136 lines
5.0 KiB
C
136 lines
5.0 KiB
C
/* Definitions for Unix assembler syntax for the Intel 80386.
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Copyright (C) 1988, 1994, 1999, 2000, 2001 Free Software Foundation, Inc.
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This file is part of GNU CC.
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GNU CC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU CC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* This file defines the aspects of assembler syntax
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that are the same for all the i386 Unix systems
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(though they may differ in non-Unix systems). */
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#define DEFAULT_ASSEMBLER_DIALECT 0
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/* Define macro used to output shift-double opcodes when the shift
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count is in %cl. Some assemblers require %cl as an argument;
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some don't. This macro controls what to do: by default, don't
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print %cl. */
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#define SHIFT_DOUBLE_OMITS_COUNT 1
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/* Define the syntax of pseudo-ops, labels and comments. */
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/* String containing the assembler's comment-starter. */
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#define ASM_COMMENT_START "/"
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/* Output to assembler file text saying following lines
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may contain character constants, extra white space, comments, etc. */
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#define ASM_APP_ON "/APP\n"
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/* Output to assembler file text saying following lines
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no longer contain unusual constructs. */
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#define ASM_APP_OFF "/NO_APP\n"
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/* Output before read-only data. */
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#define TEXT_SECTION_ASM_OP "\t.text"
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/* Output before writable (initialized) data. */
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#define DATA_SECTION_ASM_OP "\t.data"
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/* Output before writable (uninitialized) data. */
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#define BSS_SECTION_ASM_OP "\t.bss"
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/* This is how to output a command to make the user-level label named NAME
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defined for reference from other files. */
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#define ASM_GLOBALIZE_LABEL(FILE,NAME) \
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(fputs (".globl ", FILE), assemble_name (FILE, NAME), fputs ("\n", FILE))
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/* By default, target has a 80387, uses IEEE compatible arithmetic,
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and returns float values in the 387. */
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#define TARGET_SUBTARGET_DEFAULT (MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS)
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/* Floating-point return values come in the FP register. */
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#define VALUE_REGNO(MODE) \
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(GET_MODE_CLASS (MODE) == MODE_FLOAT \
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&& TARGET_FLOAT_RETURNS_IN_80387 ? FIRST_FLOAT_REG \
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: (MODE) == TImode || VECTOR_MODE_P (MODE) ? FIRST_SSE_REG \
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: 0)
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/* Output code to add DELTA to the first argument, and then jump to FUNCTION.
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Used for C++ multiple inheritance. */
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#define ASM_OUTPUT_MI_THUNK(FILE, THUNK_FNDECL, DELTA, FUNCTION) \
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do { \
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tree parm; \
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rtx xops[3]; \
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\
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if (ix86_regparm > 0) \
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parm = TYPE_ARG_TYPES (TREE_TYPE (function)); \
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else \
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parm = NULL_TREE; \
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for (; parm; parm = TREE_CHAIN (parm)) \
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if (TREE_VALUE (parm) == void_type_node) \
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break; \
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\
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xops[0] = GEN_INT (DELTA); \
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if (parm) \
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xops[1] = gen_rtx_REG (SImode, 0); \
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else if (aggregate_value_p (TREE_TYPE (TREE_TYPE (FUNCTION)))) \
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xops[1] = gen_rtx_MEM (SImode, plus_constant (stack_pointer_rtx, 8)); \
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else \
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xops[1] = gen_rtx_MEM (SImode, plus_constant (stack_pointer_rtx, 4)); \
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output_asm_insn ("add{l} {%0, %1|%1, %0}", xops); \
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\
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if (flag_pic && !TARGET_64BIT) \
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{ \
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xops[0] = pic_offset_table_rtx; \
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xops[1] = gen_label_rtx (); \
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xops[2] = gen_rtx_SYMBOL_REF (Pmode, "_GLOBAL_OFFSET_TABLE_"); \
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\
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if (ix86_regparm > 2) \
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abort (); \
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output_asm_insn ("push{l}\t%0", xops); \
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output_asm_insn ("call\t%P1", xops); \
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ASM_OUTPUT_INTERNAL_LABEL (FILE, "L", CODE_LABEL_NUMBER (xops[1])); \
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output_asm_insn ("pop{l}\t%0", xops); \
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output_asm_insn ("add{l}\t{%2+[.-%P1], %0|%0, OFFSET FLAT: %2+[.-%P1]}", xops); \
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xops[0] = gen_rtx_MEM (SImode, XEXP (DECL_RTL (FUNCTION), 0)); \
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output_asm_insn ("mov{l}\t{%0@GOT(%%ebx), %%ecx|%%ecx, %0@GOT[%%ebx]}",\
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xops); \
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asm_fprintf (FILE, "\tpop{l\t%%ebx|\t%%ebx}\n"); \
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asm_fprintf (FILE, "\tjmp\t{*%%ecx|%%ecx}\n"); \
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} \
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else if (flag_pic && TARGET_64BIT) \
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{ \
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fprintf (FILE, "\tjmp *"); \
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assemble_name (FILE, XSTR (XEXP (DECL_RTL (FUNCTION), 0), 0)); \
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fprintf (FILE, "@GOTPCREL(%%rip)\n"); \
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} \
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else \
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{ \
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fprintf (FILE, "\tjmp "); \
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assemble_name (FILE, XSTR (XEXP (DECL_RTL (FUNCTION), 0), 0)); \
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fprintf (FILE, "\n"); \
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} \
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} while (0)
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