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Doc C language guidelines.

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Andrew Cagney 1997-09-03 07:34:59 +00:00
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sim/README-HACKING
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@ -162,3 +162,27 @@ For a list of all of them, see common/tconfig.in.
It contains them all, commented out.
The intent is that a new port can just copy this file and
define the ones it needs.
C Language Assumptions
======================
The programmer may assume that the simulator is being built using an
ANSI C compiler that supports a 64 bit data type. Consequently:
o prototypes can be used (although using
PARAMS() and K&R declarations wouldn't
go astray).
o If sim-types.h is included, the two
types signed64 and unsigned64 are
available.
o The type `unsigned' is valid.
However, the user should not assume:
o `<number>LL' is acceptable. Microsoft-C
doesn't reconize it.
o `long long' or `_int64' provides a 64 bit
integer data type.