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 | |