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Improve libffi comments

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From-SVN: r162936
This commit is contained in:
Matthias Klose 2010-08-06 05:28:37 +00:00 committed by Anthony Green
parent 3ac097a580
commit 4736718a4e
3 changed files with 13 additions and 7 deletions
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5
libffi/ChangeLog
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@ -39,6 +39,11 @@
* libffi/src/x86/unix64.S (.eh_frame)
[HAVE_AS_X86_64_UNWIND_SECTION_TYPE]: Use @unwind section type.
2010-03-14 Matthias Klose <doko@ubuntu.com>
* src/x86/ffi64.c: Fix typo in comment.
* src/x86/ffi.c: Use /* ... */ comment style.
2010-02-24 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
* doc/libffi.texi (The Closure API): Fix typo.

8
libffi/src/x86/ffi.c
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@ -585,10 +585,10 @@ ffi_prep_raw_closure_loc (ffi_raw_closure* closure,
return FFI_BAD_ABI;
}
// we currently don't support certain kinds of arguments for raw
// closures. This should be implemented by a separate assembly language
// routine, since it would require argument processing, something we
// don't do now for performance.
/* we currently don't support certain kinds of arguments for raw
closures. This should be implemented by a separate assembly
language routine, since it would require argument processing,
something we don't do now for performance. */
for (i = cif->nargs-1; i >= 0; i--)
{

7
libffi/src/x86/ffi64.c
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@ -50,9 +50,10 @@ extern void ffi_call_unix64 (void *args, unsigned long bytes, unsigned flags,
gcc/config/i386/i386.c. Do *not* change one without the other. */
/* Register class used for passing given 64bit part of the argument.
These represent classes as documented by the PS ABI, with the exception
of SSESF, SSEDF classes, that are basically SSE class, just gcc will
use SF or DFmode move instead of DImode to avoid reformating penalties.
These represent classes as documented by the PS ABI, with the
exception of SSESF, SSEDF classes, that are basically SSE class,
just gcc will use SF or DFmode move instead of DImode to avoid
reformatting penalties.
Similary we play games with INTEGERSI_CLASS to use cheaper SImode moves
whenever possible (upper half does contain padding). */