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https://github.com/SEPPDROID/Digital-Research-Source-Code.git
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62 lines
2.3 KiB
C
62 lines
2.3 KiB
C
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struct x_hdr {
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short x_magic; /* magic number */
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short x_nseg; /* number of segments in file */
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long x_init; /* length of initialized part of file */
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long x_reloc; /* length of relocation part of file */
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long x_symb; /* length of symbol table part of file */
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};
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struct x_sg {
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char x_sg_no; /* assigned number of segment */
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char x_sg_typ; /* type of segment */
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unsigned x_sg_len; /* length of segment */
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} x_sg[]; /* array of size x_nseg */
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#define X_SU_MAGIC 0xEE00 /* segmented, non executable */
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#define X_SX_MAGIC 0xEE01 /* segmented, executable */
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#define X_NU_MAGIC 0xEE02 /* non-segmented, non executable */
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#define X_NXN_MAGIC 0xEE03 /* non-segmented, executable, non-shared */
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#define X_NXS_MAGIC 0xEE07 /* non-segmented, executable, shared */
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#define X_NXI_MAGIC 0xEE0B /* non-segmented, executable, split ID */
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#define X_SG_BSS 1 /* non-initialized data segment */
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#define X_SG_STK 2 /* stack segment, no data in file */
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#define X_SG_COD 3 /* code segment */
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#define X_SG_CON 4 /* constant pool */
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#define X_SG_DAT 5 /* initialized data */
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#define X_SG_MXU 6 /* mixed code and data, not protectable */
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#define X_SG_MXP 7 /* mixed code and data, protectable */
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struct x_rel { /* relocation item */
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char x_rl_sgn; /* segment containing item to be relocated */
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char x_rl_flg; /* relocation type (see below) */
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unsigned x_rl_loc; /* location of item to be relocated */
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unsigned x_rl_bas; /* number of (external) element in symbol table
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or (internal) segment by which to relocate */
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};
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#define X_RL_OFF 1 /* adjust a 16 bit offset value only */
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#define X_RL_SSG 2 /* adjust a short form segment plus offset */
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#define X_RL_LSG 3 /* adjust a long form (32 bit) seg plus off */
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#define X_RL_XOF 5 /* adjust a 16 bit offset by an external */
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#define X_RL_XSSG 6 /* adjust a short seg ref by an external */
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#define X_RL_XLSG 7 /* adjust a long seg ref by an external */
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#define XNAMELN 8 /* length of a symbol */
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struct x_sym {
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char x_sy_sg; /* the segment number */
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char x_sy_fl; /* the type of entry */
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unsigned x_sy_val; /* the value of this entry */
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char x_sy_name[XNAMELN]; /* the symbol name, padded with 0's */
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};
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#define X_SY_LOC 1 /* local symbol (for debug only) */
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#define X_SY_UNX 2 /* undefined external entry */
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#define X_SY_GLB 3 /* global definition */
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#define X_SY_SEG 4 /* segment name */
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