148 lines
4.9 KiB
C
148 lines
4.9 KiB
C
/* Definitions of target machine for GNU compiler, Citicorp/TTI Unicom PBD
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version (using GAS and COFF (encapsulated is unacceptable) )
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Copyright (C) 1990, 1996, 2000 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC 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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GCC 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 GCC; 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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/* Target OS builtins. */
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#define TARGET_OS_CPP_BUILTINS() \
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do \
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{ \
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builtin_define_std ("unix"); \
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builtin_define_std ("UnicomPBD"); \
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builtin_assert ("system=unix"); \
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} \
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while (0)
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/* We want DBX format for use with gdb under COFF. */
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#define DBX_DEBUGGING_INFO 1
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/* Generate calls to memcpy, memcmp and memset. */
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#define TARGET_MEM_FUNCTIONS
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/* we use /lib/libp/lib* when profiling */
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#undef LIB_SPEC
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#define LIB_SPEC "%{p:-L/usr/lib/libp} %{pg:-L/usr/lib/libp} -lc"
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/* Use crt1.o as a startup file and crtn.o as a closing file. */
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/*
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* The loader directive file gcc.ifile defines how to merge the constructor
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* sections into the data section. Also, since gas only puts out those
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* sections in response to N_SETT stabs, and does not (yet) have a
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* ".sections" directive, gcc.ifile also defines the list symbols
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* __DTOR_LIST__ and __CTOR_LIST__.
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*
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* Finally, we must explicitly specify the file from libgcc.a that defines
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* exit(), otherwise if the user specifies (for example) "-lc_s" on the
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* command line, the wrong exit() will be used and global destructors will
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* not get called .
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*/
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#define STARTFILE_SPEC \
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"%{!r: gcc.ifile%s} %{pg:gcrt1.o%s}%{!pg:%{p:mcrt1.o%s}%{!p:crt1.o%s}} \
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%{!r:_exit.o%s}"
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#define ENDFILE_SPEC "crtn.o%s"
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/* LINK_SPEC is needed only for SunOS 4. */
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#undef LINK_SPEC
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/* Although the gas we use can create .ctor and .dtor sections from N_SETT
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stabs, it does not support section directives, so we need to have the loader
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define the lists.
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*/
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#define CTOR_LISTS_DEFINED_EXTERNALLY
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/* similar to default, but allows for the table defined by ld with gcc.ifile.
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nptrs is always 0. So we need to instead check that __DTOR_LIST__[1] != 0.
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The old check is left in so that the same macro can be used if and when
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a future version of gas does support section directives. */
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#define DO_GLOBAL_DTORS_BODY {int nptrs = *(int *)__DTOR_LIST__; int i; \
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if (nptrs == -1 || (__DTOR_LIST__[0] == 0 && __DTOR_LIST__[1] != 0)) \
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for (nptrs = 0; __DTOR_LIST__[nptrs + 1] != 0; nptrs++); \
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for (i = nptrs; i >= 1; i--) \
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__DTOR_LIST__[i] (); }
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/*
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* Here is an example gcc.ifile. I've tested it on PBD sparc
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* systems. The NEXT(0x200000) works on just about all 386 and m68k systems,
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* but can be reduced to any power of 2 that is >= NBPS (0x40000 on a pbd).
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SECTIONS {
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.text BIND(0x41000200) BLOCK (0x200) :
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{ *(.init) *(.text) vfork = fork; *(.fini) }
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GROUP BIND( NEXT(0x200000) + ADDR(.text) + SIZEOF(.text)):
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{ .data : { __CTOR_LIST__ = . ; . += 4; *(.ctor) . += 4 ;
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__DTOR_LIST__ = . ; . += 4; *(.dtor) . += 4 ; }
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.bss : { }
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}
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}
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*/
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/* The prefix to add to user-visible assembler symbols. */
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#undef USER_LABEL_PREFIX
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#define USER_LABEL_PREFIX ""
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/* fixes: */
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/*
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* Internal labels are prefixed with a period.
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*/
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#undef LOCAL_LABEL_PREFIX
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#define LOCAL_LABEL_PREFIX "."
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/* This is how to store into the string LABEL
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the symbol_ref name of an internal numbered label where
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PREFIX is the class of label and NUM is the number within the class.
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This is suitable for output with `assemble_name'. */
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#undef ASM_GENERATE_INTERNAL_LABEL
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#define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \
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sprintf (LABEL, "*.%s%ld", PREFIX, (long)(NUM))
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/* This is how to output an element of a case-vector that is relative. */
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#undef ASM_OUTPUT_ADDR_DIFF_ELT
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#define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \
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fprintf (FILE, "\t.word .L%d-.L%d\n", VALUE, REL)
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/* This is how to output an element of a case-vector that is absolute.
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(The 68000 does not use such vectors,
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but we must define this macro anyway.) */
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#undef ASM_OUTPUT_ADDR_VEC_ELT
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#define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \
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fprintf (FILE, "\t.word .L%d\n", VALUE)
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/* This is needed for SunOS 4.0, and should not hurt for 3.2
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versions either. */
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#undef ASM_OUTPUT_SOURCE_LINE
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#define ASM_OUTPUT_SOURCE_LINE(file, line, counter) \
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fprintf (file, ".stabn 68,0,%d,.LM%d\n.LM%d:\n", \
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line, counter, counter)
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#define ASM_INT_OP "\t.long "
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