/* Output variables, constants and external declarations, for GNU compiler.
- Copyright (C) 1996, 1997, 1998, 2000, 2001, 2002
- Free Software Foundation, Inc.
+ Copyright (C) 1996-2017 Free Software Foundation, 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 option)
+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,
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. */
+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_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);
-
-/* The structure return address arrives as an "argument" on VMS. */
-#undef STRUCT_VALUE_REGNUM
-#define STRUCT_VALUE 0
#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) \
-{ 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); \
- else \
- abort(); \
- 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)
-
-/* ABI has stack checking, but it's broken. */
-#undef STACK_CHECK_BUILTIN
-#define STACK_CHECK_BUILTIN 0
-
-#define LINK_SECTION_ASM_OP "\t.link"
+#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 LITERALS_SECTION_ASM_OP "\t.literals"
#define CTORS_SECTION_ASM_OP "\t.ctors"
#define DTORS_SECTION_ASM_OP "\t.dtors"
-
-#undef EXTRA_SECTIONS
-#define EXTRA_SECTIONS in_link, in_literals
-
-#undef EXTRA_SECTION_FUNCTIONS
-#define EXTRA_SECTION_FUNCTIONS \
-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; \
- } \
-}
-
-extern void link_section (void);
-extern void literals_section (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) \
#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 $27 has been set to the address of the trampoline, so we can
- use it for addressability of the two data items. */
-
-#undef TRAMPOLINE_TEMPLATE
-#define TRAMPOLINE_TEMPLATE(FILE) \
-{ \
- fprintf (FILE, "\t.quad 0\n"); \
- fprintf (FILE, "\t.linkage __tramp\n"); \
- fprintf (FILE, "\t.quad 0\n"); \
-}
-
-/* Length in units of the trampoline for entering a nested function. */
-
-#undef TRAMPOLINE_SIZE
-#define TRAMPOLINE_SIZE 32
-
-/* The alignment of a trampoline, in bits. */
-
-#undef TRAMPOLINE_ALIGNMENT
-#define TRAMPOLINE_ALIGNMENT 64
-
-/* Emit RTL insns to initialize the variable parts of a trampoline.
- FNADDR is an RTX for the address of the function's pure code.
- CXT is an RTX for the static chain value for the function. */
-
-#undef INITIALIZE_TRAMPOLINE
-#define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT) \
- alpha_initialize_trampoline (TRAMP, FNADDR, CXT, 16, 24, -1)
-
/* Control how constructors and destructors are emitted. */
#define TARGET_ASM_CONSTRUCTOR vms_asm_out_constructor
#define TARGET_ASM_DESTRUCTOR vms_asm_out_destructor
-#undef SDB_DEBUGGING_INFO
-#undef MIPS_DEBUGGING_INFO
-#undef DBX_DEBUGGING_INFO
-
#define DWARF2_DEBUGGING_INFO 1
#define VMS_DEBUGGING_INFO 1
#undef EH_RETURN_HANDLER_RTX
#define EH_RETURN_HANDLER_RTX \
- gen_rtx_MEM (Pmode, plus_constant (stack_pointer_rtx, 8))
+ gen_rtx_MEM (Pmode, plus_constant (Pmode, stack_pointer_rtx, 8))
#define LINK_EH_SPEC "vms-dwarf2eh.o%s "
-
-#ifdef IN_LIBGCC2
-#include <pdscdef.h>
-
-#define MD_FALLBACK_FRAME_STATE_FOR(CONTEXT, FS, SUCCESS) \
- do { \
- PDSCDEF *pv = *((PDSCDEF **) (CONTEXT)->reg [29]); \
- \
- if (pv && ((long) pv & 0x7) == 0) /* low bits 0 means address */ \
- pv = *(PDSCDEF **) pv; \
- \
- if (pv && ((pv->pdsc$w_flags & 0xf) == PDSC$K_KIND_FP_STACK)) \
- { \
- int i, j; \
- \
- (FS)->cfa_offset = pv->pdsc$l_size; \
- (FS)->cfa_reg = pv->pdsc$w_flags & PDSC$M_BASE_REG_IS_FP ? 29 : 30; \
- (FS)->retaddr_column = 26; \
- (FS)->cfa_how = CFA_REG_OFFSET; \
- (FS)->regs.reg[27].loc.offset = -pv->pdsc$l_size; \
- (FS)->regs.reg[27].how = REG_SAVED_OFFSET; \
- (FS)->regs.reg[26].loc.offset \
- = -(pv->pdsc$l_size - pv->pdsc$w_rsa_offset); \
- (FS)->regs.reg[26].how = REG_SAVED_OFFSET; \
- \
- for (i = 0, j = 0; i < 32; i++) \
- if (1<<i & pv->pdsc$l_ireg_mask) \
- { \
- (FS)->regs.reg[i].loc.offset \
- = -(pv->pdsc$l_size - pv->pdsc$w_rsa_offset - 8 * ++j); \
- (FS)->regs.reg[i].how = REG_SAVED_OFFSET; \
- } \
- \
- goto SUCCESS; \
- } \
- else if (pv && ((pv->pdsc$w_flags & 0xf) == PDSC$K_KIND_FP_REGISTER)) \
- { \
- (FS)->cfa_offset = pv->pdsc$l_size; \
- (FS)->cfa_reg = pv->pdsc$w_flags & PDSC$M_BASE_REG_IS_FP ? 29 : 30; \
- (FS)->retaddr_column = 26; \
- (FS)->cfa_how = CFA_REG_OFFSET; \
- (FS)->regs.reg[26].loc.reg = pv->pdsc$b_save_ra; \
- (FS)->regs.reg[26].how = REG_SAVED_REG; \
- (FS)->regs.reg[29].loc.reg = pv->pdsc$b_save_fp; \
- (FS)->regs.reg[29].how = REG_SAVED_REG; \
- \
- goto SUCCESS; \
- } \
-} while (0)
-#endif
+#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 { 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 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)
-/* 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}"
+#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 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