/* Definitions of target machine for GNU compiler. VAX version.
- Copyright (C) 1987, 1988, 1991, 1993, 1994, 1995, 1996, 1997, 1998,
- 1999, 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
+ Copyright (C) 1987-2020 Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
+the Free Software Foundation; either version 3, or (at your option)
any later version.
GCC is distributed in the hope that it will be useful,
GNU General Public License for more details.
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, 51 Franklin Street, Fifth Floor,
-Boston, MA 02110-1301, USA. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
/* Target CPU builtins. */
} \
while (0)
-#define VMS_TARGET 0
-
/* Use -J option for long branch support with Unix assembler. */
#define ASM_SPEC "-J"
%{pg:%eprofiling not supported with -mg\n}}\
%{!mg:%{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
-/* Print subsidiary information on the compiler version in use. */
-
-#ifndef TARGET_NAME /* A more specific value might be supplied via -D. */
-#define TARGET_NAME "vax"
-#endif
-#define TARGET_VERSION fprintf (stderr, " (%s)", TARGET_NAME)
-
/* Run-time compilation parameters selecting different hardware subsets. */
/* Nonzero if ELF. Redefined by vax/elf.h. */
#define TARGET_ELF 0
+/* Use BSD names for udiv and umod libgcc calls. */
+#define TARGET_BSD_DIVMOD 1
+
/* Default target_flags if no switches specified. */
#ifndef TARGET_DEFAULT
#define TARGET_DEFAULT (MASK_UNIX_ASM)
#endif
-#define OVERRIDE_OPTIONS override_options ()
-
\f
/* Target machine storage layout */
Aside from that, you can include as many other registers as you like. */
#define CALL_USED_REGISTERS {1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1}
-/* Return number of consecutive hard regs needed starting at reg REGNO
- to hold something of mode MODE.
- This is ordinarily the length in words of a value of mode MODE
- but can be less for certain modes in special long registers.
- On the VAX, all registers are one word long. */
-#define HARD_REGNO_NREGS(REGNO, MODE) \
- ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
-
-/* Value is 1 if hard register REGNO can hold a value of machine-mode MODE.
- On the VAX, all registers can hold all modes. */
-#define HARD_REGNO_MODE_OK(REGNO, MODE) 1
-
-/* Value is 1 if it is a good idea to tie two pseudo registers
- when one has mode MODE1 and one has mode MODE2.
- If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2,
- for any hard reg, then this must be 0 for correct output. */
-#define MODES_TIEABLE_P(MODE1, MODE2) 1
-
/* Specify the registers used for certain standard purposes.
The values of these macros are register numbers. */
/* Base register for access to local variables of the function. */
#define FRAME_POINTER_REGNUM VAX_FP_REGNUM
-/* Value should be nonzero if functions must have frame pointers.
- Zero means the frame pointer need not be set up (and parms
- may be accessed via the stack pointer) in functions that seem suitable.
- This is computed in `reload', in reload1.c. */
-#define FRAME_POINTER_REQUIRED 1
+/* Offset from the frame pointer register value to the top of stack. */
+#define FRAME_POINTER_CFA_OFFSET(FNDECL) 0
/* Base register for access to arguments of the function. */
#define ARG_POINTER_REGNUM VAX_AP_REGNUM
reg number REGNO. This could be a conditional expression
or could index an array. */
-#define REGNO_REG_CLASS(REGNO) ALL_REGS
+#define REGNO_REG_CLASS(REGNO) ((void)(REGNO), ALL_REGS)
/* The class value for index registers, and the one for base regs. */
#define INDEX_REG_CLASS ALL_REGS
#define BASE_REG_CLASS ALL_REGS
-/* Get reg_class from a letter such as appears in the machine description. */
-
-#define REG_CLASS_FROM_LETTER(C) NO_REGS
-
-/* The letters I, J, K, L, M, N, and O in a register constraint string
- can be used to stand for particular ranges of immediate operands.
- This macro defines what the ranges are.
- C is the letter, and VALUE is a constant value.
- Return 1 if VALUE is in the range specified by C.
-
- `I' is the constant zero.
- `J' is a value between 0 .. 63 (inclusive)
- `K' is a value between -128 and 127 (inclusive)
- 'L' is a value between -32768 and 32767 (inclusive)
- `M' is a value between 0 and 255 (inclusive)
- 'N' is a value between 0 and 65535 (inclusive)
- `O' is a value between -63 and -1 (inclusive) */
-
-#define CONST_OK_FOR_LETTER_P(VALUE, C) \
- ( (C) == 'I' ? (VALUE) == 0 \
- : (C) == 'J' ? 0 <= (VALUE) && (VALUE) < 64 \
- : (C) == 'O' ? -63 <= (VALUE) && (VALUE) < 0 \
- : (C) == 'K' ? -128 <= (VALUE) && (VALUE) < 128 \
- : (C) == 'M' ? 0 <= (VALUE) && (VALUE) < 256 \
- : (C) == 'L' ? -32768 <= (VALUE) && (VALUE) < 32768 \
- : (C) == 'N' ? 0 <= (VALUE) && (VALUE) < 65536 \
- : 0)
-
-/* Similar, but for floating constants, and defining letters G and H.
- Here VALUE is the CONST_DOUBLE rtx itself.
-
- `G' is a floating-point zero. */
-
-#define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \
- ((C) == 'G' ? ((VALUE) == CONST0_RTX (DFmode) \
- || (VALUE) == CONST0_RTX (SFmode)) \
- : 0)
-
-/* Optional extra constraints for this machine.
-
- For the VAX, `Q' means that OP is a MEM that does not have a mode-dependent
- address. */
-
-#define EXTRA_CONSTRAINT(OP, C) \
- ((C) == 'Q' \
- ? MEM_P (OP) && ! mode_dependent_address_p (XEXP (OP, 0)) \
- : 0)
-
-/* Given an rtx X being reloaded into a reg required to be
- in class CLASS, return the class of reg to actually use.
- In general this is just CLASS; but on some machines
- in some cases it is preferable to use a more restrictive class. */
-
-#define PREFERRED_RELOAD_CLASS(X,CLASS) (CLASS)
-
-/* Return the maximum number of consecutive registers
- needed to represent mode MODE in a register of class CLASS. */
-/* On the VAX, this is always the size of MODE in words,
- since all registers are the same size. */
-#define CLASS_MAX_NREGS(CLASS, MODE) \
- ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
\f
/* Stack layout; function entry, exit and calling. */
/* Define this if pushing a word on the stack
makes the stack pointer a smaller address. */
-#define STACK_GROWS_DOWNWARD
+#define STACK_GROWS_DOWNWARD 1
/* Define this to nonzero if the nominal address of the stack frame
is at the high-address end of the local variables;
goes at a more negative offset in the frame. */
#define FRAME_GROWS_DOWNWARD 1
-/* Offset within stack frame to start allocating local variables at.
- If FRAME_GROWS_DOWNWARD, this is the offset to the END of the
- first local allocated. Otherwise, it is the offset to the BEGINNING
- of the first local allocated. */
-#define STARTING_FRAME_OFFSET 0
-
/* Given an rtx for the address of a frame,
return an rtx for the address of the word in the frame
that holds the dynamic chain--the previous frame's address. */
-#define DYNAMIC_CHAIN_ADDRESS(FRAME) plus_constant ((FRAME), 12)
+#define DYNAMIC_CHAIN_ADDRESS(FRAME) plus_constant (Pmode, (FRAME), 12)
/* If we generate an insn to push BYTES bytes,
this says how many the stack pointer really advances by.
/* Offset of first parameter from the argument pointer register value. */
#define FIRST_PARM_OFFSET(FNDECL) 4
-/* Value is the number of bytes of arguments automatically
- popped when returning from a subroutine call.
- FUNDECL is the declaration node of the function (as a tree),
- FUNTYPE is the data type of the function (as a tree),
- or for a library call it is an identifier node for the subroutine name.
- SIZE is the number of bytes of arguments passed on the stack.
-
- On the VAX, the RET insn pops a maximum of 255 args for any function. */
-
-#define RETURN_POPS_ARGS(FUNDECL,FUNTYPE,SIZE) \
- ((SIZE) > 255 * 4 ? 0 : (SIZE))
-
/* Define how to find the value returned by a function.
VALTYPE is the data type of the value (as a tree).
If the precise function being called is known, FUNC is its FUNCTION_DECL;
/* 1 if N is a possible register number for function argument passing.
On the VAX, no registers are used in this way. */
-#define FUNCTION_ARG_REGNO_P(N) 0
+#define FUNCTION_ARG_REGNO_P(N) ((void) (N), 0)
\f
/* Define a data type for recording info about an argument list
during the scan of that argument list. This data type should
#define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, INDIRECT, N_NAMED_ARGS) \
((CUM) = 0)
-/* 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 FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \
- ((CUM) += ((MODE) != BLKmode \
- ? (GET_MODE_SIZE (MODE) + 3) & ~3 \
- : (int_size_in_bytes (TYPE) + 3) & ~3))
-
-/* Define where to put the arguments to a function.
- Value is zero to push the argument on the stack,
- or a hard register in which to store the argument.
-
- MODE is the argument's machine mode.
- TYPE is the data type of the argument (as a tree).
- This is null for libcalls where that information may
- not be available.
- CUM is a variable of type CUMULATIVE_ARGS which gives info about
- the preceding args and about the function being called.
- NAMED is nonzero if this argument is a named parameter
- (otherwise it is an extra parameter matching an ellipsis). */
-
-/* On the VAX all args are pushed. */
-
-#define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) 0
-
/* Output assembler code to FILE to increment profiler label # LABELNO
for profiling a function entry. */
} \
while (0)
+/* This macro specifies a table of register pairs used to eliminate
+ unneeded registers that point into the stack frame. */
+#define ELIMINABLE_REGS {{FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}}
+
+/* On the VAX, FRAME_POINTER_REQUIRED is always 1, so the definition of this
+ macro doesn't matter for register eliminations, but it should still
+ give realistic data for rtx_addr_can_trap_p. */
+#define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
+ ((OFFSET) = get_frame_size ())
+
/* EXIT_IGNORE_STACK should be nonzero if, when returning from a function,
the stack pointer does not matter. The value is tested only in
functions that have frame pointers.
#define EXIT_IGNORE_STACK 1
-/* Store in the variable DEPTH the initial difference between the
- frame pointer reg contents and the stack pointer reg contents,
- as of the start of the function body. This depends on the layout
- of the fixed parts of the stack frame and on how registers are saved.
-
- On the VAX, FRAME_POINTER_REQUIRED is always 1, so the definition of this
- macro doesn't matter. But it must be defined. */
-
-#define INITIAL_FRAME_POINTER_OFFSET(DEPTH) (DEPTH) = 0;
-
-/* Output assembler code for a block containing the constant parts
- of a trampoline, leaving space for the variable parts. */
-
-/* On the VAX, the trampoline contains an entry mask and two instructions:
- .word NN
- movl $STATIC,r0 (store the functions static chain)
- jmp *$FUNCTION (jump to function code at address FUNCTION) */
-
-#define TRAMPOLINE_TEMPLATE(FILE) \
-{ \
- assemble_aligned_integer (2, const0_rtx); \
- assemble_aligned_integer (2, GEN_INT (0x8fd0)); \
- assemble_aligned_integer (4, const0_rtx); \
- assemble_aligned_integer (1, GEN_INT (0x50 + STATIC_CHAIN_REGNUM)); \
- assemble_aligned_integer (2, GEN_INT (0x9f17)); \
- assemble_aligned_integer (4, const0_rtx); \
-}
-
/* Length in units of the trampoline for entering a nested function. */
#define TRAMPOLINE_SIZE 15
-/* Emit RTL insns to initialize the variable parts of a trampoline.
- FNADDR is an RTX for the address of the function's pure code.
- CXT is an RTX for the static chain value for the function. */
-
-/* We copy the register-mask from the function's pure code
- to the start of the trampoline. */
-#define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT) \
-{ \
- emit_move_insn (gen_rtx_MEM (HImode, TRAMP), \
- gen_rtx_MEM (HImode, FNADDR)); \
- emit_move_insn (gen_rtx_MEM (SImode, plus_constant (TRAMP, 4)), CXT); \
- emit_move_insn (gen_rtx_MEM (SImode, plus_constant (TRAMP, 11)), \
- plus_constant (FNADDR, 2)); \
- emit_insn (gen_sync_istream ()); \
-}
-
/* Byte offset of return address in a stack frame. The "saved PC" field
is in element [4] when treating the frame as an array of longwords. */
#define RETURN_ADDR_RTX(COUNT, FRAME) \
((COUNT == 0) \
- ? gen_rtx_MEM (Pmode, plus_constant (FRAME, RETURN_ADDRESS_OFFSET)) \
+ ? gen_rtx_MEM (Pmode, plus_constant (Pmode, FRAME, \
+ RETURN_ADDRESS_OFFSET)) \
: (rtx) 0)
\f
They give nonzero only if REGNO is a hard reg of the suitable class
or a pseudo reg currently allocated to a suitable hard reg.
Since they use reg_renumber, they are safe only once reg_renumber
- has been allocated, which happens in local-alloc.c. */
+ has been allocated, which happens in reginfo.c during register
+ allocation. */
#define REGNO_OK_FOR_INDEX_P(regno) \
((regno) < FIRST_PSEUDO_REGISTER || reg_renumber[regno] >= 0)
#define CONSTANT_ADDRESS_P(X) legitimate_constant_address_p (X)
-/* 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) legitimate_constant_p (X)
-
/* The macros REG_OK_FOR..._P assume that the arg is a REG rtx
and check its validity for a certain class.
We have two alternate definitions for each of them.
or if it is a pseudo reg. */
#define REG_OK_FOR_BASE_P(X) 1
-/* GO_IF_LEGITIMATE_ADDRESS recognizes an RTL expression
- that is a valid memory address for an instruction. */
-#define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR) \
- { if (legitimate_address_p ((MODE), (X), 0)) goto ADDR; }
-
#else
/* Nonzero if X is a hard reg that can be used as an index. */
/* Nonzero if X is a hard reg that can be used as a base reg. */
#define REG_OK_FOR_BASE_P(X) REGNO_OK_FOR_BASE_P (REGNO (X))
-/* GO_IF_LEGITIMATE_ADDRESS recognizes an RTL expression
- that is a valid memory address for an instruction. */
-#define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR) \
- { if (legitimate_address_p ((MODE), (X), 1)) goto ADDR; }
-
#endif
-
-/* Go to LABEL if ADDR (a legitimate address expression)
- has an effect that depends on the machine mode it is used for. */
-#define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR, LABEL) \
- { if (vax_mode_dependent_address_p (ADDR)) goto LABEL; }
\f
/* Specify the machine mode that this machine uses
for the index in the tablejump instruction. */
/* Define this as 1 if `char' should by default be signed; else as 0. */
#define DEFAULT_SIGNED_CHAR 1
-/* This flag, if defined, says the same insns that convert to a signed fixnum
- also convert validly to an unsigned one. */
-#define FIXUNS_TRUNC_LIKE_FIX_TRUNC
-
/* Max number of bytes we can move from memory to memory
in one reasonably fast instruction. */
#define MOVE_MAX 8
+/* If a memory-to-memory move would take MOVE_RATIO or more simple
+ move-instruction pairs, we will do a cpymem or libcall instead. */
+#define MOVE_RATIO(speed) ((speed) ? 6 : 3)
+#define CLEAR_RATIO(speed) ((speed) ? 6 : 2)
+
/* Nonzero if access to memory by bytes is slow and undesirable. */
#define SLOW_BYTE_ACCESS 0
of a shift count. */
/* #define SHIFT_COUNT_TRUNCATED */
-/* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits
- is done just by pretending it is already truncated. */
-#define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
-
/* Specify the machine mode that pointers have.
After generation of rtl, the compiler makes no further distinction
between pointers and any other objects of this machine mode. */
so give the MEM rtx a byte's mode. */
#define FUNCTION_MODE QImode
-/* This machine doesn't use IEEE floats. */
-
-#define TARGET_FLOAT_FORMAT VAX_FLOAT_FORMAT
-
/* Specify the cost of a branch insn; roughly the number of extra insns that
should be added to avoid a branch.
Branches are extremely cheap on the VAX while the shift insns often
used to replace branches can be expensive. */
-#define BRANCH_COST 0
+#define BRANCH_COST(speed_p, predictable_p) 0
\f
/* Tell final.c how to eliminate redundant test instructions. */
assemble_name ((FILE), (NAME)), \
fprintf ((FILE), ",%u\n", (int)(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)))
-
/* Print an instruction operand X on file FILE.
CODE is the code from the %-spec that requested printing this operand;
if `%z3' was used to print operand 3, then CODE is 'z'.
VAX operand formatting codes:
letter print
+ c direct branch condition
C reverse branch condition
D 64-bit immediate operand
B the low 8 bits of the complement of a constant operand
# define NEG_HWI_PRINT_HEX16 "0xffffffff%08lx"
#endif
-#define PRINT_OPERAND_PUNCT_VALID_P(CODE) \
+#define PRINT_OPERAND_PUNCT_VALID_P(CODE) \
((CODE) == '#' || (CODE) == '|')
-#define PRINT_OPERAND(FILE, X, CODE) \
-{ if (CODE == '#') fputc (ASM_DOUBLE_CHAR, FILE); \
- else if (CODE == '|') \
- fputs (REGISTER_PREFIX, FILE); \
- else if (CODE == 'C') \
- fputs (rev_cond_name (X), FILE); \
- else if (CODE == 'D' && GET_CODE (X) == CONST_INT && INTVAL (X) < 0) \
- fprintf (FILE, "$" NEG_HWI_PRINT_HEX16, INTVAL (X)); \
- else if (CODE == 'P' && GET_CODE (X) == CONST_INT) \
- fprintf (FILE, "$" HOST_WIDE_INT_PRINT_DEC, INTVAL (X) + 1); \
- else if (CODE == 'N' && GET_CODE (X) == CONST_INT) \
- fprintf (FILE, "$" HOST_WIDE_INT_PRINT_DEC, ~ INTVAL (X)); \
- /* rotl instruction cannot deal with negative arguments. */ \
- else if (CODE == 'R' && GET_CODE (X) == CONST_INT) \
- fprintf (FILE, "$" HOST_WIDE_INT_PRINT_DEC, 32 - INTVAL (X)); \
- else if (CODE == 'H' && GET_CODE (X) == CONST_INT) \
- fprintf (FILE, "$%d", (int) (0xffff & ~ INTVAL (X))); \
- else if (CODE == 'h' && GET_CODE (X) == CONST_INT) \
- fprintf (FILE, "$%d", (short) - INTVAL (x)); \
- else if (CODE == 'B' && GET_CODE (X) == CONST_INT) \
- fprintf (FILE, "$%d", (int) (0xff & ~ INTVAL (X))); \
- else if (CODE == 'b' && GET_CODE (X) == CONST_INT) \
- fprintf (FILE, "$%d", (int) (0xff & - INTVAL (X))); \
- else if (CODE == 'M' && GET_CODE (X) == CONST_INT) \
- fprintf (FILE, "$%d", ~((1 << INTVAL (x)) - 1)); \
- else if (REG_P (X)) \
- fprintf (FILE, "%s", reg_names[REGNO (X)]); \
- else if (MEM_P (X)) \
- output_address (XEXP (X, 0)); \
- else if (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) == SFmode) \
- { char dstr[30]; \
- real_to_decimal (dstr, CONST_DOUBLE_REAL_VALUE (X), \
- sizeof (dstr), 0, 1); \
- fprintf (FILE, "$0f%s", dstr); } \
- else if (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) == DFmode) \
- { char dstr[30]; \
- real_to_decimal (dstr, CONST_DOUBLE_REAL_VALUE (X), \
- sizeof (dstr), 0, 1); \
- fprintf (FILE, "$0%c%s", ASM_DOUBLE_CHAR, dstr); } \
- else { putc ('$', FILE); output_addr_const (FILE, X); }}
+#define PRINT_OPERAND(FILE, X, CODE) \
+ print_operand (FILE, X, CODE)
/* Print a memory operand whose address is X, on file FILE.
This uses a function in output-vax.c. */
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