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| author | Matthias Klose <doko@ubuntu.com> | 2010-08-06 05:28:37 +0000 |
|---|---|---|
| committer | Anthony Green <green@gcc.gnu.org> | 2010-08-06 05:28:37 +0000 |
| commit | 4736718a4eaa086ada51b54a5cfb9fff059c6d9f (patch) | |
| tree | 8cff1d61a1410afc3f31b95b7853350890c04747 /libffi/src/x86 | |
| parent | 3ac097a580e0a77d8b15486361d473ce06edaeba (diff) | |
| download | gcc-4736718a4eaa086ada51b54a5cfb9fff059c6d9f.tar.gz | |
Improve libffi comments
From-SVN: r162936
Diffstat (limited to 'libffi/src/x86')
| -rw-r--r-- | libffi/src/x86/ffi.c | 8 | ||||
| -rw-r--r-- | libffi/src/x86/ffi64.c | 7 |
2 files changed, 8 insertions, 7 deletions
diff --git a/libffi/src/x86/ffi.c b/libffi/src/x86/ffi.c index d99528b11c7..80496532a30 100644 --- a/libffi/src/x86/ffi.c +++ b/libffi/src/x86/ffi.c @@ -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--) { diff --git a/libffi/src/x86/ffi64.c b/libffi/src/x86/ffi64.c index 51ada0e879f..07a2627b1f2 100644 --- a/libffi/src/x86/ffi64.c +++ b/libffi/src/x86/ffi64.c @@ -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). */ |