[svn ci] Better gdb support (r11581)

A debug session snippet:

Breakpoint 1, Parrot_invokecc_p (cur_opcode=0x84c7540, 
interpreter=0x82a6008) at core.ops:411
411       PMC * p = $1;
(gdb) help user-defined
User-defined commands.
The commands in this class are those defined by the user.
Use the "define" command to define a command.

List of commands:

pi -- Pi n
ps -- Ps n
(gdb) help pi
pi n  ... print contents of interpreter register In
(a variable 'interpreter' must be in context)
(gdb) ps 0
S0=0xbffff2f1 "11"
(gdb) ps 1
S1=0x8245113 "no such reg"
(gdb) pi 0
I0=0
(gdb) pi 1
I1=3

• [svn ci] Better gdb support (r11581) by Leopold Toetsch
• Re: [svn ci] Better gdb support (r11581) by Leopold Toetsch