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-rw-r--r--src/libdw/memory-access.h272
1 files changed, 0 insertions, 272 deletions
diff --git a/src/libdw/memory-access.h b/src/libdw/memory-access.h
deleted file mode 100644
index a53f7912..00000000
--- a/src/libdw/memory-access.h
+++ /dev/null
@@ -1,272 +0,0 @@
-/* Unaligned memory access functionality.
- Copyright (C) 2000-2014 Red Hat, Inc.
- This file is part of elfutils.
- Written by Ulrich Drepper <drepper@redhat.com>, 2001.
-
- This file is free software; you can redistribute it and/or modify
- it under the terms of either
-
- * the GNU Lesser General Public License as published by the Free
- Software Foundation; either version 3 of the License, or (at
- your option) any later version
-
- or
-
- * the GNU General Public License as published by the Free
- Software Foundation; either version 2 of the License, or (at
- your option) any later version
-
- or both in parallel, as here.
-
- elfutils 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
- General Public License for more details.
-
- You should have received copies of the GNU General Public License and
- the GNU Lesser General Public License along with this program. If
- not, see <http://www.gnu.org/licenses/>. */
-
-#ifndef _MEMORY_ACCESS_H
-#define _MEMORY_ACCESS_H 1
-
-#include <byteswap.h>
-#include <limits.h>
-#include <stdint.h>
-
-
-/* Number decoding macros. See 7.6 Variable Length Data. */
-
-#define len_leb128(var) ((8 * sizeof (var) + 6) / 7)
-
-static inline size_t
-__libdw_max_len_leb128 (const unsigned char *addr, const unsigned char *end)
-{
- const size_t type_len = len_leb128 (uint64_t);
- const size_t pointer_len = likely (addr < end) ? end - addr : 0;
- return likely (type_len <= pointer_len) ? type_len : pointer_len;
-}
-
-#define get_uleb128_step(var, addr, nth) \
- do { \
- unsigned char __b = *(addr)++; \
- (var) |= (typeof (var)) (__b & 0x7f) << ((nth) * 7); \
- if (likely ((__b & 0x80) == 0)) \
- return (var); \
- } while (0)
-
-static inline uint64_t
-__libdw_get_uleb128 (const unsigned char **addrp, const unsigned char *end)
-{
- uint64_t acc = 0;
-
- /* Unroll the first step to help the compiler optimize
- for the common single-byte case. */
- get_uleb128_step (acc, *addrp, 0);
-
- const size_t max = __libdw_max_len_leb128 (*addrp - 1, end);
- for (size_t i = 1; i < max; ++i)
- get_uleb128_step (acc, *addrp, i);
- /* Other implementations set VALUE to UINT_MAX in this
- case. So we better do this as well. */
- return UINT64_MAX;
-}
-
-/* Note, addr needs to me smaller than end. */
-#define get_uleb128(var, addr, end) ((var) = __libdw_get_uleb128 (&(addr), end))
-
-/* The signed case is similar, but we sign-extend the result. */
-
-#define get_sleb128_step(var, addr, nth) \
- do { \
- unsigned char __b = *(addr)++; \
- if (likely ((__b & 0x80) == 0)) \
- { \
- struct { signed int i:7; } __s = { .i = __b }; \
- (var) |= (typeof (var)) __s.i * ((typeof (var)) 1 << ((nth) * 7)); \
- return (var); \
- } \
- (var) |= (typeof (var)) (__b & 0x7f) << ((nth) * 7); \
- } while (0)
-
-static inline int64_t
-__libdw_get_sleb128 (const unsigned char **addrp, const unsigned char *end)
-{
- int64_t acc = 0;
-
- /* Unroll the first step to help the compiler optimize
- for the common single-byte case. */
- get_sleb128_step (acc, *addrp, 0);
-
- const size_t max = __libdw_max_len_leb128 (*addrp - 1, end);
- for (size_t i = 1; i < max; ++i)
- get_sleb128_step (acc, *addrp, i);
- /* Other implementations set VALUE to INT_MAX in this
- case. So we better do this as well. */
- return INT64_MAX;
-}
-
-#define get_sleb128(var, addr, end) ((var) = __libdw_get_sleb128 (&(addr), end))
-
-
-/* We use simple memory access functions in case the hardware allows it.
- The caller has to make sure we don't have alias problems. */
-#if ALLOW_UNALIGNED
-
-# define read_2ubyte_unaligned(Dbg, Addr) \
- (unlikely ((Dbg)->other_byte_order) \
- ? bswap_16 (*((const uint16_t *) (Addr))) \
- : *((const uint16_t *) (Addr)))
-# define read_2sbyte_unaligned(Dbg, Addr) \
- (unlikely ((Dbg)->other_byte_order) \
- ? (int16_t) bswap_16 (*((const int16_t *) (Addr))) \
- : *((const int16_t *) (Addr)))
-
-# define read_4ubyte_unaligned_noncvt(Addr) \
- *((const uint32_t *) (Addr))
-# define read_4ubyte_unaligned(Dbg, Addr) \
- (unlikely ((Dbg)->other_byte_order) \
- ? bswap_32 (*((const uint32_t *) (Addr))) \
- : *((const uint32_t *) (Addr)))
-# define read_4sbyte_unaligned(Dbg, Addr) \
- (unlikely ((Dbg)->other_byte_order) \
- ? (int32_t) bswap_32 (*((const int32_t *) (Addr))) \
- : *((const int32_t *) (Addr)))
-
-# define read_8ubyte_unaligned_noncvt(Addr) \
- *((const uint64_t *) (Addr))
-# define read_8ubyte_unaligned(Dbg, Addr) \
- (unlikely ((Dbg)->other_byte_order) \
- ? bswap_64 (*((const uint64_t *) (Addr))) \
- : *((const uint64_t *) (Addr)))
-# define read_8sbyte_unaligned(Dbg, Addr) \
- (unlikely ((Dbg)->other_byte_order) \
- ? (int64_t) bswap_64 (*((const int64_t *) (Addr))) \
- : *((const int64_t *) (Addr)))
-
-#else
-
-union unaligned
- {
- void *p;
- uint16_t u2;
- uint32_t u4;
- uint64_t u8;
- int16_t s2;
- int32_t s4;
- int64_t s8;
- } __attribute__ ((packed));
-
-# define read_2ubyte_unaligned(Dbg, Addr) \
- read_2ubyte_unaligned_1 ((Dbg)->other_byte_order, (Addr))
-# define read_2sbyte_unaligned(Dbg, Addr) \
- read_2sbyte_unaligned_1 ((Dbg)->other_byte_order, (Addr))
-# define read_4ubyte_unaligned(Dbg, Addr) \
- read_4ubyte_unaligned_1 ((Dbg)->other_byte_order, (Addr))
-# define read_4sbyte_unaligned(Dbg, Addr) \
- read_4sbyte_unaligned_1 ((Dbg)->other_byte_order, (Addr))
-# define read_8ubyte_unaligned(Dbg, Addr) \
- read_8ubyte_unaligned_1 ((Dbg)->other_byte_order, (Addr))
-# define read_8sbyte_unaligned(Dbg, Addr) \
- read_8sbyte_unaligned_1 ((Dbg)->other_byte_order, (Addr))
-
-static inline uint16_t
-read_2ubyte_unaligned_1 (bool other_byte_order, const void *p)
-{
- const union unaligned *up = p;
- if (unlikely (other_byte_order))
- return bswap_16 (up->u2);
- return up->u2;
-}
-static inline int16_t
-read_2sbyte_unaligned_1 (bool other_byte_order, const void *p)
-{
- const union unaligned *up = p;
- if (unlikely (other_byte_order))
- return (int16_t) bswap_16 (up->u2);
- return up->s2;
-}
-
-static inline uint32_t
-read_4ubyte_unaligned_noncvt (const void *p)
-{
- const union unaligned *up = p;
- return up->u4;
-}
-static inline uint32_t
-read_4ubyte_unaligned_1 (bool other_byte_order, const void *p)
-{
- const union unaligned *up = p;
- if (unlikely (other_byte_order))
- return bswap_32 (up->u4);
- return up->u4;
-}
-static inline int32_t
-read_4sbyte_unaligned_1 (bool other_byte_order, const void *p)
-{
- const union unaligned *up = p;
- if (unlikely (other_byte_order))
- return (int32_t) bswap_32 (up->u4);
- return up->s4;
-}
-
-static inline uint64_t
-read_8ubyte_unaligned_noncvt (const void *p)
-{
- const union unaligned *up = p;
- return up->u8;
-}
-static inline uint64_t
-read_8ubyte_unaligned_1 (bool other_byte_order, const void *p)
-{
- const union unaligned *up = p;
- if (unlikely (other_byte_order))
- return bswap_64 (up->u8);
- return up->u8;
-}
-static inline int64_t
-read_8sbyte_unaligned_1 (bool other_byte_order, const void *p)
-{
- const union unaligned *up = p;
- if (unlikely (other_byte_order))
- return (int64_t) bswap_64 (up->u8);
- return up->s8;
-}
-
-#endif /* allow unaligned */
-
-
-#define read_2ubyte_unaligned_inc(Dbg, Addr) \
- ({ uint16_t t_ = read_2ubyte_unaligned (Dbg, Addr); \
- Addr = (__typeof (Addr)) (((uintptr_t) (Addr)) + 2); \
- t_; })
-#define read_2sbyte_unaligned_inc(Dbg, Addr) \
- ({ int16_t t_ = read_2sbyte_unaligned (Dbg, Addr); \
- Addr = (__typeof (Addr)) (((uintptr_t) (Addr)) + 2); \
- t_; })
-
-#define read_4ubyte_unaligned_inc(Dbg, Addr) \
- ({ uint32_t t_ = read_4ubyte_unaligned (Dbg, Addr); \
- Addr = (__typeof (Addr)) (((uintptr_t) (Addr)) + 4); \
- t_; })
-#define read_4sbyte_unaligned_inc(Dbg, Addr) \
- ({ int32_t t_ = read_4sbyte_unaligned (Dbg, Addr); \
- Addr = (__typeof (Addr)) (((uintptr_t) (Addr)) + 4); \
- t_; })
-
-#define read_8ubyte_unaligned_inc(Dbg, Addr) \
- ({ uint64_t t_ = read_8ubyte_unaligned (Dbg, Addr); \
- Addr = (__typeof (Addr)) (((uintptr_t) (Addr)) + 8); \
- t_; })
-#define read_8sbyte_unaligned_inc(Dbg, Addr) \
- ({ int64_t t_ = read_8sbyte_unaligned (Dbg, Addr); \
- Addr = (__typeof (Addr)) (((uintptr_t) (Addr)) + 8); \
- t_; })
-
-
-#define read_addr_unaligned_inc(Nbytes, Dbg, Addr) \
- (assert ((Nbytes) == 4 || (Nbytes) == 8), \
- ((Nbytes) == 4 ? read_4ubyte_unaligned_inc (Dbg, Addr) \
- : read_8ubyte_unaligned_inc (Dbg, Addr)))
-
-#endif /* memory-access.h */
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