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/* Target Definitions for NVPTX.
Copyright (C) 2014-2015 Free Software Foundation, Inc.
Contributed by Bernd Schmidt <bernds@codesourcery.com>
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 3, or (at your
option) any later version.
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 GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#ifndef GCC_NVPTX_H
#define GCC_NVPTX_H
/* Run-time Target. */
#define STARTFILE_SPEC "%{mmainkernel:crt0.o}"
#define TARGET_CPU_CPP_BUILTINS() \
do \
{ \
builtin_assert ("machine=nvptx"); \
builtin_assert ("cpu=nvptx"); \
builtin_define ("__nvptx__"); \
} while (0)
/* Avoid the default in ../../gcc.c, which adds "-pthread", which is not
supported for nvptx. */
#define GOMP_SELF_SPECS ""
/* Storage Layout. */
#define BITS_BIG_ENDIAN 0
#define BYTES_BIG_ENDIAN 0
#define WORDS_BIG_ENDIAN 0
/* Chosen such that we won't have to deal with multi-word subregs. */
#define UNITS_PER_WORD 8
#define PARM_BOUNDARY 8
#define STACK_BOUNDARY 64
#define FUNCTION_BOUNDARY 32
#define BIGGEST_ALIGNMENT 64
#define STRICT_ALIGNMENT 1
#define MAX_STACK_ALIGNMENT (1024 * 8)
/* Copied from elf.h and other places. We'd otherwise use
BIGGEST_ALIGNMENT and fail a number of testcases. */
#define MAX_OFILE_ALIGNMENT (32768 * 8)
/* Type Layout. */
#define DEFAULT_SIGNED_CHAR 1
#define SHORT_TYPE_SIZE 16
#define INT_TYPE_SIZE 32
#define LONG_TYPE_SIZE (TARGET_ABI64 ? 64 : 32)
#define LONG_LONG_TYPE_SIZE 64
#define FLOAT_TYPE_SIZE 32
#define DOUBLE_TYPE_SIZE 64
#define LONG_DOUBLE_TYPE_SIZE 64
#undef SIZE_TYPE
#define SIZE_TYPE (TARGET_ABI64 ? "long unsigned int" : "unsigned int")
#undef PTRDIFF_TYPE
#define PTRDIFF_TYPE (TARGET_ABI64 ? "long int" : "int")
#define POINTER_SIZE (TARGET_ABI64 ? 64 : 32)
#define Pmode (TARGET_ABI64 ? DImode : SImode)
/* Registers. Since ptx is a virtual target, we just define a few
hard registers for special purposes and leave pseudos unallocated. */
#define FIRST_PSEUDO_REGISTER 16
#define FIXED_REGISTERS \
{ 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1 }
#define CALL_USED_REGISTERS \
{ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 }
#define HARD_REGNO_NREGS(regno, mode) ((void)(regno), (void)(mode), 1)
#define CANNOT_CHANGE_MODE_CLASS(M1, M2, CLS) ((CLS) == RETURN_REG)
#define HARD_REGNO_MODE_OK(REG, MODE) nvptx_hard_regno_mode_ok (REG, MODE)
/* Register Classes. */
enum reg_class
{
NO_REGS,
RETURN_REG,
ALL_REGS,
LIM_REG_CLASSES
};
#define N_REG_CLASSES (int) LIM_REG_CLASSES
#define REG_CLASS_NAMES { \
"RETURN_REG", \
"NO_REGS", \
"ALL_REGS" }
#define REG_CLASS_CONTENTS \
{ \
/* NO_REGS. */ \
{ 0x0000 }, \
/* RETURN_REG. */ \
{ 0x0008 }, \
/* ALL_REGS. */ \
{ 0xFFFF }, \
}
#define GENERAL_REGS ALL_REGS
#define REGNO_REG_CLASS(R) ((R) == 4 ? RETURN_REG : ALL_REGS)
#define BASE_REG_CLASS ALL_REGS
#define INDEX_REG_CLASS NO_REGS
#define REGNO_OK_FOR_BASE_P(X) true
#define REGNO_OK_FOR_INDEX_P(X) false
#define CLASS_MAX_NREGS(class, mode) \
((GET_MODE_SIZE (mode) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
#define MODES_TIEABLE_P(M1, M2) false
#define PROMOTE_MODE(MODE, UNSIGNEDP, TYPE) \
if (GET_MODE_CLASS (MODE) == MODE_INT \
&& GET_MODE_SIZE (MODE) < GET_MODE_SIZE (SImode)) \
{ \
(MODE) = SImode; \
}
/* Address spaces. */
#define ADDR_SPACE_GLOBAL 1
#define ADDR_SPACE_SHARED 3
#define ADDR_SPACE_CONST 4
#define ADDR_SPACE_LOCAL 5
#define ADDR_SPACE_PARAM 101
/* Stack and Calling. */
#define STARTING_FRAME_OFFSET 0
#define FRAME_GROWS_DOWNWARD 0
#define STACK_GROWS_DOWNWARD 1
#define STACK_POINTER_REGNUM 1
#define HARD_FRAME_POINTER_REGNUM 2
#define NVPTX_PUNNING_BUFFER_REGNUM 3
#define NVPTX_RETURN_REGNUM 4
#define FRAME_POINTER_REGNUM 15
#define ARG_POINTER_REGNUM 14
#define RETURN_ADDR_REGNO 13
#define STATIC_CHAIN_REGNUM 12
#define OUTGOING_ARG_POINTER_REGNUM 11
#define OUTGOING_STATIC_CHAIN_REGNUM 10
#define FIRST_PARM_OFFSET(FNDECL) 0
#define PUSH_ARGS_REVERSED 1
#define ACCUMULATE_OUTGOING_ARGS 1
#ifdef HOST_WIDE_INT
struct nvptx_args {
union tree_node *fntype;
/* Number of arguments passed in registers so far. */
int count;
/* Offset into the stdarg area so far. */
HOST_WIDE_INT off;
};
#endif
#define CUMULATIVE_ARGS struct nvptx_args
#define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, FNDECL, N_NAMED_ARGS) \
do { (CUM).fntype = (FNTYPE); (CUM).count = 0; (CUM).off = 0; } while (0)
#define FUNCTION_ARG_REGNO_P(r) 0
#define DEFAULT_PCC_STRUCT_RETURN 0
#define FUNCTION_PROFILER(file, labelno) \
fatal_error (input_location, \
"profiling is not yet implemented for this architecture")
#define TRAMPOLINE_SIZE 32
#define TRAMPOLINE_ALIGNMENT 256
/* We don't run reload, so this isn't actually used, but it still needs to be
defined. Showing an argp->fp elimination also stops
expand_builtin_setjmp_receiver from generating invalid insns. */
#define ELIMINABLE_REGS \
{ \
{ FRAME_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM}, \
{ ARG_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM} \
}
/* Define the offset between two registers, one to be eliminated, and the other
its replacement, at the start of a routine. */
#define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
((OFFSET) = 0)
/* Addressing Modes. */
#define MAX_REGS_PER_ADDRESS 1
#define LEGITIMATE_PIC_OPERAND_P(X) 1
#if defined HOST_WIDE_INT
struct GTY(()) machine_function
{
rtx_expr_list *call_args;
rtx start_call;
tree funtype;
bool has_call_with_varargs;
bool has_call_with_sc;
HOST_WIDE_INT outgoing_stdarg_size;
int ret_reg_mode; /* machine_mode not defined yet. */
int punning_buffer_size;
rtx axis_predicate[2];
};
#endif
/* Costs. */
#define NO_FUNCTION_CSE 1
#define SLOW_BYTE_ACCESS 0
#define BRANCH_COST(speed_p, predictable_p) 6
/* Assembler Format. */
#undef ASM_DECLARE_FUNCTION_NAME
#define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
nvptx_declare_function_name (FILE, NAME, DECL)
#undef ASM_DECLARE_FUNCTION_SIZE
#define ASM_DECLARE_FUNCTION_SIZE(STREAM, NAME, DECL) \
nvptx_function_end (STREAM)
#define DWARF2_ASM_LINE_DEBUG_INFO 1
#undef ASM_APP_ON
#define ASM_APP_ON "\t// #APP \n"
#undef ASM_APP_OFF
#define ASM_APP_OFF "\t// #NO_APP \n"
#define ASM_OUTPUT_COMMON(stream, name, size, rounded)
#define ASM_OUTPUT_LOCAL(stream, name, size, rounded)
#define REGISTER_NAMES \
{ \
"%hr0", "%outargs", "%hfp", "%punbuffer", "%retval", "%retval_in", "%hr6", "%hr7", \
"%hr8", "%hr9", "%hr10", "%hr11", "%hr12", "%hr13", "%argp", "%frame" \
}
#define DBX_REGISTER_NUMBER(N) N
#define TEXT_SECTION_ASM_OP ""
#define DATA_SECTION_ASM_OP ""
#undef ASM_GENERATE_INTERNAL_LABEL
#define ASM_GENERATE_INTERNAL_LABEL(LABEL, PREFIX, NUM) \
do \
{ \
char *__p; \
__p = stpcpy (&(LABEL)[1], PREFIX); \
(LABEL)[0] = '$'; \
sprint_ul (__p, (unsigned long) (NUM)); \
} \
while (0)
#define ASM_OUTPUT_ALIGN(FILE, POWER) \
do \
{ \
(void) (FILE); \
(void) (POWER); \
} \
while (0)
#define ASM_OUTPUT_SKIP(FILE, N) \
nvptx_output_skip (FILE, N)
#undef ASM_OUTPUT_ASCII
#define ASM_OUTPUT_ASCII(FILE, STR, LENGTH) \
nvptx_output_ascii (FILE, STR, LENGTH);
#define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
nvptx_declare_object_name (FILE, NAME, DECL)
#undef ASM_OUTPUT_ALIGNED_DECL_COMMON
#define ASM_OUTPUT_ALIGNED_DECL_COMMON(FILE, DECL, NAME, SIZE, ALIGN) \
do \
{ \
fprintf (FILE, "// BEGIN%s VAR DEF: ", \
TREE_PUBLIC (DECL) ? " GLOBAL" : ""); \
assemble_name_raw (FILE, NAME); \
fputc ('\n', FILE); \
const char *sec = nvptx_section_for_decl (DECL); \
fprintf (FILE, ".visible%s.align %d .b8 ", sec, \
(ALIGN) / BITS_PER_UNIT); \
assemble_name ((FILE), (NAME)); \
if ((SIZE) > 0) \
fprintf (FILE, "[" HOST_WIDE_INT_PRINT_DEC"]", (SIZE)); \
fprintf (FILE, ";\n"); \
} \
while (0)
#undef ASM_OUTPUT_ALIGNED_DECL_LOCAL
#define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN) \
do \
{ \
fprintf (FILE, "// BEGIN VAR DEF: "); \
assemble_name_raw (FILE, NAME); \
fputc ('\n', FILE); \
const char *sec = nvptx_section_for_decl (DECL); \
fprintf (FILE, ".visible%s.align %d .b8 ", sec, \
(ALIGN) / BITS_PER_UNIT); \
assemble_name ((FILE), (NAME)); \
if ((SIZE) > 0) \
fprintf (FILE, "[" HOST_WIDE_INT_PRINT_DEC"]", (SIZE)); \
fprintf (FILE, ";\n"); \
} \
while (0)
#define CASE_VECTOR_PC_RELATIVE flag_pic
#define JUMP_TABLES_IN_TEXT_SECTION flag_pic
#define ADDR_VEC_ALIGN(VEC) (JUMP_TABLES_IN_TEXT_SECTION ? 5 : 2)
/* Misc. */
#define DWARF2_LINENO_DEBUGGING_INFO 1
#define CLZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) \
((VALUE) = GET_MODE_BITSIZE ((MODE)), 2)
#define CTZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) \
((VALUE) = GET_MODE_BITSIZE ((MODE)), 2)
#define NO_DOT_IN_LABEL
#define ASM_COMMENT_START "//"
#define STORE_FLAG_VALUE -1
#define FLOAT_STORE_FLAG_VALUE(MODE) REAL_VALUE_ATOF("1.0", (MODE))
#define CASE_VECTOR_MODE SImode
#define MOVE_MAX 8
#define MOVE_RATIO(SPEED) 4
#define TRULY_NOOP_TRUNCATION(outprec, inprec) 1
#define FUNCTION_MODE QImode
#define HAS_INIT_SECTION 1
/* The C++ front end insists to link against libstdc++ -- which we don't build.
Tell it to instead link against the innocuous libgcc. */
#define LIBSTDCXX "gcc"
#endif /* GCC_NVPTX_H */
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