diff options
Diffstat (limited to 'recipes/qemu/qemu-0.9.1/qemu-0.9.0-nptl.patch')
| -rw-r--r-- | recipes/qemu/qemu-0.9.1/qemu-0.9.0-nptl.patch | 929 |
1 files changed, 0 insertions, 929 deletions
diff --git a/recipes/qemu/qemu-0.9.1/qemu-0.9.0-nptl.patch b/recipes/qemu/qemu-0.9.1/qemu-0.9.0-nptl.patch deleted file mode 100644 index 10e3cc04a5..0000000000 --- a/recipes/qemu/qemu-0.9.1/qemu-0.9.0-nptl.patch +++ /dev/null @@ -1,929 +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(-) - ---- qemu.orig/configure -+++ qemu/configure -@@ -103,10 +103,11 @@ check_gcc="yes" - softmmu="yes" - linux_user="no" - darwin_user="no" - build_docs="no" - uname_release="" -+nptl="yes" - - # OS specific - targetos=`uname -s` - case $targetos in - CYGWIN*) -@@ -322,10 +323,12 @@ for opt do - ;; - --disable-werror) werror="no" - ;; - *) echo "ERROR: unknown option $opt"; show_help="yes" - ;; -+ --disable-nptl) nptl="no" -+ ;; - esac - done - - if [ "$bsd" = "yes" -o "$darwin" = "yes" -o "$mingw32" = "yes" ] ; then - AIOLIBS= -@@ -417,10 +420,11 @@ echo " --enable-system enable - echo " --disable-system disable all system emulation targets" - echo " --enable-linux-user enable all linux usermode emulation targets" - 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" - echo " --sparc_cpu=V Build qemu for Sparc architecture v7, v8, v8plus, v8plusa, v9" - echo "" -@@ -583,10 +587,27 @@ fi - cat > $TMPC <<EOF - int main(void) { - } - EOF - -+# check NPTL support -+cat > $TMPC <<EOF -+#include <sched.h> -+void foo() -+{ -+#ifndef CLONE_SETTLS -+#error bork -+#endif -+} -+EOF -+ -+if $cc -c -o $TMPO $TMPC 2> /dev/null ; then -+ : -+else -+ nptl="no" -+fi -+ - ########################################## - # SDL probe - - sdl_too_old=no - -@@ -747,10 +768,11 @@ if test -n "$sparc_cpu"; then - fi - echo "kqemu support $kqemu" - 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" - fi - if [ -s /tmp/qemu-$$-sdl-config.log ]; then -@@ -1063,10 +1085,13 @@ if test "$target_cpu" = "i386" ; then - fi - elif test "$target_cpu" = "arm" -o "$target_cpu" = "armeb" ; then - 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 - echo "#define TARGET_ARCH \"sparc\"" >> $config_h - echo "#define TARGET_SPARC 1" >> $config_h ---- qemu.orig/exec-all.h -+++ qemu/exec-all.h -@@ -338,174 +338,11 @@ dummy_label ## n: ;\ - - extern CPUWriteMemoryFunc *io_mem_write[IO_MEM_NB_ENTRIES][4]; - 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; - - extern int tb_invalidated_flag; - ---- qemu.orig/linux-user/arm/syscall.h -+++ qemu/linux-user/arm/syscall.h -@@ -26,11 +26,13 @@ struct target_pt_regs { - #define ARM_ORIG_r0 uregs[17] - - #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 - - #if defined(TARGET_WORDS_BIGENDIAN) ---- qemu.orig/linux-user/main.c -+++ qemu/linux-user/main.c -@@ -361,10 +361,54 @@ static void arm_cache_flush(abi_ulong st - break; - addr = last1 + 1; - } - } - -+/* 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; - unsigned int n, insn; - target_siginfo_t info; -@@ -471,32 +515,50 @@ void cpu_loop(CPUARMState *env) - get_user_u32(insn, env->regs[15] - 4); - n = insn & 0xffffff; - } - } - -- 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)) { - /* linux syscall */ - if (env->thumb || n == 0) { - n = env->regs[7]; - } else { - 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; - } - } - break; -@@ -531,10 +593,14 @@ void cpu_loop(CPUARMState *env) - info.si_code = TARGET_TRAP_BRKPT; - queue_signal(info.si_signo, &info); - } - } - 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", - trapnr); - cpu_dump_state(env, stderr, fprintf, 0); -@@ -2378,10 +2444,14 @@ int main(int argc, char **argv) - #if defined(TARGET_ARM) || defined(TARGET_M68K) - ts->stack_base = info->start_stack; - 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) { - gdbserver_start (gdbstub_port); - gdb_handlesig(env, 0); ---- qemu.orig/linux-user/qemu.h -+++ qemu/linux-user/qemu.h -@@ -100,10 +100,13 @@ typedef struct TaskState { - /* Extra fields for semihosted binaries. */ - uint32_t stack_base; - 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]; - } __attribute__((aligned(16))) TaskState; - ---- qemu.orig/linux-user/syscall.c -+++ qemu/linux-user/syscall.c -@@ -69,13 +69,22 @@ - #include <linux/soundcard.h> - #include <linux/dirent.h> - #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 */ - #define USE_UID16 - #endif -@@ -2690,27 +2699,46 @@ abi_long do_arch_prctl(CPUX86State *env, - - /* this stack is the equivalent of the kernel stack associated with a - 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; - } - - /* 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)); - new_stack = ts->stack; - ts->used = 1; -@@ -2772,20 +2800,71 @@ int do_fork(CPUState *env, unsigned int - new_env->regs[14] = newsp; - #else - #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; - } - - static abi_long do_fcntl(int fd, int cmd, abi_ulong arg) -@@ -3106,11 +3185,11 @@ abi_long do_syscall(void *cpu_env, int n - break; - case TARGET_NR_brk: - 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: - { - int status; -@@ -4463,11 +4542,12 @@ abi_long do_syscall(void *cpu_env, int n - #endif - case TARGET_NR_fsync: - 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 */ - case TARGET_NR_exit_group: - gdb_exit(cpu_env, arg1); -@@ -4908,11 +4988,12 @@ abi_long do_syscall(void *cpu_env, int n - case TARGET_NR_putpmsg: - goto unimplemented; - #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 - case TARGET_NR_ugetrlimit: - { ---- /dev/null -+++ qemu/qemu_spinlock.h -@@ -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 ---- qemu.orig/target-arm/cpu.h -+++ qemu/target-arm/cpu.h -@@ -36,10 +36,11 @@ - #define EXCP_DATA_ABORT 4 - #define EXCP_IRQ 5 - #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 - #define ARMV7M_EXCP_HARD 3 - #define ARMV7M_EXCP_MEM 4 -@@ -220,10 +221,19 @@ int cpu_arm_signal_handler(int host_sign - void *puc); - - 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) - #define CPSR_I (1 << 7) - #define CPSR_A (1 << 8) ---- qemu.orig/target-arm/op.c -+++ qemu/target-arm/op.c -@@ -1007,10 +1007,16 @@ void OPPROTO op_exception_exit(void) - { - env->exception_index = EXCP_EXCEPTION_EXIT; - 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. */ - - #define VFP_OP(name, p) void OPPROTO op_vfp_##name##p(void) ---- qemu.orig/target-arm/translate.c -+++ qemu/target-arm/translate.c -@@ -7518,11 +7518,18 @@ static inline int gen_intermediate_code_ - /* We always get here via a jump, so know we are not in a - conditional execution block. */ - 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) { - gen_set_condexec(dc); - gen_op_movl_T0_im((long)dc->pc); |