From: Ken Raeburn Date: Mon, 28 Dec 1992 18:37:21 +0000 (+0000) Subject: handle local label number zero -- 0f, 0b, 0$ -- correctly X-Git-Tag: gdb-4_18~20469 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=2ed83a5973d1bc56c0c01c3252c6ed6743652315;p=platform%2Fupstream%2Fbinutils.git handle local label number zero -- 0f, 0b, 0$ -- correctly --- diff --git a/gas/expr.c b/gas/expr.c index e0bc5c2..fa67fa3 100644 --- a/gas/expr.c +++ b/gas/expr.c @@ -1,18 +1,18 @@ /* expr.c -operands, expressions- Copyright (C) 1987, 1990, 1991, 1992 Free Software Foundation, Inc. - + This file is part of GAS, the GNU Assembler. - + GAS 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. - + GAS 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 GAS; see the file COPYING. If not, write to the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ @@ -32,9 +32,9 @@ #include "obstack.h" #if __STDC__ == 1 -static void clean_up_expression(expressionS *expressionP); +static void clean_up_expression (expressionS * expressionP); #else /* __STDC__ */ -static void clean_up_expression(); /* Internal. */ +static void clean_up_expression (); /* Internal. */ #endif /* not __STDC__ */ extern const char EXP_CHARS[]; /* JF hide MD floating pt stuff all the same place */ extern const char FLT_CHARS[]; @@ -44,73 +44,72 @@ extern const char FLT_CHARS[]; * Also build any bignum literal here. */ -/* LITTLENUM_TYPE generic_buffer [6]; */ /* JF this is a hack */ +/* LITTLENUM_TYPE generic_buffer [6]; *//* JF this is a hack */ /* Seems atof_machine can backscan through generic_bignum and hit whatever happens to be loaded before it in memory. And its way too complicated for me to fix right. Thus a hack. JF: Just make generic_bignum bigger, and never write into the early words, thus they'll always be zero. I hate Dean's floating-point code. Bleh. */ -LITTLENUM_TYPE generic_bignum [SIZE_OF_LARGE_NUMBER+6]; -FLONUM_TYPE generic_floating_point_number = +LITTLENUM_TYPE generic_bignum[SIZE_OF_LARGE_NUMBER + 6]; +FLONUM_TYPE generic_floating_point_number = { - & generic_bignum [6], /* low (JF: Was 0) */ - & generic_bignum [SIZE_OF_LARGE_NUMBER+6 - 1], /* high JF: (added +6) */ - 0, /* leader */ - 0, /* exponent */ - 0 /* sign */ - }; + &generic_bignum[6], /* low (JF: Was 0) */ + &generic_bignum[SIZE_OF_LARGE_NUMBER + 6 - 1], /* high JF: (added +6) */ + 0, /* leader */ + 0, /* exponent */ + 0 /* sign */ +}; /* If nonzero, we've been asked to assemble nan, +inf or -inf */ int generic_floating_point_magic; -floating_constant(expressionP) -expressionS *expressionP; +floating_constant (expressionP) + expressionS *expressionP; { /* input_line_pointer->*/ /* floating-point constant. */ int error_code; error_code = atof_generic - (& input_line_pointer, ".", EXP_CHARS, - & generic_floating_point_number); + (&input_line_pointer, ".", EXP_CHARS, + &generic_floating_point_number); if (error_code) - { - if (error_code == ERROR_EXPONENT_OVERFLOW) { - as_bad("bad floating-point constant: exponent overflow, probably assembling junk"); - } - else - { - as_bad("bad floating-point constant: unknown error code=%d.", error_code); + if (error_code == ERROR_EXPONENT_OVERFLOW) + { + as_bad ("bad floating-point constant: exponent overflow, probably assembling junk"); + } + else + { + as_bad ("bad floating-point constant: unknown error code=%d.", error_code); + } } - } expressionP->X_seg = SEG_BIG; /* input_line_pointer->just after constant, */ /* which may point to whitespace. */ - expressionP->X_add_number =-1; - + expressionP->X_add_number = -1; } -integer_constant(radix, expressionP) -int radix; -expressionS *expressionP; +integer_constant (radix, expressionP) + int radix; + expressionS *expressionP; { - register char * digit_2; /*->2nd digit of number. */ + register char *digit_2; /*->2nd digit of number. */ char c; - - register valueT number; /* offset or (absolute) value */ - register short int digit; /* value of next digit in current radix */ - register short int maxdig = 0; /* highest permitted digit value. */ - register int too_many_digits = 0; /* if we see >= this number of */ - register char *name; /* points to name of symbol */ - register symbolS * symbolP; /* points to symbol */ - - int small; /* true if fits in 32 bits. */ - extern char hex_value[]; /* in hex_value.c */ - + + register valueT number; /* offset or (absolute) value */ + register short int digit; /* value of next digit in current radix */ + register short int maxdig = 0;/* highest permitted digit value. */ + register int too_many_digits = 0; /* if we see >= this number of */ + register char *name; /* points to name of symbol */ + register symbolS *symbolP; /* points to symbol */ + + int small; /* true if fits in 32 bits. */ + extern char hex_value[]; /* in hex_value.c */ + /* may be bignum, or may fit in 32 bits. */ /* * most numbers fit into 32 bits, and we want this case to be fast. @@ -127,10 +126,10 @@ expressionS *expressionP; * if it fits into 32 bits as an unsigned number, we let it be a 32-bit * number. the cavalier approach is for speed in ordinary cases. */ - - switch (radix) + + switch (radix) { - + case 2: maxdig = 2; too_many_digits = 33; @@ -140,8 +139,8 @@ expressionS *expressionP; too_many_digits = 11; break; case 16: - - + + maxdig = radix = 16; too_many_digits = 9; break; @@ -152,174 +151,188 @@ expressionS *expressionP; c = *input_line_pointer; input_line_pointer++; digit_2 = input_line_pointer; - for (number=0; (digit=hex_value[c])char after c. */ small = input_line_pointer - digit_2 < too_many_digits; - if (! small) + if (!small) { /* * we saw a lot of digits. manufacture a bignum the hard way. */ - LITTLENUM_TYPE * leader; /*->high order littlenum of the bignum. */ - LITTLENUM_TYPE * pointer; /*->littlenum we are frobbing now. */ + LITTLENUM_TYPE *leader; /*->high order littlenum of the bignum. */ + LITTLENUM_TYPE *pointer; /*->littlenum we are frobbing now. */ long carry; - + leader = generic_bignum; - generic_bignum [0] = 0; - generic_bignum [1] = 0; + generic_bignum[0] = 0; + generic_bignum[1] = 0; /* we could just use digit_2, but lets be mnemonic. */ - input_line_pointer = --digit_2; /*->1st digit. */ + input_line_pointer = --digit_2; /*->1st digit. */ c = *input_line_pointer++; - for (; (carry = hex_value[c]) < maxdig; c = *input_line_pointer++) + for (; (carry = hex_value[c]) < maxdig; c = *input_line_pointer++) { for (pointer = generic_bignum; pointer <= leader; pointer++) { long work; - - work = carry + radix * * pointer; + + work = carry + radix * *pointer; *pointer = work & LITTLENUM_MASK; carry = work >> LITTLENUM_NUMBER_OF_BITS; } if (carry) { if (leader < generic_bignum + SIZE_OF_LARGE_NUMBER - 1) - { /* room to grow a longer bignum. */ + { /* room to grow a longer bignum. */ *++leader = carry; } } } /* again, c is char after number, */ /* input_line_pointer->after c. */ - know(sizeof (int) * 8 == 32); - know(LITTLENUM_NUMBER_OF_BITS == 16); + know (sizeof (int) * 8 == 32); + know (LITTLENUM_NUMBER_OF_BITS == 16); /* hence the constant "2" in the next line. */ if (leader < generic_bignum + 2) - { /* will fit into 32 bits. */ + { /* will fit into 32 bits. */ number = - ((generic_bignum [1] & LITTLENUM_MASK) << LITTLENUM_NUMBER_OF_BITS) - | (generic_bignum [0] & LITTLENUM_MASK); + ((generic_bignum[1] & LITTLENUM_MASK) << LITTLENUM_NUMBER_OF_BITS) + | (generic_bignum[0] & LITTLENUM_MASK); small = 1; } else { - number = leader - generic_bignum + 1; /* number of littlenums in the bignum. */ + number = leader - generic_bignum + 1; /* number of littlenums in the bignum. */ } } - if (small) { - /* - * here with number, in correct radix. c is the next char. - * note that unlike un*x, we allow "011f" "0x9f" to - * both mean the same as the (conventional) "9f". this is simply easier - * than checking for strict canonical form. syntax sux! - */ - - switch (c) { - -#ifdef LOCAL_LABELS_FB - case 'b': { - /* - * backward ref to local label. - * because it is backward, expect it to be defined. - */ - /* - * construct a local label. - */ - name = fb_label_name((int) number, 0); - - /* seen before, or symbol is defined: ok */ - symbolP = symbol_find(name); - if ((symbolP != NULL) && (S_IS_DEFINED(symbolP))) { - - /* local labels are never absolute. don't waste time checking absoluteness. */ - know(SEG_NORMAL(S_GET_SEGMENT(symbolP))); - - expressionP->X_add_symbol = symbolP; - expressionP->X_seg = S_GET_SEGMENT(symbolP); - - } else { /* either not seen or not defined. */ - as_bad("backw. ref to unknown label \"%d:\", 0 assumed.", number); - expressionP->X_seg = SEG_ABSOLUTE; - } - - expressionP->X_add_number = 0; - break; - } /* case 'b' */ - - case 'f': { + if (small) + { /* - * forward reference. expect symbol to be undefined or - * unknown. undefined: seen it before. unknown: never seen - * it before. - * construct a local label name, then an undefined symbol. - * don't create a xseg frag for it: caller may do that. - * just return it as never seen before. + * here with number, in correct radix. c is the next char. + * note that unlike un*x, we allow "011f" "0x9f" to + * both mean the same as the (conventional) "9f". this is simply easier + * than checking for strict canonical form. syntax sux! */ - name = fb_label_name((int) number, 1); - symbolP = symbol_find_or_make(name); - /* we have no need to check symbol properties. */ + + switch (c) + { + +#ifdef LOCAL_LABELS_FB + case 'b': + { + /* + * backward ref to local label. + * because it is backward, expect it to be defined. + */ + /* Construct a local label. */ + name = fb_label_name ((int) number, 0); + + /* seen before, or symbol is defined: ok */ + symbolP = symbol_find (name); + if ((symbolP != NULL) && (S_IS_DEFINED (symbolP))) + { + + /* local labels are never absolute. don't waste time + checking absoluteness. */ + know (SEG_NORMAL (S_GET_SEGMENT (symbolP))); + + expressionP->X_add_symbol = symbolP; + expressionP->X_seg = S_GET_SEGMENT (symbolP); + + } + else + { /* either not seen or not defined. */ + as_bad ("backw. ref to unknown label \"%d:\", 0 assumed.", number); + expressionP->X_seg = SEG_ABSOLUTE; + } + + expressionP->X_add_number = 0; + break; + } /* case 'b' */ + + case 'f': + { + /* + * forward reference. expect symbol to be undefined or + * unknown. undefined: seen it before. unknown: never seen + * it before. + * construct a local label name, then an undefined symbol. + * don't create a xseg frag for it: caller may do that. + * just return it as never seen before. + */ + name = fb_label_name ((int) number, 1); + symbolP = symbol_find_or_make (name); + /* we have no need to check symbol properties. */ #ifndef many_segments - /* since "know" puts its arg into a "string", we - can't have newlines in the argument. */ - know(S_GET_SEGMENT(symbolP) == SEG_UNKNOWN || S_GET_SEGMENT(symbolP) == SEG_TEXT || S_GET_SEGMENT(symbolP) == SEG_DATA); + /* since "know" puts its arg into a "string", we + can't have newlines in the argument. */ + know (S_GET_SEGMENT (symbolP) == SEG_UNKNOWN || S_GET_SEGMENT (symbolP) == SEG_TEXT || S_GET_SEGMENT (symbolP) == SEG_DATA); #endif - expressionP->X_add_symbol = symbolP; - expressionP->X_seg = SEG_UNKNOWN; - expressionP->X_subtract_symbol = NULL; - expressionP->X_add_number = 0; - - break; - } /* case 'f' */ - + expressionP->X_add_symbol = symbolP; + expressionP->X_seg = SEG_UNKNOWN; + expressionP->X_subtract_symbol = NULL; + expressionP->X_add_number = 0; + + break; + } /* case 'f' */ + #endif /* LOCAL_LABELS_FB */ - + #ifdef LOCAL_LABELS_DOLLAR - - case '$': { - - /* if the dollar label is *currently* defined, then this is just another - reference to it. If it is not *currently* defined, then this is a - fresh instantiation of that number, so create it. */ - - if (dollar_label_defined(number)) { - name = dollar_label_name(number, 0); - symbolP = symbol_find(name); - know(symbolP != NULL); - } else { - name = dollar_label_name(number, 1); - symbolP = symbol_find_or_make(name); - } - - expressionP->X_add_symbol = symbolP; - expressionP->X_add_number = 0; - expressionP->X_seg = S_GET_SEGMENT(symbolP); - break; - } /* case '$' */ - + case '$': + { + + /* If the dollar label is *currently* defined, then this is just + another reference to it. If it is not *currently* defined, + then this is a fresh instantiation of that number, so create + it. */ + + if (dollar_label_defined (number)) + { + name = dollar_label_name (number, 0); + symbolP = symbol_find (name); + know (symbolP != NULL); + } + else + { + name = dollar_label_name (number, 1); + symbolP = symbol_find_or_make (name); + } + + expressionP->X_add_symbol = symbolP; + expressionP->X_add_number = 0; + expressionP->X_seg = S_GET_SEGMENT (symbolP); + + break; + } /* case '$' */ + #endif /* LOCAL_LABELS_DOLLAR */ - - default: { + + default: + { + expressionP->X_add_number = number; + expressionP->X_seg = SEG_ABSOLUTE; + input_line_pointer--; /* restore following character. */ + break; + } /* really just a number */ + + } /* switch on char following the number */ + + + } + else + { /* not a small number */ expressionP->X_add_number = number; - expressionP->X_seg = SEG_ABSOLUTE; - input_line_pointer--; /* restore following character. */ - break; - } /* really just a number */ - - } /* switch on char following the number */ - - - } else { /* not a small number */ - expressionP->X_add_number = number; - expressionP->X_seg = SEG_BIG; - input_line_pointer --; /*->char following number. */ - } /* if (small) */ -} /* integer_constant() */ + expressionP->X_seg = SEG_BIG; + input_line_pointer--; /*->char following number. */ + } /* if (small) */ +} /* integer_constant() */ /* @@ -339,14 +352,14 @@ expressionS *expressionP; static segT operand (expressionP) - register expressionS * expressionP; + register expressionS *expressionP; { register char c; - register symbolS * symbolP; /* points to symbol */ - register char *name; /* points to name of symbol */ + register symbolS *symbolP; /* points to symbol */ + register char *name; /* points to name of symbol */ /* invented for humans only, hope */ /* optimising compiler flushes it! */ - register short int radix; /* 2, 8, 10 or 16, 0 when floating */ + register short int radix; /* 2, 8, 10 or 16, 0 when floating */ /* 0 means we saw start of a floating- */ /* point constant. */ @@ -355,74 +368,22 @@ operand (expressionP) - SKIP_WHITESPACE(); /* leading whitespace is part of operand. */ - c = * input_line_pointer ++; /* input_line_pointer->past char in c. */ + SKIP_WHITESPACE (); /* leading whitespace is part of operand. */ + c = *input_line_pointer++; /* input_line_pointer->past char in c. */ switch (c) - { -#ifdef MRI - case '%': - integer_constant(2, expressionP); - break; - case '@': - integer_constant(8, expressionP); - break; - case '$': - integer_constant(16, expressionP); - break; -#endif - case '1': - case '2': - case '3': - case '4': - case '5': - case '6': - case '7': - case '8': - case '9': - input_line_pointer--; - - integer_constant(10, expressionP); - break; - - case '0': - /* non-decimal radix */ - - - c = *input_line_pointer; - switch (c) { - - default: - if (c && strchr(FLT_CHARS,c)) - { - input_line_pointer++; - floating_constant(expressionP); - } - else - { - - - /* The string was only zero */ - expressionP->X_add_symbol = 0; - expressionP->X_add_number = 0; - expressionP->X_seg = SEG_ABSOLUTE; - } - +#ifdef MRI + case '%': + integer_constant (2, expressionP); break; - - case 'x': - case 'X': - input_line_pointer++; - integer_constant(16, expressionP); + case '@': + integer_constant (8, expressionP); break; - case 'B': - case 'b': - input_line_pointer++; - integer_constant(2, expressionP); + case '$': + integer_constant (16, expressionP); break; - - case '0': +#endif case '1': case '2': case '3': @@ -430,198 +391,269 @@ operand (expressionP) case '5': case '6': case '7': - integer_constant(8, expressionP); + case '8': + case '9': + input_line_pointer--; + + integer_constant (10, expressionP); break; - case 'f': - /* if it says '0f' and the line ends or it doesn't look like + case '0': + /* non-decimal radix */ + + + c = *input_line_pointer; + switch (c) + { + + default: + if (c && strchr (FLT_CHARS, c)) + { + input_line_pointer++; + floating_constant (expressionP); + } + else + { + /* The string was only zero */ + expressionP->X_add_symbol = 0; + expressionP->X_add_number = 0; + expressionP->X_seg = SEG_ABSOLUTE; + } + + break; + + case 'x': + case 'X': + input_line_pointer++; + integer_constant (16, expressionP); + break; + + case 'b': +#ifdef LOCAL_LABELS_FB + if (!*input_line_pointer + || (!strchr ("+-.0123456789", *input_line_pointer) + && !strchr (EXP_CHARS, *input_line_pointer))) + { + input_line_pointer--; + integer_constant (10, expressionP); + break; + } +#endif + case 'B': + input_line_pointer++; + integer_constant (2, expressionP); + break; + + case '0': + case '1': + case '2': + case '3': + case '4': + case '5': + case '6': + case '7': + integer_constant (8, expressionP); + break; + + case 'f': +#ifdef LOCAL_LABELS_FB + /* if it says '0f' and the line ends or it doesn't look like a floating point #, its a local label ref. dtrt */ - /* likewise for the b's. xoxorich. */ - if ((c == 'f' || c == 'b' || c == 'b') - && (!*input_line_pointer || - (!strchr("+-.0123456789",*input_line_pointer) && - !strchr(EXP_CHARS,*input_line_pointer)))) - { - input_line_pointer -= 2; - integer_constant(10, expressionP); - break; - } - - case 'd': - case 'D': - case 'F': - case 'r': - case 'e': - case 'E': - case 'g': - case 'G': - - input_line_pointer++; - floating_constant(expressionP); + /* likewise for the b's. xoxorich. */ + if (c == 'f' + && (!*input_line_pointer || + (!strchr ("+-.0123456789", *input_line_pointer) && + !strchr (EXP_CHARS, *input_line_pointer)))) + { + input_line_pointer -= 1; + integer_constant (10, expressionP); + break; + } +#endif + + case 'd': + case 'D': + case 'F': + case 'r': + case 'e': + case 'E': + case 'g': + case 'G': + + input_line_pointer++; + floating_constant (expressionP); + break; + +#ifdef LOCAL_LABELS_DOLLAR + case '$': + integer_constant (10, expressionP); + break; +#endif + } + break; - } - - break; - case '(': - /* didn't begin with digit & not a name */ - { - (void)expression(expressionP); - /* Expression() will pass trailing whitespace */ - if (* input_line_pointer ++ != ')') - { - as_bad("Missing ')' assumed"); - input_line_pointer --; - } - /* here with input_line_pointer->char after "(...)" */ - } - return expressionP->X_seg; + case '(': + /* didn't begin with digit & not a name */ + { + (void) expression (expressionP); + /* Expression() will pass trailing whitespace */ + if (*input_line_pointer++ != ')') + { + as_bad ("Missing ')' assumed"); + input_line_pointer--; + } + /* here with input_line_pointer->char after "(...)" */ + } + return expressionP->X_seg; - case '\'': - /* + case '\'': + /* * Warning: to conform to other people's assemblers NO ESCAPEMENT is permitted * for a single quote. The next character, parity errors and all, is taken * as the value of the operand. VERY KINKY. */ - expressionP->X_add_number = * input_line_pointer ++; - expressionP->X_seg = SEG_ABSOLUTE; - break; - - case '~': - case '-': - case '+': - - { - /* unary operator: hope for SEG_ABSOLUTE */ - switch(operand (expressionP)) { - case SEG_ABSOLUTE: - /* input_line_pointer -> char after operand */ - if ( c=='-' ) - { - expressionP -> X_add_number = - expressionP -> X_add_number; - /* + expressionP->X_add_number = *input_line_pointer++; + expressionP->X_seg = SEG_ABSOLUTE; + break; + + case '~': + case '-': + case '+': + + { + /* unary operator: hope for SEG_ABSOLUTE */ + switch (operand (expressionP)) + { + case SEG_ABSOLUTE: + /* input_line_pointer -> char after operand */ + if (c == '-') + { + expressionP->X_add_number = -expressionP->X_add_number; + /* * Notice: '-' may overflow: no warning is given. This is compatible * with other people's assemblers. Sigh. */ - } - else - { - expressionP -> X_add_number = ~ expressionP -> X_add_number; - } - break; - - case SEG_TEXT: - case SEG_DATA: - case SEG_BSS: - case SEG_PASS1: - case SEG_UNKNOWN: - if(c=='-') { /* JF I hope this hack works */ - expressionP->X_subtract_symbol=expressionP->X_add_symbol; - expressionP->X_add_symbol=0; - expressionP->X_seg=SEG_DIFFERENCE; + } + else + { + expressionP->X_add_number = ~expressionP->X_add_number; + } + break; + + case SEG_TEXT: + case SEG_DATA: + case SEG_BSS: + case SEG_PASS1: + case SEG_UNKNOWN: + if (c == '-') + { /* JF I hope this hack works */ + expressionP->X_subtract_symbol = expressionP->X_add_symbol; + expressionP->X_add_symbol = 0; + expressionP->X_seg = SEG_DIFFERENCE; + break; + } + default: /* unary on non-absolute is unsuported */ + as_warn ("Unary operator %c ignored because bad operand follows", c); break; + /* Expression undisturbed from operand(). */ } - default: /* unary on non-absolute is unsuported */ - as_warn("Unary operator %c ignored because bad operand follows", c); - break; - /* Expression undisturbed from operand(). */ } - } - - - break; - case '.': - if( !is_part_of_name(*input_line_pointer)) - { - extern struct obstack frags; - - /* + + break; + + case '.': + if (!is_part_of_name (*input_line_pointer)) + { + extern struct obstack frags; + + /* JF: '.' is pseudo symbol with value of current location in current segment. . . */ - symbolP = symbol_new("L0\001", - now_seg, - (valueT)(obstack_next_free(&frags)-frag_now->fr_literal), - frag_now); - - expressionP->X_add_number=0; - expressionP->X_add_symbol=symbolP; - expressionP->X_seg = now_seg; - break; - - } - else - { - goto isname; - + symbolP = symbol_new ("L0\001", + now_seg, + (valueT) (obstack_next_free (&frags) - frag_now->fr_literal), + frag_now); - } - case ',': - case '\n': - /* can't imagine any other kind of operand */ - expressionP->X_seg = SEG_ABSENT; - input_line_pointer --; - md_operand (expressionP); - break; - /* Fall through */ - default: - if (is_name_beginner(c)) /* here if did not begin with a digit */ - { - /* + expressionP->X_add_number = 0; + expressionP->X_add_symbol = symbolP; + expressionP->X_seg = now_seg; + break; + + } + else + { + goto isname; + + + } + case ',': + case '\n': + /* can't imagine any other kind of operand */ + expressionP->X_seg = SEG_ABSENT; + input_line_pointer--; + md_operand (expressionP); + break; + /* Fall through */ + default: + if (is_name_beginner (c)) /* here if did not begin with a digit */ + { + /* * Identifier begins here. * This is kludged for speed, so code is repeated. */ - isname: - name = -- input_line_pointer; - c = get_symbol_end(); - symbolP = symbol_find_or_make(name); - /* + isname: + name = --input_line_pointer; + c = get_symbol_end (); + symbolP = symbol_find_or_make (name); + /* * If we have an absolute symbol or a reg, then we know its value now. */ - expressionP->X_seg = S_GET_SEGMENT(symbolP); - switch (expressionP->X_seg) - { - case SEG_ABSOLUTE: - case SEG_REGISTER: - expressionP->X_add_number = S_GET_VALUE(symbolP); - break; - - default: - expressionP->X_add_number = 0; - expressionP->X_add_symbol = symbolP; - } - * input_line_pointer = c; - expressionP->X_subtract_symbol = NULL; - } - else - { - as_bad("Bad expression"); - expressionP->X_add_number = 0; - expressionP->X_seg = SEG_ABSOLUTE; + expressionP->X_seg = S_GET_SEGMENT (symbolP); + switch (expressionP->X_seg) + { + case SEG_ABSOLUTE: + case SEG_REGISTER: + expressionP->X_add_number = S_GET_VALUE (symbolP); + break; + + default: + expressionP->X_add_number = 0; + expressionP->X_add_symbol = symbolP; + } + *input_line_pointer = c; + expressionP->X_subtract_symbol = NULL; + } + else + { + as_bad ("Bad expression"); + expressionP->X_add_number = 0; + expressionP->X_seg = SEG_ABSOLUTE; + + } } - - } - - - - + + + + /* * It is more 'efficient' to clean up the expressionS when they are created. * Doing it here saves lines of code. */ clean_up_expression (expressionP); - SKIP_WHITESPACE(); /*->1st char after operand. */ - know(* input_line_pointer != ' '); + SKIP_WHITESPACE (); /*->1st char after operand. */ + know (*input_line_pointer != ' '); return (expressionP->X_seg); -} /* operand() */ - +} /* operand() */ + /* Internal. Simplify a struct expression for use by expr() */ /* @@ -637,60 +669,63 @@ operand (expressionP) static void clean_up_expression (expressionP) - register expressionS * expressionP; + register expressionS *expressionP; { switch (expressionP->X_seg) - { - case SEG_ABSENT: - case SEG_PASS1: - expressionP->X_add_symbol = NULL; - expressionP->X_subtract_symbol = NULL; - expressionP->X_add_number = 0; - break; - - case SEG_BIG: - case SEG_ABSOLUTE: - expressionP->X_subtract_symbol = NULL; - expressionP->X_add_symbol = NULL; - break; - - case SEG_UNKNOWN: - expressionP->X_subtract_symbol = NULL; - break; - - case SEG_DIFFERENCE: - /* + { + case SEG_ABSENT: + case SEG_PASS1: + expressionP->X_add_symbol = NULL; + expressionP->X_subtract_symbol = NULL; + expressionP->X_add_number = 0; + break; + + case SEG_BIG: + case SEG_ABSOLUTE: + expressionP->X_subtract_symbol = NULL; + expressionP->X_add_symbol = NULL; + break; + + case SEG_UNKNOWN: + expressionP->X_subtract_symbol = NULL; + break; + + case SEG_DIFFERENCE: + /* * It does not hurt to 'cancel' NULL==NULL * when comparing symbols for 'eq'ness. * It is faster to re-cancel them to NULL * than to check for this special case. */ - if (expressionP->X_subtract_symbol == expressionP->X_add_symbol - || (expressionP->X_subtract_symbol - && expressionP->X_add_symbol - && expressionP->X_subtract_symbol->sy_frag==expressionP->X_add_symbol->sy_frag - && S_GET_VALUE(expressionP->X_subtract_symbol) == S_GET_VALUE(expressionP->X_add_symbol))) { - expressionP->X_subtract_symbol = NULL; - expressionP->X_add_symbol = NULL; - expressionP->X_seg = SEG_ABSOLUTE; + if (expressionP->X_subtract_symbol == expressionP->X_add_symbol + || (expressionP->X_subtract_symbol + && expressionP->X_add_symbol + && expressionP->X_subtract_symbol->sy_frag == expressionP->X_add_symbol->sy_frag + && S_GET_VALUE (expressionP->X_subtract_symbol) == S_GET_VALUE (expressionP->X_add_symbol))) + { + expressionP->X_subtract_symbol = NULL; + expressionP->X_add_symbol = NULL; + expressionP->X_seg = SEG_ABSOLUTE; } - break; + break; - case SEG_REGISTER: - expressionP->X_add_symbol = NULL; - expressionP->X_subtract_symbol = NULL; - break; + case SEG_REGISTER: + expressionP->X_add_symbol = NULL; + expressionP->X_subtract_symbol = NULL; + break; - default: - if (SEG_NORMAL(expressionP->X_seg)) { - expressionP->X_subtract_symbol = NULL; + default: + if (SEG_NORMAL (expressionP->X_seg)) + { + expressionP->X_subtract_symbol = NULL; } - else { - BAD_CASE (expressionP->X_seg); + else + { + BAD_CASE (expressionP->X_seg); } - break; - } -} /* clean_up_expression() */ + break; + } +} /* clean_up_expression() */ /* * expr_part () @@ -705,50 +740,50 @@ clean_up_expression (expressionP) static segT expr_part (symbol_1_PP, symbol_2_P) - symbolS ** symbol_1_PP; - symbolS * symbol_2_P; + symbolS **symbol_1_PP; + symbolS *symbol_2_P; { - segT return_value; + segT return_value; #ifndef MANY_SEGMENTS - know((* symbol_1_PP) == NULL || (S_GET_SEGMENT(*symbol_1_PP) == SEG_TEXT) || (S_GET_SEGMENT(*symbol_1_PP) == SEG_DATA) || (S_GET_SEGMENT(*symbol_1_PP) == SEG_BSS) || (!S_IS_DEFINED(* symbol_1_PP))); - know(symbol_2_P == NULL || (S_GET_SEGMENT(symbol_2_P) == SEG_TEXT) || (S_GET_SEGMENT(symbol_2_P) == SEG_DATA) || (S_GET_SEGMENT(symbol_2_P) == SEG_BSS) || (!S_IS_DEFINED(symbol_2_P))); + know ((*symbol_1_PP) == NULL || (S_GET_SEGMENT (*symbol_1_PP) == SEG_TEXT) || (S_GET_SEGMENT (*symbol_1_PP) == SEG_DATA) || (S_GET_SEGMENT (*symbol_1_PP) == SEG_BSS) || (!S_IS_DEFINED (*symbol_1_PP))); + know (symbol_2_P == NULL || (S_GET_SEGMENT (symbol_2_P) == SEG_TEXT) || (S_GET_SEGMENT (symbol_2_P) == SEG_DATA) || (S_GET_SEGMENT (symbol_2_P) == SEG_BSS) || (!S_IS_DEFINED (symbol_2_P))); #endif - if (* symbol_1_PP) + if (*symbol_1_PP) { - if (!S_IS_DEFINED(* symbol_1_PP)) + if (!S_IS_DEFINED (*symbol_1_PP)) { if (symbol_2_P) { - return_value = SEG_PASS1; - * symbol_1_PP = NULL; + return_value = SEG_PASS1; + *symbol_1_PP = NULL; } else { - know(!S_IS_DEFINED(* symbol_1_PP)); - return_value = SEG_UNKNOWN; + know (!S_IS_DEFINED (*symbol_1_PP)); + return_value = SEG_UNKNOWN; } } else { if (symbol_2_P) { - if (!S_IS_DEFINED(symbol_2_P)) + if (!S_IS_DEFINED (symbol_2_P)) { - * symbol_1_PP = NULL; + *symbol_1_PP = NULL; return_value = SEG_PASS1; } else { /* {seg1} - {seg2} */ - as_bad("Expression too complex, 2 symbolS forgotten: \"%s\" \"%s\"", - S_GET_NAME(* symbol_1_PP), S_GET_NAME(symbol_2_P)); - * symbol_1_PP = NULL; + as_bad ("Expression too complex, 2 symbolS forgotten: \"%s\" \"%s\"", + S_GET_NAME (*symbol_1_PP), S_GET_NAME (symbol_2_P)); + *symbol_1_PP = NULL; return_value = SEG_ABSOLUTE; } } else { - return_value = S_GET_SEGMENT(* symbol_1_PP); + return_value = S_GET_SEGMENT (*symbol_1_PP); } } } @@ -756,19 +791,19 @@ expr_part (symbol_1_PP, symbol_2_P) { /* (* symbol_1_PP) == NULL */ if (symbol_2_P) { - * symbol_1_PP = symbol_2_P; - return_value = S_GET_SEGMENT(symbol_2_P); + *symbol_1_PP = symbol_2_P; + return_value = S_GET_SEGMENT (symbol_2_P); } else { - * symbol_1_PP = NULL; + *symbol_1_PP = NULL; return_value = SEG_ABSOLUTE; } } #ifndef MANY_SEGMENTS - know(return_value == SEG_ABSOLUTE || return_value == SEG_TEXT || return_value == SEG_DATA || return_value == SEG_BSS || return_value == SEG_UNKNOWN || return_value == SEG_PASS1); + know (return_value == SEG_ABSOLUTE || return_value == SEG_TEXT || return_value == SEG_DATA || return_value == SEG_BSS || return_value == SEG_UNKNOWN || return_value == SEG_PASS1); #endif - know((*symbol_1_PP) == NULL || (S_GET_SEGMENT(*symbol_1_PP) == return_value)); + know ((*symbol_1_PP) == NULL || (S_GET_SEGMENT (*symbol_1_PP) == return_value)); return (return_value); } /* expr_part() */ @@ -794,51 +829,53 @@ expr_part (symbol_1_PP, symbol_2_P) typedef enum { - O_illegal, /* (0) what we get for illegal op */ - - O_multiply, /* (1) * */ - O_divide, /* (2) / */ - O_modulus, /* (3) % */ - O_left_shift, /* (4) < */ - O_right_shift, /* (5) > */ - O_bit_inclusive_or, /* (6) | */ - O_bit_or_not, /* (7) ! */ - O_bit_exclusive_or, /* (8) ^ */ - O_bit_and, /* (9) & */ - O_add, /* (10) + */ - O_subtract /* (11) - */ - } + O_illegal, /* (0) what we get for illegal op */ + + O_multiply, /* (1) * */ + O_divide, /* (2) / */ + O_modulus, /* (3) % */ + O_left_shift, /* (4) < */ + O_right_shift, /* (5) > */ + O_bit_inclusive_or, /* (6) | */ + O_bit_or_not, /* (7) ! */ + O_bit_exclusive_or, /* (8) ^ */ + O_bit_and, /* (9) & */ + O_add, /* (10) + */ + O_subtract /* (11) - */ +} + operatorT; #define __ O_illegal -static const operatorT op_encoding [256] = { /* maps ASCII->operators */ - - __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, - __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, - - __, O_bit_or_not, __, __, __, O_modulus, O_bit_and, __, - __, __, O_multiply, O_add, __, O_subtract, __, O_divide, - __, __, __, __, __, __, __, __, - __, __, __, __, O_left_shift, __, O_right_shift, __, - __, __, __, __, __, __, __, __, - __, __, __, __, __, __, __, __, - __, __, __, __, __, __, __, __, - __, __, __, __, __, __, O_bit_exclusive_or, __, - __, __, __, __, __, __, __, __, - __, __, __, __, __, __, __, __, - __, __, __, __, __, __, __, __, - __, __, __, __, O_bit_inclusive_or, __, __, __, - - __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, - __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, - __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, - __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, - __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, - __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, - __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, - __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __ - }; +static const operatorT op_encoding[256] = +{ /* maps ASCII->operators */ + + __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, + __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, + + __, O_bit_or_not, __, __, __, O_modulus, O_bit_and, __, + __, __, O_multiply, O_add, __, O_subtract, __, O_divide, + __, __, __, __, __, __, __, __, + __, __, __, __, O_left_shift, __, O_right_shift, __, + __, __, __, __, __, __, __, __, + __, __, __, __, __, __, __, __, + __, __, __, __, __, __, __, __, + __, __, __, __, __, __, O_bit_exclusive_or, __, + __, __, __, __, __, __, __, __, + __, __, __, __, __, __, __, __, + __, __, __, __, __, __, __, __, + __, __, __, __, O_bit_inclusive_or, __, __, __, + + __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, + __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, + __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, + __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, + __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, + __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, + __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, + __, __, __, __, __, __, __, __, __, __, __, __, __, __, __, __ +}; /* @@ -849,53 +886,55 @@ static const operatorT op_encoding [256] = { /* maps ASCII->operators */ * 3 * / % << >> */ static const operator_rankT -op_rank [] = { 0, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1 }; + op_rank[] = +{0, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1}; /* Return resultP->X_seg. */ -segT expr(rank, resultP) -register operator_rankT rank; /* Larger # is higher rank. */ -register expressionS *resultP; /* Deliver result here. */ +segT +expr (rank, resultP) + register operator_rankT rank; /* Larger # is higher rank. */ + register expressionS *resultP; /* Deliver result here. */ { - expressionS right; - register operatorT op_left; - register char c_left; /* 1st operator character. */ - register operatorT op_right; + expressionS right; + register operatorT op_left; + register char c_left; /* 1st operator character. */ + register operatorT op_right; register char c_right; - know(rank >= 0); - (void)operand (resultP); - know(* input_line_pointer != ' '); /* Operand() gobbles spaces. */ - c_left = * input_line_pointer; /* Potential operator character. */ - op_left = op_encoding [c_left]; - while (op_left != O_illegal && op_rank [(int) op_left] > rank) + know (rank >= 0); + (void) operand (resultP); + know (*input_line_pointer != ' '); /* Operand() gobbles spaces. */ + c_left = *input_line_pointer; /* Potential operator character. */ + op_left = op_encoding[c_left]; + while (op_left != O_illegal && op_rank[(int) op_left] > rank) { - input_line_pointer ++; /*->after 1st character of operator. */ - /* Operators "<<" and ">>" have 2 characters. */ - if (* input_line_pointer == c_left && (c_left == '<' || c_left == '>')) + input_line_pointer++; /*->after 1st character of operator. */ + /* Operators "<<" and ">>" have 2 characters. */ + if (*input_line_pointer == c_left && (c_left == '<' || c_left == '>')) { - input_line_pointer ++; + input_line_pointer++; } /*->after operator. */ if (SEG_ABSENT == expr (op_rank[(int) op_left], &right)) { - as_warn("Missing operand value assumed absolute 0."); - resultP->X_add_number = 0; - resultP->X_subtract_symbol = NULL; - resultP->X_add_symbol = NULL; + as_warn ("Missing operand value assumed absolute 0."); + resultP->X_add_number = 0; + resultP->X_subtract_symbol = NULL; + resultP->X_add_symbol = NULL; resultP->X_seg = SEG_ABSOLUTE; } - know(* input_line_pointer != ' '); - c_right = * input_line_pointer; - op_right = op_encoding [c_right]; - if (* input_line_pointer == c_right && (c_right == '<' || c_right == '>')) + know (*input_line_pointer != ' '); + c_right = *input_line_pointer; + op_right = op_encoding[c_right]; + if (*input_line_pointer == c_right && (c_right == '<' || c_right == '>')) { - input_line_pointer ++; + input_line_pointer++; } /*->after operator. */ - know((int) op_right == 0 || op_rank [(int) op_right] <= op_rank[(int) op_left]); + know ((int) op_right == 0 || op_rank[(int) op_right] <= op_rank[(int) op_left]); /* input_line_pointer->after right-hand quantity. */ /* left-hand quantity in resultP */ /* right-hand quantity in right. */ /* operator in op_left. */ - if (resultP->X_seg == SEG_PASS1 || right . X_seg == SEG_PASS1) + if (resultP->X_seg == SEG_PASS1 || right.X_seg == SEG_PASS1) { resultP->X_seg = SEG_PASS1; } @@ -903,21 +942,21 @@ register expressionS *resultP; /* Deliver result here. */ { if (resultP->X_seg == SEG_BIG) { - as_warn("Left operand of %c is a %s. Integer 0 assumed.", - c_left, resultP->X_add_number > 0 ? "bignum" : "float"); + as_warn ("Left operand of %c is a %s. Integer 0 assumed.", + c_left, resultP->X_add_number > 0 ? "bignum" : "float"); resultP->X_seg = SEG_ABSOLUTE; resultP->X_add_symbol = 0; resultP->X_subtract_symbol = 0; resultP->X_add_number = 0; } - if (right . X_seg == SEG_BIG) + if (right.X_seg == SEG_BIG) { - as_warn("Right operand of %c is a %s. Integer 0 assumed.", - c_left, right . X_add_number > 0 ? "bignum" : "float"); - right . X_seg = SEG_ABSOLUTE; - right . X_add_symbol = 0; - right . X_subtract_symbol = 0; - right . X_add_number = 0; + as_warn ("Right operand of %c is a %s. Integer 0 assumed.", + c_left, right.X_add_number > 0 ? "bignum" : "float"); + right.X_seg = SEG_ABSOLUTE; + right.X_add_symbol = 0; + right.X_subtract_symbol = 0; + right.X_add_number = 0; } if (op_left == O_subtract) { @@ -928,65 +967,69 @@ register expressionS *resultP; /* Deliver result here. */ * does not cause any further inaccuracy. */ - register symbolS * symbolP; + register symbolS *symbolP; - right . X_add_number = - right . X_add_number; - symbolP = right . X_add_symbol; - right . X_add_symbol = right . X_subtract_symbol; - right . X_subtract_symbol = symbolP; + right.X_add_number = -right.X_add_number; + symbolP = right.X_add_symbol; + right.X_add_symbol = right.X_subtract_symbol; + right.X_subtract_symbol = symbolP; if (symbolP) { - right . X_seg = SEG_DIFFERENCE; + right.X_seg = SEG_DIFFERENCE; } op_left = O_add; } if (op_left == O_add) { - segT seg1; - segT seg2; + segT seg1; + segT seg2; #ifndef MANY_SEGMENTS - know(resultP->X_seg == SEG_DATA || resultP->X_seg == SEG_TEXT || resultP->X_seg == SEG_BSS || resultP->X_seg == - SEG_UNKNOWN || resultP->X_seg == SEG_DIFFERENCE || resultP->X_seg == SEG_ABSOLUTE || resultP->X_seg == SEG_PASS1 - || resultP->X_seg == SEG_REGISTER); - know(right.X_seg == SEG_DATA || right.X_seg == SEG_TEXT || right.X_seg == SEG_BSS || right.X_seg == SEG_UNKNOWN || right.X_seg == SEG_DIFFERENCE || right.X_seg == SEG_ABSOLUTE || right.X_seg == SEG_PASS1); + + know (resultP->X_seg == SEG_DATA || resultP->X_seg == SEG_TEXT || resultP->X_seg == SEG_BSS || resultP->X_seg == SEG_UNKNOWN || resultP->X_seg == SEG_DIFFERENCE || resultP->X_seg == SEG_ABSOLUTE || resultP->X_seg == SEG_PASS1 || resultP->X_seg == SEG_REGISTER); + + know (right.X_seg == SEG_DATA || right.X_seg == SEG_TEXT || right.X_seg == SEG_BSS || right.X_seg == SEG_UNKNOWN || right.X_seg == SEG_DIFFERENCE || right.X_seg == SEG_ABSOLUTE || right.X_seg == SEG_PASS1); #endif - clean_up_expression (& right); + clean_up_expression (&right); clean_up_expression (resultP); - seg1 = expr_part (& resultP->X_add_symbol, right . X_add_symbol); - seg2 = expr_part (& resultP->X_subtract_symbol, right . X_subtract_symbol); - if (seg1 == SEG_PASS1 || seg2 == SEG_PASS1) { - need_pass_2 = 1; - resultP->X_seg = SEG_PASS1; - } else if (seg2 == SEG_ABSOLUTE) - resultP->X_seg = seg1; + seg1 = expr_part (&resultP->X_add_symbol, right.X_add_symbol); + seg2 = expr_part (&resultP->X_subtract_symbol, right.X_subtract_symbol); + if (seg1 == SEG_PASS1 || seg2 == SEG_PASS1) + { + need_pass_2 = 1; + resultP->X_seg = SEG_PASS1; + } + else if (seg2 == SEG_ABSOLUTE) + resultP->X_seg = seg1; else if (seg1 != SEG_UNKNOWN && seg1 != SEG_ABSOLUTE && seg2 != SEG_UNKNOWN - && seg1 != seg2) { - know(seg2 != SEG_ABSOLUTE); - know(resultP->X_subtract_symbol); + && seg1 != seg2) + { + know (seg2 != SEG_ABSOLUTE); + know (resultP->X_subtract_symbol); #ifndef MANY_SEGMENTS - know(seg1 == SEG_TEXT || seg1 == SEG_DATA || seg1== SEG_BSS); - know(seg2 == SEG_TEXT || seg2 == SEG_DATA || seg2== SEG_BSS); + know (seg1 == SEG_TEXT || seg1 == SEG_DATA || seg1 == SEG_BSS); + know (seg2 == SEG_TEXT || seg2 == SEG_DATA || seg2 == SEG_BSS); #endif - know(resultP->X_add_symbol); - know(resultP->X_subtract_symbol); - as_bad("Expression too complex: forgetting %s - %s", - S_GET_NAME(resultP->X_add_symbol), - S_GET_NAME(resultP->X_subtract_symbol)); - resultP->X_seg = SEG_ABSOLUTE; - /* Clean_up_expression() will do the rest. */ - } else - resultP->X_seg = SEG_DIFFERENCE; + know (resultP->X_add_symbol); + know (resultP->X_subtract_symbol); + as_bad ("Expression too complex: forgetting %s - %s", + S_GET_NAME (resultP->X_add_symbol), + S_GET_NAME (resultP->X_subtract_symbol)); + resultP->X_seg = SEG_ABSOLUTE; + /* Clean_up_expression() will do the rest. */ + } + else + resultP->X_seg = SEG_DIFFERENCE; - resultP->X_add_number += right . X_add_number; + resultP->X_add_number += right.X_add_number; clean_up_expression (resultP); - } + } else { /* Not +. */ - if (resultP->X_seg == SEG_UNKNOWN || right . X_seg == SEG_UNKNOWN) + if (resultP->X_seg == SEG_UNKNOWN || right.X_seg == SEG_UNKNOWN) { resultP->X_seg = SEG_PASS1; need_pass_2 = 1; @@ -996,10 +1039,10 @@ register expressionS *resultP; /* Deliver result here. */ resultP->X_subtract_symbol = NULL; resultP->X_add_symbol = NULL; /* Will be SEG_ABSOLUTE. */ - if (resultP->X_seg != SEG_ABSOLUTE || right . X_seg != SEG_ABSOLUTE) + if (resultP->X_seg != SEG_ABSOLUTE || right.X_seg != SEG_ABSOLUTE) { - as_bad("Relocation error. Absolute 0 assumed."); - resultP->X_seg = SEG_ABSOLUTE; + as_bad ("Relocation error. Absolute 0 assumed."); + resultP->X_seg = SEG_ABSOLUTE; resultP->X_add_number = 0; } else @@ -1007,68 +1050,68 @@ register expressionS *resultP; /* Deliver result here. */ switch (op_left) { case O_bit_inclusive_or: - resultP->X_add_number |= right . X_add_number; + resultP->X_add_number |= right.X_add_number; break; case O_modulus: - if (right . X_add_number) + if (right.X_add_number) { - resultP->X_add_number %= right . X_add_number; + resultP->X_add_number %= right.X_add_number; } else { - as_warn("Division by 0. 0 assumed."); + as_warn ("Division by 0. 0 assumed."); resultP->X_add_number = 0; } break; case O_bit_and: - resultP->X_add_number &= right . X_add_number; + resultP->X_add_number &= right.X_add_number; break; case O_multiply: - resultP->X_add_number *= right . X_add_number; + resultP->X_add_number *= right.X_add_number; break; case O_divide: - if (right . X_add_number) + if (right.X_add_number) { - resultP->X_add_number /= right . X_add_number; + resultP->X_add_number /= right.X_add_number; } else { - as_warn("Division by 0. 0 assumed."); - resultP->X_add_number = 0; + as_warn ("Division by 0. 0 assumed."); + resultP->X_add_number = 0; } - break; - + break; + case O_left_shift: - resultP->X_add_number <<= right . X_add_number; - break; - + resultP->X_add_number <<= right.X_add_number; + break; + case O_right_shift: - resultP->X_add_number >>= right . X_add_number; - break; - + resultP->X_add_number >>= right.X_add_number; + break; + case O_bit_exclusive_or: - resultP->X_add_number ^= right . X_add_number; - break; - + resultP->X_add_number ^= right.X_add_number; + break; + case O_bit_or_not: - resultP->X_add_number |= ~ right . X_add_number; - break; - + resultP->X_add_number |= ~right.X_add_number; + break; + default: - BAD_CASE(op_left); - break; - } /* switch(operator) */ + BAD_CASE (op_left); + break; + } /* switch(operator) */ } } /* If we have to force need_pass_2. */ } /* If operator was +. */ } /* If we didn't set need_pass_2. */ - op_left = op_right; + op_left = op_right; } /* While next operator is >= this rank. */ - return (resultP->X_seg); + return (resultP->X_seg); } /* @@ -1087,24 +1130,26 @@ register expressionS *resultP; /* Deliver result here. */ * lines end in end-of-line. */ char - get_symbol_end() +get_symbol_end () { - register char c; - - while (is_part_of_name(c = * input_line_pointer ++)) - ; - * -- input_line_pointer = 0; - return (c); + register char c; + + while (is_part_of_name (c = *input_line_pointer++)) + ; + *--input_line_pointer = 0; + return (c); } -unsigned int get_single_number() +unsigned int +get_single_number () { - expressionS exp; - operand(&exp); - return exp.X_add_number; - + expressionS exp; + operand (&exp); + return exp.X_add_number; + } + /* * Local Variables: * comment-column: 0