| /* |
| * qemu user cpu loop |
| * |
| * Copyright (c) 2003-2008 Fabrice Bellard |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * 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-common.h" |
| #include "qemu.h" |
| #include "cpu_loop-common.h" |
| #include "elf.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) |
| }; |
| # undef MIPS_SYS |
| # endif /* O32 */ |
| |
| /* Break codes */ |
| enum { |
| BRK_OVERFLOW = 6, |
| BRK_DIVZERO = 7 |
| }; |
| |
| static int do_break(CPUMIPSState *env, target_siginfo_t *info, |
| unsigned int code) |
| { |
| int ret = -1; |
| |
| switch (code) { |
| case BRK_OVERFLOW: |
| 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; |
| break; |
| default: |
| info->si_signo = TARGET_SIGTRAP; |
| info->si_errno = 0; |
| queue_signal(env, info->si_signo, QEMU_SI_FAULT, &*info); |
| ret = 0; |
| break; |
| } |
| |
| return ret; |
| } |
| |
| void cpu_loop(CPUMIPSState *env) |
| { |
| CPUState *cs = env_cpu(env); |
| target_siginfo_t info; |
| int trapnr; |
| abi_long ret; |
| # ifdef TARGET_ABI_MIPSO32 |
| unsigned int syscall_num; |
| # endif |
| |
| for(;;) { |
| cpu_exec_start(cs); |
| trapnr = cpu_exec(cs); |
| cpu_exec_end(cs); |
| process_queued_cpu_work(cs); |
| |
| switch(trapnr) { |
| case EXCP_SYSCALL: |
| env->active_tc.PC += 4; |
| # ifdef TARGET_ABI_MIPSO32 |
| syscall_num = env->active_tc.gpr[2] - 4000; |
| if (syscall_num >= sizeof(mips_syscall_args)) { |
| ret = -TARGET_ENOSYS; |
| } else { |
| int nb_args; |
| abi_ulong sp_reg; |
| abi_ulong arg5 = 0, arg6 = 0, arg7 = 0, arg8 = 0; |
| |
| nb_args = mips_syscall_args[syscall_num]; |
| sp_reg = env->active_tc.gpr[29]; |
| switch (nb_args) { |
| /* these arguments are taken from the stack */ |
| case 8: |
| if ((ret = get_user_ual(arg8, sp_reg + 28)) != 0) { |
| goto done_syscall; |
| } |
| case 7: |
| if ((ret = get_user_ual(arg7, sp_reg + 24)) != 0) { |
| goto done_syscall; |
| } |
| case 6: |
| if ((ret = get_user_ual(arg6, sp_reg + 20)) != 0) { |
| goto done_syscall; |
| } |
| case 5: |
| if ((ret = get_user_ual(arg5, sp_reg + 16)) != 0) { |
| goto done_syscall; |
| } |
| default: |
| break; |
| } |
| ret = do_syscall(env, env->active_tc.gpr[2], |
| env->active_tc.gpr[4], |
| env->active_tc.gpr[5], |
| env->active_tc.gpr[6], |
| env->active_tc.gpr[7], |
| arg5, arg6, arg7, arg8); |
| } |
| done_syscall: |
| # else |
| ret = do_syscall(env, env->active_tc.gpr[2], |
| env->active_tc.gpr[4], env->active_tc.gpr[5], |
| env->active_tc.gpr[6], env->active_tc.gpr[7], |
| 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) { |
| env->active_tc.PC -= 4; |
| break; |
| } |
| if (ret == -TARGET_QEMU_ESIGRETURN) { |
| /* Returning from a successful sigreturn syscall. |
| Avoid clobbering register state. */ |
| break; |
| } |
| if ((abi_ulong)ret >= (abi_ulong)-1133) { |
| env->active_tc.gpr[7] = 1; /* error flag */ |
| ret = -ret; |
| } else { |
| env->active_tc.gpr[7] = 0; /* error flag */ |
| } |
| 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); |
| break; |
| case EXCP_INTERRUPT: |
| /* just indicate that signals should be handled asap */ |
| break; |
| case EXCP_DEBUG: |
| info.si_signo = TARGET_SIGTRAP; |
| info.si_errno = 0; |
| info.si_code = TARGET_TRAP_BRKPT; |
| queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); |
| 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); |
| break; |
| case EXCP_FPE: |
| info.si_signo = TARGET_SIGFPE; |
| info.si_errno = 0; |
| info.si_code = TARGET_FPE_FLTUNK; |
| if (GET_FP_CAUSE(env->active_fpu.fcr31) & FP_INVALID) { |
| info.si_code = TARGET_FPE_FLTINV; |
| } else if (GET_FP_CAUSE(env->active_fpu.fcr31) & FP_DIV0) { |
| info.si_code = TARGET_FPE_FLTDIV; |
| } else if (GET_FP_CAUSE(env->active_fpu.fcr31) & FP_OVERFLOW) { |
| info.si_code = TARGET_FPE_FLTOVF; |
| } else if (GET_FP_CAUSE(env->active_fpu.fcr31) & FP_UNDERFLOW) { |
| info.si_code = TARGET_FPE_FLTUND; |
| } else if (GET_FP_CAUSE(env->active_fpu.fcr31) & FP_INEXACT) { |
| info.si_code = TARGET_FPE_FLTRES; |
| } |
| queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); |
| 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; |
| } |
| } |
| 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; |
| } |
| } |
| 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(); |
| } |
| process_pending_signals(env); |
| } |
| } |
| |
| void target_cpu_copy_regs(CPUArchState *env, struct target_pt_regs *regs) |
| { |
| CPUState *cpu = env_cpu(env); |
| TaskState *ts = cpu->opaque; |
| 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]; |
| } |
| env->active_tc.PC = regs->cp0_epc & ~(target_ulong)1; |
| 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_MIPS32R2 || |
| env->insn_flags & ISA_MIPS64R2 || |
| env->insn_flags & ISA_MIPS32R6 || |
| env->insn_flags & ISA_MIPS64R6; |
| |
| 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.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; |
| } |
| if (((info->elf_flags & EF_MIPS_NAN2008) != 0) != |
| ((env->active_fpu.fcr31 & (1 << FCR31_NAN2008)) != 0)) { |
| if ((env->active_fpu.fcr31_rw_bitmask & |
| (1 << FCR31_NAN2008)) == 0) { |
| fprintf(stderr, "ELF binary's NaN mode not supported by CPU\n"); |
| exit(1); |
| } |
| if ((info->elf_flags & EF_MIPS_NAN2008) != 0) { |
| env->active_fpu.fcr31 |= (1 << FCR31_NAN2008); |
| } else { |
| env->active_fpu.fcr31 &= ~(1 << FCR31_NAN2008); |
| } |
| restore_snan_bit_mode(env); |
| } |
| } |
