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58908ef603
No code change, only move code from main.c to mips/cpu_loop.c. Include mips/cpu_loop.c in mips64/cpu_loop.c to avoid to duplicate code. Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20180411185651.21351-8-laurent@vivier.eu>
750 lines
27 KiB
C
750 lines
27 KiB
C
/*
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* qemu user cpu loop
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*
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* Copyright (c) 2003-2008 Fabrice Bellard
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "qemu/osdep.h"
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#include "qemu.h"
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#include "cpu_loop-common.h"
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#include "elf.h"
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# ifdef TARGET_ABI_MIPSO32
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# define MIPS_SYS(name, args) args,
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static const uint8_t mips_syscall_args[] = {
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MIPS_SYS(sys_syscall , 8) /* 4000 */
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MIPS_SYS(sys_exit , 1)
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MIPS_SYS(sys_fork , 0)
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MIPS_SYS(sys_read , 3)
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MIPS_SYS(sys_write , 3)
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MIPS_SYS(sys_open , 3) /* 4005 */
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MIPS_SYS(sys_close , 1)
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MIPS_SYS(sys_waitpid , 3)
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MIPS_SYS(sys_creat , 2)
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MIPS_SYS(sys_link , 2)
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MIPS_SYS(sys_unlink , 1) /* 4010 */
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MIPS_SYS(sys_execve , 0)
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MIPS_SYS(sys_chdir , 1)
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MIPS_SYS(sys_time , 1)
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MIPS_SYS(sys_mknod , 3)
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MIPS_SYS(sys_chmod , 2) /* 4015 */
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MIPS_SYS(sys_lchown , 3)
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MIPS_SYS(sys_ni_syscall , 0)
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MIPS_SYS(sys_ni_syscall , 0) /* was sys_stat */
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MIPS_SYS(sys_lseek , 3)
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MIPS_SYS(sys_getpid , 0) /* 4020 */
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MIPS_SYS(sys_mount , 5)
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MIPS_SYS(sys_umount , 1)
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MIPS_SYS(sys_setuid , 1)
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MIPS_SYS(sys_getuid , 0)
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MIPS_SYS(sys_stime , 1) /* 4025 */
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MIPS_SYS(sys_ptrace , 4)
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MIPS_SYS(sys_alarm , 1)
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MIPS_SYS(sys_ni_syscall , 0) /* was sys_fstat */
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MIPS_SYS(sys_pause , 0)
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MIPS_SYS(sys_utime , 2) /* 4030 */
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MIPS_SYS(sys_ni_syscall , 0)
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MIPS_SYS(sys_ni_syscall , 0)
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MIPS_SYS(sys_access , 2)
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MIPS_SYS(sys_nice , 1)
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MIPS_SYS(sys_ni_syscall , 0) /* 4035 */
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MIPS_SYS(sys_sync , 0)
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MIPS_SYS(sys_kill , 2)
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MIPS_SYS(sys_rename , 2)
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MIPS_SYS(sys_mkdir , 2)
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MIPS_SYS(sys_rmdir , 1) /* 4040 */
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MIPS_SYS(sys_dup , 1)
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MIPS_SYS(sys_pipe , 0)
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MIPS_SYS(sys_times , 1)
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MIPS_SYS(sys_ni_syscall , 0)
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MIPS_SYS(sys_brk , 1) /* 4045 */
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MIPS_SYS(sys_setgid , 1)
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MIPS_SYS(sys_getgid , 0)
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MIPS_SYS(sys_ni_syscall , 0) /* was signal(2) */
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MIPS_SYS(sys_geteuid , 0)
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MIPS_SYS(sys_getegid , 0) /* 4050 */
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MIPS_SYS(sys_acct , 0)
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MIPS_SYS(sys_umount2 , 2)
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MIPS_SYS(sys_ni_syscall , 0)
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MIPS_SYS(sys_ioctl , 3)
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MIPS_SYS(sys_fcntl , 3) /* 4055 */
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MIPS_SYS(sys_ni_syscall , 2)
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MIPS_SYS(sys_setpgid , 2)
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MIPS_SYS(sys_ni_syscall , 0)
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MIPS_SYS(sys_olduname , 1)
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MIPS_SYS(sys_umask , 1) /* 4060 */
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MIPS_SYS(sys_chroot , 1)
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MIPS_SYS(sys_ustat , 2)
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MIPS_SYS(sys_dup2 , 2)
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MIPS_SYS(sys_getppid , 0)
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MIPS_SYS(sys_getpgrp , 0) /* 4065 */
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MIPS_SYS(sys_setsid , 0)
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MIPS_SYS(sys_sigaction , 3)
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MIPS_SYS(sys_sgetmask , 0)
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MIPS_SYS(sys_ssetmask , 1)
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MIPS_SYS(sys_setreuid , 2) /* 4070 */
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MIPS_SYS(sys_setregid , 2)
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MIPS_SYS(sys_sigsuspend , 0)
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MIPS_SYS(sys_sigpending , 1)
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MIPS_SYS(sys_sethostname , 2)
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MIPS_SYS(sys_setrlimit , 2) /* 4075 */
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MIPS_SYS(sys_getrlimit , 2)
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MIPS_SYS(sys_getrusage , 2)
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MIPS_SYS(sys_gettimeofday, 2)
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MIPS_SYS(sys_settimeofday, 2)
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MIPS_SYS(sys_getgroups , 2) /* 4080 */
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MIPS_SYS(sys_setgroups , 2)
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MIPS_SYS(sys_ni_syscall , 0) /* old_select */
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MIPS_SYS(sys_symlink , 2)
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MIPS_SYS(sys_ni_syscall , 0) /* was sys_lstat */
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MIPS_SYS(sys_readlink , 3) /* 4085 */
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MIPS_SYS(sys_uselib , 1)
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MIPS_SYS(sys_swapon , 2)
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MIPS_SYS(sys_reboot , 3)
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MIPS_SYS(old_readdir , 3)
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MIPS_SYS(old_mmap , 6) /* 4090 */
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MIPS_SYS(sys_munmap , 2)
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MIPS_SYS(sys_truncate , 2)
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MIPS_SYS(sys_ftruncate , 2)
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MIPS_SYS(sys_fchmod , 2)
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MIPS_SYS(sys_fchown , 3) /* 4095 */
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MIPS_SYS(sys_getpriority , 2)
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MIPS_SYS(sys_setpriority , 3)
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MIPS_SYS(sys_ni_syscall , 0)
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MIPS_SYS(sys_statfs , 2)
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MIPS_SYS(sys_fstatfs , 2) /* 4100 */
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MIPS_SYS(sys_ni_syscall , 0) /* was ioperm(2) */
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MIPS_SYS(sys_socketcall , 2)
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MIPS_SYS(sys_syslog , 3)
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MIPS_SYS(sys_setitimer , 3)
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MIPS_SYS(sys_getitimer , 2) /* 4105 */
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MIPS_SYS(sys_newstat , 2)
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MIPS_SYS(sys_newlstat , 2)
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MIPS_SYS(sys_newfstat , 2)
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MIPS_SYS(sys_uname , 1)
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MIPS_SYS(sys_ni_syscall , 0) /* 4110 was iopl(2) */
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MIPS_SYS(sys_vhangup , 0)
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MIPS_SYS(sys_ni_syscall , 0) /* was sys_idle() */
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MIPS_SYS(sys_ni_syscall , 0) /* was sys_vm86 */
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MIPS_SYS(sys_wait4 , 4)
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MIPS_SYS(sys_swapoff , 1) /* 4115 */
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MIPS_SYS(sys_sysinfo , 1)
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MIPS_SYS(sys_ipc , 6)
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MIPS_SYS(sys_fsync , 1)
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MIPS_SYS(sys_sigreturn , 0)
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MIPS_SYS(sys_clone , 6) /* 4120 */
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MIPS_SYS(sys_setdomainname, 2)
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MIPS_SYS(sys_newuname , 1)
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MIPS_SYS(sys_ni_syscall , 0) /* sys_modify_ldt */
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MIPS_SYS(sys_adjtimex , 1)
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MIPS_SYS(sys_mprotect , 3) /* 4125 */
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MIPS_SYS(sys_sigprocmask , 3)
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MIPS_SYS(sys_ni_syscall , 0) /* was create_module */
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MIPS_SYS(sys_init_module , 5)
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MIPS_SYS(sys_delete_module, 1)
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MIPS_SYS(sys_ni_syscall , 0) /* 4130 was get_kernel_syms */
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MIPS_SYS(sys_quotactl , 0)
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MIPS_SYS(sys_getpgid , 1)
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MIPS_SYS(sys_fchdir , 1)
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MIPS_SYS(sys_bdflush , 2)
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MIPS_SYS(sys_sysfs , 3) /* 4135 */
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MIPS_SYS(sys_personality , 1)
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MIPS_SYS(sys_ni_syscall , 0) /* for afs_syscall */
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MIPS_SYS(sys_setfsuid , 1)
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MIPS_SYS(sys_setfsgid , 1)
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MIPS_SYS(sys_llseek , 5) /* 4140 */
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MIPS_SYS(sys_getdents , 3)
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MIPS_SYS(sys_select , 5)
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MIPS_SYS(sys_flock , 2)
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MIPS_SYS(sys_msync , 3)
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MIPS_SYS(sys_readv , 3) /* 4145 */
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MIPS_SYS(sys_writev , 3)
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MIPS_SYS(sys_cacheflush , 3)
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MIPS_SYS(sys_cachectl , 3)
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MIPS_SYS(sys_sysmips , 4)
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MIPS_SYS(sys_ni_syscall , 0) /* 4150 */
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MIPS_SYS(sys_getsid , 1)
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MIPS_SYS(sys_fdatasync , 0)
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MIPS_SYS(sys_sysctl , 1)
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MIPS_SYS(sys_mlock , 2)
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MIPS_SYS(sys_munlock , 2) /* 4155 */
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MIPS_SYS(sys_mlockall , 1)
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MIPS_SYS(sys_munlockall , 0)
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MIPS_SYS(sys_sched_setparam, 2)
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MIPS_SYS(sys_sched_getparam, 2)
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MIPS_SYS(sys_sched_setscheduler, 3) /* 4160 */
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MIPS_SYS(sys_sched_getscheduler, 1)
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MIPS_SYS(sys_sched_yield , 0)
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MIPS_SYS(sys_sched_get_priority_max, 1)
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MIPS_SYS(sys_sched_get_priority_min, 1)
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MIPS_SYS(sys_sched_rr_get_interval, 2) /* 4165 */
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MIPS_SYS(sys_nanosleep, 2)
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MIPS_SYS(sys_mremap , 5)
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MIPS_SYS(sys_accept , 3)
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MIPS_SYS(sys_bind , 3)
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MIPS_SYS(sys_connect , 3) /* 4170 */
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MIPS_SYS(sys_getpeername , 3)
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MIPS_SYS(sys_getsockname , 3)
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MIPS_SYS(sys_getsockopt , 5)
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MIPS_SYS(sys_listen , 2)
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MIPS_SYS(sys_recv , 4) /* 4175 */
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MIPS_SYS(sys_recvfrom , 6)
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MIPS_SYS(sys_recvmsg , 3)
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MIPS_SYS(sys_send , 4)
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MIPS_SYS(sys_sendmsg , 3)
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MIPS_SYS(sys_sendto , 6) /* 4180 */
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MIPS_SYS(sys_setsockopt , 5)
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MIPS_SYS(sys_shutdown , 2)
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MIPS_SYS(sys_socket , 3)
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MIPS_SYS(sys_socketpair , 4)
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MIPS_SYS(sys_setresuid , 3) /* 4185 */
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MIPS_SYS(sys_getresuid , 3)
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MIPS_SYS(sys_ni_syscall , 0) /* was sys_query_module */
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MIPS_SYS(sys_poll , 3)
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MIPS_SYS(sys_nfsservctl , 3)
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MIPS_SYS(sys_setresgid , 3) /* 4190 */
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MIPS_SYS(sys_getresgid , 3)
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MIPS_SYS(sys_prctl , 5)
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MIPS_SYS(sys_rt_sigreturn, 0)
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MIPS_SYS(sys_rt_sigaction, 4)
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MIPS_SYS(sys_rt_sigprocmask, 4) /* 4195 */
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MIPS_SYS(sys_rt_sigpending, 2)
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MIPS_SYS(sys_rt_sigtimedwait, 4)
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MIPS_SYS(sys_rt_sigqueueinfo, 3)
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MIPS_SYS(sys_rt_sigsuspend, 0)
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MIPS_SYS(sys_pread64 , 6) /* 4200 */
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MIPS_SYS(sys_pwrite64 , 6)
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MIPS_SYS(sys_chown , 3)
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MIPS_SYS(sys_getcwd , 2)
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MIPS_SYS(sys_capget , 2)
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MIPS_SYS(sys_capset , 2) /* 4205 */
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MIPS_SYS(sys_sigaltstack , 2)
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MIPS_SYS(sys_sendfile , 4)
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MIPS_SYS(sys_ni_syscall , 0)
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MIPS_SYS(sys_ni_syscall , 0)
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MIPS_SYS(sys_mmap2 , 6) /* 4210 */
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MIPS_SYS(sys_truncate64 , 4)
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MIPS_SYS(sys_ftruncate64 , 4)
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MIPS_SYS(sys_stat64 , 2)
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MIPS_SYS(sys_lstat64 , 2)
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MIPS_SYS(sys_fstat64 , 2) /* 4215 */
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MIPS_SYS(sys_pivot_root , 2)
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MIPS_SYS(sys_mincore , 3)
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MIPS_SYS(sys_madvise , 3)
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MIPS_SYS(sys_getdents64 , 3)
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MIPS_SYS(sys_fcntl64 , 3) /* 4220 */
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MIPS_SYS(sys_ni_syscall , 0)
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MIPS_SYS(sys_gettid , 0)
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MIPS_SYS(sys_readahead , 5)
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MIPS_SYS(sys_setxattr , 5)
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MIPS_SYS(sys_lsetxattr , 5) /* 4225 */
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MIPS_SYS(sys_fsetxattr , 5)
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MIPS_SYS(sys_getxattr , 4)
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MIPS_SYS(sys_lgetxattr , 4)
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MIPS_SYS(sys_fgetxattr , 4)
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MIPS_SYS(sys_listxattr , 3) /* 4230 */
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MIPS_SYS(sys_llistxattr , 3)
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MIPS_SYS(sys_flistxattr , 3)
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MIPS_SYS(sys_removexattr , 2)
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MIPS_SYS(sys_lremovexattr, 2)
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MIPS_SYS(sys_fremovexattr, 2) /* 4235 */
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MIPS_SYS(sys_tkill , 2)
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MIPS_SYS(sys_sendfile64 , 5)
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MIPS_SYS(sys_futex , 6)
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MIPS_SYS(sys_sched_setaffinity, 3)
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MIPS_SYS(sys_sched_getaffinity, 3) /* 4240 */
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MIPS_SYS(sys_io_setup , 2)
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MIPS_SYS(sys_io_destroy , 1)
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MIPS_SYS(sys_io_getevents, 5)
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MIPS_SYS(sys_io_submit , 3)
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MIPS_SYS(sys_io_cancel , 3) /* 4245 */
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MIPS_SYS(sys_exit_group , 1)
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MIPS_SYS(sys_lookup_dcookie, 3)
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MIPS_SYS(sys_epoll_create, 1)
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MIPS_SYS(sys_epoll_ctl , 4)
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MIPS_SYS(sys_epoll_wait , 3) /* 4250 */
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MIPS_SYS(sys_remap_file_pages, 5)
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MIPS_SYS(sys_set_tid_address, 1)
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MIPS_SYS(sys_restart_syscall, 0)
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MIPS_SYS(sys_fadvise64_64, 7)
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MIPS_SYS(sys_statfs64 , 3) /* 4255 */
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MIPS_SYS(sys_fstatfs64 , 2)
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MIPS_SYS(sys_timer_create, 3)
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MIPS_SYS(sys_timer_settime, 4)
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MIPS_SYS(sys_timer_gettime, 2)
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MIPS_SYS(sys_timer_getoverrun, 1) /* 4260 */
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MIPS_SYS(sys_timer_delete, 1)
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MIPS_SYS(sys_clock_settime, 2)
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MIPS_SYS(sys_clock_gettime, 2)
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MIPS_SYS(sys_clock_getres, 2)
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MIPS_SYS(sys_clock_nanosleep, 4) /* 4265 */
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MIPS_SYS(sys_tgkill , 3)
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MIPS_SYS(sys_utimes , 2)
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MIPS_SYS(sys_mbind , 4)
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MIPS_SYS(sys_ni_syscall , 0) /* sys_get_mempolicy */
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MIPS_SYS(sys_ni_syscall , 0) /* 4270 sys_set_mempolicy */
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MIPS_SYS(sys_mq_open , 4)
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MIPS_SYS(sys_mq_unlink , 1)
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MIPS_SYS(sys_mq_timedsend, 5)
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MIPS_SYS(sys_mq_timedreceive, 5)
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MIPS_SYS(sys_mq_notify , 2) /* 4275 */
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MIPS_SYS(sys_mq_getsetattr, 3)
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MIPS_SYS(sys_ni_syscall , 0) /* sys_vserver */
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MIPS_SYS(sys_waitid , 4)
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MIPS_SYS(sys_ni_syscall , 0) /* available, was setaltroot */
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MIPS_SYS(sys_add_key , 5)
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MIPS_SYS(sys_request_key, 4)
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MIPS_SYS(sys_keyctl , 5)
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MIPS_SYS(sys_set_thread_area, 1)
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MIPS_SYS(sys_inotify_init, 0)
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MIPS_SYS(sys_inotify_add_watch, 3) /* 4285 */
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MIPS_SYS(sys_inotify_rm_watch, 2)
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MIPS_SYS(sys_migrate_pages, 4)
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MIPS_SYS(sys_openat, 4)
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MIPS_SYS(sys_mkdirat, 3)
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MIPS_SYS(sys_mknodat, 4) /* 4290 */
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MIPS_SYS(sys_fchownat, 5)
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MIPS_SYS(sys_futimesat, 3)
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MIPS_SYS(sys_fstatat64, 4)
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MIPS_SYS(sys_unlinkat, 3)
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MIPS_SYS(sys_renameat, 4) /* 4295 */
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MIPS_SYS(sys_linkat, 5)
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MIPS_SYS(sys_symlinkat, 3)
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MIPS_SYS(sys_readlinkat, 4)
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MIPS_SYS(sys_fchmodat, 3)
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MIPS_SYS(sys_faccessat, 3) /* 4300 */
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MIPS_SYS(sys_pselect6, 6)
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MIPS_SYS(sys_ppoll, 5)
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MIPS_SYS(sys_unshare, 1)
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MIPS_SYS(sys_splice, 6)
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MIPS_SYS(sys_sync_file_range, 7) /* 4305 */
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MIPS_SYS(sys_tee, 4)
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MIPS_SYS(sys_vmsplice, 4)
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MIPS_SYS(sys_move_pages, 6)
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MIPS_SYS(sys_set_robust_list, 2)
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MIPS_SYS(sys_get_robust_list, 3) /* 4310 */
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MIPS_SYS(sys_kexec_load, 4)
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MIPS_SYS(sys_getcpu, 3)
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MIPS_SYS(sys_epoll_pwait, 6)
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MIPS_SYS(sys_ioprio_set, 3)
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MIPS_SYS(sys_ioprio_get, 2)
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MIPS_SYS(sys_utimensat, 4)
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MIPS_SYS(sys_signalfd, 3)
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MIPS_SYS(sys_ni_syscall, 0) /* was timerfd */
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MIPS_SYS(sys_eventfd, 1)
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MIPS_SYS(sys_fallocate, 6) /* 4320 */
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MIPS_SYS(sys_timerfd_create, 2)
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MIPS_SYS(sys_timerfd_gettime, 2)
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MIPS_SYS(sys_timerfd_settime, 4)
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MIPS_SYS(sys_signalfd4, 4)
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MIPS_SYS(sys_eventfd2, 2) /* 4325 */
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MIPS_SYS(sys_epoll_create1, 1)
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MIPS_SYS(sys_dup3, 3)
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MIPS_SYS(sys_pipe2, 2)
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MIPS_SYS(sys_inotify_init1, 1)
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MIPS_SYS(sys_preadv, 5) /* 4330 */
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MIPS_SYS(sys_pwritev, 5)
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MIPS_SYS(sys_rt_tgsigqueueinfo, 4)
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MIPS_SYS(sys_perf_event_open, 5)
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MIPS_SYS(sys_accept4, 4)
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MIPS_SYS(sys_recvmmsg, 5) /* 4335 */
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MIPS_SYS(sys_fanotify_init, 2)
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MIPS_SYS(sys_fanotify_mark, 6)
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MIPS_SYS(sys_prlimit64, 4)
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MIPS_SYS(sys_name_to_handle_at, 5)
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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 */
|
|
|
|
static int do_store_exclusive(CPUMIPSState *env)
|
|
{
|
|
target_ulong addr;
|
|
target_ulong page_addr;
|
|
target_ulong val;
|
|
int flags;
|
|
int segv = 0;
|
|
int reg;
|
|
int d;
|
|
|
|
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;
|
|
if (d) {
|
|
segv = get_user_s64(val, addr);
|
|
} else {
|
|
segv = get_user_s32(val, addr);
|
|
}
|
|
if (!segv) {
|
|
if (val != env->llval) {
|
|
env->active_tc.gpr[reg] = 0;
|
|
} else {
|
|
if (d) {
|
|
segv = put_user_u64(env->llnewval, addr);
|
|
} else {
|
|
segv = put_user_u32(env->llnewval, addr);
|
|
}
|
|
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)
|
|
{
|
|
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 = CPU(mips_env_get_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:
|
|
{
|
|
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);
|
|
}
|
|
}
|
|
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);
|
|
}
|
|
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;
|
|
/* 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_GET_CPU(env);
|
|
TaskState *ts = cpu->opaque;
|
|
struct image_info *info = ts->info;
|
|
int i;
|
|
|
|
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;
|
|
}
|
|
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);
|
|
}
|
|
}
|