122 lines
3.7 KiB
C
122 lines
3.7 KiB
C
|
/* Definitions for Unix assembler syntax for the Intel 80386.
|
|||
|
|
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 2, 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. */
|
|||
|
|
|
|||
|
|
/* This file defines the aspects of assembler syntax
|
|||
|
|
that are the same for all the i386 Unix systems
|
|||
|
|
(though they may differ in non-Unix systems). */
|
|||
|
|
|
|||
|
|
/* 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. */
|
|||
|
|
|
|||
|
|
/* Note that the other files fail to use these
|
|||
|
|
in some of the places where they should. */
|
|||
|
|
|
|||
|
|
#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 "$"
|
|||
|
|
|
|||
|
|
/* 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. */
|
|||
|
|
|
|||
|
|
/* String containing the assembler's comment-starter. */
|
|||
|
|
|
|||
|
|
#define ASM_COMMENT_START "/"
|
|||
|
|
#define COMMENT_BEGIN "/"
|
|||
|
|
|
|||
|
|
/* 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"
|
|||
|
|
|
|||
|
|
/* Output before read-only data. */
|
|||
|
|
|
|||
|
|
#define TEXT_SECTION_ASM_OP ".text"
|
|||
|
|
|
|||
|
|
/* Output before writable (initialized) data. */
|
|||
|
|
|
|||
|
|
#define DATA_SECTION_ASM_OP ".data"
|
|||
|
|
|
|||
|
|
/* Output before writable (uninitialized) data. */
|
|||
|
|
|
|||
|
|
#define BSS_SECTION_ASM_OP ".bss"
|
|||
|
|
|
|||
|
|
/* 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))
|