| /* Definitions of target machine for GNU compiler. |
| Motorola m88100 running the AT&T/Unisoft/Motorola V.3 reference port. |
| Copyright (C) 1990, 1991, 1997, 1998, 1999 Free Software Foundation, Inc. |
| Contributed by Ray Essick (ressick@mot.com) |
| Enhanced by Tom Wood (Tom_Wood@NeXT.com) |
| |
| 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 2, 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, 59 Temple Place - Suite 330, |
| Boston, MA 02111-1307, USA. */ |
| |
| #include "m88k/m88k.h" |
| |
| /* Default switches */ |
| #undef TARGET_DEFAULT |
| #define TARGET_DEFAULT (MASK_CHECK_ZERO_DIV | \ |
| MASK_OCS_DEBUG_INFO | \ |
| MASK_OCS_FRAME_POSITION) |
| |
| /* Macros to be automatically defined. */ |
| #undef CPP_PREDEFINES |
| #define CPP_PREDEFINES "-Dm88000 -Dm88k -Dunix -DsysV88 -D__CLASSIFY_TYPE__=2 -Asystem=unix -Asystem=svr3 -Acpu=m88k -Amachine=m88k" |
| |
| /* Override svr3.h to link with ?crt0.o instead of ?crt1.o and ?crtn.o. |
| From arul@sdsu.edu. */ |
| #undef STARTFILE_SPEC |
| #define STARTFILE_SPEC \ |
| "%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}} crtbegin.o%s" |
| |
| /* Profiled libraries live in a different directory but keep the same |
| names other than that. arul@sdsu.edu says -lg is always needed. */ |
| #undef LIB_SPEC |
| #define LIB_SPEC "%{p:-L/lib/libp}%{pg:%{!p:-L/lib/libp}} -lg -lc crtend.o%s" |
| |
| /* We need POSIX/XOPEN symbols; otherwise building libio will fail. */ |
| #define ADD_MISSING_POSIX 1 |
| #define ADD_MISSING_XOPEN 1 |
| |
| /* Hot version of the profiler that uses r10 to pass the address of |
| the counter. the _gcc_mcount routine knows not to screw with |
| the parameter registers. |
| |
| DG/UX does this; i wrote a gnu-c/88k specific version and put it |
| in libgcc2.c -- RBE; this macro knows about the leading underscore |
| convention. */ |
| #undef FUNCTION_PROFILER |
| #define FUNCTION_PROFILER(FILE, LABELNO) \ |
| output_function_profiler (FILE, LABELNO, "_gcc_mcount", 0) |
| |
| /* Various other changes that we want to have in place without |
| too many changes to the m88k.h file. */ |
| #undef USE_LIBG |
| #define USE_LIBG |
| |
| /* Define a few machine-specific details of the implementation of |
| constructors. */ |
| |
| /* Although the .init section is used, it is not automatically invoked. */ |
| #define INVOKE__main |
| |
| #define CTOR_LIST_BEGIN \ |
| asm (INIT_SECTION_ASM_OP); \ |
| asm ("\tsubu\t r31,r31,16"); /* (STACK_BOUNDARY / BITS_PER_UNIT) == 16 */ \ |
| asm ("\tst\t r0,r31,32"); /* REG_PARM_STACK_SPACE (0) == 32 */ |
| #define CTOR_LIST_END |
| |
| #define TARGET_ASM_CONSTRUCTOR m88k_svr3_asm_out_constructor |
| #define TARGET_ASM_DESTRUCTOR m88k_svr3_asm_out_destructor |
| |
| #undef DO_GLOBAL_CTORS_BODY |
| #define DO_GLOBAL_CTORS_BODY \ |
| do { \ |
| func_ptr *__CTOR_LIST__ = __builtin_alloca (1), *p; \ |
| for (p = __CTOR_LIST__ + 4; *p; p += 4) \ |
| (*p) (); \ |
| } while (0) |
| |
| #define DTOR_LIST_BEGIN \ |
| asm (FINI_SECTION_ASM_OP); \ |
| func_ptr __DTOR_LIST__[4] = { (func_ptr) (-1), (func_ptr) (-1), \ |
| (func_ptr) (-1), (func_ptr) (-1) } |
| #define DTOR_LIST_END \ |
| asm (FINI_SECTION_ASM_OP); \ |
| func_ptr __DTOR_END__[4] = { (func_ptr) 0, (func_ptr) 0, \ |
| (func_ptr) 0, (func_ptr) 0 } |
| |
| /* Walk the list looking for the terminating zero and ignoring all values of |
| -1. */ |
| #undef DO_GLOBAL_DTORS_BODY |
| #define DO_GLOBAL_DTORS_BODY \ |
| do { \ |
| int i; \ |
| for (i = 0; __DTOR_LIST__[i] != 0; i++) \ |
| if (((int *)__DTOR_LIST__)[i] != -1) \ |
| __DTOR_LIST__[i] (); \ |
| } while (0) |
| |
| #undef INITIALIZE_TRAMPOLINE |
| #define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT) \ |
| { \ |
| emit_move_insn (gen_rtx_MEM (SImode, plus_constant (TRAMP, 40)), FNADDR); \ |
| emit_move_insn (gen_rtx_MEM (SImode, plus_constant (TRAMP, 36)), CXT); \ |
| emit_call_insn (gen_call \ |
| (gen_rtx_MEM \ |
| (SImode, \ |
| gen_rtx_SYMBOL_REF (Pmode, "__enable_execute_stack")), \ |
| const0_rtx)); \ |
| } |