diff options
Diffstat (limited to 'gdb/doc/gdb.texinfo')
| -rw-r--r-- | gdb/doc/gdb.texinfo | 28 |
1 files changed, 25 insertions, 3 deletions
diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo index fa583aa..dfd6ffa 100644 --- a/gdb/doc/gdb.texinfo +++ b/gdb/doc/gdb.texinfo @@ -6742,9 +6742,19 @@ program counter of the selected frame. A single argument to this command is a program counter value; @value{GDBN} dumps the function surrounding this value. When two arguments are given, they should be separated by a comma, possibly surrounded by whitespace. The -arguments specify a range of addresses (first inclusive, second exclusive) -to dump. In that case, the name of the function is also printed (since -there could be several functions in the given range). +arguments specify a range of addresses to dump, in one of two forms: + +@table @code +@item @var{start},@var{end} +the addresses from @var{start} (inclusive) to @var{end} (exclusive) +@item @var{start},+@var{length} +the addresses from @var{start} (inclusive) to +@code{@var{start}+@var{length}} (exclusive). +@end table + +@noindent +When 2 arguments are specified, the name of the function is also +printed (since there could be several functions in the given range). The argument(s) can be any expression yielding a numeric value, such as @samp{0x32c4}, @samp{&main+10} or @samp{$pc - 8}. @@ -6796,6 +6806,18 @@ Dump of assembler code for function main: End of assembler dump. @end smallexample +Here is another example showing raw instructions in hex for AMD x86-64, + +@smallexample +(gdb) disas /r 0x400281,+10 +Dump of assembler code from 0x400281 to 0x40028b: + 0x0000000000400281: 38 36 cmp %dh,(%rsi) + 0x0000000000400283: 2d 36 34 2e 73 sub $0x732e3436,%eax + 0x0000000000400288: 6f outsl %ds:(%rsi),(%dx) + 0x0000000000400289: 2e 32 00 xor %cs:(%rax),%al +End of assembler dump. +@end smallexample + Some architectures have more than one commonly-used set of instruction mnemonics or other syntax. |