# --- T2-COPYRIGHT-BEGIN --- # t2/package/*/musl/i860.patch.i860 # Copyright (C) 2026 The T2 SDE Project # SPDX-License-Identifier: GPL-2.0 or patched project license # --- T2-COPYRIGHT-END --- From: René Rebe Subject: [PATCH] add i860 port Static and dynamic linking, TLS through r30, lock and unlock atomics, optimized memcpy, memmove and memset. Against upstream commit 7813e9119eb5fe681b6750b8a033a0490bca0941 (regex: avoid int overflow in regcomp). Branch i860 at 4e2d57a5. Tested in the MAME magicst2 model only, not on real hardware. Signed-off-by: René Rebe Co-Authored-By: Claude Opus 5.5 --- arch/i860/atomic_arch.h | 33 +++ arch/i860/bits/alltypes.h.in | 19 ++ arch/i860/bits/float.h | 17 ++ arch/i860/bits/ipcstat.h | 2 + arch/i860/bits/msg.h | 19 ++ arch/i860/bits/sem.h | 19 ++ arch/i860/bits/setjmp.h | 2 + arch/i860/bits/shm.h | 32 +++ arch/i860/bits/signal.h | 99 +++++++++ arch/i860/bits/syscall.h.in | 319 ++++++++++++++++++++++++++++ arch/i860/bits/user.h | 1 + arch/i860/crt_arch.h | 20 ++ arch/i860/kstat.h | 1 + arch/i860/pthread_arch.h | 10 + arch/i860/reloc.h | 16 ++ arch/i860/syscall_arch.h | 88 ++++++++ configure | 2 + include/elf.h | 11 + src/ldso/i860/dlsym.s | 10 + src/setjmp/i860/longjmp.s | 34 +++ src/setjmp/i860/setjmp.s | 35 +++ src/signal/i860/restore.s | 12 ++ src/signal/i860/sigsetjmp.s | 25 +++ src/string/i860/memcpy.s | 209 ++++++++++++++++++ src/string/i860/memmove.s | 93 ++++++++ src/string/i860/memset.s | 66 ++++++ src/thread/i860/__set_thread_area.s | 9 + src/thread/i860/__unmapself.s | 9 + src/thread/i860/clone.s | 30 +++ src/thread/i860/syscall_cp.s | 32 +++ src/time/i860/time.c | 14 ++ 31 files changed, 1288 insertions(+) diff --git a/arch/i860/atomic_arch.h b/arch/i860/atomic_arch.h new file mode 100644 index 00000000..ee8c51ec --- /dev/null +++ b/arch/i860/atomic_arch.h @@ -0,0 +1,33 @@ +/* Copyright (C) 2026 René Rebe */ +/* + * Compare-and-swap in a lock/unlock interlocked sequence: the bus stays + * locked and interrupts are held off from the load until the access after + * unlock. A trap inside the sequence makes the kernel restart it at the + * lock instruction (EPSR.IL). + */ +#define a_cas a_cas +static inline int a_cas(volatile int *p, int t, int s) +{ + int old; + + __asm__ __volatile__ ( + "lock\n\t" + "ld.l 0(%1),%0\n\t" + "xor %0,%2,%%r0\n\t" + "bnc 1f\n\t" + "unlock\n\t" + "st.l %3,0(%1)\n\t" + "br 2f\n\t" + "nop\n" + "1:\tunlock\n\t" + "ld.l 0(%1),%%r0\n" + "2:" + : "=&r"(old) : "r"(p), "r"(t), "r"(s) : "memory"); + return old; +} + +#define a_barrier a_barrier +static inline void a_barrier() +{ + __asm__ __volatile__ ("" : : : "memory"); +} diff --git a/arch/i860/bits/alltypes.h.in b/arch/i860/bits/alltypes.h.in new file mode 100644 index 00000000..18bb5f17 --- /dev/null +++ b/arch/i860/bits/alltypes.h.in @@ -0,0 +1,19 @@ +/* Copyright (C) 2026 René Rebe */ +#define _Addr int +#define _Int64 long long +#define _Reg int + +#define __BYTE_ORDER 1234 +#define __LONG_MAX 0x7fffffffL + +#ifndef __cplusplus +TYPEDEF long wchar_t; +#endif + +TYPEDEF int blksize_t; +TYPEDEF unsigned int nlink_t; + +TYPEDEF float float_t; +TYPEDEF double double_t; + +TYPEDEF struct { long long __ll; long double __ld; } max_align_t; diff --git a/arch/i860/bits/float.h b/arch/i860/bits/float.h new file mode 100644 index 00000000..2313f5a5 --- /dev/null +++ b/arch/i860/bits/float.h @@ -0,0 +1,17 @@ +/* Copyright (C) 2026 René Rebe */ +#define FLT_EVAL_METHOD 0 + +#define LDBL_TRUE_MIN 4.94065645841246544177e-324L +#define LDBL_MIN 2.22507385850720138309e-308L +#define LDBL_MAX 1.79769313486231570815e+308L +#define LDBL_EPSILON 2.22044604925031308085e-16L + +#define LDBL_MANT_DIG 53 +#define LDBL_MIN_EXP (-1021) +#define LDBL_MAX_EXP 1024 + +#define LDBL_DIG 15 +#define LDBL_MIN_10_EXP (-307) +#define LDBL_MAX_10_EXP 308 + +#define DECIMAL_DIG 17 diff --git a/arch/i860/bits/ipcstat.h b/arch/i860/bits/ipcstat.h new file mode 100644 index 00000000..50698b03 --- /dev/null +++ b/arch/i860/bits/ipcstat.h @@ -0,0 +1,2 @@ +/* Copyright (C) 2026 René Rebe */ +#define IPC_STAT 0x102 diff --git a/arch/i860/bits/msg.h b/arch/i860/bits/msg.h new file mode 100644 index 00000000..451e18b6 --- /dev/null +++ b/arch/i860/bits/msg.h @@ -0,0 +1,19 @@ +/* Copyright (C) 2026 René Rebe */ +struct msqid_ds { + struct ipc_perm msg_perm; + unsigned long __msg_stime_lo; + unsigned long __msg_stime_hi; + unsigned long __msg_rtime_lo; + unsigned long __msg_rtime_hi; + unsigned long __msg_ctime_lo; + unsigned long __msg_ctime_hi; + unsigned long msg_cbytes; + msgqnum_t msg_qnum; + msglen_t msg_qbytes; + pid_t msg_lspid; + pid_t msg_lrpid; + unsigned long __unused[2]; + time_t msg_stime; + time_t msg_rtime; + time_t msg_ctime; +}; diff --git a/arch/i860/bits/sem.h b/arch/i860/bits/sem.h new file mode 100644 index 00000000..3e5d4447 --- /dev/null +++ b/arch/i860/bits/sem.h @@ -0,0 +1,19 @@ +/* Copyright (C) 2026 René Rebe */ +struct semid_ds { + struct ipc_perm sem_perm; + unsigned long __sem_otime_lo; + unsigned long __sem_otime_hi; + unsigned long __sem_ctime_lo; + unsigned long __sem_ctime_hi; +#if __BYTE_ORDER == __LITTLE_ENDIAN + unsigned short sem_nsems; + char __sem_nsems_pad[sizeof(long)-sizeof(short)]; +#else + char __sem_nsems_pad[sizeof(long)-sizeof(short)]; + unsigned short sem_nsems; +#endif + long __unused3; + long __unused4; + time_t sem_otime; + time_t sem_ctime; +}; diff --git a/arch/i860/bits/setjmp.h b/arch/i860/bits/setjmp.h new file mode 100644 index 00000000..e971250c --- /dev/null +++ b/arch/i860/bits/setjmp.h @@ -0,0 +1,2 @@ +/* Copyright (C) 2026 René Rebe */ +typedef unsigned long __jmp_buf[22]; diff --git a/arch/i860/bits/shm.h b/arch/i860/bits/shm.h new file mode 100644 index 00000000..b2dfae4e --- /dev/null +++ b/arch/i860/bits/shm.h @@ -0,0 +1,32 @@ +/* Copyright (C) 2026 René Rebe */ +#define SHMLBA 4096 + +struct shmid_ds { + struct ipc_perm shm_perm; + size_t shm_segsz; + unsigned long __shm_atime_lo; + unsigned long __shm_atime_hi; + unsigned long __shm_dtime_lo; + unsigned long __shm_dtime_hi; + unsigned long __shm_ctime_lo; + unsigned long __shm_ctime_hi; + pid_t shm_cpid; + pid_t shm_lpid; + unsigned long shm_nattch; + unsigned long __pad1; + unsigned long __pad2; + unsigned long __pad3; + time_t shm_atime; + time_t shm_dtime; + time_t shm_ctime; +}; + +struct shminfo { + unsigned long shmmax, shmmin, shmmni, shmseg, shmall, __unused[4]; +}; + +struct shm_info { + int __used_ids; + unsigned long shm_tot, shm_rss, shm_swp; + unsigned long __swap_attempts, __swap_successes; +}; diff --git a/arch/i860/bits/signal.h b/arch/i860/bits/signal.h new file mode 100644 index 00000000..220e44b2 --- /dev/null +++ b/arch/i860/bits/signal.h @@ -0,0 +1,99 @@ +/* Copyright (C) 2026 René Rebe */ +#if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \ + || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE) + +#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE) +# define MINSIGSTKSZ 2048 +# define SIGSTKSZ 8192 +#endif + +/* layout of the kernel's struct sigcontext (arch/i860 uapi) */ +typedef struct mcontext_t { + unsigned long __gregs[32]; + unsigned long __fpregs[32]; + unsigned long __psr, __epsr, __fir, __fsr; + unsigned long __oldmask; + unsigned long __fp_pipe[32]; +} mcontext_t; + +#if defined(_GNU_SOURCE) +#define REG_SP 2 +#define REG_FP 3 +#define REG_TP 30 +#endif + +#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE) +typedef unsigned long greg_t; +typedef unsigned long gregset_t[32]; +typedef unsigned long fpregset_t[32]; +struct sigcontext { + unsigned long gregs[32]; + unsigned long fpregs[32]; + unsigned long psr, epsr, fir, fsr; + unsigned long oldmask; +}; +#endif + +struct sigaltstack { + void *ss_sp; + int ss_flags; + size_t ss_size; +}; + +/* asm-generic order: the machine context comes before the mask */ +typedef struct __ucontext +{ + unsigned long uc_flags; + struct __ucontext *uc_link; + stack_t uc_stack; + mcontext_t uc_mcontext; + sigset_t uc_sigmask; +} ucontext_t; + +#define SA_NOCLDSTOP 1 +#define SA_NOCLDWAIT 2 +#define SA_SIGINFO 4 +#define SA_ONSTACK 0x08000000 +#define SA_RESTART 0x10000000 +#define SA_NODEFER 0x40000000 +#define SA_RESETHAND 0x80000000 +#define SA_RESTORER 0x04000000 + +#endif + +#define SIGHUP 1 +#define SIGINT 2 +#define SIGQUIT 3 +#define SIGILL 4 +#define SIGTRAP 5 +#define SIGABRT 6 +#define SIGIOT SIGABRT +#define SIGBUS 7 +#define SIGFPE 8 +#define SIGKILL 9 +#define SIGUSR1 10 +#define SIGSEGV 11 +#define SIGUSR2 12 +#define SIGPIPE 13 +#define SIGALRM 14 +#define SIGTERM 15 +#define SIGSTKFLT 16 +#define SIGCHLD 17 +#define SIGCONT 18 +#define SIGSTOP 19 +#define SIGTSTP 20 +#define SIGTTIN 21 +#define SIGTTOU 22 +#define SIGURG 23 +#define SIGXCPU 24 +#define SIGXFSZ 25 +#define SIGVTALRM 26 +#define SIGPROF 27 +#define SIGWINCH 28 +#define SIGIO 29 +#define SIGPOLL SIGIO +#define SIGPWR 30 +#define SIGSYS 31 +#define SIGUNUSED SIGSYS + +#define _NSIG 65 diff --git a/arch/i860/bits/syscall.h.in b/arch/i860/bits/syscall.h.in new file mode 100644 index 00000000..35f39c74 --- /dev/null +++ b/arch/i860/bits/syscall.h.in @@ -0,0 +1,319 @@ +/* Copyright (C) 2026 René Rebe */ +#define __NR_io_setup 0 +#define __NR_io_destroy 1 +#define __NR_io_submit 2 +#define __NR_io_cancel 3 +#define __NR_setxattr 5 +#define __NR_lsetxattr 6 +#define __NR_fsetxattr 7 +#define __NR_getxattr 8 +#define __NR_lgetxattr 9 +#define __NR_fgetxattr 10 +#define __NR_listxattr 11 +#define __NR_llistxattr 12 +#define __NR_flistxattr 13 +#define __NR_removexattr 14 +#define __NR_lremovexattr 15 +#define __NR_fremovexattr 16 +#define __NR_getcwd 17 +#define __NR_lookup_dcookie 18 +#define __NR_eventfd2 19 +#define __NR_epoll_create1 20 +#define __NR_epoll_ctl 21 +#define __NR_epoll_pwait 22 +#define __NR_dup 23 +#define __NR_dup3 24 +#define __NR_fcntl64 25 +#define __NR_inotify_init1 26 +#define __NR_inotify_add_watch 27 +#define __NR_inotify_rm_watch 28 +#define __NR_ioctl 29 +#define __NR_ioprio_set 30 +#define __NR_ioprio_get 31 +#define __NR_flock 32 +#define __NR_mknodat 33 +#define __NR_mkdirat 34 +#define __NR_unlinkat 35 +#define __NR_symlinkat 36 +#define __NR_linkat 37 +#define __NR_umount2 39 +#define __NR_mount 40 +#define __NR_pivot_root 41 +#define __NR_nfsservctl 42 +#define __NR_statfs64 43 +#define __NR_fstatfs64 44 +#define __NR_truncate64 45 +#define __NR_ftruncate64 46 +#define __NR_fallocate 47 +#define __NR_faccessat 48 +#define __NR_chdir 49 +#define __NR_fchdir 50 +#define __NR_chroot 51 +#define __NR_fchmod 52 +#define __NR_fchmodat 53 +#define __NR_fchownat 54 +#define __NR_fchown 55 +#define __NR_openat 56 +#define __NR_close 57 +#define __NR_vhangup 58 +#define __NR_pipe2 59 +#define __NR_quotactl 60 +#define __NR_getdents64 61 +#define __NR_llseek 62 +#define __NR_read 63 +#define __NR_write 64 +#define __NR_readv 65 +#define __NR_writev 66 +#define __NR_pread64 67 +#define __NR_pwrite64 68 +#define __NR_preadv 69 +#define __NR_pwritev 70 +#define __NR_sendfile64 71 +#define __NR_signalfd4 74 +#define __NR_vmsplice 75 +#define __NR_splice 76 +#define __NR_tee 77 +#define __NR_readlinkat 78 +#define __NR_sync 81 +#define __NR_fsync 82 +#define __NR_fdatasync 83 +#define __NR_sync_file_range 84 +#define __NR_timerfd_create 85 +#define __NR_acct 89 +#define __NR_capget 90 +#define __NR_capset 91 +#define __NR_personality 92 +#define __NR_exit 93 +#define __NR_exit_group 94 +#define __NR_waitid 95 +#define __NR_set_tid_address 96 +#define __NR_unshare 97 +#define __NR_set_robust_list 99 +#define __NR_get_robust_list 100 +#define __NR_getitimer 102 +#define __NR_setitimer 103 +#define __NR_kexec_load 104 +#define __NR_init_module 105 +#define __NR_delete_module 106 +#define __NR_timer_create 107 +#define __NR_timer_getoverrun 109 +#define __NR_timer_delete 111 +#define __NR_syslog 116 +#define __NR_ptrace 117 +#define __NR_sched_setparam 118 +#define __NR_sched_setscheduler 119 +#define __NR_sched_getscheduler 120 +#define __NR_sched_getparam 121 +#define __NR_sched_setaffinity 122 +#define __NR_sched_getaffinity 123 +#define __NR_sched_yield 124 +#define __NR_sched_get_priority_max 125 +#define __NR_sched_get_priority_min 126 +#define __NR_restart_syscall 128 +#define __NR_kill 129 +#define __NR_tkill 130 +#define __NR_tgkill 131 +#define __NR_sigaltstack 132 +#define __NR_rt_sigsuspend 133 +#define __NR_rt_sigaction 134 +#define __NR_rt_sigprocmask 135 +#define __NR_rt_sigpending 136 +#define __NR_rt_sigqueueinfo 138 +#define __NR_rt_sigreturn 139 +#define __NR_setpriority 140 +#define __NR_getpriority 141 +#define __NR_reboot 142 +#define __NR_setregid 143 +#define __NR_setgid 144 +#define __NR_setreuid 145 +#define __NR_setuid 146 +#define __NR_setresuid 147 +#define __NR_getresuid 148 +#define __NR_setresgid 149 +#define __NR_getresgid 150 +#define __NR_setfsuid 151 +#define __NR_setfsgid 152 +#define __NR_times 153 +#define __NR_setpgid 154 +#define __NR_getpgid 155 +#define __NR_getsid 156 +#define __NR_setsid 157 +#define __NR_getgroups 158 +#define __NR_setgroups 159 +#define __NR_uname 160 +#define __NR_sethostname 161 +#define __NR_setdomainname 162 +#define __NR_getrusage 165 +#define __NR_umask 166 +#define __NR_prctl 167 +#define __NR_getcpu 168 +#define __NR_getpid 172 +#define __NR_getppid 173 +#define __NR_getuid 174 +#define __NR_geteuid 175 +#define __NR_getgid 176 +#define __NR_getegid 177 +#define __NR_gettid 178 +#define __NR_sysinfo 179 +#define __NR_mq_open 180 +#define __NR_mq_unlink 181 +#define __NR_mq_notify 184 +#define __NR_mq_getsetattr 185 +#define __NR_msgget 186 +#define __NR_msgctl 187 +#define __NR_msgrcv 188 +#define __NR_msgsnd 189 +#define __NR_semget 190 +#define __NR_semctl 191 +#define __NR_semop 193 +#define __NR_shmget 194 +#define __NR_shmctl 195 +#define __NR_shmat 196 +#define __NR_shmdt 197 +#define __NR_socket 198 +#define __NR_socketpair 199 +#define __NR_bind 200 +#define __NR_listen 201 +#define __NR_accept 202 +#define __NR_connect 203 +#define __NR_getsockname 204 +#define __NR_getpeername 205 +#define __NR_sendto 206 +#define __NR_recvfrom 207 +#define __NR_setsockopt 208 +#define __NR_getsockopt 209 +#define __NR_shutdown 210 +#define __NR_sendmsg 211 +#define __NR_recvmsg 212 +#define __NR_readahead 213 +#define __NR_brk 214 +#define __NR_munmap 215 +#define __NR_mremap 216 +#define __NR_add_key 217 +#define __NR_request_key 218 +#define __NR_keyctl 219 +#define __NR_clone 220 +#define __NR_execve 221 +#define __NR_mmap2 222 +#define __NR_fadvise64_64 223 +#define __NR_swapon 224 +#define __NR_swapoff 225 +#define __NR_mprotect 226 +#define __NR_msync 227 +#define __NR_mlock 228 +#define __NR_munlock 229 +#define __NR_mlockall 230 +#define __NR_munlockall 231 +#define __NR_mincore 232 +#define __NR_madvise 233 +#define __NR_remap_file_pages 234 +#define __NR_mbind 235 +#define __NR_get_mempolicy 236 +#define __NR_set_mempolicy 237 +#define __NR_migrate_pages 238 +#define __NR_move_pages 239 +#define __NR_rt_tgsigqueueinfo 240 +#define __NR_perf_event_open 241 +#define __NR_accept4 242 +#define __NR_prlimit64 261 +#define __NR_fanotify_init 262 +#define __NR_fanotify_mark 263 +#define __NR_name_to_handle_at 264 +#define __NR_open_by_handle_at 265 +#define __NR_syncfs 267 +#define __NR_setns 268 +#define __NR_sendmmsg 269 +#define __NR_process_vm_readv 270 +#define __NR_process_vm_writev 271 +#define __NR_kcmp 272 +#define __NR_finit_module 273 +#define __NR_sched_setattr 274 +#define __NR_sched_getattr 275 +#define __NR_renameat2 276 +#define __NR_seccomp 277 +#define __NR_getrandom 278 +#define __NR_memfd_create 279 +#define __NR_bpf 280 +#define __NR_execveat 281 +#define __NR_userfaultfd 282 +#define __NR_membarrier 283 +#define __NR_mlock2 284 +#define __NR_copy_file_range 285 +#define __NR_preadv2 286 +#define __NR_pwritev2 287 +#define __NR_pkey_mprotect 288 +#define __NR_pkey_alloc 289 +#define __NR_pkey_free 290 +#define __NR_statx 291 +#define __NR_rseq 293 +#define __NR_kexec_file_load 294 +#define __NR_clock_gettime64 403 +#define __NR_clock_settime64 404 +#define __NR_clock_adjtime64 405 +#define __NR_clock_getres_time64 406 +#define __NR_clock_nanosleep_time64 407 +#define __NR_timer_gettime64 408 +#define __NR_timer_settime64 409 +#define __NR_timerfd_gettime64 410 +#define __NR_timerfd_settime64 411 +#define __NR_utimensat_time64 412 +#define __NR_pselect6_time64 413 +#define __NR_ppoll_time64 414 +#define __NR_io_pgetevents_time64 416 +#define __NR_recvmmsg_time64 417 +#define __NR_mq_timedsend_time64 418 +#define __NR_mq_timedreceive_time64 419 +#define __NR_semtimedop_time64 420 +#define __NR_rt_sigtimedwait_time64 421 +#define __NR_futex_time64 422 +#define __NR_sched_rr_get_interval_time64 423 +#define __NR_pidfd_send_signal 424 +#define __NR_io_uring_setup 425 +#define __NR_io_uring_enter 426 +#define __NR_io_uring_register 427 +#define __NR_open_tree 428 +#define __NR_move_mount 429 +#define __NR_fsopen 430 +#define __NR_fsconfig 431 +#define __NR_fsmount 432 +#define __NR_fspick 433 +#define __NR_pidfd_open 434 +#define __NR_clone3 435 +#define __NR_close_range 436 +#define __NR_openat2 437 +#define __NR_pidfd_getfd 438 +#define __NR_faccessat2 439 +#define __NR_process_madvise 440 +#define __NR_epoll_pwait2 441 +#define __NR_mount_setattr 442 +#define __NR_quotactl_fd 443 +#define __NR_landlock_create_ruleset 444 +#define __NR_landlock_add_rule 445 +#define __NR_landlock_restrict_self 446 +#define __NR_process_mrelease 448 +#define __NR_futex_waitv 449 +#define __NR_set_mempolicy_home_node 450 +#define __NR_cachestat 451 +#define __NR_fchmodat2 452 +#define __NR_map_shadow_stack 453 +#define __NR_futex_wake 454 +#define __NR_futex_wait 455 +#define __NR_futex_requeue 456 +#define __NR_statmount 457 +#define __NR_listmount 458 +#define __NR_lsm_get_self_attr 459 +#define __NR_lsm_set_self_attr 460 +#define __NR_lsm_list_modules 461 +#define __NR_mseal 462 +#define __NR_setxattrat 463 +#define __NR_getxattrat 464 +#define __NR_listxattrat 465 +#define __NR_removexattrat 466 +#define __NR_open_tree_attr 467 +#define __NR_file_getattr 468 +#define __NR_file_setattr 469 +#define __NR_listns 470 +#define __NR_rseq_slice_yield 471 +#define __NR_fchroot 472 +#define __NR__llseek __NR_llseek +#define __NR_futex __NR_futex_time64 diff --git a/arch/i860/bits/user.h b/arch/i860/bits/user.h new file mode 100644 index 00000000..24f0a197 --- /dev/null +++ b/arch/i860/bits/user.h @@ -0,0 +1 @@ +/* Copyright (C) 2026 René Rebe */ diff --git a/arch/i860/crt_arch.h b/arch/i860/crt_arch.h new file mode 100644 index 00000000..99097589 --- /dev/null +++ b/arch/i860/crt_arch.h @@ -0,0 +1,20 @@ +/* Copyright (C) 2026 René Rebe */ +__asm__( +".text\n" +".global " START "\n" +".type " START ",@function\n" +START ":\n" +" mov %r0,%fp\n" +" mov %sp,%r16\n" +#ifdef SHARED +/* Nothing is relocated yet: find _DYNAMIC relative to the PC (r1 after call) */ +" call 1f\n" +" nop\n" +"1: orh [_DYNAMIC]@pc@ha,%r0,%r17\n" +" adds [_DYNAMIC+4]@pc@l,%r17,%r17\n" +" addu %r1,%r17,%r17\n" +#endif +" andnot 15,%sp,%sp\n" +" call " START "_c\n" +" mov %r0,%r1\n" +); diff --git a/arch/i860/kstat.h b/arch/i860/kstat.h new file mode 100644 index 00000000..24f0a197 --- /dev/null +++ b/arch/i860/kstat.h @@ -0,0 +1 @@ +/* Copyright (C) 2026 René Rebe */ diff --git a/arch/i860/pthread_arch.h b/arch/i860/pthread_arch.h new file mode 100644 index 00000000..8ccf6b62 --- /dev/null +++ b/arch/i860/pthread_arch.h @@ -0,0 +1,10 @@ +/* Copyright (C) 2026 René Rebe */ +/* r30 is the thread pointer of the i860 Linux ABI (fixed in the compiler) */ +static inline uintptr_t __get_tp() +{ + uintptr_t tp; + __asm__ ("mov %%r30,%0" : "=r"(tp)); + return tp; +} + +#define MC_PC __fir diff --git a/arch/i860/reloc.h b/arch/i860/reloc.h new file mode 100644 index 00000000..4c7050bd --- /dev/null +++ b/arch/i860/reloc.h @@ -0,0 +1,16 @@ +/* Copyright (C) 2026 René Rebe */ +#define LDSO_ARCH "i860" + +#define TPOFF_K 0 + +#define REL_SYMBOLIC R_860_32 +#define REL_GOT R_860_GLOB_DAT +#define REL_PLT R_860_JUMP_SLOT +#define REL_RELATIVE R_860_RELATIVE +#define REL_COPY R_860_COPY +#define REL_DTPMOD R_860_TLS_DTPMOD32 +#define REL_DTPOFF R_860_TLS_DTPOFF32 +#define REL_TPOFF R_860_TLS_TPOFF32 + +#define CRTJMP(pc,sp) __asm__ __volatile__( \ + "mov %1,%%sp\n\tbri %0\n\tnop" : : "r"(pc), "r"(sp) : "memory" ) diff --git a/arch/i860/syscall_arch.h b/arch/i860/syscall_arch.h new file mode 100644 index 00000000..0b918f4c --- /dev/null +++ b/arch/i860/syscall_arch.h @@ -0,0 +1,88 @@ +/* Copyright (C) 2026 René Rebe */ +/* + * i860 Linux syscalls: "trap r0,r0,r0", number in r28, arguments in + * r16-r21, result in r16. All other registers are preserved; r28 may be + * changed by a restarted syscall. 64-bit arguments occupy two + * consecutive registers, low word first, without alignment. + */ +#define __SYSCALL_LL_E(x) \ +((union { long long ll; long l[2]; }){ .ll = x }).l[0], \ +((union { long long ll; long l[2]; }){ .ll = x }).l[1] +#define __SYSCALL_LL_O(x) __SYSCALL_LL_E((x)) + +#define __asm_syscall(...) \ + __asm__ __volatile__ ("trap %%r0,%%r0,%%r0" \ + : "+r"(r16), "+r"(r28) : __VA_ARGS__ : "memory"); \ + return r16; + +static inline long __syscall0(long n) +{ + register long r28 __asm__("r28") = n; + register long r16 __asm__("r16"); + __asm__ __volatile__ ("trap %%r0,%%r0,%%r0" + : "=r"(r16), "+r"(r28) : : "memory"); + return r16; +} + +static inline long __syscall1(long n, long a) +{ + register long r28 __asm__("r28") = n; + register long r16 __asm__("r16") = a; + __asm_syscall() +} + +static inline long __syscall2(long n, long a, long b) +{ + register long r28 __asm__("r28") = n; + register long r16 __asm__("r16") = a; + register long r17 __asm__("r17") = b; + __asm_syscall("r"(r17)) +} + +static inline long __syscall3(long n, long a, long b, long c) +{ + register long r28 __asm__("r28") = n; + register long r16 __asm__("r16") = a; + register long r17 __asm__("r17") = b; + register long r18 __asm__("r18") = c; + __asm_syscall("r"(r17), "r"(r18)) +} + +static inline long __syscall4(long n, long a, long b, long c, long d) +{ + register long r28 __asm__("r28") = n; + register long r16 __asm__("r16") = a; + register long r17 __asm__("r17") = b; + register long r18 __asm__("r18") = c; + register long r19 __asm__("r19") = d; + __asm_syscall("r"(r17), "r"(r18), "r"(r19)) +} + +static inline long __syscall5(long n, long a, long b, long c, long d, long e) +{ + register long r28 __asm__("r28") = n; + register long r16 __asm__("r16") = a; + register long r17 __asm__("r17") = b; + register long r18 __asm__("r18") = c; + register long r19 __asm__("r19") = d; + register long r20 __asm__("r20") = e; + __asm_syscall("r"(r17), "r"(r18), "r"(r19), "r"(r20)) +} + +static inline long __syscall6(long n, long a, long b, long c, long d, long e, long f) +{ + register long r28 __asm__("r28") = n; + register long r16 __asm__("r16") = a; + register long r17 __asm__("r17") = b; + register long r18 __asm__("r18") = c; + register long r19 __asm__("r19") = d; + register long r20 __asm__("r20") = e; + register long r21 __asm__("r21") = f; + __asm_syscall("r"(r17), "r"(r18), "r"(r19), "r"(r20), "r"(r21)) +} + +#define IPC_64 0 + +#define VDSO_USEFUL +#define VDSO_CGT_SYM "__vdso_clock_gettime" +#define VDSO_CGT_VER "LINUX_2.6" diff --git a/configure b/configure index bc9fbe48..4d1330ce 100755 --- a/configure +++ b/configure @@ -1,4 +1,5 @@ #!/bin/sh +# Copyright (C) 2026 René Rebe usage () { cat < */ #ifndef _ELF_H #define _ELF_H @@ -2892,6 +2893,16 @@ enum +#define R_860_NONE 0 +#define R_860_32 1 +#define R_860_COPY 2 +#define R_860_GLOB_DAT 3 +#define R_860_JUMP_SLOT 4 +#define R_860_RELATIVE 5 +#define R_860_TLS_DTPMOD32 6 +#define R_860_TLS_DTPOFF32 7 +#define R_860_TLS_TPOFF32 8 + #define R_390_NONE 0 #define R_390_8 1 #define R_390_12 2 diff --git a/src/ldso/i860/dlsym.s b/src/ldso/i860/dlsym.s new file mode 100644 index 00000000..2c4187cf --- /dev/null +++ b/src/ldso/i860/dlsym.s @@ -0,0 +1,10 @@ +# Copyright (C) 2026 René Rebe +# The caller's address selects the library search scope. A PLT entry has +# already restored r1 when it gets here. +.global dlsym +.hidden __dlsym +.type dlsym,@function +.align 8 +dlsym: + br __dlsym + mov %r1,%r18 diff --git a/src/setjmp/i860/longjmp.s b/src/setjmp/i860/longjmp.s new file mode 100644 index 00000000..481fcb13 --- /dev/null +++ b/src/setjmp/i860/longjmp.s @@ -0,0 +1,34 @@ +# Copyright (C) 2026 René Rebe +.global _longjmp +.global longjmp +.type _longjmp,@function +.type longjmp,@function +.align 8 +_longjmp: +longjmp: + mov %r17,%r18 + btne 0,%r18,1f + or 1,%r0,%r18 +1: ld.l 4(%r16),%sp + ld.l 8(%r16),%fp + ld.l 12(%r16),%r4 + ld.l 16(%r16),%r5 + ld.l 20(%r16),%r6 + ld.l 24(%r16),%r7 + ld.l 28(%r16),%r8 + ld.l 32(%r16),%r9 + ld.l 36(%r16),%r10 + ld.l 40(%r16),%r11 + ld.l 44(%r16),%r12 + ld.l 48(%r16),%r13 + ld.l 52(%r16),%r14 + ld.l 56(%r16),%r15 + fld.l 60(%r16),%f2 + fld.l 64(%r16),%f3 + fld.l 68(%r16),%f4 + fld.l 72(%r16),%f5 + fld.l 76(%r16),%f6 + fld.l 80(%r16),%f7 + ld.l 0(%r16),%r1 + bri %r1 + mov %r18,%r16 diff --git a/src/setjmp/i860/setjmp.s b/src/setjmp/i860/setjmp.s new file mode 100644 index 00000000..0f19c0eb --- /dev/null +++ b/src/setjmp/i860/setjmp.s @@ -0,0 +1,35 @@ +# Copyright (C) 2026 René Rebe +# jmp_buf: r1, sp, fp, r4-r15, f2-f7 (the callee-saved state) +.global __setjmp +.global _setjmp +.global setjmp +.type __setjmp,@function +.type _setjmp,@function +.type setjmp,@function +.align 8 +__setjmp: +_setjmp: +setjmp: + st.l %r1,0(%r16) + st.l %sp,4(%r16) + st.l %fp,8(%r16) + st.l %r4,12(%r16) + st.l %r5,16(%r16) + st.l %r6,20(%r16) + st.l %r7,24(%r16) + st.l %r8,28(%r16) + st.l %r9,32(%r16) + st.l %r10,36(%r16) + st.l %r11,40(%r16) + st.l %r12,44(%r16) + st.l %r13,48(%r16) + st.l %r14,52(%r16) + st.l %r15,56(%r16) + fst.l %f2,60(%r16) + fst.l %f3,64(%r16) + fst.l %f4,68(%r16) + fst.l %f5,72(%r16) + fst.l %f6,76(%r16) + fst.l %f7,80(%r16) + bri %r1 + mov %r0,%r16 diff --git a/src/signal/i860/restore.s b/src/signal/i860/restore.s new file mode 100644 index 00000000..54dcf07f --- /dev/null +++ b/src/signal/i860/restore.s @@ -0,0 +1,12 @@ +# Copyright (C) 2026 René Rebe +.global __restore +.hidden __restore +.type __restore,@function +.global __restore_rt +.hidden __restore_rt +.type __restore_rt,@function +.align 8 +__restore: +__restore_rt: + or 139,%r0,%r28 # SYS_rt_sigreturn + trap %r0,%r0,%r0 diff --git a/src/signal/i860/sigsetjmp.s b/src/signal/i860/sigsetjmp.s new file mode 100644 index 00000000..ba740e84 --- /dev/null +++ b/src/signal/i860/sigsetjmp.s @@ -0,0 +1,25 @@ +# Copyright (C) 2026 René Rebe +# __fl (offset 88) and __ss[2] (offset 100) of the sigjmp_buf hold r1 and r4 +# across setjmp; __sigsetjmp_tail only uses __ss[0..1]. +.global sigsetjmp +.global __sigsetjmp +.type sigsetjmp,@function +.type __sigsetjmp,@function +.align 8 +sigsetjmp: +__sigsetjmp: + btne 0,%r17,1f + br setjmp + nop +1: st.l %r1,88(%r16) + st.l %r4,100(%r16) + call setjmp + mov %r16,%r4 + + mov %r16,%r17 + mov %r4,%r16 + ld.l 100(%r16),%r4 + ld.l 88(%r16),%r1 +.hidden __sigsetjmp_tail + br __sigsetjmp_tail + nop diff --git a/src/string/i860/memcpy.s b/src/string/i860/memcpy.s new file mode 100644 index 00000000..049905e4 --- /dev/null +++ b/src/string/i860/memcpy.s @@ -0,0 +1,209 @@ +# Copyright (C) 2026 René Rebe +# Generated by tmp/musl/gen-string.py from the kernel arch/i860/lib. +.text +# void *memcpy(void *dst = r16, const void *src = r17, size_t n = r18) +.global memcpy +.global __memcpy_fwd +.hidden __memcpy_fwd +.type memcpy,@function +.align 8 +memcpy: + mov %r16,%r19 # r19 = d, r16 is returned +__memcpy_fwd: + xor %r19,%r17,%r20 + subu 15,%r18,%r0 # CC = n < 16 + bc .Lfsmall + and 15,%r20,%r0 # CC = d, s equally aligned mod 16 + bnc .Lf8 + + # bytes up to a 16-byte boundary +.Lfhead16: + and 15,%r19,%r0 + bc .Lfq + ld.b 0(%r17),%r20 + st.b %r20,0(%r19) + addu 1,%r17,%r17 + addu 1,%r19,%r19 + br .Lfhead16 + adds -1,%r18,%r18 + +.Lfq: + subu 63,%r18,%r0 # CC = n < 64 + bc .Lfq16 +.Lfq64: + fld.q 0(%r17),%f8 + fld.q 16(%r17),%f12 + fld.q 32(%r17),%f16 + fld.q 48(%r17),%f20 + fst.q %f8,0(%r19) + fst.q %f12,16(%r19) + fst.q %f16,32(%r19) + fst.q %f20,48(%r19) + addu 64,%r17,%r17 + addu 64,%r19,%r19 + adds -64,%r18,%r18 + subu 63,%r18,%r0 + bnc .Lfq64 +.Lfq16: + subu 15,%r18,%r0 + bc .Lfbytes + fld.q 0(%r17),%f8 + fst.q %f8,0(%r19) + addu 16,%r17,%r17 + addu 16,%r19,%r19 + br .Lfq16 + adds -16,%r18,%r18 + + # doublewords +.Lf8: + and 7,%r20,%r0 # CC = equally aligned mod 8 + bnc .Lf4 +.Lfhead8: + and 7,%r19,%r0 + bc .Lfd32 + ld.b 0(%r17),%r20 + st.b %r20,0(%r19) + addu 1,%r17,%r17 + addu 1,%r19,%r19 + br .Lfhead8 + adds -1,%r18,%r18 +.Lfd32: + subu 31,%r18,%r0 # CC = n < 32 + bc .Lfd + fld.d 0(%r17),%f8 + fld.d 8(%r17),%f10 + fld.d 16(%r17),%f12 + fld.d 24(%r17),%f14 + fst.d %f8,0(%r19) + fst.d %f10,8(%r19) + fst.d %f12,16(%r19) + fst.d %f14,24(%r19) + addu 32,%r17,%r17 + addu 32,%r19,%r19 + br .Lfd32 + adds -32,%r18,%r18 +.Lfd: + subu 7,%r18,%r0 # CC = n < 8 + bc .Lfbytes + fld.d 0(%r17),%f8 + fst.d %f8,0(%r19) + addu 8,%r17,%r17 + addu 8,%r19,%r19 + br .Lfd + adds -8,%r18,%r18 + + # words +.Lfsmall: + subu 3,%r18,%r0 # CC = n < 4 + bc .Lfbytes +.Lf4: + and 3,%r20,%r0 # CC = equally aligned mod 4 + bnc .Lfmerge +.Lfhead4: + and 3,%r19,%r0 + bc .Lfw32 + ld.b 0(%r17),%r20 + st.b %r20,0(%r19) + addu 1,%r17,%r17 + addu 1,%r19,%r19 + br .Lfhead4 + adds -1,%r18,%r18 +.Lfw32: + subu 31,%r18,%r0 # CC = n < 32 + bc .Lfw + ld.l 0(%r17),%r20 + ld.l 4(%r17),%r21 + ld.l 8(%r17),%r22 + ld.l 12(%r17),%r23 + ld.l 16(%r17),%r24 + ld.l 20(%r17),%r25 + ld.l 24(%r17),%r26 + ld.l 28(%r17),%r27 + st.l %r20,0(%r19) + st.l %r21,4(%r19) + st.l %r22,8(%r19) + st.l %r23,12(%r19) + st.l %r24,16(%r19) + st.l %r25,20(%r19) + st.l %r26,24(%r19) + st.l %r27,28(%r19) + addu 32,%r17,%r17 + addu 32,%r19,%r19 + br .Lfw32 + adds -32,%r18,%r18 +.Lfw: + subu 3,%r18,%r0 # CC = n < 4 + bc .Lfbytes + ld.l 0(%r17),%r20 + st.l %r20,0(%r19) + addu 4,%r17,%r17 + addu 4,%r19,%r19 + br .Lfw + adds -4,%r18,%r18 + + # Different alignment mod 4: aligned words of the source, shifted into + # place. Only words holding bytes to copy are read, so no fault past + # the end of the source. +.Lfmerge: + subu 15,%r18,%r0 # CC = n < 16 + bc .Lfbytes +.Lfmhead: + and 3,%r19,%r0 + bc .Lfmgo + ld.b 0(%r17),%r20 + st.b %r20,0(%r19) + addu 1,%r17,%r17 + addu 1,%r19,%r19 + br .Lfmhead + adds -1,%r18,%r18 +.Lfmgo: + and 3,%r17,%r21 + shl 3,%r21,%r21 # bits to shift right + or 32,%r0,%r22 + subu %r22,%r21,%r22 # bits to shift left + andnot 3,%r17,%r17 + ld.l 0(%r17),%r20 +.Lfm16: + subu 15,%r18,%r0 # CC = n < 16 + bc .Lfmend + ld.l 4(%r17),%r23 + ld.l 8(%r17),%r24 + ld.l 12(%r17),%r25 + ld.l 16(%r17),%r26 + shr %r21,%r20,%r20 + shl %r22,%r23,%r27 + or %r27,%r20,%r20 + st.l %r20,0(%r19) + shr %r21,%r23,%r23 + shl %r22,%r24,%r27 + or %r27,%r23,%r23 + st.l %r23,4(%r19) + shr %r21,%r24,%r24 + shl %r22,%r25,%r27 + or %r27,%r24,%r24 + st.l %r24,8(%r19) + shr %r21,%r25,%r25 + shl %r22,%r26,%r27 + or %r27,%r25,%r25 + st.l %r25,12(%r19) + mov %r26,%r20 + addu 16,%r17,%r17 + addu 16,%r19,%r19 + br .Lfm16 + adds -16,%r18,%r18 +.Lfmend: + shr 3,%r21,%r21 + addu %r21,%r17,%r17 # back to the next byte to copy + +.Lfbytes: + bte 0,%r18,.Ldone +1: ld.b 0(%r17),%r20 + st.b %r20,0(%r19) + addu 1,%r17,%r17 + addu 1,%r19,%r19 + adds -1,%r18,%r18 + btne 0,%r18,1b +.Ldone: + bri %r1 + nop + diff --git a/src/string/i860/memmove.s b/src/string/i860/memmove.s new file mode 100644 index 00000000..daf6de8b --- /dev/null +++ b/src/string/i860/memmove.s @@ -0,0 +1,93 @@ +# Copyright (C) 2026 René Rebe +# Generated by tmp/musl/gen-string.py from the kernel arch/i860/lib. +.text +# void *memmove(void *dst = r16, const void *src = r17, size_t n = r18) +.global memmove +.hidden __memcpy_fwd +.type memmove,@function +.align 8 +memmove: + mov %r16,%r19 + subu %r17,%r16,%r0 # CC = d <= s: forward copy is safe + bc __memcpy_fwd + addu %r18,%r17,%r21 # s + n + subu %r16,%r21,%r0 # CC = s + n <= d: no overlap + bc __memcpy_fwd + + # overlapping with d > s: copy backwards from the end + addu %r18,%r16,%r19 # r19 = d end, r17 = s end + mov %r21,%r17 + subu 15,%r18,%r0 + bc .Lbbytes + xor %r19,%r17,%r20 + and 15,%r20,%r0 + bnc .Lb4 + +.Lbhead16: + and 15,%r19,%r0 + bc .Lbq + ld.b -1(%r17),%r20 + st.b %r20,-1(%r19) + adds -1,%r17,%r17 + adds -1,%r19,%r19 + br .Lbhead16 + adds -1,%r18,%r18 +.Lbq: + subu 63,%r18,%r0 + bc .Lbq16 +.Lbq64: + fld.q -16(%r17),%f8 + fld.q -32(%r17),%f12 + fld.q -48(%r17),%f16 + fld.q -64(%r17),%f20 + fst.q %f8,-16(%r19) + fst.q %f12,-32(%r19) + fst.q %f16,-48(%r19) + fst.q %f20,-64(%r19) + adds -64,%r17,%r17 + adds -64,%r19,%r19 + adds -64,%r18,%r18 + subu 63,%r18,%r0 + bnc .Lbq64 +.Lbq16: + subu 15,%r18,%r0 + bc .Lbbytes + fld.q -16(%r17),%f8 + fst.q %f8,-16(%r19) + adds -16,%r17,%r17 + adds -16,%r19,%r19 + br .Lbq16 + adds -16,%r18,%r18 + +.Lb4: + and 3,%r20,%r0 + bnc .Lbbytes +.Lbhead4: + and 3,%r19,%r0 + bc .Lbw + ld.b -1(%r17),%r20 + st.b %r20,-1(%r19) + adds -1,%r17,%r17 + adds -1,%r19,%r19 + br .Lbhead4 + adds -1,%r18,%r18 +.Lbw: + subu 3,%r18,%r0 + bc .Lbbytes + ld.l -4(%r17),%r20 + st.l %r20,-4(%r19) + adds -4,%r17,%r17 + adds -4,%r19,%r19 + br .Lbw + adds -4,%r18,%r18 + +.Lbbytes: + bte 0,%r18,2f +1: ld.b -1(%r17),%r20 + st.b %r20,-1(%r19) + adds -1,%r17,%r17 + adds -1,%r19,%r19 + adds -1,%r18,%r18 + btne 0,%r18,1b +2: bri %r1 + nop diff --git a/src/string/i860/memset.s b/src/string/i860/memset.s new file mode 100644 index 00000000..18967be5 --- /dev/null +++ b/src/string/i860/memset.s @@ -0,0 +1,66 @@ +# Copyright (C) 2026 René Rebe +# Generated by tmp/musl/gen-string.py from the kernel arch/i860/lib. +.text +# void *memset(void *s = r16, int c = r17, size_t n = r18) +.global memset +.type memset,@function +.align 8 +memset: + mov %r16,%r19 # r19 = cursor, r16 is returned + and 0xff,%r17,%r17 + shl 8,%r17,%r20 + or %r20,%r17,%r17 + shl 16,%r17,%r20 + or %r20,%r17,%r17 # byte replicated into a word + subu 15,%r18,%r0 # CC = n < 16 + bc .Lbytes + +.Lhead: + and 15,%r19,%r0 + bc .Lq + st.b %r17,0(%r19) + addu 1,%r19,%r19 + br .Lhead + adds -1,%r18,%r18 + +.Lq: + ixfr %r17,%f8 + ixfr %r17,%f9 + ixfr %r17,%f10 + ixfr %r17,%f11 + subu 63,%r18,%r0 # CC = n < 64 + bc .Lq16 +.Lq64: + fst.q %f8,0(%r19) + fst.q %f8,16(%r19) + fst.q %f8,32(%r19) + fst.q %f8,48(%r19) + addu 64,%r19,%r19 + adds -64,%r18,%r18 + subu 63,%r18,%r0 + bnc .Lq64 +.Lq16: + subu 15,%r18,%r0 + bc .Lwords + fst.q %f8,0(%r19) + addu 16,%r19,%r19 + br .Lq16 + adds -16,%r18,%r18 + + # the cursor is 16-byte aligned here +.Lwords: + subu 3,%r18,%r0 # CC = n < 4 + bc .Lbytes + st.l %r17,0(%r19) + addu 4,%r19,%r19 + br .Lwords + adds -4,%r18,%r18 + +.Lbytes: + bte 0,%r18,2f +1: st.b %r17,0(%r19) + addu 1,%r19,%r19 + adds -1,%r18,%r18 + btne 0,%r18,1b +2: bri %r1 + nop diff --git a/src/thread/i860/__set_thread_area.s b/src/thread/i860/__set_thread_area.s new file mode 100644 index 00000000..b3d075a2 --- /dev/null +++ b/src/thread/i860/__set_thread_area.s @@ -0,0 +1,9 @@ +# Copyright (C) 2026 René Rebe +# r30 is the thread pointer of the i860 Linux ABI +.global __set_thread_area +.type __set_thread_area,@function +.align 8 +__set_thread_area: + mov %r16,%r30 + bri %r1 + mov %r0,%r16 diff --git a/src/thread/i860/__unmapself.s b/src/thread/i860/__unmapself.s new file mode 100644 index 00000000..625514b6 --- /dev/null +++ b/src/thread/i860/__unmapself.s @@ -0,0 +1,9 @@ +# Copyright (C) 2026 René Rebe +.global __unmapself +.type __unmapself,@function +.align 8 +__unmapself: + or 215,%r0,%r28 # SYS_munmap + trap %r0,%r0,%r0 + or 93,%r0,%r28 # SYS_exit + trap %r0,%r0,%r0 diff --git a/src/thread/i860/clone.s b/src/thread/i860/clone.s new file mode 100644 index 00000000..90aa7485 --- /dev/null +++ b/src/thread/i860/clone.s @@ -0,0 +1,30 @@ +# Copyright (C) 2026 René Rebe +# __clone(func, stack, flags, arg, ptid, tls, ctid) +# r16 r17 r18 r19 r20 r21 r22 +# syscall(SYS_clone, flags, stack, ptid, ctid, tls) +# r28 r16 r17 r18 r19 r20 +.global __clone +.hidden __clone +.type __clone,@function +.align 8 +__clone: + andnot 15,%r17,%r17 + adds -16,%r17,%r17 + st.l %r16,0(%r17) # func and arg for the child + st.l %r19,4(%r17) + mov %r18,%r16 + mov %r20,%r18 + mov %r22,%r19 + mov %r21,%r20 + or 220,%r0,%r28 # SYS_clone + trap %r0,%r0,%r0 + bte 0,%r16,1f + bri %r1 # parent + nop +1: ld.l 0(%sp),%r20 + ld.l 4(%sp),%r16 + mov %r0,%fp + calli %r20 + nop + or 93,%r0,%r28 # SYS_exit + trap %r0,%r0,%r0 diff --git a/src/thread/i860/syscall_cp.s b/src/thread/i860/syscall_cp.s new file mode 100644 index 00000000..432d5b2d --- /dev/null +++ b/src/thread/i860/syscall_cp.s @@ -0,0 +1,32 @@ +# Copyright (C) 2026 René Rebe +# __syscall_cp_asm(&self->cancel, nr, u, v, w, x, y, z) +# r16 r17 r18 ... r23 +.global __cp_begin +.hidden __cp_begin +.global __cp_end +.hidden __cp_end +.global __cp_cancel +.hidden __cp_cancel +.hidden __cancel +.global __syscall_cp_asm +.hidden __syscall_cp_asm +.type __syscall_cp_asm,@function +.align 8 +__syscall_cp_asm: +__cp_begin: + ld.l 0(%r16),%r28 + btne 0,%r28,__cp_cancel + mov %r17,%r28 + mov %r18,%r16 + mov %r19,%r17 + mov %r20,%r18 + mov %r21,%r19 + mov %r22,%r20 + mov %r23,%r21 + trap %r0,%r0,%r0 +__cp_end: + bri %r1 + nop +__cp_cancel: + br __cancel + nop diff --git a/src/time/i860/time.c b/src/time/i860/time.c new file mode 100644 index 00000000..fe574d25 --- /dev/null +++ b/src/time/i860/time.c @@ -0,0 +1,14 @@ +/* Copyright (C) 2026 René Rebe */ +#include +#include "syscall.h" + +/* Only the coarse clock needs no system call here, as the timer is not readable from user mode. */ +int __clock_gettime(clockid_t, struct timespec *); + +time_t time(time_t *t) +{ + struct timespec ts; + __clock_gettime(CLOCK_REALTIME_COARSE, &ts); + if (t) *t = ts.tv_sec; + return ts.tv_sec; +}