include/aout/dynix3.h

   1 /*
   2  * a.out specifics for Sequent Symmetry running Dynix 3.x
   3  */
   4 #ifndef A_OUT_DYNIX3_H
   5 #define A_OUT_DYNIX3_H
   6
   7 #define external_exec dynix_external_exec
   8
   9 /* struct exec for Dynix 3
  10  *
  11  * a_gdtbl and a_bootstrap are only for standalone binaries.
  12  * Shared data fields are not supported by the kernel as of Dynix 3.1,
  13  * but are supported by Dynix compiler programs.
  14  */
  15 struct dynix_external_exec {
  16         unsigned char e_info[4];
  17         unsigned char e_text[4];
  18         unsigned char e_data[4];
  19         unsigned char e_bss[4];
  20         unsigned char e_syms[4];
  21         unsigned char e_entry[4];
  22         unsigned char e_trsize[4];
  23         unsigned char e_drsize[4];
  24         unsigned char e_g_code[8], e_g_data[8], e_g_desc[8];
  25         unsigned char e_shdata[4];
  26         unsigned char e_shbss[4];
  27         unsigned char e_shdrsize[4];
  28         unsigned char e_bootstrap[44];
  29         unsigned char e_reserved[12];
  30         unsigned char e_version[4];
  31 };
  32
  33 #define EXEC_BYTES_SIZE (128)
  34
  35 /*
  36  * All executables under Dynix are demand paged with read-only text,
  37  * Thus no NMAGIC.
  38  *
  39  * ZMAGIC has a page of 0s at virtual 0,
  40  * XMAGIC has an invalid page at virtual 0
  41  */
  42 #define OMAGIC  0x12eb          /* .o */
  43 #define ZMAGIC  0x22eb          /* zero @ 0, demand load */
  44 #define XMAGIC  0x32eb          /* invalid @ 0, demand load */
  45 #define SMAGIC  0x42eb          /* standalone, not supported here */
  46
  47 #define N_BADMAG(x) ((OMAGIC != N_MAGIC(x)) && \
  48                      (ZMAGIC != N_MAGIC(x)) && \
  49                      (XMAGIC != N_MAGIC(x)) && \
  50                      (SMAGIC != N_MAGIC(x)))
  51
  52 #define N_ADDRADJ(x) ((ZMAGIC == N_MAGIC(x) || XMAGIC == N_MAGIC(x)) ? 0x1000 : 0)
  53
  54 #define N_TXTOFF(x) (EXEC_BYTES_SIZE)
  55 #define N_DATOFF(x) (N_TXTOFF(x) + N_TXTSIZE(x))
  56 #define N_SHDATOFF(x) (N_DATOFF(x) + (x).a_data)
  57 #define N_TRELOFF(x) (N_SHDATOFF(x) + (x).a_shdata)
  58 #define N_DRELOFF(x) (N_TRELOFF(x) + (x).a_trsize)
  59 #define N_SHDRELOFF(x) (N_DRELOFF(x) + (x).a_drsize)
  60 #define N_SYMOFF(x) (N_SHDRELOFF(x) + (x).a_shdrsize)
  61 #define N_STROFF(x) (N_SYMOFF(x) + (x).a_syms)
  62
  63 #define N_TXTADDR(x) \
  64         (((OMAGIC == N_MAGIC(x)) || (SMAGIC == N_MAGIC(x))) ? 0 \
  65          : TEXT_START_ADDR + EXEC_BYTES_SIZE)
  66
  67 #define N_TXTSIZE(x) \
  68         (((OMAGIC == N_MAGIC(x)) || (SMAGIC == N_MAGIC(x))) ? ((x).a_text) \
  69          : ((x).a_text - N_ADDRADJ(x) - EXEC_BYTES_SIZE))
  70
  71 #endif /* A_OUT_DYNIX3_H */