linux-user: add loading ELFs for e2kg

linux-user/e2k/cpu_loop.c

@@ -0,0 +1,55 @@
+/*
+ *  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/help-texts.h"
+#include "qemu.h"
+#include "user-internals.h"
+#include "signal-common.h"
+#include "user-mmap.h"
+#include "cpu_loop-common.h"
+
+void cpu_loop(CPUE2KState *env)
+{
+    CPUState *cs = env_cpu(env);
+    int trapnr, n, sig;
+    target_siginfo_t info;
+    target_ulong addr;
+    abi_long ret;
+
+    while (1) {
+        cpu_exec_start(cs);
+        trapnr = cpu_exec(cs);
+        cpu_exec_end(cs);
+        process_queued_cpu_work(cs);
+
+        switch (trapnr) {
+        default:
+            fprintf(stderr, "Unhandled trap: 0x%x\n", trapnr);
+            cpu_dump_state(cs, stderr, 0);
+            exit(EXIT_FAILURE);
+        }
+        process_pending_signals (env);
+    }
+}
+
+void target_cpu_copy_regs(CPUE2KState *env, struct target_pt_regs *regs)
+{
+    // TODO
+}

linux-user/e2k/sockbits.h

@@ -0,0 +1 @@
+#include "../generic/sockbits.h" 

linux-user/e2k/syscall_nr.h

@@ -0,0 +1,405 @@
+/*
+ * This file contains the system call numbers.
+ */
+#ifndef E2K_SYSCALL_NR_H
+#define E2K_SYSCALL_NR_H
+
+#define TARGET_NR_restart_syscall      0
+#define TARGET_NR_exit		  1
+#define TARGET_NR_fork		  2
+#define TARGET_NR_read		  3
+#define TARGET_NR_write		  4
+#define TARGET_NR_open		  5
+#define TARGET_NR_close		  6
+#define TARGET_NR_waitpid		  7
+#define TARGET_NR_creat		  8
+#define TARGET_NR_link		  9
+#define TARGET_NR_unlink		 10
+#define TARGET_NR_execve		 11
+#define TARGET_NR_chdir		 12
+#define TARGET_NR_time		 13
+#define TARGET_NR_mknod		 14
+#define TARGET_NR_chmod		 15
+#define TARGET_NR_lchown		 16
+#define TARGET_NR_break		 17
+#define TARGET_NR_oldstat		 18
+#define TARGET_NR_lseek		 19
+#define TARGET_NR_getpid		 20
+#define TARGET_NR_mount		 21
+#define TARGET_NR_umount		 22
+#define TARGET_NR_setuid		 23
+#define TARGET_NR_getuid		 24
+#define TARGET_NR_stime		 25
+#define TARGET_NR_ptrace		 26
+#define TARGET_NR_alarm		 27
+#define TARGET_NR_oldfstat		 28
+#define TARGET_NR_pause		 29
+#define TARGET_NR_utime		 30
+#define TARGET_NR_stty		 31
+#define TARGET_NR_gtty		 32
+#define TARGET_NR_access		 33
+#define TARGET_NR_nice		 34
+#define TARGET_NR_ftime		 35
+#define TARGET_NR_sync		 36
+#define TARGET_NR_kill		 37
+#define TARGET_NR_rename		 38
+#define TARGET_NR_mkdir		 39
+#define TARGET_NR_rmdir		 40
+#define TARGET_NR_dup		 41
+#define TARGET_NR_pipe		 42
+#define TARGET_NR_times		 43
+#define TARGET_NR_prof		 44
+#define TARGET_NR_brk		 45
+#define TARGET_NR_setgid		 46
+#define TARGET_NR_getgid		 47
+#define TARGET_NR_signal		 48
+#define TARGET_NR_geteuid		 49
+#define TARGET_NR_getegid		 50
+#define TARGET_NR_acct		 51
+#define TARGET_NR_umount2		 52
+#define TARGET_NR_lock		 53
+#define TARGET_NR_ioctl		 54
+#define TARGET_NR_fcntl		 55
+#define TARGET_NR_mpx		 56
+#define TARGET_NR_setpgid		 57
+#define TARGET_NR_ulimit		 58
+#define TARGET_NR_oldolduname	 59
+#define TARGET_NR_umask		 60
+#define TARGET_NR_chroot		 61
+#define TARGET_NR_ustat		 62
+#define TARGET_NR_dup2		 63
+#define TARGET_NR_getppid		 64
+#define TARGET_NR_getpgrp		 65
+#define TARGET_NR_setsid		 66
+#define TARGET_NR_sigaction		 67
+#define TARGET_NR_sgetmask		 68
+#define TARGET_NR_ssetmask		 69
+#define TARGET_NR_setreuid		 70
+#define TARGET_NR_setregid		 71
+#define TARGET_NR_sigsuspend		 72
+#define TARGET_NR_sigpending		 73
+#define TARGET_NR_sethostname	 74
+#define TARGET_NR_setrlimit		 75
+#define TARGET_NR_getrlimit		 76   /* Back compatible 2Gig limited rlimit */
+#define TARGET_NR_getrusage		 77
+#define TARGET_NR_gettimeofday	 78
+#define TARGET_NR_settimeofday	 79
+#define TARGET_NR_getgroups		 80
+#define TARGET_NR_setgroups		 81
+#define TARGET_NR_select		 82
+#define TARGET_NR_symlink		 83
+#define TARGET_NR_oldlstat		 84
+#define TARGET_NR_readlink		 85
+#define TARGET_NR_uselib		 86
+#define TARGET_NR_swapon		 87
+#define TARGET_NR_reboot		 88
+#define TARGET_NR_readdir		 89
+#define TARGET_NR_mmap		 90
+#define TARGET_NR_munmap		 91
+#define TARGET_NR_truncate		 92
+#define TARGET_NR_ftruncate		 93
+#define TARGET_NR_fchmod		 94
+#define TARGET_NR_fchown		 95
+#define TARGET_NR_getpriority	 96
+#define TARGET_NR_setpriority	 97
+#define TARGET_NR_profil		 98
+#define TARGET_NR_statfs		 99
+#define TARGET_NR_fstatfs		100
+#define TARGET_NR_ioperm		101
+#define TARGET_NR_socketcall		102
+#define TARGET_NR_syslog		103
+#define TARGET_NR_setitimer		104
+#define TARGET_NR_getitimer		105
+#define TARGET_NR_stat		106
+#define TARGET_NR_lstat		107
+#define TARGET_NR_fstat		108
+#define TARGET_NR_olduname		109
+#define TARGET_NR_iopl		110
+#define TARGET_NR_vhangup		111
+#define TARGET_NR_idle		112
+#define TARGET_NR_vm86old		113
+#define TARGET_NR_wait4		114
+#define TARGET_NR_swapoff		115
+#define TARGET_NR_sysinfo		116
+#define TARGET_NR_ipc		117
+#define TARGET_NR_fsync		118
+#define TARGET_NR_sigreturn		119
+#define TARGET_NR_clone		120
+#define TARGET_NR_setdomainname	121
+#define TARGET_NR_uname		122
+#define TARGET_NR_modify_ldt		123
+#define TARGET_NR_adjtimex		124
+#define TARGET_NR_mprotect		125
+#define TARGET_NR_sigprocmask	126
+#define TARGET_NR_create_module	127
+#define TARGET_NR_init_module	128
+#define TARGET_NR_delete_module	129
+#define TARGET_NR_get_kernel_syms	130
+#define TARGET_NR_quotactl		131
+#define TARGET_NR_getpgid		132
+#define TARGET_NR_fchdir		133
+#define TARGET_NR_bdflush		134
+#define TARGET_NR_sysfs		135
+#define TARGET_NR_personality	136
+#define TARGET_NR_afs_syscall	137 /* Syscall for Andrew File System */
+#define TARGET_NR_setfsuid		138
+#define TARGET_NR_setfsgid		139
+#define TARGET_NR__llseek		140
+#define TARGET_NR_getdents		141
+#define TARGET_NR__newselect		142
+#define TARGET_NR_flock		143
+#define TARGET_NR_msync		144
+#define TARGET_NR_readv		145
+#define TARGET_NR_writev		146
+#define TARGET_NR_getsid		147
+#define TARGET_NR_fdatasync		148
+#define TARGET_NR__sysctl		149
+#define TARGET_NR_mlock		150
+#define TARGET_NR_munlock		151
+#define TARGET_NR_mlockall		152
+#define TARGET_NR_munlockall		153
+#define TARGET_NR_sched_setparam		154
+#define TARGET_NR_sched_getparam		155
+#define TARGET_NR_sched_setscheduler		156
+#define TARGET_NR_sched_getscheduler		157
+#define TARGET_NR_sched_yield		158
+#define TARGET_NR_sched_get_priority_max	159
+#define TARGET_NR_sched_get_priority_min	160
+#define TARGET_NR_sched_rr_get_interval	161
+#define TARGET_NR_nanosleep		162
+#define TARGET_NR_mremap		163
+#define TARGET_NR_setresuid		164
+#define TARGET_NR_getresuid		165
+#define TARGET_NR_vm86		166
+#define TARGET_NR_query_module	167
+#define TARGET_NR_poll		168
+#define TARGET_NR_nfsservctl		169
+#define TARGET_NR_setresgid		170
+#define TARGET_NR_getresgid		171
+#define TARGET_NR_prctl              172
+#define TARGET_NR_rt_sigreturn	173
+#define TARGET_NR_rt_sigaction	174
+#define TARGET_NR_rt_sigprocmask	175
+#define TARGET_NR_rt_sigpending	176
+#define TARGET_NR_rt_sigtimedwait	177
+#define TARGET_NR_rt_sigqueueinfo	178
+#define TARGET_NR_rt_sigsuspend	179
+#define TARGET_NR_pread		180
+#define TARGET_NR_pwrite		181
+#define TARGET_NR_chown		182
+#define TARGET_NR_getcwd		183
+#define TARGET_NR_capget		184
+#define TARGET_NR_capset		185
+#define TARGET_NR_sigaltstack	186
+#define TARGET_NR_sendfile		187
+#define TARGET_NR_getpmsg		188	/* some people actually want streams */
+#define TARGET_NR_putpmsg		189	/* some people actually want streams */
+#define TARGET_NR_vfork		190
+#define TARGET_NR_ugetrlimit		191	/* SuS compliant getrlimit */
+#define TARGET_NR_mmap2		192
+#define TARGET_NR_truncate64		193
+#define TARGET_NR_ftruncate64	194
+#define TARGET_NR_stat64		195
+#define TARGET_NR_lstat64		196
+#define TARGET_NR_fstat64		197
+#define TARGET_NR_lchown32		198
+#define TARGET_NR_getuid32		199
+#define TARGET_NR_getgid32		200
+#define TARGET_NR_geteuid32		201
+#define TARGET_NR_getegid32		202
+#define TARGET_NR_setreuid32		203
+#define TARGET_NR_setregid32		204
+#define TARGET_NR_getgroups32	205
+#define TARGET_NR_setgroups32	206
+#define TARGET_NR_fchown32		207
+#define TARGET_NR_setresuid32	208
+#define TARGET_NR_getresuid32	209
+#define TARGET_NR_setresgid32	210
+#define TARGET_NR_getresgid32	211
+#define TARGET_NR_chown32		212
+#define TARGET_NR_setuid32		213
+#define TARGET_NR_setgid32		214
+#define TARGET_NR_setfsuid32		215
+#define TARGET_NR_setfsgid32		216
+#define TARGET_NR_pivot_root		217
+#define TARGET_NR_mincore		218
+#define TARGET_NR_madvise		219
+#define TARGET_NR_madvise1		219	/* delete when C lib stub is removed */
+#define TARGET_NR_getdents64		220
+#define TARGET_NR_fcntl64		221
+#define TARGET_NR_core		222	/* for analys kernel core */
+#define TARGET_NR_macctl		223	/* MCST trust linux	*/
+#define TARGET_NR_newfstatat		224
+#define TARGET_NR_emergency		225
+#define TARGET_NR_e2k_sigsetjmp	226	/* setjmp  e2k specific */
+#define TARGET_NR_e2k_longjmp	227	/* longjmp e2k specific */
+#define TARGET_NR_e2k_syswork	228	/* e2k_syswork */
+#define	TARGET_NR_clone2		229
+#define TARGET_NR_e2k_longjmp2	230	/* Second Edition */
+#define TARGET_NR_soft_debug		231
+#define TARGET_NR_setxattr		232
+#define TARGET_NR_lsetxattr		233
+#define TARGET_NR_fsetxattr		234
+#define TARGET_NR_getxattr		235
+#define TARGET_NR_lgetxattr		236
+#define TARGET_NR_fgetxattr		237
+#define TARGET_NR_listxattr		238
+#define TARGET_NR_llistxattr		239
+#define TARGET_NR_flistxattr		240
+#define TARGET_NR_removexattr	241
+#define TARGET_NR_lremovexattr	242
+#define TARGET_NR_fremovexattr	243
+#define TARGET_NR_gettid		244
+#define TARGET_NR_readahead		245
+#define TARGET_NR_tkill		246
+#define TARGET_NR_sendfile64		247
+#define TARGET_NR_futex		248
+#define TARGET_NR_sched_setaffinity	249
+#define TARGET_NR_sched_getaffinity	250
+#define TARGET_NR_pipe2		251
+#define TARGET_NR_set_backtrace	252
+#define TARGET_NR_get_backtrace	253
+#define TARGET_NR_access_hw_stacks	254
+#define	TARGET_NR_el_posix		255
+/*
+ * reserved for update of kernel source codes
+ */
+#define TARGET_NR_reserved6		256
+#define TARGET_NR_reserved7		257
+#define TARGET_NR_reserved8		258
+
+#define TARGET_NR_set_tid_address	259
+#define	TARGET_NR_el_binary		260
+#define TARGET_NR_timer_create       261
+#define TARGET_NR_timer_settime	262
+#define TARGET_NR_timer_gettime	263
+#define TARGET_NR_timer_getoverrun	264
+#define TARGET_NR_timer_delete	265
+#define TARGET_NR_clock_settime	266
+#define TARGET_NR_clock_gettime	267
+#define TARGET_NR_clock_getres	268
+#define TARGET_NR_clock_nanosleep	269
+/*
+ * reserved for update of kernel source codes
+ */
+#define TARGET_NR_reserved9		270
+#define TARGET_NR_reserved10		271
+#define TARGET_NR_reserved11		272
+#define TARGET_NR_reserved12		273
+#define TARGET_NR_reserved13		274
+#define TARGET_NR_reserved14		275
+#define TARGET_NR_reserved15		276
+#define TARGET_NR_reserved16		277
+#define TARGET_NR_reserved17		278
+#define TARGET_NR_reserved18		279
+#define TARGET_NR_reserved19		280
+#define TARGET_NR_reserved20		281
+#define TARGET_NR_reserved21		282
+#define TARGET_NR_reserved22		283
+#define TARGET_NR_reserved23		284
+#define TARGET_NR_reserved24		285
+#define TARGET_NR_reserved25		286
+
+#define TARGET_NR_sched_setattr	287
+#define TARGET_NR_sched_getattr	288
+
+#define TARGET_NR_ioprio_set		289
+#define TARGET_NR_ioprio_get		290
+#define TARGET_NR_inotify_init	291
+#define TARGET_NR_inotify_add_watch	292
+#define TARGET_NR_inotify_rm_watch	293
+
+#define TARGET_NR_io_setup           294
+#define TARGET_NR_io_destroy         295
+#define TARGET_NR_io_getevents       296
+#define TARGET_NR_io_submit          297
+#define TARGET_NR_io_cancel          298
+#define TARGET_NR_fadvise64          299
+
+#define TARGET_NR_exit_group         300
+#define TARGET_NR_lookup_dcookie     301
+#define TARGET_NR_epoll_create       302
+#define TARGET_NR_epoll_ctl          303
+#define TARGET_NR_epoll_wait         304
+#define TARGET_NR_remap_file_pages   305
+#define TARGET_NR_statfs64           306
+#define TARGET_NR_fstatfs64          307
+#define TARGET_NR_tgkill             308
+#define TARGET_NR_utimes             309
+#define TARGET_NR_fadvise64_64       310
+#define TARGET_NR_vserver            311
+#define TARGET_NR_mbind              312
+#define TARGET_NR_get_mempolicy      313
+#define TARGET_NR_set_mempolicy      314
+#define TARGET_NR_mq_open            315
+#define TARGET_NR_mq_unlink          (TARGET_NR_mq_open+1)
+#define TARGET_NR_mq_timedsend       (TARGET_NR_mq_open+2)
+#define TARGET_NR_mq_timedreceive    (TARGET_NR_mq_open+3)
+#define TARGET_NR_mq_notify          (TARGET_NR_mq_open+4)
+#define TARGET_NR_mq_getsetattr      (TARGET_NR_mq_open+5)
+#define TARGET_NR_kexec_load		321
+#define TARGET_NR_waitid             322
+#define TARGET_NR_add_key            323
+#define TARGET_NR_request_key        324
+#define TARGET_NR_keyctl             325
+#define TARGET_NR_mcst_rt		326
+#define TARGET_NR_getcpu		327
+#define TARGET_NR_move_pages		328
+#define TARGET_NR_splice		329
+#define TARGET_NR_vmsplice		330
+#define TARGET_NR_tee		331
+#define TARGET_NR_migrate_pages	332
+#define TARGET_NR_utimensat		333
+#define TARGET_NR_rt_tgsigqueueinfo	334
+#define TARGET_NR_openat		335
+#define TARGET_NR_mkdirat		336
+#define TARGET_NR_mknodat		337
+#define TARGET_NR_fchownat		338
+#define TARGET_NR_unlinkat		339
+#define TARGET_NR_renameat		340
+#define TARGET_NR_linkat		341
+#define TARGET_NR_symlinkat		342
+#define TARGET_NR_readlinkat		343
+#define TARGET_NR_fchmodat		344
+#define TARGET_NR_faccessat		345
+#define TARGET_NR_epoll_pwait	346
+#define TARGET_NR_signalfd4		347
+#define TARGET_NR_eventfd2		348
+#define TARGET_NR_recvmmsg		349
+#define TARGET_NR_cnt_point		350
+#define TARGET_NR_timerfd_create	351
+#define TARGET_NR_timerfd_settime	352
+#define TARGET_NR_timerfd_gettime	353
+#define TARGET_NR_preadv		354
+#define TARGET_NR_pwritev		355
+#define TARGET_NR_fallocate		356
+#define TARGET_NR_sync_file_range	357
+#define TARGET_NR_dup3		358
+#define TARGET_NR_inotify_init1	359
+#define TARGET_NR_epoll_create1      360
+#define TARGET_NR_fstatat64		361
+#define TARGET_NR_futimesat		362
+#define TARGET_NR_perf_event_open	363
+#define TARGET_NR_unshare		364
+#define TARGET_NR_get_robust_list	365
+#define TARGET_NR_set_robust_list	366
+#define TARGET_NR_pselect6		367
+#define TARGET_NR_ppoll		368
+#define TARGET_NR_setcontext		369
+#define TARGET_NR_makecontext	370
+#define TARGET_NR_swapcontext	371
+#define TARGET_NR_freecontext	372
+#define TARGET_NR_fanotify_init	373
+#define TARGET_NR_fanotify_mark	374
+#define TARGET_NR_prlimit64		375
+#define TARGET_NR_clock_adjtime	376
+#define TARGET_NR_syncfs		377
+#define TARGET_NR_sendmmsg		378
+#define TARGET_NR_setns		379
+#define TARGET_NR_process_vm_readv	380
+#define TARGET_NR_process_vm_writev	381
+#define TARGET_NR_kcmp		382
+#define TARGET_NR_finit_module	383 
+#define TARGET_NR_syscalls 384
+
+#endif /* E2K_SYSCALL_NR_H */

linux-user/e2k/target_cpu.h

@@ -0,0 +1,30 @@
+#ifndef E2K_TARGET_CPU_H
+#define E2K_TARGET_CPU_H
+
+static inline void cpu_clone_regs_child(CPUE2KState *env, target_ulong newsp,
+                                        unsigned flags)
+{
+    // TODO
+}
+
+static inline void cpu_clone_regs_parent(CPUE2KState *env, unsigned flags)
+{
+    // TODO
+}
+
+static inline void cpu_set_tls(CPUE2KState *env, target_ulong newtls)
+{
+    // TODO
+}
+
+static inline target_ulong cpu_get_tls(CPUE2KState *env)
+{
+    // TODO
+}
+
+static inline abi_ulong get_sp_from_cpustate(CPUE2KState *state)
+{
+    // TODO
+}
+
+#endif /* E2K_TARGET_CPU_H */

linux-user/e2k/target_elf.h

@@ -0,0 +1,7 @@
+#ifndef E2K_TARGET_ELF_H
+#define E2K_TARGET_ELF_H
+static inline const char *cpu_get_model(uint32_t eflags)
+{
+    return "any";
+}
+#endif /* E2K_TARGET_ELF_H */

linux-user/e2k/target_fcntl.h

@@ -0,0 +1,4 @@
+#ifndef E2K_TARGET_FCNTL_H
+#define E2K_TARGET_FCNTL_H
+#include "../generic/fcntl.h"
+#endif 

linux-user/e2k/target_prctl.h

@@ -0,0 +1 @@
+/* TODO */

linux-user/e2k/target_resource.h

@@ -0,0 +1 @@
+#include "../generic/target_resource.h"

linux-user/e2k/target_signal.h

@@ -0,0 +1,15 @@
+#ifndef TARGET_SIGNAL_H
+#define TARGET_SIGNAL_H
+
+/*
+ * sigaltstack controls
+ */
+#define SS_ONSTACK      1
+#define SS_DISABLE      2
+
+#define MINSIGSTKSZ     4096
+#define SIGSTKSZ        8192
+
+#include "generic/signal.h"
+
+#endif /* TARGET_SIGNAL_H */ 

linux-user/e2k/target_syscall.h

@@ -0,0 +1,66 @@
+#ifndef E2K_TARGET_SYSCALL_H
+#define E2K_TARGET_SYSCALL_H
+
+#define UNAME_MACHINE "e2k"
+#define UNAME_MINUMIM_RELEASE "2.6.32"
+
+#define	E2K_MAXNR	128			/* The total number of */
+						/* quad-NRs */
+#define	E2K_MAXGR	16			/* The total number of global */
+						/* quad-NRs */
+#define	E2K_MAXSR	(E2K_MAXNR - E2K_MAXGR)	/* The total number of stack */
+						/* quad-NRs */
+#define	E2K_MAXNR_d	(E2K_MAXNR * 2)		/* The total number of */
+						/* double-NRs */
+#define	E2K_MAXGR_d	(E2K_MAXGR * 2)		/* The total number of global */
+						/* double-NRs */
+#define	E2K_MAXSR_d	(E2K_MAXSR * 2)		/* The total number of stack */
+						/* double-NRs */
+
+typedef uint64_t e2k_greg_t; // double word
+
+struct target_pt_regs {
+    
+    /* special registers */
+    uint64_t wd; // Current window descriptor (WD)
+        
+    uint32_t sbr; // User Stack Base Register (USBR/SBR)
+                  // SBR - contains the base (top) virtual address of the current User Stack area.
+    
+    // uint64_t tr; // current type register
+    
+    uint32_t psr; // Processor State Register (PSR)
+    uint32_t upsr; // User processor status register (UPSR)
+    uint64_t ip; // instruction pointer
+    uint64_t nip; // next instruction pointer
+    
+    uint64_t ctpr1; // Control Transfer Preparation Register (CTPR)
+    uint64_t ctpr2;
+    uint64_t ctpr3;
+    
+    uint32_t pfpfr; // Packed Floating Point Flag Register (PFPFR)
+    uint32_t fpcr; // Floating point control register (FPCR)
+    uint32_t fpsr; // Floating point state register (FPSR)
+    
+    // borrowed from Embox OS
+    uint64_t lsr; // Loop status register (LSR)
+    uint64_t ilcr; // Loop counter register (ILCR)
+    
+    uint64_t dr0;
+    
+    uint64_t cr0_hi;
+    uint64_t cr1_lo;
+    uint64_t cr1_hi;
+    uint64_t pcsp_hi;
+    uint64_t pcsp_lo;
+    uint64_t psp_lo;
+    uint64_t psp_hi;
+    uint64_t usd_lo; // User data
+    uint64_t usd_hi;
+    
+    uint64_t gbase[32];
+    uint16_t gext[32];
+};
+
+
+#endif /* E2K_TARGET_SYSCALL_H */

linux-user/e2k/termbits.h

@@ -0,0 +1,6 @@
+#ifndef _E2K_TERMBITS_H_
+#define _E2K_TERMBITS_H_
+
+#include "../generic/termbits.h"
+
+#endif /* _E2K_TERMBITS_H_ */

linux-user/elfload.c

@@ -1603,6 +1603,29 @@ static inline void init_thread(struct target_pt_regs *regs,
 
 #endif /* TARGET_HEXAGON */
 
+#ifdef TARGET_E2K
+
+#define elf_check_arch(x) ((x) == EM_MCST_ELBRUS || (x) == EM_E2K_OLD)
+#define ELF_START_MMAP          0x80000000
+#define ELF_CLASS               ELFCLASS64
+#define ELF_ARCH                EM_MCST_ELBRUS
+#define ELF_EXEC_PAGESIZE       4096
+#define ELF_NREG 256
+typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
+#define USE_ELF_CORE_DUMP
+
+static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop)
+{
+    // TODO
+}
+
+static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUE2KState *env)
+{
+    // TODO
+}
+
+#endif /* TARGET_E2K */
+
 #ifndef ELF_PLATFORM
 #define ELF_PLATFORM (NULL)
 #endif