Re: GDB 4.17 Patch for stack aligned i386 code

[John Wehle <john@feith.com>]

Just curious what the status is of this patch.  Anything I need
to do at this point?

Wed Jan 20 22:14:03 EST 1999  John Wehle  (john@feith.com)

	* tm-i386.h (FRAME_CHAIN): Call i386_frame_chain for
	signal handler callers.
	(EXTRA_FRAME_INFO): Define stack_mask.
	(FRAME_ARGS_ADDRESS, FRAME_LOCALS_ADDRESS): Use it.
	* i386-tdep.c (i386_get_frame_setup): Set it.
	(i386_frame_find_saved_regs): Use it.
	(i386_init_extra_frame_info): Initialize it.
	(i386_frame_find_saved_regs): Don't accidently zero
	fi->fsr.regs[FP_REGNUM].
	(i386_sigcontext_addr): New function.
	(i386v4_sigtramp_saved_pc): Use it.
	(i386_analyze_prologue): Use it.
	(i386_analyze_prologue): Handle dummy frames.
	(i386_analyze_prologue): If the start of a function can't
	be located than assume the frame is in the frame pointer.
	(i386_frame_chain): If the caller's prologue can't be
	analyze then return the current frame as the frame.
	(i386_frame_chain): Check the current frame for FP_REGNUM.
	(i386_frame_chain): Handle chaining back from a signal
	handler caller to a function which uses the stack pointer
	for the frame pointer.
	(i386_frame_chain): Include the stack space occupied by
	FP_REGNUM when caculating the caller's frame.
	(i386_pop_frame): Don't bother explicitly restoring PC_REGNUM,
	it is restored by the for loop.
	* tm-i386bsd.h (SIGCONTEXT_FP_OFFSET,
	SIGCONTEXT_SP_OFFSET): Define.
	* tm-i386sol2.h: Likewise.
	* tm-i386v4.h: Likewise.

-- John
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