C166/ST10 Cross-Assembler, Linker/Locator, Utilities ... - Tasking

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A.out File Format A−19
/*
* memory type definitions
* used in symbol table (i_mtyp)
* used in expression evaluation (mtyp)
* used in allocation record S_SEG
*/
#define MEM_UNDEF 0x00 /* memory type undefined */
#define MEM_CODE 0x78 /* memory type code */
#define MEM_BIT 0x79 /* memory type bit */
#define MEM_DATA 0x7a /* memory type data */
#define MEM_XDATA 0x7b /* memory type xdata */
#define MEM_HDAT 0x7b /* memory type HDAT */
#define MEM_IDATA 0x7c /* memory type idata */
#define MEM_PDAT 0x7c /* memory type PDAT */
#define MEM_NBR 0x7d /* memory type number */
#define MEM_LDAT 0x7d /* memory type LDAT */
#define MEM_DBI 0x7e /* memory type data bitaddressable
* internal use only
*/
#define MEM_SDAT 0x7f /* memory type SDAT */
/*
* Extension records only occur in object files. Thus there
* exists an extension header if IS_OBJECT(outhead). (see below).
*
* extension header */
struct exthead {
Ushort eh_magic; /* magic number */
Ushort eh_stamp; /* version stamp */
Ushort eh_nsegm; /* number of extsegm structures */
Ushort eh_nallo; /* number of extallo structures */
};
#define E_MAGIC N_MAGIC /* magic number for object file */
#define E_STAMP 0 /* version stamp */
/*
* segment range specifications
*/
struct extsegm {
Ushort es_type; /* symbol type */
Ushort es_desc; /* debug info */
long es_lval; /* lower bound value */
long es_uval; /* upper bound value */
};
struct tk_extsegm {
Ushort es_type; /* symbol type */
Ushort es_desc; /* debug info */
long es_lval; /* lower bound value */
long es_uval; /* upper bound value */
Ushort es_sect; /* section reference */
};