libobjc2

Author	SHA1	Message	Date
David Chisnall	b1964451e1	Fix the AArch64 small object class lookup. This was generating a relocation that didn't do the right thing and didn't raise linker errors. Now it is using GOT-relative addressing. In combination with the last two commits, this now makes all of the objc_msgSend tests pass on AArch64. Fixes #105	6 years ago
David Chisnall	c1a3d8f470	Fix stack resetting for objc_msgSend on ARM. If we called into C to find the IMP (e.g. for forwarding), we were then reloading all of the arguments but failing to adjust the stack pointer by the correct amount, leaving it around 192 bytes offset from its correct location. This, unsurprisingly, led to crashing and other exciting behaviour.	6 years ago
David Chisnall	60a657fbc6	Fix CFA calculation in AArch64 objc_msgSend. Prior to this, throwing an exception from a +initialize method would leave the stack pointer 16 bytes offset from its correct location.	6 years ago
David Chisnall	c7c193e4c7	Use the correct compare instruction.	10 years ago
David Chisnall	b952a21abe	Add objc_msgSend for AArch64. An interesting feature of the AArch64 ABI simplifies this code relative to other platforms. AArch64 reserves an extra register (x8) for the address of struct returns, giving the	10 years ago