Sergey Bugaev 4a373ea7d6 mach: Define MACHINE_THREAD_STATE_SETUP_CALL ... The existing two macros, MACHINE_THREAD_STATE_SET_PC and MACHINE_THREAD_STATE_SET_SP, can be used to set program counter and the stack pointer registers in a machine-specific thread state structure. Useful as it is, this may not be enough to set up the thread to make a function call, because the machine-specific ABI may impose additional requirements. In particular, x86_64 ABI requires that upon function entry, the stack pointer is 8 less than 16-byte aligned (sp & 15 == 8). To deal with this, introduce a new macro, MACHINE_THREAD_STATE_SETUP_CALL (), which sets both stack and instruction pointers, and also applies any machine-specific requirements to make a valid function call. The default implementation simply forwards to MACHINE_THREAD_STATE_SET_PC and MACHINE_THREAD_STATE_SET_SP, but on x86_64 we additionally align the stack pointer. Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230517191436.73636-3-bugaevc@gmail.com>		2023-05-17 22:52:39 +02:00
..
bits/mach
machine-lock.h
sysdep.h	Move RETURN_TO to x86/sysdep.h and implement x86_64 version.	2023-02-05 12:36:38 +01:00
thread_state.h	mach: Define MACHINE_THREAD_STATE_SETUP_CALL	2023-05-17 22:52:39 +02:00