/* Macros to implement the 64 bit ABI. This file is meant to be included
after mips.h. */
-#undef ABI_64BIT
-#define ABI_64BIT 1
+#undef TARGET_DEFAULT
+#define TARGET_DEFAULT MASK_ABICALLS|MASK_FLOAT64|MASK_64BIT
/* For Irix 6, -mips3 implies TARGET_LONG64. */
#undef TARGET_LONG64
-#define TARGET_LONG64 (target_flags & MASK_64BIT)
+#define TARGET_LONG64 (mips_abi == ABI_64)
+
+#undef SUBTARGET_TARGET_OPTIONS
+#define SUBTARGET_TARGET_OPTIONS\
+ { "abi=", &mips_abi_string },
#undef CPP_PREDEFINES
#define CPP_PREDEFINES \
-Asystem(unix) -Asystem(svr4) -Acpu(mips) -Amachine(sgi)"
/* We must make -mips3 do what -mlong64 used to do. */
+/* ??? If no mipsX option given, but a mabi=X option is, then should set
+ _MIPS_ISA based on the mabi=X option. */
+/* ??? If no mabi=X option give, but a mipsX option is, then should set
+ _MIPS_SIM based on the mipsX option. */
+/* ??? Same for _MIPS_SZINT. */
+/* ??? Same for _MIPS_SZPTR. */
+/* ??? Same for __SIZE_TYPE and __PTRDIFF_TYPE. */
#undef CPP_SPEC
#define CPP_SPEC "\
%{!ansi:-D__EXTENSIONS__ -D_SGI_SOURCE -D_LONGLONG} \
%{mips3: -D_MIPS_ISA=_MIPS_ISA_MIPS3} \
%{mips4: -D_MIPS_ISA=_MIPS_ISA_MIPS4} \
%{!mips1: %{!mips2: %{!mips3: %{!mips4: -D_MIPS_ISA=_MIPS_ISA_MIPS4}}}} \
-%{mips1: -D_MIPS_SIM=_MIPS_SIM_ABI32} \
-%{mips2: -D_MIPS_SIM=_MIPS_SIM_ABI32} \
-%{mips3: -D_ABI64=3 -D_MIPS_SIM=_ABI64} \
-%{mips4: -D_ABI64=3 -D_MIPS_SIM=_ABI64} \
-%{!mips1: %{!mips2: %{!mips3: %{!mips4: -D_ABI64=3 -D_MIPS_SIM=_ABI64}}}} \
+%{mabi=32: -D_MIPS_SIM=_MIPS_SIM_ABI32} \
+%{mabi=n32: -D_ABIN32=2 -D_MIPS_SIM=_ABIN32} \
+%{mabi=64: -D_ABI64=3 -D_MIPS_SIM=_ABI64} \
+%{!mabi=32: %{!mabi=n32: %{!mabi=64: -D_ABI64=3 -D_MIPS_SIM=_ABI64}}} \
%{!mint64: -D_MIPS_SZINT=32}%{mint64: -D_MIPS_SZINT=64} \
-%{mips1: -D_MIPS_SZLONG=32}%{mips2: -D_MIPS_SZLONG=32} \
-%{!mips1:%{!mips2: -D_MIPS_SZLONG=64}} \
-%{mips1: -D_MIPS_SZPTR=32}%{mips2: -D_MIPS_SZPTR=32} \
-%{mips3: -D_MIPS_SZPTR=64}%{mips4: -D_MIPS_SZPTR=64} \
-%{!mips1: %{!mips2: %{!mips3: %{!mips4: -D_MIPS_SZPTR=64}}}} \
+%{mabi=32: -D_MIPS_SZLONG=32}%{mabi=n32: -D_MIPS_SZLONG=32} \
+%{!mabi=32: %{!mabi=n32: -D_MIPS_SZLONG=64}} \
+%{mabi=32: -D_MIPS_SZPTR=32}%{mabi=n32: -D_MIPS_SZPTR=32} \
+%{!mabi=32: %{!mabi=n32: -D_MIPS_SZPTR=64}} \
%{!mips1:%{!mips2: -D_COMPILER_VERSION=601}} \
-%{mips1: -D__SIZE_TYPE__=unsigned\\ int -D__PTRDIFF_TYPE__=int} \
-%{mips2: -D__SIZE_TYPE__=unsigned\\ int -D__PTRDIFF_TYPE__=int} \
-%{!mips1:%{!mips2: -D__SIZE_TYPE__=long\\ unsigned\\ int -D__PTRDIFF_TYPE__=long\\ int}} \
-%{mips3:-U__mips -D__mips=3 -D__mips64} \
-%{!mips1:%{!mips2:-U__mips -D__mips=4 -D__mips64}} \
-%{mgp32:-U__mips64} %{mgp64:-D__mips64} \
+%{mabi=32: -D__SIZE_TYPE__=unsigned\\ int -D__PTRDIFF_TYPE__=int} \
+%{mabi=n32: -D__SIZE_TYPE__=unsigned\\ int -D__PTRDIFF_TYPE__=int} \
+%{!mabi=32:%{!mabi=n32: -D__SIZE_TYPE__=long\\ unsigned\\ int -D__PTRDIFF_TYPE__=long\\ int}} \
+%{mips3: -U__mips -D__mips=3} \
+%{!mips1:%{!mips2: -U__mips -D__mips=4}} \
+%{mgp32: -U__mips64}%{mgp64: -D__mips64} \
+%{mabi=32: -U__mips64}%{mabi=n32: -D__mips64} \
+%{!mabi=32: %{!mabi=n32: -D__mips64}} \
%{msingle-float:%{!msoft-float:-D__mips_single_float}} \
%{m4650:%{!msoft-float:-D__mips_single_float}} \
%{EB:-UMIPSEL -U_MIPSEL -U__MIPSEL -U__MIPSEL__ -D_MIPSEB -D__MIPSEB -D__MIPSEB__ %{!ansi:-DMIPSEB}} \
#define EMPTY_FIELD_BOUNDARY 32
#undef STACK_BOUNDARY
-#define STACK_BOUNDARY 128
+#define STACK_BOUNDARY (mips_abi == ABI_32 ? 64 : 128)
#undef MIPS_STACK_ALIGN
-#define MIPS_STACK_ALIGN(LOC) (((LOC)+15) & ~15)
+#define MIPS_STACK_ALIGN(LOC) \
+ (mips_abi == ABI_32 ? ((LOC)+7) & ~7 : ((LOC)+15) & ~15)
#undef GP_ARG_LAST
-#define GP_ARG_LAST (mips_isa < 3 ? GP_REG_FIRST + 7 : GP_REG_FIRST + 11)
+#define GP_ARG_LAST (mips_abi == ABI_32 ? GP_REG_FIRST + 7 : GP_REG_FIRST + 11)
#undef FP_ARG_LAST
-#define FP_ARG_LAST (mips_isa < 3 ? FP_REG_FIRST + 15 : FP_REG_FIRST + 19)
+#define FP_ARG_LAST (mips_abi == ABI_32 ? FP_REG_FIRST + 15 : FP_REG_FIRST + 19)
-/* fp20-23 are now caller saved. */
#undef SUBTARGET_CONDITIONAL_REGISTER_USAGE
#define SUBTARGET_CONDITIONAL_REGISTER_USAGE \
{ \
- if (mips_isa >= 3) \
+ /* fp20-23 are now caller saved. */ \
+ if (mips_abi == ABI_64) \
{ \
int regno; \
for (regno = FP_REG_FIRST + 20; regno < FP_REG_FIRST + 24; regno++) \
call_used_regs[regno] = 1; \
} \
+ /* odd registers from fp21 to fp31 are now caller saved. */ \
+ if (mips_abi == ABI_N32) \
+ { \
+ int regno; \
+ for (regno = FP_REG_FIRST + 21; regno <= FP_REG_FIRST + 31; regno+=2) \
+ call_used_regs[regno] = 1; \
+ } \
}
#undef MAX_ARGS_IN_REGISTERS
-#define MAX_ARGS_IN_REGISTERS (mips_isa < 3 ? 4 : 8)
+#define MAX_ARGS_IN_REGISTERS (mips_abi == ABI_32 ? 4 : 8)
#undef REG_PARM_STACK_SPACE
-#define REG_PARM_STACK_SPARC(FNDECL) \
- (mips_abi < 3 \
+#if 0
+/* ??? This is necessary in order for the ABI_32 support to work. However,
+ expr.c (emit_push_insn) has no support for a REG_PARM_STACK_SPACE
+ definition that returns zero. That would have to be fixed before this
+ can be enabled. */
+#define REG_PARM_STACK_SPACE(FNDECL) \
+ (mips_abi == ABI_32 \
? (MAX_ARGS_IN_REGISTERS*UNITS_PER_WORD) - FIRST_PARM_OFFSET (FNDECL) \
: 0)
+#endif
#define FUNCTION_ARG_PADDING(MODE, TYPE) \
(! BYTES_BIG_ENDIAN \
? ((TYPE) && TREE_CODE (TYPE_SIZE (TYPE)) == INTEGER_CST \
&& int_size_in_bytes (TYPE) < (PARM_BOUNDARY / BITS_PER_UNIT))\
: (GET_MODE_BITSIZE (MODE) < PARM_BOUNDARY \
- && (mips_isa < 3 || GET_MODE_CLASS (MODE) == MODE_INT))) \
+ && (mips_abi == ABI_32 || GET_MODE_CLASS (MODE) == MODE_INT)))\
? downward : upward))
extern struct rtx_def *type_dependent_reg ();
#undef RETURN_IN_MEMORY
#define RETURN_IN_MEMORY(TYPE) \
- (mips_isa < 3 ? TYPE_MODE (TYPE) == BLKmode : int_size_in_bytes (TYPE) > 16)
+ (mips_abi == ABI_32 \
+ ? TYPE_MODE (TYPE) == BLKmode : int_size_in_bytes (TYPE) > 16)
extern struct rtx_def *mips_function_value ();
#undef FUNCTION_VALUE
For stdarg, we do not need to save the current argument, because it
is a real argument. */
#define SETUP_INCOMING_VARARGS(CUM,MODE,TYPE,PRETEND_SIZE,NO_RTL) \
-{ if (mips_isa >= 3 \
+{ if (mips_abi != ABI_32 \
&& ((CUM).arg_words \
< (MAX_ARGS_IN_REGISTERS - ! current_function_varargs))) \
{ \
} \
}
+/* ??? Should disable for mips_abi == ABI32. */
#define STRICT_ARGUMENT_NAMING
/* ??? Unimplemented stuff follows. */
/* ??? Add support for 16 byte/128 bit long doubles here when
- mips_isa >= 3. */
+ mips_abi != ABI32. */
/* ??? Make main return zero if user did not specify return value. */
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