xref: /src/external/gpl3/gdb/dist/sim/common/sim-endian.h

/* The common simulator framework for GDB, the GNU Debugger.

   Copyright 2002, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.

   Contributed by Andrew Cagney and Red Hat.

   This file is part of GDB.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program 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 a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */


#ifndef _SIM_ENDIAN_H_
#define _SIM_ENDIAN_H_


/* C byte conversion functions */

INLINE_SIM_ENDIAN(unsigned_1) endian_h2t_1(unsigned_1 x);
INLINE_SIM_ENDIAN(unsigned_2) endian_h2t_2(unsigned_2 x);
INLINE_SIM_ENDIAN(unsigned_4) endian_h2t_4(unsigned_4 x);
INLINE_SIM_ENDIAN(unsigned_8) endian_h2t_8(unsigned_8 x);
INLINE_SIM_ENDIAN(unsigned_16) endian_h2t_16(unsigned_16 x);

INLINE_SIM_ENDIAN(unsigned_1) endian_t2h_1(unsigned_1 x);
INLINE_SIM_ENDIAN(unsigned_2) endian_t2h_2(unsigned_2 x);
INLINE_SIM_ENDIAN(unsigned_4) endian_t2h_4(unsigned_4 x);
INLINE_SIM_ENDIAN(unsigned_8) endian_t2h_8(unsigned_8 x);
INLINE_SIM_ENDIAN(unsigned_16) endian_t2h_16(unsigned_16 x);

INLINE_SIM_ENDIAN(unsigned_1) swap_1(unsigned_1 x);
INLINE_SIM_ENDIAN(unsigned_2) swap_2(unsigned_2 x);
INLINE_SIM_ENDIAN(unsigned_4) swap_4(unsigned_4 x);
INLINE_SIM_ENDIAN(unsigned_8) swap_8(unsigned_8 x);
INLINE_SIM_ENDIAN(unsigned_16) swap_16(unsigned_16 x);

INLINE_SIM_ENDIAN(unsigned_1) endian_h2be_1(unsigned_1 x);
INLINE_SIM_ENDIAN(unsigned_2) endian_h2be_2(unsigned_2 x);
INLINE_SIM_ENDIAN(unsigned_4) endian_h2be_4(unsigned_4 x);
INLINE_SIM_ENDIAN(unsigned_8) endian_h2be_8(unsigned_8 x);
INLINE_SIM_ENDIAN(unsigned_16) endian_h2be_16(unsigned_16 x);

INLINE_SIM_ENDIAN(unsigned_1) endian_be2h_1(unsigned_1 x);
INLINE_SIM_ENDIAN(unsigned_2) endian_be2h_2(unsigned_2 x);
INLINE_SIM_ENDIAN(unsigned_4) endian_be2h_4(unsigned_4 x);
INLINE_SIM_ENDIAN(unsigned_8) endian_be2h_8(unsigned_8 x);
INLINE_SIM_ENDIAN(unsigned_16) endian_be2h_16(unsigned_16 x);

INLINE_SIM_ENDIAN(unsigned_1) endian_h2le_1(unsigned_1 x);
INLINE_SIM_ENDIAN(unsigned_2) endian_h2le_2(unsigned_2 x);
INLINE_SIM_ENDIAN(unsigned_4) endian_h2le_4(unsigned_4 x);
INLINE_SIM_ENDIAN(unsigned_8) endian_h2le_8(unsigned_8 x);
INLINE_SIM_ENDIAN(unsigned_16) endian_h2le_16(unsigned_16 x);

INLINE_SIM_ENDIAN(unsigned_1) endian_le2h_1(unsigned_1 x);
INLINE_SIM_ENDIAN(unsigned_2) endian_le2h_2(unsigned_2 x);
INLINE_SIM_ENDIAN(unsigned_4) endian_le2h_4(unsigned_4 x);
INLINE_SIM_ENDIAN(unsigned_8) endian_le2h_8(unsigned_8 x);
INLINE_SIM_ENDIAN(unsigned_16) endian_le2h_16(unsigned_16 x);

INLINE_SIM_ENDIAN(void*) offset_1(unsigned_1 *x, unsigned ws, unsigned w);
INLINE_SIM_ENDIAN(void*) offset_2(unsigned_2 *x, unsigned ws, unsigned w);
INLINE_SIM_ENDIAN(void*) offset_4(unsigned_4 *x, unsigned ws, unsigned w);
INLINE_SIM_ENDIAN(void*) offset_8(unsigned_8 *x, unsigned ws, unsigned w);
INLINE_SIM_ENDIAN(void*) offset_16(unsigned_16 *x, unsigned ws, unsigned w);

INLINE_SIM_ENDIAN(unsigned_16) sim_endian_join_16 (unsigned_8 h, unsigned_8 l);
INLINE_SIM_ENDIAN(unsigned_8) sim_endian_split_16 (unsigned_16 word, int w);


/* SWAP */

#define SWAP_1 swap_1
#define SWAP_2 swap_2
#define SWAP_4 swap_4
#define SWAP_8 swap_8
#define SWAP_16 swap_16


/* HOST to BE */

#define H2BE_1 endian_h2be_1
#define H2BE_2 endian_h2be_2
#define H2BE_4 endian_h2be_4
#define H2BE_8 endian_h2be_8
#define H2BE_16 endian_h2be_16
#define BE2H_1 endian_be2h_1
#define BE2H_2 endian_be2h_2
#define BE2H_4 endian_be2h_4
#define BE2H_8 endian_be2h_8
#define BE2H_16 endian_be2h_16


/* HOST to LE */

#define H2LE_1 endian_h2le_1
#define H2LE_2 endian_h2le_2
#define H2LE_4 endian_h2le_4
#define H2LE_8 endian_h2le_8
#define H2LE_16 endian_h2le_16
#define LE2H_1 endian_le2h_1
#define LE2H_2 endian_le2h_2
#define LE2H_4 endian_le2h_4
#define LE2H_8 endian_le2h_8
#define LE2H_16 endian_le2h_16


/* HOST to TARGET */

#define H2T_1 endian_h2t_1
#define H2T_2 endian_h2t_2
#define H2T_4 endian_h2t_4
#define H2T_8 endian_h2t_8
#define H2T_16 endian_h2t_16
#define T2H_1 endian_t2h_1
#define T2H_2 endian_t2h_2
#define T2H_4 endian_t2h_4
#define T2H_8 endian_t2h_8
#define T2H_16 endian_t2h_16


/* CONVERT IN PLACE

   These macros, given an argument of unknown size, swap its value in
   place if a host/target conversion is required. */

#define H2T(VARIABLE) \
do { \
  void *vp = &(VARIABLE); \
  switch (sizeof (VARIABLE)) { \
  case 1: *(unsigned_1*)vp = H2T_1(*(unsigned_1*)vp); break; \
  case 2: *(unsigned_2*)vp = H2T_2(*(unsigned_2*)vp); break; \
  case 4: *(unsigned_4*)vp = H2T_4(*(unsigned_4*)vp); break; \
  case 8: *(unsigned_8*)vp = H2T_8(*(unsigned_8*)vp); break; \
  case 16: *(unsigned_16*)vp = H2T_16(*(unsigned_16*)vp); break; \
  } \
} while (0)

#define T2H(VARIABLE) \
do { \
  switch (sizeof(VARIABLE)) { \
  case 1: VARIABLE = T2H_1(VARIABLE); break; \
  case 2: VARIABLE = T2H_2(VARIABLE); break; \
  case 4: VARIABLE = T2H_4(VARIABLE); break; \
  case 8: VARIABLE = T2H_8(VARIABLE); break; \
  /*case 16: VARIABLE = T2H_16(VARIABLE); break;*/ \
  } \
} while (0)

#define SWAP(VARIABLE) \
do { \
  switch (sizeof(VARIABLE)) { \
  case 1: VARIABLE = SWAP_1(VARIABLE); break; \
  case 2: VARIABLE = SWAP_2(VARIABLE); break; \
  case 4: VARIABLE = SWAP_4(VARIABLE); break; \
  case 8: VARIABLE = SWAP_8(VARIABLE); break; \
  /*case 16: VARIABLE = SWAP_16(VARIABLE); break;*/ \
  } \
} while (0)

#define H2BE(VARIABLE) \
do { \
  switch (sizeof(VARIABLE)) { \
  case 1: VARIABLE = H2BE_1(VARIABLE); break; \
  case 2: VARIABLE = H2BE_2(VARIABLE); break; \
  case 4: VARIABLE = H2BE_4(VARIABLE); break; \
  case 8: VARIABLE = H2BE_8(VARIABLE); break; \
  /*case 16: VARIABLE = H2BE_16(VARIABLE); break;*/ \
  } \
} while (0)

#define BE2H(VARIABLE) \
do { \
  switch (sizeof(VARIABLE)) { \
  case 1: VARIABLE = BE2H_1(VARIABLE); break; \
  case 2: VARIABLE = BE2H_2(VARIABLE); break; \
  case 4: VARIABLE = BE2H_4(VARIABLE); break; \
  case 8: VARIABLE = BE2H_8(VARIABLE); break; \
  /*case 16: VARIABLE = BE2H_16(VARIABLE); break;*/ \
  } \
} while (0)

#define H2LE(VARIABLE) \
do { \
  switch (sizeof(VARIABLE)) { \
  case 1: VARIABLE = H2LE_1(VARIABLE); break; \
  case 2: VARIABLE = H2LE_2(VARIABLE); break; \
  case 4: VARIABLE = H2LE_4(VARIABLE); break; \
  case 8: VARIABLE = H2LE_8(VARIABLE); break; \
  /*case 16: VARIABLE = H2LE_16(VARIABLE); break;*/ \
  } \
} while (0)

#define LE2H(VARIABLE) \
do { \
  switch (sizeof(VARIABLE)) { \
  case 1: VARIABLE = LE2H_1(VARIABLE); break; \
  case 2: VARIABLE = LE2H_2(VARIABLE); break; \
  case 4: VARIABLE = LE2H_4(VARIABLE); break; \
  case 8: VARIABLE = LE2H_8(VARIABLE); break; \
  /*case 16: VARIABLE = LE2H_16(VARIABLE); break;*/ \
  } \
} while (0)



/* TARGET WORD:

   Byte swap a quantity the size of the targets word */

#if (WITH_TARGET_WORD_BITSIZE == 64)
#define H2T_word H2T_8
#define T2H_word T2H_8
#define H2BE_word H2BE_8
#define BE2H_word BE2H_8
#define H2LE_word H2LE_8
#define LE2H_word LE2H_8
#define SWAP_word SWAP_8
#endif
#if (WITH_TARGET_WORD_BITSIZE == 32)
#define H2T_word H2T_4
#define T2H_word T2H_4
#define H2BE_word H2BE_4
#define BE2H_word BE2H_4
#define H2LE_word H2LE_4
#define LE2H_word LE2H_4
#define SWAP_word SWAP_4
#endif



/* TARGET CELL:

   Byte swap a quantity the size of the targets IEEE 1275 memory cell */

#define H2T_cell H2T_4
#define T2H_cell T2H_4
#define H2BE_cell H2BE_4
#define BE2H_cell BE2H_4
#define H2LE_cell H2LE_4
#define LE2H_cell LE2H_4
#define SWAP_cell SWAP_4



/* HOST Offsets:

   Address of high/low sub-word within a host word quantity.

   Address of sub-word N within a host word quantity.  NOTE: Numbering
   is BIG endian always. */

#define AH1_2(X) (unsigned_1*)offset_2((X), 1, 0)
#define AL1_2(X) (unsigned_1*)offset_2((X), 1, 1)

#define AH2_4(X) (unsigned_2*)offset_4((X), 2, 0)
#define AL2_4(X) (unsigned_2*)offset_4((X), 2, 1)

#define AH4_8(X) (unsigned_4*)offset_8((X), 4, 0)
#define AL4_8(X) (unsigned_4*)offset_8((X), 4, 1)

#define AH8_16(X) (unsigned_8*)offset_16((X), 8, 0)
#define AL8_16(X) (unsigned_8*)offset_16((X), 8, 1)

#if (WITH_TARGET_WORD_BITSIZE == 64)
#define AH_word(X) AH4_8(X)
#define AL_word(X) AL4_8(X)
#endif
#if (WITH_TARGET_WORD_BITSIZE == 32)
#define AH_word(X) AH2_4(X)
#define AL_word(X) AL2_4(X)
#endif


#define A1_2(X,N) (unsigned_1*)offset_2((X), 1, (N))

#define A1_4(X,N) (unsigned_1*)offset_4((X), 1, (N))
#define A2_4(X,N) (unsigned_2*)offset_4((X), 2, (N))

#define A1_8(X,N) (unsigned_1*)offset_8((X), 1, (N))
#define A2_8(X,N) (unsigned_2*)offset_8((X), 2, (N))
#define A4_8(X,N) (unsigned_4*)offset_8((X), 4, (N))

#define A1_16(X,N) (unsigned_1*)offset_16((X), 1, (N))
#define A2_16(X,N) (unsigned_2*)offset_16((X), 2, (N))
#define A4_16(X,N) (unsigned_4*)offset_16((X), 4, (N))
#define A8_16(X,N) (unsigned_8*)offset_16((X), 8, (N))




/* HOST Components:

   Value of sub-word within a host word quantity */

#define VH1_2(X) ((unsigned_1)((unsigned_2)(X) >> 8))
#define VL1_2(X) (unsigned_1)(X)

#define VH2_4(X) ((unsigned_2)((unsigned_4)(X) >> 16))
#define VL2_4(X) ((unsigned_2)(X))

#define VH4_8(X) ((unsigned_4)((unsigned_8)(X) >> 32))
#define VL4_8(X) ((unsigned_4)(X))

#define VH8_16(X) (sim_endian_split_16 ((X), 0))
#define VL8_16(X) (sim_endian_split_16 ((X), 1))

#if (WITH_TARGET_WORD_BITSIZE == 64)
#define VH_word(X) VH4_8(X)
#define VL_word(X) VL4_8(X)
#endif
#if (WITH_TARGET_WORD_BITSIZE == 32)
#define VH_word(X) VH2_4(X)
#define VL_word(X) VL2_4(X)
#endif


#define V1_2(X,N) ((unsigned_1)((unsigned_2)(X) >> ( 8 * (1 - (N)))))

#define V1_4(X,N) ((unsigned_1)((unsigned_4)(X) >> ( 8 * (3 - (N)))))
#define V2_4(X,N) ((unsigned_2)((unsigned_4)(X) >> (16 * (1 - (N)))))

#define V1_8(X,N) ((unsigned_1)((unsigned_8)(X) >> ( 8 * (7 - (N)))))
#define V2_8(X,N) ((unsigned_2)((unsigned_8)(X) >> (16 * (3 - (N)))))
#define V4_8(X,N) ((unsigned_4)((unsigned_8)(X) >> (32 * (1 - (N)))))

#define V1_16(X,N) (*A1_16 (&(X),N))
#define V2_16(X,N) (*A2_16 (&(X),N))
#define V4_16(X,N) (*A4_16 (&(X),N))
#define V8_16(X,N) (*A8_16 (&(X),N))


/* Reverse - insert sub-word into word quantity */

#define V2_H1(X) ((unsigned_2)(unsigned_1)(X) <<  8)
#define V2_L1(X) ((unsigned_2)(unsigned_1)(X))

#define V4_H2(X) ((unsigned_4)(unsigned_2)(X) << 16)
#define V4_L2(X) ((unsigned_4)(unsigned_2)(X))

#define V8_H4(X) ((unsigned_8)(unsigned_4)(X) << 32)
#define V8_L4(X) ((unsigned_8)(unsigned_4)(X))

#define V16_H8(X) ((unsigned_16)(unsigned_8)(X) << 64)
#define V16_L8(X) ((unsigned_16)(unsigned_8)(X))


#define V2_1(X,N) ((unsigned_2)(unsigned_1)(X) << ( 8 * (1 - (N))))

#define V4_1(X,N) ((unsigned_4)(unsigned_1)(X) << ( 8 * (3 - (N))))
#define V4_2(X,N) ((unsigned_4)(unsigned_2)(X) << (16 * (1 - (N))))

#define V8_1(X,N) ((unsigned_8)(unsigned_1)(X) << ( 8 * (7 - (N))))
#define V8_2(X,N) ((unsigned_8)(unsigned_2)(X) << (16 * (3 - (N))))
#define V8_4(X,N) ((unsigned_8)(unsigned_4)(X) << (32 * (1 - (N))))

#define V16_1(X,N) ((unsigned_16)(unsigned_1)(X) << ( 8 * (15 - (N))))
#define V16_2(X,N) ((unsigned_16)(unsigned_2)(X) << (16 * (7 - (N))))
#define V16_4(X,N) ((unsigned_16)(unsigned_4)(X) << (32 * (3 - (N))))
#define V16_8(X,N) ((unsigned_16)(unsigned_8)(X) << (64 * (1 - (N))))


/* Reverse - insert N sub-words into single word quantity */

#define U2_1(I0,I1) (V2_1(I0,0) | V2_1(I1,1))
#define U4_1(I0,I1,I2,I3) (V4_1(I0,0) | V4_1(I1,1) | V4_1(I2,2) | V4_1(I3,3))
#define U8_1(I0,I1,I2,I3,I4,I5,I6,I7) \
(V8_1(I0,0) | V8_1(I1,1) | V8_1(I2,2) | V8_1(I3,3) \
 | V8_1(I4,4) | V8_1(I5,5) | V8_1(I6,6) | V8_1(I7,7))
#define U16_1(I0,I1,I2,I3,I4,I5,I6,I7,I8,I9,I10,I11,I12,I13,I14,I15) \
(V16_1(I0,0) | V16_1(I1,1) | V16_1(I2,2) | V16_1(I3,3) \
 | V16_1(I4,4) | V16_1(I5,5) | V16_1(I6,6) | V16_1(I7,7) \
 | V16_1(I8,8) | V16_1(I9,9) | V16_1(I10,10) | V16_1(I11,11) \
 | V16_1(I12,12) | V16_1(I13,13) | V16_1(I14,14) | V16_1(I15,15))

#define U4_2(I0,I1) (V4_2(I0,0) | V4_2(I1,1))
#define U8_2(I0,I1,I2,I3) (V8_2(I0,0) | V8_2(I1,1) | V8_2(I2,2) | V8_2(I3,3))
#define U16_2(I0,I1,I2,I3,I4,I5,I6,I7) \
(V16_2(I0,0) | V16_2(I1,1) | V16_2(I2,2) | V16_2(I3,3) \
 | V16_2(I4,4) | V16_2(I5,5) | V16_2(I6,6) | V16_2(I7,7) )

#define U8_4(I0,I1) (V8_4(I0,0) | V8_4(I1,1))
#define U16_4(I0,I1,I2,I3) (V16_4(I0,0) | V16_4(I1,1) | V16_4(I2,2) | V16_4(I3,3))

#define U16_8(I0,I1) (sim_endian_join_16 (I0, I1))


#if (WITH_TARGET_WORD_BITSIZE == 64)
#define Vword_H(X) V8_H4(X)
#define Vword_L(X) V8_L4(X)
#endif
#if (WITH_TARGET_WORD_BITSIZE == 32)
#define Vword_H(X) V4_H2(X)
#define Vword_L(X) V4_L2(X)
#endif




#if H_REVEALS_MODULE_P (SIM_ENDIAN_INLINE)
#include "sim-endian.c"
#endif

#endif /* _SIM_ENDIAN_H_ */