diff options
Diffstat (limited to 'gas/read.c')
| -rw-r--r-- | gas/read.c | 160 |
1 files changed, 81 insertions, 79 deletions
@@ -741,7 +741,8 @@ single instruction is %u bytes long but .bundle_align_mode limit is %u"), void read_a_source_file (char *name) { - char c; + char nul_char; + char next_char; char *s; /* String of symbol, '\0' appended. */ int temp; pseudo_typeS *pop; @@ -828,16 +829,18 @@ read_a_source_file (char *name) if (LABELS_WITHOUT_COLONS || flag_m68k_mri) { + next_char = * input_line_pointer; /* Text at the start of a line must be a label, we run down and stick a colon in. */ - if (is_name_beginner (*input_line_pointer)) + if (is_name_beginner (next_char) || next_char == '"') { - char *line_start = input_line_pointer; + char *line_start; int mri_line_macro; HANDLE_CONDITIONAL_ASSEMBLY (0); - c = get_symbol_end (); + nul_char = get_symbol_name (& line_start); + next_char = (nul_char == '"' ? input_line_pointer[1] : nul_char); /* In MRI mode, the EQU and MACRO pseudoops must be handled specially. */ @@ -871,8 +874,8 @@ read_a_source_file (char *name) symbol in the symbol table. */ if (!mri_line_macro #ifdef TC_START_LABEL_WITHOUT_COLON - && TC_START_LABEL_WITHOUT_COLON(c, - input_line_pointer) + && TC_START_LABEL_WITHOUT_COLON (next_char, + input_line_pointer) #endif ) line_label = colon (line_start); @@ -882,8 +885,8 @@ read_a_source_file (char *name) (valueT) 0, &zero_address_frag); - *input_line_pointer = c; - if (c == ':') + next_char = restore_line_pointer (nul_char); + if (next_char == ':') input_line_pointer++; } } @@ -898,30 +901,32 @@ read_a_source_file (char *name) Each test is independent of all other tests at the (top) level. */ do - c = *input_line_pointer++; - while (c == '\t' || c == ' ' || c == '\f'); + nul_char = next_char = *input_line_pointer++; + while (next_char == '\t' || next_char == ' ' || next_char == '\f'); /* C is the 1st significant character. Input_line_pointer points after that character. */ - if (is_name_beginner (c)) + if (is_name_beginner (next_char) || next_char == '"') { + char *rest; + /* Want user-defined label or pseudo/opcode. */ HANDLE_CONDITIONAL_ASSEMBLY (1); - s = --input_line_pointer; - c = get_symbol_end (); /* name's delimiter. */ + --input_line_pointer; + nul_char = get_symbol_name (& s); /* name's delimiter. */ + next_char = (nul_char == '"' ? input_line_pointer[1] : nul_char); + rest = input_line_pointer + (nul_char == '"' ? 2 : 1); - /* C is character after symbol. - That character's place in the input line is now '\0'. + /* NEXT_CHAR is character after symbol. + The end of symbol in the input line is now '\0'. S points to the beginning of the symbol. [In case of pseudo-op, s->'.'.] - Input_line_pointer->'\0' where c was. */ - if (TC_START_LABEL (c, s, input_line_pointer)) + Input_line_pointer->'\0' where NUL_CHAR was. */ + if (TC_START_LABEL (next_char, s, input_line_pointer)) { if (flag_m68k_mri) { - char *rest = input_line_pointer + 1; - /* In MRI mode, \tsym: set 0 is permitted. */ if (*rest == ':') ++rest; @@ -940,27 +945,27 @@ read_a_source_file (char *name) } line_label = colon (s); /* User-defined label. */ - /* Put ':' back for error messages' sake. */ - *input_line_pointer++ = ':'; + restore_line_pointer (nul_char); + ++ input_line_pointer; #ifdef tc_check_label tc_check_label (line_label); #endif /* Input_line_pointer->after ':'. */ SKIP_WHITESPACE (); } - else if ((c == '=' && input_line_pointer[1] == '=') - || ((c == ' ' || c == '\t') - && input_line_pointer[1] == '=' - && input_line_pointer[2] == '=')) + else if ((next_char == '=' && *rest == '=') + || ((next_char == ' ' || next_char == '\t') + && rest[0] == '=' + && rest[1] == '=')) { equals (s, -1); demand_empty_rest_of_line (); } - else if ((c == '=' - || ((c == ' ' || c == '\t') - && input_line_pointer[1] == '=')) + else if ((next_char == '=' + || ((next_char == ' ' || next_char == '\t') + && *rest == '=')) #ifdef TC_EQUAL_IN_INSN - && !TC_EQUAL_IN_INSN (c, s) + && !TC_EQUAL_IN_INSN (next_char, s) #endif ) { @@ -1000,7 +1005,7 @@ read_a_source_file (char *name) { /* PSEUDO - OP. - WARNING: c has next char, which may be end-of-line. + WARNING: next_char may be end-of-line. We lookup the pseudo-op table with s+1 because we already know that the pseudo-op begins with a '.'. */ @@ -1045,25 +1050,25 @@ read_a_source_file (char *name) { char *end = input_line_pointer; - *input_line_pointer = c; + (void) restore_line_pointer (nul_char); s_ignore (0); - c = *--input_line_pointer; + nul_char = next_char = *--input_line_pointer; *input_line_pointer = '\0'; - if (! macro_defined || ! try_macro (c, s)) + if (! macro_defined || ! try_macro (next_char, s)) { *end = '\0'; as_bad (_("unknown pseudo-op: `%s'"), s); - *input_line_pointer++ = c; + *input_line_pointer++ = nul_char; } continue; } /* Put it back for error messages etc. */ - *input_line_pointer = c; + next_char = restore_line_pointer (nul_char); /* The following skip of whitespace is compulsory. A well shaped space is sometimes all that separates keyword from operands. */ - if (c == ' ' || c == '\t') + if (next_char == ' ' || next_char == '\t') input_line_pointer++; /* Input_line is restored. @@ -1077,16 +1082,16 @@ read_a_source_file (char *name) } else { - /* WARNING: c has char, which may be end-of-line. */ - /* Also: input_line_pointer->`\0` where c was. */ - *input_line_pointer = c; + /* WARNING: next_char may be end-of-line. */ + /* Also: input_line_pointer->`\0` where nul_char was. */ + (void) restore_line_pointer (nul_char); input_line_pointer = _find_end_of_line (input_line_pointer, flag_m68k_mri, 1, 0); - c = *input_line_pointer; + next_char = nul_char = *input_line_pointer; *input_line_pointer = '\0'; generate_lineno_debug (); - if (macro_defined && try_macro (c, s)) + if (macro_defined && try_macro (next_char, s)) continue; if (mri_pending_align) @@ -1102,7 +1107,7 @@ read_a_source_file (char *name) assemble_one (s); /* Assemble 1 instruction. */ - *input_line_pointer++ = c; + *input_line_pointer++ = nul_char; /* We resume loop AFTER the end-of-line from this instruction. */ @@ -1112,17 +1117,20 @@ read_a_source_file (char *name) } /* Empty statement? */ - if (is_end_of_line[(unsigned char) c]) + if (is_end_of_line[(unsigned char) next_char]) continue; - if ((LOCAL_LABELS_DOLLAR || LOCAL_LABELS_FB) && ISDIGIT (c)) + if ((LOCAL_LABELS_DOLLAR || LOCAL_LABELS_FB) && ISDIGIT (next_char)) { /* local label ("4:") */ char *backup = input_line_pointer; HANDLE_CONDITIONAL_ASSEMBLY (1); - temp = c - '0'; + temp = next_char - '0'; + + if (nul_char == '"') + ++ input_line_pointer; /* Read the whole number. */ while (ISDIGIT (*input_line_pointer)) @@ -1156,9 +1164,9 @@ read_a_source_file (char *name) } input_line_pointer = backup; - } /* local label ("4:") */ + } - if (c && strchr (line_comment_chars, c)) + if (next_char && strchr (line_comment_chars, next_char)) { /* Its a comment. Better say APP or NO_APP. */ sb sbuf; char *ends; @@ -1270,7 +1278,7 @@ read_a_source_file (char *name) HANDLE_CONDITIONAL_ASSEMBLY (1); #ifdef tc_unrecognized_line - if (tc_unrecognized_line (c)) + if (tc_unrecognized_line (next_char)) continue; #endif input_line_pointer--; @@ -1800,7 +1808,7 @@ s_mri_common (int small ATTRIBUTE_UNUSED) name = input_line_pointer; if (!ISDIGIT (*name)) - c = get_symbol_end (); + c = get_symbol_name (& name); else { do @@ -1823,7 +1831,7 @@ s_mri_common (int small ATTRIBUTE_UNUSED) } sym = symbol_find_or_make (name); - *input_line_pointer = c; + c = restore_line_pointer (c); if (alc != NULL) free (alc); @@ -2343,8 +2351,7 @@ s_linkonce (int ignore ATTRIBUTE_UNUSED) char *s; char c; - s = input_line_pointer; - c = get_symbol_end (); + c = get_symbol_name (& s); if (strcasecmp (s, "discard") == 0) type = LINKONCE_DISCARD; else if (strcasecmp (s, "one_only") == 0) @@ -2356,7 +2363,7 @@ s_linkonce (int ignore ATTRIBUTE_UNUSED) else as_warn (_("unrecognized .linkonce type `%s'"), s); - *input_line_pointer = c; + (void) restore_line_pointer (c); } #ifdef obj_handle_link_once @@ -2850,7 +2857,7 @@ s_mri_sect (char *type ATTRIBUTE_UNUSED) name = input_line_pointer; if (!ISDIGIT (*name)) - c = get_symbol_end (); + c = get_symbol_name (& name); else { do @@ -2865,11 +2872,11 @@ s_mri_sect (char *type ATTRIBUTE_UNUSED) name = xstrdup (name); - *input_line_pointer = c; + c = restore_line_pointer (c); seg = subseg_new (name, 0); - if (*input_line_pointer == ',') + if (c == ',') { int align; @@ -2924,16 +2931,15 @@ s_mri_sect (char *type ATTRIBUTE_UNUSED) SKIP_WHITESPACE (); - name = input_line_pointer; - c = get_symbol_end (); + c = get_symbol_name (& name); name = xstrdup (name); - *input_line_pointer = c; + c = restore_line_pointer (c); seg = subseg_new (name, 0); - if (*input_line_pointer != ',') + if (c != ',') *type = 'C'; else { @@ -2941,8 +2947,7 @@ s_mri_sect (char *type ATTRIBUTE_UNUSED) ++input_line_pointer; SKIP_WHITESPACE (); - sectype = input_line_pointer; - c = get_symbol_end (); + c = get_symbol_name (& sectype); if (*sectype == '\0') *type = 'C'; else if (strcasecmp (sectype, "text") == 0) @@ -2953,7 +2958,7 @@ s_mri_sect (char *type ATTRIBUTE_UNUSED) *type = 'R'; else as_warn (_("unrecognized section type `%s'"), sectype); - *input_line_pointer = c; + (void) restore_line_pointer (c); } if (*input_line_pointer == ',') @@ -2962,8 +2967,7 @@ s_mri_sect (char *type ATTRIBUTE_UNUSED) ++input_line_pointer; SKIP_WHITESPACE (); - seccmd = input_line_pointer; - c = get_symbol_end (); + c = get_symbol_name (& seccmd); if (strcasecmp (seccmd, "absolute") == 0) { as_bad (_("absolute sections are not supported")); @@ -2975,14 +2979,14 @@ s_mri_sect (char *type ATTRIBUTE_UNUSED) { int align; - *input_line_pointer = c; + (void) restore_line_pointer (c); align = get_absolute_expression (); record_alignment (seg, align); } else { as_warn (_("unrecognized section command `%s'"), seccmd); - *input_line_pointer = c; + (void) restore_line_pointer (c); } } @@ -3028,11 +3032,10 @@ s_purgem (int ignore ATTRIBUTE_UNUSED) char c; SKIP_WHITESPACE (); - name = input_line_pointer; - c = get_symbol_end (); + c = get_symbol_name (& name); delete_macro (name); *input_line_pointer = c; - SKIP_WHITESPACE (); + SKIP_WHITESPACE_AFTER_NAME (); } while (*input_line_pointer++ == ','); @@ -3937,12 +3940,14 @@ cons_worker (int nbytes, /* 1=.byte, 2=.word, 4=.long. */ else #endif { +#if 0 if (*input_line_pointer == '"') { as_bad (_("unexpected `\"' in expression")); ignore_rest_of_line (); return; } +#endif ret = TC_PARSE_CONS_EXPRESSION (&exp, (unsigned int) nbytes); } @@ -4046,8 +4051,7 @@ s_reloc (int ignore ATTRIBUTE_UNUSED) ++input_line_pointer; SKIP_WHITESPACE (); - r_name = input_line_pointer; - c = get_symbol_end (); + c = get_symbol_name (& r_name); if (strncasecmp (r_name, "BFD_RELOC_", 10) == 0) { unsigned int i; @@ -4070,7 +4074,7 @@ s_reloc (int ignore ATTRIBUTE_UNUSED) } exp.X_op = O_absent; - SKIP_WHITESPACE (); + SKIP_WHITESPACE_AFTER_NAME (); if (*input_line_pointer == ',') { ++input_line_pointer; @@ -5957,11 +5961,10 @@ do_s_func (int end_p, const char *default_prefix) return; } - name = input_line_pointer; - delim1 = get_symbol_end (); + delim1 = get_symbol_name (& name); name = xstrdup (name); *input_line_pointer = delim1; - SKIP_WHITESPACE (); + SKIP_WHITESPACE_AFTER_NAME (); if (*input_line_pointer != ',') { if (default_prefix) @@ -5987,10 +5990,9 @@ do_s_func (int end_p, const char *default_prefix) { ++input_line_pointer; SKIP_WHITESPACE (); - label = input_line_pointer; - delim2 = get_symbol_end (); + delim2 = get_symbol_name (& label); label = xstrdup (label); - *input_line_pointer = delim2; + restore_line_pointer (delim2); } if (debug_type == DEBUG_STABS) |