/* Definitions for Motorola 68k running Linux-based GNU systems with
ELF format.
- Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2002 Free Software Foundation, Inc.
+ Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2002, 2003, 2004, 2006,
+ 2007 Free Software Foundation, Inc.
-This file is part of GNU CC.
+This file is part of GCC.
-GNU CC is free software; you can redistribute it and/or modify
+GCC 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)
+the Free Software Foundation; either version 3, or (at your option)
any later version.
-GNU CC is distributed in the hope that it will be useful,
+GCC 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 */
-
-/* TODO: convert includes to ${tm_file} list in config.gcc. */
-#include <m68k/m68k.h>
-
-/* Make sure CC1 is undefined. */
-#undef CC1_SPEC
-
-#include "dbxelf.h"
-#include "elfos.h"
-#include "svr4.h"
-#include <linux.h> /* some common stuff */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
#undef TARGET_VERSION
#define TARGET_VERSION fprintf (stderr, " (68k GNU/Linux with ELF)");
-/* 68020 with 68881 */
-#define TARGET_DEFAULT (MASK_BITFIELD|MASK_68881|MASK_68020)
+/* Add %(asm_cpu_spec) to the svr4.h definition of ASM_SPEC. */
+#undef ASM_SPEC
+#define ASM_SPEC "%(asm_cpu_spec) %(asm_pcrel_spec) \
+ %{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*}"
+
+#undef PREFERRED_STACK_BOUNDARY
+#define PREFERRED_STACK_BOUNDARY 32
/* for 68k machines this only needs to be TRUE for the 68000 */
-#undef STRICT_ALIGNMENT
+#undef STRICT_ALIGNMENT
#define STRICT_ALIGNMENT 0
-
-#undef SUBTARGET_SWITCHES
-#define SUBTARGET_SWITCHES {"ieee-fp", 0, \
- N_("Use IEEE math for fp comparisons")},
+#undef M68K_HONOR_TARGET_STRICT_ALIGNMENT
+#define M68K_HONOR_TARGET_STRICT_ALIGNMENT 0
/* Here are four prefixes that are used by asm_fprintf to
facilitate customization for alternate assembler syntaxes.
#define ASM_COMMENT_START "|"
-/* 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 -D__gnu_linux__ -Dlinux -Asystem=unix -Asystem=posix -Acpu=m68k -Amachine=m68k"
+/* Target OS builtins. */
+#define TARGET_OS_CPP_BUILTINS() LINUX_TARGET_OS_CPP_BUILTINS()
#undef CPP_SPEC
-#ifdef USE_GNULIBC_1
-#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
-#else
-#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} %{pthread:-D_REENTRANT}"
-#else
-#define CPP_SPEC \
- "%{fPIC:-D__PIC__ -D__pic__} %{fpic:-D__PIC__ -D__pic__} %{m68881:-D__HAVE_68881__} %{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}"
-#endif
-#endif
-
-/* We override the ASM_SPEC from svr4.h because we must pass -m68040 down
- to the assembler. */
-#undef ASM_SPEC
-#define ASM_SPEC \
- "%{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*} \
-%{m68040} %{m68060:-m68040}"
+#define CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}"
/* Provide a LINK_SPEC appropriate for GNU/Linux. Here we provide support
for the special GCC options -static and -shared, which allow us to
/* If ELF is the default format, we should not use /lib/elf. */
-#undef LINK_SPEC
-#ifdef USE_GNULIBC_1
-#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
-#else
+#define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
+
+#undef LINK_SPEC
#define LINK_SPEC "-m m68kelf %{shared} \
%{!shared: \
%{!static: \
%{rdynamic:-export-dynamic} \
- %{!dynamic-linker*:-dynamic-linker /lib/ld.so.1}} \
+ %{!dynamic-linker*:-dynamic-linker " LINUX_DYNAMIC_LINKER "}} \
%{static}}"
-#endif
/* For compatibility with linux/a.out */
#undef ASM_OUTPUT_CASE_LABEL
#define ASM_RETURN_CASE_JUMP \
do { \
- if (TARGET_5200) \
+ if (TARGET_COLDFIRE) \
{ \
if (ADDRESS_REG_P (operands[0])) \
return "jmp %%pc@(2,%0:l)"; \
if ((LOG) > 0) \
fprintf ((FILE), "%s%u\n", ALIGN_ASM_OP, 1 << (LOG));
+#ifdef HAVE_GAS_BALIGN_AND_P2ALIGN
+/* Use "move.l %a4,%a4" to advance within code. */
+#define ASM_OUTPUT_ALIGN_WITH_NOP(FILE,LOG) \
+ if ((LOG) > 0) \
+ fprintf ((FILE), "\t.balignw %u,0x284c\n", 1 << (LOG));
+#endif
+
/* If defined, a C expression whose value is a string containing the
assembler operation to identify the following data as uninitialized global
data. */
fprintf (FILE, "\tjbsr _mcount\n"); \
}
-/* 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
#undef FUNCTION_VALUE_REGNO_P
#define FUNCTION_VALUE_REGNO_P(N) \
- ((N) == 0 || (N) == 8 || (TARGET_68881 && (N) == 16))
+ ((N) == D0_REG || (N) == A0_REG || (TARGET_68881 && (N) == FP0_REG))
/* Define this to be true when FUNCTION_VALUE_REGNO_P is true for
more than one register. */
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. */
-
-#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);
+ m68k_function_value (VALTYPE, FUNC)
/* Define how to find the value returned by a library function
assuming the value has mode MODE.
#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 && mem_for_const_double (X) != 0 \
- && GET_CODE (mem_for_const_double (X)) == MEM \
- && symbolic_operand (XEXP (mem_for_const_double (X), 0), \
- VOIDmode))) \
- || (GET_CODE (X) == SYMBOL_REF && SYMBOL_REF_FLAG (X)) \
- || PCREL_GENERAL_OPERAND_OK)
-
-/* 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;
+ m68k_libcall_value (MODE)
/* For m68k SVR4, structures are returned using the reentrant
technique. */
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. */
+ len/16 lines, or len/4096 pages. */
#define CLEAR_INSN_CACHE(BEG, END) \
{ \
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" \
+ ("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"); \
}
-\f
-/* 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, XSTR (XEXP (DECL_RTL (FUNCTION), 0), 0)); \
- fprintf (FILE, "@PLTPC\n"); \
- } \
- else \
- { \
- fprintf (FILE, "\tjmp "); \
- assemble_name (FILE, XSTR (XEXP (DECL_RTL (FUNCTION), 0), 0)); \
- fprintf (FILE, "\n"); \
- } \
-} while (0)
+
+#define TARGET_ASM_FILE_END file_end_indicate_exec_stack
+
+#define MD_UNWIND_SUPPORT "config/m68k/linux-unwind.h"
projects / msp430-gcc.git / blobdiff