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Diffstat (limited to 'gcc/doc/extend.texi')
| -rw-r--r-- | gcc/doc/extend.texi | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/gcc/doc/extend.texi b/gcc/doc/extend.texi index 7e13795..dc02b62 100644 --- a/gcc/doc/extend.texi +++ b/gcc/doc/extend.texi @@ -6044,6 +6044,7 @@ here in tabular form. * Argument Types:: * Directly-mapped Integer Functions:: * Directly-mapped Media Functions:: +* Raw read/write Functions:: * Other Built-in Functions:: @end menu @@ -6398,6 +6399,27 @@ The functions listed below map directly to FR-V M-type instructions. @tab @code{MXOR @var{a},@var{b},@var{c}} @end multitable +@node Raw read/write Functions +@subsubsection Raw read/write Functions + +This sections describes built-in functions related to read and write +instructions to access memory. These functions generate +@code{membar} instructions to flush the I/O load and stores where +appropriate, as described in Fujitsu's manual described above. + +@table @code + +@item unsigned char __builtin_read8 (void *@var{data}) +@item unsigned short __builtin_read16 (void *@var{data}) +@item unsigned long __builtin_read32 (void *@var{data}) +@item unsigned long long __builtin_read64 (void *@var{data}) + +@item void __builtin_write8 (void *@var{data}, unsigned char @var{datum}) +@item void __builtin_write16 (void *@var{data}, unsigned short @var{datum}) +@item void __builtin_write32 (void *@var{data}, unsigned long @var{datum}) +@item void __builtin_write64 (void *@var{data}, unsigned long long @var{datum}) +@end table + @node Other Built-in Functions @subsubsection Other Built-in Functions |