"I am a person who works hard and plays hard."

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Yuan Wei
Second Year Graduate Student Department of Computer Science
University of Virginia Charlottesville, VA 22903
Email: yw3f@cs.virginia.edu

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Source Code Analysis
         

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endian.h File Reference

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Defines

• #define SWAP_HALF(X)   (((((half_t)(X)) & 0xff) << 8) | ((((half_t)(X)) & 0xff00) >> 8))
• #define SWAP_WORD(X)
• #define SWAP_QWORD(X)

Enumerations

• enum endian_t { endian_big, endian_little, endian_unknown }

Functions

• enum endian_t endian_host_byte_order (void)
• enum endian_t endian_host_word_order (void)
• enum endian_t endian_target_byte_order (void)
• enum endian_t endian_target_word_order (void)

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Define Documentation

#define SWAP_HALF (  X    )     (((((half_t)(X)) & 0xff) << 8) | ((((half_t)(X)) & 0xff00) >> 8))

Definition at line 86 of file endian.h.

#define SWAP_QWORD (  X    )

Value: (((qword_t)(X) << 56) | \ (((qword_t)(X) << 40) & ULL(0x00ff000000000000)) |\ (((qword_t)(X) << 24) & ULL(0x0000ff0000000000)) |\ (((qword_t)(X) << 8) & ULL(0x000000ff00000000)) |\ (((qword_t)(X) >> 8) & ULL(0x00000000ff000000)) |\ (((qword_t)(X) >> 24) & ULL(0x0000000000ff0000)) |\ (((qword_t)(X) >> 40) & ULL(0x000000000000ff00)) |\ (((qword_t)(X) >> 56) & ULL(0x00000000000000ff))) Definition at line 92 of file endian.h.

#define SWAP_WORD (  X    )

Value: (((word_t)(X) << 24) | \ (((word_t)(X) << 8) & 0x00ff0000) | \ (((word_t)(X) >> 8) & 0x0000ff00) | \ (((word_t)(X) >> 24) & 0x000000ff)) Definition at line 88 of file endian.h.

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Enumeration Type Documentation

enum endian_t

Enumeration values: endian_big  endian_little  endian_unknown  Definition at line 102 of file endian.h. { endian_big, endian_little, endian_unknown};

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Function Documentation

enum endian_t endian_host_byte_order (  void    )

Definition at line 81 of file endian.c. References endian_big, endian_little, and endian_unknown. Referenced by eio_create(), eio_open(), ld_load_prog(), and main(). { int i = 1, *p; p = &i; if (*((char *)p) == 1) return endian_little; else if (*((char *)p) == 0) return endian_big; else return endian_unknown; }

enum endian_t endian_host_word_order (  void    )

Definition at line 96 of file endian.c. References endian_big, endian_little, and endian_unknown. Referenced by ld_load_prog(), and main(). { int *p; double x = 1.0; /* NOTE: this check assumes IEEE floating point format */ p = (int *)&x; if (*p == 0) return endian_little; else if (*p == 0x3ff00000) return endian_big; else return endian_unknown; }

enum endian_t endian_target_byte_order (  void    )

Definition at line 116 of file endian.c. References endian_big, and endian_little. Referenced by endian_target_word_order(), and ld_load_prog(). { return ld_target_big_endian ? endian_big : endian_little; }

enum endian_t endian_target_word_order (  void    )

Definition at line 124 of file endian.c. References endian_target_byte_order(). Referenced by ld_load_prog(). { /* same as byte sex for SimpleScalar target */ return endian_target_byte_order(); }

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