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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 | #ifndef _BITS_SYSCALLS_H #define _BITS_SYSCALLS_H #ifndef _SYSCALL_H # error "Never use <bits/syscalls.h> directly; include <sys/syscall.h> instead." #endif #include <sgidefs.h> #ifndef __ASSEMBLER__ #include <errno.h> /* * Import from: * glibc-ports/sysdeps/unix/sysv/linux/mips/mips32/sysdep.h * glibc-ports/sysdeps/unix/sysv/linux/mips/mips64/n32/sysdep.h * glibc-ports/sysdeps/unix/sysv/linux/mips/mips64/n64/sysdep.h */ /* Define a macro which expands into the inline wrapper code for a system call. */ #define INLINE_SYSCALL(name, nr, args...) \ ({ INTERNAL_SYSCALL_DECL(err); \ long result_var = INTERNAL_SYSCALL(name, err, nr, args); \ if ( INTERNAL_SYSCALL_ERROR_P (result_var, err) ) \ { \ __set_errno (INTERNAL_SYSCALL_ERRNO (result_var, err)); \ result_var = -1L; \ } \ result_var; }) #define INTERNAL_SYSCALL_DECL(err) long err attribute_unused #define INTERNAL_SYSCALL_ERROR_P(val, err) ((long) (err)) #define INTERNAL_SYSCALL_ERRNO(val, err) (val) #define INTERNAL_SYSCALL(name, err, nr, args...) \ internal_syscall##nr (, "li\t$2, %2\t\t\t# " #name "\n\t", \ "i" (SYS_ify (name)), err, args) #define INTERNAL_SYSCALL_NCS(number, err, nr, args...) \ internal_syscall##nr (= number, , "r" (__v0), err, args) #if _MIPS_SIM == _ABIO32 || _MIPS_SIM == _ABI64 # define ARG_TYPE long #else # define ARG_TYPE long long #endif #define internal_syscall0(ncs_init, cs_init, input, err, dummy...) \ ({ \ long _sys_result; \ \ { \ register ARG_TYPE __v0 __asm__("$2") ncs_init; \ register ARG_TYPE __a3 __asm__("$7"); \ __asm__ __volatile__ ( \ ".set\tnoreorder\n\t" \ cs_init \ "syscall\n\t" \ ".set reorder" \ : "=r" (__v0), "=r" (__a3) \ : input \ : __SYSCALL_CLOBBERS); \ err = __a3; \ _sys_result = __v0; \ } \ _sys_result; \ }) #define internal_syscall1(ncs_init, cs_init, input, err, arg1) \ ({ \ long _sys_result; \ \ { \ register ARG_TYPE __v0 __asm__("$2") ncs_init; \ register ARG_TYPE __a0 __asm__("$4") = (ARG_TYPE) arg1; \ register ARG_TYPE __a3 __asm__("$7"); \ __asm__ __volatile__ ( \ ".set\tnoreorder\n\t" \ cs_init \ "syscall\n\t" \ ".set reorder" \ : "=r" (__v0), "=r" (__a3) \ : input, "r" (__a0) \ : __SYSCALL_CLOBBERS); \ err = __a3; \ _sys_result = __v0; \ } \ _sys_result; \ }) #define internal_syscall2(ncs_init, cs_init, input, err, arg1, arg2) \ ({ \ long _sys_result; \ \ { \ register ARG_TYPE __v0 __asm__("$2") ncs_init; \ register ARG_TYPE __a0 __asm__("$4") = (ARG_TYPE) arg1; \ register ARG_TYPE __a1 __asm__("$5") = (ARG_TYPE) arg2; \ register ARG_TYPE __a3 __asm__("$7"); \ __asm__ __volatile__ ( \ ".set\tnoreorder\n\t" \ cs_init \ "syscall\n\t" \ ".set\treorder" \ : "=r" (__v0), "=r" (__a3) \ : input, "r" (__a0), "r" (__a1) \ : __SYSCALL_CLOBBERS); \ err = __a3; \ _sys_result = __v0; \ } \ _sys_result; \ }) #define internal_syscall3(ncs_init, cs_init, input, err, arg1, arg2, arg3)\ ({ \ long _sys_result; \ \ { \ register ARG_TYPE __v0 __asm__("$2") ncs_init; \ register ARG_TYPE __a0 __asm__("$4") = (ARG_TYPE) arg1; \ register ARG_TYPE __a1 __asm__("$5") = (ARG_TYPE) arg2; \ register ARG_TYPE __a2 __asm__("$6") = (ARG_TYPE) arg3; \ register ARG_TYPE __a3 __asm__("$7"); \ __asm__ __volatile__ ( \ ".set\tnoreorder\n\t" \ cs_init \ "syscall\n\t" \ ".set\treorder" \ : "=r" (__v0), "=r" (__a3) \ : input, "r" (__a0), "r" (__a1), "r" (__a2) \ : __SYSCALL_CLOBBERS); \ err = __a3; \ _sys_result = __v0; \ } \ _sys_result; \ }) #define internal_syscall4(ncs_init, cs_init, input, err, arg1, arg2, arg3, arg4)\ ({ \ long _sys_result; \ \ { \ register ARG_TYPE __v0 __asm__("$2") ncs_init; \ register ARG_TYPE __a0 __asm__("$4") = (ARG_TYPE) arg1; \ register ARG_TYPE __a1 __asm__("$5") = (ARG_TYPE) arg2; \ register ARG_TYPE __a2 __asm__("$6") = (ARG_TYPE) arg3; \ register ARG_TYPE __a3 __asm__("$7") = (ARG_TYPE) arg4; \ __asm__ __volatile__ ( \ ".set\tnoreorder\n\t" \ cs_init \ "syscall\n\t" \ ".set\treorder" \ : "=r" (__v0), "+r" (__a3) \ : input, "r" (__a0), "r" (__a1), "r" (__a2) \ : __SYSCALL_CLOBBERS); \ err = __a3; \ _sys_result = __v0; \ } \ _sys_result; \ }) #if _MIPS_SIM == _ABIO32 #include <alloca.h> /* We need to use a frame pointer for the functions in which we adjust $sp around the syscall, or debug information and unwind information will be $sp relative and thus wrong during the syscall. As of GCC 3.4.3, this is sufficient. */ #define FORCE_FRAME_POINTER alloca (4) #define internal_syscall5(ncs_init, cs_init, input, err, arg1, arg2, arg3, arg4, arg5)\ ({ \ long _sys_result; \ \ FORCE_FRAME_POINTER; \ { \ register long __v0 __asm__("$2") ncs_init; \ register long __a0 __asm__("$4") = (long) arg1; \ register long __a1 __asm__("$5") = (long) arg2; \ register long __a2 __asm__("$6") = (long) arg3; \ register long __a3 __asm__("$7") = (long) arg4; \ __asm__ __volatile__ ( \ ".set\tnoreorder\n\t" \ "subu\t$29, 32\n\t" \ "sw\t%6, 16($29)\n\t" \ cs_init \ "syscall\n\t" \ "addiu\t$29, 32\n\t" \ ".set\treorder" \ : "=r" (__v0), "+r" (__a3) \ : input, "r" (__a0), "r" (__a1), "r" (__a2), \ "r" ((long)arg5) \ : __SYSCALL_CLOBBERS); \ err = __a3; \ _sys_result = __v0; \ } \ _sys_result; \ }) #define internal_syscall6(ncs_init, cs_init, input, err, arg1, arg2, arg3, arg4, arg5, arg6)\ ({ \ long _sys_result; \ \ FORCE_FRAME_POINTER; \ { \ register long __v0 __asm__("$2") ncs_init; \ register long __a0 __asm__("$4") = (long) arg1; \ register long __a1 __asm__("$5") = (long) arg2; \ register long __a2 __asm__("$6") = (long) arg3; \ register long __a3 __asm__("$7") = (long) arg4; \ __asm__ __volatile__ ( \ ".set\tnoreorder\n\t" \ "subu\t$29, 32\n\t" \ "sw\t%6, 16($29)\n\t" \ "sw\t%7, 20($29)\n\t" \ cs_init \ "syscall\n\t" \ "addiu\t$29, 32\n\t" \ ".set\treorder" \ : "=r" (__v0), "+r" (__a3) \ : input, "r" (__a0), "r" (__a1), "r" (__a2), \ "r" ((long)arg5), "r" ((long)arg6) \ : __SYSCALL_CLOBBERS); \ err = __a3; \ _sys_result = __v0; \ } \ _sys_result; \ }) #define internal_syscall7(ncs_init, cs_init, input, err, arg1, arg2, arg3, arg4, arg5, arg6, arg7)\ ({ \ long _sys_result; \ \ FORCE_FRAME_POINTER; \ { \ register long __v0 __asm__("$2") ncs_init; \ register long __a0 __asm__("$4") = (long) arg1; \ register long __a1 __asm__("$5") = (long) arg2; \ register long __a2 __asm__("$6") = (long) arg3; \ register long __a3 __asm__("$7") = (long) arg4; \ __asm__ __volatile__ ( \ ".set\tnoreorder\n\t" \ "subu\t$29, 32\n\t" \ "sw\t%6, 16($29)\n\t" \ "sw\t%7, 20($29)\n\t" \ "sw\t%8, 24($29)\n\t" \ cs_init \ "syscall\n\t" \ "addiu\t$29, 32\n\t" \ ".set\treorder" \ : "=r" (__v0), "+r" (__a3) \ : input, "r" (__a0), "r" (__a1), "r" (__a2), \ "r" ((long)arg5), "r" ((long)arg6), "r" ((long)arg7) \ : __SYSCALL_CLOBBERS); \ err = __a3; \ _sys_result = __v0; \ } \ _sys_result; \ }) #define __SYSCALL_CLOBBERS "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13", \ "$14", "$15", "$24", "$25", "hi", "lo", "memory" #else /* N32 || N64 */ #define internal_syscall5(ncs_init, cs_init, input, err, arg1, arg2, arg3, arg4, arg5) \ ({ \ long _sys_result; \ \ { \ register ARG_TYPE __v0 __asm__("$2") ncs_init; \ register ARG_TYPE __a0 __asm__("$4") = (ARG_TYPE) arg1; \ register ARG_TYPE __a1 __asm__("$5") = (ARG_TYPE) arg2; \ register ARG_TYPE __a2 __asm__("$6") = (ARG_TYPE) arg3; \ register ARG_TYPE __a3 __asm__("$7") = (ARG_TYPE) arg4; \ register ARG_TYPE __a4 __asm__("$8") = (ARG_TYPE) arg5; \ __asm__ __volatile__ ( \ ".set\tnoreorder\n\t" \ cs_init \ "syscall\n\t" \ ".set\treorder" \ : "=r" (__v0), "+r" (__a3) \ : input, "r" (__a0), "r" (__a1), "r" (__a2), "r" (__a4) \ : __SYSCALL_CLOBBERS); \ err = __a3; \ _sys_result = __v0; \ } \ _sys_result; \ }) #define internal_syscall6(ncs_init, cs_init, input, err, arg1, arg2, arg3, arg4, arg5, arg6) \ ({ \ long _sys_result; \ \ { \ register ARG_TYPE __v0 __asm__("$2") ncs_init; \ register ARG_TYPE __a0 __asm__("$4") = (ARG_TYPE) arg1; \ register ARG_TYPE __a1 __asm__("$5") = (ARG_TYPE) arg2; \ register ARG_TYPE __a2 __asm__("$6") = (ARG_TYPE) arg3; \ register ARG_TYPE __a3 __asm__("$7") = (ARG_TYPE) arg4; \ register ARG_TYPE __a4 __asm__("$8") = (ARG_TYPE) arg5; \ register ARG_TYPE __a5 __asm__("$9") = (ARG_TYPE) arg6; \ __asm__ __volatile__ ( \ ".set\tnoreorder\n\t" \ cs_init \ "syscall\n\t" \ ".set\treorder" \ : "=r" (__v0), "+r" (__a3) \ : input, "r" (__a0), "r" (__a1), "r" (__a2), "r" (__a4), \ "r" (__a5) \ : __SYSCALL_CLOBBERS); \ err = __a3; \ _sys_result = __v0; \ } \ _sys_result; \ }) #define __SYSCALL_CLOBBERS "$1", "$3", "$10", "$11", "$12", "$13", \ "$14", "$15", "$24", "$25", "hi", "lo", "memory" #endif #endif /* __ASSEMBLER__ */ #endif /* _BITS_SYSCALLS_H */ |