| ddb.4 (d0353b836e88609b9400851d32e0aa6645ff9be3) | ddb.4 (c2d03ea87913b49c09051746bb4ab5b45c80c49a) |
|---|---|
| 1.\" 2.\" Mach Operating System 3.\" Copyright (c) 1991,1990 Carnegie Mellon University 4.\" All Rights Reserved. 5.\" 6.\" Permission to use, copy, modify and distribute this software and its 7.\" documentation is hereby granted, provided that both the copyright 8.\" notice and this permission notice appear in all copies of the --- 177 unchanged lines hidden (view full) --- 186except that the next address displayed by it is used as the start address. 187.It Cm xb 188Examine backward: 189Execute an examine command with the last specified parameters to it 190except that the last start address subtracted by the size displayed by it 191is used as the start address. 192.It Cm print Ns Op Cm /acdoruxz 193Print | 1.\" 2.\" Mach Operating System 3.\" Copyright (c) 1991,1990 Carnegie Mellon University 4.\" All Rights Reserved. 5.\" 6.\" Permission to use, copy, modify and distribute this software and its 7.\" documentation is hereby granted, provided that both the copyright 8.\" notice and this permission notice appear in all copies of the --- 177 unchanged lines hidden (view full) --- 186except that the next address displayed by it is used as the start address. 187.It Cm xb 188Examine backward: 189Execute an examine command with the last specified parameters to it 190except that the last start address subtracted by the size displayed by it 191is used as the start address. 192.It Cm print Ns Op Cm /acdoruxz 193Print |
| 194.No Ar addr Ns s | 194.Ar addr Ns s |
| 195according to the modifier character (as described above for 196.Li examine ) . 197Valid formats are: 198.Li a , 199.Li x , 200.Li z , 201.Li o , 202.Li d , --- 10 unchanged lines hidden (view full) --- 213.Pp 214will print like: 215.Bd -literal -offset indent 216eax = xxxxxx 217ecx = yyyyyy 218.Ed 219.It Xo 220.Cm write Ns Op Cm /bhl | 195according to the modifier character (as described above for 196.Li examine ) . 197Valid formats are: 198.Li a , 199.Li x , 200.Li z , 201.Li o , 202.Li d , --- 10 unchanged lines hidden (view full) --- 213.Pp 214will print like: 215.Bd -literal -offset indent 216eax = xxxxxx 217ecx = yyyyyy 218.Ed 219.It Xo 220.Cm write Ns Op Cm /bhl |
| 221.No Ar addr Ar expr1 Op Ar "expr2 ..." | 221.Ar addr Ar expr1 Op Ar "expr2 ..." |
| 222.Xc 223Write the expressions specified after 224.Ar addr 225on the command line at succeeding locations starting with 226.Ar addr 227The write unit size can be specified in the modifier with a letter 228.Li b 229(byte), --- 4 unchanged lines hidden (view full) --- 234long word is assumed. 235.Pp 236.Sy Warning : 237since there is no delimiter between expressions, strange 238things may happen. 239It's best to enclose each expression in parentheses. 240.It Xo 241.Cm set | 222.Xc 223Write the expressions specified after 224.Ar addr 225on the command line at succeeding locations starting with 226.Ar addr 227The write unit size can be specified in the modifier with a letter 228.Li b 229(byte), --- 4 unchanged lines hidden (view full) --- 234long word is assumed. 235.Pp 236.Sy Warning : 237since there is no delimiter between expressions, strange 238things may happen. 239It's best to enclose each expression in parentheses. 240.It Xo 241.Cm set |
| 242.No Li \&$ Ns Ar variable | 242.Li \&$ Ns Ar variable |
| 243.Op Li = 244.Ar expr 245.Xc 246Set the named variable or register with the value of 247.Ar expr . 248Valid variable names are described below. 249.It Cm break Ns Op Cm /u 250Set a break point at --- 70 unchanged lines hidden (view full) --- 321.It Cm match Ns Op Cm /p 322Stop at the matching return instruction. 323If the 324.Li p 325modifier is specified, print the call nesting depth and the 326cumulative instruction count at each call or return. Otherwise, 327only print when the matching return is hit. 328.It Xo | 243.Op Li = 244.Ar expr 245.Xc 246Set the named variable or register with the value of 247.Ar expr . 248Valid variable names are described below. 249.It Cm break Ns Op Cm /u 250Set a break point at --- 70 unchanged lines hidden (view full) --- 321.It Cm match Ns Op Cm /p 322Stop at the matching return instruction. 323If the 324.Li p 325modifier is specified, print the call nesting depth and the 326cumulative instruction count at each call or return. Otherwise, 327only print when the matching return is hit. 328.It Xo |
| 329.No Cm trace Ns Op Cm /u | 329.Cm trace Ns Op Cm /u |
| 330.Op Ar frame 331.Op , Ns Ar count 332.Xc 333Stack trace. The 334.Li u 335option traces user space; if omitted, 336.Cm trace 337only traces 338kernel space. 339.Ar count 340is the number of frames to be traced. 341If 342.Ar count 343is omitted, all frames are printed. 344.Pp 345.Sy Warning : 346User space stack trace is valid 347only if the machine dependent code supports it. 348.It Xo | 330.Op Ar frame 331.Op , Ns Ar count 332.Xc 333Stack trace. The 334.Li u 335option traces user space; if omitted, 336.Cm trace 337only traces 338kernel space. 339.Ar count 340is the number of frames to be traced. 341If 342.Ar count 343is omitted, all frames are printed. 344.Pp 345.Sy Warning : 346User space stack trace is valid 347only if the machine dependent code supports it. 348.It Xo |
| 349.No Cm search Ns Op Cm /bhl | 349.Cm search Ns Op Cm /bhl |
| 350.Ar addr 351.Ar value 352.Op Ar mask 353.Op , Ns Ar count 354.Xc 355Search memory for 356.Ar value . 357This command might fail in interesting --- 42 unchanged lines hidden (view full) --- 400If the 401.Li f 402option is specified the 403complete object is printed. 404.It Cm "show watches" 405Displays all watchpoints. 406.It Xo 407.Cm watch | 350.Ar addr 351.Ar value 352.Op Ar mask 353.Op , Ns Ar count 354.Xc 355Search memory for 356.Ar value . 357This command might fail in interesting --- 42 unchanged lines hidden (view full) --- 400If the 401.Li f 402option is specified the 403complete object is printed. 404.It Cm "show watches" 405Displays all watchpoints. 406.It Xo 407.Cm watch |
| 408.No Ar addr Ns Li \&, Ns Ar size | 408.Ar addr Ns Li \&, Ns Ar size |
| 409.Xc 410Set a watchpoint for a region. Execution stops 411when an attempt to modify the region occurs. 412The 413.Ar size 414argument defaults to 4. 415If you specify a wrong space address, the request is rejected 416with an error message. --- 11 unchanged lines hidden (view full) --- 428.Em i386 429architecture. 430.It Cm help 431Print a short summary of the available commands and command 432abbreviations. 433.El 434.Sh VARIABLES 435The debugger accesses registers and variables as | 409.Xc 410Set a watchpoint for a region. Execution stops 411when an attempt to modify the region occurs. 412The 413.Ar size 414argument defaults to 4. 415If you specify a wrong space address, the request is rejected 416with an error message. --- 11 unchanged lines hidden (view full) --- 428.Em i386 429architecture. 430.It Cm help 431Print a short summary of the available commands and command 432abbreviations. 433.El 434.Sh VARIABLES 435The debugger accesses registers and variables as |
| 436.No Li \&$ Ns Em name . | 436.Li \&$ Ns Em name . |
| 437Register names are as in the 438.Dq Cm show registers 439command. 440Some variables are suffixed with numbers, and may have some modifier 441following a colon immediately after the variable name. 442For example, register variables can have a 443.Li u 444modifier to indicate user register (e.g., --- 87 unchanged lines hidden --- | 437Register names are as in the 438.Dq Cm show registers 439command. 440Some variables are suffixed with numbers, and may have some modifier 441following a colon immediately after the variable name. 442For example, register variables can have a 443.Li u 444modifier to indicate user register (e.g., --- 87 unchanged lines hidden --- |