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Diffstat (limited to 'gas/app.c')
| -rw-r--r-- | gas/app.c | 1255 |
1 files changed, 0 insertions, 1255 deletions
diff --git a/gas/app.c b/gas/app.c deleted file mode 100644 index 2a8df3ace5e..00000000000 --- a/gas/app.c +++ /dev/null @@ -1,1255 +0,0 @@ -/* This is the Assembler Pre-Processor - Copyright (C) 1987, 90, 91, 92, 93, 94, 95, 96, 97, 98, 1999 - 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, 59 Temple Place - Suite 330, Boston, MA - 02111-1307, 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 - # <number> <filename> <garbage> into a .line <number>\n.file <filename> - pair. This needs better error-handling. */ - -#include <stdio.h> -#include "as.h" /* For BAD_CASE() only */ - -#if (__STDC__ != 1) -#ifndef const -#define const /* empty */ -#endif -#endif - -/* 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. */ -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"; - -#if defined TC_ARM && defined OBJ_ELF -/* 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 - -static char lex[256]; -static const char symbol_chars[] = -"$._ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"; - -#define LEX_IS_SYMBOL_COMPONENT 1 -#define LEX_IS_WHITESPACE 2 -#define LEX_IS_LINE_SEPARATOR 3 -#define LEX_IS_COMMENT_START 4 -#define LEX_IS_LINE_COMMENT_START 5 -#define LEX_IS_TWOCHAR_COMMENT_1ST 6 -#define LEX_IS_STRINGQUOTE 8 -#define LEX_IS_COLON 9 -#define LEX_IS_NEWLINE 10 -#define LEX_IS_ONECHAR_QUOTE 11 -#ifdef TC_V850 -#define LEX_IS_DOUBLEDASH_1ST 12 -#endif -#ifdef TC_M32R -#define LEX_IS_DOUBLEBAR_1ST 13 -#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_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)); - -/* 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. */ - -void -do_scrub_begin (m68k_mri) - int m68k_mri; -{ - 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; - - if (! m68k_mri) - { - lex['"'] = LEX_IS_STRINGQUOTE; - -#ifndef TC_HPPA - lex['\''] = LEX_IS_ONECHAR_QUOTE; -#endif - -#ifdef SINGLE_QUOTE_STRINGS - lex['\''] = LEX_IS_STRINGQUOTE; -#endif - } - - /* Note: if any other character can be LEX_IS_STRINGQUOTE, the loop - in state 5 of do_scrub_chars must be changed. */ - - /* 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 */ - - for (c = 128; c < 256; ++c) - lex[c] = LEX_IS_SYMBOL_COMPONENT; - -#ifdef tc_symbol_chars - /* This macro permits the processor to specify all characters which - may appears in an operand. This will prevent the scrubber from - discarding meaningful whitespace in certain cases. The i386 - backend uses this to support prefixes, which can confuse the - scrubber as to whether it is parsing operands or opcodes. */ - for (p = tc_symbol_chars; *p; ++p) - lex[(unsigned char) *p] = LEX_IS_SYMBOL_COMPONENT; -#endif - - /* The m68k backend wants to be able to change comment_chars. */ -#ifndef tc_comment_chars -#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 */ - - for (p = line_comment_chars; *p; p++) - { - lex[(unsigned char) *p] = LEX_IS_LINE_COMMENT_START; - } /* declare line comment chars */ - - for (p = line_separator_chars; *p; p++) - { - lex[(unsigned char) *p] = LEX_IS_LINE_SEPARATOR; - } /* declare line separators */ - - /* 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; - } - - 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. */ - lex['!'] = LEX_IS_LINE_COMMENT_START; - } - -#ifdef TC_V850 - lex['-'] = LEX_IS_DOUBLEDASH_1ST; -#endif -#ifdef TC_M32R - lex['|'] = LEX_IS_DOUBLEBAR_1ST; -#endif -#ifdef TC_D30V - /* must do this is we want VLIW instruction with "->" or "<-" */ - lex['-'] = LEX_IS_SYMBOL_COMPONENT; -#endif -} /* do_scrub_begin() */ - -/* Saved state of the scrubber */ -static int state; -static int old_state; -static char *out_string; -static char out_buf[20]; -static int add_newlines; -static char *saved_input; -static int saved_input_len; -static const char *mri_state; -static char mri_last_ch; - -/* Data structure for saving the state of app across #include's. Note that - app is called asynchronously to the parsing of the .include's, so our - state at the time .include is interpreted is completely unrelated. - 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; -#if defined TC_ARM && defined OBJ_ELF - const char * symver_state; -#endif - }; - -char * -app_push () -{ - register struct app_save *saved; - - saved = (struct app_save *) xmalloc (sizeof (*saved)); - saved->state = state; - saved->old_state = old_state; - saved->out_string = out_string; - memcpy (saved->out_buf, out_buf, sizeof (out_buf)); - saved->add_newlines = add_newlines; - saved->saved_input = saved_input; - saved->saved_input_len = saved_input_len; - saved->scrub_m68k_mri = scrub_m68k_mri; - 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 - - /* do_scrub_begin() is not useful, just wastes time. */ - - state = 0; - saved_input = NULL; - - return (char *) saved; -} - -void -app_pop (arg) - char *arg; -{ - register struct app_save *saved = (struct app_save *) arg; - - /* There is no do_scrub_end (). */ - state = saved->state; - old_state = saved->old_state; - out_string = saved->out_string; - memcpy (out_buf, saved->out_buf, sizeof (out_buf)); - add_newlines = saved->add_newlines; - saved_input = saved->saved_input; - saved_input_len = saved->saved_input_len; - scrub_m68k_mri = saved->scrub_m68k_mri; - 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 - - 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; -{ - switch (ch) - { - case 'b': - return '\b'; - case 'f': - return '\f'; - case 'n': - return '\n'; - case 'r': - return '\r'; - case 't': - return '\t'; - case '\'': - return '\''; - case '"': - return '\"'; - default: - return ch; - } -} - -/* This function is called to process input characters. The GET - parameter is used to retrieve more input characters. GET should - set its parameter to point to a buffer, and return the length of - the buffer; it should return 0 at end of file. The scrubbed output - characters are put into the buffer starting at TOSTART; the TOSTART - buffer is TOLEN bytes in length. The function returns the number - of scrubbed characters put into TOSTART. This will be TOLEN unless - end of file was seen. This function is arranged as a state - 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 **)); - char *tostart; - int tolen; -{ - char *to = tostart; - char *toend = tostart + tolen; - char *from; - char *fromend; - int fromlen; - register int ch, ch2 = 0; - - /*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 - 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. - 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. -#endif -#ifdef TC_M32R - 13: After seeing a vertical bar, looking for a second vertical bar as a parallel expression seperator. -#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 - Taylor, ian@cygnus.com. - - I added state 11 so that something like "Lfoo add %r25,%r26,%r27" works - correctly on the PA (and any other target where colons are optional). - Jeff Law, law@cs.utah.edu. - - I added state 13 so that something like "cmp r1, r2 || trap #1" does not - get squashed into "cmp r1,r2||trap#1", with the all important space - between the 'trap' and the '#1' being eliminated. nickc@cygnus.com */ - - /* This macro gets the next input character. */ - -#define GET() \ - (from < fromend \ - ? * (unsigned char *) (from++) \ - : ((saved_input != NULL \ - ? (free (saved_input), \ - saved_input = NULL, \ - 0) \ - : 0), \ - fromlen = (*get) (&from), \ - fromend = from + fromlen, \ - (fromlen == 0 \ - ? EOF \ - : * (unsigned char *) (from++)))) - - /* This macro pushes a character back on the input stream. */ - -#define UNGET(uch) (*--from = (uch)) - - /* This macro puts a character into the output buffer. If this - character fills the output buffer, this macro jumps to the label - TOFULL. We use this rather ugly approach because we need to - handle two different termination conditions: EOF on the input - stream, and a full output buffer. It would be simpler if we - always read in the entire input stream before processing it, but - 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; \ - } \ - while (0) - - if (saved_input != NULL) - { - from = saved_input; - fromend = from + saved_input_len; - } - else - { - fromlen = (*get) (&from); - if (fromlen == 0) - return 0; - fromend = from + fromlen; - } - - 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. */ - switch (state) - { - case -1: - ch = *out_string++; - if (*out_string == '\0') - { - state = old_state; - old_state = 3; - } - PUT (ch); - continue; - - case -2: - for (;;) - { - do - { - ch = GET (); - - if (ch == EOF) - { - as_warn (_("end of file in comment")); - goto fromeof; - } - - if (ch == '\n') - PUT ('\n'); - } - while (ch != '*'); - - while ((ch = GET ()) == '*') - ; - - if (ch == EOF) - { - as_warn (_("end of file in comment")); - goto fromeof; - } - - if (ch == '/') - break; - - UNGET (ch); - } - - state = old_state; - UNGET (' '); - continue; - - case 4: - ch = GET (); - if (ch == EOF) - goto fromeof; - else if (ch >= '0' && ch <= '9') - PUT (ch); - else - { - while (ch != EOF && IS_WHITESPACE (ch)) - 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++); - } - else - { - while (ch != EOF && ch != '\n') - ch = GET (); - state = 0; - PUT (ch); - } - } - continue; - - 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. */ - { - char *s; - int 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 == '\n') - break; - } - len = s - from; - if (len > toend - to) - len = toend - to; - if (len > 0) - { - memcpy (to, from, len); - to += len; - from += len; - } - } - - ch = GET (); - if (ch == EOF) - { - as_warn (_("end of file in string: inserted '\"'")); - state = old_state; - UNGET ('\n'); - PUT ('"'); - } - else if (lex[ch] == LEX_IS_STRINGQUOTE) - { - state = old_state; - PUT (ch); - } -#ifndef NO_STRING_ESCAPES - else if (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 - */ - state = old_state; - UNGET (ch); - PUT ('\''); - } - else - { - PUT (ch); - } - continue; - - case 6: - state = 5; - ch = GET (); - switch (ch) - { - /* Handle strings broken across lines, by turning '\n' into - '\\' and 'n'. */ - case '\n': - UNGET ('n'); - add_newlines++; - PUT ('\\'); - continue; - - case '"': - case '\\': - case 'b': - case 'f': - case 'n': - case 'r': - case 't': - case 'v': - case 'x': - case 'X': - case '0': - case '1': - case '2': - case '3': - case '4': - case '5': - 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 */ - break; -#endif /* ONLY_STANDARD_ESCAPES */ - - case EOF: - as_warn (_("End of file in string: '\"' inserted")); - PUT ('"'); - continue; - } - PUT (ch); - continue; - - case 7: - ch = GET (); - state = 5; - old_state = 8; - if (ch == EOF) - goto fromeof; - PUT (ch); - continue; - - case 8: - do - ch = GET (); - while (ch != '\n' && ch != EOF); - if (ch == EOF) - goto fromeof; - state = 0; - PUT (ch); - continue; - } - - /* OK, we are somewhere in states 0 through 4 or 9 through 11 */ - - /* flushchar: */ - ch = GET (); - - recycle: - -#if defined TC_ARM && defined OBJ_ELF - /* We need to watch out for .symver directives. See the comment later - in this function. */ - if (symver_state == NULL) - { - if ((state == 0 || state == 1) && ch == symver_pseudo[0]) - symver_state = symver_pseudo + 1; - } - else - { - /* We advance to the next state if we find the right - character. */ - if (ch != '\0' && (*symver_state == ch)) - ++symver_state; - else if (*symver_state != '\0') - /* We did not get the expected character, or we didn't - get a valid terminating character after seeing the - entire pseudo-op, so we must go back to the beginning. */ - symver_state = NULL; - else - { - /* We've read the entire pseudo-op. If this is the end - of the line, go back to the beginning. */ - if (IS_NEWLINE (ch)) - symver_state = NULL; - } - } -#endif /* TC_ARM && OBJ_ELF */ - -#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. */ - if (mri_state == NULL) - { - if ((state == 0 || state == 1) - && ch == mri_pseudo[0]) - mri_state = mri_pseudo + 1; - } - else - { - /* We advance to the next state if we find the right - character, or if we need a space character and we get any - whitespace character, or if we need a '0' and we get a - '1' (this is so that we only need one state to handle - ``.mri 0'' and ``.mri 1''). */ - if (ch != '\0' - && (*mri_state == ch - || (*mri_state == ' ' - && lex[ch] == LEX_IS_WHITESPACE) - || (*mri_state == '0' - && ch == '1'))) - { - mri_last_ch = ch; - ++mri_state; - } - else if (*mri_state != '\0' - || (lex[ch] != LEX_IS_WHITESPACE - && lex[ch] != LEX_IS_NEWLINE)) - { - /* We did not get the expected character, or we didn't - get a valid terminating character after seeing the - entire pseudo-op, so we must go back to the - beginning. */ - mri_state = NULL; - } - else - { - /* We've read the entire pseudo-op. mips_last_ch is - 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. */ - } - } -#endif - - if (ch == EOF) - { - if (state != 0) - { - as_warn (_("end of file not at end of a line; newline inserted")); - state = 0; - PUT ('\n'); - } - goto fromeof; - } - - switch (lex[ch]) - { - case LEX_IS_WHITESPACE: - do - { - ch = GET (); - } - while (ch != EOF && IS_WHITESPACE (ch)); - if (ch == EOF) - goto fromeof; - - if (state == 0) - { - /* Preserve a single whitespace character at the - beginning of a line. */ - state = 1; - UNGET (ch); - PUT (' '); - break; - } - - if (IS_COMMENT (ch) - || ch == '/' - || IS_LINE_SEPARATOR (ch)) - { - if (scrub_m68k_mri) - { - /* In MRI mode, we keep these spaces. */ - UNGET (ch); - PUT (' '); - break; - } - goto recycle; - } - - /* If we're in state 2 or 11, we've seen a non-white - character followed by whitespace. If the next character - is ':', this is whitespace after a label name which we - normally must ignore. In MRI mode, though, spaces are - not permitted between the label and the colon. */ - if ((state == 2 || state == 11) - && lex[ch] == LEX_IS_COLON - && ! scrub_m68k_mri) - { - state = 1; - PUT (ch); - break; - } - - 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. */ - goto recycle; - case 2: - state = 3; - if (to + 1 < toend) - { - /* Optimize common case by skipping UNGET/GET. */ - PUT (' '); /* Sp after opco */ - goto recycle; - } - UNGET (ch); - PUT (' '); - break; - case 3: - if (scrub_m68k_mri) - { - /* In MRI mode, we keep these spaces. */ - UNGET (ch); - PUT (' '); - break; - } - goto recycle; /* Sp in operands */ - case 9: - case 10: - if (scrub_m68k_mri) - { - /* In MRI mode, we keep these spaces. */ - state = 3; - UNGET (ch); - PUT (' '); - break; - } - state = 10; /* Sp after symbol char */ - goto recycle; - case 11: - if (flag_m68k_mri -#ifdef LABELS_WITHOUT_COLONS - || 1 -#endif - ) - 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. */ - state = 3; - } - UNGET (ch); - PUT (' '); /* Sp after label definition. */ - break; - default: - BAD_CASE (state); - } - break; - - case LEX_IS_TWOCHAR_COMMENT_1ST: - ch2 = GET (); - if (ch2 == '*') - { - for (;;) - { - do - { - ch2 = GET (); - if (ch2 != EOF && IS_NEWLINE (ch2)) - add_newlines++; - } - while (ch2 != EOF && ch2 != '*'); - - while (ch2 == '*') - ch2 = GET (); - - if (ch2 == EOF || ch2 == '/') - break; - - /* This UNGET will ensure that we count newlines - correctly. */ - UNGET (ch2); - } - - if (ch2 == EOF) - as_warn (_("end of file in multiline comment")); - - ch = ' '; - goto recycle; - } - else - { - if (ch2 != EOF) - UNGET (ch2); - if (state == 9 || state == 10) - state = 3; - PUT (ch); - } - break; - - case LEX_IS_STRINGQUOTE: - if (state == 10) - { - /* 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. */ - ch = GET (); - old_state = 3; - } - else if (state == 9) - old_state = 3; - else - old_state = state; - state = 5; - PUT (ch); - break; - -#ifndef IEEE_STYLE - case LEX_IS_ONECHAR_QUOTE: - if (state == 10) - { - /* Preserve the whitespace in foo 'b' */ - UNGET (ch); - state = 3; - PUT (' '); - break; - } - ch = GET (); - if (ch == EOF) - { - as_warn (_("end of file after a one-character quote; \\0 inserted")); - ch = 0; - } - if (ch == '\\') - { - ch = GET (); - if (ch == EOF) - { - as_warn (_("end of file in escape character")); - ch = '\\'; - } - else - ch = process_escape (ch); - } - sprintf (out_buf, "%d", (int) (unsigned char) ch); - - /* None of these 'x constants for us. We want 'x'. */ - if ((ch = GET ()) != '\'') - { -#ifdef REQUIRE_CHAR_CLOSE_QUOTE - as_warn (_("Missing close quote: (assumed)")); -#else - if (ch != EOF) - UNGET (ch); -#endif - } - if (strlen (out_buf) == 1) - { - PUT (out_buf[0]); - break; - } - if (state == 9) - old_state = 3; - else - old_state = state; - state = -1; - out_string = out_buf; - PUT (*out_string++); - break; -#endif - - case LEX_IS_COLON: - if (state == 9 || state == 10) - state = 3; - else if (state != 3) - state = 1; - PUT (ch); - break; - - case LEX_IS_NEWLINE: - /* Roll out a bunch of newlines from inside comments, etc. */ - if (add_newlines) - { - --add_newlines; - UNGET (ch); - } - /* fall thru into... */ - - case LEX_IS_LINE_SEPARATOR: - state = 0; - PUT (ch); - break; - -#ifdef TC_V850 - case LEX_IS_DOUBLEDASH_1ST: - ch2 = GET(); - if (ch2 != '-') - { - UNGET (ch2); - goto de_fault; - } - /* 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")); - } - state = 0; - PUT ('\n'); - break; -#endif -#ifdef TC_M32R - case LEX_IS_DOUBLEBAR_1ST: - ch2 = GET(); - 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 ('|'); - PUT ('|'); - break; -#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 - AND we want C style comments. hence this hack. The - whole lexical process should be reworked. xoxorich. */ - if (ch == '/') - { - ch2 = GET (); - if (ch2 == '*') - { - old_state = 3; - state = -2; - break; - } - else - { - UNGET (ch2); - } - } /* bad hack */ - - if (state == 0 || state == 1) /* Only comment at start of line. */ - { - int startch; - - startch = ch; - - do - { - 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")); - state = 0; - PUT ('\n'); - break; - } - /* Loks like `# 123 "filename"' from cpp. */ - UNGET (ch); - old_state = 4; - state = -1; - if (scrub_m68k_mri) - out_string = "\tappline "; - else - out_string = "\t.appline "; - PUT (*out_string++); - break; - } - -#ifdef TC_D10V - /* All insns end in a char for which LEX_IS_SYMBOL_COMPONENT is true. - 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. */ - /* 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 (' '); -#endif - /* We have a line comment character which is not at the - start of a line. If this is also a normal comment - character, fall through. Otherwise treat it as a default - character. */ - if (strchr (tc_comment_chars, ch) == NULL - && (! scrub_m68k_mri - || (ch != '!' && ch != '*'))) - goto de_fault; - if (scrub_m68k_mri - && (ch == '!' || ch == '*' || ch == '#') - && state != 1 - && state != 10) - goto de_fault; - /* Fall through. */ - case LEX_IS_COMMENT_START: -#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. */ - if ((symver_state != NULL) && (*symver_state == 0)) - goto de_fault; -#endif - 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; - - case LEX_IS_SYMBOL_COMPONENT: - if (state == 10) - { - /* This is a symbol character following another symbol - character, with whitespace in between. We skipped - the whitespace earlier, so output it now. */ - UNGET (ch); - state = 3; - PUT (' '); - break; - } - - if (state == 3) - state = 9; - - /* This is a common case. Quickly copy CH and all the - following symbol component or normal characters. */ - if (to + 1 < toend - && mri_state == NULL -#if defined TC_ARM && defined OBJ_ELF - && symver_state == NULL -#endif - ) - { - char *s; - int len; - - for (s = from; s < fromend; s++) - { - int type; - - 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; - } - 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++; - } - } - ch = GET (); - } - } - - /* Fall through. */ - default: - de_fault: - /* Some relatively `normal' character. */ - if (state == 0) - { - state = 11; /* Now seeing label definition */ - } - else if (state == 1) - { - state = 2; /* Ditto */ - } - else if (state == 9) - { - if (lex[ch] != LEX_IS_SYMBOL_COMPONENT) - state = 3; - } - else if (state == 10) - { - state = 3; - } - PUT (ch); - break; - } - } - - /*NOTREACHED*/ - - fromeof: - /* We have reached the end of the input. */ - return to - tostart; - - tofull: - /* The output buffer is full. Save any input we have not yet - processed. */ - if (fromend > from) - { - char *save; - - save = (char *) xmalloc (fromend - from); - memcpy (save, from, fromend - from); - if (saved_input != NULL) - free (saved_input); - saved_input = save; - saved_input_len = fromend - from; - } - else - { - if (saved_input != NULL) - { - free (saved_input); - saved_input = NULL; - } - } - return to - tostart; -} - -/* end of app.c */ |