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 SIGN1(sys32_readahead, compat_sys_readahead, %o0)
>> 40 SIGN2(sys32_fadvise64, compat_sys_fadvise64, %o0, %o4)
>> 41 SIGN2(sys32_fadvise64_64, compat_sys_fadvise64_64, %o0, %o5)
>> 42 SIGN1(sys32_clock_nanosleep, compat_sys_clock_nanosleep, %o1)
>> 43 SIGN1(sys32_timer_settime, compat_sys_timer_settime, %o1)
>> 44 SIGN1(sys32_io_submit, compat_sys_io_submit, %o1)
>> 45 SIGN1(sys32_mq_open, compat_sys_mq_open, %o1)
>> 46 SIGN1(sys32_select, compat_sys_select, %o0)
>> 47 SIGN1(sys32_futex, compat_sys_futex, %o1)
>> 48 SIGN1(sys32_recvfrom, compat_sys_recvfrom, %o0)
>> 49 SIGN1(sys32_recvmsg, compat_sys_recvmsg, %o0)
>> 50 SIGN1(sys32_sendmsg, compat_sys_sendmsg, %o0)
>> 51 SIGN2(sys32_renameat2, sys_renameat2, %o0, %o2)
>> 52
16 .globl sys32_mmap2 53 .globl sys32_mmap2
17 sys32_mmap2: 54 sys32_mmap2:
18 sethi %hi(sys_mmap), %g1 55 sethi %hi(sys_mmap), %g1
19 jmpl %g1 + %lo(sys_mmap), % 56 jmpl %g1 + %lo(sys_mmap), %g0
20 sllx %o5, 12, %o5 57 sllx %o5, 12, %o5
>> 58
>> 59 .align 32
>> 60 .globl sys32_socketcall
>> 61 sys32_socketcall: /* %o0=call, %o1=args */
>> 62 cmp %o0, 1
>> 63 bl,pn %xcc, do_einval
>> 64 cmp %o0, 18
>> 65 bg,pn %xcc, do_einval
>> 66 sub %o0, 1, %o0
>> 67 sllx %o0, 5, %o0
>> 68 sethi %hi(__socketcall_table_begin), %g2
>> 69 or %g2, %lo(__socketcall_table_begin), %g2
>> 70 jmpl %g2 + %o0, %g0
>> 71 nop
>> 72 do_einval:
>> 73 retl
>> 74 mov -EINVAL, %o0
>> 75
>> 76 .align 32
>> 77 __socketcall_table_begin:
>> 78
>> 79 /* Each entry is exactly 32 bytes. */
>> 80 do_sys_socket: /* sys_socket(int, int, int) */
>> 81 1: ldswa [%o1 + 0x0] %asi, %o0
>> 82 sethi %hi(sys_socket), %g1
>> 83 2: ldswa [%o1 + 0x8] %asi, %o2
>> 84 jmpl %g1 + %lo(sys_socket), %g0
>> 85 3: ldswa [%o1 + 0x4] %asi, %o1
>> 86 nop
>> 87 nop
>> 88 nop
>> 89 do_sys_bind: /* sys_bind(int fd, struct sockaddr *, int) */
>> 90 4: ldswa [%o1 + 0x0] %asi, %o0
>> 91 sethi %hi(sys_bind), %g1
>> 92 5: ldswa [%o1 + 0x8] %asi, %o2
>> 93 jmpl %g1 + %lo(sys_bind), %g0
>> 94 6: lduwa [%o1 + 0x4] %asi, %o1
>> 95 nop
>> 96 nop
>> 97 nop
>> 98 do_sys_connect: /* sys_connect(int, struct sockaddr *, int) */
>> 99 7: ldswa [%o1 + 0x0] %asi, %o0
>> 100 sethi %hi(sys_connect), %g1
>> 101 8: ldswa [%o1 + 0x8] %asi, %o2
>> 102 jmpl %g1 + %lo(sys_connect), %g0
>> 103 9: lduwa [%o1 + 0x4] %asi, %o1
>> 104 nop
>> 105 nop
>> 106 nop
>> 107 do_sys_listen: /* sys_listen(int, int) */
>> 108 10: ldswa [%o1 + 0x0] %asi, %o0
>> 109 sethi %hi(sys_listen), %g1
>> 110 jmpl %g1 + %lo(sys_listen), %g0
>> 111 11: ldswa [%o1 + 0x4] %asi, %o1
>> 112 nop
>> 113 nop
>> 114 nop
>> 115 nop
>> 116 do_sys_accept: /* sys_accept(int, struct sockaddr *, int *) */
>> 117 12: ldswa [%o1 + 0x0] %asi, %o0
>> 118 sethi %hi(sys_accept), %g1
>> 119 13: lduwa [%o1 + 0x8] %asi, %o2
>> 120 jmpl %g1 + %lo(sys_accept), %g0
>> 121 14: lduwa [%o1 + 0x4] %asi, %o1
>> 122 nop
>> 123 nop
>> 124 nop
>> 125 do_sys_getsockname: /* sys_getsockname(int, struct sockaddr *, int *) */
>> 126 15: ldswa [%o1 + 0x0] %asi, %o0
>> 127 sethi %hi(sys_getsockname), %g1
>> 128 16: lduwa [%o1 + 0x8] %asi, %o2
>> 129 jmpl %g1 + %lo(sys_getsockname), %g0
>> 130 17: lduwa [%o1 + 0x4] %asi, %o1
>> 131 nop
>> 132 nop
>> 133 nop
>> 134 do_sys_getpeername: /* sys_getpeername(int, struct sockaddr *, int *) */
>> 135 18: ldswa [%o1 + 0x0] %asi, %o0
>> 136 sethi %hi(sys_getpeername), %g1
>> 137 19: lduwa [%o1 + 0x8] %asi, %o2
>> 138 jmpl %g1 + %lo(sys_getpeername), %g0
>> 139 20: lduwa [%o1 + 0x4] %asi, %o1
>> 140 nop
>> 141 nop
>> 142 nop
>> 143 do_sys_socketpair: /* sys_socketpair(int, int, int, int *) */
>> 144 21: ldswa [%o1 + 0x0] %asi, %o0
>> 145 sethi %hi(sys_socketpair), %g1
>> 146 22: ldswa [%o1 + 0x8] %asi, %o2
>> 147 23: lduwa [%o1 + 0xc] %asi, %o3
>> 148 jmpl %g1 + %lo(sys_socketpair), %g0
>> 149 24: ldswa [%o1 + 0x4] %asi, %o1
>> 150 nop
>> 151 nop
>> 152 do_sys_send: /* sys_send(int, void *, size_t, unsigned int) */
>> 153 25: ldswa [%o1 + 0x0] %asi, %o0
>> 154 sethi %hi(sys_send), %g1
>> 155 26: lduwa [%o1 + 0x8] %asi, %o2
>> 156 27: lduwa [%o1 + 0xc] %asi, %o3
>> 157 jmpl %g1 + %lo(sys_send), %g0
>> 158 28: lduwa [%o1 + 0x4] %asi, %o1
>> 159 nop
>> 160 nop
>> 161 do_sys_recv: /* sys_recv(int, void *, size_t, unsigned int) */
>> 162 29: ldswa [%o1 + 0x0] %asi, %o0
>> 163 sethi %hi(sys_recv), %g1
>> 164 30: lduwa [%o1 + 0x8] %asi, %o2
>> 165 31: lduwa [%o1 + 0xc] %asi, %o3
>> 166 jmpl %g1 + %lo(sys_recv), %g0
>> 167 32: lduwa [%o1 + 0x4] %asi, %o1
>> 168 nop
>> 169 nop
>> 170 do_sys_sendto: /* sys_sendto(int, u32, compat_size_t, unsigned int, u32, int) */
>> 171 33: ldswa [%o1 + 0x0] %asi, %o0
>> 172 sethi %hi(sys_sendto), %g1
>> 173 34: lduwa [%o1 + 0x8] %asi, %o2
>> 174 35: lduwa [%o1 + 0xc] %asi, %o3
>> 175 36: lduwa [%o1 + 0x10] %asi, %o4
>> 176 37: ldswa [%o1 + 0x14] %asi, %o5
>> 177 jmpl %g1 + %lo(sys_sendto), %g0
>> 178 38: lduwa [%o1 + 0x4] %asi, %o1
>> 179 do_sys_recvfrom: /* sys_recvfrom(int, u32, compat_size_t, unsigned int, u32, u32) */
>> 180 39: ldswa [%o1 + 0x0] %asi, %o0
>> 181 sethi %hi(sys_recvfrom), %g1
>> 182 40: lduwa [%o1 + 0x8] %asi, %o2
>> 183 41: lduwa [%o1 + 0xc] %asi, %o3
>> 184 42: lduwa [%o1 + 0x10] %asi, %o4
>> 185 43: lduwa [%o1 + 0x14] %asi, %o5
>> 186 jmpl %g1 + %lo(sys_recvfrom), %g0
>> 187 44: lduwa [%o1 + 0x4] %asi, %o1
>> 188 do_sys_shutdown: /* sys_shutdown(int, int) */
>> 189 45: ldswa [%o1 + 0x0] %asi, %o0
>> 190 sethi %hi(sys_shutdown), %g1
>> 191 jmpl %g1 + %lo(sys_shutdown), %g0
>> 192 46: ldswa [%o1 + 0x4] %asi, %o1
>> 193 nop
>> 194 nop
>> 195 nop
>> 196 nop
>> 197 do_sys_setsockopt: /* compat_sys_setsockopt(int, int, int, char *, int) */
>> 198 47: ldswa [%o1 + 0x0] %asi, %o0
>> 199 sethi %hi(compat_sys_setsockopt), %g1
>> 200 48: ldswa [%o1 + 0x8] %asi, %o2
>> 201 49: lduwa [%o1 + 0xc] %asi, %o3
>> 202 50: ldswa [%o1 + 0x10] %asi, %o4
>> 203 jmpl %g1 + %lo(compat_sys_setsockopt), %g0
>> 204 51: ldswa [%o1 + 0x4] %asi, %o1
>> 205 nop
>> 206 do_sys_getsockopt: /* compat_sys_getsockopt(int, int, int, u32, u32) */
>> 207 52: ldswa [%o1 + 0x0] %asi, %o0
>> 208 sethi %hi(compat_sys_getsockopt), %g1
>> 209 53: ldswa [%o1 + 0x8] %asi, %o2
>> 210 54: lduwa [%o1 + 0xc] %asi, %o3
>> 211 55: lduwa [%o1 + 0x10] %asi, %o4
>> 212 jmpl %g1 + %lo(compat_sys_getsockopt), %g0
>> 213 56: ldswa [%o1 + 0x4] %asi, %o1
>> 214 nop
>> 215 do_sys_sendmsg: /* compat_sys_sendmsg(int, struct compat_msghdr *, unsigned int) */
>> 216 57: ldswa [%o1 + 0x0] %asi, %o0
>> 217 sethi %hi(compat_sys_sendmsg), %g1
>> 218 58: lduwa [%o1 + 0x8] %asi, %o2
>> 219 jmpl %g1 + %lo(compat_sys_sendmsg), %g0
>> 220 59: lduwa [%o1 + 0x4] %asi, %o1
>> 221 nop
>> 222 nop
>> 223 nop
>> 224 do_sys_recvmsg: /* compat_sys_recvmsg(int, struct compat_msghdr *, unsigned int) */
>> 225 60: ldswa [%o1 + 0x0] %asi, %o0
>> 226 sethi %hi(compat_sys_recvmsg), %g1
>> 227 61: lduwa [%o1 + 0x8] %asi, %o2
>> 228 jmpl %g1 + %lo(compat_sys_recvmsg), %g0
>> 229 62: lduwa [%o1 + 0x4] %asi, %o1
>> 230 nop
>> 231 nop
>> 232 nop
>> 233 do_sys_accept4: /* sys_accept4(int, struct sockaddr *, int *, int) */
>> 234 63: ldswa [%o1 + 0x0] %asi, %o0
>> 235 sethi %hi(sys_accept4), %g1
>> 236 64: lduwa [%o1 + 0x8] %asi, %o2
>> 237 65: ldswa [%o1 + 0xc] %asi, %o3
>> 238 jmpl %g1 + %lo(sys_accept4), %g0
>> 239 66: lduwa [%o1 + 0x4] %asi, %o1
>> 240 nop
>> 241 nop
>> 242
>> 243 .section __ex_table,"a"
>> 244 .align 4
>> 245 .word 1b, __retl_efault, 2b, __retl_efault
>> 246 .word 3b, __retl_efault, 4b, __retl_efault
>> 247 .word 5b, __retl_efault, 6b, __retl_efault
>> 248 .word 7b, __retl_efault, 8b, __retl_efault
>> 249 .word 9b, __retl_efault, 10b, __retl_efault
>> 250 .word 11b, __retl_efault, 12b, __retl_efault
>> 251 .word 13b, __retl_efault, 14b, __retl_efault
>> 252 .word 15b, __retl_efault, 16b, __retl_efault
>> 253 .word 17b, __retl_efault, 18b, __retl_efault
>> 254 .word 19b, __retl_efault, 20b, __retl_efault
>> 255 .word 21b, __retl_efault, 22b, __retl_efault
>> 256 .word 23b, __retl_efault, 24b, __retl_efault
>> 257 .word 25b, __retl_efault, 26b, __retl_efault
>> 258 .word 27b, __retl_efault, 28b, __retl_efault
>> 259 .word 29b, __retl_efault, 30b, __retl_efault
>> 260 .word 31b, __retl_efault, 32b, __retl_efault
>> 261 .word 33b, __retl_efault, 34b, __retl_efault
>> 262 .word 35b, __retl_efault, 36b, __retl_efault
>> 263 .word 37b, __retl_efault, 38b, __retl_efault
>> 264 .word 39b, __retl_efault, 40b, __retl_efault
>> 265 .word 41b, __retl_efault, 42b, __retl_efault
>> 266 .word 43b, __retl_efault, 44b, __retl_efault
>> 267 .word 45b, __retl_efault, 46b, __retl_efault
>> 268 .word 47b, __retl_efault, 48b, __retl_efault
>> 269 .word 49b, __retl_efault, 50b, __retl_efault
>> 270 .word 51b, __retl_efault, 52b, __retl_efault
>> 271 .word 53b, __retl_efault, 54b, __retl_efault
>> 272 .word 55b, __retl_efault, 56b, __retl_efault
>> 273 .word 57b, __retl_efault, 58b, __retl_efault
>> 274 .word 59b, __retl_efault, 60b, __retl_efault
>> 275 .word 61b, __retl_efault, 62b, __retl_efault
>> 276 .word 63b, __retl_efault, 64b, __retl_efault
>> 277 .word 65b, __retl_efault, 66b, __retl_efault
>> 278 .previous
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