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extend.texi (Named Address Spaces): Document the M32C named address space.

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* doc/extend.texi (Named Address Spaces): Document the M32C named
address space.

From-SVN: r165873
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DJ Delorie 2010-10-22 18:26:59 -04:00 committed by DJ Delorie
parent 5fd5d7136e
commit b3f85ff2b7
2 changed files with 9 additions and 1 deletions
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gcc/ChangeLog
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@ -1,5 +1,8 @@
2010-10-22 DJ Delorie <dj@redhat.com>
* doc/extend.texi (Named Address Spaces): Document the M32C named
address space.
* config/m32c/m32c-pragma.c (m32c_register_pragmas): Register the
__far address space.
* config/m32c/m32c.h (ADDR_SPACE_FAR): New. Add support for

7
gcc/doc/extend.texi
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@ -1220,7 +1220,7 @@ As an extension, the GNU C compiler supports named address spaces as
defined in the N1275 draft of ISO/IEC DTR 18037. Support for named
address spaces in GCC will evolve as the draft technical report changes.
Calling conventions for any target might also change. At present, only
the SPU target supports other address spaces. On the SPU target, for
the SPU and M32C targets support other address spaces. On the SPU target, for
example, variables may be declared as belonging to another address space
by qualifying the type with the @code{__ea} address space identifier:
@ -1237,6 +1237,11 @@ The @code{__ea} identifier may be used exactly like any other C type
qualifier (e.g., @code{const} or @code{volatile}). See the N1275
document for more details.
On the M32C target, with the R8C and M16C cpu variants, variables
qualified with @code{__far} are accessed using 32-bit addresses in
order to access memory beyond the first 64k bytes. If @code{__far} is
used with the M32CM or M32C cpu variants, it has no effect.
@node Zero Length
@section Arrays of Length Zero
@cindex arrays of length zero