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/* Definitions for AT&T 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 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. */
#define TARGET_VERSION fprintf (stderr, " (80386, ATT syntax)");
/* Define the syntax of instructions and addresses. */
/* 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.value "
#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. */
/* The .file command should always begin the output. */
#undef ASM_FILE_START
#define ASM_FILE_START(FILE) \
do { sdbout_filename ((FILE), main_input_filename); \
if (optimize) ASM_FILE_START_1 (FILE); \
} while (0)
#define ASM_FILE_START_1(FILE) fprintf (FILE, "\t.optim\n")
/* 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"
/* 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", 1<<(LOG))
/* This is how to output an assembler line
that says to advance the location counter by SIZE bytes. */
/* The `space' pseudo in the text segment outputs nop insns rather than 0s,
so we must output 0s explicitly in the text segment. */
#define ASM_OUTPUT_SKIP(FILE,SIZE) \
if (in_text_section ()) \
{ \
int i; \
for (i = 0; i < (SIZE) - 20; i += 20) \
fprintf (FILE, "\t.byte 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0\n"); \
if (i < (SIZE)) \
{ \
fprintf (FILE, "\t.byte 0"); \
i++; \
for (; i < (SIZE); i++) \
fprintf (FILE, ",0"); \
fprintf (FILE, "\n"); \
} \
} \
else \
fprintf ((FILE), "\t.set .,.+%u\n", (SIZE))
/* Output before read-only data. */
#define TEXT_SECTION_ASM_OP ".text"
/* Output before writable data. */
#define DATA_SECTION_ASM_OP ".data"
/* Output before uninitialized data. */
#define BSS_SECTION_ASM_OP ".bss"
#define EXTRA_SECTIONS in_bss
#define EXTRA_SECTION_FUNCTIONS \
void \
bss_section () \
{ \
if (in_section != in_bss) \
{ \
fprintf (asm_out_file, "%s\n", BSS_SECTION_ASM_OP); \
in_section = in_bss; \
} \
}
/* Define the syntax of labels and symbol definitions/declarations. */
/* This says how to output an assembler line
to define a global common symbol. */
/* We don't use ROUNDED because the standard compiler doesn't,
and the linker gives error messages if a common symbol
has more than one length value. */
#define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED) \
( fputs (".comm ", (FILE)), \
assemble_name ((FILE), (NAME)), \
fprintf ((FILE), ",%u\n", (SIZE)))
/* This says how to output an assembler line
to define a local common symbol. */
/* Note that using bss_section here caused errors
in building shared libraries on system V.3. */
#define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED) \
do { \
int align = exact_log2 (ROUNDED); \
if (align > 2) align = 2; \
data_section (); \
ASM_OUTPUT_ALIGN ((FILE), align == -1 ? 2 : align); \
ASM_OUTPUT_LABEL ((FILE), (NAME)); \
fprintf ((FILE), "\t.set .,.+%u\n", (ROUNDED)); \
} while (0)
/* 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 a reference to a user-level label named NAME. */
#define ASM_OUTPUT_LABELREF(FILE,NAME) \
fprintf (FILE, "%s", NAME)
/* 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 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))
/* How to output an ASCII string constant. */
#define ASM_OUTPUT_ASCII(FILE, p, size) \
{ int i=0; \
while (i < size) \
{ if (i%10 == 0) { if (i!=0) fprintf (FILE, "\n"); \
fprintf (FILE, ASM_BYTE); } \
else fprintf (FILE, ","); \
fprintf (FILE, "0x%x",(p[i++] & 0377)) ;} \
fprintf (FILE, "\n"); }
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