1 /* SPDX-License-Identifier: GPL-2.0 */ 1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* 2 /*
3 * sys32.S: I-cache tricks for 32-bit compatib 3 * sys32.S: I-cache tricks for 32-bit compatibility layer simple
4 * conversions. 4 * conversions.
5 * 5 *
6 * Copyright (C) 1997 David S. Miller (davem@c 6 * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
7 * Copyright (C) 1998 Jakub Jelinek (jj@ultr 7 * Copyright (C) 1998 Jakub Jelinek (jj@ultra.linux.cz)
8 */ 8 */
9 9
10 #include <asm/errno.h> 10 #include <asm/errno.h>
11 11
12 /* NOTE: call as jump breaks return stack, we 12 /* NOTE: call as jump breaks return stack, we have to avoid that */
13 13
14 .text 14 .text
15 15
>> 16 #define SIGN1(STUB,SYSCALL,REG1) \
>> 17 .align 32; \
>> 18 .globl STUB; \
>> 19 STUB: sethi %hi(SYSCALL), %g1; \
>> 20 jmpl %g1 + %lo(SYSCALL), %g0; \
>> 21 sra REG1, 0, REG1
>> 22
>> 23 #define SIGN2(STUB,SYSCALL,REG1,REG2) \
>> 24 .align 32; \
>> 25 .globl STUB; \
>> 26 STUB: sethi %hi(SYSCALL), %g1; \
>> 27 sra REG1, 0, REG1; \
>> 28 jmpl %g1 + %lo(SYSCALL), %g0; \
>> 29 sra REG2, 0, REG2
>> 30
>> 31 #define SIGN3(STUB,SYSCALL,REG1,REG2,REG3) \
>> 32 .align 32; \
>> 33 .globl STUB; \
>> 34 STUB: sra REG1, 0, REG1; \
>> 35 sethi %hi(SYSCALL), %g1; \
>> 36 sra REG2, 0, REG2; \
>> 37 jmpl %g1 + %lo(SYSCALL), %g0; \
>> 38 sra REG3, 0, REG3
>> 39
>> 40 SIGN1(sys32_readahead, compat_sys_readahead, %o0)
>> 41 SIGN2(sys32_fadvise64, compat_sys_fadvise64, %o0, %o4)
>> 42 SIGN2(sys32_fadvise64_64, compat_sys_fadvise64_64, %o0, %o5)
>> 43 SIGN1(sys32_clock_nanosleep, compat_sys_clock_nanosleep, %o1)
>> 44 SIGN1(sys32_timer_settime, compat_sys_timer_settime, %o1)
>> 45 SIGN1(sys32_io_submit, compat_sys_io_submit, %o1)
>> 46 SIGN1(sys32_mq_open, compat_sys_mq_open, %o1)
>> 47 SIGN1(sys32_select, compat_sys_select, %o0)
>> 48 SIGN1(sys32_futex, compat_sys_futex, %o1)
>> 49 SIGN1(sys32_recvfrom, compat_sys_recvfrom, %o0)
>> 50 SIGN1(sys32_recvmsg, compat_sys_recvmsg, %o0)
>> 51 SIGN1(sys32_sendmsg, compat_sys_sendmsg, %o0)
>> 52 SIGN2(sys32_renameat2, sys_renameat2, %o0, %o2)
>> 53
16 .globl sys32_mmap2 54 .globl sys32_mmap2
17 sys32_mmap2: 55 sys32_mmap2:
18 sethi %hi(sys_mmap), %g1 56 sethi %hi(sys_mmap), %g1
19 jmpl %g1 + %lo(sys_mmap), % 57 jmpl %g1 + %lo(sys_mmap), %g0
20 sllx %o5, 12, %o5 58 sllx %o5, 12, %o5
>> 59
>> 60 .align 32
>> 61 .globl sys32_socketcall
>> 62 sys32_socketcall: /* %o0=call, %o1=args */
>> 63 cmp %o0, 1
>> 64 bl,pn %xcc, do_einval
>> 65 cmp %o0, 18
>> 66 bg,pn %xcc, do_einval
>> 67 sub %o0, 1, %o0
>> 68 sllx %o0, 5, %o0
>> 69 sethi %hi(__socketcall_table_begin), %g2
>> 70 or %g2, %lo(__socketcall_table_begin), %g2
>> 71 jmpl %g2 + %o0, %g0
>> 72 nop
>> 73 do_einval:
>> 74 retl
>> 75 mov -EINVAL, %o0
>> 76
>> 77 .align 32
>> 78 __socketcall_table_begin:
>> 79
>> 80 /* Each entry is exactly 32 bytes. */
>> 81 do_sys_socket: /* sys_socket(int, int, int) */
>> 82 1: ldswa [%o1 + 0x0] %asi, %o0
>> 83 sethi %hi(sys_socket), %g1
>> 84 2: ldswa [%o1 + 0x8] %asi, %o2
>> 85 jmpl %g1 + %lo(sys_socket), %g0
>> 86 3: ldswa [%o1 + 0x4] %asi, %o1
>> 87 nop
>> 88 nop
>> 89 nop
>> 90 do_sys_bind: /* sys_bind(int fd, struct sockaddr *, int) */
>> 91 4: ldswa [%o1 + 0x0] %asi, %o0
>> 92 sethi %hi(sys_bind), %g1
>> 93 5: ldswa [%o1 + 0x8] %asi, %o2
>> 94 jmpl %g1 + %lo(sys_bind), %g0
>> 95 6: lduwa [%o1 + 0x4] %asi, %o1
>> 96 nop
>> 97 nop
>> 98 nop
>> 99 do_sys_connect: /* sys_connect(int, struct sockaddr *, int) */
>> 100 7: ldswa [%o1 + 0x0] %asi, %o0
>> 101 sethi %hi(sys_connect), %g1
>> 102 8: ldswa [%o1 + 0x8] %asi, %o2
>> 103 jmpl %g1 + %lo(sys_connect), %g0
>> 104 9: lduwa [%o1 + 0x4] %asi, %o1
>> 105 nop
>> 106 nop
>> 107 nop
>> 108 do_sys_listen: /* sys_listen(int, int) */
>> 109 10: ldswa [%o1 + 0x0] %asi, %o0
>> 110 sethi %hi(sys_listen), %g1
>> 111 jmpl %g1 + %lo(sys_listen), %g0
>> 112 11: ldswa [%o1 + 0x4] %asi, %o1
>> 113 nop
>> 114 nop
>> 115 nop
>> 116 nop
>> 117 do_sys_accept: /* sys_accept(int, struct sockaddr *, int *) */
>> 118 12: ldswa [%o1 + 0x0] %asi, %o0
>> 119 sethi %hi(sys_accept), %g1
>> 120 13: lduwa [%o1 + 0x8] %asi, %o2
>> 121 jmpl %g1 + %lo(sys_accept), %g0
>> 122 14: lduwa [%o1 + 0x4] %asi, %o1
>> 123 nop
>> 124 nop
>> 125 nop
>> 126 do_sys_getsockname: /* sys_getsockname(int, struct sockaddr *, int *) */
>> 127 15: ldswa [%o1 + 0x0] %asi, %o0
>> 128 sethi %hi(sys_getsockname), %g1
>> 129 16: lduwa [%o1 + 0x8] %asi, %o2
>> 130 jmpl %g1 + %lo(sys_getsockname), %g0
>> 131 17: lduwa [%o1 + 0x4] %asi, %o1
>> 132 nop
>> 133 nop
>> 134 nop
>> 135 do_sys_getpeername: /* sys_getpeername(int, struct sockaddr *, int *) */
>> 136 18: ldswa [%o1 + 0x0] %asi, %o0
>> 137 sethi %hi(sys_getpeername), %g1
>> 138 19: lduwa [%o1 + 0x8] %asi, %o2
>> 139 jmpl %g1 + %lo(sys_getpeername), %g0
>> 140 20: lduwa [%o1 + 0x4] %asi, %o1
>> 141 nop
>> 142 nop
>> 143 nop
>> 144 do_sys_socketpair: /* sys_socketpair(int, int, int, int *) */
>> 145 21: ldswa [%o1 + 0x0] %asi, %o0
>> 146 sethi %hi(sys_socketpair), %g1
>> 147 22: ldswa [%o1 + 0x8] %asi, %o2
>> 148 23: lduwa [%o1 + 0xc] %asi, %o3
>> 149 jmpl %g1 + %lo(sys_socketpair), %g0
>> 150 24: ldswa [%o1 + 0x4] %asi, %o1
>> 151 nop
>> 152 nop
>> 153 do_sys_send: /* sys_send(int, void *, size_t, unsigned int) */
>> 154 25: ldswa [%o1 + 0x0] %asi, %o0
>> 155 sethi %hi(sys_send), %g1
>> 156 26: lduwa [%o1 + 0x8] %asi, %o2
>> 157 27: lduwa [%o1 + 0xc] %asi, %o3
>> 158 jmpl %g1 + %lo(sys_send), %g0
>> 159 28: lduwa [%o1 + 0x4] %asi, %o1
>> 160 nop
>> 161 nop
>> 162 do_sys_recv: /* sys_recv(int, void *, size_t, unsigned int) */
>> 163 29: ldswa [%o1 + 0x0] %asi, %o0
>> 164 sethi %hi(sys_recv), %g1
>> 165 30: lduwa [%o1 + 0x8] %asi, %o2
>> 166 31: lduwa [%o1 + 0xc] %asi, %o3
>> 167 jmpl %g1 + %lo(sys_recv), %g0
>> 168 32: lduwa [%o1 + 0x4] %asi, %o1
>> 169 nop
>> 170 nop
>> 171 do_sys_sendto: /* sys_sendto(int, u32, compat_size_t, unsigned int, u32, int) */
>> 172 33: ldswa [%o1 + 0x0] %asi, %o0
>> 173 sethi %hi(sys_sendto), %g1
>> 174 34: lduwa [%o1 + 0x8] %asi, %o2
>> 175 35: lduwa [%o1 + 0xc] %asi, %o3
>> 176 36: lduwa [%o1 + 0x10] %asi, %o4
>> 177 37: ldswa [%o1 + 0x14] %asi, %o5
>> 178 jmpl %g1 + %lo(sys_sendto), %g0
>> 179 38: lduwa [%o1 + 0x4] %asi, %o1
>> 180 do_sys_recvfrom: /* sys_recvfrom(int, u32, compat_size_t, unsigned int, u32, u32) */
>> 181 39: ldswa [%o1 + 0x0] %asi, %o0
>> 182 sethi %hi(sys_recvfrom), %g1
>> 183 40: lduwa [%o1 + 0x8] %asi, %o2
>> 184 41: lduwa [%o1 + 0xc] %asi, %o3
>> 185 42: lduwa [%o1 + 0x10] %asi, %o4
>> 186 43: lduwa [%o1 + 0x14] %asi, %o5
>> 187 jmpl %g1 + %lo(sys_recvfrom), %g0
>> 188 44: lduwa [%o1 + 0x4] %asi, %o1
>> 189 do_sys_shutdown: /* sys_shutdown(int, int) */
>> 190 45: ldswa [%o1 + 0x0] %asi, %o0
>> 191 sethi %hi(sys_shutdown), %g1
>> 192 jmpl %g1 + %lo(sys_shutdown), %g0
>> 193 46: ldswa [%o1 + 0x4] %asi, %o1
>> 194 nop
>> 195 nop
>> 196 nop
>> 197 nop
>> 198 do_sys_setsockopt: /* compat_sys_setsockopt(int, int, int, char *, int) */
>> 199 47: ldswa [%o1 + 0x0] %asi, %o0
>> 200 sethi %hi(compat_sys_setsockopt), %g1
>> 201 48: ldswa [%o1 + 0x8] %asi, %o2
>> 202 49: lduwa [%o1 + 0xc] %asi, %o3
>> 203 50: ldswa [%o1 + 0x10] %asi, %o4
>> 204 jmpl %g1 + %lo(compat_sys_setsockopt), %g0
>> 205 51: ldswa [%o1 + 0x4] %asi, %o1
>> 206 nop
>> 207 do_sys_getsockopt: /* compat_sys_getsockopt(int, int, int, u32, u32) */
>> 208 52: ldswa [%o1 + 0x0] %asi, %o0
>> 209 sethi %hi(compat_sys_getsockopt), %g1
>> 210 53: ldswa [%o1 + 0x8] %asi, %o2
>> 211 54: lduwa [%o1 + 0xc] %asi, %o3
>> 212 55: lduwa [%o1 + 0x10] %asi, %o4
>> 213 jmpl %g1 + %lo(compat_sys_getsockopt), %g0
>> 214 56: ldswa [%o1 + 0x4] %asi, %o1
>> 215 nop
>> 216 do_sys_sendmsg: /* compat_sys_sendmsg(int, struct compat_msghdr *, unsigned int) */
>> 217 57: ldswa [%o1 + 0x0] %asi, %o0
>> 218 sethi %hi(compat_sys_sendmsg), %g1
>> 219 58: lduwa [%o1 + 0x8] %asi, %o2
>> 220 jmpl %g1 + %lo(compat_sys_sendmsg), %g0
>> 221 59: lduwa [%o1 + 0x4] %asi, %o1
>> 222 nop
>> 223 nop
>> 224 nop
>> 225 do_sys_recvmsg: /* compat_sys_recvmsg(int, struct compat_msghdr *, unsigned int) */
>> 226 60: ldswa [%o1 + 0x0] %asi, %o0
>> 227 sethi %hi(compat_sys_recvmsg), %g1
>> 228 61: lduwa [%o1 + 0x8] %asi, %o2
>> 229 jmpl %g1 + %lo(compat_sys_recvmsg), %g0
>> 230 62: lduwa [%o1 + 0x4] %asi, %o1
>> 231 nop
>> 232 nop
>> 233 nop
>> 234 do_sys_accept4: /* sys_accept4(int, struct sockaddr *, int *, int) */
>> 235 63: ldswa [%o1 + 0x0] %asi, %o0
>> 236 sethi %hi(sys_accept4), %g1
>> 237 64: lduwa [%o1 + 0x8] %asi, %o2
>> 238 65: ldswa [%o1 + 0xc] %asi, %o3
>> 239 jmpl %g1 + %lo(sys_accept4), %g0
>> 240 66: lduwa [%o1 + 0x4] %asi, %o1
>> 241 nop
>> 242 nop
>> 243
>> 244 .section __ex_table,"a"
>> 245 .align 4
>> 246 .word 1b, __retl_efault, 2b, __retl_efault
>> 247 .word 3b, __retl_efault, 4b, __retl_efault
>> 248 .word 5b, __retl_efault, 6b, __retl_efault
>> 249 .word 7b, __retl_efault, 8b, __retl_efault
>> 250 .word 9b, __retl_efault, 10b, __retl_efault
>> 251 .word 11b, __retl_efault, 12b, __retl_efault
>> 252 .word 13b, __retl_efault, 14b, __retl_efault
>> 253 .word 15b, __retl_efault, 16b, __retl_efault
>> 254 .word 17b, __retl_efault, 18b, __retl_efault
>> 255 .word 19b, __retl_efault, 20b, __retl_efault
>> 256 .word 21b, __retl_efault, 22b, __retl_efault
>> 257 .word 23b, __retl_efault, 24b, __retl_efault
>> 258 .word 25b, __retl_efault, 26b, __retl_efault
>> 259 .word 27b, __retl_efault, 28b, __retl_efault
>> 260 .word 29b, __retl_efault, 30b, __retl_efault
>> 261 .word 31b, __retl_efault, 32b, __retl_efault
>> 262 .word 33b, __retl_efault, 34b, __retl_efault
>> 263 .word 35b, __retl_efault, 36b, __retl_efault
>> 264 .word 37b, __retl_efault, 38b, __retl_efault
>> 265 .word 39b, __retl_efault, 40b, __retl_efault
>> 266 .word 41b, __retl_efault, 42b, __retl_efault
>> 267 .word 43b, __retl_efault, 44b, __retl_efault
>> 268 .word 45b, __retl_efault, 46b, __retl_efault
>> 269 .word 47b, __retl_efault, 48b, __retl_efault
>> 270 .word 49b, __retl_efault, 50b, __retl_efault
>> 271 .word 51b, __retl_efault, 52b, __retl_efault
>> 272 .word 53b, __retl_efault, 54b, __retl_efault
>> 273 .word 55b, __retl_efault, 56b, __retl_efault
>> 274 .word 57b, __retl_efault, 58b, __retl_efault
>> 275 .word 59b, __retl_efault, 60b, __retl_efault
>> 276 .word 61b, __retl_efault, 62b, __retl_efault
>> 277 .word 63b, __retl_efault, 64b, __retl_efault
>> 278 .word 65b, __retl_efault, 66b, __retl_efault
>> 279 .previous
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