Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/arch/sparc64/kernel/signal32.c b/arch/sparc64/kernel/signal32.c
new file mode 100644
index 0000000..859255c
--- /dev/null
+++ b/arch/sparc64/kernel/signal32.c
@@ -0,0 +1,1469 @@
+/* $Id: signal32.c,v 1.74 2002/02/09 19:49:30 davem Exp $
+ * arch/sparc64/kernel/signal32.c
+ *
+ * Copyright (C) 1991, 1992 Linus Torvalds
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 1996 Miguel de Icaza (miguel@nuclecu.unam.mx)
+ * Copyright (C) 1997 Eddie C. Dost (ecd@skynet.be)
+ * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ */
+
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/signal.h>
+#include <linux/errno.h>
+#include <linux/wait.h>
+#include <linux/ptrace.h>
+#include <linux/unistd.h>
+#include <linux/mm.h>
+#include <linux/tty.h>
+#include <linux/smp_lock.h>
+#include <linux/binfmts.h>
+#include <linux/compat.h>
+#include <linux/bitops.h>
+
+#include <asm/uaccess.h>
+#include <asm/ptrace.h>
+#include <asm/svr4.h>
+#include <asm/pgtable.h>
+#include <asm/psrcompat.h>
+#include <asm/fpumacro.h>
+#include <asm/visasm.h>
+
+#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
+
+int do_signal32(sigset_t *oldset, struct pt_regs *regs,
+ unsigned long orig_o0, int ret_from_syscall);
+
+/* Signal frames: the original one (compatible with SunOS):
+ *
+ * Set up a signal frame... Make the stack look the way SunOS
+ * expects it to look which is basically:
+ *
+ * ---------------------------------- <-- %sp at signal time
+ * Struct sigcontext
+ * Signal address
+ * Ptr to sigcontext area above
+ * Signal code
+ * The signal number itself
+ * One register window
+ * ---------------------------------- <-- New %sp
+ */
+struct signal_sframe32 {
+ struct reg_window32 sig_window;
+ int sig_num;
+ int sig_code;
+ /* struct sigcontext32 * */ u32 sig_scptr;
+ int sig_address;
+ struct sigcontext32 sig_context;
+ unsigned int extramask[_COMPAT_NSIG_WORDS - 1];
+};
+
+/* This magic should be in g_upper[0] for all upper parts
+ * to be valid.
+ */
+#define SIGINFO_EXTRA_V8PLUS_MAGIC 0x130e269
+typedef struct {
+ unsigned int g_upper[8];
+ unsigned int o_upper[8];
+ unsigned int asi;
+} siginfo_extra_v8plus_t;
+
+/*
+ * And the new one, intended to be used for Linux applications only
+ * (we have enough in there to work with clone).
+ * All the interesting bits are in the info field.
+ */
+struct new_signal_frame32 {
+ struct sparc_stackf32 ss;
+ __siginfo32_t info;
+ /* __siginfo_fpu32_t * */ u32 fpu_save;
+ unsigned int insns[2];
+ unsigned int extramask[_COMPAT_NSIG_WORDS - 1];
+ unsigned int extra_size; /* Should be sizeof(siginfo_extra_v8plus_t) */
+ /* Only valid if (info.si_regs.psr & (PSR_VERS|PSR_IMPL)) == PSR_V8PLUS */
+ siginfo_extra_v8plus_t v8plus;
+ __siginfo_fpu_t fpu_state;
+};
+
+typedef struct compat_siginfo{
+ int si_signo;
+ int si_errno;
+ int si_code;
+
+ union {
+ int _pad[SI_PAD_SIZE32];
+
+ /* kill() */
+ struct {
+ compat_pid_t _pid; /* sender's pid */
+ unsigned int _uid; /* sender's uid */
+ } _kill;
+
+ /* POSIX.1b timers */
+ struct {
+ timer_t _tid; /* timer id */
+ int _overrun; /* overrun count */
+ compat_sigval_t _sigval; /* same as below */
+ int _sys_private; /* not to be passed to user */
+ } _timer;
+
+ /* POSIX.1b signals */
+ struct {
+ compat_pid_t _pid; /* sender's pid */
+ unsigned int _uid; /* sender's uid */
+ compat_sigval_t _sigval;
+ } _rt;
+
+ /* SIGCHLD */
+ struct {
+ compat_pid_t _pid; /* which child */
+ unsigned int _uid; /* sender's uid */
+ int _status; /* exit code */
+ compat_clock_t _utime;
+ compat_clock_t _stime;
+ } _sigchld;
+
+ /* SIGILL, SIGFPE, SIGSEGV, SIGBUS, SIGEMT */
+ struct {
+ u32 _addr; /* faulting insn/memory ref. */
+ int _trapno;
+ } _sigfault;
+
+ /* SIGPOLL */
+ struct {
+ int _band; /* POLL_IN, POLL_OUT, POLL_MSG */
+ int _fd;
+ } _sigpoll;
+ } _sifields;
+}compat_siginfo_t;
+
+struct rt_signal_frame32 {
+ struct sparc_stackf32 ss;
+ compat_siginfo_t info;
+ struct pt_regs32 regs;
+ compat_sigset_t mask;
+ /* __siginfo_fpu32_t * */ u32 fpu_save;
+ unsigned int insns[2];
+ stack_t32 stack;
+ unsigned int extra_size; /* Should be sizeof(siginfo_extra_v8plus_t) */
+ /* Only valid if (regs.psr & (PSR_VERS|PSR_IMPL)) == PSR_V8PLUS */
+ siginfo_extra_v8plus_t v8plus;
+ __siginfo_fpu_t fpu_state;
+};
+
+/* Align macros */
+#define SF_ALIGNEDSZ (((sizeof(struct signal_sframe32) + 7) & (~7)))
+#define NF_ALIGNEDSZ (((sizeof(struct new_signal_frame32) + 7) & (~7)))
+#define RT_ALIGNEDSZ (((sizeof(struct rt_signal_frame32) + 7) & (~7)))
+
+int copy_siginfo_to_user32(compat_siginfo_t __user *to, siginfo_t *from)
+{
+ int err;
+
+ if (!access_ok(VERIFY_WRITE, to, sizeof(compat_siginfo_t)))
+ return -EFAULT;
+
+ /* If you change siginfo_t structure, please be sure
+ this code is fixed accordingly.
+ It should never copy any pad contained in the structure
+ to avoid security leaks, but must copy the generic
+ 3 ints plus the relevant union member.
+ This routine must convert siginfo from 64bit to 32bit as well
+ at the same time. */
+ err = __put_user(from->si_signo, &to->si_signo);
+ err |= __put_user(from->si_errno, &to->si_errno);
+ err |= __put_user((short)from->si_code, &to->si_code);
+ if (from->si_code < 0)
+ err |= __copy_to_user(&to->_sifields._pad, &from->_sifields._pad, SI_PAD_SIZE);
+ else {
+ switch (from->si_code >> 16) {
+ case __SI_TIMER >> 16:
+ err |= __put_user(from->si_tid, &to->si_tid);
+ err |= __put_user(from->si_overrun, &to->si_overrun);
+ err |= __put_user(from->si_int, &to->si_int);
+ break;
+ case __SI_CHLD >> 16:
+ err |= __put_user(from->si_utime, &to->si_utime);
+ err |= __put_user(from->si_stime, &to->si_stime);
+ err |= __put_user(from->si_status, &to->si_status);
+ default:
+ err |= __put_user(from->si_pid, &to->si_pid);
+ err |= __put_user(from->si_uid, &to->si_uid);
+ break;
+ case __SI_FAULT >> 16:
+ case __SI_POLL >> 16:
+ err |= __put_user(from->si_trapno, &to->si_trapno);
+ err |= __put_user((unsigned long)from->si_addr, &to->si_addr);
+ break;
+ case __SI_RT >> 16: /* This is not generated by the kernel as of now. */
+ case __SI_MESGQ >> 16:
+ err |= __put_user(from->si_pid, &to->si_pid);
+ err |= __put_user(from->si_uid, &to->si_uid);
+ err |= __put_user(from->si_int, &to->si_int);
+ break;
+ }
+ }
+ return err;
+}
+
+/* CAUTION: This is just a very minimalist implementation for the
+ * sake of compat_sys_rt_sigqueueinfo()
+ */
+int copy_siginfo_from_user32(siginfo_t *to, compat_siginfo_t __user *from)
+{
+ if (!access_ok(VERIFY_WRITE, from, sizeof(compat_siginfo_t)))
+ return -EFAULT;
+
+ if (copy_from_user(to, from, 3*sizeof(int)) ||
+ copy_from_user(to->_sifields._pad, from->_sifields._pad,
+ SI_PAD_SIZE))
+ return -EFAULT;
+
+ return 0;
+}
+
+/*
+ * atomically swap in the new signal mask, and wait for a signal.
+ * This is really tricky on the Sparc, watch out...
+ */
+asmlinkage void _sigpause32_common(compat_old_sigset_t set, struct pt_regs *regs)
+{
+ sigset_t saveset;
+
+ set &= _BLOCKABLE;
+ spin_lock_irq(¤t->sighand->siglock);
+ saveset = current->blocked;
+ siginitset(¤t->blocked, set);
+ recalc_sigpending();
+ spin_unlock_irq(¤t->sighand->siglock);
+
+ regs->tpc = regs->tnpc;
+ regs->tnpc += 4;
+ if (test_thread_flag(TIF_32BIT)) {
+ regs->tpc &= 0xffffffff;
+ regs->tnpc &= 0xffffffff;
+ }
+
+ /* Condition codes and return value where set here for sigpause,
+ * and so got used by setup_frame, which again causes sigreturn()
+ * to return -EINTR.
+ */
+ while (1) {
+ current->state = TASK_INTERRUPTIBLE;
+ schedule();
+ /*
+ * Return -EINTR and set condition code here,
+ * so the interrupted system call actually returns
+ * these.
+ */
+ regs->tstate |= TSTATE_ICARRY;
+ regs->u_regs[UREG_I0] = EINTR;
+ if (do_signal32(&saveset, regs, 0, 0))
+ return;
+ }
+}
+
+asmlinkage void do_rt_sigsuspend32(u32 uset, size_t sigsetsize, struct pt_regs *regs)
+{
+ sigset_t oldset, set;
+ compat_sigset_t set32;
+
+ /* XXX: Don't preclude handling different sized sigset_t's. */
+ if (((compat_size_t)sigsetsize) != sizeof(sigset_t)) {
+ regs->tstate |= TSTATE_ICARRY;
+ regs->u_regs[UREG_I0] = EINVAL;
+ return;
+ }
+ if (copy_from_user(&set32, compat_ptr(uset), sizeof(set32))) {
+ regs->tstate |= TSTATE_ICARRY;
+ regs->u_regs[UREG_I0] = EFAULT;
+ return;
+ }
+ switch (_NSIG_WORDS) {
+ case 4: set.sig[3] = set32.sig[6] + (((long)set32.sig[7]) << 32);
+ case 3: set.sig[2] = set32.sig[4] + (((long)set32.sig[5]) << 32);
+ case 2: set.sig[1] = set32.sig[2] + (((long)set32.sig[3]) << 32);
+ case 1: set.sig[0] = set32.sig[0] + (((long)set32.sig[1]) << 32);
+ }
+ sigdelsetmask(&set, ~_BLOCKABLE);
+ spin_lock_irq(¤t->sighand->siglock);
+ oldset = current->blocked;
+ current->blocked = set;
+ recalc_sigpending();
+ spin_unlock_irq(¤t->sighand->siglock);
+
+ regs->tpc = regs->tnpc;
+ regs->tnpc += 4;
+ if (test_thread_flag(TIF_32BIT)) {
+ regs->tpc &= 0xffffffff;
+ regs->tnpc &= 0xffffffff;
+ }
+
+ /* Condition codes and return value where set here for sigpause,
+ * and so got used by setup_frame, which again causes sigreturn()
+ * to return -EINTR.
+ */
+ while (1) {
+ current->state = TASK_INTERRUPTIBLE;
+ schedule();
+ /*
+ * Return -EINTR and set condition code here,
+ * so the interrupted system call actually returns
+ * these.
+ */
+ regs->tstate |= TSTATE_ICARRY;
+ regs->u_regs[UREG_I0] = EINTR;
+ if (do_signal32(&oldset, regs, 0, 0))
+ return;
+ }
+}
+
+static int restore_fpu_state32(struct pt_regs *regs, __siginfo_fpu_t __user *fpu)
+{
+ unsigned long *fpregs = current_thread_info()->fpregs;
+ unsigned long fprs;
+ int err;
+
+ err = __get_user(fprs, &fpu->si_fprs);
+ fprs_write(0);
+ regs->tstate &= ~TSTATE_PEF;
+ if (fprs & FPRS_DL)
+ err |= copy_from_user(fpregs, &fpu->si_float_regs[0], (sizeof(unsigned int) * 32));
+ if (fprs & FPRS_DU)
+ err |= copy_from_user(fpregs+16, &fpu->si_float_regs[32], (sizeof(unsigned int) * 32));
+ err |= __get_user(current_thread_info()->xfsr[0], &fpu->si_fsr);
+ err |= __get_user(current_thread_info()->gsr[0], &fpu->si_gsr);
+ current_thread_info()->fpsaved[0] |= fprs;
+ return err;
+}
+
+void do_new_sigreturn32(struct pt_regs *regs)
+{
+ struct new_signal_frame32 __user *sf;
+ unsigned int psr;
+ unsigned pc, npc, fpu_save;
+ sigset_t set;
+ unsigned seta[_COMPAT_NSIG_WORDS];
+ int err, i;
+
+ regs->u_regs[UREG_FP] &= 0x00000000ffffffffUL;
+ sf = (struct new_signal_frame32 __user *) regs->u_regs[UREG_FP];
+
+ /* 1. Make sure we are not getting garbage from the user */
+ if (!access_ok(VERIFY_READ, sf, sizeof(*sf)) ||
+ (((unsigned long) sf) & 3))
+ goto segv;
+
+ get_user(pc, &sf->info.si_regs.pc);
+ __get_user(npc, &sf->info.si_regs.npc);
+
+ if ((pc | npc) & 3)
+ goto segv;
+
+ if (test_thread_flag(TIF_32BIT)) {
+ pc &= 0xffffffff;
+ npc &= 0xffffffff;
+ }
+ regs->tpc = pc;
+ regs->tnpc = npc;
+
+ /* 2. Restore the state */
+ err = __get_user(regs->y, &sf->info.si_regs.y);
+ err |= __get_user(psr, &sf->info.si_regs.psr);
+
+ for (i = UREG_G1; i <= UREG_I7; i++)
+ err |= __get_user(regs->u_regs[i], &sf->info.si_regs.u_regs[i]);
+ if ((psr & (PSR_VERS|PSR_IMPL)) == PSR_V8PLUS) {
+ err |= __get_user(i, &sf->v8plus.g_upper[0]);
+ if (i == SIGINFO_EXTRA_V8PLUS_MAGIC) {
+ unsigned long asi;
+
+ for (i = UREG_G1; i <= UREG_I7; i++)
+ err |= __get_user(((u32 *)regs->u_regs)[2*i], &sf->v8plus.g_upper[i]);
+ err |= __get_user(asi, &sf->v8plus.asi);
+ regs->tstate &= ~TSTATE_ASI;
+ regs->tstate |= ((asi & 0xffUL) << 24UL);
+ }
+ }
+
+ /* User can only change condition codes in %tstate. */
+ regs->tstate &= ~(TSTATE_ICC|TSTATE_XCC);
+ regs->tstate |= psr_to_tstate_icc(psr);
+
+ err |= __get_user(fpu_save, &sf->fpu_save);
+ if (fpu_save)
+ err |= restore_fpu_state32(regs, &sf->fpu_state);
+ err |= __get_user(seta[0], &sf->info.si_mask);
+ err |= copy_from_user(seta+1, &sf->extramask,
+ (_COMPAT_NSIG_WORDS - 1) * sizeof(unsigned int));
+ if (err)
+ goto segv;
+ switch (_NSIG_WORDS) {
+ case 4: set.sig[3] = seta[6] + (((long)seta[7]) << 32);
+ case 3: set.sig[2] = seta[4] + (((long)seta[5]) << 32);
+ case 2: set.sig[1] = seta[2] + (((long)seta[3]) << 32);
+ case 1: set.sig[0] = seta[0] + (((long)seta[1]) << 32);
+ }
+ sigdelsetmask(&set, ~_BLOCKABLE);
+ spin_lock_irq(¤t->sighand->siglock);
+ current->blocked = set;
+ recalc_sigpending();
+ spin_unlock_irq(¤t->sighand->siglock);
+ return;
+
+segv:
+ force_sig(SIGSEGV, current);
+}
+
+asmlinkage void do_sigreturn32(struct pt_regs *regs)
+{
+ struct sigcontext32 __user *scptr;
+ unsigned int pc, npc, psr;
+ sigset_t set;
+ unsigned int seta[_COMPAT_NSIG_WORDS];
+ int err;
+
+ /* Always make any pending restarted system calls return -EINTR */
+ current_thread_info()->restart_block.fn = do_no_restart_syscall;
+
+ synchronize_user_stack();
+ if (test_thread_flag(TIF_NEWSIGNALS)) {
+ do_new_sigreturn32(regs);
+ return;
+ }
+
+ scptr = (struct sigcontext32 __user *)
+ (regs->u_regs[UREG_I0] & 0x00000000ffffffffUL);
+ /* Check sanity of the user arg. */
+ if (!access_ok(VERIFY_READ, scptr, sizeof(struct sigcontext32)) ||
+ (((unsigned long) scptr) & 3))
+ goto segv;
+
+ err = __get_user(pc, &scptr->sigc_pc);
+ err |= __get_user(npc, &scptr->sigc_npc);
+
+ if ((pc | npc) & 3)
+ goto segv; /* Nice try. */
+
+ err |= __get_user(seta[0], &scptr->sigc_mask);
+ /* Note that scptr + 1 points to extramask */
+ err |= copy_from_user(seta+1, scptr + 1,
+ (_COMPAT_NSIG_WORDS - 1) * sizeof(unsigned int));
+ if (err)
+ goto segv;
+ switch (_NSIG_WORDS) {
+ case 4: set.sig[3] = seta[6] + (((long)seta[7]) << 32);
+ case 3: set.sig[2] = seta[4] + (((long)seta[5]) << 32);
+ case 2: set.sig[1] = seta[2] + (((long)seta[3]) << 32);
+ case 1: set.sig[0] = seta[0] + (((long)seta[1]) << 32);
+ }
+ sigdelsetmask(&set, ~_BLOCKABLE);
+ spin_lock_irq(¤t->sighand->siglock);
+ current->blocked = set;
+ recalc_sigpending();
+ spin_unlock_irq(¤t->sighand->siglock);
+
+ if (test_thread_flag(TIF_32BIT)) {
+ pc &= 0xffffffff;
+ npc &= 0xffffffff;
+ }
+ regs->tpc = pc;
+ regs->tnpc = npc;
+ err = __get_user(regs->u_regs[UREG_FP], &scptr->sigc_sp);
+ err |= __get_user(regs->u_regs[UREG_I0], &scptr->sigc_o0);
+ err |= __get_user(regs->u_regs[UREG_G1], &scptr->sigc_g1);
+
+ /* User can only change condition codes in %tstate. */
+ err |= __get_user(psr, &scptr->sigc_psr);
+ if (err)
+ goto segv;
+ regs->tstate &= ~(TSTATE_ICC|TSTATE_XCC);
+ regs->tstate |= psr_to_tstate_icc(psr);
+ return;
+
+segv:
+ force_sig(SIGSEGV, current);
+}
+
+asmlinkage void do_rt_sigreturn32(struct pt_regs *regs)
+{
+ struct rt_signal_frame32 __user *sf;
+ unsigned int psr, pc, npc, fpu_save, u_ss_sp;
+ mm_segment_t old_fs;
+ sigset_t set;
+ compat_sigset_t seta;
+ stack_t st;
+ int err, i;
+
+ /* Always make any pending restarted system calls return -EINTR */
+ current_thread_info()->restart_block.fn = do_no_restart_syscall;
+
+ synchronize_user_stack();
+ regs->u_regs[UREG_FP] &= 0x00000000ffffffffUL;
+ sf = (struct rt_signal_frame32 __user *) regs->u_regs[UREG_FP];
+
+ /* 1. Make sure we are not getting garbage from the user */
+ if (!access_ok(VERIFY_READ, sf, sizeof(*sf)) ||
+ (((unsigned long) sf) & 3))
+ goto segv;
+
+ get_user(pc, &sf->regs.pc);
+ __get_user(npc, &sf->regs.npc);
+
+ if ((pc | npc) & 3)
+ goto segv;
+
+ if (test_thread_flag(TIF_32BIT)) {
+ pc &= 0xffffffff;
+ npc &= 0xffffffff;
+ }
+ regs->tpc = pc;
+ regs->tnpc = npc;
+
+ /* 2. Restore the state */
+ err = __get_user(regs->y, &sf->regs.y);
+ err |= __get_user(psr, &sf->regs.psr);
+
+ for (i = UREG_G1; i <= UREG_I7; i++)
+ err |= __get_user(regs->u_regs[i], &sf->regs.u_regs[i]);
+ if ((psr & (PSR_VERS|PSR_IMPL)) == PSR_V8PLUS) {
+ err |= __get_user(i, &sf->v8plus.g_upper[0]);
+ if (i == SIGINFO_EXTRA_V8PLUS_MAGIC) {
+ unsigned long asi;
+
+ for (i = UREG_G1; i <= UREG_I7; i++)
+ err |= __get_user(((u32 *)regs->u_regs)[2*i], &sf->v8plus.g_upper[i]);
+ err |= __get_user(asi, &sf->v8plus.asi);
+ regs->tstate &= ~TSTATE_ASI;
+ regs->tstate |= ((asi & 0xffUL) << 24UL);
+ }
+ }
+
+ /* User can only change condition codes in %tstate. */
+ regs->tstate &= ~(TSTATE_ICC|TSTATE_XCC);
+ regs->tstate |= psr_to_tstate_icc(psr);
+
+ err |= __get_user(fpu_save, &sf->fpu_save);
+ if (fpu_save)
+ err |= restore_fpu_state32(regs, &sf->fpu_state);
+ err |= copy_from_user(&seta, &sf->mask, sizeof(compat_sigset_t));
+ err |= __get_user(u_ss_sp, &sf->stack.ss_sp);
+ st.ss_sp = compat_ptr(u_ss_sp);
+ err |= __get_user(st.ss_flags, &sf->stack.ss_flags);
+ err |= __get_user(st.ss_size, &sf->stack.ss_size);
+ if (err)
+ goto segv;
+
+ /* 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, (unsigned long)sf);
+ set_fs(old_fs);
+
+ switch (_NSIG_WORDS) {
+ case 4: set.sig[3] = seta.sig[6] + (((long)seta.sig[7]) << 32);
+ case 3: set.sig[2] = seta.sig[4] + (((long)seta.sig[5]) << 32);
+ case 2: set.sig[1] = seta.sig[2] + (((long)seta.sig[3]) << 32);
+ case 1: set.sig[0] = seta.sig[0] + (((long)seta.sig[1]) << 32);
+ }
+ sigdelsetmask(&set, ~_BLOCKABLE);
+ spin_lock_irq(¤t->sighand->siglock);
+ current->blocked = set;
+ recalc_sigpending();
+ spin_unlock_irq(¤t->sighand->siglock);
+ return;
+segv:
+ force_sig(SIGSEGV, current);
+}
+
+/* Checks if the fp is valid */
+static int invalid_frame_pointer(void __user *fp, int fplen)
+{
+ if ((((unsigned long) fp) & 7) || ((unsigned long)fp) > 0x100000000ULL - fplen)
+ return 1;
+ return 0;
+}
+
+static void __user *get_sigframe(struct sigaction *sa, struct pt_regs *regs, unsigned long framesize)
+{
+ unsigned long sp;
+
+ regs->u_regs[UREG_FP] &= 0x00000000ffffffffUL;
+ sp = regs->u_regs[UREG_FP];
+
+ /* This is the X/Open sanctioned signal stack switching. */
+ if (sa->sa_flags & SA_ONSTACK) {
+ if (!on_sig_stack(sp) && !((current->sas_ss_sp + current->sas_ss_size) & 7))
+ sp = current->sas_ss_sp + current->sas_ss_size;
+ }
+ return (void __user *)(sp - framesize);
+}
+
+static void
+setup_frame32(struct sigaction *sa, struct pt_regs *regs, int signr, sigset_t *oldset, siginfo_t *info)
+{
+ struct signal_sframe32 __user *sframep;
+ struct sigcontext32 __user *sc;
+ unsigned int seta[_COMPAT_NSIG_WORDS];
+ int err = 0;
+ void __user *sig_address;
+ int sig_code;
+ unsigned long pc = regs->tpc;
+ unsigned long npc = regs->tnpc;
+ unsigned int psr;
+
+ if (test_thread_flag(TIF_32BIT)) {
+ pc &= 0xffffffff;
+ npc &= 0xffffffff;
+ }
+
+ synchronize_user_stack();
+ save_and_clear_fpu();
+
+ sframep = (struct signal_sframe32 __user *)
+ get_sigframe(sa, regs, SF_ALIGNEDSZ);
+ if (invalid_frame_pointer(sframep, sizeof(*sframep))){
+ /* Don't change signal code and address, so that
+ * post mortem debuggers can have a look.
+ */
+ do_exit(SIGILL);
+ }
+
+ sc = &sframep->sig_context;
+
+ /* We've already made sure frame pointer isn't in kernel space... */
+ err = __put_user((sas_ss_flags(regs->u_regs[UREG_FP]) == SS_ONSTACK),
+ &sc->sigc_onstack);
+
+ switch (_NSIG_WORDS) {
+ case 4: seta[7] = (oldset->sig[3] >> 32);
+ seta[6] = oldset->sig[3];
+ case 3: seta[5] = (oldset->sig[2] >> 32);
+ seta[4] = oldset->sig[2];
+ case 2: seta[3] = (oldset->sig[1] >> 32);
+ seta[2] = oldset->sig[1];
+ case 1: seta[1] = (oldset->sig[0] >> 32);
+ seta[0] = oldset->sig[0];
+ }
+ err |= __put_user(seta[0], &sc->sigc_mask);
+ err |= __copy_to_user(sframep->extramask, seta + 1,
+ (_COMPAT_NSIG_WORDS - 1) * sizeof(unsigned int));
+ err |= __put_user(regs->u_regs[UREG_FP], &sc->sigc_sp);
+ err |= __put_user(pc, &sc->sigc_pc);
+ err |= __put_user(npc, &sc->sigc_npc);
+ psr = tstate_to_psr(regs->tstate);
+ if (current_thread_info()->fpsaved[0] & FPRS_FEF)
+ psr |= PSR_EF;
+ err |= __put_user(psr, &sc->sigc_psr);
+ err |= __put_user(regs->u_regs[UREG_G1], &sc->sigc_g1);
+ err |= __put_user(regs->u_regs[UREG_I0], &sc->sigc_o0);
+ err |= __put_user(get_thread_wsaved(), &sc->sigc_oswins);
+
+ err |= copy_in_user((u32 __user *)sframep,
+ (u32 __user *)(regs->u_regs[UREG_FP]),
+ sizeof(struct reg_window32));
+
+ set_thread_wsaved(0); /* So process is allowed to execute. */
+ err |= __put_user(signr, &sframep->sig_num);
+ sig_address = NULL;
+ sig_code = 0;
+ if (SI_FROMKERNEL (info) && (info->si_code & __SI_MASK) == __SI_FAULT) {
+ sig_address = info->si_addr;
+ switch (signr) {
+ case SIGSEGV:
+ switch (info->si_code) {
+ case SEGV_MAPERR: sig_code = SUBSIG_NOMAPPING; break;
+ default: sig_code = SUBSIG_PROTECTION; break;
+ }
+ break;
+ case SIGILL:
+ switch (info->si_code) {
+ case ILL_ILLOPC: sig_code = SUBSIG_ILLINST; break;
+ case ILL_PRVOPC: sig_code = SUBSIG_PRIVINST; break;
+ case ILL_ILLTRP: sig_code = SUBSIG_BADTRAP(info->si_trapno); break;
+ default: sig_code = SUBSIG_STACK; break;
+ }
+ break;
+ case SIGFPE:
+ switch (info->si_code) {
+ case FPE_INTDIV: sig_code = SUBSIG_IDIVZERO; break;
+ case FPE_INTOVF: sig_code = SUBSIG_FPINTOVFL; break;
+ case FPE_FLTDIV: sig_code = SUBSIG_FPDIVZERO; break;
+ case FPE_FLTOVF: sig_code = SUBSIG_FPOVFLOW; break;
+ case FPE_FLTUND: sig_code = SUBSIG_FPUNFLOW; break;
+ case FPE_FLTRES: sig_code = SUBSIG_FPINEXACT; break;
+ case FPE_FLTINV: sig_code = SUBSIG_FPOPERROR; break;
+ default: sig_code = SUBSIG_FPERROR; break;
+ }
+ break;
+ case SIGBUS:
+ switch (info->si_code) {
+ case BUS_ADRALN: sig_code = SUBSIG_ALIGNMENT; break;
+ case BUS_ADRERR: sig_code = SUBSIG_MISCERROR; break;
+ default: sig_code = SUBSIG_BUSTIMEOUT; break;
+ }
+ break;
+ case SIGEMT:
+ switch (info->si_code) {
+ case EMT_TAGOVF: sig_code = SUBSIG_TAG; break;
+ }
+ break;
+ case SIGSYS:
+ if (info->si_code == (__SI_FAULT|0x100)) {
+ /* See sys_sunos32.c */
+ sig_code = info->si_trapno;
+ break;
+ }
+ default:
+ sig_address = NULL;
+ }
+ }
+ err |= __put_user(ptr_to_compat(sig_address), &sframep->sig_address);
+ err |= __put_user(sig_code, &sframep->sig_code);
+ err |= __put_user(ptr_to_compat(sc), &sframep->sig_scptr);
+ if (err)
+ goto sigsegv;
+
+ regs->u_regs[UREG_FP] = (unsigned long) sframep;
+ regs->tpc = (unsigned long) sa->sa_handler;
+ regs->tnpc = (regs->tpc + 4);
+ if (test_thread_flag(TIF_32BIT)) {
+ regs->tpc &= 0xffffffff;
+ regs->tnpc &= 0xffffffff;
+ }
+ return;
+
+sigsegv:
+ force_sigsegv(signr, current);
+}
+
+
+static int save_fpu_state32(struct pt_regs *regs, __siginfo_fpu_t __user *fpu)
+{
+ unsigned long *fpregs = current_thread_info()->fpregs;
+ unsigned long fprs;
+ int err = 0;
+
+ fprs = current_thread_info()->fpsaved[0];
+ if (fprs & FPRS_DL)
+ err |= copy_to_user(&fpu->si_float_regs[0], fpregs,
+ (sizeof(unsigned int) * 32));
+ if (fprs & FPRS_DU)
+ err |= copy_to_user(&fpu->si_float_regs[32], fpregs+16,
+ (sizeof(unsigned int) * 32));
+ err |= __put_user(current_thread_info()->xfsr[0], &fpu->si_fsr);
+ err |= __put_user(current_thread_info()->gsr[0], &fpu->si_gsr);
+ err |= __put_user(fprs, &fpu->si_fprs);
+
+ return err;
+}
+
+static void new_setup_frame32(struct k_sigaction *ka, struct pt_regs *regs,
+ int signo, sigset_t *oldset)
+{
+ struct new_signal_frame32 __user *sf;
+ int sigframe_size;
+ u32 psr;
+ int i, err;
+ unsigned int seta[_COMPAT_NSIG_WORDS];
+
+ /* 1. Make sure everything is clean */
+ synchronize_user_stack();
+ save_and_clear_fpu();
+
+ sigframe_size = NF_ALIGNEDSZ;
+ if (!(current_thread_info()->fpsaved[0] & FPRS_FEF))
+ sigframe_size -= sizeof(__siginfo_fpu_t);
+
+ sf = (struct new_signal_frame32 __user *)
+ get_sigframe(&ka->sa, regs, sigframe_size);
+
+ if (invalid_frame_pointer(sf, sigframe_size))
+ goto sigill;
+
+ if (get_thread_wsaved() != 0)
+ goto sigill;
+
+ /* 2. Save the current process state */
+ if (test_thread_flag(TIF_32BIT)) {
+ regs->tpc &= 0xffffffff;
+ regs->tnpc &= 0xffffffff;
+ }
+ err = put_user(regs->tpc, &sf->info.si_regs.pc);
+ err |= __put_user(regs->tnpc, &sf->info.si_regs.npc);
+ err |= __put_user(regs->y, &sf->info.si_regs.y);
+ psr = tstate_to_psr(regs->tstate);
+ if (current_thread_info()->fpsaved[0] & FPRS_FEF)
+ psr |= PSR_EF;
+ err |= __put_user(psr, &sf->info.si_regs.psr);
+ for (i = 0; i < 16; i++)
+ err |= __put_user(regs->u_regs[i], &sf->info.si_regs.u_regs[i]);
+ err |= __put_user(sizeof(siginfo_extra_v8plus_t), &sf->extra_size);
+ err |= __put_user(SIGINFO_EXTRA_V8PLUS_MAGIC, &sf->v8plus.g_upper[0]);
+ for (i = 1; i < 16; i++)
+ err |= __put_user(((u32 *)regs->u_regs)[2*i],
+ &sf->v8plus.g_upper[i]);
+ err |= __put_user((regs->tstate & TSTATE_ASI) >> 24UL,
+ &sf->v8plus.asi);
+
+ if (psr & PSR_EF) {
+ err |= save_fpu_state32(regs, &sf->fpu_state);
+ err |= __put_user((u64)&sf->fpu_state, &sf->fpu_save);
+ } else {
+ err |= __put_user(0, &sf->fpu_save);
+ }
+
+ switch (_NSIG_WORDS) {
+ case 4: seta[7] = (oldset->sig[3] >> 32);
+ seta[6] = oldset->sig[3];
+ case 3: seta[5] = (oldset->sig[2] >> 32);
+ seta[4] = oldset->sig[2];
+ case 2: seta[3] = (oldset->sig[1] >> 32);
+ seta[2] = oldset->sig[1];
+ case 1: seta[1] = (oldset->sig[0] >> 32);
+ seta[0] = oldset->sig[0];
+ }
+ err |= __put_user(seta[0], &sf->info.si_mask);
+ err |= __copy_to_user(sf->extramask, seta + 1,
+ (_COMPAT_NSIG_WORDS - 1) * sizeof(unsigned int));
+
+ err |= copy_in_user((u32 __user *)sf,
+ (u32 __user *)(regs->u_regs[UREG_FP]),
+ sizeof(struct reg_window32));
+
+ if (err)
+ goto sigsegv;
+
+ /* 3. signal handler back-trampoline and parameters */
+ regs->u_regs[UREG_FP] = (unsigned long) sf;
+ regs->u_regs[UREG_I0] = signo;
+ regs->u_regs[UREG_I1] = (unsigned long) &sf->info;
+ regs->u_regs[UREG_I2] = (unsigned long) &sf->info;
+
+ /* 4. signal handler */
+ regs->tpc = (unsigned long) ka->sa.sa_handler;
+ regs->tnpc = (regs->tpc + 4);
+ if (test_thread_flag(TIF_32BIT)) {
+ regs->tpc &= 0xffffffff;
+ regs->tnpc &= 0xffffffff;
+ }
+
+ /* 5. return to kernel instructions */
+ if (ka->ka_restorer) {
+ regs->u_regs[UREG_I7] = (unsigned long)ka->ka_restorer;
+ } else {
+ /* Flush instruction space. */
+ unsigned long address = ((unsigned long)&(sf->insns[0]));
+ pgd_t *pgdp = pgd_offset(current->mm, address);
+ pud_t *pudp = pud_offset(pgdp, address);
+ pmd_t *pmdp = pmd_offset(pudp, address);
+ pte_t *ptep;
+
+ regs->u_regs[UREG_I7] = (unsigned long) (&(sf->insns[0]) - 2);
+
+ err = __put_user(0x821020d8, &sf->insns[0]); /*mov __NR_sigreturn, %g1*/
+ err |= __put_user(0x91d02010, &sf->insns[1]); /*t 0x10*/
+ if (err)
+ goto sigsegv;
+
+ preempt_disable();
+ ptep = pte_offset_map(pmdp, address);
+ if (pte_present(*ptep)) {
+ unsigned long page = (unsigned long)
+ page_address(pte_page(*ptep));
+
+ __asm__ __volatile__(
+ " membar #StoreStore\n"
+ " flush %0 + %1"
+ : : "r" (page), "r" (address & (PAGE_SIZE - 1))
+ : "memory");
+ }
+ pte_unmap(ptep);
+ preempt_enable();
+ }
+ return;
+
+sigill:
+ do_exit(SIGILL);
+sigsegv:
+ 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)
+{
+ struct rt_signal_frame32 __user *sf;
+ int sigframe_size;
+ u32 psr;
+ int i, err;
+ compat_sigset_t seta;
+
+ /* 1. Make sure everything is clean */
+ synchronize_user_stack();
+ save_and_clear_fpu();
+
+ sigframe_size = RT_ALIGNEDSZ;
+ if (!(current_thread_info()->fpsaved[0] & FPRS_FEF))
+ sigframe_size -= sizeof(__siginfo_fpu_t);
+
+ sf = (struct rt_signal_frame32 __user *)
+ get_sigframe(&ka->sa, regs, sigframe_size);
+
+ if (invalid_frame_pointer(sf, sigframe_size))
+ goto sigill;
+
+ if (get_thread_wsaved() != 0)
+ goto sigill;
+
+ /* 2. Save the current process state */
+ if (test_thread_flag(TIF_32BIT)) {
+ regs->tpc &= 0xffffffff;
+ regs->tnpc &= 0xffffffff;
+ }
+ err = put_user(regs->tpc, &sf->regs.pc);
+ err |= __put_user(regs->tnpc, &sf->regs.npc);
+ err |= __put_user(regs->y, &sf->regs.y);
+ psr = tstate_to_psr(regs->tstate);
+ if (current_thread_info()->fpsaved[0] & FPRS_FEF)
+ psr |= PSR_EF;
+ err |= __put_user(psr, &sf->regs.psr);
+ for (i = 0; i < 16; i++)
+ err |= __put_user(regs->u_regs[i], &sf->regs.u_regs[i]);
+ err |= __put_user(sizeof(siginfo_extra_v8plus_t), &sf->extra_size);
+ err |= __put_user(SIGINFO_EXTRA_V8PLUS_MAGIC, &sf->v8plus.g_upper[0]);
+ for (i = 1; i < 16; i++)
+ err |= __put_user(((u32 *)regs->u_regs)[2*i],
+ &sf->v8plus.g_upper[i]);
+ err |= __put_user((regs->tstate & TSTATE_ASI) >> 24UL,
+ &sf->v8plus.asi);
+
+ if (psr & PSR_EF) {
+ err |= save_fpu_state32(regs, &sf->fpu_state);
+ err |= __put_user((u64)&sf->fpu_state, &sf->fpu_save);
+ } else {
+ err |= __put_user(0, &sf->fpu_save);
+ }
+
+ /* Update the siginfo structure. */
+ err |= copy_siginfo_to_user32(&sf->info, info);
+
+ /* Setup sigaltstack */
+ err |= __put_user(current->sas_ss_sp, &sf->stack.ss_sp);
+ 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);
+
+ switch (_NSIG_WORDS) {
+ case 4: seta.sig[7] = (oldset->sig[3] >> 32);
+ seta.sig[6] = oldset->sig[3];
+ case 3: seta.sig[5] = (oldset->sig[2] >> 32);
+ seta.sig[4] = oldset->sig[2];
+ case 2: seta.sig[3] = (oldset->sig[1] >> 32);
+ seta.sig[2] = oldset->sig[1];
+ case 1: seta.sig[1] = (oldset->sig[0] >> 32);
+ seta.sig[0] = oldset->sig[0];
+ }
+ err |= __copy_to_user(&sf->mask, &seta, sizeof(compat_sigset_t));
+
+ err |= copy_in_user((u32 __user *)sf,
+ (u32 __user *)(regs->u_regs[UREG_FP]),
+ sizeof(struct reg_window32));
+ if (err)
+ goto sigsegv;
+
+ /* 3. signal handler back-trampoline and parameters */
+ regs->u_regs[UREG_FP] = (unsigned long) sf;
+ regs->u_regs[UREG_I0] = signr;
+ regs->u_regs[UREG_I1] = (unsigned long) &sf->info;
+ regs->u_regs[UREG_I2] = (unsigned long) &sf->regs;
+
+ /* 4. signal handler */
+ regs->tpc = (unsigned long) ka->sa.sa_handler;
+ regs->tnpc = (regs->tpc + 4);
+ if (test_thread_flag(TIF_32BIT)) {
+ regs->tpc &= 0xffffffff;
+ regs->tnpc &= 0xffffffff;
+ }
+
+ /* 5. return to kernel instructions */
+ if (ka->ka_restorer)
+ regs->u_regs[UREG_I7] = (unsigned long)ka->ka_restorer;
+ else {
+ /* Flush instruction space. */
+ unsigned long address = ((unsigned long)&(sf->insns[0]));
+ pgd_t *pgdp = pgd_offset(current->mm, address);
+ pud_t *pudp = pud_offset(pgdp, address);
+ pmd_t *pmdp = pmd_offset(pudp, address);
+ pte_t *ptep;
+
+ regs->u_regs[UREG_I7] = (unsigned long) (&(sf->insns[0]) - 2);
+
+ /* mov __NR_rt_sigreturn, %g1 */
+ err |= __put_user(0x82102065, &sf->insns[0]);
+
+ /* t 0x10 */
+ err |= __put_user(0x91d02010, &sf->insns[1]);
+ if (err)
+ goto sigsegv;
+
+ preempt_disable();
+ ptep = pte_offset_map(pmdp, address);
+ if (pte_present(*ptep)) {
+ unsigned long page = (unsigned long)
+ page_address(pte_page(*ptep));
+
+ __asm__ __volatile__(
+ " membar #StoreStore\n"
+ " flush %0 + %1"
+ : : "r" (page), "r" (address & (PAGE_SIZE - 1))
+ : "memory");
+ }
+ pte_unmap(ptep);
+ preempt_enable();
+ }
+ return;
+
+sigill:
+ do_exit(SIGILL);
+sigsegv:
+ force_sigsegv(signr, current);
+}
+
+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)
+{
+ 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_NOMASK)) {
+ spin_lock_irq(¤t->sighand->siglock);
+ sigorsets(¤t->blocked,¤t->blocked,&ka->sa.sa_mask);
+ sigaddset(¤t->blocked,signr);
+ recalc_sigpending();
+ spin_unlock_irq(¤t->sighand->siglock);
+ }
+}
+
+static inline void syscall_restart32(unsigned long orig_i0, struct pt_regs *regs,
+ struct sigaction *sa)
+{
+ switch (regs->u_regs[UREG_I0]) {
+ case ERESTART_RESTARTBLOCK:
+ case ERESTARTNOHAND:
+ no_system_call_restart:
+ regs->u_regs[UREG_I0] = EINTR;
+ regs->tstate |= TSTATE_ICARRY;
+ break;
+ case ERESTARTSYS:
+ if (!(sa->sa_flags & SA_RESTART))
+ goto no_system_call_restart;
+ /* fallthrough */
+ case ERESTARTNOINTR:
+ regs->u_regs[UREG_I0] = orig_i0;
+ regs->tpc -= 4;
+ regs->tnpc -= 4;
+ }
+}
+
+/* Note that 'init' is a special process: it doesn't get signals it doesn't
+ * want to handle. Thus you cannot kill init even with a SIGKILL even by
+ * mistake.
+ */
+int do_signal32(sigset_t *oldset, struct pt_regs * regs,
+ unsigned long orig_i0, int restart_syscall)
+{
+ siginfo_t info;
+ struct signal_deliver_cookie cookie;
+ struct k_sigaction ka;
+ 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);
+ if (signr > 0) {
+ if (cookie.restart_syscall)
+ syscall_restart32(orig_i0, regs, &ka.sa);
+ handle_signal32(signr, &ka, &info, oldset,
+ regs, svr4_signal);
+ return 1;
+ }
+ 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->tpc -= 4;
+ regs->tnpc -= 4;
+ }
+ if (cookie.restart_syscall &&
+ regs->u_regs[UREG_I0] == ERESTART_RESTARTBLOCK) {
+ regs->u_regs[UREG_G1] = __NR_restart_syscall;
+ regs->tpc -= 4;
+ regs->tnpc -= 4;
+ }
+ return 0;
+}
+
+struct sigstack32 {
+ u32 the_stack;
+ int cur_status;
+};
+
+asmlinkage int do_sys32_sigstack(u32 u_ssptr, u32 u_ossptr, unsigned long sp)
+{
+ struct sigstack32 __user *ssptr =
+ (struct sigstack32 __user *)((unsigned long)(u_ssptr));
+ struct sigstack32 __user *ossptr =
+ (struct sigstack32 __user *)((unsigned long)(u_ossptr));
+ int ret = -EFAULT;
+
+ /* First see if old state is wanted. */
+ if (ossptr) {
+ if (put_user(current->sas_ss_sp + current->sas_ss_size,
+ &ossptr->the_stack) ||
+ __put_user(on_sig_stack(sp), &ossptr->cur_status))
+ goto out;
+ }
+
+ /* Now see if we want to update the new state. */
+ if (ssptr) {
+ u32 ss_sp;
+
+ if (get_user(ss_sp, &ssptr->the_stack))
+ goto out;
+
+ /* If the current stack was set with sigaltstack, don't
+ * swap stacks while we are on it.
+ */
+ ret = -EPERM;
+ if (current->sas_ss_sp && on_sig_stack(sp))
+ goto out;
+
+ /* Since we don't know the extent of the stack, and we don't
+ * track onstack-ness, but rather calculate it, we must
+ * presume a size. Ho hum this interface is lossy.
+ */
+ current->sas_ss_sp = (unsigned long)ss_sp - SIGSTKSZ;
+ current->sas_ss_size = SIGSTKSZ;
+ }
+
+ ret = 0;
+out:
+ return ret;
+}
+
+asmlinkage long do_sys32_sigaltstack(u32 ussa, u32 uossa, unsigned long sp)
+{
+ stack_t uss, uoss;
+ u32 u_ss_sp = 0;
+ int ret;
+ mm_segment_t old_fs;
+ stack_t32 __user *uss32 = compat_ptr(ussa);
+ stack_t32 __user *uoss32 = compat_ptr(uossa);
+
+ if (ussa && (get_user(u_ss_sp, &uss32->ss_sp) ||
+ __get_user(uss.ss_flags, &uss32->ss_flags) ||
+ __get_user(uss.ss_size, &uss32->ss_size)))
+ return -EFAULT;
+ uss.ss_sp = compat_ptr(u_ss_sp);
+ old_fs = get_fs();
+ set_fs(KERNEL_DS);
+ ret = do_sigaltstack(ussa ? (stack_t __user *) &uss : NULL,
+ uossa ? (stack_t __user *) &uoss : NULL, sp);
+ set_fs(old_fs);
+ if (!ret && uossa && (put_user(ptr_to_compat(uoss.ss_sp), &uoss32->ss_sp) ||
+ __put_user(uoss.ss_flags, &uoss32->ss_flags) ||
+ __put_user(uoss.ss_size, &uoss32->ss_size)))
+ return -EFAULT;
+ return ret;
+}
