https://forum.dlang.org/thread/ddckhvcxlyuvuiyaz...@forum.dlang.org is similar
to what I want to do, but the code by Adam cannot be used when using Better C
(I assume slicing isn't supported).
I have the following code:
environment.d
public __gshared header* GPT_header;
public __gshared partition_entry[128] GPT_entries;
main.d
GPT_header = cast(header*)0x00007e00;
*(GPT_entries).ptr = *(cast(partition_entry*)0x00008000);
Disassembled, the code from main.d looks like this:
mov ds:_D4boot11environment10GPT_headerPSQBg3gpt6header, 7E00h
mov esi, 8000h
mov edi, offset
_D4boot11environment11GPT_entriesG128SQBk3gpt15partition_entry
mov ecx, 20h
rep movsd
So GPT_header points to 0x7e00 as desired, but for GPT_entries it
copies the first array element to a different location and makes
it point to that location instead of 0x8000.
I should point out that I only have a vague idea of what I'm
doing, I tried things until it compiled and worked (at first
glance). If there are any docs that properly explain the casting
of pointers, I'd appreciate the links.
