147 lines
4.4 KiB
C
147 lines
4.4 KiB
C
/* IA32 VxWorks target definitions for GNU compiler.
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Copyright (C) 2003-2021 Free Software Foundation, Inc.
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Updated by CodeSourcery, LLC.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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GCC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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/* VxWorks after 7 SR0600 use the ELF ABI and the system environment is llvm
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based. Earlier versions have GNU based environment components and use the
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same ABI as Solaris 2. */
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#if TARGET_VXWORKS7
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#undef VXWORKS_PERSONALITY
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#define VXWORKS_PERSONALITY "llvm"
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#else
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#undef ASM_OUTPUT_ALIGNED_BSS
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#define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
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asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN)
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#undef TARGET_SUBTARGET_DEFAULT
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#define TARGET_SUBTARGET_DEFAULT \
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(MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS | MASK_VECT8_RETURNS)
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/* Provide our target specific DBX_REGISTER_NUMBER. VxWorks relies on
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the SVR4 numbering. */
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#undef DBX_REGISTER_NUMBER
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#define DBX_REGISTER_NUMBER(n) \
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(TARGET_64BIT ? dbx64_register_map[n] : svr4_dbx_register_map[n])
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#undef PTRDIFF_TYPE
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#define PTRDIFF_TYPE (TARGET_LP64 ? "long int" : "int")
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#undef SIZE_TYPE
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#define SIZE_TYPE (TARGET_LP64 ? "long unsigned int" : "unsigned int")
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/* We cannot use PC-relative accesses for VxWorks PIC because there is no
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fixed gap between segments. */
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#undef ASM_PREFERRED_EH_DATA_FORMAT
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#if TARGET_64BIT_DEFAULT
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#undef VXWORKS_SYSCALL_LIBS_RTP
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#define VXWORKS_SYSCALL_LIBS_RTP "-lsyscall"
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#endif
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#endif
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/* CPU macro definitions, ordered to account for VxWorks 7 not
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supporting CPUs older than PENTIUM4 since SR0650. */
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#define VX_CPUDEF(CPU) builtin_define(VX_CPU_PREFIX "CPU=" #CPU)
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#define VX_CPUVDEF(CPU) builtin_define(VX_CPU_PREFIX "CPU_VARIANT=" #CPU)
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#define TARGET_OS_CPP_BUILTINS() \
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do \
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{ \
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VXWORKS_OS_CPP_BUILTINS (); \
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if (TARGET_64BIT) \
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VX_CPUDEF (X86_64); \
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else if (TARGET_PENTIUM4) \
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{ \
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VX_CPUDEF (PENTIUM4); \
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VX_CPUVDEF (PENTIUM4); \
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} \
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else if (TARGET_CORE2) \
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VX_CPUDEF (CORE2); \
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else if (TARGET_NEHALEM) \
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VX_CPUDEF (NEHALEM); \
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else if (TARGET_SANDYBRIDGE) \
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VX_CPUDEF (SANDYBRIDGE); \
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else if (TARGET_HASWELL) \
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VX_CPUDEF (HASWELL); \
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else if (TARGET_SILVERMONT) \
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VX_CPUDEF (SILVERMONT); \
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else if (TARGET_SKYLAKE || TARGET_SKYLAKE_AVX512) \
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VX_CPUDEF (SKYLAKE); \
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else if (TARGET_GOLDMONT) \
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VX_CPUDEF (GOLDMONT); \
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else if (TARGET_VXWORKS7) \
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VX_CPUDEF (PENTIUM4); \
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else if (TARGET_386) \
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VX_CPUDEF (I80386); \
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else if (TARGET_486) \
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VX_CPUDEF (I80486); \
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else if (TARGET_PENTIUM) \
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{ \
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VX_CPUDEF (PENTIUM); \
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VX_CPUVDEF (PENTIUM); \
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} \
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else if (TARGET_PENTIUMPRO) \
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{ \
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VX_CPUDEF (PENTIUM2); \
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VX_CPUVDEF (PENTIUMPRO); \
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} \
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else \
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VX_CPUDEF (I80386); \
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} \
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while (0)
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#undef CPP_SPEC
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#define CPP_SPEC VXWORKS_ADDITIONAL_CPP_SPEC
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#undef CC1_SPEC
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#define CC1_SPEC VXWORKS_CC1_SPEC
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#undef LIB_SPEC
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#define LIB_SPEC VXWORKS_LIB_SPEC
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#undef STARTFILE_SPEC
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#define STARTFILE_SPEC VXWORKS_STARTFILE_SPEC
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#undef ENDFILE_SPEC
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#define ENDFILE_SPEC VXWORKS_ENDFILE_SPEC
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#undef LINK_SPEC
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#define LINK_SPEC VXWORKS_LINK_SPEC
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#undef SUBTARGET_SWITCHES
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#define SUBTARGET_SWITCHES EXTRA_SUBTARGET_SWITCHES
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#undef SUBTARGET_OVERRIDE_OPTIONS
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#define SUBTARGET_OVERRIDE_OPTIONS VXWORKS_OVERRIDE_OPTIONS
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/* No _mcount profiling on VxWorks. */
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#undef FUNCTION_PROFILER
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#define FUNCTION_PROFILER(FILE,LABELNO) VXWORKS_FUNCTION_PROFILER(FILE,LABELNO)
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/* Define this to be nonzero if static stack checking is supported. */
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#define STACK_CHECK_STATIC_BUILTIN 1
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/* This platform supports the probing method of stack checking (RTP mode).
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8K is reserved in the stack to propagate exceptions in case of overflow.
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On 64-bit targets, we double that size. */
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#define STACK_CHECK_PROTECT (TARGET_64BIT_DEFAULT ? 16 * 1024 : 8 * 1024)
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