src/gdb ChangeLog s390-tdep.c

[jimb at sources dot redhat dot com]

CVSROOT:	/cvs/src
Module name:	src
Branch: 	gdb_6_0-branch
Changes by:	jimb@sourceware.org	2003-07-01 00:12:50

Modified files:
	gdb            : ChangeLog s390-tdep.c 

Log message:
	Patch from IBM (authors unspecified, probably Ulrich Weigand and
	Gerhard Tonn) for argument passing on the S/390 and S/390x:
	* s390-tdep.c (S390_STACK_FRAME_OVERHEAD): This is always space
	for 16 registers, and then 32 more bytes.
	(S390_STACK_PARAMETER_ALIGNMENT, S390_NUM_FP_PARAMETER_REGISTERS):
	New macros.
	(is_double_arg): The s390x doesn't handle DOUBLE_ARGS specially.
	Move up in the file, since it's now used by is_simple_arg.
	(is_simple_arg): Don't assume registers are four bytes long.
	Exclude all double arguments.  Extended floats are not simple
	args.
	(is_power_of_two): New function.
	(pass_by_copy_ref): Call is_power_of_two, and check that the
	length fits in a register, rather than listing all the acceptable
	sizes.  Extended floats are not passed by reference.
	(s390_push_arguments): Don't assume registers are four bytes long.
	Reserve an argument register to point to the buffer for structures
	returned by value.  Use S390_NUM_FP_PARAMETER_REGISTERS and
	S390_STACK_FRAME_OVERHEAD.

Patches:
http://sources.redhat.com/cgi-bin/cvsweb.cgi/src/gdb/ChangeLog.diff?cvsroot=src&only_with_tag=gdb_6_0-branch&r1=1.4439.2.25&r2=1.4439.2.26
http://sources.redhat.com/cgi-bin/cvsweb.cgi/src/gdb/s390-tdep.c.diff?cvsroot=src&only_with_tag=gdb_6_0-branch&r1=1.105&r2=1.105.2.1