/* Definitions of target machine for GNU compiler, Renesas M32R cpu.
- Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
- Free Software Foundation, Inc.
+ Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
+ 2005 Free Software Foundation, Inc.
This file is part of GCC.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to
- the Free Software Foundation, 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ the Free Software Foundation, 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA. */
/* Things to do:
- longlong.h?
#undef LINK_SPEC
#undef STARTFILE_SPEC
#undef ENDFILE_SPEC
-#undef SUBTARGET_SWITCHES
#undef ASM_APP_ON
#undef ASM_APP_OFF
#define STARTFILE_CPU_SPEC "%{!shared:crt0.o%s} %{m32rx:m32rx/crtinit.o%s} %{!m32rx:crtinit.o%s}"
#define ENDFILE_CPU_SPEC "-lgloss %{m32rx:m32rx/crtfini.o%s} %{!m32rx:crtfini.o%s}"
-/* Extra machine dependent switches. */
-#define SUBTARGET_SWITCHES \
- { "32rx", TARGET_M32RX_MASK, "Compile for the m32rx" }, \
- { "32r2", TARGET_M32R2_MASK, "Compile for the m32r2" }, \
- { "32r", -(TARGET_M32RX_MASK+TARGET_M32R2_MASK), "" },
-
/* Define this macro as a C expression for the initializer of an array of
strings to tell the driver program which options are defaults for this
target and thus do not need to be handled specially when using
builtin_assert ("machine=m32r"); \
builtin_define (TARGET_BIG_ENDIAN \
? "__BIG_ENDIAN__" : "__LITTLE_ENDIAN__"); \
- if (flag_pic) \
- { \
- builtin_define ("__pic__"); \
- builtin_define ("__PIC__"); \
- } \
} \
while (0)
/* Options to pass on to the assembler. */
#undef ASM_SPEC
-#define ASM_SPEC "%{v} %(asm_cpu) %(relax) %{fpic:-K PIC} %{fPIC:-K PIC}"
+#define ASM_SPEC "%{v} %(asm_cpu) %(relax) %{fpic|fpie:-K PIC} %{fPIC|fPIE:-K PIC}"
#define LINK_SPEC "%{v} %(link_cpu) %(relax)"
\f
/* Run-time compilation parameters selecting different hardware subsets. */
-extern int target_flags;
-
-/* If nonzero, tell the linker to do relaxing.
- We don't do anything with the option, other than recognize it.
- LINK_SPEC handles passing -relax to the linker.
- This can cause incorrect debugging information as line numbers may
- turn out wrong. This shouldn't be specified unless accompanied with -O2
- [where the user expects debugging information to be less accurate]. */
-#define TARGET_RELAX_MASK (1 << 0)
-
-/* For miscellaneous debugging purposes. */
-#define TARGET_DEBUG_MASK (1 << 1)
-#define TARGET_DEBUG (target_flags & TARGET_DEBUG_MASK)
-
-/* Align loops to 32 byte boundaries (cache line size). */
-/* ??? This option is experimental and is not documented. */
-#define TARGET_ALIGN_LOOPS_MASK (1 << 2)
-#define TARGET_ALIGN_LOOPS (target_flags & TARGET_ALIGN_LOOPS_MASK)
-
-/* Change issue rate. */
-#define TARGET_LOW_ISSUE_RATE_MASK (1 << 3)
-#define TARGET_LOW_ISSUE_RATE (target_flags & TARGET_LOW_ISSUE_RATE_MASK)
-
-/* Change branch cost */
-#define TARGET_BRANCH_COST_MASK (1 << 4)
-#define TARGET_BRANCH_COST (target_flags & TARGET_BRANCH_COST_MASK)
-
-/* Target machine to compile for. */
-#define TARGET_M32R 1
-
-/* Support extended instruction set. */
-#define TARGET_M32RX_MASK (1 << 5)
-#define TARGET_M32RX (target_flags & TARGET_M32RX_MASK)
-#undef TARGET_M32R
-#define TARGET_M32R (! TARGET_M32RX)
-
-/* Support extended instruction set of m32r2. */
-#define TARGET_M32R2_MASK (1 << 6)
-#define TARGET_M32R2 (target_flags & TARGET_M32R2_MASK)
-#undef TARGET_M32R
#define TARGET_M32R (! TARGET_M32RX && ! TARGET_M32R2)
-/* Little Endian Flag. */
-#define LITTLE_ENDIAN_BIT (1 << 7)
-#define TARGET_LITTLE_ENDIAN (target_flags & LITTLE_ENDIAN_BIT)
-#define TARGET_BIG_ENDIAN (! TARGET_LITTLE_ENDIAN)
-
-/* This defaults us to big-endian. */
-#ifndef TARGET_ENDIAN_DEFAULT
-#define TARGET_ENDIAN_DEFAULT 0
+#ifndef TARGET_LITTLE_ENDIAN
+#define TARGET_LITTLE_ENDIAN 0
#endif
+#define TARGET_BIG_ENDIAN (! TARGET_LITTLE_ENDIAN)
/* This defaults us to m32r. */
#ifndef TARGET_CPU_DEFAULT
#define TARGET_CPU_DEFAULT 0
#endif
-/* Macro to define tables used to set the flags.
- This is a list in braces of pairs in braces,
- each pair being { "NAME", VALUE }
- where VALUE is the bits to set or minus the bits to clear.
- An empty string NAME is used to identify the default VALUE. */
-
-#ifndef SUBTARGET_SWITCHES
-#define SUBTARGET_SWITCHES
-#endif
-
-#ifndef TARGET_DEFAULT
-#define TARGET_DEFAULT (TARGET_CPU_DEFAULT | TARGET_ENDIAN_DEFAULT)
-#endif
-
-#define TARGET_SWITCHES \
-{ \
-/* { "relax", TARGET_RELAX_MASK, "" }, \
- { "no-relax", -TARGET_RELAX_MASK, "" },*/ \
- { "debug", TARGET_DEBUG_MASK, \
- N_("Display compile time statistics") }, \
- { "align-loops", TARGET_ALIGN_LOOPS_MASK, \
- N_("Align all loops to 32 byte boundary") }, \
- { "no-align-loops", -TARGET_ALIGN_LOOPS_MASK, "" }, \
- { "issue-rate=1", TARGET_LOW_ISSUE_RATE_MASK, \
- N_("Only issue one instruction per cycle") }, \
- { "issue-rate=2", -TARGET_LOW_ISSUE_RATE_MASK, "" }, \
- { "branch-cost=1", TARGET_BRANCH_COST_MASK, \
- N_("Prefer branches over conditional execution") }, \
- { "branch-cost=2", -TARGET_BRANCH_COST_MASK, "" }, \
- SUBTARGET_SWITCHES \
- { "", TARGET_DEFAULT, "" } \
-}
-
-extern const char * m32r_model_string;
-extern const char * m32r_sdata_string;
-
-/* Cache-flush support. */
-extern const char * m32r_cache_flush_func;
-extern const char * m32r_cache_flush_trap_string;
-extern int m32r_cache_flush_trap;
-
-#ifndef SUBTARGET_OPTIONS
-#define SUBTARGET_OPTIONS
-#endif
-
-#define TARGET_OPTIONS \
-{ \
- { "model=", & m32r_model_string, \
- N_("Code size: small, medium or large"), 0}, \
- { "sdata=", & m32r_sdata_string, \
- N_("Small data area: none, sdata, use"), 0}, \
- { "no-flush-func", & m32r_cache_flush_func, \
- N_("Don't call any cache flush functions") }, \
- { "flush-func=", & m32r_cache_flush_func, \
- N_("Specify cache flush function") }, \
- { "no-flush-trap", & m32r_cache_flush_trap_string, \
- N_("Don't call any cache flush trap") }, \
- { "flush-trap=", & m32r_cache_flush_trap_string, \
- N_("Specify cache flush trap number") } \
- SUBTARGET_OPTIONS \
-}
-
/* Code Models
Code models are used to select between two choices of two separate
/* The default is the small model. */
#ifndef M32R_MODEL_DEFAULT
-#define M32R_MODEL_DEFAULT "small"
+#define M32R_MODEL_DEFAULT M32R_MODEL_SMALL
#endif
/* Small Data Area
/* Default is to disable the SDA
[for upward compatibility with previous toolchains]. */
#ifndef M32R_SDATA_DEFAULT
-#define M32R_SDATA_DEFAULT "none"
+#define M32R_SDATA_DEFAULT M32R_SDATA_NONE
#endif
/* Define this macro as a C expression for the initializer of an array of
if (SIZE) \
{ \
flag_omit_frame_pointer = TRUE; \
- flag_strength_reduce = FALSE; \
} \
\
SUBTARGET_OPTIMIZATION_OPTIONS \
SUBTARGET_CALL_USED_REGISTERS \
}
+#define CALL_REALLY_USED_REGISTERS CALL_USED_REGISTERS
+
/* Zero or more C statements that may conditionally modify two variables
`fixed_regs' and `call_used_regs' (both of type `char []') after they
have been initialized from the two preceding macros.
do \
{ \
if (flag_pic) \
- fixed_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \
+ { \
+ fixed_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \
+ call_used_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \
+ } \
} \
while (0)
#endif
else if ((FROM) == ARG_POINTER_REGNUM && (TO) == STACK_POINTER_REGNUM) \
(OFFSET) = size - current_function_pretend_args_size; \
else \
- abort (); \
+ gcc_unreachable (); \
} \
while (0)
\f
? gen_rtx_REG ((MODE), ROUND_ADVANCE_CUM ((CUM), (MODE), (TYPE))) \
: 0)
-/* A C expression for the number of words, at the beginning of an
- argument, must be put in registers. The value must be zero for
- arguments that are passed entirely in registers or that are entirely
- pushed on the stack.
-
- On some machines, certain arguments must be passed partially in
- registers and partially in memory. On these machines, typically the
- first @var{n} words of arguments are passed in registers, and the rest
- on the stack. If a multi-word argument (a @code{double} or a
- structure) crosses that boundary, its first few words must be passed
- in registers and the rest must be pushed. This macro tells the
- compiler when this occurs, and how many of the words should go in
- registers. */
-#define FUNCTION_ARG_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED) \
- function_arg_partial_nregs (&CUM, (int)MODE, TYPE, NAMED)
-
/* Update the data in CUM to advance over an argument
of mode MODE and data type TYPE.
(TYPE is null for libcalls where that information may not be available.) */
#define CACHE_FLUSH_FUNC "_flush_cache"
#endif
#ifndef CACHE_FLUSH_TRAP
-#define CACHE_FLUSH_TRAP "12"
+#define CACHE_FLUSH_TRAP 12
#endif
/* Length in bytes of the trampoline for entering a nested function. */
(CXT)); \
emit_move_insn (gen_rtx_MEM (SImode, plus_constant (TRAMP, 20)), \
(FNADDR)); \
- if (m32r_cache_flush_trap_string && m32r_cache_flush_trap_string[0]) \
+ if (m32r_cache_flush_trap >= 0) \
emit_insn (gen_flush_icache (validize_mem (gen_rtx_MEM (SImode, TRAMP)),\
GEN_INT (m32r_cache_flush_trap) )); \
else if (m32r_cache_flush_func && m32r_cache_flush_func[0]) \
/* This register is call-saved on the M32R. */
/*#define PIC_OFFSET_TABLE_REG_CALL_CLOBBERED*/
-/* By generating position-independent code, when two different programs (A
- and B) share a common library (libC.a), the text of the library can be
- shared whether or not the library is linked at the same address for both
- programs. In some of these environments, position-independent code
- requires not only the use of different addressing modes, but also
- special code to enable the use of these addressing modes.
-
- The FINALIZE_PIC macro serves as a hook to emit these special
- codes once the function is being compiled into assembly code, but not
- before. (It is not done before, because in the case of compiling an
- inline function, it would lead to multiple PIC prologues being
- included in functions which used inline functions and were compiled to
- assembly language.) */
-
-#define FINALIZE_PIC m32r_finalize_pic ()
-
/* A C expression that is nonzero if X is a legitimate immediate
operand on the target machine when generating position independent code.
You can assume that X satisfies CONSTANT_P, so you need not
/* Globalizing directive for a label. */
#define GLOBAL_ASM_OP "\t.global\t"
-/* If -Os, don't force line number labels to begin at the beginning of
- the word; we still want the assembler to try to put things in parallel,
- should that be possible.
- For m32r/d, instructions are never in parallel (other than with a nop)
- and the simulator and stub both handle a breakpoint in the middle of
- a word so don't ever force line number labels to begin at the beginning
- of a word. */
+/* We do not use DBX_LINES_FUNCTION_RELATIVE or
+ dbxout_stab_value_internal_label_diff here because
+ we need to use .debugsym for the line label. */
-#undef ASM_OUTPUT_SOURCE_LINE
-#define ASM_OUTPUT_SOURCE_LINE(file, line, counter) \
+#define DBX_OUTPUT_SOURCE_LINE(file, line, counter) \
do \
{ \
- fprintf (file, ".stabn 68,0,%d,.LM%d-", \
- line, counter); \
- assemble_name \
- (file, XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0)); \
- fprintf (file, (optimize_size || TARGET_M32R) \
- ? "\n\t.debugsym .LM%d\n" \
- : "\n.LM%d:\n", \
- counter); \
- } \
+ rtx begin_label = XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0);\
+ char label[64]; \
+ ASM_GENERATE_INTERNAL_LABEL (label, "LM", counter); \
+ \
+ dbxout_begin_stabn_sline (line); \
+ assemble_name (file, label); \
+ putc ('-', file); \
+ assemble_name (file, begin_label); \
+ fputs ("\n\t.debugsym ", file); \
+ assemble_name (file, label); \
+ putc ('\n', file); \
+ counter += 1; \
+ } \
while (0)
/* How to refer to registers in assembler output.
{ \
if (! TARGET_SDATA_NONE \
&& (SIZE) > 0 && (SIZE) <= g_switch_value) \
- named_section (0, ".sbss", 0); \
+ switch_to_section (get_named_section (NULL, ".sbss", 0)); \
else \
- bss_section (); \
+ switch_to_section (bss_section); \
ASM_OUTPUT_ALIGN (FILE, floor_log2 (ALIGN / BITS_PER_UNIT)); \
last_assemble_variable_decl = DECL; \
ASM_DECLARE_OBJECT_NAME (FILE, NAME, DECL); \
#define DBX_DEBUGGING_INFO 1
#define DWARF2_DEBUGGING_INFO 1
-/* Prefer STABS (for now). */
+/* Use DWARF2 debugging info by default. */
#undef PREFERRED_DEBUGGING_TYPE
-#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
+#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
/* Turn off splitting of long stabs. */
#define DBX_CONTIN_LENGTH 0
/* Define if loading in MODE, an integral mode narrower than BITS_PER_WORD
will either zero-extend or sign-extend. The value of this macro should
be the code that says which one of the two operations is implicitly
- done, NIL if none. */
+ done, UNKNOWN if none. */
#define LOAD_EXTEND_OP(MODE) ZERO_EXTEND
/* Max number of bytes we can move from memory
After generation of rtl, the compiler makes no further distinction
between pointers and any other objects of this machine mode. */
/* ??? The M32R doesn't have full 32 bit pointers, but making this PSImode has
- it's own problems (you have to add extendpsisi2 and truncsipsi2).
+ its own problems (you have to add extendpsisi2 and truncsipsi2).
Try to avoid it. */
#define Pmode SImode
#define M32R_INTERRUPT_P(TYPE) ((TYPE) == M32R_FUNCTION_INTERRUPT)
-/* Define this if you have defined special-purpose predicates in the
- file `MACHINE.c'. This macro is called within an initializer of an
- array of structures. The first field in the structure is the name
- of a predicate and the second field is an array of rtl codes. For
- each predicate, list all rtl codes that can be in expressions
- matched by the predicate. The list should have a trailing comma. */
-
-#define PREDICATE_CODES \
-{ "reg_or_zero_operand", { REG, SUBREG, CONST_INT }}, \
-{ "conditional_move_operand", { REG, SUBREG, CONST_INT }}, \
-{ "carry_compare_operand", { EQ, NE }}, \
-{ "eqne_comparison_operator", { EQ, NE }}, \
-{ "signed_comparison_operator", { EQ, NE, LT, LE, GT, GE }}, \
-{ "move_dest_operand", { REG, SUBREG, MEM }}, \
-{ "move_src_operand", { REG, SUBREG, MEM, CONST_INT, \
- CONST_DOUBLE, LABEL_REF, CONST, \
- SYMBOL_REF }}, \
-{ "move_double_src_operand", { REG, SUBREG, MEM, CONST_INT, \
- CONST_DOUBLE }}, \
-{ "two_insn_const_operand", { CONST_INT }}, \
-{ "symbolic_operand", { SYMBOL_REF, LABEL_REF, CONST }}, \
-{ "seth_add3_operand", { SYMBOL_REF, LABEL_REF, CONST }}, \
-{ "int8_operand", { CONST_INT }}, \
-{ "uint16_operand", { CONST_INT }}, \
-{ "reg_or_int16_operand", { REG, SUBREG, CONST_INT }}, \
-{ "reg_or_uint16_operand", { REG, SUBREG, CONST_INT }}, \
-{ "reg_or_cmp_int16_operand", { REG, SUBREG, CONST_INT }}, \
-{ "reg_or_eq_int16_operand", { REG, SUBREG, CONST_INT }}, \
-{ "cmp_int16_operand", { CONST_INT }}, \
-{ "call_address_operand", { SYMBOL_REF, LABEL_REF, CONST }}, \
-{ "extend_operand", { REG, SUBREG, MEM }}, \
-{ "small_insn_p", { INSN, CALL_INSN, JUMP_INSN }}, \
-{ "m32r_block_immediate_operand",{ CONST_INT }}, \
-{ "large_insn_p", { INSN, CALL_INSN, JUMP_INSN }}, \
-{ "seth_add3_operand", { SYMBOL_REF, LABEL_REF, CONST }},
-
+/* The maximum number of bytes to copy using pairs of load/store instructions.
+ If a block is larger than this then a loop will be generated to copy
+ MAX_MOVE_BYTES chunks at a time. The value of 32 is a semi-arbitrary choice.
+ A customer uses Dhrystome as their benchmark, and Dhrystone has a 31 byte
+ string copy in it. */
+#define MAX_MOVE_BYTES 32
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