/* as.h - global header file 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. */ #define GAS 1 /* * I think this stuff is largely out of date. xoxorich. * * CAPITALISED names are #defined. * "lowercaseH" is #defined if "lowercase.h" has been #include-d. * "lowercaseT" is a typedef of "lowercase" objects. * "lowercaseP" is type "pointer to object of type 'lowercase'". * "lowercaseS" is typedef struct ... lowercaseS. * * #define DEBUG to enable all the "know" assertion tests. * #define SUSPECT when debugging hash code. * #define COMMON as "extern" for all modules except one, where you #define * COMMON as "". * If TEST is #defined, then we are testing a module: #define COMMON as "". */ /* These #defines are for parameters of entire assembler. */ #define DEBUG /* temporary */ /* These #includes are for type definitions etc. */ #include #ifdef DEBUG #undef NDEBUG #endif #include #include #ifdef BFD_ASSEMBLER #include #endif #include "host.h" #include "flonum.h" /* Make Saber happier on obstack.h. */ #ifdef SABER #undef __PTR_TO_INT #define __PTR_TO_INT(P) ((int)(P)) #undef __INT_TO_PTR #define __INT_TO_PTR(P) ((char *)(P)) #endif #ifndef __LINE__ #define __LINE__ "unknown" #endif /* __LINE__ */ #ifndef __FILE__ #define __FILE__ "unknown" #endif /* __FILE__ */ #ifndef __STDC__ #ifndef const #define const #endif #ifndef volatile #define volatile #endif #endif /* ! __STDC__ */ #define obstack_chunk_alloc xmalloc #define obstack_chunk_free xfree #define xfree free #define BAD_CASE(val) \ { \ as_fatal("Case value %d unexpected at line %d of file \"%s\"\n", \ val, __LINE__, __FILE__); \ } /* These are assembler-wide concepts */ #ifdef BFD_ASSEMBLER extern bfd *stdoutput; typedef bfd_vma addressT; typedef bfd_signed_vma offsetT; #else typedef unsigned long addressT; typedef long offsetT; #endif /* Type of symbol value, etc. For use in prototypes. */ typedef addressT valueT; #ifndef COMMON #ifdef TEST #define COMMON /* declare our COMMONs storage here. */ #else #define COMMON extern /* our commons live elswhere */ #endif #endif /* COMMON now defined */ #ifdef DEBUG #ifndef know #define know(p) assert(p) /* Verify our assumptions! */ #endif /* not yet defined */ #else #define know(p) /* know() checks are no-op.ed */ #endif #if defined (BROKEN_ASSERT) && !defined (NDEBUG) /* Used on machines where the "assert" macro is buggy. (For example, on the RS/6000, Reiser-cpp substitution is done to put the condition into a string, so if the condition contains a string, parse errors result.) If the condition fails, just drop core file. */ #undef assert #define assert(p) ((p) ? 0 : (abort (), 0)) #endif /* input_scrub.c */ /* * Supplies sanitised buffers to read.c. * Also understands printing line-number part of error messages. */ /* subsegs.c Sub-segments. Also, segment(=expression type)s.*/ #ifndef BFD_ASSEMBLER /* * This table describes the use of segments as EXPRESSION types. * * X_seg X_add_symbol X_subtract_symbol X_add_number * SEG_ABSENT no (legal) expression * SEG_PASS1 no (defined) " * SEG_BIG * > 32 bits const. * SEG_ABSOLUTE 0 * SEG_DATA * 0 * SEG_TEXT * 0 * SEG_BSS * 0 * SEG_UNKNOWN * 0 * SEG_DIFFERENCE 0 * 0 * SEG_REGISTER * * * The blank fields MUST be 0, and are nugatory. * The '0' fields MAY be 0. The '*' fields MAY NOT be 0. * * SEG_BIG: X_add_number is < 0 if the result is in * generic_floating_point_number. The value is -'c' where c is the * character that introduced the constant. e.g. "0f6.9" will have -'f' * as a X_add_number value. * X_add_number > 0 is a count of how many littlenums it took to * represent a bignum. * SEG_DIFFERENCE: * If segments of both symbols are known, they are the same segment. * X_add_symbol != X_sub_symbol (then we just cancel them, => SEG_ABSOLUTE). */ #ifdef MANY_SEGMENTS #include "bfd.h" #define N_SEGMENTS 10 #define SEG_NORMAL(x) ((x) >= SEG_E0 && (x) <= SEG_E9) #define SEG_LIST SEG_E0,SEG_E1,SEG_E2,SEG_E3,SEG_E4,SEG_E5,SEG_E6,SEG_E7,SEG_E8,SEG_E9 #define SEG_TEXT SEG_E0 #define SEG_DATA SEG_E1 #define SEG_BSS SEG_E2 #else #define N_SEGMENTS 3 #define SEG_NORMAL(x) ((x) == SEG_TEXT || (x) == SEG_DATA || (x) == SEG_BSS) #define SEG_LIST SEG_TEXT,SEG_DATA,SEG_BSS #endif typedef enum _segT { SEG_ABSOLUTE = 0, SEG_LIST, SEG_UNKNOWN, SEG_ABSENT, /* Mythical Segment (absent): NO expression seen. */ SEG_PASS1, /* Mythical Segment: Need another pass. */ SEG_GOOF, /* Only happens if AS has a logic error. */ /* Invented so we don't crash printing */ /* error message involving weird segment. */ SEG_BIG, /* Bigger than 32 bits constant. */ SEG_DIFFERENCE, /* Mythical Segment: absolute difference. */ SEG_DEBUG, /* Debug segment */ SEG_NTV, /* Transfert vector preload segment */ SEG_PTV, /* Transfert vector postload segment */ SEG_REGISTER /* Mythical: a register-valued expression */ } segT; #define SEG_MAXIMUM_ORDINAL (SEG_REGISTER) #else typedef asection *segT; #define SEG_NORMAL(SEG) ((SEG) != absolute_section \ && (SEG) != undefined_section \ && (SEG) != big_section \ && (SEG) != reg_section \ && (SEG) != pass1_section \ && (SEG) != diff_section \ && (SEG) != absent_section) #endif typedef int subsegT; /* What subseg we are accreting now? */ COMMON subsegT now_subseg; /* Segment our instructions emit to. */ COMMON segT now_seg; #ifdef BFD_ASSEMBLER #define segment_name(SEG) bfd_get_section_name (stdoutput, SEG) #else extern char *const seg_name[]; #define segment_name(SEG) seg_name[(int) (SEG)] #endif #ifndef BFD_ASSEMBLER extern int section_alignment[]; #endif #ifdef BFD_ASSEMBLER extern segT big_section, reg_section, pass1_section; extern segT diff_section, absent_section; /* Shouldn't these be eliminated someday? */ extern segT text_section, data_section, bss_section; #define absolute_section (&bfd_abs_section) #define undefined_section (&bfd_und_section) #else #define big_section SEG_BIG #define reg_section SEG_REGISTER #define pass1_section SEG_PASS1 #define diff_section SEG_DIFFERENCE #define absent_section SEG_ABSENT #define text_section SEG_TEXT #define data_section SEG_DATA #define bss_section SEG_BSS #define absolute_section SEG_ABSOLUTE #define undefined_section SEG_UNKNOWN #endif /* relax() */ typedef enum _relax_state { /* Variable chars to be repeated fr_offset times. Fr_symbol unused. Used with fr_offset == 0 for a constant length frag. */ rs_fill = 1, /* Align: Fr_offset: power of 2. 1 variable char: fill character. */ rs_align, /* Org: Fr_offset, fr_symbol: address. 1 variable char: fill character. */ rs_org, rs_machine_dependent #ifndef WORKING_DOT_WORD /* JF: gunpoint */ , rs_broken_word #endif } relax_stateT; /* typedef unsigned char relax_substateT; */ /* JF this is more likely to leave the end of a struct frag on an align boundry. Be very careful with this. */ typedef unsigned long relax_substateT; /* Enough bits for address, but still an integer type. Could be a problem, cross-assembling for 64-bit machines. */ typedef addressT relax_addressT; /* frags.c */ /* * A code fragment (frag) is some known number of chars, followed by some * unknown number of chars. Typically the unknown number of chars is an * instruction address whose size is yet unknown. We always know the greatest * possible size the unknown number of chars may become, and reserve that * much room at the end of the frag. * Once created, frags do not change address during assembly. * We chain the frags in (a) forward-linked list(s). The object-file address * of the 1st char of a frag is generally not known until after relax(). * Many things at assembly time describe an address by {object-file-address * of a particular frag}+offset. BUG: it may be smarter to have a single pointer off to various different notes for different frag kinds. See how code pans */ struct frag { /* Object file address. */ addressT fr_address; /* Chain forward; ascending address order. Rooted in frch_root. */ struct frag *fr_next; /* (Fixed) number of chars we know we have. May be 0. */ offsetT fr_fix; /* (Variable) number of chars after above. May be 0. */ offsetT fr_var; /* For variable-length tail. */ struct symbol *fr_symbol; /* For variable-length tail. */ offsetT fr_offset; /* Points to opcode low addr byte, for relaxation. */ char *fr_opcode; #ifndef NO_LISTING struct list_info_struct *line; #endif /* What state is my tail in? */ relax_stateT fr_type; relax_substateT fr_subtype; /* These are needed only on the NS32K machines */ char fr_pcrel_adjust; char fr_bsr; /* Chars begin here. One day we will compile fr_literal[0]. */ char fr_literal[1]; }; #define SIZEOF_STRUCT_FRAG \ ((int)zero_address_frag.fr_literal-(int)&zero_address_frag) /* We want to say fr_literal[0] above. */ typedef struct frag fragS; /* Current frag we are building. This frag is incomplete. It is, however, included in frchain_now. The fr_fix field is bogus; instead, use: obstack_next_free(&frags)-frag_now->fr_literal. */ COMMON fragS *frag_now; #define frag_now_fix() ((char*)obstack_next_free (&frags) - frag_now->fr_literal) /* For foreign-segment symbol fixups. */ COMMON fragS zero_address_frag; /* For local common (N_BSS segment) fixups. */ COMMON fragS bss_address_frag; /* main program "as.c" (command arguments etc) */ /* ['x'] TRUE if "-x" seen. */ COMMON char flagseen[128]; COMMON unsigned char flag_readonly_data_in_text; COMMON unsigned char flag_suppress_warnings; COMMON unsigned char flag_always_generate_output; /* name of emitted object file */ COMMON char *out_file_name; /* TRUE if we need a second pass. */ COMMON int need_pass_2; /* TRUE if we should do no relaxing, and leave lots of padding. */ COMMON int linkrelax; struct _pseudo_type { /* assembler mnemonic, lower case, no '.' */ char *poc_name; /* Do the work */ void (*poc_handler) (); /* Value to pass to handler */ int poc_val; }; typedef struct _pseudo_type pseudo_typeS; #ifdef BFD_ASSEMBLER_xxx struct lineno_struct { alent line; fragS *frag; struct lineno_struct *next; }; typedef struct lineno_struct lineno; #endif #if defined (__STDC__) && !defined(NO_STDARG) #if __GNUC__ >= 2 /* for use with -Wformat */ #define PRINTF_LIKE(FCN) void FCN (const char *Format, ...) \ __attribute__ ((format (printf, 1, 2))) #else /* ANSI C with stdarg, but not GNU C */ #define PRINTF_LIKE(FCN) void FCN (const char *Format, ...) #endif #else /* not ANSI C, or not stdarg */ #define PRINTF_LIKE(FCN) void FCN () #endif PRINTF_LIKE (as_bad); PRINTF_LIKE (as_fatal); PRINTF_LIKE (as_tsktsk); PRINTF_LIKE (as_warn); void fprint_value PARAMS ((FILE *file, addressT value)); void sprint_value PARAMS ((char *buf, addressT value)); int had_errors PARAMS ((void)); int had_warnings PARAMS ((void)); char *app_push PARAMS ((void)); char *atof_ieee PARAMS ((char *str, int what_kind, LITTLENUM_TYPE * words)); char *input_scrub_include_file PARAMS ((char *filename, char *position)); char *input_scrub_new_file PARAMS ((char *filename)); char *input_scrub_next_buffer PARAMS ((char **bufp)); #if 0 /* incompatible with solaris 2 native cc */ char *strstr PARAMS ((const char *s, const char *wanted)); #endif char *xmalloc PARAMS ((long size)); char *xrealloc PARAMS ((char *ptr, long n)); int do_scrub_next_char PARAMS ((int (*get) (), void (*unget) ())); int gen_to_words PARAMS ((LITTLENUM_TYPE * words, int precision, long exponent_bits)); int had_err PARAMS ((void)); int had_errors PARAMS ((void)); int had_warnings PARAMS ((void)); int ignore_input PARAMS ((void)); int scrub_from_file PARAMS ((void)); int scrub_from_file PARAMS ((void)); int scrub_from_string PARAMS ((void)); int seen_at_least_1_file PARAMS ((void)); void app_pop PARAMS ((char *arg)); void as_howmuch PARAMS ((FILE * stream)); void as_perror PARAMS ((char *gripe, char *filename)); void as_where PARAMS ((void)); void bump_line_counters PARAMS ((void)); void do_scrub_begin PARAMS ((void)); void input_scrub_begin PARAMS ((void)); void input_scrub_close PARAMS ((void)); void input_scrub_end PARAMS ((void)); void int_to_gen PARAMS ((long x)); void new_logical_line PARAMS ((char *fname, int line_number)); void scrub_to_file PARAMS ((int ch)); void scrub_to_string PARAMS ((int ch)); void subsegs_begin PARAMS ((void)); void subseg_change PARAMS ((segT seg, int subseg)); #ifdef BFD_ASSEMBLER segT subseg_new PARAMS ((const char *name, subsegT subseg)); void subseg_set PARAMS ((segT seg, subsegT subseg)); #else void subseg_new PARAMS ((segT seg, subsegT subseg)); #endif /* this one starts the chain of target dependant headers */ #include "targ-env.h" /* these define types needed by the interfaces */ #include "struc-symbol.h" #include "write.h" #include "expr.h" #include "frags.h" #include "hash.h" #include "read.h" #include "symbols.h" #include "tc.h" #include "obj.h" #include "listing.h" #ifdef BFD_ASSEMBLER /* Someday perhaps this will be selectable at run-time. */ #if defined (OBJ_AOUT) || defined (OBJ_BOUT) #define OUTPUT_FLAVOR bfd_target_aout_flavour #endif #ifdef OBJ_COFF #define OUTPUT_FLAVOR bfd_target_coff_flavour #endif #ifdef OBJ_ECOFF #define OUTPUT_FLAVOR bfd_target_ecoff_flavour #endif #ifdef OBJ_ELF #define OUTPUT_FLAVOR bfd_target_elf_flavour #endif #endif /* BFD_ASSEMBLER */ /* end of as.h */