X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gas%2Fapp.c;h=00c31bbf3906fe5ca85a191b9350cedf8a9072d9;hb=db2d40f7d0b8477ca5ad9e305b8137a085434c97;hp=cbbd1bb801aa712397bc0c9bd9017900b59d197a;hpb=5b93d8bb517c1f5715435dcf627a8642f557ddb2;p=deliverable%2Fbinutils-gdb.git diff --git a/gas/app.c b/gas/app.c index cbbd1bb801..00c31bbf39 100644 --- a/gas/app.c +++ b/gas/app.c @@ -1,32 +1,30 @@ /* This is the Assembler Pre-Processor - Copyright (C) 1987, 90, 91, 92, 93, 94, 95, 96, 97, 98, 1999 - Free Software Foundation, Inc. + Copyright (C) 1987-2020 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) + the Free Software Foundation; either version 3, 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. + 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, 59 Temple Place - Suite 330, Boston, MA - 02111-1307, USA. */ + Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA + 02110-1301, USA. */ -/* Modified by Allen Wirfs-Brock, Instantiations Inc 2/90 */ -/* App, the assembler pre-processor. This pre-processor strips out excess - spaces, turns single-quoted characters into a decimal constant, and turns - # into a .line \n.file - pair. This needs better error-handling. */ +/* Modified by Allen Wirfs-Brock, Instantiations Inc 2/90. */ +/* App, the assembler pre-processor. This pre-processor strips out + excess spaces, turns single-quoted characters into a decimal + constant, and turns the # in # into a + .linefile. This needs better error-handling. */ -#include -#include "as.h" /* For BAD_CASE() only */ +#include "as.h" #if (__STDC__ != 1) #ifndef const @@ -34,6 +32,11 @@ #endif #endif +#ifdef H_TICK_HEX +int enable_h_tick_hex = 0; +#endif + +#ifdef TC_M68K /* Whether we are scrubbing in m68k MRI mode. This is different from flag_m68k_mri, because the two flags will be affected by the .mri pseudo-op at different times. */ @@ -42,13 +45,19 @@ static int scrub_m68k_mri; /* The pseudo-op which switches in and out of MRI mode. See the comment in do_scrub_chars. */ static const char mri_pseudo[] = ".mri 0"; +#else +#define scrub_m68k_mri 0 +#endif #if defined TC_ARM && defined OBJ_ELF -/* The pseudo-op for which we need to special-case `@' characters. +/* The pseudo-op for which we need to special-case `@' characters. See the comment in do_scrub_chars. */ static const char symver_pseudo[] = ".symver"; static const char * symver_state; #endif +#ifdef TC_ARM +static char last_char; +#endif static char lex[256]; static const char symbol_chars[] = @@ -73,41 +82,45 @@ static const char symbol_chars[] = #ifdef DOUBLEBAR_PARALLEL #define LEX_IS_DOUBLEBAR_1ST 13 #endif +#define LEX_IS_PARALLEL_SEPARATOR 14 +#ifdef H_TICK_HEX +#define LEX_IS_H 15 +#endif #define IS_SYMBOL_COMPONENT(c) (lex[c] == LEX_IS_SYMBOL_COMPONENT) #define IS_WHITESPACE(c) (lex[c] == LEX_IS_WHITESPACE) #define IS_LINE_SEPARATOR(c) (lex[c] == LEX_IS_LINE_SEPARATOR) +#define IS_PARALLEL_SEPARATOR(c) (lex[c] == LEX_IS_PARALLEL_SEPARATOR) #define IS_COMMENT(c) (lex[c] == LEX_IS_COMMENT_START) #define IS_LINE_COMMENT(c) (lex[c] == LEX_IS_LINE_COMMENT_START) #define IS_NEWLINE(c) (lex[c] == LEX_IS_NEWLINE) -static int process_escape PARAMS ((int)); +static int process_escape (int); /* FIXME-soon: The entire lexer/parser thingy should be built statically at compile time rather than dynamically - each and every time the assembler is run. xoxorich. */ + each and every time the assembler is run. xoxorich. */ -void -do_scrub_begin (m68k_mri) - int m68k_mri; +void +do_scrub_begin (int m68k_mri ATTRIBUTE_UNUSED) { const char *p; int c; - scrub_m68k_mri = m68k_mri; - lex[' '] = LEX_IS_WHITESPACE; lex['\t'] = LEX_IS_WHITESPACE; lex['\r'] = LEX_IS_WHITESPACE; lex['\n'] = LEX_IS_NEWLINE; - lex[';'] = LEX_IS_LINE_SEPARATOR; lex[':'] = LEX_IS_COLON; +#ifdef TC_M68K + scrub_m68k_mri = m68k_mri; + if (! m68k_mri) +#endif { lex['"'] = LEX_IS_STRINGQUOTE; -#if ! defined (TC_HPPA) && ! defined (TC_I370) - /* I370 uses single-quotes to delimit integer, float constants */ +#if ! defined (TC_HPPA) lex['\''] = LEX_IS_ONECHAR_QUOTE; #endif @@ -122,9 +135,7 @@ do_scrub_begin (m68k_mri) /* Note that these override the previous defaults, e.g. if ';' is a comment char, then it isn't a line separator. */ for (p = symbol_chars; *p; ++p) - { - lex[(unsigned char) *p] = LEX_IS_SYMBOL_COMPONENT; - } /* declare symbol characters */ + lex[(unsigned char) *p] = LEX_IS_SYMBOL_COMPONENT; for (c = 128; c < 256; ++c) lex[c] = LEX_IS_SYMBOL_COMPONENT; @@ -144,36 +155,40 @@ do_scrub_begin (m68k_mri) #define tc_comment_chars comment_chars #endif for (p = tc_comment_chars; *p; p++) - { - lex[(unsigned char) *p] = LEX_IS_COMMENT_START; - } /* declare comment chars */ + lex[(unsigned char) *p] = LEX_IS_COMMENT_START; for (p = line_comment_chars; *p; p++) - { - lex[(unsigned char) *p] = LEX_IS_LINE_COMMENT_START; - } /* declare line comment chars */ + lex[(unsigned char) *p] = LEX_IS_LINE_COMMENT_START; - for (p = line_separator_chars; *p; p++) - { - lex[(unsigned char) *p] = LEX_IS_LINE_SEPARATOR; - } /* declare line separators */ +#ifndef tc_line_separator_chars +#define tc_line_separator_chars line_separator_chars +#endif + for (p = tc_line_separator_chars; *p; p++) + lex[(unsigned char) *p] = LEX_IS_LINE_SEPARATOR; + +#ifdef tc_parallel_separator_chars + /* This macro permits the processor to specify all characters which + separate parallel insns on the same line. */ + for (p = tc_parallel_separator_chars; *p; p++) + lex[(unsigned char) *p] = LEX_IS_PARALLEL_SEPARATOR; +#endif /* Only allow slash-star comments if slash is not in use. FIXME: This isn't right. We should always permit them. */ if (lex['/'] == 0) - { - lex['/'] = LEX_IS_TWOCHAR_COMMENT_1ST; - } + lex['/'] = LEX_IS_TWOCHAR_COMMENT_1ST; +#ifdef TC_M68K if (m68k_mri) { lex['\''] = LEX_IS_STRINGQUOTE; lex[';'] = LEX_IS_COMMENT_START; lex['*'] = LEX_IS_LINE_COMMENT_START; /* The MRI documentation says '!' is LEX_IS_COMMENT_START, but - then it can't be used in an expression. */ + then it can't be used in an expression. */ lex['!'] = LEX_IS_LINE_COMMENT_START; } +#endif #ifdef TC_V850 lex['-'] = LEX_IS_DOUBLEDASH_1ST; @@ -182,19 +197,27 @@ do_scrub_begin (m68k_mri) lex['|'] = LEX_IS_DOUBLEBAR_1ST; #endif #ifdef TC_D30V - /* must do this is we want VLIW instruction with "->" or "<-" */ + /* Must do this is we want VLIW instruction with "->" or "<-". */ lex['-'] = LEX_IS_SYMBOL_COMPONENT; #endif -} /* do_scrub_begin() */ -/* Saved state of the scrubber */ +#ifdef H_TICK_HEX + if (enable_h_tick_hex) + { + lex['h'] = LEX_IS_H; + lex['H'] = LEX_IS_H; + } +#endif +} + +/* Saved state of the scrubber. */ static int state; static int old_state; -static char *out_string; +static const char *out_string; static char out_buf[20]; static int add_newlines; static char *saved_input; -static int saved_input_len; +static size_t saved_input_len; static char input_buffer[32 * 1024]; static const char *mri_state; static char mri_last_ch; @@ -205,28 +228,33 @@ static char mri_last_ch; That's why we have to save it all. */ struct app_save - { - int state; - int old_state; - char * out_string; - char out_buf[sizeof (out_buf)]; - int add_newlines; - char * saved_input; - int saved_input_len; - int scrub_m68k_mri; - const char * mri_state; - char mri_last_ch; +{ + int state; + int old_state; + const char * out_string; + char out_buf[sizeof (out_buf)]; + int add_newlines; + char * saved_input; + size_t saved_input_len; +#ifdef TC_M68K + int scrub_m68k_mri; +#endif + const char * mri_state; + char mri_last_ch; #if defined TC_ARM && defined OBJ_ELF - const char * symver_state; + const char * symver_state; #endif - }; +#ifdef TC_ARM + char last_char; +#endif +}; char * -app_push () +app_push (void) { - register struct app_save *saved; + struct app_save *saved; - saved = (struct app_save *) xmalloc (sizeof (*saved)); + saved = XNEW (struct app_save); saved->state = state; saved->old_state = old_state; saved->out_string = out_string; @@ -236,32 +264,37 @@ app_push () saved->saved_input = NULL; else { - saved->saved_input = xmalloc (saved_input_len); + saved->saved_input = XNEWVEC (char, saved_input_len); memcpy (saved->saved_input, saved_input, saved_input_len); saved->saved_input_len = saved_input_len; } +#ifdef TC_M68K saved->scrub_m68k_mri = scrub_m68k_mri; +#endif saved->mri_state = mri_state; saved->mri_last_ch = mri_last_ch; #if defined TC_ARM && defined OBJ_ELF saved->symver_state = symver_state; #endif +#ifdef TC_ARM + saved->last_char = last_char; +#endif - /* do_scrub_begin() is not useful, just wastes time. */ + /* do_scrub_begin() is not useful, just wastes time. */ state = 0; saved_input = NULL; + add_newlines = 0; return (char *) saved; } -void -app_pop (arg) - char *arg; +void +app_pop (char *arg) { - register struct app_save *saved = (struct app_save *) arg; + struct app_save *saved = (struct app_save *) arg; - /* There is no do_scrub_end (). */ + /* There is no do_scrub_end (). */ state = saved->state; old_state = saved->old_state; out_string = saved->out_string; @@ -271,27 +304,32 @@ app_pop (arg) saved_input = NULL; else { - assert (saved->saved_input_len <= (int) (sizeof input_buffer)); + gas_assert (saved->saved_input_len <= sizeof (input_buffer)); memcpy (input_buffer, saved->saved_input, saved->saved_input_len); saved_input = input_buffer; saved_input_len = saved->saved_input_len; free (saved->saved_input); } +#ifdef TC_M68K scrub_m68k_mri = saved->scrub_m68k_mri; +#endif mri_state = saved->mri_state; mri_last_ch = saved->mri_last_ch; #if defined TC_ARM && defined OBJ_ELF symver_state = saved->symver_state; #endif +#ifdef TC_ARM + last_char = saved->last_char; +#endif free (arg); -} /* app_pop() */ +} /* @@ This assumes that \n &c are the same on host and target. This is not necessarily true. */ -static int -process_escape (ch) - int ch; + +static int +process_escape (int ch) { switch (ch) { @@ -325,45 +363,56 @@ process_escape (ch) machine, and saves its state so that it may return at any point. This is the way the old code used to work. */ -int -do_scrub_chars (get, tostart, tolen) - int (*get) PARAMS ((char *, int)); - char *tostart; - int tolen; +size_t +do_scrub_chars (size_t (*get) (char *, size_t), char *tostart, size_t tolen) { char *to = tostart; char *toend = tostart + tolen; char *from; char *fromend; - int fromlen; - register int ch, ch2 = 0; + size_t fromlen; + int ch, ch2 = 0; + /* Character that started the string we're working on. */ + static char quotechar; /*State 0: beginning of normal line 1: After first whitespace on line (flush more white) 2: After first non-white (opcode) on line (keep 1white) 3: after second white on line (into operands) (flush white) - 4: after putting out a .line, put out digits + 4: after putting out a .linefile, put out digits 5: parsing a string, then go to old-state 6: putting out \ escape in a "d string. - 7: After putting out a .appfile, put out string. - 8: After putting out a .appfile string, flush until newline. + 7: no longer used + 8: no longer used 9: After seeing symbol char in state 3 (keep 1white after symchar) 10: After seeing whitespace in state 9 (keep white before symchar) 11: After seeing a symbol character in state 0 (eg a label definition) -1: output string in out_string and go to the state in old_state -2: flush text until a '*' '/' is seen, then go to state old_state #ifdef TC_V850 - 12: After seeing a dash, looking for a second dash as a start of comment. + 12: After seeing a dash, looking for a second dash as a start + of comment. #endif #ifdef DOUBLEBAR_PARALLEL - 13: After seeing a vertical bar, looking for a second vertical bar as a parallel expression seperator. + 13: After seeing a vertical bar, looking for a second + vertical bar as a parallel expression separator. +#endif +#ifdef TC_PREDICATE_START_CHAR + 14: After seeing a predicate start character at state 0, looking + for a predicate end character as predicate. + 15: After seeing a predicate start character at state 1, looking + for a predicate end character as predicate. +#endif +#ifdef TC_Z80 + 16: After seeing an 'a' or an 'A' at the start of a symbol + 17: After seeing an 'f' or an 'F' in state 16 #endif */ /* I added states 9 and 10 because the MIPS ECOFF assembler uses constructs like ``.loc 1 20''. This was turning into ``.loc 120''. States 9 and 10 ensure that a space is never dropped in - between characters which could appear in a identifier. Ian + between characters which could appear in an identifier. Ian Taylor, ian@cygnus.com. I added state 11 so that something like "Lfoo add %r25,%r26,%r27" works @@ -400,13 +449,13 @@ do_scrub_chars (get, tostart, tolen) I don't want to make such a significant change to the assembler's memory usage. */ -#define PUT(pch) \ - do \ - { \ - *to++ = (pch); \ - if (to >= toend) \ - goto tofull; \ - } \ +#define PUT(pch) \ + do \ + { \ + *to++ = (pch); \ + if (to >= toend) \ + goto tofull; \ + } \ while (0) if (saved_input != NULL) @@ -426,8 +475,8 @@ do_scrub_chars (get, tostart, tolen) while (1) { /* The cases in this switch end with continue, in order to - branch back to the top of this while loop and generate the - next output character in the appropriate state. */ + branch back to the top of this while loop and generate the + next output character in the appropriate state. */ switch (state) { case -1: @@ -489,14 +538,10 @@ do_scrub_chars (get, tostart, tolen) ch = GET (); if (ch == '"') { - UNGET (ch); - if (scrub_m68k_mri) - out_string = "\n\tappfile "; - else - out_string = "\n\t.appfile "; - old_state = 7; - state = -1; - PUT (*out_string++); + quotechar = ch; + state = 5; + old_state = 3; + PUT (ch); } else { @@ -510,21 +555,18 @@ do_scrub_chars (get, tostart, tolen) case 5: /* We are going to copy everything up to a quote character, - with special handling for a backslash. We try to - optimize the copying in the simple case without using the - GET and PUT macros. */ + with special handling for a backslash. We try to + optimize the copying in the simple case without using the + GET and PUT macros. */ { char *s; - int len; + ptrdiff_t len; for (s = from; s < fromend; s++) { ch = *s; - /* This condition must be changed if the type of any - other character can be LEX_IS_STRINGQUOTE. */ if (ch == '\\' - || ch == '"' - || ch == '\'' + || ch == quotechar || ch == '\n') break; } @@ -536,34 +578,39 @@ do_scrub_chars (get, tostart, tolen) memcpy (to, from, len); to += len; from += len; + if (to >= toend) + goto tofull; } } ch = GET (); if (ch == EOF) { - as_warn (_("end of file in string: inserted '\"'")); + /* This buffer is here specifically so + that the UNGET below will work. */ + static char one_char_buf[1]; + + as_warn (_("end of file in string; '%c' inserted"), quotechar); state = old_state; + from = fromend = one_char_buf + 1; + fromlen = 1; UNGET ('\n'); - PUT ('"'); + PUT (quotechar); } - else if (lex[ch] == LEX_IS_STRINGQUOTE) + else if (ch == quotechar) { state = old_state; PUT (ch); } -#ifndef NO_STRING_ESCAPES - else if (ch == '\\') + else if (TC_STRING_ESCAPES && ch == '\\') { state = 6; PUT (ch); } -#endif else if (scrub_m68k_mri && ch == '\n') { /* Just quietly terminate the string. This permits lines like - bne label loop if we haven't reach end yet - */ + bne label loop if we haven't reach end yet. */ state = old_state; UNGET (ch); PUT ('\''); @@ -587,6 +634,11 @@ do_scrub_chars (get, tostart, tolen) PUT ('\\'); continue; + case EOF: + as_warn (_("end of file in string; '%c' inserted"), quotechar); + PUT (quotechar); + continue; + case '"': case '\\': case 'b': @@ -606,49 +658,95 @@ do_scrub_chars (get, tostart, tolen) case '6': case '7': break; -#if defined(IGNORE_NONSTANDARD_ESCAPES) | defined(ONLY_STANDARD_ESCAPES) - default: - as_warn (_("Unknown escape '\\%c' in string: Ignored"), ch); - break; -#else /* ONLY_STANDARD_ESCAPES */ + default: - /* Accept \x as x for any x */ +#ifdef ONLY_STANDARD_ESCAPES + as_warn (_("unknown escape '\\%c' in string; ignored"), ch); +#endif break; -#endif /* ONLY_STANDARD_ESCAPES */ - - case EOF: - as_warn (_("End of file in string: '\"' inserted")); - PUT ('"'); - continue; } PUT (ch); continue; - case 7: +#ifdef DOUBLEBAR_PARALLEL + case 13: ch = GET (); - state = 5; - old_state = 8; - if (ch == EOF) - goto fromeof; - PUT (ch); - continue; + if (ch != '|') + abort (); - case 8: - do - ch = GET (); - while (ch != '\n' && ch != EOF); + /* Reset back to state 1 and pretend that we are parsing a + line from just after the first white space. */ + state = 1; + PUT ('|'); +#ifdef TC_TIC6X + /* "||^" is used for SPMASKed instructions. */ + ch = GET (); if (ch == EOF) goto fromeof; - state = 0; - PUT (ch); + else if (ch == '^') + PUT ('^'); + else + UNGET (ch); +#endif continue; +#endif +#ifdef TC_Z80 + case 16: + /* We have seen an 'a' at the start of a symbol, look for an 'f'. */ + ch = GET (); + if (ch == 'f' || ch == 'F') + { + state = 17; + PUT (ch); + } + else + { + state = 9; + break; + } + /* Fall through. */ + case 17: + /* We have seen "af" at the start of a symbol, + a ' here is a part of that symbol. */ + ch = GET (); + state = 9; + if (ch == '\'') + /* Change to avoid warning about unclosed string. */ + PUT ('`'); + else if (ch != EOF) + UNGET (ch); + break; +#endif } - /* OK, we are somewhere in states 0 through 4 or 9 through 11 */ + /* OK, we are somewhere in states 0 through 4 or 9 through 11. */ /* flushchar: */ ch = GET (); +#ifdef TC_PREDICATE_START_CHAR + if (ch == TC_PREDICATE_START_CHAR && (state == 0 || state == 1)) + { + state += 14; + PUT (ch); + continue; + } + else if (state == 14 || state == 15) + { + if (ch == TC_PREDICATE_END_CHAR) + { + state -= 14; + PUT (ch); + ch = GET (); + } + else + { + PUT (ch); + continue; + } + } +#endif + recycle: #if defined TC_ARM && defined OBJ_ELF @@ -682,9 +780,9 @@ do_scrub_chars (get, tostart, tolen) #ifdef TC_M68K /* We want to have pseudo-ops which control whether we are in - MRI mode or not. Unfortunately, since m68k MRI mode affects - the scrubber, that means that we need a special purpose - recognizer here. */ + MRI mode or not. Unfortunately, since m68k MRI mode affects + the scrubber, that means that we need a special purpose + recognizer here. */ if (mri_state == NULL) { if ((state == 0 || state == 1) @@ -721,14 +819,14 @@ do_scrub_chars (get, tostart, tolen) else { /* We've read the entire pseudo-op. mips_last_ch is - either '0' or '1' indicating whether to enter or - leave MRI mode. */ + either '0' or '1' indicating whether to enter or + leave MRI mode. */ do_scrub_begin (mri_last_ch == '1'); mri_state = NULL; /* We continue handling the character as usual. The - main gas reader must also handle the .mri pseudo-op - to control expression parsing and the like. */ + main gas reader must also handle the .mri pseudo-op + to control expression parsing and the like. */ } } #endif @@ -766,23 +864,26 @@ do_scrub_chars (get, tostart, tolen) } #ifdef KEEP_WHITE_AROUND_COLON - if (lex[ch] == LEX_IS_COLON) - { - /* only keep this white if there's no white *after* the colon */ - ch2 = GET (); - UNGET (ch2); - if (!IS_WHITESPACE (ch2)) - { - state = 9; - UNGET (ch); - PUT (' '); - break; - } - } + if (lex[ch] == LEX_IS_COLON) + { + /* Only keep this white if there's no white *after* the + colon. */ + ch2 = GET (); + if (ch2 != EOF) + UNGET (ch2); + if (!IS_WHITESPACE (ch2)) + { + state = 9; + UNGET (ch); + PUT (' '); + break; + } + } #endif if (IS_COMMENT (ch) || ch == '/' - || IS_LINE_SEPARATOR (ch)) + || IS_LINE_SEPARATOR (ch) + || IS_PARALLEL_SEPARATOR (ch)) { if (scrub_m68k_mri) { @@ -810,9 +911,6 @@ do_scrub_chars (get, tostart, tolen) switch (state) { - case 0: - state++; - goto recycle; /* Punted leading sp */ case 1: /* We can arrive here if we leave a leading whitespace character at the beginning of a line. */ @@ -829,7 +927,11 @@ do_scrub_chars (get, tostart, tolen) PUT (' '); break; case 3: +#ifndef TC_KEEP_OPERAND_SPACES + /* For TI C6X, we keep these spaces as they may separate + functional unit specifiers from operands. */ if (scrub_m68k_mri) +#endif { /* In MRI mode, we keep these spaces. */ UNGET (ch); @@ -839,7 +941,9 @@ do_scrub_chars (get, tostart, tolen) goto recycle; /* Sp in operands */ case 9: case 10: +#ifndef TC_KEEP_OPERAND_SPACES if (scrub_m68k_mri) +#endif { /* In MRI mode, we keep these spaces. */ state = 3; @@ -850,18 +954,14 @@ do_scrub_chars (get, tostart, tolen) state = 10; /* Sp after symbol char */ goto recycle; case 11: - if (flag_m68k_mri -#ifdef LABELS_WITHOUT_COLONS - || 1 -#endif - ) + if (LABELS_WITHOUT_COLONS || flag_m68k_mri) state = 1; else { /* We know that ch is not ':', since we tested that - case above. Therefore this is not a label, so it - must be the opcode, and we've just seen the - whitespace after it. */ + case above. Therefore this is not a label, so it + must be the opcode, and we've just seen the + whitespace after it. */ state = 3; } UNGET (ch); @@ -893,7 +993,7 @@ do_scrub_chars (get, tostart, tolen) break; /* This UNGET will ensure that we count newlines - correctly. */ + correctly. */ UNGET (ch2); } @@ -903,6 +1003,21 @@ do_scrub_chars (get, tostart, tolen) ch = ' '; goto recycle; } +#ifdef DOUBLESLASH_LINE_COMMENTS + else if (ch2 == '/') + { + do + { + ch = GET (); + } + while (ch != EOF && !IS_NEWLINE (ch)); + if (ch == EOF) + as_warn ("end of file in comment; newline inserted"); + state = 0; + PUT ('\n'); + break; + } +#endif else { if (ch2 != EOF) @@ -914,15 +1029,16 @@ do_scrub_chars (get, tostart, tolen) break; case LEX_IS_STRINGQUOTE: + quotechar = ch; if (state == 10) { - /* Preserve the whitespace in foo "bar" */ + /* Preserve the whitespace in foo "bar". */ UNGET (ch); state = 3; PUT (' '); /* PUT didn't jump out. We could just break, but we - know what will happen, so optimize a bit. */ + know what will happen, so optimize a bit. */ ch = GET (); old_state = 3; } @@ -934,11 +1050,20 @@ do_scrub_chars (get, tostart, tolen) PUT (ch); break; -#ifndef IEEE_STYLE case LEX_IS_ONECHAR_QUOTE: +#ifdef H_TICK_HEX + if (state == 9 && enable_h_tick_hex) + { + char c; + + c = GET (); + as_warn ("'%c found after symbol", c); + UNGET (c); + } +#endif if (state == 10) { - /* Preserve the whitespace in foo 'b' */ + /* Preserve the whitespace in foo 'b'. */ UNGET (ch); state = 3; PUT (' '); @@ -967,7 +1092,7 @@ do_scrub_chars (get, tostart, tolen) if ((ch = GET ()) != '\'') { #ifdef REQUIRE_CHAR_CLOSE_QUOTE - as_warn (_("Missing close quote: (assumed)")); + as_warn (_("missing close quote; (assumed)")); #else if (ch != EOF) UNGET (ch); @@ -986,11 +1111,10 @@ do_scrub_chars (get, tostart, tolen) out_string = out_buf; PUT (*out_string++); break; -#endif case LEX_IS_COLON: #ifdef KEEP_WHITE_AROUND_COLON - state = 9; + state = 9; #else if (state == 9 || state == 10) state = 3; @@ -1007,50 +1131,56 @@ do_scrub_chars (get, tostart, tolen) --add_newlines; UNGET (ch); } - /* fall thru into... */ + /* Fall through. */ case LEX_IS_LINE_SEPARATOR: state = 0; PUT (ch); break; + case LEX_IS_PARALLEL_SEPARATOR: + state = 1; + PUT (ch); + break; + #ifdef TC_V850 case LEX_IS_DOUBLEDASH_1ST: - ch2 = GET(); + ch2 = GET (); if (ch2 != '-') { - UNGET (ch2); + if (ch2 != EOF) + UNGET (ch2); goto de_fault; } - /* read and skip to end of line */ + /* Read and skip to end of line. */ do { ch = GET (); } while (ch != EOF && ch != '\n'); + if (ch == EOF) - { - as_warn (_("end of file in comment; newline inserted")); - } + as_warn (_("end of file in comment; newline inserted")); + state = 0; PUT ('\n'); break; -#endif +#endif #ifdef DOUBLEBAR_PARALLEL case LEX_IS_DOUBLEBAR_1ST: - ch2 = GET(); + ch2 = GET (); + if (ch2 != EOF) + UNGET (ch2); if (ch2 != '|') - { - UNGET (ch2); - goto de_fault; - } - /* Reset back to state 1 and pretend that we are parsing a line from - just after the first white space. */ - state = 1; - PUT ('|'); + goto de_fault; + + /* Handle '||' in two states as invoking PUT twice might + result in the first one jumping out of this loop. We'd + then lose track of the state and one '|' char. */ + state = 13; PUT ('|'); break; -#endif +#endif case LEX_IS_LINE_COMMENT_START: /* FIXME-someday: The two character comment stuff was badly thought out. On i386, we want '/' as line comment start @@ -1065,11 +1195,11 @@ do_scrub_chars (get, tostart, tolen) state = -2; break; } - else + else if (ch2 != EOF) { UNGET (ch2); } - } /* bad hack */ + } if (state == 0 || state == 1) /* Only comment at start of line. */ { @@ -1082,31 +1212,40 @@ do_scrub_chars (get, tostart, tolen) ch = GET (); } while (ch != EOF && IS_WHITESPACE (ch)); + if (ch == EOF) { as_warn (_("end of file in comment; newline inserted")); PUT ('\n'); break; } + if (ch < '0' || ch > '9' || state != 0 || startch != '#') { /* Not a cpp line. */ while (ch != EOF && !IS_NEWLINE (ch)) ch = GET (); if (ch == EOF) - as_warn (_("EOF in Comment: Newline inserted")); + { + as_warn (_("end of file in comment; newline inserted")); + PUT ('\n'); + } + else /* IS_NEWLINE (ch) */ + { + /* To process non-zero add_newlines. */ + UNGET (ch); + } state = 0; - PUT ('\n'); break; } - /* Loks like `# 123 "filename"' from cpp. */ + /* Looks like `# 123 "filename"' from cpp. */ UNGET (ch); old_state = 4; state = -1; if (scrub_m68k_mri) - out_string = "\tappline "; + out_string = "\tlinefile "; else - out_string = "\t.appline "; + out_string = "\t.linefile "; PUT (*out_string++); break; } @@ -1116,12 +1255,14 @@ do_scrub_chars (get, tostart, tolen) Trap is the only short insn that has a first operand that is neither register nor label. We must prevent exef0f ||trap #1 to degenerate to exef0f ||trap#1 . - We can't make '#' LEX_IS_SYMBOL_COMPONENT because it is already - LEX_IS_LINE_COMMENT_START. However, it is the only character in - line_comment_chars for d10v, hence we can recognize it as such. */ + We can't make '#' LEX_IS_SYMBOL_COMPONENT because it is + already LEX_IS_LINE_COMMENT_START. However, it is the + only character in line_comment_chars for d10v, hence we + can recognize it as such. */ /* An alternative approach would be to reset the state to 1 when we see '||', '<'- or '->', but that seems to be overkill. */ - if (state == 10) PUT (' '); + if (state == 10) + PUT (' '); #endif /* We have a line comment character which is not at the start of a line. If this is also a normal comment @@ -1141,12 +1282,25 @@ do_scrub_chars (get, tostart, tolen) #if defined TC_ARM && defined OBJ_ELF /* On the ARM, `@' is the comment character. Unfortunately this is also a special character in ELF .symver - directives (and .type, though we deal with those another way). So - we check if this line is such a directive, and treat the character - as default if so. This is a hack. */ + directives (and .type, though we deal with those another way). + So we check if this line is such a directive, and treat + the character as default if so. This is a hack. */ if ((symver_state != NULL) && (*symver_state == 0)) goto de_fault; #endif + +#ifdef TC_ARM + /* For the ARM, care is needed not to damage occurrences of \@ + by stripping the @ onwards. Yuck. */ + if ((to > tostart ? to[-1] : last_char) == '\\') + /* Do not treat the @ as a start-of-comment. */ + goto de_fault; +#endif + +#ifdef WARN_COMMENTS + if (!found_comment) + found_comment_file = as_where (&found_comment); +#endif do { ch = GET (); @@ -1158,6 +1312,26 @@ do_scrub_chars (get, tostart, tolen) PUT ('\n'); break; +#ifdef H_TICK_HEX + case LEX_IS_H: + /* Look for strings like H'[0-9A-Fa-f] and if found, replace + the H' with 0x to make them gas-style hex characters. */ + if (enable_h_tick_hex) + { + char quot; + + quot = GET (); + if (quot == '\'') + { + UNGET ('x'); + ch = '0'; + } + else + UNGET (quot); + } +#endif + /* Fall through. */ + case LEX_IS_SYMBOL_COMPONENT: if (state == 10) { @@ -1170,11 +1344,36 @@ do_scrub_chars (get, tostart, tolen) break; } +#ifdef TC_Z80 + /* "af'" is a symbol containing '\''. */ + if (state == 3 && (ch == 'a' || ch == 'A')) + { + state = 16; + PUT (ch); + ch = GET (); + if (ch == 'f' || ch == 'F') + { + state = 17; + PUT (ch); + break; + } + else + { + state = 9; + if (ch == EOF || !IS_SYMBOL_COMPONENT (ch)) + { + if (ch != EOF) + UNGET (ch); + break; + } + } + } +#endif if (state == 3) state = 9; /* This is a common case. Quickly copy CH and all the - following symbol component or normal characters. */ + following symbol component or normal characters. */ if (to + 1 < toend && mri_state == NULL #if defined TC_ARM && defined OBJ_ELF @@ -1183,50 +1382,37 @@ do_scrub_chars (get, tostart, tolen) ) { char *s; - int len; + ptrdiff_t len; for (s = from; s < fromend; s++) { int type; - ch2 = * (unsigned char *) s; + ch2 = *(unsigned char *) s; type = lex[ch2]; if (type != 0 && type != LEX_IS_SYMBOL_COMPONENT) break; } + if (s > from) - { - /* Handle the last character normally, for - simplicity. */ - --s; - } + /* Handle the last character normally, for + simplicity. */ + --s; + len = s - from; + if (len > (toend - to) - 1) len = (toend - to) - 1; + if (len > 0) { PUT (ch); - if (len > 8) - { - memcpy (to, from, len); - to += len; - from += len; - } - else - { - switch (len) - { - case 8: *to++ = *from++; - case 7: *to++ = *from++; - case 6: *to++ = *from++; - case 5: *to++ = *from++; - case 4: *to++ = *from++; - case 3: *to++ = *from++; - case 2: *to++ = *from++; - case 1: *to++ = *from++; - } - } + memcpy (to, from, len); + to += len; + from += len; + if (to >= toend) + goto tofull; ch = GET (); } } @@ -1237,15 +1423,15 @@ do_scrub_chars (get, tostart, tolen) /* Some relatively `normal' character. */ if (state == 0) { - state = 11; /* Now seeing label definition */ + state = 11; /* Now seeing label definition. */ } else if (state == 1) { - state = 2; /* Ditto */ + state = 2; /* Ditto. */ } else if (state == 9) { - if (lex[ch] != LEX_IS_SYMBOL_COMPONENT) + if (!IS_SYMBOL_COMPONENT (ch)) state = 3; } else if (state == 10) @@ -1264,7 +1450,15 @@ do_scrub_chars (get, tostart, tolen) the space. We don't have enough information to make the right choice, so here we are making the choice which is more likely to be correct. */ - PUT (' '); + if (to + 1 >= toend) + { + /* If we're near the end of the buffer, save the + character for the next time round. Otherwise + we'll lose our state. */ + UNGET (ch); + goto tofull; + } + *to++ = ' '; } state = 3; @@ -1278,6 +1472,10 @@ do_scrub_chars (get, tostart, tolen) fromeof: /* We have reached the end of the input. */ +#ifdef TC_ARM + if (to > tostart) + last_char = to[-1]; +#endif return to - tostart; tofull: @@ -1291,7 +1489,9 @@ do_scrub_chars (get, tostart, tolen) else saved_input = NULL; +#ifdef TC_ARM + if (to > tostart) + last_char = to[-1]; +#endif return to - tostart; } - -/* end of app.c */