#include <asm/pgtable.h>
#include <asm/cacheflush.h> /* flush_sig_insns */
+#include "sigutil.h"
+
#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
extern void fpsave(unsigned long *fpregs, unsigned long *fsr,
unsigned long insns[2] __attribute__ ((aligned (8)));
unsigned int extramask[_NSIG_WORDS - 1];
unsigned int extra_size; /* Should be 0 */
- __siginfo_fpu_t fpu_state;
-};
+ __siginfo_rwin_t __user *rwin_save;
+} __attribute__((aligned(8)));
struct rt_signal_frame {
struct sparc_stackf ss;
unsigned int insns[2];
stack_t stack;
unsigned int extra_size; /* Should be 0 */
- __siginfo_fpu_t fpu_state;
-};
+ __siginfo_rwin_t __user *rwin_save;
+} __attribute__((aligned(8)));
/* Align macros */
#define SF_ALIGNEDSZ (((sizeof(struct signal_frame) + 7) & (~7)))
static int _sigpause_common(old_sigset_t set)
{
- set &= _BLOCKABLE;
- spin_lock_irq(¤t->sighand->siglock);
+ sigset_t blocked;
+
current->saved_sigmask = current->blocked;
- siginitset(¤t->blocked, set);
- recalc_sigpending();
- spin_unlock_irq(¤t->sighand->siglock);
+
+ set &= _BLOCKABLE;
+ siginitset(&blocked, set);
+ set_current_blocked(&blocked);
current->state = TASK_INTERRUPTIBLE;
schedule();
return _sigpause_common(set);
}
-static inline int
-restore_fpu_state(struct pt_regs *regs, __siginfo_fpu_t __user *fpu)
-{
- int err;
-#ifdef CONFIG_SMP
- if (test_tsk_thread_flag(current, TIF_USEDFPU))
- regs->psr &= ~PSR_EF;
-#else
- if (current == last_task_used_math) {
- last_task_used_math = NULL;
- regs->psr &= ~PSR_EF;
- }
-#endif
- set_used_math();
- clear_tsk_thread_flag(current, TIF_USEDFPU);
-
- if (!access_ok(VERIFY_READ, fpu, sizeof(*fpu)))
- return -EFAULT;
-
- err = __copy_from_user(¤t->thread.float_regs[0], &fpu->si_float_regs[0],
- (sizeof(unsigned long) * 32));
- err |= __get_user(current->thread.fsr, &fpu->si_fsr);
- err |= __get_user(current->thread.fpqdepth, &fpu->si_fpqdepth);
- if (current->thread.fpqdepth != 0)
- err |= __copy_from_user(¤t->thread.fpqueue[0],
- &fpu->si_fpqueue[0],
- ((sizeof(unsigned long) +
- (sizeof(unsigned long *)))*16));
- return err;
-}
-
asmlinkage void do_sigreturn(struct pt_regs *regs)
{
struct signal_frame __user *sf;
unsigned long up_psr, pc, npc;
sigset_t set;
__siginfo_fpu_t __user *fpu_save;
+ __siginfo_rwin_t __user *rwin_save;
int err;
/* Always make any pending restarted system calls return -EINTR */
pt_regs_clear_syscall(regs);
err |= __get_user(fpu_save, &sf->fpu_save);
-
if (fpu_save)
err |= restore_fpu_state(regs, fpu_save);
+ err |= __get_user(rwin_save, &sf->rwin_save);
+ if (rwin_save)
+ err |= restore_rwin_state(rwin_save);
/* This is pretty much atomic, no amount locking would prevent
* the races which exist anyways.
goto segv_and_exit;
sigdelsetmask(&set, ~_BLOCKABLE);
- spin_lock_irq(¤t->sighand->siglock);
- current->blocked = set;
- recalc_sigpending();
- spin_unlock_irq(¤t->sighand->siglock);
+ set_current_blocked(&set);
return;
segv_and_exit:
struct rt_signal_frame __user *sf;
unsigned int psr, pc, npc;
__siginfo_fpu_t __user *fpu_save;
+ __siginfo_rwin_t __user *rwin_save;
mm_segment_t old_fs;
sigset_t set;
stack_t st;
pt_regs_clear_syscall(regs);
err |= __get_user(fpu_save, &sf->fpu_save);
-
- if (fpu_save)
+ if (!err && fpu_save)
err |= restore_fpu_state(regs, fpu_save);
err |= __copy_from_user(&set, &sf->mask, sizeof(sigset_t));
do_sigaltstack((const stack_t __user *) &st, NULL, (unsigned long)sf);
set_fs(old_fs);
+ err |= __get_user(rwin_save, &sf->rwin_save);
+ if (!err && rwin_save) {
+ if (restore_rwin_state(rwin_save))
+ goto segv;
+ }
+
sigdelsetmask(&set, ~_BLOCKABLE);
- spin_lock_irq(¤t->sighand->siglock);
- current->blocked = set;
- recalc_sigpending();
- spin_unlock_irq(¤t->sighand->siglock);
+ set_current_blocked(&set);
return;
segv:
force_sig(SIGSEGV, current);
return (void __user *) sp;
}
-static inline int
-save_fpu_state(struct pt_regs *regs, __siginfo_fpu_t __user *fpu)
-{
- int err = 0;
-#ifdef CONFIG_SMP
- if (test_tsk_thread_flag(current, TIF_USEDFPU)) {
- put_psr(get_psr() | PSR_EF);
- fpsave(¤t->thread.float_regs[0], ¤t->thread.fsr,
- ¤t->thread.fpqueue[0], ¤t->thread.fpqdepth);
- regs->psr &= ~(PSR_EF);
- clear_tsk_thread_flag(current, TIF_USEDFPU);
- }
-#else
- if (current == last_task_used_math) {
- put_psr(get_psr() | PSR_EF);
- fpsave(¤t->thread.float_regs[0], ¤t->thread.fsr,
- ¤t->thread.fpqueue[0], ¤t->thread.fpqdepth);
- last_task_used_math = NULL;
- regs->psr &= ~(PSR_EF);
- }
-#endif
- err |= __copy_to_user(&fpu->si_float_regs[0],
- ¤t->thread.float_regs[0],
- (sizeof(unsigned long) * 32));
- err |= __put_user(current->thread.fsr, &fpu->si_fsr);
- err |= __put_user(current->thread.fpqdepth, &fpu->si_fpqdepth);
- if (current->thread.fpqdepth != 0)
- err |= __copy_to_user(&fpu->si_fpqueue[0],
- ¤t->thread.fpqueue[0],
- ((sizeof(unsigned long) +
- (sizeof(unsigned long *)))*16));
- clear_used_math();
- return err;
-}
-
static int setup_frame(struct k_sigaction *ka, struct pt_regs *regs,
int signo, sigset_t *oldset)
{
struct signal_frame __user *sf;
- int sigframe_size, err;
+ int sigframe_size, err, wsaved;
+ void __user *tail;
/* 1. Make sure everything is clean */
synchronize_user_stack();
- sigframe_size = SF_ALIGNEDSZ;
- if (!used_math())
- sigframe_size -= sizeof(__siginfo_fpu_t);
+ wsaved = current_thread_info()->w_saved;
+
+ sigframe_size = sizeof(*sf);
+ if (used_math())
+ sigframe_size += sizeof(__siginfo_fpu_t);
+ if (wsaved)
+ sigframe_size += sizeof(__siginfo_rwin_t);
sf = (struct signal_frame __user *)
get_sigframe(&ka->sa, regs, sigframe_size);
if (invalid_frame_pointer(sf, sigframe_size))
goto sigill_and_return;
- if (current_thread_info()->w_saved != 0)
- goto sigill_and_return;
+ tail = sf + 1;
/* 2. Save the current process state */
err = __copy_to_user(&sf->info.si_regs, regs, sizeof(struct pt_regs));
err |= __put_user(0, &sf->extra_size);
if (used_math()) {
- err |= save_fpu_state(regs, &sf->fpu_state);
- err |= __put_user(&sf->fpu_state, &sf->fpu_save);
+ __siginfo_fpu_t __user *fp = tail;
+ tail += sizeof(*fp);
+ err |= save_fpu_state(regs, fp);
+ err |= __put_user(fp, &sf->fpu_save);
} else {
err |= __put_user(0, &sf->fpu_save);
}
+ if (wsaved) {
+ __siginfo_rwin_t __user *rwp = tail;
+ tail += sizeof(*rwp);
+ err |= save_rwin_state(wsaved, rwp);
+ err |= __put_user(rwp, &sf->rwin_save);
+ } else {
+ err |= __put_user(0, &sf->rwin_save);
+ }
err |= __put_user(oldset->sig[0], &sf->info.si_mask);
err |= __copy_to_user(sf->extramask, &oldset->sig[1],
(_NSIG_WORDS - 1) * sizeof(unsigned int));
- err |= __copy_to_user(sf, (char *) regs->u_regs[UREG_FP],
- sizeof(struct reg_window32));
+ if (!wsaved) {
+ err |= __copy_to_user(sf, (char *) regs->u_regs[UREG_FP],
+ sizeof(struct reg_window32));
+ } else {
+ struct reg_window32 *rp;
+
+ rp = ¤t_thread_info()->reg_window[wsaved - 1];
+ err |= __copy_to_user(sf, rp, sizeof(struct reg_window32));
+ }
if (err)
goto sigsegv;
int signo, sigset_t *oldset, siginfo_t *info)
{
struct rt_signal_frame __user *sf;
- int sigframe_size;
+ int sigframe_size, wsaved;
+ void __user *tail;
unsigned int psr;
int err;
synchronize_user_stack();
- sigframe_size = RT_ALIGNEDSZ;
- if (!used_math())
- sigframe_size -= sizeof(__siginfo_fpu_t);
+ wsaved = current_thread_info()->w_saved;
+ sigframe_size = sizeof(*sf);
+ if (used_math())
+ sigframe_size += sizeof(__siginfo_fpu_t);
+ if (wsaved)
+ sigframe_size += sizeof(__siginfo_rwin_t);
sf = (struct rt_signal_frame __user *)
get_sigframe(&ka->sa, regs, sigframe_size);
if (invalid_frame_pointer(sf, sigframe_size))
goto sigill;
- if (current_thread_info()->w_saved != 0)
- goto sigill;
+ tail = sf + 1;
err = __put_user(regs->pc, &sf->regs.pc);
err |= __put_user(regs->npc, &sf->regs.npc);
err |= __put_user(regs->y, &sf->regs.y);
err |= __put_user(0, &sf->extra_size);
if (psr & PSR_EF) {
- err |= save_fpu_state(regs, &sf->fpu_state);
- err |= __put_user(&sf->fpu_state, &sf->fpu_save);
+ __siginfo_fpu_t *fp = tail;
+ tail += sizeof(*fp);
+ err |= save_fpu_state(regs, fp);
+ err |= __put_user(fp, &sf->fpu_save);
} else {
err |= __put_user(0, &sf->fpu_save);
}
+ if (wsaved) {
+ __siginfo_rwin_t *rwp = tail;
+ tail += sizeof(*rwp);
+ err |= save_rwin_state(wsaved, rwp);
+ err |= __put_user(rwp, &sf->rwin_save);
+ } else {
+ err |= __put_user(0, &sf->rwin_save);
+ }
err |= __copy_to_user(&sf->mask, &oldset->sig[0], sizeof(sigset_t));
/* Setup sigaltstack */
err |= __put_user(sas_ss_flags(regs->u_regs[UREG_FP]), &sf->stack.ss_flags);
err |= __put_user(current->sas_ss_size, &sf->stack.ss_size);
- err |= __copy_to_user(sf, (char *) regs->u_regs[UREG_FP],
- sizeof(struct reg_window32));
+ if (!wsaved) {
+ err |= __copy_to_user(sf, (char *) regs->u_regs[UREG_FP],
+ sizeof(struct reg_window32));
+ } else {
+ struct reg_window32 *rp;
+
+ rp = ¤t_thread_info()->reg_window[wsaved - 1];
+ err |= __copy_to_user(sf, rp, sizeof(struct reg_window32));
+ }
err |= copy_siginfo_to_user(&sf->info, info);
handle_signal(unsigned long signr, struct k_sigaction *ka,
siginfo_t *info, sigset_t *oldset, struct pt_regs *regs)
{
+ sigset_t blocked;
int err;
if (ka->sa.sa_flags & SA_SIGINFO)
if (err)
return err;
- spin_lock_irq(¤t->sighand->siglock);
- sigorsets(¤t->blocked,¤t->blocked,&ka->sa.sa_mask);
+ sigorsets(&blocked, ¤t->blocked, &ka->sa.sa_mask);
if (!(ka->sa.sa_flags & SA_NOMASK))
- sigaddset(¤t->blocked, signr);
- recalc_sigpending();
- spin_unlock_irq(¤t->sighand->siglock);
+ sigaddset(&blocked, signr);
+ set_current_blocked(&blocked);
tracehook_signal_handler(signr, info, ka, regs, 0);
*/
if (test_thread_flag(TIF_RESTORE_SIGMASK)) {
clear_thread_flag(TIF_RESTORE_SIGMASK);
- sigprocmask(SIG_SETMASK, ¤t->saved_sigmask, NULL);
+ set_current_blocked(¤t->saved_sigmask);
}
}
git.openpandora.org / pandora-kernel.git / blobdiff