Delete old x86 validator.

src/trusted/validator/x86/ncinstbuffer.c

-/*
- * Copyright (c) 2012 The Native Client Authors. All rights reserved.
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#include <stdio.h>
-
-#include "native_client/src/shared/platform/nacl_check.h"
-#include "native_client/src/trusted/validator/x86/ncinstbuffer.h"
-
-/* To turn on debugging of instruction decoding, change value of
- * DEBUGGING to 1.
- */
-#define DEBUGGING 0
-
-#include "native_client/src/shared/utils/debugging.h"
-
-#include "native_client/src/trusted/validator/x86/ncinstbuffer_inl.c"
-
-void NCRemainingMemoryAdvance(NCRemainingMemory* memory) {
-  NCRemainingMemoryAdvanceInline(memory);
-}
-
-void NCRemainingMemoryReset(NCRemainingMemory* memory) {
-  NCRemainingMemoryResetInline(memory);
-}
-
-const char* NCRemainingMemoryErrorMessage(NCRemainingMemoryError error) {
-  switch (error) {
-    case NCRemainingMemoryOverflow:
-      return "Read past end of memory segment occurred.";
-    case NCInstBufferOverflow:
-      return "Internal error: instruction buffer overflow.";
-    case NCUnknownMemoryError:
-    default:
-      return "Unknown memory error occurred.";
-  }
-}
-
-void NCRemainingMemoryReportError(NCRemainingMemoryError error,
-                                  NCRemainingMemory* memory) {
-  fprintf(stdout, "%s\n", NCRemainingMemoryErrorMessage(error));
-}
-
-void NCRemainingMemoryInit(uint8_t* memory_base, NaClMemorySize size,
-                           NCRemainingMemory* memory) {
-  memory->mpc = memory_base;
-  memory->cur_pos = memory->mpc;
-  memory->mlimit = memory_base + size;
-  memory->next_byte = NCRemainingMemoryPeekInline(memory);
-  memory->error_fn = NCRemainingMemoryReportError;
-  memory->error_fn_state = NULL;
-  NCRemainingMemoryAdvanceInline(memory);
-}
-
-uint8_t NCRemainingMemoryLookahead(NCRemainingMemory* memory, ssize_t n) {
-  return NCRemainingMemoryLookaheadInline(memory, n);
-}
-
-uint8_t NCRemainingMemoryRead(NCRemainingMemory* memory) {
-  return NCRemainingMemoryReadInline(memory);
-}
-
-void NCInstBytesInitMemory(NCInstBytes* bytes, NCRemainingMemory* memory) {
-#if NCBUF_CLEAR_CACHE
-  int i;
-  for (i = 0; i < MAX_INST_LENGTH; ++i) {
-    bytes->byte[i] = 0;
-  }
-#endif
-  bytes->memory = memory;
-  bytes->length = 0;
-}
-
-void NCInstBytesReset(NCInstBytes* buffer) {
-  NCInstBytesResetInline(buffer);
-}
-
-void NCInstBytesInit(NCInstBytes* buffer) {
-  NCInstBytesInitInline(buffer);
-}
-
-uint8_t NCInstBytesPeek(NCInstBytes* bytes, ssize_t n) {
-  return NCInstBytesPeekInline(bytes, n);
-}
-
-uint8_t NCInstByte(NCInstBytes* bytes, ssize_t n) {
-  return NCInstByteInline(bytes, n);
-}
-
-uint8_t NCInstBytesRead(NCInstBytes* bytes) {
-  return NCInstBytesReadInline(bytes);
-}
-
-void NCInstBytesReadBytes(ssize_t n, NCInstBytes* bytes) {
-  NCInstBytesReadBytesInline(n, bytes);
-}
-
-#if NCBUF_CLEAR_CACHE
-#define NCBUF_BYTES_LENGTH(bytes) MAX_INST_LENGTH
-#else
-#define NCBUF_BYTES_LENGTH(bytes) (bytes)->length
-#endif
-
-static INLINE void NCInstBytesPtrInitPos(
-    NCInstBytesPtr* ptr, const NCInstBytes* bytes, int pos) {
-  ptr->bytes = bytes;
-  if (pos <= NCBUF_BYTES_LENGTH(bytes)) {
-    ptr->pos = (uint8_t) pos;
-  } else {
-    bytes->memory->error_fn(NCInstBufferOverflow, bytes->memory);
-    ptr->pos = bytes->length;
-  }
-}
-
-void NCInstBytesPtrInit(NCInstBytesPtr* ptr, const NCInstBytes* bytes) {
-  NCInstBytesPtrInitPos(ptr, bytes, 0);
-}
-
-void NCInstBytesPtrInitInc(NCInstBytesPtr* ptr, const NCInstBytesPtr* base,
-                           int pos) {
-  NCInstBytesPtrInitPos(ptr, base->bytes, base->pos + pos);
-}
-
-uint8_t NCInstBytesPos(const NCInstBytesPtr* ptr) {
-  return ptr->pos;
-}
-
-uint8_t NCInstBytesByte(const NCInstBytesPtr* ptr, int n) {
-  return NCInstBytesByteInline(ptr, n);
-}
-
-int32_t NCInstBytesInt32(const NCInstBytesPtr* ptr, int num_bytes) {
-  switch (num_bytes) {
-    case 1:
-      return (int8_t) NCInstBytesByteInline(ptr, 0);
-    case 2:
-      return (int16_t) (NCInstBytesByteInline(ptr, 0) +
-                        (NCInstBytesByteInline(ptr, 1) << 8));
-    case 3:
-      /* Note: Handle special case of Iw, Ib in 32 bit validator. */
-      return (int32_t) (NCInstBytesByteInline(ptr, 0) +
-                        (NCInstBytesByteInline(ptr, 1) << 8) +
-                        (NCInstBytesByteInline(ptr, 2) << 16));
-    case 4:
-      return (int32_t) (NCInstBytesByteInline(ptr, 0) +
-                        (NCInstBytesByteInline(ptr, 1) << 8) +
-                        (NCInstBytesByteInline(ptr, 2) << 16) +
-                        (NCInstBytesByteInline(ptr, 3) << 24));
-    default:
-      CHECK(0); /* Fail -- should not happen. */
-      return -1;
-  }
-}
-
-int64_t NCInstBytesInt64(const NCInstBytesPtr* ptr, int num_bytes) {
-  switch (num_bytes) {
-    case 1:
-    case 2:
-    case 3: /* Handle special case of Iw, Ib in 32 bit validator. */
-    case 4:
-      return (int64_t) NCInstBytesInt32(ptr, num_bytes);
-    case 6: {
-      /* Handle special case of 48-bit pointers in 32 bit validator. */
-      NCInstBytesPtr ptr_plus_2;
-      NCInstBytesPtrInitInc(&ptr_plus_2, ptr, 2);
-      return ((int64_t) (NCInstBytesInt32(&ptr_plus_2, 2)) << 32) |
-          ((int64_t) (NCInstBytesInt32(ptr, 4)));
-    }
-    case 8: {
-      NCInstBytesPtr ptr_plus_4;
-      NCInstBytesPtrInitInc(&ptr_plus_4, ptr, 4);
-      return ((int64_t) (NCInstBytesInt32(&ptr_plus_4, 4)) << 32) |
-          ((int64_t) (NCInstBytesInt32(ptr, 4)));
-    }
-    default:
-      CHECK(0); /* Fail -- should not happen. */
-      return -1;
-  }
-}
-
-void NCInstBytesAdvance(NCInstBytesPtr* ptr, int n) {
-  int index = ptr->pos + n;
-  if (index < NCBUF_BYTES_LENGTH(ptr->bytes)) {
-    ptr->pos = index;
-  } else {
-    ptr->bytes->memory->error_fn(NCInstBufferOverflow, ptr->bytes->memory);
-  }
-}
-
-int NCInstBytesLength(const NCInstBytesPtr* ptr) {
-  return (int) ptr->bytes->length - (int) ptr->pos;
-}