/* Output variables, constants and external declarations, for GNU compiler.
- Copyright (C) 1996, 1997, 1998, 2000, 2001, 2002, 2004, 2005, 2007
- Free Software Foundation, Inc.
+ Copyright (C) 1996-2017 Free Software Foundation, Inc.
This file is part of GCC.
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
-#define TARGET_OS_CPP_BUILTINS() \
+#define SUBTARGET_OS_CPP_BUILTINS() \
do { \
- builtin_define_std ("vms"); \
- builtin_define_std ("VMS"); \
- builtin_define ("__ALPHA"); \
- builtin_assert ("system=vms"); \
- if (TARGET_FLOAT_VAX) \
- builtin_define ("__G_FLOAT"); \
- else \
- builtin_define ("__IEEE_FLOAT"); \
+ builtin_define ("__ALPHA"); \
+ if (TARGET_FLOAT_VAX) \
+ builtin_define ("__G_FLOAT"); \
+ else \
+ builtin_define ("__IEEE_FLOAT"); \
} while (0)
-#undef TARGET_DEFAULT
-#define TARGET_DEFAULT (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);
-
#undef PCC_STATIC_STRUCT_RETURN
-/* "long" is 32 bits, but 64 bits for Ada. */
-#undef LONG_TYPE_SIZE
-#define LONG_TYPE_SIZE 32
-#define ADA_LONG_TYPE_SIZE 64
-
-/* 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, \
#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) \
-{ switch (FROM) \
- { \
- case FRAME_POINTER_REGNUM: \
- (OFFSET) = alpha_sa_size () + alpha_pv_save_size (); \
- break; \
- case ARG_POINTER_REGNUM: \
- (OFFSET) = (ALPHA_ROUND (alpha_sa_size () + alpha_pv_save_size () \
- + get_frame_size () \
- + crtl->args.pretend_args_size) \
- - crtl->args.pretend_args_size); \
- break; \
- default: \
- gcc_unreachable (); \
- } \
- if ((TO) == STACK_POINTER_REGNUM) \
- (OFFSET) += ALPHA_ROUND (crtl->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
(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 (targetm.calls.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); \
- }
-
-/* ABI has stack checking, but it's broken. */
-#undef STACK_CHECK_BUILTIN
-#define STACK_CHECK_BUILTIN 0
+#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"
+#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) gcc_unreachable ()
#undef ASM_OUTPUT_ADDR_VEC_ELT
#define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \
#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), "," HOST_WIDE_INT_PRINT_UNSIGNED ",%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. */
-
-#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
-
-/* The alignment of a trampoline, in bits. */
-
-#undef TRAMPOLINE_ALIGNMENT
-#define TRAMPOLINE_ALIGNMENT 64
-
-/* 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)
-
/* Control how constructors and destructors are emitted. */
#define TARGET_ASM_CONSTRUCTOR vms_asm_out_constructor
#define TARGET_ASM_DESTRUCTOR vms_asm_out_destructor
-#undef SDB_DEBUGGING_INFO
-#undef MIPS_DEBUGGING_INFO
-#undef DBX_DEBUGGING_INFO
-
#define DWARF2_DEBUGGING_INFO 1
#define VMS_DEBUGGING_INFO 1
#undef EH_RETURN_HANDLER_RTX
#define EH_RETURN_HANDLER_RTX \
- gen_rtx_MEM (Pmode, plus_constant (stack_pointer_rtx, 8))
+ gen_rtx_MEM (Pmode, plus_constant (Pmode, stack_pointer_rtx, 8))
#define LINK_EH_SPEC "vms-dwarf2eh.o%s "
-
-#define MD_UNWIND_SUPPORT "config/alpha/vms-unwind.h"
+#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);
+/* 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 { fprintf ((FILE), "\t.literals\n"); \
- in_section = NULL; \
- 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 VMS_AND_DWARF2_DEBUG
#undef ASM_FINAL_SPEC
/* The VMS convention is to always provide minimal debug info
- for a traceback unless specifically overridden. Defaulting this here
- is a kludge. */
-
-#define OPTIMIZATION_OPTIONS(OPTIMIZE, OPTIMIZE_SIZE) \
-{ \
- write_symbols = VMS_DEBUG; \
- debug_info_level = (enum debug_info_level) 1; \
-}
-
-/* Override traceback debug info on -g0. */
-#undef OVERRIDE_OPTIONS
-#define OVERRIDE_OPTIONS \
-{ \
- if (write_symbols == NO_DEBUG) \
- debug_info_level = (enum debug_info_level) 0; \
- override_options (); \
-}
+ 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. */
-#undef LINK_SPEC
-#define LINK_SPEC "%{g:-g vms-dwarf2.o%s} %{g0} %{g1:-g1 vms-dwarf2.o%s} \
-%{g2:-g2 vms-dwarf2.o%s} %{g3:-g3 vms-dwarf2.o%s} %{shared} %{v} %{map}"
+#define LINK_SPEC "%{g0} %{g*:-g vms-dwarf2.o%s} %{shared} %{v} %{map}"
+#endif
#undef STARTFILE_SPEC
-#define STARTFILE_SPEC "%{!shared:%{mvms-return-codes:vcrt0.o%s} \
-%{!mvms-return-codes:pcrt0.o%s}}"
+#define STARTFILE_SPEC "%{!shared:crt0.o%s crtbegin.o%s} \
+ %{!static:%{shared:crtbeginS.o%s}}"
-#undef LIB_SPEC
-#define LIB_SPEC "-lc"
+#define ENDFILE_SPEC "%{!shared:crtend.o%s} %{!static:%{shared:crtendS.o%s}}"
-#define NAME__MAIN "__gccmain"
-#define SYMBOL__MAIN __gccmain
+#define INIT_SECTION_ASM_OP "\t.section LIB$INITIALIZE,GBL,NOWRT"
-#define MD_EXEC_PREFIX "/gnu/lib/gcc-lib/"
-#define MD_STARTFILE_PREFIX "/gnu/lib/gcc-lib/"
+#define LONGLONG_STANDALONE 1
-/* Specify the list of include file directories. */
-#define INCLUDE_DEFAULTS \
-{ \
- { "/gnu/lib/gcc-lib/include", 0, 0, 0 }, \
- { "/gnu_gxx_include", 0, 1, 1 }, \
- { "/gnu_cc_include", 0, 0, 0 }, \
- { "/gnu/include", 0, 0, 0 }, \
- { 0, 0, 0, 0 } \
-}
+#undef TARGET_VALID_POINTER_MODE
+#define TARGET_VALID_POINTER_MODE vms_valid_pointer_mode
-#define LONGLONG_STANDALONE 1
+/* Default values for _CRTL_VER and _VMS_VER. */
+#define VMS_DEFAULT_CRTL_VER 70320000
+#define VMS_DEFAULT_VMS_VER 70320000
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