103 lines
3.6 KiB
C
103 lines
3.6 KiB
C
/* Definitions of target machine for GNU compiler.
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Motorola m88100 running the AT&T/Unisoft/Motorla V.3 reference port.
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Copyright (C) 1990, 1991 Free Software Foundation, Inc.
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Contributed by Ray Essick (ressick@mot.com)
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Currently supported by Tom Wood (wood@dg-rtp.dg.com)
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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 "m88k.h"
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/* Default switches */
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#undef TARGET_DEFAULT
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#define TARGET_DEFAULT (MASK_CHECK_ZERO_DIV | \
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MASK_OCS_DEBUG_INFO | \
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MASK_OCS_FRAME_POSITION)
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/* Macros to be automatically defined. */
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#undef CPP_PREDEFINES
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#define CPP_PREDEFINES "-Dm88000 -Dm88k -DsysV88 -D__CLASSIFY_TYPE__=2"
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/* Override svr3.h to link with ?crt0.o instead of ?crt1.o and ?crtn.o.
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From arul@sdsu.edu. */
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#undef STARTFILE_SPEC
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#define STARTFILE_SPEC \
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"%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}} crtbegin.o%s"
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/* Profiled libraries live in a different directory but keep the same
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names other than that. arul@sdsu.edu says -lg is always needed. */
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#undef LIB_SPEC
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#define LIB_SPEC "%{p:-L/lib/libp}%{pg:%{!p:-L/lib/libp}} -lg -lc crtend.o%s"
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/* Hot version of the profiler that uses r10 to pass the address of
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the counter. the _gcc_mcount routine knows not to screw with
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the parameter registers.
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DG/UX does this; i wrote a gnu-c/88k specific version and put it
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in libgcc2.c -- RBE; this macro knows about the leading underscore
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convention. */
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#undef FUNCTION_PROFILER
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#define FUNCTION_PROFILER(FILE, LABELNO) \
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output_function_profiler (FILE, LABELNO, "_gcc_mcount", 0)
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/* Various other changes that we want to have in place without
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too many changes to the m88k.h file. */
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#undef USE_LIBG
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#define USE_LIBG
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/* Define a few machine-specific details
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of the implementation of constructors.
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CTORS_SECTION_ASM_OP should be defined to concatenate
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the macro INIT_SECTION_ASM_OP, a newline, and a push instruction
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to push a word containing 0 (or some equivalent of that).
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ASM_OUTPUT_CONSTRUCTOR should be defined
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to push the address of the constructor. */
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#undef DO_GLOBAL_CTORS_BODY
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#define DO_GLOBAL_CTORS_BODY \
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do { \
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func_ptr *__CTOR_LIST__ = __builtin_alloca (0), *p; \
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for (p = __CTOR_LIST__; *p; p += 4) \
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(*p) (); \
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} while (0)
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#undef CTORS_SECTION_ASM_OP
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#define CTORS_SECTION_ASM_OP \
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INIT_SECTION_ASM_OP "\n" \
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"subu\t r31,r31,16\n\tst\t r0,r31,32\n\t" \
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DATA_SECTION_ASM_OP
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/* The reason we end with DATA_SECTION_ASM_OP is to prevent the
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initial and final table elements (see crtstuff.c) from getting into
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the .init section and causing a crash. */
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#undef ASM_OUTPUT_CONSTRUCTOR
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#define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME) \
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do { \
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init_section (); \
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fprintf (FILE, "\tor.u r13,r0,hi16("); \
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assemble_name (FILE, NAME); \
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fprintf (FILE, ")\nor\t r13,r13,lo16("); \
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assemble_name (FILE, NAME); \
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fprintf (FILE, ")\n\tsubu r31,r31,16\nst\t r13,r31,32\n"); \
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} while (0)
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#undef DTORS_SECTION_ASM_OP
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#define DTORS_SECTION_ASM_OP FINI_SECTION_ASM_OP
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