// SPDX-License-Identifier: GPL-2.0+ /******************************************************************************* * QtMips - MIPS 32-bit Architecture Subset Simulator * * Implemented to support following courses: * * B35APO - Computer Architectures * https://cw.fel.cvut.cz/wiki/courses/b35apo * * B4M35PAP - Advanced Computer Architectures * https://cw.fel.cvut.cz/wiki/courses/b4m35pap/start * * Copyright (c) 2017-2019 Karel Koci * Copyright (c) 2019 Pavel Pisa * * Faculty of Electrical Engineering (http://www.fel.cvut.cz) * Czech Technical University (http://www.cvut.cz/) * * 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, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, * Boston, MA 02110-1301, USA. * ******************************************************************************/ #include "utils.h" #include "core.h" #include "ossyscall.h" #include "syscall_nr.h" #include "errno.h" #include "target_errno.h" #include #include #include #include #include using namespace machine; using namespace osemu; // The copyied from musl-libc #define TARGET_O_CREAT 0400 #define TARGET_O_EXCL 02000 #define TARGET_O_NOCTTY 04000 #define TARGET_O_TRUNC 01000 #define TARGET_O_APPEND 0010 #define TARGET_O_NONBLOCK 0200 #define TARGET_O_DSYNC 0020 #define TARGET_O_SYNC 040020 #define TARGET_O_RSYNC 040020 #define TARGET_O_DIRECTORY 0200000 #define TARGET_O_NOFOLLOW 0400000 #define TARGET_O_CLOEXEC 02000000 #define TARGET_O_PATH 010000000 #define TARGET_O_SYNC1 040000 #define TARGET_O_ACCMODE (03|TARGET_O_PATH) #define TARGET_O_RDONLY 00 #define TARGET_O_WRONLY 01 #define TARGET_O_RDWR 02 static const QMap map_target_o_flags_to_o_flags = { #ifdef O_CREAT {TARGET_O_CREAT, O_CREAT}, #endif #ifdef O_EXCL {TARGET_O_EXCL, O_EXCL}, #endif #ifdef O_NOCTTY {TARGET_O_NOCTTY, O_NOCTTY}, #endif #ifdef O_TRUNC {TARGET_O_TRUNC, O_TRUNC}, #endif #ifdef O_APPEND {TARGET_O_APPEND, O_APPEND}, #endif #ifdef O_NONBLOCK {TARGET_O_NONBLOCK, O_NONBLOCK}, #endif #ifdef O_DSYNC {TARGET_O_DSYNC, O_DSYNC}, #endif #ifdef O_SYNC {TARGET_O_SYNC1, O_SYNC}, #endif #ifdef O_RSYNC {TARGET_O_SYNC1, O_RSYNC}, #endif #ifdef O_DIRECTORY {TARGET_O_DIRECTORY, O_DIRECTORY}, #endif #ifdef O_NOFOLLOW {TARGET_O_NOFOLLOW, O_NOFOLLOW}, #endif #ifdef O_CLOEXEC {TARGET_O_CLOEXEC, O_CLOEXEC}, #endif }; #if defined(S_IRUSR) & defined(S_IWUSR) & defined(S_IRGRP) & defined(S_IWGRP) & defined(S_IROTH) & defined(S_IWOTH) #define OPEN_MODE (S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH) #else #define OPEN_MODE 0 #endif // The list copyied from musl-libc static const QMap errno_map = { #ifdef EPERM {EPERM, TARGET_EPERM}, #endif #ifdef ENOENT {ENOENT, TARGET_ENOENT}, #endif #ifdef ESRCH {ESRCH, TARGET_ESRCH}, #endif #ifdef EINTR {EINTR, TARGET_EINTR}, #endif #ifdef EIO {EIO, TARGET_EIO}, #endif #ifdef ENXIO {ENXIO, TARGET_ENXIO}, #endif #ifdef E2BIG {E2BIG, TARGET_E2BIG}, #endif #ifdef ENOEXEC {ENOEXEC, TARGET_ENOEXEC}, #endif #ifdef EBADF {EBADF, TARGET_EBADF}, #endif #ifdef ECHILD {ECHILD, TARGET_ECHILD}, #endif #ifdef EAGAIN {EAGAIN, TARGET_EAGAIN}, #endif #ifdef ENOMEM {ENOMEM, TARGET_ENOMEM}, #endif #ifdef EACCES {EACCES, TARGET_EACCES}, #endif #ifdef EFAULT {EFAULT, TARGET_EFAULT}, #endif #ifdef ENOTBLK {ENOTBLK, TARGET_ENOTBLK}, #endif #ifdef EBUSY {EBUSY, TARGET_EBUSY}, #endif #ifdef EEXIST {EEXIST, TARGET_EEXIST}, #endif #ifdef EXDEV {EXDEV, TARGET_EXDEV}, #endif #ifdef ENODEV {ENODEV, TARGET_ENODEV}, #endif #ifdef ENOTDIR {ENOTDIR, TARGET_ENOTDIR}, #endif #ifdef EISDIR {EISDIR, TARGET_EISDIR}, #endif #ifdef EINVAL {EINVAL, TARGET_EINVAL}, #endif #ifdef ENFILE {ENFILE, TARGET_ENFILE}, #endif #ifdef EMFILE {EMFILE, TARGET_EMFILE}, #endif #ifdef ENOTTY {ENOTTY, TARGET_ENOTTY}, #endif #ifdef ETXTBSY {ETXTBSY, TARGET_ETXTBSY}, #endif #ifdef EFBIG {EFBIG, TARGET_EFBIG}, #endif #ifdef ENOSPC {ENOSPC, TARGET_ENOSPC}, #endif #ifdef ESPIPE {ESPIPE, TARGET_ESPIPE}, #endif #ifdef EROFS {EROFS, TARGET_EROFS}, #endif #ifdef EMLINK {EMLINK, TARGET_EMLINK}, #endif #ifdef EPIPE {EPIPE, TARGET_EPIPE}, #endif #ifdef EDOM {EDOM, TARGET_EDOM}, #endif #ifdef ERANGE {ERANGE, TARGET_ERANGE}, #endif #ifdef ENOMSG {ENOMSG, TARGET_ENOMSG}, #endif #ifdef EIDRM {EIDRM, TARGET_EIDRM}, #endif #ifdef ECHRNG {ECHRNG, TARGET_ECHRNG}, #endif #ifdef EL2NSYNC {EL2NSYNC, TARGET_EL2NSYNC}, #endif #ifdef EL3HLT {EL3HLT, TARGET_EL3HLT}, #endif #ifdef EL3RST {EL3RST, TARGET_EL3RST}, #endif #ifdef ELNRNG {ELNRNG, TARGET_ELNRNG}, #endif #ifdef EUNATCH {EUNATCH, TARGET_EUNATCH}, #endif #ifdef ENOCSI {ENOCSI, TARGET_ENOCSI}, #endif #ifdef EL2HLT {EL2HLT, TARGET_EL2HLT}, #endif #ifdef EDEADLK {EDEADLK, TARGET_EDEADLK}, #endif #ifdef ENOLCK {ENOLCK, TARGET_ENOLCK}, #endif #ifdef EBADE {EBADE, TARGET_EBADE}, #endif #ifdef EBADR {EBADR, TARGET_EBADR}, #endif #ifdef EXFULL {EXFULL, TARGET_EXFULL}, #endif #ifdef ENOANO {ENOANO, TARGET_ENOANO}, #endif #ifdef EBADRQC {EBADRQC, TARGET_EBADRQC}, #endif #ifdef EBADSLT {EBADSLT, TARGET_EBADSLT}, #endif #ifdef EDEADLOCK {EDEADLOCK, TARGET_EDEADLOCK}, #endif #ifdef EBFONT {EBFONT, TARGET_EBFONT}, #endif #ifdef ENOSTR {ENOSTR, TARGET_ENOSTR}, #endif #ifdef ENODATA {ENODATA, TARGET_ENODATA}, #endif #ifdef ETIME {ETIME, TARGET_ETIME}, #endif #ifdef ENOSR {ENOSR, TARGET_ENOSR}, #endif #ifdef ENONET {ENONET, TARGET_ENONET}, #endif #ifdef ENOPKG {ENOPKG, TARGET_ENOPKG}, #endif #ifdef EREMOTE {EREMOTE, TARGET_EREMOTE}, #endif #ifdef ENOLINK {ENOLINK, TARGET_ENOLINK}, #endif #ifdef EADV {EADV, TARGET_EADV}, #endif #ifdef ESRMNT {ESRMNT, TARGET_ESRMNT}, #endif #ifdef ECOMM {ECOMM, TARGET_ECOMM}, #endif #ifdef EPROTO {EPROTO, TARGET_EPROTO}, #endif #ifdef EDOTDOT {EDOTDOT, TARGET_EDOTDOT}, #endif #ifdef EMULTIHOP {EMULTIHOP, TARGET_EMULTIHOP}, #endif #ifdef EBADMSG {EBADMSG, TARGET_EBADMSG}, #endif #ifdef ENAMETOOLONG {ENAMETOOLONG, TARGET_ENAMETOOLONG}, #endif #ifdef EOVERFLOW {EOVERFLOW, TARGET_EOVERFLOW}, #endif #ifdef ENOTUNIQ {ENOTUNIQ, TARGET_ENOTUNIQ}, #endif #ifdef EBADFD {EBADFD, TARGET_EBADFD}, #endif #ifdef EREMCHG {EREMCHG, TARGET_EREMCHG}, #endif #ifdef ELIBACC {ELIBACC, TARGET_ELIBACC}, #endif #ifdef ELIBBAD {ELIBBAD, TARGET_ELIBBAD}, #endif #ifdef ELIBSCN {ELIBSCN, TARGET_ELIBSCN}, #endif #ifdef ELIBMAX {ELIBMAX, TARGET_ELIBMAX}, #endif #ifdef ELIBEXEC {ELIBEXEC, TARGET_ELIBEXEC}, #endif #ifdef EILSEQ {EILSEQ, TARGET_EILSEQ}, #endif #ifdef ENOSYS {ENOSYS, TARGET_ENOSYS}, #endif #ifdef ELOOP {ELOOP, TARGET_ELOOP}, #endif #ifdef ERESTART {ERESTART, TARGET_ERESTART}, #endif #ifdef ESTRPIPE {ESTRPIPE, TARGET_ESTRPIPE}, #endif #ifdef ENOTEMPTY {ENOTEMPTY, TARGET_ENOTEMPTY}, #endif #ifdef EUSERS {EUSERS, TARGET_EUSERS}, #endif #ifdef ENOTSOCK {ENOTSOCK, TARGET_ENOTSOCK}, #endif #ifdef EDESTADDRREQ {EDESTADDRREQ, TARGET_EDESTADDRREQ}, #endif #ifdef EMSGSIZE {EMSGSIZE, TARGET_EMSGSIZE}, #endif #ifdef EPROTOTYPE {EPROTOTYPE, TARGET_EPROTOTYPE}, #endif #ifdef ENOPROTOOPT {ENOPROTOOPT, TARGET_ENOPROTOOPT}, #endif #ifdef EPROTONOSUPPORT {EPROTONOSUPPORT, TARGET_EPROTONOSUPPORT}, #endif #ifdef ESOCKTNOSUPPORT {ESOCKTNOSUPPORT, TARGET_ESOCKTNOSUPPORT}, #endif #ifdef EOPNOTSUPP {EOPNOTSUPP, TARGET_EOPNOTSUPP}, #endif #ifdef ENOTSUP {ENOTSUP, TARGET_ENOTSUP}, #endif #ifdef EPFNOSUPPORT {EPFNOSUPPORT, TARGET_EPFNOSUPPORT}, #endif #ifdef EAFNOSUPPORT {EAFNOSUPPORT, TARGET_EAFNOSUPPORT}, #endif #ifdef EADDRINUSE {EADDRINUSE, TARGET_EADDRINUSE}, #endif #ifdef EADDRNOTAVAIL {EADDRNOTAVAIL, TARGET_EADDRNOTAVAIL}, #endif #ifdef ENETDOWN {ENETDOWN, TARGET_ENETDOWN}, #endif #ifdef ENETUNREACH {ENETUNREACH, TARGET_ENETUNREACH}, #endif #ifdef ENETRESET {ENETRESET, TARGET_ENETRESET}, #endif #ifdef ECONNABORTED {ECONNABORTED, TARGET_ECONNABORTED}, #endif #ifdef ECONNRESET {ECONNRESET, TARGET_ECONNRESET}, #endif #ifdef ENOBUFS {ENOBUFS, TARGET_ENOBUFS}, #endif #ifdef EISCONN {EISCONN, TARGET_EISCONN}, #endif #ifdef ENOTCONN {ENOTCONN, TARGET_ENOTCONN}, #endif #ifdef EUCLEAN {EUCLEAN, TARGET_EUCLEAN}, #endif #ifdef ENOTNAM {ENOTNAM, TARGET_ENOTNAM}, #endif #ifdef ENAVAIL {ENAVAIL, TARGET_ENAVAIL}, #endif #ifdef EISNAM {EISNAM, TARGET_EISNAM}, #endif #ifdef EREMOTEIO {EREMOTEIO, TARGET_EREMOTEIO}, #endif #ifdef ESHUTDOWN {ESHUTDOWN, TARGET_ESHUTDOWN}, #endif #ifdef ETOOMANYREFS {ETOOMANYREFS, TARGET_ETOOMANYREFS}, #endif #ifdef ETIMEDOUT {ETIMEDOUT, TARGET_ETIMEDOUT}, #endif #ifdef ECONNREFUSED {ECONNREFUSED, TARGET_ECONNREFUSED}, #endif #ifdef EHOSTDOWN {EHOSTDOWN, TARGET_EHOSTDOWN}, #endif #ifdef EHOSTUNREACH {EHOSTUNREACH, TARGET_EHOSTUNREACH}, #endif #ifdef EWOULDBLOCK {EWOULDBLOCK, TARGET_EWOULDBLOCK}, #endif #ifdef EALREADY {EALREADY, TARGET_EALREADY}, #endif #ifdef EINPROGRESS {EINPROGRESS, TARGET_EINPROGRESS}, #endif #ifdef ESTALE {ESTALE, TARGET_ESTALE}, #endif #ifdef ECANCELED {ECANCELED, TARGET_ECANCELED}, #endif #ifdef ENOMEDIUM {ENOMEDIUM, TARGET_ENOMEDIUM}, #endif #ifdef EMEDIUMTYPE {EMEDIUMTYPE, TARGET_EMEDIUMTYPE}, #endif #ifdef ENOKEY {ENOKEY, TARGET_ENOKEY}, #endif #ifdef EKEYEXPIRED {EKEYEXPIRED, TARGET_EKEYEXPIRED}, #endif #ifdef EKEYREVOKED {EKEYREVOKED, TARGET_EKEYREVOKED}, #endif #ifdef EKEYREJECTED {EKEYREJECTED, TARGET_EKEYREJECTED}, #endif #ifdef EOWNERDEAD {EOWNERDEAD, TARGET_EOWNERDEAD}, #endif #ifdef ENOTRECOVERABLE {ENOTRECOVERABLE, TARGET_ENOTRECOVERABLE}, #endif #ifdef ERFKILL {ERFKILL, TARGET_ERFKILL}, #endif #ifdef EHWPOISON {EHWPOISON, TARGET_EHWPOISON}, #endif #ifdef EDQUOT {EDQUOT, TARGET_EDQUOT}, #endif }; std::uint32_t result_errno_if_error(std::uint32_t result) { if (result < (std::uint32_t)-4096) return result; result = (std::uint32_t)-errno_map.value(errno); if (!result) result = (std::uint32_t)-1; return result; } int status_from_result(std::uint32_t result) { if (result < (std::uint32_t)-4096) return 0; else return -result; } typedef int (OsSyscallExceptionHandler::*syscall_handler_t) (std::uint32_t &result, Core *core, std::uint32_t syscall_num, std::uint32_t a1, std::uint32_t a2, std::uint32_t a3, std::uint32_t a4, std::uint32_t a5, std::uint32_t a6, std::uint32_t a7, std::uint32_t a8); struct mips_syscall_desc_t { const char *name; unsigned int args; syscall_handler_t handler; }; // The list copyied from QEMU # define MIPS_SYS(name, args, handler) {#name, args, \ &OsSyscallExceptionHandler::handler}, static const mips_syscall_desc_t mips_syscall_args[] = { MIPS_SYS(sys_syscall , 8, syscall_default_handler) /* 4000 */ MIPS_SYS(sys_exit , 1, do_sys_exit) MIPS_SYS(sys_fork , 0, syscall_default_handler) MIPS_SYS(sys_read , 3, do_sys_read) MIPS_SYS(sys_write , 3, do_sys_write) MIPS_SYS(sys_open , 3, do_sys_open) /* 4005 */ MIPS_SYS(sys_close , 1, do_sys_close) MIPS_SYS(sys_waitpid , 3, syscall_default_handler) MIPS_SYS(sys_creat , 2, syscall_default_handler) MIPS_SYS(sys_link , 2, syscall_default_handler) MIPS_SYS(sys_unlink , 1, syscall_default_handler) /* 4010 */ MIPS_SYS(sys_execve , 0, syscall_default_handler) MIPS_SYS(sys_chdir , 1, syscall_default_handler) MIPS_SYS(sys_time , 1, syscall_default_handler) MIPS_SYS(sys_mknod , 3, syscall_default_handler) MIPS_SYS(sys_chmod , 2, syscall_default_handler) /* 4015 */ MIPS_SYS(sys_lchown , 3, syscall_default_handler) MIPS_SYS(sys_ni_syscall , 0, syscall_default_handler) MIPS_SYS(sys_ni_syscall , 0, syscall_default_handler) /* was sys_stat */ MIPS_SYS(sys_lseek , 3, syscall_default_handler) MIPS_SYS(sys_getpid , 0, syscall_default_handler) /* 4020 */ MIPS_SYS(sys_mount , 5, syscall_default_handler) MIPS_SYS(sys_umount , 1, syscall_default_handler) MIPS_SYS(sys_setuid , 1, syscall_default_handler) MIPS_SYS(sys_getuid , 0, syscall_default_handler) MIPS_SYS(sys_stime , 1, syscall_default_handler) /* 4025 */ MIPS_SYS(sys_ptrace , 4, syscall_default_handler) MIPS_SYS(sys_alarm , 1, syscall_default_handler) MIPS_SYS(sys_ni_syscall , 0, syscall_default_handler) /* was sys_fstat */ MIPS_SYS(sys_pause , 0, syscall_default_handler) MIPS_SYS(sys_utime , 2, syscall_default_handler) /* 4030 */ MIPS_SYS(sys_ni_syscall , 0, syscall_default_handler) MIPS_SYS(sys_ni_syscall , 0, syscall_default_handler) MIPS_SYS(sys_access , 2, syscall_default_handler) MIPS_SYS(sys_nice , 1, syscall_default_handler) MIPS_SYS(sys_ni_syscall , 0, syscall_default_handler) /* 4035 */ MIPS_SYS(sys_sync , 0, syscall_default_handler) MIPS_SYS(sys_kill , 2, syscall_default_handler) MIPS_SYS(sys_rename , 2, syscall_default_handler) MIPS_SYS(sys_mkdir , 2, syscall_default_handler) MIPS_SYS(sys_rmdir , 1, syscall_default_handler) /* 4040 */ MIPS_SYS(sys_dup , 1, syscall_default_handler) MIPS_SYS(sys_pipe , 0, syscall_default_handler) MIPS_SYS(sys_times , 1, syscall_default_handler) MIPS_SYS(sys_ni_syscall , 0, syscall_default_handler) MIPS_SYS(sys_brk , 1, do_sys_brk) /* 4045 */ MIPS_SYS(sys_setgid , 1, syscall_default_handler) MIPS_SYS(sys_getgid , 0, syscall_default_handler) MIPS_SYS(sys_ni_syscall , 0, syscall_default_handler) /* was signal(2, syscall_default_handler) */ MIPS_SYS(sys_geteuid , 0, syscall_default_handler) MIPS_SYS(sys_getegid , 0, syscall_default_handler) /* 4050 */ MIPS_SYS(sys_acct , 0, syscall_default_handler) MIPS_SYS(sys_umount2 , 2, syscall_default_handler) MIPS_SYS(sys_ni_syscall , 0, syscall_default_handler) MIPS_SYS(sys_ioctl , 3, syscall_default_handler) MIPS_SYS(sys_fcntl , 3, syscall_default_handler) /* 4055 */ MIPS_SYS(sys_ni_syscall , 2, syscall_default_handler) MIPS_SYS(sys_setpgid , 2, syscall_default_handler) MIPS_SYS(sys_ni_syscall , 0, syscall_default_handler) MIPS_SYS(sys_olduname , 1, syscall_default_handler) MIPS_SYS(sys_umask , 1, syscall_default_handler) /* 4060 */ MIPS_SYS(sys_chroot , 1, syscall_default_handler) MIPS_SYS(sys_ustat , 2, syscall_default_handler) MIPS_SYS(sys_dup2 , 2, syscall_default_handler) MIPS_SYS(sys_getppid , 0, syscall_default_handler) MIPS_SYS(sys_getpgrp , 0, syscall_default_handler) /* 4065 */ MIPS_SYS(sys_setsid , 0, syscall_default_handler) MIPS_SYS(sys_sigaction , 3, syscall_default_handler) MIPS_SYS(sys_sgetmask , 0, syscall_default_handler) MIPS_SYS(sys_ssetmask , 1, syscall_default_handler) MIPS_SYS(sys_setreuid , 2, syscall_default_handler) /* 4070 */ MIPS_SYS(sys_setregid , 2, syscall_default_handler) MIPS_SYS(sys_sigsuspend , 0, syscall_default_handler) MIPS_SYS(sys_sigpending , 1, syscall_default_handler) MIPS_SYS(sys_sethostname, 2, syscall_default_handler) MIPS_SYS(sys_setrlimit , 2, syscall_default_handler) /* 4075 */ MIPS_SYS(sys_getrlimit , 2, syscall_default_handler) MIPS_SYS(sys_getrusage , 2, syscall_default_handler) MIPS_SYS(sys_gettimeofday, 2, syscall_default_handler) MIPS_SYS(sys_settimeofday, 2, syscall_default_handler) MIPS_SYS(sys_getgroups , 2, syscall_default_handler) /* 4080 */ MIPS_SYS(sys_setgroups , 2, syscall_default_handler) MIPS_SYS(sys_ni_syscall , 0, syscall_default_handler) /* old_select */ MIPS_SYS(sys_symlink , 2, syscall_default_handler) MIPS_SYS(sys_ni_syscall , 0, syscall_default_handler) /* was sys_lstat */ MIPS_SYS(sys_readlink , 3, syscall_default_handler) /* 4085 */ MIPS_SYS(sys_uselib , 1, syscall_default_handler) MIPS_SYS(sys_swapon , 2, syscall_default_handler) MIPS_SYS(sys_reboot , 3, syscall_default_handler) MIPS_SYS(old_readdir , 3, syscall_default_handler) MIPS_SYS(old_mmap , 6, syscall_default_handler) /* 4090 */ MIPS_SYS(sys_munmap , 2, syscall_default_handler) MIPS_SYS(sys_truncate , 2, syscall_default_handler) MIPS_SYS(sys_ftruncate , 2, do_sys_ftruncate) MIPS_SYS(sys_fchmod , 2, syscall_default_handler) MIPS_SYS(sys_fchown , 3, syscall_default_handler) /* 4095 */ MIPS_SYS(sys_getpriority, 2, syscall_default_handler) MIPS_SYS(sys_setpriority, 3, syscall_default_handler) MIPS_SYS(sys_ni_syscall , 0, syscall_default_handler) MIPS_SYS(sys_statfs , 2, syscall_default_handler) MIPS_SYS(sys_fstatfs , 2, syscall_default_handler) /* 4100 */ MIPS_SYS(sys_ni_syscall , 0, syscall_default_handler) /* was ioperm(2, syscall_default_handler) */ MIPS_SYS(sys_socketcall , 2, syscall_default_handler) MIPS_SYS(sys_syslog , 3, syscall_default_handler) MIPS_SYS(sys_setitimer , 3, syscall_default_handler) MIPS_SYS(sys_getitimer , 2, syscall_default_handler) /* 4105 */ MIPS_SYS(sys_newstat , 2, syscall_default_handler) MIPS_SYS(sys_newlstat , 2, syscall_default_handler) MIPS_SYS(sys_newfstat , 2, syscall_default_handler) MIPS_SYS(sys_uname , 1, syscall_default_handler) MIPS_SYS(sys_ni_syscall , 0, syscall_default_handler) /* 4110 was iopl(2, syscall_default_handler) */ MIPS_SYS(sys_vhangup , 0, syscall_default_handler) MIPS_SYS(sys_ni_syscall , 0, syscall_default_handler) /* was sys_idle(, syscall_default_handler) */ MIPS_SYS(sys_ni_syscall , 0, syscall_default_handler) /* was sys_vm86 */ MIPS_SYS(sys_wait4 , 4, syscall_default_handler) MIPS_SYS(sys_swapoff , 1, syscall_default_handler) /* 4115 */ MIPS_SYS(sys_sysinfo , 1, syscall_default_handler) MIPS_SYS(sys_ipc , 6, syscall_default_handler) MIPS_SYS(sys_fsync , 1, syscall_default_handler) MIPS_SYS(sys_sigreturn , 0, syscall_default_handler) MIPS_SYS(sys_clone , 6, syscall_default_handler) /* 4120 */ MIPS_SYS(sys_setdomainname, 2, syscall_default_handler) MIPS_SYS(sys_newuname , 1, syscall_default_handler) MIPS_SYS(sys_ni_syscall , 0, syscall_default_handler) /* sys_modify_ldt */ MIPS_SYS(sys_adjtimex , 1, syscall_default_handler) MIPS_SYS(sys_mprotect , 3, syscall_default_handler) /* 4125 */ MIPS_SYS(sys_sigprocmask, 3, syscall_default_handler) MIPS_SYS(sys_ni_syscall , 0, syscall_default_handler) /* was create_module */ MIPS_SYS(sys_init_module, 5, syscall_default_handler) MIPS_SYS(sys_delete_module, 1, syscall_default_handler) MIPS_SYS(sys_ni_syscall , 0, syscall_default_handler) /* 4130 was get_kernel_syms */ MIPS_SYS(sys_quotactl , 0, syscall_default_handler) MIPS_SYS(sys_getpgid , 1, syscall_default_handler) MIPS_SYS(sys_fchdir , 1, syscall_default_handler) MIPS_SYS(sys_bdflush , 2, syscall_default_handler) MIPS_SYS(sys_sysfs , 3, syscall_default_handler) /* 4135 */ MIPS_SYS(sys_personality , 1, syscall_default_handler) MIPS_SYS(sys_ni_syscall , 0, syscall_default_handler) /* for afs_syscall */ MIPS_SYS(sys_setfsuid , 1, syscall_default_handler) MIPS_SYS(sys_setfsgid , 1, syscall_default_handler) MIPS_SYS(sys_llseek , 5, syscall_default_handler) /* 4140 */ MIPS_SYS(sys_getdents , 3, syscall_default_handler) MIPS_SYS(sys_select , 5, syscall_default_handler) MIPS_SYS(sys_flock , 2, syscall_default_handler) MIPS_SYS(sys_msync , 3, syscall_default_handler) MIPS_SYS(sys_readv , 3, do_sys_readv) /* 4145 */ MIPS_SYS(sys_writev , 3, do_sys_writev) MIPS_SYS(sys_cacheflush , 3, syscall_default_handler) MIPS_SYS(sys_cachectl , 3, syscall_default_handler) MIPS_SYS(sys_sysmips , 4, syscall_default_handler) MIPS_SYS(sys_ni_syscall , 0, syscall_default_handler) /* 4150 */ MIPS_SYS(sys_getsid , 1, syscall_default_handler) MIPS_SYS(sys_fdatasync , 0, syscall_default_handler) MIPS_SYS(sys_sysctl , 1, syscall_default_handler) MIPS_SYS(sys_mlock , 2, syscall_default_handler) MIPS_SYS(sys_munlock , 2, syscall_default_handler) /* 4155 */ MIPS_SYS(sys_mlockall , 1, syscall_default_handler) MIPS_SYS(sys_munlockall , 0, syscall_default_handler) MIPS_SYS(sys_sched_setparam, 2, syscall_default_handler) MIPS_SYS(sys_sched_getparam, 2, syscall_default_handler) MIPS_SYS(sys_sched_setscheduler, 3, syscall_default_handler) /* 4160 */ MIPS_SYS(sys_sched_getscheduler, 1, syscall_default_handler) MIPS_SYS(sys_sched_yield, 0, syscall_default_handler) MIPS_SYS(sys_sched_get_priority_max, 1, syscall_default_handler) MIPS_SYS(sys_sched_get_priority_min, 1, syscall_default_handler) MIPS_SYS(sys_sched_rr_get_interval, 2, syscall_default_handler) /* 4165 */ MIPS_SYS(sys_nanosleep, 2, syscall_default_handler) MIPS_SYS(sys_mremap , 5, syscall_default_handler) MIPS_SYS(sys_accept , 3, syscall_default_handler) MIPS_SYS(sys_bind , 3, syscall_default_handler) MIPS_SYS(sys_connect , 3, syscall_default_handler) /* 4170 */ MIPS_SYS(sys_getpeername, 3, syscall_default_handler) MIPS_SYS(sys_getsockname, 3, syscall_default_handler) MIPS_SYS(sys_getsockopt , 5, syscall_default_handler) MIPS_SYS(sys_listen , 2, syscall_default_handler) MIPS_SYS(sys_recv , 4, syscall_default_handler) /* 4175 */ MIPS_SYS(sys_recvfrom , 6, syscall_default_handler) MIPS_SYS(sys_recvmsg , 3, syscall_default_handler) MIPS_SYS(sys_send , 4, syscall_default_handler) MIPS_SYS(sys_sendmsg , 3, syscall_default_handler) MIPS_SYS(sys_sendto , 6, syscall_default_handler) /* 4180 */ MIPS_SYS(sys_setsockopt , 5, syscall_default_handler) MIPS_SYS(sys_shutdown , 2, syscall_default_handler) MIPS_SYS(sys_socket , 3, syscall_default_handler) MIPS_SYS(sys_socketpair , 4, syscall_default_handler) MIPS_SYS(sys_setresuid , 3, syscall_default_handler) /* 4185 */ MIPS_SYS(sys_getresuid , 3, syscall_default_handler) MIPS_SYS(sys_ni_syscall , 0, syscall_default_handler) /* was sys_query_module */ MIPS_SYS(sys_poll , 3, syscall_default_handler) MIPS_SYS(sys_nfsservctl , 3, syscall_default_handler) MIPS_SYS(sys_setresgid , 3, syscall_default_handler) /* 4190 */ MIPS_SYS(sys_getresgid , 3, syscall_default_handler) MIPS_SYS(sys_prctl , 5, syscall_default_handler) MIPS_SYS(sys_rt_sigreturn, 0, syscall_default_handler) MIPS_SYS(sys_rt_sigaction, 4, syscall_default_handler) MIPS_SYS(sys_rt_sigprocmask, 4, syscall_default_handler) /* 4195 */ MIPS_SYS(sys_rt_sigpending, 2, syscall_default_handler) MIPS_SYS(sys_rt_sigtimedwait, 4, syscall_default_handler) MIPS_SYS(sys_rt_sigqueueinfo, 3, syscall_default_handler) MIPS_SYS(sys_rt_sigsuspend, 0, syscall_default_handler) MIPS_SYS(sys_pread64 , 6, syscall_default_handler) /* 4200 */ MIPS_SYS(sys_pwrite64 , 6, syscall_default_handler) MIPS_SYS(sys_chown , 3, syscall_default_handler) MIPS_SYS(sys_getcwd , 2, syscall_default_handler) MIPS_SYS(sys_capget , 2, syscall_default_handler) MIPS_SYS(sys_capset , 2, syscall_default_handler) /* 4205 */ MIPS_SYS(sys_sigaltstack, 2, syscall_default_handler) MIPS_SYS(sys_sendfile , 4, syscall_default_handler) MIPS_SYS(sys_ni_syscall , 0, syscall_default_handler) MIPS_SYS(sys_ni_syscall , 0, syscall_default_handler) MIPS_SYS(sys_mmap2 , 6, do_sys_mmap2) /* 4210 */ MIPS_SYS(sys_truncate64 , 4, syscall_default_handler) MIPS_SYS(sys_ftruncate64, 4, syscall_default_handler) MIPS_SYS(sys_stat64 , 2, syscall_default_handler) MIPS_SYS(sys_lstat64 , 2, syscall_default_handler) MIPS_SYS(sys_fstat64 , 2, syscall_default_handler) /* 4215 */ MIPS_SYS(sys_pivot_root , 2, syscall_default_handler) MIPS_SYS(sys_mincore , 3, syscall_default_handler) MIPS_SYS(sys_madvise , 3, syscall_default_handler) MIPS_SYS(sys_getdents64 , 3, syscall_default_handler) MIPS_SYS(sys_fcntl64 , 3, syscall_default_handler) /* 4220 */ MIPS_SYS(sys_ni_syscall , 0, syscall_default_handler) MIPS_SYS(sys_gettid , 0, syscall_default_handler) MIPS_SYS(sys_readahead , 5, syscall_default_handler) MIPS_SYS(sys_setxattr , 5, syscall_default_handler) MIPS_SYS(sys_lsetxattr , 5, syscall_default_handler) /* 4225 */ MIPS_SYS(sys_fsetxattr , 5, syscall_default_handler) MIPS_SYS(sys_getxattr , 4, syscall_default_handler) MIPS_SYS(sys_lgetxattr , 4, syscall_default_handler) MIPS_SYS(sys_fgetxattr , 4, syscall_default_handler) MIPS_SYS(sys_listxattr , 3, syscall_default_handler) /* 4230 */ MIPS_SYS(sys_llistxattr , 3, syscall_default_handler) MIPS_SYS(sys_flistxattr , 3, syscall_default_handler) MIPS_SYS(sys_removexattr , 2, syscall_default_handler) MIPS_SYS(sys_lremovexattr, 2, syscall_default_handler) MIPS_SYS(sys_fremovexattr, 2, syscall_default_handler) /* 4235 */ MIPS_SYS(sys_tkill , 2, syscall_default_handler) MIPS_SYS(sys_sendfile64 , 5, syscall_default_handler) MIPS_SYS(sys_futex , 6, syscall_default_handler) MIPS_SYS(sys_sched_setaffinity, 3, syscall_default_handler) MIPS_SYS(sys_sched_getaffinity, 3, syscall_default_handler) /* 4240 */ MIPS_SYS(sys_io_setup , 2, syscall_default_handler) MIPS_SYS(sys_io_destroy , 1, syscall_default_handler) MIPS_SYS(sys_io_getevents, 5, syscall_default_handler) MIPS_SYS(sys_io_submit , 3, syscall_default_handler) MIPS_SYS(sys_io_cancel , 3, syscall_default_handler) /* 4245 */ MIPS_SYS(sys_exit_group , 1, syscall_default_handler) MIPS_SYS(sys_lookup_dcookie, 3, syscall_default_handler) MIPS_SYS(sys_epoll_create, 1, syscall_default_handler) MIPS_SYS(sys_epoll_ctl , 4, syscall_default_handler) MIPS_SYS(sys_epoll_wait , 3, syscall_default_handler) /* 4250 */ MIPS_SYS(sys_remap_file_pages, 5, syscall_default_handler) MIPS_SYS(sys_set_tid_address, 1, syscall_default_handler) MIPS_SYS(sys_restart_syscall, 0, syscall_default_handler) MIPS_SYS(sys_fadvise64_64, 7, syscall_default_handler) MIPS_SYS(sys_statfs64 , 3, syscall_default_handler) /* 4255 */ MIPS_SYS(sys_fstatfs64 , 2, syscall_default_handler) MIPS_SYS(sys_timer_create, 3, syscall_default_handler) MIPS_SYS(sys_timer_settime, 4, syscall_default_handler) MIPS_SYS(sys_timer_gettime, 2, syscall_default_handler) MIPS_SYS(sys_timer_getoverrun, 1, syscall_default_handler) /* 4260 */ MIPS_SYS(sys_timer_delete, 1, syscall_default_handler) MIPS_SYS(sys_clock_settime, 2, syscall_default_handler) MIPS_SYS(sys_clock_gettime, 2, syscall_default_handler) MIPS_SYS(sys_clock_getres, 2, syscall_default_handler) MIPS_SYS(sys_clock_nanosleep, 4, syscall_default_handler) /* 4265 */ MIPS_SYS(sys_tgkill , 3, syscall_default_handler) MIPS_SYS(sys_utimes , 2, syscall_default_handler) MIPS_SYS(sys_mbind , 4, syscall_default_handler) MIPS_SYS(sys_ni_syscall , 0, syscall_default_handler) /* sys_get_mempolicy */ MIPS_SYS(sys_ni_syscall , 0, syscall_default_handler) /* 4270 sys_set_mempolicy */ MIPS_SYS(sys_mq_open , 4, syscall_default_handler) MIPS_SYS(sys_mq_unlink , 1, syscall_default_handler) MIPS_SYS(sys_mq_timedsend, 5, syscall_default_handler) MIPS_SYS(sys_mq_timedreceive, 5, syscall_default_handler) MIPS_SYS(sys_mq_notify , 2, syscall_default_handler) /* 4275 */ MIPS_SYS(sys_mq_getsetattr, 3, syscall_default_handler) MIPS_SYS(sys_ni_syscall , 0, syscall_default_handler) /* sys_vserver */ MIPS_SYS(sys_waitid , 4, syscall_default_handler) MIPS_SYS(sys_ni_syscall , 0, syscall_default_handler) /* available, was setaltroot */ MIPS_SYS(sys_add_key , 5, syscall_default_handler) MIPS_SYS(sys_request_key, 4, syscall_default_handler) MIPS_SYS(sys_keyctl , 5, syscall_default_handler) MIPS_SYS(sys_set_thread_area, 1, do_sys_set_thread_area) MIPS_SYS(sys_inotify_init, 0, syscall_default_handler) MIPS_SYS(sys_inotify_add_watch, 3, syscall_default_handler) /* 4285 */ MIPS_SYS(sys_inotify_rm_watch, 2, syscall_default_handler) MIPS_SYS(sys_migrate_pages, 4, syscall_default_handler) MIPS_SYS(sys_openat, 4, syscall_default_handler) MIPS_SYS(sys_mkdirat, 3, syscall_default_handler) MIPS_SYS(sys_mknodat, 4, syscall_default_handler) /* 4290 */ MIPS_SYS(sys_fchownat, 5, syscall_default_handler) MIPS_SYS(sys_futimesat, 3, syscall_default_handler) MIPS_SYS(sys_fstatat64, 4, syscall_default_handler) MIPS_SYS(sys_unlinkat, 3, syscall_default_handler) MIPS_SYS(sys_renameat, 4, syscall_default_handler) /* 4295 */ MIPS_SYS(sys_linkat, 5, syscall_default_handler) MIPS_SYS(sys_symlinkat, 3, syscall_default_handler) MIPS_SYS(sys_readlinkat, 4, syscall_default_handler) MIPS_SYS(sys_fchmodat, 3, syscall_default_handler) MIPS_SYS(sys_faccessat, 3, syscall_default_handler) /* 4300 */ MIPS_SYS(sys_pselect6, 6, syscall_default_handler) MIPS_SYS(sys_ppoll, 5, syscall_default_handler) MIPS_SYS(sys_unshare, 1, syscall_default_handler) MIPS_SYS(sys_splice, 6, syscall_default_handler) MIPS_SYS(sys_sync_file_range, 7, syscall_default_handler) /* 4305 */ MIPS_SYS(sys_tee, 4, syscall_default_handler) MIPS_SYS(sys_vmsplice, 4, syscall_default_handler) MIPS_SYS(sys_move_pages, 6, syscall_default_handler) MIPS_SYS(sys_set_robust_list, 2, syscall_default_handler) MIPS_SYS(sys_get_robust_list, 3, syscall_default_handler) /* 4310 */ MIPS_SYS(sys_kexec_load, 4, syscall_default_handler) MIPS_SYS(sys_getcpu, 3, syscall_default_handler) MIPS_SYS(sys_epoll_pwait, 6, syscall_default_handler) MIPS_SYS(sys_ioprio_set, 3, syscall_default_handler) MIPS_SYS(sys_ioprio_get, 2, syscall_default_handler) MIPS_SYS(sys_utimensat, 4, syscall_default_handler) MIPS_SYS(sys_signalfd, 3, syscall_default_handler) MIPS_SYS(sys_ni_syscall, 0, syscall_default_handler) /* was timerfd */ MIPS_SYS(sys_eventfd, 1, syscall_default_handler) MIPS_SYS(sys_fallocate, 6, syscall_default_handler) /* 4320 */ MIPS_SYS(sys_timerfd_create, 2, syscall_default_handler) MIPS_SYS(sys_timerfd_gettime, 2, syscall_default_handler) MIPS_SYS(sys_timerfd_settime, 4, syscall_default_handler) MIPS_SYS(sys_signalfd4, 4, syscall_default_handler) MIPS_SYS(sys_eventfd2, 2, syscall_default_handler) /* 4325 */ MIPS_SYS(sys_epoll_create1, 1, syscall_default_handler) MIPS_SYS(sys_dup3, 3, syscall_default_handler) MIPS_SYS(sys_pipe2, 2, syscall_default_handler) MIPS_SYS(sys_inotify_init1, 1, syscall_default_handler) MIPS_SYS(sys_preadv, 5, syscall_default_handler) /* 4330 */ MIPS_SYS(sys_pwritev, 5, syscall_default_handler) MIPS_SYS(sys_rt_tgsigqueueinfo, 4, syscall_default_handler) MIPS_SYS(sys_perf_event_open, 5, syscall_default_handler) MIPS_SYS(sys_accept4, 4, syscall_default_handler) MIPS_SYS(sys_recvmmsg, 5, syscall_default_handler) /* 4335 */ MIPS_SYS(sys_fanotify_init, 2, syscall_default_handler) MIPS_SYS(sys_fanotify_mark, 6, syscall_default_handler) MIPS_SYS(sys_prlimit64, 4, syscall_default_handler) MIPS_SYS(sys_name_to_handle_at, 5, syscall_default_handler) MIPS_SYS(sys_open_by_handle_at, 3, syscall_default_handler) /* 4340 */ MIPS_SYS(sys_clock_adjtime, 2, syscall_default_handler) MIPS_SYS(sys_syncfs, 1, syscall_default_handler) MIPS_SYS(sys_sendmmsg, 4, syscall_default_handler) MIPS_SYS(sys_setns, 2, syscall_default_handler) MIPS_SYS(sys_process_vm_readv, 6, syscall_default_handler) /* 345 */ MIPS_SYS(sys_process_vm_writev, 6, syscall_default_handler) MIPS_SYS(sys_kcmp, 5, syscall_default_handler) MIPS_SYS(sys_finit_module, 3, syscall_default_handler) MIPS_SYS(sys_sched_setattr, 2, syscall_default_handler) MIPS_SYS(sys_sched_getattr, 3, syscall_default_handler) /* 350 */ MIPS_SYS(sys_renameat2, 5, syscall_default_handler) MIPS_SYS(sys_seccomp, 3, syscall_default_handler) MIPS_SYS(sys_getrandom, 3, syscall_default_handler) MIPS_SYS(sys_memfd_create, 2, syscall_default_handler) MIPS_SYS(sys_bpf, 3, syscall_default_handler) /* 355 */ MIPS_SYS(sys_execveat, 5, syscall_default_handler) MIPS_SYS(sys_userfaultfd, 1, syscall_default_handler) MIPS_SYS(sys_membarrier, 2, syscall_default_handler) MIPS_SYS(sys_mlock2, 3, syscall_default_handler) MIPS_SYS(sys_copy_file_range, 6, syscall_default_handler) /* 360 */ MIPS_SYS(sys_preadv2, 6, syscall_default_handler) MIPS_SYS(sys_pwritev2, 6, syscall_default_handler) }; const unsigned mips_syscall_args_size = sizeof(mips_syscall_args)/sizeof(*mips_syscall_args); static const mips_syscall_desc_t spim_syscall_args[] = { MIPS_SYS(print_integer, 1, do_spim_print_integer) /* 1 */ MIPS_SYS(print_float, 1, syscall_default_handler) /* 2 */ MIPS_SYS(print_double, 1, syscall_default_handler) /* 3 */ MIPS_SYS(print_string, 1, do_spim_print_string) /* 4 */ MIPS_SYS(read_integer, 0, syscall_default_handler) /* 5 */ MIPS_SYS(read_float, 0, syscall_default_handler) /* 6 */ MIPS_SYS(read_double, 0, syscall_default_handler) /* 7 */ MIPS_SYS(read_string, 0, do_spim_read_string) /* 8 */ MIPS_SYS(sbrk, 0, do_spim_sbrk) /* 9 */ MIPS_SYS(exit, 1, do_spim_exit) /* 10 */ MIPS_SYS(print_character, 1, do_spim_print_character)/* 11 */ MIPS_SYS(read_character, 1, do_spim_read_character) /* 12 */ MIPS_SYS(open_file, 3, do_sys_open) /* 13 */ MIPS_SYS(read_from_file, 3, do_sys_read) /* 14 */ MIPS_SYS(read_to_file, 3, do_sys_write) /* 15 */ MIPS_SYS(close_file, 3, do_sys_close) /* 16 */ MIPS_SYS(exit, 1, do_sys_exit) /* 17 */ }; const unsigned spim_syscall_args_size = sizeof(spim_syscall_args)/sizeof(*spim_syscall_args); OsSyscallExceptionHandler::OsSyscallExceptionHandler(bool known_syscall_stop, bool unknown_syscall_stop, QString fs_root) : fd_mapping(3, FD_TERMINAL) { brk_limit = 0; anonymous_base = 0x60000000; anonymous_last = anonymous_base; this->known_syscall_stop = known_syscall_stop; this->unknown_syscall_stop = unknown_syscall_stop; this->fs_root = fs_root; } bool OsSyscallExceptionHandler::handle_exception(Core *core, Registers *regs, ExceptionCause excause, std::uint32_t inst_addr, std::uint32_t next_addr, std::uint32_t jump_branch_pc, bool in_delay_slot, std::uint32_t mem_ref_addr) { unsigned int syscall_num = regs->read_gp(2); const mips_syscall_desc_t *sdesc; std::uint32_t a1 = 0, a2 = 0, a3 = 0, a4 = 0, a5 = 0, a6 = 0, a7 = 0, a8 = 0; std::uint32_t sp = regs->read_gp(29); std::uint32_t result; int status; MemoryAccess *mem_data = core->get_mem_data(); MemoryAccess *mem_program = core->get_mem_program(); (void)mem_program; #if 1 printf("Exception cause %d instruction PC 0x%08lx next PC 0x%08lx jump branch PC 0x%08lx " "in_delay_slot %d registers PC 0x%08lx mem ref 0x%08lx\n", excause, (unsigned long)inst_addr, (unsigned long)next_addr, (unsigned long)jump_branch_pc, (int)in_delay_slot, (unsigned long)regs->read_pc(), (unsigned long)mem_ref_addr); #else (void)excause; (void)inst_addr; (void)next_addr; (void)mem_ref_addr; (void)regs; (void)jump_branch_pc; (void)in_delay_slot; #endif if (syscall_num >= 1 && syscall_num < 1 + spim_syscall_args_size) { sdesc = &spim_syscall_args[syscall_num - 1]; } else if (syscall_num >= 4000 && syscall_num < 4000 + mips_syscall_args_size) { syscall_num -= 4000; sdesc = &mips_syscall_args[syscall_num]; } else { throw QTMIPS_EXCEPTION(SyscallUnknown, "System call number unknown ", QString::number(syscall_num)); } a1 = regs->read_gp(4); a2 = regs->read_gp(5); a3 = regs->read_gp(6); a4 = regs->read_gp(7); switch (sdesc->args) { case 8: a8 = mem_data->read_word(sp + 28); FALLTROUGH case 7: a7 = mem_data->read_word(sp + 24); FALLTROUGH case 6: a6 = mem_data->read_word(sp + 20); FALLTROUGH case 5: a5 = mem_data->read_word(sp + 16); FALLTROUGH default: break; } #if 1 printf("Syscall %s number %d/0x%x a1 %ld a2 %ld a3 %ld a4 %ld\n", sdesc->name, syscall_num, syscall_num, (unsigned long)a1, (unsigned long)a2, (unsigned long)a3, (unsigned long)a4); #endif status = (this->*sdesc->handler)(result, core, syscall_num, a1, a2, a3, a4, a5, a6, a7, a8); if (known_syscall_stop) emit core->stop_on_exception_reached(); regs->write_gp(7, status); if (status < 0) regs->write_gp(2, status); else regs->write_gp(2, result); return true; }; std::int32_t OsSyscallExceptionHandler::write_mem(machine::MemoryAccess *mem, std::uint32_t addr, const QVector &data, std::uint32_t count) { if ((std::uint32_t)data.size() < count) count = data.size(); for (std::uint32_t i = 0; i < count; i++) { mem->write_byte(addr++, data[i]); } return count; } std::int32_t OsSyscallExceptionHandler::read_mem(machine::MemoryAccess *mem, std::uint32_t addr, QVector &data, std::uint32_t count) { data.resize(count); for (std::uint32_t i = 0; i < count; i++) { data[i] = mem->read_byte(addr++); } return count; } std::int32_t OsSyscallExceptionHandler::write_io(int fd, const QVector &data, std::uint32_t count) { if ((std::uint32_t)data.size() < count) count = data.size(); if (fd == FD_UNUSED) { return -1; } else if (fd == FD_TERMINAL) { for (std::uint32_t i = 0; i < count; i++) emit char_written(fd, data[i]); } else { count = write(fd, data.data(), count); } return result_errno_if_error(count); } std::int32_t OsSyscallExceptionHandler::read_io(int fd, QVector &data, std::uint32_t count, bool add_nl_at_eof) { data.resize(count); if ((std::uint32_t)data.size() < count) count = data.size(); if (fd == FD_UNUSED) { return -1; } else if (fd == FD_TERMINAL) { for (std::uint32_t i = 0; i < count; i++) { unsigned int byte; bool available = false; emit rx_byte_pool(fd, byte, available); if (!available) { // add final newline if there are no more data if (add_nl_at_eof) data[i] = '\n'; count = i + 1; break; } data[i] = byte; } } else { count = read(fd, data.data(), count); } if ((std::int32_t)count >= 0) data.resize(count); return result_errno_if_error(count); } int OsSyscallExceptionHandler::allocate_fd(int val) { int i; for (i = 0 ; i < fd_mapping.size(); i++) { if (fd_mapping[i] == FD_UNUSED) { fd_mapping[i] = val; return i; } } i = fd_mapping.size(); fd_mapping.resize(i + 1); fd_mapping[i] = val; return i; } int OsSyscallExceptionHandler::file_open(QString fname, int flags, int mode) { int targetfd, fd; int hostflags = 0; (void)mode; for (auto i = map_target_o_flags_to_o_flags.begin(); i != map_target_o_flags_to_o_flags.end(); i++) if (flags & i.key()) hostflags |= i.value(); switch (flags & TARGET_O_ACCMODE) { case TARGET_O_RDONLY: hostflags |= O_RDONLY; break; case TARGET_O_WRONLY: hostflags |= O_WRONLY; break; case TARGET_O_RDWR: hostflags |= O_RDWR; break; } if (fs_root.size() == 0) { return allocate_fd(FD_TERMINAL); } fname = filepath_to_host(fname); fd = open(fname.toLatin1().data(), hostflags, OPEN_MODE); if (fd >= 0) { targetfd = allocate_fd(fd); } else { targetfd = result_errno_if_error(fd); } return targetfd; } int OsSyscallExceptionHandler::targetfd_to_fd(int targetfd) { if (targetfd < 0) return FD_INVALID; if (targetfd >= fd_mapping.size()) return FD_INVALID; return fd_mapping.at(targetfd); } void OsSyscallExceptionHandler::close_fd(int targetfd) { if (targetfd <= fd_mapping.size()) fd_mapping[targetfd] = FD_UNUSED; } QString OsSyscallExceptionHandler::filepath_to_host(QString path) { int pos = 0; int prev = 0; while(1) { if (((path.size() - pos == 2) && (path.mid(pos, -1) == "..")) || ((path.size() - pos > 2) && (path.mid(pos, 3) == "../"))) { if (pos == 0) { prev = 0; } else { if (pos == 1) prev = 0; else prev = path.lastIndexOf('/', pos - 2) + 1; } path.remove(prev, pos + 3 - prev); pos = prev; continue; } pos = path.indexOf('/', pos); if (pos == -1) break; pos += 1; } if ((path.size() >= 1) && path.at(0) == '/') path = fs_root + path; else path = fs_root + '/' + path; return path; } int OsSyscallExceptionHandler::syscall_default_handler(std::uint32_t &result, Core *core, std::uint32_t syscall_num, std::uint32_t a1, std::uint32_t a2, std::uint32_t a3, std::uint32_t a4, std::uint32_t a5, std::uint32_t a6, std::uint32_t a7, std::uint32_t a8) { const mips_syscall_desc_t *sdesc = &mips_syscall_args[syscall_num]; #if 1 printf("Unimplemented syscall %s number %d/0x%x a1 %ld a2 %ld a3 %ld a4 %ld\n", sdesc->name, syscall_num, syscall_num, (unsigned long)a1, (unsigned long)a2, (unsigned long)a3, (unsigned long)a4); #endif (void)core; (void)syscall_num; (void)a1; (void)a2; (void)a3; (void)a4; (void)a5; (void)a6; (void)a7; (void)a8; result = 0; if (unknown_syscall_stop) emit core->stop_on_exception_reached(); return TARGET_ENOSYS; } // void exit(int status); int OsSyscallExceptionHandler::do_sys_exit(std::uint32_t &result, Core *core, std::uint32_t syscall_num, std::uint32_t a1, std::uint32_t a2, std::uint32_t a3, std::uint32_t a4, std::uint32_t a5, std::uint32_t a6, std::uint32_t a7, std::uint32_t a8) { (void)core; (void)syscall_num; (void)a1; (void)a2; (void)a3; (void)a4; (void)a5; (void)a6; (void)a7; (void)a8; result = 0; int status = a1; printf("sys_exit status %d\n", status); emit core->stop_on_exception_reached(); return 0; } int OsSyscallExceptionHandler::do_sys_set_thread_area(std::uint32_t &result, Core *core, std::uint32_t syscall_num, std::uint32_t a1, std::uint32_t a2, std::uint32_t a3, std::uint32_t a4, std::uint32_t a5, std::uint32_t a6, std::uint32_t a7, std::uint32_t a8) { (void)core; (void)syscall_num; (void)a1; (void)a2; (void)a3; (void)a4; (void)a5; (void)a6; (void)a7; (void)a8; core->set_c0_userlocal(a1); result = 0; return 0; } // ssize_t writev(int fd, const struct iovec *iov, int iovcnt); int OsSyscallExceptionHandler::do_sys_writev(std::uint32_t &result, Core *core, std::uint32_t syscall_num, std::uint32_t a1, std::uint32_t a2, std::uint32_t a3, std::uint32_t a4, std::uint32_t a5, std::uint32_t a6, std::uint32_t a7, std::uint32_t a8) { (void)core; (void)syscall_num; (void)a1; (void)a2; (void)a3; (void)a4; (void)a5; (void)a6; (void)a7; (void)a8; result = 0; int fd = a1; std::uint32_t iov = a2; int iovcnt = a3; MemoryAccess *mem = core->get_mem_data(); std::int32_t count; QVector data; printf("sys_writev to fd %d\n", fd); fd = targetfd_to_fd(fd); if (fd == FD_INVALID) { result = -TARGET_EINVAL; return 0; } while (iovcnt-- > 0) { std::uint32_t iov_base = mem->read_word(iov); std::uint32_t iov_len = mem->read_word(iov + 4); iov += 8; read_mem(mem, iov_base, data, iov_len); count = write_io(fd, data, iov_len); if (count >= 0) { result += count; } else { if (result == 0) result = count; } if (count < (std::int32_t)iov_len) break; } return status_from_result(result); } // ssize_t write(int fd, const void *buf, size_t count); int OsSyscallExceptionHandler::do_sys_write(std::uint32_t &result, Core *core, std::uint32_t syscall_num, std::uint32_t a1, std::uint32_t a2, std::uint32_t a3, std::uint32_t a4, std::uint32_t a5, std::uint32_t a6, std::uint32_t a7, std::uint32_t a8) { (void)core; (void)syscall_num; (void)a1; (void)a2; (void)a3; (void)a4; (void)a5; (void)a6; (void)a7; (void)a8; result = 0; int fd = a1; std::uint32_t buf = a2; int size = a3; MemoryAccess *mem = core->get_mem_data(); std::int32_t count; QVector data; printf("sys_write to fd %d\n", fd); fd = targetfd_to_fd(fd); if (fd == FD_INVALID) { result = -TARGET_EINVAL; return 0; } read_mem(mem, buf, data, size); count = write_io(fd, data, size); result = count; return status_from_result(result); } // ssize_t readv(int fd, const struct iovec *iov, int iovcnt); int OsSyscallExceptionHandler::do_sys_readv(std::uint32_t &result, Core *core, std::uint32_t syscall_num, std::uint32_t a1, std::uint32_t a2, std::uint32_t a3, std::uint32_t a4, std::uint32_t a5, std::uint32_t a6, std::uint32_t a7, std::uint32_t a8) { (void)core; (void)syscall_num; (void)a1; (void)a2; (void)a3; (void)a4; (void)a5; (void)a6; (void)a7; (void)a8; result = 0; int fd = a1; std::uint32_t iov = a2; int iovcnt = a3; MemoryAccess *mem = core->get_mem_data(); std::int32_t count; QVector data; printf("sys_readv to fd %d\n", fd); fd = targetfd_to_fd(fd); if (fd == FD_INVALID) { result = -TARGET_EINVAL; return 0; } while (iovcnt-- > 0) { std::uint32_t iov_base = mem->read_word(iov); std::uint32_t iov_len = mem->read_word(iov + 4); iov += 8; count = read_io(fd, data, iov_len, true); if (count >= 0) { write_mem(mem, iov_base, data, count); result += count; } else { if (result == 0) result = count; } if (count < (std::int32_t)iov_len) break; } return status_from_result(result); } // ssize_t read(int fd, void *buf, size_t count); int OsSyscallExceptionHandler::do_sys_read(std::uint32_t &result, Core *core, std::uint32_t syscall_num, std::uint32_t a1, std::uint32_t a2, std::uint32_t a3, std::uint32_t a4, std::uint32_t a5, std::uint32_t a6, std::uint32_t a7, std::uint32_t a8) { (void)core; (void)syscall_num; (void)a1; (void)a2; (void)a3; (void)a4; (void)a5; (void)a6; (void)a7; (void)a8; result = 0; int fd = a1; std::uint32_t buf = a2; int size = a3; MemoryAccess *mem = core->get_mem_data(); std::int32_t count; QVector data; printf("sys_read to fd %d\n", fd); fd = targetfd_to_fd(fd); if (fd == FD_INVALID) { result = -TARGET_EINVAL; return 0; } result = 0; count = read_io(fd, data, size, true); if (count >= 0) { write_mem(mem, buf, data, size); } result = count; return status_from_result(result); } // int open(const char *pathname, int flags, mode_t mode); int OsSyscallExceptionHandler::do_sys_open(std::uint32_t &result, Core *core, std::uint32_t syscall_num, std::uint32_t a1, std::uint32_t a2, std::uint32_t a3, std::uint32_t a4, std::uint32_t a5, std::uint32_t a6, std::uint32_t a7, std::uint32_t a8) { (void)core; (void)syscall_num; (void)a1; (void)a2; (void)a3; (void)a4; (void)a5; (void)a6; (void)a7; (void)a8; result = 0; std::uint32_t pathname = a1; int flags = a2; int mode = a3; std::uint32_t ch; MemoryAccess *mem = core->get_mem_data(); printf("sys_open filename\n"); QString fname; while (true) { ch = mem->read_byte(pathname++); if (ch == 0) break; fname.append(QChar(ch)); } result = file_open(fname, flags, mode); return status_from_result(result); } // int close(int fd); int OsSyscallExceptionHandler::do_sys_close(std::uint32_t &result, Core *core, std::uint32_t syscall_num, std::uint32_t a1, std::uint32_t a2, std::uint32_t a3, std::uint32_t a4, std::uint32_t a5, std::uint32_t a6, std::uint32_t a7, std::uint32_t a8) { (void)core; (void)syscall_num; (void)a1; (void)a2; (void)a3; (void)a4; (void)a5; (void)a6; (void)a7; (void)a8; result = 0; int fd = a1; printf("sys_close fd %d\n", fd); int targetfd = fd; fd = targetfd_to_fd(fd); if (fd == FD_INVALID) { result = -TARGET_EINVAL; return 0; } close(fd); close_fd(targetfd); return status_from_result(result); } // int ftruncate(int fd, off_t length); int OsSyscallExceptionHandler::do_sys_ftruncate(std::uint32_t &result, Core *core, std::uint32_t syscall_num, std::uint32_t a1, std::uint32_t a2, std::uint32_t a3, std::uint32_t a4, std::uint32_t a5, std::uint32_t a6, std::uint32_t a7, std::uint32_t a8) { (void)core; (void)syscall_num; (void)a1; (void)a2; (void)a3; (void)a4; (void)a5; (void)a6; (void)a7; (void)a8; result = 0; int fd = a1; std::uint64_t length = ((std::uint64_t)a2 << 32) | a3; printf("sys_ftruncate fd %d\n", fd); fd = targetfd_to_fd(fd); if (fd == FD_INVALID) { result = -TARGET_EINVAL; return 0; } result = result_errno_if_error(ftruncate(fd, length)); return status_from_result(result); } // int or void * brk(void *addr); int OsSyscallExceptionHandler::do_sys_brk(std::uint32_t &result, Core *core, std::uint32_t syscall_num, std::uint32_t a1, std::uint32_t a2, std::uint32_t a3, std::uint32_t a4, std::uint32_t a5, std::uint32_t a6, std::uint32_t a7, std::uint32_t a8) { (void)core; (void)syscall_num; (void)a1; (void)a2; (void)a3; (void)a4; (void)a5; (void)a6; (void)a7; (void)a8; result = 0; std::uint32_t new_limit = a1; brk_limit = new_limit; result = brk_limit; return 0; } #define TARGET_SYSCALL_MMAP2_UNIT 4096ULL #define TARGET_MAP_ANONYMOUS 0x20 // void *mmap2(void *addr, size_t length, int prot, // int flags, int fd, off_t pgoffset); int OsSyscallExceptionHandler::do_sys_mmap2(std::uint32_t &result, Core *core, std::uint32_t syscall_num, std::uint32_t a1, std::uint32_t a2, std::uint32_t a3, std::uint32_t a4, std::uint32_t a5, std::uint32_t a6, std::uint32_t a7, std::uint32_t a8) { (void)core; (void)syscall_num; (void)a1; (void)a2; (void)a3; (void)a4; (void)a5; (void)a6; (void)a7; (void)a8; result = 0; std::uint32_t addr = a1; std::uint32_t lenght = a2; std::uint32_t prot = a3; std::uint32_t flags = a4; std::uint32_t fd = a5; std::uint64_t offset = a6 * TARGET_SYSCALL_MMAP2_UNIT; printf("sys_mmap2 addr = 0x%08lx lenght= 0x%08lx prot = 0x%08lx flags = 0x%08lx fd = %d offset = 0x%08llx\n", (unsigned long)addr, (unsigned long)lenght, (unsigned long)prot, (unsigned long)flags, (int)fd, (unsigned long long) offset); lenght = (lenght + TARGET_SYSCALL_MMAP2_UNIT - 1) & ~(TARGET_SYSCALL_MMAP2_UNIT - 1); anonymous_last = (anonymous_last + TARGET_SYSCALL_MMAP2_UNIT - 1) & ~(TARGET_SYSCALL_MMAP2_UNIT - 1); result = anonymous_last; anonymous_last += lenght; return 0; } int OsSyscallExceptionHandler::do_spim_print_integer(std::uint32_t &result, Core *core, std::uint32_t syscall_num, std::uint32_t a1, std::uint32_t a2, std::uint32_t a3, std::uint32_t a4, std::uint32_t a5, std::uint32_t a6, std::uint32_t a7, std::uint32_t a8) { (void)core; (void)syscall_num; (void)a1; (void)a2; (void)a3; (void)a4; (void)a5; (void)a6; (void)a7; (void)a8; result = 0; QString str = QString::number(a1); QVector data; foreach (QChar ch, str) data.append(ch.toLatin1()); write_io(1, data, data.size()); return 0; } int OsSyscallExceptionHandler::do_spim_print_string(std::uint32_t &result, Core *core, std::uint32_t syscall_num, std::uint32_t a1, std::uint32_t a2, std::uint32_t a3, std::uint32_t a4, std::uint32_t a5, std::uint32_t a6, std::uint32_t a7, std::uint32_t a8) { (void)core; (void)syscall_num; (void)a1; (void)a2; (void)a3; (void)a4; (void)a5; (void)a6; (void)a7; (void)a8; std::uint32_t str_ptr = a1; QVector data; MemoryAccess *mem = core->get_mem_data(); while (true) { std::uint8_t ch; ch = mem->read_byte(str_ptr++); if (ch == 0) break; data.append(ch); } write_io(1, data, data.size()); result = 0; return 0; } int OsSyscallExceptionHandler::do_spim_read_string(std::uint32_t &result, Core *core, std::uint32_t syscall_num, std::uint32_t a1, std::uint32_t a2, std::uint32_t a3, std::uint32_t a4, std::uint32_t a5, std::uint32_t a6, std::uint32_t a7, std::uint32_t a8) { (void)core; (void)syscall_num; (void)a1; (void)a2; (void)a3; (void)a4; (void)a5; (void)a6; (void)a7; (void)a8; QVector data; read_io(1, data, (std::uint32_t)data.size(), false); result = 0; return 0; } int OsSyscallExceptionHandler::do_spim_sbrk(std::uint32_t &result, Core *core, std::uint32_t syscall_num, std::uint32_t a1, std::uint32_t a2, std::uint32_t a3, std::uint32_t a4, std::uint32_t a5, std::uint32_t a6, std::uint32_t a7, std::uint32_t a8) { (void)core; (void)syscall_num; (void)a1; (void)a2; (void)a3; (void)a4; (void)a5; (void)a6; (void)a7; (void)a8; std::uint32_t increment = a1; increment = (increment + 15) & ~15;; brk_limit = (brk_limit + 15) & ~15;; result = brk_limit; brk_limit += increment; return 0; } int OsSyscallExceptionHandler::do_spim_exit(std::uint32_t &result, Core *core, std::uint32_t syscall_num, std::uint32_t a1, std::uint32_t a2, std::uint32_t a3, std::uint32_t a4, std::uint32_t a5, std::uint32_t a6, std::uint32_t a7, std::uint32_t a8) { (void)core; (void)syscall_num; (void)a1; (void)a2; (void)a3; (void)a4; (void)a5; (void)a6; (void)a7; (void)a8; return do_sys_exit(result, core, syscall_num, 0, a2, a3, a4, a5, a6, a7, a8); } int OsSyscallExceptionHandler::do_spim_print_character(std::uint32_t &result, Core *core, std::uint32_t syscall_num, std::uint32_t a1, std::uint32_t a2, std::uint32_t a3, std::uint32_t a4, std::uint32_t a5, std::uint32_t a6, std::uint32_t a7, std::uint32_t a8) { (void)core; (void)syscall_num; (void)a1; (void)a2; (void)a3; (void)a4; (void)a5; (void)a6; (void)a7; (void)a8; result = 0; return 0; } int OsSyscallExceptionHandler::do_spim_read_character(std::uint32_t &result, Core *core, std::uint32_t syscall_num, std::uint32_t a1, std::uint32_t a2, std::uint32_t a3, std::uint32_t a4, std::uint32_t a5, std::uint32_t a6, std::uint32_t a7, std::uint32_t a8) { (void)core; (void)syscall_num; (void)a1; (void)a2; (void)a3; (void)a4; (void)a5; (void)a6; (void)a7; (void)a8; result = 0; return 0; }