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[src/tls-maxphys]: src/sys/external/bsd/sljit/dist/sljit_src Adapt code to co...
details: https://anonhg.NetBSD.org/src/rev/42a88660eeb3
branches: tls-maxphys
changeset: 852922:42a88660eeb3
user: alnsn <alnsn%NetBSD.org@localhost>
date: Sat Oct 06 19:23:02 2012 +0000
description:
Adapt code to compile with -D_KERNEL.
diffstat:
sys/external/bsd/sljit/dist/sljit_src/sljitUtils.c | 305 +++++++++++++++++++++
1 files changed, 305 insertions(+), 0 deletions(-)
diffs (truncated from 309 to 300 lines):
diff -r 0cff14f68203 -r 42a88660eeb3 sys/external/bsd/sljit/dist/sljit_src/sljitUtils.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/external/bsd/sljit/dist/sljit_src/sljitUtils.c Sat Oct 06 19:23:02 2012 +0000
@@ -0,0 +1,305 @@
+/*
+ * Stack-less Just-In-Time compiler
+ *
+ * Copyright 2009-2012 Zoltan Herczeg (hzmester%freemail.hu@localhost). All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ * conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ * of conditions and the following disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) AND CONTRIBUTORS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
+ * SHALL THE COPYRIGHT HOLDER(S) OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* ------------------------------------------------------------------------ */
+/* Locks */
+/* ------------------------------------------------------------------------ */
+
+#if (defined SLJIT_EXECUTABLE_ALLOCATOR && SLJIT_EXECUTABLE_ALLOCATOR) || (defined SLJIT_UTIL_GLOBAL_LOCK && SLJIT_UTIL_GLOBAL_LOCK)
+
+#if (defined SLJIT_SINGLE_THREADED && SLJIT_SINGLE_THREADED)
+
+#if (defined SLJIT_EXECUTABLE_ALLOCATOR && SLJIT_EXECUTABLE_ALLOCATOR)
+
+static SLJIT_INLINE void allocator_grab_lock(void)
+{
+ /* Always successful. */
+}
+
+static SLJIT_INLINE void allocator_release_lock(void)
+{
+ /* Always successful. */
+}
+
+#endif /* SLJIT_EXECUTABLE_ALLOCATOR */
+
+#if (defined SLJIT_UTIL_GLOBAL_LOCK && SLJIT_UTIL_GLOBAL_LOCK)
+
+SLJIT_API_FUNC_ATTRIBUTE void SLJIT_CALL sljit_grab_lock(void)
+{
+ /* Always successful. */
+}
+
+SLJIT_API_FUNC_ATTRIBUTE void SLJIT_CALL sljit_release_lock(void)
+{
+ /* Always successful. */
+}
+
+#endif /* SLJIT_UTIL_GLOBAL_LOCK */
+
+#elif defined(_WIN32) /* SLJIT_SINGLE_THREADED */
+
+#include "windows.h"
+
+#if (defined SLJIT_EXECUTABLE_ALLOCATOR && SLJIT_EXECUTABLE_ALLOCATOR)
+
+static HANDLE allocator_mutex = 0;
+
+static SLJIT_INLINE void allocator_grab_lock(void)
+{
+ /* No idea what to do if an error occures. Static mutexes should never fail... */
+ if (!allocator_mutex)
+ allocator_mutex = CreateMutex(NULL, TRUE, NULL);
+ else
+ WaitForSingleObject(allocator_mutex, INFINITE);
+}
+
+static SLJIT_INLINE void allocator_release_lock(void)
+{
+ ReleaseMutex(allocator_mutex);
+}
+
+#endif /* SLJIT_EXECUTABLE_ALLOCATOR */
+
+#if (defined SLJIT_UTIL_GLOBAL_LOCK && SLJIT_UTIL_GLOBAL_LOCK)
+
+static HANDLE global_mutex = 0;
+
+SLJIT_API_FUNC_ATTRIBUTE void SLJIT_CALL sljit_grab_lock(void)
+{
+ /* No idea what to do if an error occures. Static mutexes should never fail... */
+ if (!global_mutex)
+ global_mutex = CreateMutex(NULL, TRUE, NULL);
+ else
+ WaitForSingleObject(global_mutex, INFINITE);
+}
+
+SLJIT_API_FUNC_ATTRIBUTE void SLJIT_CALL sljit_release_lock(void)
+{
+ ReleaseMutex(global_mutex);
+}
+
+#endif /* SLJIT_UTIL_GLOBAL_LOCK */
+
+#else /* _WIN32 */
+
+#if (defined SLJIT_EXECUTABLE_ALLOCATOR && SLJIT_EXECUTABLE_ALLOCATOR)
+
+#include <pthread.h>
+
+static pthread_mutex_t allocator_mutex = PTHREAD_MUTEX_INITIALIZER;
+
+static SLJIT_INLINE void allocator_grab_lock(void)
+{
+ pthread_mutex_lock(&allocator_mutex);
+}
+
+static SLJIT_INLINE void allocator_release_lock(void)
+{
+ pthread_mutex_unlock(&allocator_mutex);
+}
+
+#endif /* SLJIT_EXECUTABLE_ALLOCATOR */
+
+#if (defined SLJIT_UTIL_GLOBAL_LOCK && SLJIT_UTIL_GLOBAL_LOCK)
+
+#include <pthread.h>
+
+static pthread_mutex_t global_mutex = PTHREAD_MUTEX_INITIALIZER;
+
+SLJIT_API_FUNC_ATTRIBUTE void SLJIT_CALL sljit_grab_lock(void)
+{
+ pthread_mutex_lock(&global_mutex);
+}
+
+SLJIT_API_FUNC_ATTRIBUTE void SLJIT_CALL sljit_release_lock(void)
+{
+ pthread_mutex_unlock(&global_mutex);
+}
+
+#endif /* SLJIT_UTIL_GLOBAL_LOCK */
+
+#endif /* _WIN32 */
+
+/* ------------------------------------------------------------------------ */
+/* Stack */
+/* ------------------------------------------------------------------------ */
+
+#if (defined SLJIT_UTIL_STACK && SLJIT_UTIL_STACK)
+
+#ifdef _KERNEL
+#include <sys/param.h>
+#include <uvm/uvm.h>
+#elif defined(_WIN32)
+#include "windows.h"
+#else
+#include <sys/mman.h>
+#include <unistd.h>
+#endif
+
+/* Planning to make it even more clever in the future. */
+static sljit_w sljit_page_align = 0;
+
+SLJIT_API_FUNC_ATTRIBUTE struct sljit_stack* SLJIT_CALL sljit_allocate_stack(sljit_uw limit, sljit_uw max_limit)
+{
+ struct sljit_stack *stack;
+ union {
+ void *ptr;
+ sljit_uw uw;
+ } base;
+#ifdef _WIN32
+ SYSTEM_INFO si;
+#endif
+#ifdef _KERNEL
+ vaddr_t v;
+#endif
+
+ if (limit > max_limit || limit < 1)
+ return NULL;
+
+#ifdef _WIN32
+ if (!sljit_page_align) {
+ GetSystemInfo(&si);
+ sljit_page_align = si.dwPageSize - 1;
+ }
+#else
+ if (!sljit_page_align) {
+#ifdef _KERNEL
+ sljit_page_align = PAGE_SIZE;
+#else
+ sljit_page_align = sysconf(_SC_PAGESIZE);
+#endif
+ /* Should never happen. */
+ if (sljit_page_align < 0)
+ sljit_page_align = 4096;
+ sljit_page_align--;
+ }
+#endif
+
+ /* Align limit and max_limit. */
+ max_limit = (max_limit + sljit_page_align) & ~sljit_page_align;
+
+ stack = (struct sljit_stack*)SLJIT_MALLOC(sizeof(struct sljit_stack));
+ if (!stack)
+ return NULL;
+
+#ifdef _KERNEL
+ v = uvm_km_alloc(kernel_map, max_limit, PAGE_SIZE, UVM_KMF_WIRED|UVM_KMF_ZERO);
+ base.ptr = (void *)v;
+ if (base.ptr == NULL) {
+ SLJIT_FREE(stack);
+ return NULL;
+ }
+ stack->base = base.uw;
+ stack->limit = stack->base + limit;
+ stack->max_limit = stack->base + max_limit;
+#elif defined(_WIN32)
+ base.ptr = VirtualAlloc(0, max_limit, MEM_RESERVE, PAGE_READWRITE);
+ if (!base.ptr) {
+ SLJIT_FREE(stack);
+ return NULL;
+ }
+ stack->base = base.uw;
+ stack->limit = stack->base;
+ stack->max_limit = stack->base + max_limit;
+ if (sljit_stack_resize(stack, stack->base + limit)) {
+ sljit_free_stack(stack);
+ return NULL;
+ }
+#else
+ base.ptr = mmap(0, max_limit, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON, -1, 0);
+ if (base.ptr == MAP_FAILED) {
+ SLJIT_FREE(stack);
+ return NULL;
+ }
+ stack->base = base.uw;
+ stack->limit = stack->base + limit;
+ stack->max_limit = stack->base + max_limit;
+#endif
+ stack->top = stack->base;
+ return stack;
+}
+
+#undef PAGE_ALIGN
+
+SLJIT_API_FUNC_ATTRIBUTE void SLJIT_CALL sljit_free_stack(struct sljit_stack* stack)
+{
+#ifdef _KERNEL
+ uvm_km_free(kernel_map, (vaddr_t)stack->base,
+ stack->max_limit - stack->base, UVM_KMF_WIRED);
+#elif defined(_WIN32)
+ VirtualFree((void*)stack->base, 0, MEM_RELEASE);
+#else
+ munmap((void*)stack->base, stack->max_limit - stack->base);
+#endif
+ SLJIT_FREE(stack);
+}
+
+SLJIT_API_FUNC_ATTRIBUTE sljit_w SLJIT_CALL sljit_stack_resize(struct sljit_stack* stack, sljit_uw new_limit)
+{
+ sljit_uw aligned_old_limit;
+ sljit_uw aligned_new_limit;
+
+ if ((new_limit > stack->max_limit) || (new_limit < stack->base))
+ return -1;
+#ifdef _WIN32
+ aligned_new_limit = (new_limit + sljit_page_align) & ~sljit_page_align;
+ aligned_old_limit = (stack->limit + sljit_page_align) & ~sljit_page_align;
+ if (aligned_new_limit != aligned_old_limit) {
+ if (aligned_new_limit > aligned_old_limit) {
+ if (!VirtualAlloc((void*)aligned_old_limit, aligned_new_limit - aligned_old_limit, MEM_COMMIT, PAGE_READWRITE))
+ return -1;
+ }
+ else {
+ if (!VirtualFree((void*)aligned_new_limit, aligned_old_limit - aligned_new_limit, MEM_DECOMMIT))
+ return -1;
+ }
+ }
+ stack->limit = new_limit;
+ return 0;
+#else
+ if (new_limit >= stack->limit) {
+ stack->limit = new_limit;
+ return 0;
+ }
+ aligned_new_limit = (new_limit + sljit_page_align) & ~sljit_page_align;
+ aligned_old_limit = (stack->limit + sljit_page_align) & ~sljit_page_align;
+ /* If madvise is available, we release the unnecessary space. */
+#if defined(POSIX_MADV_DONTNEED)
+ if (aligned_new_limit < aligned_old_limit)
+ posix_madvise((void*)aligned_new_limit, aligned_old_limit - aligned_new_limit, POSIX_MADV_DONTNEED);
+#elif defined(MADV_DONTNEED)
+ if (aligned_new_limit < aligned_old_limit)
+ madvise((void*)aligned_new_limit, aligned_old_limit - aligned_new_limit, MADV_DONTNEED);
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