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- /* Definitions for BSD assembler syntax for Intel 386
- (actually AT&T syntax for insns and operands,
- adapted to BSD conventions for symbol names and debugging.)
- Copyright (C) 1988 Free Software Foundation, Inc.
-
- This file is part of GNU CC.
-
- GNU CC 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 1, or (at your option)
- any later version.
-
- GNU CC is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with GNU CC; see the file COPYING. If not, write to
- the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- /* Use the Sequent Symmetry assembler syntax. */
-
- #define TARGET_VERSION fprintf (stderr, " (80386, BSD syntax)");
-
- /* Define some concatenation macros to concatenate an opcode
- and one, two or three operands. In other assembler syntaxes
- they may alter the order of ther operands. */
-
- #ifdef __STDC__
- #define AS2(a,b,c) #a " " #b "," #c
- #define AS3(a,b,c,d) #a " " #b "," #c "," #d
- #define AS1(a,b) #a " " #b
- #else
- #define AS1(a,b) "a b"
- #define AS2(a,b,c) "a b,c"
- #define AS3(a,b,c,d) "a b,c,d"
- #endif
-
- /* Output the size-letter for an opcode.
- CODE is the letter used in an operand spec (L, B, W, S or Q).
- CH is the corresponding lower case letter
- (except if CODE is L then CH is `l'). */
- #define PUT_OP_SIZE(CODE,CH,FILE) putc (CH,(FILE))
-
- /* Opcode suffix for fullword insn. */
- #define L_SIZE "l"
-
- /* Prefix for register names in this syntax. */
- #define RP "%"
-
- /* Prefix for immediate operands in this syntax. */
- #define IP "$"
-
- /* Prefix for internally generated assembler labels. */
- #define LPREFIX "L"
-
- /* Output the prefix for an immediate operand, or for an offset operand. */
- #define PRINT_IMMED_PREFIX(FILE) fputs ("$", (FILE))
- #define PRINT_OFFSET_PREFIX(FILE) fputs ("$", (FILE))
-
- /* Indirect call instructions should use `*'. */
- #define USE_STAR 1
-
- /* Prefix for a memory-operand X. */
- #define PRINT_PTR(X, FILE)
-
- /* Delimiters that surround base reg and index reg. */
- #define ADDR_BEG(FILE) putc('(', (FILE))
- #define ADDR_END(FILE) putc(')', (FILE))
-
- /* Print an index register (whose rtx is IREG). */
- #define PRINT_IREG(FILE,IREG) \
- do \
- { fputs (",", (FILE)); PRINT_REG ((IREG), 0, (FILE)); } \
- while (0)
-
- /* Print an index scale factor SCALE. */
- #define PRINT_SCALE(FILE,SCALE) \
- if ((SCALE) != 1) fprintf ((FILE), ",%d", (SCALE))
-
- /* Print a base/index combination.
- BREG is the base reg rtx, IREG is the index reg rtx,
- and SCALE is the index scale factor (an integer). */
-
- #define PRINT_B_I_S(BREG,IREG,SCALE,FILE) \
- { ADDR_BEG (FILE); \
- if (BREG) PRINT_REG ((BREG), 0, (FILE)); \
- if ((IREG) != 0) \
- { PRINT_IREG ((FILE), (IREG)); \
- PRINT_SCALE ((FILE), (SCALE)); } \
- ADDR_END (FILE); }
-
- /* Define the syntax of pseudo-ops, labels and comments. */
-
- /* Assembler pseudos to introduce constants of various size. */
-
- #define ASM_BYTE "\t.byte "
- #define ASM_SHORT "\t.word "
- #define ASM_LONG "\t.long "
- #define ASM_DOUBLE "\t.double "
-
- /* String containing the assembler's comment-starter. */
-
- #define COMMENT_BEGIN "/"
-
- /* Output at beginning of assembler file.
- ??? I am skeptical of this -- RMS. */
-
- #define ASM_FILE_START(FILE) \
- fprintf (FILE, "\t.file\t\"%s\"\n", dump_base_name);
-
- /* This was suggested, but it shouldn't be right for DBX output. -- RMS
- #define ASM_OUTPUT_SOURCE_FILENAME(FILE, NAME) */
-
- /* Output to assembler file text saying following lines
- may contain character constants, extra white space, comments, etc. */
-
- #define ASM_APP_ON "/APP\n"
-
- /* Output to assembler file text saying following lines
- no longer contain unusual constructs. */
-
- #define ASM_APP_OFF "/NO_APP\n"
-
- /* Define the syntax of labels and symbol definitions/declarations. */
-
- /* This is how to output an assembler line
- that says to advance the location counter by SIZE bytes. */
-
- #define ASM_OUTPUT_SKIP(FILE,SIZE) \
- fprintf (FILE, "\t.space %d\n", (SIZE))
-
- /* Output before read-only data. */
-
- #define TEXT_SECTION_ASM_OP ".text"
-
- /* Output before writable data. */
-
- #define DATA_SECTION_ASM_OP ".data"
-
- /* Define the syntax of labels and symbol definitions/declarations. */
-
- /* This says how to output an assembler line
- to define a global common symbol. */
-
- #define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED) \
- ( fputs (".comm ", (FILE)), \
- assemble_name ((FILE), (NAME)), \
- fprintf ((FILE), ",%d\n", (SIZE)))
-
- /* This says how to output an assembler line
- to define a local common symbol. */
-
- #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED) \
- ( fputs (".lcomm ", (FILE)), \
- assemble_name ((FILE), (NAME)), \
- fprintf ((FILE), ",%d\n", (SIZE)))
-
- /* This is how to output an assembler line
- that says to advance the location counter
- to a multiple of 2**LOG bytes. */
-
- #define ASM_OUTPUT_ALIGN(FILE,LOG) \
- if ((LOG)!=0) fprintf ((FILE), "\t.align %d\n", (LOG))
-
- /* This is how to store into the string BUF
- the symbol_ref name of an internal numbered label where
- PREFIX is the class of label and NUM is the number within the class.
- This is suitable for output with `assemble_name'. */
-
- #define ASM_GENERATE_INTERNAL_LABEL(BUF,PREFIX,NUMBER) \
- sprintf ((BUF), "*%s%d", (PREFIX), (NUMBER))
-
- /* 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 output a reference to a user-level label named NAME. */
-
- #define ASM_OUTPUT_LABELREF(FILE,NAME) \
- fprintf (FILE, "_%s", NAME)
-
- /* Sequent has some changes in the format of DBX symbols. */
- #define DBX_NO_XREFS 1
-
- /* Don't split DBX symbols into continuations. */
- #define DBX_CONTIN_LENGTH 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) \
- (fputs (".globl ", FILE), assemble_name (FILE, NAME), fputs ("\n", FILE))
-
- /* This is how to output an assembler line defining a `double' constant. */
-
- #undef ASM_OUTPUT_DOUBLE
- #define ASM_OUTPUT_DOUBLE(FILE,VALUE) \
- fprintf (FILE, "\t.double 0d%.20e\n", (VALUE))
-