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-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 698079b3a336..d0323cd6a2ea 100644
--- a/arch/xtensa/kernel/asm-offsets.c
+++ b/arch/xtensa/kernel/asm-offsets.c
@@ -39,6 +39,7 @@ int main(void)
39 DEFINE(PT_LEND, offsetof (struct pt_regs, lend)); 39 DEFINE(PT_LEND, offsetof (struct pt_regs, lend));
40 DEFINE(PT_LCOUNT, offsetof (struct pt_regs, lcount)); 40 DEFINE(PT_LCOUNT, offsetof (struct pt_regs, lcount));
41 DEFINE(PT_SAR, offsetof (struct pt_regs, sar)); 41 DEFINE(PT_SAR, offsetof (struct pt_regs, sar));
42 DEFINE(PT_ICOUNTLEVEL, offsetof (struct pt_regs, icountlevel));
42 DEFINE(PT_SYSCALL, offsetof (struct pt_regs, syscall)); 43 DEFINE(PT_SYSCALL, offsetof (struct pt_regs, syscall));
43 DEFINE(PT_AREG, offsetof (struct pt_regs, areg[0])); 44 DEFINE(PT_AREG, offsetof (struct pt_regs, areg[0]));
44 DEFINE(PT_AREG0, offsetof (struct pt_regs, areg[0])); 45 DEFINE(PT_AREG0, offsetof (struct pt_regs, areg[0]));
diff --git a/arch/xtensa/kernel/entry.S b/arch/xtensa/kernel/entry.S
index 9e271ba009bf..8dc7a2c26ff9 100644
--- a/arch/xtensa/kernel/entry.S
+++ b/arch/xtensa/kernel/entry.S
@@ -125,8 +125,9 @@ _user_exception:
125 125
126 movi a2, 0 126 movi a2, 0
127 rsr a3, SAR 127 rsr a3, SAR
128 wsr a2, ICOUNTLEVEL 128 xsr a2, ICOUNTLEVEL
129 s32i a3, a1, PT_SAR 129 s32i a3, a1, PT_SAR
130 s32i a2, a1, PT_ICOUNTLEVEL
130 131
131 /* Rotate ws so that the current windowbase is at bit0. */ 132 /* Rotate ws so that the current windowbase is at bit0. */
132 /* Assume ws = xxwww1yyyy. Rotate ws right, so that a2 = yyyyxxwww1 */ 133 /* Assume ws = xxwww1yyyy. Rotate ws right, so that a2 = yyyyxxwww1 */
@@ -276,8 +277,9 @@ _kernel_exception:
276 277
277 movi a2, 0 278 movi a2, 0
278 rsr a3, SAR 279 rsr a3, SAR
279 wsr a2, ICOUNTLEVEL 280 xsr a2, ICOUNTLEVEL
280 s32i a3, a1, PT_SAR 281 s32i a3, a1, PT_SAR
282 s32i a2, a1, PT_ICOUNTLEVEL
281 283
282 /* Rotate ws so that the current windowbase is at bit0. */ 284 /* Rotate ws so that the current windowbase is at bit0. */
283 /* Assume ws = xxwww1yyyy. Rotate ws right, so that a2 = yyyyxxwww1 */ 285 /* Assume ws = xxwww1yyyy. Rotate ws right, so that a2 = yyyyxxwww1 */
@@ -330,14 +332,16 @@ _kernel_exception:
330 332
331common_exception: 333common_exception:
332 334
333 /* Save EXCVADDR, DEBUGCAUSE, and PC, and clear LCOUNT */ 335 /* Save some registers, disable loops and clear the syscall flag. */
334 336
335 rsr a2, DEBUGCAUSE 337 rsr a2, DEBUGCAUSE
336 rsr a3, EPC_1 338 rsr a3, EPC_1
337 s32i a2, a1, PT_DEBUGCAUSE 339 s32i a2, a1, PT_DEBUGCAUSE
338 s32i a3, a1, PT_PC 340 s32i a3, a1, PT_PC
339 341
342 movi a2, -1
340 rsr a3, EXCVADDR 343 rsr a3, EXCVADDR
344 s32i a2, a1, PT_SYSCALL
341 movi a2, 0 345 movi a2, 0
342 s32i a3, a1, PT_EXCVADDR 346 s32i a3, a1, PT_EXCVADDR
343 xsr a2, LCOUNT 347 xsr a2, LCOUNT
@@ -450,27 +454,8 @@ common_exception_return:
450 454
451 /* Restore the state of the task and return from the exception. */ 455 /* Restore the state of the task and return from the exception. */
452 456
453
454 /* If we are returning from a user exception, and the process
455 * to run next has PT_SINGLESTEP set, we want to setup
456 * ICOUNT and ICOUNTLEVEL to step one instruction.
457 * PT_SINGLESTEP is set by sys_ptrace (ptrace.c)
458 */
459
4604: /* a2 holds GET_CURRENT(a2,a1) */ 4574: /* a2 holds GET_CURRENT(a2,a1) */
461 458
462 l32i a3, a2, TI_TASK
463 l32i a3, a3, TASK_PTRACE
464 bbci.l a3, PT_SINGLESTEP_BIT, 1f # jump if single-step flag is not set
465
466 movi a3, -2 # PT_SINGLESTEP flag is set,
467 movi a4, 1 # icountlevel of 1 means it won't
468 wsr a3, ICOUNT # start counting until after rfe
469 wsr a4, ICOUNTLEVEL # so setup icount & icountlevel.
470 isync
471
4721:
473
474#if XCHAL_EXTRA_SA_SIZE 459#if XCHAL_EXTRA_SA_SIZE
475 460
476 /* For user exceptions, restore the extra state from the user's TCB. */ 461 /* For user exceptions, restore the extra state from the user's TCB. */
@@ -665,6 +650,13 @@ common_exception_exit:
665 wsr a3, LEND 650 wsr a3, LEND
666 wsr a2, LCOUNT 651 wsr a2, LCOUNT
667 652
653 /* We control single stepping through the ICOUNTLEVEL register. */
654
655 l32i a2, a1, PT_ICOUNTLEVEL
656 movi a3, -2
657 wsr a2, ICOUNTLEVEL
658 wsr a3, ICOUNT
659
668 /* Check if it was double exception. */ 660 /* Check if it was double exception. */
669 661
670 l32i a0, a1, PT_DEPC 662 l32i a0, a1, PT_DEPC
diff --git a/arch/xtensa/kernel/head.S b/arch/xtensa/kernel/head.S
index ea89910efa44..67e69139520b 100644
--- a/arch/xtensa/kernel/head.S
+++ b/arch/xtensa/kernel/head.S
@@ -19,6 +19,8 @@
19#include <asm/page.h> 19#include <asm/page.h>
20#include <asm/cacheasm.h> 20#include <asm/cacheasm.h>
21 21
22#include <linux/linkage.h>
23
22/* 24/*
23 * This module contains the entry code for kernel images. It performs the 25 * This module contains the entry code for kernel images. It performs the
24 * minimal setup needed to call the generic C routines. 26 * minimal setup needed to call the generic C routines.
@@ -227,13 +229,14 @@ _startup:
227should_never_return: 229should_never_return:
228 j should_never_return 230 j should_never_return
229 231
230 /* Define some common data structures here. We define them
231 * here in this assembly file due to their unusual alignment
232 * requirements.
233 */
234 232
235 .comm swapper_pg_dir,PAGE_SIZE,PAGE_SIZE 233/*
236 .comm empty_bad_page_table,PAGE_SIZE,PAGE_SIZE 234 * BSS section
237 .comm empty_bad_page,PAGE_SIZE,PAGE_SIZE 235 */
238 .comm empty_zero_page,PAGE_SIZE,PAGE_SIZE 236
237.section ".bss.page_aligned", "w"
238ENTRY(swapper_pg_dir)
239 .fill PAGE_SIZE, 1, 0
240ENTRY(empty_zero_page)
241 .fill PAGE_SIZE, 1, 0
239 242
diff --git a/arch/xtensa/kernel/pci.c b/arch/xtensa/kernel/pci.c
index 45571ccb72d6..77deae5290f0 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,
401 * Also, think for a moment about likes of floppy.c that 401 * Also, think for a moment about likes of floppy.c that
402 * include architecture specific parts. They may want to redefine ins/outs. 402 * include architecture specific parts. They may want to redefine ins/outs.
403 * 403 *
404 * We do not use horroble macroses here because we want to 404 * We do not use horrible macros here because we want to
405 * advance pointer by sizeof(size). 405 * advance pointer by sizeof(size).
406 */ 406 */
407void outsb(unsigned long addr, const void *src, unsigned long count) { 407void 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 1ecf6716c327..2e8d398cf196 100644
--- a/arch/xtensa/kernel/setup.c
+++ b/arch/xtensa/kernel/setup.c
@@ -41,6 +41,7 @@
41#include <asm/platform.h> 41#include <asm/platform.h>
42#include <asm/page.h> 42#include <asm/page.h>
43#include <asm/setup.h> 43#include <asm/setup.h>
44#include <asm/param.h>
44 45
45#if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_DUMMY_CONSOLE) 46#if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_DUMMY_CONSOLE)
46struct screen_info screen_info = { 0, 24, 0, 0, 0, 80, 0, 0, 0, 24, 1, 16}; 47struct 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 58107672a619..033aae0336d2 100644
--- a/arch/xtensa/kernel/signal.c
+++ b/arch/xtensa/kernel/signal.c
@@ -1,397 +1,239 @@
1// TODO coprocessor stuff
2/* 1/*
3 * linux/arch/xtensa/kernel/signal.c 2 * arch/xtensa/kernel/signal.c
4 * 3 *
5 * Copyright (C) 1991, 1992 Linus Torvalds 4 * Default platform functions.
6 * 1997-11-28 Modified for POSIX.1b signals by Richard Henderson
7 *
8 * Joe Taylor <joe@tensilica.com>
9 * Chris Zankel <chris@zankel.net>
10 * 5 *
6 * This file is subject to the terms and conditions of the GNU General Public
7 * License. See the file "COPYING" in the main directory of this archive
8 * for more details.
11 * 9 *
10 * Copyright (C) 2005, 2006 Tensilica Inc.
11 * Copyright (C) 1991, 1992 Linus Torvalds
12 * 1997-11-28 Modified for POSIX.1b signals by Richard Henderson
12 * 13 *
14 * Chris Zankel <chris@zankel.net>
15 * Joe Taylor <joe@tensilica.com>
13 */ 16 */
14 17
15#include <asm/variant/core.h>
16#include <asm/coprocessor.h>
17#include <linux/sched.h>
18#include <linux/mm.h>
19#include <linux/smp.h>
20#include <linux/kernel.h>
21#include <linux/signal.h> 18#include <linux/signal.h>
22#include <linux/errno.h> 19#include <linux/errno.h>
23#include <linux/wait.h>
24#include <linux/ptrace.h> 20#include <linux/ptrace.h>
25#include <linux/unistd.h>
26#include <linux/stddef.h>
27#include <linux/personality.h> 21#include <linux/personality.h>
22#include <linux/freezer.h>
23
28#include <asm/ucontext.h> 24#include <asm/ucontext.h>
29#include <asm/uaccess.h> 25#include <asm/uaccess.h>
30#include <asm/pgtable.h>
31#include <asm/cacheflush.h> 26#include <asm/cacheflush.h>
27#include <asm/coprocessor.h>
28#include <asm/unistd.h>
32 29
33#define DEBUG_SIG 0 30#define DEBUG_SIG 0
34 31
35#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP))) 32#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
36 33
37asmlinkage long sys_wait4(pid_t pid,unsigned int * stat_addr, int options,
38 struct rusage * ru);
39asmlinkage int do_signal(struct pt_regs *regs, sigset_t *oldset); 34asmlinkage int do_signal(struct pt_regs *regs, sigset_t *oldset);
40 35
41extern struct task_struct *coproc_owners[]; 36extern struct task_struct *coproc_owners[];
42 37
38extern void release_all_cp (struct task_struct *);
43 39
44/* 40struct rt_sigframe
45 * Atomically swap in the new signal mask, and wait for a signal. 41{
42 struct siginfo info;
43 struct ucontext uc;
44 cp_state_t cpstate;
45 unsigned char retcode[6];
46 unsigned int window[4];
47};
48
49/*
50 * Flush register windows stored in pt_regs to stack.
51 * Returns 1 for errors.
52 *
53 * Note that windowbase, windowstart, and wmask are not updated!
46 */ 54 */
47 55
48int xtensa_sigsuspend(struct pt_regs *regs) 56int
57flush_window_regs_user(struct pt_regs *regs)
49{ 58{
50 old_sigset_t mask = (old_sigset_t) regs->areg[3]; 59 const unsigned long ws = regs->windowstart;
51 sigset_t saveset; 60 const unsigned long wb = regs->windowbase;
61 unsigned long sp = 0;
62 unsigned long wm;
63 int err = 1;
64 int base;
52 65
53 mask &= _BLOCKABLE; 66 /* Return if no other frames. */
54 spin_lock_irq(&current->sighand->siglock);
55 saveset = current->blocked;
56 siginitset(&current->blocked, mask);
57 recalc_sigpending();
58 spin_unlock_irq(&current->sighand->siglock);
59 67
60 regs->areg[2] = -EINTR; 68 if (regs->wmask == 1)
61 while (1) { 69 return 0;
62 current->state = TASK_INTERRUPTIBLE;
63 schedule();
64 if (do_signal(regs, &saveset))
65 return -EINTR;
66 }
67}
68 70
69asmlinkage int 71 /* Rotate windowmask and skip empty frames. */
70xtensa_rt_sigsuspend(struct pt_regs *regs)
71{
72 sigset_t *unewset = (sigset_t *) regs->areg[4];
73 size_t sigsetsize = (size_t) regs->areg[3];
74 sigset_t saveset, newset;
75 /* XXX: Don't preclude handling different sized sigset_t's. */
76 if (sigsetsize != sizeof(sigset_t))
77 return -EINVAL;
78 72
79 if (copy_from_user(&newset, unewset, sizeof(newset))) 73 wm = (ws >> wb) | (ws << (XCHAL_NUM_AREGS / 4 - wb));
80 return -EFAULT; 74 base = (XCHAL_NUM_AREGS / 4) - (regs->wmask >> 4);
81 sigdelsetmask(&newset, ~_BLOCKABLE); 75
82 spin_lock_irq(&current->sighand->siglock); 76 /* For call8 or call12 frames, we need the previous stack pointer. */
83 saveset = current->blocked;
84 current->blocked = newset;
85 recalc_sigpending();
86 spin_unlock_irq(&current->sighand->siglock);
87 77
88 regs->areg[2] = -EINTR; 78 if ((regs->wmask & 2) == 0)
89 while (1) { 79 if (__get_user(sp, (int*)(regs->areg[base * 4 + 1] - 12)))
90 current->state = TASK_INTERRUPTIBLE; 80 goto errout;
91 schedule();
92 if (do_signal(regs, &saveset))
93 return -EINTR;
94 }
95}
96 81
97asmlinkage int 82 /* Spill frames to stack. */
98xtensa_sigaction(int sig, const struct old_sigaction *act,
99 struct old_sigaction *oact)
100{
101 struct k_sigaction new_ka, old_ka;
102 int ret;
103 83
104 if (act) { 84 while (base < XCHAL_NUM_AREGS / 4) {
105 old_sigset_t mask;
106 if (!access_ok(VERIFY_READ, act, sizeof(*act)) ||
107 __get_user(new_ka.sa.sa_handler, &act->sa_handler) ||
108 __get_user(new_ka.sa.sa_restorer, &act->sa_restorer))
109 return -EFAULT;
110 __get_user(new_ka.sa.sa_flags, &act->sa_flags);
111 __get_user(mask, &act->sa_mask);
112 siginitset(&new_ka.sa.sa_mask, mask);
113 }
114 85
115 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL); 86 int m = (wm >> base);
87 int inc = 0;
116 88
117 if (!ret && oact) { 89 /* Save registers a4..a7 (call8) or a4...a11 (call12) */
118 if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) ||
119 __put_user(old_ka.sa.sa_handler, &oact->sa_handler) ||
120 __put_user(old_ka.sa.sa_restorer, &oact->sa_restorer))
121 return -EFAULT;
122 __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
123 __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
124 }
125 90
126 return ret; 91 if (m & 2) { /* call4 */
127} 92 inc = 1;
128 93
129asmlinkage int 94 } else if (m & 4) { /* call8 */
130xtensa_sigaltstack(struct pt_regs *regs) 95 if (copy_to_user((void*)(sp - 32),
131{ 96 &regs->areg[(base + 1) * 4], 16))
132 const stack_t *uss = (stack_t *) regs->areg[4]; 97 goto errout;
133 stack_t *uoss = (stack_t *) regs->areg[3]; 98 inc = 2;
134 99
135 if (regs->depc > 64) 100 } else if (m & 8) { /* call12 */
136 panic ("Double exception sys_sigreturn\n"); 101 if (copy_to_user((void*)(sp - 48),
102 &regs->areg[(base + 1) * 4], 32))
103 goto errout;
104 inc = 3;
105 }
137 106
107 /* Save current frame a0..a3 under next SP */
138 108
139 return do_sigaltstack(uss, uoss, regs->areg[1]); 109 sp = regs->areg[((base + inc) * 4 + 1) % XCHAL_NUM_AREGS];
140} 110 if (copy_to_user((void*)(sp - 16), &regs->areg[base * 4], 16))
111 goto errout;
112
113 /* Get current stack pointer for next loop iteration. */
114
115 sp = regs->areg[base * 4 + 1];
116 base += inc;
117 }
118
119 return 0;
141 120
121errout:
122 return err;
123}
142 124
143/* 125/*
144 * Do a signal return; undo the signal stack. 126 * Note: We don't copy double exception 'regs', we have to finish double exc.
127 * first before we return to signal handler! This dbl.exc.handler might cause
128 * another double exception, but I think we are fine as the situation is the
129 * same as if we had returned to the signal handerl and got an interrupt
130 * immediately...
145 */ 131 */
146 132
147struct sigframe 133static int
148{ 134setup_sigcontext(struct sigcontext __user *sc, cp_state_t *cpstate,
149 struct sigcontext sc; 135 struct pt_regs *regs, unsigned long mask)
150 struct _cpstate cpstate;
151 unsigned long extramask[_NSIG_WORDS-1];
152 unsigned char retcode[6];
153 unsigned int reserved[4]; /* Reserved area for chaining */
154 unsigned int window[4]; /* Window of 4 registers for initial context */
155};
156
157struct rt_sigframe
158{ 136{
159 struct siginfo info; 137 int err = 0;
160 struct ucontext uc;
161 struct _cpstate cpstate;
162 unsigned char retcode[6];
163 unsigned int reserved[4]; /* Reserved area for chaining */
164 unsigned int window[4]; /* Window of 4 registers for initial context */
165};
166 138
167extern void release_all_cp (struct task_struct *); 139#define COPY(x) err |= __put_user(regs->x, &sc->sc_##x)
140 COPY(pc);
141 COPY(ps);
142 COPY(lbeg);
143 COPY(lend);
144 COPY(lcount);
145 COPY(sar);
146#undef COPY
168 147
148 err |= flush_window_regs_user(regs);
149 err |= __copy_to_user (sc->sc_a, regs->areg, 16 * 4);
169 150
170// FIXME restore_cpextra 151 // err |= __copy_to_user (sc->sc_a, regs->areg, XCHAL_NUM_AREGS * 4)
171static inline int
172restore_cpextra (struct _cpstate *buf)
173{
174#if 0
175 /* The signal handler may have used coprocessors in which
176 * case they are still enabled. We disable them to force a
177 * reloading of the original task's CP state by the lazy
178 * context-switching mechanisms of CP exception handling.
179 * Also, we essentially discard any coprocessor state that the
180 * signal handler created. */
181 152
182 struct task_struct *tsk = current; 153#if XCHAL_HAVE_CP
183 release_all_cp(tsk); 154# error Coprocessors unsupported
184 return __copy_from_user(tsk->thread.cpextra, buf, XTENSA_CP_EXTRA_SIZE); 155 err |= save_cpextra(cpstate);
156 err |= __put_user(err ? NULL : cpstate, &sc->sc_cpstate);
185#endif 157#endif
186 return 0; 158 /* non-iBCS2 extensions.. */
187} 159 err |= __put_user(mask, &sc->oldmask);
188
189/* 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...
190 */
191 160
161 return err;
162}
192 163
193static int 164static int
194restore_sigcontext(struct pt_regs *regs, struct sigcontext *sc) 165restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc)
195{ 166{
196 struct thread_struct *thread;
197 unsigned int err = 0; 167 unsigned int err = 0;
198 unsigned long ps; 168 unsigned long ps;
199 struct _cpstate *buf;
200 169
201#define COPY(x) err |= __get_user(regs->x, &sc->sc_##x) 170#define COPY(x) err |= __get_user(regs->x, &sc->sc_##x)
202 COPY(pc); 171 COPY(pc);
203 COPY(depc);
204 COPY(wmask);
205 COPY(lbeg); 172 COPY(lbeg);
206 COPY(lend); 173 COPY(lend);
207 COPY(lcount); 174 COPY(lcount);
208 COPY(sar); 175 COPY(sar);
209 COPY(windowbase);
210 COPY(windowstart);
211#undef COPY 176#undef COPY
212 177
178 /* All registers were flushed to stack. Start with a prestine frame. */
179
180 regs->wmask = 1;
181 regs->windowbase = 0;
182 regs->windowstart = 1;
183
213 /* For PS, restore only PS.CALLINC. 184 /* For PS, restore only PS.CALLINC.
214 * Assume that all other bits are either the same as for the signal 185 * Assume that all other bits are either the same as for the signal
215 * handler, or the user mode value doesn't matter (e.g. PS.OWB). 186 * handler, or the user mode value doesn't matter (e.g. PS.OWB).
216 */ 187 */
217 err |= __get_user(ps, &sc->sc_ps); 188 err |= __get_user(ps, &sc->sc_ps);
218 regs->ps = (regs->ps & ~PS_CALLINC_MASK) 189 regs->ps = (regs->ps & ~PS_CALLINC_MASK) | (ps & PS_CALLINC_MASK);
219 | (ps & PS_CALLINC_MASK);
220 190
221 /* Additional corruption checks */ 191 /* Additional corruption checks */
222 192
223 if ((regs->windowbase >= (XCHAL_NUM_AREGS/4))
224 || ((regs->windowstart & ~((1<<(XCHAL_NUM_AREGS/4)) - 1)) != 0) )
225 err = 1;
226 if ((regs->lcount > 0) 193 if ((regs->lcount > 0)
227 && ((regs->lbeg > TASK_SIZE) || (regs->lend > TASK_SIZE)) ) 194 && ((regs->lbeg > TASK_SIZE) || (regs->lend > TASK_SIZE)) )
228 err = 1; 195 err = 1;
229 196
230 /* Restore extended register state. 197 err |= __copy_from_user(regs->areg, sc->sc_a, 16 * 4);
231 * See struct thread_struct in processor.h.
232 */
233 thread = &current->thread;
234
235 err |= __copy_from_user (regs->areg, sc->sc_areg, XCHAL_NUM_AREGS*4);
236 err |= __get_user(buf, &sc->sc_cpstate);
237 if (buf) {
238 if (!access_ok(VERIFY_READ, buf, sizeof(*buf)))
239 goto badframe;
240 err |= restore_cpextra(buf);
241 }
242
243 regs->syscall = -1; /* disable syscall checks */
244 return err;
245
246badframe:
247 return 1;
248}
249
250static inline void
251flush_my_cpstate(struct task_struct *tsk)
252{
253 unsigned long flags;
254 local_irq_save(flags);
255
256#if 0 // FIXME
257 for (i = 0; i < XCHAL_CP_NUM; i++) {
258 if (tsk == coproc_owners[i]) {
259 xthal_validate_cp(i);
260 xthal_save_cpregs(tsk->thread.cpregs_ptr[i], i);
261 198
262 /* Invalidate and "disown" the cp to allow 199#if XCHAL_HAVE_CP
263 * callers the chance to reset cp state in the 200# error Coprocessors unsupported
264 * task_struct. */ 201 /* The signal handler may have used coprocessors in which
202 * case they are still enabled. We disable them to force a
203 * reloading of the original task's CP state by the lazy
204 * context-switching mechanisms of CP exception handling.
205 * Also, we essentially discard any coprocessor state that the
206 * signal handler created. */
265 207
266 xthal_invalidate_cp(i); 208 if (!err) {
267 coproc_owners[i] = 0; 209 struct task_struct *tsk = current;
268 } 210 release_all_cp(tsk);
211 err |= __copy_from_user(tsk->thread.cpextra, sc->sc_cpstate,
212 XTENSA_CP_EXTRA_SIZE);
269 } 213 }
270#endif 214#endif
271 local_irq_restore(flags);
272}
273
274/* Return codes:
275 0: nothing saved
276 1: stuff to save, successful
277 -1: stuff to save, error happened
278*/
279static int
280save_cpextra (struct _cpstate *buf)
281{
282#if XCHAL_CP_NUM == 0
283 return 0;
284#else
285
286 /* FIXME: If a task has never used a coprocessor, there is
287 * no need to save and restore anything. Tracking this
288 * information would allow us to optimize this section.
289 * Perhaps we can use current->used_math or (current->flags &
290 * PF_USEDFPU) or define a new field in the thread
291 * structure. */
292
293 /* We flush any live, task-owned cp state to the task_struct,
294 * then copy it all to the sigframe. Then we clear all
295 * cp/extra state in the task_struct, effectively
296 * clearing/resetting all cp/extra state for the signal
297 * handler (cp-exception handling will load these new values
298 * into the cp/extra registers.) This step is important for
299 * things like a floating-point cp, where the OS must reset
300 * the FCR to the default rounding mode. */
301
302 int err = 0;
303 struct task_struct *tsk = current;
304
305 flush_my_cpstate(tsk);
306 /* Note that we just copy everything: 'extra' and 'cp' state together.*/
307 err |= __copy_to_user(buf, tsk->thread.cp_save, XTENSA_CP_EXTRA_SIZE);
308 memset(tsk->thread.cp_save, 0, XTENSA_CP_EXTRA_SIZE);
309
310#if (XTENSA_CP_EXTRA_SIZE == 0)
311#error Sanity check on memset above, cpextra_size should not be zero.
312#endif
313
314 return err ? -1 : 1;
315#endif
316}
317
318static int
319setup_sigcontext(struct sigcontext *sc, struct _cpstate *cpstate,
320 struct pt_regs *regs, unsigned long mask)
321{
322 struct thread_struct *thread;
323 int err = 0;
324
325//printk("setup_sigcontext\n");
326#define COPY(x) err |= __put_user(regs->x, &sc->sc_##x)
327 COPY(pc);
328 COPY(ps);
329 COPY(depc);
330 COPY(wmask);
331 COPY(lbeg);
332 COPY(lend);
333 COPY(lcount);
334 COPY(sar);
335 COPY(windowbase);
336 COPY(windowstart);
337#undef COPY
338
339 /* Save extended register state.
340 * See struct thread_struct in processor.h.
341 */
342 thread = &current->thread;
343 err |= __copy_to_user (sc->sc_areg, regs->areg, XCHAL_NUM_AREGS * 4);
344 err |= save_cpextra(cpstate);
345 err |= __put_user(err ? NULL : cpstate, &sc->sc_cpstate);
346 /* non-iBCS2 extensions.. */
347 err |= __put_user(mask, &sc->oldmask);
348 215
216 regs->syscall = -1; /* disable syscall checks */
349 return err; 217 return err;
350} 218}
351 219
352asmlinkage int xtensa_sigreturn(struct pt_regs *regs)
353{
354 struct sigframe *frame = (struct sigframe *)regs->areg[1];
355 sigset_t set;
356 if (regs->depc > 64)
357 panic ("Double exception sys_sigreturn\n");
358
359 if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
360 goto badframe;
361
362 if (__get_user(set.sig[0], &frame->sc.oldmask)
363 || (_NSIG_WORDS > 1
364 && __copy_from_user(&set.sig[1], &frame->extramask,
365 sizeof(frame->extramask))))
366 goto badframe;
367
368 sigdelsetmask(&set, ~_BLOCKABLE);
369
370 spin_lock_irq(&current->sighand->siglock);
371 current->blocked = set;
372 recalc_sigpending();
373 spin_unlock_irq(&current->sighand->siglock);
374 220
375 if (restore_sigcontext(regs, &frame->sc))
376 goto badframe;
377 return regs->areg[2];
378 221
379badframe: 222/*
380 force_sig(SIGSEGV, current); 223 * Do a signal return; undo the signal stack.
381 return 0; 224 */
382}
383 225
384asmlinkage int xtensa_rt_sigreturn(struct pt_regs *regs) 226asmlinkage long xtensa_rt_sigreturn(long a0, long a1, long a2, long a3,
227 long a4, long a5, struct pt_regs *regs)
385{ 228{
386 struct rt_sigframe *frame = (struct rt_sigframe *)regs->areg[1]; 229 struct rt_sigframe __user *frame;
387 sigset_t set; 230 sigset_t set;
388 stack_t st;
389 int ret; 231 int ret;
232
390 if (regs->depc > 64) 233 if (regs->depc > 64)
391 { 234 panic("rt_sigreturn in double exception!\n");
392 printk("!!!!!!! DEPC !!!!!!!\n"); 235
393 return 0; 236 frame = (struct rt_sigframe __user *) regs->areg[1];
394 }
395 237
396 if (!access_ok(VERIFY_READ, frame, sizeof(*frame))) 238 if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
397 goto badframe; 239 goto badframe;
@@ -407,13 +249,11 @@ asmlinkage int xtensa_rt_sigreturn(struct pt_regs *regs)
407 249
408 if (restore_sigcontext(regs, &frame->uc.uc_mcontext)) 250 if (restore_sigcontext(regs, &frame->uc.uc_mcontext))
409 goto badframe; 251 goto badframe;
252
410 ret = regs->areg[2]; 253 ret = regs->areg[2];
411 254
412 if (__copy_from_user(&st, &frame->uc.uc_stack, sizeof(st))) 255 if (do_sigaltstack(&frame->uc.uc_stack, NULL, regs->areg[1]) == -EFAULT)
413 goto badframe; 256 goto badframe;
414 /* It is more difficult to avoid calling this function than to
415 call it and ignore errors. */
416 do_sigaltstack(&st, NULL, regs->areg[1]);
417 257
418 return ret; 258 return ret;
419 259
@@ -422,77 +262,50 @@ badframe:
422 return 0; 262 return 0;
423} 263}
424 264
425/* 265
426 * Set up a signal frame.
427 */
428 266
429/* 267/*
430 * Determine which stack to use.. 268 * Set up a signal frame.
431 */ 269 */
432static inline void *
433get_sigframe(struct k_sigaction *ka, unsigned long sp, size_t frame_size)
434{
435 if ((ka->sa.sa_flags & SA_ONSTACK) != 0 && ! sas_ss_flags(sp))
436 sp = current->sas_ss_sp + current->sas_ss_size;
437
438 return (void *)((sp - frame_size) & -16ul);
439}
440
441#define USE_SIGRETURN 0
442#define USE_RT_SIGRETURN 1
443 270
444static int 271static int
445gen_return_code(unsigned char *codemem, unsigned int use_rt_sigreturn) 272gen_return_code(unsigned char *codemem)
446{ 273{
447 unsigned int retcall;
448 int err = 0; 274 int err = 0;
449 275
450#if 0 276 /*
451 /* Ignoring SA_RESTORER for now; it's supposed to be obsolete, 277 * The 12-bit immediate is really split up within the 24-bit MOVI
452 * and the xtensa glibc doesn't use it. 278 * instruction. As long as the above system call numbers fit within
279 * 8-bits, the following code works fine. See the Xtensa ISA for
280 * details.
453 */ 281 */
454 if (ka->sa.sa_flags & SA_RESTORER) {
455 regs->pr = (unsigned long) ka->sa.sa_restorer;
456 } else
457#endif /* 0 */
458 {
459
460#if (__NR_sigreturn > 255) || (__NR_rt_sigreturn > 255)
461
462/* The 12-bit immediate is really split up within the 24-bit MOVI
463 * instruction. As long as the above system call numbers fit within
464 * 8-bits, the following code works fine. See the Xtensa ISA for
465 * details.
466 */
467 282
468#error Generating the MOVI instruction below breaks! 283#if __NR_rt_sigreturn > 255
284# error Generating the MOVI instruction below breaks!
469#endif 285#endif
470 286
471 retcall = use_rt_sigreturn ? __NR_rt_sigreturn : __NR_sigreturn;
472
473#ifdef __XTENSA_EB__ /* Big Endian version */ 287#ifdef __XTENSA_EB__ /* Big Endian version */
474 /* Generate instruction: MOVI a2, retcall */ 288 /* Generate instruction: MOVI a2, __NR_rt_sigreturn */
475 err |= __put_user(0x22, &codemem[0]); 289 err |= __put_user(0x22, &codemem[0]);
476 err |= __put_user(0x0a, &codemem[1]); 290 err |= __put_user(0x0a, &codemem[1]);
477 err |= __put_user(retcall, &codemem[2]); 291 err |= __put_user(__NR_rt_sigreturn, &codemem[2]);
478 /* Generate instruction: SYSCALL */ 292 /* Generate instruction: SYSCALL */
479 err |= __put_user(0x00, &codemem[3]); 293 err |= __put_user(0x00, &codemem[3]);
480 err |= __put_user(0x05, &codemem[4]); 294 err |= __put_user(0x05, &codemem[4]);
481 err |= __put_user(0x00, &codemem[5]); 295 err |= __put_user(0x00, &codemem[5]);
482 296
483#elif defined __XTENSA_EL__ /* Little Endian version */ 297#elif defined __XTENSA_EL__ /* Little Endian version */
484 /* Generate instruction: MOVI a2, retcall */ 298 /* Generate instruction: MOVI a2, __NR_rt_sigreturn */
485 err |= __put_user(0x22, &codemem[0]); 299 err |= __put_user(0x22, &codemem[0]);
486 err |= __put_user(0xa0, &codemem[1]); 300 err |= __put_user(0xa0, &codemem[1]);
487 err |= __put_user(retcall, &codemem[2]); 301 err |= __put_user(__NR_rt_sigreturn, &codemem[2]);
488 /* Generate instruction: SYSCALL */ 302 /* Generate instruction: SYSCALL */
489 err |= __put_user(0x00, &codemem[3]); 303 err |= __put_user(0x00, &codemem[3]);
490 err |= __put_user(0x50, &codemem[4]); 304 err |= __put_user(0x50, &codemem[4]);
491 err |= __put_user(0x00, &codemem[5]); 305 err |= __put_user(0x00, &codemem[5]);
492#else 306#else
493#error Must use compiler for Xtensa processors. 307# error Must use compiler for Xtensa processors.
494#endif 308#endif
495 }
496 309
497 /* Flush generated code out of the data cache */ 310 /* Flush generated code out of the data cache */
498 311
@@ -504,97 +317,29 @@ gen_return_code(unsigned char *codemem, unsigned int use_rt_sigreturn)
504 return err; 317 return err;
505} 318}
506 319
507static void
508set_thread_state(struct pt_regs *regs, void *stack, unsigned char *retaddr,
509 void *handler, unsigned long arg1, void *arg2, void *arg3)
510{
511 /* Set up registers for signal handler */
512 start_thread(regs, (unsigned long) handler, (unsigned long) stack);
513
514 /* Set up a stack frame for a call4
515 * Note: PS.CALLINC is set to one by start_thread
516 */
517 regs->areg[4] = (((unsigned long) retaddr) & 0x3fffffff) | 0x40000000;
518 regs->areg[6] = arg1;
519 regs->areg[7] = (unsigned long) arg2;
520 regs->areg[8] = (unsigned long) arg3;
521}
522 320
523static void setup_frame(int sig, struct k_sigaction *ka, 321static void setup_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
524 sigset_t *set, struct pt_regs *regs) 322 sigset_t *set, struct pt_regs *regs)
525{ 323{
526 struct sigframe *frame; 324 struct rt_sigframe *frame;
527 int err = 0; 325 int err = 0;
528 int signal; 326 int signal;
327 unsigned long sp, ra;
529 328
530 frame = get_sigframe(ka, regs->areg[1], sizeof(*frame)); 329 sp = regs->areg[1];
531 if (regs->depc > 64)
532 {
533 printk("!!!!!!! DEPC !!!!!!!\n");
534 return;
535 }
536
537
538 if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
539 goto give_sigsegv;
540
541 signal = current_thread_info()->exec_domain
542 && current_thread_info()->exec_domain->signal_invmap
543 && sig < 32
544 ? current_thread_info()->exec_domain->signal_invmap[sig]
545 : sig;
546
547 err |= setup_sigcontext(&frame->sc, &frame->cpstate, regs, set->sig[0]);
548 330
549 if (_NSIG_WORDS > 1) { 331 if ((ka->sa.sa_flags & SA_ONSTACK) != 0 && ! on_sig_stack(sp)) {
550 err |= __copy_to_user(frame->extramask, &set->sig[1], 332 sp = current->sas_ss_sp + current->sas_ss_size;
551 sizeof(frame->extramask));
552 } 333 }
553 334
554 /* Create sys_sigreturn syscall in stack frame */ 335 frame = (void *)((sp - sizeof(*frame)) & -16ul);
555 err |= gen_return_code(frame->retcode, USE_SIGRETURN);
556
557 if (err)
558 goto give_sigsegv;
559
560 /* Create signal handler execution context.
561 * Return context not modified until this point.
562 */
563 set_thread_state(regs, frame, frame->retcode,
564 ka->sa.sa_handler, signal, &frame->sc, NULL);
565
566 /* Set access mode to USER_DS. Nomenclature is outdated, but
567 * functionality is used in uaccess.h
568 */
569 set_fs(USER_DS);
570
571
572#if DEBUG_SIG
573 printk("SIG deliver (%s:%d): signal=%d sp=%p pc=%08x\n",
574 current->comm, current->pid, signal, frame, regs->pc);
575#endif
576
577 return;
578
579give_sigsegv:
580 if (sig == SIGSEGV)
581 ka->sa.sa_handler = SIG_DFL;
582 force_sig(SIGSEGV, current);
583}
584
585static void setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
586 sigset_t *set, struct pt_regs *regs)
587{
588 struct rt_sigframe *frame;
589 int err = 0;
590 int signal;
591 336
592 frame = get_sigframe(ka, regs->areg[1], sizeof(*frame));
593 if (regs->depc > 64) 337 if (regs->depc > 64)
594 panic ("Double exception sys_sigreturn\n"); 338 panic ("Double exception sys_sigreturn\n");
595 339
596 if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) 340 if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) {
597 goto give_sigsegv; 341 goto give_sigsegv;
342 }
598 343
599 signal = current_thread_info()->exec_domain 344 signal = current_thread_info()->exec_domain
600 && current_thread_info()->exec_domain->signal_invmap 345 && 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,
602 ? current_thread_info()->exec_domain->signal_invmap[sig] 347 ? current_thread_info()->exec_domain->signal_invmap[sig]
603 : sig; 348 : sig;
604 349
605 err |= copy_siginfo_to_user(&frame->info, info); 350 if (ka->sa.sa_flags & SA_SIGINFO) {
351 err |= copy_siginfo_to_user(&frame->info, info);
352 }
353
354 /* Create the user context. */
606 355
607 /* Create the ucontext. */
608 err |= __put_user(0, &frame->uc.uc_flags); 356 err |= __put_user(0, &frame->uc.uc_flags);
609 err |= __put_user(0, &frame->uc.uc_link); 357 err |= __put_user(0, &frame->uc.uc_link);
610 err |= __put_user((void *)current->sas_ss_sp, 358 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,
617 err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set)); 365 err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
618 366
619 /* Create sys_rt_sigreturn syscall in stack frame */ 367 /* Create sys_rt_sigreturn syscall in stack frame */
620 err |= gen_return_code(frame->retcode, USE_RT_SIGRETURN);
621 368
622 if (err) 369 err |= gen_return_code(frame->retcode);
370
371 if (err) {
623 goto give_sigsegv; 372 goto give_sigsegv;
373 }
374
624 375
625 /* Create signal handler execution context. 376 /*
377 * Create signal handler execution context.
626 * Return context not modified until this point. 378 * Return context not modified until this point.
627 */ 379 */
628 set_thread_state(regs, frame, frame->retcode, 380
629 ka->sa.sa_handler, signal, &frame->info, &frame->uc); 381 /* Set up registers for signal handler */
382 start_thread(regs, (unsigned long) ka->sa.sa_handler,
383 (unsigned long) frame);
384
385 /* Set up a stack frame for a call4
386 * Note: PS.CALLINC is set to one by start_thread
387 */
388 ra = (unsigned long) frame->retcode;
389 regs->areg[4] = (((unsigned long) ra) & 0x3fffffff) | 0x40000000;
390 regs->areg[6] = (unsigned long) signal;
391 regs->areg[7] = (unsigned long) &frame->info;
392 regs->areg[8] = (unsigned long) &frame->uc;
630 393
631 /* Set access mode to USER_DS. Nomenclature is outdated, but 394 /* Set access mode to USER_DS. Nomenclature is outdated, but
632 * functionality is used in uaccess.h 395 * functionality is used in uaccess.h
@@ -646,6 +409,48 @@ give_sigsegv:
646 force_sig(SIGSEGV, current); 409 force_sig(SIGSEGV, current);
647} 410}
648 411
412/*
413 * Atomically swap in the new signal mask, and wait for a signal.
414 */
415
416asmlinkage long xtensa_rt_sigsuspend(sigset_t __user *unewset,
417 size_t sigsetsize,
418 long a2, long a3, long a4, long a5,
419 struct pt_regs *regs)
420{
421 sigset_t saveset, newset;
422
423 /* XXX: Don't preclude handling different sized sigset_t's. */
424 if (sigsetsize != sizeof(sigset_t))
425 return -EINVAL;
426
427 if (copy_from_user(&newset, unewset, sizeof(newset)))
428 return -EFAULT;
429
430 sigdelsetmask(&newset, ~_BLOCKABLE);
431 spin_lock_irq(&current->sighand->siglock);
432 saveset = current->blocked;
433 current->blocked = newset;
434 recalc_sigpending();
435 spin_unlock_irq(&current->sighand->siglock);
436
437 regs->areg[2] = -EINTR;
438 while (1) {
439 current->state = TASK_INTERRUPTIBLE;
440 schedule();
441 if (do_signal(regs, &saveset))
442 return -EINTR;
443 }
444}
445
446asmlinkage long xtensa_sigaltstack(const stack_t __user *uss,
447 stack_t __user *uoss,
448 long a2, long a3, long a4, long a5,
449 struct pt_regs *regs)
450{
451 return do_sigaltstack(uss, uoss, regs->areg[1]);
452}
453
649 454
650 455
651/* 456/*
@@ -663,51 +468,89 @@ int do_signal(struct pt_regs *regs, sigset_t *oldset)
663 int signr; 468 int signr;
664 struct k_sigaction ka; 469 struct k_sigaction ka;
665 470
471 if (!user_mode(regs))
472 return 0;
473
474 if (try_to_freeze())
475 goto no_signal;
476
666 if (!oldset) 477 if (!oldset)
667 oldset = &current->blocked; 478 oldset = &current->blocked;
668 479
480 task_pt_regs(current)->icountlevel = 0;
481
669 signr = get_signal_to_deliver(&info, &ka, regs, NULL); 482 signr = get_signal_to_deliver(&info, &ka, regs, NULL);
670 483
671 /* Are we from a system call? */ 484 if (signr > 0) {
672 if (regs->syscall >= 0) { 485
673 /* If so, check system call restarting.. */ 486 /* Are we from a system call? */
674 switch (regs->areg[2]) { 487
675 case ERESTARTNOHAND: 488 if ((signed)regs->syscall >= 0) {
676 case ERESTART_RESTARTBLOCK:
677 regs->areg[2] = -EINTR;
678 break;
679 489
680 case ERESTARTSYS: 490 /* If so, check system call restarting.. */
681 if (!(ka.sa.sa_flags & SA_RESTART)) { 491
492 switch (regs->areg[2]) {
493 case -ERESTARTNOHAND:
494 case -ERESTART_RESTARTBLOCK:
682 regs->areg[2] = -EINTR; 495 regs->areg[2] = -EINTR;
683 break; 496 break;
684 } 497
685 /* fallthrough */ 498 case -ERESTARTSYS:
686 case ERESTARTNOINTR: 499 if (!(ka.sa.sa_flags & SA_RESTART)) {
687 regs->areg[2] = regs->syscall; 500 regs->areg[2] = -EINTR;
688 regs->pc -= 3; 501 break;
502 }
503 /* fallthrough */
504 case -ERESTARTNOINTR:
505 regs->areg[2] = regs->syscall;
506 regs->pc -= 3;
507 break;
508
509 default:
510 /* nothing to do */
511 if (regs->areg[2] != 0)
512 break;
513 }
689 } 514 }
690 }
691 515
692 if (signr == 0) 516 /* Whee! Actually deliver the signal. */
693 return 0; /* no signals delivered */ 517 /* Set up the stack frame */
518 setup_frame(signr, &ka, &info, oldset, regs);
694 519
695 /* Whee! Actually deliver the signal. */ 520 if (ka.sa.sa_flags & SA_ONESHOT)
521 ka.sa.sa_handler = SIG_DFL;
696 522
697 /* Set up the stack frame */ 523 spin_lock_irq(&current->sighand->siglock);
698 if (ka.sa.sa_flags & SA_SIGINFO) 524 sigorsets(&current->blocked, &current->blocked, &ka.sa.sa_mask);
699 setup_rt_frame(signr, &ka, &info, oldset, regs); 525 if (!(ka.sa.sa_flags & SA_NODEFER))
700 else 526 sigaddset(&current->blocked, signr);
701 setup_frame(signr, &ka, oldset, regs); 527 recalc_sigpending();
528 spin_unlock_irq(&current->sighand->siglock);
529 if (current->ptrace & PT_SINGLESTEP)
530 task_pt_regs(current)->icountlevel = 1;
702 531
703 if (ka.sa.sa_flags & SA_ONESHOT) 532 return 1;
704 ka.sa.sa_handler = SIG_DFL; 533 }
705 534
706 spin_lock_irq(&current->sighand->siglock); 535no_signal:
707 sigorsets(&current->blocked, &current->blocked, &ka.sa.sa_mask); 536 /* Did we come from a system call? */
708 if (!(ka.sa.sa_flags & SA_NODEFER)) 537 if ((signed) regs->syscall >= 0) {
709 sigaddset(&current->blocked, signr); 538 /* Restart the system call - no handlers present */
710 recalc_sigpending(); 539 switch (regs->areg[2]) {
711 spin_unlock_irq(&current->sighand->siglock); 540 case -ERESTARTNOHAND:
712 return 1; 541 case -ERESTARTSYS:
542 case -ERESTARTNOINTR:
543 regs->areg[2] = regs->syscall;
544 regs->pc -= 3;
545 break;
546 case -ERESTART_RESTARTBLOCK:
547 regs->areg[2] = __NR_restart_syscall;
548 regs->pc -= 3;
549 break;
550 }
551 }
552 if (current->ptrace & PT_SINGLESTEP)
553 task_pt_regs(current)->icountlevel = 1;
554 return 0;
713} 555}
556
diff --git a/arch/xtensa/kernel/vmlinux.lds.S b/arch/xtensa/kernel/vmlinux.lds.S
index 4b7b4ff79973..b0582c3c5f8d 100644
--- a/arch/xtensa/kernel/vmlinux.lds.S
+++ b/arch/xtensa/kernel/vmlinux.lds.S
@@ -84,9 +84,7 @@ SECTIONS
84 { 84 {
85 /* The .head.text section must be the first section! */ 85 /* The .head.text section must be the first section! */
86 *(.head.text) 86 *(.head.text)
87 *(.literal) 87 *(.literal .text)
88 TEXT_TEXT
89 *(.srom.text)
90 VMLINUX_SYMBOL(__sched_text_start) = .; 88 VMLINUX_SYMBOL(__sched_text_start) = .;
91 *(.sched.literal .sched.text) 89 *(.sched.literal .sched.text)
92 VMLINUX_SYMBOL(__sched_text_end) = .; 90 VMLINUX_SYMBOL(__sched_text_end) = .;
@@ -96,6 +94,7 @@ SECTIONS
96 94
97 } 95 }
98 _etext = .; 96 _etext = .;
97 PROVIDE (etext = .);
99 98
100 . = ALIGN(16); 99 . = ALIGN(16);
101 100
@@ -103,32 +102,6 @@ SECTIONS
103 102
104 /* Relocation table */ 103 /* Relocation table */
105 104
106 . = ALIGN(16);
107 __boot_reloc_table_start = ABSOLUTE(.);
108
109 __relocate : {
110
111 RELOCATE_ENTRY(_WindowVectors_text,
112 .WindowVectors.text);
113#if 0
114 RELOCATE_ENTRY(_KernelExceptionVector_literal,
115 .KernelExceptionVector.literal);
116#endif
117 RELOCATE_ENTRY(_KernelExceptionVector_text,
118 .KernelExceptionVector.text);
119#if 0
120 RELOCATE_ENTRY(_UserExceptionVector_literal,
121 .UserExceptionVector.literal);
122#endif
123 RELOCATE_ENTRY(_UserExceptionVector_text,
124 .UserExceptionVector.text);
125 RELOCATE_ENTRY(_DoubleExceptionVector_literal,
126 .DoubleExceptionVector.literal);
127 RELOCATE_ENTRY(_DoubleExceptionVector_text,
128 .DoubleExceptionVector.text);
129 }
130 __boot_reloc_table_end = ABSOLUTE(.) ;
131
132 .fixup : { *(.fixup) } 105 .fixup : { *(.fixup) }
133 106
134 . = ALIGN(16); 107 . = ALIGN(16);
@@ -145,8 +118,7 @@ SECTIONS
145 _fdata = .; 118 _fdata = .;
146 .data : 119 .data :
147 { 120 {
148 DATA_DATA 121 *(.data) CONSTRUCTORS
149 CONSTRUCTORS
150 . = ALIGN(XCHAL_ICACHE_LINESIZE); 122 . = ALIGN(XCHAL_ICACHE_LINESIZE);
151 *(.data.cacheline_aligned) 123 *(.data.cacheline_aligned)
152 } 124 }
@@ -174,6 +146,22 @@ SECTIONS
174 __tagtable_begin = .; 146 __tagtable_begin = .;
175 *(.taglist) 147 *(.taglist)
176 __tagtable_end = .; 148 __tagtable_end = .;
149
150 . = ALIGN(16);
151 __boot_reloc_table_start = ABSOLUTE(.);
152
153 RELOCATE_ENTRY(_WindowVectors_text,
154 .WindowVectors.text);
155 RELOCATE_ENTRY(_KernelExceptionVector_text,
156 .KernelExceptionVector.text);
157 RELOCATE_ENTRY(_UserExceptionVector_text,
158 .UserExceptionVector.text);
159 RELOCATE_ENTRY(_DoubleExceptionVector_literal,
160 .DoubleExceptionVector.literal);
161 RELOCATE_ENTRY(_DoubleExceptionVector_text,
162 .DoubleExceptionVector.text);
163
164 __boot_reloc_table_end = ABSOLUTE(.) ;
177 } 165 }
178 166
179 . = ALIGN(XCHAL_ICACHE_LINESIZE); 167 . = ALIGN(XCHAL_ICACHE_LINESIZE);
@@ -194,16 +182,6 @@ SECTIONS
194 182
195 SECURITY_INIT 183 SECURITY_INIT
196 184
197 . = ALIGN(4);
198
199 __start___ftr_fixup = .;
200 __ftr_fixup : { *(__ftr_fixup) }
201 __stop___ftr_fixup = .;
202
203 . = ALIGN(4096);
204 __per_cpu_start = .;
205 .data.percpu : { *(.data.percpu) }
206 __per_cpu_end = .;
207 185
208#ifdef CONFIG_BLK_DEV_INITRD 186#ifdef CONFIG_BLK_DEV_INITRD
209 . = ALIGN(4096); 187 . = ALIGN(4096);
@@ -212,6 +190,12 @@ SECTIONS
212 __initramfs_end = .; 190 __initramfs_end = .;
213#endif 191#endif
214 192
193 . = ALIGN(4096);
194 __per_cpu_start = .;
195 .data.percpu : { *(.data.percpu) }
196 __per_cpu_end = .;
197
198
215 /* We need this dummy segment here */ 199 /* We need this dummy segment here */
216 200
217 . = ALIGN(4); 201 . = ALIGN(4);
@@ -273,9 +257,9 @@ SECTIONS
273 257
274 /* BSS section */ 258 /* BSS section */
275 _bss_start = .; 259 _bss_start = .;
276 .sbss : { *(.sbss) *(.scommon) } 260 .bss : { *(.bss.page_aligned) *(.bss) }
277 .bss : { *(COMMON) *(.bss) }
278 _bss_end = .; 261 _bss_end = .;
262
279 _end = .; 263 _end = .;
280 264
281 /* only used by the boot loader */ 265 /* only used by the boot loader */
@@ -293,16 +277,16 @@ SECTIONS
293 *(.ResetVector.text) 277 *(.ResetVector.text)
294 } 278 }
295 279
296
297 /* Sections to be discarded */ 280 /* Sections to be discarded */
298 /DISCARD/ : 281 /DISCARD/ :
299 { 282 {
300 *(.text.exit) 283 *(.exit.literal .exit.text)
301 *(.text.exit.literal) 284 *(.exit.data)
302 *(.data.exit)
303 *(.exitcall.exit) 285 *(.exitcall.exit)
304 } 286 }
305 287
288 .xt.lit : { *(.xt.lit) }
289 .xt.prop : { *(.xt.prop) }
306 290
307 .debug 0 : { *(.debug) } 291 .debug 0 : { *(.debug) }
308 .line 0 : { *(.line) } 292 .line 0 : { *(.line) }
diff --git a/arch/xtensa/kernel/xtensa_ksyms.c b/arch/xtensa/kernel/xtensa_ksyms.c
index cd7e6a020602..60dbdb43fb4c 100644
--- a/arch/xtensa/kernel/xtensa_ksyms.c
+++ b/arch/xtensa/kernel/xtensa_ksyms.c
@@ -38,21 +38,10 @@
38/* 38/*
39 * String functions 39 * String functions
40 */ 40 */
41EXPORT_SYMBOL(memcmp);
42EXPORT_SYMBOL(memset); 41EXPORT_SYMBOL(memset);
43EXPORT_SYMBOL(memcpy); 42EXPORT_SYMBOL(memcpy);
44EXPORT_SYMBOL(memmove); 43EXPORT_SYMBOL(memmove);
45EXPORT_SYMBOL(memchr);
46EXPORT_SYMBOL(strcat);
47EXPORT_SYMBOL(strchr);
48EXPORT_SYMBOL(strlen);
49EXPORT_SYMBOL(strncat);
50EXPORT_SYMBOL(strnlen);
51EXPORT_SYMBOL(strrchr);
52EXPORT_SYMBOL(strstr);
53 44
54EXPORT_SYMBOL(enable_irq);
55EXPORT_SYMBOL(disable_irq);
56EXPORT_SYMBOL(kernel_thread); 45EXPORT_SYMBOL(kernel_thread);
57 46
58/* 47/*
diff --git a/arch/xtensa/lib/strncpy_user.S b/arch/xtensa/lib/strncpy_user.S
index a834057bda6b..b2655d94558d 100644
--- a/arch/xtensa/lib/strncpy_user.S
+++ b/arch/xtensa/lib/strncpy_user.S
@@ -25,18 +25,18 @@
25/* 25/*
26 * char *__strncpy_user(char *dst, const char *src, size_t len) 26 * char *__strncpy_user(char *dst, const char *src, size_t len)
27 */ 27 */
28.text 28
29.begin literal 29#ifdef __XTENSA_EB__
30.align 4 30# define MASK0 0xff000000
31.Lmask0: 31# define MASK1 0x00ff0000
32 .byte 0xff, 0x00, 0x00, 0x00 32# define MASK2 0x0000ff00
33.Lmask1: 33# define MASK3 0x000000ff
34 .byte 0x00, 0xff, 0x00, 0x00 34#else
35.Lmask2: 35# define MASK0 0x000000ff
36 .byte 0x00, 0x00, 0xff, 0x00 36# define MASK1 0x0000ff00
37.Lmask3: 37# define MASK2 0x00ff0000
38 .byte 0x00, 0x00, 0x00, 0xff 38# define MASK3 0xff000000
39.end literal 39#endif
40 40
41# Register use 41# Register use
42# a0/ return address 42# a0/ return address
@@ -53,6 +53,7 @@
53# a11/ dst 53# a11/ dst
54# a12/ tmp 54# a12/ tmp
55 55
56.text
56.align 4 57.align 4
57.global __strncpy_user 58.global __strncpy_user
58.type __strncpy_user,@function 59.type __strncpy_user,@function
@@ -61,10 +62,10 @@ __strncpy_user:
61 # a2/ dst, a3/ src, a4/ len 62 # a2/ dst, a3/ src, a4/ len
62 mov a11, a2 # leave dst in return value register 63 mov a11, a2 # leave dst in return value register
63 beqz a4, .Lret # if len is zero 64 beqz a4, .Lret # if len is zero
64 l32r a5, .Lmask0 # mask for byte 0 65 movi a5, MASK0 # mask for byte 0
65 l32r a6, .Lmask1 # mask for byte 1 66 movi a6, MASK1 # mask for byte 1
66 l32r a7, .Lmask2 # mask for byte 2 67 movi a7, MASK2 # mask for byte 2
67 l32r a8, .Lmask3 # mask for byte 3 68 movi a8, MASK3 # mask for byte 3
68 bbsi.l a3, 0, .Lsrc1mod2 # if only 8-bit aligned 69 bbsi.l a3, 0, .Lsrc1mod2 # if only 8-bit aligned
69 bbsi.l a3, 1, .Lsrc2mod4 # if only 16-bit aligned 70 bbsi.l a3, 1, .Lsrc2mod4 # if only 16-bit aligned
70.Lsrcaligned: # return here when src is word-aligned 71.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 5e9c1e709b2e..ad3f616322ca 100644
--- a/arch/xtensa/lib/strnlen_user.S
+++ b/arch/xtensa/lib/strnlen_user.S
@@ -24,18 +24,18 @@
24/* 24/*
25 * size_t __strnlen_user(const char *s, size_t len) 25 * size_t __strnlen_user(const char *s, size_t len)
26 */ 26 */
27.text 27
28.begin literal 28#ifdef __XTENSA_EB__
29.align 4 29# define MASK0 0xff000000
30.Lmask0: 30# define MASK1 0x00ff0000
31 .byte 0xff, 0x00, 0x00, 0x00 31# define MASK2 0x0000ff00
32.Lmask1: 32# define MASK3 0x000000ff
33 .byte 0x00, 0xff, 0x00, 0x00 33#else
34.Lmask2: 34# define MASK0 0x000000ff
35 .byte 0x00, 0x00, 0xff, 0x00 35# define MASK1 0x0000ff00
36.Lmask3: 36# define MASK2 0x00ff0000
37 .byte 0x00, 0x00, 0x00, 0xff 37# define MASK3 0xff000000
38.end literal 38#endif
39 39
40# Register use: 40# Register use:
41# a2/ src 41# a2/ src
@@ -48,6 +48,7 @@
48# a9/ tmp 48# a9/ tmp
49# a10/ tmp 49# a10/ tmp
50 50
51.text
51.align 4 52.align 4
52.global __strnlen_user 53.global __strnlen_user
53.type __strnlen_user,@function 54.type __strnlen_user,@function
@@ -56,10 +57,10 @@ __strnlen_user:
56 # a2/ s, a3/ len 57 # a2/ s, a3/ len
57 addi a4, a2, -4 # because we overincrement at the end; 58 addi a4, a2, -4 # because we overincrement at the end;
58 # we compensate with load offsets of 4 59 # we compensate with load offsets of 4
59 l32r a5, .Lmask0 # mask for byte 0 60 movi a5, MASK0 # mask for byte 0
60 l32r a6, .Lmask1 # mask for byte 1 61 movi a6, MASK1 # mask for byte 1
61 l32r a7, .Lmask2 # mask for byte 2 62 movi a7, MASK2 # mask for byte 2
62 l32r a8, .Lmask3 # mask for byte 3 63 movi a8, MASK3 # mask for byte 3
63 bbsi.l a2, 0, .L1mod2 # if only 8-bit aligned 64 bbsi.l a2, 0, .L1mod2 # if only 8-bit aligned
64 bbsi.l a2, 1, .L2mod4 # if only 16-bit aligned 65 bbsi.l a2, 1, .L2mod4 # if only 16-bit aligned
65 66
diff --git a/arch/xtensa/mm/init.c b/arch/xtensa/mm/init.c
index e1ec2d1e8189..8415c76f11c2 100644
--- a/arch/xtensa/mm/init.c
+++ b/arch/xtensa/mm/init.c
@@ -205,7 +205,7 @@ void __init init_mmu (void)
205 /* Writing zeros to the <t>TLBCFG special registers ensure 205 /* Writing zeros to the <t>TLBCFG special registers ensure
206 * that valid values exist in the register. For existing 206 * that valid values exist in the register. For existing
207 * PGSZID<w> fields, zero selects the first element of the 207 * PGSZID<w> fields, zero selects the first element of the
208 * page-size array. For nonexistant PGSZID<w> fields, zero is 208 * page-size array. For nonexistent PGSZID<w> fields, zero is
209 * the best value to write. Also, when changing PGSZID<w> 209 * the best value to write. Also, when changing PGSZID<w>
210 * fields, the corresponding TLB must be flushed. 210 * fields, the corresponding TLB must be flushed.
211 */ 211 */
diff --git a/arch/xtensa/platform-iss/network.c b/arch/xtensa/platform-iss/network.c
index 4bfe333be229..f09962fa98c0 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)
473 netif_start_queue(dev); 473 netif_start_queue(dev);
474 474
475 /* clear buffer - it can happen that the host side of the interface 475 /* clear buffer - it can happen that the host side of the interface
476 * is full when we gethere. In this case, new data is never queued, 476 * is full when we get here. In this case, new data is never queued,
477 * SIGIOs never arrive, and the net never works. 477 * SIGIOs never arrive, and the net never works.
478 */ 478 */
479 while ((err = iss_net_rx(dev)) > 0) 479 while ((err = iss_net_rx(dev)) > 0)
diff --git a/include/asm-xtensa/bitops.h b/include/asm-xtensa/bitops.h
index d815649617aa..1c1e0d933eea 100644
--- a/include/asm-xtensa/bitops.h
+++ b/include/asm-xtensa/bitops.h
@@ -7,7 +7,7 @@
7 * License. See the file "COPYING" in the main directory of this archive 7 * License. See the file "COPYING" in the main directory of this archive
8 * for more details. 8 * for more details.
9 * 9 *
10 * Copyright (C) 2001 - 2005 Tensilica Inc. 10 * Copyright (C) 2001 - 2007 Tensilica Inc.
11 */ 11 */
12 12
13#ifndef _XTENSA_BITOPS_H 13#ifndef _XTENSA_BITOPS_H
@@ -31,53 +31,30 @@
31 31
32#if XCHAL_HAVE_NSA 32#if XCHAL_HAVE_NSA
33 33
34static __inline__ int __cntlz (unsigned long x) 34static inline unsigned long __cntlz (unsigned long x)
35{ 35{
36 int lz; 36 int lz;
37 asm ("nsau %0, %1" : "=r" (lz) : "r" (x)); 37 asm ("nsau %0, %1" : "=r" (lz) : "r" (x));
38 return 31 - lz; 38 return lz;
39} 39}
40 40
41#else
42
43static __inline__ int __cntlz (unsigned long x)
44{
45 unsigned long sum, x1, x2, x4, x8, x16;
46 x1 = x & 0xAAAAAAAA;
47 x2 = x & 0xCCCCCCCC;
48 x4 = x & 0xF0F0F0F0;
49 x8 = x & 0xFF00FF00;
50 x16 = x & 0xFFFF0000;
51 sum = x2 ? 2 : 0;
52 sum += (x16 != 0) * 16;
53 sum += (x8 != 0) * 8;
54 sum += (x4 != 0) * 4;
55 sum += (x1 != 0);
56
57 return sum;
58}
59
60#endif
61
62/* 41/*
63 * ffz: Find first zero in word. Undefined if no zero exists. 42 * ffz: Find first zero in word. Undefined if no zero exists.
64 * bit 0 is the LSB of addr; bit 32 is the LSB of (addr+1). 43 * bit 0 is the LSB of addr; bit 32 is the LSB of (addr+1).
65 */ 44 */
66 45
67static __inline__ int ffz(unsigned long x) 46static inline int ffz(unsigned long x)
68{ 47{
69 if ((x = ~x) == 0) 48 return 31 - __cntlz(~x & -~x);
70 return 32;
71 return __cntlz(x & -x);
72} 49}
73 50
74/* 51/*
75 * __ffs: Find first bit set in word. Return 0 for bit 0 52 * __ffs: Find first bit set in word. Return 0 for bit 0
76 */ 53 */
77 54
78static __inline__ int __ffs(unsigned long x) 55static inline int __ffs(unsigned long x)
79{ 56{
80 return __cntlz(x & -x); 57 return 31 - __cntlz(x & -x);
81} 58}
82 59
83/* 60/*
@@ -86,9 +63,9 @@ static __inline__ int __ffs(unsigned long x)
86 * differs in spirit from the above ffz (man ffs). 63 * differs in spirit from the above ffz (man ffs).
87 */ 64 */
88 65
89static __inline__ int ffs(unsigned long x) 66static inline int ffs(unsigned long x)
90{ 67{
91 return __cntlz(x & -x) + 1; 68 return 32 - __cntlz(x & -x);
92} 69}
93 70
94/* 71/*
@@ -96,20 +73,36 @@ static __inline__ int ffs(unsigned long x)
96 * Note fls(0) = 0, fls(1) = 1, fls(0x80000000) = 32. 73 * Note fls(0) = 0, fls(1) = 1, fls(0x80000000) = 32.
97 */ 74 */
98 75
99static __inline__ int fls (unsigned int x) 76static inline int fls (unsigned int x)
100{ 77{
101 return __cntlz(x); 78 return 32 - __cntlz(x);
102} 79}
80
81#else
82
83/* Use the generic implementation if we don't have the nsa/nsau instructions. */
84
85# include <asm-generic/bitops/ffs.h>
86# include <asm-generic/bitops/__ffs.h>
87# include <asm-generic/bitops/ffz.h>
88# include <asm-generic/bitops/fls.h>
89
90#endif
91
103#include <asm-generic/bitops/fls64.h> 92#include <asm-generic/bitops/fls64.h>
104#include <asm-generic/bitops/find.h> 93#include <asm-generic/bitops/find.h>
105#include <asm-generic/bitops/ext2-non-atomic.h> 94#include <asm-generic/bitops/ext2-non-atomic.h>
106 95
107#ifdef __XTENSA_EL__ 96#ifdef __XTENSA_EL__
108# define ext2_set_bit_atomic(lock,nr,addr) test_and_set_bit((nr),(addr)) 97# define ext2_set_bit_atomic(lock,nr,addr) \
109# define ext2_clear_bit_atomic(lock,nr,addr) test_and_clear_bit((nr),(addr)) 98 test_and_set_bit((nr), (unsigned long*)(addr))
99# define ext2_clear_bit_atomic(lock,nr,addr) \
100 test_and_clear_bit((nr), (unsigned long*)(addr))
110#elif defined(__XTENSA_EB__) 101#elif defined(__XTENSA_EB__)
111# define ext2_set_bit_atomic(lock,nr,addr) test_and_set_bit((nr) ^ 0x18, (addr)) 102# define ext2_set_bit_atomic(lock,nr,addr) \
112# define ext2_clear_bit_atomic(lock,nr,addr) test_and_clear_bit((nr)^0x18,(addr)) 103 test_and_set_bit((nr) ^ 0x18, (unsigned long*)(addr))
104# define ext2_clear_bit_atomic(lock,nr,addr) \
105 test_and_clear_bit((nr) ^ 0x18, (unsigned long*)(addr))
113#else 106#else
114# error processor byte order undefined! 107# error processor byte order undefined!
115#endif 108#endif
diff --git a/include/asm-xtensa/byteorder.h b/include/asm-xtensa/byteorder.h
index 0f540a5f4c01..765edf17a9a4 100644
--- a/include/asm-xtensa/byteorder.h
+++ b/include/asm-xtensa/byteorder.h
@@ -12,6 +12,7 @@
12#define _XTENSA_BYTEORDER_H 12#define _XTENSA_BYTEORDER_H
13 13
14#include <asm/types.h> 14#include <asm/types.h>
15#include <linux/compiler.h>
15 16
16static __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 x) 17static __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 x)
17{ 18{
@@ -78,4 +79,4 @@ static __inline__ __attribute_const__ __u16 ___arch__swab16(__u16 x)
78# error processor byte order undefined! 79# error processor byte order undefined!
79#endif 80#endif
80 81
81#endif /* __ASM_XTENSA_BYTEORDER_H */ 82#endif /* _XTENSA_BYTEORDER_H */
diff --git a/include/asm-xtensa/coprocessor.h b/include/asm-xtensa/coprocessor.h
index bd09ec02d57f..aa2121034558 100644
--- a/include/asm-xtensa/coprocessor.h
+++ b/include/asm-xtensa/coprocessor.h
@@ -64,6 +64,7 @@ typedef struct {
64# define COPROCESSOR_INFO_SIZE 8 64# define COPROCESSOR_INFO_SIZE 8
65# endif 65# endif
66#endif 66#endif
67#endif /* XCHAL_HAVE_CP */
67 68
68 69
69#ifndef __ASSEMBLY__ 70#ifndef __ASSEMBLY__
@@ -74,8 +75,11 @@ extern void save_coprocessor_registers(void*, int);
74# else 75# else
75# define release_coprocessors(task) 76# define release_coprocessors(task)
76# endif 77# endif
77#endif
78 78
79#endif 79typedef unsigned char cp_state_t[XTENSA_CP_EXTRA_SIZE]
80 __attribute__ ((aligned (XTENSA_CP_EXTRA_ALIGN)));
81
82#endif /* !__ASSEMBLY__ */
83
80 84
81#endif /* _XTENSA_COPROCESSOR_H */ 85#endif /* _XTENSA_COPROCESSOR_H */
diff --git a/include/asm-xtensa/div64.h b/include/asm-xtensa/div64.h
index 20965e3af1dd..f35678cb0a9b 100644
--- a/include/asm-xtensa/div64.h
+++ b/include/asm-xtensa/div64.h
@@ -5,21 +5,12 @@
5 * License. See the file "COPYING" in the main directory of this archive 5 * License. See the file "COPYING" in the main directory of this archive
6 * for more details. 6 * for more details.
7 * 7 *
8 * Copyright (C) 2001 - 2005 Tensilica Inc. 8 * Copyright (C) 2001 - 2007 Tensilica Inc.
9 */ 9 */
10 10
11#ifndef _XTENSA_DIV64_H 11#ifndef _XTENSA_DIV64_H
12#define _XTENSA_DIV64_H 12#define _XTENSA_DIV64_H
13 13
14#include <linux/types.h> 14#include <asm-generic/div64.h>
15 15
16#define do_div(n,base) ({ \ 16#endif /* _XTENSA_DIV64_H */
17 int __res = n % ((unsigned int) base); \
18 n /= (unsigned int) base; \
19 __res; })
20
21static inline uint64_t div64_64(uint64_t dividend, uint64_t divisor)
22{
23 return dividend / divisor;
24}
25#endif
diff --git a/include/asm-xtensa/elf.h b/include/asm-xtensa/elf.h
index f0f9fd8560a5..1569b53cec91 100644
--- a/include/asm-xtensa/elf.h
+++ b/include/asm-xtensa/elf.h
@@ -13,7 +13,6 @@
13#ifndef _XTENSA_ELF_H 13#ifndef _XTENSA_ELF_H
14#define _XTENSA_ELF_H 14#define _XTENSA_ELF_H
15 15
16#include <asm/variant/core.h>
17#include <asm/ptrace.h> 16#include <asm/ptrace.h>
18 17
19/* Xtensa processor ELF architecture-magic number */ 18/* Xtensa processor ELF architecture-magic number */
@@ -49,7 +48,7 @@ typedef struct {
49 elf_greg_t lcount; 48 elf_greg_t lcount;
50 elf_greg_t sar; 49 elf_greg_t sar;
51 elf_greg_t syscall; 50 elf_greg_t syscall;
52 elf_greg_t ar[XCHAL_NUM_AREGS]; 51 elf_greg_t ar[64];
53} xtensa_gregset_t; 52} xtensa_gregset_t;
54 53
55#define ELF_NGREG (sizeof(xtensa_gregset_t) / sizeof(elf_greg_t)) 54#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 0609fc691b72..46ab12db5739 100644
--- a/include/asm-xtensa/fcntl.h
+++ b/include/asm-xtensa/fcntl.h
@@ -1,99 +1 @@
1/* #include <asm-generic/fcntl.h>
2 * include/asm-xtensa/fcntl.h
3 *
4 * This file is subject to the terms and conditions of the GNU General Public
5 * License. See the file "COPYING" in the main directory of this archive
6 * for more details.
7 *
8 * Copyright (C) 1995, 1996, 1997, 1998 by Ralf Baechle
9 * Copyright (C) 2001 - 2005 Tensilica Inc.
10 */
11
12#ifndef _XTENSA_FCNTL_H
13#define _XTENSA_FCNTL_H
14
15/* open/fcntl - O_SYNC is only implemented on blocks devices and on files
16 located on an ext2 file system */
17#define O_ACCMODE 0003
18#define O_RDONLY 00
19#define O_WRONLY 01
20#define O_RDWR 02
21#define O_CREAT 0100 /* not fcntl */
22#define O_EXCL 0200 /* not fcntl */
23#define O_NOCTTY 0400 /* not fcntl */
24#define O_TRUNC 01000 /* not fcntl */
25#define O_APPEND 02000
26#define O_NONBLOCK 04000
27#define O_NDELAY O_NONBLOCK
28#define O_SYNC 010000
29#define FASYNC 020000 /* fcntl, for BSD compatibility */
30#define O_DIRECT 040000 /* direct disk access hint */
31#define O_LARGEFILE 0100000
32#define O_DIRECTORY 0200000 /* must be a directory */
33#define O_NOFOLLOW 0400000 /* don't follow links */
34#define O_NOATIME 01000000
35
36#define F_DUPFD 0 /* dup */
37#define F_GETFD 1 /* get close_on_exec */
38#define F_SETFD 2 /* set/clear close_on_exec */
39#define F_GETFL 3 /* get file->f_flags */
40#define F_SETFL 4 /* set file->f_flags */
41#define F_GETLK 5
42#define F_SETLK 6
43#define F_SETLKW 7
44
45#define F_SETOWN 8 /* for sockets. */
46#define F_GETOWN 9 /* for sockets. */
47#define F_SETSIG 10 /* for sockets. */
48#define F_GETSIG 11 /* for sockets. */
49
50#define F_GETLK64 12 /* using 'struct flock64' */
51#define F_SETLK64 13
52#define F_SETLKW64 14
53
54/* for F_[GET|SET]FL */
55#define FD_CLOEXEC 1 /* actually anything with low bit set goes */
56
57/* for posix fcntl() and lockf() */
58#define F_RDLCK 0
59#define F_WRLCK 1
60#define F_UNLCK 2
61
62/* for old implementation of bsd flock () */
63#define F_EXLCK 4 /* or 3 */
64#define F_SHLCK 8 /* or 4 */
65
66/* for leases */
67#define F_INPROGRESS 16
68
69/* operations for bsd flock(), also used by the kernel implementation */
70#define LOCK_SH 1 /* shared lock */
71#define LOCK_EX 2 /* exclusive lock */
72#define LOCK_NB 4 /* or'd with one of the above to prevent
73 blocking */
74#define LOCK_UN 8 /* remove lock */
75
76#define LOCK_MAND 32 /* This is a mandatory flock */
77#define LOCK_READ 64 /* ... Which allows concurrent read operations */
78#define LOCK_WRITE 128 /* ... Which allows concurrent write operations */
79#define LOCK_RW 192 /* ... Which allows concurrent read & write ops */
80
81struct flock {
82 short l_type;
83 short l_whence;
84 off_t l_start;
85 off_t l_len;
86 pid_t l_pid;
87};
88
89struct flock64 {
90 short l_type;
91 short l_whence;
92 loff_t l_start;
93 loff_t l_len;
94 pid_t l_pid;
95};
96
97#define F_LINUX_SPECIFIC_BASE 1024
98
99#endif /* _XTENSA_FCNTL_H */
diff --git a/include/asm-xtensa/mmu_context.h b/include/asm-xtensa/mmu_context.h
index 92f948392ebc..c0fd8e5b4513 100644
--- a/include/asm-xtensa/mmu_context.h
+++ b/include/asm-xtensa/mmu_context.h
@@ -14,6 +14,7 @@
14#define _XTENSA_MMU_CONTEXT_H 14#define _XTENSA_MMU_CONTEXT_H
15 15
16#include <linux/stringify.h> 16#include <linux/stringify.h>
17#include <linux/sched.h>
17 18
18#include <asm/pgtable.h> 19#include <asm/pgtable.h>
19#include <asm/cacheflush.h> 20#include <asm/cacheflush.h>
diff --git a/include/asm-xtensa/page.h b/include/asm-xtensa/page.h
index c631d006194b..1213cde75438 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);
131#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \ 131#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
132 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) 132 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
133 133
134#endif /* __KERNEL__ */
135#include <asm-generic/memory_model.h> 134#include <asm-generic/memory_model.h>
135#endif /* __KERNEL__ */
136#endif /* _XTENSA_PAGE_H */ 136#endif /* _XTENSA_PAGE_H */
diff --git a/include/asm-xtensa/param.h b/include/asm-xtensa/param.h
index 6f281392e3f8..ce3a336cad07 100644
--- a/include/asm-xtensa/param.h
+++ b/include/asm-xtensa/param.h
@@ -11,15 +11,13 @@
11#ifndef _XTENSA_PARAM_H 11#ifndef _XTENSA_PARAM_H
12#define _XTENSA_PARAM_H 12#define _XTENSA_PARAM_H
13 13
14#include <asm/variant/core.h>
15
16#ifdef __KERNEL__ 14#ifdef __KERNEL__
17# define HZ 100 /* internal timer frequency */ 15# define HZ 100 /* internal timer frequency */
18# define USER_HZ 100 /* for user interfaces in "ticks" */ 16# define USER_HZ 100 /* for user interfaces in "ticks" */
19# define CLOCKS_PER_SEC (USER_HZ) /* frequnzy at which times() counts */ 17# define CLOCKS_PER_SEC (USER_HZ) /* frequnzy at which times() counts */
20#endif 18#endif
21 19
22#define EXEC_PAGESIZE (1 << XCHAL_MMU_MIN_PTE_PAGE_SIZE) 20#define EXEC_PAGESIZE 4096
23 21
24#ifndef NGROUPS 22#ifndef NGROUPS
25#define NGROUPS 32 23#define NGROUPS 32
diff --git a/include/asm-xtensa/ptrace.h b/include/asm-xtensa/ptrace.h
index 1b7fe363fad1..77ff02d307bb 100644
--- a/include/asm-xtensa/ptrace.h
+++ b/include/asm-xtensa/ptrace.h
@@ -11,8 +11,6 @@
11#ifndef _XTENSA_PTRACE_H 11#ifndef _XTENSA_PTRACE_H
12#define _XTENSA_PTRACE_H 12#define _XTENSA_PTRACE_H
13 13
14#include <asm/variant/core.h>
15
16/* 14/*
17 * Kernel stack 15 * Kernel stack
18 * 16 *
@@ -101,7 +99,8 @@ struct pt_regs {
101 unsigned long windowbase; /* 48 */ 99 unsigned long windowbase; /* 48 */
102 unsigned long windowstart; /* 52 */ 100 unsigned long windowstart; /* 52 */
103 unsigned long syscall; /* 56 */ 101 unsigned long syscall; /* 56 */
104 int reserved[2]; /* 64 */ 102 unsigned long icountlevel; /* 60 */
103 int reserved[1]; /* 64 */
105 104
106 /* Make sure the areg field is 16 bytes aligned. */ 105 /* Make sure the areg field is 16 bytes aligned. */
107 int align[0] __attribute__ ((aligned(16))); 106 int align[0] __attribute__ ((aligned(16)));
@@ -113,6 +112,9 @@ struct pt_regs {
113}; 112};
114 113
115#ifdef __KERNEL__ 114#ifdef __KERNEL__
115
116#include <asm/variant/core.h>
117
116# define task_pt_regs(tsk) ((struct pt_regs*) \ 118# define task_pt_regs(tsk) ((struct pt_regs*) \
117 (task_stack_page(tsk) + KERNEL_STACK_SIZE - (XCHAL_NUM_AREGS-16)*4) - 1) 119 (task_stack_page(tsk) + KERNEL_STACK_SIZE - (XCHAL_NUM_AREGS-16)*4) - 1)
118# define user_mode(regs) (((regs)->ps & 0x00000020)!=0) 120# define user_mode(regs) (((regs)->ps & 0x00000020)!=0)
diff --git a/include/asm-xtensa/shmparam.h b/include/asm-xtensa/shmparam.h
index d3b65bfa71c3..c8cc16c3da9e 100644
--- a/include/asm-xtensa/shmparam.h
+++ b/include/asm-xtensa/shmparam.h
@@ -9,8 +9,6 @@
9#ifndef _XTENSA_SHMPARAM_H 9#ifndef _XTENSA_SHMPARAM_H
10#define _XTENSA_SHMPARAM_H 10#define _XTENSA_SHMPARAM_H
11 11
12#include <asm/processor.h>
13
14/* 12/*
15 * Xtensa can have variable size caches, and if 13 * Xtensa can have variable size caches, and if
16 * the size of single way is larger than the page size, 14 * 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 a75177291418..e3381cee5059 100644
--- a/include/asm-xtensa/sigcontext.h
+++ b/include/asm-xtensa/sigcontext.h
@@ -5,21 +5,12 @@
5 * License. See the file "COPYING" in the main directory of this archive 5 * License. See the file "COPYING" in the main directory of this archive
6 * for more details. 6 * for more details.
7 * 7 *
8 * Copyright (C) 2001 - 2003 Tensilica Inc. 8 * Copyright (C) 2001 - 2007 Tensilica Inc.
9 */ 9 */
10 10
11#ifndef _XTENSA_SIGCONTEXT_H 11#ifndef _XTENSA_SIGCONTEXT_H
12#define _XTENSA_SIGCONTEXT_H 12#define _XTENSA_SIGCONTEXT_H
13 13
14#define _ASMLANGUAGE
15#include <asm/processor.h>
16#include <asm/coprocessor.h>
17
18
19struct _cpstate {
20 unsigned char _cpstate[XTENSA_CP_EXTRA_SIZE];
21} __attribute__ ((aligned (XTENSA_CP_EXTRA_ALIGN)));
22
23 14
24struct sigcontext { 15struct sigcontext {
25 unsigned long oldmask; 16 unsigned long oldmask;
@@ -27,18 +18,13 @@ struct sigcontext {
27 /* CPU registers */ 18 /* CPU registers */
28 unsigned long sc_pc; 19 unsigned long sc_pc;
29 unsigned long sc_ps; 20 unsigned long sc_ps;
30 unsigned long sc_wmask;
31 unsigned long sc_windowbase;
32 unsigned long sc_windowstart;
33 unsigned long sc_lbeg; 21 unsigned long sc_lbeg;
34 unsigned long sc_lend; 22 unsigned long sc_lend;
35 unsigned long sc_lcount; 23 unsigned long sc_lcount;
36 unsigned long sc_sar; 24 unsigned long sc_sar;
37 unsigned long sc_depc; 25 unsigned long sc_acclo;
38 unsigned long sc_dareg0; 26 unsigned long sc_acchi;
39 unsigned long sc_treg[4]; 27 unsigned long sc_a[16];
40 unsigned long sc_areg[XCHAL_NUM_AREGS];
41 struct _cpstate *sc_cpstate;
42}; 28};
43 29
44#endif /* __ASM_XTENSA_SIGCONTEXT_H */ 30#endif /* _XTENSA_SIGCONTEXT_H */
diff --git a/include/asm-xtensa/thread_info.h b/include/asm-xtensa/thread_info.h
index 5ae34ab71597..3fa29799b435 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)
116#define TIF_SINGLESTEP 4 /* restore singlestep on return to user mode */ 116#define TIF_SINGLESTEP 4 /* restore singlestep on return to user mode */
117#define TIF_IRET 5 /* return with iret */ 117#define TIF_IRET 5 /* return with iret */
118#define TIF_MEMDIE 6 118#define TIF_MEMDIE 6
119#define TIF_RESTORE_SIGMASK 7 /* restore signal mask in do_signal() */
119#define TIF_POLLING_NRFLAG 16 /* true if poll_idle() is polling TIF_NEED_RESCHED */ 120#define TIF_POLLING_NRFLAG 16 /* true if poll_idle() is polling TIF_NEED_RESCHED */
120 121
121#define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE) 122#define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE)
@@ -125,6 +126,7 @@ static inline struct thread_info *current_thread_info(void)
125#define _TIF_SINGLESTEP (1<<TIF_SINGLESTEP) 126#define _TIF_SINGLESTEP (1<<TIF_SINGLESTEP)
126#define _TIF_IRET (1<<TIF_IRET) 127#define _TIF_IRET (1<<TIF_IRET)
127#define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG) 128#define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG)
129#define _TIF_RESTORE_SIGMASK (1<<TIF_RESTORE_SIGMASK)
128 130
129#define _TIF_WORK_MASK 0x0000FFFE /* work to do on interrupt/exception return */ 131#define _TIF_WORK_MASK 0x0000FFFE /* work to do on interrupt/exception return */
130#define _TIF_ALLWORK_MASK 0x0000FFFF /* work to do on any return to u-space */ 132#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 8a7fb6964ce1..9bd34024431c 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)
485__SYSCALL(218, sys_sched_rr_get_interval, 2) 485__SYSCALL(218, sys_sched_rr_get_interval, 2)
486#define __NR_sched_yield 219 486#define __NR_sched_yield 219
487__SYSCALL(219, sys_sched_yield, 0) 487__SYSCALL(219, sys_sched_yield, 0)
488#define __NR_sigreturn 222 488#define __NR_available222 222
489__SYSCALL(222, xtensa_sigreturn, 0) 489__SYSCALL(222, sys_ni_syscall, 0)
490 490
491/* Signal Handling */ 491/* Signal Handling */
492 492