-/* Definitions for StrongARM running FreeBSD using the ELF format
- Copyright (C) 2001 Free Software Foundation, Inc.
- Contributed by David E. O'Brien <obrien@FreeBSD.org> and BSDi.
+/* Definitions of target machine for GNU compiler, FreeBSD/arm version.
+ Copyright (C) 2002-2020 Free Software Foundation, Inc.
+ Contributed by Wasabi Systems, Inc.
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 2, or (at your
+ 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
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 COPYING. If not, write to
- the Free Software Foundation, 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ Under Section 7 of GPL version 3, you are granted additional
+ permissions described in the GCC Runtime Library Exception, version
+ 3.1, as published by the Free Software Foundation.
+ 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/>. */
#undef SUBTARGET_CPP_SPEC
#define SUBTARGET_CPP_SPEC FBSD_CPP_SPEC
-
-/************************[ Target stuff ]***********************************/
-
-/* Define the actual types of some ANSI-mandated types.
- Needs to agree with <machine/ansi.h>. GCC defaults come from c-decl.c,
- c-common.c, and config/<arch>/<arch>.h. */
-
-/* arm.h gets this wrong for FreeBSD. We use the GCC defaults instead. */
-
-#undef SIZE_TYPE
-#define SIZE_TYPE "unsigned int"
-
-#undef PTRDIFF_TYPE
-#define PTRDIFF_TYPE "int"
-
-/* We use the GCC defaults here. */
-#undef WCHAR_TYPE
+#undef SUBTARGET_EXTRA_SPECS
+#define SUBTARGET_EXTRA_SPECS \
+ { "subtarget_extra_asm_spec", SUBTARGET_EXTRA_ASM_SPEC }, \
+ { "subtarget_asm_float_spec", SUBTARGET_ASM_FLOAT_SPEC }, \
+ { "fbsd_dynamic_linker", FBSD_DYNAMIC_LINKER }
+
+#undef SUBTARGET_EXTRA_ASM_SPEC
+#define SUBTARGET_EXTRA_ASM_SPEC \
+ "%{mabi=apcs-gnu|mabi=atpcs:-meabi=gnu;:-meabi=5} " TARGET_FIX_V4BX_SPEC " \
+ %{" FPIE_OR_FPIC_SPEC ":-k}"
+
+#undef SUBTARGET_ASM_FLOAT_SPEC
+#ifdef TARGET_FREEBSD_ARM_HARD_FLOAT
+/* Default to full vfp if we build for arm*hf. */
+#define SUBTARGET_ASM_FLOAT_SPEC "%{!mfpu=*:-mfpu=vfp}"
+#else
+#define SUBTARGET_ASM_FLOAT_SPEC "%{!mfpu=*:-mfpu=softvfp}"
+#endif
+
+#undef LINK_SPEC
+#define LINK_SPEC " \
+ %{p:%nconsider using `-pg' instead of `-p' with gprof (1)} \
+ %{v:-V} \
+ %{assert*} %{R*} %{rpath*} %{defsym*} \
+ %{shared:-Bshareable %{h*} %{soname*}} \
+ %{!shared: \
+ %{!static: \
+ %{rdynamic:-export-dynamic} \
+ %{!dynamic-linker:-dynamic-linker %(fbsd_dynamic_linker) }} \
+ %{static:-Bstatic}} \
+ %{!static:--hash-style=both --enable-new-dtags} \
+ %{symbolic:-Bsymbolic} \
+ -X %{mbig-endian:-EB} %{mlittle-endian:-EL}"
+
+/* TARGET_BIG_ENDIAN_DEFAULT is set in
+ config.gcc for big endian configurations. */
+#if TARGET_BIG_ENDIAN_DEFAULT
+#define TARGET_ENDIAN_DEFAULT MASK_BIG_END
+#define TARGET_ENDIAN_OPTION "mbig-endian"
+#define TARGET_LINKER_EMULATION "armelfb_fbsd"
+#else
+#define TARGET_ENDIAN_DEFAULT 0
+#define TARGET_ENDIAN_OPTION "mlittle-endian"
+#define TARGET_LINKER_EMULATION "armelf_fbsd"
+#endif
+
+#undef SUBTARGET_EXTRA_LINK_SPEC
+#define SUBTARGET_EXTRA_LINK_SPEC " -m " TARGET_LINKER_EMULATION " -p"
+
+#undef TARGET_OS_CPP_BUILTINS
+#define TARGET_OS_CPP_BUILTINS() \
+ do \
+ { \
+ FBSD_TARGET_OS_CPP_BUILTINS (); \
+ TARGET_BPABI_CPP_BUILTINS (); \
+ } \
+ while (false)
+
+/* We default to a soft-float ABI so that binaries can run on all
+ target hardware. */
+#undef TARGET_DEFAULT_FLOAT_ABI
+#ifdef TARGET_FREEBSD_ARM_HARD_FLOAT
+#define TARGET_DEFAULT_FLOAT_ABI ARM_FLOAT_ABI_HARD
+#else
+#define TARGET_DEFAULT_FLOAT_ABI ARM_FLOAT_ABI_SOFT
+#endif
+
+#undef ARM_DEFAULT_ABI
+
+/* AACPS_LINUX has access to kernel atomic ops while we don't.
+ But AACPS defaults to short_enums. */
+#define ARM_DEFAULT_ABI ARM_ABI_AAPCS_LINUX
+
+#undef TARGET_DEFAULT
+#define TARGET_DEFAULT (MASK_INTERWORK | TARGET_ENDIAN_DEFAULT)
+
+/* We do not have any MULTILIB_OPTIONS specified, so there are no
+ MULTILIB_DEFAULTS. */
+#undef MULTILIB_DEFAULTS
+
+/* Use the AAPCS type for wchar_t, override the one from config/freebsd.h. */
+#undef WCHAR_TYPE
+#define WCHAR_TYPE "unsigned int"
#undef WCHAR_TYPE_SIZE
-#define WCHAR_TYPE_SIZE 32
-
-#undef SUBTARGET_CPU_DEFAULT
-#define SUBTARGET_CPU_DEFAULT TARGET_CPU_strongarm
-
-#undef ARM_OS_NAME
-#define ARM_OS_NAME "FreeBSD"
+#define WCHAR_TYPE_SIZE BITS_PER_WORD
+
+/* FreeBSD 10 does not support unaligned access for armv6 and up.
+ Unaligned access support was added in FreeBSD 11. */
+#if FBSD_MAJOR < 11
+#define SUBTARGET_OVERRIDE_INTERNAL_OPTIONS \
+do { \
+ if (opts_set->x_unaligned_access == 1) \
+ warning (0, "target OS does not support unaligned accesses"); \
+ if (opts->x_unaligned_access) \
+ opts->x_unaligned_access = 0; \
+} while (0)
+#endif
+
+#undef MAX_SYNC_LIBFUNC_SIZE
+#define MAX_SYNC_LIBFUNC_SIZE 4 /* UNITS_PER_WORD not defined yet. */
+
+/* FreeBSD does its profiling differently to the Acorn compiler. We
+ don't need a word following the mcount call; and to skip it
+ requires either an assembly stub or use of fomit-frame-pointer when
+ compiling the profiling functions. Since we break Acorn CC
+ compatibility below a little more won't hurt. */
+
+#undef ARM_FUNCTION_PROFILER
+#define ARM_FUNCTION_PROFILER(STREAM,LABELNO) \
+{ \
+ asm_fprintf (STREAM, "\tmov\t%Rip, %Rlr\n"); \
+ asm_fprintf (STREAM, "\tbl\t__mcount%s\n", \
+ (TARGET_ARM && NEED_PLT_RELOC) \
+ ? "(PLT)" : ""); \
+}
+
+/* Clear the instruction cache from `BEG' to `END'. This makes a
+ call to the ARM_SYNC_ICACHE architecture specific syscall. */
+#define CLEAR_INSN_CACHE(BEG, END) \
+do \
+ { \
+ extern int sysarch (int number, void *args); \
+ struct \
+ { \
+ unsigned int addr; \
+ int len; \
+ } s; \
+ s.addr = (unsigned int) (BEG); \
+ s.len = (END) - (BEG); \
+ (void) sysarch (0, &s); \
+ } \
+while (0)
+
+/* This is how we tell the assembler that two symbols have the same value. */
+#define ASM_OUTPUT_DEF(FILE, NAME1, NAME2) \
+ do \
+ { \
+ assemble_name (FILE, NAME1); \
+ fputs (" = ", FILE); \
+ assemble_name (FILE, NAME2); \
+ fputc ('\n', FILE); \
+ } \
+ while (0)
+
+/* Add .note.GNU-stack. */
+#undef NEED_INDICATE_EXEC_STACK
+#define NEED_INDICATE_EXEC_STACK 1
+
+#define ARM_TARGET2_DWARF_FORMAT (DW_EH_PE_pcrel | DW_EH_PE_indirect)
-#undef TARGET_VERSION
-#define TARGET_VERSION fprintf (stderr, " (FreeBSD/StrongARM ELF)");
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