Michael Meissner
parent
9e19701e69
commit
890e2acfe6
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/* Core target definitions for GNU compiler
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for IBM RS/6000 PowerPC running NetWare
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Copyright (C) 1994 Free Software Foundation, Inc.
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Contributed by Cygnus Support.
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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, 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include "rs6000/powerpc.h"
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/* Don't generate XCOFF debugging information. */
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#undef XCOFF_DEBUGGING_INFO
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/* Don't use the COFF object file format. */
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#undef OBJECT_FORMAT_COFF
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/* The XCOFF support uses weird symbol suffixes, which we don't want
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for ELF. */
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#undef RS6000_OUTPUT_BASENAME
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#define RS6000_OUTPUT_BASENAME(FILE, NAME) assemble_name (FILE, NAME)
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/* Don't bother to output .extern pseudo-ops. They are not needed by
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ELF assemblers. */
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#undef ASM_OUTPUT_EXTERNAL
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/* Undefine some things which are defined by the generic svr4.h. */
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#undef ASM_FILE_END
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#undef ASM_OUTPUT_EXTERNAL_LIBCALL
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#undef READONLY_DATA_SECTION
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#undef SELECT_SECTION
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#undef ASM_DECLARE_FUNCTION_NAME
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/* Use the regular svr4 definitions. */
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#include "svr4.h"
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#include "netware.h"
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/* Create a function descriptor when we declare a function name. This
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is a mixture of the ASM_DECLARE_FUNCTION_NAME macros in rs6000.h
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and svr4.h. The unmodified function name is used to name the
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descriptor. The function name with an initial `.' is used to name
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the code. */
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#undef ASM_DECLARE_FUNCTION_NAME
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#define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
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do { \
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fprintf (FILE, "\t%s\t ", TYPE_ASM_OP); \
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assemble_name (FILE, NAME); \
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putc (',', FILE); \
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fprintf (FILE, TYPE_OPERAND_FMT, "function"); \
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putc ('\n', FILE); \
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ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL)); \
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if (TREE_PUBLIC (DECL)) \
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{ \
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fprintf (FILE, "\t.globl ."); \
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assemble_name (FILE, NAME); \
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fprintf (FILE, "\n"); \
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} \
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data_section (); \
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ASM_OUTPUT_ALIGN (FILE, 2); \
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ASM_OUTPUT_LABEL (FILE, NAME); \
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fprintf (FILE, "\t.long ."); \
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assemble_name (FILE, NAME); \
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fprintf (FILE, ", __GOT0, 0\n"); \
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text_section (); \
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fprintf (FILE, "."); \
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ASM_OUTPUT_LABEL (FILE, NAME); \
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} while (0)
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/* We need to override the .size output in order to put a `.' before
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the function name. */
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#undef ASM_DECLARE_FUNCTION_SIZE
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#define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \
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do { \
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if (!flag_inhibit_size_directive) \
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{ \
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char label[256]; \
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static int labelno; \
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labelno++; \
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ASM_GENERATE_INTERNAL_LABEL (label, "Lfe", labelno); \
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ASM_OUTPUT_INTERNAL_LABEL (FILE, "Lfe", labelno); \
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fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \
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assemble_name (FILE, (FNAME)); \
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fprintf (FILE, ","); \
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assemble_name (FILE, label); \
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fprintf (FILE, "-."); \
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assemble_name (FILE, (FNAME)); \
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putc ('\n', FILE); \
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} \
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} while (0)
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/* Use ELF style section commands. */
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#undef TEXT_SECTION_ASM_OP
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#define TEXT_SECTION_ASM_OP "\t.section\t\".text\""
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#undef DATA_SECTION_ASM_OP
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#define DATA_SECTION_ASM_OP "\t.section\t\".data\""
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/* Besides the usual ELF sections, we need a toc section. */
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#undef EXTRA_SECTIONS
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#define EXTRA_SECTIONS in_const, in_ctors, in_dtors, in_toc
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#undef EXTRA_SECTION_FUNCTIONS
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#define EXTRA_SECTION_FUNCTIONS \
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CONST_SECTION_FUNCTION \
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CTORS_SECTION_FUNCTION \
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DTORS_SECTION_FUNCTION \
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TOC_SECTION_FUNCTION
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#define TOC_SECTION_FUNCTION \
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void \
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toc_section () \
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{ \
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if (TARGET_MINIMAL_TOC) \
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{ \
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static int toc_initialized = 0; \
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\
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if (! toc_initialized) \
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{ \
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fprintf (asm_out_file, "%s\n", TOC_SECTION_ASM_OP); \
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fprintf (asm_out_file, ".LCTOC0:\n"); \
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fprintf (asm_out_file, "\t.tc .LCTOC1\n"); \
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fprintf (asm_out_file, "%s\n", MINIMAL_TOC_SECTION_ASM_OP); \
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fprintf (asm_out_file, ".LCTOC1:\n"); \
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toc_initialized = 1; \
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} \
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} \
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\
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if (in_section != in_toc) \
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{ \
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fprintf (asm_out_file, "%s\n", \
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(TARGET_MINIMAL_TOC \
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? MINIMAL_TOC_SECTION_ASM_OP \
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: TOC_SECTION_ASM_OP)); \
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in_section = in_toc; \
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} \
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}
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#define TOC_SECTION_ASM_OP "\t.section\t.got,\"aw\""
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#define MINIMAL_TOC_SECTION_ASM_OP "\t.section\t.got1,\"aw\""
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/* Use the TOC section for TOC entries. */
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#undef SELECT_RTX_SECTION
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#define SELECT_RTX_SECTION(MODE, X) \
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{ if (ASM_OUTPUT_SPECIAL_POOL_ENTRY_P (X)) \
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toc_section (); \
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else \
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const_section (); \
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}
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/* How to renumber registers for dbx and gdb. */
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#define DBX_REGISTER_NUMBER(REGNO) (REGNO)
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/* svr4.h overrides ASM_OUTPUT_INTERNAL_LABEL. */
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#undef ASM_OUTPUT_INTERNAL_LABEL_PREFIX
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#define ASM_OUTPUT_INTERNAL_LABEL_PREFIX(FILE,PREFIX) \
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fprintf (FILE, ".%s", PREFIX)
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/* Pass -m601 to the assembler, since that is what powerpc.h currently
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implies. */
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#undef ASM_SPEC
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#define ASM_SPEC \
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"-u -m601 %{V} %{v:%{!V:-V}} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*}"
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/* This is the end of what might become sysv4.h. */
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/* Enable output of DBX (stabs) debugging information when asked for it. */
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#define DBX_DEBUGGING_INFO
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/* Prefer DBX (stabs) debugging information over the native (DWARF) format. */
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#undef PREFERRED_DEBUGGING_TYPE
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#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
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/* Line numbers are relative to the current function. */
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#undef ASM_OUTPUT_SOURCE_LINE
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#define ASM_OUTPUT_SOURCE_LINE(file, line) \
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{ static int sym_lineno = 1; \
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fprintf (file, ".stabn 68,0,%d,.LM%d-.%s\n.LM%d:\n",\
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line, sym_lineno, \
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XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0), \
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sym_lineno); \
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sym_lineno += 1; }
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/* But, to make this work, we have to output the stabs for the function
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name *first*... */
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#define DBX_FUNCTION_FIRST
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/* We need to output LBRAC and RBRAC lines specially to include the
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dot in from of the text symbol for a function. */
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#define DBX_OUTPUT_LBRAC(FILE, BUF) \
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do \
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{ \
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fprintf (FILE, "%s %d,0,0,", ASM_STABN_OP, N_LBRAC); \
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assemble_name (FILE, BUF); \
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fprintf (FILE, "-."); \
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assemble_name (asmfile, \
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XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0)); \
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fprintf (asmfile, "\n"); \
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} \
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while (0)
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#define DBX_OUTPUT_RBRAC(FILE, BUF) \
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do \
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{ \
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fprintf (FILE, "%s %d,0,0,", ASM_STABN_OP, N_RBRAC); \
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assemble_name (FILE, BUF); \
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fprintf (FILE, "-."); \
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assemble_name (asmfile, \
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XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0)); \
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fprintf (asmfile, "\n"); \
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} \
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while (0)
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/* We are using function descriptors, so the value of a function
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symbol is in the .data section. However, we want the stabs entry
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for that function to point at the actual function code in the .text
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section, which we get by prefixing the symbol with a dot. */
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#define DBX_FINISH_SYMBOL(sym) \
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do { \
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int line = 0; \
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if (use_gnu_debug_info_extensions && sym != 0) \
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line = DECL_SOURCE_LINE (sym); \
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\
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fprintf (asmfile, "\",%d,0,%d,", current_sym_code, line); \
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if (current_sym_addr) \
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{ \
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if (TREE_CODE (sym) == FUNCTION_DECL) \
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fprintf (asmfile, "."); \
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output_addr_const (asmfile, current_sym_addr); \
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} \
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else \
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fprintf (asmfile, "%d", current_sym_value); \
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putc ('\n', asmfile); \
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} while (0)
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/* This is the end of what might become sysv4dbx.h. */
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#undef TARGET_VERSION
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#define TARGET_VERSION fprintf (stderr, " (PowerPC Netware)");
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/* FIXME: These should actually indicate PowerPC, when there is some
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standard way of expressing that. */
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#undef CPP_PREDEFINES
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#define CPP_PREDEFINES \
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"-DPPC D__netware__ -Asystem(netware) -Acpu(powerpc) -Amachine(powerpc)"
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