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-rw-r--r--meta/packages/qemu/qemu-0.9.1+svnr4027/qemu-0.9.0-nptl.patch854
1 files changed, 0 insertions, 854 deletions
diff --git a/meta/packages/qemu/qemu-0.9.1+svnr4027/qemu-0.9.0-nptl.patch b/meta/packages/qemu/qemu-0.9.1+svnr4027/qemu-0.9.0-nptl.patch
deleted file mode 100644
index 4a87d8d63..000000000
--- a/meta/packages/qemu/qemu-0.9.1+svnr4027/qemu-0.9.0-nptl.patch
+++ /dev/null
@@ -1,854 +0,0 @@
-These are Paul Brook's patches to QEMU-0.8.2 to enable the running of single
-ARM binaries under QEMU's user-emulation mode. Without them, QEMU-0.8.1
-immediately dies saying:
- Error: f0005
- qemu: uncaught target signal 6 (Aborted) - exiting
-while qemu-0.8.2 dies saying:
- qemu: Unsupported syscall: 983045
- cannot set up thread-local storage: unknown error
-
-This file is a rediffing of the patches visible at
-https://nowt.dyndns.org/patch.qemu_nptl on 27 Sept 2006
-which "patch" fails to apply automatically.
-See also http://lists.gnu.org/archive/html/qemu-devel/2006-09/msg00194.html
-
- Martin Guy, 27 Sept 2006
-
----
- configure | 25 ++++++
- exec-all.h | 165 ------------------------------------------
- linux-user/arm/syscall.h | 4 -
- linux-user/main.c | 94 +++++++++++++++++++++---
- linux-user/qemu.h | 3
- linux-user/syscall.c | 91 ++++++++++++++++++++++-
- qemu_spinlock.h | 181 +++++++++++++++++++++++++++++++++++++++++++++++
- target-arm/cpu.h | 10 ++
- target-arm/op.c | 6 +
- target-arm/translate.c | 9 ++
- 10 files changed, 405 insertions(+), 183 deletions(-)
-
-Index: qemu/configure
-===================================================================
---- qemu.orig/configure 2008-04-09 23:02:37.000000000 +0100
-+++ qemu/configure 2008-04-09 23:06:36.000000000 +0100
-@@ -109,6 +109,7 @@
- build_docs="no"
- uname_release=""
- curses="yes"
-+nptl="yes"
-
- # OS specific
- targetos=`uname -s`
-@@ -334,6 +335,8 @@
- ;;
- *) echo "ERROR: unknown option $opt"; show_help="yes"
- ;;
-+ --disable-nptl) nptl="no"
-+ ;;
- esac
- done
-
-@@ -429,6 +432,7 @@
- echo " --disable-linux-user disable all linux usermode emulation targets"
- echo " --enable-darwin-user enable all darwin usermode emulation targets"
- echo " --disable-darwin-user disable all darwin usermode emulation targets"
-+echo " --disable-nptl disable usermode NPTL guest support"
- echo " --fmod-lib path to FMOD library"
- echo " --fmod-inc path to FMOD includes"
- echo " --enable-uname-release=R Return R for uname -r in usermode emulation"
-@@ -595,6 +599,23 @@
- }
- EOF
-
-+# check NPTL support
-+cat > $TMPC <<EOF
-+#include <sched.h>
-+void foo()
-+{
-+#ifndef CLONE_SETTLS
-+#error bork
-+#endif
-+}
-+EOF
-+
-+if $cc -c -o $TMPO $TMPC 2> /dev/null ; then
-+ :
-+else
-+ nptl="no"
-+fi
-+
- ##########################################
- # SDL probe
-
-@@ -778,6 +799,7 @@
- echo "Documentation $build_docs"
- [ ! -z "$uname_release" ] && \
- echo "uname -r $uname_release"
-+echo "NPTL support $nptl"
-
- if test $sdl_too_old = "yes"; then
- echo "-> Your SDL version is too old - please upgrade to have SDL support"
-@@ -1115,6 +1137,9 @@
- echo "TARGET_ARCH=arm" >> $config_mak
- echo "#define TARGET_ARCH \"arm\"" >> $config_h
- echo "#define TARGET_ARM 1" >> $config_h
-+ if test "$nptl" = "yes" ; then
-+ echo "#define USE_NPTL 1" >> $config_h
-+ fi
- bflt="yes"
- elif test "$target_cpu" = "sparc" ; then
- echo "TARGET_ARCH=sparc" >> $config_mak
-Index: qemu/exec-all.h
-===================================================================
---- qemu.orig/exec-all.h 2008-04-09 22:39:38.000000000 +0100
-+++ qemu/exec-all.h 2008-04-09 23:05:55.000000000 +0100
-@@ -297,170 +297,7 @@
- extern CPUReadMemoryFunc *io_mem_read[IO_MEM_NB_ENTRIES][4];
- extern void *io_mem_opaque[IO_MEM_NB_ENTRIES];
-
--#if defined(__powerpc__)
--static inline int testandset (int *p)
--{
-- int ret;
-- __asm__ __volatile__ (
-- "0: lwarx %0,0,%1\n"
-- " xor. %0,%3,%0\n"
-- " bne 1f\n"
-- " stwcx. %2,0,%1\n"
-- " bne- 0b\n"
-- "1: "
-- : "=&r" (ret)
-- : "r" (p), "r" (1), "r" (0)
-- : "cr0", "memory");
-- return ret;
--}
--#elif defined(__i386__)
--static inline int testandset (int *p)
--{
-- long int readval = 0;
--
-- __asm__ __volatile__ ("lock; cmpxchgl %2, %0"
-- : "+m" (*p), "+a" (readval)
-- : "r" (1)
-- : "cc");
-- return readval;
--}
--#elif defined(__x86_64__)
--static inline int testandset (int *p)
--{
-- long int readval = 0;
--
-- __asm__ __volatile__ ("lock; cmpxchgl %2, %0"
-- : "+m" (*p), "+a" (readval)
-- : "r" (1)
-- : "cc");
-- return readval;
--}
--#elif defined(__s390__)
--static inline int testandset (int *p)
--{
-- int ret;
--
-- __asm__ __volatile__ ("0: cs %0,%1,0(%2)\n"
-- " jl 0b"
-- : "=&d" (ret)
-- : "r" (1), "a" (p), "0" (*p)
-- : "cc", "memory" );
-- return ret;
--}
--#elif defined(__alpha__)
--static inline int testandset (int *p)
--{
-- int ret;
-- unsigned long one;
--
-- __asm__ __volatile__ ("0: mov 1,%2\n"
-- " ldl_l %0,%1\n"
-- " stl_c %2,%1\n"
-- " beq %2,1f\n"
-- ".subsection 2\n"
-- "1: br 0b\n"
-- ".previous"
-- : "=r" (ret), "=m" (*p), "=r" (one)
-- : "m" (*p));
-- return ret;
--}
--#elif defined(__sparc__)
--static inline int testandset (int *p)
--{
-- int ret;
--
-- __asm__ __volatile__("ldstub [%1], %0"
-- : "=r" (ret)
-- : "r" (p)
-- : "memory");
--
-- return (ret ? 1 : 0);
--}
--#elif defined(__arm__)
--static inline int testandset (int *spinlock)
--{
-- register unsigned int ret;
-- __asm__ __volatile__("swp %0, %1, [%2]"
-- : "=r"(ret)
-- : "0"(1), "r"(spinlock));
--
-- return ret;
--}
--#elif defined(__mc68000)
--static inline int testandset (int *p)
--{
-- char ret;
-- __asm__ __volatile__("tas %1; sne %0"
-- : "=r" (ret)
-- : "m" (p)
-- : "cc","memory");
-- return ret;
--}
--#elif defined(__ia64)
--
--#include <ia64intrin.h>
--
--static inline int testandset (int *p)
--{
-- return __sync_lock_test_and_set (p, 1);
--}
--#elif defined(__mips__)
--static inline int testandset (int *p)
--{
-- int ret;
--
-- __asm__ __volatile__ (
-- " .set push \n"
-- " .set noat \n"
-- " .set mips2 \n"
-- "1: li $1, 1 \n"
-- " ll %0, %1 \n"
-- " sc $1, %1 \n"
-- " beqz $1, 1b \n"
-- " .set pop "
-- : "=r" (ret), "+R" (*p)
-- :
-- : "memory");
--
-- return ret;
--}
--#else
--#error unimplemented CPU support
--#endif
--
--typedef int spinlock_t;
--
--#define SPIN_LOCK_UNLOCKED 0
--
--#if defined(CONFIG_USER_ONLY)
--static inline void spin_lock(spinlock_t *lock)
--{
-- while (testandset(lock));
--}
--
--static inline void spin_unlock(spinlock_t *lock)
--{
-- *lock = 0;
--}
--
--static inline int spin_trylock(spinlock_t *lock)
--{
-- return !testandset(lock);
--}
--#else
--static inline void spin_lock(spinlock_t *lock)
--{
--}
--
--static inline void spin_unlock(spinlock_t *lock)
--{
--}
--
--static inline int spin_trylock(spinlock_t *lock)
--{
-- return 1;
--}
--#endif
-+#include "qemu_spinlock.h"
-
- extern spinlock_t tb_lock;
-
-Index: qemu/linux-user/arm/syscall.h
-===================================================================
---- qemu.orig/linux-user/arm/syscall.h 2007-11-27 12:09:33.000000000 +0000
-+++ qemu/linux-user/arm/syscall.h 2008-04-09 23:05:55.000000000 +0100
-@@ -28,7 +28,9 @@
- #define ARM_SYSCALL_BASE 0x900000
- #define ARM_THUMB_SYSCALL 0
-
--#define ARM_NR_cacheflush (ARM_SYSCALL_BASE + 0xf0000 + 2)
-+#define ARM_NR_BASE 0xf0000
-+#define ARM_NR_cacheflush (ARM_NR_BASE + 2)
-+#define ARM_NR_set_tls (ARM_NR_BASE + 5)
-
- #define ARM_NR_semihosting 0x123456
- #define ARM_NR_thumb_semihosting 0xAB
-Index: qemu/linux-user/main.c
-===================================================================
---- qemu.orig/linux-user/main.c 2008-04-09 23:02:37.000000000 +0100
-+++ qemu/linux-user/main.c 2008-04-09 23:05:55.000000000 +0100
-@@ -364,6 +364,50 @@
- }
- }
-
-+/* Handle a jump to the kernel code page. */
-+static int
-+do_kernel_trap(CPUARMState *env)
-+{
-+ uint32_t addr;
-+ uint32_t *ptr;
-+ uint32_t cpsr;
-+
-+ switch (env->regs[15]) {
-+ case 0xffff0fc0: /* __kernel_cmpxchg */
-+ /* XXX: This only works between threads, not between processes.
-+ Use native atomic operations. */
-+ /* ??? This probably breaks horribly if the access segfaults. */
-+ cpu_lock();
-+ ptr = (uint32_t *)env->regs[2];
-+ cpsr = cpsr_read(env);
-+ if (*ptr == env->regs[0]) {
-+ *ptr = env->regs[1];
-+ env->regs[0] = 0;
-+ cpsr |= CPSR_C;
-+ } else {
-+ env->regs[0] = -1;
-+ cpsr &= ~CPSR_C;
-+ }
-+ cpsr_write(env, cpsr, CPSR_C);
-+ cpu_unlock();
-+ break;
-+ case 0xffff0fe0: /* __kernel_get_tls */
-+ env->regs[0] = env->cp15.c13_tls;
-+ break;
-+ default:
-+ return 1;
-+ }
-+ /* Jump back to the caller. */
-+ addr = env->regs[14];
-+ if (addr & 1) {
-+ env->thumb = 1;
-+ addr &= ~1;
-+ }
-+ env->regs[15] = addr;
-+
-+ return 0;
-+}
-+
- void cpu_loop(CPUARMState *env)
- {
- int trapnr;
-@@ -474,10 +518,8 @@
- }
- }
-
-- if (n == ARM_NR_cacheflush) {
-- arm_cache_flush(env->regs[0], env->regs[1]);
-- } else if (n == ARM_NR_semihosting
-- || n == ARM_NR_thumb_semihosting) {
-+ if (n == ARM_NR_semihosting
-+ || n == ARM_NR_thumb_semihosting) {
- env->regs[0] = do_arm_semihosting (env);
- } else if (n == 0 || n >= ARM_SYSCALL_BASE
- || (env->thumb && n == ARM_THUMB_SYSCALL)) {
-@@ -488,14 +530,34 @@
- n -= ARM_SYSCALL_BASE;
- env->eabi = 0;
- }
-- env->regs[0] = do_syscall(env,
-- n,
-- env->regs[0],
-- env->regs[1],
-- env->regs[2],
-- env->regs[3],
-- env->regs[4],
-- env->regs[5]);
-+ if ( n > ARM_NR_BASE) {
-+ switch (n)
-+ {
-+ case ARM_NR_cacheflush:
-+ arm_cache_flush(env->regs[0], env->regs[1]);
-+ break;
-+#ifdef USE_NPTL
-+ case ARM_NR_set_tls:
-+ cpu_set_tls(env, env->regs[0]);
-+ env->regs[0] = 0;
-+ break;
-+#endif
-+ default:
-+ printf ("Error: Bad syscall: %x\n", n);
-+ goto error;
-+ }
-+ }
-+ else
-+ {
-+ env->regs[0] = do_syscall(env,
-+ n,
-+ env->regs[0],
-+ env->regs[1],
-+ env->regs[2],
-+ env->regs[3],
-+ env->regs[4],
-+ env->regs[5]);
-+ }
- } else {
- goto error;
- }
-@@ -534,6 +596,10 @@
- }
- }
- break;
-+ case EXCP_KERNEL_TRAP:
-+ if (do_kernel_trap(env))
-+ goto error;
-+ break;
- default:
- error:
- fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
-@@ -2402,6 +2468,10 @@
- ts->heap_base = info->brk;
- /* This will be filled in on the first SYS_HEAPINFO call. */
- ts->heap_limit = 0;
-+ /* Register the magic kernel code page. The cpu will generate a
-+ special exception when it tries to execute code here. We can't
-+ put real code here because it may be in use by the host kernel. */
-+ page_set_flags(0xffff0000, 0xffff0fff, 0);
- #endif
-
- if (gdbstub_port) {
-Index: qemu/linux-user/qemu.h
-===================================================================
---- qemu.orig/linux-user/qemu.h 2008-01-02 15:48:21.000000000 +0000
-+++ qemu/linux-user/qemu.h 2008-04-09 23:05:55.000000000 +0100
-@@ -107,6 +107,9 @@
- uint32_t heap_base;
- uint32_t heap_limit;
- #endif
-+#ifdef USE_NPTL
-+ uint32_t *child_tidptr;
-+#endif
- int used; /* non zero if used */
- struct image_info *info;
- uint8_t stack[0];
-Index: qemu/linux-user/syscall.c
-===================================================================
---- qemu.orig/linux-user/syscall.c 2008-04-09 23:02:38.000000000 +0100
-+++ qemu/linux-user/syscall.c 2008-04-09 23:05:55.000000000 +0100
-@@ -71,9 +71,18 @@
- #include <linux/kd.h>
-
- #include "qemu.h"
-+#include "qemu_spinlock.h"
-
- //#define DEBUG
-
-+#ifdef USE_NPTL
-+#define CLONE_NPTL_FLAGS2 (CLONE_SETTLS | \
-+ CLONE_PARENT_SETTID | CLONE_CHILD_SETTID | CLONE_CHILD_CLEARTID)
-+#else
-+/* XXX: Hardcode the above values. */
-+#define CLONE_NPTL_FLAGS2 0
-+#endif
-+
- #if defined(TARGET_I386) || defined(TARGET_ARM) || defined(TARGET_SPARC) \
- || defined(TARGET_M68K) || defined(TARGET_SH4) || defined(TARGET_CRIS)
- /* 16 bit uid wrappers emulation */
-@@ -2702,9 +2711,19 @@
- thread/process */
- #define NEW_STACK_SIZE 8192
-
-+#ifdef USE_NPTL
-+static spinlock_t nptl_lock = SPIN_LOCK_UNLOCKED;
-+#endif
-+
- static int clone_func(void *arg)
- {
- CPUState *env = arg;
-+#ifdef HAVE_NPTL
-+ /* Wait until the parent has finshed initializing the tls state. */
-+ while (!spin_trylock(&nptl_lock))
-+ usleep(1);
-+ spin_unlock(&nptl_lock);
-+#endif
- cpu_loop(env);
- /* never exits */
- return 0;
-@@ -2712,13 +2731,22 @@
-
- /* do_fork() Must return host values and target errnos (unlike most
- do_*() functions). */
--int do_fork(CPUState *env, unsigned int flags, abi_ulong newsp)
-+int do_fork(CPUState *env, unsigned int flags, unsigned long newsp,
-+ uint32_t *parent_tidptr, void *newtls,
-+ uint32_t *child_tidptr)
- {
- int ret;
- TaskState *ts;
- uint8_t *new_stack;
- CPUState *new_env;
-
-+#ifdef USE_NPTL
-+ unsigned int nptl_flags;
-+
-+ if (flags & CLONE_PARENT_SETTID)
-+ *parent_tidptr = gettid();
-+#endif
-+
- if (flags & CLONE_VM) {
- ts = malloc(sizeof(TaskState) + NEW_STACK_SIZE);
- memset(ts, 0, sizeof(TaskState));
-@@ -2784,16 +2812,67 @@
- #error unsupported target CPU
- #endif
- new_env->opaque = ts;
-+#ifdef USE_NPTL
-+ nptl_flags = flags;
-+ flags &= ~CLONE_NPTL_FLAGS2;
-+
-+ if (nptl_flags & CLONE_CHILD_CLEARTID) {
-+ ts->child_tidptr = child_tidptr;
-+ }
-+
-+ if (nptl_flags & CLONE_SETTLS)
-+ cpu_set_tls (new_env, newtls);
-+
-+ /* Grab the global cpu lock so that the thread setup appears
-+ atomic. */
-+ if (nptl_flags & CLONE_CHILD_SETTID)
-+ spin_lock(&nptl_lock);
-+
-+#else
-+ if (flags & CLONE_NPTL_FLAGS2)
-+ return -EINVAL;
-+#endif
-+
-+ if (CLONE_VFORK & flags)
-+ flags ^= CLONE_VM;
- #ifdef __ia64__
- ret = __clone2(clone_func, new_stack + NEW_STACK_SIZE, flags, new_env);
- #else
- ret = clone(clone_func, new_stack + NEW_STACK_SIZE, flags, new_env);
- #endif
-+#ifdef USE_NPTL
-+ if (ret != -1) {
-+ if (nptl_flags & CLONE_CHILD_SETTID)
-+ *child_tidptr = ret;
-+ }
-+
-+ /* Allow the child to continue. */
-+ if (nptl_flags & CLONE_CHILD_SETTID)
-+ spin_unlock(&nptl_lock);
-+#endif
- } else {
- /* if no CLONE_VM, we consider it is a fork */
-- if ((flags & ~CSIGNAL) != 0)
-+ if ((flags & ~(CSIGNAL | CLONE_NPTL_FLAGS2)) != 0)
- return -EINVAL;
- ret = fork();
-+#ifdef USE_NPTL
-+ /* There is a race condition here. The parent process could
-+ theoretically read the TID in the child process before the child
-+ tid is set. This would require using either ptrace
-+ (not implemented) or having *_tidptr to point at a shared memory
-+ mapping. We can't repeat the spinlock hack used above because
-+ the child process gets its own copy of the lock. */
-+ if (ret == 0) {
-+ /* Child Process. */
-+ if (flags & CLONE_CHILD_SETTID)
-+ *child_tidptr = gettid();
-+ ts = (TaskState *)env->opaque;
-+ if (flags & CLONE_CHILD_CLEARTID)
-+ ts->child_tidptr = child_tidptr;
-+ if (flags & CLONE_SETTLS)
-+ cpu_set_tls (env, newtls);
-+ }
-+#endif
- }
- return ret;
- }
-@@ -3118,7 +3197,7 @@
- ret = do_brk(arg1);
- break;
- case TARGET_NR_fork:
-- ret = get_errno(do_fork(cpu_env, SIGCHLD, 0));
-+ ret = get_errno(do_fork(cpu_env, SIGCHLD, 0, NULL, NULL, NULL));
- break;
- #ifdef TARGET_NR_waitpid
- case TARGET_NR_waitpid:
-@@ -4481,7 +4560,8 @@
- ret = get_errno(fsync(arg1));
- break;
- case TARGET_NR_clone:
-- ret = get_errno(do_fork(cpu_env, arg1, arg2));
-+ ret = get_errno(do_fork(cpu_env, arg1, arg2, (uint32_t *)arg3,
-+ (void *)arg4, (uint32_t *)arg5));
- break;
- #ifdef __NR_exit_group
- /* new thread calls */
-@@ -4928,7 +5008,8 @@
- #endif
- #ifdef TARGET_NR_vfork
- case TARGET_NR_vfork:
-- ret = get_errno(do_fork(cpu_env, CLONE_VFORK | CLONE_VM | SIGCHLD, 0));
-+ ret = get_errno(do_fork(cpu_env, CLONE_VFORK | CLONE_VM | SIGCHLD, 0,
-+ NULL, NULL, NULL));
- break;
- #endif
- #ifdef TARGET_NR_ugetrlimit
-Index: qemu/qemu_spinlock.h
-===================================================================
---- /dev/null 1970-01-01 00:00:00.000000000 +0000
-+++ qemu/qemu_spinlock.h 2008-04-09 23:05:55.000000000 +0100
-@@ -0,0 +1,181 @@
-+/*
-+ * Atomic operation helper include
-+ *
-+ * Copyright (c) 2005 Fabrice Bellard
-+ *
-+ * This library is free software; you can redistribute it and/or
-+ * modify it under the terms of the GNU Lesser General Public
-+ * License as published by the Free Software Foundation; either
-+ * version 2 of the License, or (at your option) any later version.
-+ *
-+ * This library is distributed in the hope that it will be useful,
-+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-+ * Lesser General Public License for more details.
-+ *
-+ * You should have received a copy of the GNU Lesser General Public
-+ * License along with this library; if not, write to the Free Software
-+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-+ */
-+#ifndef QEMU_SPINLOCK_H
-+#define QEMU_SPINLOCK_H
-+
-+#ifdef __powerpc__
-+static inline int testandset (int *p)
-+{
-+ int ret;
-+ __asm__ __volatile__ (
-+ "0: lwarx %0,0,%1\n"
-+ " xor. %0,%3,%0\n"
-+ " bne 1f\n"
-+ " stwcx. %2,0,%1\n"
-+ " bne- 0b\n"
-+ "1: "
-+ : "=&r" (ret)
-+ : "r" (p), "r" (1), "r" (0)
-+ : "cr0", "memory");
-+ return ret;
-+}
-+#endif
-+
-+#ifdef __i386__
-+static inline int testandset (int *p)
-+{
-+ long int readval = 0;
-+
-+ __asm__ __volatile__ ("lock; cmpxchgl %2, %0"
-+ : "+m" (*p), "+a" (readval)
-+ : "r" (1)
-+ : "cc");
-+ return readval;
-+}
-+#endif
-+
-+#ifdef __x86_64__
-+static inline int testandset (int *p)
-+{
-+ long int readval = 0;
-+
-+ __asm__ __volatile__ ("lock; cmpxchgl %2, %0"
-+ : "+m" (*p), "+a" (readval)
-+ : "r" (1)
-+ : "cc");
-+ return readval;
-+}
-+#endif
-+
-+#ifdef __s390__
-+static inline int testandset (int *p)
-+{
-+ int ret;
-+
-+ __asm__ __volatile__ ("0: cs %0,%1,0(%2)\n"
-+ " jl 0b"
-+ : "=&d" (ret)
-+ : "r" (1), "a" (p), "0" (*p)
-+ : "cc", "memory" );
-+ return ret;
-+}
-+#endif
-+
-+#ifdef __alpha__
-+static inline int testandset (int *p)
-+{
-+ int ret;
-+ unsigned long one;
-+
-+ __asm__ __volatile__ ("0: mov 1,%2\n"
-+ " ldl_l %0,%1\n"
-+ " stl_c %2,%1\n"
-+ " beq %2,1f\n"
-+ ".subsection 2\n"
-+ "1: br 0b\n"
-+ ".previous"
-+ : "=r" (ret), "=m" (*p), "=r" (one)
-+ : "m" (*p));
-+ return ret;
-+}
-+#endif
-+
-+#ifdef __sparc__
-+static inline int testandset (int *p)
-+{
-+ int ret;
-+
-+ __asm__ __volatile__("ldstub [%1], %0"
-+ : "=r" (ret)
-+ : "r" (p)
-+ : "memory");
-+
-+ return (ret ? 1 : 0);
-+}
-+#endif
-+
-+#ifdef __arm__
-+static inline int testandset (int *spinlock)
-+{
-+ register unsigned int ret;
-+ __asm__ __volatile__("swp %0, %1, [%2]"
-+ : "=r"(ret)
-+ : "0"(1), "r"(spinlock));
-+
-+ return ret;
-+}
-+#endif
-+
-+#ifdef __mc68000
-+static inline int testandset (int *p)
-+{
-+ char ret;
-+ __asm__ __volatile__("tas %1; sne %0"
-+ : "=r" (ret)
-+ : "m" (p)
-+ : "cc","memory");
-+ return ret;
-+}
-+#endif
-+
-+#ifdef __ia64
-+#include <ia64intrin.h>
-+
-+static inline int testandset (int *p)
-+{
-+ return __sync_lock_test_and_set (p, 1);
-+}
-+#endif
-+
-+typedef int spinlock_t;
-+
-+#define SPIN_LOCK_UNLOCKED 0
-+
-+#if defined(CONFIG_USER_ONLY)
-+static inline void spin_lock(spinlock_t *lock)
-+{
-+ while (testandset(lock));
-+}
-+
-+static inline void spin_unlock(spinlock_t *lock)
-+{
-+ *lock = 0;
-+}
-+
-+static inline int spin_trylock(spinlock_t *lock)
-+{
-+ return !testandset(lock);
-+}
-+#else
-+static inline void spin_lock(spinlock_t *lock)
-+{
-+}
-+
-+static inline void spin_unlock(spinlock_t *lock)
-+{
-+}
-+
-+static inline int spin_trylock(spinlock_t *lock)
-+{
-+ return 1;
-+}
-+#endif
-+
-+#endif
-Index: qemu/target-arm/cpu.h
-===================================================================
---- qemu.orig/target-arm/cpu.h 2007-11-27 12:09:57.000000000 +0000
-+++ qemu/target-arm/cpu.h 2008-04-09 23:05:55.000000000 +0100
-@@ -38,6 +38,7 @@
- #define EXCP_FIQ 6
- #define EXCP_BKPT 7
- #define EXCP_EXCEPTION_EXIT 8 /* Return from v7M exception. */
-+#define EXCP_KERNEL_TRAP 9 /* Jumped to kernel code page. */
-
- #define ARMV7M_EXCP_RESET 1
- #define ARMV7M_EXCP_NMI 2
-@@ -222,6 +223,15 @@
- void cpu_lock(void);
- void cpu_unlock(void);
-
-+void cpu_lock(void);
-+void cpu_unlock(void);
-+#if defined(USE_NPTL)
-+static inline void cpu_set_tls(CPUARMState *env, void *newtls)
-+{
-+ env->cp15.c13_tls2 = (uint32_t)(long)newtls;
-+}
-+#endif
-+
- #define CPSR_M (0x1f)
- #define CPSR_T (1 << 5)
- #define CPSR_F (1 << 6)
-Index: qemu/target-arm/op.c
-===================================================================
---- qemu.orig/target-arm/op.c 2008-04-09 22:40:01.000000000 +0100
-+++ qemu/target-arm/op.c 2008-04-09 23:05:55.000000000 +0100
-@@ -994,6 +994,12 @@
- cpu_loop_exit();
- }
-
-+void OPPROTO op_kernel_trap(void)
-+{
-+ env->exception_index = EXCP_KERNEL_TRAP;
-+ cpu_loop_exit();
-+}
-+
- /* VFP support. We follow the convention used for VFP instrunctions:
- Single precition routines have a "s" suffix, double precision a
- "d" suffix. */
-Index: qemu/target-arm/translate.c
-===================================================================
---- qemu.orig/target-arm/translate.c 2008-04-09 22:40:01.000000000 +0100
-+++ qemu/target-arm/translate.c 2008-04-09 23:05:55.000000000 +0100
-@@ -7496,7 +7496,14 @@
- gen_op_exception_exit();
- }
- #endif
--
-+#ifdef CONFIG_USER_ONLY
-+ /* Intercept jump to the magic kernel page. */
-+ if (dc->pc > 0xffff0000) {
-+ gen_op_kernel_trap();
-+ dc->is_jmp = DISAS_UPDATE;
-+ break;
-+ }
-+#endif
- if (env->nb_breakpoints > 0) {
- for(j = 0; j < env->nb_breakpoints; j++) {
- if (env->breakpoints[j] == dc->pc) {
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-30 07:40:30 +0000