#include <asm/uaccess.h>
#include <asm/ptrace.h>
-#include <asm/svr4.h>
#include <asm/pgtable.h>
#include <asm/psrcompat.h>
#include <asm/fpumacro.h>
force_sigsegv(signo, current);
}
-/* Setup a Solaris stack frame */
-static void
-setup_svr4_frame32(struct sigaction *sa, unsigned long pc, unsigned long npc,
- struct pt_regs *regs, int signr, sigset_t *oldset)
-{
- svr4_signal_frame_t __user *sfp;
- svr4_gregset_t __user *gr;
- svr4_siginfo_t __user *si;
- svr4_mcontext_t __user *mc;
- svr4_gwindows_t __user *gw;
- svr4_ucontext_t __user *uc;
- svr4_sigset_t setv;
- unsigned int psr;
- int i, err;
-
- synchronize_user_stack();
- save_and_clear_fpu();
-
- regs->u_regs[UREG_FP] &= 0x00000000ffffffffUL;
- sfp = (svr4_signal_frame_t __user *)
- get_sigframe(sa, regs,
- sizeof(struct reg_window32) + SVR4_SF_ALIGNED);
-
- if (invalid_frame_pointer(sfp, sizeof(*sfp)))
- do_exit(SIGILL);
-
- /* Start with a clean frame pointer and fill it */
- err = clear_user(sfp, sizeof(*sfp));
-
- /* Setup convenience variables */
- si = &sfp->si;
- uc = &sfp->uc;
- gw = &sfp->gw;
- mc = &uc->mcontext;
- gr = &mc->greg;
-
- /* FIXME: where am I supposed to put this?
- * sc->sigc_onstack = old_status;
- * anyways, it does not look like it is used for anything at all.
- */
- setv.sigbits[0] = oldset->sig[0];
- setv.sigbits[1] = (oldset->sig[0] >> 32);
- if (_NSIG_WORDS >= 2) {
- setv.sigbits[2] = oldset->sig[1];
- setv.sigbits[3] = (oldset->sig[1] >> 32);
- err |= __copy_to_user(&uc->sigmask, &setv, sizeof(svr4_sigset_t));
- } else
- err |= __copy_to_user(&uc->sigmask, &setv,
- 2 * sizeof(unsigned int));
-
- /* Store registers */
- if (test_thread_flag(TIF_32BIT)) {
- regs->tpc &= 0xffffffff;
- regs->tnpc &= 0xffffffff;
- }
- err |= __put_user(regs->tpc, &((*gr)[SVR4_PC]));
- err |= __put_user(regs->tnpc, &((*gr)[SVR4_NPC]));
- psr = tstate_to_psr(regs->tstate);
- if (current_thread_info()->fpsaved[0] & FPRS_FEF)
- psr |= PSR_EF;
- err |= __put_user(psr, &((*gr)[SVR4_PSR]));
- err |= __put_user(regs->y, &((*gr)[SVR4_Y]));
-
- /* Copy g[1..7] and o[0..7] registers */
- for (i = 0; i < 7; i++)
- err |= __put_user(regs->u_regs[UREG_G1+i], (&(*gr)[SVR4_G1])+i);
- for (i = 0; i < 8; i++)
- err |= __put_user(regs->u_regs[UREG_I0+i], (&(*gr)[SVR4_O0])+i);
-
- /* Setup sigaltstack */
- err |= __put_user(current->sas_ss_sp, &uc->stack.sp);
- err |= __put_user(sas_ss_flags(regs->u_regs[UREG_FP]), &uc->stack.flags);
- err |= __put_user(current->sas_ss_size, &uc->stack.size);
-
- /* Save the currently window file: */
-
- /* 1. Link sfp->uc->gwins to our windows */
- err |= __put_user(ptr_to_compat(gw), &mc->gwin);
-
- /* 2. Number of windows to restore at setcontext (): */
- err |= __put_user(get_thread_wsaved(), &gw->count);
-
- /* 3. We just pay attention to the gw->count field on setcontext */
- set_thread_wsaved(0); /* So process is allowed to execute. */
-
- /* Setup the signal information. Solaris expects a bunch of
- * information to be passed to the signal handler, we don't provide
- * that much currently, should use siginfo.
- */
- err |= __put_user(signr, &si->siginfo.signo);
- err |= __put_user(SVR4_SINOINFO, &si->siginfo.code);
- if (err)
- goto sigsegv;
-
- regs->u_regs[UREG_FP] = (unsigned long) sfp;
- regs->tpc = (unsigned long) sa->sa_handler;
- regs->tnpc = (regs->tpc + 4);
- if (test_thread_flag(TIF_32BIT)) {
- regs->tpc &= 0xffffffff;
- regs->tnpc &= 0xffffffff;
- }
-
- /* Arguments passed to signal handler */
- if (regs->u_regs[14]){
- struct reg_window32 __user *rw = (struct reg_window32 __user *)
- (regs->u_regs[14] & 0x00000000ffffffffUL);
-
- err |= __put_user(signr, &rw->ins[0]);
- err |= __put_user((u64)si, &rw->ins[1]);
- err |= __put_user((u64)uc, &rw->ins[2]);
- err |= __put_user((u64)sfp, &rw->ins[6]); /* frame pointer */
- if (err)
- goto sigsegv;
-
- regs->u_regs[UREG_I0] = signr;
- regs->u_regs[UREG_I1] = (u32)(u64) si;
- regs->u_regs[UREG_I2] = (u32)(u64) uc;
- }
- return;
-
-sigsegv:
- force_sigsegv(signr, current);
-}
-
-asmlinkage int
-svr4_getcontext(svr4_ucontext_t __user *uc, struct pt_regs *regs)
-{
- svr4_gregset_t __user *gr;
- svr4_mcontext_t __user *mc;
- svr4_sigset_t setv;
- int i, err;
- u32 psr;
-
- synchronize_user_stack();
- save_and_clear_fpu();
-
- if (get_thread_wsaved())
- do_exit(SIGSEGV);
-
- err = clear_user(uc, sizeof(*uc));
-
- /* Setup convenience variables */
- mc = &uc->mcontext;
- gr = &mc->greg;
-
- setv.sigbits[0] = current->blocked.sig[0];
- setv.sigbits[1] = (current->blocked.sig[0] >> 32);
- if (_NSIG_WORDS >= 2) {
- setv.sigbits[2] = current->blocked.sig[1];
- setv.sigbits[3] = (current->blocked.sig[1] >> 32);
- err |= __copy_to_user(&uc->sigmask, &setv, sizeof(svr4_sigset_t));
- } else
- err |= __copy_to_user(&uc->sigmask, &setv, 2 * sizeof(unsigned));
-
- /* Store registers */
- if (test_thread_flag(TIF_32BIT)) {
- regs->tpc &= 0xffffffff;
- regs->tnpc &= 0xffffffff;
- }
- err |= __put_user(regs->tpc, &uc->mcontext.greg[SVR4_PC]);
- err |= __put_user(regs->tnpc, &uc->mcontext.greg[SVR4_NPC]);
-
- psr = tstate_to_psr(regs->tstate) & ~PSR_EF;
- if (current_thread_info()->fpsaved[0] & FPRS_FEF)
- psr |= PSR_EF;
- err |= __put_user(psr, &uc->mcontext.greg[SVR4_PSR]);
-
- err |= __put_user(regs->y, &uc->mcontext.greg[SVR4_Y]);
-
- /* Copy g[1..7] and o[0..7] registers */
- for (i = 0; i < 7; i++)
- err |= __put_user(regs->u_regs[UREG_G1+i], (&(*gr)[SVR4_G1])+i);
- for (i = 0; i < 8; i++)
- err |= __put_user(regs->u_regs[UREG_I0+i], (&(*gr)[SVR4_O0])+i);
-
- /* Setup sigaltstack */
- err |= __put_user(current->sas_ss_sp, &uc->stack.sp);
- err |= __put_user(sas_ss_flags(regs->u_regs[UREG_FP]), &uc->stack.flags);
- err |= __put_user(current->sas_ss_size, &uc->stack.size);
-
- /* The register file is not saved
- * we have already stuffed all of it with sync_user_stack
- */
- return (err ? -EFAULT : 0);
-}
-
-
-/* Set the context for a svr4 application, this is Solaris way to sigreturn */
-asmlinkage int svr4_setcontext(svr4_ucontext_t __user *c, struct pt_regs *regs)
-{
- svr4_gregset_t __user *gr;
- mm_segment_t old_fs;
- u32 pc, npc, psr, u_ss_sp;
- sigset_t set;
- svr4_sigset_t setv;
- int i, err;
- stack_t st;
-
- /* Fixme: restore windows, or is this already taken care of in
- * svr4_setup_frame when sync_user_windows is done?
- */
- flush_user_windows();
-
- if (get_thread_wsaved())
- goto sigsegv;
-
- if (((unsigned long) c) & 3){
- printk("Unaligned structure passed\n");
- goto sigsegv;
- }
-
- if (!__access_ok(c, sizeof(*c))) {
- /* Miguel, add nice debugging msg _here_. ;-) */
- goto sigsegv;
- }
-
- /* Check for valid PC and nPC */
- gr = &c->mcontext.greg;
- err = __get_user(pc, &((*gr)[SVR4_PC]));
- err |= __get_user(npc, &((*gr)[SVR4_NPC]));
- if ((pc | npc) & 3)
- goto sigsegv;
-
- /* Retrieve information from passed ucontext */
- /* note that nPC is ored a 1, this is used to inform entry.S */
- /* that we don't want it to mess with our PC and nPC */
-
- err |= copy_from_user(&setv, &c->sigmask, sizeof(svr4_sigset_t));
- set.sig[0] = setv.sigbits[0] | (((long)setv.sigbits[1]) << 32);
- if (_NSIG_WORDS >= 2)
- set.sig[1] = setv.sigbits[2] | (((long)setv.sigbits[3]) << 32);
-
- err |= __get_user(u_ss_sp, &c->stack.sp);
- st.ss_sp = compat_ptr(u_ss_sp);
- err |= __get_user(st.ss_flags, &c->stack.flags);
- err |= __get_user(st.ss_size, &c->stack.size);
- if (err)
- goto sigsegv;
-
- /* It is more difficult to avoid calling this function than to
- call it and ignore errors. */
- old_fs = get_fs();
- set_fs(KERNEL_DS);
- do_sigaltstack((stack_t __user *) &st, NULL, regs->u_regs[UREG_I6]);
- set_fs(old_fs);
-
- sigdelsetmask(&set, ~_BLOCKABLE);
- spin_lock_irq(¤t->sighand->siglock);
- current->blocked = set;
- recalc_sigpending();
- spin_unlock_irq(¤t->sighand->siglock);
- regs->tpc = pc;
- regs->tnpc = npc | 1;
- if (test_thread_flag(TIF_32BIT)) {
- regs->tpc &= 0xffffffff;
- regs->tnpc &= 0xffffffff;
- }
- err |= __get_user(regs->y, &((*gr)[SVR4_Y]));
- err |= __get_user(psr, &((*gr)[SVR4_PSR]));
- regs->tstate &= ~(TSTATE_ICC|TSTATE_XCC);
- regs->tstate |= psr_to_tstate_icc(psr);
-
- /* Restore g[1..7] and o[0..7] registers */
- for (i = 0; i < 7; i++)
- err |= __get_user(regs->u_regs[UREG_G1+i], (&(*gr)[SVR4_G1])+i);
- for (i = 0; i < 8; i++)
- err |= __get_user(regs->u_regs[UREG_I0+i], (&(*gr)[SVR4_O0])+i);
- if (err)
- goto sigsegv;
-
- return -EINTR;
-sigsegv:
- return -EFAULT;
-}
-
static void setup_rt_frame32(struct k_sigaction *ka, struct pt_regs *regs,
unsigned long signr, sigset_t *oldset,
siginfo_t *info)
static inline void handle_signal32(unsigned long signr, struct k_sigaction *ka,
siginfo_t *info,
- sigset_t *oldset, struct pt_regs *regs,
- int svr4_signal)
+ sigset_t *oldset, struct pt_regs *regs)
{
- if (svr4_signal)
- setup_svr4_frame32(&ka->sa, regs->tpc, regs->tnpc,
- regs, signr, oldset);
- else {
- if (ka->sa.sa_flags & SA_SIGINFO)
- setup_rt_frame32(ka, regs, signr, oldset, info);
- else if (test_thread_flag(TIF_NEWSIGNALS))
- new_setup_frame32(ka, regs, signr, oldset);
- else
- setup_frame32(&ka->sa, regs, signr, oldset, info);
- }
+ if (ka->sa.sa_flags & SA_SIGINFO)
+ setup_rt_frame32(ka, regs, signr, oldset, info);
+ else if (test_thread_flag(TIF_NEWSIGNALS))
+ new_setup_frame32(ka, regs, signr, oldset);
+ else
+ setup_frame32(&ka->sa, regs, signr, oldset, info);
spin_lock_irq(¤t->sighand->siglock);
sigorsets(¤t->blocked,¤t->blocked,&ka->sa.sa_mask);
if (!(ka->sa.sa_flags & SA_NOMASK))
* mistake.
*/
void do_signal32(sigset_t *oldset, struct pt_regs * regs,
- unsigned long orig_i0, int restart_syscall)
+ struct signal_deliver_cookie *cookie)
{
- siginfo_t info;
- struct signal_deliver_cookie cookie;
struct k_sigaction ka;
+ siginfo_t info;
int signr;
- int svr4_signal = current->personality == PER_SVR4;
- cookie.restart_syscall = restart_syscall;
- cookie.orig_i0 = orig_i0;
-
- signr = get_signal_to_deliver(&info, &ka, regs, &cookie);
+ signr = get_signal_to_deliver(&info, &ka, regs, cookie);
if (signr > 0) {
- if (cookie.restart_syscall)
- syscall_restart32(orig_i0, regs, &ka.sa);
- handle_signal32(signr, &ka, &info, oldset,
- regs, svr4_signal);
+ if (cookie->restart_syscall)
+ syscall_restart32(cookie->orig_i0, regs, &ka.sa);
+ handle_signal32(signr, &ka, &info, oldset, regs);
/* a signal was successfully delivered; the saved
* sigmask will have been stored in the signal frame,
clear_thread_flag(TIF_RESTORE_SIGMASK);
return;
}
- if (cookie.restart_syscall &&
+ if (cookie->restart_syscall &&
(regs->u_regs[UREG_I0] == ERESTARTNOHAND ||
regs->u_regs[UREG_I0] == ERESTARTSYS ||
regs->u_regs[UREG_I0] == ERESTARTNOINTR)) {
/* replay the system call when we are done */
- regs->u_regs[UREG_I0] = cookie.orig_i0;
+ regs->u_regs[UREG_I0] = cookie->orig_i0;
regs->tpc -= 4;
regs->tnpc -= 4;
}
- if (cookie.restart_syscall &&
+ if (cookie->restart_syscall &&
regs->u_regs[UREG_I0] == ERESTART_RESTARTBLOCK) {
regs->u_regs[UREG_G1] = __NR_restart_syscall;
regs->tpc -= 4;
projects / linux-2.6 / blobdiff