/* Definitions of target machine for GNU compiler. VAX version.
Copyright (C) 1987, 1988, 1991, 1993, 1994, 1995, 1996, 1997, 1998,
- 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
+ 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
This file is part of GCC.
/* Run-time compilation parameters selecting different hardware subsets. */
-extern int target_flags;
-
-#define MASK_UNIX_ASM 1
-#define MASK_VAXC_ALIGNMENT 2
-#define MASK_G_FLOAT 4
-
-
-/* Macros used in the machine description to test the flags. */
-
-/* Nonzero if compiling code that Unix assembler can assemble. */
-#define TARGET_UNIX_ASM (target_flags & MASK_UNIX_ASM)
-
-/* Nonzero if compiling with VAX-11 "C" style structure alignment */
-#define TARGET_VAXC_ALIGNMENT (target_flags & MASK_VAXC_ALIGNMENT)
-
-/* Nonzero if compiling with `G'-format floating point */
-#define TARGET_G_FLOAT (target_flags & MASK_G_FLOAT)
-
-/* 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. */
-
-#define TARGET_SWITCHES \
- { {"unix", MASK_UNIX_ASM, \
- "Generate code for UNIX assembler"}, \
- {"gnu", -MASK_UNIX_ASM, \
- "Generate code for GNU assembler (gas)"}, \
- {"vaxc-alignment", MASK_VAXC_ALIGNMENT, \
- "Use VAXC structure conventions"}, \
- {"g", MASK_G_FLOAT, \
- "Generate GFLOAT double precision code"}, \
- {"g-float", MASK_G_FLOAT, \
- "Generate GFLOAT double precision code"}, \
- {"d", -MASK_G_FLOAT, \
- "Generate DFLOAT double precision code"}, \
- {"d-float", -MASK_G_FLOAT, \
- "Generate DFLOAT double precision code"}, \
- { "", TARGET_DEFAULT, 0}}
+/* Nonzero if ELF. Redefined by vax/elf.h. */
+#define TARGET_ELF 0
/* Default target_flags if no switches specified. */
/* Register in which address to store a structure value
is passed to a function. */
-#define STRUCT_VALUE_REGNUM 1
+#define VAX_STRUCT_VALUE_REGNUM 1
\f
/* Define the classes of registers for register constraints in the
machine description. Also define ranges of constants.
On the VAX, the offset starts at 0. */
-#define INIT_CUMULATIVE_ARGS(CUM,FNTYPE,LIBNAME,INDIRECT) \
+#define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, INDIRECT, N_NAMED_ARGS) \
((CUM) = 0)
/* Update the data in CUM to advance over an argument
goto ADDR; \
GO_IF_REG_PLUS_INDEX (XEXP (X, 0), MODE, ADDR); } } }
\f
-/* Try machine-dependent ways of modifying an illegitimate address
- to be legitimate. If we find one, return the new, valid address.
- This macro is used in only one place: `memory_address' in explow.c.
-
- OLDX is the address as it was before break_out_memory_refs was called.
- In some cases it is useful to look at this to decide what needs to be done.
-
- MODE and WIN are passed so that this macro can use
- GO_IF_LEGITIMATE_ADDRESS.
-
- It is always safe for this macro to do nothing. It exists to recognize
- opportunities to optimize the output.
-
- For the VAX, nothing needs to be done. */
-
-#define LEGITIMIZE_ADDRESS(X,OLDX,MODE,WIN) {}
-
/* Go to LABEL if ADDR (a legitimate address expression)
has an effect that depends on the machine mode it is used for.
On the VAX, the predecrement and postincrement address depend thus
Do not define this if the table should contain absolute addresses. */
#define CASE_VECTOR_PC_RELATIVE 1
-/* Define this if the case instruction drops through after the table
- when the index is out of range. Don't define it if the case insn
- jumps to the default label instead. */
-#define CASE_DROPS_THROUGH
-
/* Indicate that jump tables go in the text section. This is
necessary when compiling PIC code. */
#define JUMP_TABLES_IN_TEXT_SECTION 1
is done just by pretending it is already truncated. */
#define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
-/* When a prototype says `char' or `short', really pass an `int'.
- (On the VAX, this is required for system-library compatibility.) */
-#define PROMOTE_PROTOTYPES 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. */
used to replace branches can be expensive. */
#define BRANCH_COST 0
-
-/*
- * We can use the BSD C library routines for the libgcc calls that are
- * still generated, since that's what they boil down to anyways.
- */
-
-#define UDIVSI3_LIBCALL "*udiv"
-#define UMODSI3_LIBCALL "*urem"
\f
/* Tell final.c how to eliminate redundant test instructions. */
Do not alter them if the instruction would not alter the cc's. */
#define NOTICE_UPDATE_CC(EXP, INSN) \
-{ if (GET_CODE (EXP) == SET) \
- { if (GET_CODE (SET_SRC (EXP)) == CALL) \
- CC_STATUS_INIT; \
- else if (GET_CODE (SET_DEST (EXP)) != ZERO_EXTRACT \
- && GET_CODE (SET_DEST (EXP)) != PC) \
- { \
- cc_status.flags = 0; \
- /* The integer operations below don't set carry or \
- set it in an incompatible way. That's ok though \
- as the Z bit is all we need when doing unsigned \
- comparisons on the result of these insns (since \
- they're always with 0). Set CC_NO_OVERFLOW to \
- generate the correct unsigned branches. */ \
- switch (GET_CODE (SET_SRC (EXP))) \
- { \
- case NEG: \
- if (GET_MODE_CLASS (GET_MODE (EXP)) == MODE_FLOAT)\
- break; \
- case AND: \
- case IOR: \
- case XOR: \
- case NOT: \
- case MEM: \
- case REG: \
- cc_status.flags = CC_NO_OVERFLOW; \
- break; \
- default: \
- break; \
- } \
- cc_status.value1 = SET_DEST (EXP); \
- cc_status.value2 = SET_SRC (EXP); } } \
- else if (GET_CODE (EXP) == PARALLEL \
- && GET_CODE (XVECEXP (EXP, 0, 0)) == SET) \
- { \
- if (GET_CODE (SET_SRC (XVECEXP (EXP, 0, 0))) == CALL) \
- CC_STATUS_INIT; \
- else if (GET_CODE (SET_DEST (XVECEXP (EXP, 0, 0))) != PC) \
- { cc_status.flags = 0; \
- cc_status.value1 = SET_DEST (XVECEXP (EXP, 0, 0)); \
- cc_status.value2 = SET_SRC (XVECEXP (EXP, 0, 0)); } \
- else \
- /* PARALLELs whose first element sets the PC are aob, \
- sob insns. They do change the cc's. */ \
- CC_STATUS_INIT; } \
- else CC_STATUS_INIT; \
- if (cc_status.value1 && GET_CODE (cc_status.value1) == REG \
- && cc_status.value2 \
- && reg_overlap_mentioned_p (cc_status.value1, cc_status.value2)) \
- cc_status.value2 = 0; \
- if (cc_status.value1 && GET_CODE (cc_status.value1) == MEM \
- && cc_status.value2 \
- && GET_CODE (cc_status.value2) == MEM) \
- cc_status.value2 = 0; }
-/* Actual condition, one line up, should be that value2's address
- depends on value1, but that is too much of a pain. */
+ vax_notice_update_cc ((EXP), (INSN))
#define OUTPUT_JUMP(NORMAL, FLOAT, NO_OV) \
{ if (cc_status.flags & CC_NO_OVERFLOW) \
\f
/* Control the assembler format that we output. */
+/* A C string constant describing how to begin a comment in the target
+ assembler language. The compiler assumes that the comment will end at
+ the end of the line. */
+
+#define ASM_COMMENT_START "#"
+
/* Output to assembler file text saying following lines
may contain character constants, extra white space, comments, etc. */
/* The purpose of D is to get around a quirk or bug in VAX assembler
whereby -1 in a 64-bit immediate operand means 0x00000000ffffffff,
- which is not a 64-bit minus one. */
+ which is not a 64-bit minus one. As a workaround, we output negative
+ values in hex. */
+#if HOST_BITS_PER_WIDE_INT == 64
+# define NEG_HWI_PRINT_HEX16 HOST_WIDE_INT_PRINT_HEX
+#else
+# define NEG_HWI_PRINT_HEX16 "0xffffffff%08lx"
+#endif
#define PRINT_OPERAND_PUNCT_VALID_P(CODE) \
((CODE) == '#' || (CODE) == '|')
else if (CODE == 'C') \
fputs (rev_cond_name (X), FILE); \
else if (CODE == 'D' && GET_CODE (X) == CONST_INT && INTVAL (X) < 0) \
- fprintf (FILE, "$0xffffffff%08x", INTVAL (X)); \
+ fprintf (FILE, "$" 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) \
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