#include "serialize.h"
#include "snapshot.h"
#include "top.h"
-#include "utils.h"
#include "v8threads.h"
#include "version.h"
#include "ic-inl.h"
#include "runtime.h"
#include "stub-cache.h"
-#include "utils.h"
namespace v8 {
namespace internal {
namespace internal {
-// Implementation is from "Hacker's Delight" by Henry S. Warren, Jr.,
-// figure 3-3, page 48, where the function is called clp2.
-uint32_t RoundUpToPowerOf2(uint32_t x) {
- ASSERT(x <= 0x80000000u);
- x = x - 1;
- x = x | (x >> 1);
- x = x | (x >> 2);
- x = x | (x >> 4);
- x = x | (x >> 8);
- x = x | (x >> 16);
- return x + 1;
-}
-
-
-// Thomas Wang, Integer Hash Functions.
-// http://www.concentric.net/~Ttwang/tech/inthash.htm
-uint32_t ComputeIntegerHash(uint32_t key) {
- uint32_t hash = key;
- hash = ~hash + (hash << 15); // hash = (hash << 15) - hash - 1;
- hash = hash ^ (hash >> 12);
- hash = hash + (hash << 2);
- hash = hash ^ (hash >> 4);
- hash = hash * 2057; // hash = (hash + (hash << 3)) + (hash << 11);
- hash = hash ^ (hash >> 16);
- return hash;
-}
-
-
void PrintF(const char* format, ...) {
va_list arguments;
va_start(arguments, format);
}
-int TenToThe(int exponent) {
- ASSERT(exponent <= 9);
- ASSERT(exponent >= 1);
- int answer = 10;
- for (int i = 1; i < exponent; i++) answer *= 10;
- return answer;
-}
-
} } // namespace v8::internal
#include <stdlib.h>
#include <string.h>
+#include "checks.h"
+
namespace v8 {
namespace internal {
// Returns the smallest power of two which is >= x. If you pass in a
// number that is already a power of two, it is returned as is.
-uint32_t RoundUpToPowerOf2(uint32_t x);
+// Implementation is from "Hacker's Delight" by Henry S. Warren, Jr.,
+// figure 3-3, page 48, where the function is called clp2.
+static inline uint32_t RoundUpToPowerOf2(uint32_t x) {
+ ASSERT(x <= 0x80000000u);
+ x = x - 1;
+ x = x | (x >> 1);
+ x = x | (x >> 2);
+ x = x | (x >> 4);
+ x = x | (x >> 8);
+ x = x | (x >> 16);
+ return x + 1;
+}
+
template <typename T>
// ----------------------------------------------------------------------------
// Hash function.
-uint32_t ComputeIntegerHash(uint32_t key);
-
-
-// ----------------------------------------------------------------------------
-// I/O support.
-
-#if __GNUC__ >= 4
-// On gcc we can ask the compiler to check the types of %d-style format
-// specifiers and their associated arguments. TODO(erikcorry) fix this
-// so it works on MacOSX.
-#if defined(__MACH__) && defined(__APPLE__)
-#define PRINTF_CHECKING
-#else // MacOsX.
-#define PRINTF_CHECKING __attribute__ ((format (printf, 1, 2)))
-#endif
-#else
-#define PRINTF_CHECKING
-#endif
-
-// Our version of printf().
-void PRINTF_CHECKING PrintF(const char* format, ...);
-
-// Our version of fflush.
-void Flush();
-
-
-// Read a line of characters after printing the prompt to stdout. The resulting
-// char* needs to be disposed off with DeleteArray by the caller.
-char* ReadLine(const char* prompt);
-
-
-// Read and return the raw bytes in a file. the size of the buffer is returned
-// in size.
-// The returned buffer must be freed by the caller.
-byte* ReadBytes(const char* filename, int* size, bool verbose = true);
-
-
-// Write size chars from str to the file given by filename.
-// The file is overwritten. Returns the number of chars written.
-int WriteChars(const char* filename,
- const char* str,
- int size,
- bool verbose = true);
-
-
-// Write size bytes to the file given by filename.
-// The file is overwritten. Returns the number of bytes written.
-int WriteBytes(const char* filename,
- const byte* bytes,
- int size,
- bool verbose = true);
-
-
-// Write the C code
-// const char* <varname> = "<str>";
-// const int <varname>_len = <len>;
-// to the file given by filename. Only the first len chars are written.
-int WriteAsCFile(const char* filename, const char* varname,
- const char* str, int size, bool verbose = true);
+// Thomas Wang, Integer Hash Functions.
+// http://www.concentric.net/~Ttwang/tech/inthash.htm
+static inline uint32_t ComputeIntegerHash(uint32_t key) {
+ uint32_t hash = key;
+ hash = ~hash + (hash << 15); // hash = (hash << 15) - hash - 1;
+ hash = hash ^ (hash >> 12);
+ hash = hash + (hash << 2);
+ hash = hash ^ (hash >> 4);
+ hash = hash * 2057; // hash = (hash + (hash << 3)) + (hash << 11);
+ hash = hash ^ (hash >> 16);
+ return hash;
+}
// ----------------------------------------------------------------------------
};
-// A temporary assignment sets a (non-local) variable to a value on
-// construction and resets it the value on destruction.
-template <typename T>
-class TempAssign {
- public:
- TempAssign(T* var, T value): var_(var), old_value_(*var) {
- *var = value;
- }
-
- ~TempAssign() { *var_ = old_value_; }
-
- private:
- T* var_;
- T old_value_;
-};
-
-
template <typename T, int kSize>
class EmbeddedVector : public Vector<T> {
public:
return Vector<char>(data, (length < max) ? length : max);
}
-template <typename T>
-inline Vector< Handle<Object> > HandleVector(v8::internal::Handle<T>* elms,
- int length) {
- return Vector< Handle<Object> >(
- reinterpret_cast<v8::internal::Handle<Object>*>(elms), length);
-}
-
/*
* A class that collects values into a backing store.
};
-// Simple support to read a file into a 0-terminated C-string.
-// The returned buffer must be freed by the caller.
-// On return, *exits tells whether the file existed.
-Vector<const char> ReadFile(const char* filename,
- bool* exists,
- bool verbose = true);
-
-
-// Simple wrapper that allows an ExternalString to refer to a
-// Vector<const char>. Doesn't assume ownership of the data.
-class AsciiStringAdapter: public v8::String::ExternalAsciiStringResource {
- public:
- explicit AsciiStringAdapter(Vector<const char> data) : data_(data) {}
-
- virtual const char* data() const { return data_.start(); }
-
- virtual size_t length() const { return data_.length(); }
-
- private:
- Vector<const char> data_;
-};
-
-
-// Helper class for building result strings in a character buffer. The
-// purpose of the class is to use safe operations that checks the
-// buffer bounds on all operations in debug mode.
-class StringBuilder {
- public:
- // Create a string builder with a buffer of the given size. The
- // buffer is allocated through NewArray<char> and must be
- // deallocated by the caller of Finalize().
- explicit StringBuilder(int size);
-
- StringBuilder(char* buffer, int size)
- : buffer_(buffer, size), position_(0) { }
-
- ~StringBuilder() { if (!is_finalized()) Finalize(); }
-
- int size() const { return buffer_.length(); }
-
- // Get the current position in the builder.
- int position() const {
- ASSERT(!is_finalized());
- return position_;
- }
-
- // Reset the position.
- void Reset() { position_ = 0; }
-
- // Add a single character to the builder. It is not allowed to add
- // 0-characters; use the Finalize() method to terminate the string
- // instead.
- void AddCharacter(char c) {
- ASSERT(c != '\0');
- ASSERT(!is_finalized() && position_ < buffer_.length());
- buffer_[position_++] = c;
- }
-
- // Add an entire string to the builder. Uses strlen() internally to
- // compute the length of the input string.
- void AddString(const char* s);
-
- // Add the first 'n' characters of the given string 's' to the
- // builder. The input string must have enough characters.
- void AddSubstring(const char* s, int n);
-
- // Add formatted contents to the builder just like printf().
- void AddFormatted(const char* format, ...);
-
- // Add character padding to the builder. If count is non-positive,
- // nothing is added to the builder.
- void AddPadding(char c, int count);
-
- // Finalize the string by 0-terminating it and returning the buffer.
- char* Finalize();
-
- private:
- Vector<char> buffer_;
- int position_;
-
- bool is_finalized() const { return position_ < 0; }
-
- DISALLOW_IMPLICIT_CONSTRUCTORS(StringBuilder);
-};
-
-
-// Custom memcpy implementation for platforms where the standard version
-// may not be good enough.
-// TODO(lrn): Check whether some IA32 platforms should be excluded.
-#if defined(V8_TARGET_ARCH_IA32)
-
-// TODO(lrn): Extend to other platforms as needed.
-
-typedef void (*MemCopyFunction)(void* dest, const void* src, size_t size);
-
-// Implemented in codegen-<arch>.cc.
-MemCopyFunction CreateMemCopyFunction();
-
-// Copy memory area to disjoint memory area.
-static inline void MemCopy(void* dest, const void* src, size_t size) {
- static MemCopyFunction memcopy = CreateMemCopyFunction();
- (*memcopy)(dest, src, size);
-#ifdef DEBUG
- CHECK_EQ(0, memcmp(dest, src, size));
-#endif
-}
-
-
-// Limit below which the extra overhead of the MemCopy function is likely
-// to outweigh the benefits of faster copying.
-// TODO(lrn): Try to find a more precise value.
-static const int kMinComplexMemCopy = 64;
-
-#else // V8_TARGET_ARCH_IA32
-
-static inline void MemCopy(void* dest, const void* src, size_t size) {
- memcpy(dest, src, size);
-}
-
-static const int kMinComplexMemCopy = 256;
-
-#endif // V8_TARGET_ARCH_IA32
-
-
-// Copy from ASCII/16bit chars to ASCII/16bit chars.
-template <typename sourcechar, typename sinkchar>
-static inline void CopyChars(sinkchar* dest, const sourcechar* src, int chars) {
- sinkchar* limit = dest + chars;
-#ifdef V8_HOST_CAN_READ_UNALIGNED
- if (sizeof(*dest) == sizeof(*src)) {
- if (chars >= static_cast<int>(kMinComplexMemCopy / sizeof(*dest))) {
- MemCopy(dest, src, chars * sizeof(*dest));
- return;
- }
- // Number of characters in a uintptr_t.
- static const int kStepSize = sizeof(uintptr_t) / sizeof(*dest); // NOLINT
- while (dest <= limit - kStepSize) {
- *reinterpret_cast<uintptr_t*>(dest) =
- *reinterpret_cast<const uintptr_t*>(src);
- dest += kStepSize;
- src += kStepSize;
- }
- }
-#endif
- while (dest < limit) {
- *dest++ = static_cast<sinkchar>(*src++);
- }
-}
-
-
// Compare ASCII/16bit chars to ASCII/16bit chars.
template <typename lchar, typename rchar>
static inline int CompareChars(const lchar* lhs, const rchar* rhs, int chars) {
}
-template <typename T>
-static inline void MemsetPointer(T** dest, T* value, int counter) {
-#if defined(V8_HOST_ARCH_IA32)
-#define STOS "stosl"
-#elif defined(V8_HOST_ARCH_X64)
-#define STOS "stosq"
-#endif
-
-#if defined(__GNUC__) && defined(STOS)
- asm volatile(
- "cld;"
- "rep ; " STOS
- : "+&c" (counter), "+&D" (dest)
- : "a" (value)
- : "memory", "cc");
-#else
- for (int i = 0; i < counter; i++) {
- dest[i] = value;
- }
-#endif
-
-#undef STOS
-}
-
-
-// Copies data from |src| to |dst|. The data spans MUST not overlap.
-inline void CopyWords(Object** dst, Object** src, int num_words) {
- ASSERT(Min(dst, src) + num_words <= Max(dst, src));
- ASSERT(num_words > 0);
-
- // Use block copying memcpy if the segment we're copying is
- // enough to justify the extra call/setup overhead.
- static const int kBlockCopyLimit = 16;
-
- if (num_words >= kBlockCopyLimit) {
- memcpy(dst, src, num_words * kPointerSize);
- } else {
- int remaining = num_words;
- do {
- remaining--;
- *dst++ = *src++;
- } while (remaining > 0);
- }
-}
-
-
// Calculate 10^exponent.
-int TenToThe(int exponent);
+static inline int TenToThe(int exponent) {
+ ASSERT(exponent <= 9);
+ ASSERT(exponent >= 1);
+ int answer = 10;
+ for (int i = 1; i < exponent; i++) answer *= 10;
+ return answer;
+}
// The type-based aliasing rule allows the compiler to assume that pointers of
#include "globals.h"
#include "checks.h"
#include "allocation.h"
-#include "utils.h"
+#include "v8utils.h"
#include "flags.h"
// Objects & heap
--- /dev/null
+// Copyright 2010 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * 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.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived
+// from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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
+// OWNER 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.
+
+#ifndef V8_V8UTILS_H_
+#define V8_V8UTILS_H_
+
+#include "utils.h"
+
+namespace v8 {
+namespace internal {
+
+// ----------------------------------------------------------------------------
+// I/O support.
+
+#if __GNUC__ >= 4
+// On gcc we can ask the compiler to check the types of %d-style format
+// specifiers and their associated arguments. TODO(erikcorry) fix this
+// so it works on MacOSX.
+#if defined(__MACH__) && defined(__APPLE__)
+#define PRINTF_CHECKING
+#else // MacOsX.
+#define PRINTF_CHECKING __attribute__ ((format (printf, 1, 2)))
+#endif
+#else
+#define PRINTF_CHECKING
+#endif
+
+// Our version of printf().
+void PRINTF_CHECKING PrintF(const char* format, ...);
+
+// Our version of fflush.
+void Flush();
+
+
+// Read a line of characters after printing the prompt to stdout. The resulting
+// char* needs to be disposed off with DeleteArray by the caller.
+char* ReadLine(const char* prompt);
+
+
+// Read and return the raw bytes in a file. the size of the buffer is returned
+// in size.
+// The returned buffer must be freed by the caller.
+byte* ReadBytes(const char* filename, int* size, bool verbose = true);
+
+
+// Write size chars from str to the file given by filename.
+// The file is overwritten. Returns the number of chars written.
+int WriteChars(const char* filename,
+ const char* str,
+ int size,
+ bool verbose = true);
+
+
+// Write size bytes to the file given by filename.
+// The file is overwritten. Returns the number of bytes written.
+int WriteBytes(const char* filename,
+ const byte* bytes,
+ int size,
+ bool verbose = true);
+
+
+// Write the C code
+// const char* <varname> = "<str>";
+// const int <varname>_len = <len>;
+// to the file given by filename. Only the first len chars are written.
+int WriteAsCFile(const char* filename, const char* varname,
+ const char* str, int size, bool verbose = true);
+
+
+// Data structures
+
+template <typename T>
+inline Vector< Handle<Object> > HandleVector(v8::internal::Handle<T>* elms,
+ int length) {
+ return Vector< Handle<Object> >(
+ reinterpret_cast<v8::internal::Handle<Object>*>(elms), length);
+}
+
+// Memory
+
+// Copies data from |src| to |dst|. The data spans MUST not overlap.
+inline void CopyWords(Object** dst, Object** src, int num_words) {
+ ASSERT(Min(dst, src) + num_words <= Max(dst, src));
+ ASSERT(num_words > 0);
+
+ // Use block copying memcpy if the segment we're copying is
+ // enough to justify the extra call/setup overhead.
+ static const int kBlockCopyLimit = 16;
+
+ if (num_words >= kBlockCopyLimit) {
+ memcpy(dst, src, num_words * kPointerSize);
+ } else {
+ int remaining = num_words;
+ do {
+ remaining--;
+ *dst++ = *src++;
+ } while (remaining > 0);
+ }
+}
+
+
+template <typename T>
+static inline void MemsetPointer(T** dest, T* value, int counter) {
+#if defined(V8_HOST_ARCH_IA32)
+#define STOS "stosl"
+#elif defined(V8_HOST_ARCH_X64)
+#define STOS "stosq"
+#endif
+
+#if defined(__GNUC__) && defined(STOS)
+ asm volatile(
+ "cld;"
+ "rep ; " STOS
+ : "+&c" (counter), "+&D" (dest)
+ : "a" (value)
+ : "memory", "cc");
+#else
+ for (int i = 0; i < counter; i++) {
+ dest[i] = value;
+ }
+#endif
+
+#undef STOS
+}
+
+
+// Simple wrapper that allows an ExternalString to refer to a
+// Vector<const char>. Doesn't assume ownership of the data.
+class AsciiStringAdapter: public v8::String::ExternalAsciiStringResource {
+ public:
+ explicit AsciiStringAdapter(Vector<const char> data) : data_(data) {}
+
+ virtual const char* data() const { return data_.start(); }
+
+ virtual size_t length() const { return data_.length(); }
+
+ private:
+ Vector<const char> data_;
+};
+
+
+// Simple support to read a file into a 0-terminated C-string.
+// The returned buffer must be freed by the caller.
+// On return, *exits tells whether the file existed.
+Vector<const char> ReadFile(const char* filename,
+ bool* exists,
+ bool verbose = true);
+
+
+// Helper class for building result strings in a character buffer. The
+// purpose of the class is to use safe operations that checks the
+// buffer bounds on all operations in debug mode.
+class StringBuilder {
+ public:
+ // Create a string builder with a buffer of the given size. The
+ // buffer is allocated through NewArray<char> and must be
+ // deallocated by the caller of Finalize().
+ explicit StringBuilder(int size);
+
+ StringBuilder(char* buffer, int size)
+ : buffer_(buffer, size), position_(0) { }
+
+ ~StringBuilder() { if (!is_finalized()) buffer_.Dispose(); }
+
+ int size() const { return buffer_.length(); }
+
+ // Get the current position in the builder.
+ int position() const {
+ ASSERT(!is_finalized());
+ return position_;
+ }
+
+ // Reset the position.
+ void Reset() { position_ = 0; }
+
+ // Add a single character to the builder. It is not allowed to add
+ // 0-characters; use the Finalize() method to terminate the string
+ // instead.
+ void AddCharacter(char c) {
+ ASSERT(c != '\0');
+ ASSERT(!is_finalized() && position_ < buffer_.length());
+ buffer_[position_++] = c;
+ }
+
+ // Add an entire string to the builder. Uses strlen() internally to
+ // compute the length of the input string.
+ void AddString(const char* s);
+
+ // Add the first 'n' characters of the given string 's' to the
+ // builder. The input string must have enough characters.
+ void AddSubstring(const char* s, int n);
+
+ // Add formatted contents to the builder just like printf().
+ void AddFormatted(const char* format, ...);
+
+ // Add character padding to the builder. If count is non-positive,
+ // nothing is added to the builder.
+ void AddPadding(char c, int count);
+
+ // Finalize the string by 0-terminating it and returning the buffer.
+ char* Finalize();
+
+ private:
+ Vector<char> buffer_;
+ int position_;
+
+ bool is_finalized() const { return position_ < 0; }
+
+ DISALLOW_IMPLICIT_CONSTRUCTORS(StringBuilder);
+};
+
+
+// Custom memcpy implementation for platforms where the standard version
+// may not be good enough.
+#if defined(V8_TARGET_ARCH_IA32)
+
+// The default memcpy on ia32 architectures is generally not as efficient
+// as possible. (If any further ia32 platforms are introduced where the
+// memcpy function is efficient, exclude them from this branch).
+
+typedef void (*MemCopyFunction)(void* dest, const void* src, size_t size);
+
+// Implemented in codegen-<arch>.cc.
+MemCopyFunction CreateMemCopyFunction();
+
+// Copy memory area to disjoint memory area.
+static inline void MemCopy(void* dest, const void* src, size_t size) {
+ static MemCopyFunction memcopy = CreateMemCopyFunction();
+ (*memcopy)(dest, src, size);
+#ifdef DEBUG
+ CHECK_EQ(0, memcmp(dest, src, size));
+#endif
+}
+
+// Limit below which the extra overhead of the MemCopy function is likely
+// to outweigh the benefits of faster copying.
+static const int kMinComplexMemCopy = 64;
+
+#else // V8_TARGET_ARCH_IA32
+
+static inline void MemCopy(void* dest, const void* src, size_t size) {
+ memcpy(dest, src, size);
+}
+
+static const int kMinComplexMemCopy = 256;
+
+#endif // V8_TARGET_ARCH_IA32
+
+
+// Copy from ASCII/16bit chars to ASCII/16bit chars.
+template <typename sourcechar, typename sinkchar>
+static inline void CopyChars(sinkchar* dest, const sourcechar* src, int chars) {
+ sinkchar* limit = dest + chars;
+#ifdef V8_HOST_CAN_READ_UNALIGNED
+ if (sizeof(*dest) == sizeof(*src)) {
+ if (chars >= static_cast<int>(kMinComplexMemCopy / sizeof(*dest))) {
+ MemCopy(dest, src, chars * sizeof(*dest));
+ return;
+ }
+ // Number of characters in a uintptr_t.
+ static const int kStepSize = sizeof(uintptr_t) / sizeof(*dest); // NOLINT
+ while (dest <= limit - kStepSize) {
+ *reinterpret_cast<uintptr_t*>(dest) =
+ *reinterpret_cast<const uintptr_t*>(src);
+ dest += kStepSize;
+ src += kStepSize;
+ }
+ }
+#endif
+ while (dest < limit) {
+ *dest++ = static_cast<sinkchar>(*src++);
+ }
+}
+
+} } // namespace v8::internal
+
+#endif // V8_V8UTILS_H_
#include "ic-inl.h"
#include "runtime.h"
#include "stub-cache.h"
-#include "utils.h"
namespace v8 {
namespace internal {
projects / platform / upstream / v8.git / commitdiff