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Annotation of gcc/config/m68k/lynx.h, revision 1.1.1.3

1.1.1.2   root        1: /* Definitions for Motorola 680x0 running LynxOS.
1.1.1.3 ! root        2:    Copyright (C) 1993, 1994, 1995 Free Software Foundation, Inc.
1.1       root        3: 
                      4: This file is part of GNU CC.
                      5: 
                      6: GNU CC is free software; you can redistribute it and/or modify
                      7: it under the terms of the GNU General Public License as published by
                      8: the Free Software Foundation; either version 2, or (at your option)
                      9: any later version.
                     10: 
                     11: GNU CC is distributed in the hope that it will be useful,
                     12: but WITHOUT ANY WARRANTY; without even the implied warranty of
                     13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     14: GNU General Public License for more details.
                     15: 
                     16: You should have received a copy of the GNU General Public License
                     17: along with GNU CC; see the file COPYING.  If not, write to
1.1.1.3 ! root       18: the Free Software Foundation, 59 Temple Place - Suite 330,
        !            19: Boston, MA 02111-1307, USA.  */
1.1       root       20: 
1.1.1.3 ! root       21: #include <m68k/m68k.h>
        !            22: #include <m68k/coff.h>
1.1.1.2   root       23: 
                     24: #undef CTORS_SECTION_ASM_OP
                     25: #undef DTORS_SECTION_ASM_OP
                     26: #undef ASM_OUTPUT_DESTRUCTOR
                     27: #undef SELECT_RTX_SECTION
                     28: 
                     29: #define BSS_SECTION_ASM_OP ".bss"
                     30: 
                     31: #define ASM_LONG ".long"
                     32: 
1.1.1.3 ! root       33: #include <lynx.h>
1.1       root       34: 
                     35: /* See m68k.h.  7 means 68020 with 68881.  */
                     36: 
                     37: #ifndef TARGET_DEFAULT
                     38: #define TARGET_DEFAULT 7
                     39: #endif
                     40: 
                     41: /* Names to predefine in the preprocessor for this target machine.  */
1.1.1.2   root       42: 
1.1       root       43: #undef CPP_PREDEFINES
1.1.1.2   root       44: #define CPP_PREDEFINES "-Dunix -Dmc68000 -DM68K -DLynx -DIBITS32 -Asystem(unix) -Asystem(lynx) -Acpu(m68k) -Amachine(m68k)"
1.1       root       45: 
                     46: /* Every structure or union's size must be a multiple of 2 bytes.  */
                     47: 
                     48: #define STRUCTURE_SIZE_BOUNDARY 16
1.1.1.2   root       49: 
                     50: /* Lynx uses d2 and d3 as scratch registers. */
                     51: #undef CALL_USED_REGISTERS
                     52: #define CALL_USED_REGISTERS \
                     53:  {1, 1, 1, 1, 0, 0, 0, 0,   \
                     54:   1, 1, 0, 0, 0, 0, 0, 1,   \
                     55:   1, 1, 0, 0, 0, 0, 0, 0 }
1.1.1.3 ! root       56: 
        !            57: /* Return floating point values in a fp register.  This make fp code a
        !            58:    little bit faster.  It also makes -msoft-float code incompatible with
        !            59:    -m68881 code, so people have to be careful not to mix the two.  */
        !            60: #undef FUNCTION_VALUE
        !            61: #define FUNCTION_VALUE(VALTYPE,FUNC) LIBCALL_VALUE (TYPE_MODE (VALTYPE))
        !            62: 
        !            63: #undef LIBCALL_VALUE
        !            64: #define LIBCALL_VALUE(MODE)                                                \
        !            65:  gen_rtx (REG, (MODE),                                                     \
        !            66:           ((TARGET_68881                                                   \
        !            67:             && ((MODE) == SFmode || (MODE) == DFmode || (MODE) == XFmode)) \
        !            68:            ? 16 : 0))
        !            69: 
        !            70: #undef FUNCTION_VALUE_REGNO_P
        !            71: #define FUNCTION_VALUE_REGNO_P(N) ((N) == 0 || (TARGET_68881 && (N) == 16))
        !            72: 
        !            73: #undef NEEDS_UNTYPED_CALL
        !            74: #define NEEDS_UNTYPED_CALL 1

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