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Message-Id: <20200903112309.102601-11-sorear@fastmail.com>
Date: Thu, 3 Sep 2020 07:23:05 -0400
From: Stefan O'Rear <sorear@...tmail.com>
To: musl@...ts.openwall.com
Cc: Stefan O'Rear <sorear@...tmail.com>
Subject: [PATCH 10/14] riscv32: add arch headers
These are mostly copied from riscv64. _Addr and _Reg had to become int
to avoid errors in libstdc++ when size_t and std::size_t mismatch.
There is no kernel stat struct; the userspace stat matches glibc in the
sizes and offsets of all fields (including glibc's __dev_t __pad1). The
jump buffer is 12 words larger to account for 12 saved double-precision
floats; additionally it should be 64-bit aligned to save doubles.
The syscall list was significantly revised by deleting all time32 and
pre-statx syscalls, and renaming several syscalls that have different
names depending on __BITS_PER_LONG, notably mmap2 and _llseek.
---
arch/riscv32/atomic_arch.h | 21 +++
arch/riscv32/bits/alltypes.h.in | 18 ++
arch/riscv32/bits/fcntl.h | 38 +++++
arch/riscv32/bits/fenv.h | 17 ++
arch/riscv32/bits/float.h | 16 ++
arch/riscv32/bits/posix.h | 2 +
arch/riscv32/bits/setjmp.h | 1 +
arch/riscv32/bits/signal.h | 118 +++++++++++++
arch/riscv32/bits/stat.h | 18 ++
arch/riscv32/bits/stdint.h | 20 +++
arch/riscv32/bits/syscall.h.in | 284 ++++++++++++++++++++++++++++++++
arch/riscv32/bits/user.h | 5 +
arch/riscv32/crt_arch.h | 19 +++
arch/riscv32/kstat.h | 0
arch/riscv32/pthread_arch.h | 13 ++
arch/riscv32/reloc.h | 22 +++
arch/riscv32/syscall_arch.h | 78 +++++++++
17 files changed, 690 insertions(+)
create mode 100644 arch/riscv32/atomic_arch.h
create mode 100644 arch/riscv32/bits/alltypes.h.in
create mode 100644 arch/riscv32/bits/fcntl.h
create mode 100644 arch/riscv32/bits/fenv.h
create mode 100644 arch/riscv32/bits/float.h
create mode 100644 arch/riscv32/bits/posix.h
create mode 100644 arch/riscv32/bits/setjmp.h
create mode 100644 arch/riscv32/bits/signal.h
create mode 100644 arch/riscv32/bits/stat.h
create mode 100644 arch/riscv32/bits/stdint.h
create mode 100644 arch/riscv32/bits/syscall.h.in
create mode 100644 arch/riscv32/bits/user.h
create mode 100644 arch/riscv32/crt_arch.h
create mode 100644 arch/riscv32/kstat.h
create mode 100644 arch/riscv32/pthread_arch.h
create mode 100644 arch/riscv32/reloc.h
create mode 100644 arch/riscv32/syscall_arch.h
diff --git a/arch/riscv32/atomic_arch.h b/arch/riscv32/atomic_arch.h
new file mode 100644
index 00000000..4d418f63
--- /dev/null
+++ b/arch/riscv32/atomic_arch.h
@@ -0,0 +1,21 @@
+#define a_barrier a_barrier
+static inline void a_barrier()
+{
+ __asm__ __volatile__ ("fence rw,rw" : : : "memory");
+}
+
+#define a_cas a_cas
+static inline int a_cas(volatile int *p, int t, int s)
+{
+ int old, tmp;
+ __asm__ __volatile__ (
+ "\n1: lr.w.aqrl %0, (%2)\n"
+ " bne %0, %3, 1f\n"
+ " sc.w.aqrl %1, %4, (%2)\n"
+ " bnez %1, 1b\n"
+ "1:"
+ : "=&r"(old), "=&r"(tmp)
+ : "r"(p), "r"((long)t), "r"((long)s)
+ : "memory");
+ return old;
+}
diff --git a/arch/riscv32/bits/alltypes.h.in b/arch/riscv32/bits/alltypes.h.in
new file mode 100644
index 00000000..e2b6129e
--- /dev/null
+++ b/arch/riscv32/bits/alltypes.h.in
@@ -0,0 +1,18 @@
+#define _Addr int
+#define _Int64 long long
+#define _Reg int
+
+#define __BYTE_ORDER 1234
+#define __LONG_MAX 0x7fffffffL
+
+#ifndef __cplusplus
+TYPEDEF int 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/riscv32/bits/fcntl.h b/arch/riscv32/bits/fcntl.h
new file mode 100644
index 00000000..ecb4d18f
--- /dev/null
+++ b/arch/riscv32/bits/fcntl.h
@@ -0,0 +1,38 @@
+#define O_CREAT 0100
+#define O_EXCL 0200
+#define O_NOCTTY 0400
+#define O_TRUNC 01000
+#define O_APPEND 02000
+#define O_NONBLOCK 04000
+#define O_DSYNC 010000
+#define O_SYNC 04010000
+#define O_RSYNC 04010000
+#define O_DIRECTORY 0200000
+#define O_NOFOLLOW 0400000
+#define O_CLOEXEC 02000000
+
+#define O_ASYNC 020000
+#define O_DIRECT 040000
+#define O_LARGEFILE 0100000
+#define O_NOATIME 01000000
+#define O_PATH 010000000
+#define O_TMPFILE 020200000
+#define O_NDELAY O_NONBLOCK
+
+#define F_DUPFD 0
+#define F_GETFD 1
+#define F_SETFD 2
+#define F_GETFL 3
+#define F_SETFL 4
+#define F_GETLK 5
+#define F_SETLK 6
+#define F_SETLKW 7
+#define F_SETOWN 8
+#define F_GETOWN 9
+#define F_SETSIG 10
+#define F_GETSIG 11
+
+#define F_SETOWN_EX 15
+#define F_GETOWN_EX 16
+
+#define F_GETOWNER_UIDS 17
diff --git a/arch/riscv32/bits/fenv.h b/arch/riscv32/bits/fenv.h
new file mode 100644
index 00000000..806ec40f
--- /dev/null
+++ b/arch/riscv32/bits/fenv.h
@@ -0,0 +1,17 @@
+#define FE_INVALID 16
+#define FE_DIVBYZERO 8
+#define FE_OVERFLOW 4
+#define FE_UNDERFLOW 2
+#define FE_INEXACT 1
+
+#define FE_ALL_EXCEPT 31
+
+#define FE_TONEAREST 0
+#define FE_DOWNWARD 2
+#define FE_UPWARD 3
+#define FE_TOWARDZERO 1
+
+typedef unsigned int fexcept_t;
+typedef unsigned int fenv_t;
+
+#define FE_DFL_ENV ((const fenv_t *) -1)
diff --git a/arch/riscv32/bits/float.h b/arch/riscv32/bits/float.h
new file mode 100644
index 00000000..719c7908
--- /dev/null
+++ b/arch/riscv32/bits/float.h
@@ -0,0 +1,16 @@
+#define FLT_EVAL_METHOD 0
+
+#define LDBL_TRUE_MIN 6.47517511943802511092443895822764655e-4966L
+#define LDBL_MIN 3.36210314311209350626267781732175260e-4932L
+#define LDBL_MAX 1.18973149535723176508575932662800702e+4932L
+#define LDBL_EPSILON 1.92592994438723585305597794258492732e-34L
+
+#define LDBL_MANT_DIG 113
+#define LDBL_MIN_EXP (-16381)
+#define LDBL_MAX_EXP 16384
+
+#define LDBL_DIG 33
+#define LDBL_MIN_10_EXP (-4931)
+#define LDBL_MAX_10_EXP 4932
+
+#define DECIMAL_DIG 36
diff --git a/arch/riscv32/bits/posix.h b/arch/riscv32/bits/posix.h
new file mode 100644
index 00000000..8897d37d
--- /dev/null
+++ b/arch/riscv32/bits/posix.h
@@ -0,0 +1,2 @@
+#define _POSIX_V6_ILP32_OFFBIG 1
+#define _POSIX_V7_ILP32_OFFBIG 1
diff --git a/arch/riscv32/bits/setjmp.h b/arch/riscv32/bits/setjmp.h
new file mode 100644
index 00000000..51e96276
--- /dev/null
+++ b/arch/riscv32/bits/setjmp.h
@@ -0,0 +1 @@
+typedef unsigned long long __jmp_buf[19];
diff --git a/arch/riscv32/bits/signal.h b/arch/riscv32/bits/signal.h
new file mode 100644
index 00000000..b006334f
--- /dev/null
+++ b/arch/riscv32/bits/signal.h
@@ -0,0 +1,118 @@
+#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
+
+typedef unsigned long __riscv_mc_gp_state[32];
+
+struct __riscv_mc_f_ext_state {
+ unsigned int __f[32];
+ unsigned int __fcsr;
+};
+
+struct __riscv_mc_d_ext_state {
+ unsigned long long __f[32];
+ unsigned int __fcsr;
+};
+
+struct __riscv_mc_q_ext_state {
+ unsigned long long __f[64] __attribute__((aligned(16)));
+ unsigned int __fcsr;
+ unsigned int __reserved[3];
+};
+
+union __riscv_mc_fp_state {
+ struct __riscv_mc_f_ext_state __f;
+ struct __riscv_mc_d_ext_state __d;
+ struct __riscv_mc_q_ext_state __q;
+};
+
+typedef struct mcontext_t {
+ __riscv_mc_gp_state __gregs;
+ union __riscv_mc_fp_state __fpregs;
+} mcontext_t;
+
+#if defined(_GNU_SOURCE)
+#define REG_PC 0
+#define REG_RA 1
+#define REG_SP 2
+#define REG_TP 4
+#define REG_S0 8
+#define REG_A0 10
+#endif
+
+#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
+typedef unsigned long greg_t;
+typedef unsigned long gregset_t[32];
+typedef union __riscv_mc_fp_state fpregset_t;
+struct sigcontext {
+ gregset_t gregs;
+ fpregset_t fpregs;
+};
+#endif
+
+struct sigaltstack {
+ void *ss_sp;
+ int ss_flags;
+ size_t ss_size;
+};
+
+typedef struct ucontext_t
+{
+ unsigned long uc_flags;
+ struct ucontext_t *uc_link;
+ stack_t uc_stack;
+ sigset_t uc_sigmask;
+ mcontext_t uc_mcontext;
+} 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/riscv32/bits/stat.h b/arch/riscv32/bits/stat.h
new file mode 100644
index 00000000..f6d9e864
--- /dev/null
+++ b/arch/riscv32/bits/stat.h
@@ -0,0 +1,18 @@
+struct stat {
+ dev_t st_dev;
+ ino_t st_ino;
+ mode_t st_mode;
+ nlink_t st_nlink;
+ uid_t st_uid;
+ gid_t st_gid;
+ dev_t st_rdev;
+ unsigned long long __pad;
+ off_t st_size;
+ blksize_t st_blksize;
+ int __pad2;
+ blkcnt_t st_blocks;
+ struct timespec st_atim;
+ struct timespec st_mtim;
+ struct timespec st_ctim;
+ unsigned __unused[2];
+};
diff --git a/arch/riscv32/bits/stdint.h b/arch/riscv32/bits/stdint.h
new file mode 100644
index 00000000..d1b27121
--- /dev/null
+++ b/arch/riscv32/bits/stdint.h
@@ -0,0 +1,20 @@
+typedef int32_t int_fast16_t;
+typedef int32_t int_fast32_t;
+typedef uint32_t uint_fast16_t;
+typedef uint32_t uint_fast32_t;
+
+#define INT_FAST16_MIN INT32_MIN
+#define INT_FAST32_MIN INT32_MIN
+
+#define INT_FAST16_MAX INT32_MAX
+#define INT_FAST32_MAX INT32_MAX
+
+#define UINT_FAST16_MAX UINT32_MAX
+#define UINT_FAST32_MAX UINT32_MAX
+
+#define INTPTR_MIN INT32_MIN
+#define INTPTR_MAX INT32_MAX
+#define UINTPTR_MAX UINT32_MAX
+#define PTRDIFF_MIN INT32_MIN
+#define PTRDIFF_MAX INT32_MAX
+#define SIZE_MAX UINT32_MAX
diff --git a/arch/riscv32/bits/syscall.h.in b/arch/riscv32/bits/syscall.h.in
new file mode 100644
index 00000000..08131e64
--- /dev/null
+++ b/arch/riscv32/bits/syscall.h.in
@@ -0,0 +1,284 @@
+#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_nanosleep 101
+#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_arch_specific_syscall 244
+#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_sysriscv __NR_arch_specific_syscall
+#define __NR_riscv_flush_icache (__NR_sysriscv + 15)
diff --git a/arch/riscv32/bits/user.h b/arch/riscv32/bits/user.h
new file mode 100644
index 00000000..2da743ea
--- /dev/null
+++ b/arch/riscv32/bits/user.h
@@ -0,0 +1,5 @@
+#include <signal.h>
+
+#define ELF_NGREG 32
+typedef unsigned long elf_greg_t, elf_gregset_t[ELF_NGREG];
+typedef union __riscv_mc_fp_state elf_fpregset_t;
diff --git a/arch/riscv32/crt_arch.h b/arch/riscv32/crt_arch.h
new file mode 100644
index 00000000..6b93fcfd
--- /dev/null
+++ b/arch/riscv32/crt_arch.h
@@ -0,0 +1,19 @@
+__asm__(
+".section .sdata,\"aw\"\n"
+".text\n"
+".global " START "\n"
+".type " START ",%function\n"
+START ":\n"
+".weak __global_pointer$\n"
+".hidden __global_pointer$\n"
+".option push\n"
+".option norelax\n\t"
+"lla gp, __global_pointer$\n"
+".option pop\n\t"
+"mv a0, sp\n"
+".weak _DYNAMIC\n"
+".hidden _DYNAMIC\n\t"
+"lla a1, _DYNAMIC\n\t"
+"andi sp, sp, -16\n\t"
+"tail " START "_c"
+);
diff --git a/arch/riscv32/kstat.h b/arch/riscv32/kstat.h
new file mode 100644
index 00000000..e69de29b
diff --git a/arch/riscv32/pthread_arch.h b/arch/riscv32/pthread_arch.h
new file mode 100644
index 00000000..a20d7fba
--- /dev/null
+++ b/arch/riscv32/pthread_arch.h
@@ -0,0 +1,13 @@
+static inline uintptr_t __get_tp()
+{
+ uintptr_t tp;
+ __asm__ __volatile__("mv %0, tp" : "=r"(tp));
+ return tp;
+}
+
+#define TLS_ABOVE_TP
+#define GAP_ABOVE_TP 0
+
+#define DTP_OFFSET 0x800
+
+#define MC_PC __gregs[0]
diff --git a/arch/riscv32/reloc.h b/arch/riscv32/reloc.h
new file mode 100644
index 00000000..59d15f17
--- /dev/null
+++ b/arch/riscv32/reloc.h
@@ -0,0 +1,22 @@
+#if defined __riscv_float_abi_soft
+#define RISCV_FP_SUFFIX "-sf"
+#elif defined __riscv_float_abi_single
+#define RISCV_FP_SUFFIX "-sp"
+#elif defined __riscv_float_abi_double
+#define RISCV_FP_SUFFIX ""
+#endif
+
+#define LDSO_ARCH "riscv32" RISCV_FP_SUFFIX
+
+#define TPOFF_K 0
+
+#define REL_SYMBOLIC R_RISCV_32
+#define REL_PLT R_RISCV_JUMP_SLOT
+#define REL_RELATIVE R_RISCV_RELATIVE
+#define REL_COPY R_RISCV_COPY
+#define REL_DTPMOD R_RISCV_TLS_DTPMOD32
+#define REL_DTPOFF R_RISCV_TLS_DTPREL32
+#define REL_TPOFF R_RISCV_TLS_TPREL32
+
+#define CRTJMP(pc,sp) __asm__ __volatile__( \
+ "mv sp, %1 ; jr %0" : : "r"(pc), "r"(sp) : "memory" )
diff --git a/arch/riscv32/syscall_arch.h b/arch/riscv32/syscall_arch.h
new file mode 100644
index 00000000..9e916c76
--- /dev/null
+++ b/arch/riscv32/syscall_arch.h
@@ -0,0 +1,78 @@
+#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__ ("ecall\n\t" \
+ : "=r"(a0) : __VA_ARGS__ : "memory"); \
+ return a0; \
+
+static inline long __syscall0(long n)
+{
+ register long a7 __asm__("a7") = n;
+ register long a0 __asm__("a0");
+ __asm_syscall("r"(a7))
+}
+
+static inline long __syscall1(long n, long a)
+{
+ register long a7 __asm__("a7") = n;
+ register long a0 __asm__("a0") = a;
+ __asm_syscall("r"(a7), "0"(a0))
+}
+
+static inline long __syscall2(long n, long a, long b)
+{
+ register long a7 __asm__("a7") = n;
+ register long a0 __asm__("a0") = a;
+ register long a1 __asm__("a1") = b;
+ __asm_syscall("r"(a7), "0"(a0), "r"(a1))
+}
+
+static inline long __syscall3(long n, long a, long b, long c)
+{
+ register long a7 __asm__("a7") = n;
+ register long a0 __asm__("a0") = a;
+ register long a1 __asm__("a1") = b;
+ register long a2 __asm__("a2") = c;
+ __asm_syscall("r"(a7), "0"(a0), "r"(a1), "r"(a2))
+}
+
+static inline long __syscall4(long n, long a, long b, long c, long d)
+{
+ register long a7 __asm__("a7") = n;
+ register long a0 __asm__("a0") = a;
+ register long a1 __asm__("a1") = b;
+ register long a2 __asm__("a2") = c;
+ register long a3 __asm__("a3") = d;
+ __asm_syscall("r"(a7), "0"(a0), "r"(a1), "r"(a2), "r"(a3))
+}
+
+static inline long __syscall5(long n, long a, long b, long c, long d, long e)
+{
+ register long a7 __asm__("a7") = n;
+ register long a0 __asm__("a0") = a;
+ register long a1 __asm__("a1") = b;
+ register long a2 __asm__("a2") = c;
+ register long a3 __asm__("a3") = d;
+ register long a4 __asm__("a4") = e;
+ __asm_syscall("r"(a7), "0"(a0), "r"(a1), "r"(a2), "r"(a3), "r"(a4))
+}
+
+static inline long __syscall6(long n, long a, long b, long c, long d, long e, long f)
+{
+ register long a7 __asm__("a7") = n;
+ register long a0 __asm__("a0") = a;
+ register long a1 __asm__("a1") = b;
+ register long a2 __asm__("a2") = c;
+ register long a3 __asm__("a3") = d;
+ register long a4 __asm__("a4") = e;
+ register long a5 __asm__("a5") = f;
+ __asm_syscall("r"(a7), "0"(a0), "r"(a1), "r"(a2), "r"(a3), "r"(a4), "r"(a5))
+}
+
+#define VDSO_USEFUL
+/* We don't have a clock_gettime function.
+#define VDSO_CGT_SYM "__vdso_clock_gettime"
+#define VDSO_CGT_VER "LINUX_2.6" */
--
2.25.4
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