Intel i960 User Manual page 116

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3-40
i960 Processor Compiler User's Guide
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The Release 3.0 compiler, when used to compile for any i960
processor, returns
long double
and global registers. When Release 3.0 is used to compile for a
g2
processor without a floating-point unit (e.g., the KA, SA, CA, or CF
processor), the compiler generates calls to the accelerated floating-
point library ("libh"). (Release 2.0 generated calls to the FPAL
floating-point-arithmetic library, but FPAL is no longer supported.)
You must recompile any KA, SA, CA, or CF module that was
compiled with ic960 R2.0 floating-point operations.
Big-endian Argument (be): If you select
that the memory system of the entire program is in big-endian format.
Only the i960 Cx, Hx, and Jx processors support big- and little-endian
format. Do not use this argument with other i960 architectures.
The compiler automatically passes the
the assembler or linker if they are to be run.
Big Compression Assisted Virtual Execution (CAVE): If you
select , the compiler generates special CAVE entries for all functions
cave
in the compilation unit. This prepares the functions for link-time
compression. The CAVE entries resemble the following:
.section .text
_foo:
lda L1,reg
call __dispatcher
ret
.section cave
.word L2-L1,0
L1:
function body
L2:
At runtime, the dispatcher decompresses the function bodies and transfers
control to them. This mechanism saves runtime memory. (See the
discussion of
#pragma cave
floating-point numbers in the
, you inform the compiler
be
(Generate big-endian) option to
G
in Chapter 7 for more information.)
, ,
g0 g1