259 lines
7.6 KiB
C
259 lines
7.6 KiB
C
/*
|
|
* (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
|
|
* See the copyright notice in the ACK home directory, in the file "Copyright".
|
|
*/
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <unistd.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <fcntl.h>
|
|
#include <em_spec.h>
|
|
#include <as_spec.h>
|
|
#include <em_flag.h>
|
|
#include <arch.h>
|
|
#include <local.h>
|
|
|
|
#define RCS_ASS "$Id$"
|
|
|
|
/*
|
|
* compile time options
|
|
*/
|
|
|
|
#define DUMP 1 /* dump between passes */
|
|
/* #define TIMING 1 */ /* some timing measurements */
|
|
#define JOHAN 1 /* dump the loaded instructions */
|
|
#define MEMUSE 1 /* print memory usage statistics */
|
|
|
|
#ifndef DUMP
|
|
#define dump(x) /* nothing */
|
|
#endif
|
|
|
|
#ifndef TIMING
|
|
#define timing() /* nothing */
|
|
#endif
|
|
|
|
#ifndef MEMUSE
|
|
#define memuse() /* nothing */
|
|
#endif
|
|
|
|
/* Used to clear the upper byte(s) of characters.
|
|
Not nessecary if your C-compiler does not sign-extend char's
|
|
*/
|
|
|
|
#ifdef CPM
|
|
# define LC(ch) ( ((ch)<'A' | (ch)>'Z' ) ? (ch) : ((ch)-('A'-'a')))
|
|
#else
|
|
# define LC(ch) (ch)
|
|
#endif
|
|
|
|
#define ctrunc(val) ( (val)&0377 )
|
|
|
|
#define odd(n) ((n)&1) /* Boolean odd function */
|
|
|
|
#define lnp_cast (line_t *)
|
|
#define gbp_cast (glob_t *)
|
|
#define lbp_cast (locl_t *)
|
|
#define prp_cast (proc_t *)
|
|
#define ptp_cast (ptab_t *)
|
|
#define rlp_cast (relc_t *)
|
|
#define pst_cast (stat_t *)
|
|
#define chp_cast (char *)
|
|
#define ipp_cast (int **)
|
|
#define iip_cast (int *)
|
|
#define int_cast (int )
|
|
|
|
typedef struct lines line_t;
|
|
typedef struct loc_label locl_t;
|
|
typedef struct glob_label glob_t;
|
|
typedef struct rel relc_t;
|
|
typedef struct procstat stat_t;
|
|
typedef struct sizes siz_t;
|
|
typedef struct ar_hdr arch_t;
|
|
typedef struct procs proc_t;
|
|
typedef struct proctab ptab_t;
|
|
typedef char * area_t;
|
|
typedef long cons_t;
|
|
|
|
typedef union {
|
|
cons_t ad_i;
|
|
locl_t *ad_lp;
|
|
glob_t *ad_gp;
|
|
proc_t *ad_pp;
|
|
struct sad_ln {
|
|
short ln_extra;
|
|
short ln_first;
|
|
} ad_ln ;
|
|
struct sad_df {
|
|
cons_t df_i;
|
|
glob_t *df_gp;
|
|
} ad_df;
|
|
} addr_u;
|
|
|
|
typedef union {
|
|
cons_t rel_i;
|
|
locl_t *rel_lp;
|
|
glob_t *rel_gp;
|
|
} rel_u;
|
|
|
|
#define FOFFSET long /* offset into file */
|
|
|
|
/*
|
|
* Global variables and definitions for EM1-assembler/loader
|
|
*/
|
|
|
|
#define DEFINING 0 /* parameters for glolookup */
|
|
#define OCCURRING 1
|
|
#define INTERNING 2
|
|
#define EXTERNING 3
|
|
#define SEARCHING 4
|
|
#define ENTERING 5
|
|
|
|
#define PRO_OCC 0 /* parameters for prolookup */
|
|
#define PRO_DEF 1
|
|
#define PRO_INT 2
|
|
#define PRO_EXT 3
|
|
|
|
#define TRUE 1
|
|
#define FALSE 0
|
|
|
|
#define MAXBYTE 255
|
|
|
|
#define MAXSTRING 200 /* Maximum string length accepted */
|
|
#define LOCLABSIZE 128 /* size of local label hash table */
|
|
/* may not be smaller */
|
|
#define ABSSIZE 8
|
|
|
|
struct lines {
|
|
char instr_num; /* index into mnemon[] */
|
|
char type1; /* see below */
|
|
line_t *l_next; /* next in chain */
|
|
char *opoff; /* pointer into opchoice[] */
|
|
addr_u ad; /* depending on type, various pointers */
|
|
};
|
|
|
|
/* contents of type1 */
|
|
#define MISSING 0 /* no operand */
|
|
#define CONST 1 /* ad contains operand */
|
|
#define PROCNAME 2 /* ad contains struct procs pointer */
|
|
#define GLOSYM 3 /* ad contains pointer into mproc[] */
|
|
#define LOCSYM 4 /* ad contains pointer into locs[] */
|
|
#define GLOOFF 5 /* ad contains CONST and GLOSYM in ad_df */
|
|
#define LINES 6 /* Line number setting, only param of pseudo*/
|
|
#define VALLOW 7 /* value's between LOW and HIGH are x-MID */
|
|
#define VALMID 50
|
|
#define VALHIGH 127 /* to avoid sign extension problems */
|
|
|
|
#define VAL1(x) ((x)-VALMID)
|
|
|
|
/* Used to indicate a invalid contents of opoff */
|
|
#define NO_OFF ((char *)-1)
|
|
|
|
struct loc_label {
|
|
locl_t *l_chain; /* The next label with same low order bits */
|
|
char l_hinum; /* high bits of number of label */
|
|
char l_defined; /* see below */
|
|
int l_min,l_max; /* boundaries of value */
|
|
};
|
|
|
|
/* The structure containing procedure pertinent data */
|
|
/* Used for environment stacking for nested PRO's */
|
|
|
|
struct procstat {
|
|
line_t *s_fline; /* points to first line of procedure */
|
|
locl_t (*s_locl)[1]; /* pointer to local labels */
|
|
proc_t *s_curpro; /* identifies current procedure */
|
|
relc_t *s_fdata; /* last datareloc before procedure */
|
|
stat_t *s_prevstat; /* backward chain of nested procedures */
|
|
} ;
|
|
|
|
/* contents of l_defined */
|
|
#define EMPTY 0 /* Empty slot */
|
|
#define NO 1 /* not defined yet */
|
|
#define YES 2 /* defined */
|
|
#define SEEN 3 /* intermediate state */
|
|
#define NOTPRESENT 4 /* Undefined and error message given */
|
|
|
|
struct glob_label {
|
|
char *g_name;
|
|
char g_status; /* see below */
|
|
union {
|
|
cons_t g_addr; /* value if status&DEF */
|
|
struct glob_label *g_gp; /* ref. to xglobs */
|
|
} g_val ;
|
|
};
|
|
|
|
#define glostring(gl) ((gl)->g_name)
|
|
|
|
/* contents of g_status */
|
|
#define DEF 01 /* defined */
|
|
#define OCC 02 /* used */
|
|
#define EXT 04 /* external */
|
|
|
|
struct rel { /* for relocation tables */
|
|
relc_t *r_next; /* chain */
|
|
FOFFSET r_off; /* offset in text/data of word to relocate */
|
|
rel_u r_val; /* constant or pointer to global symbol */
|
|
int r_typ; /* different use in text or data */
|
|
};
|
|
|
|
/*
|
|
* When used with textrelocation r_typ contains the flag bits as defined
|
|
* in ip_spec.h together with the RELMNS bit if r_val contains an integer
|
|
*/
|
|
|
|
#define RELMNS 020000 /* indicates integer i.s.o. glob */
|
|
|
|
/* Contents of r_typ when used with data relocation */
|
|
#define RELNULL 0
|
|
#define RELGLO 1
|
|
#define RELHEAD 2
|
|
#define RELLOC 3
|
|
#define RELADR 4
|
|
|
|
/* modes of data output */
|
|
#define DATA_NUL 0
|
|
#define DATA_REP 1
|
|
#define DATA_CONST 2
|
|
#define DATA_BSS 3
|
|
#define DATA_DPTR 4
|
|
#define DATA_IPTR 5
|
|
#define DATA_ICON 6
|
|
#define DATA_UCON 7
|
|
#define DATA_FCON 8
|
|
#define DATA_BYTES 9
|
|
|
|
/* name of procedure to be called first */
|
|
#define MAIN "_m_a_i_n"
|
|
|
|
/* headers of datablocks written */
|
|
#define HEADREP 0
|
|
#define HEADBSS 1
|
|
#define HEADBYTE 2
|
|
#define HEADCONST 3
|
|
#define HEADDPTR 4
|
|
#define HEADIPTR 5
|
|
#define HEADICON 6
|
|
#define HEADUCON 7
|
|
#define HEADFCON 8
|
|
|
|
#define NDEFAULT 4 /* number of different sizes available */
|
|
struct sizes {
|
|
int n_mlab; /* # of global labels per module */
|
|
int n_glab; /* # of extern global labels */
|
|
int n_mproc; /* # of local procs per module */
|
|
int n_xproc; /* # of external procs */
|
|
int n_proc; /* total # of procedures */
|
|
};
|
|
|
|
struct procs { /* format of mprocs[] and xprocs[] */
|
|
char *p_name;
|
|
char p_status; /* same bits as g_status except REL */
|
|
int p_num; /* unique procedure descriptor */
|
|
};
|
|
|
|
struct proctab {
|
|
cons_t pr_off; /* distance from pb */
|
|
cons_t pr_loc; /* number of bytes locals */
|
|
};
|