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| author | Marcin Kościelnicki <koriakin@0x04.net> | 2016-02-15 10:20:18 +0000 |
|---|---|---|
| committer | Andreas Krebbel <krebbel@gcc.gnu.org> | 2016-02-15 10:20:18 +0000 |
| commit | 4cb4721f9371ac318e33cbed99a66a029353e10a (patch) | |
| tree | 633620a331dce10653b1b110b0531b75f5ee2376 /libgcc/config/s390/t-stack-s390 | |
| parent | 17a3b967929eb6d344ae73bff4f28efc88c35ca9 (diff) | |
| download | gcc-4cb4721f9371ac318e33cbed99a66a029353e10a.tar.gz | |
S/390: Add -fsplit-stack support
libgcc/ChangeLog:
* config.host: Use t-stack and t-stack-s390 for s390*-*-linux.
* config/s390/morestack.S: New file.
* config/s390/t-stack-s390: New file.
* generic-morestack.c (__splitstack_find): Add s390-specific code.
gcc/ChangeLog:
* common/config/s390/s390-common.c (s390_supports_split_stack):
New function.
(TARGET_SUPPORTS_SPLIT_STACK): New macro.
* config/s390/s390-protos.h: Add s390_expand_split_stack_prologue.
* config/s390/s390.c (struct machine_function): New field
split_stack_varargs_pointer.
(s390_register_info): Mark r12 as clobbered if it'll be used as temp
in s390_emit_prologue.
(s390_emit_prologue): Use r12 as temp if r1 is taken by split-stack
vararg pointer.
(morestack_ref): New global.
(SPLIT_STACK_AVAILABLE): New macro.
(s390_expand_split_stack_prologue): New function.
(s390_live_on_entry): New function.
(s390_va_start): Use split-stack vararg pointer if appropriate.
(s390_asm_file_end): Emit the split-stack note sections.
(TARGET_EXTRA_LIVE_ON_ENTRY): New macro.
* config/s390/s390.md (UNSPEC_STACK_CHECK): New unspec.
(UNSPECV_SPLIT_STACK_CALL): New unspec.
(UNSPECV_SPLIT_STACK_DATA): New unspec.
(split_stack_prologue): New expand.
(split_stack_space_check): New expand.
(split_stack_data): New insn.
(split_stack_call): New expand.
(split_stack_call_*): New insn.
(split_stack_cond_call): New expand.
(split_stack_cond_call_*): New insn.
From-SVN: r233421
Diffstat (limited to 'libgcc/config/s390/t-stack-s390')
| -rw-r--r-- | libgcc/config/s390/t-stack-s390 | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/libgcc/config/s390/t-stack-s390 b/libgcc/config/s390/t-stack-s390 new file mode 100644 index 00000000000..4c959b036de --- /dev/null +++ b/libgcc/config/s390/t-stack-s390 @@ -0,0 +1,2 @@ +# Makefile fragment to support -fsplit-stack for s390. +LIB2ADD_ST += $(srcdir)/config/s390/morestack.S |