_SYS(sys_pselect6, 6) - MIPS_SYS(sys_ppoll, 5) - MIPS_SYS(sys_unshare, 1) - MIPS_SYS(sys_splice, 6) - MIPS_SYS(sys_sync_file_range, 7) /* 4305 */ - MIPS_SYS(sys_tee, 4) - MIPS_SYS(sys_vmsplice, 4) - MIPS_SYS(sys_move_pages, 6) - MIPS_SYS(sys_set_robust_list, 2) - MIPS_SYS(sys_get_robust_list, 3) /* 4310 */ - MIPS_SYS(sys_kexec_load, 4) - MIPS_SYS(sys_getcpu, 3) - MIPS_SYS(sys_epoll_pwait, 6) - MIPS_SYS(sys_ioprio_set, 3) - MIPS_SYS(sys_ioprio_get, 2) - MIPS_SYS(sys_utimensat, 4) - MIPS_SYS(sys_signalfd, 3) - MIPS_SYS(sys_ni_syscall, 0) /* was timerfd */ - MIPS_SYS(sys_eventfd, 1) - MIPS_SYS(sys_fallocate, 6) /* 4320 */ - MIPS_SYS(sys_timerfd_create, 2) - MIPS_SYS(sys_timerfd_gettime, 2) - MIPS_SYS(sys_timerfd_settime, 4) - MIPS_SYS(sys_signalfd4, 4) - MIPS_SYS(sys_eventfd2, 2) /* 4325 */ - MIPS_SYS(sys_epoll_create1, 1) - MIPS_SYS(sys_dup3, 3) - MIPS_SYS(sys_pipe2, 2) - MIPS_SYS(sys_inotify_init1, 1) - MIPS_SYS(sys_preadv, 5) /* 4330 */ - MIPS_SYS(sys_pwritev, 5) - MIPS_SYS(sys_rt_tgsigqueueinfo, 4) - MIPS_SYS(sys_perf_event_open, 5) - MIPS_SYS(sys_accept4, 4) - MIPS_SYS(sys_recvmmsg, 5) /* 4335 */ - MIPS_SYS(sys_fanotify_init, 2) - MIPS_SYS(sys_fanotify_mark, 6) - MIPS_SYS(sys_prlimit64, 4) - MIPS_SYS(sys_name_to_handle_at, 5) - MIPS_SYS(sys_open_by_handle_at, 3) /* 4340 */ - MIPS_SYS(sys_clock_adjtime, 2) - MIPS_SYS(sys_syncfs, 1) - MIPS_SYS(sys_sendmmsg, 4) - MIPS_SYS(sys_setns, 2) - MIPS_SYS(sys_process_vm_readv, 6) /* 345 */ - MIPS_SYS(sys_process_vm_writev, 6) - MIPS_SYS(sys_kcmp, 5) - MIPS_SYS(sys_finit_module, 3) - MIPS_SYS(sys_sched_setattr, 2) - MIPS_SYS(sys_sched_getattr, 3) /* 350 */ - MIPS_SYS(sys_renameat2, 5) - MIPS_SYS(sys_seccomp, 3) - MIPS_SYS(sys_getrandom, 3) - MIPS_SYS(sys_memfd_create, 2) - MIPS_SYS(sys_bpf, 3) /* 355 */ - MIPS_SYS(sys_execveat, 5) - MIPS_SYS(sys_userfaultfd, 1) - MIPS_SYS(sys_membarrier, 2) - MIPS_SYS(sys_mlock2, 3) - MIPS_SYS(sys_copy_file_range, 6) /* 360 */ - MIPS_SYS(sys_preadv2, 6) - MIPS_SYS(sys_pwritev2, 6) +# define MIPS_SYSCALL_NUMBER_UNUSED -1 +static const int8_t mips_syscall_args[] = { +#include "syscall-args-o32.c.inc" }; -# undef MIPS_SYS # endif /* O32 */ -static int do_store_exclusive(CPUMIPSState *env) -{ - target_ulong addr; - target_ulong page_addr; - target_ulong val; - uint32_t val_wp = 0; - uint32_t llnewval_wp = 0; - int flags; - int segv = 0; - int reg; - int d; - int wp; - - addr = env->lladdr; - page_addr = addr & TARGET_PAGE_MASK; - start_exclusive(); - mmap_lock(); - flags = page_get_flags(page_addr); - if ((flags & PAGE_READ) == 0) { - segv = 1; - } else { - reg = env->llreg & 0x1f; - d = (env->llreg & 0x20) != 0; - wp = (env->llreg & 0x40) != 0; - if (!wp) { - if (d) { - segv = get_user_s64(val, addr); - } else { - segv = get_user_s32(val, addr); - } - } else { - segv = get_user_s32(val, addr); - segv |= get_user_s32(val_wp, addr); - llnewval_wp = env->llnewval_wp; - } - if (!segv) { - if (val != env->llval && val_wp == llnewval_wp) { - env->active_tc.gpr[reg] = 0; - } else { - if (!wp) { - if (d) { - segv = put_user_u64(env->llnewval, addr); - } else { - segv = put_user_u32(env->llnewval, addr); - } - } else { - segv = put_user_u32(env->llnewval, addr); - segv |= put_user_u32(env->llnewval_wp, addr + 4); - } - if (!segv) { - env->active_tc.gpr[reg] = 1; - } - } - } - } - env->lladdr = -1; - if (!segv) { - env->active_tc.PC += 4; - } - mmap_unlock(); - end_exclusive(); - return segv; -} - /* Break codes */ enum { BRK_OVERFLOW = 6, BRK_DIVZERO = 7 }; -static int do_break(CPUMIPSState *env, target_siginfo_t *info, - unsigned int code) +static void do_tr_or_bp(CPUMIPSState *env, unsigned int code, bool trap) { - int ret = -1; + target_ulong pc = env->active_tc.PC; switch (code) { case BRK_OVERFLOW: + force_sig_fault(TARGET_SIGFPE, TARGET_FPE_INTOVF, pc); + break; case BRK_DIVZERO: - info->si_signo = TARGET_SIGFPE; - info->si_errno = 0; - info->si_code = (code == BRK_OVERFLOW) ? FPE_INTOVF : FPE_INTDIV; - queue_signal(env, info->si_signo, QEMU_SI_FAULT, &*info); - ret = 0; + force_sig_fault(TARGET_SIGFPE, TARGET_FPE_INTDIV, pc); break; default: - info->si_signo = TARGET_SIGTRAP; - info->si_errno = 0; - queue_signal(env, info->si_signo, QEMU_SI_FAULT, &*info); - ret = 0; + if (trap) { + force_sig(TARGET_SIGTRAP); + } else { + force_sig_fault(TARGET_SIGTRAP, TARGET_TRAP_BRKPT, pc); + } break; } - - return ret; } void cpu_loop(CPUMIPSState *env) { - CPUState *cs = CPU(mips_env_get_cpu(env)); - target_siginfo_t info; - int trapnr; + CPUState *cs = env_cpu(env); + int trapnr, si_code; + unsigned int code; abi_long ret; # ifdef TARGET_ABI_MIPSO32 unsigned int syscall_num; @@ -509,8 +82,14 @@ void cpu_loop(CPUMIPSState *env) # ifdef TARGET_ABI_MIPSO32 syscall_num = env->active_tc.gpr[2] - 4000; if (syscall_num >= sizeof(mips_syscall_args)) { + /* syscall_num is larger that any defined for MIPS O32 */ + ret = -TARGET_ENOSYS; + } else if (mips_syscall_args[syscall_num] == + MIPS_SYSCALL_NUMBER_UNUSED) { + /* syscall_num belongs to the range not defined for MIPS O32 */ ret = -TARGET_ENOSYS; } else { + /* syscall_num is valid */ int nb_args; abi_ulong sp_reg; abi_ulong arg5 = 0, arg6 = 0, arg7 = 0, arg8 = 0; @@ -523,18 +102,22 @@ void cpu_loop(CPUMIPSState *env) if ((ret = get_user_ual(arg8, sp_reg + 28)) != 0) { goto done_syscall; } + /* fall through */ case 7: if ((ret = get_user_ual(arg7, sp_reg + 24)) != 0) { goto done_syscall; } + /* fall through */ case 6: if ((ret = get_user_ual(arg6, sp_reg + 20)) != 0) { goto done_syscall; } + /* fall through */ case 5: if ((ret = get_user_ual(arg5, sp_reg + 16)) != 0) { goto done_syscall; } + /* fall through */ default: break; } @@ -553,11 +136,11 @@ done_syscall: env->active_tc.gpr[8], env->active_tc.gpr[9], env->active_tc.gpr[10], env->active_tc.gpr[11]); # endif /* O32 */ - if (ret == -TARGET_ERESTARTSYS) { + if (ret == -QEMU_ERESTARTSYS) { env->active_tc.PC -= 4; break; } - if (ret == -TARGET_QEMU_ESIGRETURN) { + if (ret == -QEMU_ESIGRETURN) { /* Returning from a successful sigreturn syscall. Avoid clobbering register state. */ break; @@ -570,162 +153,57 @@ done_syscall: } env->active_tc.gpr[2] = ret; break; - case EXCP_TLBL: - case EXCP_TLBS: - case EXCP_AdEL: - case EXCP_AdES: - info.si_signo = TARGET_SIGSEGV; - info.si_errno = 0; - /* XXX: check env->error_code */ - info.si_code = TARGET_SEGV_MAPERR; - info._sifields._sigfault._addr = env->CP0_BadVAddr; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - break; case EXCP_CpU: case EXCP_RI: - info.si_signo = TARGET_SIGILL; - info.si_errno = 0; - info.si_code = 0; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + case EXCP_DSPDIS: + force_sig(TARGET_SIGILL); break; case EXCP_INTERRUPT: /* just indicate that signals should be handled asap */ break; case EXCP_DEBUG: - { - int sig; - - sig = gdb_handlesig(cs, TARGET_SIGTRAP); - if (sig) - { - info.si_signo = sig; - info.si_errno = 0; - info.si_code = TARGET_TRAP_BRKPT; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - } - } + force_sig_fault(TARGET_SIGTRAP, TARGET_TRAP_BRKPT, + env->active_tc.PC); break; - case EXCP_SC: - if (do_store_exclusive(env)) { - info.si_signo = TARGET_SIGSEGV; - info.si_errno = 0; - info.si_code = TARGET_SEGV_MAPERR; - info._sifields._sigfault._addr = env->active_tc.PC; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + case EXCP_FPE: + si_code = TARGET_FPE_FLTUNK; + if (GET_FP_CAUSE(env->active_fpu.fcr31) & FP_INVALID) { + si_code = TARGET_FPE_FLTINV; + } else if (GET_FP_CAUSE(env->active_fpu.fcr31) & FP_DIV0) { + si_code = TARGET_FPE_FLTDIV; + } else if (GET_FP_CAUSE(env->active_fpu.fcr31) & FP_OVERFLOW) { + si_code = TARGET_FPE_FLTOVF; + } else if (GET_FP_CAUSE(env->active_fpu.fcr31) & FP_UNDERFLOW) { + si_code = TARGET_FPE_FLTUND; + } else if (GET_FP_CAUSE(env->active_fpu.fcr31) & FP_INEXACT) { + si_code = TARGET_FPE_FLTRES; } + force_sig_fault(TARGET_SIGFPE, si_code, env->active_tc.PC); break; - case EXCP_DSPDIS: - info.si_signo = TARGET_SIGILL; - info.si_errno = 0; - info.si_code = TARGET_ILL_ILLOPC; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + case EXCP_OVERFLOW: + force_sig_fault(TARGET_SIGFPE, TARGET_FPE_INTOVF, env->active_tc.PC); break; /* The code below was inspired by the MIPS Linux kernel trap * handling code in arch/mips/kernel/traps.c. */ case EXCP_BREAK: - { - abi_ulong trap_instr; - unsigned int code; - - if (env->hflags & MIPS_HFLAG_M16) { - if (env->insn_flags & ASE_MICROMIPS) { - /* microMIPS mode */ - ret = get_user_u16(trap_instr, env->active_tc.PC); - if (ret != 0) { - goto error; - } - - if ((trap_instr >> 10) == 0x11) { - /* 16-bit instruction */ - code = trap_instr & 0xf; - } else { - /* 32-bit instruction */ - abi_ulong instr_lo; - - ret = get_user_u16(instr_lo, - env->active_tc.PC + 2); - if (ret != 0) { - goto error; - } - trap_instr = (trap_instr << 16) | instr_lo; - code = ((trap_instr >> 6) & ((1 << 20) - 1)); - /* Unfortunately, microMIPS also suffers from - the old assembler bug... */ - if (code >= (1 << 10)) { - code >>= 10; - } - } - } else { - /* MIPS16e mode */ - ret = get_user_u16(trap_instr, env->active_tc.PC); - if (ret != 0) { - goto error; - } - code = (trap_instr >> 6) & 0x3f; - } - } else { - ret = get_user_u32(trap_instr, env->active_tc.PC); - if (ret != 0) { - goto error; - } - - /* As described in the original Linux kernel code, the - * below checks on 'code' are to work around an old - * assembly bug. - */ - code = ((trap_instr >> 6) & ((1 << 20) - 1)); - if (code >= (1 << 10)) { - code >>= 10; - } - } - - if (do_break(env, &info, code) != 0) { - goto error; - } + /* + * As described in the original Linux kernel code, the below + * checks on 'code' are to work around an old assembly bug. + */ + code = env->error_code; + if (code >= (1 << 10)) { + code >>= 10; } + do_tr_or_bp(env, code, false); break; case EXCP_TRAP: - { - abi_ulong trap_instr; - unsigned int code = 0; - - if (env->hflags & MIPS_HFLAG_M16) { - /* microMIPS mode */ - abi_ulong instr[2]; - - ret = get_user_u16(instr[0], env->active_tc.PC) || - get_user_u16(instr[1], env->active_tc.PC + 2); - - trap_instr = (instr[0] << 16) | instr[1]; - } else { - ret = get_user_u32(trap_instr, env->active_tc.PC); - } - - if (ret != 0) { - goto error; - } - - /* The immediate versions don't provide a code. */ - if (!(trap_instr & 0xFC000000)) { - if (env->hflags & MIPS_HFLAG_M16) { - /* microMIPS mode */ - code = ((trap_instr >> 12) & ((1 << 4) - 1)); - } else { - code = ((trap_instr >> 6) & ((1 << 10) - 1)); - } - } - - if (do_break(env, &info, code) != 0) { - goto error; - } - } + do_tr_or_bp(env, env->error_code, true); break; case EXCP_ATOMIC: cpu_exec_step_atomic(cs); break; default: -error: EXCP_DUMP(env, "qemu: unhandled CPU exception 0x%x - aborting\n", trapnr); abort(); } @@ -735,11 +213,39 @@ error: void target_cpu_copy_regs(CPUArchState *env, struct target_pt_regs *regs) { - CPUState *cpu = ENV_GET_CPU(env); - TaskState *ts = cpu->opaque; + CPUState *cpu = env_cpu(env); + TaskState *ts = get_task_state(cpu); struct image_info *info = ts->info; int i; + struct mode_req { + bool single; + bool soft; + bool fr1; + bool frdefault; + bool fre; + }; + + static const struct mode_req fpu_reqs[] = { + [MIPS_ABI_FP_ANY] = { true, true, true, true, true }, + [MIPS_ABI_FP_DOUBLE] = { false, false, false, true, true }, + [MIPS_ABI_FP_SINGLE] = { true, false, false, false, false }, + [MIPS_ABI_FP_SOFT] = { false, true, false, false, false }, + [MIPS_ABI_FP_OLD_64] = { false, false, false, false, false }, + [MIPS_ABI_FP_XX] = { false, false, true, true, true }, + [MIPS_ABI_FP_64] = { false, false, true, false, false }, + [MIPS_ABI_FP_64A] = { false, false, true, false, true } + }; + + /* + * Mode requirements when .MIPS.abiflags is not present in the ELF. + * Not present means that everything is acceptable except FR1. + */ + static struct mode_req none_req = { true, true, false, true, true }; + + struct mode_req prog_req; + struct mode_req interp_req; + for(i = 0; i < 32; i++) { env->active_tc.gpr[i] = regs->regs[i]; } @@ -747,6 +253,54 @@ void target_cpu_copy_regs(CPUArchState *env, struct target_pt_regs *regs) if (regs->cp0_epc & 1) { env->hflags |= MIPS_HFLAG_M16; } + +#ifdef TARGET_ABI_MIPSO32 +# define MAX_FP_ABI MIPS_ABI_FP_64A +#else +# define MAX_FP_ABI MIPS_ABI_FP_SOFT +#endif + if ((info->fp_abi > MAX_FP_ABI && info->fp_abi != MIPS_ABI_FP_UNKNOWN) + || (info->interp_fp_abi > MAX_FP_ABI && + info->interp_fp_abi != MIPS_ABI_FP_UNKNOWN)) { + fprintf(stderr, "qemu: Unexpected FPU mode\n"); + exit(1); + } + + prog_req = (info->fp_abi == MIPS_ABI_FP_UNKNOWN) ? none_req + : fpu_reqs[info->fp_abi]; + interp_req = (info->interp_fp_abi == MIPS_ABI_FP_UNKNOWN) ? none_req + : fpu_reqs[info->interp_fp_abi]; + + prog_req.single &= interp_req.single; + prog_req.soft &= interp_req.soft; + prog_req.fr1 &= interp_req.fr1; + prog_req.frdefault &= interp_req.frdefault; + prog_req.fre &= interp_req.fre; + + bool cpu_has_mips_r2_r6 = env->insn_flags & ISA_MIPS_R2 || + env->insn_flags & ISA_MIPS_R6; + + if (prog_req.fre && !prog_req.frdefault && !prog_req.fr1) { + env->CP0_Config5 |= (1 << CP0C5_FRE); + if (env->active_fpu.fcr0 & (1 << FCR0_FREP)) { + env->hflags |= MIPS_HFLAG_FRE; + } + } else if ((prog_req.fr1 && prog_req.frdefault) || + (prog_req.single && !prog_req.frdefault)) { + if ((env->active_fpu.fcr0 & (1 << FCR0_F64) + && cpu_has_mips_r2_r6) || prog_req.fr1) { + env->CP0_Status |= (1 << CP0St_FR); + env->hflags |= MIPS_HFLAG_F64; + } + } else if (prog_req.fr1) { + env->CP0_Status |= (1 << CP0St_FR); + env->hflags |= MIPS_HFLAG_F64; + } else if (!prog_req.fre && !prog_req.frdefault && + !prog_req.fr1 && !prog_req.single && !prog_req.soft) { + fprintf(stderr, "qemu: Can't find a matching FPU mode\n"); + exit(1); + } + if (env->insn_flags & ISA_NANOMIPS32) { return; } |