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Diffstat (limited to 'gcc/config/m68k/linux.h')
| -rw-r--r-- | gcc/config/m68k/linux.h | 387 |
1 files changed, 0 insertions, 387 deletions
diff --git a/gcc/config/m68k/linux.h b/gcc/config/m68k/linux.h deleted file mode 100644 index 10ef0e8be06..00000000000 --- a/gcc/config/m68k/linux.h +++ /dev/null @@ -1,387 +0,0 @@ -/* Definitions for Motorola 68k running Linux with ELF format. - Copyright (C) 1995, 1996, 1997 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, 59 Temple Place - Suite 330, -Boston, MA 02111-1307, USA. */ - -#define LINUX_DEFAULT_ELF -#define MOTOROLA /* Use Motorola syntax */ -#define USE_GAS /* But GAS wants jbsr instead of jsr */ - -#include <m68k/m68k.h> -#include <linux.h> /* some common stuff */ - -#undef TARGET_VERSION -#define TARGET_VERSION fprintf (stderr, " (68k Linux/ELF)"); - -/* 68020 with 68881 */ -#define TARGET_DEFAULT (MASK_BITFIELD|MASK_68881|MASK_68020) - -/* for 68k machines this only needs to be TRUE for the 68000 */ - -#undef STRICT_ALIGNMENT -#define STRICT_ALIGNMENT 0 - -#undef SUBTARGET_SWITCHES -#define SUBTARGET_SWITCHES {"ieee-fp", 0}, - -/* Here are four prefixes that are used by asm_fprintf to - facilitate customization for alternate assembler syntaxes. - Machines with no likelihood of an alternate syntax need not - define these and need not use asm_fprintf. */ - -/* The prefix for register names. Note that REGISTER_NAMES - is supposed to include this prefix. Also note that this is NOT an - fprintf format string, it is a literal string */ - -#undef REGISTER_PREFIX -#define REGISTER_PREFIX "%" - -/* The prefix for local (compiler generated) labels. - These labels will not appear in the symbol table. */ - -#undef LOCAL_LABEL_PREFIX -#define LOCAL_LABEL_PREFIX "." - -/* The prefix to add to user-visible assembler symbols. */ - -#undef USER_LABEL_PREFIX -#define USER_LABEL_PREFIX "" - -/* How to refer to registers in assembler output. - This sequence is indexed by compiler's hard-register-number. - Motorola format uses different register names than defined in m68k.h. */ - -#undef REGISTER_NAMES - -#ifndef SUPPORT_SUN_FPA - -#define REGISTER_NAMES \ -{"%d0", "%d1", "%d2", "%d3", "%d4", "%d5", "%d6", "%d7", \ - "%a0", "%a1", "%a2", "%a3", "%a4", "%a5", "%a6", "%sp", \ - "%fp0", "%fp1", "%fp2", "%fp3", "%fp4", "%fp5", "%fp6", "%fp7" } - -#else /* SUPPORTED_SUN_FPA */ - -#define REGISTER_NAMES \ -{"%d0", "%d1", "%d2", "%d3", "%d4", "%d5", "%d6", "%d7", \ - "%a0", "%a1", "%a2", "%a3", "%a4", "%a5", "%a6", "%sp", \ - "%fp0", "%fp1", "%fp2", "%fp3", "%fp4", "%fp5", "%fp6", "%fp7", \ - "%fpa0", "%fpa1", "%fpa2", "%fpa3", "%fpa4", "%fpa5", "%fpa6", "%fpa7", \ - "%fpa8", "%fpa9", "%fpa10","%fpa11","%fpa12","%fpa13","%fpa14","%fpa15", \ - "%fpa16","%fpa17","%fpa18","%fpa19","%fpa20","%fpa21","%fpa22","%fpa23", \ - "%fpa24","%fpa25","%fpa26","%fpa27","%fpa28","%fpa29","%fpa30","%fpa31" } - -#endif /* defined SUPPORT_SUN_FPA */ - -#undef SIZE_TYPE -#define SIZE_TYPE "unsigned int" - -#undef PTRDIFF_TYPE -#define PTRDIFF_TYPE "int" - -#undef WCHAR_TYPE -#define WCHAR_TYPE "long int" - -#undef WCHAR_TYPE_SIZE -#define WCHAR_TYPE_SIZE BITS_PER_WORD - -#define CPP_PREDEFINES \ - "-D__ELF__ -Dunix -Dmc68000 -Dmc68020 -Dlinux -Asystem(unix) -Asystem(posix) -Acpu(m68k) -Amachine(m68k)" - -#undef CPP_SPEC -#if TARGET_DEFAULT & MASK_68881 -#define CPP_SPEC \ - "%{fPIC:-D__PIC__ -D__pic__} %{fpic:-D__PIC__ -D__pic__} %{!msoft-float:-D__HAVE_68881__} %{posix:-D_POSIX_SOURCE}" -#else -#define CPP_SPEC \ - "%{fPIC:-D__PIC__ -D__pic__} %{fpic:-D__PIC__ -D__pic__} %{m68881:-D__HAVE_68881__} %{posix:-D_POSIX_SOURCE}" -#endif - -/* Provide a LINK_SPEC appropriate for Linux. Here we provide support - for the special GCC options -static and -shared, which allow us to - link things in one of these three modes by applying the appropriate - combinations of options at link-time. We like to support here for - as many of the other GNU linker options as possible. But I don't - have the time to search for those flags. I am sure how to add - support for -soname shared_object_name. H.J. - - I took out %{v:%{!V:-V}}. It is too much :-(. They can use - -Wl,-V. - - When the -shared link option is used a final link is not being - done. */ - -/* If ELF is the default format, we should not use /lib/elf. */ - -#undef LINK_SPEC -#ifndef LINUX_DEFAULT_ELF -#define LINK_SPEC "-m m68kelf %{shared} %{symbolic:-shared -Bsymbolic} \ - %{!shared:%{!symbolic: \ - %{!static: \ - %{rdynamic:-export-dynamic} \ - %{!dynamic-linker*:-dynamic-linker /lib/elf/ld-linux.so.1} \ - %{!rpath*:-rpath /lib/elf/}} %{static}}}" -#else -#define LINK_SPEC "-m m68kelf %{shared} %{symbolic:-shared -Bsymbolic} \ - %{!shared:%{!symbolic: \ - %{!static: \ - %{rdynamic:-export-dynamic} \ - %{!dynamic-linker*:-dynamic-linker /lib/ld-linux.so.1}} \ - %{static}}}" -#endif - -/* For compatibility with linux/a.out */ - -#undef PCC_BITFIELD_TYPE_MATTERS - -/* Currently, JUMP_TABLES_IN_TEXT_SECTION must be defined in order to - keep switch tables in the text section. */ - -#define JUMP_TABLES_IN_TEXT_SECTION 1 - -/* Use the default action for outputting the case label. */ -#undef ASM_OUTPUT_CASE_LABEL -#define ASM_RETURN_CASE_JUMP \ - do { \ - if (TARGET_5200) \ - return "ext%.l %0\n\tjmp %%pc@(2,%0:l)"; \ - else \ - return "jmp %%pc@(2,%0:w)"; \ - } while (0) - -/* This is how to output an assembler line that says to advance the - location counter to a multiple of 2**LOG bytes. */ - -#undef ASM_OUTPUT_ALIGN -#define ASM_OUTPUT_ALIGN(FILE,LOG) \ - if ((LOG) > 0) \ - fprintf ((FILE), "\t%s \t%u\n", ALIGN_ASM_OP, 1 << (LOG)); - -/* If defined, a C expression whose value is a string containing the - assembler operation to identify the following data as uninitialized global - data. */ - -#define BSS_SECTION_ASM_OP ".section\t.bss" - -/* A C statement (sans semicolon) to output to the stdio stream - FILE the assembler definition of uninitialized global DECL named - NAME whose size is SIZE bytes and alignment is ALIGN bytes. - Try to use asm_output_aligned_bss to implement this macro. */ - -#define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \ - asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN) - -/* Output assembler code to FILE to increment profiler label # LABELNO - for profiling a function entry. */ - -#undef FUNCTION_PROFILER -#define FUNCTION_PROFILER(FILE, LABELNO) \ -{ \ - asm_fprintf (FILE, "\tlea (%LLP%d,%Rpc),%Ra1\n", (LABELNO)); \ - if (flag_pic) \ - fprintf (FILE, "\tbsr.l _mcount@PLTPC\n"); \ - else \ - fprintf (FILE, "\tjbsr _mcount\n"); \ -} - -/* Register in which address to store a structure value is passed to a - function. The default in m68k.h is a1. For m68k/SVR4 it is a0. */ - -#undef STRUCT_VALUE_REGNUM -#define STRUCT_VALUE_REGNUM 8 - -/* Register in which static-chain is passed to a function. The - default in m68k.h is a0, but that is already the struct value - regnum. Make it a1 instead. */ - -#undef STATIC_CHAIN_REGNUM -#define STATIC_CHAIN_REGNUM 9 - -/* How to renumber registers for dbx and gdb. - On the Sun-3, the floating point registers have numbers - 18 to 25, not 16 to 23 as they do in the compiler. */ - -#define DBX_REGISTER_NUMBER(REGNO) ((REGNO) < 16 ? (REGNO) : (REGNO) + 2) - -/* Do not break .stabs pseudos into continuations. */ - -#define DBX_CONTIN_LENGTH 0 - -/* Allow folding division by zero. */ -#define REAL_INFINITY - -/* 1 if N is a possible register number for a function value. For - m68k/SVR4 allow d0, a0, or fp0 as return registers, for integral, - pointer, or floating types, respectively. Reject fp0 if not using - a 68881 coprocessor. */ - -#undef FUNCTION_VALUE_REGNO_P -#define FUNCTION_VALUE_REGNO_P(N) \ - ((N) == 0 || (N) == 8 || (TARGET_68881 && (N) == 16)) - -/* Define this to be true when FUNCTION_VALUE_REGNO_P is true for - more than one register. */ - -#undef NEEDS_UNTYPED_CALL -#define NEEDS_UNTYPED_CALL 1 - -/* Define how to generate (in the callee) the output value of a - function and how to find (in the caller) the value returned by a - function. VALTYPE is the data type of the value (as a tree). If - the precise function being called is known, FUNC is its - FUNCTION_DECL; otherwise, FUNC is 0. For m68k/SVR4 generate the - result in d0, a0, or fp0 as appropriate. */ - -#undef FUNCTION_VALUE -#define FUNCTION_VALUE(VALTYPE, FUNC) \ - (TREE_CODE (VALTYPE) == REAL_TYPE && TARGET_68881 \ - ? gen_rtx (REG, TYPE_MODE (VALTYPE), 16) \ - : (POINTER_TYPE_P (VALTYPE) \ - ? gen_rtx (REG, TYPE_MODE (VALTYPE), 8) \ - : gen_rtx (REG, TYPE_MODE (VALTYPE), 0))) - -/* For compatibility with the large body of existing code which does - not always properly declare external functions returning pointer - types, the m68k/SVR4 convention is to copy the value returned for - pointer functions from a0 to d0 in the function epilogue, so that - callers that have neglected to properly declare the callee can - still find the correct return value. */ - -extern int current_function_returns_pointer; -#define FUNCTION_EXTRA_EPILOGUE(FILE, SIZE) \ -do { \ - if ((current_function_returns_pointer) && \ - ! find_equiv_reg (0, get_last_insn (), 0, 0, 0, 8, Pmode)) \ - asm_fprintf (FILE, "\tmove.l %Ra0,%Rd0\n"); \ -} while (0); - -/* Define how to find the value returned by a library function - assuming the value has mode MODE. - For m68k/SVR4 look for integer values in d0, pointer values in d0 - (returned in both d0 and a0), and floating values in fp0. */ - -#undef LIBCALL_VALUE -#define LIBCALL_VALUE(MODE) \ - ((((MODE) == SFmode || (MODE) == DFmode || (MODE) == XFmode) \ - && TARGET_68881) \ - ? gen_rtx (REG, (MODE), 16) \ - : gen_rtx (REG, (MODE), 0)) - -/* In m68k svr4, a symbol_ref rtx can be a valid PIC operand if it is - an operand of a function call. */ -#undef LEGITIMATE_PIC_OPERAND_P -#define LEGITIMATE_PIC_OPERAND_P(X) \ - ((! symbolic_operand (X, VOIDmode) \ - && ! (GET_CODE (X) == CONST_DOUBLE && CONST_DOUBLE_MEM (X) \ - && GET_CODE (CONST_DOUBLE_MEM (X)) == MEM \ - && symbolic_operand (XEXP (CONST_DOUBLE_MEM (X), 0), VOIDmode))) \ - || (GET_CODE (X) == SYMBOL_REF && SYMBOL_REF_FLAG (X))) - -/* Turn off function cse if we are doing PIC. We always want function - call to be done as `bsr foo@PLTPC', so it will force the assembler - to create the PLT entry for `foo'. Doing function cse will cause - the address of `foo' to be loaded into a register, which is exactly - what we want to avoid when we are doing PIC on svr4 m68k. */ -#undef SUBTARGET_OVERRIDE_OPTIONS -#define SUBTARGET_OVERRIDE_OPTIONS \ - if (flag_pic) flag_no_function_cse = 1; - -/* For m68k SVR4, structures are returned using the reentrant - technique. */ -#undef PCC_STATIC_STRUCT_RETURN -#define DEFAULT_PCC_STRUCT_RETURN 0 - -/* Emit RTL insns to initialize the variable parts of a trampoline. - FNADDR is an RTX for the address of the function's pure code. - CXT is an RTX for the static chain value for the function. */ - -/* This is different from the generic version in that we use a1 as the - static call chain. */ - -#undef INITIALIZE_TRAMPOLINE -#define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT) \ -{ \ - emit_move_insn (gen_rtx (MEM, HImode, TRAMP), GEN_INT (0x227C)); \ - emit_move_insn (gen_rtx (MEM, SImode, plus_constant (TRAMP, 2)), CXT); \ - emit_move_insn (gen_rtx (MEM, HImode, plus_constant (TRAMP, 6)), \ - GEN_INT (0x4EF9)); \ - emit_move_insn (gen_rtx (MEM, SImode, plus_constant (TRAMP, 8)), FNADDR); \ - FINALIZE_TRAMPOLINE (TRAMP); \ -} - -/* Finalize the trampoline by flushing the insn cache. */ - -#undef FINALIZE_TRAMPOLINE -#define FINALIZE_TRAMPOLINE(TRAMP) \ - emit_library_call (gen_rtx (SYMBOL_REF, Pmode, "__clear_cache"), \ - 0, VOIDmode, 2, TRAMP, Pmode, \ - plus_constant (TRAMP, TRAMPOLINE_SIZE), Pmode); - -/* Clear the instruction cache from `beg' to `end'. This makes an - inline system call to SYS_cacheflush. The arguments are as - follows: - - cacheflush (addr, scope, cache, len) - - addr - the start address for the flush - scope - the scope of the flush (see the cpush insn) - cache - which cache to flush (see the cpush insn) - len - a factor relating to the number of flushes to perform: - len/16 lines, or len/4096 pages. */ - -#define CLEAR_INSN_CACHE(BEG, END) \ -{ \ - register unsigned long _beg __asm ("%d1") = (unsigned long) (BEG); \ - unsigned long _end = (unsigned long) (END); \ - register unsigned long _len __asm ("%d4") = (_end - _beg + 32); \ - __asm __volatile \ - ("move%.l %#123, %/d0\n\t" /* system call nr */ \ - "move%.l %#1, %/d2\n\t" /* clear lines */ \ - "move%.l %#3, %/d3\n\t" /* insn+data caches */ \ - "trap %#0" \ - : /* no outputs */ \ - : "d" (_beg), "d" (_len) \ - : "%d0", "%d2", "%d3"); \ -} - -/* Output code to add DELTA to the first argument, and then jump to FUNCTION. - Used for C++ multiple inheritance. */ -#define ASM_OUTPUT_MI_THUNK(FILE, THUNK_FNDECL, DELTA, FUNCTION) \ -do { \ - if (DELTA > 0 && DELTA <= 8) \ - asm_fprintf (FILE, "\taddq.l %I%d,4(%Rsp)\n", DELTA); \ - else if (DELTA < 0 && DELTA >= -8) \ - asm_fprintf (FILE, "\tsubq.l %I%d,4(%Rsp)\n", -DELTA); \ - else \ - asm_fprintf (FILE, "\tadd.l %I%d,4(%Rsp)\n", DELTA); \ - \ - if (flag_pic) \ - { \ - fprintf (FILE, "\tbra.l "); \ - assemble_name \ - (FILE, IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (FUNCTION))); \ - fprintf (FILE, "@PLTPC\n"); \ - } \ - else \ - { \ - fprintf (FILE, "\tjmp "); \ - assemble_name \ - (FILE, IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (FUNCTION))); \ - fprintf (FILE, "\n"); \ - } \ -} while (0) |