[PATCH]: Implementation for SYSV/MS ABI attributes in i386 may before stage 3

[Kai Tietz]

Hi,

Ok, here is the patch for abi dependent calling convention controlled by 
attributes. The documentation I will deliver in stage 3.
This patch file is strictly related to the prior patch I sent '[PING^3 
PATCH]: Preparations for SYSV/MS ABI attributes in backend'.

Is this patch OK ?

ChangeLog /gcc/gcc


        * gcc/config/i386/cygming.h: (TARGET_64BIT_MS_ABI): Redefine using
        calling abi attributes.
        (STACK_BOUNDARY): Likewise.
        (DEFAULT_ABI): New macro specifying default abi to use.
        (REG_PARM_STACK_SPACE, OUTGOING_REG_PARM_STACK_SPACE): Removed.
        * gcc/config/i386/i386-protos.h: (ix86_return_in_memory): Add 
fntype argument.
        (ix86_cfun_abi, ix86_function_abi, ix86_function_type_abi): New.
        * gcc/config/i386/i386.c: (X86_64_VARARGS_SIZE): Make it use SYSV 
constants.
        May a todo, defining abi related constants in i386.h for better 
reading.
        (ix86_cfun_abi, ix86_function_abi, ix86_function_type_abi,
        ix86_reg_parm_stack_space): New.
        (TARGET_64BIT_MS_ABI): Replace them by using default or function 
specific
        calling abi definitions.
        * gcc/config/i386/i386.h: (TARGET_64BIT_MS_ABI): Redefine unsigned
        calling abi attributes.
        (STACK_BOUNDARY): Likewise.
        (REG_PARM_STACK_SPACE): Likewise.
        (OVERRIDE_ABI_FORMAT): New.
        (SYSV_ABI, MS_ABI): New enum constants.
        (DEFAULT_ABI): New.
        (TARGET_64BIT_MS_ABI): Replace them by using default or function 
specific
        calling abi definitions.
        (RETURN_IN_MEMORY): Add new fntype argument.
        (ix86_args): New member call_abi.
        (machine_function): New member call_abi.
        * gcc/config/i386/mingw32.h:  (TARGET_64BIT_MS_ABI): Replace them 
by using default
        calling abi definitions.
 

May somebody can comment on and or approve this ?

Regards,
 i.A. Kai Tietz



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