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ruby: add memory_check / memory_patch native methods

develop
jj 2012-08-23 18:44:03 +02:00
parent 5b0f37276f
commit c339c7085a
1 changed files with 42 additions and 0 deletions
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42
plugins/ruby/ruby.cpp
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@ -4,6 +4,7 @@
#include "Export.h"
#include "PluginManager.h"
#include "VersionInfo.h"
#include "MemAccess.h"
#include "DataDefs.h"
#include "df/global_objects.h"
@ -597,6 +598,45 @@ static VALUE rb_dfmemory_write_float(VALUE self, VALUE addr, VALUE val)
return Qtrue;
}
// return memory permissions at address (eg "rx", nil if unmapped)
static VALUE rb_dfmemory_check(VALUE self, VALUE addr)
{
void *ptr = (void*)rb_num2ulong(addr);
std::vector<t_memrange> ranges;
Core::getInstance().p->getMemRanges(ranges);
unsigned i = 0;
while (i < ranges.size() && ranges[i].end <= ptr)
i++;
if (i >= ranges.size() || ranges[i].start > ptr || !ranges[i].valid)
return Qnil;
std::string perm = "";
if (ranges[i].read)
perm += "r";
if (ranges[i].write)
perm += "w";
if (ranges[i].execute)
perm += "x";
if (ranges[i].shared)
perm += "s";
return rb_str_new(perm.c_str(), perm.length());
}
// memory write (tmp override page permissions, eg patch code)
static VALUE rb_dfmemory_patch(VALUE self, VALUE addr, VALUE raw)
{
int strlen = FIX2INT(rb_funcall(raw, rb_intern("length"), 0));
bool ret;
ret = Core::getInstance().p->patchMemory((void*)rb_num2ulong(addr),
rb_string_value_ptr(&raw), strlen);
return ret ? Qtrue : Qfalse;
}
// stl::string
static VALUE rb_dfmemory_stlstring_new(VALUE self)
@ -875,6 +915,8 @@ static void ruby_bind_dfhack(void) {
rb_define_singleton_method(rb_cDFHack, "memory_write_int16", RUBY_METHOD_FUNC(rb_dfmemory_write_int16), 2);
rb_define_singleton_method(rb_cDFHack, "memory_write_int32", RUBY_METHOD_FUNC(rb_dfmemory_write_int32), 2);
rb_define_singleton_method(rb_cDFHack, "memory_write_float", RUBY_METHOD_FUNC(rb_dfmemory_write_float), 2);
rb_define_singleton_method(rb_cDFHack, "memory_check", RUBY_METHOD_FUNC(rb_dfmemory_check), 1);
rb_define_singleton_method(rb_cDFHack, "memory_patch", RUBY_METHOD_FUNC(rb_dfmemory_patch), 2);
rb_define_singleton_method(rb_cDFHack, "memory_stlstring_new", RUBY_METHOD_FUNC(rb_dfmemory_stlstring_new), 0);
rb_define_singleton_method(rb_cDFHack, "memory_stlstring_delete", RUBY_METHOD_FUNC(rb_dfmemory_stlstring_delete), 1);