Hi
my problem is this:
I have lots of functions (actually compiled Objective-C methods), that
look very similiar:
void *foo1( id self, unsigned int _cmd, struct { int a; void * b;}
*_param);
void *foo2( id self, unsigned int _cmd, struct { double a; void *
b;} *_param);
void *foo3( id self, unsigned int _cmd, struct { int a; int b; int
c; } *_param);
and so on. The first two parameters are always the same.
The actual method parameters are accessed indirectly through "_param".
So the functions may have looked like this in the Objective-C source code:
int foo1:(int) a :(void *) b;
void foo2:(double) a :(void *) b;
char *foo3:(int) a :(int) b :(int) c;
As the programmer passes "a", "b" and not "_param", it would be nice to
get the debugger to print "_param->a", if the user enters "p a". gdb can
already do this expansion for "this" or "self". As it's Objective-C, the
"this" for the debugger is taken and it's "self". The user doesn't have
to type "p self->_ivar" but can use "p _ivar" to access instance
variables. That's nice, but doesn't extend to "_param".
I am looking for the least effort route to support something like this
for "_param" as well, in gdb. What would be really great, would be to
also show the struct fields in the stack trace instead of "_param".
Ciao
Nat!
P.S.
Getting the compiler to output some fake dwarf "DW_TAG_formal_parameter"
for each struct field with a computed dwarf expression, is maybe the
proper way it could be done. But that's not least effort for me by a
long shot.