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authorRichard Purdie <richard@openedhand.com>2006-08-26 15:15:59 +0000
committerRichard Purdie <richard@openedhand.com>2006-08-26 15:15:59 +0000
commit6f6b9313074ca21251e115ee62f7522de30cf889 (patch)
tree66dd3b63ff7a0651ad7d188b739171b92b074949 /meta/packages
parent5c2171b4a084f4e409992b6e8893a80f16d09c8c (diff)
downloadpoky-6f6b9313074ca21251e115ee62f7522de30cf889.tar.gz
qemu: Add nptl patch to allow EABI binary locale generation (from scratchbox)
git-svn-id: https://svn.o-hand.com/repos/poky/trunk@642 311d38ba-8fff-0310-9ca6-ca027cbcb966
Diffstat (limited to 'meta/packages')
-rw-r--r--meta/packages/qemu/files/arm_nptl.patch857
-rw-r--r--meta/packages/qemu/qemu_cvs.bb3
2 files changed, 859 insertions, 1 deletions
diff --git a/meta/packages/qemu/files/arm_nptl.patch b/meta/packages/qemu/files/arm_nptl.patch
new file mode 100644
index 0000000000..958c27e5e1
--- /dev/null
+++ b/meta/packages/qemu/files/arm_nptl.patch
@@ -0,0 +1,857 @@
1Index: qemu/configure
2===================================================================
3--- qemu.orig/configure 2006-08-14 22:09:39.000000000 +0100
4+++ qemu/configure 2006-08-14 22:38:54.000000000 +0100
5@@ -96,6 +96,7 @@
6 user="no"
7 build_docs="no"
8 uname_release=""
9+nptl="yes"
10
11 # OS specific
12 targetos=`uname -s`
13@@ -240,6 +241,8 @@
14 ;;
15 --enable-uname-release=*) uname_release="$optarg"
16 ;;
17+ --disable-nptl) nptl="no"
18+ ;;
19 esac
20 done
21
22@@ -438,6 +441,23 @@
23 fi
24 fi
25
26+# check NPTL support
27+cat > $TMPC <<EOF
28+#include <sched.h>
29+void foo()
30+{
31+#ifndef CLONE_SETTLS
32+#error bork
33+#endif
34+}
35+EOF
36+
37+if $cc -c -o $TMPO $TMPC 2> /dev/null ; then
38+ :
39+else
40+ nptl="no"
41+fi
42+
43 ##########################################
44 # SDL probe
45
46@@ -556,6 +576,7 @@
47 fi
48 echo "FMOD support $fmod $fmod_support"
49 echo "kqemu support $kqemu"
50+echo "NPTL support $nptl"
51 echo "Documentation $build_docs"
52 [ ! -z "$uname_release" ] && \
53 echo "uname -r $uname_release"
54@@ -864,6 +885,14 @@
55 echo "SDL_CFLAGS=`$sdl_config --cflags`" >> $config_mak
56 fi
57 fi
58+else
59+ if test "$nptl" = "yes" ; then
60+ case "$target_cpu" in
61+ arm | armeb)
62+ echo "#define USE_NPTL 1" >> $config_h
63+ ;;
64+ esac
65+ fi
66 fi
67
68 if test "$cocoa" = "yes" ; then
69Index: qemu/exec-all.h
70===================================================================
71--- qemu.orig/exec-all.h 2006-05-26 18:10:52.000000000 +0100
72+++ qemu/exec-all.h 2006-08-14 22:37:29.000000000 +0100
73@@ -347,163 +347,7 @@
74 extern CPUReadMemoryFunc *io_mem_read[IO_MEM_NB_ENTRIES][4];
75 extern void *io_mem_opaque[IO_MEM_NB_ENTRIES];
76
77-#ifdef __powerpc__
78-static inline int testandset (int *p)
79-{
80- int ret;
81- __asm__ __volatile__ (
82- "0: lwarx %0,0,%1\n"
83- " xor. %0,%3,%0\n"
84- " bne 1f\n"
85- " stwcx. %2,0,%1\n"
86- " bne- 0b\n"
87- "1: "
88- : "=&r" (ret)
89- : "r" (p), "r" (1), "r" (0)
90- : "cr0", "memory");
91- return ret;
92-}
93-#endif
94-
95-#ifdef __i386__
96-static inline int testandset (int *p)
97-{
98- long int readval = 0;
99-
100- __asm__ __volatile__ ("lock; cmpxchgl %2, %0"
101- : "+m" (*p), "+a" (readval)
102- : "r" (1)
103- : "cc");
104- return readval;
105-}
106-#endif
107-
108-#ifdef __x86_64__
109-static inline int testandset (int *p)
110-{
111- long int readval = 0;
112-
113- __asm__ __volatile__ ("lock; cmpxchgl %2, %0"
114- : "+m" (*p), "+a" (readval)
115- : "r" (1)
116- : "cc");
117- return readval;
118-}
119-#endif
120-
121-#ifdef __s390__
122-static inline int testandset (int *p)
123-{
124- int ret;
125-
126- __asm__ __volatile__ ("0: cs %0,%1,0(%2)\n"
127- " jl 0b"
128- : "=&d" (ret)
129- : "r" (1), "a" (p), "0" (*p)
130- : "cc", "memory" );
131- return ret;
132-}
133-#endif
134-
135-#ifdef __alpha__
136-static inline int testandset (int *p)
137-{
138- int ret;
139- unsigned long one;
140-
141- __asm__ __volatile__ ("0: mov 1,%2\n"
142- " ldl_l %0,%1\n"
143- " stl_c %2,%1\n"
144- " beq %2,1f\n"
145- ".subsection 2\n"
146- "1: br 0b\n"
147- ".previous"
148- : "=r" (ret), "=m" (*p), "=r" (one)
149- : "m" (*p));
150- return ret;
151-}
152-#endif
153-
154-#ifdef __sparc__
155-static inline int testandset (int *p)
156-{
157- int ret;
158-
159- __asm__ __volatile__("ldstub [%1], %0"
160- : "=r" (ret)
161- : "r" (p)
162- : "memory");
163-
164- return (ret ? 1 : 0);
165-}
166-#endif
167-
168-#ifdef __arm__
169-static inline int testandset (int *spinlock)
170-{
171- register unsigned int ret;
172- __asm__ __volatile__("swp %0, %1, [%2]"
173- : "=r"(ret)
174- : "0"(1), "r"(spinlock));
175-
176- return ret;
177-}
178-#endif
179-
180-#ifdef __mc68000
181-static inline int testandset (int *p)
182-{
183- char ret;
184- __asm__ __volatile__("tas %1; sne %0"
185- : "=r" (ret)
186- : "m" (p)
187- : "cc","memory");
188- return ret;
189-}
190-#endif
191-
192-#ifdef __ia64
193-#include <ia64intrin.h>
194-
195-static inline int testandset (int *p)
196-{
197- return __sync_lock_test_and_set (p, 1);
198-}
199-#endif
200-
201-typedef int spinlock_t;
202-
203-#define SPIN_LOCK_UNLOCKED 0
204-
205-#if defined(CONFIG_USER_ONLY)
206-static inline void spin_lock(spinlock_t *lock)
207-{
208- while (testandset(lock));
209-}
210-
211-static inline void spin_unlock(spinlock_t *lock)
212-{
213- *lock = 0;
214-}
215-
216-static inline int spin_trylock(spinlock_t *lock)
217-{
218- return !testandset(lock);
219-}
220-#else
221-static inline void spin_lock(spinlock_t *lock)
222-{
223-}
224-
225-static inline void spin_unlock(spinlock_t *lock)
226-{
227-}
228-
229-static inline int spin_trylock(spinlock_t *lock)
230-{
231- return 1;
232-}
233-#endif
234+#include "qemu_spinlock.h"
235
236 extern spinlock_t tb_lock;
237
238Index: qemu/linux-user/arm/syscall.h
239===================================================================
240--- qemu.orig/linux-user/arm/syscall.h 2005-04-27 21:11:21.000000000 +0100
241+++ qemu/linux-user/arm/syscall.h 2006-08-14 22:37:29.000000000 +0100
242@@ -28,7 +28,9 @@
243 #define ARM_SYSCALL_BASE 0x900000
244 #define ARM_THUMB_SYSCALL 0
245
246-#define ARM_NR_cacheflush (ARM_SYSCALL_BASE + 0xf0000 + 2)
247+#define ARM_NR_BASE 0xf0000
248+#define ARM_NR_cacheflush (ARM_NR_BASE + 2)
249+#define ARM_NR_set_tls (ARM_NR_BASE + 5)
250
251 #define ARM_NR_semihosting 0x123456
252 #define ARM_NR_thumb_semihosting 0xAB
253Index: qemu/linux-user/main.c
254===================================================================
255--- qemu.orig/linux-user/main.c 2006-05-26 18:11:01.000000000 +0100
256+++ qemu/linux-user/main.c 2006-08-14 22:37:29.000000000 +0100
257@@ -331,6 +331,50 @@
258 }
259 }
260
261+/* Handle a jump to the kernel code page. */
262+static int
263+do_kernel_trap(CPUARMState *env)
264+{
265+ uint32_t addr;
266+ uint32_t *ptr;
267+ uint32_t cpsr;
268+
269+ switch (env->regs[15]) {
270+ case 0xffff0fc0: /* __kernel_cmpxchg */
271+ /* XXX: This only works between threads, not between processes.
272+ Use native atomic operations. */
273+ /* ??? This probably breaks horribly if the access segfaults. */
274+ cpu_lock();
275+ ptr = (uint32_t *)env->regs[2];
276+ cpsr = cpsr_read(env);
277+ if (*ptr == env->regs[0]) {
278+ *ptr = env->regs[1];
279+ env->regs[0] = 0;
280+ cpsr |= CPSR_C;
281+ } else {
282+ env->regs[0] = -1;
283+ cpsr &= ~CPSR_C;
284+ }
285+ cpsr_write(env, cpsr, CPSR_C);
286+ cpu_unlock();
287+ break;
288+ case 0xffff0fe0: /* __kernel_get_tls */
289+ env->regs[0] = env->cp15.c13_tls;
290+ break;
291+ default:
292+ return 1;
293+ }
294+ /* Jump back to the caller. */
295+ addr = env->regs[14];
296+ if (addr & 1) {
297+ env->thumb = 1;
298+ addr &= ~1;
299+ }
300+ env->regs[15] = addr;
301+
302+ return 0;
303+}
304+
305 void cpu_loop(CPUARMState *env)
306 {
307 int trapnr;
308@@ -387,10 +431,8 @@
309 }
310 }
311
312- if (n == ARM_NR_cacheflush) {
313- arm_cache_flush(env->regs[0], env->regs[1]);
314- } else if (n == ARM_NR_semihosting
315- || n == ARM_NR_thumb_semihosting) {
316+ if (n == ARM_NR_semihosting
317+ || n == ARM_NR_thumb_semihosting) {
318 env->regs[0] = do_arm_semihosting (env);
319 } else if (n == 0 || n >= ARM_SYSCALL_BASE
320 || (env->thumb && n == ARM_THUMB_SYSCALL)) {
321@@ -401,14 +443,34 @@
322 n -= ARM_SYSCALL_BASE;
323 env->eabi = 0;
324 }
325- env->regs[0] = do_syscall(env,
326- n,
327- env->regs[0],
328- env->regs[1],
329- env->regs[2],
330- env->regs[3],
331- env->regs[4],
332- env->regs[5]);
333+ if ( n > ARM_NR_BASE) {
334+ switch (n)
335+ {
336+ case ARM_NR_cacheflush:
337+ arm_cache_flush(env->regs[0], env->regs[1]);
338+ break;
339+#ifdef USE_NPTL
340+ case ARM_NR_set_tls:
341+ cpu_set_tls(env, env->regs[0]);
342+ env->regs[0] = 0;
343+ break;
344+#endif
345+ default:
346+ printf ("Error: Bad syscall: %x\n", n);
347+ goto error;
348+ }
349+ }
350+ else
351+ {
352+ env->regs[0] = do_syscall(env,
353+ n,
354+ env->regs[0],
355+ env->regs[1],
356+ env->regs[2],
357+ env->regs[3],
358+ env->regs[4],
359+ env->regs[5]);
360+ }
361 } else {
362 goto error;
363 }
364@@ -447,6 +509,10 @@
365 }
366 }
367 break;
368+ case EXCP_KERNEL_TRAP:
369+ if (do_kernel_trap(env))
370+ goto error;
371+ break;
372 default:
373 error:
374 fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
375@@ -1649,6 +1715,10 @@
376 ts->heap_base = info->brk;
377 /* This will be filled in on the first SYS_HEAPINFO call. */
378 ts->heap_limit = 0;
379+ /* Register the magic kernel code page. The cpu will generate a
380+ special exception when it tries to execute code here. We can't
381+ put real code here because it may be in use by the host kernel. */
382+ page_set_flags(0xffff0000, 0xffff0fff, 0);
383 }
384 #elif defined(TARGET_SPARC)
385 {
386Index: qemu/linux-user/qemu.h
387===================================================================
388--- qemu.orig/linux-user/qemu.h 2006-05-26 18:11:01.000000000 +0100
389+++ qemu/linux-user/qemu.h 2006-08-14 22:37:29.000000000 +0100
390@@ -76,6 +76,9 @@
391 uint32_t v86mask;
392 #endif
393 int used; /* non zero if used */
394+#ifdef USE_NPTL
395+ uint32_t *child_tidptr;
396+#endif
397 uint8_t stack[0];
398 } __attribute__((aligned(16))) TaskState;
399
400Index: qemu/linux-user/syscall.c
401===================================================================
402--- qemu.orig/linux-user/syscall.c 2006-05-26 18:11:01.000000000 +0100
403+++ qemu/linux-user/syscall.c 2006-08-14 22:44:47.000000000 +0100
404@@ -66,9 +66,18 @@
405 #include <linux/kd.h>
406
407 #include "qemu.h"
408+#include "qemu_spinlock.h"
409
410 //#define DEBUG
411
412+#ifdef USE_NPTL
413+#define CLONE_NPTL_FLAGS2 (CLONE_SETTLS | \
414+ CLONE_PARENT_SETTID | CLONE_CHILD_SETTID | CLONE_CHILD_CLEARTID)
415+#else
416+/* XXX: Hardcode the above values. */
417+#define CLONE_NPTL_FLAGS2 0
418+#endif
419+
420 #if defined(TARGET_I386) || defined(TARGET_ARM) || defined(TARGET_SPARC)
421 /* 16 bit uid wrappers emulation */
422 #define USE_UID16
423@@ -1569,20 +1578,38 @@
424 thread/process */
425 #define NEW_STACK_SIZE 8192
426
427+#ifdef USE_NPTL
428+static spinlock_t nptl_lock = SPIN_LOCK_UNLOCKED;
429+#endif
430+
431 static int clone_func(void *arg)
432 {
433 CPUState *env = arg;
434+#ifdef HAVE_NPTL
435+ /* Wait until the parent has finshed initializing the tls state. */
436+ while (!spin_trylock(&nptl_lock))
437+ usleep(1);
438+ spin_unlock(&nptl_lock);
439+#endif
440 cpu_loop(env);
441 /* never exits */
442 return 0;
443 }
444
445-int do_fork(CPUState *env, unsigned int flags, unsigned long newsp)
446+int do_fork(CPUState *env, unsigned int flags, unsigned long newsp,
447+ uint32_t *parent_tidptr, void *newtls,
448+ uint32_t *child_tidptr)
449 {
450 int ret;
451 TaskState *ts;
452 uint8_t *new_stack;
453 CPUState *new_env;
454+#ifdef USE_NPTL
455+ unsigned int nptl_flags;
456+
457+ if (flags & CLONE_PARENT_SETTID)
458+ *parent_tidptr = gettid();
459+#endif
460
461 if (flags & CLONE_VM) {
462 ts = malloc(sizeof(TaskState) + NEW_STACK_SIZE);
463@@ -1627,16 +1654,60 @@
464 #error unsupported target CPU
465 #endif
466 new_env->opaque = ts;
467+#ifdef USE_NPTL
468+ nptl_flags = flags;
469+ flags &= ~CLONE_NPTL_FLAGS2;
470+ if (nptl_flags & CLONE_CHILD_CLEARTID) {
471+ ts->child_tidptr = child_tidptr;
472+ }
473+ if (nptl_flags & CLONE_SETTLS)
474+ cpu_set_tls (new_env, newtls);
475+ /* Grab the global cpu lock so that the thread setup appears
476+ atomic. */
477+ if (nptl_flags & CLONE_CHILD_SETTID)
478+ spin_lock(&nptl_lock);
479+#else
480+ if (flags & CLONE_NPTL_FLAGS2)
481+ return -EINVAL;
482+#endif
483+
484 #ifdef __ia64__
485 ret = __clone2(clone_func, new_stack + NEW_STACK_SIZE, flags, new_env);
486 #else
487 ret = clone(clone_func, new_stack + NEW_STACK_SIZE, flags, new_env);
488 #endif
489+#ifdef USE_NPTL
490+ if (ret != -1) {
491+ if (nptl_flags & CLONE_CHILD_SETTID)
492+ *child_tidptr = ret;
493+ }
494+ /* Allow the child to continue. */
495+ if (nptl_flags & CLONE_CHILD_SETTID)
496+ spin_unlock(&nptl_lock);
497+#endif
498 } else {
499- /* if no CLONE_VM, we consider it is a fork */
500- if ((flags & ~CSIGNAL) != 0)
501- return -EINVAL;
502- ret = fork();
503+ /* if no CLONE_VM, we consider it is a fork */
504+ if ((flags & ~(CSIGNAL | CLONE_NPTL_FLAGS2)) != 0)
505+ return -EINVAL;
506+ ret = fork();
507+#ifdef USE_NPTL
508+ /* There is a race condition here. The parent process could
509+ theoretically read the TID in the child process before the child
510+ tid is set. This would require using either ptrace
511+ (not implemented) or having *_tidptr to point at a shared memory
512+ mapping. We can't repeat the spinlock hack used above because
513+ the child process gets its own copy of the lock. */
514+ if (ret == 0) {
515+ /* Child Process. */
516+ if (flags & CLONE_CHILD_SETTID)
517+ *child_tidptr = gettid();
518+ ts = (TaskState *)env->opaque;
519+ if (flags & CLONE_CHILD_CLEARTID)
520+ ts->child_tidptr = child_tidptr;
521+ if (flags & CLONE_SETTLS)
522+ cpu_set_tls (env, newtls);
523+ }
524+#endif
525 }
526 return ret;
527 }
528@@ -1880,7 +1951,7 @@
529 ret = do_brk(arg1);
530 break;
531 case TARGET_NR_fork:
532- ret = get_errno(do_fork(cpu_env, SIGCHLD, 0));
533+ ret = get_errno(do_fork(cpu_env, SIGCHLD, 0, NULL, NULL, NULL));
534 break;
535 case TARGET_NR_waitpid:
536 {
537@@ -2836,7 +2907,8 @@
538 ret = get_errno(fsync(arg1));
539 break;
540 case TARGET_NR_clone:
541- ret = get_errno(do_fork(cpu_env, arg1, arg2));
542+ ret = get_errno(do_fork(cpu_env, arg1, arg2, (uint32_t *)arg3,
543+ (void *)arg4, (uint32_t *)arg5));
544 break;
545 #ifdef __NR_exit_group
546 /* new thread calls */
547@@ -3186,7 +3258,8 @@
548 #endif
549 #ifdef TARGET_NR_vfork
550 case TARGET_NR_vfork:
551- ret = get_errno(do_fork(cpu_env, CLONE_VFORK | CLONE_VM | SIGCHLD, 0));
552+ ret = get_errno(do_fork(cpu_env, CLONE_VFORK | CLONE_VM | SIGCHLD, 0,
553+ NULL, NULL, NULL));
554 break;
555 #endif
556 #ifdef TARGET_NR_ugetrlimit
557@@ -3681,4 +3754,3 @@
558 #endif
559 return ret;
560 }
561-
562Index: qemu/target-arm/cpu.h
563===================================================================
564--- qemu.orig/target-arm/cpu.h 2006-02-20 00:33:36.000000000 +0000
565+++ qemu/target-arm/cpu.h 2006-08-14 22:39:35.000000000 +0100
566@@ -35,6 +35,9 @@
567 #define EXCP_IRQ 5
568 #define EXCP_FIQ 6
569 #define EXCP_BKPT 7
570+#define EXCP_KERNEL_TRAP 8 /* Jumped to kernel code page. */
571+
572+
573
574 /* We currently assume float and double are IEEE single and double
575 precision respectively.
576@@ -85,6 +88,7 @@
577 uint32_t c9_data;
578 uint32_t c13_fcse; /* FCSE PID. */
579 uint32_t c13_context; /* Context ID. */
580+ uint32_t c13_tls; /* Paul Brook told me to just add this ;) */
581 } cp15;
582
583 /* Internal CPU feature flags. */
584@@ -135,6 +139,15 @@
585 int cpu_arm_signal_handler(int host_signum, struct siginfo *info,
586 void *puc);
587
588+void cpu_lock(void);
589+void cpu_unlock(void);
590+#if defined(USE_NPTL)
591+static inline void cpu_set_tls(CPUARMState *env, void *newtls)
592+{
593+ env->cp15.c13_tls = (uint32_t)newtls;
594+}
595+#endif
596+
597 #define CPSR_M (0x1f)
598 #define CPSR_T (1 << 5)
599 #define CPSR_F (1 << 6)
600@@ -146,7 +159,11 @@
601 #define CPSR_J (1 << 24)
602 #define CPSR_IT_0_1 (3 << 25)
603 #define CPSR_Q (1 << 27)
604-#define CPSR_NZCV (0xf << 28)
605+#define CPSR_V (1 << 28)
606+#define CPSR_C (1 << 29)
607+#define CPSR_Z (1 << 30)
608+#define CPSR_N (1 << 31)
609+#define CPSR_NZCV (CPSR_N | CPSR_Z | CPSR_C | CPSR_V)
610
611 #define CACHED_CPSR_BITS (CPSR_T | CPSR_Q | CPSR_NZCV)
612 /* Return the current CPSR value. */
613Index: qemu/target-arm/exec.h
614===================================================================
615--- qemu.orig/target-arm/exec.h 2005-11-26 10:38:39.000000000 +0000
616+++ qemu/target-arm/exec.h 2006-08-14 22:37:29.000000000 +0100
617@@ -51,8 +51,6 @@
618
619 /* In op_helper.c */
620
621-void cpu_lock(void);
622-void cpu_unlock(void);
623 void helper_set_cp15(CPUState *, uint32_t, uint32_t);
624 uint32_t helper_get_cp15(CPUState *, uint32_t);
625
626Index: qemu/target-arm/op.c
627===================================================================
628--- qemu.orig/target-arm/op.c 2006-02-20 00:33:36.000000000 +0000
629+++ qemu/target-arm/op.c 2006-08-14 22:37:29.000000000 +0100
630@@ -891,6 +891,12 @@
631 cpu_loop_exit();
632 }
633
634+void OPPROTO op_kernel_trap(void)
635+{
636+ env->exception_index = EXCP_KERNEL_TRAP;
637+ cpu_loop_exit();
638+}
639+
640 /* VFP support. We follow the convention used for VFP instrunctions:
641 Single precition routines have a "s" suffix, double precision a
642 "d" suffix. */
643Index: qemu/target-arm/translate.c
644===================================================================
645--- qemu.orig/target-arm/translate.c 2006-05-26 18:11:04.000000000 +0100
646+++ qemu/target-arm/translate.c 2006-08-14 22:37:29.000000000 +0100
647@@ -2377,6 +2377,7 @@
648 s->is_jmp = DISAS_JUMP;
649 }
650
651+
652 /* generate intermediate code in gen_opc_buf and gen_opparam_buf for
653 basic block 'tb'. If search_pc is TRUE, also generate PC
654 information for each intermediate instruction. */
655@@ -2411,6 +2412,15 @@
656 nb_gen_labels = 0;
657 lj = -1;
658 do {
659+#ifdef CONFIG_USER_ONLY
660+ /* Intercept jump to the magic kernel page. */
661+ if (dc->pc > 0xffff0000) {
662+ gen_op_kernel_trap();
663+ dc->is_jmp = DISAS_UPDATE;
664+ break;
665+ }
666+#endif
667+
668 if (env->nb_breakpoints > 0) {
669 for(j = 0; j < env->nb_breakpoints; j++) {
670 if (env->breakpoints[j] == dc->pc) {
671Index: qemu/qemu_spinlock.h
672===================================================================
673--- /dev/null 1970-01-01 00:00:00.000000000 +0000
674+++ qemu/qemu_spinlock.h 2006-08-14 22:37:29.000000000 +0100
675@@ -0,0 +1,182 @@
676+/*
677+ * internal execution defines for qemu
678+ *
679+ * Copyright (c) 2003 Fabrice Bellard
680+ *
681+ * This library is free software; you can redistribute it and/or
682+ * modify it under the terms of the GNU Lesser General Public
683+ * License as published by the Free Software Foundation; either
684+ * version 2 of the License, or (at your option) any later version.
685+ *
686+ * This library is distributed in the hope that it will be useful,
687+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
688+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
689+ * Lesser General Public License for more details.
690+ *
691+ * You should have received a copy of the GNU Lesser General Public
692+ * License along with this library; if not, write to the Free Software
693+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
694+ */
695+
696+#ifndef _QEMU_SPINLOCK_H
697+#define _QEMU_SPINLOCK_H
698+
699+#ifdef __powerpc__
700+static inline int testandset (int *p)
701+{
702+ int ret;
703+ __asm__ __volatile__ (
704+ "0: lwarx %0,0,%1\n"
705+ " xor. %0,%3,%0\n"
706+ " bne 1f\n"
707+ " stwcx. %2,0,%1\n"
708+ " bne- 0b\n"
709+ "1: "
710+ : "=&r" (ret)
711+ : "r" (p), "r" (1), "r" (0)
712+ : "cr0", "memory");
713+ return ret;
714+}
715+#endif
716+
717+#ifdef __i386__
718+static inline int testandset (int *p)
719+{
720+ long int readval = 0;
721+
722+ __asm__ __volatile__ ("lock; cmpxchgl %2, %0"
723+ : "+m" (*p), "+a" (readval)
724+ : "r" (1)
725+ : "cc");
726+ return readval;
727+}
728+#endif
729+
730+#ifdef __x86_64__
731+static inline int testandset (int *p)
732+{
733+ long int readval = 0;
734+
735+ __asm__ __volatile__ ("lock; cmpxchgl %2, %0"
736+ : "+m" (*p), "+a" (readval)
737+ : "r" (1)
738+ : "cc");
739+ return readval;
740+}
741+#endif
742+
743+#ifdef __s390__
744+static inline int testandset (int *p)
745+{
746+ int ret;
747+
748+ __asm__ __volatile__ ("0: cs %0,%1,0(%2)\n"
749+ " jl 0b"
750+ : "=&d" (ret)
751+ : "r" (1), "a" (p), "0" (*p)
752+ : "cc", "memory" );
753+ return ret;
754+}
755+#endif
756+
757+#ifdef __alpha__
758+static inline int testandset (int *p)
759+{
760+ int ret;
761+ unsigned long one;
762+
763+ __asm__ __volatile__ ("0: mov 1,%2\n"
764+ " ldl_l %0,%1\n"
765+ " stl_c %2,%1\n"
766+ " beq %2,1f\n"
767+ ".subsection 2\n"
768+ "1: br 0b\n"
769+ ".previous"
770+ : "=r" (ret), "=m" (*p), "=r" (one)
771+ : "m" (*p));
772+ return ret;
773+}
774+#endif
775+
776+#ifdef __sparc__
777+static inline int testandset (int *p)
778+{
779+ int ret;
780+
781+ __asm__ __volatile__("ldstub [%1], %0"
782+ : "=r" (ret)
783+ : "r" (p)
784+ : "memory");
785+
786+ return (ret ? 1 : 0);
787+}
788+#endif
789+
790+#ifdef __arm__
791+static inline int testandset (int *spinlock)
792+{
793+ register unsigned int ret;
794+ __asm__ __volatile__("swp %0, %1, [%2]"
795+ : "=r"(ret)
796+ : "0"(1), "r"(spinlock));
797+
798+ return ret;
799+}
800+#endif
801+
802+#ifdef __mc68000
803+static inline int testandset (int *p)
804+{
805+ char ret;
806+ __asm__ __volatile__("tas %1; sne %0"
807+ : "=r" (ret)
808+ : "m" (p)
809+ : "cc","memory");
810+ return ret;
811+}
812+#endif
813+
814+#ifdef __ia64
815+#include <ia64intrin.h>
816+
817+static inline int testandset (int *p)
818+{
819+ return __sync_lock_test_and_set (p, 1);
820+}
821+#endif
822+
823+typedef int spinlock_t;
824+
825+#define SPIN_LOCK_UNLOCKED 0
826+
827+#if defined(CONFIG_USER_ONLY)
828+static inline void spin_lock(spinlock_t *lock)
829+{
830+ while (testandset(lock));
831+}
832+
833+static inline void spin_unlock(spinlock_t *lock)
834+{
835+ *lock = 0;
836+}
837+
838+static inline int spin_trylock(spinlock_t *lock)
839+{
840+ return !testandset(lock);
841+}
842+#else
843+static inline void spin_lock(spinlock_t *lock)
844+{
845+}
846+
847+static inline void spin_unlock(spinlock_t *lock)
848+{
849+}
850+
851+static inline int spin_trylock(spinlock_t *lock)
852+{
853+ return 1;
854+}
855+#endif
856+
857+#endif /* ! _QEMU_SPINLOCK_H */
diff --git a/meta/packages/qemu/qemu_cvs.bb b/meta/packages/qemu/qemu_cvs.bb
index 5697e69578..3675be4a72 100644
--- a/meta/packages/qemu/qemu_cvs.bb
+++ b/meta/packages/qemu/qemu_cvs.bb
@@ -1,10 +1,11 @@
1LICENSE = "GPL" 1LICENSE = "GPL"
2PV = "0.8.0+cvs${SRCDATE}" 2PV = "0.8.0+cvs${SRCDATE}"
3PR = "r1" 3PR = "r2"
4 4
5SRC_URI = "cvs://anonymous@cvs.savannah.nongnu.org/sources/qemu;method=pserver;rsh=ssh;module=qemu \ 5SRC_URI = "cvs://anonymous@cvs.savannah.nongnu.org/sources/qemu;method=pserver;rsh=ssh;module=qemu \
6 file://configure.patch;patch=1 \ 6 file://configure.patch;patch=1 \
7 file://mouse_fix-r0.patch;patch=1 \ 7 file://mouse_fix-r0.patch;patch=1 \
8 file://arm_nptl.patch;patch=1 \
8 file://pl110_rgb-r0.patch;patch=1" 9 file://pl110_rgb-r0.patch;patch=1"
9 10
10S = "${WORKDIR}/qemu" 11S = "${WORKDIR}/qemu"
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2024-06-20 14:02:35 +0000