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authorLinus Torvalds <torvalds@woody.linux-foundation.org>2007-06-07 17:10:19 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-06-07 17:10:19 -0700
commitc8d8170feb824875baf68f8aaecb181a6500ce81 (patch)
treefc215c0776597015cd7e02ef12e24fe60e74961e
parent34750bb15687fa03ba95a0ccb1307b0727bc308b (diff)
parentdf5e38703d647b160d7ba300b3d2fcb64a48549a (diff)
downloadlinux-2.6.34-ux500-c8d8170feb824875baf68f8aaecb181a6500ce81.tar.gz
Merge git://git.linux-xtensa.org/kernel/xtensa-feed
* git://git.linux-xtensa.org/kernel/xtensa-feed: Xtensa: use asm-generic/fcntl.h [XTENSA] Remove non-rt signal handling [XTENSA] Move common sections into bss sections [XTENSA] clean-up header files [XTENSA] Use generic 64-bit division [XTENSA] Remove multi-exported symbols from xtensa_ksyms.c [XTENSA] fix sources using deprecated assembler directive [XTENSA] Spelling fixes in arch/xtensa [XTENSA] fix bit operations in bitops.h
-rw-r--r--arch/xtensa/kernel/asm-offsets.c1
-rw-r--r--arch/xtensa/kernel/entry.S36
-rw-r--r--arch/xtensa/kernel/head.S19
-rw-r--r--arch/xtensa/kernel/pci.c2
-rw-r--r--arch/xtensa/kernel/setup.c1
-rw-r--r--arch/xtensa/kernel/signal.c795
-rw-r--r--arch/xtensa/kernel/vmlinux.lds.S78
-rw-r--r--arch/xtensa/kernel/xtensa_ksyms.c11
-rw-r--r--arch/xtensa/lib/strncpy_user.S33
-rw-r--r--arch/xtensa/lib/strnlen_user.S33
-rw-r--r--arch/xtensa/mm/init.c2
-rw-r--r--arch/xtensa/platform-iss/network.c2
-rw-r--r--include/asm-xtensa/bitops.h69
-rw-r--r--include/asm-xtensa/byteorder.h3
-rw-r--r--include/asm-xtensa/coprocessor.h8
-rw-r--r--include/asm-xtensa/div64.h15
-rw-r--r--include/asm-xtensa/elf.h3
-rw-r--r--include/asm-xtensa/fcntl.h100
-rw-r--r--include/asm-xtensa/mmu_context.h1
-rw-r--r--include/asm-xtensa/page.h2
-rw-r--r--include/asm-xtensa/param.h4
-rw-r--r--include/asm-xtensa/ptrace.h8
-rw-r--r--include/asm-xtensa/shmparam.h2
-rw-r--r--include/asm-xtensa/sigcontext.h24
-rw-r--r--include/asm-xtensa/thread_info.h2
-rw-r--r--include/asm-xtensa/unistd.h4
26 files changed, 475 insertions, 783 deletions
diff --git a/arch/xtensa/kernel/asm-offsets.c b/arch/xtensa/kernel/asm-offsets.c
index 698079b3a33..d0323cd6a2e 100644
--- a/arch/xtensa/kernel/asm-offsets.c
+++ b/arch/xtensa/kernel/asm-offsets.c
@@ -39,6 +39,7 @@ int main(void)
DEFINE(PT_LEND, offsetof (struct pt_regs, lend));
DEFINE(PT_LCOUNT, offsetof (struct pt_regs, lcount));
DEFINE(PT_SAR, offsetof (struct pt_regs, sar));
+ DEFINE(PT_ICOUNTLEVEL, offsetof (struct pt_regs, icountlevel));
DEFINE(PT_SYSCALL, offsetof (struct pt_regs, syscall));
DEFINE(PT_AREG, offsetof (struct pt_regs, areg[0]));
DEFINE(PT_AREG0, offsetof (struct pt_regs, areg[0]));
diff --git a/arch/xtensa/kernel/entry.S b/arch/xtensa/kernel/entry.S
index 9e271ba009b..8dc7a2c26ff 100644
--- a/arch/xtensa/kernel/entry.S
+++ b/arch/xtensa/kernel/entry.S
@@ -125,8 +125,9 @@ _user_exception:
movi a2, 0
rsr a3, SAR
- wsr a2, ICOUNTLEVEL
+ xsr a2, ICOUNTLEVEL
s32i a3, a1, PT_SAR
+ s32i a2, a1, PT_ICOUNTLEVEL
/* Rotate ws so that the current windowbase is at bit0. */
/* Assume ws = xxwww1yyyy. Rotate ws right, so that a2 = yyyyxxwww1 */
@@ -276,8 +277,9 @@ _kernel_exception:
movi a2, 0
rsr a3, SAR
- wsr a2, ICOUNTLEVEL
+ xsr a2, ICOUNTLEVEL
s32i a3, a1, PT_SAR
+ s32i a2, a1, PT_ICOUNTLEVEL
/* Rotate ws so that the current windowbase is at bit0. */
/* Assume ws = xxwww1yyyy. Rotate ws right, so that a2 = yyyyxxwww1 */
@@ -330,14 +332,16 @@ _kernel_exception:
common_exception:
- /* Save EXCVADDR, DEBUGCAUSE, and PC, and clear LCOUNT */
+ /* Save some registers, disable loops and clear the syscall flag. */
rsr a2, DEBUGCAUSE
rsr a3, EPC_1
s32i a2, a1, PT_DEBUGCAUSE
s32i a3, a1, PT_PC
+ movi a2, -1
rsr a3, EXCVADDR
+ s32i a2, a1, PT_SYSCALL
movi a2, 0
s32i a3, a1, PT_EXCVADDR
xsr a2, LCOUNT
@@ -450,27 +454,8 @@ common_exception_return:
/* Restore the state of the task and return from the exception. */
-
- /* If we are returning from a user exception, and the process
- * to run next has PT_SINGLESTEP set, we want to setup
- * ICOUNT and ICOUNTLEVEL to step one instruction.
- * PT_SINGLESTEP is set by sys_ptrace (ptrace.c)
- */
-
4: /* a2 holds GET_CURRENT(a2,a1) */
- l32i a3, a2, TI_TASK
- l32i a3, a3, TASK_PTRACE
- bbci.l a3, PT_SINGLESTEP_BIT, 1f # jump if single-step flag is not set
-
- movi a3, -2 # PT_SINGLESTEP flag is set,
- movi a4, 1 # icountlevel of 1 means it won't
- wsr a3, ICOUNT # start counting until after rfe
- wsr a4, ICOUNTLEVEL # so setup icount & icountlevel.
- isync
-
-1:
-
#if XCHAL_EXTRA_SA_SIZE
/* For user exceptions, restore the extra state from the user's TCB. */
@@ -665,6 +650,13 @@ common_exception_exit:
wsr a3, LEND
wsr a2, LCOUNT
+ /* We control single stepping through the ICOUNTLEVEL register. */
+
+ l32i a2, a1, PT_ICOUNTLEVEL
+ movi a3, -2
+ wsr a2, ICOUNTLEVEL
+ wsr a3, ICOUNT
+
/* Check if it was double exception. */
l32i a0, a1, PT_DEPC
diff --git a/arch/xtensa/kernel/head.S b/arch/xtensa/kernel/head.S
index ea89910efa4..67e69139520 100644
--- a/arch/xtensa/kernel/head.S
+++ b/arch/xtensa/kernel/head.S
@@ -19,6 +19,8 @@
#include <asm/page.h>
#include <asm/cacheasm.h>
+#include <linux/linkage.h>
+
/*
* This module contains the entry code for kernel images. It performs the
* minimal setup needed to call the generic C routines.
@@ -227,13 +229,14 @@ _startup:
should_never_return:
j should_never_return
- /* Define some common data structures here. We define them
- * here in this assembly file due to their unusual alignment
- * requirements.
- */
- .comm swapper_pg_dir,PAGE_SIZE,PAGE_SIZE
- .comm empty_bad_page_table,PAGE_SIZE,PAGE_SIZE
- .comm empty_bad_page,PAGE_SIZE,PAGE_SIZE
- .comm empty_zero_page,PAGE_SIZE,PAGE_SIZE
+/*
+ * BSS section
+ */
+
+.section ".bss.page_aligned", "w"
+ENTRY(swapper_pg_dir)
+ .fill PAGE_SIZE, 1, 0
+ENTRY(empty_zero_page)
+ .fill PAGE_SIZE, 1, 0
diff --git a/arch/xtensa/kernel/pci.c b/arch/xtensa/kernel/pci.c
index 45571ccb72d..77deae5290f 100644
--- a/arch/xtensa/kernel/pci.c
+++ b/arch/xtensa/kernel/pci.c
@@ -401,7 +401,7 @@ int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
* Also, think for a moment about likes of floppy.c that
* include architecture specific parts. They may want to redefine ins/outs.
*
- * We do not use horroble macroses here because we want to
+ * We do not use horrible macros here because we want to
* advance pointer by sizeof(size).
*/
void outsb(unsigned long addr, const void *src, unsigned long count) {
diff --git a/arch/xtensa/kernel/setup.c b/arch/xtensa/kernel/setup.c
index 1ecf6716c32..2e8d398cf19 100644
--- a/arch/xtensa/kernel/setup.c
+++ b/arch/xtensa/kernel/setup.c
@@ -41,6 +41,7 @@
#include <asm/platform.h>
#include <asm/page.h>
#include <asm/setup.h>
+#include <asm/param.h>
#if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_DUMMY_CONSOLE)
struct screen_info screen_info = { 0, 24, 0, 0, 0, 80, 0, 0, 0, 24, 1, 16};
diff --git a/arch/xtensa/kernel/signal.c b/arch/xtensa/kernel/signal.c
index 58107672a61..033aae0336d 100644
--- a/arch/xtensa/kernel/signal.c
+++ b/arch/xtensa/kernel/signal.c
@@ -1,397 +1,239 @@
-// TODO coprocessor stuff
/*
- * linux/arch/xtensa/kernel/signal.c
+ * arch/xtensa/kernel/signal.c
*
- * Copyright (C) 1991, 1992 Linus Torvalds
- * 1997-11-28 Modified for POSIX.1b signals by Richard Henderson
- *
- * Joe Taylor <joe@tensilica.com>
- * Chris Zankel <chris@zankel.net>
+ * Default platform functions.
*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
*
+ * Copyright (C) 2005, 2006 Tensilica Inc.
+ * Copyright (C) 1991, 1992 Linus Torvalds
+ * 1997-11-28 Modified for POSIX.1b signals by Richard Henderson
*
+ * Chris Zankel <chris@zankel.net>
+ * Joe Taylor <joe@tensilica.com>
*/
-#include <asm/variant/core.h>
-#include <asm/coprocessor.h>
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <linux/smp.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/stddef.h>
#include <linux/personality.h>
+#include <linux/freezer.h>
+
#include <asm/ucontext.h>
#include <asm/uaccess.h>
-#include <asm/pgtable.h>
#include <asm/cacheflush.h>
+#include <asm/coprocessor.h>
+#include <asm/unistd.h>
#define DEBUG_SIG 0
#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
-asmlinkage long sys_wait4(pid_t pid,unsigned int * stat_addr, int options,
- struct rusage * ru);
asmlinkage int do_signal(struct pt_regs *regs, sigset_t *oldset);
extern struct task_struct *coproc_owners[];
+extern void release_all_cp (struct task_struct *);
-/*
- * Atomically swap in the new signal mask, and wait for a signal.
+struct rt_sigframe
+{
+ struct siginfo info;
+ struct ucontext uc;
+ cp_state_t cpstate;
+ unsigned char retcode[6];
+ unsigned int window[4];
+};
+
+/*
+ * Flush register windows stored in pt_regs to stack.
+ * Returns 1 for errors.
+ *
+ * Note that windowbase, windowstart, and wmask are not updated!
*/
-int xtensa_sigsuspend(struct pt_regs *regs)
+int
+flush_window_regs_user(struct pt_regs *regs)
{
- old_sigset_t mask = (old_sigset_t) regs->areg[3];
- sigset_t saveset;
+ const unsigned long ws = regs->windowstart;
+ const unsigned long wb = regs->windowbase;
+ unsigned long sp = 0;
+ unsigned long wm;
+ int err = 1;
+ int base;
- mask &= _BLOCKABLE;
- spin_lock_irq(&current->sighand->siglock);
- saveset = current->blocked;
- siginitset(&current->blocked, mask);
- recalc_sigpending();
- spin_unlock_irq(&current->sighand->siglock);
+ /* Return if no other frames. */
- regs->areg[2] = -EINTR;
- while (1) {
- current->state = TASK_INTERRUPTIBLE;
- schedule();
- if (do_signal(regs, &saveset))
- return -EINTR;
- }
-}
+ if (regs->wmask == 1)
+ return 0;
-asmlinkage int
-xtensa_rt_sigsuspend(struct pt_regs *regs)
-{
- sigset_t *unewset = (sigset_t *) regs->areg[4];
- size_t sigsetsize = (size_t) regs->areg[3];
- sigset_t saveset, newset;
- /* XXX: Don't preclude handling different sized sigset_t's. */
- if (sigsetsize != sizeof(sigset_t))
- return -EINVAL;
+ /* Rotate windowmask and skip empty frames. */
- if (copy_from_user(&newset, unewset, sizeof(newset)))
- return -EFAULT;
- sigdelsetmask(&newset, ~_BLOCKABLE);
- spin_lock_irq(&current->sighand->siglock);
- saveset = current->blocked;
- current->blocked = newset;
- recalc_sigpending();
- spin_unlock_irq(&current->sighand->siglock);
+ wm = (ws >> wb) | (ws << (XCHAL_NUM_AREGS / 4 - wb));
+ base = (XCHAL_NUM_AREGS / 4) - (regs->wmask >> 4);
+
+ /* For call8 or call12 frames, we need the previous stack pointer. */
- regs->areg[2] = -EINTR;
- while (1) {
- current->state = TASK_INTERRUPTIBLE;
- schedule();
- if (do_signal(regs, &saveset))
- return -EINTR;
- }
-}
+ if ((regs->wmask & 2) == 0)
+ if (__get_user(sp, (int*)(regs->areg[base * 4 + 1] - 12)))
+ goto errout;
-asmlinkage int
-xtensa_sigaction(int sig, const struct old_sigaction *act,
- struct old_sigaction *oact)
-{
- struct k_sigaction new_ka, old_ka;
- int ret;
+ /* Spill frames to stack. */
- if (act) {
- old_sigset_t mask;
- if (!access_ok(VERIFY_READ, act, sizeof(*act)) ||
- __get_user(new_ka.sa.sa_handler, &act->sa_handler) ||
- __get_user(new_ka.sa.sa_restorer, &act->sa_restorer))
- return -EFAULT;
- __get_user(new_ka.sa.sa_flags, &act->sa_flags);
- __get_user(mask, &act->sa_mask);
- siginitset(&new_ka.sa.sa_mask, mask);
- }
+ while (base < XCHAL_NUM_AREGS / 4) {
- ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
+ int m = (wm >> base);
+ int inc = 0;
- if (!ret && oact) {
- if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) ||
- __put_user(old_ka.sa.sa_handler, &oact->sa_handler) ||
- __put_user(old_ka.sa.sa_restorer, &oact->sa_restorer))
- return -EFAULT;
- __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
- __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
- }
+ /* Save registers a4..a7 (call8) or a4...a11 (call12) */
- return ret;
-}
+ if (m & 2) { /* call4 */
+ inc = 1;
-asmlinkage int
-xtensa_sigaltstack(struct pt_regs *regs)
-{
- const stack_t *uss = (stack_t *) regs->areg[4];
- stack_t *uoss = (stack_t *) regs->areg[3];
+ } else if (m & 4) { /* call8 */
+ if (copy_to_user((void*)(sp - 32),
+ &regs->areg[(base + 1) * 4], 16))
+ goto errout;
+ inc = 2;
- if (regs->depc > 64)
- panic ("Double exception sys_sigreturn\n");
+ } else if (m & 8) { /* call12 */
+ if (copy_to_user((void*)(sp - 48),
+ &regs->areg[(base + 1) * 4], 32))
+ goto errout;
+ inc = 3;
+ }
+ /* Save current frame a0..a3 under next SP */
- return do_sigaltstack(uss, uoss, regs->areg[1]);
-}
+ sp = regs->areg[((base + inc) * 4 + 1) % XCHAL_NUM_AREGS];
+ if (copy_to_user((void*)(sp - 16), &regs->areg[base * 4], 16))
+ goto errout;
+
+ /* Get current stack pointer for next loop iteration. */
+
+ sp = regs->areg[base * 4 + 1];
+ base += inc;
+ }
+
+ return 0;
+errout:
+ return err;
+}
/*
- * Do a signal return; undo the signal stack.
+ * Note: We don't copy double exception 'regs', we have to finish double exc.
+ * first before we return to signal handler! This dbl.exc.handler might cause
+ * another double exception, but I think we are fine as the situation is the
+ * same as if we had returned to the signal handerl and got an interrupt
+ * immediately...
*/
-struct sigframe
-{
- struct sigcontext sc;
- struct _cpstate cpstate;
- unsigned long extramask[_NSIG_WORDS-1];
- unsigned char retcode[6];
- unsigned int reserved[4]; /* Reserved area for chaining */
- unsigned int window[4]; /* Window of 4 registers for initial context */
-};
-
-struct rt_sigframe
+static int
+setup_sigcontext(struct sigcontext __user *sc, cp_state_t *cpstate,
+ struct pt_regs *regs, unsigned long mask)
{
- struct siginfo info;
- struct ucontext uc;
- struct _cpstate cpstate;
- unsigned char retcode[6];
- unsigned int reserved[4]; /* Reserved area for chaining */
- unsigned int window[4]; /* Window of 4 registers for initial context */
-};
+ int err = 0;
-extern void release_all_cp (struct task_struct *);
+#define COPY(x) err |= __put_user(regs->x, &sc->sc_##x)
+ COPY(pc);
+ COPY(ps);
+ COPY(lbeg);
+ COPY(lend);
+ COPY(lcount);
+ COPY(sar);
+#undef COPY
+ err |= flush_window_regs_user(regs);
+ err |= __copy_to_user (sc->sc_a, regs->areg, 16 * 4);
-// FIXME restore_cpextra
-static inline int
-restore_cpextra (struct _cpstate *buf)
-{
-#if 0
- /* The signal handler may have used coprocessors in which
- * case they are still enabled. We disable them to force a
- * reloading of the original task's CP state by the lazy
- * context-switching mechanisms of CP exception handling.
- * Also, we essentially discard any coprocessor state that the
- * signal handler created. */
+ // err |= __copy_to_user (sc->sc_a, regs->areg, XCHAL_NUM_AREGS * 4)
- struct task_struct *tsk = current;
- release_all_cp(tsk);
- return __copy_from_user(tsk->thread.cpextra, buf, XTENSA_CP_EXTRA_SIZE);
+#if XCHAL_HAVE_CP
+# error Coprocessors unsupported
+ err |= save_cpextra(cpstate);
+ err |= __put_user(err ? NULL : cpstate, &sc->sc_cpstate);
#endif
- return 0;
-}
-
-/* Note: We don't copy double exception 'tregs', we have to finish double exc. first before we return to signal handler! This dbl.exc.handler might cause another double exception, but I think we are fine as the situation is the same as if we had returned to the signal handerl and got an interrupt immediately...
- */
+ /* non-iBCS2 extensions.. */
+ err |= __put_user(mask, &sc->oldmask);
+ return err;
+}
static int
-restore_sigcontext(struct pt_regs *regs, struct sigcontext *sc)
+restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc)
{
- struct thread_struct *thread;
unsigned int err = 0;
unsigned long ps;
- struct _cpstate *buf;
#define COPY(x) err |= __get_user(regs->x, &sc->sc_##x)
COPY(pc);
- COPY(depc);
- COPY(wmask);
COPY(lbeg);
COPY(lend);
COPY(lcount);
COPY(sar);
- COPY(windowbase);
- COPY(windowstart);
#undef COPY
+ /* All registers were flushed to stack. Start with a prestine frame. */
+
+ regs->wmask = 1;
+ regs->windowbase = 0;
+ regs->windowstart = 1;
+
/* For PS, restore only PS.CALLINC.
* Assume that all other bits are either the same as for the signal
* handler, or the user mode value doesn't matter (e.g. PS.OWB).
*/
err |= __get_user(ps, &sc->sc_ps);
- regs->ps = (regs->ps & ~PS_CALLINC_MASK)
- | (ps & PS_CALLINC_MASK);
+ regs->ps = (regs->ps & ~PS_CALLINC_MASK) | (ps & PS_CALLINC_MASK);
/* Additional corruption checks */
- if ((regs->windowbase >= (XCHAL_NUM_AREGS/4))
- || ((regs->windowstart & ~((1<<(XCHAL_NUM_AREGS/4)) - 1)) != 0) )
- err = 1;
if ((regs->lcount > 0)
- && ((regs->lbeg > TASK_SIZE) || (regs->lend > TASK_SIZE)) )
+ && ((regs->lbeg > TASK_SIZE) || (regs->lend > TASK_SIZE)) )
err = 1;
- /* Restore extended register state.
- * See struct thread_struct in processor.h.
- */
- thread = &current->thread;
-
- err |= __copy_from_user (regs->areg, sc->sc_areg, XCHAL_NUM_AREGS*4);
- err |= __get_user(buf, &sc->sc_cpstate);
- if (buf) {
- if (!access_ok(VERIFY_READ, buf, sizeof(*buf)))
- goto badframe;
- err |= restore_cpextra(buf);
- }
-
- regs->syscall = -1; /* disable syscall checks */
- return err;
-
-badframe:
- return 1;
-}
-
-static inline void
-flush_my_cpstate(struct task_struct *tsk)
-{
- unsigned long flags;
- local_irq_save(flags);
-
-#if 0 // FIXME
- for (i = 0; i < XCHAL_CP_NUM; i++) {
- if (tsk == coproc_owners[i]) {
- xthal_validate_cp(i);
- xthal_save_cpregs(tsk->thread.cpregs_ptr[i], i);
+ err |= __copy_from_user(regs->areg, sc->sc_a, 16 * 4);
- /* Invalidate and "disown" the cp to allow
- * callers the chance to reset cp state in the
- * task_struct. */
+#if XCHAL_HAVE_CP
+# error Coprocessors unsupported
+ /* The signal handler may have used coprocessors in which
+ * case they are still enabled. We disable them to force a
+ * reloading of the original task's CP state by the lazy
+ * context-switching mechanisms of CP exception handling.
+ * Also, we essentially discard any coprocessor state that the
+ * signal handler created. */
- xthal_invalidate_cp(i);
- coproc_owners[i] = 0;
- }
+ if (!err) {
+ struct task_struct *tsk = current;
+ release_all_cp(tsk);
+ err |= __copy_from_user(tsk->thread.cpextra, sc->sc_cpstate,
+ XTENSA_CP_EXTRA_SIZE);
}
#endif
- local_irq_restore(flags);
-}
-
-/* Return codes:
- 0: nothing saved
- 1: stuff to save, successful
- -1: stuff to save, error happened
-*/
-static int
-save_cpextra (struct _cpstate *buf)
-{
-#if XCHAL_CP_NUM == 0
- return 0;
-#else
-
- /* FIXME: If a task has never used a coprocessor, there is
- * no need to save and restore anything. Tracking this
- * information would allow us to optimize this section.
- * Perhaps we can use current->used_math or (current->flags &
- * PF_USEDFPU) or define a new field in the thread
- * structure. */
-
- /* We flush any live, task-owned cp state to the task_struct,
- * then copy it all to the sigframe. Then we clear all
- * cp/extra state in the task_struct, effectively
- * clearing/resetting all cp/extra state for the signal
- * handler (cp-exception handling will load these new values
- * into the cp/extra registers.) This step is important for
- * things like a floating-point cp, where the OS must reset
- * the FCR to the default rounding mode. */
-
- int err = 0;
- struct task_struct *tsk = current;
-
- flush_my_cpstate(tsk);
- /* Note that we just copy everything: 'extra' and 'cp' state together.*/
- err |= __copy_to_user(buf, tsk->thread.cp_save, XTENSA_CP_EXTRA_SIZE);
- memset(tsk->thread.cp_save, 0, XTENSA_CP_EXTRA_SIZE);
-
-#if (XTENSA_CP_EXTRA_SIZE == 0)
-#error Sanity check on memset above, cpextra_size should not be zero.
-#endif
-
- return err ? -1 : 1;
-#endif
-}
-
-static int
-setup_sigcontext(struct sigcontext *sc, struct _cpstate *cpstate,
- struct pt_regs *regs, unsigned long mask)
-{
- struct thread_struct *thread;
- int err = 0;
-
-//printk("setup_sigcontext\n");
-#define COPY(x) err |= __put_user(regs->x, &sc->sc_##x)
- COPY(pc);
- COPY(ps);
- COPY(depc);
- COPY(wmask);
- COPY(lbeg);
- COPY(lend);
- COPY(lcount);
- COPY(sar);
- COPY(windowbase);
- COPY(windowstart);
-#undef COPY
-
- /* Save extended register state.
- * See struct thread_struct in processor.h.
- */
- thread = &current->thread;
- err |= __copy_to_user (sc->sc_areg, regs->areg, XCHAL_NUM_AREGS * 4);
- err |= save_cpextra(cpstate);
- err |= __put_user(err ? NULL : cpstate, &sc->sc_cpstate);
- /* non-iBCS2 extensions.. */
- err |= __put_user(mask, &sc->oldmask);
+ regs->syscall = -1; /* disable syscall checks */
return err;
}
-asmlinkage int xtensa_sigreturn(struct pt_regs *regs)
-{
- struct sigframe *frame = (struct sigframe *)regs->areg[1];
- sigset_t set;
- if (regs->depc > 64)
- panic ("Double exception sys_sigreturn\n");
-
- if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
- goto badframe;
-
- if (__get_user(set.sig[0], &frame->sc.oldmask)
- || (_NSIG_WORDS > 1
- && __copy_from_user(&set.sig[1], &frame->extramask,
- sizeof(frame->extramask))))
- goto badframe;
-
- sigdelsetmask(&set, ~_BLOCKABLE);
-
- spin_lock_irq(&current->sighand->siglock);
- current->blocked = set;
- recalc_sigpending();
- spin_unlock_irq(&current->sighand->siglock);
- if (restore_sigcontext(regs, &frame->sc))
- goto badframe;
- return regs->areg[2];
-badframe:
- force_sig(SIGSEGV, current);
- return 0;
-}
+/*
+ * Do a signal return; undo the signal stack.
+ */
-asmlinkage int xtensa_rt_sigreturn(struct pt_regs *regs)
+asmlinkage long xtensa_rt_sigreturn(long a0, long a1, long a2, long a3,
+ long a4, long a5, struct pt_regs *regs)
{
- struct rt_sigframe *frame = (struct rt_sigframe *)regs->areg[1];
+ struct rt_sigframe __user *frame;
sigset_t set;
- stack_t st;
int ret;
+
if (regs->depc > 64)
- {
- printk("!!!!!!! DEPC !!!!!!!\n");
- return 0;
- }
+ panic("rt_sigreturn in double exception!\n");
+
+ frame = (struct rt_sigframe __user *) regs->areg[1];
if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
goto badframe;
@@ -407,13 +249,11 @@ asmlinkage int xtensa_rt_sigreturn(struct pt_regs *regs)
if (restore_sigcontext(regs, &frame->uc.uc_mcontext))
goto badframe;
+
ret = regs->areg[2];
- if (__copy_from_user(&st, &frame->uc.uc_stack, sizeof(st)))
+ if (do_sigaltstack(&frame->uc.uc_stack, NULL, regs->areg[1]) == -EFAULT)
goto badframe;
- /* It is more difficult to avoid calling this function than to
- call it and ignore errors. */
- do_sigaltstack(&st, NULL, regs->areg[1]);
return ret;
@@ -422,77 +262,50 @@ badframe:
return 0;
}
-/*
- * Set up a signal frame.
- */
+
/*
- * Determine which stack to use..
+ * Set up a signal frame.
*/
-static inline void *
-get_sigframe(struct k_sigaction *ka, unsigned long sp, size_t frame_size)
-{
- if ((ka->sa.sa_flags & SA_ONSTACK) != 0 && ! sas_ss_flags(sp))
- sp = current->sas_ss_sp + current->sas_ss_size;
-
- return (void *)((sp - frame_size) & -16ul);
-}
-
-#define USE_SIGRETURN 0
-#define USE_RT_SIGRETURN 1
static int
-gen_return_code(unsigned char *codemem, unsigned int use_rt_sigreturn)
+gen_return_code(unsigned char *codemem)
{
- unsigned int retcall;
int err = 0;
-#if 0
- /* Ignoring SA_RESTORER for now; it's supposed to be obsolete,
- * and the xtensa glibc doesn't use it.
+ /*
+ * The 12-bit immediate is really split up within the 24-bit MOVI
+ * instruction. As long as the above system call numbers fit within
+ * 8-bits, the following code works fine. See the Xtensa ISA for
+ * details.
*/
- if (ka->sa.sa_flags & SA_RESTORER) {
- regs->pr = (unsigned long) ka->sa.sa_restorer;
- } else
-#endif /* 0 */
- {
-
-#if (__NR_sigreturn > 255) || (__NR_rt_sigreturn > 255)
-
-/* The 12-bit immediate is really split up within the 24-bit MOVI
- * instruction. As long as the above system call numbers fit within
- * 8-bits, the following code works fine. See the Xtensa ISA for
- * details.
- */
-#error Generating the MOVI instruction below breaks!
+#if __NR_rt_sigreturn > 255
+# error Generating the MOVI instruction below breaks!
#endif
- retcall = use_rt_sigreturn ? __NR_rt_sigreturn : __NR_sigreturn;
-
#ifdef __XTENSA_EB__ /* Big Endian version */
- /* Generate instruction: MOVI a2, retcall */
- err |= __put_user(0x22, &codemem[0]);
- err |= __put_user(0x0a, &codemem[1]);
- err |= __put_user(retcall, &codemem[2]);
- /* Generate instruction: SYSCALL */
- err |= __put_user(0x00, &codemem[3]);
- err |= __put_user(0x05, &codemem[4]);
- err |= __put_user(0x00, &codemem[5]);
+ /* Generate instruction: MOVI a2, __NR_rt_sigreturn */
+ err |= __put_user(0x22, &codemem[0]);
+ err |= __put_user(0x0a, &codemem[1]);
+ err |= __put_user(__NR_rt_sigreturn, &codemem[2]);
+ /* Generate instruction: SYSCALL */
+ err |= __put_user(0x00, &codemem[3]);
+ err |= __put_user(0x05, &codemem[4]);
+ err |= __put_user(0x00, &codemem[5]);
#elif defined __XTENSA_EL__ /* Little Endian version */
- /* Generate instruction: MOVI a2, retcall */
- err |= __put_user(0x22, &codemem[0]);
- err |= __put_user(0xa0, &codemem[1]);
- err |= __put_user(retcall, &codemem[2]);
- /* Generate instruction: SYSCALL */
- err |= __put_user(0x00, &codemem[3]);
- err |= __put_user(0x50, &codemem[4]);
- err |= __put_user(0x00, &codemem[5]);
+ /* Generate instruction: MOVI a2, __NR_rt_sigreturn */
+ err |= __put_user(0x22, &codemem[0]);
+ err |= __put_user(0xa0, &codemem[1]);
+ err |= __put_user(__NR_rt_sigreturn, &codemem[2]);
+ /* Generate instruction: SYSCALL */
+ err |= __put_user(0x00, &codemem[3]);
+ err |= __put_user(0x50, &codemem[4]);
+ err |= __put_user(0x00, &codemem[5]);
#else
-#error Must use compiler for Xtensa processors.
+# error Must use compiler for Xtensa processors.
#endif
- }
/* Flush generated code out of the data cache */
@@ -504,97 +317,29 @@ gen_return_code(unsigned char *codemem, unsigned int use_rt_sigreturn)
return err;
}
-static void
-set_thread_state(struct pt_regs *regs, void *stack, unsigned char *retaddr,
- void *handler, unsigned long arg1, void *arg2, void *arg3)
-{
- /* Set up registers for signal handler */
- start_thread(regs, (unsigned long) handler, (unsigned long) stack);
-
- /* Set up a stack frame for a call4
- * Note: PS.CALLINC is set to one by start_thread
- */
- regs->areg[4] = (((unsigned long) retaddr) & 0x3fffffff) | 0x40000000;
- regs->areg[6] = arg1;
- regs->areg[7] = (unsigned long) arg2;
- regs->areg[8] = (unsigned long) arg3;
-}
-static void setup_frame(int sig, struct k_sigaction *ka,
+static void setup_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
sigset_t *set, struct pt_regs *regs)
{
- struct sigframe *frame;
+ struct rt_sigframe *frame;
int err = 0;
int signal;
+ unsigned long sp, ra;
- frame = get_sigframe(ka, regs->areg[1], sizeof(*frame));
- if (regs->depc > 64)
- {
- printk("!!!!!!! DEPC !!!!!!!\n");
- return;
- }
-
-
- if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
- goto give_sigsegv;
-
- signal = current_thread_info()->exec_domain
- && current_thread_info()->exec_domain->signal_invmap
- && sig < 32
- ? current_thread_info()->exec_domain->signal_invmap[sig]
- : sig;
-
- err |= setup_sigcontext(&frame->sc, &frame->cpstate, regs, set->sig[0]);
+ sp = regs->areg[1];
- if (_NSIG_WORDS > 1) {
- err |= __copy_to_user(frame->extramask, &set->sig[1],
- sizeof(frame->extramask));
+ if ((ka->sa.sa_flags & SA_ONSTACK) != 0 && ! on_sig_stack(sp)) {
+ sp = current->sas_ss_sp + current->sas_ss_size;
}
- /* Create sys_sigreturn syscall in stack frame */
- err |= gen_return_code(frame->retcode, USE_SIGRETURN);
-
- if (err)
- goto give_sigsegv;
-
- /* Create signal handler execution context.
- * Return context not modified until this point.
- */
- set_thread_state(regs, frame, frame->retcode,
- ka->sa.sa_handler, signal, &frame->sc, NULL);
-
- /* Set access mode to USER_DS. Nomenclature is outdated, but
- * functionality is used in uaccess.h
- */
- set_fs(USER_DS);
-
-
-#if DEBUG_SIG
- printk("SIG deliver (%s:%d): signal=%d sp=%p pc=%08x\n",
- current->comm, current->pid, signal, frame, regs->pc);
-#endif
-
- return;
-
-give_sigsegv:
- if (sig == SIGSEGV)
- ka->sa.sa_handler = SIG_DFL;
- force_sig(SIGSEGV, current);
-}
-
-static void setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
- sigset_t *set, struct pt_regs *regs)
-{
- struct rt_sigframe *frame;
- int err = 0;
- int signal;
+ frame = (void *)((sp - sizeof(*frame)) & -16ul);
- frame = get_sigframe(ka, regs->areg[1], sizeof(*frame));
if (regs->depc > 64)
panic ("Double exception sys_sigreturn\n");
- if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
+ if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) {
goto give_sigsegv;
+ }
signal = current_thread_info()->exec_domain
&& current_thread_info()->exec_domain->signal_invmap
@@ -602,9 +347,12 @@ static void setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
? current_thread_info()->exec_domain->signal_invmap[sig]
: sig;
- err |= copy_siginfo_to_user(&frame->info, info);
+ if (ka->sa.sa_flags & SA_SIGINFO) {
+ err |= copy_siginfo_to_user(&frame->info, info);
+ }
+
+ /* Create the user context. */
- /* Create the ucontext. */
err |= __put_user(0, &frame->uc.uc_flags);
err |= __put_user(0, &frame->uc.uc_link);
err |= __put_user((void *)current->sas_ss_sp,
@@ -617,16 +365,31 @@ static void setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
/* Create sys_rt_sigreturn syscall in stack frame */
- err |= gen_return_code(frame->retcode, USE_RT_SIGRETURN);
- if (err)
+ err |= gen_return_code(frame->retcode);
+
+ if (err) {
goto give_sigsegv;
+ }
+
- /* Create signal handler execution context.
+ /*
+ * Create signal handler execution context.
* Return context not modified until this point.
*/
- set_thread_state(regs, frame, frame->retcode,
- ka->sa.sa_handler, signal, &frame->info, &frame->uc);
+
+ /* Set up registers for signal handler */
+ start_thread(regs, (unsigned long) ka->sa.sa_handler,
+ (unsigned long) frame);
+
+ /* Set up a stack frame for a call4
+ * Note: PS.CALLINC is set to one by start_thread
+ */
+ ra = (unsigned long) frame->retcode;
+ regs->areg[4] = (((unsigned long) ra) & 0x3fffffff) | 0x40000000;
+ regs->areg[6] = (unsigned long) signal;
+ regs->areg[7] = (unsigned long) &frame->info;
+ regs->areg[8] = (unsigned long) &frame->uc;
/* Set access mode to USER_DS. Nomenclature is outdated, but
* functionality is used in uaccess.h
@@ -646,6 +409,48 @@ give_sigsegv:
force_sig(SIGSEGV, current);
}
+/*
+ * Atomically swap in the new signal mask, and wait for a signal.
+ */
+
+asmlinkage long xtensa_rt_sigsuspend(sigset_t __user *unewset,
+ size_t sigsetsize,
+ long a2, long a3, long a4, long a5,
+ struct pt_regs *regs)
+{
+ sigset_t saveset, newset;
+
+ /* XXX: Don't preclude handling different sized sigset_t's. */
+ if (sigsetsize != sizeof(sigset_t))
+ return -EINVAL;
+
+ if (copy_from_user(&newset, unewset, sizeof(newset)))
+ return -EFAULT;
+
+ sigdelsetmask(&newset, ~_BLOCKABLE);
+ spin_lock_irq(&current->sighand->siglock);
+ saveset = current->blocked;
+ current->blocked = newset;
+ recalc_sigpending();
+ spin_unlock_irq(&current->sighand->siglock);
+
+ regs->areg[2] = -EINTR;
+ while (1) {
+ current->state = TASK_INTERRUPTIBLE;
+ schedule();
+ if (do_signal(regs, &saveset))
+ return -EINTR;
+ }
+}
+
+asmlinkage long xtensa_sigaltstack(const stack_t __user *uss,
+ stack_t __user *uoss,
+ long a2, long a3, long a4, long a5,
+ struct pt_regs *regs)
+{
+ return do_sigaltstack(uss, uoss, regs->areg[1]);
+}
+
/*
@@ -663,51 +468,89 @@ int do_signal(struct pt_regs *regs, sigset_t *oldset)
int signr;
struct k_sigaction ka;
+ if (!user_mode(regs))
+ return 0;
+
+ if (try_to_freeze())
+ goto no_signal;
+
if (!oldset)
oldset = &current->blocked;
+ task_pt_regs(current)->icountlevel = 0;
+
signr = get_signal_to_deliver(&info, &ka, regs, NULL);
- /* Are we from a system call? */
- if (regs->syscall >= 0) {
- /* If so, check system call restarting.. */
- switch (regs->areg[2]) {
- case ERESTARTNOHAND:
- case ERESTART_RESTARTBLOCK:
- regs->areg[2] = -EINTR;
- break;
+ if (signr > 0) {
+
+ /* Are we from a system call? */
+
+ if ((signed)regs->syscall >= 0) {
- case ERESTARTSYS:
- if (!(ka.sa.sa_flags & SA_RESTART)) {
+ /* If so, check system call restarting.. */
+
+ switch (regs->areg[2]) {
+ case -ERESTARTNOHAND:
+ case -ERESTART_RESTARTBLOCK:
regs->areg[2] = -EINTR;
break;
- }
- /* fallthrough */
- case ERESTARTNOINTR:
- regs->areg[2] = regs->syscall;
- regs->pc -= 3;
+
+ case -ERESTARTSYS:
+ if (!(ka.sa.sa_flags & SA_RESTART)) {
+ regs->areg[2] = -EINTR;
+ break;
+ }
+ /* fallthrough */
+ case -ERESTARTNOINTR:
+ regs->areg[2] = regs->syscall;
+ regs->pc -= 3;
+ break;
+
+ default:
+ /* nothing to do */
+ if (regs->areg[2] != 0)
+ break;
+ }
}
- }
- if (signr == 0)
- return 0; /* no signals delivered */
+ /* Whee! Actually deliver the signal. */
+ /* Set up the stack frame */
+ setup_frame(signr, &ka, &info, oldset, regs);
- /* Whee! Actually deliver the signal. */
+ if (ka.sa.sa_flags & SA_ONESHOT)
+ ka.sa.sa_handler = SIG_DFL;
- /* Set up the stack frame */
- if (ka.sa.sa_flags & SA_SIGINFO)
- setup_rt_frame(signr, &ka, &info, oldset, regs);
- else
- setup_frame(signr, &ka, oldset, regs);
+ spin_lock_irq(&current->sighand->siglock);
+ sigorsets(&current->blocked, &current->blocked, &ka.sa.sa_mask);
+ if (!(ka.sa.sa_flags & SA_NODEFER))
+ sigaddset(&current->blocked, signr);
+ recalc_sigpending();
+ spin_unlock_irq(&current->sighand->siglock);
+ if (current->ptrace & PT_SINGLESTEP)
+ task_pt_regs(current)->icountlevel = 1;
- if (ka.sa.sa_flags & SA_ONESHOT)
- ka.sa.sa_handler = SIG_DFL;
+ return 1;
+ }
- spin_lock_irq(&current->sighand->siglock);
- sigorsets(&current->blocked, &current->blocked, &ka.sa.sa_mask);
- if (!(ka.sa.sa_flags & SA_NODEFER))
- sigaddset(&current->blocked, signr);
- recalc_sigpending();
- spin_unlock_irq(&current->sighand->siglock);
- return 1;
+no_signal:
+ /* Did we come from a system call? */
+ if ((signed) regs->syscall >= 0) {
+ /* Restart the system call - no handlers present */
+ switch (regs->areg[2]) {
+ case -ERESTARTNOHAND:
+ case -ERESTARTSYS:
+ case -ERESTARTNOINTR:
+ regs->areg[2] = regs->syscall;
+ regs->pc -= 3;
+ break;
+ case -ERESTART_RESTARTBLOCK:
+ regs->areg[2] = __NR_restart_syscall;
+ regs->pc -= 3;
+ break;
+ }
+ }
+ if (current->ptrace & PT_SINGLESTEP)
+ task_pt_regs(current)->icountlevel = 1;
+ return 0;
}
+
diff --git a/arch/xtensa/kernel/vmlinux.lds.S b/arch/xtensa/kernel/vmlinux.lds.S
index 4b7b4ff7997..b0582c3c5f8 100644
--- a/arch/xtensa/kernel/vmlinux.lds.S
+++ b/arch/xtensa/kernel/vmlinux.lds.S
@@ -84,9 +84,7 @@ SECTIONS
{
/* The .head.text section must be the first section! */
*(.head.text)
- *(.literal)
- TEXT_TEXT
- *(.srom.text)
+ *(.literal .text)
VMLINUX_SYMBOL(__sched_text_start) = .;
*(.sched.literal .sched.text)
VMLINUX_SYMBOL(__sched_text_end) = .;
@@ -96,6 +94,7 @@ SECTIONS
}
_etext = .;
+ PROVIDE (etext = .);
. = ALIGN(16);
@@ -103,32 +102,6 @@ SECTIONS
/* Relocation table */
- . = ALIGN(16);
- __boot_reloc_table_start = ABSOLUTE(.);
-
- __relocate : {
-
- RELOCATE_ENTRY(_WindowVectors_text,
- .WindowVectors.text);
-#if 0
- RELOCATE_ENTRY(_KernelExceptionVector_literal,
- .KernelExceptionVector.literal);
-#endif
- RELOCATE_ENTRY(_KernelExceptionVector_text,
- .KernelExceptionVector.text);
-#if 0
- RELOCATE_ENTRY(_UserExceptionVector_literal,
- .UserExceptionVector.literal);
-#endif
- RELOCATE_ENTRY(_UserExceptionVector_text,
- .UserExceptionVector.text);
- RELOCATE_ENTRY(_DoubleExceptionVector_literal,
- .DoubleExceptionVector.literal);
- RELOCATE_ENTRY(_DoubleExceptionVector_text,
- .DoubleExceptionVector.text);
- }
- __boot_reloc_table_end = ABSOLUTE(.) ;
-
.fixup : { *(.fixup) }
. = ALIGN(16);
@@ -145,8 +118,7 @@ SECTIONS
_fdata = .;
.data :
{
- DATA_DATA
- CONSTRUCTORS
+ *(.data) CONSTRUCTORS
. = ALIGN(XCHAL_ICACHE_LINESIZE);
*(.data.cacheline_aligned)
}
@@ -174,6 +146,22 @@ SECTIONS
__tagtable_begin = .;
*(.taglist)
__tagtable_end = .;
+
+ . = ALIGN(16);
+ __boot_reloc_table_start = ABSOLUTE(.);
+
+ RELOCATE_ENTRY(_WindowVectors_text,
+ .WindowVectors.text);
+ RELOCATE_ENTRY(_KernelExceptionVector_text,
+ .KernelExceptionVector.text);
+ RELOCATE_ENTRY(_UserExceptionVector_text,
+ .UserExceptionVector.text);
+ RELOCATE_ENTRY(_DoubleExceptionVector_literal,
+ .DoubleExceptionVector.literal);
+ RELOCATE_ENTRY(_DoubleExceptionVector_text,
+ .DoubleExceptionVector.text);
+
+ __boot_reloc_table_end = ABSOLUTE(.) ;
}
. = ALIGN(XCHAL_ICACHE_LINESIZE);
@@ -194,16 +182,6 @@ SECTIONS
SECURITY_INIT
- . = ALIGN(4);
-
- __start___ftr_fixup = .;
- __ftr_fixup : { *(__ftr_fixup) }
- __stop___ftr_fixup = .;
-
- . = ALIGN(4096);
- __per_cpu_start = .;
- .data.percpu : { *(.data.percpu) }
- __per_cpu_end = .;
#ifdef CONFIG_BLK_DEV_INITRD
. = ALIGN(4096);
@@ -212,6 +190,12 @@ SECTIONS
__initramfs_end = .;
#endif
+ . = ALIGN(4096);
+ __per_cpu_start = .;
+ .data.percpu : { *(.data.percpu) }
+ __per_cpu_end = .;
+
+
/* We need this dummy segment here */
. = ALIGN(4);
@@ -273,9 +257,9 @@ SECTIONS
/* BSS section */
_bss_start = .;
- .sbss : { *(.sbss) *(.scommon) }
- .bss : { *(COMMON) *(.bss) }
+ .bss : { *(.bss.page_aligned) *(.bss) }
_bss_end = .;
+
_end = .;
/* only used by the boot loader */
@@ -293,16 +277,16 @@ SECTIONS
*(.ResetVector.text)
}
-
/* Sections to be discarded */
/DISCARD/ :
{
- *(.text.exit)
- *(.text.exit.literal)
- *(.data.exit)
+ *(.exit.literal .exit.text)
+ *(.exit.data)
*(.exitcall.exit)
}
+ .xt.lit : { *(.xt.lit) }
+ .xt.prop : { *(.xt.prop) }
.debug 0 : { *(.debug) }
.line 0 : { *(.line) }
diff --git a/arch/xtensa/kernel/xtensa_ksyms.c b/arch/xtensa/kernel/xtensa_ksyms.c
index cd7e6a02060..60dbdb43fb4 100644
--- a/arch/xtensa/kernel/xtensa_ksyms.c
+++ b/arch/xtensa/kernel/xtensa_ksyms.c
@@ -38,21 +38,10 @@
/*
* String functions
*/
-EXPORT_SYMBOL(memcmp);
EXPORT_SYMBOL(memset);
EXPORT_SYMBOL(memcpy);
EXPORT_SYMBOL(memmove);
-EXPORT_SYMBOL(memchr);
-EXPORT_SYMBOL(strcat);
-EXPORT_SYMBOL(strchr);
-EXPORT_SYMBOL(strlen);
-EXPORT_SYMBOL(strncat);
-EXPORT_SYMBOL(strnlen);
-EXPORT_SYMBOL(strrchr);
-EXPORT_SYMBOL(strstr);
-EXPORT_SYMBOL(enable_irq);
-EXPORT_SYMBOL(disable_irq);
EXPORT_SYMBOL(kernel_thread);
/*
diff --git a/arch/xtensa/lib/strncpy_user.S b/arch/xtensa/lib/strncpy_user.S
index a834057bda6..b2655d94558 100644
--- a/arch/xtensa/lib/strncpy_user.S
+++ b/arch/xtensa/lib/strncpy_user.S
@@ -25,18 +25,18 @@
/*
* char *__strncpy_user(char *dst, const char *src, size_t len)
*/
-.text
-.begin literal
-.align 4
-.Lmask0:
- .byte 0xff, 0x00, 0x00, 0x00
-.Lmask1:
- .byte 0x00, 0xff, 0x00, 0x00
-.Lmask2:
- .byte 0x00, 0x00, 0xff, 0x00
-.Lmask3:
- .byte 0x00, 0x00, 0x00, 0xff
-.end literal
+
+#ifdef __XTENSA_EB__
+# define MASK0 0xff000000
+# define MASK1 0x00ff0000
+# define MASK2 0x0000ff00
+# define MASK3 0x000000ff
+#else
+# define MASK0 0x000000ff
+# define MASK1 0x0000ff00
+# define MASK2 0x00ff0000
+# define MASK3 0xff000000
+#endif
# Register use
# a0/ return address
@@ -53,6 +53,7 @@
# a11/ dst
# a12/ tmp
+.text
.align 4
.global __strncpy_user
.type __strncpy_user,@function
@@ -61,10 +62,10 @@ __strncpy_user:
# a2/ dst, a3/ src, a4/ len
mov a11, a2 # leave dst in return value register
beqz a4, .Lret # if len is zero
- l32r a5, .Lmask0 # mask for byte 0
- l32r a6, .Lmask1 # mask for byte 1
- l32r a7, .Lmask2 # mask for byte 2
- l32r a8, .Lmask3 # mask for byte 3
+ movi a5, MASK0 # mask for byte 0
+ movi a6, MASK1 # mask for byte 1
+ movi a7, MASK2 # mask for byte 2
+ movi a8, MASK3 # mask for byte 3
bbsi.l a3, 0, .Lsrc1mod2 # if only 8-bit aligned
bbsi.l a3, 1, .Lsrc2mod4 # if only 16-bit aligned
.Lsrcaligned: # return here when src is word-aligned
diff --git a/arch/xtensa/lib/strnlen_user.S b/arch/xtensa/lib/strnlen_user.S
index 5e9c1e709b2..ad3f616322c 100644
--- a/arch/xtensa/lib/strnlen_user.S
+++ b/arch/xtensa/lib/strnlen_user.S
@@ -24,18 +24,18 @@
/*
* size_t __strnlen_user(const char *s, size_t len)
*/
-.text
-.begin literal
-.align 4
-.Lmask0:
- .byte 0xff, 0x00, 0x00, 0x00
-.Lmask1:
- .byte 0x00, 0xff, 0x00, 0x00
-.Lmask2:
- .byte 0x00, 0x00, 0xff, 0x00
-.Lmask3:
- .byte 0x00, 0x00, 0x00, 0xff
-.end literal
+
+#ifdef __XTENSA_EB__
+# define MASK0 0xff000000
+# define MASK1 0x00ff0000
+# define MASK2 0x0000ff00
+# define MASK3 0x000000ff
+#else
+# define MASK0 0x000000ff
+# define MASK1 0x0000ff00
+# define MASK2 0x00ff0000
+# define MASK3 0xff000000
+#endif
# Register use:
# a2/ src
@@ -48,6 +48,7 @@
# a9/ tmp
# a10/ tmp
+.text
.align 4
.global __strnlen_user
.type __strnlen_user,@function
@@ -56,10 +57,10 @@ __strnlen_user:
# a2/ s, a3/ len
addi a4, a2, -4 # because we overincrement at the end;
# we compensate with load offsets of 4
- l32r a5, .Lmask0 # mask for byte 0
- l32r a6, .Lmask1 # mask for byte 1
- l32r a7, .Lmask2 # mask for byte 2
- l32r a8, .Lmask3 # mask for byte 3
+ movi a5, MASK0 # mask for byte 0
+ movi a6, MASK1 # mask for byte 1
+ movi a7, MASK2 # mask for byte 2
+ movi a8, MASK3 # mask for byte 3
bbsi.l a2, 0, .L1mod2 # if only 8-bit aligned
bbsi.l a2, 1, .L2mod4 # if only 16-bit aligned
diff --git a/arch/xtensa/mm/init.c b/arch/xtensa/mm/init.c
index e1ec2d1e818..8415c76f11c 100644
--- a/arch/xtensa/mm/init.c
+++ b/arch/xtensa/mm/init.c
@@ -205,7 +205,7 @@ void __init init_mmu (void)
/* Writing zeros to the <t>TLBCFG special registers ensure
* that valid values exist in the register. For existing
* PGSZID<w> fields, zero selects the first element of the
- * page-size array. For nonexistant PGSZID<w> fields, zero is
+ * page-size array. For nonexistent PGSZID<w> fields, zero is
* the best value to write. Also, when changing PGSZID<w>
* fields, the corresponding TLB must be flushed.
*/
diff --git a/arch/xtensa/platform-iss/network.c b/arch/xtensa/platform-iss/network.c
index 4bfe333be22..f09962fa98c 100644
--- a/arch/xtensa/platform-iss/network.c
+++ b/arch/xtensa/platform-iss/network.c
@@ -473,7 +473,7 @@ static int iss_net_open(struct net_device *dev)
netif_start_queue(dev);
/* clear buffer - it can happen that the host side of the interface
- * is full when we gethere. In this case, new data is never queued,
+ * is full when we get here. In this case, new data is never queued,
* SIGIOs never arrive, and the net never works.
*/
while ((err = iss_net_rx(dev)) > 0)
diff --git a/include/asm-xtensa/bitops.h b/include/asm-xtensa/bitops.h
index d815649617a..1c1e0d933ee 100644
--- a/include/asm-xtensa/bitops.h
+++ b/include/asm-xtensa/bitops.h
@@ -7,7 +7,7 @@
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
- * Copyright (C) 2001 - 2005 Tensilica Inc.
+ * Copyright (C) 2001 - 2007 Tensilica Inc.
*/
#ifndef _XTENSA_BITOPS_H
@@ -31,53 +31,30 @@
#if XCHAL_HAVE_NSA
-static __inline__ int __cntlz (unsigned long x)
+static inline unsigned long __cntlz (unsigned long x)
{
int lz;
asm ("nsau %0, %1" : "=r" (lz) : "r" (x));
- return 31 - lz;
+ return lz;
}
-#else
-
-static __inline__ int __cntlz (unsigned long x)
-{
- unsigned long sum, x1, x2, x4, x8, x16;
- x1 = x & 0xAAAAAAAA;
- x2 = x & 0xCCCCCCCC;
- x4 = x & 0xF0F0F0F0;
- x8 = x & 0xFF00FF00;
- x16 = x & 0xFFFF0000;
- sum = x2 ? 2 : 0;
- sum += (x16 != 0) * 16;
- sum += (x8 != 0) * 8;
- sum += (x4 != 0) * 4;
- sum += (x1 != 0);
-
- return sum;
-}
-
-#endif
-
/*
* ffz: Find first zero in word. Undefined if no zero exists.
* bit 0 is the LSB of addr; bit 32 is the LSB of (addr+1).
*/
-static __inline__ int ffz(unsigned long x)
+static inline int ffz(unsigned long x)
{
- if ((x = ~x) == 0)
- return 32;
- return __cntlz(x & -x);
+ return 31 - __cntlz(~x & -~x);
}
/*
* __ffs: Find first bit set in word. Return 0 for bit 0
*/
-static __inline__ int __ffs(unsigned long x)
+static inline int __ffs(unsigned long x)
{
- return __cntlz(x & -x);
+ return 31 - __cntlz(x & -x);
}
/*
@@ -86,9 +63,9 @@ static __inline__ int __ffs(unsigned long x)
* differs in spirit from the above ffz (man ffs).
*/
-static __inline__ int ffs(unsigned long x)
+static inline int ffs(unsigned long x)
{
- return __cntlz(x & -x) + 1;
+ return 32 - __cntlz(x & -x);
}
/*
@@ -96,20 +73,36 @@ static __inline__ int ffs(unsigned long x)
* Note fls(0) = 0, fls(1) = 1, fls(0x80000000) = 32.
*/
-static __inline__ int fls (unsigned int x)
+static inline int fls (unsigned int x)
{
- return __cntlz(x);
+ return 32 - __cntlz(x);
}
+
+#else
+
+/* Use the generic implementation if we don't have the nsa/nsau instructions. */
+
+# include <asm-generic/bitops/ffs.h>
+# include <asm-generic/bitops/__ffs.h>
+# include <asm-generic/bitops/ffz.h>
+# include <asm-generic/bitops/fls.h>
+
+#endif
+
#include <asm-generic/bitops/fls64.h>
#include <asm-generic/bitops/find.h>
#include <asm-generic/bitops/ext2-non-atomic.h>
#ifdef __XTENSA_EL__
-# define ext2_set_bit_atomic(lock,nr,addr) test_and_set_bit((nr),(addr))
-# define ext2_clear_bit_atomic(lock,nr,addr) test_and_clear_bit((nr),(addr))
+# define ext2_set_bit_atomic(lock,nr,addr) \
+ test_and_set_bit((nr), (unsigned long*)(addr))
+# define ext2_clear_bit_atomic(lock,nr,addr) \
+ test_and_clear_bit((nr), (unsigned long*)(addr))
#elif defined(__XTENSA_EB__)
-# define ext2_set_bit_atomic(lock,nr,addr) test_and_set_bit((nr) ^ 0x18, (addr))
-# define ext2_clear_bit_atomic(lock,nr,addr) test_and_clear_bit((nr)^0x18,(addr))
+# define ext2_set_bit_atomic(lock,nr,addr) \
+ test_and_set_bit((nr) ^ 0x18, (unsigned long*)(addr))
+# define ext2_clear_bit_atomic(lock,nr,addr) \
+ test_and_clear_bit((nr) ^ 0x18, (unsigned long*)(addr))
#else
# error processor byte order undefined!
#endif
diff --git a/include/asm-xtensa/byteorder.h b/include/asm-xtensa/byteorder.h
index 0f540a5f4c0..765edf17a9a 100644
--- a/include/asm-xtensa/byteorder.h
+++ b/include/asm-xtensa/byteorder.h
@@ -12,6 +12,7 @@
#define _XTENSA_BYTEORDER_H
#include <asm/types.h>
+#include <linux/compiler.h>
static __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 x)
{
@@ -78,4 +79,4 @@ static __inline__ __attribute_const__ __u16 ___arch__swab16(__u16 x)
# error processor byte order undefined!
#endif
-#endif /* __ASM_XTENSA_BYTEORDER_H */
+#endif /* _XTENSA_BYTEORDER_H */
diff --git a/include/asm-xtensa/coprocessor.h b/include/asm-xtensa/coprocessor.h
index bd09ec02d57..aa212103455 100644
--- a/include/asm-xtensa/coprocessor.h
+++ b/include/asm-xtensa/coprocessor.h
@@ -64,6 +64,7 @@ typedef struct {
# define COPROCESSOR_INFO_SIZE 8
# endif
#endif
+#endif /* XCHAL_HAVE_CP */
#ifndef __ASSEMBLY__
@@ -74,8 +75,11 @@ extern void save_coprocessor_registers(void*, int);
# else
# define release_coprocessors(task)
# endif
-#endif
-#endif
+typedef unsigned char cp_state_t[XTENSA_CP_EXTRA_SIZE]
+ __attribute__ ((aligned (XTENSA_CP_EXTRA_ALIGN)));
+
+#endif /* !__ASSEMBLY__ */
+
#endif /* _XTENSA_COPROCESSOR_H */
diff --git a/include/asm-xtensa/div64.h b/include/asm-xtensa/div64.h
index 20965e3af1d..f35678cb0a9 100644
--- a/include/asm-xtensa/div64.h
+++ b/include/asm-xtensa/div64.h
@@ -5,21 +5,12 @@
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
- * Copyright (C) 2001 - 2005 Tensilica Inc.
+ * Copyright (C) 2001 - 2007 Tensilica Inc.
*/
#ifndef _XTENSA_DIV64_H
#define _XTENSA_DIV64_H
-#include <linux/types.h>
+#include <asm-generic/div64.h>
-#define do_div(n,base) ({ \
- int __res = n % ((unsigned int) base); \
- n /= (unsigned int) base; \
- __res; })
-
-static inline uint64_t div64_64(uint64_t dividend, uint64_t divisor)
-{
- return dividend / divisor;
-}
-#endif
+#endif /* _XTENSA_DIV64_H */
diff --git a/include/asm-xtensa/elf.h b/include/asm-xtensa/elf.h
index f0f9fd8560a..1569b53cec9 100644
--- a/include/asm-xtensa/elf.h
+++ b/include/asm-xtensa/elf.h
@@ -13,7 +13,6 @@
#ifndef _XTENSA_ELF_H
#define _XTENSA_ELF_H
-#include <asm/variant/core.h>
#include <asm/ptrace.h>
/* Xtensa processor ELF architecture-magic number */
@@ -49,7 +48,7 @@ typedef struct {
elf_greg_t lcount;
elf_greg_t sar;
elf_greg_t syscall;
- elf_greg_t ar[XCHAL_NUM_AREGS];
+ elf_greg_t ar[64];
} xtensa_gregset_t;
#define ELF_NGREG (sizeof(xtensa_gregset_t) / sizeof(elf_greg_t))
diff --git a/include/asm-xtensa/fcntl.h b/include/asm-xtensa/fcntl.h
index 0609fc691b7..46ab12db573 100644
--- a/include/asm-xtensa/fcntl.h
+++ b/include/asm-xtensa/fcntl.h
@@ -1,99 +1 @@
-/*
- * include/asm-xtensa/fcntl.h
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 1995, 1996, 1997, 1998 by Ralf Baechle
- * Copyright (C) 2001 - 2005 Tensilica Inc.
- */
-
-#ifndef _XTENSA_FCNTL_H
-#define _XTENSA_FCNTL_H
-
-/* open/fcntl - O_SYNC is only implemented on blocks devices and on files
- located on an ext2 file system */
-#define O_ACCMODE 0003
-#define O_RDONLY 00
-#define O_WRONLY 01
-#define O_RDWR 02
-#define O_CREAT 0100 /* not fcntl */
-#define O_EXCL 0200 /* not fcntl */
-#define O_NOCTTY 0400 /* not fcntl */
-#define O_TRUNC 01000 /* not fcntl */
-#define O_APPEND 02000
-#define O_NONBLOCK 04000
-#define O_NDELAY O_NONBLOCK
-#define O_SYNC 010000
-#define FASYNC 020000 /* fcntl, for BSD compatibility */
-#define O_DIRECT 040000 /* direct disk access hint */
-#define O_LARGEFILE 0100000
-#define O_DIRECTORY 0200000 /* must be a directory */
-#define O_NOFOLLOW 0400000 /* don't follow links */
-#define O_NOATIME 01000000
-
-#define F_DUPFD 0 /* dup */
-#define F_GETFD 1 /* get close_on_exec */
-#define F_SETFD 2 /* set/clear close_on_exec */
-#define F_GETFL 3 /* get file->f_flags */
-#define F_SETFL 4 /* set file->f_flags */
-#define F_GETLK 5
-#define F_SETLK 6
-#define F_SETLKW 7
-
-#define F_SETOWN 8 /* for sockets. */
-#define F_GETOWN 9 /* for sockets. */
-#define F_SETSIG 10 /* for sockets. */
-#define F_GETSIG 11 /* for sockets. */
-
-#define F_GETLK64 12 /* using 'struct flock64' */
-#define F_SETLK64 13
-#define F_SETLKW64 14
-
-/* for F_[GET|SET]FL */
-#define FD_CLOEXEC 1 /* actually anything with low bit set goes */
-
-/* for posix fcntl() and lockf() */
-#define F_RDLCK 0
-#define F_WRLCK 1
-#define F_UNLCK 2
-
-/* for old implementation of bsd flock () */
-#define F_EXLCK 4 /* or 3 */
-#define F_SHLCK 8 /* or 4 */
-
-/* for leases */
-#define F_INPROGRESS 16
-
-/* operations for bsd flock(), also used by the kernel implementation */
-#define LOCK_SH 1 /* shared lock */
-#define LOCK_EX 2 /* exclusive lock */
-#define LOCK_NB 4 /* or'd with one of the above to prevent
- blocking */
-#define LOCK_UN 8 /* remove lock */
-
-#define LOCK_MAND 32 /* This is a mandatory flock */
-#define LOCK_READ 64 /* ... Which allows concurrent read operations */
-#define LOCK_WRITE 128 /* ... Which allows concurrent write operations */
-#define LOCK_RW 192 /* ... Which allows concurrent read & write ops */
-
-struct flock {
- short l_type;
- short l_whence;
- off_t l_start;
- off_t l_len;
- pid_t l_pid;
-};
-
-struct flock64 {
- short l_type;
- short l_whence;
- loff_t l_start;
- loff_t l_len;
- pid_t l_pid;
-};
-
-#define F_LINUX_SPECIFIC_BASE 1024
-
-#endif /* _XTENSA_FCNTL_H */
+#include <asm-generic/fcntl.h>
diff --git a/include/asm-xtensa/mmu_context.h b/include/asm-xtensa/mmu_context.h
index 92f948392eb..c0fd8e5b451 100644
--- a/include/asm-xtensa/mmu_context.h
+++ b/include/asm-xtensa/mmu_context.h
@@ -14,6 +14,7 @@
#define _XTENSA_MMU_CONTEXT_H
#include <linux/stringify.h>
+#include <linux/sched.h>
#include <asm/pgtable.h>
#include <asm/cacheflush.h>
diff --git a/include/asm-xtensa/page.h b/include/asm-xtensa/page.h
index c631d006194..1213cde7543 100644
--- a/include/asm-xtensa/page.h
+++ b/include/asm-xtensa/page.h
@@ -131,6 +131,6 @@ void copy_user_page(void *to,void* from,unsigned long vaddr,struct page* page);
#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
-#endif /* __KERNEL__ */
#include <asm-generic/memory_model.h>
+#endif /* __KERNEL__ */
#endif /* _XTENSA_PAGE_H */
diff --git a/include/asm-xtensa/param.h b/include/asm-xtensa/param.h
index 6f281392e3f..ce3a336cad0 100644
--- a/include/asm-xtensa/param.h
+++ b/include/asm-xtensa/param.h
@@ -11,15 +11,13 @@
#ifndef _XTENSA_PARAM_H
#define _XTENSA_PARAM_H
-#include <asm/variant/core.h>
-
#ifdef __KERNEL__
# define HZ 100 /* internal timer frequency */
# define USER_HZ 100 /* for user interfaces in "ticks" */
# define CLOCKS_PER_SEC (USER_HZ) /* frequnzy at which times() counts */
#endif
-#define EXEC_PAGESIZE (1 << XCHAL_MMU_MIN_PTE_PAGE_SIZE)
+#define EXEC_PAGESIZE 4096
#ifndef NGROUPS
#define NGROUPS 32
diff --git a/include/asm-xtensa/ptrace.h b/include/asm-xtensa/ptrace.h
index 1b7fe363fad..77ff02d307b 100644
--- a/include/asm-xtensa/ptrace.h
+++ b/include/asm-xtensa/ptrace.h
@@ -11,8 +11,6 @@
#ifndef _XTENSA_PTRACE_H
#define _XTENSA_PTRACE_H
-#include <asm/variant/core.h>
-
/*
* Kernel stack
*
@@ -101,7 +99,8 @@ struct pt_regs {
unsigned long windowbase; /* 48 */
unsigned long windowstart; /* 52 */
unsigned long syscall; /* 56 */
- int reserved[2]; /* 64 */
+ unsigned long icountlevel; /* 60 */
+ int reserved[1]; /* 64 */
/* Make sure the areg field is 16 bytes aligned. */
int align[0] __attribute__ ((aligned(16)));
@@ -113,6 +112,9 @@ struct pt_regs {
};
#ifdef __KERNEL__
+
+#include <asm/variant/core.h>
+
# define task_pt_regs(tsk) ((struct pt_regs*) \
(task_stack_page(tsk) + KERNEL_STACK_SIZE - (XCHAL_NUM_AREGS-16)*4) - 1)
# define user_mode(regs) (((regs)->ps & 0x00000020)!=0)
diff --git a/include/asm-xtensa/shmparam.h b/include/asm-xtensa/shmparam.h
index d3b65bfa71c..c8cc16c3da9 100644
--- a/include/asm-xtensa/shmparam.h
+++ b/include/asm-xtensa/shmparam.h
@@ -9,8 +9,6 @@
#ifndef _XTENSA_SHMPARAM_H
#define _XTENSA_SHMPARAM_H
-#include <asm/processor.h>
-
/*
* Xtensa can have variable size caches, and if
* the size of single way is larger than the page size,
diff --git a/include/asm-xtensa/sigcontext.h b/include/asm-xtensa/sigcontext.h
index a7517729141..e3381cee505 100644
--- a/include/asm-xtensa/sigcontext.h
+++ b/include/asm-xtensa/sigcontext.h
@@ -5,21 +5,12 @@
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
- * Copyright (C) 2001 - 2003 Tensilica Inc.
+ * Copyright (C) 2001 - 2007 Tensilica Inc.
*/
#ifndef _XTENSA_SIGCONTEXT_H
#define _XTENSA_SIGCONTEXT_H
-#define _ASMLANGUAGE
-#include <asm/processor.h>
-#include <asm/coprocessor.h>
-
-
-struct _cpstate {
- unsigned char _cpstate[XTENSA_CP_EXTRA_SIZE];
-} __attribute__ ((aligned (XTENSA_CP_EXTRA_ALIGN)));
-
struct sigcontext {
unsigned long oldmask;
@@ -27,18 +18,13 @@ struct sigcontext {
/* CPU registers */
unsigned long sc_pc;
unsigned long sc_ps;
- unsigned long sc_wmask;
- unsigned long sc_windowbase;
- unsigned long sc_windowstart;
unsigned long sc_lbeg;
unsigned long sc_lend;
unsigned long sc_lcount;
unsigned long sc_sar;
- unsigned long sc_depc;
- unsigned long sc_dareg0;
- unsigned long sc_treg[4];
- unsigned long sc_areg[XCHAL_NUM_AREGS];
- struct _cpstate *sc_cpstate;
+ unsigned long sc_acclo;
+ unsigned long sc_acchi;
+ unsigned long sc_a[16];
};
-#endif /* __ASM_XTENSA_SIGCONTEXT_H */
+#endif /* _XTENSA_SIGCONTEXT_H */
diff --git a/include/asm-xtensa/thread_info.h b/include/asm-xtensa/thread_info.h
index 5ae34ab7159..3fa29799b43 100644
--- a/include/asm-xtensa/thread_info.h
+++ b/include/asm-xtensa/thread_info.h
@@ -116,6 +116,7 @@ static inline struct thread_info *current_thread_info(void)
#define TIF_SINGLESTEP 4 /* restore singlestep on return to user mode */
#define TIF_IRET 5 /* return with iret */
#define TIF_MEMDIE 6
+#define TIF_RESTORE_SIGMASK 7 /* restore signal mask in do_signal() */
#define TIF_POLLING_NRFLAG 16 /* true if poll_idle() is polling TIF_NEED_RESCHED */
#define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE)
@@ -125,6 +126,7 @@ static inline struct thread_info *current_thread_info(void)
#define _TIF_SINGLESTEP (1<<TIF_SINGLESTEP)
#define _TIF_IRET (1<<TIF_IRET)
#define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG)
+#define _TIF_RESTORE_SIGMASK (1<<TIF_RESTORE_SIGMASK)
#define _TIF_WORK_MASK 0x0000FFFE /* work to do on interrupt/exception return */
#define _TIF_ALLWORK_MASK 0x0000FFFF /* work to do on any return to u-space */
diff --git a/include/asm-xtensa/unistd.h b/include/asm-xtensa/unistd.h
index 8a7fb6964ce..9bd34024431 100644
--- a/include/asm-xtensa/unistd.h
+++ b/include/asm-xtensa/unistd.h
@@ -485,8 +485,8 @@ __SYSCALL(217, sys_sched_get_priority_min, 1)
__SYSCALL(218, sys_sched_rr_get_interval, 2)
#define __NR_sched_yield 219
__SYSCALL(219, sys_sched_yield, 0)
-#define __NR_sigreturn 222
-__SYSCALL(222, xtensa_sigreturn, 0)
+#define __NR_available222 222
+__SYSCALL(222, sys_ni_syscall, 0)
/* Signal Handling */