/* $Id$ */ /* * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands. * See the copyright notice in the ACK home directory, in the file "Copyright". */ /* @(#)comm0.h 1.8 */ /* * All preprocessor based options/constants/functions */ /* ========== ON/OFF options (use #define in mach0.c) ========== */ /* * The following options are available, to be set/removed in "mach0.c": * THREE_PASS: three passes needed for branch optimization * BYTES_REVERSED: lowest target address for word high-order byte * WORDS_REVERSED: lowest target address for long high-order byte * LISTING: include listing facilities * RELOCATION: relocatable code generated * DEBUG: for debugging purposes only * TMPDIR: directory for temporary files * ASLD: combined assembler/linker */ /* ========== constants (use #undef, #define in mach0.c) ========== */ /* table sizes */ #define STRINGMAX 200 /* <= 256 */ #define SECTMAX 64 #define NAMEMAX 80 #define MEMINCR 2048 /* Some character constants for parsing */ #define ASC_LPAR '[' #define ASC_RPAR ']' #define ASC_SQUO '\'' #define ASC_DQUO '"' #define ASC_COMM '!' #define ISALPHA(c) (isalpha(c) || (c) == '_' || (c) == '.') #define ISALNUM(c) (isalnum(c) || (c) == '_') #define GENLAB "I" /* compiler generated labels */ #define valu_t short /* type of expression values */ #define ADDR_T unsigned short /* type of dot */ #define word_t short /* type of keyword value */ /* * NOTE: word_t is introduced to reduce the tokenfile size for machines * with large expressions but smaller opcodes (68000) */ #define ALIGNWORD 1 #define ALIGNSECT 1 #define machstart(x) /* nothing */ #define machfinish(x) /* nothing */ #define SETBASE(sp) ((long)(sp)->s_base) #define VALWIDTH 4 /* ========== Machine dependent option/constant settings ========== */ #include "mach0.c" /* ========== default option setting ========== */ #ifndef ASLD #ifndef RELOCATION separate linker only possible if relocation info produced #endif /* RELOCATION */ #endif /* ASLD */ #ifndef DEBUG #define DEBUG 1 #endif /* ========== Machine independent type declarations ========== */ #ifdef _include _include _include _include _include _include _include #else #include #include #include #include #include #include #include #include #endif #ifdef ASLD #include "arch.h" #endif #include "missing_proto.h" #include "object.h" #include "out.h" #if DEBUG == 0 #define assert(ex) /* nothing */ #endif #if DEBUG == 1 #define assert(ex) {if (!(ex)) assert1();} #endif #if DEBUG == 2 #define assert(ex) {if (!(ex)) assert2(__FILE__, __LINE__);} #endif #define CTRL(x) ((x) & 037) #define lowb(z) ((int)(z) & 0xFF) #define loww(z) ((int)(z) & 0xFFFF) #define fitb(x) ((((x) + 0x80) & ~((int)0xFF)) == 0) #define fitw(x) ((((x) + 0x8000L) & ~0xFFFFL) == 0) #define fit(x) if (!(x)) nofit() #define PASS_1 0 #define PASS_2 1 #define PASS_3 2 #ifdef THREE_PASS #define PASS_SYMB (pass != PASS_1) #define PASS_RELO (pass != PASS_1) #else #define PASS_SYMB 1 #define PASS_RELO 1 #endif /* THREE_PASS */ #ifdef ASLD #define RELOMOVE(a,b) /* empty */ #else #define RELOMOVE(a,b) {a = b; b = 0;} #endif /* symbol table management */ #define H_SIZE 307 /* hash size, must be od */ #define H_KEY (0*H_SIZE) /* key symbol headers */ #define H_LOCAL (1*H_SIZE) /* module symbol headers */ #ifdef ASLD #define H_GLOBAL (2*H_SIZE) /* external symbol headers */ #define H_TOTAL (3*H_SIZE) #else #define H_TOTAL (2*H_SIZE) #endif /* numeric label table management */ #define FB_SIZE 10 #define FB_HEAD (0*FB_SIZE) #define FB_TAIL (1*FB_SIZE) #define FB_BACK (2*FB_SIZE) #define FB_FORW (3*FB_SIZE) /* miscellaneous */ #define KEYDEFINE 0 #define KEYSECT 12 #define DOTGAIN DOTSCT->s_gain /* ========== type declarations ========== */ struct expr_t { short typ; valu_t val; }; typedef struct expr_t expr_t; struct item_t { struct item_t * i_next; /* linked lists with same hash value */ short i_type; /* * the i_type field is used for two different purposes: * - the token type for keywords, returned by yylex() * - the symbol type for IDENT and FBSYM tokens */ valu_t i_valu; /* symbol value */ char *i_name; /* symbol name */ }; struct common_t { struct common_t * c_next; struct item_t *c_it; #ifndef ASLD valu_t c_size; #endif }; typedef struct common_t common_t; typedef struct item_t item_t; struct sect_t { short s_flag; /* some flag bits */ ADDR_T s_base; /* section base */ ADDR_T s_size; /* section size */ ADDR_T s_comm; /* length of commons */ ADDR_T s_zero; /* delayed emit1(0) */ ADDR_T s_lign; /* section alignment */ long s_foff; /* section file offset */ item_t *s_item; /* points to section name */ #ifdef THREE_PASS ADDR_T s_gain; /* gain in PASS_2 */ #endif }; typedef struct sect_t sect_t; /* ========== flag field bits ========== */ /* s_flag bits: */ #define BASED 1 /* at fixed position */ /* sflag bits: */ #define SYM_EXT 001 /* external symbols */ #define SYM_LOC 002 /* local symbols */ #define SYM_LAB 004 /* local, compiler-generated labels */ #define SYM_SMB 010 /* .symb symbols */ #define SYM_LIN 020 /* .line and .file */ #define SYM_SCT 040 /* section names */ #define SYM_DEF 073 /* default value */ /* * extra type bits out of S_ETC, internal use only * S_VAR: * - type not known at end of PASS_1 (S_VAR|S_UND) * - value not known at end of PASS_2 (S_VAR|S_ABS) * S_DOT: * - dot expression */ #define S_VAR 0x0200 #define S_DOT 0x0400 /* should be tested by preprocessor * due to error in preprocessor it cannot * test performed at compiletime by a switch now * #if (S_ETC|S_COM|S_VAR|S_DOT) != S_ETC * incorrect type bits * #endif */ /* parts of the a.out file */ #define PARTEMIT 0 #define PARTRELO 1 #define PARTNAME 2 #define PARTCHAR 3 #define PARTS 4 #ifdef BYTES_REVERSED #ifdef WORDS_REVERSED #define MACHREL_BWR (RELBR|RELWR) #else #define MACHREL_BWR (RELBR) #endif #else #ifdef WORDS_REVERSED #define MACHREL_BWR (RELWR) #else #define MACHREL_BWR (0) #endif #endif