diff options
Diffstat (limited to 'gcc-4.9/gcc/config/m68k/netbsd-elf.h')
| -rw-r--r-- | gcc-4.9/gcc/config/m68k/netbsd-elf.h | 297 |
1 files changed, 297 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/config/m68k/netbsd-elf.h b/gcc-4.9/gcc/config/m68k/netbsd-elf.h new file mode 100644 index 000000000..be8919338 --- /dev/null +++ b/gcc-4.9/gcc/config/m68k/netbsd-elf.h @@ -0,0 +1,297 @@ +/* Definitions of target machine for GNU compiler, + for m68k (including m68010) NetBSD platforms using the + ELF object format. + Copyright (C) 2002-2014 Free Software Foundation, Inc. + Contributed by Wasabi Systems. Inc. + + This file is derived from <m68k/m68kv4.h>, <m68k/m68kelf.h>, + and <m68k/linux.h>. + +This file is part of GCC. + +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 3, or (at your option) +any later version. + +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 GCC; see the file COPYING3. If not see +<http://www.gnu.org/licenses/>. */ + +#define TARGET_OS_CPP_BUILTINS() \ + do \ + { \ + NETBSD_OS_CPP_BUILTINS_ELF(); \ + builtin_define ("__m68k__"); \ + builtin_define ("__SVR4_ABI__"); \ + builtin_define ("__motorola__"); \ + if (TARGET_HARD_FLOAT) \ + builtin_define ("__HAVE_FPU__"); \ + } \ + while (0) + +/* Don't try using XFmode on the 68010. */ +#undef LONG_DOUBLE_TYPE_SIZE +#define LONG_DOUBLE_TYPE_SIZE (TARGET_68020 ? 80 : 64) + +#undef LIBGCC2_LONG_DOUBLE_TYPE_SIZE +#ifdef __mc68010__ +#define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 64 +#else +#define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 80 +#endif + +#undef SUBTARGET_EXTRA_SPECS +#define SUBTARGET_EXTRA_SPECS \ + { "netbsd_entry_point", NETBSD_ENTRY_POINT }, + + +/* Provide a CPP_SPEC appropriate for NetBSD m68k targets. Currently we + deal with the GCC option '-posix', as well as an indication as to + whether or not use of the FPU is allowed. */ + +#undef CPP_SPEC +#define CPP_SPEC NETBSD_CPP_SPEC + + +/* Provide an ASM_SPEC appropriate for NetBSD m68k ELF targets. We need + to pass PIC code generation options. */ + +#undef ASM_SPEC +#define ASM_SPEC "%(asm_cpu_spec) %{fpic|fpie:-k} %{fPIC|fPIE:-k -K}" + +/* Provide a LINK_SPEC appropriate for a NetBSD/m68k ELF target. */ + +#undef LINK_SPEC +#define LINK_SPEC NETBSD_LINK_SPEC_ELF + +#define NETBSD_ENTRY_POINT "_start" + +/* Output assembler code to FILE to increment profiler label # LABELNO + for profiling a function only. */ + +#undef FUNCTION_PROFILER +#define FUNCTION_PROFILER(FILE, LABELNO) \ +do \ + { \ + 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"); \ + } \ +while (0) + + +/* Make gcc agree with <machine/ansi.h> */ + +#undef SIZE_TYPE +#define SIZE_TYPE "unsigned int" + +#undef PTRDIFF_TYPE +#define PTRDIFF_TYPE "int" + + +/* XXX + Here is a bunch of stuff lifted from m68kelf.h. We don't use that + file directly, because it has a lot of baggage we don't want. */ + + +/* 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) lables. + 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 "" + + +#undef ASM_COMMENT_START +#define ASM_COMMENT_START "|" + + +/* Currently, JUMP_TABLES_IN_TEXT_SECTION must be defined in order to + keep switch tables in the text section. */ + +#undef JUMP_TABLES_IN_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_COLDFIRE) \ + { \ + if (ADDRESS_REG_P (operands[0])) \ + return "jmp %%pc@(2,%0:l)"; \ + else \ + 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) \ +do \ + { \ + if ((LOG) > 0) \ + fprintf ((FILE), "%s%u\n", ALIGN_ASM_OP, 1 << (LOG)); \ + } \ +while (0) + + +/* 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" + + +#undef ASM_OUTPUT_ALIGNED_BSS +#define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \ + asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN) + + +#undef ASM_OUTPUT_COMMON +#define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED) \ +( fputs (".comm ", (FILE)), \ + assemble_name ((FILE), (NAME)), \ + fprintf ((FILE), ",%u\n", (int)(SIZE))) + +#undef ASM_OUTPUT_LOCAL +#define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED) \ +( fputs (".lcomm ", (FILE)), \ + assemble_name ((FILE), (NAME)), \ + fprintf ((FILE), ",%u\n", (int)(SIZE))) + + +/* XXX + This is the end of the chunk lifted from m68kelf.h */ + + +/* XXX + The following chunk is more or less lifted from m68kv4.h. + We'd like to just #include that file, but it has not yet + been converted to the new include style. + + Should there be a m68kv4-abi.h ?? */ + + +/* 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 M68K_STRUCT_VALUE_REGNUM +#define M68K_STRUCT_VALUE_REGNUM A0_REG + + +/* Register in which static-chain is passed to a function. The + default isn m68k.h is a0, but that is already the struct value + regnum. Make it a1 instead. */ + +#undef STATIC_CHAIN_REGNUM +#define STATIC_CHAIN_REGNUM A1_REG +#undef M68K_STATIC_CHAIN_REG_NAME +#define M68K_STATIC_CHAIN_REG_NAME REGISTER_PREFIX "a1" + + +/* Now to renumber registers for dbx and gdb. + We use the Sun-3 convention, which is: + floating point registers have numbers 18 to 25, not + 16 to 23 as they do in the compiler. */ + +#undef DBX_REGISTER_NUMBER +#define DBX_REGISTER_NUMBER(REGNO) ((REGNO) < 16 ? (REGNO) : (REGNO) + 2) + + +/* 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) == 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. */ + +#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) \ + m68k_function_value (VALTYPE, FUNC) + + +/* 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) \ + m68k_libcall_value (MODE) + + +/* Boundary (in *bits*) on which stack pointer should be aligned. + The m68k/SVR4 convention is to keep the stack pointer longword aligned. */ + +#undef STACK_BOUNDARY +#define STACK_BOUNDARY 32 + + +/* Alignment of field after `int : 0' in a structure. + For m68k/SVR4, this is the next longword boundary. */ + +#undef EMPTY_FIELD_BOUNDARY +#define EMPTY_FIELD_BOUNDARY 32 + + +/* No data type wants to be aligned rounder than this. + For m68k/SVR4, some types (doubles for example) are aligned on 8 byte + boundaries */ + +#undef BIGGEST_ALIGNMENT +#define BIGGEST_ALIGNMENT 64 + + +/* The svr4 ABI for the m68k says that records and unions are returned + in memory. */ + +#undef DEFAULT_PCC_STRUCT_RETURN +#define DEFAULT_PCC_STRUCT_RETURN 1 + +/* XXX + This is the end of the chunk lifted from m68kv4.h */ |