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ruby: allow vmethod call with 6 args, use direct fptr

develop
jj 2012-08-31 15:51:22 +02:00
parent e6b2cb73af
commit 54780cac3f
3 changed files with 25 additions and 21 deletions
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2
plugins/ruby/README
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@ -177,7 +177,7 @@ Symbol. This works for array indexes too.
ex: df.unit_find(:selected).status.labors[:HAUL_FOOD] = true
df.map_tile_at(df.cursor).designation.liquid_type = :Water
Virtual method calls are supported for C++ objects, with a maximum of 4
Virtual method calls are supported for C++ objects, with a maximum of 6
arguments. Arguments / return value are interpreted as Compound/Enums as
specified in the vmethod definition in the xmls.

8
plugins/ruby/ruby-autogen-defs.rb
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@ -795,8 +795,12 @@ module DFHack
v if v != 0
end
def self.vmethod_call(obj, voff, a0=0, a1=0, a2=0, a3=0, a4=0)
vmethod_do_call(obj._memaddr, voff, vmethod_arg(a0), vmethod_arg(a1), vmethod_arg(a2), vmethod_arg(a3))
def self.vmethod_call(obj, voff, a0=0, a1=0, a2=0, a3=0, a4=0, a5=0)
this = obj._memaddr
vt = df.get_vtable_ptr(this)
fptr = df.memory_read_int32(vt + voff) & 0xffffffff
vmethod_do_call(this, fptr, vmethod_arg(a0), vmethod_arg(a1), vmethod_arg(a2),
vmethod_arg(a3), vmethod_arg(a4), vmethod_arg(a5))
end
def self.vmethod_arg(arg)

30
plugins/ruby/ruby.cpp
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@ -838,8 +838,8 @@ static VALUE rb_dfmemory_bitarray_set(VALUE self, VALUE addr, VALUE idx, VALUE v
/* call an arbitrary object virtual method */
#ifdef WIN32
__declspec(naked) static int raw_vcall(char **that, unsigned long voff, unsigned long a0,
unsigned long a1, unsigned long a2, unsigned long a3)
__declspec(naked) static int raw_vcall(void *that, void *fptr, unsigned long a0,
unsigned long a1, unsigned long a2, unsigned long a3, unsigned long a4, unsigned long a5)
{
// __thiscall requires that the callee cleans up the stack
// here we dont know how many arguments it will take, so
@ -848,6 +848,8 @@ __declspec(naked) static int raw_vcall(char **that, unsigned long voff, unsigned
push ebp
mov ebp, esp
push a5
push a4
push a3
push a2
push a1
@ -855,9 +857,7 @@ __declspec(naked) static int raw_vcall(char **that, unsigned long voff, unsigned
mov ecx, that
mov eax, [ecx]
add eax, voff
call [eax]
call fptr
mov esp, ebp
pop ebp
@ -865,25 +865,25 @@ __declspec(naked) static int raw_vcall(char **that, unsigned long voff, unsigned
}
}
#else
static int raw_vcall(char **that, unsigned long voff, unsigned long a0,
unsigned long a1, unsigned long a2, unsigned long a3)
static int raw_vcall(void *that, void *fptr, unsigned long a0,
unsigned long a1, unsigned long a2, unsigned long a3, unsigned long a4, unsigned long a5)
{
int (*fptr)(char **me, int, int, int, int);
fptr = (decltype(fptr))*(void**)(*that + voff);
return fptr(that, a0, a1, a2, a3);
int (*t_fptr)(void *me, int, int, int, int, int, int);
t_fptr = (decltype(t_fptr))fptr;
return t_fptr(that, a0, a1, a2, a3, a4, a5);
}
#endif
// call an arbitrary vmethod, convert args/ret to native values for raw_vcall
static VALUE rb_dfvcall(VALUE self, VALUE cppobj, VALUE cppvoff, VALUE a0, VALUE a1, VALUE a2, VALUE a3)
static VALUE rb_dfvcall(VALUE self, VALUE cppobj, VALUE fptr, VALUE a0, VALUE a1, VALUE a2, VALUE a3, VALUE a4, VALUE a5)
{
return rb_int2inum(raw_vcall((char**)rb_num2ulong(cppobj), rb_num2ulong(cppvoff),
return rb_int2inum(raw_vcall((void*)rb_num2ulong(cppobj), (void*)rb_num2ulong(fptr),
rb_num2ulong(a0), rb_num2ulong(a1),
rb_num2ulong(a2), rb_num2ulong(a3)));
rb_num2ulong(a2), rb_num2ulong(a3),
rb_num2ulong(a4), rb_num2ulong(a5)));
}
// define module DFHack and its methods
static void ruby_bind_dfhack(void) {
rb_cDFHack = rb_define_module("DFHack");
@ -902,7 +902,7 @@ static void ruby_bind_dfhack(void) {
rb_define_singleton_method(rb_cDFHack, "print_err", RUBY_METHOD_FUNC(rb_dfprint_err), 1);
rb_define_singleton_method(rb_cDFHack, "malloc", RUBY_METHOD_FUNC(rb_dfmalloc), 1);
rb_define_singleton_method(rb_cDFHack, "free", RUBY_METHOD_FUNC(rb_dffree), 1);
rb_define_singleton_method(rb_cDFHack, "vmethod_do_call", RUBY_METHOD_FUNC(rb_dfvcall), 6);
rb_define_singleton_method(rb_cDFHack, "vmethod_do_call", RUBY_METHOD_FUNC(rb_dfvcall), 8);
rb_define_singleton_method(rb_cDFHack, "memory_read", RUBY_METHOD_FUNC(rb_dfmemory_read), 2);
rb_define_singleton_method(rb_cDFHack, "memory_read_int8", RUBY_METHOD_FUNC(rb_dfmemory_read_int8), 1);