"

jv:libgdbs - GNU Debugger Interface Library

Copyright (C) 2015-now Jan Vrany

"

"{ Package: 'jv:libgdbs' }"

"{ NameSpace: Smalltalk }"

GDBMICommand subclass:#GDBMI_data_disassemble

	instanceVariableNames:''

	classVariableNames:''

	poolDictionaries:''

	category:'GDB-Core-Commands-MI'

!

!GDBMI_data_disassemble class methodsFor:'documentation'!

copyright

"

jv:libgdbs - GNU Debugger Interface Library

Copyright (C) 2015-now Jan Vrany

"

!

documentation

"

The `-data-disassemble' Command

-------------------------------

Synopsis

........

      -data-disassemble

         [ -s START-ADDR -e END-ADDR ]

       | [ -f FILENAME -l LINENUM [ -n LINES ] ]

       -- MODE

Where:

`START-ADDR'

     is the beginning address (or `$pc')

`END-ADDR'

     is the end address

`FILENAME'

     is the name of the file to disassemble

`LINENUM'

     is the line number to disassemble around

`LINES'

     is the number of disassembly lines to be produced.  If it is -1,

     the whole function will be disassembled, in case no END-ADDR is

     specified.  If END-ADDR is specified as a non-zero value, and

     LINES is lower than the number of disassembly lines between

     START-ADDR and END-ADDR, only LINES lines are displayed; if LINES

     is higher than the number of lines between START-ADDR and

     END-ADDR, only the lines up to END-ADDR are displayed.

`MODE'

     is either 0 (meaning only disassembly), 1 (meaning mixed source and

     disassembly), 2 (meaning disassembly with raw opcodes), or 3

     (meaning mixed source and disassembly with raw opcodes).

Result

......

The result of the `-data-disassemble' command will be a list named

`asm_insns', the contents of this list depend on the MODE used with the

`-data-disassemble' command.

   For modes 0 and 2 the `asm_insns' list contains tuples with the

following fields:

`address'

     The address at which this instruction was disassembled.

`func-name'

     The name of the function this instruction is within.

`offset'

     The decimal offset in bytes from the start of `func-name'.

`inst'

     The text disassembly for this `address'.

`opcodes'

     This field is only present for mode 2.  This contains the raw

     opcode bytes for the `inst' field.

   For modes 1 and 3 the `asm_insns' list contains tuples named

`src_and_asm_line', each of which has the following fields:

`line'

     The line number within `file'.

`file'

     The file name from the compilation unit.  This might be an absolute

     file name or a relative file name depending on the compile command

     used.

`fullname'

     Absolute file name of `file'.  It is converted to a canonical form

     using the source file search path (*note Specifying Source

     Directories: Source Path.)  and after resolving all the symbolic

     links.

     If the source file is not found this field will contain the path as

     present in the debug information.

`line_asm_insn'

     This is a list of tuples containing the disassembly for `line' in

     `file'.  The fields of each tuple are the same as for

     `-data-disassemble' in MODE 0 and 2, so `address', `func-name',

     `offset', `inst', and optionally `opcodes'.

   Note that whatever included in the `inst' field, is not manipulated

directly by GDB/MI, i.e., it is not possible to adjust its format.

{No value for `GDBN'} Command

.............................

The corresponding {No value for `GDBN'} command is `disassemble'.

Example

.......

Disassemble from the current value of `$pc' to `$pc + 20':

     (gdb)

     -data-disassemble -s $pc -e '$pc + 20' -- 0

     ^done,

     asm_insns=[

     {address='0x000107c0',func-name='main',offset='4',

     inst='mov  2, %o0'},

     {address='0x000107c4',func-name='main',offset='8',

     inst='sethi  %hi(0x11800), %o2'},

     {address='0x000107c8',func-name='main',offset='12',

     inst='or  %o2, 0x140, %o1\t!! 0x11940 <_lib_version+8>'},

     {address='0x000107cc',func-name='main',offset='16',

     inst='sethi  %hi(0x11800), %o2'},

     {address='0x000107d0',func-name='main',offset='20',

     inst='or  %o2, 0x168, %o4\t!! 0x11968 <_lib_version+48>'}]

     (gdb)

   Disassemble the whole `main' function.  Line 32 is part of `main'.

     -data-disassemble -f basics.c -l 32 -- 0

     ^done,asm_insns=[

     {address='0x000107bc',func-name='main',offset='0',

     inst='save  %sp, -112, %sp'},

     {address='0x000107c0',func-name='main',offset='4',

     inst='mov   2, %o0'},

     {address='0x000107c4',func-name='main',offset='8',

     inst='sethi %hi(0x11800), %o2'},

     [...]

     {address='0x0001081c',func-name='main',offset='96',inst='ret '},

     {address='0x00010820',func-name='main',offset='100',inst='restore '}]

     (gdb)

   Disassemble 3 instructions from the start of `main':

     (gdb)

     -data-disassemble -f basics.c -l 32 -n 3 -- 0

     ^done,asm_insns=[

     {address='0x000107bc',func-name='main',offset='0',

     inst='save  %sp, -112, %sp'},

     {address='0x000107c0',func-name='main',offset='4',

     inst='mov  2, %o0'},

     {address='0x000107c4',func-name='main',offset='8',

     inst='sethi  %hi(0x11800), %o2'}]

     (gdb)

   Disassemble 3 instructions from the start of `main' in mixed mode:

     (gdb)

     -data-disassemble -f basics.c -l 32 -n 3 -- 1

     ^done,asm_insns=[

     src_and_asm_line={line='31',

     file='../../../src/gdb/testsuite/gdb.mi/basics.c',

     fullname='/absolute/path/to/src/gdb/testsuite/gdb.mi/basics.c',

     line_asm_insn=[{address='0x000107bc',

     func-name='main',offset='0',inst='save  %sp, -112, %sp'}]},

     src_and_asm_line={line='32',

     file='../../../src/gdb/testsuite/gdb.mi/basics.c',

     fullname='/absolute/path/to/src/gdb/testsuite/gdb.mi/basics.c',

     line_asm_insn=[{address='0x000107c0',

     func-name='main',offset='4',inst='mov  2, %o0'},

     {address='0x000107c4',func-name='main',offset='8',

     inst='sethi  %hi(0x11800), %o2'}]}]

     (gdb)

"

! !

!GDBMI_data_disassemble methodsFor:'accessing'!

operation

	^ 'data-disassemble'

! !

!GDBMI_data_disassemble methodsFor:'accessing-descriptors'!

resultDescription

    ^ (super resultDescription)

        define:#'asm_insns'

            as:Array of:GDBInstructionsAndSourceLine whenTaggedBy: 'src_and_asm_line'

                     or:GDBInstruction               whenTaggedBy: nil;

        yourself

    "

     Magritte::MADescriptionBuilder default flush.

     GDBMI_data_disassemble new resultDescription"

    "Created: / 22-06-2018 / 10:24:16 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 03-07-2018 / 17:17:49 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !