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Diffstat (limited to 'gcc-1.40/config/tm-apollo68.h')
| -rw-r--r-- | gcc-1.40/config/tm-apollo68.h | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/gcc-1.40/config/tm-apollo68.h b/gcc-1.40/config/tm-apollo68.h new file mode 100644 index 0000000..cddfd07 --- /dev/null +++ b/gcc-1.40/config/tm-apollo68.h @@ -0,0 +1,177 @@ +/* Definitions of target machine for GNU compiler. Apollo 680X0 version. + Copyright (C) 1989 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 1, 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. */ + +#include "tm-m68k.h" + +/* This symbol may be tested in other files for special Apollo handling */ + +#define TM_APOLLO + +/* See tm-m68k.h. 7 means 68020 with 68881. */ + +#ifndef TARGET_DEFAULT +#define TARGET_DEFAULT 7 +#endif + +/* Target switches for the Apollo is the same as in tm-m68k.h, except + there is no Sun FPA. */ + +#undef TARGET_SWITCHES +#define TARGET_SWITCHES \ + { { "68020", 5}, \ + { "c68020", 5}, \ + { "68881", 2}, \ + { "bitfield", 4}, \ + { "68000", -5}, \ + { "c68000", -5}, \ + { "soft-float", -0102}, \ + { "nobitfield", -4}, \ + { "rtd", 8}, \ + { "nortd", -8}, \ + { "short", 040}, \ + { "noshort", -040}, \ + { "", TARGET_DEFAULT}} + +/* Define __HAVE_68881__ in preprocessor, + according to the -m flags. + This will control the use of inline 68881 insns in certain macros. + Also inform the program which CPU this is for. */ + +#if TARGET_DEFAULT & 02 + +/* -m68881 is the default */ +#define CPP_SPEC \ +"%{!msoft-float:%{mfpa:-D__HAVE_FPA__ }%{!mfpa:-D__HAVE_68881__ }}\ +%{!ansi:%{m68000:-Dmc68010 }%{mc68000:-Dmc68010 }%{!mc68000:%{!m68000:-Dmc68020 }}\ +%{!ansi:-D_APOLLO_SOURCE}}" + +#else + +/* -msoft-float is the default */ +#define CPP_SPEC \ +"%{m68881:-D__HAVE_68881__ }%{mfpa:-D__HAVE_FPA__ }\ +%{!ansi:%{m68000:-Dmc68010 }%{mc68000:-Dmc68010 }%{!mc68000:%{!m68000:-Dmc68020 }}\ +%{!ansi:-D_APOLLO_SOURCE}}" + +#endif + +/* Names to predefine in the preprocessor for this target machine. */ +/* These are the ones defined by Apollo, plus mc68000 for uniformity with + GCC on other 68000 systems. */ + +#define CPP_PREDEFINES "-Dapollo -Daegis -Dunix" + +/* cpp has to support a #sccs directive for the /usr/include files */ + +#define SCCS_DIRECTIVE + +/* Allow #ident but output nothing for it. */ + +#define IDENT_DIRECTIVE +#define ASM_OUTPUT_IDENT(FILE, NAME) + +/* Allow dollarsigns in identifiers */ + +#define DOLLARS_IN_IDENTIFIERS 1 + +/* -m68000 requires special flags to the assembler. + The -C flag is passed to a modified GNU assembler to cause COFF + modules to be produced. Remove it if you're not using this. + (See vasta@apollo.com.) */ + +#define ASM_SPEC \ + "-C %{m68000:-mc68010}%{mc68000:-mc68010}%{!mc68000:%{!m68000:-mc68020}}" + +/* STARTFILE_SPEC + Note that includes knowledge of the default specs for gcc, ie. no + args translates to the same effect as -m68881 */ + +/* To get ANSI-conformant behavior, a special version of crt0.o must be used. + We use the -ansi switch to pick up that version. */ + +#define STARTFILE_SPEC \ + "%{ansi:/usr/apollo/lib/%{pg:gcrt0.o}%{!pg:%{p:mcrt0.o}%{!p:crt0.o}}}\ +%{!ansi:%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}}" + +/* Make sure ld sets the entry point to _start. + This is in LIB_SPEC rather than LINK_SPEC because it needs to + come after _start is defined, and to eliminate the default LIB_SPEC. */ +#define LIB_SPEC "-e _start" + +/* Debugging is not supported yet */ + +#undef DBX_DEBUGGING_INFO +#undef SDB_DEBUGGING_INFO + +/* Every structure or union's size must be a multiple of 2 bytes. */ + +#define STRUCTURE_SIZE_BOUNDARY 16 + +/* Functions which return large structures get the address + to place the wanted value at offset 8 from the frame. */ + +#undef PCC_STATIC_STRUCT_RETURN +#undef STRUCT_VALUE_REGNUM + +/* Caller treats address of return area like a parm. */ +#define STRUCT_VALUE 0 + +#define STRUCT_VALUE_INCOMING \ + gen_rtx (MEM, Pmode, \ + gen_rtx (PLUS, SImode, frame_pointer_rtx, \ + gen_rtx (CONST_INT, VOIDmode, 8))) + +/* Boundary (in *bits*) on which stack pointer should be aligned. */ +#undef STACK_BOUNDARY +#define STACK_BOUNDARY 32 + +/* Specify how to pad function arguments. + Arguments are not padded at all; the stack is kept aligned on long + boundaries. */ + +#define FUNCTION_ARG_PADDING(mode, size) none + +/* Short integral argument prototype promotion is not done */ + +#undef PROMOTE_PROTOTYPES + +/* The definition of this macro imposes a limit on the size of + an aggregate object which can be treated as if it were a scalar + object. */ + +#define MAX_FIXED_MODE_SIZE BITS_PER_WORD + +/* The definition of this macro implies that there are cases where + a scalar value cannot be returned in registers. + For Apollo, anything larger than one integer register is returned + using the structure-value mechanism, i.e. objects of DFmode are + returned that way. */ + +#define RETURN_IN_MEMORY(type) \ + (GET_MODE_SIZE (TYPE_MODE (type)) > UNITS_PER_WORD) + +/* This is how to output a reference to a user-level label named NAME. + In order to link to Apollo libraries, no underscore is prepended to names. + `assemble_name' uses this. */ + +#undef ASM_OUTPUT_LABELREF +#define ASM_OUTPUT_LABELREF(FILE,NAME) \ + fprintf (FILE, "%s", NAME) + + |