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-rw-r--r--packages/qemu/qemu-0.8.0/arm_nptl.patch854
1 files changed, 0 insertions, 854 deletions
diff --git a/packages/qemu/qemu-0.8.0/arm_nptl.patch b/packages/qemu/qemu-0.8.0/arm_nptl.patch
deleted file mode 100644
index daf105071c..0000000000
--- a/packages/qemu/qemu-0.8.0/arm_nptl.patch
+++ /dev/null
@@ -1,854 +0,0 @@
-diff -ur qemu-0.8.0.orig/configure qemu-0.8.0/configure
---- qemu-0.8.0.orig/configure 2005-12-20 00:51:53.000000000 +0200
-+++ qemu-0.8.0/configure 2006-07-12 15:26:40.000000000 +0300
-@@ -89,6 +89,7 @@
- cocoa="no"
- check_gfx="yes"
- check_gcc="yes"
-+nptl=yes
-
- # OS specific
- targetos=`uname -s`
-@@ -205,6 +206,8 @@
- ;;
- --disable-gcc-check) check_gcc="no"
- ;;
-+ --disable-nptl) nptl="no"
-+ ;;
- esac
- done
-
-@@ -299,6 +302,23 @@
- fi
- fi
-
-+# 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
-
-@@ -489,6 +509,7 @@
- fi
- echo ""
- echo "kqemu support $kqemu"
-+echo "NPTL support $nptl"
- if test $kqemu = "yes" -a $linux = "yes" ; then
- echo ""
- echo "KQEMU Linux module configuration:"
-@@ -793,6 +814,14 @@
- fi
- echo "" >> $config_mak
- fi
-+else
-+ if test "$nptl" = "yes" ; then
-+ case "$target_cpu" in
-+ arm | armeb)
-+ echo "#define USE_NPTL 1" >> $config_h
-+ ;;
-+ esac
-+ fi
- fi
-
- if test "$cocoa" = "yes" ; then
-Only in qemu-0.8.0: configure.rej~
-Only in qemu-0.8.0: configure~
-diff -ur qemu-0.8.0.orig/exec-all.h qemu-0.8.0/exec-all.h
---- qemu-0.8.0.orig/exec-all.h 2005-12-20 00:51:53.000000000 +0200
-+++ qemu-0.8.0/exec-all.h 2006-07-12 15:23:46.000000000 +0300
-@@ -347,163 +347,7 @@
- extern CPUReadMemoryFunc *io_mem_read[IO_MEM_NB_ENTRIES][4];
- extern void *io_mem_opaque[IO_MEM_NB_ENTRIES];
-
--#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
-+#include "qemu_spinlock.h"
-
- extern spinlock_t tb_lock;
-
-diff -ur qemu-0.8.0.orig/linux-user/arm/syscall.h qemu-0.8.0/linux-user/arm/syscall.h
---- qemu-0.8.0.orig/linux-user/arm/syscall.h 2005-12-20 00:51:53.000000000 +0200
-+++ qemu-0.8.0/linux-user/arm/syscall.h 2006-07-12 15:23:46.000000000 +0300
-@@ -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
-diff -ur qemu-0.8.0.orig/linux-user/main.c qemu-0.8.0/linux-user/main.c
---- qemu-0.8.0.orig/linux-user/main.c 2006-07-12 15:20:37.000000000 +0300
-+++ qemu-0.8.0/linux-user/main.c 2006-07-12 15:23:46.000000000 +0300
-@@ -326,6 +326,50 @@
- }
- }
-
-+/* 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;
-@@ -368,10 +412,8 @@
- 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 >= ARM_SYSCALL_BASE
- || (env->thumb && n == ARM_THUMB_SYSCALL)) {
-@@ -381,14 +423,34 @@
- } else {
- n -= ARM_SYSCALL_BASE;
- }
-- 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;
- }
-@@ -427,6 +489,10 @@
- }
- }
- 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",
-@@ -1602,6 +1668,10 @@
- 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);
- }
- #elif defined(TARGET_SPARC)
- {
-diff -ur qemu-0.8.0.orig/linux-user/qemu.h qemu-0.8.0/linux-user/qemu.h
---- qemu-0.8.0.orig/linux-user/qemu.h 2005-12-20 00:51:53.000000000 +0200
-+++ qemu-0.8.0/linux-user/qemu.h 2006-07-12 15:23:46.000000000 +0300
-@@ -76,6 +76,9 @@
- uint32_t v86mask;
- #endif
- int used; /* non zero if used */
-+#ifdef USE_NPTL
-+ uint32_t *child_tidptr;
-+#endif
- uint8_t stack[0];
- } __attribute__((aligned(16))) TaskState;
-
-Only in qemu-0.8.0.orig/linux-user: signal.c.orig
-diff -ur qemu-0.8.0.orig/linux-user/syscall.c qemu-0.8.0/linux-user/syscall.c
---- qemu-0.8.0.orig/linux-user/syscall.c 2006-07-12 15:20:37.000000000 +0300
-+++ qemu-0.8.0/linux-user/syscall.c 2006-07-12 15:36:51.000000000 +0300
-@@ -72,9 +72,18 @@
- #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)
- /* 16 bit uid wrappers emulation */
- #define USE_UID16
-@@ -1527,20 +1536,38 @@
- 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;
- }
-
--int do_fork(CPUState *env, unsigned int flags, unsigned long 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);
-@@ -1576,16 +1603,62 @@
- #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
-+
- #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;
- }
-@@ -1757,7 +1830,7 @@
- ret = do_brk((char *)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;
- case TARGET_NR_waitpid:
- {
-@@ -2564,7 +2637,8 @@
- 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 */
-@@ -2925,7 +2999,8 @@
- #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
-@@ -3347,4 +3422,3 @@
- #endif
- return ret;
- }
--
-Only in qemu-0.8.0.orig/linux-user: syscall.c.orig
-Only in qemu-0.8.0/linux-user: syscall.c.rej~
-Only in qemu-0.8.0/linux-user: syscall.c~
-Only in qemu-0.8.0: qemu_spinlock.h
-diff -ur qemu-0.8.0.orig/target-arm/cpu.h qemu-0.8.0/target-arm/cpu.h
---- qemu-0.8.0.orig/target-arm/cpu.h 2005-12-20 00:51:53.000000000 +0200
-+++ qemu-0.8.0/target-arm/cpu.h 2006-07-12 15:27:28.000000000 +0300
-@@ -34,6 +34,9 @@
- #define EXCP_DATA_ABORT 4
- #define EXCP_IRQ 5
- #define EXCP_FIQ 6
-+#define EXCP_BKPT 7
-+#define EXCP_KERNEL_TRAP 8 /* Jumped to kernel code page. */
-+
-
- /* We currently assume float and double are IEEE single and double
- precision respectively.
-@@ -83,6 +86,7 @@
- uint32_t c9_data;
- uint32_t c13_fcse; /* FCSE PID. */
- uint32_t c13_context; /* Context ID. */
-+ uint32_t c13_tls; /* Paul Brook told me to just add this ;) */
- } cp15;
-
- /* exception/interrupt handling */
-@@ -126,6 +130,15 @@
- int cpu_arm_signal_handler(int host_signum, struct siginfo *info,
- void *puc);
-
-+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_tls = (uint32_t)newtls;
-+}
-+#endif
-+
- #define CPSR_M (0x1f)
- #define CPSR_T (1 << 5)
- #define CPSR_F (1 << 6)
-@@ -137,7 +150,11 @@
- #define CPSR_J (1 << 24)
- #define CPSR_IT_0_1 (3 << 25)
- #define CPSR_Q (1 << 27)
--#define CPSR_NZCV (0xf << 28)
-+#define CPSR_V (1 << 28)
-+#define CPSR_C (1 << 29)
-+#define CPSR_Z (1 << 30)
-+#define CPSR_N (1 << 31)
-+#define CPSR_NZCV (CPSR_N | CPSR_Z | CPSR_C | CPSR_V)
-
- #define CACHED_CPSR_BITS (CPSR_T | CPSR_Q | CPSR_NZCV)
- /* Return the current CPSR value. */
-Only in qemu-0.8.0/target-arm: cpu.h~
-diff -ur qemu-0.8.0.orig/target-arm/exec.h qemu-0.8.0/target-arm/exec.h
---- qemu-0.8.0.orig/target-arm/exec.h 2005-12-20 00:51:53.000000000 +0200
-+++ qemu-0.8.0/target-arm/exec.h 2006-07-12 15:23:46.000000000 +0300
-@@ -51,8 +51,6 @@
-
- /* In op_helper.c */
-
--void cpu_lock(void);
--void cpu_unlock(void);
- void helper_set_cp15(CPUState *, uint32_t, uint32_t);
- uint32_t helper_get_cp15(CPUState *, uint32_t);
-
-diff -ur qemu-0.8.0.orig/target-arm/op.c qemu-0.8.0/target-arm/op.c
---- qemu-0.8.0.orig/target-arm/op.c 2005-12-20 00:51:53.000000000 +0200
-+++ qemu-0.8.0/target-arm/op.c 2006-07-12 15:23:46.000000000 +0300
-@@ -885,6 +885,12 @@
- 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. */
-diff -ur qemu-0.8.0.orig/target-arm/translate.c qemu-0.8.0/target-arm/translate.c
---- qemu-0.8.0.orig/target-arm/translate.c 2005-12-20 00:51:53.000000000 +0200
-+++ qemu-0.8.0/target-arm/translate.c 2006-07-12 15:23:46.000000000 +0300
-@@ -2282,6 +2282,7 @@
- s->is_jmp = DISAS_JUMP;
- }
-
-+
- /* generate intermediate code in gen_opc_buf and gen_opparam_buf for
- basic block 'tb'. If search_pc is TRUE, also generate PC
- information for each intermediate instruction. */
-@@ -2316,6 +2317,15 @@
- nb_gen_labels = 0;
- lj = -1;
- do {
-+#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) {
-diff -urN qemu-0.8.1.orig/qemu_spinlock.h qemu-0.8.1/qemu_spinlock.h
---- qemu-0.8.1.orig/qemu_spinlock.h 1970-01-01 02:00:00.000000000 +0200
-+++ qemu-0.8.1/qemu_spinlock.h 2006-06-04 00:59:23.000000000 +0300
-@@ -0,0 +1,182 @@
-+/*
-+ * internal execution defines for qemu
-+ *
-+ * Copyright (c) 2003 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_SPINLOCK_H */
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-11 21:59:49 +0000