/* Definitions of target machine for GNU compiler, for the pdp-11
- Copyright (C) 1994, 1995, 1996, 1998, 1999, 2000, 2001
+ Copyright (C) 1994, 1995, 1996, 1998, 1999, 2000, 2001, 2002
Free Software Foundation, Inc.
Contributed by Michael K. Gschwind (mike@vlsivie.tuwien.ac.at).
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
+#define CONSTANT_POOL_BEFORE_FUNCTION 0
/* check whether load_fpu_reg or not */
#define LOAD_FPU_REG_P(x) ((x)>=8 && (x)<=11)
\f
/* TYPE SIZES */
-#define CHAR_TYPE_SIZE 8
#define SHORT_TYPE_SIZE 16
#define INT_TYPE_SIZE (TARGET_INT16 ? 16 : 32)
#define LONG_TYPE_SIZE 32
/* Define this if most significant word of a multiword number is numbered. */
#define WORDS_BIG_ENDIAN 1
-/* number of bits in an addressable storage unit */
-#define BITS_PER_UNIT 8
-
-/* Width in bits of a "word", which is the contents of a machine register.
- Note that this is not necessarily the width of data type `int';
- if using 16-bit ints on a 68000, this would still be 32.
- But on a machine with 16-bit registers, this would be 16. */
-/* This is a machine with 16-bit registers */
-#define BITS_PER_WORD 16
-
/* Width of a word, in units (bytes).
UNITS OR BYTES - seems like units */
DImode or Dfmode ...*/
#define MAX_FIXED_MODE_SIZE 64
-/* Width in bits of a pointer.
- See also the macro `Pmode' defined below. */
-#define POINTER_SIZE 16
-
/* Allocation boundary (in *bits*) for storing pointers in memory. */
#define POINTER_BOUNDARY 16
extern int current_first_parm_offset;
/* Offset of first parameter from the argument pointer register value.
- For the pdp11, this is non-zero to account for the return address.
+ For the pdp11, this is nonzero to account for the return address.
1 - return address
2 - frame pointer (always saved, even when not used!!!!)
-- chnage some day !!!:q!
#define FUNCTION_ARG_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED) 0
-/* This macro generates the assembly code for function entry. */
-#define FUNCTION_PROLOGUE(FILE, SIZE) \
- output_function_prologue(FILE, SIZE);
-
/* Output assembler code to FILE to increment profiler label # LABELNO
for profiling a function entry. */
#define EXIT_IGNORE_STACK 1
-/* This macro generates the assembly code for function exit,
- on machines that need it. If FUNCTION_EPILOGUE is not defined
- then individual return instructions are generated for each
- return statement. Args are same as for FUNCTION_PROLOGUE.
-*/
-
-#define FUNCTION_EPILOGUE(FILE, SIZE) \
- output_function_epilogue(FILE, SIZE);
-
#define INITIAL_FRAME_POINTER_OFFSET(DEPTH_VAR) \
{ \
int offset, regno; \
/* Addressing modes, and classification of registers for them. */
#define HAVE_POST_INCREMENT 1
-/* #define HAVE_POST_DECREMENT 0 */
#define HAVE_PRE_DECREMENT 1
-/* #define HAVE_PRE_INCREMENT 0 */
/* Macros to check register numbers against specific register classes. */
/* Nonzero if the constant value X is a legitimate general operand.
It is given that X satisfies CONSTANT_P or is a CONST_DOUBLE. */
-#define LEGITIMATE_CONSTANT_P(X) (1)
+#define LEGITIMATE_CONSTANT_P(X) (TARGET_FPU? 1: !(GET_CODE(X) == CONST_DOUBLE))
/* The macros REG_OK_FOR..._P assume that the arg is a REG rtx
and check its validity for a certain class.
&& GET_CODE (XEXP (operand, 0)) == REG \
&& REG_OK_FOR_BASE_P (XEXP (operand, 0))) \
goto ADDR; \
+ \
+ /* accept -(SP) -- which uses PRE_MODIFY for byte mode */ \
+ if (GET_CODE (operand) == PRE_MODIFY \
+ && GET_CODE (XEXP (operand, 0)) == REG \
+ && REGNO (XEXP (operand, 0)) == 6 \
+ && GET_CODE ((xfoob = XEXP (operand, 1))) == PLUS \
+ && GET_CODE (XEXP (xfoob, 0)) == REG \
+ && REGNO (XEXP (xfoob, 0)) == 6 \
+ && CONSTANT_P (XEXP (xfoob, 1)) \
+ && INTVAL (XEXP (xfoob,1)) == -2) \
+ goto ADDR; \
+ \
+ /* accept (SP)+ -- which uses POST_MODIFY for byte mode */ \
+ if (GET_CODE (operand) == POST_MODIFY \
+ && GET_CODE (XEXP (operand, 0)) == REG \
+ && REGNO (XEXP (operand, 0)) == 6 \
+ && GET_CODE ((xfoob = XEXP (operand, 1))) == PLUS \
+ && GET_CODE (XEXP (xfoob, 0)) == REG \
+ && REGNO (XEXP (xfoob, 0)) == 6 \
+ && CONSTANT_P (XEXP (xfoob, 1)) \
+ && INTVAL (XEXP (xfoob,1)) == 2) \
+ goto ADDR; \
+ \
\
/* handle another level of indirection ! */ \
if (GET_CODE(operand) != MEM) \
Do not define this if the table should contain absolute addresses. */
/* #define CASE_VECTOR_PC_RELATIVE 1 */
-/* Specify the tree operation to be used to convert reals to integers. */
-#define IMPLICIT_FIX_EXPR FIX_ROUND_EXPR
-
-/* This is the kind of divide that is easiest to do in the general case. */
-#define EASY_DIV_EXPR TRUNC_DIV_EXPR
-
/* Define this as 1 if `char' should by default be signed; else as 0. */
#define DEFAULT_SIGNED_CHAR 1
#define MOVE_MAX 2
-/* Zero extension is faster if the target is known to be zero */
-/* #define SLOW_ZERO_EXTEND */
-
/* Nonzero if access to memory by byte is slow and undesirable. -
*/
#define SLOW_BYTE_ACCESS 0
is done just by pretending it is already truncated. */
#define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
-
-/* Add any extra modes needed to represent the condition code.
-
- CCFPmode is used for FPU, but should we use a separate reg? */
-#define EXTRA_CC_MODES CC(CCFPmode, "CCFP")
-
/* Give a comparison code (EQ, NE etc) and the first operand of a COMPARE,
return the mode to be used for the comparison. For floating-point, CCFPmode
should be used. */
{"r0", "r1", "r2", "r3", "r4", "r5", "sp", "pc", \
"ac0", "ac1", "ac2", "ac3", "ac4", "ac5" }
-/* How to renumber registers for dbx and gdb. */
-
-#define DBX_REGISTER_NUMBER(REGNO) (REGNO)
-
-/* This is how to output the definition of a user-level label named NAME,
- such as the label on a static function or variable NAME. */
-
-#define ASM_OUTPUT_LABEL(FILE,NAME) \
- do { assemble_name (FILE, NAME); fputs (":\n", FILE); } while (0)
-
-/* This is how to output a command to make the user-level label named NAME
- defined for reference from other files. */
-
-#define ASM_GLOBALIZE_LABEL(FILE,NAME) \
- do { fputs ("\t.globl ", FILE); assemble_name (FILE, NAME); fputs("\n", FILE); } while (0)
+/* Globalizing directive for a label. */
+#define GLOBAL_ASM_OP "\t.globl "
/* The prefix to add to user-visible assembler symbols. */
#define USER_LABEL_PREFIX "_"
-/* This is how to output an internal numbered label where
- PREFIX is the class of label and NUM is the number within the class. */
-
-#define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \
- fprintf (FILE, "%s_%d:\n", PREFIX, NUM)
-
/* This is how to store into the string LABEL
the symbol_ref name of an internal numbered label where
PREFIX is the class of label and NUM is the number within the class.
#define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \
sprintf (LABEL, "*%s_%d", PREFIX, NUM)
-/* This is how to output an assembler line defining a `double' constant. */
-
-#define ASM_OUTPUT_DOUBLE(FILE,VALUE) \
- fprintf (FILE, "\tdouble %.20e\n", (VALUE))
-
-/* This is how to output an assembler line defining a `float' constant. */
-
-#define ASM_OUTPUT_FLOAT(FILE,VALUE) \
- fprintf (FILE, "\tfloat %.12e\n", (VALUE))
-
-/* Likewise for `short' and `char' constants. */
-
-#define ASM_OUTPUT_SHORT(FILE,VALUE) \
-( fprintf (FILE, TARGET_UNIX_ASM ? "\t" : "\t.word "), \
- output_addr_const_pdp11 (FILE, (VALUE)), \
- fprintf (FILE, " /*short*/\n"))
-
-#define ASM_OUTPUT_CHAR(FILE,VALUE) \
-( fprintf (FILE, "\t.byte "), \
- output_addr_const_pdp11 (FILE, (VALUE)), \
- fprintf (FILE, " /* char */\n"))
-
-/* This is how to output an assembler line for a numeric constant byte.
- This won't actually be used since we define ASM_OUTPUT_CHAR.
-*/
-
-#define ASM_OUTPUT_BYTE(FILE,VALUE) \
- fprintf (FILE, "\t.byte %o\n", (VALUE))
-
#define ASM_OUTPUT_ASCII(FILE, P, SIZE) \
output_ascii (FILE, P, SIZE)
}
#define ASM_OUTPUT_SKIP(FILE,SIZE) \
- fprintf (FILE, "\t.=.+ %o\n", (SIZE))
+ fprintf (FILE, "\t.=.+ %#ho\n", (unsigned short)(SIZE))
/* This says how to output an assembler line
to define a global common symbol. */
assemble_name ((FILE), (NAME)), \
fprintf ((FILE), "\n"), \
assemble_name ((FILE), (NAME)), \
- fprintf ((FILE), ": .=.+ %o\n", (ROUNDED)) \
+ fprintf ((FILE), ": .=.+ %#ho\n", (unsigned short)(ROUNDED)) \
)
/* This says how to output an assembler line
#define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED) \
( assemble_name ((FILE), (NAME)), \
- fprintf ((FILE), ":\t.=.+ %o\n", (ROUNDED)))
-
-/* Store in OUTPUT a string (made with alloca) containing
- an assembler-name for a local static variable named NAME.
- LABELNO is an integer which is different for each call. */
-
-#define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \
-( (OUTPUT) = (char *) alloca (strlen ((NAME)) + 10), \
- sprintf ((OUTPUT), "%s.%d", (NAME), (LABELNO)))
-
-/* Define the parentheses used to group arithmetic operations
- in assembler code. */
-
-#define ASM_OPEN_PAREN "["
-#define ASM_CLOSE_PAREN "]"
+ fprintf ((FILE), ":\t.=.+ %#ho\n", (unsigned short)(ROUNDED)))
/* Print operand X (an rtx) in assembler syntax to file FILE.
CODE is a letter or dot (`z' in `%z0') or 0 if no letter was specified.
else if (GET_CODE (X) == MEM) \
output_address (XEXP (X, 0)); \
else if (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) != SImode) \
- { union { double d; int i[2]; } u; \
- u.i[0] = CONST_DOUBLE_LOW (X); u.i[1] = CONST_DOUBLE_HIGH (X); \
- fprintf (FILE, "#%.20e", u.d); } \
+ { char buf[30]; \
+ real_to_decimal (buf, CONST_DOUBLE_REAL_VALUE (X), sizeof (buf), 0, 1); \
+ fprintf (FILE, "$0F%s", buf); } \
else { putc ('$', FILE); output_addr_const_pdp11 (FILE, X); }}
\f
/* Print a memory address as an operand to reference that memory location. */
if (TARGET_SPLIT) \
abort(); \
\
- ASM_OUTPUT_SHORT (FILE, GEN_INT (0x9400+STATIC_CHAIN_REGNUM)); \
- ASM_OUTPUT_SHORT (FILE, const0_rtx); \
- ASM_OUTPUT_SHORT (FILE, GEN_INT(0x0058)); \
- ASM_OUTPUT_SHORT (FILE, const0_rtx); \
+ assemble_aligned_integer (2, GEN_INT (0x9400+STATIC_CHAIN_REGNUM)); \
+ assemble_aligned_integer (2, const0_rtx); \
+ assemble_aligned_integer (2, GEN_INT(0x0058)); \
+ assemble_aligned_integer (2, const0_rtx); \
}
#define TRAMPOLINE_SIZE 8
-#define TRAMPOLINE_ALIGN 16
+#define TRAMPOLINE_ALIGNMENT 16
/* Emit RTL insns to initialize the variable parts of a trampoline.
FNADDR is an RTX for the address of the function's pure code.
#define COMPARE_FLAG_MODE HImode
-
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