tm.texi (OVERRIDE_ABI_FORMAT): New.

2008-06-03  Kai Tietz  <kai.tietz@onevision.com>

	* doc/tm.texi (OVERRIDE_ABI_FORMAT): New.
	* doc/extend.texi (ms_abi,sysv_abi): New attribute description.
	* function.c (allocate_struct_function): Use of
	OVERRIDE_ABI_FORMAT.
	* config/i386/cygming.h (TARGET_64BIT_MS_ABI): Make use
	of cfun and DEFAULT_ABI to deceide abi mode.
	(DEFAULT_ABI): New.
	(REG_PARM_STACK_SPACE): Removed.
	(OUTGOING_REG_PARM_STACK_SPACE): Removed.
	(STACK_BOUNDARY): Use default target to deceide stack boundary.
	* config/i386/i386-protos.h (ix86_cfun_abi): New.
	(ix86_function_abi): Likewise.
	(ix86_function_type_abi): Likewise.
	(ix86_call_abi_override): Likewise.
	* confid/i386/i386.md (SSE_REGPARM_MAX): Replaced by abi
	specific define X86_64_SSE_REGPARM_MAX/X64_SSE_REGPARM_MAX.
	* config/i386/i386.c (override_options): Replace TARGET_64BIT_MS_ABI.
	(X86_64_VARARGS_SIZE): Replace REGPARM_MAX and SSE_REGPARM_MAX by abi
	specific defines.
	(X86_64_REGPARM_MAX): New.
	(X86_64_SSE_REGPARM_MAX): New.
	(X64_REGPARM_MAX): New.
	(X64_SSE_REGPARM_MAX): New.
	(X86_32_REGPARM_MAX): New.
	(X86_32_SSE_REGPARM_MAX): New.
	(ix86_handle_cconv_attribute): Replace TARGET_64BIT_MS_ABI.
	(ix86_function_regparm): Handle user calling abi.
	(ix86_function_arg_regno_p): Replace TARGET_64BIT_MS_ABI
	by DEFAULT_ABI versus SYSV_ABI check.
	(ix86_reg_parm_stack_space): New.
	(ix86_function_type_abi): New.
	(ix86_call_abi_override): New.
	(ix86_function_abi): New.
	(ix86_cfun_abi): New.
	(init_cumulative_args): Call abi specific initialization.
	(function_arg_advance): Remove TARGET_64BIT_MS_ABI.
	(function_arg_64): Extend SSE_REGPARM_MAX check.
	(function_arg (): Remove TARGET_64BIT_MS_ABI.
	(ix86_pass_by_reference): Likewise.
	(ix86_function_value_regno_p): Likewise.
	(function_value_64): Replace REGPARM_MAX, and SSE_REGPARM_MAX.
	(ix86_function_value_1): Replace TARGET_64BIT_MS_ABI.
	(return_in_memory_ms_64): Replace TARGET_64BIT_MS_ABI.
	(ix86_build_builtin_va_list): Replace TARGET_64BIT_MS_ABI.
	(setup_incoming_varargs_64): Adjust regparm for call abi.
	(ix86_setup_incoming_varargs): Replace TARGET_64BIT_MS_ABI.
	(ix86_va_start): Likewise.
	(ix86_gimplify_va_arg): Likewise.
	(ix86_expand_prologue): Likewise.
	(output_pic_addr_const): Likewise.
	(ix86_init_machine_status): Initialize call_abi by DEFAULT_ABI.
	(x86_this_parameter): Replace TARGET_64BIT_MS_ABI.
	(x86_output_mi_thunk): Likewise.
	(x86_function_profiler): Likewise.
	* config/i386/i386.h (TARGET_64BIT_MS_ABI): Use ix64_cfun_abi.
	(SYSV_ABI, MS_ABI): New constants.
	(DEFAULT_ABI): New.
	(init_regs): Add prototype of function in regclass.c file.
	(OVERRIDE_ABI_FORMAT): New.
	(CONDITIONAL_REGISTER_USAGE): Remove TARGET_64BIT_MS_ABI part.
	(REG_PARM_STACK_SPACE): Use ix86_reg_parm_stack_space.
	(OUTGOING_REG_PARM_STACK_SPACE): New.
	(ix86_reg_parm_stack_space): New prototype.
	(CUMULATIVE_ARGS): Add call_abi member.
	(machine_function): Add call_abi member.
	* config/i386/mingw32.h (EXTRA_OS_CPP_BUILTINS): Replace TARGET_64BIT_MS_ABI
	by DEFAULT_ABI compare to MS_ABI.

From-SVN: r136311

2 files changed, 22 insertions, 0 deletions

diff --git a/gcc/doc/extend.texi b/gcc/doc/extend.texi
index 103af2c..9c02560 100644
--- a/gcc/doc/extend.texi
+++ b/gcc/doc/extend.texi
@@ -2508,6 +2508,19 @@ instruction).  Caveat: such addressing is by definition not position
 independent and hence this attribute must not be used for objects
 defined by shared libraries.
 
+@item ms_abi/sysv_abi
+@cindex @code[ms_abi} attribute
+@cindex @code{sysv_abi} attribute
+
+On 64-bit x86_65-*-* targets, you can use an ABI attribute to indicate
+which calling convention should be used for a function.  The @code{ms_abi}
+attribute tells the compiler to use the Microsoft ABI, while the
+@code{sysv_abi} attribute tells the compiler to use the ABI used on
+GNU/Linux and other systems.  The default is to use the Microsoft ABI
+when targeting Windows.  On all other systems, the default is the AMD ABI.
+
+Note, This feature is currently sorried out for Windows targets trying to
+
 @item naked
 @cindex function without a prologue/epilogue code
 Use this attribute on the ARM, AVR, IP2K and SPU ports to indicate that
diff --git a/gcc/doc/tm.texi b/gcc/doc/tm.texi
index 3e4d2b7..d18bf2e 100644
--- a/gcc/doc/tm.texi
+++ b/gcc/doc/tm.texi
@@ -4055,6 +4055,15 @@ arguments are passed on the stack, there is no need to store anything in
 should not be empty, so use @code{int}.
 @end defmac
 
+@defmac OVERRIDE_ABI_FORMAT (@var{fndecl})
+If defined, this macro is called before generating any code for a
+function, but after the @var{cfun} descriptor for the function has been
+created.  The back end may use this macro to update @var{cfun} to
+reflect an ABI other than that which would normally be used by default.
+If the compiler is generating code for a compiler-generated function,
+@var{fndecl} may be @code{NULL}.
+@end defmac
+
 @defmac INIT_CUMULATIVE_ARGS (@var{cum}, @var{fntype}, @var{libname}, @var{fndecl}, @var{n_named_args})
 A C statement (sans semicolon) for initializing the variable
 @var{cum} for the state at the beginning of the argument list.  The