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| author | Ajit Agarwal <ajitkum@xilinx.com> | 2014-05-17 15:12:38 +0000 |
|---|---|---|
| committer | Michael Eager <eager@gcc.gnu.org> | 2014-05-17 15:12:38 +0000 |
| commit | 86498dbaae86f711a98ea020441562de84946879 (patch) | |
| tree | b594c0ab7cce86755578cc61bfda61439424797a /gcc/doc | |
| parent | a0eaa08cebd801a6a1d340dfd71b0183c510f599 (diff) | |
| download | gcc-86498dbaae86f711a98ea020441562de84946879.zip gcc-86498dbaae86f711a98ea020441562de84946879.tar.gz gcc-86498dbaae86f711a98ea020441562de84946879.tar.bz2 | |
ChangeLog:
2014-05-17 Ajit Agarwal <ajitkum@xilinx.com>
* config/microblaze/microblaze.c
(break_handler): New Declaration.
(microblaze_break_function_p,microblaze_is_break_handler) : New functions.
(compute_frame_size): use of microblaze_break_function_p. Add the test of break_handler.
(microblaze_function_prologue) : Add the test of variable
break_handler. Check the fnname by BREAK_HANDLER_NAME.
(microblaze_function_epilogue) : Add the test of break_handler.
(microblaze_globalize_label) : Add the test of break_handler. Check the
name by BREAK_HANDLER_NAME.
* config/microblaze/microblaze.h (BREAK_HANDLER_NAME) : New macro
* config/microblaze/microblaze.md :
(*<optab>,<optab>_internal): Add microblaze_is_break_handler () test.
(call_internal1,call_value_intern) : Use of microblaze_break_function_p.
Use of SYMBOL_REF_DECL.
* config/microblaze/microblaze-protos.h
(microblaze_break_function_p,microblaze_is_break_handler) : New Declaration.
* testsuite/gcc.target/microblaze/others/break_handler.c : New.
* doc/extend.texi( MicroBlaze break_handler Functions): Document new
MicroBlaze break_handler functions.
From-SVN: r210559
Diffstat (limited to 'gcc/doc')
| -rw-r--r-- | gcc/doc/extend.texi | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/gcc/doc/extend.texi b/gcc/doc/extend.texi index bd2c829..31a48dd 100644 --- a/gcc/doc/extend.texi +++ b/gcc/doc/extend.texi @@ -3772,6 +3772,18 @@ registers) are saved in the function prologue. If the function is a leaf function, only volatiles used by the function are saved. A normal function return is generated instead of a return from interrupt. +@item break_handler +@cindex break handler functions +Use this attribute on the MicroBlaze ports to indicate that +the specified function is an break handler. The compiler generates function +entry and exit sequences suitable for use in an break handler when this +attribute is present. The return from @code{break_handler} is done through +the @code{rtbd} instead of @code{rtsd}. + +@smallexample +void f () __attribute__ ((break_handler)); +@end smallexample + @item section ("@var{section-name}") @cindex @code{section} function attribute Normally, the compiler places the code it generates in the @code{text} section. |