/* Output variables, constants and external declarations, for GNU compiler.
- Copyright (C) 1996, 1997, 1998, 2000, 2001 Free Software Foundation, Inc.
+ Copyright (C) 1996-2017 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. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
-#define TARGET_OBJECT_SUFFIX ".obj"
-#define TARGET_EXECUTABLE_SUFFIX ".exe"
+/* Alpha/VMS object format is not really Elf, but this makes compiling
+ crtstuff.c and dealing with shared library initialization much easier. */
+#define OBJECT_FORMAT_ELF
+
+/* Do not use TM clone registry as it currently doesn't work. Alpha/VMS
+ object is too far from ELF for supporting TM out of the box. */
+#define USE_TM_CLONE_REGISTRY 0
/* This enables certain macros in alpha.h, which will make an indirect
reference to an external symbol an invalid address. This needs to be
#define NO_EXTERNAL_INDIRECT_ADDRESS
-#include "alpha/alpha.h"
-
-#undef CPP_PREDEFINES
-#define CPP_PREDEFINES \
-"-D__ALPHA -Dvms -DVMS -D__vms__ -D__VMS__ -Asystem=vms"
-
-#undef CPP_SUBTARGET_SPEC
-#define CPP_SUBTARGET_SPEC "\
-%{mfloat-ieee:-D__IEEE_FLOAT} \
-%{mfloat-vax:-D__G_FLOAT} \
-%{!mfloat-vax:-D__IEEE_FLOAT}"
-
-/* Under OSF4, -p and -pg require -lprof1, and -lprof1 requires -lpdf. */
-
-#define LIB_SPEC "%{p:-lprof1 -lpdf} %{pg:-lprof1 -lpdf} %{a:-lprof2} -lc"
-
-/* Pass "-G 8" to ld because Alpha's CC does. Pass -O3 if we are
- optimizing, -O1 if we are not. Pass -shared, -non_shared or
- -call_shared as appropriate. Also pass -pg. */
-#define LINK_SPEC \
- "-G 8 %{O*:-O3} %{!O*:-O1} %{static:-non_shared} \
- %{!static:%{shared:-shared} %{!shared:-call_shared}} %{pg} %{taso} \
- %{rpath*}"
-
-/* We allow $'s in identifiers unless -ansi is used .. */
-
-#define DOLLARS_IN_IDENTIFIERS 2
-
-/* These match the definitions used in DECCRTL, the VMS C run-time library
-
-#define SIZE_TYPE "unsigned int"
-#define PTRDIFF_TYPE "int"
-*/
-
-/* By default, allow $ to be part of an identifier. */
-#define DOLLARS_IN_IDENTIFIERS 2
-
-#undef TARGET_DEFAULT
-#define TARGET_DEFAULT (MASK_FP|MASK_FPREGS|MASK_GAS)
-#undef TARGET_ABI_OPEN_VMS
-#define TARGET_ABI_OPEN_VMS 1
-
-#undef TARGET_NAME
-#define TARGET_NAME "OpenVMS/Alpha"
-#undef TARGET_VERSION
-#define TARGET_VERSION fprintf (stderr, " (%s)", TARGET_NAME);
+#define SUBTARGET_OS_CPP_BUILTINS() \
+ do { \
+ builtin_define ("__ALPHA"); \
+ if (TARGET_FLOAT_VAX) \
+ builtin_define ("__G_FLOAT"); \
+ else \
+ builtin_define ("__IEEE_FLOAT"); \
+ } while (0)
-/* The structure return address arrives as an "argument" on VMS. */
-#undef STRUCT_VALUE_REGNUM
-#define STRUCT_VALUE 0
#undef PCC_STATIC_STRUCT_RETURN
-/* no floating emulation. */
-#undef REAL_ARITHMETIC
-
-/* "long" is 32 bits. */
-#undef LONG_TYPE_SIZE
-#define LONG_TYPE_SIZE 32
-
-/* Pointer is 32 bits but the hardware has 64-bit addresses, sign extended. */
-#undef POINTER_SIZE
-#define POINTER_SIZE 32
-#define POINTERS_EXTEND_UNSIGNED 0
-
#define MAX_OFILE_ALIGNMENT 524288 /* 8 x 2^16 by DEC Ada Test CD40VRA */
+/* The maximum alignment 'malloc' honors. */
+#undef MALLOC_ABI_ALIGNMENT
+#define MALLOC_ABI_ALIGNMENT \
+ ((flag_vms_malloc64 && flag_vms_pointer_size != VMS_POINTER_SIZE_NONE \
+ ? 16 : 8) * BITS_PER_UNIT)
+
#undef FIXED_REGISTERS
#define FIXED_REGISTERS \
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, \
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 }
+/* List the order in which to allocate registers. Each register must be
+ listed once, even those in FIXED_REGISTERS.
+
+ We allocate in the following order:
+ $f1 (nonsaved floating-point register)
+ $f10-$f15 (likewise)
+ $f22-$f30 (likewise)
+ $f21-$f16 (likewise, but input args)
+ $f0 (nonsaved, but return value)
+ $f2-$f9 (saved floating-point registers)
+ $1 (nonsaved integer registers)
+ $22-$25 (likewise)
+ $28 (likewise)
+ $0 (likewise, but return value)
+ $21-$16 (likewise, but input args)
+ $27 (procedure value in OSF, nonsaved in NT)
+ $2-$8 (saved integer registers)
+ $9-$14 (saved integer registers)
+ $26 (return PC)
+ $15 (frame pointer)
+ $29 (global pointer)
+ $30, $31, $f31 (stack pointer and always zero/ap & fp) */
+
+#undef REG_ALLOC_ORDER
+#define REG_ALLOC_ORDER \
+ {33, \
+ 42, 43, 44, 45, 46, 47, \
+ 54, 55, 56, 57, 58, 59, 60, 61, 62, \
+ 53, 52, 51, 50, 49, 48, \
+ 32, \
+ 34, 35, 36, 37, 38, 39, 40, 41, \
+ 1, \
+ 22, 23, 24, 25, \
+ 28, \
+ 0, \
+ 21, 20, 19, 18, 17, 16, \
+ 27, \
+ 2, 3, 4, 5, 6, 7, 8, \
+ 9, 10, 11, 12, 13, 14, \
+ 26, \
+ 15, \
+ 29, \
+ 30, 31, 63 }
+
#undef HARD_FRAME_POINTER_REGNUM
#define HARD_FRAME_POINTER_REGNUM 29
#undef EPILOGUE_USES
#define EPILOGUE_USES(REGNO) ((REGNO) == 26 || (REGNO) == 29)
-#undef CAN_ELIMINATE
-#define CAN_ELIMINATE(FROM, TO) \
-((TO) != STACK_POINTER_REGNUM || ! alpha_using_fp ())
-
#undef INITIAL_ELIMINATION_OFFSET
#define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
-{ if ((FROM) == FRAME_POINTER_REGNUM) \
- (OFFSET) = alpha_sa_size () + alpha_pv_save_size (); \
- else if ((FROM) == ARG_POINTER_REGNUM) \
- (OFFSET) = (ALPHA_ROUND (alpha_sa_size () + alpha_pv_save_size () \
- + get_frame_size () \
- + current_function_pretend_args_size) \
- - current_function_pretend_args_size); \
- if ((TO) == STACK_POINTER_REGNUM) \
- (OFFSET) += ALPHA_ROUND (current_function_outgoing_args_size); \
-}
+ ((OFFSET) = alpha_vms_initial_elimination_offset(FROM, TO))
+
\f
/* Define a data type for recording info about an argument list
during the scan of that argument list. This data type should
For a library call, FNTYPE is 0. */
#undef INIT_CUMULATIVE_ARGS
-#define INIT_CUMULATIVE_ARGS(CUM,FNTYPE,LIBNAME,INDIRECT) \
+#define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, INDIRECT, N_NAMED_ARGS) \
(CUM).num_args = 0; \
(CUM).atypes[0] = (CUM).atypes[1] = (CUM).atypes[2] = I64; \
(CUM).atypes[3] = (CUM).atypes[4] = (CUM).atypes[5] = I64;
-#undef FUNCTION_ARG_ADVANCE
-#define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \
- if (MUST_PASS_IN_STACK (MODE, TYPE)) \
- (CUM).num_args += 6; \
- else \
- { \
- if ((CUM).num_args < 6) \
- (CUM).atypes[(CUM).num_args] = alpha_arg_type (MODE); \
- \
- (CUM).num_args += ALPHA_ARG_SIZE (MODE, TYPE, NAMED); \
- }
-
-/* For an arg passed partly in registers and partly in memory,
- this is the number of registers used.
- For args passed entirely in registers or entirely in memory, zero. */
-
-#undef FUNCTION_ARG_PARTIAL_NREGS
-#define FUNCTION_ARG_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED) \
-((CUM).num_args < 6 && 6 < (CUM).num_args \
- + ALPHA_ARG_SIZE (MODE, TYPE, NAMED) \
- ? 6 - (CUM).num_args : 0)
-
-/* Perform any needed actions needed for a function that is receiving a
- variable number of arguments.
-
- CUM is as for INIT_CUMULATIVE_ARGS.
-
- MODE and TYPE are the mode and type of the current parameter.
-
- PRETEND_SIZE is a variable that should be set to the amount of stack
- that must be pushed by the prolog to pretend that our caller pushed
- it.
-
- Normally, this macro will push all remaining incoming registers on the
- stack and set PRETEND_SIZE to the length of the registers pushed.
-
- For VMS, we allocate space for all 6 arg registers plus a count.
-
- However, if NO registers need to be saved, don't allocate any space.
- This is not only because we won't need the space, but because AP includes
- the current_pretend_args_size and we don't want to mess up any
- ap-relative addresses already made. */
-
-#undef SETUP_INCOMING_VARARGS
-#define SETUP_INCOMING_VARARGS(CUM,MODE,TYPE,PRETEND_SIZE,NO_RTL) \
-{ if ((CUM).num_args < 6) \
- { \
- if (! (NO_RTL)) \
- { \
- emit_move_insn (gen_rtx_REG (DImode, 1), \
- virtual_incoming_args_rtx); \
- emit_insn (gen_arg_home ()); \
- } \
- \
- PRETEND_SIZE = 7 * UNITS_PER_WORD; \
- } \
-}
-
-#undef ASM_FILE_START
-#define ASM_FILE_START(FILE) \
-{ \
- alpha_write_verstamp (FILE); \
- fprintf (FILE, "\t.set noreorder\n"); \
- fprintf (FILE, "\t.set volatile\n"); \
- ASM_OUTPUT_SOURCE_FILENAME (FILE, main_input_filename); \
-}
-
-#undef ASM_OUTPUT_FLOAT
-#define ASM_OUTPUT_FLOAT(FILE,VALUE) \
- { \
- if (REAL_VALUE_ISINF (VALUE) \
- || REAL_VALUE_ISNAN (VALUE) \
- || REAL_VALUE_MINUS_ZERO (VALUE)) \
- { \
- long t; \
- REAL_VALUE_TO_TARGET_SINGLE ((VALUE), t); \
- fprintf (FILE, "\t.long 0x%lx\n", t & 0xffffffff); \
- } \
- else \
- { \
- char str[30]; \
- REAL_VALUE_TO_DECIMAL ((VALUE), "%.20e", str); \
- fprintf (FILE, "\t.%c_floating %s\n", (TARGET_FLOAT_VAX)?'f':'s', str); \
- } \
- }
-
-#define LINK_SECTION_ASM_OP "\t.link"
-#define READONLY_SECTION_ASM_OP "\t.rdata"
-#define LITERALS_SECTION_ASM_OP "\t.literals"
+#define DEFAULT_PCC_STRUCT_RETURN 0
+
+/* Even though pointers are 64bits, only 32bit ever remain significant in code
+ addresses. */
+#define MASK_RETURN_ADDR \
+ (flag_vms_pointer_size == VMS_POINTER_SIZE_NONE \
+ ? constm1_rtx \
+ : GEN_INT (0xffffffff))
+
+#undef ASM_WEAKEN_LABEL
+#define ASM_WEAKEN_LABEL(FILE, NAME) \
+ do { fputs ("\t.weak\t", FILE); assemble_name (FILE, NAME); \
+ fputc ('\n', FILE); } while (0)
+
+#define READONLY_DATA_SECTION_ASM_OP "\t.rdata"
#define CTORS_SECTION_ASM_OP "\t.ctors"
#define DTORS_SECTION_ASM_OP "\t.dtors"
-
-#undef EXTRA_SECTIONS
-#define EXTRA_SECTIONS in_link, in_rdata, in_literals, in_ctors, in_dtors
-
-#undef EXTRA_SECTION_FUNCTIONS
-#define EXTRA_SECTION_FUNCTIONS \
-void \
-readonly_section () \
-{ \
- if (in_section != in_rdata) \
- { \
- fprintf (asm_out_file, "%s\n", READONLY_SECTION_ASM_OP); \
- in_section = in_rdata; \
- } \
-} \
-void \
-link_section () \
-{ \
- if (in_section != in_link) \
- { \
- fprintf (asm_out_file, "%s\n", LINK_SECTION_ASM_OP); \
- in_section = in_link; \
- } \
-} \
-void \
-literals_section () \
-{ \
- if (in_section != in_literals) \
- { \
- fprintf (asm_out_file, "%s\n", LITERALS_SECTION_ASM_OP); \
- in_section = in_literals; \
- } \
-} \
-void \
-ctors_section () \
-{ \
- if (in_section != in_ctors) \
- { \
- fprintf (asm_out_file, "%s\n", CTORS_SECTION_ASM_OP); \
- in_section = in_ctors; \
- } \
-} \
-void \
-dtors_section () \
-{ \
- if (in_section != in_dtors) \
- { \
- fprintf (asm_out_file, "%s\n", DTORS_SECTION_ASM_OP); \
- in_section = in_dtors; \
- } \
-}
-
-extern void readonly_section PARAMS ((void));
-extern void link_section PARAMS ((void));
-extern void literals_section PARAMS ((void));
-extern void ctors_section PARAMS ((void));
-extern void dtors_section PARAMS ((void));
+#define SDATA_SECTION_ASM_OP "\t.sdata"
+#define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \
+ asm (SECTION_OP "\n\t.long " #FUNC"\n");
#undef ASM_OUTPUT_ADDR_DIFF_ELT
-#define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) abort ()
#undef ASM_OUTPUT_ADDR_VEC_ELT
#define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \
fprintf (FILE, "\t.quad $L%d\n", (VALUE))
-#undef READONLY_DATA_SECTION
-#define READONLY_DATA_SECTION readonly_section
-
-#define ASM_FILE_END(FILE) alpha_write_linkage (FILE);
-
#undef CASE_VECTOR_MODE
#define CASE_VECTOR_MODE DImode
#undef CASE_VECTOR_PC_RELATIVE
#undef ASM_OUTPUT_CASE_LABEL
#define ASM_OUTPUT_CASE_LABEL(FILE,PREFIX,NUM,TABLEINSN) \
-{ ASM_OUTPUT_ALIGN (FILE, 3); ASM_OUTPUT_INTERNAL_LABEL (FILE, PREFIX, NUM); }
+{ ASM_OUTPUT_ALIGN (FILE, 3); (*targetm.asm_out.internal_label) (FILE, PREFIX, NUM); }
/* This says how to output assembler code to declare an
uninitialized external linkage data object. */
#define COMMON_ASM_OP "\t.comm\t"
-#undef ASM_OUTPUT_ALIGNED_COMMON
-#define ASM_OUTPUT_ALIGNED_COMMON(FILE, NAME, SIZE, ALIGN) \
-do { \
- fprintf ((FILE), "%s", COMMON_ASM_OP); \
- assemble_name ((FILE), (NAME)); \
- fprintf ((FILE), ",%u,%u\n", (SIZE), (ALIGN) / BITS_PER_UNIT); \
-} while (0)
-
+#undef ASM_OUTPUT_ALIGNED_DECL_COMMON
+#define ASM_OUTPUT_ALIGNED_DECL_COMMON(FILE, DECL, NAME, SIZE, ALIGN) \
+ vms_output_aligned_decl_common (FILE, DECL, NAME, SIZE, ALIGN)
\f
-/* Output assembler code for a block containing the constant parts
- of a trampoline, leaving space for the variable parts.
-
- The trampoline should set the static chain pointer to value placed
- into the trampoline and should branch to the specified routine.
- Note that $27 has been set to the address of the trampoline, so we can
- use it for addressability of the two data items. Trampolines are always
- aligned to FUNCTION_BOUNDARY, which is 64 bits. */
-
-#undef TRAMPOLINE_TEMPLATE
-#define TRAMPOLINE_TEMPLATE(FILE) \
-{ \
- fprintf (FILE, "\t.quad 0\n"); \
- fprintf (FILE, "\t.linkage __tramp\n"); \
- fprintf (FILE, "\t.quad 0\n"); \
-}
-
-/* Length in units of the trampoline for entering a nested function. */
-
-#undef TRAMPOLINE_SIZE
-#define TRAMPOLINE_SIZE 32
-
-/* 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. */
-
-#undef INITIALIZE_TRAMPOLINE
-#define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT) \
- alpha_initialize_trampoline (TRAMP, FNADDR, CXT, 16, 24, -1)
-
-/* A C statement (sans semicolon) to output an element in the table of
- global constructors. */
-#define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME) \
- do { \
- ctors_section (); \
- fprintf (FILE, "\t.quad "); \
- assemble_name (FILE, NAME); \
- fprintf (FILE, "\n"); \
- } while (0)
-
-/* A C statement (sans semicolon) to output an element in the table of
- global destructors. */
-#define ASM_OUTPUT_DESTRUCTOR(FILE,NAME) \
- do { \
- dtors_section (); \
- fprintf (FILE, "\t.quad "); \
- assemble_name (FILE, NAME); \
- fprintf (FILE, "\n"); \
- } while (0)
-
-#undef SDB_DEBUGGING_INFO
-#undef MIPS_DEBUGGING_INFO
-#undef DBX_DEBUGGING_INFO
-
-#define DWARF2_DEBUGGING_INFO
+/* Control how constructors and destructors are emitted. */
+#define TARGET_ASM_CONSTRUCTOR vms_asm_out_constructor
+#define TARGET_ASM_DESTRUCTOR vms_asm_out_destructor
+
+#define DWARF2_DEBUGGING_INFO 1
+#define VMS_DEBUGGING_INFO 1
+
+#define DWARF2_UNWIND_INFO 1
+
+#undef EH_RETURN_HANDLER_RTX
+#define EH_RETURN_HANDLER_RTX \
+ gen_rtx_MEM (Pmode, plus_constant (Pmode, stack_pointer_rtx, 8))
+
+#define LINK_EH_SPEC "vms-dwarf2eh.o%s "
+#define LINK_GCC_C_SEQUENCE_SPEC "%G"
/* 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) \
fprintf (FILE, "\t.align %d\n", LOG);
-#define ASM_OUTPUT_SECTION(FILE,SECTION) \
- (strcmp (SECTION, ".text") == 0) \
- ? text_section () \
- : named_section (NULL_TREE, SECTION, 0), \
- ASM_OUTPUT_ALIGN (FILE, 0) \
-
-#define ASM_OUTPUT_SECTION_NAME(FILE,DECL,NAME,RELOC) \
- do \
- { \
- const char *flags; \
- int ovr = 0; \
- if (DECL && DECL_MACHINE_ATTRIBUTES (DECL) \
- && lookup_attribute \
- ("overlaid", DECL_MACHINE_ATTRIBUTES (DECL))) \
- flags = ",OVR", ovr = 1; \
- else if (strncmp (NAME,".debug", 6) == 0) \
- flags = ",NOWRT"; \
- else \
- flags = ""; \
- fputc ('\n', (FILE)); \
- fprintf (FILE, ".section\t%s%s\n", NAME, flags); \
- if (ovr) \
- (NAME) = ""; \
- } while (0)
+/* This is how to advance the location counter by SIZE bytes. */
+
+#define ASM_OUTPUT_SKIP(FILE,SIZE) \
+ fprintf (FILE, "\t.space " HOST_WIDE_INT_PRINT_UNSIGNED"\n", (SIZE))
+
+/* This says how to output an assembler line
+ to define a global common symbol. */
+
+#define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE,ROUNDED) \
+( fputs ("\t.lcomm ", (FILE)), \
+ assemble_name ((FILE), (NAME)), \
+ fprintf ((FILE), "," HOST_WIDE_INT_PRINT_UNSIGNED"\n", (SIZE)))
+
+/* Switch into a generic section. */
+#define TARGET_ASM_NAMED_SECTION vms_asm_named_section
-#define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2) \
- do { literals_section(); \
- fprintf ((FILE), "\t"); \
- assemble_name (FILE, LABEL1); \
- fprintf (FILE, " = "); \
- assemble_name (FILE, LABEL2); \
- fprintf (FILE, "\n"); \
- } while (0)
+#define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2) \
+ do \
+ { \
+ fprintf ((FILE), "\t"); \
+ assemble_name (FILE, LABEL1); \
+ fprintf (FILE, " = "); \
+ assemble_name (FILE, LABEL2); \
+ fprintf (FILE, "\n"); \
+ } \
+ while (0)
#undef PREFERRED_DEBUGGING_TYPE
-#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
+#define PREFERRED_DEBUGGING_TYPE VMS_AND_DWARF2_DEBUG
-#undef ASM_FORMAT_PRIVATE_NAME
-#define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \
-( (OUTPUT) = (char *) alloca (strlen ((NAME)) + 12), \
- sprintf ((OUTPUT), "%s___%d", (NAME), (LABELNO)))
+#define ASM_PN_FORMAT "%s___%lu"
/* ??? VMS uses different linkage. */
-#undef ASM_OUTPUT_MI_THUNK
+#undef TARGET_ASM_OUTPUT_MI_THUNK
#undef ASM_SPEC
#undef ASM_FINAL_SPEC
+
+/* The VMS convention is to always provide minimal debug info
+ for a traceback unless specifically overridden.
+
+ Because ASM_OUTPUT_ADDR_DIFF_ELT is not defined for alpha-vms,
+ jump tables cannot be output for PIC code, because you can't put
+ an absolute address in a readonly section. Putting the table in
+ a writable section is a security hole. Therefore, we unset the
+ flag_jump_tables flag, forcing switch statements to be expanded
+ using decision trees. There are probably other ways to address
+ this issue, but using a decision tree is clearly safe. */
+
+#undef SUBTARGET_OVERRIDE_OPTIONS
+#define SUBTARGET_OVERRIDE_OPTIONS \
+do { \
+ if (write_symbols == NO_DEBUG \
+ && debug_info_level == DINFO_LEVEL_NONE) \
+ { \
+ write_symbols = VMS_DEBUG; \
+ debug_info_level = DINFO_LEVEL_TERSE; \
+ } \
+ if (flag_pic) \
+ flag_jump_tables = 0; \
+} while (0)
+
#undef LINK_SPEC
+#if HAVE_GNU_LD
+/* GNU-ld built-in linker script already handles the dwarf2 debug sections. */
+#define LINK_SPEC "%{shared} %{v}"
+#else
+/* Link with vms-dwarf2.o if -g (except -g0). This causes the
+ VMS link to pull all the dwarf2 debug sections together. */
+#define LINK_SPEC "%{g0} %{g*:-g vms-dwarf2.o%s} %{shared} %{v} %{map}"
+#endif
+
#undef STARTFILE_SPEC
-#define ASM_SPEC "-nocpp %{pg}"
-#define LINK_SPEC "%{g3:-g3} %{g0:-g0} %{shared:-shared} %{v:-v}"
+#define STARTFILE_SPEC "%{!shared:crt0.o%s crtbegin.o%s} \
+ %{!static:%{shared:crtbeginS.o%s}}"
+
+#define ENDFILE_SPEC "%{!shared:crtend.o%s} %{!static:%{shared:crtendS.o%s}}"
-/* Define the names of the division and modulus functions. */
-#define DIVSI3_LIBCALL "OTS$DIV_I"
-#define DIVDI3_LIBCALL "OTS$DIV_L"
-#define UDIVSI3_LIBCALL "OTS$DIV_UI"
-#define UDIVDI3_LIBCALL "OTS$DIV_UL"
-#define MODSI3_LIBCALL "OTS$REM_I"
-#define MODDI3_LIBCALL "OTS$REM_L"
-#define UMODSI3_LIBCALL "OTS$REM_UI"
-#define UMODDI3_LIBCALL "OTS$REM_UL"
+#define INIT_SECTION_ASM_OP "\t.section LIB$INITIALIZE,GBL,NOWRT"
-#define DIR_SEPARATOR ']'
+#define LONGLONG_STANDALONE 1
-#define PREFIX "GNU_ROOT:"
+#undef TARGET_VALID_POINTER_MODE
+#define TARGET_VALID_POINTER_MODE vms_valid_pointer_mode
-/* XXX Really? Even with modern CRTL? */
-#define NEED_ATEXIT
+/* Default values for _CRTL_VER and _VMS_VER. */
+#define VMS_DEFAULT_CRTL_VER 70320000
+#define VMS_DEFAULT_VMS_VER 70320000
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