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Diffstat (limited to 'gas/config/obj-vms.c')
| -rw-r--r-- | gas/config/obj-vms.c | 5549 |
1 files changed, 5549 insertions, 0 deletions
diff --git a/gas/config/obj-vms.c b/gas/config/obj-vms.c new file mode 100644 index 0000000..0f08f8e --- /dev/null +++ b/gas/config/obj-vms.c @@ -0,0 +1,5549 @@ +/* vms.c -- Write out a VAX/VMS object file + Copyright (C) 1987, 88, 92, 94, 95, 97, 1998 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. */ + +/* Written by David L. Kashtan */ +/* Modified by Eric Youngdale to write VMS debug records for program + variables */ + +/* Want all of obj-vms.h (as obj-format.h, via targ-env.h, via as.h). */ +#define WANT_VMS_OBJ_DEFS + +#include "as.h" +#include "config.h" +#include "subsegs.h" +#include "obstack.h" + +/* What we do if there is a goof. */ +#define error as_fatal + +#ifdef VMS /* These are of no use if we are cross assembling. */ +#include <fab.h> /* Define File Access Block */ +#include <nam.h> /* Define NAM Block */ +#include <xab.h> /* Define XAB - all different types*/ +extern int sys$open(), sys$close(), sys$asctim(); +#endif + +/* + * Version string of the compiler that produced the code we are + * assembling. (And this assembler, if we do not have compiler info.) + */ +char *compiler_version_string; + +extern int flag_hash_long_names; /* -+ */ +extern int flag_one; /* -1; compatibility with gcc 1.x */ +extern int flag_show_after_trunc; /* -H */ +extern int flag_no_hash_mixed_case; /* -h NUM */ + +/* Flag that determines how we map names. This takes several values, and + * is set with the -h switch. A value of zero implies names should be + * upper case, and the presence of the -h switch inhibits the case hack. + * No -h switch at all sets vms_name_mapping to 0, and allows case hacking. + * A value of 2 (set with -h2) implies names should be + * all lower case, with no case hack. A value of 3 (set with -h3) implies + * that case should be preserved. */ + +/* If the -+ switch is given, then the hash is appended to any name that is + * longer than 31 characters, regardless of the setting of the -h switch. + */ + +char vms_name_mapping = 0; + +static symbolS *Entry_Point_Symbol = 0; /* Pointer to "_main" */ + +/* + * We augment the "gas" symbol structure with this + */ +struct VMS_Symbol +{ + struct VMS_Symbol *Next; + symbolS *Symbol; + int Size; + int Psect_Index; + int Psect_Offset; +}; + +struct VMS_Symbol *VMS_Symbols = 0; +struct VMS_Symbol *Ctors_Symbols = 0; +struct VMS_Symbol *Dtors_Symbols = 0; + +/* We need this to keep track of the various input files, so that we can + * give the debugger the correct source line. + */ + +struct input_file +{ + struct input_file *next; + struct input_file *same_file_fpnt; + int file_number; + int max_line; + int min_line; + int offset; + char flag; + char *name; + symbolS *spnt; +}; + +static struct input_file *file_root = (struct input_file *) NULL; + + +/* + * Styles of PSECTS (program sections) that we generate; just shorthand + * to avoid lists of section attributes. Used by VMS_Psect_Spec(). + */ +enum ps_type +{ + ps_TEXT, ps_DATA, ps_COMMON, ps_CONST, ps_CTORS, ps_DTORS +}; + +/* + * This enum is used to keep track of the various types of variables that + * may be present. + */ + +enum advanced_type +{ + BASIC, POINTER, ARRAY, ENUM, STRUCT, UNION, FUNCTION, VOID, ALIAS, UNKNOWN +}; + +/* + * This structure contains the information from the stabs directives, and the + * information is filled in by VMS_typedef_parse. Everything that is needed + * to generate the debugging record for a given symbol is present here. + * This could be done more efficiently, using nested struct/unions, but for now + * I am happy that it works. + */ +struct VMS_DBG_Symbol +{ + struct VMS_DBG_Symbol *next; + /* description of what this is */ + enum advanced_type advanced; + /* this record is for this type */ + int dbx_type; + /* For advanced types this is the type referred to. I.e., the type + a pointer points to, or the type of object that makes up an + array. */ + int type2; + /* Use this type when generating a variable def */ + int VMS_type; + /* used for arrays - this will be present for all */ + int index_min; + /* entries, but will be meaningless for non-arrays */ + int index_max; + /* Size in bytes of the data type. For an array, this is the size + of one element in the array */ + int data_size; + /* Number of the structure/union/enum - used for ref */ + int struc_numb; +}; + +#define SYMTYPLST_SIZE (1<<4) /* 16; must be power of two */ +#define SYMTYP_HASH(x) ((unsigned)(x) & (SYMTYPLST_SIZE-1)) +struct VMS_DBG_Symbol *VMS_Symbol_type_list[SYMTYPLST_SIZE]; + +/* + * We need this structure to keep track of forward references to + * struct/union/enum that have not been defined yet. When they are ultimately + * defined, then we can go back and generate the TIR commands to make a back + * reference. + */ + +struct forward_ref +{ + struct forward_ref *next; + int dbx_type; + int struc_numb; + char resolved; +}; + +struct forward_ref *f_ref_root = (struct forward_ref *) NULL; + +/* + * This routine is used to compare the names of certain types to various + * fixed types that are known by the debugger. + */ +#define type_check(X) !strcmp (symbol_name, X) + +/* + * This variable is used to keep track of the name of the symbol we are + * working on while we are parsing the stabs directives. + */ +static const char *symbol_name; + +/* We use this counter to assign numbers to all of the structures, unions + * and enums that we define. When we actually declare a variable to the + * debugger, we can simply do it by number, rather than describing the + * whole thing each time. + */ + +static structure_count = 0; + +/* This variable is used to indicate that we are making the last attempt to + parse the stabs, and that we should define as much as we can, and ignore + the rest */ + +static int final_pass; + +/* This variable is used to keep track of the current structure number + * for a given variable. If this is < 0, that means that the structure + * has not yet been defined to the debugger. This is still cool, since + * the VMS object language has ways of fixing things up after the fact, + * so we just make a note of this, and generate fixups at the end. + */ +static int struct_number; + +/* This is used to distinguish between D_float and G_float for telling + the debugger about doubles. gcc outputs the same .stabs regardless + of whether -mg is used to select alternate doubles. */ + +static int vax_g_doubles = 0; + +/* Local symbol references (used to handle N_ABS symbols; gcc does not + generate those, but they're possible with hand-coded assembler input) + are always made relative to some particular environment. If the current + input has any such symbols, then we expect this to get incremented + exactly once and end up having all of them be in environment #0. */ + +static int Current_Environment = -1; + +/* Every object file must specify an module name, which is also used by + traceback records. Set in Write_VMS_MHD_Records(). */ + +static char Module_Name[255+1]; + +/* + * Variable descriptors are used tell the debugger the data types of certain + * more complicated variables (basically anything involving a structure, + * union, enum, array or pointer). Some non-pointer variables of the + * basic types that the debugger knows about do not require a variable + * descriptor. + * + * Since it is impossible to have a variable descriptor longer than 128 + * bytes by virtue of the way that the VMS object language is set up, + * it makes not sense to make the arrays any longer than this, or worrying + * about dynamic sizing of the array. + * + * These are the arrays and counters that we use to build a variable + * descriptor. + */ + +#define MAX_DEBUG_RECORD 128 +static char Local[MAX_DEBUG_RECORD]; /* buffer for variable descriptor */ +static char Asuffix[MAX_DEBUG_RECORD]; /* buffer for array descriptor */ +static int Lpnt; /* index into Local */ +static int Apoint; /* index into Asuffix */ +static char overflow; /* flag to indicate we have written too much*/ +static int total_len; /* used to calculate the total length of variable + descriptor plus array descriptor - used for len byte*/ + +/* Flag if we have told user about finding global constants in the text + section. */ +static int gave_compiler_message = 0; + + +/* + * Global data (Object records limited to 512 bytes by VAX-11 "C" runtime) + */ +static int VMS_Object_File_FD; /* File Descriptor for object file */ +static char Object_Record_Buffer[512]; /* Buffer for object file records */ +static int Object_Record_Offset;/* Offset to end of data */ +static int Current_Object_Record_Type; /* Type of record in above */ + +/* + * Macros for moving data around. Must work on big-endian systems. + */ +#ifdef VMS /* These are more efficient for VMS->VMS systems */ +#define COPY_LONG(dest,val) ( *(long *)(dest) = (val) ) +#define COPY_SHORT(dest,val) ( *(short *)(dest) = (val) ) +#else +#define COPY_LONG(dest,val) md_number_to_chars ((dest), (val), 4) +#define COPY_SHORT(dest,val) md_number_to_chars ((dest), (val), 2) +#endif +/* + * Macros for placing data into the object record buffer. + */ +#define PUT_LONG(val) \ + ( COPY_LONG (&Object_Record_Buffer[Object_Record_Offset], (val)), \ + Object_Record_Offset += 4 ) + +#define PUT_SHORT(val) \ + ( COPY_SHORT (&Object_Record_Buffer[Object_Record_Offset], (val)), \ + Object_Record_Offset += 2 ) + +#define PUT_CHAR(val) ( Object_Record_Buffer[Object_Record_Offset++] = (val) ) + +#define PUT_COUNTED_STRING(cp) do { \ + register const char *p = (cp); \ + PUT_CHAR ((char) strlen (p)); \ + while (*p) PUT_CHAR (*p++); } while (0) + +/* + * Macro for determining if a Name has psect attributes attached + * to it. + */ +#define PSECT_ATTRIBUTES_STRING "$$PsectAttributes_" +#define PSECT_ATTRIBUTES_STRING_LENGTH 18 + +#define HAS_PSECT_ATTRIBUTES(Name) \ + (strncmp ((*Name == '_' ? Name + 1 : Name), \ + PSECT_ATTRIBUTES_STRING, \ + PSECT_ATTRIBUTES_STRING_LENGTH) == 0) + + + /* in: segT out: N_TYPE bits */ +const short seg_N_TYPE[] = +{ + N_ABS, + N_TEXT, + N_DATA, + N_BSS, + N_UNDF, /* unknown */ + N_UNDF, /* error */ + N_UNDF, /* expression */ + N_UNDF, /* debug */ + N_UNDF, /* ntv */ + N_UNDF, /* ptv */ + N_REGISTER, /* register */ +}; + +const segT N_TYPE_seg[N_TYPE + 2] = +{ /* N_TYPE == 0x1E = 32-2 */ + SEG_UNKNOWN, /* N_UNDF == 0 */ + SEG_GOOF, + SEG_ABSOLUTE, /* N_ABS == 2 */ + SEG_GOOF, + SEG_TEXT, /* N_TEXT == 4 */ + SEG_GOOF, + SEG_DATA, /* N_DATA == 6 */ + SEG_GOOF, + SEG_BSS, /* N_BSS == 8 */ + SEG_GOOF, + SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, + SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, + SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, + SEG_REGISTER, /* dummy N_REGISTER for regs = 30 */ + SEG_GOOF, +}; + + +/* Local support routines which return a value. */ + +static struct input_file *find_file PARAMS ((symbolS *)); +static struct VMS_DBG_Symbol *find_symbol PARAMS ((int)); +static symbolS *Define_Routine PARAMS ((symbolS *,int,symbolS *,int)); + +static char *cvt_integer PARAMS ((char *,int *)); +static char *fix_name PARAMS ((char *)); +static char *get_struct_name PARAMS ((char *)); + +static offsetT VMS_Initialized_Data_Size PARAMS ((symbolS *,unsigned)); + +static int VMS_TBT_Source_File PARAMS ((char *,int)); +static int gen1 PARAMS ((struct VMS_DBG_Symbol *,int)); +static int forward_reference PARAMS ((char *)); +static int final_forward_reference PARAMS ((struct VMS_DBG_Symbol *)); +static int VMS_typedef_parse PARAMS ((char *)); +static int hash_string PARAMS ((const char *)); +static int VMS_Psect_Spec PARAMS ((const char *,int,enum ps_type, + struct VMS_Symbol *)); + +/* Local support routines which don't directly return any value. */ + +static void s_const PARAMS ((int)); +static void Create_VMS_Object_File PARAMS ((void)); +static void Flush_VMS_Object_Record_Buffer PARAMS ((void)); +static void Set_VMS_Object_File_Record PARAMS ((int)); +static void Close_VMS_Object_File PARAMS ((void)); +static void vms_tir_stack_psect PARAMS ((int,int,int)); +static void VMS_Store_Immediate_Data PARAMS ((const char *,int,int)); +static void VMS_Set_Data PARAMS ((int,int,int,int)); +static void VMS_Store_Struct PARAMS ((int)); +static void VMS_Def_Struct PARAMS ((int)); +static void VMS_Set_Struct PARAMS ((int)); +static void VMS_TBT_Module_Begin PARAMS ((void)); +static void VMS_TBT_Module_End PARAMS ((void)); +static void VMS_TBT_Routine_Begin PARAMS ((symbolS *,int)); +static void VMS_TBT_Routine_End PARAMS ((int,symbolS *)); +static void VMS_TBT_Block_Begin PARAMS ((symbolS *,int,char *)); +static void VMS_TBT_Block_End PARAMS ((valueT)); +static void VMS_TBT_Line_PC_Correlation PARAMS ((int,int,int,int)); +static void VMS_TBT_Source_Lines PARAMS ((int,int,int)); +static void fpush PARAMS ((int,int)); +static void rpush PARAMS ((int,int)); +static void array_suffix PARAMS ((struct VMS_DBG_Symbol *)); +static void new_forward_ref PARAMS ((int)); +static void generate_suffix PARAMS ((struct VMS_DBG_Symbol *,int)); +static void bitfield_suffix PARAMS ((struct VMS_DBG_Symbol *,int)); +static void setup_basic_type PARAMS ((struct VMS_DBG_Symbol *)); +static void VMS_DBG_record PARAMS ((struct VMS_DBG_Symbol *,int,int,char *)); +static void VMS_local_stab_Parse PARAMS ((symbolS *)); +static void VMS_stab_parse PARAMS ((symbolS *,int,int,int,int)); +static void VMS_GSYM_Parse PARAMS ((symbolS *,int)); +static void VMS_LCSYM_Parse PARAMS ((symbolS *,int)); +static void VMS_STSYM_Parse PARAMS ((symbolS *,int)); +static void VMS_RSYM_Parse PARAMS ((symbolS *,symbolS *,int)); +static void VMS_LSYM_Parse PARAMS ((void)); +static void Define_Local_Symbols PARAMS ((symbolS *,symbolS *,symbolS *,int)); +static void Write_VMS_MHD_Records PARAMS ((void)); +static void Write_VMS_EOM_Record PARAMS ((int,valueT)); +static void VMS_Case_Hack_Symbol PARAMS ((const char *,char *)); +static void VMS_Modify_Psect_Attributes PARAMS ((const char *,int *)); +static void VMS_Global_Symbol_Spec PARAMS ((const char *,int,int,int)); +static void VMS_Local_Environment_Setup PARAMS ((const char *)); +static void VMS_Emit_Globalvalues PARAMS ((unsigned,unsigned,char *)); +static void VMS_Procedure_Entry_Pt PARAMS ((char *,int,int,int)); +static void VMS_Set_Psect PARAMS ((int,int,int)); +static void VMS_Store_Repeated_Data PARAMS ((int,char *,int,int)); +static void VMS_Store_PIC_Symbol_Reference PARAMS ((symbolS *,int, + int,int,int,int)); +static void VMS_Fix_Indirect_Reference PARAMS ((int,int,fragS *,fragS *)); + +/* Support code which used to be inline within vms_write_object_file. */ +static void vms_fixup_text_section PARAMS ((unsigned,struct frag *,struct frag *)); +static void synthesize_data_segment PARAMS ((unsigned,unsigned,struct frag *)); +static void vms_fixup_data_section PARAMS ((unsigned,unsigned)); +static void global_symbol_directory PARAMS ((unsigned,unsigned)); +static void local_symbols_DST PARAMS ((symbolS *,symbolS *)); +static void vms_build_DST PARAMS ((unsigned)); +static void vms_fixup_xtors_section PARAMS ((struct VMS_Symbol *, int)); + + +/* The following code defines the special types of pseudo-ops that we + use with VMS. */ + +unsigned char const_flag = IN_DEFAULT_SECTION; + +static void +s_const (arg) + int arg; /* 3rd field from obj_pseudo_table[]; not needed here */ +{ + /* Since we don't need `arg', use it as our scratch variable so that + we won't get any "not used" warnings about it. */ + arg = get_absolute_expression (); + subseg_set (SEG_DATA, (subsegT) arg); + const_flag = 1; + demand_empty_rest_of_line (); +} + +const pseudo_typeS obj_pseudo_table[] = +{ + {"const", s_const, 0}, + {0, 0, 0}, +}; /* obj_pseudo_table */ + + +/* Routine to perform RESOLVE_SYMBOL_REDEFINITION(). */ + +int +vms_resolve_symbol_redef (sym) + symbolS *sym; +{ + /* + * If the new symbol is .comm AND it has a size of zero, + * we ignore it (i.e. the old symbol overrides it) + */ + if (SEGMENT_TO_SYMBOL_TYPE ((int) now_seg) == (N_UNDF | N_EXT) + && frag_now_fix () == 0) + { + as_warn (_("compiler emitted zero-size common symbol `%s' already defined"), + S_GET_NAME (sym)); + return 1; + } + /* + * If the old symbol is .comm and it has a size of zero, + * we override it with the new symbol value. + */ + if (S_IS_EXTERNAL (sym) && S_IS_DEFINED (sym) && S_GET_VALUE (sym) == 0) + { + as_warn (_("compiler redefined zero-size common symbol `%s'"), + S_GET_NAME (sym)); + sym->sy_frag = frag_now; + S_SET_OTHER (sym, const_flag); + S_SET_VALUE (sym, frag_now_fix ()); + /* Keep N_EXT bit. */ + sym->sy_symbol.n_type |= SEGMENT_TO_SYMBOL_TYPE ((int) now_seg); + return 1; + } + + return 0; +} + + +/* `tc_frob_label' handler for colon(symbols.c), used to examine the + dummy label(s) gcc inserts at the beginning of each file it generates. + gcc 1.x put "gcc_compiled."; gcc 2.x (as of 2.7) puts "gcc2_compiled." + and "__gnu_language_<name>" and possibly "__vax_<type>_doubles". */ + +void +vms_check_for_special_label (symbolP) +symbolS *symbolP; +{ + /* Special labels only occur prior to explicit section directives. */ + if ((const_flag & IN_DEFAULT_SECTION) != 0) + { + char *sym_name = S_GET_NAME (symbolP); + + if (*sym_name == '_') + ++sym_name; + + if (!strcmp (sym_name, "__vax_g_doubles")) + vax_g_doubles = 1; +#if 0 /* not necessary */ + else if (!strcmp (sym_name, "__vax_d_doubles")) + vax_g_doubles = 0; +#endif +#if 0 /* these are potential alternatives to tc-vax.c's md_parse_options() */ + else if (!strcmp (sym_name, "gcc_compiled.")) + flag_one = 1; + else if (!strcmp (sym_name, "__gnu_language_cplusplus")) + flag_hash_long_names = 1; +#endif + } + return; +} + + +void +obj_read_begin_hook () +{ + return; +} + + +void +obj_crawl_symbol_chain (headers) + object_headers *headers; +{ + symbolS *symbolP; + symbolS **symbolPP; + int symbol_number = 0; + + symbolPP = &symbol_rootP; /* -> last symbol chain link. */ + while ((symbolP = *symbolPP) != NULL) + { + resolve_symbol_value (symbolP, 1); + + /* OK, here is how we decide which symbols go out into the + brave new symtab. Symbols that do are: + + * symbols with no name (stabd's?) + * symbols with debug info in their N_TYPE + * symbols with \1 as their 3rd character (numeric labels) + * "local labels" needed for PIC fixups + + Symbols that don't are: + * symbols that are registers + + All other symbols are output. We complain if a deleted + symbol was marked external. */ + + if (!S_IS_REGISTER (symbolP)) + { + symbolP->sy_number = symbol_number++; + symbolP->sy_name_offset = 0; + symbolPP = &(symbol_next (symbolP)); + } + else + { + if (S_IS_EXTERNAL (symbolP) || !S_IS_DEFINED (symbolP)) + { + as_bad (_("Local symbol %s never defined"), S_GET_NAME (symbolP)); + } /* oops. */ + + /* Unhook it from the chain. */ + *symbolPP = symbol_next (symbolP); + } /* if this symbol should be in the output */ + + } /* for each symbol */ + + H_SET_STRING_SIZE (headers, string_byte_count); + H_SET_SYMBOL_TABLE_SIZE (headers, symbol_number); +} /* obj_crawl_symbol_chain() */ + + + /****** VMS OBJECT FILE HACKING ROUTINES *******/ + + +/* Create the VMS object file. */ + +static void +Create_VMS_Object_File () +{ +#if defined(eunice) || !defined(VMS) + VMS_Object_File_FD = creat (out_file_name, 0777, "var"); +#else /* eunice */ + VMS_Object_File_FD = creat (out_file_name, 0, "rfm=var", + "ctx=bin", "mbc=16", "deq=64", "fop=tef", + "shr=nil"); +#endif /* eunice */ + /* Deal with errors. */ + if (VMS_Object_File_FD < 0) + as_fatal (_("Couldn't create VMS object file \"%s\""), out_file_name); + /* Initialize object file hacking variables. */ + Object_Record_Offset = 0; + Current_Object_Record_Type = -1; +} + + +/* Flush the object record buffer to the object file. */ + +static void +Flush_VMS_Object_Record_Buffer () +{ + /* If the buffer is empty, there's nothing to do. */ + if (Object_Record_Offset == 0) + return; + +#ifndef VMS /* For cross-assembly purposes. */ + { + char RecLen[2]; + + /* "Variable-length record" files have a two byte length field + prepended to each record. It's normally out-of-band, and native + VMS output will insert it automatically for this type of file. + When cross-assembling, we must write it explicitly. */ + md_number_to_chars (RecLen, Object_Record_Offset, 2); + if (write (VMS_Object_File_FD, RecLen, 2) != 2) + error (_("I/O error writing VMS object file (length prefix)")); + /* We also need to force the actual record to be an even number of + bytes. For native output, that's automatic; when cross-assembling, + pad with a NUL byte if length is odd. Do so _after_ writing the + pre-padded length. Since our buffer is defined with even size, + an odd offset implies that it has some room left. */ + if ((Object_Record_Offset & 1) != 0) + Object_Record_Buffer[Object_Record_Offset++] = '\0'; + } +#endif /* not VMS */ + + /* Write the data to the file. */ + if (write (VMS_Object_File_FD, Object_Record_Buffer, Object_Record_Offset) + != Object_Record_Offset) + error (_("I/O error writing VMS object file")); + + /* The buffer is now empty. */ + Object_Record_Offset = 0; +} + + +/* Declare a particular type of object file record. */ + +static void +Set_VMS_Object_File_Record (Type) + int Type; +{ + /* If the type matches, we are done. */ + if (Type == Current_Object_Record_Type) + return; + /* Otherwise: flush the buffer. */ + Flush_VMS_Object_Record_Buffer (); + /* Remember the new type. */ + Current_Object_Record_Type = Type; +} + + +/* Close the VMS Object file. */ + +static void +Close_VMS_Object_File () +{ + /* Flush (should never be necessary) and reset saved record-type context. */ + Set_VMS_Object_File_Record (-1); + +#ifndef VMS /* For cross-assembly purposes. */ + { + char RecLen[2]; + int minus_one = -1; + + /* Write a 2 byte record-length field of -1 into the file, which + means end-of-block when read, hence end-of-file when occurring + in the file's last block. It is only needed for variable-length + record files transferred to VMS as fixed-length record files + (typical for binary FTP; NFS shouldn't need it, but it won't hurt). */ + md_number_to_chars (RecLen, minus_one, 2); + write (VMS_Object_File_FD, RecLen, 2); + } +#else + /* When written on a VMS system, the file header (cf inode) will record + the actual end-of-file position and no inline marker is needed. */ +#endif + + close (VMS_Object_File_FD); +} + + + /****** Text Information and Relocation routines ******/ + + +/* Stack Psect base followed by signed, varying-sized offset. + Common to several object records. */ + +static void +vms_tir_stack_psect (Psect_Index, Offset, Force) + int Psect_Index; + int Offset; + int Force; +{ + int psect_width, offset_width; + + psect_width = ((unsigned) Psect_Index > 255) ? 2 : 1; + offset_width = (Force || Offset > 32767 || Offset < -32768) ? 4 + : (Offset > 127 || Offset < -128) ? 2 : 1; +#define Sta_P(p,o) (((o)<<1) | ((p)-1)) + /* byte or word psect; byte, word, or longword offset */ + switch (Sta_P(psect_width,offset_width)) + { + case Sta_P(1,1): PUT_CHAR (TIR_S_C_STA_PB); + PUT_CHAR ((char)(unsigned char) Psect_Index); + PUT_CHAR ((char) Offset); + break; + case Sta_P(1,2): PUT_CHAR (TIR_S_C_STA_PW); + PUT_CHAR ((char)(unsigned char) Psect_Index); + PUT_SHORT (Offset); + break; + case Sta_P(1,4): PUT_CHAR (TIR_S_C_STA_PL); + PUT_CHAR ((char)(unsigned char) Psect_Index); + PUT_LONG (Offset); + break; + case Sta_P(2,1): PUT_CHAR (TIR_S_C_STA_WPB); + PUT_SHORT (Psect_Index); + PUT_CHAR ((char) Offset); + break; + case Sta_P(2,2): PUT_CHAR (TIR_S_C_STA_WPW); + PUT_SHORT (Psect_Index); + PUT_SHORT (Offset); + break; + case Sta_P(2,4): PUT_CHAR (TIR_S_C_STA_WPL); + PUT_SHORT (Psect_Index); + PUT_LONG (Offset); + break; + } +#undef Sta_P +} + + +/* Store immediate data in current Psect. */ + +static void +VMS_Store_Immediate_Data (Pointer, Size, Record_Type) + const char *Pointer; + int Size; + int Record_Type; +{ + register int i; + + Set_VMS_Object_File_Record (Record_Type); + /* We can only store as most 128 bytes at a time due to the way that + TIR commands are encoded. */ + while (Size > 0) + { + i = (Size > 128) ? 128 : Size; + Size -= i; + /* If we cannot accommodate this record, flush the buffer. */ + if ((Object_Record_Offset + i + 1) >= sizeof Object_Record_Buffer) + Flush_VMS_Object_Record_Buffer (); + /* If the buffer is empty we must insert record type. */ + if (Object_Record_Offset == 0) + PUT_CHAR (Record_Type); + /* Store the count. The Store Immediate TIR command is implied by + a negative command byte, and the length of the immediate data + is abs(command_byte). So, we write the negated length value. */ + PUT_CHAR ((char) (-i & 0xff)); + /* Now store the data. */ + while (--i >= 0) + PUT_CHAR (*Pointer++); + } + /* Flush the buffer if it is more than 75% full. */ + if (Object_Record_Offset > (sizeof (Object_Record_Buffer) * 3 / 4)) + Flush_VMS_Object_Record_Buffer (); +} + + +/* Make a data reference. */ + +static void +VMS_Set_Data (Psect_Index, Offset, Record_Type, Force) + int Psect_Index; + int Offset; + int Record_Type; + int Force; +{ + Set_VMS_Object_File_Record (Record_Type); + /* If the buffer is empty we must insert the record type. */ + if (Object_Record_Offset == 0) + PUT_CHAR (Record_Type); + /* Stack the Psect base with its offset. */ + vms_tir_stack_psect (Psect_Index, Offset, Force); + /* Set relocation base. */ + PUT_CHAR (TIR_S_C_STO_PIDR); + /* Flush the buffer if it is more than 75% full. */ + if (Object_Record_Offset > (sizeof (Object_Record_Buffer) * 3 / 4)) + Flush_VMS_Object_Record_Buffer (); +} + + +/* Make a debugger reference to a struct, union or enum. */ + +static void +VMS_Store_Struct (Struct_Index) + int Struct_Index; +{ + /* We are writing a debug record. */ + Set_VMS_Object_File_Record (OBJ_S_C_DBG); + /* If the buffer is empty we must insert the record type. */ + if (Object_Record_Offset == 0) + PUT_CHAR (OBJ_S_C_DBG); + PUT_CHAR (TIR_S_C_STA_UW); + PUT_SHORT (Struct_Index); + PUT_CHAR (TIR_S_C_CTL_STKDL); + PUT_CHAR (TIR_S_C_STO_L); + /* Flush the buffer if it is more than 75% full. */ + if (Object_Record_Offset > (sizeof (Object_Record_Buffer) * 3 / 4)) + Flush_VMS_Object_Record_Buffer (); +} + + +/* Make a debugger reference to partially define a struct, union or enum. */ + +static void +VMS_Def_Struct (Struct_Index) + int Struct_Index; +{ + /* We are writing a debug record. */ + Set_VMS_Object_File_Record (OBJ_S_C_DBG); + /* If the buffer is empty we must insert the record type. */ + if (Object_Record_Offset == 0) + PUT_CHAR (OBJ_S_C_DBG); + PUT_CHAR (TIR_S_C_STA_UW); + PUT_SHORT (Struct_Index); + PUT_CHAR (TIR_S_C_CTL_DFLOC); + /* Flush the buffer if it is more than 75% full. */ + if (Object_Record_Offset > (sizeof (Object_Record_Buffer) * 3 / 4)) + Flush_VMS_Object_Record_Buffer (); +} + +static void +VMS_Set_Struct (Struct_Index) + int Struct_Index; +{ /* see previous functions for comments */ + Set_VMS_Object_File_Record (OBJ_S_C_DBG); + if (Object_Record_Offset == 0) + PUT_CHAR (OBJ_S_C_DBG); + PUT_CHAR (TIR_S_C_STA_UW); + PUT_SHORT (Struct_Index); + PUT_CHAR (TIR_S_C_CTL_STLOC); + if (Object_Record_Offset > (sizeof (Object_Record_Buffer) * 3 / 4)) + Flush_VMS_Object_Record_Buffer (); +} + + + /****** Traceback Information routines ******/ + + +/* Write the Traceback Module Begin record. */ + +static void +VMS_TBT_Module_Begin () +{ + register char *cp, *cp1; + int Size; + char Local[256]; + + /* Arrange to store the data locally (leave room for size byte). */ + cp = &Local[1]; + /* Begin module. */ + *cp++ = DST_S_C_MODBEG; + *cp++ = 0; /* flags; not used */ + /* + * Language type == "C" + * + * (FIXME: this should be based on the input...) + */ + COPY_LONG (cp, DST_S_C_C); + cp += 4; + /* Store the module name. */ + *cp++ = (char) strlen (Module_Name); + cp1 = Module_Name; + while (*cp1) + *cp++ = *cp1++; + /* Now we can store the record size. */ + Size = (cp - Local); + Local[0] = Size - 1; + /* Put it into the object record. */ + VMS_Store_Immediate_Data (Local, Size, OBJ_S_C_TBT); +} + + +/* Write the Traceback Module End record. */ + +static void +VMS_TBT_Module_End () +{ + char Local[2]; + + /* End module. */ + Local[0] = 1; + Local[1] = DST_S_C_MODEND; + /* Put it into the object record. */ + VMS_Store_Immediate_Data (Local, 2, OBJ_S_C_TBT); +} + + +/* Write a Traceback Routine Begin record. */ + +static void +VMS_TBT_Routine_Begin (symbolP, Psect) + symbolS *symbolP; + int Psect; +{ + register char *cp, *cp1; + char *Name; + int Offset; + int Size; + char Local[512]; + + /* Strip the leading "_" from the name. */ + Name = S_GET_NAME (symbolP); + if (*Name == '_') + Name++; + /* Get the text psect offset. */ + Offset = S_GET_VALUE (symbolP); + /* Set the record size. */ + Size = 1 + 1 + 4 + 1 + strlen (Name); + Local[0] = Size; + /* DST type "routine begin". */ + Local[1] = DST_S_C_RTNBEG; + /* Uses CallS/CallG. */ + Local[2] = 0; + /* Store the data so far. */ + VMS_Store_Immediate_Data (Local, 3, OBJ_S_C_TBT); + /* Make sure we are still generating a OBJ_S_C_TBT record. */ + if (Object_Record_Offset == 0) + PUT_CHAR (OBJ_S_C_TBT); + /* Stack the address. */ + vms_tir_stack_psect (Psect, Offset, 0); + /* Store the data reference. */ + PUT_CHAR (TIR_S_C_STO_PIDR); + /* Store the counted string as data. */ + cp = Local; + cp1 = Name; + Size = strlen (cp1) + 1; + *cp++ = Size - 1; + while (*cp1) + *cp++ = *cp1++; + VMS_Store_Immediate_Data (Local, Size, OBJ_S_C_TBT); +} + + +/* Write a Traceback Routine End record. + + We *must* search the symbol table to find the next routine, since the + assember has a way of reassembling the symbol table OUT OF ORDER Thus + the next routine in the symbol list is not necessarily the next one in + memory. For debugging to work correctly we must know the size of the + routine. */ + +static void +VMS_TBT_Routine_End (Max_Size, sp) + int Max_Size; + symbolS *sp; +{ + symbolS *symbolP; + int Size = 0x7fffffff; + char Local[16]; + valueT sym_value, sp_value = S_GET_VALUE (sp); + + for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP)) + { + if (!S_IS_DEBUG (symbolP) && S_GET_TYPE (symbolP) == N_TEXT) + { + if (*S_GET_NAME (symbolP) == 'L') + continue; + sym_value = S_GET_VALUE (symbolP); + if (sym_value > sp_value && sym_value < Size) + Size = sym_value; + + /* + * Dummy labels like "gcc_compiled." should no longer reach here. + */ +#if 0 + else + /* check if gcc_compiled. has size of zero */ + if (sym_value == sp_value && + sp != symbolP && + (!strcmp (S_GET_NAME (sp), "gcc_compiled.") || + !strcmp (S_GET_NAME (sp), "gcc2_compiled."))) + Size = sym_value; +#endif + } + } + if (Size == 0x7fffffff) + Size = Max_Size; + Size -= sp_value; /* and get the size of the routine */ + /* Record Size. */ + Local[0] = 6; + /* DST type is "routine end". */ + Local[1] = DST_S_C_RTNEND; + Local[2] = 0; /* unused */ + /* Size of routine. */ + COPY_LONG (&Local[3], Size); + /* Store the record. */ + VMS_Store_Immediate_Data (Local, 7, OBJ_S_C_TBT); +} + + +/* Write a Traceback Block Begin record. */ + +static void +VMS_TBT_Block_Begin (symbolP, Psect, Name) + symbolS *symbolP; + int Psect; + char *Name; +{ + register char *cp, *cp1; + int Offset; + int Size; + char Local[512]; + + /* Set the record size. */ + Size = 1 + 1 + 4 + 1 + strlen (Name); + Local[0] = Size; + /* DST type is "begin block"; we simulate with a phony routine. */ + Local[1] = DST_S_C_BLKBEG; + /* Uses CallS/CallG. */ + Local[2] = 0; + /* Store the data so far. */ + VMS_Store_Immediate_Data (Local, 3, OBJ_S_C_DBG); + /* Make sure we are still generating a debug record. */ + if (Object_Record_Offset == 0) + PUT_CHAR (OBJ_S_C_DBG); + /* Now get the symbol address. */ + PUT_CHAR (TIR_S_C_STA_WPL); + PUT_SHORT (Psect); + /* Get the text psect offset. */ + Offset = S_GET_VALUE (symbolP); + PUT_LONG (Offset); + /* Store the data reference. */ + PUT_CHAR (TIR_S_C_STO_PIDR); + /* Store the counted string as data. */ + cp = Local; + cp1 = Name; + Size = strlen (cp1) + 1; + *cp++ = Size - 1; + while (*cp1) + *cp++ = *cp1++; + VMS_Store_Immediate_Data (Local, Size, OBJ_S_C_DBG); +} + + +/* Write a Traceback Block End record. */ + +static void +VMS_TBT_Block_End (Size) + valueT Size; +{ + char Local[16]; + + Local[0] = 6; /* record length */ + /* DST type is "block end"; simulate with a phony end routine. */ + Local[1] = DST_S_C_BLKEND; + Local[2] = 0; /* unused, must be zero */ + COPY_LONG (&Local[3], Size); + VMS_Store_Immediate_Data (Local, 7, OBJ_S_C_DBG); +} + + +/* Write a Line number <-> Program Counter correlation record. */ + +static void +VMS_TBT_Line_PC_Correlation (Line_Number, Offset, Psect, Do_Delta) + int Line_Number; + int Offset; + int Psect; + int Do_Delta; +{ + register char *cp; + char Local[64]; + + if (Do_Delta == 0) + { + /* + * If not delta, set our PC/Line number correlation. + */ + cp = &Local[1]; /* Put size in Local[0] later. */ + /* DST type is "Line Number/PC correlation". */ + *cp++ = DST_S_C_LINE_NUM; + /* Set Line number. */ + if (Line_Number - 1 <= 255) + { + *cp++ = DST_S_C_SET_LINUM_B; + *cp++ = (char) (Line_Number - 1); + } + else if (Line_Number - 1 <= 65535) + { + *cp++ = DST_S_C_SET_LINE_NUM; + COPY_SHORT (cp, Line_Number - 1), cp += 2; + } + else + { + *cp++ = DST_S_C_SET_LINUM_L; + COPY_LONG (cp, Line_Number - 1), cp += 4; + } + /* Set PC. */ + *cp++ = DST_S_C_SET_ABS_PC; + /* Store size now that we know it, then output the data. */ + Local[0] = cp - &Local[1]; + /* Account for the space that TIR_S_C_STO_PIDR will use for the PC. */ + Local[0] += 4; /* size includes length of another longword */ + VMS_Store_Immediate_Data (Local, cp - Local, OBJ_S_C_TBT); + /* Make sure we are still generating a OBJ_S_C_TBT record. */ + if (Object_Record_Offset == 0) + PUT_CHAR (OBJ_S_C_TBT); + vms_tir_stack_psect (Psect, Offset, 0); + PUT_CHAR (TIR_S_C_STO_PIDR); + /* Do a PC offset of 0 to register the line number. */ + Local[0] = 2; + Local[1] = DST_S_C_LINE_NUM; + Local[2] = 0; /* Increment PC by 0 and register line # */ + VMS_Store_Immediate_Data (Local, 3, OBJ_S_C_TBT); + } + else + { + if (Do_Delta < 0) + { + /* + * When delta is negative, terminate the line numbers. + */ + Local[0] = 1 + 1 + 4; + Local[1] = DST_S_C_LINE_NUM; + Local[2] = DST_S_C_TERM_L; + COPY_LONG (&Local[3], Offset); + VMS_Store_Immediate_Data (Local, 7, OBJ_S_C_TBT); + return; + } + /* + * Do a PC/Line delta. + */ + cp = &Local[1]; + *cp++ = DST_S_C_LINE_NUM; + if (Line_Number > 1) + { + /* We need to increment the line number. */ + if (Line_Number - 1 <= 255) + { + *cp++ = DST_S_C_INCR_LINUM; + *cp++ = Line_Number - 1; + } + else if (Line_Number - 1 <= 65535) + { + *cp++ = DST_S_C_INCR_LINUM_W; + COPY_SHORT (cp, Line_Number - 1), cp += 2; + } + else + { + *cp++ = DST_S_C_INCR_LINUM_L; + COPY_LONG (cp, Line_Number - 1), cp += 4; + } + } + /* + * Increment the PC + */ + if (Offset <= 128) + { + /* Small offsets are encoded as negative numbers, rather than the + usual non-negative type code followed by another data field. */ + *cp++ = (char) -Offset; + } + else if (Offset <= 65535) + { + *cp++ = DST_S_C_DELTA_PC_W; + COPY_SHORT (cp, Offset), cp += 2; + } + else + { + *cp++ = DST_S_C_DELTA_PC_L; + COPY_LONG (cp, Offset), cp += 4; + } + /* Set size now that be know it, then output the data. */ + Local[0] = cp - &Local[1]; + VMS_Store_Immediate_Data (Local, cp - Local, OBJ_S_C_TBT); + } +} + + +/* Describe a source file to the debugger. */ + +static int +VMS_TBT_Source_File (Filename, ID_Number) + char *Filename; + int ID_Number; +{ + register char *cp; + int len, rfo, ffb, ebk; + char cdt[8]; + char Local[512]; +#ifdef VMS /* Used for native assembly */ + unsigned Status; + struct FAB fab; /* RMS file access block */ + struct NAM nam; /* file name information */ + struct XABDAT xabdat; /* date+time fields */ + struct XABFHC xabfhc; /* file header characteristics */ + char resultant_string_buffer[255 + 1]; + + /* + * Set up RMS structures: + */ + /* FAB -- file access block */ + memset ((char *) &fab, 0, sizeof fab); + fab.fab$b_bid = FAB$C_BID; + fab.fab$b_bln = (unsigned char) sizeof fab; + fab.fab$l_fna = Filename; + fab.fab$b_fns = (unsigned char) strlen (Filename); + fab.fab$l_nam = (char *) &nam; + fab.fab$l_xab = (char *) &xabdat; + /* NAM -- file name block */ + memset ((char *) &nam, 0, sizeof nam); + nam.nam$b_bid = NAM$C_BID; + nam.nam$b_bln = (unsigned char) sizeof nam; + nam.nam$l_rsa = resultant_string_buffer; + nam.nam$b_rss = (unsigned char) (sizeof resultant_string_buffer - 1); + /* XABs -- extended attributes blocks */ + memset ((char *) &xabdat, 0, sizeof xabdat); + xabdat.xab$b_cod = XAB$C_DAT; + xabdat.xab$b_bln = (unsigned char) sizeof xabdat; + xabdat.xab$l_nxt = (char *) &xabfhc; + memset ((char *) &xabfhc, 0, sizeof xabfhc); + xabfhc.xab$b_cod = XAB$C_FHC; + xabfhc.xab$b_bln = (unsigned char) sizeof xabfhc; + xabfhc.xab$l_nxt = 0; + /* + * Get the file information + */ + Status = sys$open (&fab); + if (!(Status & 1)) + { + as_tsktsk (_("Couldn't find source file \"%s\", status=%%X%x"), + Filename, Status); + return 0; + } + sys$close (&fab); + /* Now extract fields of interest. */ + memcpy (cdt, (char *) &xabdat.xab$q_cdt, 8); /* creation date */ + ebk = xabfhc.xab$l_ebk; /* end-of-file block */ + ffb = xabfhc.xab$w_ffb; /* first free byte of last block */ + rfo = xabfhc.xab$b_rfo; /* record format */ + len = nam.nam$b_rsl; /* length of Filename */ + resultant_string_buffer[len] = '\0'; + Filename = resultant_string_buffer; /* full filename */ +#else /* Cross-assembly */ + /* [Perhaps we ought to use actual values derived from stat() here?] */ + memset (cdt, 0, 8); /* null VMS quadword binary time */ + ebk = ffb = rfo = 0; + len = strlen (Filename); + if (len > 255) /* a single byte is used as count prefix */ + { + Filename += (len - 255); /* tail end is more significant */ + len = 255; + } +#endif /* VMS */ + + cp = &Local[1]; /* fill in record length later */ + *cp++ = DST_S_C_SOURCE; /* DST type is "source file" */ + *cp++ = DST_S_C_SRC_FORMFEED; /* formfeeds count as source records */ + *cp++ = DST_S_C_SRC_DECLFILE; /* declare source file */ + know (cp == &Local[4]); + *cp++ = 0; /* fill in this length below */ + *cp++ = 0; /* flags; must be zero */ + COPY_SHORT (cp, ID_Number), cp += 2; /* file ID number */ + memcpy (cp, cdt, 8), cp += 8; /* creation date+time */ + COPY_LONG (cp, ebk), cp += 4; /* end-of-file block */ + COPY_SHORT (cp, ffb), cp += 2; /* first free byte of last block */ + *cp++ = (char) rfo; /* RMS record format */ + /* Filename. */ + *cp++ = (char) len; + while (--len >= 0) + *cp++ = *Filename++; + /* Library module name (none). */ + *cp++ = 0; + /* Now that size is known, fill it in and write out the record. */ + Local[4] = cp - &Local[5]; /* source file declaration size */ + Local[0] = cp - &Local[1]; /* TBT record size */ + VMS_Store_Immediate_Data (Local, cp - Local, OBJ_S_C_TBT); + return 1; +} + + +/* Traceback information is described in terms of lines from compiler + listing files, not lines from source files. We need to set up the + correlation between listing line numbers and source line numbers. + Since gcc's .stabn directives refer to the source lines, we just + need to describe a one-to-one correspondence. */ + +static void +VMS_TBT_Source_Lines (ID_Number, Starting_Line_Number, Number_Of_Lines) + int ID_Number; + int Starting_Line_Number; + int Number_Of_Lines; +{ + char *cp; + int chunk_limit; + char Local[128]; /* room enough to describe 1310700 lines... */ + + cp = &Local[1]; /* Put size in Local[0] later. */ + *cp++ = DST_S_C_SOURCE; /* DST type is "source file". */ + *cp++ = DST_S_C_SRC_SETFILE; /* Set Source File. */ + COPY_SHORT (cp, ID_Number), cp += 2; /* File ID Number. */ + /* Set record number and define lines. Since no longword form of + SRC_DEFLINES is available, we need to be able to cope with any huge + files a chunk at a time. It doesn't matter for tracebacks, since + unspecified lines are mapped one-to-one and work out right, but it + does matter within the debugger. Without this explicit mapping, + it will complain about lines not existing in the module. */ + chunk_limit = (sizeof Local - 5) / 6; + if (Number_Of_Lines > 65535 * chunk_limit) /* avoid buffer overflow */ + Number_Of_Lines = 65535 * chunk_limit; + while (Number_Of_Lines > 65535) + { + *cp++ = DST_S_C_SRC_SETREC_L; + COPY_LONG (cp, Starting_Line_Number), cp += 4; + *cp++ = DST_S_C_SRC_DEFLINES_W; + COPY_SHORT (cp, 65535), cp += 2; + Starting_Line_Number += 65535; + Number_Of_Lines -= 65535; + } + /* Set record number and define lines, normal case. */ + if (Starting_Line_Number <= 65535) + { + *cp++ = DST_S_C_SRC_SETREC_W; + COPY_SHORT (cp, Starting_Line_Number), cp += 2; + } + else + { + *cp++ = DST_S_C_SRC_SETREC_L; + COPY_LONG (cp, Starting_Line_Number), cp += 4; + } + *cp++ = DST_S_C_SRC_DEFLINES_W; + COPY_SHORT (cp, Number_Of_Lines), cp += 2; + /* Set size now that be know it, then output the data. */ + Local[0] = cp - &Local[1]; + VMS_Store_Immediate_Data (Local, cp - Local, OBJ_S_C_TBT); +} + + + /****** Debugger Information support routines ******/ + + +/* This routine locates a file in the list of files. If an entry does + not exist, one is created. For include files, a new entry is always + created such that inline functions can be properly debugged. */ + +static struct input_file * +find_file (sp) + symbolS *sp; +{ + struct input_file *same_file = 0; + struct input_file *fpnt, *last = 0; + char *sp_name; + + for (fpnt = file_root; fpnt; fpnt = fpnt->next) + { + if (fpnt->spnt == sp) + return fpnt; + last = fpnt; + } + sp_name = S_GET_NAME (sp); + for (fpnt = file_root; fpnt; fpnt = fpnt->next) + { + if (strcmp (sp_name, fpnt->name) == 0) + { + if (fpnt->flag == 1) + return fpnt; + same_file = fpnt; + break; + } + } + fpnt = (struct input_file *) xmalloc (sizeof (struct input_file)); + if (!file_root) + file_root = fpnt; + else + last->next = fpnt; + fpnt->next = 0; + fpnt->name = sp_name; + fpnt->min_line = 0x7fffffff; + fpnt->max_line = 0; + fpnt->offset = 0; + fpnt->flag = 0; + fpnt->file_number = 0; + fpnt->spnt = sp; + fpnt->same_file_fpnt = same_file; + return fpnt; +} + + +/* This routine converts a number string into an integer, and stops when + it sees an invalid character. The return value is the address of the + character just past the last character read. No error is generated. */ + +static char * +cvt_integer (str, rtn) + char *str; + int *rtn; +{ + int ival = 0, sgn = 1; + + if (*str == '-') + sgn = -1, ++str; + while (*str >= '0' && *str <= '9') + ival = 10 * ival + *str++ - '0'; + *rtn = sgn * ival; + return str; +} + + +/* + * The following functions and definitions are used to generate object + * records that will describe program variables to the VMS debugger. + * + * This file contains many of the routines needed to output debugging info + * into the object file that the VMS debugger needs to understand symbols. + * These routines are called very late in the assembly process, and thus + * we can be fairly lax about changing things, since the GSD and the TIR + * sections have already been output. + */ + + +/* This routine fixes the names that are generated by C++, ".this" is a good + example. The period does not work for the debugger, since it looks like + the syntax for a structure element, and thus it gets mightily confused. + + We also use this to strip the PsectAttribute hack from the name before we + write a debugger record. */ + +static char * +fix_name (pnt) + char *pnt; +{ + char *pnt1; + + /* Kill any leading "_". */ + if (*pnt == '_') + pnt++; + + /* Is there a Psect Attribute to skip?? */ + if (HAS_PSECT_ATTRIBUTES (pnt)) + { + /* Yes: Skip it. */ + pnt += PSECT_ATTRIBUTES_STRING_LENGTH; + while (*pnt) + { + if ((pnt[0] == '$') && (pnt[1] == '$')) + { + pnt += 2; + break; + } + pnt++; + } + } + + /* Here we fix the .this -> $this conversion. */ + for (pnt1 = pnt; *pnt1 != 0; pnt1++) + if (*pnt1 == '.') + *pnt1 = '$'; + + return pnt; +} + + +/* When defining a structure, this routine is called to find the name of + the actual structure. It is assumed that str points to the equal sign + in the definition, and it moves backward until it finds the start of the + name. If it finds a 0, then it knows that this structure def is in the + outermost level, and thus symbol_name points to the symbol name. */ + +static char * +get_struct_name (str) + char *str; +{ + char *pnt; + pnt = str; + while ((*pnt != ':') && (*pnt != '\0')) + pnt--; + if (*pnt == '\0') + return (char *) symbol_name; + *pnt-- = '\0'; + while ((*pnt != ';') && (*pnt != '=')) + pnt--; + if (*pnt == ';') + return pnt + 1; + while ((*pnt < '0') || (*pnt > '9')) + pnt++; + while ((*pnt >= '0') && (*pnt <= '9')) + pnt++; + return pnt; +} + + +/* Search symbol list for type number dbx_type. + Return a pointer to struct. */ + +static struct VMS_DBG_Symbol * +find_symbol (dbx_type) + int dbx_type; +{ + struct VMS_DBG_Symbol *spnt; + + spnt = VMS_Symbol_type_list[SYMTYP_HASH (dbx_type)]; + while (spnt) + { + if (spnt->dbx_type == dbx_type) + break; + spnt = spnt->next; + } + if (!spnt || spnt->advanced != ALIAS) + return spnt; + return find_symbol (spnt->type2); +} + + +#if 0 /* obsolete */ +/* this routine puts info into either Local or Asuffix, depending on the sign + * of size. The reason is that it is easier to build the variable descriptor + * backwards, while the array descriptor is best built forwards. In the end + * they get put together, if there is not a struct/union/enum along the way + */ +static void +push (value, size1) + int value, size1; +{ + if (size1 < 0) + { + size1 = -size1; + if (Lpnt < size1) + { + overflow = 1; + Lpnt = 1; + return; + } + Lpnt -= size1; + md_number_to_chars (&Local[Lpnt + 1], value, size1); + } + else + { + if (Apoint + size1 >= MAX_DEBUG_RECORD) + { + overflow = 1; + Apoint = MAX_DEBUG_RECORD - 1; + return; + } + md_number_to_chars (&Asuffix[Apoint], value, size1); + Apoint += size1; + } +} +#endif + + +static void +fpush (value, size) + int value, size; +{ + if (Apoint + size >= MAX_DEBUG_RECORD) + { + overflow = 1; + Apoint = MAX_DEBUG_RECORD - 1; + return; + } + if (size == 1) + Asuffix[Apoint++] = (char) value; + else + { + md_number_to_chars (&Asuffix[Apoint], value, size); + Apoint += size; + } +} + +static void +rpush (value, size) + int value, size; +{ + if (Lpnt < size) + { + overflow = 1; + Lpnt = 1; + return; + } + if (size == 1) + Local[Lpnt--] = (char) value; + else + { + Lpnt -= size; + md_number_to_chars (&Local[Lpnt + 1], value, size); + } +} + + +/* This routine generates the array descriptor for a given array. */ + +static void +array_suffix (spnt2) + struct VMS_DBG_Symbol *spnt2; +{ + struct VMS_DBG_Symbol *spnt; + struct VMS_DBG_Symbol *spnt1; + int rank; + int total_size; + + rank = 0; + spnt = spnt2; + while (spnt->advanced != ARRAY) + { + spnt = find_symbol (spnt->type2); + if (!spnt) + return; + } + spnt1 = spnt; + total_size = 1; + while (spnt1->advanced == ARRAY) + { + rank++; + total_size *= (spnt1->index_max - spnt1->index_min + 1); + spnt1 = find_symbol (spnt1->type2); + } + total_size = total_size * spnt1->data_size; + fpush (spnt1->data_size, 2); /* element size */ + if (spnt1->VMS_type == DBG_S_C_ADVANCED_TYPE) + fpush (0, 1); + else + fpush (spnt1->VMS_type, 1); /* element type */ + fpush (DSC_K_CLASS_A, 1); /* descriptor class */ + fpush (0, 4); /* base address */ + fpush (0, 1); /* scale factor -- not applicable */ + fpush (0, 1); /* digit count -- not applicable */ + fpush (0xc0, 1); /* flags: multiplier block & bounds present */ + fpush (rank, 1); /* number of dimensions */ + fpush (total_size, 4); + fpush (0, 4); /* pointer to element [0][0]...[0] */ + spnt1 = spnt; + while (spnt1->advanced == ARRAY) + { + fpush (spnt1->index_max - spnt1->index_min + 1, 4); + spnt1 = find_symbol (spnt1->type2); + } + spnt1 = spnt; + while (spnt1->advanced == ARRAY) + { + fpush (spnt1->index_min, 4); + fpush (spnt1->index_max, 4); + spnt1 = find_symbol (spnt1->type2); + } +} + + +/* This routine generates the start of a variable descriptor based upon + a struct/union/enum that has yet to be defined. We define this spot as + a new location, and save four bytes for the address. When the struct is + finally defined, then we can go back and plug in the correct address. */ + +static void +new_forward_ref (dbx_type) + int dbx_type; +{ + struct forward_ref *fpnt; + fpnt = (struct forward_ref *) xmalloc (sizeof (struct forward_ref)); + fpnt->next = f_ref_root; + f_ref_root = fpnt; + fpnt->dbx_type = dbx_type; + fpnt->struc_numb = ++structure_count; + fpnt->resolved = 'N'; + rpush (DST_K_TS_IND, 1); /* indirect type specification */ + total_len = 5; + rpush (total_len, 2); + struct_number = -fpnt->struc_numb; +} + + +/* This routine generates the variable descriptor used to describe non-basic + variables. It calls itself recursively until it gets to the bottom of it + all, and then builds the descriptor backwards. It is easiest to do it + this way since we must periodically write length bytes, and it is easiest + if we know the value when it is time to write it. */ + +static int +gen1 (spnt, array_suffix_len) + struct VMS_DBG_Symbol *spnt; + int array_suffix_len; +{ + struct VMS_DBG_Symbol *spnt1; + int i; + + switch (spnt->advanced) + { + case VOID: + rpush (DBG_S_C_VOID, 1); + total_len += 1; + rpush (total_len, 2); + return 0; + case BASIC: + case FUNCTION: + if (array_suffix_len == 0) + { + rpush (spnt->VMS_type, 1); + rpush (DBG_S_C_BASIC, 1); + total_len = 2; + rpush (total_len, 2); + return 1; + } + rpush (0, 4); + rpush (DST_K_VFLAGS_DSC, 1); + rpush (DST_K_TS_DSC, 1); /* descriptor type specification */ + total_len = -2; + return 1; + case STRUCT: + case UNION: + case ENUM: + struct_number = spnt->struc_numb; + if (struct_number < 0) + { + new_forward_ref (spnt->dbx_type); + return 1; + } + rpush (DBG_S_C_STRUCT, 1); + total_len = 5; + rpush (total_len, 2); + return 1; + case POINTER: + spnt1 = find_symbol (spnt->type2); + i = 1; + if (!spnt1) + new_forward_ref (spnt->type2); + else + i = gen1 (spnt1, 0); + if (i) + { /* (*void) is a special case, do not put pointer suffix */ + rpush (DBG_S_C_POINTER, 1); + total_len += 3; + rpush (total_len, 2); + } + return 1; + case ARRAY: + spnt1 = spnt; + while (spnt1->advanced == ARRAY) + { + spnt1 = find_symbol (spnt1->type2); + if (!spnt1) + { + as_tsktsk (_("debugger forward reference error, dbx type %d"), + spnt->type2); + return 0; + } + } +/* It is too late to generate forward references, so the user gets a message. + * This should only happen on a compiler error */ + (void) gen1 (spnt1, 1); + i = Apoint; + array_suffix (spnt); + array_suffix_len = Apoint - i; + switch (spnt1->advanced) + { + case BASIC: + case FUNCTION: + break; + default: + rpush (0, 2); + total_len += 2; + rpush (total_len, 2); + rpush (DST_K_VFLAGS_DSC, 1); + rpush (1, 1); /* flags: element value spec included */ + rpush (1, 1); /* one dimension */ + rpush (DBG_S_C_COMPLEX_ARRAY, 1); + } + total_len += array_suffix_len + 8; + rpush (total_len, 2); + break; + default: /* lint suppression */ + break; + } + return 0; +} + + +/* This generates a suffix for a variable. If it is not a defined type yet, + then dbx_type contains the type we are expecting so we can generate a + forward reference. This calls gen1 to build most of the descriptor, and + then it puts the icing on at the end. It then dumps whatever is needed + to get a complete descriptor (i.e. struct reference, array suffix). */ + +static void +generate_suffix (spnt, dbx_type) + struct VMS_DBG_Symbol *spnt; + int dbx_type; +{ + static const char pvoid[6] = { + 5, /* record.length == 5 */ + DST_K_TYPSPEC, /* record.type == 1 (type specification) */ + 0, /* name.length == 0, no name follows */ + 1, 0, /* type.length == 1 {2 bytes, little endian} */ + DBG_S_C_VOID /* type.type == 5 (pointer to unspecified) */ + }; + int i; + + Apoint = 0; + Lpnt = MAX_DEBUG_RECORD - 1; + total_len = 0; + struct_number = 0; + overflow = 0; + if (!spnt) + new_forward_ref (dbx_type); + else + { + if (spnt->VMS_type != DBG_S_C_ADVANCED_TYPE) + return; /* no suffix needed */ + gen1 (spnt, 0); + } + rpush (0, 1); /* no name (len==0) */ + rpush (DST_K_TYPSPEC, 1); + total_len += 4; + rpush (total_len, 1); + /* If the variable descriptor overflows the record, output a descriptor + for a pointer to void. */ + if ((total_len >= MAX_DEBUG_RECORD) || overflow) + { + as_warn (_("Variable descriptor %d too complicated. Defined as `void *'."), + spnt->dbx_type); + VMS_Store_Immediate_Data (pvoid, 6, OBJ_S_C_DBG); + return; + } + i = 0; + while (Lpnt < MAX_DEBUG_RECORD - 1) + Local[i++] = Local[++Lpnt]; + Lpnt = i; + /* we use this for reference to structure that has already been defined */ + if (struct_number > 0) + { + VMS_Store_Immediate_Data (Local, Lpnt, OBJ_S_C_DBG); + Lpnt = 0; + VMS_Store_Struct (struct_number); + } + /* We use this for a forward reference to a structure that has yet to + be defined. We store four bytes of zero to make room for the actual + address once it is known. */ + if (struct_number < 0) + { + struct_number = -struct_number; + VMS_Store_Immediate_Data (Local, Lpnt, OBJ_S_C_DBG); + Lpnt = 0; + VMS_Def_Struct (struct_number); + COPY_LONG (&Local[Lpnt], 0L); + Lpnt += 4; + VMS_Store_Immediate_Data (Local, Lpnt, OBJ_S_C_DBG); + Lpnt = 0; + } + i = 0; + while (i < Apoint) + Local[Lpnt++] = Asuffix[i++]; + if (Lpnt != 0) + VMS_Store_Immediate_Data (Local, Lpnt, OBJ_S_C_DBG); + Lpnt = 0; +} + + + /* "novel length" type doesn't work for simple atomic types */ +#define USE_BITSTRING_DESCRIPTOR(t) ((t)->advanced == BASIC) +#undef SETUP_BASIC_TYPES + +/* This routine generates a type description for a bitfield. */ + +static void +bitfield_suffix (spnt, width) + struct VMS_DBG_Symbol *spnt; + int width; +{ + Local[Lpnt++] = 13; /* rec.len==13 */ + Local[Lpnt++] = DST_K_TYPSPEC; /* a type specification record */ + Local[Lpnt++] = 0; /* not named */ + COPY_SHORT (&Local[Lpnt], 9); /* typ.len==9 */ + Lpnt += 2; + Local[Lpnt++] = DST_K_TS_NOV_LENG; /* This type is a "novel length" + incarnation of some other type. */ + COPY_LONG (&Local[Lpnt], width); /* size in bits == novel length */ + Lpnt += 4; + VMS_Store_Immediate_Data (Local, Lpnt, OBJ_S_C_DBG); + Lpnt = 0; + /* assert( spnt->struc_numb > 0 ); */ + VMS_Store_Struct (spnt->struc_numb); /* output 4 more bytes */ +} + + +/* Formally define a builtin type, so that it can serve as the target of + an indirect reference. It makes bitfield_suffix() easier by avoiding + the need to use a forward reference for the first occurrence of each + type used in a bitfield. */ + +static void +setup_basic_type (spnt) + struct VMS_DBG_Symbol *spnt; +{ +#ifdef SETUP_BASIC_TYPES + /* This would be very useful if "novel length" fields actually worked + with basic types like they do with enumerated types. However, + they do not, so this isn't worth doing just so that you can use + EXAMINE/TYPE=(__long_long_int) instead of EXAMINE/QUAD. */ + char *p; +#ifndef SETUP_SYNONYM_TYPES + /* This determines whether compatible things like `int' and `long int' + ought to have distinct type records rather than sharing one. */ + struct VMS_DBG_Symbol *spnt2; + + /* first check whether this type has already been seen by another name */ + for (spnt2 = VMS_Symbol_type_list[SYMTYP_HASH (spnt->VMS_type)]; + spnt2; + spnt2 = spnt2->next) + if (spnt2 != spnt && spnt2->VMS_type == spnt->VMS_type) + { + spnt->struc_numb = spnt2->struc_numb; + return; + } +#endif + + /* `structure number' doesn't really mean `structure'; it means an index + into a linker maintained set of saved locations which can be referenced + again later. */ + spnt->struc_numb = ++structure_count; + VMS_Def_Struct (spnt->struc_numb); /* remember where this type lives */ + /* define the simple scalar type */ + Local[Lpnt++] = 6 + strlen (symbol_name) + 2; /* rec.len */ + Local[Lpnt++] = DST_K_TYPSPEC; /* rec.typ==type specification */ + Local[Lpnt++] = strlen (symbol_name) + 2; + Local[Lpnt++] = '_'; /* prefix name with "__" */ + Local[Lpnt++] = '_'; + for (p = symbol_name; *p; p++) + Local[Lpnt++] = *p == ' ' ? '_' : *p; + COPY_SHORT (&Local[Lpnt], 2); /* typ.len==2 */ + Lpnt += 2; + Local[Lpnt++] = DST_K_TS_ATOM; /* typ.kind is simple type */ + Local[Lpnt++] = spnt->VMS_type; /* typ.type */ + VMS_Store_Immediate_Data (Local, Lpnt, OBJ_S_C_DBG); + Lpnt = 0; +#endif /* SETUP_BASIC_TYPES */ + return; +} + + +/* This routine generates a symbol definition for a C symbol for the debugger. + It takes a psect and offset for global symbols; if psect < 0, then this is + a local variable and the offset is relative to FP. In this case it can + be either a variable (Offset < 0) or a parameter (Offset > 0). */ + +static void +VMS_DBG_record (spnt, Psect, Offset, Name) + struct VMS_DBG_Symbol *spnt; + int Psect; + int Offset; + char *Name; +{ + char *Name_pnt; + int len; + int i = 0; + + /* if there are bad characters in name, convert them */ + Name_pnt = fix_name (Name); + + len = strlen (Name_pnt); + if (Psect < 0) + { /* this is a local variable, referenced to SP */ + Local[i++] = 7 + len; + Local[i++] = spnt->VMS_type; + Local[i++] = (Offset > 0) ? DBG_C_FUNCTION_PARAM : DBG_C_LOCAL_SYM; + COPY_LONG (&Local[i], Offset); + i += 4; + } + else + { + Local[i++] = 7 + len; + Local[i++] = spnt->VMS_type; + Local[i++] = DST_K_VALKIND_ADDR; + VMS_Store_Immediate_Data (Local, i, OBJ_S_C_DBG); + i = 0; + VMS_Set_Data (Psect, Offset, OBJ_S_C_DBG, 0); + } + Local[i++] = len; + while (*Name_pnt != '\0') + Local[i++] = *Name_pnt++; + VMS_Store_Immediate_Data (Local, i, OBJ_S_C_DBG); + if (spnt->VMS_type == DBG_S_C_ADVANCED_TYPE) + generate_suffix (spnt, 0); +} + + +/* This routine parses the stabs entries in order to make the definition + for the debugger of local symbols and function parameters. */ + +static void +VMS_local_stab_Parse (sp) + symbolS *sp; +{ + struct VMS_DBG_Symbol *spnt; + char *pnt; + char *pnt1; + char *str; + int dbx_type; + + dbx_type = 0; + str = S_GET_NAME (sp); + pnt = (char *) strchr (str, ':'); + if (!pnt) + return; /* no colon present */ + pnt1 = pnt++; /* save this for later, and skip colon */ + if (*pnt == 'c') + return; /* ignore static constants */ + +/* there is one little catch that we must be aware of. Sometimes function + * parameters are optimized into registers, and the compiler, in its infiite + * wisdom outputs stabs records for *both*. In general we want to use the + * register if it is present, so we must search the rest of the symbols for + * this function to see if this parameter is assigned to a register. + */ + { + symbolS *sp1; + char *str1; + char *pnt2; + + if (*pnt == 'p') + { + for (sp1 = symbol_next (sp); sp1; sp1 = symbol_next (sp1)) + { + if (!S_IS_DEBUG (sp1)) + continue; + if (S_GET_RAW_TYPE (sp1) == N_FUN) + { + pnt2 = (char *) strchr (S_GET_NAME (sp1), ':') + 1; + if (*pnt2 == 'F' || *pnt2 == 'f') + break; + } + if (S_GET_RAW_TYPE (sp1) != N_RSYM) + continue; + str1 = S_GET_NAME (sp1); /* and get the name */ + pnt2 = str; + while (*pnt2 != ':') + { + if (*pnt2 != *str1) + break; + pnt2++; + str1++; + } + if (*str1 == ':' && *pnt2 == ':') + return; /* they are the same! lets skip this one */ + } /* for */ + pnt++; /* skip p in case no register */ + } /* if */ + } /* p block */ + + pnt = cvt_integer (pnt, &dbx_type); + spnt = find_symbol (dbx_type); + if (!spnt) + return; /*Dunno what this is*/ + *pnt1 = '\0'; + VMS_DBG_record (spnt, -1, S_GET_VALUE (sp), str); + *pnt1 = ':'; /* and restore the string */ + return; +} + + +/* This routine parses a stabs entry to find the information required + to define a variable. It is used for global and static variables. + Basically we need to know the address of the symbol. With older + versions of the compiler, const symbols are treated differently, in + that if they are global they are written into the text psect. The + global symbol entry for such a const is actually written as a program + entry point (Yuk!!), so if we cannot find a symbol in the list of + psects, we must search the entry points as well. static consts are + even harder, since they are never assigned a memory address. The + compiler passes a stab to tell us the value, but I am not sure what + to do with it. */ + +static void +VMS_stab_parse (sp, expected_type, type1, type2, Text_Psect) + symbolS *sp; + int expected_type; /* char */ + int type1, type2, Text_Psect; +{ + char *pnt; + char *pnt1; + char *str; + symbolS *sp1; + struct VMS_DBG_Symbol *spnt; + struct VMS_Symbol *vsp; + int dbx_type; + + dbx_type = 0; + str = S_GET_NAME (sp); + pnt = (char *) strchr (str, ':'); + if (!pnt) + return; /* no colon present */ + pnt1 = pnt; /* save this for later*/ + pnt++; + if (*pnt == expected_type) + { + pnt = cvt_integer (pnt + 1, &dbx_type); + spnt = find_symbol (dbx_type); + if (!spnt) + return; /*Dunno what this is*/ + /* + * Now we need to search the symbol table to find the psect and + * offset for this variable. + */ + *pnt1 = '\0'; + vsp = VMS_Symbols; + while (vsp) + { + pnt = S_GET_NAME (vsp->Symbol); + if (pnt && *pnt++ == '_' + /* make sure name is the same and symbol type matches */ + && strcmp (pnt, str) == 0 + && (S_GET_RAW_TYPE (vsp->Symbol) == type1 + || S_GET_RAW_TYPE (vsp->Symbol) == type2)) + break; + vsp = vsp->Next; + } + if (vsp) + { + VMS_DBG_record (spnt, vsp->Psect_Index, vsp->Psect_Offset, str); + *pnt1 = ':'; /* and restore the string */ + return; + } + /* The symbol was not in the symbol list, but it may be an + "entry point" if it was a constant. */ + for (sp1 = symbol_rootP; sp1; sp1 = symbol_next (sp1)) + { + /* + * Dispatch on STAB type + */ + if (S_IS_DEBUG (sp1) || (S_GET_TYPE (sp1) != N_TEXT)) + continue; + pnt = S_GET_NAME (sp1); + if (*pnt == '_') + pnt++; + if (strcmp (pnt, str) == 0) + { + if (!gave_compiler_message && expected_type == 'G') + { + char *long_const_msg = _("\ +***Warning - the assembly code generated by the compiler has placed \n\ + global constant(s) in the text psect. These will not be available to \n\ + other modules, since this is not the correct way to handle this. You \n\ + have two options: 1) get a patched compiler that does not put global \n\ + constants in the text psect, or 2) remove the 'const' keyword from \n\ + definitions of global variables in your source module(s). Don't say \n\ + I didn't warn you! \n"); + + as_tsktsk (long_const_msg); + gave_compiler_message = 1; + } + VMS_DBG_record (spnt, + Text_Psect, + S_GET_VALUE (sp1), + str); + *pnt1 = ':'; + /* fool assembler to not output this as a routine in the TBT */ + pnt1 = S_GET_NAME (sp1); + *pnt1 = 'L'; + S_SET_NAME (sp1, pnt1); + return; + } + } + } + *pnt1 = ':'; /* and restore the string */ + return; +} + + +/* Simpler interfaces into VMS_stab_parse(). */ + +static void +VMS_GSYM_Parse (sp, Text_Psect) + symbolS *sp; + int Text_Psect; +{ /* Global variables */ + VMS_stab_parse (sp, 'G', (N_UNDF | N_EXT), (N_DATA | N_EXT), Text_Psect); +} + +static void +VMS_LCSYM_Parse (sp, Text_Psect) + symbolS *sp; + int Text_Psect; +{ /* Static symbols - uninitialized */ + VMS_stab_parse (sp, 'S', N_BSS, -1, Text_Psect); +} + +static void +VMS_STSYM_Parse (sp, Text_Psect) + symbolS *sp; + int Text_Psect; +{ /* Static symbols - initialized */ + VMS_stab_parse (sp, 'S', N_DATA, -1, Text_Psect); +} + + +/* For register symbols, we must figure out what range of addresses + within the psect are valid. We will use the brackets in the stab + directives to give us guidance as to the PC range that this variable + is in scope. I am still not completely comfortable with this but + as I learn more, I seem to get a better handle on what is going on. + Caveat Emptor. */ + +static void +VMS_RSYM_Parse (sp, Current_Routine, Text_Psect) + symbolS *sp, *Current_Routine; + int Text_Psect; +{ + symbolS *symbolP; + struct VMS_DBG_Symbol *spnt; + char *pnt; + char *pnt1; + char *str; + int dbx_type; + int len; + int i = 0; + int bcnt = 0; + int Min_Offset = -1; /* min PC of validity */ + int Max_Offset = 0; /* max PC of validity */ + + for (symbolP = sp; symbolP; symbolP = symbol_next (symbolP)) + { + /* + * Dispatch on STAB type + */ + switch (S_GET_RAW_TYPE (symbolP)) + { + case N_LBRAC: + if (bcnt++ == 0) + Min_Offset = S_GET_VALUE (symbolP); + break; + case N_RBRAC: + if (--bcnt == 0) + Max_Offset = S_GET_VALUE (symbolP) - 1; + break; + } + if ((Min_Offset != -1) && (bcnt == 0)) + break; + if (S_GET_RAW_TYPE (symbolP) == N_FUN) + { + pnt = (char *) strchr (S_GET_NAME (symbolP), ':') + 1; + if (*pnt == 'F' || *pnt == 'f') break; + } + } + + /* Check to see that the addresses were defined. If not, then there + were no brackets in the function, and we must try to search for + the next function. Since functions can be in any order, we should + search all of the symbol list to find the correct ending address. */ + if (Min_Offset == -1) + { + int Max_Source_Offset; + int This_Offset; + + Min_Offset = S_GET_VALUE (sp); + Max_Source_Offset = Min_Offset; /* just in case no N_SLINEs found */ + for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP)) + switch (S_GET_RAW_TYPE (symbolP)) + { + case N_TEXT | N_EXT: + This_Offset = S_GET_VALUE (symbolP); + if (This_Offset > Min_Offset && This_Offset < Max_Offset) + Max_Offset = This_Offset; + break; + case N_SLINE: + This_Offset = S_GET_VALUE (symbolP); + if (This_Offset > Max_Source_Offset) + Max_Source_Offset = This_Offset; + break; + } + /* If this is the last routine, then we use the PC of the last source + line as a marker of the max PC for which this reg is valid. */ + if (Max_Offset == 0x7fffffff) + Max_Offset = Max_Source_Offset; + } + + dbx_type = 0; + str = S_GET_NAME (sp); + if ((pnt = (char *) strchr (str, ':')) == 0) + return; /* no colon present */ + pnt1 = pnt; /* save this for later*/ + pnt++; + if (*pnt != 'r') + return; + pnt = cvt_integer (pnt + 1, &dbx_type); + spnt = find_symbol (dbx_type); + if (!spnt) + return; /*Dunno what this is yet*/ + *pnt1 = '\0'; + pnt = fix_name (S_GET_NAME (sp)); /* if there are bad characters in name, convert them */ + len = strlen (pnt); + Local[i++] = 25 + len; + Local[i++] = spnt->VMS_type; + Local[i++] = DST_K_VFLAGS_TVS; /* trailing value specified */ + COPY_LONG (&Local[i], 1 + len); /* relative offset, beyond name */ + i += 4; + Local[i++] = len; /* name length (ascic prefix) */ + while (*pnt != '\0') + Local[i++] = *pnt++; + Local[i++] = DST_K_VS_FOLLOWS; /* value specification follows */ + COPY_SHORT (&Local[i], 15); /* length of rest of record */ + i += 2; + Local[i++] = DST_K_VS_ALLOC_SPLIT; /* split lifetime */ + Local[i++] = 1; /* one binding follows */ + VMS_Store_Immediate_Data (Local, i, OBJ_S_C_DBG); + i = 0; + VMS_Set_Data (Text_Psect, Min_Offset, OBJ_S_C_DBG, 1); + VMS_Set_Data (Text_Psect, Max_Offset, OBJ_S_C_DBG, 1); + Local[i++] = DST_K_VALKIND_REG; /* nested value spec */ + COPY_LONG (&Local[i], S_GET_VALUE (sp)); + i += 4; + VMS_Store_Immediate_Data (Local, i, OBJ_S_C_DBG); + *pnt1 = ':'; + if (spnt->VMS_type == DBG_S_C_ADVANCED_TYPE) + generate_suffix (spnt, 0); +} + + +/* This function examines a structure definition, checking all of the elements + to make sure that all of them are fully defined. The only thing that we + kick out are arrays of undefined structs, since we do not know how big + they are. All others we can handle with a normal forward reference. */ + +static int +forward_reference (pnt) + char *pnt; +{ + struct VMS_DBG_Symbol *spnt, *spnt1; + int i; + + pnt = cvt_integer (pnt + 1, &i); + if (*pnt == ';') + return 0; /* no forward references */ + do + { + pnt = (char *) strchr (pnt, ':'); + pnt = cvt_integer (pnt + 1, &i); + spnt = find_symbol (i); + while (spnt && (spnt->advanced == POINTER || spnt->advanced == ARRAY)) + { + spnt1 = find_symbol (spnt->type2); + if (spnt->advanced == ARRAY && !spnt1) + return 1; + spnt = spnt1; + } + pnt = cvt_integer (pnt + 1, &i); + pnt = cvt_integer (pnt + 1, &i); + } while (*++pnt != ';'); + return 0; /* no forward refences found */ +} + + +/* Used to check a single element of a structure on the final pass. */ + +static int +final_forward_reference (spnt) + struct VMS_DBG_Symbol *spnt; +{ + struct VMS_DBG_Symbol *spnt1; + + while (spnt && (spnt->advanced == POINTER || spnt->advanced == ARRAY)) + { + spnt1 = find_symbol (spnt->type2); + if (spnt->advanced == ARRAY && !spnt1) + return 1; + spnt = spnt1; + } + return 0; /* no forward refences found */ +} + + +/* This routine parses the stabs directives to find any definitions of dbx + type numbers. It makes a note of all of them, creating a structure + element of VMS_DBG_Symbol that describes it. This also generates the + info for the debugger that describes the struct/union/enum, so that + further references to these data types will be by number + + We have to process pointers right away, since there can be references + to them later in the same stabs directive. We cannot have forward + references to pointers, (but we can have a forward reference to a + pointer to a structure/enum/union) and this is why we process them + immediately. After we process the pointer, then we search for defs + that are nested even deeper. + + 8/15/92: We have to process arrays right away too, because there can + be multiple references to identical array types in one structure + definition, and only the first one has the definition. */ + +static int +VMS_typedef_parse (str) + char *str; +{ + char *pnt; + char *pnt1; + const char *pnt2; + int i; + int dtype; + struct forward_ref *fpnt; + int i1, i2, i3, len; + struct VMS_DBG_Symbol *spnt; + struct VMS_DBG_Symbol *spnt1; + + /* check for any nested def's */ + pnt = (char *) strchr (str + 1, '='); + if (pnt && str[1] != '*' && (str[1] != 'a' || str[2] != 'r') + && VMS_typedef_parse (pnt) == 1) + return 1; + /* now find dbx_type of entry */ + pnt = str - 1; + if (*pnt == 'c') + { /* check for static constants */ + *str = '\0'; /* for now we ignore them */ + return 0; + } + while ((*pnt <= '9') && (*pnt >= '0')) + pnt--; + pnt++; /* and get back to the number */ + cvt_integer (pnt, &i1); + spnt = find_symbol (i1); + /* first see if this has been defined already, due to forward reference */ + if (!spnt) + { + i2 = SYMTYP_HASH (i1); + spnt = (struct VMS_DBG_Symbol *) xmalloc (sizeof (struct VMS_DBG_Symbol)); + spnt->next = VMS_Symbol_type_list[i2]; + VMS_Symbol_type_list[i2] = spnt; + spnt->dbx_type = i1; /* and save the type */ + spnt->type2 = spnt->VMS_type = spnt->data_size = 0; + spnt->index_min = spnt->index_max = spnt->struc_numb = 0; + } + /* + * For structs and unions, do a partial parse, otherwise we sometimes get + * circular definitions that are impossible to resolve. We read enough + * info so that any reference to this type has enough info to be resolved. + */ + pnt = str + 1; /* point to character past equal sign */ + if (*pnt >= '0' && *pnt <= '9') + { + if (type_check ("void")) + { /* this is the void symbol */ + *str = '\0'; + spnt->advanced = VOID; + return 0; + } + if (type_check ("unknown type")) + { + *str = '\0'; + spnt->advanced = UNKNOWN; + return 0; + } + pnt1 = cvt_integer (pnt, &i1); + if (i1 != spnt->dbx_type) + { + spnt->advanced = ALIAS; + spnt->type2 = i1; + strcpy (str, pnt1); + return 0; + } + as_tsktsk (_("debugginer output: %d is an unknown untyped variable."), + spnt->dbx_type); + return 1; /* do not know what this is */ + } + + pnt = str + 1; /* point to character past equal sign */ + switch (*pnt) + { + case 'r': + spnt->advanced = BASIC; + if (type_check ("int")) + { + spnt->VMS_type = DBG_S_C_SLINT; + spnt->data_size = 4; + } + else if (type_check ("long int")) + { + spnt->VMS_type = DBG_S_C_SLINT; + spnt->data_size = 4; + } + else if (type_check ("unsigned int")) + { + spnt->VMS_type = DBG_S_C_ULINT; + spnt->data_size = 4; + } + else if (type_check ("long unsigned int")) + { + spnt->VMS_type = DBG_S_C_ULINT; + spnt->data_size = 4; + } + else if (type_check ("short int")) + { + spnt->VMS_type = DBG_S_C_SSINT; + spnt->data_size = 2; + } + else if (type_check ("short unsigned int")) + { + spnt->VMS_type = DBG_S_C_USINT; + spnt->data_size = 2; + } + else if (type_check ("char")) + { + spnt->VMS_type = DBG_S_C_SCHAR; + spnt->data_size = 1; + } + else if (type_check ("signed char")) + { + spnt->VMS_type = DBG_S_C_SCHAR; + spnt->data_size = 1; + } + else if (type_check ("unsigned char")) + { + spnt->VMS_type = DBG_S_C_UCHAR; + spnt->data_size = 1; + } + else if (type_check ("float")) + { + spnt->VMS_type = DBG_S_C_REAL4; + spnt->data_size = 4; + } + else if (type_check ("double")) + { + spnt->VMS_type = vax_g_doubles ? DBG_S_C_REAL8_G : DBG_S_C_REAL8; + spnt->data_size = 8; + } + else if (type_check ("long double")) + { + /* same as double, at least for now */ + spnt->VMS_type = vax_g_doubles ? DBG_S_C_REAL8_G : DBG_S_C_REAL8; + spnt->data_size = 8; + } + else if (type_check ("long long int")) + { + spnt->VMS_type = DBG_S_C_SQUAD; /* signed quadword */ + spnt->data_size = 8; + } + else if (type_check ("long long unsigned int")) + { + spnt->VMS_type = DBG_S_C_UQUAD; /* unsigned quadword */ + spnt->data_size = 8; + } + else if (type_check ("complex float")) + { + spnt->VMS_type = DBG_S_C_COMPLX4; + spnt->data_size = 2 * 4; + } + else if (type_check ("complex double")) + { + spnt->VMS_type = vax_g_doubles ? DBG_S_C_COMPLX8_G : DBG_S_C_COMPLX8; + spnt->data_size = 2 * 8; + } + else if (type_check ("complex long double")) + { + /* same as complex double, at least for now */ + spnt->VMS_type = vax_g_doubles ? DBG_S_C_COMPLX8_G : DBG_S_C_COMPLX8; + spnt->data_size = 2 * 8; + } + else + { + /* [pr] + * Shouldn't get here, but if we do, something + * more substantial ought to be done... + */ + spnt->VMS_type = 0; + spnt->data_size = 0; + } + if (spnt->VMS_type != 0) + setup_basic_type (spnt); + pnt1 = (char *) strchr (str, ';') + 1; + break; + case 's': + case 'u': + spnt->advanced = (*pnt == 's') ? STRUCT : UNION; + spnt->VMS_type = DBG_S_C_ADVANCED_TYPE; + pnt1 = cvt_integer (pnt + 1, &spnt->data_size); + if (!final_pass && forward_reference (pnt)) + { + spnt->struc_numb = -1; + return 1; + } + spnt->struc_numb = ++structure_count; + pnt1--; + pnt = get_struct_name (str); + VMS_Def_Struct (spnt->struc_numb); + i = 0; + for (fpnt = f_ref_root; fpnt; fpnt = fpnt->next) + if (fpnt->dbx_type == spnt->dbx_type) + { + fpnt->resolved = 'Y'; + VMS_Set_Struct (fpnt->struc_numb); + VMS_Store_Struct (spnt->struc_numb); + i++; + } + if (i > 0) + VMS_Set_Struct (spnt->struc_numb); + i = 0; + Local[i++] = 11 + strlen (pnt); + Local[i++] = DBG_S_C_STRUCT_START; + Local[i++] = DST_K_VFLAGS_NOVAL; /* structure definition only */ + COPY_LONG (&Local[i], 0L); /* hence value is unused */ + i += 4; + Local[i++] = strlen (pnt); + pnt2 = pnt; + while (*pnt2 != '\0') + Local[i++] = *pnt2++; + i2 = spnt->data_size * 8; /* number of bits */ + COPY_LONG (&Local[i], i2); + i += 4; + VMS_Store_Immediate_Data (Local, i, OBJ_S_C_DBG); + i = 0; + if (pnt != symbol_name) + { + pnt += strlen (pnt); + *pnt = ':'; + } /* replace colon for later */ + while (*++pnt1 != ';') + { + pnt = (char *) strchr (pnt1, ':'); + *pnt = '\0'; + pnt2 = pnt1; + pnt1 = cvt_integer (pnt + 1, &dtype); + pnt1 = cvt_integer (pnt1 + 1, &i2); + pnt1 = cvt_integer (pnt1 + 1, &i3); + spnt1 = find_symbol (dtype); + len = strlen (pnt2); + if (spnt1 && (spnt1->advanced == BASIC || spnt1->advanced == ENUM) + && ((i3 != spnt1->data_size * 8) || (i2 % 8 != 0))) + { /* bitfield */ + if (USE_BITSTRING_DESCRIPTOR (spnt1)) + { + /* This uses a type descriptor, which doesn't work if + the enclosing structure has been placed in a register. + Also, enum bitfields degenerate to simple integers. */ + int unsigned_type = (spnt1->VMS_type == DBG_S_C_ULINT + || spnt1->VMS_type == DBG_S_C_USINT + || spnt1->VMS_type == DBG_S_C_UCHAR + || spnt1->VMS_type == DBG_S_C_UQUAD + || spnt1->advanced == ENUM); /* (approximate) */ + Apoint = 0; + fpush (19 + len, 1); + fpush (unsigned_type ? DBG_S_C_UBITU : DBG_S_C_SBITU, 1); + fpush (DST_K_VFLAGS_DSC, 1); /* specified by descriptor */ + fpush (1 + len, 4); /* relative offset to descriptor */ + fpush (len, 1); /* length byte (ascic prefix) */ + while (*pnt2 != '\0') /* name bytes */ + fpush (*pnt2++, 1); + fpush (i3, 2); /* dsc length == size of bitfield */ + /* dsc type == un?signed bitfield */ + fpush (unsigned_type ? DBG_S_C_UBITU : DBG_S_C_SBITU, 1); + fpush (DSC_K_CLASS_UBS, 1); /* dsc class == unaligned bitstring */ + fpush (0x00, 4); /* dsc pointer == zeroes */ + fpush (i2, 4); /* start position */ + VMS_Store_Immediate_Data (Asuffix, Apoint, OBJ_S_C_DBG); + Apoint = 0; + } + else + { + /* Use a "novel length" type specification, which works + right for register structures and for enum bitfields + but results in larger object modules. */ + Local[i++] = 7 + len; + Local[i++] = DBG_S_C_ADVANCED_TYPE; /* type spec follows */ + Local[i++] = DBG_S_C_STRUCT_ITEM; /* value is a bit offset */ + COPY_LONG (&Local[i], i2); /* bit offset */ + i += 4; + Local[i++] = strlen (pnt2); + while (*pnt2 != '\0') + Local[i++] = *pnt2++; + VMS_Store_Immediate_Data (Local, i, OBJ_S_C_DBG); + i = 0; + bitfield_suffix (spnt1, i3); + } + } + else + { /* not a bitfield */ + /* check if this is a forward reference */ + if (final_pass && final_forward_reference (spnt1)) + { + as_tsktsk (_("debugger output: structure element `%s' has undefined type"), + pnt2); + continue; + } + Local[i++] = 7 + len; + Local[i++] = spnt1 ? spnt1->VMS_type : DBG_S_C_ADVANCED_TYPE; + Local[i++] = DBG_S_C_STRUCT_ITEM; + COPY_LONG (&Local[i], i2); /* bit offset */ + i += 4; + Local[i++] = strlen (pnt2); + while (*pnt2 != '\0') + Local[i++] = *pnt2++; + VMS_Store_Immediate_Data (Local, i, OBJ_S_C_DBG); + i = 0; + if (!spnt1) + generate_suffix (spnt1, dtype); + else if (spnt1->VMS_type == DBG_S_C_ADVANCED_TYPE) + generate_suffix (spnt1, 0); + } + } + pnt1++; + Local[i++] = 0x01; /* length byte */ + Local[i++] = DBG_S_C_STRUCT_END; + VMS_Store_Immediate_Data (Local, i, OBJ_S_C_DBG); + i = 0; + break; + case 'e': + spnt->advanced = ENUM; + spnt->VMS_type = DBG_S_C_ADVANCED_TYPE; + spnt->struc_numb = ++structure_count; + spnt->data_size = 4; + VMS_Def_Struct (spnt->struc_numb); + i = 0; + for (fpnt = f_ref_root; fpnt; fpnt = fpnt->next) + if (fpnt->dbx_type == spnt->dbx_type) + { + fpnt->resolved = 'Y'; + VMS_Set_Struct (fpnt->struc_numb); + VMS_Store_Struct (spnt->struc_numb); + i++; + } + if (i > 0) + VMS_Set_Struct (spnt->struc_numb); + i = 0; + len = strlen (symbol_name); + Local[i++] = 3 + len; + Local[i++] = DBG_S_C_ENUM_START; + Local[i++] = 4 * 8; /* enum values are 32 bits */ + Local[i++] = len; + pnt2 = symbol_name; + while (*pnt2 != '\0') + Local[i++] = *pnt2++; + VMS_Store_Immediate_Data (Local, i, OBJ_S_C_DBG); + i = 0; + while (*++pnt != ';') + { + pnt1 = (char *) strchr (pnt, ':'); + *pnt1++ = '\0'; + pnt1 = cvt_integer (pnt1, &i1); + len = strlen (pnt); + Local[i++] = 7 + len; + Local[i++] = DBG_S_C_ENUM_ITEM; + Local[i++] = DST_K_VALKIND_LITERAL; + COPY_LONG (&Local[i], i1); + i += 4; + Local[i++] = len; + pnt2 = pnt; + while (*pnt != '\0') + Local[i++] = *pnt++; + VMS_Store_Immediate_Data (Local, i, OBJ_S_C_DBG); + i = 0; + pnt = pnt1; /* Skip final semicolon */ + } + Local[i++] = 0x01; /* len byte */ + Local[i++] = DBG_S_C_ENUM_END; + VMS_Store_Immediate_Data (Local, i, OBJ_S_C_DBG); + i = 0; + pnt1 = pnt + 1; + break; + case 'a': + spnt->advanced = ARRAY; + spnt->VMS_type = DBG_S_C_ADVANCED_TYPE; + pnt = (char *) strchr (pnt, ';'); + if (!pnt) + return 1; + pnt1 = cvt_integer (pnt + 1, &spnt->index_min); + pnt1 = cvt_integer (pnt1 + 1, &spnt->index_max); + pnt1 = cvt_integer (pnt1 + 1, &spnt->type2); + pnt = (char *) strchr (str + 1, '='); + if (pnt && VMS_typedef_parse (pnt) == 1) + return 1; + break; + case 'f': + spnt->advanced = FUNCTION; + spnt->VMS_type = DBG_S_C_FUNCTION_ADDR; + /* this masquerades as a basic type*/ + spnt->data_size = 4; + pnt1 = cvt_integer (pnt + 1, &spnt->type2); + break; + case '*': + spnt->advanced = POINTER; + spnt->VMS_type = DBG_S_C_ADVANCED_TYPE; + spnt->data_size = 4; + pnt1 = cvt_integer (pnt + 1, &spnt->type2); + pnt = (char *) strchr (str + 1, '='); + if (pnt && VMS_typedef_parse (pnt) == 1) + return 1; + break; + default: + spnt->advanced = UNKNOWN; + spnt->VMS_type = 0; + as_tsktsk (_("debugger output: %d is an unknown type of variable."), + spnt->dbx_type); + return 1; /* unable to decipher */ + } + /* This removes the evidence of the definition so that the outer levels + of parsing do not have to worry about it. */ + pnt = str; + while (*pnt1 != '\0') + *pnt++ = *pnt1++; + *pnt = '\0'; + return 0; +} + + +/* This is the root routine that parses the stabs entries for definitions. + it calls VMS_typedef_parse, which can in turn call itself. We need to + be careful, since sometimes there are forward references to other symbol + types, and these cannot be resolved until we have completed the parse. + + Also check and see if we are using continuation stabs, if we are, then + paste together the entire contents of the stab before we pass it to + VMS_typedef_parse. */ + +static void +VMS_LSYM_Parse () +{ + char *pnt; + char *pnt1; + char *pnt2; + char *str; + char *parse_buffer = 0; + char fixit[10]; + int incomplete, pass, incom1; + struct forward_ref *fpnt; + symbolS *sp; + + pass = 0; + final_pass = 0; + incomplete = 0; + do + { + incom1 = incomplete; + incomplete = 0; + for (sp = symbol_rootP; sp; sp = symbol_next (sp)) + { + /* + * Deal with STAB symbols + */ + if (S_IS_DEBUG (sp)) + { + /* + * Dispatch on STAB type + */ + switch (S_GET_RAW_TYPE (sp)) + { + case N_GSYM: + case N_LCSYM: + case N_STSYM: + case N_PSYM: + case N_RSYM: + case N_LSYM: + case N_FUN: /*sometimes these contain typedefs*/ + str = S_GET_NAME (sp); + symbol_name = str; + pnt = str + strlen (str) - 1; + if (*pnt == '?') /* Continuation stab. */ + { + symbolS *spnext; + int tlen = 0; + + spnext = sp; + do { + tlen += strlen (str) - 1; + spnext = symbol_next (spnext); + str = S_GET_NAME (spnext); + pnt = str + strlen (str) - 1; + } while (*pnt == '?'); + tlen += strlen (str); + parse_buffer = (char *) xmalloc (tlen + 1); + strcpy (parse_buffer, S_GET_NAME (sp)); + pnt2 = parse_buffer + strlen (parse_buffer) - 1; + *pnt2 = '\0'; + spnext = sp; + do { + spnext = symbol_next (spnext); + str = S_GET_NAME (spnext); + strcat (pnt2, str); + pnt2 += strlen (str) - 1; + *str = '\0'; /* Erase this string */ + /* S_SET_NAME (spnext, str); */ + if (*pnt2 != '?') break; + *pnt2 = '\0'; + } while (1); + str = parse_buffer; + symbol_name = str; + } + if ((pnt = (char *) strchr (str, ':')) != 0) + { + *pnt = '\0'; + pnt1 = pnt + 1; + if ((pnt2 = (char *) strchr (pnt1, '=')) != 0) + incomplete += VMS_typedef_parse (pnt2); + if (parse_buffer) + { + /* At this point the parse buffer should just + contain name:nn. If it does not, then we + are in real trouble. Anyway, this is always + shorter than the original line. */ + pnt2 = S_GET_NAME (sp); + strcpy (pnt2, parse_buffer); + /* S_SET_NAME (sp, pnt2); */ + free (parse_buffer), parse_buffer = 0; + } + *pnt = ':'; /* put back colon to restore dbx_type */ + } + break; + } /*switch*/ + } /* if */ + } /*for*/ + pass++; + /* + * Make one last pass, if needed, and define whatever we can + * that is left. + */ + if (final_pass == 0 && incomplete == incom1) + { + final_pass = 1; + incom1++; /* Force one last pass through */ + } + } while (incomplete != 0 && incomplete != incom1); + /* repeat until all refs resolved if possible */ +/* if (pass > 1) printf (" Required %d passes\n", pass); */ + if (incomplete != 0) + { + as_tsktsk (_("debugger output: Unable to resolve %d circular references."), + incomplete); + } + fpnt = f_ref_root; + symbol_name = "\0"; + while (fpnt) + { + if (fpnt->resolved != 'Y') + { + if (find_symbol (fpnt->dbx_type)) + { + as_tsktsk (_("debugger forward reference error, dbx type %d"), + fpnt->dbx_type); + break; + } + fixit[0] = 0; + sprintf (&fixit[1], "%d=s4;", fpnt->dbx_type); + pnt2 = (char *) strchr (&fixit[1], '='); + VMS_typedef_parse (pnt2); + } + fpnt = fpnt->next; + } +} + + +static void +Define_Local_Symbols (s0P, s2P, Current_Routine, Text_Psect) + symbolS *s0P, *s2P; + symbolS *Current_Routine; + int Text_Psect; +{ + symbolS *s1P; /* each symbol from s0P .. s2P (exclusive) */ + + for (s1P = symbol_next (s0P); s1P != s2P; s1P = symbol_next (s1P)) + { + if (!s1P) + break; /* and return */ + if (S_GET_RAW_TYPE (s1P) == N_FUN) + { + char *pnt = (char *) strchr (S_GET_NAME (s1P), ':') + 1; + if (*pnt == 'F' || *pnt == 'f') break; + } + if (!S_IS_DEBUG (s1P)) + continue; + /* + * Dispatch on STAB type + */ + switch (S_GET_RAW_TYPE (s1P)) + { + default: + continue; /* not left or right brace */ + + case N_LSYM: + case N_PSYM: + VMS_local_stab_Parse (s1P); + break; + + case N_RSYM: + VMS_RSYM_Parse (s1P, Current_Routine, Text_Psect); + break; + } /*switch*/ + } /* for */ +} + + +/* This function crawls the symbol chain searching for local symbols that + need to be described to the debugger. When we enter a new scope with + a "{", it creates a new "block", which helps the debugger keep track + of which scope we are currently in. */ + +static symbolS * +Define_Routine (s0P, Level, Current_Routine, Text_Psect) + symbolS *s0P; + int Level; + symbolS *Current_Routine; + int Text_Psect; +{ + symbolS *s1P; + valueT Offset; + int rcount = 0; + + for (s1P = symbol_next (s0P); s1P != 0; s1P = symbol_next (s1P)) + { + if (S_GET_RAW_TYPE (s1P) == N_FUN) + { + char *pnt = (char *) strchr (S_GET_NAME (s1P), ':') + 1; + if (*pnt == 'F' || *pnt == 'f') break; + } + if (!S_IS_DEBUG (s1P)) + continue; + /* + * Dispatch on STAB type + */ + switch (S_GET_RAW_TYPE (s1P)) + { + default: + continue; /* not left or right brace */ + + case N_LBRAC: + if (Level != 0) + { + char str[10]; + sprintf (str, "$%d", rcount++); + VMS_TBT_Block_Begin (s1P, Text_Psect, str); + } + Offset = S_GET_VALUE (s1P); /* side-effect: fully resolve symbol */ + Define_Local_Symbols (s0P, s1P, Current_Routine, Text_Psect); + s1P = Define_Routine (s1P, Level + 1, Current_Routine, Text_Psect); + if (Level != 0) + VMS_TBT_Block_End (S_GET_VALUE (s1P) - Offset); + s0P = s1P; + break; + + case N_RBRAC: + return s1P; + } /*switch*/ + } /* for */ + + /* We end up here if there were no brackets in this function. + Define everything. */ + Define_Local_Symbols (s0P, (symbolS *)0, Current_Routine, Text_Psect); + return s1P; +} + + +#ifndef VMS +#include <sys/types.h> +#include <time.h> +static void get_VMS_time_on_unix PARAMS ((char *)); + +/* Manufacture a VMS-like time string on a Unix based system. */ +static void +get_VMS_time_on_unix (Now) + char *Now; +{ + char *pnt; + time_t timeb; + + time (&timeb); + pnt = ctime (&timeb); + pnt[3] = 0; + pnt[7] = 0; + pnt[10] = 0; + pnt[16] = 0; + pnt[24] = 0; + sprintf (Now, "%2s-%3s-%s %s", pnt + 8, pnt + 4, pnt + 20, pnt + 11); +} +#endif /* not VMS */ + + +/* Write the MHD (Module Header) records. */ + +static void +Write_VMS_MHD_Records () +{ + register const char *cp; + register char *cp1; + register int i; +#ifdef VMS + struct { unsigned short len, mbz; char *ptr; } Descriptor; +#endif + char Now[17+1]; + + /* We are writing a module header record. */ + Set_VMS_Object_File_Record (OBJ_S_C_HDR); + /* + * *************************** + * *MAIN MODULE HEADER RECORD* + * *************************** + */ + /* Store record type and header type. */ + PUT_CHAR (OBJ_S_C_HDR); + PUT_CHAR (MHD_S_C_MHD); + /* Structure level is 0. */ + PUT_CHAR (OBJ_S_C_STRLVL); + /* Maximum record size is size of the object record buffer. */ + PUT_SHORT (sizeof (Object_Record_Buffer)); + + /* + * FIXME: module name and version should be user + * specifiable via `.ident' and/or `#pragma ident'. + */ + + /* Get module name (the FILENAME part of the object file). */ + cp = out_file_name; + cp1 = Module_Name; + while (*cp) + { + if (*cp == ']' || *cp == '>' || *cp == ':' || *cp == '/') + { + cp1 = Module_Name; + cp++; + continue; + } + *cp1++ = islower (*cp) ? toupper (*cp++) : *cp++; + } + *cp1 = '\0'; + + /* Limit it to 31 characters and store in the object record. */ + while (--cp1 >= Module_Name) + if (*cp1 == '.') + *cp1 = '\0'; + if (strlen (Module_Name) > 31) + { + if (flag_hash_long_names) + as_tsktsk (_("Module name truncated: %s\n"), Module_Name); + Module_Name[31] = '\0'; + } + PUT_COUNTED_STRING (Module_Name); + /* Module Version is "V1.0". */ + PUT_COUNTED_STRING ("V1.0"); + /* Creation time is "now" (17 chars of time string): "dd-MMM-yyyy hh:mm". */ +#ifndef VMS + get_VMS_time_on_unix (Now); +#else /* VMS */ + Descriptor.len = sizeof Now - 1; + Descriptor.mbz = 0; /* type & class unspecified */ + Descriptor.ptr = Now; + (void) sys$asctim ((unsigned short *)0, &Descriptor, (long *)0, 0); +#endif /* VMS */ + for (i = 0; i < 17; i++) + PUT_CHAR (Now[i]); + /* Patch time is "never" (17 zeros). */ + for (i = 0; i < 17; i++) + PUT_CHAR (0); + /* Force this to be a separate output record. */ + Flush_VMS_Object_Record_Buffer (); + + /* + * ************************* + * *LANGUAGE PROCESSOR NAME* + * ************************* + */ + /* Store record type and header type. */ + PUT_CHAR (OBJ_S_C_HDR); + PUT_CHAR (MHD_S_C_LNM); + /* + * Store language processor name and version (not a counted string!). + * + * This is normally supplied by the gcc driver for the command line + * which invokes gas. If absent, we fall back to gas's version. + */ + cp = compiler_version_string; + if (cp == 0) + { + cp = "GNU AS V"; + while (*cp) + PUT_CHAR (*cp++); + cp = VERSION; + } + while (*cp >= ' ') + PUT_CHAR (*cp++); + /* Force this to be a separate output record. */ + Flush_VMS_Object_Record_Buffer (); +} + + +/* Write the EOM (End Of Module) record. */ + +static void +Write_VMS_EOM_Record (Psect, Offset) + int Psect; + valueT Offset; +{ + /* + * We are writing an end-of-module record + * (this assumes that the entry point will always be in a psect + * represented by a single byte, which is the case for code in + * Text_Psect==0) + */ + Set_VMS_Object_File_Record (OBJ_S_C_EOM); + PUT_CHAR (OBJ_S_C_EOM); /* Record type. */ + PUT_CHAR (0); /* Error severity level (we ignore it). */ + /* + * Store the entry point, if it exists + */ + if (Psect >= 0) + { + PUT_CHAR (Psect); + PUT_LONG (Offset); + } + /* Flush the record; this will be our final output. */ + Flush_VMS_Object_Record_Buffer (); +} + + +/* this hash routine borrowed from GNU-EMACS, and strengthened slightly ERY*/ + +static int +hash_string (ptr) + const char *ptr; +{ + register const unsigned char *p = (unsigned char *) ptr; + register const unsigned char *end = p + strlen (ptr); + register unsigned char c; + register int hash = 0; + + while (p != end) + { + c = *p++; + hash = ((hash << 3) + (hash << 15) + (hash >> 28) + c); + } + return hash; +} + +/* + * Generate a Case-Hacked VMS symbol name (limited to 31 chars) + */ +static void +VMS_Case_Hack_Symbol (In, Out) + register const char *In; + register char *Out; +{ + long int init; + long int result; + char *pnt = 0; + char *new_name; + const char *old_name; + register int i; + int destructor = 0; /*hack to allow for case sens in a destructor*/ + int truncate = 0; + int Case_Hack_Bits = 0; + int Saw_Dollar = 0; + static char Hex_Table[16] = + {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'}; + + /* + * Kill any leading "_" + */ + if ((In[0] == '_') && ((In[1] > '9') || (In[1] < '0'))) + In++; + + new_name = Out; /* save this for later*/ + +#if barfoo /* Dead code */ + if ((In[0] == '_') && (In[1] == '$') && (In[2] == '_')) + destructor = 1; +#endif + + /* We may need to truncate the symbol, save the hash for later*/ + result = (strlen (In) > 23) ? hash_string (In) : 0; + /* + * Is there a Psect Attribute to skip?? + */ + if (HAS_PSECT_ATTRIBUTES (In)) + { + /* + * Yes: Skip it + */ + In += PSECT_ATTRIBUTES_STRING_LENGTH; + while (*In) + { + if ((In[0] == '$') && (In[1] == '$')) + { + In += 2; + break; + } + In++; + } + } + + old_name = In; +/* if (strlen (In) > 31 && flag_hash_long_names) + as_tsktsk ("Symbol name truncated: %s\n", In); */ + /* + * Do the case conversion + */ + i = 23; /* Maximum of 23 chars */ + while (*In && (--i >= 0)) + { + Case_Hack_Bits <<= 1; + if (*In == '$') + Saw_Dollar = 1; + if ((destructor == 1) && (i == 21)) + Saw_Dollar = 0; + switch (vms_name_mapping) + { + case 0: + if (isupper (*In)) { + *Out++ = *In++; + Case_Hack_Bits |= 1; + } else { + *Out++ = islower (*In) ? toupper (*In++) : *In++; + } + break; + case 3: *Out++ = *In++; + break; + case 2: + if (islower (*In)) { + *Out++ = *In++; + } else { + *Out++ = isupper (*In) ? tolower (*In++) : *In++; + } + break; + } + } + /* + * If we saw a dollar sign, we don't do case hacking + */ + if (flag_no_hash_mixed_case || Saw_Dollar) + Case_Hack_Bits = 0; + + /* + * If we have more than 23 characters and everything is lowercase + * we can insert the full 31 characters + */ + if (*In) + { + /* + * We have more than 23 characters + * If we must add the case hack, then we have truncated the str + */ + pnt = Out; + truncate = 1; + if (Case_Hack_Bits == 0) + { + /* + * And so far they are all lower case: + * Check up to 8 more characters + * and ensure that they are lowercase + */ + for (i = 0; (In[i] != 0) && (i < 8); i++) + if (isupper (In[i]) && !Saw_Dollar && !flag_no_hash_mixed_case) + break; + + if (In[i] == 0) + truncate = 0; + + if ((i == 8) || (In[i] == 0)) + { + /* + * They are: Copy up to 31 characters + * to the output string + */ + i = 8; + while ((--i >= 0) && (*In)) + switch (vms_name_mapping){ + case 0: *Out++ = islower (*In) ? toupper (*In++) : *In++; + break; + case 3: *Out++ = *In++; + break; + case 2: *Out++ = isupper (*In) ? tolower (*In++) : *In++; + break; + } + } + } + } + /* + * If there were any uppercase characters in the name we + * take on the case hacking string + */ + + /* Old behavior for regular GNU-C compiler */ + if (!flag_hash_long_names) + truncate = 0; + if ((Case_Hack_Bits != 0) || (truncate == 1)) + { + if (truncate == 0) + { + *Out++ = '_'; + for (i = 0; i < 6; i++) + { + *Out++ = Hex_Table[Case_Hack_Bits & 0xf]; + Case_Hack_Bits >>= 4; + } + *Out++ = 'X'; + } + else + { + Out = pnt; /*Cut back to 23 characters maximum */ + *Out++ = '_'; + for (i = 0; i < 7; i++) + { + init = result & 0x01f; + *Out++ = (init < 10) ? ('0' + init) : ('A' + init - 10); + result = result >> 5; + } + } + } /*Case Hack */ + /* + * Done + */ + *Out = 0; + if (truncate == 1 && flag_hash_long_names && flag_show_after_trunc) + as_tsktsk (_("Symbol %s replaced by %s\n"), old_name, new_name); +} + + +/* + * Scan a symbol name for a psect attribute specification + */ +#define GLOBALSYMBOL_BIT 0x10000 +#define GLOBALVALUE_BIT 0x20000 + + +static void +VMS_Modify_Psect_Attributes (Name, Attribute_Pointer) + const char *Name; + int *Attribute_Pointer; +{ + register int i; + register const char *cp; + int Negate; + static const struct + { + const char *Name; + int Value; + } Attributes[] = + { + {"PIC", GPS_S_M_PIC}, + {"LIB", GPS_S_M_LIB}, + {"OVR", GPS_S_M_OVR}, + {"REL", GPS_S_M_REL}, + {"GBL", GPS_S_M_GBL}, + {"SHR", GPS_S_M_SHR}, + {"EXE", GPS_S_M_EXE}, + {"RD", GPS_S_M_RD}, + {"WRT", GPS_S_M_WRT}, + {"VEC", GPS_S_M_VEC}, + {"GLOBALSYMBOL", GLOBALSYMBOL_BIT}, + {"GLOBALVALUE", GLOBALVALUE_BIT}, + {0, 0} + }; + + /* + * Kill leading "_" + */ + if (*Name == '_') + Name++; + /* + * Check for a PSECT attribute list + */ + if (!HAS_PSECT_ATTRIBUTES (Name)) + return; /* If not, return */ + /* + * Skip the attribute list indicator + */ + Name += PSECT_ATTRIBUTES_STRING_LENGTH; + /* + * Process the attributes ("_" separated, "$" terminated) + */ + while (*Name != '$') + { + /* + * Assume not negating + */ + Negate = 0; + /* + * Check for "NO" + */ + if ((Name[0] == 'N') && (Name[1] == 'O')) + { + /* + * We are negating (and skip the NO) + */ + Negate = 1; + Name += 2; + } + /* + * Find the token delimiter + */ + cp = Name; + while (*cp && (*cp != '_') && (*cp != '$')) + cp++; + /* + * Look for the token in the attribute list + */ + for (i = 0; Attributes[i].Name; i++) + { + /* + * If the strings match, set/clear the attr. + */ + if (strncmp (Name, Attributes[i].Name, cp - Name) == 0) + { + /* + * Set or clear + */ + if (Negate) + *Attribute_Pointer &= + ~Attributes[i].Value; + else + *Attribute_Pointer |= + Attributes[i].Value; + /* + * Done + */ + break; + } + } + /* + * Now skip the attribute + */ + Name = cp; + if (*Name == '_') + Name++; + } +} + + +#define GBLSYM_REF 0 +#define GBLSYM_DEF 1 +#define GBLSYM_VAL 2 +#define GBLSYM_LCL 4 /* not GBL after all... */ +#define GBLSYM_WEAK 8 + +/* + * Define a global symbol (or possibly a local one). + */ +static void +VMS_Global_Symbol_Spec (Name, Psect_Number, Psect_Offset, Flags) + const char *Name; + int Psect_Number; + int Psect_Offset; + int Flags; +{ + char Local[32]; + + /* + * We are writing a GSD record + */ + Set_VMS_Object_File_Record (OBJ_S_C_GSD); + /* + * If the buffer is empty we must insert the GSD record type + */ + if (Object_Record_Offset == 0) + PUT_CHAR (OBJ_S_C_GSD); + /* + * We are writing a Global (or local) symbol definition subrecord. + */ + PUT_CHAR ((Flags & GBLSYM_LCL) != 0 ? GSD_S_C_LSY : + ((unsigned) Psect_Number <= 255) ? GSD_S_C_SYM : GSD_S_C_SYMW); + /* + * Data type is undefined + */ + PUT_CHAR (0); + /* + * Switch on Definition/Reference + */ + if ((Flags & GBLSYM_DEF) == 0) + { + /* + * Reference + */ + PUT_SHORT (((Flags & GBLSYM_VAL) == 0) ? GSY_S_M_REL : 0); + if ((Flags & GBLSYM_LCL) != 0) /* local symbols have extra field */ + PUT_SHORT (Current_Environment); + } + else + { + int sym_flags; + + /* + * Definition + *[ assert (LSY_S_M_DEF == GSY_S_M_DEF && LSY_S_M_REL == GSY_S_M_REL); ] + */ + sym_flags = GSY_S_M_DEF; + if (Flags & GBLSYM_WEAK) + sym_flags |= GSY_S_M_WEAK; + if ((Flags & GBLSYM_VAL) == 0) + sym_flags |= GSY_S_M_REL; + PUT_SHORT (sym_flags); + if ((Flags & GBLSYM_LCL) != 0) /* local symbols have extra field */ + PUT_SHORT (Current_Environment); + /* + * Psect Number + */ + if ((Flags & GBLSYM_LCL) == 0 && (unsigned) Psect_Number <= 255) + PUT_CHAR (Psect_Number); + else + PUT_SHORT (Psect_Number); + /* + * Offset + */ + PUT_LONG (Psect_Offset); + } + /* + * Finally, the global symbol name + */ + VMS_Case_Hack_Symbol (Name, Local); + PUT_COUNTED_STRING (Local); + /* + * Flush the buffer if it is more than 75% full + */ + if (Object_Record_Offset > (sizeof (Object_Record_Buffer) * 3 / 4)) + Flush_VMS_Object_Record_Buffer (); +} + +/* + * Define an environment to support local symbol references. + * This is just to mollify the linker; we don't actually do + * anything useful with it. + */ +static void +VMS_Local_Environment_Setup (Env_Name) + const char *Env_Name; +{ + /* We are writing a GSD record. */ + Set_VMS_Object_File_Record (OBJ_S_C_GSD); + /* If the buffer is empty we must insert the GSD record type. */ + if (Object_Record_Offset == 0) + PUT_CHAR (OBJ_S_C_GSD); + /* We are writing an ENV subrecord. */ + PUT_CHAR (GSD_S_C_ENV); + + ++Current_Environment; /* index of environment being defined */ + + /* ENV$W_FLAGS: we are defining the next environment. It's not nested. */ + PUT_SHORT (ENV_S_M_DEF); + /* ENV$W_ENVINDX: index is always 0 for non-nested definitions. */ + PUT_SHORT (0); + + /* ENV$B_NAMLNG + ENV$T_NAME: environment name in ASCIC format. */ + if (!Env_Name) Env_Name = ""; + PUT_COUNTED_STRING ((char *)Env_Name); + + /* Flush the buffer if it is more than 75% full. */ + if (Object_Record_Offset > (sizeof (Object_Record_Buffer) * 3 / 4)) + Flush_VMS_Object_Record_Buffer (); +} + + +/* + * Define a psect + */ +static int +VMS_Psect_Spec (Name, Size, Type, vsp) + const char *Name; + int Size; + enum ps_type Type; + struct VMS_Symbol *vsp; +{ + char Local[32]; + int Psect_Attributes; + + /* + * Generate the appropriate PSECT flags given the PSECT type + */ + switch (Type) + { + case ps_TEXT: + /* Text psects are PIC,noOVR,REL,noGBL,SHR,EXE,RD,noWRT. */ + Psect_Attributes = (GPS_S_M_PIC|GPS_S_M_REL|GPS_S_M_SHR|GPS_S_M_EXE + |GPS_S_M_RD); + break; + case ps_DATA: + /* Data psects are PIC,noOVR,REL,noGBL,noSHR,noEXE,RD,WRT. */ + Psect_Attributes = (GPS_S_M_PIC|GPS_S_M_REL|GPS_S_M_RD|GPS_S_M_WRT); + break; + case ps_COMMON: + /* Common block psects are: PIC,OVR,REL,GBL,noSHR,noEXE,RD,WRT. */ + Psect_Attributes = (GPS_S_M_PIC|GPS_S_M_OVR|GPS_S_M_REL|GPS_S_M_GBL + |GPS_S_M_RD|GPS_S_M_WRT); + break; + case ps_CONST: + /* Const data psects are: PIC,OVR,REL,GBL,noSHR,noEXE,RD,noWRT. */ + Psect_Attributes = (GPS_S_M_PIC|GPS_S_M_OVR|GPS_S_M_REL|GPS_S_M_GBL + |GPS_S_M_RD); + break; + case ps_CTORS: + /* Ctor psects are PIC,noOVR,REL,GBL,noSHR,noEXE,RD,noWRT. */ + Psect_Attributes = (GPS_S_M_PIC|GPS_S_M_REL|GPS_S_M_GBL|GPS_S_M_RD); + break; + case ps_DTORS: + /* Dtor psects are PIC,noOVR,REL,GBL,noSHR,noEXE,RD,noWRT. */ + Psect_Attributes = (GPS_S_M_PIC|GPS_S_M_REL|GPS_S_M_GBL|GPS_S_M_RD); + break; + default: + /* impossible */ + error (_("Unknown VMS psect type (%ld)"), (long) Type); + break; + } + /* + * Modify the psect attributes according to any attribute string + */ + if (vsp && S_GET_TYPE (vsp->Symbol) == N_ABS) + Psect_Attributes |= GLOBALVALUE_BIT; + else if (HAS_PSECT_ATTRIBUTES (Name)) + VMS_Modify_Psect_Attributes (Name, &Psect_Attributes); + /* + * Check for globalref/def/val. + */ + if ((Psect_Attributes & GLOBALVALUE_BIT) != 0) + { + /* + * globalvalue symbols were generated before. This code + * prevents unsightly psect buildup, and makes sure that + * fixup references are emitted correctly. + */ + vsp->Psect_Index = -1; /* to catch errors */ + S_SET_TYPE (vsp->Symbol, N_UNDF); /* make refs work */ + return 1; /* decrement psect counter */ + } + + if ((Psect_Attributes & GLOBALSYMBOL_BIT) != 0) + { + switch (S_GET_RAW_TYPE (vsp->Symbol)) + { + case N_UNDF | N_EXT: + VMS_Global_Symbol_Spec (Name, vsp->Psect_Index, + vsp->Psect_Offset, GBLSYM_REF); + vsp->Psect_Index = -1; + S_SET_TYPE (vsp->Symbol, N_UNDF); + return 1; /* return and indicate no psect */ + case N_DATA | N_EXT: + VMS_Global_Symbol_Spec (Name, vsp->Psect_Index, + vsp->Psect_Offset, GBLSYM_DEF); + /* In this case we still generate the psect */ + break; + default: + as_fatal (_("Globalsymbol attribute for symbol %s was unexpected."), + Name); + break; + } /* switch */ + } + + Psect_Attributes &= 0xffff; /* clear out the globalref/def stuff */ + /* + * We are writing a GSD record + */ + Set_VMS_Object_File_Record (OBJ_S_C_GSD); + /* + * If the buffer is empty we must insert the GSD record type + */ + if (Object_Record_Offset == 0) + PUT_CHAR (OBJ_S_C_GSD); + /* + * We are writing a PSECT definition subrecord + */ + PUT_CHAR (GSD_S_C_PSC); + /* + * Psects are always LONGWORD aligned + */ + PUT_CHAR (2); + /* + * Specify the psect attributes + */ + PUT_SHORT (Psect_Attributes); + /* + * Specify the allocation + */ + PUT_LONG (Size); + /* + * Finally, the psect name + */ + VMS_Case_Hack_Symbol (Name, Local); + PUT_COUNTED_STRING (Local); + /* + * Flush the buffer if it is more than 75% full + */ + if (Object_Record_Offset > (sizeof (Object_Record_Buffer) * 3 / 4)) + Flush_VMS_Object_Record_Buffer (); + return 0; +} + + +/* Given the pointer to a symbol we calculate how big the data at the + symbol is. We do this by looking for the next symbol (local or global) + which will indicate the start of another datum. */ + +static offsetT +VMS_Initialized_Data_Size (s0P, End_Of_Data) + register symbolS *s0P; + unsigned End_Of_Data; +{ + symbolS *s1P; + valueT s0P_val = S_GET_VALUE (s0P), s1P_val, + nearest_val = (valueT) End_Of_Data; + + /* Find the nearest symbol what follows this one. */ + for (s1P = symbol_rootP; s1P; s1P = symbol_next (s1P)) + { + /* The data type must match. */ + if (S_GET_TYPE (s1P) != N_DATA) + continue; + s1P_val = S_GET_VALUE (s1P); + if (s1P_val > s0P_val && s1P_val < nearest_val) + nearest_val = s1P_val; + } + /* Calculate its size. */ + return (offsetT) (nearest_val - s0P_val); +} + + +/* Check symbol names for the Psect hack with a globalvalue, and then + generate globalvalues for those that have it. */ + +static void +VMS_Emit_Globalvalues (text_siz, data_siz, Data_Segment) + unsigned text_siz; + unsigned data_siz; + char *Data_Segment; +{ + register symbolS *sp; + char *stripped_name, *Name; + int Size; + int Psect_Attributes; + int globalvalue; + int typ, abstyp; + + /* + * Scan the symbol table for globalvalues, and emit def/ref when + * required. These will be caught again later and converted to + * N_UNDF + */ + for (sp = symbol_rootP; sp; sp = sp->sy_next) + { + typ = S_GET_RAW_TYPE (sp); + abstyp = ((typ & ~N_EXT) == N_ABS); + /* + * See if this is something we want to look at. + */ + if (!abstyp && + typ != (N_DATA | N_EXT) && + typ != (N_UNDF | N_EXT)) + continue; + /* + * See if this has globalvalue specification. + */ + Name = S_GET_NAME (sp); + + if (abstyp) + { + stripped_name = 0; + Psect_Attributes = GLOBALVALUE_BIT; + } + else if (HAS_PSECT_ATTRIBUTES (Name)) + { + stripped_name = (char *) xmalloc (strlen (Name) + 1); + strcpy (stripped_name, Name); + Psect_Attributes = 0; + VMS_Modify_Psect_Attributes (stripped_name, &Psect_Attributes); + } + else + continue; + + if ((Psect_Attributes & GLOBALVALUE_BIT) != 0) + { + switch (typ) + { + case N_ABS: + /* Local symbol references will want + to have an environment defined. */ + if (Current_Environment < 0) + VMS_Local_Environment_Setup (".N_ABS"); + VMS_Global_Symbol_Spec (Name, 0, + S_GET_VALUE (sp), + GBLSYM_DEF|GBLSYM_VAL|GBLSYM_LCL); + break; + case N_ABS | N_EXT: + VMS_Global_Symbol_Spec (Name, 0, + S_GET_VALUE (sp), + GBLSYM_DEF|GBLSYM_VAL); + break; + case N_UNDF | N_EXT: + VMS_Global_Symbol_Spec (stripped_name, 0, 0, GBLSYM_VAL); + break; + case N_DATA | N_EXT: + Size = VMS_Initialized_Data_Size (sp, text_siz + data_siz); + if (Size > 4) + error (_("Invalid data type for globalvalue")); + globalvalue = md_chars_to_number (Data_Segment + + S_GET_VALUE (sp) - text_siz , Size); + /* Three times for good luck. The linker seems to get confused + if there are fewer than three */ + VMS_Global_Symbol_Spec (stripped_name, 0, 0, GBLSYM_VAL); + VMS_Global_Symbol_Spec (stripped_name, 0, globalvalue, + GBLSYM_DEF|GBLSYM_VAL); + VMS_Global_Symbol_Spec (stripped_name, 0, globalvalue, + GBLSYM_DEF|GBLSYM_VAL); + break; + default: + as_warn (_("Invalid globalvalue of %s"), stripped_name); + break; + } /* switch */ + } /* if */ + if (stripped_name) free (stripped_name); /* clean up */ + } /* for */ + +} + + +/* + * Define a procedure entry pt/mask + */ +static void +VMS_Procedure_Entry_Pt (Name, Psect_Number, Psect_Offset, Entry_Mask) + char *Name; + int Psect_Number; + int Psect_Offset; + int Entry_Mask; +{ + char Local[32]; + + /* + * We are writing a GSD record + */ + Set_VMS_Object_File_Record (OBJ_S_C_GSD); + /* + * If the buffer is empty we must insert the GSD record type + */ + if (Object_Record_Offset == 0) + PUT_CHAR (OBJ_S_C_GSD); + /* + * We are writing a Procedure Entry Pt/Mask subrecord + */ + PUT_CHAR (((unsigned) Psect_Number <= 255) ? GSD_S_C_EPM : GSD_S_C_EPMW); + /* + * Data type is undefined + */ + PUT_CHAR (0); + /* + * Flags = "RELOCATABLE" and "DEFINED" + */ + PUT_SHORT (GSY_S_M_DEF | GSY_S_M_REL); + /* + * Psect Number + */ + if ((unsigned) Psect_Number <= 255) + PUT_CHAR (Psect_Number); + else + PUT_SHORT (Psect_Number); + /* + * Offset + */ + PUT_LONG (Psect_Offset); + /* + * Entry mask + */ + PUT_SHORT (Entry_Mask); + /* + * Finally, the global symbol name + */ + VMS_Case_Hack_Symbol (Name, Local); + PUT_COUNTED_STRING (Local); + /* + * Flush the buffer if it is more than 75% full + */ + if (Object_Record_Offset > (sizeof (Object_Record_Buffer) * 3 / 4)) + Flush_VMS_Object_Record_Buffer (); +} + + +/* + * Set the current location counter to a particular Psect and Offset + */ +static void +VMS_Set_Psect (Psect_Index, Offset, Record_Type) + int Psect_Index; + int Offset; + int Record_Type; +{ + /* + * We are writing a "Record_Type" record + */ + Set_VMS_Object_File_Record (Record_Type); + /* + * If the buffer is empty we must insert the record type + */ + if (Object_Record_Offset == 0) + PUT_CHAR (Record_Type); + /* + * Stack the Psect base + Offset + */ + vms_tir_stack_psect (Psect_Index, Offset, 0); + /* + * Set relocation base + */ + PUT_CHAR (TIR_S_C_CTL_SETRB); + /* + * Flush the buffer if it is more than 75% full + */ + if (Object_Record_Offset > (sizeof (Object_Record_Buffer) * 3 / 4)) + Flush_VMS_Object_Record_Buffer (); +} + + +/* + * Store repeated immediate data in current Psect + */ +static void +VMS_Store_Repeated_Data (Repeat_Count, Pointer, Size, Record_Type) + int Repeat_Count; + register char *Pointer; + int Size; + int Record_Type; +{ + + /* + * Ignore zero bytes/words/longwords + */ + switch (Size) + { + case 4: + if (Pointer[3] != 0 || Pointer[2] != 0) break; + /* else FALLTHRU */ + case 2: + if (Pointer[1] != 0) break; + /* else FALLTHRU */ + case 1: + if (Pointer[0] != 0) break; + /* zero value */ + return; + default: + break; + } + /* + * If the data is too big for a TIR_S_C_STO_RIVB sub-record + * then we do it manually + */ + if (Size > 255) + { + while (--Repeat_Count >= 0) + VMS_Store_Immediate_Data (Pointer, Size, Record_Type); + return; + } + /* + * We are writing a "Record_Type" record + */ + Set_VMS_Object_File_Record (Record_Type); + /* + * If the buffer is empty we must insert record type + */ + if (Object_Record_Offset == 0) + PUT_CHAR (Record_Type); + /* + * Stack the repeat count + */ + PUT_CHAR (TIR_S_C_STA_LW); + PUT_LONG (Repeat_Count); + /* + * And now the command and its data + */ + PUT_CHAR (TIR_S_C_STO_RIVB); + PUT_CHAR (Size); + while (--Size >= 0) + PUT_CHAR (*Pointer++); + /* + * Flush the buffer if it is more than 75% full + */ + if (Object_Record_Offset > (sizeof (Object_Record_Buffer) * 3 / 4)) + Flush_VMS_Object_Record_Buffer (); +} + + +/* + * Store a Position Independent Reference + */ +static void +VMS_Store_PIC_Symbol_Reference (Symbol, Offset, PC_Relative, + Psect, Psect_Offset, Record_Type) + symbolS *Symbol; + int Offset; + int PC_Relative; + int Psect; + int Psect_Offset; + int Record_Type; +{ + register struct VMS_Symbol *vsp = Symbol->sy_obj; + char Local[32]; + int local_sym = 0; + + /* + * We are writing a "Record_Type" record + */ + Set_VMS_Object_File_Record (Record_Type); + /* + * If the buffer is empty we must insert record type + */ + if (Object_Record_Offset == 0) + PUT_CHAR (Record_Type); + /* + * Set to the appropriate offset in the Psect. + * For a Code reference we need to fix the operand + * specifier as well, so back up 1 byte; + * for a Data reference we just store HERE. + */ + VMS_Set_Psect (Psect, + PC_Relative ? Psect_Offset - 1 : Psect_Offset, + Record_Type); + /* + * Make sure we are still generating a "Record Type" record + */ + if (Object_Record_Offset == 0) + PUT_CHAR (Record_Type); + /* + * Dispatch on symbol type (so we can stack its value) + */ + switch (S_GET_RAW_TYPE (Symbol)) + { + /* + * Global symbol + */ + case N_ABS: + local_sym = 1; + /*FALLTHRU*/ + case N_ABS | N_EXT: +#ifdef NOT_VAX_11_C_COMPATIBLE + case N_UNDF | N_EXT: + case N_DATA | N_EXT: +#endif /* NOT_VAX_11_C_COMPATIBLE */ + case N_UNDF: + case N_TEXT | N_EXT: + /* + * Get the symbol name (case hacked) + */ + VMS_Case_Hack_Symbol (S_GET_NAME (Symbol), Local); + /* + * Stack the global symbol value + */ + if (!local_sym) + { + PUT_CHAR (TIR_S_C_STA_GBL); + } + else + { + /* Local symbols have an extra field. */ + PUT_CHAR (TIR_S_C_STA_LSY); + PUT_SHORT (Current_Environment); + } + PUT_COUNTED_STRING (Local); + if (Offset) + { + /* + * Stack the longword offset + */ + PUT_CHAR (TIR_S_C_STA_LW); + PUT_LONG (Offset); + /* + * Add the two, leaving the result on the stack + */ + PUT_CHAR (TIR_S_C_OPR_ADD); + } + break; + /* + * Uninitialized local data + */ + case N_BSS: + /* + * Stack the Psect (+offset) + */ + vms_tir_stack_psect (vsp->Psect_Index, + vsp->Psect_Offset + Offset, + 0); + break; + /* + * Local text + */ + case N_TEXT: + /* + * Stack the Psect (+offset) + */ + vms_tir_stack_psect (vsp->Psect_Index, + S_GET_VALUE (Symbol) + Offset, + 0); + break; + /* + * Initialized local or global data + */ + case N_DATA: +#ifndef NOT_VAX_11_C_COMPATIBLE + case N_UNDF | N_EXT: + case N_DATA | N_EXT: +#endif /* NOT_VAX_11_C_COMPATIBLE */ + /* + * Stack the Psect (+offset) + */ + vms_tir_stack_psect (vsp->Psect_Index, + vsp->Psect_Offset + Offset, + 0); + break; + } + /* + * Store either a code or data reference + */ + PUT_CHAR (PC_Relative ? TIR_S_C_STO_PICR : TIR_S_C_STO_PIDR); + /* + * Flush the buffer if it is more than 75% full + */ + if (Object_Record_Offset > (sizeof (Object_Record_Buffer) * 3 / 4)) + Flush_VMS_Object_Record_Buffer (); +} + + +/* + * Check in the text area for an indirect pc-relative reference + * and fix it up with addressing mode 0xff [PC indirect] + * + * THIS SHOULD BE REPLACED BY THE USE OF TIR_S_C_STO_PIRR IN THE + * PIC CODE GENERATING FIXUP ROUTINE. + */ +static void +VMS_Fix_Indirect_Reference (Text_Psect, Offset, fragP, text_frag_root) + int Text_Psect; + int Offset; + register fragS *fragP; + fragS *text_frag_root; +{ + /* + * The addressing mode byte is 1 byte before the address + */ + Offset--; + /* + * Is it in THIS frag?? + */ + if ((Offset < fragP->fr_address) || + (Offset >= (fragP->fr_address + fragP->fr_fix))) + { + /* + * We need to search for the fragment containing this + * Offset + */ + for (fragP = text_frag_root; fragP; fragP = fragP->fr_next) + { + if ((Offset >= fragP->fr_address) && + (Offset < (fragP->fr_address + fragP->fr_fix))) + break; + } + /* + * If we couldn't find the frag, things are BAD!! + */ + if (fragP == 0) + error (_("Couldn't find fixup fragment when checking for indirect reference")); + } + /* + * Check for indirect PC relative addressing mode + */ + if (fragP->fr_literal[Offset - fragP->fr_address] == (char) 0xff) + { + static char Address_Mode = (char) 0xff; + + /* + * Yes: Store the indirect mode back into the image + * to fix up the damage done by STO_PICR + */ + VMS_Set_Psect (Text_Psect, Offset, OBJ_S_C_TIR); + VMS_Store_Immediate_Data (&Address_Mode, 1, OBJ_S_C_TIR); + } +} + + +/* + * If the procedure "main()" exists we have to add the instruction + * "jsb c$main_args" at the beginning to be compatible with VAX-11 "C". + * + * FIXME: the macro name `HACK_DEC_C_STARTUP' should be renamed + * to `HACK_VAXCRTL_STARTUP' because Digital's compiler + * named "DEC C" uses run-time library "DECC$SHR", but this + * startup code is for "VAXCRTL", the library for Digital's + * older "VAX C". Also, this extra code isn't needed for + * supporting gcc because it already generates the VAXCRTL + * startup call when compiling main(). The reference to + * `flag_hash_long_names' looks very suspicious too; + * probably an old-style command line option was inadvertently + * overloaded here, then blindly converted into the new one. + */ +void +vms_check_for_main () +{ + register symbolS *symbolP; +#ifdef HACK_DEC_C_STARTUP /* JF */ + register struct frchain *frchainP; + register fragS *fragP; + register fragS **prev_fragPP; + register struct fix *fixP; + register fragS *New_Frag; + int i; +#endif /* HACK_DEC_C_STARTUP */ + + symbolP = (symbolS *) symbol_find ("_main"); + if (symbolP && !S_IS_DEBUG (symbolP) && + S_IS_EXTERNAL (symbolP) && (S_GET_TYPE (symbolP) == N_TEXT)) + { +#ifdef HACK_DEC_C_STARTUP + if (!flag_hash_long_names) + { +#endif + /* + * Remember the entry point symbol + */ + Entry_Point_Symbol = symbolP; +#ifdef HACK_DEC_C_STARTUP + } + else + { + /* + * Scan all the fragment chains for the one with "_main" + * (Actually we know the fragment from the symbol, but we need + * the previous fragment so we can change its pointer) + */ + frchainP = frchain_root; + while (frchainP) + { + /* + * Scan all the fragments in this chain, remembering + * the "previous fragment" + */ + prev_fragPP = &frchainP->frch_root; + fragP = frchainP->frch_root; + while (fragP && (fragP != frchainP->frch_last)) + { + /* + * Is this the fragment? + */ + if (fragP == symbolP->sy_frag) + { + /* + * Yes: Modify the fragment by replacing + * it with a new fragment. + */ + New_Frag = (fragS *) + xmalloc (sizeof (*New_Frag) + + fragP->fr_fix + + fragP->fr_var + + 5); + /* + * The fragments are the same except + * that the "fixed" area is larger + */ + *New_Frag = *fragP; + New_Frag->fr_fix += 6; + /* + * Copy the literal data opening a hole + * 2 bytes after "_main" (i.e. just after + * the entry mask). Into which we place + * the JSB instruction. + */ + New_Frag->fr_literal[0] = fragP->fr_literal[0]; + New_Frag->fr_literal[1] = fragP->fr_literal[1]; + New_Frag->fr_literal[2] = 0x16; /* Jsb */ + New_Frag->fr_literal[3] = 0xef; + New_Frag->fr_literal[4] = 0; + New_Frag->fr_literal[5] = 0; + New_Frag->fr_literal[6] = 0; + New_Frag->fr_literal[7] = 0; + for (i = 2; i < fragP->fr_fix + fragP->fr_var; i++) + New_Frag->fr_literal[i + 6] = + fragP->fr_literal[i]; + /* + * Now replace the old fragment with the + * newly generated one. + */ + *prev_fragPP = New_Frag; + /* + * Remember the entry point symbol + */ + Entry_Point_Symbol = symbolP; + /* + * Scan the text area fixup structures + * as offsets in the fragment may have + * changed + */ + for (fixP = text_fix_root; fixP; fixP = fixP->fx_next) + { + /* + * Look for references to this + * fragment. + */ + if (fixP->fx_frag == fragP) + { + /* + * Change the fragment + * pointer + */ + fixP->fx_frag = New_Frag; + /* + * If the offset is after + * the entry mask we need + * to account for the JSB + * instruction we just + * inserted. + */ + if (fixP->fx_where >= 2) + fixP->fx_where += 6; + } + } + /* + * Scan the symbols as offsets in the + * fragment may have changed + */ + for (symbolP = symbol_rootP; + symbolP; + symbolP = symbol_next (symbolP)) + { + /* + * Look for references to this + * fragment. + */ + if (symbolP->sy_frag == fragP) + { + /* + * Change the fragment + * pointer + */ + symbolP->sy_frag = New_Frag; + /* + * If the offset is after + * the entry mask we need + * to account for the JSB + * instruction we just + * inserted. + */ + if (S_GET_VALUE (symbolP) >= 2) + S_SET_VALUE (symbolP, + S_GET_VALUE (symbolP) + 6); + } + } + /* + * Make a symbol reference to + * "_c$main_args" so we can get + * its address inserted into the + * JSB instruction. + */ + symbolP = (symbolS *) xmalloc (sizeof (*symbolP)); + S_SET_NAME (symbolP, "_C$MAIN_ARGS"); + S_SET_TYPE (symbolP, N_UNDF); + S_SET_OTHER (symbolP, 0); + S_SET_DESC (symbolP, 0); + S_SET_VALUE (symbolP, 0); + symbolP->sy_name_offset = 0; + symbolP->sy_number = 0; + symbolP->sy_obj = 0; + symbolP->sy_frag = New_Frag; + symbolP->sy_resolved = 0; + symbolP->sy_resolving = 0; + /* this actually inserts at the beginning of the list */ + symbol_append (symbol_rootP, symbolP, + &symbol_rootP, &symbol_lastP); + + symbol_rootP = symbolP; + /* + * Generate a text fixup structure + * to get "_c$main_args" stored into the + * JSB instruction. + */ + fixP = (struct fix *) xmalloc (sizeof (*fixP)); + fixP->fx_frag = New_Frag; + fixP->fx_where = 4; + fixP->fx_addsy = symbolP; + fixP->fx_subsy = 0; + fixP->fx_offset = 0; + fixP->fx_size = 4; + fixP->fx_pcrel = 1; + fixP->fx_next = text_fix_root; + text_fix_root = fixP; + /* + * Now make sure we exit from the loop + */ + frchainP = 0; + break; + } + /* + * Try the next fragment + */ + prev_fragPP = &fragP->fr_next; + fragP = fragP->fr_next; + } + /* + * Try the next fragment chain + */ + if (frchainP) + frchainP = frchainP->frch_next; + } + } +#endif /* HACK_DEC_C_STARTUP */ + } +} + + +/* + * Beginning of vms_write_object_file(). + */ + +static +struct vms_obj_state { + + /* Next program section index to use. */ + int psect_number; + + /* Psect index for code. Always ends up #0. */ + int text_psect; + + /* Psect index for initialized static variables. */ + int data_psect; + + /* Psect index for uninitialized static variables. */ + int bss_psect; + + /* Psect index for static constructors. */ + int ctors_psect; + + /* Psect index for static destructors. */ + int dtors_psect; + + /* Number of bytes used for local symbol data. */ + int local_initd_data_size; + + /* Dynamic buffer for initialized data. */ + char *data_segment; + +} vms_obj_state; + +#define Psect_Number vms_obj_state.psect_number +#define Text_Psect vms_obj_state.text_psect +#define Data_Psect vms_obj_state.data_psect +#define Bss_Psect vms_obj_state.bss_psect +#define Ctors_Psect vms_obj_state.ctors_psect +#define Dtors_Psect vms_obj_state.dtors_psect +#define Local_Initd_Data_Size vms_obj_state.local_initd_data_size +#define Data_Segment vms_obj_state.data_segment + + +#define IS_GXX_VTABLE(symP) (strncmp (S_GET_NAME (symP), "__vt.", 5) == 0) +#define IS_GXX_XTOR(symP) (strncmp (S_GET_NAME (symP), "__GLOBAL_.", 10) == 0) +#define XTOR_SIZE 4 + + +/* Perform text segment fixups. */ + +static void +vms_fixup_text_section (text_siz, text_frag_root, data_frag_root) + unsigned text_siz; + struct frag *text_frag_root; + struct frag *data_frag_root; +{ + register fragS *fragP; + register struct fix *fixP; + offsetT dif; + + /* Scan the text fragments. */ + for (fragP = text_frag_root; fragP; fragP = fragP->fr_next) + { + /* Stop if we get to the data fragments. */ + if (fragP == data_frag_root) + break; + /* Ignore fragments with no data. */ + if ((fragP->fr_fix == 0) && (fragP->fr_var == 0)) + continue; + /* Go the the appropriate offset in the Text Psect. */ + VMS_Set_Psect (Text_Psect, fragP->fr_address, OBJ_S_C_TIR); + /* Store the "fixed" part. */ + if (fragP->fr_fix) + VMS_Store_Immediate_Data (fragP->fr_literal, + fragP->fr_fix, + OBJ_S_C_TIR); + /* Store the "variable" part. */ + if (fragP->fr_var && fragP->fr_offset) + VMS_Store_Repeated_Data (fragP->fr_offset, + fragP->fr_literal + fragP->fr_fix, + fragP->fr_var, + OBJ_S_C_TIR); + } /* text frag loop */ + + /* + * Now we go through the text segment fixups and generate + * TIR records to fix up addresses within the Text Psect. + */ + for (fixP = text_fix_root; fixP; fixP = fixP->fx_next) + { + /* We DO handle the case of "Symbol - Symbol" as + long as it is in the same segment. */ + if (fixP->fx_subsy && fixP->fx_addsy) + { + /* They need to be in the same segment. */ + if (S_GET_RAW_TYPE (fixP->fx_subsy) != + S_GET_RAW_TYPE (fixP->fx_addsy)) + error (_("Fixup data addsy and subsy don't have the same type")); + /* And they need to be in one that we can check the psect on. */ + if ((S_GET_TYPE (fixP->fx_addsy) != N_DATA) && + (S_GET_TYPE (fixP->fx_addsy) != N_TEXT)) + error (_("Fixup data addsy and subsy don't have an appropriate type")); + /* This had better not be PC relative! */ + if (fixP->fx_pcrel) + error (_("Fixup data is erroneously \"pcrel\"")); + /* Subtract their values to get the difference. */ + dif = S_GET_VALUE (fixP->fx_addsy) - S_GET_VALUE (fixP->fx_subsy); + md_number_to_chars (Local, (valueT)dif, fixP->fx_size); + /* Now generate the fixup object records; + set the psect and store the data. */ + VMS_Set_Psect (Text_Psect, + fixP->fx_where + fixP->fx_frag->fr_address, + OBJ_S_C_TIR); + VMS_Store_Immediate_Data (Local, + fixP->fx_size, + OBJ_S_C_TIR); + continue; /* done with this fixup */ + } /* if fx_subsy && fx_addsy */ + /* Size will HAVE to be "long". */ + if (fixP->fx_size != 4) + error (_("Fixup datum is not a longword")); + /* Symbol must be "added" (if it is ever + subtracted we can fix this assumption). */ + if (fixP->fx_addsy == 0) + error (_("Fixup datum is not \"fixP->fx_addsy\"")); + /* Store the symbol value in a PIC fashion. */ + VMS_Store_PIC_Symbol_Reference (fixP->fx_addsy, + fixP->fx_offset, + fixP->fx_pcrel, + Text_Psect, + fixP->fx_where + fixP->fx_frag->fr_address, + OBJ_S_C_TIR); + /* + * Check for indirect address reference, which has to be fixed up + * (as the linker will screw it up with TIR_S_C_STO_PICR)... + */ + if (fixP->fx_pcrel) + VMS_Fix_Indirect_Reference (Text_Psect, + fixP->fx_where + fixP->fx_frag->fr_address, + fixP->fx_frag, + text_frag_root); + } /* text fix loop */ +} + + +/* Create a buffer holding the data segment. */ + +static void +synthesize_data_segment (data_siz, text_siz, data_frag_root) + unsigned data_siz, text_siz; + struct frag *data_frag_root; +{ + register fragS *fragP; + char *fill_literal; + long fill_size, count, i; + + /* Allocate the data segment. */ + Data_Segment = (char *) xmalloc (data_siz); + /* Run through the data fragments, filling in the segment. */ + for (fragP = data_frag_root; fragP; fragP = fragP->fr_next) + { + i = fragP->fr_address - text_siz; + if (fragP->fr_fix) + memcpy (Data_Segment + i, fragP->fr_literal, fragP->fr_fix); + i += fragP->fr_fix; + + if ((fill_size = fragP->fr_var) != 0) + { + fill_literal = fragP->fr_literal + fragP->fr_fix; + for (count = fragP->fr_offset; count; count--) + { + memcpy (Data_Segment + i, fill_literal, fill_size); + i += fill_size; + } + } + } /* data frag loop */ + + return; +} + + +/* Perform data segment fixups. */ + +static void +vms_fixup_data_section (data_siz, text_siz) + unsigned data_siz, text_siz; +{ + register struct VMS_Symbol *vsp; + register struct fix *fixP; + register symbolS *sp; + addressT fr_address; + offsetT dif; + valueT val; + + /* Run through all the data symbols and store the data. */ + for (vsp = VMS_Symbols; vsp; vsp = vsp->Next) + { + /* Ignore anything other than data symbols. */ + if (S_GET_TYPE (vsp->Symbol) != N_DATA) + continue; + /* Set the Psect + Offset. */ + VMS_Set_Psect (vsp->Psect_Index, + vsp->Psect_Offset, + OBJ_S_C_TIR); + /* Store the data. */ + val = S_GET_VALUE (vsp->Symbol); + VMS_Store_Immediate_Data (Data_Segment + val - text_siz, + vsp->Size, + OBJ_S_C_TIR); + } /* N_DATA symbol loop */ + + /* + * Now we go through the data segment fixups and generate + * TIR records to fix up addresses within the Data Psects. + */ + for (fixP = data_fix_root; fixP; fixP = fixP->fx_next) + { + /* Find the symbol for the containing datum. */ + for (vsp = VMS_Symbols; vsp; vsp = vsp->Next) + { + /* Only bother with Data symbols. */ + sp = vsp->Symbol; + if (S_GET_TYPE (sp) != N_DATA) + continue; + /* Ignore symbol if After fixup. */ + val = S_GET_VALUE (sp); + fr_address = fixP->fx_frag->fr_address; + if (val > fixP->fx_where + fr_address) + continue; + /* See if the datum is here. */ + if (val + vsp->Size <= fixP->fx_where + fr_address) + continue; + /* We DO handle the case of "Symbol - Symbol" as + long as it is in the same segment. */ + if (fixP->fx_subsy && fixP->fx_addsy) + { + /* They need to be in the same segment. */ + if (S_GET_RAW_TYPE (fixP->fx_subsy) != + S_GET_RAW_TYPE (fixP->fx_addsy)) + error (_("Fixup data addsy and subsy don't have the same type")); + /* And they need to be in one that we can check the psect on. */ + if ((S_GET_TYPE (fixP->fx_addsy) != N_DATA) && + (S_GET_TYPE (fixP->fx_addsy) != N_TEXT)) + error (_("Fixup data addsy and subsy don't have an appropriate type")); + /* This had better not be PC relative! */ + if (fixP->fx_pcrel) + error (_("Fixup data is erroneously \"pcrel\"")); + /* Subtract their values to get the difference. */ + dif = S_GET_VALUE (fixP->fx_addsy) - S_GET_VALUE (fixP->fx_subsy); + md_number_to_chars (Local, (valueT)dif, fixP->fx_size); + /* + * Now generate the fixup object records; + * set the psect and store the data. + */ + VMS_Set_Psect (vsp->Psect_Index, + fr_address + fixP->fx_where + - val + vsp->Psect_Offset, + OBJ_S_C_TIR); + VMS_Store_Immediate_Data (Local, + fixP->fx_size, + OBJ_S_C_TIR); + break; /* done with this fixup */ + } + /* Size will HAVE to be "long". */ + if (fixP->fx_size != 4) + error (_("Fixup datum is not a longword")); + /* Symbol must be "added" (if it is ever + subtracted we can fix this assumption). */ + if (fixP->fx_addsy == 0) + error (_("Fixup datum is not \"fixP->fx_addsy\"")); + /* Store the symbol value in a PIC fashion. */ + VMS_Store_PIC_Symbol_Reference (fixP->fx_addsy, + fixP->fx_offset, + fixP->fx_pcrel, + vsp->Psect_Index, + fr_address + fixP->fx_where + - val + vsp->Psect_Offset, + OBJ_S_C_TIR); + /* Done with this fixup. */ + break; + } /* vms_symbol loop */ + + } /* data fix loop */ +} + +/* Perform ctors/dtors segment fixups. */ + +static void +vms_fixup_xtors_section (symbols, sect_no) + struct VMS_Symbol *symbols; + int sect_no; +{ + register struct VMS_Symbol *vsp; + + /* Run through all the symbols and store the data. */ + for (vsp = symbols; vsp; vsp = vsp->Next) + { + register symbolS *sp; + + /* Set relocation base. */ + VMS_Set_Psect (vsp->Psect_Index, vsp->Psect_Offset, OBJ_S_C_TIR); + + sp = vsp->Symbol; + /* Stack the Psect base with its offset. */ + VMS_Set_Data (Text_Psect, S_GET_VALUE (sp), OBJ_S_C_TIR, 0); + } + /* Flush the buffer if it is more than 75% full. */ + if (Object_Record_Offset > (sizeof (Object_Record_Buffer) * 3 / 4)) + Flush_VMS_Object_Record_Buffer (); + + return; +} + + +/* Define symbols for the linker. */ + +static void +global_symbol_directory (text_siz, data_siz) + unsigned text_siz, data_siz; +{ + register fragS *fragP; + register symbolS *sp; + register struct VMS_Symbol *vsp; + int Globalref, define_as_global_symbol; + +#if 0 + /* The g++ compiler does not write out external references to + vtables correctly. Check for this and holler if we see it + happening. If that compiler bug is ever fixed we can remove + this. + + (Jun'95: gcc 2.7.0's cc1plus still exhibits this behavior.) + + This was reportedly fixed as of June 2, 1998. */ + + for (sp = symbol_rootP; sp; sp = symbol_next (sp)) + if (S_GET_RAW_TYPE (sp) == N_UNDF && IS_GXX_VTABLE (sp)) + { + S_SET_TYPE (sp, N_UNDF | N_EXT); + S_SET_OTHER (sp, 1); + as_warn (_("g++ wrote an extern reference to `%s' as a routine.\nI will fix it, but I hope that it was note really a routine."), + S_GET_NAME (sp)); + } +#endif + + /* + * Now scan the symbols and emit the appropriate GSD records + */ + for (sp = symbol_rootP; sp; sp = symbol_next (sp)) + { + define_as_global_symbol = 0; + vsp = 0; + /* Dispatch on symbol type. */ + switch (S_GET_RAW_TYPE (sp)) + { + + /* Global uninitialized data. */ + case N_UNDF | N_EXT: + /* Make a VMS data symbol entry. */ + vsp = (struct VMS_Symbol *) xmalloc (sizeof *vsp); + vsp->Symbol = sp; + vsp->Size = S_GET_VALUE (sp); + vsp->Psect_Index = Psect_Number++; + vsp->Psect_Offset = 0; + vsp->Next = VMS_Symbols; + VMS_Symbols = vsp; + sp->sy_obj = vsp; + /* Make the psect for this data. */ + Globalref = VMS_Psect_Spec (S_GET_NAME (sp), + vsp->Size, + S_GET_OTHER (sp) ? ps_CONST : ps_COMMON, + vsp); + if (Globalref) + Psect_Number--; +#ifdef NOT_VAX_11_C_COMPATIBLE + define_as_global_symbol = 1; +#else + /* See if this is an external vtable. We want to help the + linker find these things in libraries, so we make a symbol + reference. This is not compatible with VAX-C usage for + variables, but since vtables are only used internally by + g++, we can get away with this hack. */ + define_as_global_symbol = IS_GXX_VTABLE (sp); +#endif + break; + + /* Local uninitialized data. */ + case N_BSS: + /* Make a VMS data symbol entry. */ + vsp = (struct VMS_Symbol *) xmalloc (sizeof *vsp); + vsp->Symbol = sp; + vsp->Size = 0; + vsp->Psect_Index = Bss_Psect; + vsp->Psect_Offset = S_GET_VALUE (sp) - bss_address_frag.fr_address; + vsp->Next = VMS_Symbols; + VMS_Symbols = vsp; + sp->sy_obj = vsp; + break; + + /* Global initialized data. */ + case N_DATA | N_EXT: + /* Make a VMS data symbol entry. */ + vsp = (struct VMS_Symbol *) xmalloc (sizeof *vsp); + vsp->Symbol = sp; + vsp->Size = VMS_Initialized_Data_Size (sp, text_siz + data_siz); + vsp->Psect_Index = Psect_Number++; + vsp->Psect_Offset = 0; + vsp->Next = VMS_Symbols; + VMS_Symbols = vsp; + sp->sy_obj = vsp; + /* Make its psect. */ + Globalref = VMS_Psect_Spec (S_GET_NAME (sp), + vsp->Size, + S_GET_OTHER (sp) ? ps_CONST : ps_COMMON, + vsp); + if (Globalref) + Psect_Number--; +#ifdef NOT_VAX_11_C_COMPATIBLE + define_as_global_symbol = 1; +#else + /* See N_UNDF|N_EXT above for explanation. */ + define_as_global_symbol = IS_GXX_VTABLE (sp); +#endif + break; + + /* Local initialized data. */ + case N_DATA: + { + char *sym_name = S_GET_NAME (sp); + + /* Always suppress local numeric labels. */ + if (sym_name && strcmp (sym_name, FAKE_LABEL_NAME) == 0) + break; + + /* Make a VMS data symbol entry. */ + vsp = (struct VMS_Symbol *) xmalloc (sizeof *vsp); + vsp->Symbol = sp; + vsp->Size = VMS_Initialized_Data_Size (sp, text_siz + data_siz); + vsp->Psect_Index = Data_Psect; + vsp->Psect_Offset = Local_Initd_Data_Size; + Local_Initd_Data_Size += vsp->Size; + vsp->Next = VMS_Symbols; + VMS_Symbols = vsp; + sp->sy_obj = vsp; + } + break; + + /* Global Text definition. */ + case N_TEXT | N_EXT: + { + + if (IS_GXX_XTOR (sp)) + { + vsp = (struct VMS_Symbol *) xmalloc (sizeof *vsp); + vsp->Symbol = sp; + vsp->Size = XTOR_SIZE; + sp->sy_obj = vsp; + switch ((S_GET_NAME (sp))[10]) + { + case 'I': + vsp->Psect_Index = Ctors_Psect; + vsp->Psect_Offset = (Ctors_Symbols==0)?0:(Ctors_Symbols->Psect_Offset+XTOR_SIZE); + vsp->Next = Ctors_Symbols; + Ctors_Symbols = vsp; + break; + case 'D': + vsp->Psect_Index = Dtors_Psect; + vsp->Psect_Offset = (Dtors_Symbols==0)?0:(Dtors_Symbols->Psect_Offset+XTOR_SIZE); + vsp->Next = Dtors_Symbols; + Dtors_Symbols = vsp; + break; + case 'G': + as_warn (_("Can't handle global xtors symbols yet.")); + break; + default: + as_warn (_("Unknown %s"), S_GET_NAME (sp)); + break; + } + } + else + { + unsigned short Entry_Mask; + + /* Get the entry mask. */ + fragP = sp->sy_frag; + /* First frag might be empty if we're generating listings. + So skip empty rs_fill frags. */ + while (fragP && fragP->fr_type == rs_fill && fragP->fr_fix == 0) + fragP = fragP->fr_next; + + /* If first frag doesn't contain the data, what do we do? + If it's possibly smaller than two bytes, that would + imply that the entry mask is not stored where we're + expecting it. + + If you can find a test case that triggers this, report + it (and tell me what the entry mask field ought to be), + and I'll try to fix it. KR */ + if (fragP->fr_fix < 2) + abort (); + + Entry_Mask = (fragP->fr_literal[0] & 0x00ff) | + ((fragP->fr_literal[1] & 0x00ff) << 8); + /* Define the procedure entry point. */ + VMS_Procedure_Entry_Pt (S_GET_NAME (sp), + Text_Psect, + S_GET_VALUE (sp), + Entry_Mask); + } + break; + } + + /* Local Text definition. */ + case N_TEXT: + /* Make a VMS data symbol entry. */ + if (Text_Psect != -1) + { + vsp = (struct VMS_Symbol *) xmalloc (sizeof *vsp); + vsp->Symbol = sp; + vsp->Size = 0; + vsp->Psect_Index = Text_Psect; + vsp->Psect_Offset = S_GET_VALUE (sp); + vsp->Next = VMS_Symbols; + VMS_Symbols = vsp; + sp->sy_obj = vsp; + } + break; + + /* Global Reference. */ + case N_UNDF: + /* Make a GSD global symbol reference record. */ + VMS_Global_Symbol_Spec (S_GET_NAME (sp), + 0, + 0, + GBLSYM_REF); + break; + + /* Absolute symbol. */ + case N_ABS: + case N_ABS | N_EXT: + /* gcc doesn't generate these; + VMS_Emit_Globalvalue handles them though. */ + vsp = (struct VMS_Symbol *) xmalloc (sizeof *vsp); + vsp->Symbol = sp; + vsp->Size = 4; /* always assume 32 bits */ + vsp->Psect_Index = 0; + vsp->Psect_Offset = S_GET_VALUE (sp); + vsp->Next = VMS_Symbols; + VMS_Symbols = vsp; + sp->sy_obj = vsp; + break; + + /* Anything else. */ + default: + /* Ignore STAB symbols, including .stabs emitted by g++. */ + if (S_IS_DEBUG (sp) || (S_GET_TYPE (sp) == 22)) + break; + /* + * Error otherwise. + */ + as_tsktsk (_("unhandled stab type %d"), S_GET_TYPE (sp)); + break; + } + + /* Global symbols have different linkage than external variables. */ + if (define_as_global_symbol) + VMS_Global_Symbol_Spec (S_GET_NAME (sp), + vsp->Psect_Index, + 0, + GBLSYM_DEF); + } + + return; +} + + +/* Output debugger symbol table information for symbols which + are local to a specific routine. */ + +static void +local_symbols_DST (s0P, Current_Routine) + symbolS *s0P, *Current_Routine; +{ + symbolS *s1P; + char *s0P_name, *pnt0, *pnt1; + + s0P_name = S_GET_NAME (s0P); + if (*s0P_name++ != '_') + return; + + for (s1P = Current_Routine; s1P; s1P = symbol_next (s1P)) + { +#if 0 /* redundant; RAW_TYPE != N_FUN suffices */ + if (!S_IS_DEBUG (s1P)) + continue; +#endif + if (S_GET_RAW_TYPE (s1P) != N_FUN) + continue; + pnt0 = s0P_name; + pnt1 = S_GET_NAME (s1P); + /* We assume the two strings are never exactly equal... */ + while (*pnt0++ == *pnt1++) + { + } + /* Found it if s0P name is exhausted and s1P name has ":F" or ":f" next. + Note: both pointers have advanced one past the non-matching char. */ + if ((*pnt1 == 'F' || *pnt1 == 'f') && *--pnt1 == ':' && *--pnt0 == '\0') + { + Define_Routine (s1P, 0, Current_Routine, Text_Psect); + return; + } + } +} + + +/* Construct and output the debug symbol table. */ + +static void +vms_build_DST (text_siz) + unsigned text_siz; +{ + register symbolS *symbolP; + symbolS *Current_Routine = 0; + struct input_file *Cur_File = 0; + offsetT Cur_Offset = -1; + int Cur_Line_Number = 0; + int File_Number = 0; + int Debugger_Offset = 0; + int file_available; + int dsc; + offsetT val; + + /* Write the Traceback Begin Module record. */ + VMS_TBT_Module_Begin (); + + /* + * Output debugging info for global variables and static variables + * that are not specific to one routine. We also need to examine + * all stabs directives, to find the definitions to all of the + * advanced data types, and this is done by VMS_LSYM_Parse. This + * needs to be done before any definitions are output to the object + * file, since there can be forward references in the stabs + * directives. When through with parsing, the text of the stabs + * directive is altered, with the definitions removed, so that later + * passes will see directives as they would be written if the type + * were already defined. + * + * We also look for files and include files, and make a list of + * them. We examine the source file numbers to establish the actual + * lines that code was generated from, and then generate offsets. + */ + VMS_LSYM_Parse (); + for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP)) + { + /* Only deal with STAB symbols here. */ + if (!S_IS_DEBUG (symbolP)) + continue; + /* + * Dispatch on STAB type. + */ + switch (S_GET_RAW_TYPE (symbolP)) + { + case N_SLINE: + dsc = S_GET_DESC (symbolP); + if (dsc > Cur_File->max_line) + Cur_File->max_line = dsc; + if (dsc < Cur_File->min_line) + Cur_File->min_line = dsc; + break; + case N_SO: + Cur_File = find_file (symbolP); + Cur_File->flag = 1; + Cur_File->min_line = 1; + break; + case N_SOL: + Cur_File = find_file (symbolP); + break; + case N_GSYM: + VMS_GSYM_Parse (symbolP, Text_Psect); + break; + case N_LCSYM: + VMS_LCSYM_Parse (symbolP, Text_Psect); + break; + case N_FUN: /* For static constant symbols */ + case N_STSYM: + VMS_STSYM_Parse (symbolP, Text_Psect); + break; + default: + break; + } /* switch */ + } /* for */ + + /* + * Now we take a quick sweep through the files and assign offsets + * to each one. This will essentially be the starting line number to + * the debugger for each file. Output the info for the debugger to + * specify the files, and then tell it how many lines to use. + */ + for (Cur_File = file_root; Cur_File; Cur_File = Cur_File->next) + { + if (Cur_File->max_line == 0) + continue; + if ((strncmp (Cur_File->name, "GNU_GXX_INCLUDE:", 16) == 0) && + !flag_debug) + continue; + if ((strncmp (Cur_File->name, "GNU_CC_INCLUDE:", 15) == 0) && + !flag_debug) + continue; + /* show a few extra lines at the start of the region selected */ + if (Cur_File->min_line > 2) + Cur_File->min_line -= 2; + Cur_File->offset = Debugger_Offset - Cur_File->min_line + 1; + Debugger_Offset += Cur_File->max_line - Cur_File->min_line + 1; + if (Cur_File->same_file_fpnt) + { + Cur_File->file_number = Cur_File->same_file_fpnt->file_number; + } + else + { + Cur_File->file_number = ++File_Number; + file_available = VMS_TBT_Source_File (Cur_File->name, + Cur_File->file_number); + if (!file_available) + { + Cur_File->file_number = 0; + File_Number--; + continue; + } + } + VMS_TBT_Source_Lines (Cur_File->file_number, + Cur_File->min_line, + Cur_File->max_line - Cur_File->min_line + 1); + } /* for */ + Cur_File = (struct input_file *) NULL; + + /* + * Scan the symbols and write out the routines + * (this makes the assumption that symbols are in + * order of ascending text segment offset) + */ + for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP)) + { + /* + * Deal with text symbols. + */ + if (!S_IS_DEBUG (symbolP) && S_GET_TYPE (symbolP) == N_TEXT) + { + /* + * Ignore symbols starting with "L", as they are local symbols. + */ + if (*S_GET_NAME (symbolP) == 'L') + continue; + /* + * If there is a routine start defined, terminate it. + */ + if (Current_Routine) + VMS_TBT_Routine_End (text_siz, Current_Routine); + + /* + * Check for & skip dummy labels like "gcc_compiled.". + * They're identified by the IN_DEFAULT_SECTION flag. + */ + if ((S_GET_OTHER (symbolP) & IN_DEFAULT_SECTION) != 0 && + S_GET_VALUE (symbolP) == 0) + continue; + /* + * Store the routine begin traceback info. + */ + VMS_TBT_Routine_Begin (symbolP, Text_Psect); + Current_Routine = symbolP; + /* + * Define symbols local to this routine. + */ + local_symbols_DST (symbolP, Current_Routine); + /* + * Done + */ + continue; + + } + /* + * Deal with STAB symbols. + */ + else if (S_IS_DEBUG (symbolP)) + { + /* + * Dispatch on STAB type. + */ + switch (S_GET_RAW_TYPE (symbolP)) + { + /* + * Line number + */ + case N_SLINE: + /* Offset the line into the correct portion of the file. */ + if (Cur_File->file_number == 0) + break; + val = S_GET_VALUE (symbolP); + /* Sometimes the same offset gets several source lines + assigned to it. We should be selective about which + lines we allow, we should prefer lines that are in + the main source file when debugging inline functions. */ + if (val == Cur_Offset && Cur_File->file_number != 1) + break; + + /* calculate actual debugger source line */ + dsc = S_GET_DESC (symbolP) + Cur_File->offset; + S_SET_DESC (symbolP, dsc); + /* + * Define PC/Line correlation. + */ + if (Cur_Offset == -1) + { + /* + * First N_SLINE; set up initial correlation. + */ + VMS_TBT_Line_PC_Correlation (dsc, + val, + Text_Psect, + 0); + } + else if ((dsc - Cur_Line_Number) <= 0) + { + /* + * Line delta is not +ve, we need to close the line and + * start a new PC/Line correlation. + */ + VMS_TBT_Line_PC_Correlation (0, + val - Cur_Offset, + 0, + -1); + VMS_TBT_Line_PC_Correlation (dsc, + val, + Text_Psect, + 0); + } + else + { + /* + * Line delta is +ve, all is well. + */ + VMS_TBT_Line_PC_Correlation (dsc - Cur_Line_Number, + val - Cur_Offset, + 0, + 1); + } + /* Update the current line/PC info. */ + Cur_Line_Number = dsc; + Cur_Offset = val; + break; + + /* + * Source file + */ + case N_SO: + /* Remember that we had a source file and emit + the source file debugger record. */ + Cur_File = find_file (symbolP); + break; + + case N_SOL: + /* We need to make sure that we are really in the actual + source file when we compute the maximum line number. + Otherwise the debugger gets really confused. */ + Cur_File = find_file (symbolP); + break; + + default: + break; + } /* switch */ + } /* if (IS_DEBUG) */ + } /* for */ + + /* + * If there is a routine start defined, terminate it + * (and the line numbers). + */ + if (Current_Routine) + { + /* Terminate the line numbers. */ + VMS_TBT_Line_PC_Correlation (0, + text_siz - S_GET_VALUE (Current_Routine), + 0, + -1); + /* Terminate the routine. */ + VMS_TBT_Routine_End (text_siz, Current_Routine); + } + + /* Write the Traceback End Module TBT record. */ + VMS_TBT_Module_End (); +} + + +/* Write a VAX/VMS object file (everything else has been done!). */ + +void +vms_write_object_file (text_siz, data_siz, bss_siz, text_frag_root, + data_frag_root) + unsigned text_siz; + unsigned data_siz; + unsigned bss_siz; + fragS *text_frag_root; + fragS *data_frag_root; +{ + register struct VMS_Symbol *vsp; + + /* + * Initialize program section indices; values get updated later. + */ + Psect_Number = 0; /* next Psect Index to use */ + Text_Psect = -1; /* Text Psect Index */ + Data_Psect = -2; /* Data Psect Index JF: Was -1 */ + Bss_Psect = -3; /* Bss Psect Index JF: Was -1 */ + Ctors_Psect = -4; /* Ctors Psect Index */ + Dtors_Psect = -5; /* Dtors Psect Index */ + /* Initialize other state variables. */ + Data_Segment = 0; + Local_Initd_Data_Size = 0; + + /* + * Create the actual output file and populate it with required + * "module header" information. + */ + Create_VMS_Object_File (); + Write_VMS_MHD_Records (); + + /* + * Create the Data segment: + * + * Since this is REALLY hard to do any other way, + * we actually manufacture the data segment and + * then store the appropriate values out of it. + * We need to generate this early, so that globalvalues + * can be properly emitted. + */ + if (data_siz > 0) + synthesize_data_segment (data_siz, text_siz, data_frag_root); + + + /******* Global Symbol Directory *******/ + + /* + * Emit globalvalues now. We must do this before the text psect is + * defined, or we will get linker warnings about multiply defined + * symbols. All of the globalvalues "reference" psect 0, although + * it really does not have anything to do with it. + */ + VMS_Emit_Globalvalues (text_siz, data_siz, Data_Segment); + /* + * Define the Text Psect + */ + Text_Psect = Psect_Number++; + VMS_Psect_Spec ("$code", text_siz, ps_TEXT, 0); + /* + * Define the BSS Psect + */ + if (bss_siz > 0) + { + Bss_Psect = Psect_Number++; + VMS_Psect_Spec ("$uninitialized_data", bss_siz, ps_DATA, 0); + } + /* + * Define symbols to the linker. + */ + global_symbol_directory (text_siz, data_siz); + /* + * Define the Data Psect + */ + if (data_siz > 0 && Local_Initd_Data_Size > 0) + { + Data_Psect = Psect_Number++; + VMS_Psect_Spec ("$data", Local_Initd_Data_Size, ps_DATA, 0); + /* + * Local initialized data (N_DATA) symbols need to be updated to the + * proper value of Data_Psect now that it's actually been defined. + * (A dummy value was used in global_symbol_directory() above.) + */ + for (vsp = VMS_Symbols; vsp; vsp = vsp->Next) + if (vsp->Psect_Index < 0 && S_GET_RAW_TYPE (vsp->Symbol) == N_DATA) + vsp->Psect_Index = Data_Psect; + } + + + if (Ctors_Symbols != 0) + { + char *ps_name = "$ctors"; + Ctors_Psect = Psect_Number++; + VMS_Psect_Spec (ps_name, Ctors_Symbols->Psect_Offset + XTOR_SIZE, + ps_CTORS, 0); + VMS_Global_Symbol_Spec (ps_name, Ctors_Psect, + 0, GBLSYM_DEF|GBLSYM_WEAK); + for (vsp = Ctors_Symbols; vsp; vsp = vsp->Next) + vsp->Psect_Index = Ctors_Psect; + } + + if (Dtors_Symbols != 0) + { + char *ps_name = "$dtors"; + Dtors_Psect = Psect_Number++; + VMS_Psect_Spec (ps_name, Dtors_Symbols->Psect_Offset + XTOR_SIZE, + ps_DTORS, 0); + VMS_Global_Symbol_Spec (ps_name, Dtors_Psect, + 0, GBLSYM_DEF|GBLSYM_WEAK); + for (vsp = Dtors_Symbols; vsp; vsp = vsp->Next) + vsp->Psect_Index = Dtors_Psect; + } + + /******* Text Information and Relocation Records *******/ + + /* + * Write the text segment data + */ + if (text_siz > 0) + vms_fixup_text_section (text_siz, text_frag_root, data_frag_root); + /* + * Write the data segment data, then discard it. + */ + if (data_siz > 0) + { + vms_fixup_data_section (data_siz, text_siz); + free (Data_Segment), Data_Segment = 0; + } + + if (Ctors_Symbols != 0) + { + vms_fixup_xtors_section (Ctors_Symbols, Ctors_Psect); + } + + if (Dtors_Symbols != 0) + { + vms_fixup_xtors_section (Dtors_Symbols, Dtors_Psect); + } + + + /******* Debugger Symbol Table Records *******/ + + vms_build_DST (text_siz); + + + /******* Wrap things up *******/ + + /* + * Write the End Of Module record + */ + if (Entry_Point_Symbol) + Write_VMS_EOM_Record (Text_Psect, S_GET_VALUE (Entry_Point_Symbol)); + else + Write_VMS_EOM_Record (-1, (valueT) 0); + + /* + * All done, close the object file + */ + Close_VMS_Object_File (); +} + +/* end of obj-vms.c */ |