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- #include "defs.h"
- #include "initialize.h"
- #include "symtab.h"
- #include "param.h"
- #include <stdio.h>
- #include <obstack.h>
- START_FILE
- struct obstack obstack1;
- struct obstack *symbol_obstack = &obstack1;
- struct type *builtin_type_void;
- struct type *builtin_type_char;
- struct type *builtin_type_short;
- struct type *builtin_type_int;
- struct type *builtin_type_long;
- struct type *builtin_type_unsigned_char;
- struct type *builtin_type_unsigned_short;
- struct type *builtin_type_unsigned_int;
- struct type *builtin_type_unsigned_long;
- struct type *builtin_type_float;
- struct type *builtin_type_double;
- struct symtab *
- lookup_symtab (name)
- char *name;
- {
- register struct symtab *s;
- register char *copy;
- for (s = symtab_list; s; s = s->next)
- if (!strcmp (name, s->filename))
- return s;
-
- copy = (char *) alloca (strlen (name) + 3);
- strcpy (copy, name);
- strcat (copy, ".c");
- for (s = symtab_list; s; s = s->next)
- if (!strcmp (copy, s->filename))
- return s;
- return 0;
- }
- struct type *
- lookup_typename (name, block, noerr)
- char *name;
- struct block *block;
- int noerr;
- {
- register struct symbol *sym = lookup_symbol (name, block, VAR_NAMESPACE);
- if (sym == 0 || SYMBOL_CLASS (sym) != LOC_TYPEDEF)
- {
- if (!strcmp (name, "int"))
- return builtin_type_int;
- if (!strcmp (name, "long"))
- return builtin_type_long;
- if (!strcmp (name, "short"))
- return builtin_type_short;
- if (!strcmp (name, "char"))
- return builtin_type_char;
- if (!strcmp (name, "float"))
- return builtin_type_float;
- if (!strcmp (name, "double"))
- return builtin_type_double;
- if (!strcmp (name, "void"))
- return builtin_type_void;
- if (noerr)
- return 0;
- error ("No type named %s.", name);
- }
- return SYMBOL_TYPE (sym);
- }
- struct type *
- lookup_unsigned_typename (name)
- char *name;
- {
- if (!strcmp (name, "int"))
- return builtin_type_unsigned_int;
- if (!strcmp (name, "long"))
- return builtin_type_unsigned_long;
- if (!strcmp (name, "short"))
- return builtin_type_unsigned_short;
- if (!strcmp (name, "char"))
- return builtin_type_unsigned_char;
- error ("No type named unsigned %s.", name);
- }
- struct type *
- lookup_struct (name, block)
- char *name;
- struct block *block;
- {
- register struct symbol *sym = lookup_symbol (name, block, STRUCT_NAMESPACE);
- if (sym == 0)
- error ("No struct type named %s.", name);
- if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT)
- error ("This context has union or enum %s, not a struct.", name);
- return SYMBOL_TYPE (sym);
- }
- struct type *
- lookup_union (name, block)
- char *name;
- struct block *block;
- {
- register struct symbol *sym = lookup_symbol (name, block, STRUCT_NAMESPACE);
- if (sym == 0)
- error ("No union type named %s.", name);
- if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_UNION)
- error ("This context has struct or enum %s, not a union.", name);
- return SYMBOL_TYPE (sym);
- }
- struct type *
- lookup_enum (name, block)
- char *name;
- struct block *block;
- {
- register struct symbol *sym = lookup_symbol (name, block, STRUCT_NAMESPACE);
- if (sym == 0)
- error ("No enum type named %s.", name);
- if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_ENUM)
- error ("This context has struct or union %s, not an enum.", name);
- return SYMBOL_TYPE (sym);
- }
- struct type *
- lookup_pointer_type (type)
- struct type *type;
- {
- register struct type *ptype = TYPE_POINTER_TYPE (type);
- if (ptype) return ptype;
-
- if (TYPE_FLAGS (type) & TYPE_FLAG_PERM)
- ptype = (struct type *) xmalloc (sizeof (struct type));
- else
- ptype = (struct type *) obstack_alloc (symbol_obstack,
- sizeof (struct type));
- bzero (ptype, sizeof (struct type));
- TYPE_TARGET_TYPE (ptype) = type;
- TYPE_POINTER_TYPE (type) = ptype;
-
- if (TYPE_FLAGS (type) & TYPE_FLAG_PERM)
- TYPE_FLAGS (ptype) |= TYPE_FLAG_PERM;
-
- TYPE_LENGTH (ptype) = sizeof (char *);
- TYPE_CODE (ptype) = TYPE_CODE_PTR;
- return ptype;
- }
- struct type *
- lookup_function_type (type)
- struct type *type;
- {
- register struct type *ptype = TYPE_FUNCTION_TYPE (type);
- if (ptype) return ptype;
-
- if (TYPE_FLAGS (type) & TYPE_FLAG_PERM)
- ptype = (struct type *) xmalloc (sizeof (struct type));
- else
- ptype = (struct type *) obstack_alloc (symbol_obstack,
- sizeof (struct type));
- bzero (ptype, sizeof (struct type));
- TYPE_TARGET_TYPE (ptype) = type;
- TYPE_FUNCTION_TYPE (type) = ptype;
-
- if (TYPE_FLAGS (type) & TYPE_FLAG_PERM)
- TYPE_FLAGS (ptype) |= TYPE_FLAG_PERM;
- TYPE_LENGTH (ptype) = 1;
- TYPE_CODE (ptype) = TYPE_CODE_FUNC;
- TYPE_NFIELDS (ptype) = 0;
- return ptype;
- }
- void
- smash_to_pointer_type (type, to_type)
- struct type *type, *to_type;
- {
- bzero (type, sizeof (struct type));
- TYPE_TARGET_TYPE (type) = to_type;
-
- TYPE_LENGTH (type) = sizeof (char *);
- TYPE_CODE (type) = TYPE_CODE_PTR;
- if (TYPE_POINTER_TYPE (to_type) == 0
- && !(TYPE_FLAGS (type) & TYPE_FLAG_PERM))
- {
- TYPE_POINTER_TYPE (to_type) = type;
- }
- }
- void
- smash_to_function_type (type, to_type)
- struct type *type, *to_type;
- {
- bzero (type, sizeof (struct type));
- TYPE_TARGET_TYPE (type) = to_type;
- TYPE_LENGTH (type) = 1;
- TYPE_CODE (type) = TYPE_CODE_FUNC;
- TYPE_NFIELDS (type) = 0;
- if (TYPE_FUNCTION_TYPE (to_type) == 0
- && !(TYPE_FLAGS (type) & TYPE_FLAG_PERM))
- {
- TYPE_FUNCTION_TYPE (to_type) = type;
- }
- }
- static struct symbol *lookup_block_symbol ();
- struct symbol *
- lookup_symbol (name, block, namespace)
- char *name;
- register struct block *block;
- enum namespace namespace;
- {
- register int i, n;
- register struct symbol *sym;
- register struct symtab *s;
- struct blockvector *bv;
-
- while (block != 0)
- {
- sym = lookup_block_symbol (block, name, namespace);
- if (sym) return sym;
- block = BLOCK_SUPERBLOCK (block);
- }
-
- for (s = symtab_list; s; s = s->next)
- {
- bv = BLOCKVECTOR (s);
- block = BLOCKVECTOR_BLOCK (bv, 0);
- sym = lookup_block_symbol (block, name, namespace);
- if (sym) return sym;
- }
-
- for (s = symtab_list; s; s = s->next)
- {
- bv = BLOCKVECTOR (s);
- block = BLOCKVECTOR_BLOCK (bv, 1);
- sym = lookup_block_symbol (block, name, namespace);
- if (sym) return sym;
- }
- return 0;
- }
- static struct symbol *
- lookup_block_symbol (block, name, namespace)
- register struct block *block;
- char *name;
- enum namespace namespace;
- {
- register int bot, top, inc;
- register struct symbol *sym;
- top = BLOCK_NSYMS (block);
- bot = 0;
-
- while (1)
- {
- inc = (top - bot + 1);
-
- if (inc < 7)
- break;
- inc >>= 1;
- sym = BLOCK_SYM (block, bot + inc);
- if (strcmp (SYMBOL_NAME (sym), name) < 0)
- bot += inc;
- else
- top = bot + inc;
- }
-
- top = BLOCK_NSYMS (block);
- while (bot < top)
- {
- sym = BLOCK_SYM (block, bot);
- inc = strcmp (SYMBOL_NAME (sym), name);
- if (inc == 0 && SYMBOL_NAMESPACE (sym) == namespace)
- return sym;
- if (inc > 0)
- return 0;
- bot++;
- }
- return 0;
- }
- struct symbol *
- block_function (bl)
- struct block *bl;
- {
- while (BLOCK_FUNCTION (bl) == 0 && BLOCK_SUPERBLOCK (bl) != 0)
- bl = BLOCK_SUPERBLOCK (bl);
- return BLOCK_FUNCTION (bl);
- }
- static struct symtab *
- find_pc_symtab (pc)
- register CORE_ADDR pc;
- {
- register struct block *b;
- struct blockvector *bv;
- register struct symtab *s;
-
- for (s = symtab_list; s; s = s->next)
- {
- bv = BLOCKVECTOR (s);
- b = BLOCKVECTOR_BLOCK (bv, 0);
- if (BLOCK_START (b) <= pc
- && BLOCK_END (b) > pc)
- break;
- }
- return s;
- }
- struct symtab_and_line
- find_pc_line (pc, notcurrent)
- CORE_ADDR pc;
- int notcurrent;
- {
- struct symtab *s;
- register struct linetable *l;
- register int len;
- register int i, item;
- int line;
- struct symtab_and_line value;
- struct blockvector *bv;
-
- int best_line = 0;
- CORE_ADDR best_pc = 0;
- CORE_ADDR best_end = 0;
- struct symtab *best_symtab = 0;
-
- int alt_line = 0;
- CORE_ADDR alt_pc = 0;
- struct symtab *alt_symtab = 0;
-
- int prev_line;
- CORE_ADDR prev_pc;
-
- int first_line;
- CORE_ADDR first_pc;
-
- if (notcurrent) pc -= 1;
- s = find_pc_symtab (pc);
- if (s == 0)
- {
- value.symtab = 0;
- value.line = 0;
- value.pc = pc;
- return value;
- }
- bv = BLOCKVECTOR (s);
-
- for (; s && BLOCKVECTOR (s) == bv; s = s->next)
- {
-
- l = LINETABLE (s);
- len = l->nitems;
- prev_line = -1;
- first_line = -1;
- for (i = 0; i < len; i++)
- {
- item = l->item[i];
- if (item < 0)
- line = - item - 1;
- else
- {
- line++;
- if (first_line < 0)
- {
- first_line = line;
- first_pc = item;
- }
-
- if (pc >= item)
- {
- prev_line = line;
- prev_pc = item;
- }
- else
- break;
- }
- }
-
- if (prev_line >= 0 && prev_pc > best_pc)
- {
- best_pc = prev_pc;
- best_line = prev_line;
- best_symtab = s;
- if (i < len)
- best_end = item;
- else
- best_end = 0;
- }
-
- if (first_line >= 0 && first_pc > pc
- && (alt_pc == 0 || first_pc < alt_pc))
- {
- alt_pc = first_pc;
- alt_line = first_line;
- alt_symtab = s;
- }
- }
- if (best_symtab == 0)
- {
- value.symtab = alt_symtab;
- value.line = alt_line - 1;
- value.pc = BLOCK_END (BLOCKVECTOR_BLOCK (bv, 0));
- value.end = alt_pc;
- }
- else
- {
- value.symtab = best_symtab;
- value.line = best_line;
- value.pc = best_pc;
- value.end = (best_end ? best_end
- : (alt_pc ? alt_pc
- : BLOCK_END (BLOCKVECTOR_BLOCK (bv, 0))));
- }
- return value;
- }
- int
- find_line_pc_range (symtab, thisline, startptr, endptr)
- struct symtab *symtab;
- int thisline;
- CORE_ADDR *startptr, *endptr;
- {
- register struct linetable *l;
- register int i, line, item;
- int len;
- int return_next = 0;
- register CORE_ADDR prev_pc;
- CORE_ADDR last_pc;
- if (symtab == 0)
- return 0;
- l = LINETABLE (symtab);
- len = l->nitems;
- prev_pc = -1;
- for (i = 0; i < len; i++)
- {
- item = l->item[i];
- if (item < 0)
- line = - item - 1;
- else
- {
- line++;
-
- if (line > thisline)
- {
-
- *startptr = prev_pc == -1 ? item : prev_pc;
- *endptr = item;
- return 1;
- }
-
- if (line == thisline)
- prev_pc = item;
- last_pc = item;
- }
- }
- if (return_next)
- {
-
- *startptr = last_pc;
- *endptr = BLOCK_END (BLOCKVECTOR_BLOCK (BLOCKVECTOR (symtab), 0));
- return 1;
- }
- return 0;
- }
- CORE_ADDR
- find_line_pc (symtab, line)
- struct symtab *symtab;
- int line;
- {
- register struct linetable *l;
- register int len;
- register int i;
- register int item;
- register int nextline = -1;
- if (line <= 0)
- return 0;
- l = LINETABLE (symtab);
- len = l->nitems;
- for (i = 0; i < len; i++)
- {
- item = l->item[i];
- if (item < 0)
- nextline = - item - 1;
- else
- {
- nextline++;
- if (line <= nextline)
- return item;
- }
- }
- return 0;
- }
- int
- find_pc_line_pc_range (pc, startptr, endptr)
- CORE_ADDR pc;
- CORE_ADDR *startptr, *endptr;
- {
- struct symtab_and_line sal;
- sal = find_pc_line (pc, 0);
- *startptr = sal.pc;
- *endptr = sal.end;
- return sal.symtab != 0;
- }
- struct symtab_and_line
- decode_line_1 (argptr, funfirstline, default_symtab, default_line)
- char **argptr;
- int funfirstline;
- struct symtab *default_symtab;
- int default_line;
- {
- struct symtab_and_line value;
- register char *p, *p1;
- register struct symtab *s;
- register struct symbol *sym;
- register CORE_ADDR pc;
- register int i;
- char *copy;
-
- if (default_symtab == 0)
- {
- default_symtab = current_source_symtab;
- default_line = current_source_line;
- }
-
- if (**argptr == '*')
- {
- (*argptr)++;
- pc = parse_and_eval_address_1 (argptr);
- value = find_pc_line (pc, 0);
- value.pc = pc;
- return value;
- }
-
- if (symtab_list == 0)
- error ("No symbol table is loaded. Use the \"symbol-file\" command.");
- s = 0;
- for (p = *argptr; *p; p++)
- {
- if (p[0] == ':' || p[0] == ' ' || p[0] == '\t')
- break;
- }
- while (p[0] == ' ' || p[0] == '\t') p++;
- if (p[0] == ':')
- {
-
- p1 = p;
- while (p != *argptr && p[-1] == ' ') --p;
- copy = (char *) alloca (p - *argptr + 1);
- bcopy (*argptr, copy, p - *argptr);
- copy[p - *argptr] = 0;
-
- s = lookup_symtab (copy);
- if (s == 0)
- error ("No source file named %s.", copy);
-
- p = p1 + 1;
- while (*p == ' ' || *p == '\t') p++;
- *argptr = p;
- }
-
-
- p = *argptr;
- if (*p == '-' || *p == '+') p++;
- while (*p >= '0' && *p <= '9')
- p++;
- if (p != *argptr && (*p == 0 || *p == ' ' || *p == '\t' || *p == ','))
- {
-
- enum sign {none, plus, minus} sign = none;
- if (**argptr == '+')
- sign = plus, (*argptr)++;
- else if (**argptr == '-')
- sign = minus, (*argptr)++;
- value.line = atoi (*argptr);
- switch (sign)
- {
- case plus:
- if (p == *argptr)
- value.line = 5;
- if (s == 0)
- value.line = default_line + value.line;
- break;
- case minus:
- if (p == *argptr)
- value.line = 15;
- if (s == 0)
- value.line = default_line - value.line;
- else
- value.line = 1;
- break;
- }
- while (*p == ' ' || *p == '\t') p++;
- *argptr = p;
- if (s == 0)
- s = default_symtab;
- value.symtab = s;
- value.pc = 0;
- return value;
- }
-
- p = *argptr;
- while (*p && *p != ' ' && *p != '\t' && *p != ',') p++;
- copy = (char *) alloca (p - *argptr + 1);
- bcopy (*argptr, copy, p - *argptr);
- copy[p - *argptr] = 0;
- while (*p == ' ' || *p == '\t') p++;
- *argptr = p;
-
- sym = lookup_symbol (copy, s ? BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), 1) : 0,
- VAR_NAMESPACE);
- if (sym && SYMBOL_CLASS (sym) == LOC_BLOCK)
- {
-
- pc = BLOCK_START (SYMBOL_BLOCK_VALUE (sym)) + FUNCTION_START_OFFSET;
- if (funfirstline)
- SKIP_PROLOGUE (pc);
- value = find_pc_line (pc, 0);
- value.pc = (value.end && value.pc != pc) ? value.end : pc;
- return value;
- }
- if (sym)
- error ("%s is not a function.", copy);
- for (i = 0; i < misc_function_count; i++)
- if (!strcmp (misc_function_vector[i].name, copy))
- {
- value.symtab = 0;
- value.line = 0;
- value.pc = misc_function_vector[i].address + FUNCTION_START_OFFSET;
- if (funfirstline)
- SKIP_PROLOGUE (value.pc);
- return value;
- }
- error ("Function %s not defined.", copy);
- }
- struct symtab_and_line
- decode_line_spec (string, funfirstline)
- char *string;
- int funfirstline;
- {
- struct symtab_and_line sal;
- if (string == 0)
- error ("Empty line specification.");
- sal = decode_line_1 (&string, funfirstline,
- current_source_symtab, current_source_line);
- if (*string)
- error ("Junk at end of line specification: %s", string);
- return sal;
- }
- static void
- sources_info ()
- {
- register struct symtab *s;
- register int column = 0;
- if (symtab_list == 0)
- {
- printf ("No symbol table is loaded.\n");
- return;
- }
- printf ("Source files for which symbol table is known:\n");
- for (s = symtab_list; s; s = s->next)
- {
- if (column != 0 && column + strlen (s->filename) >= 70)
- {
- printf ("\n");
- column = 0;
- }
- else if (column != 0)
- {
- printf (" ");
- column++;
- }
- printf ("%s", s->filename);
- column += strlen (s->filename);
- if (s->next)
- {
- printf (",");
- column++;
- }
- }
- printf ("\n");
- }
- #define MORE \
- { print_count++; \
- if (print_count >= 21) \
- { printf ("--Type Return to print more--"); \
- print_count = 0; \
- fflush (stdout); \
- read_line (); } }
- static void
- list_symbols (regexp, class)
- char *regexp;
- int class;
- {
- register struct symtab *s;
- register struct blockvector *bv;
- struct blockvector *prev_bv = 0;
- register struct block *b;
- register int i, j;
- register struct symbol *sym;
- char *val;
- int found_in_file;
- static char *classnames[]
- = {"variable", "function", "type"};
- int print_count = 0;
- if (regexp)
- if (val = (char *) re_comp (regexp))
- error ("Invalid regexp: %s", val);
- printf (regexp
- ? "All %ss matching regular expression \"%s\":\n"
- : "All defined %ss:\n",
- classnames[class],
- regexp);
- for (s = symtab_list; s; s = s->next)
- {
- found_in_file = 0;
- bv = BLOCKVECTOR (s);
-
- if (bv != prev_bv)
- for (i = 0; i < 2; i++)
- {
- b = BLOCKVECTOR_BLOCK (bv, i);
- for (j = 0; j < BLOCK_NSYMS (b); j++)
- {
- QUIT;
- sym = BLOCK_SYM (b, j);
- if ((regexp == 0 || re_exec (SYMBOL_NAME (sym)))
- && ((class == 0 && SYMBOL_CLASS (sym) != LOC_TYPEDEF
- && SYMBOL_CLASS (sym) != LOC_BLOCK)
- || (class == 1 && SYMBOL_CLASS (sym) == LOC_BLOCK)
- || (class == 2 && SYMBOL_CLASS (sym) == LOC_TYPEDEF)))
- {
- if (!found_in_file)
- {
- printf ("\nFile %s:\n", s->filename);
- print_count += 2;
- }
- found_in_file = 1;
- MORE;
- if (i == 1)
- printf ("static ");
- type_print (SYMBOL_TYPE (sym),
- (SYMBOL_CLASS (sym) == LOC_TYPEDEF
- ? "" : SYMBOL_NAME (sym)),
- stdout, 0);
- printf (";\n");
- }
- }
- }
- prev_bv = bv;
- }
- }
- static void
- variables_info (regexp)
- char *regexp;
- {
- list_symbols (regexp, 0);
- }
- static void
- functions_info (regexp)
- char *regexp;
- {
- list_symbols (regexp, 1);
- }
- static void
- types_info (regexp)
- char *regexp;
- {
- list_symbols (regexp, 2);
- }
- static
- struct type *
- init_type (code, length, uns, name)
- enum type_code code;
- int length, uns;
- char *name;
- {
- register struct type *type;
- type = (struct type *) xmalloc (sizeof (struct type));
- bzero (type, sizeof *type);
- TYPE_CODE (type) = code;
- TYPE_LENGTH (type) = length;
- TYPE_FLAGS (type) = uns ? TYPE_FLAG_UNSIGNED : 0;
- TYPE_FLAGS (type) |= TYPE_FLAG_PERM;
- TYPE_NFIELDS (type) = 0;
- TYPE_NAME (type) = name;
- return type;
- }
- static
- initialize ()
- {
- add_info ("variables", variables_info,
- "All global and static variable names, or those matching REGEXP.");
- add_info ("functions", functions_info,
- "All function names, or those matching REGEXP.");
- add_info ("types", types_info,
- "All types names, or those matching REGEXP.");
- add_info ("sources", sources_info,
- "Source files in the program.");
- obstack_init (symbol_obstack);
- builtin_type_void = init_type (TYPE_CODE_VOID, 0, 0, "void");
- builtin_type_float = init_type (TYPE_CODE_FLT, sizeof (float), 0, "float");
- builtin_type_double = init_type (TYPE_CODE_FLT, sizeof (double), 0, "double");
- builtin_type_char = init_type (TYPE_CODE_INT, sizeof (char), 0, "char");
- builtin_type_short = init_type (TYPE_CODE_INT, sizeof (short), 0, "short");
- builtin_type_long = init_type (TYPE_CODE_INT, sizeof (long), 0, "long");
- builtin_type_int = init_type (TYPE_CODE_INT, sizeof (int), 0, "int");
- builtin_type_unsigned_char = init_type (TYPE_CODE_INT, sizeof (char), 1, "unsigned char");
- builtin_type_unsigned_short = init_type (TYPE_CODE_INT, sizeof (short), 1, "unsigned short");
- builtin_type_unsigned_long = init_type (TYPE_CODE_INT, sizeof (long), 1, "unsigned long");
- builtin_type_unsigned_int = init_type (TYPE_CODE_INT, sizeof (int), 1, "unsigned int");
- }
- END_FILE
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