/* Definitions of target machine for GNU compiler, for MMIX.
- Copyright (C) 2000, 2001, 2002 Free Software Foundation, Inc.
+ Copyright (C) 2000, 2001, 2002, 2004 Free Software Foundation, Inc.
Contributed by Hans-Peter Nilsson (hp@bitrange.com)
This file is part of GCC.
address goes in a global register. When addressing, it's more like
"base address plus offset", with the offset being 0..255 from the base,
which itself can be a symbol plus an offset. The effect is like having
- a constant pool in global registers, code offseting from those
+ a constant pool in global registers, code offsetting from those
registers (automatically causing a request for a suitable constant base
address register) without having to know the specific register or the
specific offset. The setback is that there's a limited number of
registers, and you'll not find out until link time whether you
- should've compiled with -mno-base-addresses. */
+ should have compiled with -mno-base-addresses. */
#define TARGET_MASK_BASE_ADDRESSES 128
/* FIXME: Get rid of this one. */
/* FIXME: Promotion of modes currently generates slow code, extending
before every operation. */
+/* I'm a little bit undecided about this one. It might be beneficial to
+ promote all operations. */
-#define PROMOTE_MODE(MODE, UNSIGNEDP, TYPE) \
+#define PROMOTE_FUNCTION_MODE(MODE, UNSIGNEDP, TYPE) \
do { \
if (GET_MODE_CLASS (MODE) == MODE_INT \
&& GET_MODE_SIZE (MODE) < 8) \
} \
} while (0)
-#define PROMOTE_FUNCTION_ARGS
-
-#if 0
-/* Apparently not doing TRT if int < register-size. FIXME: Perhaps
- FUNCTION_VALUE and LIBCALL_VALUE needs tweaking as some ports say. */
-#define PROMOTE_FUNCTION_RETURN
-#endif
-
-/* I'm a little bit undecided about this one. It might be beneficial to
- promote all operations. */
-#define PROMOTE_FOR_CALL_ONLY
-
/* We need to align everything to 64 bits that can affect the alignment
of other types. Since address N is interpreted in MMIX as (N modulo
access_size), we must align. */
/* Node: Elimination */
/* FIXME: Is this requirement built-in? Anyway, we should try to get rid
of it; we can deduce the value. */
-#define FRAME_POINTER_REQUIRED (nonlocal_goto_stack_level != NULL_RTX)
+#define FRAME_POINTER_REQUIRED current_function_has_nonlocal_label
/* The frame-pointer is stored in a location that either counts to the
offset of incoming parameters, or that counts to the offset of the
#define FUNCTION_INCOMING_ARG(CUM, MODE, TYPE, NAMED) \
mmix_function_arg (&(CUM), MODE, TYPE, NAMED, 1)
-#define FUNCTION_ARG_PASS_BY_REFERENCE(CUM, MODE, TYPE, NAMED) \
- mmix_function_arg_pass_by_reference (&(CUM), MODE, TYPE, NAMED)
-
-/* This *sounds* good, but does not seem to be implemented correctly to
- be a win; at least it wasn't in 2.7.2. FIXME: Check and perhaps
- replace with a big comment.
- The definition needs to match or be a subset of
- FUNCTION_ARG_PASS_BY_REFERENCE, since not all callers check that before
- usage. Watch lots of C++ testcases fail if set to 1, for example
- g++.dg/init/byval1.C. */
-#define FUNCTION_ARG_CALLEE_COPIES(CUM, MODE, TYPE, NAMED) \
- mmix_function_arg_pass_by_reference (&(CUM), MODE, TYPE, NAMED)
+#define FUNCTION_ARG_CALLEE_COPIES(CUM, MODE, TYPE, NAMED) 1
typedef struct { int regs; int lib; } CUMULATIVE_ARGS;
-#define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, INDIRECT) \
+#define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, INDIRECT, N_NAMED_ARGS) \
((CUM).regs = 0, (CUM).lib = ((LIBNAME) != 0))
#define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \
((CUM).regs \
- = ((MUST_PASS_IN_STACK (MODE, TYPE)) \
+ = ((targetm.calls.must_pass_in_stack (MODE, TYPE)) \
|| (MMIX_FUNCTION_ARG_SIZE (MODE, TYPE) > 8 \
&& !TARGET_LIBFUNC && !(CUM).lib)) \
? (MMIX_MAX_ARGS_IN_REGS) + 1 \
mmix_function_value_regno_p (REGNO)
-/* Node: Aggregate Return */
-
-#define STRUCT_VALUE_REGNUM MMIX_STRUCT_VALUE_REGNUM
-
-
/* Node: Caller Saves */
/* (empty) */
#define FUNCTION_PROFILER(FILE, LABELNO) \
mmix_function_profiler (FILE, LABELNO)
-/* Node: Varargs */
-
-/* For the moment, let's stick to pushing argument registers on the stack.
- Later, we can parse all arguments in registers, to improve
- performance. */
-#define SETUP_INCOMING_VARARGS(A, M, T, P, S) \
- mmix_setup_incoming_varargs(&(A), M, T, &(P), S)
-
-/* FIXME: This and other EXPAND_BUILTIN_VA_... target macros are not
- documented, although used by several targets. */
-#define EXPAND_BUILTIN_VA_ARG(VALIST, TYPE) \
- mmix_expand_builtin_va_arg (VALIST, TYPE)
-
/* Node: Trampolines */
#define TRAMPOLINE_TEMPLATE(FILE) \
mmix_initialize_trampoline (ADDR, FNADDR, STATIC_CHAIN)
-/* Node: Library Calls */
-
-#define TARGET_MEM_FUNCTIONS
-
-
/* Node: Addressing Modes */
#define CONSTANT_ADDRESS_P(X) \
#define REG_OK_FOR_INDEX_P(X) REG_OK_FOR_BASE_P (X)
-#define LEGITIMIZE_ADDRESS(X, OLDX, MODE, WIN)
-
#define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR, LABEL)
#define LEGITIMATE_CONSTANT_P(X) \
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