| 1 | /* $NetBSD: linux32_machdep.c,v 1.37 2016/09/02 07:51:05 maxv Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 2006 Emmanuel Dreyfus, all rights reserved. |
| 5 | * |
| 6 | * Redistribution and use in source and binary forms, with or without |
| 7 | * modification, are permitted provided that the following conditions |
| 8 | * are met: |
| 9 | * 1. Redistributions of source code must retain the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer. |
| 11 | * 2. Redistributions in binary form must reproduce the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer in the |
| 13 | * documentation and/or other materials provided with the distribution. |
| 14 | * 3. All advertising materials mentioning features or use of this software |
| 15 | * must display the following acknowledgement: |
| 16 | * This product includes software developed by Emmanuel Dreyfus |
| 17 | * 4. The name of the author may not be used to endorse or promote |
| 18 | * products derived from this software without specific prior written |
| 19 | * permission. |
| 20 | * |
| 21 | * THIS SOFTWARE IS PROVIDED BY THE THE AUTHOR AND CONTRIBUTORS ``AS IS'' |
| 22 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| 23 | * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 24 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS |
| 25 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 26 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 27 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 28 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 29 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 30 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 31 | * POSSIBILITY OF SUCH DAMAGE. |
| 32 | */ |
| 33 | #include <sys/cdefs.h> |
| 34 | __KERNEL_RCSID(0, "$NetBSD: linux32_machdep.c,v 1.37 2016/09/02 07:51:05 maxv Exp $" ); |
| 35 | |
| 36 | #include <sys/param.h> |
| 37 | #include <sys/proc.h> |
| 38 | #include <sys/exec.h> |
| 39 | |
| 40 | #include <machine/vmparam.h> |
| 41 | #include <machine/cpufunc.h> |
| 42 | #include <machine/netbsd32_machdep.h> |
| 43 | |
| 44 | #include <x86/fpu.h> |
| 45 | |
| 46 | #include <compat/netbsd32/netbsd32.h> |
| 47 | #include <compat/netbsd32/netbsd32_syscallargs.h> |
| 48 | |
| 49 | #include <compat/linux/common/linux_types.h> |
| 50 | #include <compat/linux/common/linux_emuldata.h> |
| 51 | #include <compat/linux/common/linux_signal.h> |
| 52 | #include <compat/linux/common/linux_errno.h> |
| 53 | #include <compat/linux/common/linux_exec.h> |
| 54 | #include <compat/linux/common/linux_ipc.h> |
| 55 | #include <compat/linux/common/linux_sem.h> |
| 56 | #include <compat/linux/linux_syscallargs.h> |
| 57 | |
| 58 | #include <compat/linux32/common/linux32_types.h> |
| 59 | #include <compat/linux32/common/linux32_errno.h> |
| 60 | #include <compat/linux32/common/linux32_machdep.h> |
| 61 | #include <compat/linux32/common/linux32_signal.h> |
| 62 | #include <compat/linux32/common/linux32_exec.h> |
| 63 | #include <compat/linux32/common/linux32_ipc.h> |
| 64 | #include <compat/linux32/common/linux32_sem.h> |
| 65 | #include <compat/linux32/linux32_syscallargs.h> |
| 66 | |
| 67 | #ifdef DEBUG_LINUX |
| 68 | #define DPRINTF(a) uprintf a |
| 69 | #else |
| 70 | #define DPRINTF(a) |
| 71 | #endif |
| 72 | |
| 73 | extern char linux32_sigcode[]; |
| 74 | extern char linux32_rt_sigcode[]; |
| 75 | extern char linux32_esigcode[]; |
| 76 | |
| 77 | static void linux32_save_ucontext(struct lwp *, struct trapframe *, |
| 78 | const sigset_t *, struct sigaltstack *, struct linux32_ucontext *); |
| 79 | static void linux32_save_sigcontext(struct lwp *, struct trapframe *, |
| 80 | const sigset_t *, struct linux32_sigcontext *); |
| 81 | static void linux32_rt_sendsig(const ksiginfo_t *, const sigset_t *); |
| 82 | static void linux32_old_sendsig(const ksiginfo_t *, const sigset_t *); |
| 83 | static int linux32_restore_sigcontext(struct lwp *, |
| 84 | struct linux32_sigcontext *, register_t *); |
| 85 | |
| 86 | void |
| 87 | linux32_sendsig(const ksiginfo_t *ksi, const sigset_t *mask) |
| 88 | { |
| 89 | if (SIGACTION(curproc, ksi->ksi_signo).sa_flags & SA_SIGINFO) |
| 90 | linux32_rt_sendsig(ksi, mask); |
| 91 | else |
| 92 | linux32_old_sendsig(ksi, mask); |
| 93 | return; |
| 94 | } |
| 95 | |
| 96 | void |
| 97 | linux32_old_sendsig(const ksiginfo_t *ksi, const sigset_t *mask) |
| 98 | { |
| 99 | struct lwp *l = curlwp; |
| 100 | struct proc *p = l->l_proc; |
| 101 | struct trapframe *tf; |
| 102 | struct linux32_sigframe *fp, frame; |
| 103 | int onstack, error; |
| 104 | int sig = ksi->ksi_signo; |
| 105 | sig_t catcher = SIGACTION(p, sig).sa_handler; |
| 106 | struct sigaltstack *sas = &l->l_sigstk; |
| 107 | |
| 108 | tf = l->l_md.md_regs; |
| 109 | /* Do we need to jump onto the signal stack? */ |
| 110 | onstack = (sas->ss_flags & (SS_DISABLE | SS_ONSTACK)) == 0 && |
| 111 | (SIGACTION(p, sig).sa_flags & SA_ONSTACK) != 0; |
| 112 | |
| 113 | |
| 114 | /* Allocate space for the signal handler context. */ |
| 115 | if (onstack) |
| 116 | fp = (struct linux32_sigframe *)((char *)sas->ss_sp + |
| 117 | sas->ss_size); |
| 118 | else |
| 119 | fp = (struct linux32_sigframe *)tf->tf_rsp; |
| 120 | fp--; |
| 121 | |
| 122 | DPRINTF(("old: onstack = %d, fp = %p sig = %d rip = 0x%lx\n" , |
| 123 | onstack, fp, sig, tf->tf_rip)); |
| 124 | |
| 125 | /* Build stack frame for signal trampoline. */ |
| 126 | NETBSD32PTR32(frame.sf_handler, catcher); |
| 127 | frame.sf_sig = native_to_linux32_signo[sig]; |
| 128 | |
| 129 | linux32_save_sigcontext(l, tf, mask, &frame.sf_sc); |
| 130 | |
| 131 | sendsig_reset(l, sig); |
| 132 | mutex_exit(p->p_lock); |
| 133 | error = copyout(&frame, fp, sizeof(frame)); |
| 134 | mutex_enter(p->p_lock); |
| 135 | |
| 136 | if (error != 0) { |
| 137 | /* |
| 138 | * Process has trashed its stack; give it an illegal |
| 139 | * instruction to halt it in its tracks. |
| 140 | */ |
| 141 | sigexit(l, SIGILL); |
| 142 | /* NOTREACHED */ |
| 143 | } |
| 144 | |
| 145 | /* |
| 146 | * Build context to run handler in. |
| 147 | */ |
| 148 | tf->tf_fs = GSEL(GUDATA32_SEL, SEL_UPL) & 0xffffffff; |
| 149 | tf->tf_es = GSEL(GUDATA32_SEL, SEL_UPL) & 0xffffffff; |
| 150 | tf->tf_ds = GSEL(GUDATA32_SEL, SEL_UPL) & 0xffffffff; |
| 151 | tf->tf_rip = ((long)p->p_sigctx.ps_sigcode) & 0xffffffff; |
| 152 | tf->tf_cs = GSEL(GUCODE32_SEL, SEL_UPL) & 0xffffffff; |
| 153 | tf->tf_rflags &= ~PSL_CLEARSIG & 0xffffffff; |
| 154 | tf->tf_rsp = (long)fp & 0xffffffff; |
| 155 | tf->tf_ss = GSEL(GUDATA32_SEL, SEL_UPL) & 0xffffffff; |
| 156 | |
| 157 | /* Remember that we're now on the signal stack. */ |
| 158 | if (onstack) |
| 159 | sas->ss_flags |= SS_ONSTACK; |
| 160 | |
| 161 | return; |
| 162 | } |
| 163 | |
| 164 | void |
| 165 | linux32_rt_sendsig(const ksiginfo_t *ksi, const sigset_t *mask) |
| 166 | { |
| 167 | struct lwp *l = curlwp; |
| 168 | struct proc *p = l->l_proc; |
| 169 | struct trapframe *tf; |
| 170 | struct linux32_rt_sigframe *fp, frame; |
| 171 | int onstack, error; |
| 172 | linux32_siginfo_t *lsi; |
| 173 | int sig = ksi->ksi_signo; |
| 174 | sig_t catcher = SIGACTION(p, sig).sa_handler; |
| 175 | struct sigaltstack *sas = &l->l_sigstk; |
| 176 | |
| 177 | tf = l->l_md.md_regs; |
| 178 | /* Do we need to jump onto the signal stack? */ |
| 179 | onstack = (sas->ss_flags & (SS_DISABLE | SS_ONSTACK)) == 0 && |
| 180 | (SIGACTION(p, sig).sa_flags & SA_ONSTACK) != 0; |
| 181 | |
| 182 | |
| 183 | /* Allocate space for the signal handler context. */ |
| 184 | if (onstack) |
| 185 | fp = (struct linux32_rt_sigframe *)((char *)sas->ss_sp + |
| 186 | sas->ss_size); |
| 187 | else |
| 188 | fp = (struct linux32_rt_sigframe *)tf->tf_rsp; |
| 189 | fp--; |
| 190 | |
| 191 | /* Build stack frame for signal trampoline. */ |
| 192 | NETBSD32PTR32(frame.sf_handler, catcher); |
| 193 | frame.sf_sig = native_to_linux32_signo[sig]; |
| 194 | NETBSD32PTR32(frame.sf_sip, &fp->sf_si); |
| 195 | NETBSD32PTR32(frame.sf_ucp, &fp->sf_uc); |
| 196 | |
| 197 | DPRINTF(("rt: onstack = %d, fp = %p sig = %d rip = 0x%lx\n" , |
| 198 | onstack, fp, sig, tf->tf_rip)); |
| 199 | |
| 200 | lsi = &frame.sf_si; |
| 201 | (void)memset(lsi, 0, sizeof(frame.sf_si)); |
| 202 | lsi->lsi_errno = native_to_linux32_errno[ksi->ksi_errno]; |
| 203 | lsi->lsi_code = native_to_linux_si_code(ksi->ksi_code); |
| 204 | lsi->lsi_signo = frame.sf_sig; |
| 205 | switch (lsi->lsi_signo) { |
| 206 | case LINUX32_SIGILL: |
| 207 | case LINUX32_SIGFPE: |
| 208 | case LINUX32_SIGSEGV: |
| 209 | case LINUX32_SIGBUS: |
| 210 | case LINUX32_SIGTRAP: |
| 211 | NETBSD32PTR32(lsi->lsi_addr, ksi->ksi_addr); |
| 212 | break; |
| 213 | case LINUX32_SIGCHLD: |
| 214 | lsi->lsi_uid = ksi->ksi_uid; |
| 215 | lsi->lsi_pid = ksi->ksi_pid; |
| 216 | lsi->lsi_utime = ksi->ksi_utime; |
| 217 | lsi->lsi_stime = ksi->ksi_stime; |
| 218 | lsi->lsi_status = native_to_linux_si_status(ksi->ksi_code, |
| 219 | ksi->ksi_status); |
| 220 | break; |
| 221 | case LINUX32_SIGIO: |
| 222 | lsi->lsi_band = ksi->ksi_band; |
| 223 | lsi->lsi_fd = ksi->ksi_fd; |
| 224 | break; |
| 225 | default: |
| 226 | lsi->lsi_uid = ksi->ksi_uid; |
| 227 | lsi->lsi_pid = ksi->ksi_pid; |
| 228 | if (lsi->lsi_signo == LINUX32_SIGALRM || |
| 229 | lsi->lsi_signo >= LINUX32_SIGRTMIN) |
| 230 | NETBSD32PTR32(lsi->lsi_value.sival_ptr, |
| 231 | ksi->ksi_value.sival_ptr); |
| 232 | break; |
| 233 | } |
| 234 | |
| 235 | /* Save register context. */ |
| 236 | linux32_save_ucontext(l, tf, mask, sas, &frame.sf_uc); |
| 237 | sendsig_reset(l, sig); |
| 238 | mutex_exit(p->p_lock); |
| 239 | error = copyout(&frame, fp, sizeof(frame)); |
| 240 | mutex_enter(p->p_lock); |
| 241 | |
| 242 | if (error != 0) { |
| 243 | /* |
| 244 | * Process has trashed its stack; give it an illegal |
| 245 | * instruction to halt it in its tracks. |
| 246 | */ |
| 247 | sigexit(l, SIGILL); |
| 248 | /* NOTREACHED */ |
| 249 | } |
| 250 | |
| 251 | /* |
| 252 | * Build context to run handler in. |
| 253 | */ |
| 254 | tf->tf_fs = GSEL(GUDATA32_SEL, SEL_UPL) & 0xffffffff; |
| 255 | tf->tf_es = GSEL(GUDATA32_SEL, SEL_UPL) & 0xffffffff; |
| 256 | tf->tf_ds = GSEL(GUDATA32_SEL, SEL_UPL) & 0xffffffff; |
| 257 | tf->tf_rip = (((long)p->p_sigctx.ps_sigcode) + |
| 258 | (linux32_rt_sigcode - linux32_sigcode)) & 0xffffffff; |
| 259 | tf->tf_cs = GSEL(GUCODE32_SEL, SEL_UPL) & 0xffffffff; |
| 260 | tf->tf_rflags &= ~PSL_CLEARSIG & 0xffffffff; |
| 261 | tf->tf_rsp = (long)fp & 0xffffffff; |
| 262 | tf->tf_ss = GSEL(GUDATA32_SEL, SEL_UPL) & 0xffffffff; |
| 263 | |
| 264 | /* Remember that we're now on the signal stack. */ |
| 265 | if (onstack) |
| 266 | sas->ss_flags |= SS_ONSTACK; |
| 267 | |
| 268 | return; |
| 269 | } |
| 270 | |
| 271 | void |
| 272 | linux32_setregs(struct lwp *l, struct exec_package *pack, u_long stack) |
| 273 | { |
| 274 | struct pcb *pcb = lwp_getpcb(l); |
| 275 | struct trapframe *tf; |
| 276 | struct proc *p = l->l_proc; |
| 277 | |
| 278 | #if defined(USER_LDT) && 0 |
| 279 | pmap_ldt_cleanup(l); |
| 280 | #endif |
| 281 | |
| 282 | netbsd32_adjust_limits(p); |
| 283 | |
| 284 | fpu_save_area_clear(l, __Linux_NPXCW__); |
| 285 | |
| 286 | l->l_md.md_flags |= MDL_COMPAT32; /* Forces iret not sysret */ |
| 287 | pcb->pcb_flags = PCB_COMPAT32; |
| 288 | |
| 289 | p->p_flag |= PK_32; |
| 290 | |
| 291 | tf = l->l_md.md_regs; |
| 292 | tf->tf_rax = 0; |
| 293 | tf->tf_rbx = (u_int32_t)p->p_psstrp; |
| 294 | tf->tf_rcx = pack->ep_entry & 0xffffffff; |
| 295 | tf->tf_rdx = 0; |
| 296 | tf->tf_rsi = 0; |
| 297 | tf->tf_rdi = 0; |
| 298 | tf->tf_rbp = 0; |
| 299 | tf->tf_rsp = stack & 0xffffffff; |
| 300 | tf->tf_r8 = 0; |
| 301 | tf->tf_r9 = 0; |
| 302 | tf->tf_r10 = 0; |
| 303 | tf->tf_r11 = 0; |
| 304 | tf->tf_r12 = 0; |
| 305 | tf->tf_r13 = 0; |
| 306 | tf->tf_r14 = 0; |
| 307 | tf->tf_r15 = 0; |
| 308 | tf->tf_rip = pack->ep_entry & 0xffffffff; |
| 309 | tf->tf_rflags = PSL_USERSET; |
| 310 | tf->tf_cs = GSEL(GUCODE32_SEL, SEL_UPL); |
| 311 | tf->tf_ss = GSEL(GUDATA32_SEL, SEL_UPL); |
| 312 | tf->tf_ds = GSEL(GUDATA32_SEL, SEL_UPL); |
| 313 | tf->tf_es = GSEL(GUDATA32_SEL, SEL_UPL); |
| 314 | cpu_fsgs_zero(l); |
| 315 | cpu_fsgs_reload(l, GSEL(GUDATA32_SEL, SEL_UPL), GSEL(GUDATA32_SEL, SEL_UPL)); |
| 316 | } |
| 317 | |
| 318 | static void |
| 319 | linux32_save_ucontext(struct lwp *l, struct trapframe *tf, |
| 320 | const sigset_t *mask, struct sigaltstack *sas, struct linux32_ucontext *uc) |
| 321 | { |
| 322 | |
| 323 | uc->uc_flags = 0; |
| 324 | NETBSD32PTR32(uc->uc_link, NULL); |
| 325 | native_to_linux32_sigaltstack(&uc->uc_stack, sas); |
| 326 | linux32_save_sigcontext(l, tf, mask, &uc->uc_mcontext); |
| 327 | native_to_linux32_sigset(&uc->uc_sigmask, mask); |
| 328 | (void)memset(&uc->uc_fpregs_mem, 0, sizeof(uc->uc_fpregs_mem)); |
| 329 | } |
| 330 | |
| 331 | static void |
| 332 | linux32_save_sigcontext(struct lwp *l, struct trapframe *tf, |
| 333 | const sigset_t *mask, struct linux32_sigcontext *sc) |
| 334 | { |
| 335 | struct pcb *pcb = lwp_getpcb(l); |
| 336 | |
| 337 | /* Save register context. */ |
| 338 | sc->sc_gs = tf->tf_gs; |
| 339 | sc->sc_fs = tf->tf_fs; |
| 340 | sc->sc_es = tf->tf_es; |
| 341 | sc->sc_ds = tf->tf_ds; |
| 342 | sc->sc_eflags = tf->tf_rflags; |
| 343 | sc->sc_edi = tf->tf_rdi; |
| 344 | sc->sc_esi = tf->tf_rsi; |
| 345 | sc->sc_esp = tf->tf_rsp; |
| 346 | sc->sc_ebp = tf->tf_rbp; |
| 347 | sc->sc_ebx = tf->tf_rbx; |
| 348 | sc->sc_edx = tf->tf_rdx; |
| 349 | sc->sc_ecx = tf->tf_rcx; |
| 350 | sc->sc_eax = tf->tf_rax; |
| 351 | sc->sc_eip = tf->tf_rip; |
| 352 | sc->sc_cs = tf->tf_cs; |
| 353 | sc->sc_esp_at_signal = tf->tf_rsp; |
| 354 | sc->sc_ss = tf->tf_ss; |
| 355 | sc->sc_err = tf->tf_err; |
| 356 | sc->sc_trapno = tf->tf_trapno; |
| 357 | sc->sc_cr2 = pcb->pcb_cr2; |
| 358 | NETBSD32PTR32(sc->sc_387, NULL); |
| 359 | |
| 360 | /* Save signal stack. */ |
| 361 | /* Linux doesn't save the onstack flag in sigframe */ |
| 362 | |
| 363 | /* Save signal mask. */ |
| 364 | native_to_linux32_old_sigset(&sc->sc_mask, mask); |
| 365 | } |
| 366 | |
| 367 | int |
| 368 | linux32_sys_sigreturn(struct lwp *l, |
| 369 | const struct linux32_sys_sigreturn_args *uap, register_t *retval) |
| 370 | { |
| 371 | /* { |
| 372 | syscallarg(linux32_sigcontextp_t) scp; |
| 373 | } */ |
| 374 | struct linux32_sigcontext ctx; |
| 375 | int error; |
| 376 | |
| 377 | if ((error = copyin(SCARG_P32(uap, scp), &ctx, sizeof(ctx))) != 0) |
| 378 | return error; |
| 379 | |
| 380 | return linux32_restore_sigcontext(l, &ctx, retval); |
| 381 | } |
| 382 | |
| 383 | int |
| 384 | linux32_sys_rt_sigreturn(struct lwp *l, |
| 385 | const struct linux32_sys_rt_sigreturn_args *uap, register_t *retval) |
| 386 | { |
| 387 | /* { |
| 388 | syscallarg(linux32_ucontextp_t) ucp; |
| 389 | } */ |
| 390 | struct linux32_ucontext ctx; |
| 391 | int error; |
| 392 | |
| 393 | if ((error = copyin(SCARG_P32(uap, ucp), &ctx, sizeof(ctx))) != 0) |
| 394 | return error; |
| 395 | |
| 396 | return linux32_restore_sigcontext(l, &ctx.uc_mcontext, retval); |
| 397 | } |
| 398 | |
| 399 | static int |
| 400 | linux32_restore_sigcontext(struct lwp *l, struct linux32_sigcontext *scp, |
| 401 | register_t *retval) |
| 402 | { |
| 403 | struct trapframe *tf; |
| 404 | struct proc *p = l->l_proc; |
| 405 | struct sigaltstack *sas = &l->l_sigstk; |
| 406 | struct pcb *pcb; |
| 407 | sigset_t mask; |
| 408 | ssize_t ss_gap; |
| 409 | register_t fssel, gssel; |
| 410 | |
| 411 | /* Restore register context. */ |
| 412 | tf = l->l_md.md_regs; |
| 413 | pcb = lwp_getpcb(l); |
| 414 | DPRINTF(("sigreturn enter rsp=0x%lx rip=0x%lx\n" , tf->tf_rsp, |
| 415 | tf->tf_rip)); |
| 416 | |
| 417 | /* |
| 418 | * Check for security violations. |
| 419 | */ |
| 420 | if (((scp->sc_eflags ^ tf->tf_rflags) & PSL_USERSTATIC) != 0 || |
| 421 | !USERMODE(scp->sc_cs, scp->sc_eflags)) |
| 422 | return EINVAL; |
| 423 | |
| 424 | if (scp->sc_fs != 0 && !VALID_USER_DSEL32(scp->sc_fs) && |
| 425 | !(VALID_USER_FSEL32(scp->sc_fs) && pcb->pcb_fs != 0)) |
| 426 | return EINVAL; |
| 427 | |
| 428 | if (scp->sc_gs != 0 && !VALID_USER_DSEL32(scp->sc_gs) && |
| 429 | !(VALID_USER_GSEL32(scp->sc_gs) && pcb->pcb_gs != 0)) |
| 430 | return EINVAL; |
| 431 | |
| 432 | if (scp->sc_es != 0 && !VALID_USER_DSEL32(scp->sc_es)) |
| 433 | return EINVAL; |
| 434 | |
| 435 | if (!VALID_USER_DSEL32(scp->sc_ds) || |
| 436 | !VALID_USER_DSEL32(scp->sc_ss)) |
| 437 | return EINVAL; |
| 438 | |
| 439 | if (scp->sc_eip >= VM_MAXUSER_ADDRESS32) |
| 440 | return EINVAL; |
| 441 | |
| 442 | gssel = (register_t)scp->sc_gs & 0xffff; |
| 443 | fssel = (register_t)scp->sc_fs & 0xffff; |
| 444 | cpu_fsgs_reload(l, fssel, gssel); |
| 445 | tf->tf_es = (register_t)scp->sc_es & 0xffff; |
| 446 | tf->tf_ds = (register_t)scp->sc_ds & 0xffff; |
| 447 | tf->tf_rflags &= ~PSL_USER; |
| 448 | tf->tf_rflags |= ((register_t)scp->sc_eflags & PSL_USER); |
| 449 | tf->tf_rdi = (register_t)scp->sc_edi & 0xffffffff; |
| 450 | tf->tf_rsi = (register_t)scp->sc_esi & 0xffffffff; |
| 451 | tf->tf_rbp = (register_t)scp->sc_ebp & 0xffffffff; |
| 452 | tf->tf_rbx = (register_t)scp->sc_ebx & 0xffffffff; |
| 453 | tf->tf_rdx = (register_t)scp->sc_edx & 0xffffffff; |
| 454 | tf->tf_rcx = (register_t)scp->sc_ecx & 0xffffffff; |
| 455 | tf->tf_rax = (register_t)scp->sc_eax & 0xffffffff; |
| 456 | tf->tf_rip = (register_t)scp->sc_eip & 0xffffffff; |
| 457 | tf->tf_cs = (register_t)scp->sc_cs & 0xffff; |
| 458 | tf->tf_rsp = (register_t)scp->sc_esp_at_signal & 0xffffffff; |
| 459 | tf->tf_ss = (register_t)scp->sc_ss & 0xffff; |
| 460 | |
| 461 | mutex_enter(p->p_lock); |
| 462 | |
| 463 | /* Restore signal stack. */ |
| 464 | ss_gap = (ssize_t) |
| 465 | ((char *)NETBSD32IPTR64(scp->sc_esp_at_signal) |
| 466 | - (char *)sas->ss_sp); |
| 467 | if (ss_gap >= 0 && ss_gap < sas->ss_size) |
| 468 | sas->ss_flags |= SS_ONSTACK; |
| 469 | else |
| 470 | sas->ss_flags &= ~SS_ONSTACK; |
| 471 | |
| 472 | /* Restore signal mask. */ |
| 473 | linux32_old_to_native_sigset(&mask, &scp->sc_mask); |
| 474 | (void) sigprocmask1(l, SIG_SETMASK, &mask, 0); |
| 475 | |
| 476 | mutex_exit(p->p_lock); |
| 477 | |
| 478 | DPRINTF(("linux32_sigreturn: rip = 0x%lx, rsp = 0x%lx, flags = 0x%lx\n" , |
| 479 | tf->tf_rip, tf->tf_rsp, tf->tf_rflags)); |
| 480 | return EJUSTRETURN; |
| 481 | } |
| 482 | |
| 483 | int |
| 484 | linux32_sys_set_thread_area(struct lwp *l, |
| 485 | const struct linux32_sys_set_thread_area_args *uap, register_t *retval) |
| 486 | { |
| 487 | /* { |
| 488 | syscallarg(linux32_user_descp_t) desc; |
| 489 | } */ |
| 490 | |
| 491 | return linux_lwp_setprivate(l, SCARG_P32(uap, desc)); |
| 492 | } |
| 493 | |
| 494 | int |
| 495 | linux32_sys_get_thread_area(struct lwp *l, |
| 496 | const struct linux32_sys_get_thread_area_args *uap, register_t *retval) |
| 497 | { |
| 498 | /* { |
| 499 | syscallarg(linux32_user_descp_t) desc; |
| 500 | } */ |
| 501 | |
| 502 | /* glibc doesn't actually call this. */ |
| 503 | return ENOSYS; |
| 504 | } |
| 505 | |
| 506 | int |
| 507 | linux32_sys_modify_ldt(struct lwp *l, const struct linux32_sys_modify_ldt_args *uap, register_t *retval) |
| 508 | { |
| 509 | /* { |
| 510 | syscallarg(int) func; |
| 511 | syscallarg(netbsd32_charp) ptr; |
| 512 | syscallarg(netbsd32_size_t) bytecount; |
| 513 | } */ |
| 514 | struct linux_sys_modify_ldt_args ua; |
| 515 | |
| 516 | NETBSD32TO64_UAP(func); |
| 517 | NETBSD32TOP_UAP(ptr, void *); |
| 518 | NETBSD32TOX_UAP(bytecount, size_t); |
| 519 | return linux_sys_modify_ldt(l, &ua, retval); |
| 520 | } |
| 521 | |