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(FUNCTION_ARG): Stack element of PARALLEL must come first

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From-SVN: r26879
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Nick Clifton 1999-05-11 06:27:30 +00:00 committed by Nick Clifton
parent ef16b5e5dd
commit f797c10bb0
2 changed files with 15 additions and 7 deletions
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gcc/ChangeLog
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@ -1,3 +1,8 @@
Mon May 10 13:51:24 1999 Nick Clifton <nickc@cygnus.com>
* tm.texi (FUNCTION_ARG): Stack element of PARALLEL must come
first.
Tue May 11 01:32:01 1999 Jeffrey A Law (law@cygnus.com)
* fixinc/inclhack.def (sun_auth_proto): Apply to all targets.

17
gcc/tm.texi
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@ -2787,13 +2787,16 @@ The value of the expression can also be a @code{parallel} RTX. This is
used when an argument is passed in multiple locations. The mode of the
of the @code{parallel} should be the mode of the entire argument. The
@code{parallel} holds any number of @code{expr_list} pairs; each one
describes where part of the argument is passed. In each @code{expr_list},
the first operand can be either a @code{reg} RTX for the hard register
in which to pass this part of the argument, or zero to pass the argument
on the stack. If this operand is a @code{reg}, then the mode indicates
how large this part of the argument is. The second operand of the
@code{expr_list} is a @code{const_int} which gives the offset in bytes
into the entire argument where this part starts.
describes where part of the argument is passed. In each
@code{expr_list} the first operand must be a @code{reg} RTX for the hard
register in which to pass this part of the argument, and the mode of the
register RTX indicates how large this part of the argument is. The
second operand of the @code{expr_list} is a @code{const_int} which gives
the offset in bytes into the entire argument of where this part starts.
As a special exception the first @code{expr_list} in the @code{parallel}
RTX may have a first operand of zero. This indicates that the bytes
starting from the second operand of that @code{expr_list} are stored on
the stack and not held in a register.
@cindex @file{stdarg.h} and register arguments
The usual way to make the ANSI library @file{stdarg.h} work on a machine