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Diffstat (limited to 'gas/gasp.c')
| -rw-r--r-- | gas/gasp.c | 3750 |
1 files changed, 0 insertions, 3750 deletions
diff --git a/gas/gasp.c b/gas/gasp.c deleted file mode 100644 index d8b98b32baf..00000000000 --- a/gas/gasp.c +++ /dev/null @@ -1,3750 +0,0 @@ -/* gasp.c - Gnu assembler preprocessor main program. - Copyright (C) 1994, 95, 96, 97, 98, 1999 Free Software Foundation, Inc. - - Written by Steve and Judy Chamberlain of Cygnus Support, - sac@cygnus.com - - This file is part of GASP, the GNU Assembler Preprocessor. - - GASP is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2, or (at your option) - any later version. - - GASP is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with GASP; see the file COPYING. If not, write to the Free - Software Foundation, 59 Temple Place - Suite 330, Boston, MA - 02111-1307, USA. */ - -/* - -This program translates the input macros and stuff into a form -suitable for gas to consume. - - - gasp [-sdhau] [-c char] [-o <outfile>] <infile>* - - -s copy source to output - -c <char> comments are started with <char> instead of ! - -u allow unreasonable stuff - -p print line numbers - -d print debugging stats - -s semi colons start comments - -a use alternate syntax - Pseudo ops can start with or without a . - Labels have to be in first column. - -I specify include dir - Macro arg parameters subsituted by name, don't need the &. - String can start with ' too. - Strings can be surrounded by <..> - A %<exp> in a string evaluates the expression - Literal char in a string with ! - - -*/ - -#include "config.h" - -#include <stdio.h> -#include <string.h> -#include <getopt.h> -#include <ctype.h> - -#ifdef HAVE_STDLIB_H -#include <stdlib.h> -#endif - -#ifdef NEED_MALLOC_DECLARATION -extern char *malloc (); -#endif - -#include "ansidecl.h" -#include "libiberty.h" -#include "sb.h" -#include "macro.h" -#include "asintl.h" - -char *program_version = "1.2"; - -/* This is normally declared in as.h, but we don't include that. We - need the function because other files linked with gasp.c might call - it. */ -extern void as_abort PARAMS ((const char *, int, const char *)); - -/* The default obstack chunk size. If we set this to zero, the - obstack code will use whatever will fit in a 4096 byte block. This - is used by the hash table code used by macro.c. */ -int chunksize = 0; - -#define MAX_INCLUDES 30 /* Maximum include depth */ -#define MAX_REASONABLE 1000 /* Maximum number of expansions */ - -int unreasonable; /* -u on command line */ -int stats; /* -d on command line */ -int print_line_number; /* -p flag on command line */ -int copysource; /* -c flag on command line */ -int warnings; /* Number of WARNINGs generated so far. */ -int errors; /* Number of ERRORs generated so far. */ -int fatals; /* Number of fatal ERRORs generated so far (either 0 or 1). */ -int alternate = 0; /* -a on command line */ -int mri = 0; /* -M on command line */ -char comment_char = '!'; -int radix = 10; /* Default radix */ - -int had_end; /* Seen .END */ - -/* The output stream */ -FILE *outfile; - -/* the attributes of each character are stored as a bit pattern - chartype, which gives us quick tests. */ - - -#define FIRSTBIT 1 -#define NEXTBIT 2 -#define SEPBIT 4 -#define WHITEBIT 8 -#define COMMENTBIT 16 -#define BASEBIT 32 -#define ISCOMMENTCHAR(x) (chartype[(unsigned char)(x)] & COMMENTBIT) -#define ISFIRSTCHAR(x) (chartype[(unsigned char)(x)] & FIRSTBIT) -#define ISNEXTCHAR(x) (chartype[(unsigned char)(x)] & NEXTBIT) -#define ISSEP(x) (chartype[(unsigned char)(x)] & SEPBIT) -#define ISWHITE(x) (chartype[(unsigned char)(x)] & WHITEBIT) -#define ISBASE(x) (chartype[(unsigned char)(x)] & BASEBIT) -static char chartype[256]; - - -/* Conditional assembly uses the `ifstack'. Each aif pushes another - entry onto the stack, and sets the on flag if it should. The aelse - sets hadelse, and toggles on. An aend pops a level. We limit to - 100 levels of nesting, not because we're facists pigs with read - only minds, but because more than 100 levels of nesting is probably - a bug in the user's macro structure. */ - -#define IFNESTING 100 -struct - { - int on; /* is the level being output */ - int hadelse; /* has an aelse been seen */ - } -ifstack[IFNESTING]; -int ifi; - -/* The final and intermediate results of expression evaluation are kept in - exp_t's. Note that a symbol is not an sb, but a pointer into the input - line. It must be coped somewhere safe before the next line is read in. */ - -typedef struct - { - char *name; - int len; - } -symbol; - -typedef struct - { - int value; /* constant part */ - symbol add_symbol; /* name part */ - symbol sub_symbol; /* name part */ - } -exp_t; - - -/* Hashing is done in a pretty standard way. A hash_table has a - pointer to a vector of pointers to hash_entrys, and the size of the - vector. A hash_entry contains a union of all the info we like to - store in hash table. If there is a hash collision, hash_entries - with the same hash are kept in a chain. */ - -/* What the data in a hash_entry means */ -typedef enum - { - hash_integer, /* name->integer mapping */ - hash_string, /* name->string mapping */ - hash_macro, /* name is a macro */ - hash_formal /* name is a formal argument */ - } hash_type; - -typedef struct hs - { - sb key; /* symbol name */ - hash_type type; /* symbol meaning */ - union - { - sb s; - int i; - struct macro_struct *m; - struct formal_struct *f; - } value; - struct hs *next; /* next hash_entry with same hash key */ - } hash_entry; - -typedef struct - { - hash_entry **table; - int size; - } hash_table; - - -/* Structures used to store macros. - - Each macro knows its name and included text. It gets built with a - list of formal arguments, and also keeps a hash table which points - into the list to speed up formal search. Each formal knows its - name and its default value. Each time the macro is expanded, the - formals get the actual values attatched to them. */ - -/* describe the formal arguments to a macro */ - -typedef struct formal_struct - { - struct formal_struct *next; /* next formal in list */ - sb name; /* name of the formal */ - sb def; /* the default value */ - sb actual; /* the actual argument (changed on each expansion) */ - int index; /* the index of the formal 0..formal_count-1 */ - } -formal_entry; - -/* describe the macro. */ - -typedef struct macro_struct - { - sb sub; /* substitution text. */ - int formal_count; /* number of formal args. */ - formal_entry *formals; /* pointer to list of formal_structs */ - hash_table formal_hash; /* hash table of formals. */ - } -macro_entry; - -/* how we nest files and expand macros etc. - - we keep a stack of of include_stack structs. each include file - pushes a new level onto the stack. we keep an sb with a pushback - too. unget chars are pushed onto the pushback sb, getchars first - checks the pushback sb before reading from the input stream. - - small things are expanded by adding the text of the item onto the - pushback sb. larger items are grown by pushing a new level and - allocating the entire pushback buf for the item. each time - something like a macro is expanded, the stack index is changed. we - can then perform an exitm by popping all entries off the stack with - the same stack index. if we're being reasonable, we can detect - recusive expansion by checking the index is reasonably small. - */ - -typedef enum - { - include_file, include_repeat, include_while, include_macro - } include_type; - -struct include_stack - { - sb pushback; /* current pushback stream */ - int pushback_index; /* next char to read from stream */ - FILE *handle; /* open file */ - sb name; /* name of file */ - int linecount; /* number of lines read so far */ - include_type type; - int index; /* index of this layer */ - } -include_stack[MAX_INCLUDES]; - -struct include_stack *sp; -#define isp (sp - include_stack) - -/* Include file list */ - -typedef struct include_path -{ - struct include_path *next; - sb path; -} include_path; - -include_path *paths_head; -include_path *paths_tail; - - -static void quit PARAMS ((void)); -static void hash_new_table PARAMS ((int, hash_table *)); -static int hash PARAMS ((sb *)); -static hash_entry *hash_create PARAMS ((hash_table *, sb *)); -static void hash_add_to_string_table PARAMS ((hash_table *, sb *, sb *, int)); -static void hash_add_to_int_table PARAMS ((hash_table *, sb *, int)); -static hash_entry *hash_lookup PARAMS ((hash_table *, sb *)); -static void checkconst PARAMS ((int, exp_t *)); -static int sb_strtol PARAMS ((int, sb *, int, int *)); -static int level_0 PARAMS ((int, sb *, exp_t *)); -static int level_1 PARAMS ((int, sb *, exp_t *)); -static int level_2 PARAMS ((int, sb *, exp_t *)); -static int level_3 PARAMS ((int, sb *, exp_t *)); -static int level_4 PARAMS ((int, sb *, exp_t *)); -static int level_5 PARAMS ((int, sb *, exp_t *)); -static int exp_parse PARAMS ((int, sb *, exp_t *)); -static void exp_string PARAMS ((exp_t *, sb *)); -static int exp_get_abs PARAMS ((const char *, int, sb *, int *)); -#if 0 -static void strip_comments PARAMS ((sb *)); -#endif -static void unget PARAMS ((int)); -static void include_buf PARAMS ((sb *, sb *, include_type, int)); -static void include_print_where_line PARAMS ((FILE *)); -static void include_print_line PARAMS ((FILE *)); -static int get_line PARAMS ((sb *)); -static int grab_label PARAMS ((sb *, sb *)); -static void change_base PARAMS ((int, sb *, sb *)); -static void do_end PARAMS ((sb *)); -static void do_assign PARAMS ((int, int, sb *)); -static void do_radix PARAMS ((sb *)); -static int get_opsize PARAMS ((int, sb *, int *)); -static int eol PARAMS ((int, sb *)); -static void do_data PARAMS ((int, sb *, int)); -static void do_datab PARAMS ((int, sb *)); -static void do_align PARAMS ((int, sb *)); -static void do_res PARAMS ((int, sb *, int)); -static void do_export PARAMS ((sb *)); -static void do_print PARAMS ((int, sb *)); -static void do_heading PARAMS ((int, sb *)); -static void do_page PARAMS ((void)); -static void do_form PARAMS ((int, sb *)); -static int get_any_string PARAMS ((int, sb *, sb *, int, int)); -static int skip_openp PARAMS ((int, sb *)); -static int skip_closep PARAMS ((int, sb *)); -static int dolen PARAMS ((int, sb *, sb *)); -static int doinstr PARAMS ((int, sb *, sb *)); -static int dosubstr PARAMS ((int, sb *, sb *)); -static void process_assigns PARAMS ((int, sb *, sb *)); -static int get_and_process PARAMS ((int, sb *, sb *)); -static void process_file PARAMS ((void)); -static void free_old_entry PARAMS ((hash_entry *)); -static void do_assigna PARAMS ((int, sb *)); -static void do_assignc PARAMS ((int, sb *)); -static void do_reg PARAMS ((int, sb *)); -static int condass_lookup_name PARAMS ((sb *, int, sb *, int)); -static int whatcond PARAMS ((int, sb *, int *)); -static int istrue PARAMS ((int, sb *)); -static void do_aif PARAMS ((int, sb *)); -static void do_aelse PARAMS ((void)); -static void do_aendi PARAMS ((void)); -static int condass_on PARAMS ((void)); -static void do_if PARAMS ((int, sb *, int)); -static int get_mri_string PARAMS ((int, sb *, sb *, int)); -static void do_ifc PARAMS ((int, sb *, int)); -static void do_aendr PARAMS ((void)); -static void do_awhile PARAMS ((int, sb *)); -static void do_aendw PARAMS ((void)); -static void do_exitm PARAMS ((void)); -static void do_arepeat PARAMS ((int, sb *)); -static void do_endm PARAMS ((void)); -static void do_irp PARAMS ((int, sb *, int)); -static void do_local PARAMS ((int, sb *)); -static void do_macro PARAMS ((int, sb *)); -static int macro_op PARAMS ((int, sb *)); -static int getstring PARAMS ((int, sb *, sb *)); -static void do_sdata PARAMS ((int, sb *, int)); -static void do_sdatab PARAMS ((int, sb *)); -static int new_file PARAMS ((const char *)); -static void do_include PARAMS ((int, sb *)); -static void include_pop PARAMS ((void)); -static int get PARAMS ((void)); -static int linecount PARAMS ((void)); -static int include_next_index PARAMS ((void)); -static void chartype_init PARAMS ((void)); -static int process_pseudo_op PARAMS ((int, sb *, sb *)); -static void add_keyword PARAMS ((const char *, int)); -static void process_init PARAMS ((void)); -static void do_define PARAMS ((const char *)); -static void show_usage PARAMS ((FILE *, int)); -static void show_help PARAMS ((void)); - -#define FATAL(x) \ - do { include_print_where_line (stderr); fprintf x ; fatals++; quit(); } while(0) -#define ERROR(x) \ - do { include_print_where_line (stderr); fprintf x; errors++; } while(0) -#define WARNING(x) \ - do { include_print_where_line (stderr); fprintf x; warnings++;} while(0) - - - -/* exit the program and return the right ERROR code. */ -static void -quit () -{ - int exitcode; - if (fatals + errors) - exitcode = 1; - else - exitcode = 0; - - if (stats) - { - int i; - for (i = 0; i < sb_max_power_two; i++) - { - fprintf (stderr, "strings size %8d : %d\n", 1<<i, string_count[i]); - } - } - exit (exitcode); -} - -/* hash table maintenance. */ - -/* build a new hash table with size buckets, and fill in the info at ptr. */ - -static void -hash_new_table (size, ptr) - int size; - hash_table *ptr; -{ - int i; - ptr->size = size; - ptr->table = (hash_entry **) xmalloc (size * (sizeof (hash_entry *))); - /* Fill with null-pointer, not zero-bit-pattern. */ - for (i = 0; i < size; i++) - ptr->table[i] = 0; -} - -/* calculate and return the hash value of the sb at key. */ - -static int -hash (key) - sb *key; -{ - int k = 0x1234; - int i; - char *p = key->ptr; - for (i = 0; i < key->len; i++) - { - k ^= (k << 2) ^ *p; - p++; - } - return k & 0xf0fff; -} - -/* lookup key in hash_table tab, if present, then return it, otherwise - build a new one and fill it with hash_integer. */ - -static -hash_entry * -hash_create (tab, key) - hash_table *tab; - sb *key; -{ - int k = hash (key) % tab->size; - hash_entry *p; - hash_entry **table = tab->table; - - p = table[k]; - - while (1) - { - if (!p) - { - hash_entry *n = (hash_entry *) xmalloc (sizeof (hash_entry)); - n->next = table[k]; - sb_new (&n->key); - sb_add_sb (&n->key, key); - table[k] = n; - n->type = hash_integer; - return n; - } - if (strncmp (table[k]->key.ptr, key->ptr, key->len) == 0) - { - return p; - } - p = p->next; - } -} - -/* add sb name with key into hash_table tab. if replacing old value - and again, then ERROR. */ - -static -void -hash_add_to_string_table (tab, key, name, again) - hash_table *tab; - sb *key; - sb *name; - int again; -{ - hash_entry *ptr = hash_create (tab, key); - if (ptr->type == hash_integer) - { - sb_new (&ptr->value.s); - } - if (ptr->value.s.len) - { - if (!again) - ERROR ((stderr, _("redefinition not allowed\n"))); - } - - ptr->type = hash_string; - sb_reset (&ptr->value.s); - - sb_add_sb (&ptr->value.s, name); -} - -/* add integer name to hash_table tab with sb key. */ - -static -void -hash_add_to_int_table (tab, key, name) - hash_table *tab; - sb *key; - int name; -{ - hash_entry *ptr = hash_create (tab, key); - ptr->value.i = name; -} - -/* lookup sb key in hash_table tab. if found return hash_entry result, - else 0. */ - -static -hash_entry * -hash_lookup (tab, key) - hash_table *tab; - sb *key; -{ - int k = hash (key) % tab->size; - hash_entry **table = tab->table; - hash_entry *p = table[k]; - while (p) - { - if (p->key.len == key->len - && strncmp (p->key.ptr, key->ptr, key->len) == 0) - return p; - p = p->next; - } - return 0; -} - - -/* expressions - - are handled in a really simple recursive decent way. each bit of - the machine takes an index into an sb and a pointer to an exp_t, - modifies the *exp_t and returns the index of the first character - past the part of the expression parsed. - - expression precedence: - ( ) - unary + - ~ - * / - + - - & - | ~ - -*/ - - -/* make sure that the exp_t at term is constant, if not the give the op ERROR. */ - -static -void -checkconst (op, term) - int op; - exp_t *term; -{ - if (term->add_symbol.len - || term->sub_symbol.len) - { - ERROR ((stderr, _("the %c operator cannot take non-absolute arguments.\n"), op)); - } -} - -/* turn the number in string at idx into a number of base, - fill in ptr and return the index of the first character not in the - number. */ - -static -int -sb_strtol (idx, string, base, ptr) - int idx; - sb *string; - int base; - int *ptr; -{ - int value = 0; - idx = sb_skip_white (idx, string); - - while (idx < string->len) - { - int ch = string->ptr[idx]; - int dig = 0; - if (isdigit (ch)) - dig = ch - '0'; - else if (ch >= 'a' && ch <= 'f') - dig = ch - 'a' + 10; - else if (ch >= 'A' && ch <= 'F') - dig = ch - 'A' + 10; - else - break; - - if (dig >= base) - break; - - value = value * base + dig; - idx++; - } - *ptr = value; - return idx; -} - -static int -level_0 (idx, string, lhs) - int idx; - sb *string; - exp_t *lhs; -{ - lhs->add_symbol.len = 0; - lhs->add_symbol.name = 0; - - lhs->sub_symbol.len = 0; - lhs->sub_symbol.name = 0; - - idx = sb_skip_white (idx, string); - - lhs->value = 0; - - if (isdigit ((unsigned char) string->ptr[idx])) - { - idx = sb_strtol (idx, string, 10, &lhs->value); - } - else if (ISFIRSTCHAR (string->ptr[idx])) - { - int len = 0; - lhs->add_symbol.name = string->ptr + idx; - while (idx < string->len && ISNEXTCHAR (string->ptr[idx])) - { - idx++; - len++; - } - lhs->add_symbol.len = len; - } - else if (string->ptr[idx] == '"') - { - sb acc; - sb_new (&acc); - ERROR ((stderr, _("string where expression expected.\n"))); - idx = getstring (idx, string, &acc); - sb_kill (&acc); - } - else - { - ERROR ((stderr, _("can't find primary in expression.\n"))); - idx++; - } - return sb_skip_white (idx, string); -} - - - -static int -level_1 (idx, string, lhs) - int idx; - sb *string; - exp_t *lhs; -{ - idx = sb_skip_white (idx, string); - - switch (string->ptr[idx]) - { - case '+': - idx = level_1 (idx + 1, string, lhs); - break; - case '~': - idx = level_1 (idx + 1, string, lhs); - checkconst ('~', lhs); - lhs->value = ~lhs->value; - break; - case '-': - { - symbol t; - idx = level_1 (idx + 1, string, lhs); - lhs->value = -lhs->value; - t = lhs->add_symbol; - lhs->add_symbol = lhs->sub_symbol; - lhs->sub_symbol = t; - break; - } - case '(': - idx++; - idx = level_5 (sb_skip_white (idx, string), string, lhs); - if (string->ptr[idx] != ')') - ERROR ((stderr, _("misplaced closing parens.\n"))); - else - idx++; - break; - default: - idx = level_0 (idx, string, lhs); - break; - } - return sb_skip_white (idx, string); -} - -static int -level_2 (idx, string, lhs) - int idx; - sb *string; - exp_t *lhs; -{ - exp_t rhs; - - idx = level_1 (idx, string, lhs); - - while (idx < string->len && (string->ptr[idx] == '*' - || string->ptr[idx] == '/')) - { - char op = string->ptr[idx++]; - idx = level_1 (idx, string, &rhs); - switch (op) - { - case '*': - checkconst ('*', lhs); - checkconst ('*', &rhs); - lhs->value *= rhs.value; - break; - case '/': - checkconst ('/', lhs); - checkconst ('/', &rhs); - if (rhs.value == 0) - ERROR ((stderr, _("attempt to divide by zero.\n"))); - else - lhs->value /= rhs.value; - break; - } - } - return sb_skip_white (idx, string); -} - - -static int -level_3 (idx, string, lhs) - int idx; - sb *string; - exp_t *lhs; -{ - exp_t rhs; - - idx = level_2 (idx, string, lhs); - - while (idx < string->len - && (string->ptr[idx] == '+' - || string->ptr[idx] == '-')) - { - char op = string->ptr[idx++]; - idx = level_2 (idx, string, &rhs); - switch (op) - { - case '+': - lhs->value += rhs.value; - if (lhs->add_symbol.name && rhs.add_symbol.name) - { - ERROR ((stderr, _("can't add two relocatable expressions\n"))); - } - /* change nn+symbol to symbol + nn */ - if (rhs.add_symbol.name) - { - lhs->add_symbol = rhs.add_symbol; - } - break; - case '-': - lhs->value -= rhs.value; - lhs->sub_symbol = rhs.add_symbol; - break; - } - } - return sb_skip_white (idx, string); -} - -static int -level_4 (idx, string, lhs) - int idx; - sb *string; - exp_t *lhs; -{ - exp_t rhs; - - idx = level_3 (idx, string, lhs); - - while (idx < string->len && - string->ptr[idx] == '&') - { - char op = string->ptr[idx++]; - idx = level_3 (idx, string, &rhs); - switch (op) - { - case '&': - checkconst ('&', lhs); - checkconst ('&', &rhs); - lhs->value &= rhs.value; - break; - } - } - return sb_skip_white (idx, string); -} - -static int -level_5 (idx, string, lhs) - int idx; - sb *string; - exp_t *lhs; -{ - exp_t rhs; - - idx = level_4 (idx, string, lhs); - - while (idx < string->len - && (string->ptr[idx] == '|' || string->ptr[idx] == '~')) - { - char op = string->ptr[idx++]; - idx = level_4 (idx, string, &rhs); - switch (op) - { - case '|': - checkconst ('|', lhs); - checkconst ('|', &rhs); - lhs->value |= rhs.value; - break; - case '~': - checkconst ('~', lhs); - checkconst ('~', &rhs); - lhs->value ^= rhs.value; - break; - } - } - return sb_skip_white (idx, string); -} - - -/* parse the expression at offset idx into string, fill up res with - the result. return the index of the first char past the expression. - */ - -static int -exp_parse (idx, string, res) - int idx; - sb *string; - exp_t *res; -{ - return level_5 (sb_skip_white (idx, string), string, res); -} - - -/* turn the expression at exp into text and glue it onto the end of - string. */ - -static void -exp_string (exp, string) - exp_t *exp; - sb *string; -{ - int np = 0; - int ad = 0; - sb_reset (string); - - if (exp->add_symbol.len) - { - sb_add_buffer (string, exp->add_symbol.name, exp->add_symbol.len); - np = 1; - ad = 1; - } - if (exp->value) - { - char buf[20]; - if (np) - sb_add_char (string, '+'); - sprintf (buf, "%d", exp->value); - sb_add_string (string, buf); - np = 1; - ad = 1; - } - if (exp->sub_symbol.len) - { - sb_add_char (string, '-'); - sb_add_buffer (string, exp->add_symbol.name, exp->add_symbol.len); - np = 0; - ad = 1; - } - - if (!ad) - sb_add_char (string, '0'); -} - - -/* parse the expression at offset idx into sb in, return the value in val. - if the expression is not constant, give ERROR emsg. returns the index - of the first character past the end of the expression. */ - -static int -exp_get_abs (emsg, idx, in, val) - const char *emsg; - int idx; - sb *in; - int *val; -{ - exp_t res; - idx = exp_parse (idx, in, &res); - if (res.add_symbol.len || res.sub_symbol.len) - ERROR ((stderr, emsg)); - *val = res.value; - return idx; -} - - -sb label; /* current label parsed from line */ -hash_table assign_hash_table; /* hash table for all assigned variables */ -hash_table keyword_hash_table; /* hash table for keyword */ -hash_table vars; /* hash table for eq variables */ - -#define in_comment ';' - -#if 0 -static void -strip_comments (out) - sb *out; -{ - char *s = out->ptr; - int i = 0; - for (i = 0; i < out->len; i++) - { - if (ISCOMMENTCHAR(s[i])) - { - out->len = i; - return; - } - } -} -#endif - -/* push back character ch so that it can be read again. */ - -static void -unget (ch) - int ch; -{ - if (ch == '\n') - { - sp->linecount--; - } - if (sp->pushback_index) - sp->pushback_index--; - else - sb_add_char (&sp->pushback, ch); -} - -/* push the sb ptr onto the include stack, with the given name, type and index. */ - -static -void -include_buf (name, ptr, type, index) - sb *name; - sb *ptr; - include_type type; - int index; -{ - sp++; - if (sp - include_stack >= MAX_INCLUDES) - FATAL ((stderr, _("unreasonable nesting.\n"))); - sb_new (&sp->name); - sb_add_sb (&sp->name, name); - sp->handle = 0; - sp->linecount = 1; - sp->pushback_index = 0; - sp->type = type; - sp->index = index; - sb_new (&sp->pushback); - sb_add_sb (&sp->pushback, ptr); -} - - -/* used in ERROR messages, print info on where the include stack is onto file. */ -static -void -include_print_where_line (file) - FILE *file; -{ - struct include_stack *p = include_stack + 1; - - while (p <= sp) - { - fprintf (file, "%s:%d ", sb_name (&p->name), p->linecount - 1); - p++; - } -} - -/* used in listings, print the line number onto file. */ -static void -include_print_line (file) - FILE *file; -{ - int n; - struct include_stack *p = include_stack + 1; - - n = fprintf (file, "%4d", p->linecount); - p++; - while (p <= sp) - { - n += fprintf (file, ".%d", p->linecount); - p++; - } - while (n < 8 * 3) - { - fprintf (file, " "); - n++; - } -} - - -/* read a line from the top of the include stack into sb in. */ - -static int -get_line (in) - sb *in; -{ - int online = 0; - int more = 1; - - if (copysource) - { - putc (comment_char, outfile); - if (print_line_number) - include_print_line (outfile); - } - - while (1) - { - int ch = get (); - - while (ch == '\r') - ch = get (); - - if (ch == EOF) - { - if (online) - { - WARNING ((stderr, _("End of file not at start of line.\n"))); - if (copysource) - putc ('\n', outfile); - ch = '\n'; - } - else - more = 0; - break; - } - - if (copysource) - { - putc (ch, outfile); - } - - if (ch == '\n') - { - ch = get (); - online = 0; - if (ch == '+') - { - /* continued line */ - if (copysource) - { - putc (comment_char, outfile); - putc ('+', outfile); - } - ch = get (); - } - else - { - if (ch != EOF) - unget (ch); - break; - } - } - else - { - sb_add_char (in, ch); - } - online++; - } - - return more; -} - -/* find a label from sb in and put it in out. */ - -static int -grab_label (in, out) - sb *in; - sb *out; -{ - int i = 0; - sb_reset (out); - if (ISFIRSTCHAR (in->ptr[i]) || in->ptr[i] == '\\') - { - sb_add_char (out, in->ptr[i]); - i++; - while ((ISNEXTCHAR (in->ptr[i]) - || in->ptr[i] == '\\' - || in->ptr[i] == '&') - && i < in->len) - { - sb_add_char (out, in->ptr[i]); - i++; - } - } - return i; -} - -/* find all strange base stuff and turn into decimal. also - find all the other numbers and convert them from the default radix */ - -static void -change_base (idx, in, out) - int idx; - sb *in; - sb *out; -{ - char buffer[20]; - - while (idx < in->len) - { - if (in->ptr[idx] == '\\' - && idx + 1 < in->len - && in->ptr[idx + 1] == '(') - { - idx += 2; - while (idx < in->len - && in->ptr[idx] != ')') - { - sb_add_char (out, in->ptr[idx]); - idx++; - } - if (idx < in->len) - idx++; - } - else if (idx < in->len - 1 && in->ptr[idx + 1] == '\'' && ! mri) - { - int base; - int value; - switch (in->ptr[idx]) - { - case 'b': - case 'B': - base = 2; - break; - case 'q': - case 'Q': - base = 8; - break; - case 'h': - case 'H': - base = 16; - break; - case 'd': - case 'D': - base = 10; - break; - default: - ERROR ((stderr, _("Illegal base character %c.\n"), in->ptr[idx])); - base = 10; - break; - } - - idx = sb_strtol (idx + 2, in, base, &value); - sprintf (buffer, "%d", value); - sb_add_string (out, buffer); - } - else if (ISFIRSTCHAR (in->ptr[idx])) - { - /* copy entire names through quickly */ - sb_add_char (out, in->ptr[idx]); - idx++; - while (idx < in->len && ISNEXTCHAR (in->ptr[idx])) - { - sb_add_char (out, in->ptr[idx]); - idx++; - } - } - else if (isdigit ((unsigned char) in->ptr[idx])) - { - int value; - /* all numbers must start with a digit, let's chew it and - spit out decimal */ - idx = sb_strtol (idx, in, radix, &value); - sprintf (buffer, "%d", value); - sb_add_string (out, buffer); - - /* skip all undigsested letters */ - while (idx < in->len && ISNEXTCHAR (in->ptr[idx])) - { - sb_add_char (out, in->ptr[idx]); - idx++; - } - } - else if (in->ptr[idx] == '"' || in->ptr[idx] == '\'') - { - char tchar = in->ptr[idx]; - /* copy entire names through quickly */ - sb_add_char (out, in->ptr[idx]); - idx++; - while (idx < in->len && in->ptr[idx] != tchar) - { - sb_add_char (out, in->ptr[idx]); - idx++; - } - } - else - { - /* nothing special, just pass it through */ - sb_add_char (out, in->ptr[idx]); - idx++; - } - } - -} - -/* .end */ -static void -do_end (in) - sb *in; -{ - had_end = 1; - if (mri) - fprintf (outfile, "%s\n", sb_name (in)); -} - -/* .assign */ - -static void -do_assign (again, idx, in) - int again; - int idx; - sb *in; -{ - /* stick label in symbol table with following value */ - exp_t e; - sb acc; - - sb_new (&acc); - idx = exp_parse (idx, in, &e); - exp_string (&e, &acc); - hash_add_to_string_table (&assign_hash_table, &label, &acc, again); - sb_kill (&acc); -} - - -/* .radix [b|q|d|h] */ - -static -void -do_radix (ptr) - sb *ptr; -{ - int idx = sb_skip_white (0, ptr); - switch (ptr->ptr[idx]) - { - case 'B': - case 'b': - radix = 2; - break; - case 'q': - case 'Q': - radix = 8; - break; - case 'd': - case 'D': - radix = 10; - break; - case 'h': - case 'H': - radix = 16; - break; - default: - ERROR ((stderr, _("radix is %c must be one of b, q, d or h"), radix)); - } -} - - -/* Parse off a .b, .w or .l */ - -static int -get_opsize (idx, in, size) - int idx; - sb *in; - int *size; -{ - *size = 4; - if (in->ptr[idx] == '.') - { - idx++; - } - switch (in->ptr[idx]) - { - case 'b': - case 'B': - *size = 1; - break; - case 'w': - case 'W': - *size = 2; - break; - case 'l': - case 'L': - *size = 4; - break; - case ' ': - case '\t': - break; - default: - ERROR ((stderr, _("size must be one of b, w or l, is %c.\n"), in->ptr[idx])); - break; - } - idx++; - - return idx; -} - -static -int eol(idx, line) - int idx; - sb *line; -{ - idx = sb_skip_white (idx, line); - if (idx < line->len - && ISCOMMENTCHAR(line->ptr[idx])) - return 1; - if (idx >= line->len) - return 1; - return 0; -} - -/* .data [.b|.w|.l] <data>* - or d[bwl] <data>* */ - -static void -do_data (idx, in, size) - int idx; - sb *in; - int size; -{ - int opsize = 4; - char *opname = ".yikes!"; - sb acc; - sb_new (&acc); - - if (!size) - { - idx = get_opsize (idx, in, &opsize); - } - else { - opsize = size; - } - switch (opsize) - { - case 4: - opname = ".long"; - break; - case 2: - opname = ".short"; - break; - case 1: - opname = ".byte"; - break; - } - - - fprintf (outfile, "%s\t", opname); - - idx = sb_skip_white (idx, in); - - if (alternate - && idx < in->len - && in->ptr[idx] == '"') - { - int i; - idx = getstring (idx, in, &acc); - for (i = 0; i < acc.len; i++) - { - if (i) - fprintf(outfile,","); - fprintf (outfile, "%d", acc.ptr[i]); - } - } - else - { - while (!eol (idx, in)) - { - exp_t e; - idx = exp_parse (idx, in, &e); - exp_string (&e, &acc); - sb_add_char (&acc, 0); - fprintf (outfile, acc.ptr); - if (idx < in->len && in->ptr[idx] == ',') - { - fprintf (outfile, ","); - idx++; - } - } - } - sb_kill (&acc); - sb_print_at (outfile, idx, in); - fprintf (outfile, "\n"); -} - -/* .datab [.b|.w|.l] <repeat>,<fill> */ - -static void -do_datab (idx, in) - int idx; - sb *in; -{ - int opsize; - int repeat; - int fill; - - idx = get_opsize (idx, in, &opsize); - - idx = exp_get_abs (_("datab repeat must be constant.\n"), idx, in, &repeat); - idx = sb_skip_comma (idx, in); - idx = exp_get_abs (_("datab data must be absolute.\n"), idx, in, &fill); - - fprintf (outfile, ".fill\t%d,%d,%d\n", repeat, opsize, fill); -} - -/* .align <size> */ - -static void -do_align (idx, in) - int idx; - sb *in; -{ - int al, have_fill, fill; - - idx = exp_get_abs (_("align needs absolute expression.\n"), idx, in, &al); - idx = sb_skip_white (idx, in); - have_fill = 0; - fill = 0; - if (! eol (idx, in)) - { - idx = sb_skip_comma (idx, in); - idx = exp_get_abs (_(".align needs absolute fill value.\n"), idx, in, - &fill); - have_fill = 1; - } - - if (al != 1 - && al != 2 - && al != 4) - WARNING ((stderr, _("alignment must be one of 1, 2 or 4.\n"))); - - fprintf (outfile, ".align %d", al); - if (have_fill) - fprintf (outfile, ",%d", fill); - fprintf (outfile, "\n"); -} - -/* .res[.b|.w|.l] <size> */ - -static void -do_res (idx, in, type) - int idx; - sb *in; - int type; -{ - int size = 4; - int count = 0; - - idx = get_opsize (idx, in, &size); - while (!eol(idx, in)) - { - idx = sb_skip_white (idx, in); - if (in->ptr[idx] == ',') - idx++; - idx = exp_get_abs (_("res needs absolute expression for fill count.\n"), idx, in, &count); - - if (type == 'c' || type == 'z') - count++; - - fprintf (outfile, ".space %d\n", count * size); - } -} - - -/* .export */ - -static void -do_export (in) - sb *in; -{ - fprintf (outfile, ".global %s\n", sb_name (in)); -} - -/* .print [list] [nolist] */ - -static void -do_print (idx, in) - int idx; - sb *in; -{ - idx = sb_skip_white (idx, in); - while (idx < in->len) - { - if (strncasecmp (in->ptr + idx, "LIST", 4) == 0) - { - fprintf (outfile, ".list\n"); - idx += 4; - } - else if (strncasecmp (in->ptr + idx, "NOLIST", 6) == 0) - { - fprintf (outfile, ".nolist\n"); - idx += 6; - } - idx++; - } -} - -/* .head */ -static void -do_heading (idx, in) - int idx; - sb *in; -{ - sb head; - sb_new (&head); - idx = getstring (idx, in, &head); - fprintf (outfile, ".title \"%s\"\n", sb_name (&head)); - sb_kill (&head); -} - -/* .page */ - -static void -do_page () -{ - fprintf (outfile, ".eject\n"); -} - -/* .form [lin=<value>] [col=<value>] */ -static void -do_form (idx, in) - int idx; - sb *in; -{ - int lines = 60; - int columns = 132; - idx = sb_skip_white (idx, in); - - while (idx < in->len) - { - - if (strncasecmp (in->ptr + idx, "LIN=", 4) == 0) - { - idx += 4; - idx = exp_get_abs (_("form LIN= needs absolute expresssion.\n"), idx, in, &lines); - } - - if (strncasecmp (in->ptr + idx, _("COL="), 4) == 0) - { - idx += 4; - idx = exp_get_abs (_("form COL= needs absolute expresssion.\n"), idx, in, &columns); - } - - idx++; - } - fprintf (outfile, ".psize %d,%d\n", lines, columns); - -} - - -/* Fetch string from the input stream, - rules: - 'Bxyx<whitespace> -> return 'Bxyza - %<char> -> return string of decimal value of x - "<string>" -> return string - xyx<whitespace> -> return xyz -*/ -static int -get_any_string (idx, in, out, expand, pretend_quoted) - int idx; - sb *in; - sb *out; - int expand; - int pretend_quoted; -{ - sb_reset (out); - idx = sb_skip_white (idx, in); - - if (idx < in->len) - { - if (in->len > 2 && in->ptr[idx+1] == '\'' && ISBASE (in->ptr[idx])) - { - while (!ISSEP (in->ptr[idx])) - sb_add_char (out, in->ptr[idx++]); - } - else if (in->ptr[idx] == '%' - && alternate - && expand) - { - int val; - char buf[20]; - /* Turns the next expression into a string */ - idx = exp_get_abs (_("% operator needs absolute expression"), - idx + 1, - in, - &val); - sprintf(buf, "%d", val); - sb_add_string (out, buf); - } - else if (in->ptr[idx] == '"' - || in->ptr[idx] == '<' - || (alternate && in->ptr[idx] == '\'')) - { - if (alternate && expand) - { - /* Keep the quotes */ - sb_add_char (out, '\"'); - - idx = getstring (idx, in, out); - sb_add_char (out, '\"'); - - } - else { - idx = getstring (idx, in, out); - } - } - else - { - while (idx < in->len - && (in->ptr[idx] == '"' - || in->ptr[idx] == '\'' - || pretend_quoted - || !ISSEP (in->ptr[idx]))) - { - if (in->ptr[idx] == '"' - || in->ptr[idx] == '\'') - { - char tchar = in->ptr[idx]; - sb_add_char (out, in->ptr[idx++]); - while (idx < in->len - && in->ptr[idx] != tchar) - sb_add_char (out, in->ptr[idx++]); - if (idx == in->len) - return idx; - } - sb_add_char (out, in->ptr[idx++]); - } - } - } - - return idx; -} - - -/* skip along sb in starting at idx, suck off whitespace a ( and more - whitespace. return the idx of the next char */ - -static int -skip_openp (idx, in) - int idx; - sb *in; -{ - idx = sb_skip_white (idx, in); - if (in->ptr[idx] != '(') - ERROR ((stderr, _("misplaced ( .\n"))); - idx = sb_skip_white (idx + 1, in); - return idx; -} - -/* skip along sb in starting at idx, suck off whitespace a ) and more - whitespace. return the idx of the next char */ - -static int -skip_closep (idx, in) - int idx; - sb *in; -{ - idx = sb_skip_white (idx, in); - if (in->ptr[idx] != ')') - ERROR ((stderr, _("misplaced ).\n"))); - idx = sb_skip_white (idx + 1, in); - return idx; -} - -/* .len */ - -static int -dolen (idx, in, out) - int idx; - sb *in; - sb *out; -{ - - sb stringout; - char buffer[10]; - - sb_new (&stringout); - idx = skip_openp (idx, in); - idx = get_and_process (idx, in, &stringout); - idx = skip_closep (idx, in); - sprintf (buffer, "%d", stringout.len); - sb_add_string (out, buffer); - - sb_kill (&stringout); - return idx; -} - - -/* .instr */ - -static -int -doinstr (idx, in, out) - int idx; - sb *in; - sb *out; -{ - sb string; - sb search; - int i; - int start; - int res; - char buffer[10]; - - sb_new (&string); - sb_new (&search); - idx = skip_openp (idx, in); - idx = get_and_process (idx, in, &string); - idx = sb_skip_comma (idx, in); - idx = get_and_process (idx, in, &search); - idx = sb_skip_comma (idx, in); - if (isdigit ((unsigned char) in->ptr[idx])) - { - idx = exp_get_abs (_(".instr needs absolute expresson.\n"), idx, in, &start); - } - else - { - start = 0; - } - idx = skip_closep (idx, in); - res = -1; - for (i = start; i < string.len; i++) - { - if (strncmp (string.ptr + i, search.ptr, search.len) == 0) - { - res = i; - break; - } - } - sprintf (buffer, "%d", res); - sb_add_string (out, buffer); - sb_kill (&string); - sb_kill (&search); - return idx; -} - - -static int -dosubstr (idx, in, out) - int idx; - sb *in; - sb *out; -{ - sb string; - int pos; - int len; - sb_new (&string); - - idx = skip_openp (idx, in); - idx = get_and_process (idx, in, &string); - idx = sb_skip_comma (idx, in); - idx = exp_get_abs (_("need absolute position.\n"), idx, in, &pos); - idx = sb_skip_comma (idx, in); - idx = exp_get_abs (_("need absolute length.\n"), idx, in, &len); - idx = skip_closep (idx, in); - - - if (len < 0 || pos < 0 || - pos > string.len - || pos + len > string.len) - { - sb_add_string (out, " "); - } - else - { - sb_add_char (out, '"'); - while (len > 0) - { - sb_add_char (out, string.ptr[pos++]); - len--; - } - sb_add_char (out, '"'); - } - sb_kill(&string); - return idx; -} - -/* scan line, change tokens in the hash table to their replacements */ -static void -process_assigns (idx, in, buf) - int idx; - sb *in; - sb *buf; -{ - while (idx < in->len) - { - hash_entry *ptr; - if (in->ptr[idx] == '\\' - && idx + 1 < in->len - && in->ptr[idx + 1] == '(') - { - do - { - sb_add_char (buf, in->ptr[idx]); - idx++; - } - while (idx < in->len && in->ptr[idx - 1] != ')'); - } - else if (in->ptr[idx] == '\\' - && idx + 1 < in->len - && in->ptr[idx + 1] == '&') - { - idx = condass_lookup_name (in, idx + 2, buf, 1); - } - else if (in->ptr[idx] == '\\' - && idx + 1 < in->len - && in->ptr[idx + 1] == '$') - { - idx = condass_lookup_name (in, idx + 2, buf, 0); - } - else if (idx + 3 < in->len - && in->ptr[idx] == '.' - && toupper ((unsigned char) in->ptr[idx + 1]) == 'L' - && toupper ((unsigned char) in->ptr[idx + 2]) == 'E' - && toupper ((unsigned char) in->ptr[idx + 3]) == 'N') - idx = dolen (idx + 4, in, buf); - else if (idx + 6 < in->len - && in->ptr[idx] == '.' - && toupper ((unsigned char) in->ptr[idx + 1]) == 'I' - && toupper ((unsigned char) in->ptr[idx + 2]) == 'N' - && toupper ((unsigned char) in->ptr[idx + 3]) == 'S' - && toupper ((unsigned char) in->ptr[idx + 4]) == 'T' - && toupper ((unsigned char) in->ptr[idx + 5]) == 'R') - idx = doinstr (idx + 6, in, buf); - else if (idx + 7 < in->len - && in->ptr[idx] == '.' - && toupper ((unsigned char) in->ptr[idx + 1]) == 'S' - && toupper ((unsigned char) in->ptr[idx + 2]) == 'U' - && toupper ((unsigned char) in->ptr[idx + 3]) == 'B' - && toupper ((unsigned char) in->ptr[idx + 4]) == 'S' - && toupper ((unsigned char) in->ptr[idx + 5]) == 'T' - && toupper ((unsigned char) in->ptr[idx + 6]) == 'R') - idx = dosubstr (idx + 7, in, buf); - else if (ISFIRSTCHAR (in->ptr[idx])) - { - /* may be a simple name subsitution, see if we have a word */ - sb acc; - int cur = idx + 1; - while (cur < in->len - && (ISNEXTCHAR (in->ptr[cur]))) - cur++; - - sb_new (&acc); - sb_add_buffer (&acc, in->ptr + idx, cur - idx); - ptr = hash_lookup (&assign_hash_table, &acc); - if (ptr) - { - /* Found a definition for it */ - sb_add_sb (buf, &ptr->value.s); - } - else - { - /* No definition, just copy the word */ - sb_add_sb (buf, &acc); - } - sb_kill (&acc); - idx = cur; - } - else - { - sb_add_char (buf, in->ptr[idx++]); - } - } -} - -static int -get_and_process (idx, in, out) - int idx; - sb *in; - sb *out; -{ - sb t; - sb_new (&t); - idx = get_any_string (idx, in, &t, 1, 0); - process_assigns (0, &t, out); - sb_kill (&t); - return idx; -} - -static -void -process_file () -{ - sb line; - sb t1, t2; - sb acc; - sb label_in; - int more; - - sb_new (&line); - sb_new (&t1); - sb_new (&t2); - sb_new(&acc); - sb_new (&label_in); - sb_reset (&line); - more = get_line (&line); - while (more) - { - /* Find any label and pseudo op that we're intested in */ - int l; - if (line.len == 0) - { - if (condass_on ()) - fprintf (outfile, "\n"); - } - else if (mri - && (line.ptr[0] == '*' - || line.ptr[0] == '!')) - { - /* MRI line comment. */ - fprintf (outfile, sb_name (&line)); - } - else - { - l = grab_label (&line, &label_in); - sb_reset (&label); - - if (line.ptr[l] == ':') - l++; - while (ISWHITE (line.ptr[l]) && l < line.len) - l++; - - if (label_in.len) - { - int do_assigns; - - /* Munge the label, unless this is EQU or ASSIGN. */ - do_assigns = 1; - if (l < line.len - && (line.ptr[l] == '.' || alternate || mri)) - { - int lx = l; - - if (line.ptr[lx] == '.') - ++lx; - if (lx + 3 <= line.len - && strncasecmp ("EQU", line.ptr + lx, 3) == 0 - && (lx + 3 == line.len - || ! ISFIRSTCHAR (line.ptr[lx + 3]))) - do_assigns = 0; - else if (lx + 6 <= line.len - && strncasecmp ("ASSIGN", line.ptr + lx, 6) == 0 - && (lx + 6 == line.len - || ! ISFIRSTCHAR (line.ptr[lx + 6]))) - do_assigns = 0; - } - - if (do_assigns) - process_assigns (0, &label_in, &label); - else - sb_add_sb (&label, &label_in); - } - - if (l < line.len) - { - if (process_pseudo_op (l, &line, &acc)) - { - - - - } - else if (condass_on ()) - { - if (macro_op (l, &line)) - { - - - } - else - { - { - if (label.len) - { - fprintf (outfile, "%s:\t", sb_name (&label)); - } - else - fprintf (outfile, "\t"); - sb_reset(&t1); - process_assigns (l, &line, &t1); - sb_reset (&t2); - change_base (0, &t1, &t2); - fprintf (outfile, "%s\n", sb_name (&t2)); - } - } - } - } - else { - /* Only a label on this line */ - if (label.len && condass_on()) - { - fprintf (outfile, "%s:\n", sb_name (&label)); - } - } - } - - if (had_end) - break; - sb_reset (&line); - more = get_line (&line); - } - - if (!had_end && !mri) - WARNING ((stderr, _("END missing from end of file.\n"))); -} - - - - - -static void -free_old_entry (ptr) - hash_entry *ptr; -{ - if (ptr) - { - if (ptr->type == hash_string) - sb_kill(&ptr->value.s); - } -} - -/* name: .ASSIGNA <value> */ - -static void -do_assigna (idx, in) - int idx; - sb *in; -{ - sb tmp; - int val; - sb_new (&tmp); - - process_assigns (idx, in, &tmp); - idx = exp_get_abs (_(".ASSIGNA needs constant expression argument.\n"), 0, &tmp, &val); - - if (!label.len) - { - ERROR ((stderr, _(".ASSIGNA without label.\n"))); - } - else - { - hash_entry *ptr = hash_create (&vars, &label); - free_old_entry (ptr); - ptr->type = hash_integer; - ptr->value.i = val; - } - sb_kill (&tmp); -} - -/* name: .ASSIGNC <string> */ - -static void -do_assignc (idx, in) - int idx; - sb *in; -{ - sb acc; - sb_new (&acc); - idx = getstring (idx, in, &acc); - - if (!label.len) - { - ERROR ((stderr, _(".ASSIGNS without label.\n"))); - } - else - { - hash_entry *ptr = hash_create (&vars, &label); - free_old_entry (ptr); - ptr->type = hash_string; - sb_new (&ptr->value.s); - sb_add_sb (&ptr->value.s, &acc); - } - sb_kill (&acc); -} - - -/* name: .REG (reg) */ - -static void -do_reg (idx, in) - int idx; - sb *in; -{ - /* remove reg stuff from inside parens */ - sb what; - if (!mri) - idx = skip_openp (idx, in); - else - idx = sb_skip_white (idx, in); - sb_new (&what); - while (idx < in->len - && (mri - ? ! eol (idx, in) - : in->ptr[idx] != ')')) - { - sb_add_char (&what, in->ptr[idx]); - idx++; - } - hash_add_to_string_table (&assign_hash_table, &label, &what, 1); - sb_kill (&what); -} - - -static int -condass_lookup_name (inbuf, idx, out, warn) - sb *inbuf; - int idx; - sb *out; - int warn; -{ - hash_entry *ptr; - sb condass_acc; - sb_new (&condass_acc); - - while (idx < inbuf->len - && ISNEXTCHAR (inbuf->ptr[idx])) - { - sb_add_char (&condass_acc, inbuf->ptr[idx++]); - } - - if (inbuf->ptr[idx] == '\'') - idx++; - ptr = hash_lookup (&vars, &condass_acc); - - - if (!ptr) - { - if (warn) - { - WARNING ((stderr, _("Can't find preprocessor variable %s.\n"), sb_name (&condass_acc))); - } - else - { - sb_add_string (out, "0"); - } - } - else - { - if (ptr->type == hash_integer) - { - char buffer[30]; - sprintf (buffer, "%d", ptr->value.i); - sb_add_string (out, buffer); - } - else - { - sb_add_sb (out, &ptr->value.s); - } - } - sb_kill (&condass_acc); - return idx; -} - -#define EQ 1 -#define NE 2 -#define GE 3 -#define LT 4 -#define LE 5 -#define GT 6 -#define NEVER 7 - -static int -whatcond (idx, in, val) - int idx; - sb *in; - int *val; -{ - int cond; - - idx = sb_skip_white (idx, in); - cond = NEVER; - if (idx + 1 < in->len) - { - char *p; - char a, b; - - p = in->ptr + idx; - a = toupper ((unsigned char) p[0]); - b = toupper ((unsigned char) p[1]); - if (a == 'E' && b == 'Q') - cond = EQ; - else if (a == 'N' && b == 'E') - cond = NE; - else if (a == 'L' && b == 'T') - cond = LT; - else if (a == 'L' && b == 'E') - cond = LE; - else if (a == 'G' && b == 'T') - cond = GT; - else if (a == 'G' && b == 'E') - cond = GE; - } - if (cond == NEVER) - { - ERROR ((stderr, _("Comparison operator must be one of EQ, NE, LT, LE, GT or GE.\n"))); - cond = NEVER; - } - idx = sb_skip_white (idx + 2, in); - *val = cond; - return idx; -} - -static int -istrue (idx, in) - int idx; - sb *in; -{ - int res; - sb acc_a; - sb cond; - sb acc_b; - sb_new (&acc_a); - sb_new (&cond); - sb_new (&acc_b); - idx = sb_skip_white (idx, in); - - if (in->ptr[idx] == '"') - { - int cond; - int same; - /* This is a string comparision */ - idx = getstring (idx, in, &acc_a); - idx = whatcond (idx, in, &cond); - idx = getstring (idx, in, &acc_b); - same = acc_a.len == acc_b.len && (strncmp (acc_a.ptr, acc_b.ptr, acc_a.len) == 0); - - if (cond != EQ && cond != NE) - { - ERROR ((stderr, _("Comparison operator for strings must be EQ or NE\n"))); - res = 0; - } - else - res = (cond != EQ) ^ same; - } - else - /* This is a numeric expression */ - { - int vala; - int valb; - int cond; - idx = exp_get_abs (_("Conditional operator must have absolute operands.\n"), idx, in, &vala); - idx = whatcond (idx, in, &cond); - idx = sb_skip_white (idx, in); - if (in->ptr[idx] == '"') - { - WARNING ((stderr, _("String compared against expression.\n"))); - res = 0; - } - else - { - idx = exp_get_abs (_("Conditional operator must have absolute operands.\n"), idx, in, &valb); - switch (cond) - { - default: - res = 42; - break; - case EQ: - res = vala == valb; - break; - case NE: - res = vala != valb; - break; - case LT: - res = vala < valb; - break; - case LE: - res = vala <= valb; - break; - case GT: - res = vala > valb; - break; - case GE: - res = vala >= valb; - break; - case NEVER: - res = 0; - break; - } - } - } - - sb_kill (&acc_a); - sb_kill (&cond); - sb_kill (&acc_b); - return res; -} - -/* .AIF */ -static void -do_aif (idx, in) - int idx; - sb *in; -{ - if (ifi >= IFNESTING) - { - FATAL ((stderr, _("AIF nesting unreasonable.\n"))); - } - ifi++; - ifstack[ifi].on = ifstack[ifi-1].on ? istrue (idx, in) : 0; - ifstack[ifi].hadelse = 0; -} - - -/* .AELSE */ -static void -do_aelse () -{ - ifstack[ifi].on = ifstack[ifi-1].on ? !ifstack[ifi].on : 0; - if (ifstack[ifi].hadelse) - { - ERROR ((stderr, _("Multiple AELSEs in AIF.\n"))); - } - ifstack[ifi].hadelse = 1; -} - - -/* .AENDI */ -static void -do_aendi () -{ - if (ifi != 0) - { - ifi--; - } - else - { - ERROR ((stderr, _("AENDI without AIF.\n"))); - } -} - -static int -condass_on () -{ - return ifstack[ifi].on; -} - -/* MRI IFEQ, IFNE, IFLT, IFLE, IFGE, IFGT. */ - -static void -do_if (idx, in, cond) - int idx; - sb *in; - int cond; -{ - int val; - int res; - - if (ifi >= IFNESTING) - { - FATAL ((stderr, _("IF nesting unreasonable.\n"))); - } - - idx = exp_get_abs (_("Conditional operator must have absolute operands.\n"), - idx, in, &val); - switch (cond) - { - default: - case EQ: res = val == 0; break; - case NE: res = val != 0; break; - case LT: res = val < 0; break; - case LE: res = val <= 0; break; - case GE: res = val >= 0; break; - case GT: res = val > 0; break; - } - - ifi++; - ifstack[ifi].on = ifstack[ifi-1].on ? res: 0; - ifstack[ifi].hadelse = 0; -} - -/* Get a string for the MRI IFC or IFNC pseudo-ops. */ - -static int -get_mri_string (idx, in, val, terminator) - int idx; - sb *in; - sb *val; - int terminator; -{ - idx = sb_skip_white (idx, in); - - if (idx < in->len - && in->ptr[idx] == '\'') - { - sb_add_char (val, '\''); - for (++idx; idx < in->len; ++idx) - { - sb_add_char (val, in->ptr[idx]); - if (in->ptr[idx] == '\'') - { - ++idx; - if (idx >= in->len - || in->ptr[idx] != '\'') - break; - } - } - idx = sb_skip_white (idx, in); - } - else - { - int i; - - while (idx < in->len - && in->ptr[idx] != terminator) - { - sb_add_char (val, in->ptr[idx]); - ++idx; - } - i = val->len - 1; - while (i >= 0 && ISWHITE (val->ptr[i])) - --i; - val->len = i + 1; - } - - return idx; -} - -/* MRI IFC, IFNC. */ - -static void -do_ifc (idx, in, ifnc) - int idx; - sb *in; - int ifnc; -{ - sb first; - sb second; - int res; - - if (ifi >= IFNESTING) - { - FATAL ((stderr, _("IF nesting unreasonable.\n"))); - } - - sb_new (&first); - sb_new (&second); - - idx = get_mri_string (idx, in, &first, ','); - - if (idx >= in->len || in->ptr[idx] != ',') - { - ERROR ((stderr, _("Bad format for IF or IFNC.\n"))); - return; - } - - idx = get_mri_string (idx + 1, in, &second, ';'); - - res = (first.len == second.len - && strncmp (first.ptr, second.ptr, first.len) == 0); - res ^= ifnc; - - ifi++; - ifstack[ifi].on = ifstack[ifi-1].on ? res : 0; - ifstack[ifi].hadelse = 0; -} - -/* .ENDR */ -static void -do_aendr () -{ - if (!mri) - ERROR ((stderr, _("AENDR without a AREPEAT.\n"))); - else - ERROR ((stderr, _("ENDR without a REPT.\n"))); -} - -/* .AWHILE */ - -static -void -do_awhile (idx, in) - int idx; - sb *in; -{ - int line = linecount (); - sb exp; - sb sub; - int doit; - - sb_new (&sub); - sb_new (&exp); - - process_assigns (idx, in, &exp); - doit = istrue (0, &exp); - - if (! buffer_and_nest ("AWHILE", "AENDW", &sub, get_line)) - FATAL ((stderr, _("AWHILE without a AENDW at %d.\n"), line - 1)); - - /* Turn - .AWHILE exp - foo - .AENDW - into - foo - .AWHILE exp - foo - .ENDW - */ - - if (doit) - { - int index = include_next_index (); - - sb copy; - sb_new (©); - sb_add_sb (©, &sub); - sb_add_sb (©, in); - sb_add_string (©, "\n"); - sb_add_sb (©, &sub); - sb_add_string (©, "\t.AENDW\n"); - /* Push another WHILE */ - include_buf (&exp, ©, include_while, index); - sb_kill (©); - } - sb_kill (&exp); - sb_kill (&sub); -} - - -/* .AENDW */ - -static void -do_aendw () -{ - ERROR ((stderr, _("AENDW without a AENDW.\n"))); -} - - -/* .EXITM - - Pop things off the include stack until the type and index changes */ - -static void -do_exitm () -{ - include_type type = sp->type; - if (type == include_repeat - || type == include_while - || type == include_macro) - { - int index = sp->index; - include_pop (); - while (sp->index == index - && sp->type == type) - { - include_pop (); - } - } -} - -/* .AREPEAT */ - -static void -do_arepeat (idx, in) - int idx; - sb *in; -{ - int line = linecount (); - sb exp; /* buffer with expression in it */ - sb copy; /* expanded repeat block */ - sb sub; /* contents of AREPEAT */ - int rc; - int ret; - char buffer[30]; - - sb_new (&exp); - sb_new (©); - sb_new (&sub); - process_assigns (idx, in, &exp); - idx = exp_get_abs (_("AREPEAT must have absolute operand.\n"), 0, &exp, &rc); - if (!mri) - ret = buffer_and_nest ("AREPEAT", "AENDR", &sub, get_line); - else - ret = buffer_and_nest ("REPT", "ENDR", &sub, get_line); - if (! ret) - FATAL ((stderr, _("AREPEAT without a AENDR at %d.\n"), line - 1)); - if (rc > 0) - { - /* Push back the text following the repeat, and another repeat block - so - .AREPEAT 20 - foo - .AENDR - gets turned into - foo - .AREPEAT 19 - foo - .AENDR - */ - int index = include_next_index (); - sb_add_sb (©, &sub); - if (rc > 1) - { - if (!mri) - sprintf (buffer, "\t.AREPEAT %d\n", rc - 1); - else - sprintf (buffer, "\tREPT %d\n", rc - 1); - sb_add_string (©, buffer); - sb_add_sb (©, &sub); - if (!mri) - sb_add_string (©, " .AENDR\n"); - else - sb_add_string (©, " ENDR\n"); - } - - include_buf (&exp, ©, include_repeat, index); - } - sb_kill (&exp); - sb_kill (&sub); - sb_kill (©); -} - -/* .ENDM */ - -static void -do_endm () -{ - ERROR ((stderr, _(".ENDM without a matching .MACRO.\n"))); -} - -/* MRI IRP pseudo-op. */ - -static void -do_irp (idx, in, irpc) - int idx; - sb *in; - int irpc; -{ - const char *err; - sb out; - - sb_new (&out); - - err = expand_irp (irpc, idx, in, &out, get_line, comment_char); - if (err != NULL) - ERROR ((stderr, "%s\n", err)); - - fprintf (outfile, "%s", sb_terminate (&out)); - - sb_kill (&out); -} - -/* MACRO PROCESSING */ - -/* Parse off LOCAL n1, n2,... Invent a label name for it */ -static -void -do_local (idx, line) - int idx; - sb *line; -{ - ERROR ((stderr, _("LOCAL outside of MACRO"))); -} - -static void -do_macro (idx, in) - int idx; - sb *in; -{ - const char *err; - int line = linecount (); - - err = define_macro (idx, in, &label, get_line, (const char **) NULL); - if (err != NULL) - ERROR ((stderr, _("macro at line %d: %s\n"), line - 1, err)); -} - -static int -macro_op (idx, in) - int idx; - sb *in; -{ - const char *err; - sb out; - sb name; - - if (! macro_defined) - return 0; - - sb_terminate (in); - if (! check_macro (in->ptr + idx, &out, comment_char, &err)) - return 0; - - if (err != NULL) - ERROR ((stderr, "%s\n", err)); - - sb_new (&name); - sb_add_string (&name, _("macro expansion")); - - include_buf (&name, &out, include_macro, include_next_index ()); - - sb_kill (&name); - sb_kill (&out); - - return 1; -} - -/* STRING HANDLING */ - -static int -getstring (idx, in, acc) - int idx; - sb *in; - sb *acc; -{ - idx = sb_skip_white (idx, in); - - while (idx < in->len - && (in->ptr[idx] == '"' - || in->ptr[idx] == '<' - || (in->ptr[idx] == '\'' && alternate))) - { - if (in->ptr[idx] == '<') - { - if (alternate || mri) - { - int nest = 0; - idx++; - while ((in->ptr[idx] != '>' || nest) - && idx < in->len) - { - if (in->ptr[idx] == '!') - { - idx++ ; - sb_add_char (acc, in->ptr[idx++]); - } - else { - if (in->ptr[idx] == '>') - nest--; - if (in->ptr[idx] == '<') - nest++; - sb_add_char (acc, in->ptr[idx++]); - } - } - idx++; - } - else { - int code; - idx++; - idx = exp_get_abs (_("Character code in string must be absolute expression.\n"), - idx, in, &code); - sb_add_char (acc, code); - - if (in->ptr[idx] != '>') - ERROR ((stderr, _("Missing > for character code.\n"))); - idx++; - } - } - else if (in->ptr[idx] == '"' || in->ptr[idx] == '\'') - { - char tchar = in->ptr[idx]; - idx++; - while (idx < in->len) - { - if (alternate && in->ptr[idx] == '!') - { - idx++ ; - sb_add_char (acc, in->ptr[idx++]); - } - else { - if (in->ptr[idx] == tchar) - { - idx++; - if (idx >= in->len || in->ptr[idx] != tchar) - break; - } - sb_add_char (acc, in->ptr[idx]); - idx++; - } - } - } - } - - return idx; -} - -/* .SDATA[C|Z] <string> */ - -static -void -do_sdata (idx, in, type) - int idx; - sb *in; - int type; -{ - int nc = 0; - int pidx = -1; - sb acc; - sb_new (&acc); - fprintf (outfile, ".byte\t"); - - while (!eol (idx, in)) - { - int i; - sb_reset (&acc); - idx = sb_skip_white (idx, in); - while (!eol (idx, in)) - { - pidx = idx = get_any_string (idx, in, &acc, 0, 1); - if (type == 'c') - { - if (acc.len > 255) - { - ERROR ((stderr, _("string for SDATAC longer than 255 characters (%d).\n"), acc.len)); - } - fprintf (outfile, "%d", acc.len); - nc = 1; - } - - for (i = 0; i < acc.len; i++) - { - if (nc) - { - fprintf (outfile, ","); - } - fprintf (outfile, "%d", acc.ptr[i]); - nc = 1; - } - - if (type == 'z') - { - if (nc) - fprintf (outfile, ","); - fprintf (outfile, "0"); - } - idx = sb_skip_comma (idx, in); - if (idx == pidx) break; - } - if (!alternate && in->ptr[idx] != ',' && idx != in->len) - { - fprintf (outfile, "\n"); - ERROR ((stderr, _("illegal character in SDATA line (0x%x).\n"), in->ptr[idx])); - break; - } - idx++; - } - sb_kill (&acc); - fprintf (outfile, "\n"); -} - -/* .SDATAB <count> <string> */ - -static void -do_sdatab (idx, in) - int idx; - sb *in; -{ - int repeat; - int i; - sb acc; - sb_new (&acc); - - idx = exp_get_abs (_("Must have absolute SDATAB repeat count.\n"), idx, in, &repeat); - if (repeat <= 0) - { - ERROR ((stderr, _("Must have positive SDATAB repeat count (%d).\n"), repeat)); - repeat = 1; - } - - idx = sb_skip_comma (idx, in); - idx = getstring (idx, in, &acc); - - for (i = 0; i < repeat; i++) - { - if (i) - fprintf (outfile, "\t"); - fprintf (outfile, ".byte\t"); - sb_print (outfile, &acc); - fprintf (outfile, "\n"); - } - sb_kill (&acc); - -} - -static int -new_file (name) - const char *name; -{ - FILE *newone = fopen (name, "r"); - if (!newone) - return 0; - - if (isp == MAX_INCLUDES) - FATAL ((stderr, _("Unreasonable include depth (%ld).\n"), (long) isp)); - - sp++; - sp->handle = newone; - - sb_new (&sp->name); - sb_add_string (&sp->name, name); - - sp->linecount = 1; - sp->pushback_index = 0; - sp->type = include_file; - sp->index = 0; - sb_new (&sp->pushback); - return 1; -} - -static void -do_include (idx, in) - int idx; - sb *in; -{ - sb t; - sb cat; - include_path *includes; - - sb_new (&t); - sb_new (&cat); - - if (! mri) - idx = getstring (idx, in, &t); - else - { - idx = sb_skip_white (idx, in); - while (idx < in->len && ! ISWHITE (in->ptr[idx])) - { - sb_add_char (&t, in->ptr[idx]); - ++idx; - } - } - - for (includes = paths_head; includes; includes = includes->next) - { - sb_reset (&cat); - sb_add_sb (&cat, &includes->path); - sb_add_char (&cat, '/'); - sb_add_sb (&cat, &t); - if (new_file (sb_name (&cat))) - { - break; - } - } - if (!includes) - { - if (! new_file (sb_name (&t))) - FATAL ((stderr, _("Can't open include file `%s'.\n"), sb_name (&t))); - } - sb_kill (&cat); - sb_kill (&t); -} - -static void -include_pop () -{ - if (sp != include_stack) - { - if (sp->handle) - fclose (sp->handle); - sp--; - } -} - -/* Get the next character from the include stack. If there's anything - in the pushback buffer, take that first. If we're at eof, pop from - the stack and try again. Keep the linecount up to date. */ - -static int -get () -{ - int r; - - if (sp->pushback.len != sp->pushback_index) - { - r = (char) (sp->pushback.ptr[sp->pushback_index++]); - /* When they've all gone, reset the pointer */ - if (sp->pushback_index == sp->pushback.len) - { - sp->pushback.len = 0; - sp->pushback_index = 0; - } - } - else if (sp->handle) - { - r = getc (sp->handle); - } - else - r = EOF; - - if (r == EOF && isp) - { - include_pop (); - r = get (); - while (r == EOF && isp) - { - include_pop (); - r = get (); - } - return r; - } - if (r == '\n') - { - sp->linecount++; - } - - return r; -} - -static int -linecount () -{ - return sp->linecount; -} - -static int -include_next_index () -{ - static int index; - if (!unreasonable - && index > MAX_REASONABLE) - FATAL ((stderr, _("Unreasonable expansion (-u turns off check).\n"))); - return ++index; -} - - -/* Initialize the chartype vector. */ - -static void -chartype_init () -{ - int x; - for (x = 0; x < 256; x++) - { - if (isalpha (x) || x == '_' || x == '$') - chartype[x] |= FIRSTBIT; - - if (mri && x == '.') - chartype[x] |= FIRSTBIT; - - if (isdigit (x) || isalpha (x) || x == '_' || x == '$') - chartype[x] |= NEXTBIT; - - if (x == ' ' || x == '\t' || x == ',' || x == '"' || x == ';' - || x == '"' || x == '<' || x == '>' || x == ')' || x == '(') - chartype[x] |= SEPBIT; - - if (x == 'b' || x == 'B' - || x == 'q' || x == 'Q' - || x == 'h' || x == 'H' - || x == 'd' || x == 'D') - chartype [x] |= BASEBIT; - - if (x == ' ' || x == '\t') - chartype[x] |= WHITEBIT; - - if (x == comment_char) - chartype[x] |= COMMENTBIT; - } -} - - - -/* What to do with all the keywords */ -#define PROCESS 0x1000 /* Run substitution over the line */ -#define LAB 0x2000 /* Spit out the label */ - -#define K_EQU (PROCESS|1) -#define K_ASSIGN (PROCESS|2) -#define K_REG (PROCESS|3) -#define K_ORG (PROCESS|4) -#define K_RADIX (PROCESS|5) -#define K_DATA (LAB|PROCESS|6) -#define K_DATAB (LAB|PROCESS|7) -#define K_SDATA (LAB|PROCESS|8) -#define K_SDATAB (LAB|PROCESS|9) -#define K_SDATAC (LAB|PROCESS|10) -#define K_SDATAZ (LAB|PROCESS|11) -#define K_RES (LAB|PROCESS|12) -#define K_SRES (LAB|PROCESS|13) -#define K_SRESC (LAB|PROCESS|14) -#define K_SRESZ (LAB|PROCESS|15) -#define K_EXPORT (LAB|PROCESS|16) -#define K_GLOBAL (LAB|PROCESS|17) -#define K_PRINT (LAB|PROCESS|19) -#define K_FORM (LAB|PROCESS|20) -#define K_HEADING (LAB|PROCESS|21) -#define K_PAGE (LAB|PROCESS|22) -#define K_IMPORT (LAB|PROCESS|23) -#define K_PROGRAM (LAB|PROCESS|24) -#define K_END (PROCESS|25) -#define K_INCLUDE (PROCESS|26) -#define K_IGNORED (PROCESS|27) -#define K_ASSIGNA (PROCESS|28) -#define K_ASSIGNC (29) -#define K_AIF (PROCESS|30) -#define K_AELSE (PROCESS|31) -#define K_AENDI (PROCESS|32) -#define K_AREPEAT (PROCESS|33) -#define K_AENDR (PROCESS|34) -#define K_AWHILE (35) -#define K_AENDW (PROCESS|36) -#define K_EXITM (37) -#define K_MACRO (PROCESS|38) -#define K_ENDM (39) -#define K_ALIGN (PROCESS|LAB|40) -#define K_ALTERNATE (41) -#define K_DB (LAB|PROCESS|42) -#define K_DW (LAB|PROCESS|43) -#define K_DL (LAB|PROCESS|44) -#define K_LOCAL (45) -#define K_IFEQ (PROCESS|46) -#define K_IFNE (PROCESS|47) -#define K_IFLT (PROCESS|48) -#define K_IFLE (PROCESS|49) -#define K_IFGE (PROCESS|50) -#define K_IFGT (PROCESS|51) -#define K_IFC (PROCESS|52) -#define K_IFNC (PROCESS|53) -#define K_IRP (PROCESS|54) -#define K_IRPC (PROCESS|55) - - -struct keyword -{ - char *name; - int code; - int extra; -}; - -static struct keyword kinfo[] = -{ - { "EQU", K_EQU, 0 }, - { "ALTERNATE", K_ALTERNATE, 0 }, - { "ASSIGN", K_ASSIGN, 0 }, - { "REG", K_REG, 0 }, - { "ORG", K_ORG, 0 }, - { "RADIX", K_RADIX, 0 }, - { "DATA", K_DATA, 0 }, - { "DB", K_DB, 0 }, - { "DW", K_DW, 0 }, - { "DL", K_DL, 0 }, - { "DATAB", K_DATAB, 0 }, - { "SDATA", K_SDATA, 0 }, - { "SDATAB", K_SDATAB, 0 }, - { "SDATAZ", K_SDATAZ, 0 }, - { "SDATAC", K_SDATAC, 0 }, - { "RES", K_RES, 0 }, - { "SRES", K_SRES, 0 }, - { "SRESC", K_SRESC, 0 }, - { "SRESZ", K_SRESZ, 0 }, - { "EXPORT", K_EXPORT, 0 }, - { "GLOBAL", K_GLOBAL, 0 }, - { "PRINT", K_PRINT, 0 }, - { "FORM", K_FORM, 0 }, - { "HEADING", K_HEADING, 0 }, - { "PAGE", K_PAGE, 0 }, - { "PROGRAM", K_IGNORED, 0 }, - { "END", K_END, 0 }, - { "INCLUDE", K_INCLUDE, 0 }, - { "ASSIGNA", K_ASSIGNA, 0 }, - { "ASSIGNC", K_ASSIGNC, 0 }, - { "AIF", K_AIF, 0 }, - { "AELSE", K_AELSE, 0 }, - { "AENDI", K_AENDI, 0 }, - { "AREPEAT", K_AREPEAT, 0 }, - { "AENDR", K_AENDR, 0 }, - { "EXITM", K_EXITM, 0 }, - { "MACRO", K_MACRO, 0 }, - { "ENDM", K_ENDM, 0 }, - { "AWHILE", K_AWHILE, 0 }, - { "ALIGN", K_ALIGN, 0 }, - { "AENDW", K_AENDW, 0 }, - { "ALTERNATE", K_ALTERNATE, 0 }, - { "LOCAL", K_LOCAL, 0 }, - { NULL, 0, 0 } -}; - -/* Although the conditional operators are handled by gas, we need to - handle them here as well, in case they are used in a recursive - macro to end the recursion. */ - -static struct keyword mrikinfo[] = -{ - { "IFEQ", K_IFEQ, 0 }, - { "IFNE", K_IFNE, 0 }, - { "IFLT", K_IFLT, 0 }, - { "IFLE", K_IFLE, 0 }, - { "IFGE", K_IFGE, 0 }, - { "IFGT", K_IFGT, 0 }, - { "IFC", K_IFC, 0 }, - { "IFNC", K_IFNC, 0 }, - { "ELSEC", K_AELSE, 0 }, - { "ENDC", K_AENDI, 0 }, - { "MEXIT", K_EXITM, 0 }, - { "REPT", K_AREPEAT, 0 }, - { "IRP", K_IRP, 0 }, - { "IRPC", K_IRPC, 0 }, - { "ENDR", K_AENDR, 0 }, - { NULL, 0, 0 } -}; - -/* Look for a pseudo op on the line. If one's there then call - its handler. */ - -static int -process_pseudo_op (idx, line, acc) - int idx; - sb *line; - sb *acc; -{ - int oidx = idx; - - if (line->ptr[idx] == '.' || alternate || mri) - { - /* Scan forward and find pseudo name */ - char *in; - hash_entry *ptr; - - char *s; - char *e; - if (line->ptr[idx] == '.') - idx++; - in = line->ptr + idx; - s = in; - e = s; - sb_reset (acc); - - while (idx < line->len && *e && ISFIRSTCHAR (*e)) - { - sb_add_char (acc, *e); - e++; - idx++; - } - - ptr = hash_lookup (&keyword_hash_table, acc); - - if (!ptr) - { -#if 0 - /* This one causes lots of pain when trying to preprocess - ordinary code */ - WARNING ((stderr, _("Unrecognised pseudo op `%s'.\n"), sb_name (acc))); -#endif - return 0; - } - if (ptr->value.i & LAB) - { /* output the label */ - if (label.len) - { - fprintf (outfile, "%s:\t", sb_name (&label)); - } - else - fprintf (outfile, "\t"); - } - - if (mri && ptr->value.i == K_END) - { - sb t; - - sb_new (&t); - sb_add_buffer (&t, line->ptr + oidx, idx - oidx); - fprintf (outfile, "\t%s", sb_name (&t)); - sb_kill (&t); - } - - if (ptr->value.i & PROCESS) - { - /* Polish the rest of the line before handling the pseudo op */ -#if 0 - strip_comments(line); -#endif - sb_reset (acc); - process_assigns (idx, line, acc); - sb_reset(line); - change_base (0, acc, line); - idx = 0; - } - if (!condass_on ()) - { - switch (ptr->value.i) - { - case K_AIF: - do_aif (idx, line); - break; - case K_AELSE: - do_aelse (); - break; - case K_AENDI: - do_aendi (); - break; - } - return 1; - } - else - { - switch (ptr->value.i) - { - case K_ALTERNATE: - alternate = 1; - macro_init (1, mri, 0, exp_get_abs); - return 1; - case K_AELSE: - do_aelse (); - return 1; - case K_AENDI: - do_aendi (); - return 1; - case K_ORG: - ERROR ((stderr, _("ORG command not allowed.\n"))); - break; - case K_RADIX: - do_radix (line); - return 1; - case K_DB: - do_data (idx, line, 1); - return 1; - case K_DW: - do_data (idx, line, 2); - return 1; - case K_DL: - do_data (idx, line, 4); - return 1; - case K_DATA: - do_data (idx, line, 0); - return 1; - case K_DATAB: - do_datab (idx, line); - return 1; - case K_SDATA: - do_sdata (idx, line, 0); - return 1; - case K_SDATAB: - do_sdatab (idx, line); - return 1; - case K_SDATAC: - do_sdata (idx, line, 'c'); - return 1; - case K_SDATAZ: - do_sdata (idx, line, 'z'); - return 1; - case K_ASSIGN: - do_assign (0, 0, line); - return 1; - case K_AIF: - do_aif (idx, line); - return 1; - case K_AREPEAT: - do_arepeat (idx, line); - return 1; - case K_AENDW: - do_aendw (); - return 1; - case K_AWHILE: - do_awhile (idx, line); - return 1; - case K_AENDR: - do_aendr (); - return 1; - case K_EQU: - do_assign (1, idx, line); - return 1; - case K_ALIGN: - do_align (idx, line); - return 1; - case K_RES: - do_res (idx, line, 0); - return 1; - case K_SRES: - do_res (idx, line, 's'); - return 1; - case K_INCLUDE: - do_include (idx, line); - return 1; - case K_LOCAL: - do_local (idx, line); - return 1; - case K_MACRO: - do_macro (idx, line); - return 1; - case K_ENDM: - do_endm (); - return 1; - case K_SRESC: - do_res (idx, line, 'c'); - return 1; - case K_PRINT: - do_print (idx, line); - return 1; - case K_FORM: - do_form (idx, line); - return 1; - case K_HEADING: - do_heading (idx, line); - return 1; - case K_PAGE: - do_page (); - return 1; - case K_GLOBAL: - case K_EXPORT: - do_export (line); - return 1; - case K_IMPORT: - return 1; - case K_SRESZ: - do_res (idx, line, 'z'); - return 1; - case K_IGNORED: - return 1; - case K_END: - do_end (line); - return 1; - case K_ASSIGNA: - do_assigna (idx, line); - return 1; - case K_ASSIGNC: - do_assignc (idx, line); - return 1; - case K_EXITM: - do_exitm (); - return 1; - case K_REG: - do_reg (idx, line); - return 1; - case K_IFEQ: - do_if (idx, line, EQ); - return 1; - case K_IFNE: - do_if (idx, line, NE); - return 1; - case K_IFLT: - do_if (idx, line, LT); - return 1; - case K_IFLE: - do_if (idx, line, LE); - return 1; - case K_IFGE: - do_if (idx, line, GE); - return 1; - case K_IFGT: - do_if (idx, line, GT); - return 1; - case K_IFC: - do_ifc (idx, line, 0); - return 1; - case K_IFNC: - do_ifc (idx, line, 1); - return 1; - case K_IRP: - do_irp (idx, line, 0); - return 1; - case K_IRPC: - do_irp (idx, line, 1); - return 1; - } - } - } - return 0; -} - - - -/* Add a keyword to the hash table. */ - -static void -add_keyword (name, code) - const char *name; - int code; -{ - sb label; - int j; - - sb_new (&label); - sb_add_string (&label, name); - - hash_add_to_int_table (&keyword_hash_table, &label, code); - - sb_reset (&label); - for (j = 0; name[j]; j++) - sb_add_char (&label, name[j] - 'A' + 'a'); - hash_add_to_int_table (&keyword_hash_table, &label, code); - - sb_kill (&label); -} - -/* Build the keyword hash table - put each keyword in the table twice, - once upper and once lower case.*/ - -static void -process_init () -{ - int i; - - for (i = 0; kinfo[i].name; i++) - add_keyword (kinfo[i].name, kinfo[i].code); - - if (mri) - { - for (i = 0; mrikinfo[i].name; i++) - add_keyword (mrikinfo[i].name, mrikinfo[i].code); - } -} - - -static void -do_define (string) - const char *string; -{ - sb label; - int res = 1; - hash_entry *ptr; - sb_new (&label); - - - while (*string) - { - if (*string == '=') - { - sb value; - sb_new (&value); - string++; - while (*string) - { - sb_add_char (&value, *string); - string++; - } - exp_get_abs (_("Invalid expression on command line.\n"), 0, &value, &res); - sb_kill (&value); - break; - } - sb_add_char (&label, *string); - - string ++; - } - - ptr = hash_create (&vars, &label); - free_old_entry (ptr); - ptr->type = hash_integer; - ptr->value.i = res; - sb_kill (&label); -} -char *program_name; - -/* The list of long options. */ -static struct option long_options[] = -{ - { "alternate", no_argument, 0, 'a' }, - { "include", required_argument, 0, 'I' }, - { "commentchar", required_argument, 0, 'c' }, - { "copysource", no_argument, 0, 's' }, - { "debug", no_argument, 0, 'd' }, - { "help", no_argument, 0, 'h' }, - { "mri", no_argument, 0, 'M' }, - { "output", required_argument, 0, 'o' }, - { "print", no_argument, 0, 'p' }, - { "unreasonable", no_argument, 0, 'u' }, - { "version", no_argument, 0, 'v' }, - { "define", required_argument, 0, 'd' }, - { NULL, no_argument, 0, 0 } -}; - -/* Show a usage message and exit. */ -static void -show_usage (file, status) - FILE *file; - int status; -{ - fprintf (file, _("\ -Usage: %s \n\ - [-a] [--alternate] enter alternate macro mode\n\ - [-c char] [--commentchar char] change the comment character from !\n\ - [-d] [--debug] print some debugging info\n\ - [-h] [--help] print this message\n\ - [-M] [--mri] enter MRI compatibility mode\n\ - [-o out] [--output out] set the output file\n\ - [-p] [--print] print line numbers\n"), program_name); - fprintf (file, _("\ - [-s] [--copysource] copy source through as comments \n\ - [-u] [--unreasonable] allow unreasonable nesting\n\ - [-v] [--version] print the program version\n\ - [-Dname=value] create preprocessor variable called name, with value\n\ - [-Ipath] add to include path list\n\ - [in-file]\n")); - if (status == 0) - printf (_("\nReport bugs to bug-gnu-utils@gnu.org\n")); - exit (status); -} - -/* Display a help message and exit. */ -static void -show_help () -{ - printf (_("%s: Gnu Assembler Macro Preprocessor\n"), - program_name); - show_usage (stdout, 0); -} - -int -main (argc, argv) - int argc; - char **argv; -{ - int opt; - char *out_name = 0; - sp = include_stack; - - ifstack[0].on = 1; - ifi = 0; - -#if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES) - setlocale (LC_MESSAGES, ""); -#endif - bindtextdomain (PACKAGE, LOCALEDIR); - textdomain (PACKAGE); - - program_name = argv[0]; - xmalloc_set_program_name (program_name); - - hash_new_table (101, &keyword_hash_table); - hash_new_table (101, &assign_hash_table); - hash_new_table (101, &vars); - - sb_new (&label); - - while ((opt = getopt_long (argc, argv, "I:sdhavc:upo:D:M", long_options, - (int *) NULL)) - != EOF) - { - switch (opt) - { - case 'o': - out_name = optarg; - break; - case 'u': - unreasonable = 1; - break; - case 'I': - { - include_path *p = (include_path *) xmalloc (sizeof (include_path)); - p->next = NULL; - sb_new (&p->path); - sb_add_string (&p->path, optarg); - if (paths_tail) - paths_tail->next = p; - else - paths_head = p; - paths_tail = p; - } - break; - case 'p': - print_line_number = 1; - break; - case 'c': - comment_char = optarg[0]; - break; - case 'a': - alternate = 1; - break; - case 's': - copysource = 1; - break; - case 'd': - stats = 1; - break; - case 'D': - do_define (optarg); - break; - case 'M': - mri = 1; - comment_char = ';'; - break; - case 'h': - show_help (); - /*NOTREACHED*/ - case 'v': - /* This output is intended to follow the GNU standards document. */ - printf (_("GNU assembler pre-processor %s\n"), program_version); - printf (_("Copyright 1996 Free Software Foundation, Inc.\n")); - printf (_("\ -This program is free software; you may redistribute it under the terms of\n\ -the GNU General Public License. This program has absolutely no warranty.\n")); - exit (0); - /*NOTREACHED*/ - case 0: - break; - default: - show_usage (stderr, 1); - /*NOTREACHED*/ - } - } - - process_init (); - - macro_init (alternate, mri, 0, exp_get_abs); - - if (out_name) { - outfile = fopen (out_name, "w"); - if (!outfile) - { - fprintf (stderr, _("%s: Can't open output file `%s'.\n"), - program_name, out_name); - exit (1); - } - } - else { - outfile = stdout; - } - - chartype_init (); - if (!outfile) - outfile = stdout; - - /* Process all the input files */ - - while (optind < argc) - { - if (new_file (argv[optind])) - { - process_file (); - } - else - { - fprintf (stderr, _("%s: Can't open input file `%s'.\n"), - program_name, argv[optind]); - exit (1); - } - optind++; - } - - quit (); - return 0; -} - -/* This function is used because an abort in some of the other files - may be compiled into as_abort because they include as.h. */ - -void -as_abort (file, line, fn) - const char *file, *fn; - int line; -{ - fprintf (stderr, _("Internal error, aborting at %s line %d"), file, line); - if (fn) - fprintf (stderr, " in %s", fn); - fprintf (stderr, _("\nPlease report this bug.\n")); - exit (1); -} |