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Diffstat (limited to 'gcc/ChangeLog')
| -rw-r--r-- | gcc/ChangeLog | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 68dd7e9f8b4..1970bd74cdf 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,63 @@ +2010-09-27 Ian Lance Taylor <iant@google.com> + + * common.opt (fsplit-stack): New option. + * opts.c (decode_options): Set flag_split_stack to final value. + * target.def (supports_split_stack): New hook. + * gcc.c (STACK_SPLIT_SPEC): Define. + (LINK_COMMAND_SPEC): Use STACK_SPLIT_SPEC. + * doc/invoke.texi (Option Summary): Mention -fsplit-stack. + (Code Gen Options): Document -fsplit-stack. + * doc/extend.texi (Function Attributes): Mention no_split_stack. + (Function Attributes): Document no_split_stack. + * doc/tm.texi.in (Stack Smashing Protection): Add @hook + TARGET_SUPPORTS_SPLIT_STACK. + * doc/tm.texi: Rebuild. + * function.c (thread_prologue_and_epilogue_insns): If + flag_split_stack, add split stack prologue. + * explow.c (allocate_dynamic_stack_space): Support -fsplit-stack. + * varasm.c (saw_no_split_stack): New static variable. + (assemble_start_function): Set saw_no_split_stack if the function + has the no_split_stack attribute. + (file_end_indicate_split_stack): New function. + * output.h (file_end_indicate_split_stack): Declare. + * libgcc-std.ver (GCC_4.6.0): Add -fsplit-stack support variables + and function. + * doc/libgcc.texi (Miscellaneous routines): Document -fsplit-stack + routines. + * config/i386/i386.c (ix86_option_override_internal): Don't set + expand_builtin_va_start to NULL if -fsplit-stack. + (ix86_function_regparm): Reduce local regparm by 1 for 32-bit + -fsplit-stack. + (ix86_va_start): If -fsplit-stack, get overflow pointer from + scratch register set by prologue. + (ix86_code_end): If -fsplit-stack, call + file_end_indicate_split_stack. + (ix86_supports_split_stack): New static function. + (SPLIT_STACK_AVAILABLE): Define. + (split_stack_prologue_scratch_regno): New static function. + (split_stack_fn): New static variable. + (ix86_expand_split_stack_prologue): New function. + (ix86_live_on_entry): New static function. + (ix86_legitimate_address_p): Handle UNSPEC_STACK_CHECK. + (output_pic_addr_const): Likewise. + (i386_asm_output_addr_const_extra): Likewise. + (ix86_expand_call): Change return type to rtx. Return the new + call instruction. + (TARGET_SUPPORTS_SPLIT_STACK): Define. + (TARGET_EXTRA_LIVE_ON_ENTRY): Define. + * config/i386/i386.md (UNSPEC_STACK_CHECK): Define. + (split_stack_prologue, split_stack_return): New insns. + (split_stack_space_check): New insn. + * config/i386/i386.h (struct machine_function): Add + split_stack_varargs_pointer field. + * config/i386/linux.h (TARGET_CAN_SPLIT_STACK): Define. + (TARGET_THREAD_SPLIT_STACK_OFFSET): Define. + * config/i386/linux64.h (TARGET_CAN_SPLIT_STACK): Define. + (TARGET_THREAD_SPLIT_STACK_OFFSET): Define. + * config/i386/i386-protos.h (ix86_expand_split_stack_prologue): + Declare. + (ix86_expand_call): Update declaration. + 2010-09-27 Nicola Pero <nicola.pero@meta-innovation.com> * doc/objc.texi (Type encoding): Added the new 'long double' (D) |