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db_access.c
(2.43 KB)
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db_access.h
(1.37 KB)
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db_break.c
(7.28 KB)
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db_break.h
(2.03 KB)
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db_capture.c
(10.17 KB)
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db_command.c
(21.03 KB)
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db_command.h
(1.7 KB)
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db_examine.c
(7.2 KB)
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db_expr.c
(7.91 KB)
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db_input.c
(8.11 KB)
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db_lex.c
(7.2 KB)
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db_lex.h
(3.28 KB)
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db_main.c
(7.1 KB)
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db_output.c
(8.03 KB)
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db_output.h
(1.39 KB)
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db_print.c
(2.58 KB)
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db_ps.c
(13.33 KB)
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db_run.c
(9.74 KB)
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db_script.c
(15.49 KB)
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db_sym.c
(10.72 KB)
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db_sym.h
(3.49 KB)
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db_textdump.c
(16.53 KB)
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db_thread.c
(4.22 KB)
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db_variables.c
(3.67 KB)
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db_variables.h
(2.01 KB)
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db_watch.c
(6.71 KB)
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db_watch.h
(1.45 KB)
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db_write_cmd.c
(2.12 KB)
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ddb.h
(10.09 KB)
Editing: db_examine.c
/*- * SPDX-License-Identifier: MIT-CMU * * Mach Operating System * Copyright (c) 1991,1990 Carnegie Mellon University * All Rights Reserved. * * Permission to use, copy, modify and distribute this software and its * documentation is hereby granted, provided that both the copyright * notice and this permission notice appear in all copies of the * software, derivative works or modified versions, and any portions * thereof, and that both notices appear in supporting documentation. * * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. * * Carnegie Mellon requests users of this software to return to * * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU * School of Computer Science * Carnegie Mellon University * Pittsburgh PA 15213-3890 * * any improvements or extensions that they make and grant Carnegie the * rights to redistribute these changes. */ /* * Author: David B. Golub, Carnegie Mellon University * Date: 7/90 */ #include <sys/cdefs.h> __FBSDID("$FreeBSD$"); #include <sys/param.h> #include <sys/systm.h> #include <ddb/ddb.h> #include <ddb/db_lex.h> #include <ddb/db_output.h> #include <ddb/db_command.h> #include <ddb/db_sym.h> #include <ddb/db_access.h> static char db_examine_format[TOK_STRING_SIZE] = "x"; static void db_examine(db_addr_t, char *, int); static void db_search(db_addr_t, int, db_expr_t, db_expr_t, u_int); /* * Examine (print) data. */ /*ARGSUSED*/ void db_examine_cmd(db_expr_t addr, bool have_addr, db_expr_t count, char *modif) { if (modif[0] != '\0') db_strcpy(db_examine_format, modif); if (count == -1) count = 1; db_examine((db_addr_t) addr, db_examine_format, count); } static void db_examine(db_addr_t addr, char *fmt, int count) { int c; db_expr_t value; int size; int width; char * fp; while (--count >= 0 && !db_pager_quit) { fp = fmt; size = 4; while ((c = *fp++) != 0) { switch (c) { case 'b': size = 1; break; case 'h': size = 2; break; case 'l': size = 4; break; case 'g': size = 8; break; case 'a': /* address */ size = sizeof(void *); /* always forces a new line */ if (db_print_position() != 0) db_printf("\n"); db_prev = addr; db_printsym(addr, DB_STGY_ANY); db_printf(":\t"); break; default: if (db_print_position() == 0) { /* Print the address. */ db_printsym(addr, DB_STGY_ANY); db_printf(":\t"); db_prev = addr; } width = size * 4; switch (c) { case 'r': /* signed, current radix */ value = db_get_value(addr, size, true); addr += size; db_printf("%+-*lr", width, (long)value); break; case 'x': /* unsigned hex */ value = db_get_value(addr, size, false); addr += size; db_printf("%-*lx", width, (long)value); break; case 'z': /* signed hex */ value = db_get_value(addr, size, true); addr += size; db_printf("%-*ly", width, (long)value); break; case 'd': /* signed decimal */ value = db_get_value(addr, size, true); addr += size; db_printf("%-*ld", width, (long)value); break; case 'u': /* unsigned decimal */ value = db_get_value(addr, size, false); addr += size; db_printf("%-*lu", width, (long)value); break; case 'o': /* unsigned octal */ value = db_get_value(addr, size, false); addr += size; db_printf("%-*lo", width, (long)value); break; case 'c': /* character */ value = db_get_value(addr, 1, false); addr += 1; if (value >= ' ' && value <= '~') db_printf("%c", (int)value); else db_printf("\\%03o", (int)value); break; case 's': /* null-terminated string */ for (;;) { value = db_get_value(addr, 1, false); addr += 1; if (value == 0) break; if (value >= ' ' && value <= '~') db_printf("%c", (int)value); else db_printf("\\%03o", (int)value); } break; case 'S': /* symbol */ value = db_get_value(addr, sizeof(void *), false); addr += sizeof(void *); db_printsym(value, DB_STGY_ANY); break; case 'i': /* instruction */ addr = db_disasm(addr, false); break; case 'I': /* instruction, alternate form */ addr = db_disasm(addr, true); break; default: break; } if (db_print_position() != 0) db_end_line(1); break; } } } db_next = addr; } /* * Print value. */ static char db_print_format = 'x'; /*ARGSUSED*/ void db_print_cmd(db_expr_t addr, bool have_addr, db_expr_t count, char *modif) { db_expr_t value; if (modif[0] != '\0') db_print_format = modif[0]; switch (db_print_format) { case 'a': db_printsym((db_addr_t)addr, DB_STGY_ANY); break; case 'r': db_printf("%+11lr", (long)addr); break; case 'x': db_printf("%8lx", (unsigned long)addr); break; case 'z': db_printf("%8ly", (long)addr); break; case 'd': db_printf("%11ld", (long)addr); break; case 'u': db_printf("%11lu", (unsigned long)addr); break; case 'o': db_printf("%16lo", (unsigned long)addr); break; case 'c': value = addr & 0xFF; if (value >= ' ' && value <= '~') db_printf("%c", (int)value); else db_printf("\\%03o", (int)value); break; default: db_print_format = 'x'; db_error("Syntax error: unsupported print modifier\n"); /*NOTREACHED*/ } db_printf("\n"); } void db_print_loc_and_inst(db_addr_t loc) { db_expr_t off; db_printsym(loc, DB_STGY_PROC); if (db_search_symbol(loc, DB_STGY_PROC, &off) != C_DB_SYM_NULL) { db_printf(":\t"); (void)db_disasm(loc, false); } } /* * Search for a value in memory. * Syntax: search [/bhl] addr value [mask] [,count] */ void db_search_cmd(db_expr_t dummy1, bool dummy2, db_expr_t dummy3, char *dummy4) { int t; db_addr_t addr; int size; db_expr_t value; db_expr_t mask; db_expr_t count; t = db_read_token(); if (t == tSLASH) { t = db_read_token(); if (t != tIDENT) { bad_modifier: db_printf("Bad modifier\n"); db_flush_lex(); return; } if (!strcmp(db_tok_string, "b")) size = 1; else if (!strcmp(db_tok_string, "h")) size = 2; else if (!strcmp(db_tok_string, "l")) size = 4; else goto bad_modifier; } else { db_unread_token(t); size = 4; } if (!db_expression((db_expr_t *)&addr)) { db_printf("Address missing\n"); db_flush_lex(); return; } if (!db_expression(&value)) { db_printf("Value missing\n"); db_flush_lex(); return; } if (!db_expression(&mask)) mask = 0xffffffffUL; t = db_read_token(); if (t == tCOMMA) { if (!db_expression(&count)) { db_printf("Count missing\n"); db_flush_lex(); return; } } else { db_unread_token(t); count = -1; /* effectively forever */ } db_skip_to_eol(); db_search(addr, size, value, mask, count); } static void db_search(db_addr_t addr, int size, db_expr_t value, db_expr_t mask, unsigned int count) { while (count-- != 0) { db_prev = addr; if ((db_get_value(addr, size, false) & mask) == value) break; addr += size; } db_next = addr; }
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