diff options
Diffstat (limited to 'contrib/gcc/vmsdbgout.c')
| -rw-r--r-- | contrib/gcc/vmsdbgout.c | 1734 |
1 files changed, 1734 insertions, 0 deletions
diff --git a/contrib/gcc/vmsdbgout.c b/contrib/gcc/vmsdbgout.c new file mode 100644 index 0000000..d8ed683 --- /dev/null +++ b/contrib/gcc/vmsdbgout.c @@ -0,0 +1,1734 @@ +/* Output VMS debug format symbol table information from GCC. + Copyright (C) 1987, 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998, + 1999, 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc. + Contributed by Douglas B. Rupp (rupp@gnat.com). + Updated by Bernard W. Giroud (bgiroud@users.sourceforge.net). + +This file is part of GCC. + +GCC 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. + +GCC 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 GCC; see the file COPYING. If not, write to the Free +Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301, USA. */ + +#include "config.h" +#include "system.h" +#include "coretypes.h" +#include "tm.h" + +#ifdef VMS_DEBUGGING_INFO +#include "tree.h" +#include "version.h" +#include "flags.h" +#include "rtl.h" +#include "output.h" +#include "vmsdbg.h" +#include "debug.h" +#include "langhooks.h" +#include "function.h" +#include "target.h" + +/* Difference in seconds between the VMS Epoch and the Unix Epoch */ +static const long long vms_epoch_offset = 3506716800ll; + +/* NOTE: In the comments in this file, many references are made to "Debug + Symbol Table". This term is abbreviated as `DST' throughout the remainder + of this file. */ + +typedef struct dst_line_info_struct *dst_line_info_ref; + +/* Each entry in the line_info_table maintains the file and + line number associated with the label generated for that + entry. The label gives the PC value associated with + the line number entry. */ +typedef struct dst_line_info_struct +{ + unsigned long dst_file_num; + unsigned long dst_line_num; +} +dst_line_info_entry; + +typedef struct dst_file_info_struct *dst_file_info_ref; + +typedef struct dst_file_info_struct +{ + char *file_name; + unsigned int max_line; + unsigned int listing_line_start; + long long cdt; + long ebk; + short ffb; + char rfo; + char flen; +} +dst_file_info_entry; + +/* How to start an assembler comment. */ +#ifndef ASM_COMMENT_START +#define ASM_COMMENT_START ";#" +#endif + +/* Maximum size (in bytes) of an artificially generated label. */ +#define MAX_ARTIFICIAL_LABEL_BYTES 30 + +/* Make sure we know the sizes of the various types debug can describe. These + are only defaults. If the sizes are different for your target, you should + override these values by defining the appropriate symbols in your tm.h + file. */ +#ifndef PTR_SIZE +#define PTR_SIZE 4 /* Must be 32 bits for VMS debug info */ +#endif + +/* Pointer to a structure of filenames referenced by this compilation unit. */ +static dst_file_info_ref file_info_table; + +/* Total number of entries in the table (i.e. array) pointed to by + `file_info_table'. This is the *total* and includes both used and unused + slots. */ +static unsigned int file_info_table_allocated; + +/* Number of entries in the file_info_table which are actually in use. */ +static unsigned int file_info_table_in_use; + +/* Size (in elements) of increments by which we may expand the filename + table. */ +#define FILE_TABLE_INCREMENT 64 + +/* A structure to hold basic information for the VMS end + routine. */ + +typedef struct vms_func_struct +{ + const char *vms_func_name; + unsigned funcdef_number; +} +vms_func_node; + +typedef struct vms_func_struct *vms_func_ref; + +static unsigned int func_table_allocated; +static unsigned int func_table_in_use; +#define FUNC_TABLE_INCREMENT 256 + +/* A pointer to the base of a table that contains frame description + information for each routine. */ +static vms_func_ref func_table; + +/* Local pointer to the name of the main input file. Initialized in + avmdbgout_init. */ +static const char *primary_filename; + +static char *module_producer; +static unsigned int module_language; + +/* A pointer to the base of a table that contains line information + for each source code line in .text in the compilation unit. */ +static dst_line_info_ref line_info_table; + +/* Number of elements currently allocated for line_info_table. */ +static unsigned int line_info_table_allocated; + +/* Number of elements in line_info_table currently in use. */ +static unsigned int line_info_table_in_use; + +/* Size (in elements) of increments by which we may expand line_info_table. */ +#define LINE_INFO_TABLE_INCREMENT 1024 + +/* Forward declarations for functions defined in this file. */ +static char *full_name (const char *); +static unsigned int lookup_filename (const char *); +static void addr_const_to_string (char *, rtx); +static int write_debug_header (DST_HEADER *, const char *, int); +static int write_debug_addr (char *, const char *, int); +static int write_debug_data1 (unsigned int, const char *, int); +static int write_debug_data2 (unsigned int, const char *, int); +static int write_debug_data4 (unsigned long, const char *, int); +static int write_debug_data8 (unsigned long long, const char *, int); +static int write_debug_delta4 (char *, char *, const char *, int); +static int write_debug_string (char *, const char *, int); +static int write_modbeg (int); +static int write_modend (int); +static int write_rtnbeg (int, int); +static int write_rtnend (int, int); +static int write_pclines (int); +static int write_srccorr (int, dst_file_info_entry, int); +static int write_srccorrs (int); + +static void vmsdbgout_init (const char *); +static void vmsdbgout_finish (const char *); +static void vmsdbgout_define (unsigned int, const char *); +static void vmsdbgout_undef (unsigned int, const char *); +static void vmsdbgout_start_source_file (unsigned int, const char *); +static void vmsdbgout_end_source_file (unsigned int); +static void vmsdbgout_begin_block (unsigned int, unsigned int); +static void vmsdbgout_end_block (unsigned int, unsigned int); +static bool vmsdbgout_ignore_block (tree); +static void vmsdbgout_source_line (unsigned int, const char *); +static void vmsdbgout_begin_prologue (unsigned int, const char *); +static void vmsdbgout_end_prologue (unsigned int, const char *); +static void vmsdbgout_end_function (unsigned int); +static void vmsdbgout_end_epilogue (unsigned int, const char *); +static void vmsdbgout_begin_function (tree); +static void vmsdbgout_decl (tree); +static void vmsdbgout_global_decl (tree); +static void vmsdbgout_abstract_function (tree); + +/* The debug hooks structure. */ + +const struct gcc_debug_hooks vmsdbg_debug_hooks += {vmsdbgout_init, + vmsdbgout_finish, + vmsdbgout_define, + vmsdbgout_undef, + vmsdbgout_start_source_file, + vmsdbgout_end_source_file, + vmsdbgout_begin_block, + vmsdbgout_end_block, + vmsdbgout_ignore_block, + vmsdbgout_source_line, + vmsdbgout_begin_prologue, + vmsdbgout_end_prologue, + vmsdbgout_end_epilogue, + vmsdbgout_begin_function, + vmsdbgout_end_function, + vmsdbgout_decl, + vmsdbgout_global_decl, + debug_nothing_tree_int, /* type_decl */ + debug_nothing_tree_tree, /* imported_module_or_decl */ + debug_nothing_tree, /* deferred_inline_function */ + vmsdbgout_abstract_function, + debug_nothing_rtx, /* label */ + debug_nothing_int, /* handle_pch */ + debug_nothing_rtx, /* var_location */ + debug_nothing_void, /* switch_text_section */ + 0 /* start_end_main_source_file */ +}; + +/* Definitions of defaults for assembler-dependent names of various + pseudo-ops and section names. + Theses may be overridden in the tm.h file (if necessary) for a particular + assembler. */ +#ifdef UNALIGNED_SHORT_ASM_OP +#undef UNALIGNED_SHORT_ASM_OP +#endif +#define UNALIGNED_SHORT_ASM_OP ".word" + +#ifdef UNALIGNED_INT_ASM_OP +#undef UNALIGNED_INT_ASM_OP +#endif +#define UNALIGNED_INT_ASM_OP ".long" + +#ifdef UNALIGNED_LONG_ASM_OP +#undef UNALIGNED_LONG_ASM_OP +#endif +#define UNALIGNED_LONG_ASM_OP ".long" + +#ifdef UNALIGNED_DOUBLE_INT_ASM_OP +#undef UNALIGNED_DOUBLE_INT_ASM_OP +#endif +#define UNALIGNED_DOUBLE_INT_ASM_OP ".quad" + +#ifdef ASM_BYTE_OP +#undef ASM_BYTE_OP +#endif +#define ASM_BYTE_OP ".byte" + +#define NUMBYTES(I) ((I) < 256 ? 1 : (I) < 65536 ? 2 : 4) + +#define NUMBYTES0(I) ((I) < 128 ? 0 : (I) < 65536 ? 2 : 4) + +#ifndef UNALIGNED_PTR_ASM_OP +#define UNALIGNED_PTR_ASM_OP \ + (PTR_SIZE == 8 ? UNALIGNED_DOUBLE_INT_ASM_OP : UNALIGNED_INT_ASM_OP) +#endif + +#ifndef UNALIGNED_OFFSET_ASM_OP +#define UNALIGNED_OFFSET_ASM_OP(OFFSET) \ + (NUMBYTES(OFFSET) == 4 \ + ? UNALIGNED_LONG_ASM_OP \ + : (NUMBYTES(OFFSET) == 2 ? UNALIGNED_SHORT_ASM_OP : ASM_BYTE_OP)) +#endif + +/* Definitions of defaults for formats and names of various special + (artificial) labels which may be generated within this file (when the -g + options is used and VMS_DEBUGGING_INFO is in effect. If necessary, these + may be overridden from within the tm.h file, but typically, overriding these + defaults is unnecessary. */ + +static char text_end_label[MAX_ARTIFICIAL_LABEL_BYTES]; + +#ifndef TEXT_END_LABEL +#define TEXT_END_LABEL "Lvetext" +#endif +#ifndef FUNC_BEGIN_LABEL +#define FUNC_BEGIN_LABEL "LVFB" +#endif +#ifndef FUNC_PROLOG_LABEL +#define FUNC_PROLOG_LABEL "LVFP" +#endif +#ifndef FUNC_END_LABEL +#define FUNC_END_LABEL "LVFE" +#endif +#ifndef BLOCK_BEGIN_LABEL +#define BLOCK_BEGIN_LABEL "LVBB" +#endif +#ifndef BLOCK_END_LABEL +#define BLOCK_END_LABEL "LVBE" +#endif +#ifndef LINE_CODE_LABEL +#define LINE_CODE_LABEL "LVM" +#endif + +#ifndef ASM_OUTPUT_DEBUG_DELTA2 +#define ASM_OUTPUT_DEBUG_DELTA2(FILE,LABEL1,LABEL2) \ + do \ + { \ + fprintf ((FILE), "\t%s\t", UNALIGNED_SHORT_ASM_OP); \ + assemble_name (FILE, LABEL1); \ + fprintf (FILE, "-"); \ + assemble_name (FILE, LABEL2); \ + } \ + while (0) +#endif + +#ifndef ASM_OUTPUT_DEBUG_DELTA4 +#define ASM_OUTPUT_DEBUG_DELTA4(FILE,LABEL1,LABEL2) \ + do \ + { \ + fprintf ((FILE), "\t%s\t", UNALIGNED_INT_ASM_OP); \ + assemble_name (FILE, LABEL1); \ + fprintf (FILE, "-"); \ + assemble_name (FILE, LABEL2); \ + } \ + while (0) +#endif + +#ifndef ASM_OUTPUT_DEBUG_ADDR_DELTA +#define ASM_OUTPUT_DEBUG_ADDR_DELTA(FILE,LABEL1,LABEL2) \ + do \ + { \ + fprintf ((FILE), "\t%s\t", UNALIGNED_PTR_ASM_OP); \ + assemble_name (FILE, LABEL1); \ + fprintf (FILE, "-"); \ + assemble_name (FILE, LABEL2); \ + } \ + while (0) +#endif + +#ifndef ASM_OUTPUT_DEBUG_ADDR +#define ASM_OUTPUT_DEBUG_ADDR(FILE,LABEL) \ + do \ + { \ + fprintf ((FILE), "\t%s\t", UNALIGNED_PTR_ASM_OP); \ + assemble_name (FILE, LABEL); \ + } \ + while (0) +#endif + +#ifndef ASM_OUTPUT_DEBUG_ADDR_CONST +#define ASM_OUTPUT_DEBUG_ADDR_CONST(FILE,ADDR) \ + fprintf ((FILE), "\t%s\t%s", UNALIGNED_PTR_ASM_OP, (ADDR)) +#endif + +#ifndef ASM_OUTPUT_DEBUG_DATA1 +#define ASM_OUTPUT_DEBUG_DATA1(FILE,VALUE) \ + fprintf ((FILE), "\t%s\t0x%x", ASM_BYTE_OP, (unsigned char) VALUE) +#endif + +#ifndef ASM_OUTPUT_DEBUG_DATA2 +#define ASM_OUTPUT_DEBUG_DATA2(FILE,VALUE) \ + fprintf ((FILE), "\t%s\t0x%x", UNALIGNED_SHORT_ASM_OP, \ + (unsigned short) VALUE) +#endif + +#ifndef ASM_OUTPUT_DEBUG_DATA4 +#define ASM_OUTPUT_DEBUG_DATA4(FILE,VALUE) \ + fprintf ((FILE), "\t%s\t0x%lx", UNALIGNED_INT_ASM_OP, (unsigned long) VALUE) +#endif + +#ifndef ASM_OUTPUT_DEBUG_DATA +#define ASM_OUTPUT_DEBUG_DATA(FILE,VALUE) \ + fprintf ((FILE), "\t%s\t0x%lx", UNALIGNED_OFFSET_ASM_OP(VALUE), VALUE) +#endif + +#ifndef ASM_OUTPUT_DEBUG_ADDR_DATA +#define ASM_OUTPUT_DEBUG_ADDR_DATA(FILE,VALUE) \ + fprintf ((FILE), "\t%s\t0x%lx", UNALIGNED_PTR_ASM_OP, \ + (unsigned long) VALUE) +#endif + +#ifndef ASM_OUTPUT_DEBUG_DATA8 +#define ASM_OUTPUT_DEBUG_DATA8(FILE,VALUE) \ + fprintf ((FILE), "\t%s\t0x%llx", UNALIGNED_DOUBLE_INT_ASM_OP, \ + (unsigned long long) VALUE) +#endif + +/* This is similar to the default ASM_OUTPUT_ASCII, except that no trailing + newline is produced. When flag_verbose_asm is asserted, we add commentary + at the end of the line, so we must avoid output of a newline here. */ +#ifndef ASM_OUTPUT_DEBUG_STRING +#define ASM_OUTPUT_DEBUG_STRING(FILE,P) \ + do \ + { \ + register int slen = strlen(P); \ + register char *p = (P); \ + register int i; \ + fprintf (FILE, "\t.ascii \""); \ + for (i = 0; i < slen; i++) \ + { \ + register int c = p[i]; \ + if (c == '\"' || c == '\\') \ + putc ('\\', FILE); \ + if (c >= ' ' && c < 0177) \ + putc (c, FILE); \ + else \ + fprintf (FILE, "\\%o", c); \ + } \ + fprintf (FILE, "\""); \ + } \ + while (0) +#endif + +/* Convert a reference to the assembler name of a C-level name. This + macro has the same effect as ASM_OUTPUT_LABELREF, but copies to + a string rather than writing to a file. */ +#ifndef ASM_NAME_TO_STRING +#define ASM_NAME_TO_STRING(STR, NAME) \ + do \ + { \ + if ((NAME)[0] == '*') \ + strcpy (STR, NAME+1); \ + else \ + strcpy (STR, NAME); \ + } \ + while (0) +#endif + + +/* General utility functions. */ + +/* Convert an integer constant expression into assembler syntax. Addition and + subtraction are the only arithmetic that may appear in these expressions. + This is an adaptation of output_addr_const in final.c. Here, the target + of the conversion is a string buffer. We can't use output_addr_const + directly, because it writes to a file. */ + +static void +addr_const_to_string (char *str, rtx x) +{ + char buf1[256]; + char buf2[256]; + + restart: + str[0] = '\0'; + switch (GET_CODE (x)) + { + case PC: + gcc_assert (flag_pic); + strcat (str, ","); + break; + + case SYMBOL_REF: + ASM_NAME_TO_STRING (buf1, XSTR (x, 0)); + strcat (str, buf1); + break; + + case LABEL_REF: + ASM_GENERATE_INTERNAL_LABEL (buf1, "L", CODE_LABEL_NUMBER (XEXP (x, 0))); + ASM_NAME_TO_STRING (buf2, buf1); + strcat (str, buf2); + break; + + case CODE_LABEL: + ASM_GENERATE_INTERNAL_LABEL (buf1, "L", CODE_LABEL_NUMBER (x)); + ASM_NAME_TO_STRING (buf2, buf1); + strcat (str, buf2); + break; + + case CONST_INT: + sprintf (buf1, HOST_WIDE_INT_PRINT_DEC, INTVAL (x)); + strcat (str, buf1); + break; + + case CONST: + /* This used to output parentheses around the expression, but that does + not work on the 386 (either ATT or BSD assembler). */ + addr_const_to_string (buf1, XEXP (x, 0)); + strcat (str, buf1); + break; + + case CONST_DOUBLE: + if (GET_MODE (x) == VOIDmode) + { + /* We can use %d if the number is one word and positive. */ + if (CONST_DOUBLE_HIGH (x)) + sprintf (buf1, HOST_WIDE_INT_PRINT_DOUBLE_HEX, + CONST_DOUBLE_HIGH (x), CONST_DOUBLE_LOW (x)); + else if (CONST_DOUBLE_LOW (x) < 0) + sprintf (buf1, HOST_WIDE_INT_PRINT_HEX, CONST_DOUBLE_LOW (x)); + else + sprintf (buf1, HOST_WIDE_INT_PRINT_DEC, + CONST_DOUBLE_LOW (x)); + strcat (str, buf1); + } + else + /* We can't handle floating point constants; PRINT_OPERAND must + handle them. */ + output_operand_lossage ("floating constant misused"); + break; + + case PLUS: + /* Some assemblers need integer constants to appear last (eg masm). */ + if (GET_CODE (XEXP (x, 0)) == CONST_INT) + { + addr_const_to_string (buf1, XEXP (x, 1)); + strcat (str, buf1); + if (INTVAL (XEXP (x, 0)) >= 0) + strcat (str, "+"); + addr_const_to_string (buf1, XEXP (x, 0)); + strcat (str, buf1); + } + else + { + addr_const_to_string (buf1, XEXP (x, 0)); + strcat (str, buf1); + if (INTVAL (XEXP (x, 1)) >= 0) + strcat (str, "+"); + addr_const_to_string (buf1, XEXP (x, 1)); + strcat (str, buf1); + } + break; + + case MINUS: + /* Avoid outputting things like x-x or x+5-x, since some assemblers + can't handle that. */ + x = simplify_subtraction (x); + if (GET_CODE (x) != MINUS) + goto restart; + + addr_const_to_string (buf1, XEXP (x, 0)); + strcat (str, buf1); + strcat (str, "-"); + if (GET_CODE (XEXP (x, 1)) == CONST_INT + && INTVAL (XEXP (x, 1)) < 0) + { + strcat (str, "("); + addr_const_to_string (buf1, XEXP (x, 1)); + strcat (str, buf1); + strcat (str, ")"); + } + else + { + addr_const_to_string (buf1, XEXP (x, 1)); + strcat (str, buf1); + } + break; + + case ZERO_EXTEND: + case SIGN_EXTEND: + addr_const_to_string (buf1, XEXP (x, 0)); + strcat (str, buf1); + break; + + default: + output_operand_lossage ("invalid expression as operand"); + } +} + +/* Output the debug header HEADER. Also output COMMENT if flag_verbose_asm is + set. Return the header size. Just return the size if DOSIZEONLY is + nonzero. */ + +static int +write_debug_header (DST_HEADER *header, const char *comment, int dosizeonly) +{ + if (!dosizeonly) + { + ASM_OUTPUT_DEBUG_DATA2 (asm_out_file, + header->dst__header_length.dst_w_length); + + if (flag_verbose_asm) + fprintf (asm_out_file, "\t%s record length", ASM_COMMENT_START); + fputc ('\n', asm_out_file); + + ASM_OUTPUT_DEBUG_DATA2 (asm_out_file, + header->dst__header_type.dst_w_type); + + if (flag_verbose_asm) + fprintf (asm_out_file, "\t%s record type (%s)", ASM_COMMENT_START, + comment); + + fputc ('\n', asm_out_file); + } + + return 4; +} + +/* Output the address of SYMBOL. Also output COMMENT if flag_verbose_asm is + set. Return the address size. Just return the size if DOSIZEONLY is + nonzero. */ + +static int +write_debug_addr (char *symbol, const char *comment, int dosizeonly) +{ + if (!dosizeonly) + { + ASM_OUTPUT_DEBUG_ADDR (asm_out_file, symbol); + if (flag_verbose_asm) + fprintf (asm_out_file, "\t%s %s", ASM_COMMENT_START, comment); + fputc ('\n', asm_out_file); + } + + return PTR_SIZE; +} + +/* Output the single byte DATA1. Also output COMMENT if flag_verbose_asm is + set. Return the data size. Just return the size if DOSIZEONLY is + nonzero. */ + +static int +write_debug_data1 (unsigned int data1, const char *comment, int dosizeonly) +{ + if (!dosizeonly) + { + ASM_OUTPUT_DEBUG_DATA1 (asm_out_file, data1); + if (flag_verbose_asm) + fprintf (asm_out_file, "\t%s %s", ASM_COMMENT_START, comment); + fputc ('\n', asm_out_file); + } + + return 1; +} + +/* Output the single word DATA2. Also output COMMENT if flag_verbose_asm is + set. Return the data size. Just return the size if DOSIZEONLY is + nonzero. */ + +static int +write_debug_data2 (unsigned int data2, const char *comment, int dosizeonly) +{ + if (!dosizeonly) + { + ASM_OUTPUT_DEBUG_DATA2 (asm_out_file, data2); + if (flag_verbose_asm) + fprintf (asm_out_file, "\t%s %s", ASM_COMMENT_START, comment); + fputc ('\n', asm_out_file); + } + + return 2; +} + +/* Output double word DATA4. Also output COMMENT if flag_verbose_asm is set. + Return the data size. Just return the size if DOSIZEONLY is nonzero. */ + +static int +write_debug_data4 (unsigned long data4, const char *comment, int dosizeonly) +{ + if (!dosizeonly) + { + ASM_OUTPUT_DEBUG_DATA4 (asm_out_file, data4); + if (flag_verbose_asm) + fprintf (asm_out_file, "\t%s %s", ASM_COMMENT_START, comment); + fputc ('\n', asm_out_file); + } + + return 4; +} + +/* Output quad word DATA8. Also output COMMENT if flag_verbose_asm is set. + Return the data size. Just return the size if DOSIZEONLY is nonzero. */ + +static int +write_debug_data8 (unsigned long long data8, const char *comment, + int dosizeonly) +{ + if (!dosizeonly) + { + ASM_OUTPUT_DEBUG_DATA8 (asm_out_file, data8); + if (flag_verbose_asm) + fprintf (asm_out_file, "\t%s %s", ASM_COMMENT_START, comment); + fputc ('\n', asm_out_file); + } + + return 8; +} + +/* Output the difference between LABEL1 and LABEL2. Also output COMMENT if + flag_verbose_asm is set. Return the data size. Just return the size if + DOSIZEONLY is nonzero. */ + +static int +write_debug_delta4 (char *label1, char *label2, const char *comment, + int dosizeonly) +{ + if (!dosizeonly) + { + ASM_OUTPUT_DEBUG_DELTA4 (asm_out_file, label1, label2); + if (flag_verbose_asm) + fprintf (asm_out_file, "\t%s %s", ASM_COMMENT_START, comment); + fputc ('\n', asm_out_file); + } + + return 4; +} + +/* Output a character string STRING. Also write COMMENT if flag_verbose_asm is + set. Return the string length. Just return the length if DOSIZEONLY is + nonzero. */ + +static int +write_debug_string (char *string, const char *comment, int dosizeonly) +{ + if (!dosizeonly) + { + ASM_OUTPUT_DEBUG_STRING (asm_out_file, string); + if (flag_verbose_asm) + fprintf (asm_out_file, "\t%s %s", ASM_COMMENT_START, comment); + fputc ('\n', asm_out_file); + } + + return strlen (string); +} + +/* Output a module begin header and return the header size. Just return the + size if DOSIZEONLY is nonzero. */ + +static int +write_modbeg (int dosizeonly) +{ + DST_MODULE_BEGIN modbeg; + DST_MB_TRLR mb_trlr; + int i; + char *module_name, *m; + int modnamelen; + int prodnamelen; + int totsize = 0; + + /* Assumes primary filename has Unix syntax file spec. */ + module_name = xstrdup (basename ((char *) primary_filename)); + + m = strrchr (module_name, '.'); + if (m) + *m = 0; + + modnamelen = strlen (module_name); + for (i = 0; i < modnamelen; i++) + module_name[i] = TOUPPER (module_name[i]); + + prodnamelen = strlen (module_producer); + + modbeg.dst_a_modbeg_header.dst__header_length.dst_w_length + = DST_K_MODBEG_SIZE + modnamelen + DST_K_MB_TRLR_SIZE + prodnamelen - 1; + modbeg.dst_a_modbeg_header.dst__header_type.dst_w_type = DST_K_MODBEG; + modbeg.dst_b_modbeg_flags.dst_v_modbeg_hide = 0; + modbeg.dst_b_modbeg_flags.dst_v_modbeg_version = 1; + modbeg.dst_b_modbeg_flags.dst_v_modbeg_unused = 0; + modbeg.dst_b_modbeg_unused = 0; + modbeg.dst_l_modbeg_language = module_language; + modbeg.dst_w_version_major = DST_K_VERSION_MAJOR; + modbeg.dst_w_version_minor = DST_K_VERSION_MINOR; + modbeg.dst_b_modbeg_name = strlen (module_name); + + mb_trlr.dst_b_compiler = strlen (module_producer); + + totsize += write_debug_header (&modbeg.dst_a_modbeg_header, + "modbeg", dosizeonly); + totsize += write_debug_data1 (*((char *) &modbeg.dst_b_modbeg_flags), + "flags", dosizeonly); + totsize += write_debug_data1 (modbeg.dst_b_modbeg_unused, + "unused", dosizeonly); + totsize += write_debug_data4 (modbeg.dst_l_modbeg_language, + "language", dosizeonly); + totsize += write_debug_data2 (modbeg.dst_w_version_major, + "DST major version", dosizeonly); + totsize += write_debug_data2 (modbeg.dst_w_version_minor, + "DST minor version", dosizeonly); + totsize += write_debug_data1 (modbeg.dst_b_modbeg_name, + "length of module name", dosizeonly); + totsize += write_debug_string (module_name, "module name", dosizeonly); + totsize += write_debug_data1 (mb_trlr.dst_b_compiler, + "length of compiler name", dosizeonly); + totsize += write_debug_string (module_producer, "compiler name", dosizeonly); + + return totsize; +} + +/* Output a module end trailer and return the trailer size. Just return + the size if DOSIZEONLY is nonzero. */ + +static int +write_modend (int dosizeonly) +{ + DST_MODULE_END modend; + int totsize = 0; + + modend.dst_a_modend_header.dst__header_length.dst_w_length + = DST_K_MODEND_SIZE - 1; + modend.dst_a_modend_header.dst__header_type.dst_w_type = DST_K_MODEND; + + totsize += write_debug_header (&modend.dst_a_modend_header, "modend", + dosizeonly); + + return totsize; +} + +/* Output a routine begin header routine RTNNUM and return the header size. + Just return the size if DOSIZEONLY is nonzero. */ + +static int +write_rtnbeg (int rtnnum, int dosizeonly) +{ + char *rtnname; + int rtnnamelen; + char *rtnentryname; + int totsize = 0; + char label[MAX_ARTIFICIAL_LABEL_BYTES]; + DST_ROUTINE_BEGIN rtnbeg; + DST_PROLOG prolog; + vms_func_ref fde = &func_table[rtnnum]; + + rtnname = (char *)fde->vms_func_name; + rtnnamelen = strlen (rtnname); + rtnentryname = concat (rtnname, "..en", NULL); + + if (!strcmp (rtnname, "main")) + { + DST_HEADER header; + const char *go = "TRANSFER$BREAK$GO"; + + /* This command isn't documented in DSTRECORDS, so it's made to + look like what DEC C does */ + + /* header size - 1st byte + flag byte + STO_LW size + + string count byte + string length */ + header.dst__header_length.dst_w_length + = DST_K_DST_HEADER_SIZE - 1 + 1 + 4 + 1 + strlen (go); + header.dst__header_type.dst_w_type = 0x17; + + totsize += write_debug_header (&header, "transfer", dosizeonly); + + /* I think this is a flag byte, but I don't know what this flag means */ + totsize += write_debug_data1 (0x1, "flags ???", dosizeonly); + + /* Routine Begin PD Address */ + totsize += write_debug_addr (rtnname, "main procedure descriptor", + dosizeonly); + totsize += write_debug_data1 (strlen (go), "length of main_name", + dosizeonly); + totsize += write_debug_string ((char *) go, "main name", dosizeonly); + } + + /* The header length never includes the length byte. */ + rtnbeg.dst_a_rtnbeg_header.dst__header_length.dst_w_length + = DST_K_RTNBEG_SIZE + rtnnamelen - 1; + rtnbeg.dst_a_rtnbeg_header.dst__header_type.dst_w_type = DST_K_RTNBEG; + rtnbeg.dst_b_rtnbeg_flags.dst_v_rtnbeg_unused = 0; + rtnbeg.dst_b_rtnbeg_flags.dst_v_rtnbeg_unalloc = 0; + rtnbeg.dst_b_rtnbeg_flags.dst_v_rtnbeg_prototype = 0; + rtnbeg.dst_b_rtnbeg_flags.dst_v_rtnbeg_inlined = 0; + rtnbeg.dst_b_rtnbeg_flags.dst_v_rtnbeg_no_call = 1; + rtnbeg.dst_b_rtnbeg_name = rtnnamelen; + + totsize += write_debug_header (&rtnbeg.dst_a_rtnbeg_header, "rtnbeg", + dosizeonly); + totsize += write_debug_data1 (*((char *) &rtnbeg.dst_b_rtnbeg_flags), + "flags", dosizeonly); + + /* Routine Begin Address */ + totsize += write_debug_addr (rtnentryname, "routine entry name", dosizeonly); + + /* Routine Begin PD Address */ + totsize += write_debug_addr (rtnname, "routine procedure descriptor", + dosizeonly); + + /* Routine Begin Name */ + totsize += write_debug_data1 (rtnbeg.dst_b_rtnbeg_name, + "length of routine name", dosizeonly); + + totsize += write_debug_string (rtnname, "routine name", dosizeonly); + + free (rtnentryname); + + if (debug_info_level > DINFO_LEVEL_TERSE) + { + prolog.dst_a_prolog_header.dst__header_length.dst_w_length + = DST_K_PROLOG_SIZE - 1; + prolog.dst_a_prolog_header.dst__header_type.dst_w_type = DST_K_PROLOG; + + totsize += write_debug_header (&prolog.dst_a_prolog_header, "prolog", + dosizeonly); + + ASM_GENERATE_INTERNAL_LABEL (label, FUNC_PROLOG_LABEL, fde->funcdef_number); + totsize += write_debug_addr (label, "prolog breakpoint addr", + dosizeonly); + } + + return totsize; +} + +/* Output a routine end trailer for routine RTNNUM and return the header size. + Just return the size if DOSIZEONLY is nonzero. */ + +static int +write_rtnend (int rtnnum, int dosizeonly) +{ + DST_ROUTINE_END rtnend; + char label1[MAX_ARTIFICIAL_LABEL_BYTES]; + char label2[MAX_ARTIFICIAL_LABEL_BYTES]; + int totsize; + vms_func_ref fde = &func_table[rtnnum]; + int corrected_rtnnum = fde->funcdef_number; + + totsize = 0; + + rtnend.dst_a_rtnend_header.dst__header_length.dst_w_length + = DST_K_RTNEND_SIZE - 1; + rtnend.dst_a_rtnend_header.dst__header_type.dst_w_type = DST_K_RTNEND; + rtnend.dst_b_rtnend_unused = 0; + rtnend.dst_l_rtnend_size = 0; /* Calculated below. */ + + totsize += write_debug_header (&rtnend.dst_a_rtnend_header, "rtnend", + dosizeonly); + totsize += write_debug_data1 (rtnend.dst_b_rtnend_unused, "unused", + dosizeonly); + + ASM_GENERATE_INTERNAL_LABEL (label1, FUNC_BEGIN_LABEL, corrected_rtnnum); + ASM_GENERATE_INTERNAL_LABEL (label2, FUNC_END_LABEL, corrected_rtnnum); + totsize += write_debug_delta4 (label2, label1, "routine size", dosizeonly); + + return totsize; +} + +#define K_DELTA_PC(I) \ + ((I) < 128 ? -(I) : (I) < 65536 ? DST_K_DELTA_PC_W : DST_K_DELTA_PC_L) + +#define K_SET_LINUM(I) \ + ((I) < 256 ? DST_K_SET_LINUM_B \ + : (I) < 65536 ? DST_K_SET_LINUM : DST_K_SET_LINUM_L) + +#define K_INCR_LINUM(I) \ + ((I) < 256 ? DST_K_INCR_LINUM \ + : (I) < 65536 ? DST_K_INCR_LINUM_W : DST_K_INCR_LINUM_L) + +/* Output the PC to line number correlations and return the size. Just return + the size if DOSIZEONLY is nonzero */ + +static int +write_pclines (int dosizeonly) +{ + unsigned i; + int fn; + int ln, lastln; + int linestart = 0; + int max_line; + DST_LINE_NUM_HEADER line_num; + DST_PCLINE_COMMANDS pcline; + char label[MAX_ARTIFICIAL_LABEL_BYTES]; + char lastlabel[MAX_ARTIFICIAL_LABEL_BYTES]; + int totsize = 0; + char buff[256]; + + max_line = file_info_table[1].max_line; + file_info_table[1].listing_line_start = linestart; + linestart = linestart + ((max_line / 100000) + 1) * 100000; + + for (i = 2; i < file_info_table_in_use; i++) + { + max_line = file_info_table[i].max_line; + file_info_table[i].listing_line_start = linestart; + linestart = linestart + ((max_line / 10000) + 1) * 10000; + } + + /* Set starting address to beginning of text section. */ + line_num.dst_a_line_num_header.dst__header_length.dst_w_length = 8; + line_num.dst_a_line_num_header.dst__header_type.dst_w_type = DST_K_LINE_NUM; + pcline.dst_b_pcline_command = DST_K_SET_ABS_PC; + + totsize += write_debug_header (&line_num.dst_a_line_num_header, + "line_num", dosizeonly); + totsize += write_debug_data1 (pcline.dst_b_pcline_command, + "line_num (SET ABS PC)", dosizeonly); + + if (dosizeonly) + totsize += 4; + else + { + ASM_OUTPUT_DEBUG_ADDR (asm_out_file, TEXT_SECTION_ASM_OP); + if (flag_verbose_asm) + fprintf (asm_out_file, "\t%s line_num", ASM_COMMENT_START); + fputc ('\n', asm_out_file); + } + + fn = line_info_table[1].dst_file_num; + ln = (file_info_table[fn].listing_line_start + + line_info_table[1].dst_line_num); + line_num.dst_a_line_num_header.dst__header_length.dst_w_length = 4 + 4; + pcline.dst_b_pcline_command = DST_K_SET_LINUM_L; + + totsize += write_debug_header (&line_num.dst_a_line_num_header, + "line_num", dosizeonly); + totsize += write_debug_data1 (pcline.dst_b_pcline_command, + "line_num (SET LINUM LONG)", dosizeonly); + + sprintf (buff, "line_num (%d)", ln ? ln - 1 : 0); + totsize += write_debug_data4 (ln ? ln - 1 : 0, buff, dosizeonly); + + lastln = ln; + strcpy (lastlabel, TEXT_SECTION_ASM_OP); + for (i = 1; i < line_info_table_in_use; i++) + { + int extrabytes; + + fn = line_info_table[i].dst_file_num; + ln = (file_info_table[fn].listing_line_start + + line_info_table[i].dst_line_num); + + if (ln - lastln > 1) + extrabytes = 5; /* NUMBYTES (ln - lastln - 1) + 1; */ + else if (ln <= lastln) + extrabytes = 5; /* NUMBYTES (ln - 1) + 1; */ + else + extrabytes = 0; + + line_num.dst_a_line_num_header.dst__header_length.dst_w_length + = 8 + extrabytes; + + totsize += write_debug_header + (&line_num.dst_a_line_num_header, "line_num", dosizeonly); + + if (ln - lastln > 1) + { + int lndif = ln - lastln - 1; + + /* K_INCR_LINUM (lndif); */ + pcline.dst_b_pcline_command = DST_K_INCR_LINUM_L; + + totsize += write_debug_data1 (pcline.dst_b_pcline_command, + "line_num (INCR LINUM LONG)", + dosizeonly); + + sprintf (buff, "line_num (%d)", lndif); + totsize += write_debug_data4 (lndif, buff, dosizeonly); + } + else if (ln <= lastln) + { + /* K_SET_LINUM (ln-1); */ + pcline.dst_b_pcline_command = DST_K_SET_LINUM_L; + + totsize += write_debug_data1 (pcline.dst_b_pcline_command, + "line_num (SET LINUM LONG)", + dosizeonly); + + sprintf (buff, "line_num (%d)", ln - 1); + totsize += write_debug_data4 (ln - 1, buff, dosizeonly); + } + + pcline.dst_b_pcline_command = DST_K_DELTA_PC_L; + + totsize += write_debug_data1 (pcline.dst_b_pcline_command, + "line_num (DELTA PC LONG)", dosizeonly); + + ASM_GENERATE_INTERNAL_LABEL (label, LINE_CODE_LABEL, i); + totsize += write_debug_delta4 (label, lastlabel, "increment line_num", + dosizeonly); + + lastln = ln; + strcpy (lastlabel, label); + } + + return totsize; +} + +/* Output a source correlation for file FILEID using information saved in + FILE_INFO_ENTRY and return the size. Just return the size if DOSIZEONLY is + nonzero. */ + +static int +write_srccorr (int fileid, dst_file_info_entry file_info_entry, + int dosizeonly) +{ + int src_command_size; + int linesleft = file_info_entry.max_line; + int linestart = file_info_entry.listing_line_start; + int flen = file_info_entry.flen; + int linestodo = 0; + DST_SOURCE_CORR src_header; + DST_SRC_COMMAND src_command; + DST_SRC_COMMAND src_command_sf; + DST_SRC_COMMAND src_command_sl; + DST_SRC_COMMAND src_command_sr; + DST_SRC_COMMAND src_command_dl; + DST_SRC_CMDTRLR src_cmdtrlr; + char buff[256]; + int totsize = 0; + + if (fileid == 1) + { + src_header.dst_a_source_corr_header.dst__header_length.dst_w_length + = DST_K_SOURCE_CORR_HEADER_SIZE + 1 - 1; + src_header.dst_a_source_corr_header.dst__header_type.dst_w_type + = DST_K_SOURCE; + src_command.dst_b_src_command = DST_K_SRC_FORMFEED; + + totsize += write_debug_header (&src_header.dst_a_source_corr_header, + "source corr", dosizeonly); + + totsize += write_debug_data1 (src_command.dst_b_src_command, + "source_corr (SRC FORMFEED)", + dosizeonly); + } + + src_command_size + = DST_K_SRC_COMMAND_SIZE + flen + DST_K_SRC_CMDTRLR_SIZE; + src_command.dst_b_src_command = DST_K_SRC_DECLFILE; + src_command.dst_a_src_cmd_fields.dst_a_src_decl_src.dst_b_src_df_length + = src_command_size - 2; + src_command.dst_a_src_cmd_fields.dst_a_src_decl_src.dst_b_src_df_flags = 0; + src_command.dst_a_src_cmd_fields.dst_a_src_decl_src.dst_w_src_df_fileid + = fileid; + src_command.dst_a_src_cmd_fields.dst_a_src_decl_src.dst_q_src_df_rms_cdt + = file_info_entry.cdt; + src_command.dst_a_src_cmd_fields.dst_a_src_decl_src.dst_l_src_df_rms_ebk + = file_info_entry.ebk; + src_command.dst_a_src_cmd_fields.dst_a_src_decl_src.dst_w_src_df_rms_ffb + = file_info_entry.ffb; + src_command.dst_a_src_cmd_fields.dst_a_src_decl_src.dst_b_src_df_rms_rfo + = file_info_entry.rfo; + src_command.dst_a_src_cmd_fields.dst_a_src_decl_src.dst_b_src_df_filename + = file_info_entry.flen; + + src_header.dst_a_source_corr_header.dst__header_length.dst_w_length + = DST_K_SOURCE_CORR_HEADER_SIZE + src_command_size - 1; + src_header.dst_a_source_corr_header.dst__header_type.dst_w_type + = DST_K_SOURCE; + + src_cmdtrlr.dst_b_src_df_libmodname = 0; + + totsize += write_debug_header (&src_header.dst_a_source_corr_header, + "source corr", dosizeonly); + totsize += write_debug_data1 (src_command.dst_b_src_command, + "source_corr (DECL SRC FILE)", dosizeonly); + totsize += write_debug_data1 + (src_command.dst_a_src_cmd_fields.dst_a_src_decl_src.dst_b_src_df_length, + "source_corr (length)", dosizeonly); + + totsize += write_debug_data1 + (src_command.dst_a_src_cmd_fields.dst_a_src_decl_src.dst_b_src_df_flags, + "source_corr (flags)", dosizeonly); + + totsize += write_debug_data2 + (src_command.dst_a_src_cmd_fields.dst_a_src_decl_src.dst_w_src_df_fileid, + "source_corr (fileid)", dosizeonly); + + totsize += write_debug_data8 + (src_command.dst_a_src_cmd_fields.dst_a_src_decl_src.dst_q_src_df_rms_cdt, + "source_corr (creation date)", dosizeonly); + + totsize += write_debug_data4 + (src_command.dst_a_src_cmd_fields.dst_a_src_decl_src.dst_l_src_df_rms_ebk, + "source_corr (EOF block number)", dosizeonly); + + totsize += write_debug_data2 + (src_command.dst_a_src_cmd_fields.dst_a_src_decl_src.dst_w_src_df_rms_ffb, + "source_corr (first free byte)", dosizeonly); + + totsize += write_debug_data1 + (src_command.dst_a_src_cmd_fields.dst_a_src_decl_src.dst_b_src_df_rms_rfo, + "source_corr (record and file organization)", dosizeonly); + + totsize += write_debug_data1 + (src_command.dst_a_src_cmd_fields.dst_a_src_decl_src.dst_b_src_df_filename, + "source_corr (filename length)", dosizeonly); + + totsize += write_debug_string (file_info_entry.file_name, + "source file name", dosizeonly); + totsize += write_debug_data1 (src_cmdtrlr.dst_b_src_df_libmodname, + "source_corr (libmodname)", dosizeonly); + + src_command_sf.dst_b_src_command = DST_K_SRC_SETFILE; + src_command_sf.dst_a_src_cmd_fields.dst_w_src_unsword = fileid; + + src_command_sr.dst_b_src_command = DST_K_SRC_SETREC_W; + src_command_sr.dst_a_src_cmd_fields.dst_w_src_unsword = 1; + + src_command_sl.dst_b_src_command = DST_K_SRC_SETLNUM_L; + src_command_sl.dst_a_src_cmd_fields.dst_l_src_unslong = linestart + 1; + + src_command_dl.dst_b_src_command = DST_K_SRC_DEFLINES_W; + + if (linesleft > 65534) + linesleft = linesleft - 65534, linestodo = 65534; + else + linestodo = linesleft, linesleft = 0; + + src_command_dl.dst_a_src_cmd_fields.dst_w_src_unsword = linestodo; + + src_header.dst_a_source_corr_header.dst__header_length.dst_w_length + = DST_K_SOURCE_CORR_HEADER_SIZE + 3 + 3 + 5 + 3 - 1; + src_header.dst_a_source_corr_header.dst__header_type.dst_w_type + = DST_K_SOURCE; + + if (src_command_dl.dst_a_src_cmd_fields.dst_w_src_unsword) + { + totsize += write_debug_header (&src_header.dst_a_source_corr_header, + "source corr", dosizeonly); + + totsize += write_debug_data1 (src_command_sf.dst_b_src_command, + "source_corr (src setfile)", dosizeonly); + + totsize += write_debug_data2 + (src_command_sf.dst_a_src_cmd_fields.dst_w_src_unsword, + "source_corr (fileid)", dosizeonly); + + totsize += write_debug_data1 (src_command_sr.dst_b_src_command, + "source_corr (setrec)", dosizeonly); + + totsize += write_debug_data2 + (src_command_sr.dst_a_src_cmd_fields.dst_w_src_unsword, + "source_corr (recnum)", dosizeonly); + + totsize += write_debug_data1 (src_command_sl.dst_b_src_command, + "source_corr (setlnum)", dosizeonly); + + totsize += write_debug_data4 + (src_command_sl.dst_a_src_cmd_fields.dst_l_src_unslong, + "source_corr (linenum)", dosizeonly); + + totsize += write_debug_data1 (src_command_dl.dst_b_src_command, + "source_corr (deflines)", dosizeonly); + + sprintf (buff, "source_corr (%d)", + src_command_dl.dst_a_src_cmd_fields.dst_w_src_unsword); + totsize += write_debug_data2 + (src_command_dl.dst_a_src_cmd_fields.dst_w_src_unsword, + buff, dosizeonly); + + while (linesleft > 0) + { + src_header.dst_a_source_corr_header.dst__header_length.dst_w_length + = DST_K_SOURCE_CORR_HEADER_SIZE + 3 - 1; + src_header.dst_a_source_corr_header.dst__header_type.dst_w_type + = DST_K_SOURCE; + src_command_dl.dst_b_src_command = DST_K_SRC_DEFLINES_W; + + if (linesleft > 65534) + linesleft = linesleft - 65534, linestodo = 65534; + else + linestodo = linesleft, linesleft = 0; + + src_command_dl.dst_a_src_cmd_fields.dst_w_src_unsword = linestodo; + + totsize += write_debug_header (&src_header.dst_a_source_corr_header, + "source corr", dosizeonly); + totsize += write_debug_data1 (src_command_dl.dst_b_src_command, + "source_corr (deflines)", dosizeonly); + sprintf (buff, "source_corr (%d)", + src_command_dl.dst_a_src_cmd_fields.dst_w_src_unsword); + totsize += write_debug_data2 + (src_command_dl.dst_a_src_cmd_fields.dst_w_src_unsword, + buff, dosizeonly); + } + } + + return totsize; +} + +/* Output all the source correlation entries and return the size. Just return + the size if DOSIZEONLY is nonzero. */ + +static int +write_srccorrs (int dosizeonly) +{ + unsigned int i; + int totsize = 0; + + for (i = 1; i < file_info_table_in_use; i++) + totsize += write_srccorr (i, file_info_table[i], dosizeonly); + + return totsize; +} + +/* Output a marker (i.e. a label) for the beginning of a function, before + the prologue. */ + +static void +vmsdbgout_begin_prologue (unsigned int line, const char *file) +{ + char label[MAX_ARTIFICIAL_LABEL_BYTES]; + + if (write_symbols == VMS_AND_DWARF2_DEBUG) + (*dwarf2_debug_hooks.begin_prologue) (line, file); + + if (debug_info_level > DINFO_LEVEL_NONE) + { + ASM_GENERATE_INTERNAL_LABEL (label, FUNC_BEGIN_LABEL, + current_function_funcdef_no); + ASM_OUTPUT_LABEL (asm_out_file, label); + } +} + +/* Output a marker (i.e. a label) for the beginning of a function, after + the prologue. */ + +static void +vmsdbgout_end_prologue (unsigned int line, const char *file) +{ + char label[MAX_ARTIFICIAL_LABEL_BYTES]; + + if (write_symbols == VMS_AND_DWARF2_DEBUG) + (*dwarf2_debug_hooks.end_prologue) (line, file); + + if (debug_info_level > DINFO_LEVEL_TERSE) + { + ASM_GENERATE_INTERNAL_LABEL (label, FUNC_PROLOG_LABEL, + current_function_funcdef_no); + ASM_OUTPUT_LABEL (asm_out_file, label); + + /* VMS PCA expects every PC range to correlate to some line and file. */ + vmsdbgout_source_line (line, file); + } +} + +/* No output for VMS debug, but make obligatory call to Dwarf2 debug */ + +static void +vmsdbgout_end_function (unsigned int line) +{ + if (write_symbols == VMS_AND_DWARF2_DEBUG) + (*dwarf2_debug_hooks.end_function) (line); +} + +/* Output a marker (i.e. a label) for the absolute end of the generated code + for a function definition. This gets called *after* the epilogue code has + been generated. */ + +static void +vmsdbgout_end_epilogue (unsigned int line, const char *file) +{ + char label[MAX_ARTIFICIAL_LABEL_BYTES]; + + if (write_symbols == VMS_AND_DWARF2_DEBUG) + (*dwarf2_debug_hooks.end_epilogue) (line, file); + + if (debug_info_level > DINFO_LEVEL_NONE) + { + /* Output a label to mark the endpoint of the code generated for this + function. */ + ASM_GENERATE_INTERNAL_LABEL (label, FUNC_END_LABEL, + current_function_funcdef_no); + ASM_OUTPUT_LABEL (asm_out_file, label); + + /* VMS PCA expects every PC range to correlate to some line and file. */ + vmsdbgout_source_line (line, file); + } +} + +/* Output a marker (i.e. a label) for the beginning of the generated code for + a lexical block. */ + +static void +vmsdbgout_begin_block (register unsigned line, register unsigned blocknum) +{ + if (write_symbols == VMS_AND_DWARF2_DEBUG) + (*dwarf2_debug_hooks.begin_block) (line, blocknum); + + if (debug_info_level > DINFO_LEVEL_TERSE) + targetm.asm_out.internal_label (asm_out_file, BLOCK_BEGIN_LABEL, blocknum); +} + +/* Output a marker (i.e. a label) for the end of the generated code for a + lexical block. */ + +static void +vmsdbgout_end_block (register unsigned line, register unsigned blocknum) +{ + if (write_symbols == VMS_AND_DWARF2_DEBUG) + (*dwarf2_debug_hooks.end_block) (line, blocknum); + + if (debug_info_level > DINFO_LEVEL_TERSE) + targetm.asm_out.internal_label (asm_out_file, BLOCK_END_LABEL, blocknum); +} + +/* Not implemented in VMS Debug. */ + +static bool +vmsdbgout_ignore_block (tree block) +{ + bool retval = 0; + + if (write_symbols == VMS_AND_DWARF2_DEBUG) + retval = (*dwarf2_debug_hooks.ignore_block) (block); + + return retval; +} + +/* Add an entry for function DECL into the func_table. */ + +static void +vmsdbgout_begin_function (tree decl) +{ + const char *name = XSTR (XEXP (DECL_RTL (decl), 0), 0); + vms_func_ref fde; + + if (write_symbols == VMS_AND_DWARF2_DEBUG) + (*dwarf2_debug_hooks.begin_function) (decl); + + if (func_table_in_use == func_table_allocated) + { + func_table_allocated += FUNC_TABLE_INCREMENT; + func_table + = (vms_func_ref) xrealloc (func_table, + func_table_allocated * sizeof (vms_func_node)); + } + + /* Add the new entry to the end of the function name table. */ + fde = &func_table[func_table_in_use++]; + fde->vms_func_name = xstrdup (name); + fde->funcdef_number = current_function_funcdef_no; + +} + +static char fullname_buff [4096]; + +/* Return the full file specification for FILENAME. The specification must be + in VMS syntax in order to be processed by VMS Debug. */ + +static char * +full_name (const char *filename) +{ +#ifdef VMS + FILE *fp = fopen (filename, "r"); + + fgetname (fp, fullname_buff, 1); + fclose (fp); +#else + getcwd (fullname_buff, sizeof (fullname_buff)); + + strcat (fullname_buff, "/"); + strcat (fullname_buff, filename); + + /* ??? Insert hairy code here to translate Unix style file specification + to VMS style. */ +#endif + + return fullname_buff; +} + +/* Lookup a filename (in the list of filenames that we know about here in + vmsdbgout.c) and return its "index". The index of each (known) filename is + just a unique number which is associated with only that one filename. We + need such numbers for the sake of generating labels and references + to those files numbers. If the filename given as an argument is not + found in our current list, add it to the list and assign it the next + available unique index number. In order to speed up searches, we remember + the index of the filename was looked up last. This handles the majority of + all searches. */ + +static unsigned int +lookup_filename (const char *file_name) +{ + static unsigned int last_file_lookup_index = 0; + register char *fn; + register unsigned i; + char *fnam; + long long cdt; + long ebk; + short ffb; + char rfo; + char flen; + struct stat statbuf; + + if (stat (file_name, &statbuf) == 0) + { + long gmtoff; +#ifdef VMS + struct tm *ts; + + /* Adjust for GMT. */ + ts = (struct tm *) localtime (&statbuf.st_ctime); + gmtoff = ts->tm_gmtoff; + + /* VMS has multiple file format types. */ + rfo = statbuf.st_fab_rfm; +#else + /* Is GMT adjustment an issue with a cross-compiler? */ + gmtoff = 0; + + /* Assume stream LF type file. */ + rfo = 2; +#endif + cdt = 10000000 * (statbuf.st_ctime + gmtoff + vms_epoch_offset); + ebk = statbuf.st_size / 512 + 1; + ffb = statbuf.st_size - ((statbuf.st_size / 512) * 512); + fnam = full_name (file_name); + flen = strlen (fnam); + } + else + { + cdt = 0; + ebk = 0; + ffb = 0; + rfo = 0; + fnam = (char *) ""; + flen = 0; + } + + /* Check to see if the file name that was searched on the previous call + matches this file name. If so, return the index. */ + if (last_file_lookup_index != 0) + { + fn = file_info_table[last_file_lookup_index].file_name; + if (strcmp (fnam, fn) == 0) + return last_file_lookup_index; + } + + /* Didn't match the previous lookup, search the table */ + for (i = 1; i < file_info_table_in_use; ++i) + { + fn = file_info_table[i].file_name; + if (strcmp (fnam, fn) == 0) + { + last_file_lookup_index = i; + return i; + } + } + + /* Prepare to add a new table entry by making sure there is enough space in + the table to do so. If not, expand the current table. */ + if (file_info_table_in_use == file_info_table_allocated) + { + + file_info_table_allocated += FILE_TABLE_INCREMENT; + file_info_table = xrealloc (file_info_table, + (file_info_table_allocated + * sizeof (dst_file_info_entry))); + } + + /* Add the new entry to the end of the filename table. */ + file_info_table[file_info_table_in_use].file_name = xstrdup (fnam); + file_info_table[file_info_table_in_use].max_line = 0; + file_info_table[file_info_table_in_use].cdt = cdt; + file_info_table[file_info_table_in_use].ebk = ebk; + file_info_table[file_info_table_in_use].ffb = ffb; + file_info_table[file_info_table_in_use].rfo = rfo; + file_info_table[file_info_table_in_use].flen = flen; + + last_file_lookup_index = file_info_table_in_use++; + return last_file_lookup_index; +} + +/* Output a label to mark the beginning of a source code line entry + and record information relating to this source line, in + 'line_info_table' for later output of the .debug_line section. */ + +static void +vmsdbgout_source_line (register unsigned line, register const char *filename) +{ + if (write_symbols == VMS_AND_DWARF2_DEBUG) + (*dwarf2_debug_hooks.source_line) (line, filename); + + if (debug_info_level >= DINFO_LEVEL_TERSE) + { + dst_line_info_ref line_info; + + targetm.asm_out.internal_label (asm_out_file, LINE_CODE_LABEL, + line_info_table_in_use); + + /* Expand the line info table if necessary. */ + if (line_info_table_in_use == line_info_table_allocated) + { + line_info_table_allocated += LINE_INFO_TABLE_INCREMENT; + line_info_table = xrealloc (line_info_table, + (line_info_table_allocated + * sizeof (dst_line_info_entry))); + } + + /* Add the new entry at the end of the line_info_table. */ + line_info = &line_info_table[line_info_table_in_use++]; + line_info->dst_file_num = lookup_filename (filename); + line_info->dst_line_num = line; + if (line > file_info_table[line_info->dst_file_num].max_line) + file_info_table[line_info->dst_file_num].max_line = line; + } +} + +/* Record the beginning of a new source file, for later output. + At present, unimplemented. */ + +static void +vmsdbgout_start_source_file (unsigned int lineno, const char *filename) +{ + if (write_symbols == VMS_AND_DWARF2_DEBUG) + (*dwarf2_debug_hooks.start_source_file) (lineno, filename); +} + +/* Record the end of a source file, for later output. + At present, unimplemented. */ + +static void +vmsdbgout_end_source_file (unsigned int lineno ATTRIBUTE_UNUSED) +{ + if (write_symbols == VMS_AND_DWARF2_DEBUG) + (*dwarf2_debug_hooks.end_source_file) (lineno); +} + +/* Set up for Debug output at the start of compilation. */ + +static void +vmsdbgout_init (const char *main_input_filename) +{ + const char *language_string = lang_hooks.name; + + if (write_symbols == VMS_AND_DWARF2_DEBUG) + (*dwarf2_debug_hooks.init) (main_input_filename); + + if (debug_info_level == DINFO_LEVEL_NONE) + return; + + /* Remember the name of the primary input file. */ + primary_filename = main_input_filename; + + /* Allocate the initial hunk of the file_info_table. */ + file_info_table + = xcalloc (FILE_TABLE_INCREMENT, sizeof (dst_file_info_entry)); + file_info_table_allocated = FILE_TABLE_INCREMENT; + + /* Skip the first entry - file numbers begin at 1 */ + file_info_table_in_use = 1; + + func_table = (vms_func_ref) xcalloc (FUNC_TABLE_INCREMENT, sizeof (vms_func_node)); + func_table_allocated = FUNC_TABLE_INCREMENT; + func_table_in_use = 1; + + /* Allocate the initial hunk of the line_info_table. */ + line_info_table + = xcalloc (LINE_INFO_TABLE_INCREMENT, sizeof (dst_line_info_entry)); + line_info_table_allocated = LINE_INFO_TABLE_INCREMENT; + /* zero-th entry is allocated, but unused */ + line_info_table_in_use = 1; + + lookup_filename (primary_filename); + + if (!strcmp (language_string, "GNU C")) + module_language = DST_K_C; + else if (!strcmp (language_string, "GNU C++")) + module_language = DST_K_CXX; + else if (!strcmp (language_string, "GNU Ada")) + module_language = DST_K_ADA; + else if (!strcmp (language_string, "GNU F77")) + module_language = DST_K_FORTRAN; + else + module_language = DST_K_UNKNOWN; + + module_producer = concat (language_string, " ", version_string, NULL); + + ASM_GENERATE_INTERNAL_LABEL (text_end_label, TEXT_END_LABEL, 0); + +} + +/* Not implemented in VMS Debug. */ + +static void +vmsdbgout_define (unsigned int lineno, const char *buffer) +{ + if (write_symbols == VMS_AND_DWARF2_DEBUG) + (*dwarf2_debug_hooks.define) (lineno, buffer); +} + +/* Not implemented in VMS Debug. */ + +static void +vmsdbgout_undef (unsigned int lineno, const char *buffer) +{ + if (write_symbols == VMS_AND_DWARF2_DEBUG) + (*dwarf2_debug_hooks.undef) (lineno, buffer); +} + +/* Not implemented in VMS Debug. */ + +static void +vmsdbgout_decl (tree decl) +{ + if (write_symbols == VMS_AND_DWARF2_DEBUG) + (*dwarf2_debug_hooks.function_decl) (decl); +} + +/* Not implemented in VMS Debug. */ + +static void +vmsdbgout_global_decl (tree decl) +{ + if (write_symbols == VMS_AND_DWARF2_DEBUG) + (*dwarf2_debug_hooks.global_decl) (decl); +} + +/* Not implemented in VMS Debug. */ + +static void +vmsdbgout_abstract_function (tree decl) +{ + if (write_symbols == VMS_AND_DWARF2_DEBUG) + (*dwarf2_debug_hooks.outlining_inline_function) (decl); +} + +/* Output stuff that Debug requires at the end of every file and generate the + VMS Debug debugging info. */ + +static void +vmsdbgout_finish (const char *main_input_filename ATTRIBUTE_UNUSED) +{ + unsigned int i; + int totsize; + + if (write_symbols == VMS_AND_DWARF2_DEBUG) + (*dwarf2_debug_hooks.finish) (main_input_filename); + + if (debug_info_level == DINFO_LEVEL_NONE) + return; + + /* Output a terminator label for the .text section. */ + switch_to_section (text_section); + targetm.asm_out.internal_label (asm_out_file, TEXT_END_LABEL, 0); + + /* Output debugging information. + Warning! Do not change the name of the .vmsdebug section without + changing it in the assembler also. */ + switch_to_section (get_named_section (NULL, ".vmsdebug", 0)); + ASM_OUTPUT_ALIGN (asm_out_file, 0); + + totsize = write_modbeg (1); + for (i = 1; i < func_table_in_use; i++) + { + totsize += write_rtnbeg (i, 1); + totsize += write_rtnend (i, 1); + } + totsize += write_pclines (1); + + write_modbeg (0); + for (i = 1; i < func_table_in_use; i++) + { + write_rtnbeg (i, 0); + write_rtnend (i, 0); + } + write_pclines (0); + + if (debug_info_level > DINFO_LEVEL_TERSE) + { + totsize = write_srccorrs (1); + write_srccorrs (0); + } + + totsize = write_modend (1); + write_modend (0); +} +#endif /* VMS_DEBUGGING_INFO */ |
