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| author | Dominik Vogt <vogt@linux.vnet.ibm.com> | 2013-12-19 12:00:43 +0000 |
|---|---|---|
| committer | Andreas Krebbel <krebbel@gcc.gnu.org> | 2013-12-19 12:00:43 +0000 |
| commit | d0de9e136f1dbe307e1d6ebb04b23131056cfa29 (patch) | |
| tree | 1db5b5b063976f159ca72b6bc57086c6c957a104 /gcc/doc/extend.texi | |
| parent | 2f62165dce49a99b72d729aae9f2d992a85c7765 (diff) | |
| download | gcc-d0de9e136f1dbe307e1d6ebb04b23131056cfa29.zip gcc-d0de9e136f1dbe307e1d6ebb04b23131056cfa29.tar.gz gcc-d0de9e136f1dbe307e1d6ebb04b23131056cfa29.tar.bz2 | |
s390.c (s390_hotpatch_trampoline_halfwords_default): New constant
2013-12-19 Dominik Vogt <vogt@linux.vnet.ibm.com>
Andreas Krebbel <Andreas.Krebbel@de.ibm.com>
* config/s390/s390.c (s390_hotpatch_trampoline_halfwords_default): New
constant
(s390_hotpatch_trampoline_halfwords_max): New constant
(s390_hotpatch_trampoline_halfwords): New static variable
(get_hotpatch_attribute): New function
(s390_handle_hotpatch_attribute): New function
(s390_attribute_table): New target specific attribute table to implement
the hotpatch attribute
(s390_option_override): Parse hotpatch options
(s390_function_num_hotpatch_trampoline_halfwords): New function
(s390_can_inline_p): Implement target hook to
suppress hotpatching for explicitly inlined functions
(s390_asm_output_function_label): Generate hotpatch prologue
(TARGET_ATTRIBUTE_TABLE): Define to implement target attribute table
(TARGET_CAN_INLINE_P): Define to implement target hook
* config/s390/s390.opt (mhotpatch): New options -mhotpatch, -mhotpatch=
* config/s390/s390-protos.h (s390_asm_output_function_label): Add
prototype
* config/s390/s390.h (ASM_OUTPUT_FUNCTION_LABEL): Target specific
function label generation for hotpatching
(FUNCTION_BOUNDARY): Align functions to eight bytes
* doc/extend.texi: Document hotpatch attribute
* doc/invoke.texi: Document -mhotpatch option
2013-12-19 Dominik Vogt <vogt@linux.vnet.ibm.com>
Andreas Krebbel <Andreas.Krebbel@de.ibm.com>
* gcc/testsuite/gcc.target/s390/hotpatch-1.c: New test
* gcc/testsuite/gcc.target/s390/hotpatch-2.c: New test
* gcc/testsuite/gcc.target/s390/hotpatch-3.c: New test
* gcc/testsuite/gcc.target/s390/hotpatch-4.c: New test
* gcc/testsuite/gcc.target/s390/hotpatch-5.c: New test
* gcc/testsuite/gcc.target/s390/hotpatch-6.c: New test
* gcc/testsuite/gcc.target/s390/hotpatch-7.c: New test
* gcc/testsuite/gcc.target/s390/hotpatch-8.c: New test
* gcc/testsuite/gcc.target/s390/hotpatch-9.c: New test
* gcc/testsuite/gcc.target/s390/hotpatch-10.c: New test
* gcc/testsuite/gcc.target/s390/hotpatch-11.c: New test
* gcc/testsuite/gcc.target/s390/hotpatch-12.c: New test
* gcc/testsuite/gcc.target/s390/hotpatch-compile-1.c: New test
* gcc/testsuite/gcc.target/s390/hotpatch-compile-2.c: New test
* gcc/testsuite/gcc.target/s390/hotpatch-compile-3.c: New test
* gcc/testsuite/gcc.target/s390/hotpatch-compile-4.c: New test
* gcc/testsuite/gcc.target/s390/hotpatch-compile-5.c: New test
* gcc/testsuite/gcc.target/s390/hotpatch-compile-6.c: New test
* gcc/testsuite/gcc.target/s390/hotpatch-compile-7.c: New test
Co-Authored-By: Andreas Krebbel <Andreas.Krebbel@de.ibm.com>
From-SVN: r206111
Diffstat (limited to 'gcc/doc/extend.texi')
| -rw-r--r-- | gcc/doc/extend.texi | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/gcc/doc/extend.texi b/gcc/doc/extend.texi index af258d7..2ce0098 100644 --- a/gcc/doc/extend.texi +++ b/gcc/doc/extend.texi @@ -3266,6 +3266,17 @@ this function attribute to make GCC generate the ``hot-patching'' function prologue used in Win32 API functions in Microsoft Windows XP Service Pack 2 and newer. +@item hotpatch [(@var{prologue-halfwords})] +@cindex @code{hotpatch} attribute + +On S/390 System z targets, you can use this function attribute to +make GCC generate a ``hot-patching'' function prologue. The +@code{hotpatch} has no effect on funtions that are explicitly +inline. If the @option{-mhotpatch} or @option{-mno-hotpatch} +command-line option is used at the same time, the @code{hotpatch} +attribute takes precedence. If an argument is given, the maximum +allowed value is 1000000. + @item naked @cindex function without a prologue/epilogue code Use this attribute on the ARM, AVR, MCORE, MSP430, NDS32, RL78, RX and SPU |