1 /* SPDX-License-Identifier: GPL-2.0 */ <<
2 /* 1 /*
3 * sys32.S: I-cache tricks for 32-bit compatib 2 * sys32.S: I-cache tricks for 32-bit compatibility layer simple
4 * conversions. 3 * conversions.
5 * 4 *
6 * Copyright (C) 1997 David S. Miller (davem@c 5 * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
7 * Copyright (C) 1998 Jakub Jelinek (jj@ultr 6 * Copyright (C) 1998 Jakub Jelinek (jj@ultra.linux.cz)
8 */ 7 */
9 8
10 #include <asm/errno.h> 9 #include <asm/errno.h>
11 10
12 /* NOTE: call as jump breaks return stack, we 11 /* NOTE: call as jump breaks return stack, we have to avoid that */
13 12
14 .text 13 .text
15 14
>> 15 #define SIGN1(STUB,SYSCALL,REG1) \
>> 16 .align 32; \
>> 17 .globl STUB; \
>> 18 STUB: sethi %hi(SYSCALL), %g1; \
>> 19 jmpl %g1 + %lo(SYSCALL), %g0; \
>> 20 sra REG1, 0, REG1
>> 21
>> 22 #define SIGN2(STUB,SYSCALL,REG1,REG2) \
>> 23 .align 32; \
>> 24 .globl STUB; \
>> 25 STUB: sethi %hi(SYSCALL), %g1; \
>> 26 sra REG1, 0, REG1; \
>> 27 jmpl %g1 + %lo(SYSCALL), %g0; \
>> 28 sra REG2, 0, REG2
>> 29
>> 30 #define SIGN3(STUB,SYSCALL,REG1,REG2,REG3) \
>> 31 .align 32; \
>> 32 .globl STUB; \
>> 33 STUB: sra REG1, 0, REG1; \
>> 34 sethi %hi(SYSCALL), %g1; \
>> 35 sra REG2, 0, REG2; \
>> 36 jmpl %g1 + %lo(SYSCALL), %g0; \
>> 37 sra REG3, 0, REG3
>> 38
>> 39 #define SIGN4(STUB,SYSCALL,REG1,REG2,REG3,REG4) \
>> 40 .align 32; \
>> 41 .globl STUB; \
>> 42 STUB: sra REG1, 0, REG1; \
>> 43 sethi %hi(SYSCALL), %g1; \
>> 44 sra REG2, 0, REG2; \
>> 45 sra REG3, 0, REG3; \
>> 46 jmpl %g1 + %lo(SYSCALL), %g0; \
>> 47 sra REG4, 0, REG4
>> 48
>> 49 SIGN1(sys32_exit, sparc_exit, %o0)
>> 50 SIGN1(sys32_exit_group, sys_exit_group, %o0)
>> 51 SIGN1(sys32_wait4, compat_sys_wait4, %o2)
>> 52 SIGN1(sys32_creat, sys_creat, %o1)
>> 53 SIGN1(sys32_mknod, sys_mknod, %o1)
>> 54 SIGN1(sys32_perfctr, sys_perfctr, %o0)
>> 55 SIGN1(sys32_umount, sys_umount, %o1)
>> 56 SIGN1(sys32_signal, sys_signal, %o0)
>> 57 SIGN1(sys32_access, sys_access, %o1)
>> 58 SIGN1(sys32_msync, sys_msync, %o2)
>> 59 SIGN2(sys32_reboot, sys_reboot, %o0, %o1)
>> 60 SIGN1(sys32_setitimer, compat_sys_setitimer, %o0)
>> 61 SIGN1(sys32_getitimer, compat_sys_getitimer, %o0)
>> 62 SIGN1(sys32_sethostname, sys_sethostname, %o1)
>> 63 SIGN1(sys32_swapon, sys_swapon, %o1)
>> 64 SIGN1(sys32_sigaction, compat_sys_sigaction, %o0)
>> 65 SIGN1(sys32_rt_sigaction, compat_sys_rt_sigaction, %o0)
>> 66 SIGN1(sys32_sigprocmask, compat_sys_sigprocmask, %o0)
>> 67 SIGN1(sys32_rt_sigprocmask, compat_sys_rt_sigprocmask, %o0)
>> 68 SIGN2(sys32_rt_sigqueueinfo, compat_sys_rt_sigqueueinfo, %o0, %o1)
>> 69 SIGN1(sys32_getrusage, compat_sys_getrusage, %o0)
>> 70 SIGN1(sys32_setxattr, sys_setxattr, %o4)
>> 71 SIGN1(sys32_lsetxattr, sys_lsetxattr, %o4)
>> 72 SIGN1(sys32_fsetxattr, sys_fsetxattr, %o4)
>> 73 SIGN1(sys32_fgetxattr, sys_fgetxattr, %o0)
>> 74 SIGN1(sys32_flistxattr, sys_flistxattr, %o0)
>> 75 SIGN1(sys32_fremovexattr, sys_fremovexattr, %o0)
>> 76 SIGN2(sys32_tkill, sys_tkill, %o0, %o1)
>> 77 SIGN1(sys32_epoll_create, sys_epoll_create, %o0)
>> 78 SIGN3(sys32_epoll_ctl, sys_epoll_ctl, %o0, %o1, %o2)
>> 79 SIGN3(sys32_epoll_wait, sys_epoll_wait, %o0, %o2, %o3)
>> 80 SIGN1(sys32_readahead, compat_sys_readahead, %o0)
>> 81 SIGN2(sys32_fadvise64, compat_sys_fadvise64, %o0, %o4)
>> 82 SIGN2(sys32_fadvise64_64, compat_sys_fadvise64_64, %o0, %o5)
>> 83 SIGN2(sys32_bdflush, sys_bdflush, %o0, %o1)
>> 84 SIGN1(sys32_mlockall, sys_mlockall, %o0)
>> 85 SIGN1(sys32_nfsservctl, compat_sys_nfsservctl, %o0)
>> 86 SIGN1(sys32_clock_nanosleep, compat_sys_clock_nanosleep, %o1)
>> 87 SIGN1(sys32_timer_settime, compat_sys_timer_settime, %o1)
>> 88 SIGN1(sys32_io_submit, compat_sys_io_submit, %o1)
>> 89 SIGN1(sys32_mq_open, compat_sys_mq_open, %o1)
>> 90 SIGN1(sys32_select, compat_sys_select, %o0)
>> 91 SIGN1(sys32_mkdir, sys_mkdir, %o1)
>> 92 SIGN3(sys32_futex, compat_sys_futex, %o1, %o2, %o5)
>> 93 SIGN1(sys32_sysfs, compat_sys_sysfs, %o0)
>> 94 SIGN2(sys32_sendfile, compat_sys_sendfile, %o0, %o1)
>> 95 SIGN2(sys32_sendfile64, compat_sys_sendfile64, %o0, %o1)
>> 96 SIGN1(sys32_prctl, sys_prctl, %o0)
>> 97 SIGN1(sys32_sched_rr_get_interval, compat_sys_sched_rr_get_interval, %o0)
>> 98 SIGN2(sys32_waitpid, sys_waitpid, %o0, %o2)
>> 99 SIGN1(sys32_getgroups, sys_getgroups, %o0)
>> 100 SIGN1(sys32_getpgid, sys_getpgid, %o0)
>> 101 SIGN2(sys32_getpriority, sys_getpriority, %o0, %o1)
>> 102 SIGN1(sys32_getsid, sys_getsid, %o0)
>> 103 SIGN2(sys32_kill, sys_kill, %o0, %o1)
>> 104 SIGN1(sys32_nice, sys_nice, %o0)
>> 105 SIGN1(sys32_lseek, sys_lseek, %o1)
>> 106 SIGN2(sys32_open, sparc32_open, %o1, %o2)
>> 107 SIGN1(sys32_readlink, sys_readlink, %o2)
>> 108 SIGN1(sys32_sched_get_priority_max, sys_sched_get_priority_max, %o0)
>> 109 SIGN1(sys32_sched_get_priority_min, sys_sched_get_priority_min, %o0)
>> 110 SIGN1(sys32_sched_getparam, sys_sched_getparam, %o0)
>> 111 SIGN1(sys32_sched_getscheduler, sys_sched_getscheduler, %o0)
>> 112 SIGN1(sys32_sched_setparam, sys_sched_setparam, %o0)
>> 113 SIGN2(sys32_sched_setscheduler, sys_sched_setscheduler, %o0, %o1)
>> 114 SIGN1(sys32_getdomainname, sys_getdomainname, %o1)
>> 115 SIGN1(sys32_setdomainname, sys_setdomainname, %o1)
>> 116 SIGN1(sys32_setgroups, sys_setgroups, %o0)
>> 117 SIGN2(sys32_setpgid, sys_setpgid, %o0, %o1)
>> 118 SIGN3(sys32_setpriority, sys_setpriority, %o0, %o1, %o2)
>> 119 SIGN1(sys32_ssetmask, sys_ssetmask, %o0)
>> 120 SIGN2(sys32_syslog, sys_syslog, %o0, %o2)
>> 121 SIGN1(sys32_umask, sys_umask, %o0)
>> 122 SIGN3(sys32_tgkill, sys_tgkill, %o0, %o1, %o2)
>> 123 SIGN1(sys32_sendto, sys_sendto, %o0)
>> 124 SIGN1(sys32_recvfrom, compat_sys_recvfrom, %o0)
>> 125 SIGN3(sys32_socket, sys_socket, %o0, %o1, %o2)
>> 126 SIGN2(sys32_connect, sys_connect, %o0, %o2)
>> 127 SIGN2(sys32_bind, sys_bind, %o0, %o2)
>> 128 SIGN2(sys32_listen, sys_listen, %o0, %o1)
>> 129 SIGN1(sys32_recvmsg, compat_sys_recvmsg, %o0)
>> 130 SIGN1(sys32_sendmsg, compat_sys_sendmsg, %o0)
>> 131 SIGN2(sys32_shutdown, sys_shutdown, %o0, %o1)
>> 132 SIGN3(sys32_socketpair, sys_socketpair, %o0, %o1, %o2)
>> 133 SIGN1(sys32_getpeername, sys_getpeername, %o0)
>> 134 SIGN1(sys32_getsockname, sys_getsockname, %o0)
>> 135 SIGN2(sys32_ioprio_get, sys_ioprio_get, %o0, %o1)
>> 136 SIGN3(sys32_ioprio_set, sys_ioprio_set, %o0, %o1, %o2)
>> 137 SIGN2(sys32_splice, sys_splice, %o0, %o2)
>> 138 SIGN2(sys32_sync_file_range, compat_sync_file_range, %o0, %o5)
>> 139 SIGN2(sys32_tee, sys_tee, %o0, %o1)
>> 140 SIGN1(sys32_vmsplice, compat_sys_vmsplice, %o0)
>> 141 SIGN1(sys32_truncate, sys_truncate, %o1)
>> 142 SIGN1(sys32_ftruncate, sys_ftruncate, %o1)
>> 143
16 .globl sys32_mmap2 144 .globl sys32_mmap2
17 sys32_mmap2: 145 sys32_mmap2:
18 sethi %hi(sys_mmap), %g1 146 sethi %hi(sys_mmap), %g1
19 jmpl %g1 + %lo(sys_mmap), % 147 jmpl %g1 + %lo(sys_mmap), %g0
20 sllx %o5, 12, %o5 148 sllx %o5, 12, %o5
>> 149
>> 150 .align 32
>> 151 .globl sys32_socketcall
>> 152 sys32_socketcall: /* %o0=call, %o1=args */
>> 153 cmp %o0, 1
>> 154 bl,pn %xcc, do_einval
>> 155 cmp %o0, 18
>> 156 bg,pn %xcc, do_einval
>> 157 sub %o0, 1, %o0
>> 158 sllx %o0, 5, %o0
>> 159 sethi %hi(__socketcall_table_begin), %g2
>> 160 or %g2, %lo(__socketcall_table_begin), %g2
>> 161 jmpl %g2 + %o0, %g0
>> 162 nop
>> 163 do_einval:
>> 164 retl
>> 165 mov -EINVAL, %o0
>> 166
>> 167 .align 32
>> 168 __socketcall_table_begin:
>> 169
>> 170 /* Each entry is exactly 32 bytes. */
>> 171 do_sys_socket: /* sys_socket(int, int, int) */
>> 172 1: ldswa [%o1 + 0x0] %asi, %o0
>> 173 sethi %hi(sys_socket), %g1
>> 174 2: ldswa [%o1 + 0x8] %asi, %o2
>> 175 jmpl %g1 + %lo(sys_socket), %g0
>> 176 3: ldswa [%o1 + 0x4] %asi, %o1
>> 177 nop
>> 178 nop
>> 179 nop
>> 180 do_sys_bind: /* sys_bind(int fd, struct sockaddr *, int) */
>> 181 4: ldswa [%o1 + 0x0] %asi, %o0
>> 182 sethi %hi(sys_bind), %g1
>> 183 5: ldswa [%o1 + 0x8] %asi, %o2
>> 184 jmpl %g1 + %lo(sys_bind), %g0
>> 185 6: lduwa [%o1 + 0x4] %asi, %o1
>> 186 nop
>> 187 nop
>> 188 nop
>> 189 do_sys_connect: /* sys_connect(int, struct sockaddr *, int) */
>> 190 7: ldswa [%o1 + 0x0] %asi, %o0
>> 191 sethi %hi(sys_connect), %g1
>> 192 8: ldswa [%o1 + 0x8] %asi, %o2
>> 193 jmpl %g1 + %lo(sys_connect), %g0
>> 194 9: lduwa [%o1 + 0x4] %asi, %o1
>> 195 nop
>> 196 nop
>> 197 nop
>> 198 do_sys_listen: /* sys_listen(int, int) */
>> 199 10: ldswa [%o1 + 0x0] %asi, %o0
>> 200 sethi %hi(sys_listen), %g1
>> 201 jmpl %g1 + %lo(sys_listen), %g0
>> 202 11: ldswa [%o1 + 0x4] %asi, %o1
>> 203 nop
>> 204 nop
>> 205 nop
>> 206 nop
>> 207 do_sys_accept: /* sys_accept(int, struct sockaddr *, int *) */
>> 208 12: ldswa [%o1 + 0x0] %asi, %o0
>> 209 sethi %hi(sys_accept), %g1
>> 210 13: lduwa [%o1 + 0x8] %asi, %o2
>> 211 jmpl %g1 + %lo(sys_accept), %g0
>> 212 14: lduwa [%o1 + 0x4] %asi, %o1
>> 213 nop
>> 214 nop
>> 215 nop
>> 216 do_sys_getsockname: /* sys_getsockname(int, struct sockaddr *, int *) */
>> 217 15: ldswa [%o1 + 0x0] %asi, %o0
>> 218 sethi %hi(sys_getsockname), %g1
>> 219 16: lduwa [%o1 + 0x8] %asi, %o2
>> 220 jmpl %g1 + %lo(sys_getsockname), %g0
>> 221 17: lduwa [%o1 + 0x4] %asi, %o1
>> 222 nop
>> 223 nop
>> 224 nop
>> 225 do_sys_getpeername: /* sys_getpeername(int, struct sockaddr *, int *) */
>> 226 18: ldswa [%o1 + 0x0] %asi, %o0
>> 227 sethi %hi(sys_getpeername), %g1
>> 228 19: lduwa [%o1 + 0x8] %asi, %o2
>> 229 jmpl %g1 + %lo(sys_getpeername), %g0
>> 230 20: lduwa [%o1 + 0x4] %asi, %o1
>> 231 nop
>> 232 nop
>> 233 nop
>> 234 do_sys_socketpair: /* sys_socketpair(int, int, int, int *) */
>> 235 21: ldswa [%o1 + 0x0] %asi, %o0
>> 236 sethi %hi(sys_socketpair), %g1
>> 237 22: ldswa [%o1 + 0x8] %asi, %o2
>> 238 23: lduwa [%o1 + 0xc] %asi, %o3
>> 239 jmpl %g1 + %lo(sys_socketpair), %g0
>> 240 24: ldswa [%o1 + 0x4] %asi, %o1
>> 241 nop
>> 242 nop
>> 243 do_sys_send: /* sys_send(int, void *, size_t, unsigned int) */
>> 244 25: ldswa [%o1 + 0x0] %asi, %o0
>> 245 sethi %hi(sys_send), %g1
>> 246 26: lduwa [%o1 + 0x8] %asi, %o2
>> 247 27: lduwa [%o1 + 0xc] %asi, %o3
>> 248 jmpl %g1 + %lo(sys_send), %g0
>> 249 28: lduwa [%o1 + 0x4] %asi, %o1
>> 250 nop
>> 251 nop
>> 252 do_sys_recv: /* sys_recv(int, void *, size_t, unsigned int) */
>> 253 29: ldswa [%o1 + 0x0] %asi, %o0
>> 254 sethi %hi(sys_recv), %g1
>> 255 30: lduwa [%o1 + 0x8] %asi, %o2
>> 256 31: lduwa [%o1 + 0xc] %asi, %o3
>> 257 jmpl %g1 + %lo(sys_recv), %g0
>> 258 32: lduwa [%o1 + 0x4] %asi, %o1
>> 259 nop
>> 260 nop
>> 261 do_sys_sendto: /* sys_sendto(int, u32, compat_size_t, unsigned int, u32, int) */
>> 262 33: ldswa [%o1 + 0x0] %asi, %o0
>> 263 sethi %hi(sys_sendto), %g1
>> 264 34: lduwa [%o1 + 0x8] %asi, %o2
>> 265 35: lduwa [%o1 + 0xc] %asi, %o3
>> 266 36: lduwa [%o1 + 0x10] %asi, %o4
>> 267 37: ldswa [%o1 + 0x14] %asi, %o5
>> 268 jmpl %g1 + %lo(sys_sendto), %g0
>> 269 38: lduwa [%o1 + 0x4] %asi, %o1
>> 270 do_sys_recvfrom: /* sys_recvfrom(int, u32, compat_size_t, unsigned int, u32, u32) */
>> 271 39: ldswa [%o1 + 0x0] %asi, %o0
>> 272 sethi %hi(sys_recvfrom), %g1
>> 273 40: lduwa [%o1 + 0x8] %asi, %o2
>> 274 41: lduwa [%o1 + 0xc] %asi, %o3
>> 275 42: lduwa [%o1 + 0x10] %asi, %o4
>> 276 43: lduwa [%o1 + 0x14] %asi, %o5
>> 277 jmpl %g1 + %lo(sys_recvfrom), %g0
>> 278 44: lduwa [%o1 + 0x4] %asi, %o1
>> 279 do_sys_shutdown: /* sys_shutdown(int, int) */
>> 280 45: ldswa [%o1 + 0x0] %asi, %o0
>> 281 sethi %hi(sys_shutdown), %g1
>> 282 jmpl %g1 + %lo(sys_shutdown), %g0
>> 283 46: ldswa [%o1 + 0x4] %asi, %o1
>> 284 nop
>> 285 nop
>> 286 nop
>> 287 nop
>> 288 do_sys_setsockopt: /* compat_sys_setsockopt(int, int, int, char *, int) */
>> 289 47: ldswa [%o1 + 0x0] %asi, %o0
>> 290 sethi %hi(compat_sys_setsockopt), %g1
>> 291 48: ldswa [%o1 + 0x8] %asi, %o2
>> 292 49: lduwa [%o1 + 0xc] %asi, %o3
>> 293 50: ldswa [%o1 + 0x10] %asi, %o4
>> 294 jmpl %g1 + %lo(compat_sys_setsockopt), %g0
>> 295 51: ldswa [%o1 + 0x4] %asi, %o1
>> 296 nop
>> 297 do_sys_getsockopt: /* compat_sys_getsockopt(int, int, int, u32, u32) */
>> 298 52: ldswa [%o1 + 0x0] %asi, %o0
>> 299 sethi %hi(compat_sys_getsockopt), %g1
>> 300 53: ldswa [%o1 + 0x8] %asi, %o2
>> 301 54: lduwa [%o1 + 0xc] %asi, %o3
>> 302 55: lduwa [%o1 + 0x10] %asi, %o4
>> 303 jmpl %g1 + %lo(compat_sys_getsockopt), %g0
>> 304 56: ldswa [%o1 + 0x4] %asi, %o1
>> 305 nop
>> 306 do_sys_sendmsg: /* compat_sys_sendmsg(int, struct compat_msghdr *, unsigned int) */
>> 307 57: ldswa [%o1 + 0x0] %asi, %o0
>> 308 sethi %hi(compat_sys_sendmsg), %g1
>> 309 58: lduwa [%o1 + 0x8] %asi, %o2
>> 310 jmpl %g1 + %lo(compat_sys_sendmsg), %g0
>> 311 59: lduwa [%o1 + 0x4] %asi, %o1
>> 312 nop
>> 313 nop
>> 314 nop
>> 315 do_sys_recvmsg: /* compat_sys_recvmsg(int, struct compat_msghdr *, unsigned int) */
>> 316 60: ldswa [%o1 + 0x0] %asi, %o0
>> 317 sethi %hi(compat_sys_recvmsg), %g1
>> 318 61: lduwa [%o1 + 0x8] %asi, %o2
>> 319 jmpl %g1 + %lo(compat_sys_recvmsg), %g0
>> 320 62: lduwa [%o1 + 0x4] %asi, %o1
>> 321 nop
>> 322 nop
>> 323 nop
>> 324 do_sys_accept4: /* sys_accept4(int, struct sockaddr *, int *, int) */
>> 325 63: ldswa [%o1 + 0x0] %asi, %o0
>> 326 sethi %hi(sys_accept4), %g1
>> 327 64: lduwa [%o1 + 0x8] %asi, %o2
>> 328 65: ldswa [%o1 + 0xc] %asi, %o3
>> 329 jmpl %g1 + %lo(sys_accept4), %g0
>> 330 66: lduwa [%o1 + 0x4] %asi, %o1
>> 331 nop
>> 332 nop
>> 333
>> 334 .section __ex_table,"a"
>> 335 .align 4
>> 336 .word 1b, __retl_efault, 2b, __retl_efault
>> 337 .word 3b, __retl_efault, 4b, __retl_efault
>> 338 .word 5b, __retl_efault, 6b, __retl_efault
>> 339 .word 7b, __retl_efault, 8b, __retl_efault
>> 340 .word 9b, __retl_efault, 10b, __retl_efault
>> 341 .word 11b, __retl_efault, 12b, __retl_efault
>> 342 .word 13b, __retl_efault, 14b, __retl_efault
>> 343 .word 15b, __retl_efault, 16b, __retl_efault
>> 344 .word 17b, __retl_efault, 18b, __retl_efault
>> 345 .word 19b, __retl_efault, 20b, __retl_efault
>> 346 .word 21b, __retl_efault, 22b, __retl_efault
>> 347 .word 23b, __retl_efault, 24b, __retl_efault
>> 348 .word 25b, __retl_efault, 26b, __retl_efault
>> 349 .word 27b, __retl_efault, 28b, __retl_efault
>> 350 .word 29b, __retl_efault, 30b, __retl_efault
>> 351 .word 31b, __retl_efault, 32b, __retl_efault
>> 352 .word 33b, __retl_efault, 34b, __retl_efault
>> 353 .word 35b, __retl_efault, 36b, __retl_efault
>> 354 .word 37b, __retl_efault, 38b, __retl_efault
>> 355 .word 39b, __retl_efault, 40b, __retl_efault
>> 356 .word 41b, __retl_efault, 42b, __retl_efault
>> 357 .word 43b, __retl_efault, 44b, __retl_efault
>> 358 .word 45b, __retl_efault, 46b, __retl_efault
>> 359 .word 47b, __retl_efault, 48b, __retl_efault
>> 360 .word 49b, __retl_efault, 50b, __retl_efault
>> 361 .word 51b, __retl_efault, 52b, __retl_efault
>> 362 .word 53b, __retl_efault, 54b, __retl_efault
>> 363 .word 55b, __retl_efault, 56b, __retl_efault
>> 364 .word 57b, __retl_efault, 58b, __retl_efault
>> 365 .word 59b, __retl_efault, 60b, __retl_efault
>> 366 .word 61b, __retl_efault, 62b, __retl_efault
>> 367 .word 63b, __retl_efault, 64b, __retl_efault
>> 368 .word 65b, __retl_efault, 66b, __retl_efault
>> 369 .previous
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