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Diffstat (limited to 'gnu/usr.bin/cc/include/i386/unix.h')
-rw-r--r-- | gnu/usr.bin/cc/include/i386/unix.h | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/gnu/usr.bin/cc/include/i386/unix.h b/gnu/usr.bin/cc/include/i386/unix.h new file mode 100644 index 0000000..7209176 --- /dev/null +++ b/gnu/usr.bin/cc/include/i386/unix.h @@ -0,0 +1,145 @@ +/* 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 + +/* Define macro used to output shift-double opcodes when the shift + count is in %cl. Some assemblers require %cl as an argument; + some don't. This macro controls what to do: by default, don't + print %cl. */ +#define AS3_SHIFT_DOUBLE(a,b,c,d) AS2 (a,c,d) + +/* 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 `Q' then CH is `l', unless GAS_MNEMONICS). */ +#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)) + +/* By default, target has a 80387, uses IEEE compatible arithmetic, + and returns float values in the 387, ie, + (TARGET_80387 | TARGET_IEEE_FP | TARGET_FLOAT_RETURNS_IN_80387) */ + +#define TARGET_DEFAULT 0301 + +/* Floating-point return values come in the FP register. */ + +#define VALUE_REGNO(MODE) \ + (GET_MODE_CLASS (MODE) == MODE_FLOAT \ + && TARGET_FLOAT_RETURNS_IN_80387 ? FIRST_FLOAT_REG : 0) + +/* 1 if N is a possible register number for a function value. */ + +#define FUNCTION_VALUE_REGNO_P(N) \ + ((N) == 0 || ((N)== FIRST_FLOAT_REG && TARGET_FLOAT_RETURNS_IN_80387)) + |