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Diffstat (limited to 'gcc-4.9/gcc/config/sh/sh.h')
| -rw-r--r-- | gcc-4.9/gcc/config/sh/sh.h | 2311 |
1 files changed, 2311 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/config/sh/sh.h b/gcc-4.9/gcc/config/sh/sh.h new file mode 100644 index 000000000..881930011 --- /dev/null +++ b/gcc-4.9/gcc/config/sh/sh.h @@ -0,0 +1,2311 @@ +/* Definitions of target machine for GNU compiler for Renesas / SuperH SH. + Copyright (C) 1993-2014 Free Software Foundation, Inc. + Contributed by Steve Chamberlain (sac@cygnus.com). + Improved by Jim Wilson (wilson@cygnus.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_SH_H +#define GCC_SH_H + +#include "config/vxworks-dummy.h" + +/* Unfortunately, insn-attrtab.c doesn't include insn-codes.h. We can't + include it here, because bconfig.h is also included by gencodes.c . */ +/* ??? No longer true. */ +extern int code_for_indirect_jump_scratch; + +#define TARGET_CPU_CPP_BUILTINS() sh_cpu_cpp_builtins (pfile) + +/* Value should be nonzero if functions must have frame pointers. + Zero means the frame pointer need not be set up (and parms may be accessed + via the stack pointer) in functions that seem suitable. */ + +#ifndef SUBTARGET_FRAME_POINTER_REQUIRED +#define SUBTARGET_FRAME_POINTER_REQUIRED 0 +#endif + + +/* Nonzero if this is an ELF target - compile time only */ +#define TARGET_ELF 0 + +/* Nonzero if we should generate code using type 2E insns. */ +#define TARGET_SH2E (TARGET_SH2 && TARGET_SH_E) + +/* Nonzero if we should generate code using type 2A insns. */ +#define TARGET_SH2A TARGET_HARD_SH2A +/* Nonzero if we should generate code using type 2A SF insns. */ +#define TARGET_SH2A_SINGLE (TARGET_SH2A && TARGET_SH2E) +/* Nonzero if we should generate code using type 2A DF insns. */ +#define TARGET_SH2A_DOUBLE (TARGET_HARD_SH2A_DOUBLE && TARGET_SH2A) + +/* Nonzero if we should generate code using type 3E insns. */ +#define TARGET_SH3E (TARGET_SH3 && TARGET_SH_E) + +/* Nonzero if we schedule for a superscalar implementation. */ +#define TARGET_SUPERSCALAR (TARGET_HARD_SH4 || TARGET_SH2A) + +/* Nonzero if a double-precision FPU is available. */ +#define TARGET_FPU_DOUBLE \ + ((target_flags & MASK_SH4) != 0 || TARGET_SH2A_DOUBLE) + +/* Nonzero if an FPU is available. */ +#define TARGET_FPU_ANY (TARGET_SH2E || TARGET_FPU_DOUBLE) + +/* Nonzero if we should generate code using type 4 insns. */ +#undef TARGET_SH4 +#define TARGET_SH4 ((target_flags & MASK_SH4) != 0 && TARGET_SH1) + +/* Nonzero if we're generating code for the common subset of + instructions present on both SH4a and SH4al-dsp. */ +#define TARGET_SH4A_ARCH TARGET_SH4A + +/* Nonzero if we're generating code for SH4a, unless the use of the + FPU is disabled (which makes it compatible with SH4al-dsp). */ +#define TARGET_SH4A_FP (TARGET_SH4A_ARCH && TARGET_FPU_ANY) + +/* Nonzero if we should generate code using the SHcompact instruction + set and 32-bit ABI. */ +#define TARGET_SHCOMPACT (TARGET_SH5 && TARGET_SH1) + +/* Nonzero if we should generate code using the SHmedia instruction + set and ABI. */ +#define TARGET_SHMEDIA (TARGET_SH5 && ! TARGET_SH1) + +/* Nonzero if we should generate code using the SHmedia ISA and 32-bit + ABI. */ +#define TARGET_SHMEDIA32 (TARGET_SH5 && ! TARGET_SH1 && TARGET_SH_E) + +/* Nonzero if we should generate code using the SHmedia ISA and 64-bit + ABI. */ +#define TARGET_SHMEDIA64 (TARGET_SH5 && ! TARGET_SH1 && ! TARGET_SH_E) + +/* Nonzero if we should generate code using SHmedia FPU instructions. */ +#define TARGET_SHMEDIA_FPU (TARGET_SHMEDIA && TARGET_FPU_DOUBLE) + +/* This is not used by the SH2E calling convention */ +#define TARGET_VARARGS_PRETEND_ARGS(FUN_DECL) \ + (TARGET_SH1 && ! TARGET_SH2E && ! TARGET_SH5 \ + && ! (TARGET_HITACHI || sh_attr_renesas_p (FUN_DECL))) + +#ifndef TARGET_CPU_DEFAULT +#define TARGET_CPU_DEFAULT SELECT_SH1 +#define SUPPORT_SH1 1 +#define SUPPORT_SH2E 1 +#define SUPPORT_SH4 1 +#define SUPPORT_SH4_SINGLE 1 +#define SUPPORT_SH2A 1 +#define SUPPORT_SH2A_SINGLE 1 +#endif + +#define TARGET_DIVIDE_INV \ + (sh_div_strategy == SH_DIV_INV || sh_div_strategy == SH_DIV_INV_MINLAT \ + || sh_div_strategy == SH_DIV_INV20U || sh_div_strategy == SH_DIV_INV20L \ + || sh_div_strategy == SH_DIV_INV_CALL \ + || sh_div_strategy == SH_DIV_INV_CALL2 || sh_div_strategy == SH_DIV_INV_FP) +#define TARGET_DIVIDE_FP (sh_div_strategy == SH_DIV_FP) +#define TARGET_DIVIDE_INV_FP (sh_div_strategy == SH_DIV_INV_FP) +#define TARGET_DIVIDE_CALL2 (sh_div_strategy == SH_DIV_CALL2) +#define TARGET_DIVIDE_INV_MINLAT (sh_div_strategy == SH_DIV_INV_MINLAT) +#define TARGET_DIVIDE_INV20U (sh_div_strategy == SH_DIV_INV20U) +#define TARGET_DIVIDE_INV20L (sh_div_strategy == SH_DIV_INV20L) +#define TARGET_DIVIDE_INV_CALL (sh_div_strategy == SH_DIV_INV_CALL) +#define TARGET_DIVIDE_INV_CALL2 (sh_div_strategy == SH_DIV_INV_CALL2) +#define TARGET_DIVIDE_CALL_DIV1 (sh_div_strategy == SH_DIV_CALL_DIV1) +#define TARGET_DIVIDE_CALL_FP (sh_div_strategy == SH_DIV_CALL_FP) +#define TARGET_DIVIDE_CALL_TABLE (sh_div_strategy == SH_DIV_CALL_TABLE) + +#define SELECT_SH1 (MASK_SH1) +#define SELECT_SH2 (MASK_SH2 | SELECT_SH1) +#define SELECT_SH2E (MASK_SH_E | MASK_SH2 | MASK_SH1 \ + | MASK_FPU_SINGLE) +#define SELECT_SH2A (MASK_SH_E | MASK_HARD_SH2A \ + | MASK_HARD_SH2A_DOUBLE \ + | MASK_SH2 | MASK_SH1) +#define SELECT_SH2A_NOFPU (MASK_HARD_SH2A | MASK_SH2 | MASK_SH1) +#define SELECT_SH2A_SINGLE_ONLY (MASK_SH_E | MASK_HARD_SH2A | MASK_SH2 \ + | MASK_SH1 | MASK_FPU_SINGLE \ + | MASK_FPU_SINGLE_ONLY) +#define SELECT_SH2A_SINGLE (MASK_SH_E | MASK_HARD_SH2A \ + | MASK_FPU_SINGLE | MASK_HARD_SH2A_DOUBLE \ + | MASK_SH2 | MASK_SH1) +#define SELECT_SH3 (MASK_SH3 | SELECT_SH2) +#define SELECT_SH3E (MASK_SH_E | MASK_FPU_SINGLE | SELECT_SH3) +#define SELECT_SH4_NOFPU (MASK_HARD_SH4 | SELECT_SH3) +#define SELECT_SH4_SINGLE_ONLY (MASK_HARD_SH4 | SELECT_SH3E \ + | MASK_FPU_SINGLE_ONLY) +#define SELECT_SH4 (MASK_SH4 | MASK_SH_E | MASK_HARD_SH4 \ + | SELECT_SH3) +#define SELECT_SH4_SINGLE (MASK_FPU_SINGLE | SELECT_SH4) +#define SELECT_SH4A_NOFPU (MASK_SH4A | SELECT_SH4_NOFPU) +#define SELECT_SH4A_SINGLE_ONLY (MASK_SH4A | SELECT_SH4_SINGLE_ONLY) +#define SELECT_SH4A (MASK_SH4A | SELECT_SH4) +#define SELECT_SH4A_SINGLE (MASK_SH4A | SELECT_SH4_SINGLE) +#define SELECT_SH5_64MEDIA (MASK_SH5 | MASK_SH4) +#define SELECT_SH5_64MEDIA_NOFPU (MASK_SH5) +#define SELECT_SH5_32MEDIA (MASK_SH5 | MASK_SH4 | MASK_SH_E) +#define SELECT_SH5_32MEDIA_NOFPU (MASK_SH5 | MASK_SH_E) +#define SELECT_SH5_COMPACT (MASK_SH5 | MASK_SH4 | SELECT_SH3E) +#define SELECT_SH5_COMPACT_NOFPU (MASK_SH5 | SELECT_SH3) + +#if SUPPORT_SH1 +#define SUPPORT_SH2 1 +#endif +#if SUPPORT_SH2 +#define SUPPORT_SH3 1 +#define SUPPORT_SH2A_NOFPU 1 +#endif +#if SUPPORT_SH3 +#define SUPPORT_SH4_NOFPU 1 +#endif +#if SUPPORT_SH4_NOFPU +#define SUPPORT_SH4A_NOFPU 1 +#define SUPPORT_SH4AL 1 +#endif + +#if SUPPORT_SH2E +#define SUPPORT_SH3E 1 +#define SUPPORT_SH2A_SINGLE_ONLY 1 +#endif +#if SUPPORT_SH3E +#define SUPPORT_SH4_SINGLE_ONLY 1 +#endif +#if SUPPORT_SH4_SINGLE_ONLY +#define SUPPORT_SH4A_SINGLE_ONLY 1 +#endif + +#if SUPPORT_SH4 +#define SUPPORT_SH4A 1 +#endif + +#if SUPPORT_SH4_SINGLE +#define SUPPORT_SH4A_SINGLE 1 +#endif + +#if SUPPORT_SH5_COMPAT +#define SUPPORT_SH5_32MEDIA 1 +#endif + +#if SUPPORT_SH5_COMPACT_NOFPU +#define SUPPORT_SH5_32MEDIA_NOFPU 1 +#endif + +#define SUPPORT_ANY_SH5_32MEDIA \ + (SUPPORT_SH5_32MEDIA || SUPPORT_SH5_32MEDIA_NOFPU) +#define SUPPORT_ANY_SH5_64MEDIA \ + (SUPPORT_SH5_64MEDIA || SUPPORT_SH5_64MEDIA_NOFPU) +#define SUPPORT_ANY_SH5 \ + (SUPPORT_ANY_SH5_32MEDIA || SUPPORT_ANY_SH5_64MEDIA) + +/* Reset all target-selection flags. */ +#define MASK_ARCH (MASK_SH1 | MASK_SH2 | MASK_SH3 | MASK_SH_E | MASK_SH4 \ + | MASK_HARD_SH2A | MASK_HARD_SH2A_DOUBLE | MASK_SH4A \ + | MASK_HARD_SH4 | MASK_FPU_SINGLE | MASK_SH5 \ + | MASK_FPU_SINGLE_ONLY) + +/* This defaults us to big-endian. */ +#ifndef TARGET_ENDIAN_DEFAULT +#define TARGET_ENDIAN_DEFAULT 0 +#endif + +#ifndef TARGET_OPT_DEFAULT +#define TARGET_OPT_DEFAULT 0 +#endif + +#define TARGET_DEFAULT \ + (TARGET_CPU_DEFAULT | TARGET_ENDIAN_DEFAULT | TARGET_OPT_DEFAULT) + +#ifndef SH_MULTILIB_CPU_DEFAULT +#define SH_MULTILIB_CPU_DEFAULT "m1" +#endif + +#if TARGET_ENDIAN_DEFAULT +#define MULTILIB_DEFAULTS { "ml", SH_MULTILIB_CPU_DEFAULT } +#else +#define MULTILIB_DEFAULTS { "mb", SH_MULTILIB_CPU_DEFAULT } +#endif + +#define CPP_SPEC " %(subtarget_cpp_spec) " + +#ifndef SUBTARGET_CPP_SPEC +#define SUBTARGET_CPP_SPEC "" +#endif + +#ifndef SUBTARGET_EXTRA_SPECS +#define SUBTARGET_EXTRA_SPECS +#endif + +#define EXTRA_SPECS \ + { "subtarget_cpp_spec", SUBTARGET_CPP_SPEC }, \ + { "link_emul_prefix", LINK_EMUL_PREFIX }, \ + { "link_default_cpu_emul", LINK_DEFAULT_CPU_EMUL }, \ + { "subtarget_link_emul_suffix", SUBTARGET_LINK_EMUL_SUFFIX }, \ + { "subtarget_link_spec", SUBTARGET_LINK_SPEC }, \ + { "subtarget_asm_endian_spec", SUBTARGET_ASM_ENDIAN_SPEC }, \ + { "subtarget_asm_relax_spec", SUBTARGET_ASM_RELAX_SPEC }, \ + { "subtarget_asm_isa_spec", SUBTARGET_ASM_ISA_SPEC }, \ + { "subtarget_asm_spec", SUBTARGET_ASM_SPEC }, \ + SUBTARGET_EXTRA_SPECS + +#if TARGET_CPU_DEFAULT & MASK_HARD_SH4 +#define SUBTARGET_ASM_RELAX_SPEC "%{!m1:%{!m2:%{!m3*:%{!m5*:-isa=sh4-up}}}}" +#else +#define SUBTARGET_ASM_RELAX_SPEC "%{m4*:-isa=sh4-up}" +#endif + +#define SH_ASM_SPEC \ + "%(subtarget_asm_endian_spec) %{mrelax:-relax %(subtarget_asm_relax_spec)} \ +%(subtarget_asm_isa_spec) %(subtarget_asm_spec) \ +%{m2a:--isa=sh2a} \ +%{m2a-single:--isa=sh2a} \ +%{m2a-single-only:--isa=sh2a} \ +%{m2a-nofpu:--isa=sh2a-nofpu} \ +%{m5-compact*:--isa=SHcompact} \ +%{m5-32media*:--isa=SHmedia --abi=32} \ +%{m5-64media*:--isa=SHmedia --abi=64} \ +%{m4al:-dsp} %{mcut2-workaround:-cut2-workaround}" + +#define ASM_SPEC SH_ASM_SPEC + +#ifndef SUBTARGET_ASM_ENDIAN_SPEC +#if TARGET_ENDIAN_DEFAULT == MASK_LITTLE_ENDIAN +#define SUBTARGET_ASM_ENDIAN_SPEC "%{mb:-big} %{!mb:-little}" +#else +#define SUBTARGET_ASM_ENDIAN_SPEC "%{ml:-little} %{!ml:-big}" +#endif +#endif + +#if STRICT_NOFPU == 1 +/* Strict nofpu means that the compiler should tell the assembler + to reject FPU instructions. E.g. from ASM inserts. */ +#if TARGET_CPU_DEFAULT & MASK_HARD_SH4 && !(TARGET_CPU_DEFAULT & MASK_SH_E) +#define SUBTARGET_ASM_ISA_SPEC "%{!m1:%{!m2:%{!m3*:%{m4-nofpu|!m4*:%{!m5:-isa=sh4-nofpu}}}}}" +#else +/* If there were an -isa option for sh5-nofpu then it would also go here. */ +#define SUBTARGET_ASM_ISA_SPEC \ + "%{m4-nofpu:-isa=sh4-nofpu} " ASM_ISA_DEFAULT_SPEC +#endif +#else /* ! STRICT_NOFPU */ +#define SUBTARGET_ASM_ISA_SPEC ASM_ISA_DEFAULT_SPEC +#endif + +#ifndef SUBTARGET_ASM_SPEC +#define SUBTARGET_ASM_SPEC "" +#endif + +#if TARGET_ENDIAN_DEFAULT == MASK_LITTLE_ENDIAN +#define LINK_EMUL_PREFIX "sh%{!mb:l}" +#else +#define LINK_EMUL_PREFIX "sh%{ml:l}" +#endif + +#if TARGET_CPU_DEFAULT & MASK_SH5 +#if TARGET_CPU_DEFAULT & MASK_SH_E +#define LINK_DEFAULT_CPU_EMUL "32" +#if TARGET_CPU_DEFAULT & MASK_SH1 +#define ASM_ISA_SPEC_DEFAULT "--isa=SHcompact" +#else +#define ASM_ISA_SPEC_DEFAULT "--isa=SHmedia --abi=32" +#endif /* MASK_SH1 */ +#else /* !MASK_SH_E */ +#define LINK_DEFAULT_CPU_EMUL "64" +#define ASM_ISA_SPEC_DEFAULT "--isa=SHmedia --abi=64" +#endif /* MASK_SH_E */ +#define ASM_ISA_DEFAULT_SPEC \ +" %{!m1:%{!m2*:%{!m3*:%{!m4*:%{!m5*:" ASM_ISA_SPEC_DEFAULT "}}}}}" +#else /* !MASK_SH5 */ +#define LINK_DEFAULT_CPU_EMUL "" +#define ASM_ISA_DEFAULT_SPEC "" +#endif /* MASK_SH5 */ + +#define SUBTARGET_LINK_EMUL_SUFFIX "" +#define SUBTARGET_LINK_SPEC "" + +/* Go via SH_LINK_SPEC to avoid code replication. */ +#define LINK_SPEC SH_LINK_SPEC + +#define SH_LINK_SPEC "\ +-m %(link_emul_prefix)\ +%{m5-compact*|m5-32media*:32}\ +%{m5-64media*:64}\ +%{!m1:%{!m2:%{!m3*:%{!m4*:%{!m5*:%(link_default_cpu_emul)}}}}}\ +%(subtarget_link_emul_suffix) \ +%{mrelax:-relax} %(subtarget_link_spec)" + +#ifndef SH_DIV_STR_FOR_SIZE +#define SH_DIV_STR_FOR_SIZE "call" +#endif + +/* SH2A does not support little-endian. Catch such combinations + taking into account the default configuration. */ +#if TARGET_ENDIAN_DEFAULT == MASK_BIG_ENDIAN +#define IS_LITTLE_ENDIAN_OPTION "%{ml:" +#else +#define IS_LITTLE_ENDIAN_OPTION "%{!mb:" +#endif + +#if TARGET_CPU_DEFAULT & MASK_HARD_SH2A +#define UNSUPPORTED_SH2A IS_LITTLE_ENDIAN_OPTION \ +"%{m2a*|!m1:%{!m2*:%{!m3*:%{!m4*:{!m5*:%eSH2a does not support little-endian}}}}}}" +#else +#define UNSUPPORTED_SH2A IS_LITTLE_ENDIAN_OPTION \ +"%{m2a*:%eSH2a does not support little-endian}}" +#endif + +#undef DRIVER_SELF_SPECS +#define DRIVER_SELF_SPECS UNSUPPORTED_SH2A + +#define ASSEMBLER_DIALECT assembler_dialect + +extern int assembler_dialect; + +enum sh_divide_strategy_e { + /* SH5 strategies. */ + SH_DIV_CALL, + SH_DIV_CALL2, + SH_DIV_FP, /* We could do this also for SH4. */ + SH_DIV_INV, + SH_DIV_INV_MINLAT, + SH_DIV_INV20U, + SH_DIV_INV20L, + SH_DIV_INV_CALL, + SH_DIV_INV_CALL2, + SH_DIV_INV_FP, + /* SH1 .. SH4 strategies. Because of the small number of registers + available, the compiler uses knowledge of the actual set of registers + being clobbered by the different functions called. */ + SH_DIV_CALL_DIV1, /* No FPU, medium size, highest latency. */ + SH_DIV_CALL_FP, /* FPU needed, small size, high latency. */ + SH_DIV_CALL_TABLE, /* No FPU, large size, medium latency. */ + SH_DIV_INTRINSIC +}; + +extern enum sh_divide_strategy_e sh_div_strategy; + +#ifndef SH_DIV_STRATEGY_DEFAULT +#define SH_DIV_STRATEGY_DEFAULT SH_DIV_CALL +#endif + +#define SUBTARGET_OVERRIDE_OPTIONS (void) 0 + + +/* Target machine storage layout. */ + +#define TARGET_BIG_ENDIAN (!TARGET_LITTLE_ENDIAN) + +#define SH_REG_MSW_OFFSET (TARGET_LITTLE_ENDIAN ? 1 : 0) +#define SH_REG_LSW_OFFSET (TARGET_LITTLE_ENDIAN ? 0 : 1) + +/* Define this if most significant bit is lowest numbered + in instructions that operate on numbered bit-fields. */ +#define BITS_BIG_ENDIAN 0 + +/* Define this if most significant byte of a word is the lowest numbered. */ +#define BYTES_BIG_ENDIAN TARGET_BIG_ENDIAN + +/* Define this if most significant word of a multiword number is the lowest + numbered. */ +#define WORDS_BIG_ENDIAN TARGET_BIG_ENDIAN + +#define MAX_BITS_PER_WORD 64 + +/* Width in bits of an `int'. We want just 32-bits, even if words are + longer. */ +#define INT_TYPE_SIZE 32 + +/* Width in bits of a `long'. */ +#define LONG_TYPE_SIZE (TARGET_SHMEDIA64 ? 64 : 32) + +/* Width in bits of a `long long'. */ +#define LONG_LONG_TYPE_SIZE 64 + +/* Width in bits of a `long double'. */ +#define LONG_DOUBLE_TYPE_SIZE 64 + +/* Width of a word, in units (bytes). */ +#define UNITS_PER_WORD (TARGET_SHMEDIA ? 8 : 4) +#define MIN_UNITS_PER_WORD 4 + +/* Scaling factor for Dwarf data offsets for CFI information. + The dwarf2out.c default would use -UNITS_PER_WORD, which is -8 for + SHmedia; however, since we do partial register saves for the registers + visible to SHcompact, and for target registers for SHMEDIA32, we have + to allow saves that are only 4-byte aligned. */ +#define DWARF_CIE_DATA_ALIGNMENT -4 + +/* Width in bits of a pointer. + See also the macro `Pmode' defined below. */ +#define POINTER_SIZE (TARGET_SHMEDIA64 ? 64 : 32) + +/* Allocation boundary (in *bits*) for storing arguments in argument list. */ +#define PARM_BOUNDARY (TARGET_SH5 ? 64 : 32) + +/* Boundary (in *bits*) on which stack pointer should be aligned. */ +#define STACK_BOUNDARY BIGGEST_ALIGNMENT + +/* The log (base 2) of the cache line size, in bytes. Processors prior to + SH2 have no actual cache, but they fetch code in chunks of 4 bytes. + The SH2/3 have 16 byte cache lines, and the SH4 has a 32 byte cache line */ +#define CACHE_LOG ((TARGET_HARD_SH4 || TARGET_SH5) ? 5 : TARGET_SH2 ? 4 : 2) + +/* ABI given & required minimum allocation boundary (in *bits*) for the + code of a function. */ +#define FUNCTION_BOUNDARY (16 << TARGET_SHMEDIA) + +/* On SH5, the lowest bit is used to indicate SHmedia functions, so + the vbit must go into the delta field of + pointers-to-member-functions. */ +#define TARGET_PTRMEMFUNC_VBIT_LOCATION \ + (TARGET_SH5 ? ptrmemfunc_vbit_in_delta : ptrmemfunc_vbit_in_pfn) + +/* Alignment of field after `int : 0' in a structure. */ +#define EMPTY_FIELD_BOUNDARY 32 + +/* No data type wants to be aligned rounder than this. */ +#define BIGGEST_ALIGNMENT (TARGET_ALIGN_DOUBLE ? 64 : 32) + +/* The best alignment to use in cases where we have a choice. */ +#define FASTEST_ALIGNMENT (TARGET_SH5 ? 64 : 32) + +/* Make strings word-aligned so strcpy from constants will be faster. */ +#define CONSTANT_ALIGNMENT(EXP, ALIGN) \ + ((TREE_CODE (EXP) == STRING_CST \ + && (ALIGN) < FASTEST_ALIGNMENT) \ + ? FASTEST_ALIGNMENT : (ALIGN)) + +/* get_mode_alignment assumes complex values are always held in multiple + registers, but that is not the case on the SH; CQImode and CHImode are + held in a single integer register. SH5 also holds CSImode and SCmode + values in integer registers. This is relevant for argument passing on + SHcompact as we use a stack temp in order to pass CSImode by reference. */ +#define LOCAL_ALIGNMENT(TYPE, ALIGN) \ + ((GET_MODE_CLASS (TYPE_MODE (TYPE)) == MODE_COMPLEX_INT \ + || GET_MODE_CLASS (TYPE_MODE (TYPE)) == MODE_COMPLEX_FLOAT) \ + ? (unsigned) MIN (BIGGEST_ALIGNMENT, GET_MODE_BITSIZE (TYPE_MODE (TYPE))) \ + : (unsigned) DATA_ALIGNMENT(TYPE, ALIGN)) + +/* Make arrays of chars word-aligned for the same reasons. */ +#define DATA_ALIGNMENT(TYPE, ALIGN) \ + (TREE_CODE (TYPE) == ARRAY_TYPE \ + && TYPE_MODE (TREE_TYPE (TYPE)) == QImode \ + && (ALIGN) < FASTEST_ALIGNMENT ? FASTEST_ALIGNMENT : (ALIGN)) + +/* Number of bits which any structure or union's size must be a + multiple of. Each structure or union's size is rounded up to a + multiple of this. */ +#define STRUCTURE_SIZE_BOUNDARY (TARGET_PADSTRUCT ? 32 : 8) + +/* Set this nonzero if move instructions will actually fail to work + when given unaligned data. */ +#define STRICT_ALIGNMENT 1 + +/* If LABEL_AFTER_BARRIER demands an alignment, return its base 2 logarithm. */ +#define LABEL_ALIGN_AFTER_BARRIER(LABEL_AFTER_BARRIER) \ + barrier_align (LABEL_AFTER_BARRIER) + +#define LOOP_ALIGN(A_LABEL) sh_loop_align (A_LABEL) + +#define LABEL_ALIGN(A_LABEL) \ +( \ + (PREV_INSN (A_LABEL) \ + && NONJUMP_INSN_P (PREV_INSN (A_LABEL)) \ + && GET_CODE (PATTERN (PREV_INSN (A_LABEL))) == UNSPEC_VOLATILE \ + && XINT (PATTERN (PREV_INSN (A_LABEL)), 1) == UNSPECV_ALIGN) \ + /* explicit alignment insn in constant tables. */ \ + ? INTVAL (XVECEXP (PATTERN (PREV_INSN (A_LABEL)), 0, 0)) \ + : 0) + +/* Jump tables must be 32 bit aligned, no matter the size of the element. */ +#define ADDR_VEC_ALIGN(ADDR_VEC) 2 + +/* The base two logarithm of the known minimum alignment of an insn length. */ +#define INSN_LENGTH_ALIGNMENT(A_INSN) \ + (NONJUMP_INSN_P (A_INSN) \ + ? 1 << TARGET_SHMEDIA \ + : JUMP_P (A_INSN) || CALL_P (A_INSN) \ + ? 1 << TARGET_SHMEDIA \ + : CACHE_LOG) + +/* Standard register usage. */ + +/* Register allocation for the Renesas calling convention: + + r0 arg return + r1..r3 scratch + r4..r7 args in + r8..r13 call saved + r14 frame pointer/call saved + r15 stack pointer + ap arg pointer (doesn't really exist, always eliminated) + pr subroutine return address + t t bit + mach multiply/accumulate result, high part + macl multiply/accumulate result, low part. + fpul fp/int communication register + rap return address pointer register + fr0 fp arg return + fr1..fr3 scratch floating point registers + fr4..fr11 fp args in + fr12..fr15 call saved floating point registers */ + +#define MAX_REGISTER_NAME_LENGTH 5 +extern char sh_register_names[][MAX_REGISTER_NAME_LENGTH + 1]; + +#define SH_REGISTER_NAMES_INITIALIZER \ +{ \ + "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \ + "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", \ + "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", \ + "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31", \ + "r32", "r33", "r34", "r35", "r36", "r37", "r38", "r39", \ + "r40", "r41", "r42", "r43", "r44", "r45", "r46", "r47", \ + "r48", "r49", "r50", "r51", "r52", "r53", "r54", "r55", \ + "r56", "r57", "r58", "r59", "r60", "r61", "r62", "r63", \ + "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7", \ + "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15", \ + "fr16", "fr17", "fr18", "fr19", "fr20", "fr21", "fr22", "fr23", \ + "fr24", "fr25", "fr26", "fr27", "fr28", "fr29", "fr30", "fr31", \ + "fr32", "fr33", "fr34", "fr35", "fr36", "fr37", "fr38", "fr39", \ + "fr40", "fr41", "fr42", "fr43", "fr44", "fr45", "fr46", "fr47", \ + "fr48", "fr49", "fr50", "fr51", "fr52", "fr53", "fr54", "fr55", \ + "fr56", "fr57", "fr58", "fr59", "fr60", "fr61", "fr62", "fr63", \ + "tr0", "tr1", "tr2", "tr3", "tr4", "tr5", "tr6", "tr7", \ + "xd0", "xd2", "xd4", "xd6", "xd8", "xd10", "xd12", "xd14", \ + "gbr", "ap", "pr", "t", "mach", "macl", "fpul", "fpscr", \ + "rap", "sfp" \ +} + +#define REGNAMES_ARR_INDEX_1(index) \ + (sh_register_names[index]) +#define REGNAMES_ARR_INDEX_2(index) \ + REGNAMES_ARR_INDEX_1 ((index)), REGNAMES_ARR_INDEX_1 ((index)+1) +#define REGNAMES_ARR_INDEX_4(index) \ + REGNAMES_ARR_INDEX_2 ((index)), REGNAMES_ARR_INDEX_2 ((index)+2) +#define REGNAMES_ARR_INDEX_8(index) \ + REGNAMES_ARR_INDEX_4 ((index)), REGNAMES_ARR_INDEX_4 ((index)+4) +#define REGNAMES_ARR_INDEX_16(index) \ + REGNAMES_ARR_INDEX_8 ((index)), REGNAMES_ARR_INDEX_8 ((index)+8) +#define REGNAMES_ARR_INDEX_32(index) \ + REGNAMES_ARR_INDEX_16 ((index)), REGNAMES_ARR_INDEX_16 ((index)+16) +#define REGNAMES_ARR_INDEX_64(index) \ + REGNAMES_ARR_INDEX_32 ((index)), REGNAMES_ARR_INDEX_32 ((index)+32) + +#define REGISTER_NAMES \ +{ \ + REGNAMES_ARR_INDEX_64 (0), \ + REGNAMES_ARR_INDEX_64 (64), \ + REGNAMES_ARR_INDEX_8 (128), \ + REGNAMES_ARR_INDEX_8 (136), \ + REGNAMES_ARR_INDEX_8 (144), \ + REGNAMES_ARR_INDEX_2 (152) \ +} + +#define ADDREGNAMES_SIZE 32 +#define MAX_ADDITIONAL_REGISTER_NAME_LENGTH 4 +extern char sh_additional_register_names[ADDREGNAMES_SIZE] \ + [MAX_ADDITIONAL_REGISTER_NAME_LENGTH + 1]; + +#define SH_ADDITIONAL_REGISTER_NAMES_INITIALIZER \ +{ \ + "dr0", "dr2", "dr4", "dr6", "dr8", "dr10", "dr12", "dr14", \ + "dr16", "dr18", "dr20", "dr22", "dr24", "dr26", "dr28", "dr30", \ + "dr32", "dr34", "dr36", "dr38", "dr40", "dr42", "dr44", "dr46", \ + "dr48", "dr50", "dr52", "dr54", "dr56", "dr58", "dr60", "dr62" \ +} + +#define ADDREGNAMES_REGNO(index) \ + ((index < 32) ? (FIRST_FP_REG + (index) * 2) \ + : (-1)) + +#define ADDREGNAMES_ARR_INDEX_1(index) \ + { (sh_additional_register_names[index]), ADDREGNAMES_REGNO (index) } +#define ADDREGNAMES_ARR_INDEX_2(index) \ + ADDREGNAMES_ARR_INDEX_1 ((index)), ADDREGNAMES_ARR_INDEX_1 ((index)+1) +#define ADDREGNAMES_ARR_INDEX_4(index) \ + ADDREGNAMES_ARR_INDEX_2 ((index)), ADDREGNAMES_ARR_INDEX_2 ((index)+2) +#define ADDREGNAMES_ARR_INDEX_8(index) \ + ADDREGNAMES_ARR_INDEX_4 ((index)), ADDREGNAMES_ARR_INDEX_4 ((index)+4) +#define ADDREGNAMES_ARR_INDEX_16(index) \ + ADDREGNAMES_ARR_INDEX_8 ((index)), ADDREGNAMES_ARR_INDEX_8 ((index)+8) +#define ADDREGNAMES_ARR_INDEX_32(index) \ + ADDREGNAMES_ARR_INDEX_16 ((index)), ADDREGNAMES_ARR_INDEX_16 ((index)+16) + +#define ADDITIONAL_REGISTER_NAMES \ +{ \ + ADDREGNAMES_ARR_INDEX_32 (0) \ +} + +/* Number of actual hardware registers. + The hardware registers are assigned numbers for the compiler + from 0 to just below FIRST_PSEUDO_REGISTER. + All registers that the compiler knows about must be given numbers, + even those that are not normally considered general registers. */ + +/* There are many other relevant definitions in sh.md's md_constants. */ + +#define FIRST_GENERAL_REG R0_REG +#define LAST_GENERAL_REG (FIRST_GENERAL_REG + (TARGET_SHMEDIA ? 63 : 15)) +#define FIRST_FP_REG DR0_REG +#define LAST_FP_REG (FIRST_FP_REG + \ + (TARGET_SHMEDIA_FPU ? 63 : TARGET_SH2E ? 15 : -1)) +#define FIRST_XD_REG XD0_REG +#define LAST_XD_REG (FIRST_XD_REG + ((TARGET_SH4 && TARGET_FMOVD) ? 7 : -1)) +#define FIRST_TARGET_REG TR0_REG +#define LAST_TARGET_REG (FIRST_TARGET_REG + (TARGET_SHMEDIA ? 7 : -1)) + +/* Registers that can be accessed through bank0 or bank1 depending on sr.md. */ +#define FIRST_BANKED_REG R0_REG +#define LAST_BANKED_REG R7_REG + +#define BANKED_REGISTER_P(REGNO) \ + IN_RANGE ((REGNO), \ + (unsigned HOST_WIDE_INT) FIRST_BANKED_REG, \ + (unsigned HOST_WIDE_INT) LAST_BANKED_REG) + +#define GENERAL_REGISTER_P(REGNO) \ + IN_RANGE ((REGNO), \ + (unsigned HOST_WIDE_INT) FIRST_GENERAL_REG, \ + (unsigned HOST_WIDE_INT) LAST_GENERAL_REG) + +#define GENERAL_OR_AP_REGISTER_P(REGNO) \ + (GENERAL_REGISTER_P (REGNO) || ((REGNO) == AP_REG) \ + || ((REGNO) == FRAME_POINTER_REGNUM)) + +#define FP_REGISTER_P(REGNO) \ + ((int) (REGNO) >= FIRST_FP_REG && (int) (REGNO) <= LAST_FP_REG) + +#define XD_REGISTER_P(REGNO) \ + ((int) (REGNO) >= FIRST_XD_REG && (int) (REGNO) <= LAST_XD_REG) + +#define FP_OR_XD_REGISTER_P(REGNO) \ + (FP_REGISTER_P (REGNO) || XD_REGISTER_P (REGNO)) + +#define FP_ANY_REGISTER_P(REGNO) \ + (FP_REGISTER_P (REGNO) || XD_REGISTER_P (REGNO) || (REGNO) == FPUL_REG) + +#define SPECIAL_REGISTER_P(REGNO) \ + ((REGNO) == GBR_REG || (REGNO) == T_REG \ + || (REGNO) == MACH_REG || (REGNO) == MACL_REG) + +#define TARGET_REGISTER_P(REGNO) \ + ((int) (REGNO) >= FIRST_TARGET_REG && (int) (REGNO) <= LAST_TARGET_REG) + +#define SHMEDIA_REGISTER_P(REGNO) \ + (GENERAL_REGISTER_P (REGNO) || FP_REGISTER_P (REGNO) \ + || TARGET_REGISTER_P (REGNO)) + +/* This is to be used in TARGET_CONDITIONAL_REGISTER_USAGE, to mark + registers that should be fixed. */ +#define VALID_REGISTER_P(REGNO) \ + (SHMEDIA_REGISTER_P (REGNO) || XD_REGISTER_P (REGNO) \ + || (REGNO) == AP_REG || (REGNO) == RAP_REG \ + || (REGNO) == FRAME_POINTER_REGNUM \ + || (TARGET_SH1 && (SPECIAL_REGISTER_P (REGNO) || (REGNO) == PR_REG)) \ + || (TARGET_SH2E && (REGNO) == FPUL_REG)) + +/* The mode that should be generally used to store a register by + itself in the stack, or to load it back. */ +#define REGISTER_NATURAL_MODE(REGNO) \ + (FP_REGISTER_P (REGNO) ? SFmode \ + : XD_REGISTER_P (REGNO) ? DFmode \ + : TARGET_SHMEDIA && ! HARD_REGNO_CALL_PART_CLOBBERED ((REGNO), DImode) \ + ? DImode \ + : SImode) + +#define FIRST_PSEUDO_REGISTER 154 + +/* Don't count soft frame pointer. */ +#define DWARF_FRAME_REGISTERS (FIRST_PSEUDO_REGISTER - 1) + +/* 1 for registers that have pervasive standard uses + and are not available for the register allocator. + + Mach register is fixed 'cause it's only 10 bits wide for SH1. + It is 32 bits wide for SH2. */ +#define FIXED_REGISTERS \ +{ \ +/* Regular registers. */ \ + 0, 0, 0, 0, 0, 0, 0, 0, \ + 0, 0, 0, 0, 0, 0, 0, 1, \ + /* r16 is reserved, r18 is the former pr. */ \ + 1, 0, 0, 0, 0, 0, 0, 0, \ + /* r24 is reserved for the OS; r25, for the assembler or linker. */ \ + /* r26 is a global variable data pointer; r27 is for constants. */ \ + 1, 1, 1, 1, 0, 0, 0, 0, \ + 0, 0, 0, 0, 0, 0, 0, 0, \ + 0, 0, 0, 0, 0, 0, 0, 0, \ + 0, 0, 0, 0, 0, 0, 0, 0, \ + 0, 0, 0, 0, 0, 0, 0, 1, \ +/* FP registers. */ \ + 0, 0, 0, 0, 0, 0, 0, 0, \ + 0, 0, 0, 0, 0, 0, 0, 0, \ + 0, 0, 0, 0, 0, 0, 0, 0, \ + 0, 0, 0, 0, 0, 0, 0, 0, \ + 0, 0, 0, 0, 0, 0, 0, 0, \ + 0, 0, 0, 0, 0, 0, 0, 0, \ + 0, 0, 0, 0, 0, 0, 0, 0, \ + 0, 0, 0, 0, 0, 0, 0, 0, \ +/* Branch target registers. */ \ + 0, 0, 0, 0, 0, 0, 0, 0, \ +/* XD registers. */ \ + 0, 0, 0, 0, 0, 0, 0, 0, \ +/*"gbr", "ap", "pr", "t", "mach", "macl", "fpul", "fpscr", */ \ + 1, 1, 1, 1, 1, 1, 0, 1, \ +/*"rap", "sfp" */ \ + 1, 1, \ +} + +/* 1 for registers not available across function calls. + These must include the FIXED_REGISTERS and also any + registers that can be used without being saved. + The latter must include the registers where values are returned + and the register where structure-value addresses are passed. + Aside from that, you can include as many other registers as you like. */ +#define CALL_USED_REGISTERS \ +{ \ +/* Regular registers. */ \ + 1, 1, 1, 1, 1, 1, 1, 1, \ + /* R8 and R9 are call-clobbered on SH5, but not on earlier SH ABIs. \ + Only the lower 32bits of R10-R14 are guaranteed to be preserved \ + across SH5 function calls. */ \ + 0, 0, 0, 0, 0, 0, 0, 1, \ + 1, 1, 1, 1, 1, 1, 1, 1, \ + 1, 1, 1, 1, 0, 0, 0, 0, \ + 0, 0, 0, 0, 1, 1, 1, 1, \ + 1, 1, 1, 1, 0, 0, 0, 0, \ + 0, 0, 0, 0, 0, 0, 0, 0, \ + 0, 0, 0, 0, 1, 1, 1, 1, \ +/* FP registers. */ \ + 1, 1, 1, 1, 1, 1, 1, 1, \ + 1, 1, 1, 1, 0, 0, 0, 0, \ + 1, 1, 1, 1, 1, 1, 1, 1, \ + 1, 1, 1, 1, 1, 1, 1, 1, \ + 1, 1, 1, 1, 0, 0, 0, 0, \ + 0, 0, 0, 0, 0, 0, 0, 0, \ + 0, 0, 0, 0, 0, 0, 0, 0, \ + 0, 0, 0, 0, 0, 0, 0, 0, \ +/* Branch target registers. */ \ + 1, 1, 1, 1, 1, 0, 0, 0, \ +/* XD registers. */ \ + 1, 1, 1, 1, 1, 1, 0, 0, \ +/*"gbr", "ap", "pr", "t", "mach", "macl", "fpul", "fpscr", */ \ + 1, 1, 1, 1, 1, 1, 1, 1, \ +/*"rap", "sfp" */ \ + 1, 1, \ +} + +/* TARGET_CONDITIONAL_REGISTER_USAGE might want to make a register + call-used, yet fixed, like PIC_OFFSET_TABLE_REGNUM. */ +#define CALL_REALLY_USED_REGISTERS CALL_USED_REGISTERS + +/* Only the lower 32-bits of R10-R14 are guaranteed to be preserved + across SHcompact function calls. We can't tell whether a called + function is SHmedia or SHcompact, so we assume it may be when + compiling SHmedia code with the 32-bit ABI, since that's the only + ABI that can be linked with SHcompact code. */ +#define HARD_REGNO_CALL_PART_CLOBBERED(REGNO,MODE) \ + (TARGET_SHMEDIA32 \ + && GET_MODE_SIZE (MODE) > 4 \ + && (((REGNO) >= FIRST_GENERAL_REG + 10 \ + && (REGNO) <= FIRST_GENERAL_REG + 15) \ + || TARGET_REGISTER_P (REGNO) \ + || (REGNO) == PR_MEDIA_REG)) + +/* Return number of consecutive hard regs needed starting at reg REGNO + to hold something of mode MODE. + This is ordinarily the length in words of a value of mode MODE + but can be less for certain modes in special long registers. + + On the SH all but the XD regs are UNITS_PER_WORD bits wide. */ +#define HARD_REGNO_NREGS(REGNO, MODE) \ + (XD_REGISTER_P (REGNO) \ + ? ((GET_MODE_SIZE (MODE) + (2*UNITS_PER_WORD - 1)) / (2*UNITS_PER_WORD)) \ + : (TARGET_SHMEDIA && FP_REGISTER_P (REGNO)) \ + ? ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD/2 - 1) / (UNITS_PER_WORD/2)) \ + : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)) + +/* Value is 1 if hard register REGNO can hold a value of machine-mode MODE. */ +#define HARD_REGNO_MODE_OK(REGNO, MODE) \ + sh_hard_regno_mode_ok ((REGNO), (MODE)) + +/* Value is 1 if it is a good idea to tie two pseudo registers + when one has mode MODE1 and one has mode MODE2. + If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2, + for any hard reg, then this must be 0 for correct output. + That's the case for xd registers: we don't hold SFmode values in + them, so we can't tie an SFmode pseudos with one in another + floating-point mode. */ +#define MODES_TIEABLE_P(MODE1, MODE2) \ + ((MODE1) == (MODE2) \ + || (TARGET_SHMEDIA \ + && GET_MODE_SIZE (MODE1) == GET_MODE_SIZE (MODE2) \ + && INTEGRAL_MODE_P (MODE1) && INTEGRAL_MODE_P (MODE2)) \ + || (GET_MODE_CLASS (MODE1) == GET_MODE_CLASS (MODE2) \ + && (TARGET_SHMEDIA ? ((GET_MODE_SIZE (MODE1) <= 4) \ + && (GET_MODE_SIZE (MODE2) <= 4)) \ + : ((MODE1) != SFmode && (MODE2) != SFmode)))) + +/* A C expression that is nonzero if hard register NEW_REG can be + considered for use as a rename register for OLD_REG register */ +#define HARD_REGNO_RENAME_OK(OLD_REG, NEW_REG) \ + sh_hard_regno_rename_ok (OLD_REG, NEW_REG) + +/* Specify the registers used for certain standard purposes. + The values of these macros are register numbers. */ + +/* Define this if the program counter is overloaded on a register. */ +/* #define PC_REGNUM 15*/ + +/* Register to use for pushing function arguments. */ +#define STACK_POINTER_REGNUM SP_REG + +/* Base register for access to local variables of the function. */ +#define HARD_FRAME_POINTER_REGNUM FP_REG + +/* Base register for access to local variables of the function. */ +#define FRAME_POINTER_REGNUM 153 + +/* Fake register that holds the address on the stack of the + current function's return address. */ +#define RETURN_ADDRESS_POINTER_REGNUM RAP_REG + +/* Register to hold the addressing base for position independent + code access to data items. */ +#define PIC_OFFSET_TABLE_REGNUM (flag_pic ? PIC_REG : INVALID_REGNUM) + +#define GOT_SYMBOL_NAME "*_GLOBAL_OFFSET_TABLE_" + +/* Definitions for register eliminations. + + We have three registers that can be eliminated on the SH. First, the + frame pointer register can often be eliminated in favor of the stack + pointer register. Secondly, the argument pointer register can always be + eliminated; it is replaced with either the stack or frame pointer. + Third, there is the return address pointer, which can also be replaced + with either the stack or the frame pointer. + + This is an array of structures. Each structure initializes one pair + of eliminable registers. The "from" register number is given first, + followed by "to". Eliminations of the same "from" register are listed + in order of preference. + + If you add any registers here that are not actually hard registers, + and that have any alternative of elimination that doesn't always + apply, you need to amend calc_live_regs to exclude it, because + reload spills all eliminable registers where it sees an + can_eliminate == 0 entry, thus making them 'live' . + If you add any hard registers that can be eliminated in different + ways, you have to patch reload to spill them only when all alternatives + of elimination fail. */ +#define ELIMINABLE_REGS \ +{{ HARD_FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ + { FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ + { FRAME_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM}, \ + { RETURN_ADDRESS_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ + { RETURN_ADDRESS_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM}, \ + { ARG_POINTER_REGNUM, STACK_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 = initial_elimination_offset ((FROM), (TO)) + +/* Base register for access to arguments of the function. */ +#define ARG_POINTER_REGNUM AP_REG + +/* Register in which the static-chain is passed to a function. */ +#define STATIC_CHAIN_REGNUM (TARGET_SH5 ? 1 : 3) + +/* Don't default to pcc-struct-return, because we have already specified + exactly how to return structures in the TARGET_RETURN_IN_MEMORY + target hook. */ +#define DEFAULT_PCC_STRUCT_RETURN 0 + +#define SHMEDIA_REGS_STACK_ADJUST() \ + (TARGET_SHCOMPACT && crtl->saves_all_registers \ + ? (8 * (/* r28-r35 */ 8 + /* r44-r59 */ 16 + /* tr5-tr7 */ 3) \ + + (TARGET_FPU_ANY ? 4 * (/* fr36 - fr63 */ 28) : 0)) \ + : 0) + + +/* Define the classes of registers for register constraints in the + machine description. Also define ranges of constants. + + One of the classes must always be named ALL_REGS and include all hard regs. + If there is more than one class, another class must be named NO_REGS + and contain no registers. + + The name GENERAL_REGS must be the name of a class (or an alias for + another name such as ALL_REGS). This is the class of registers + that is allowed by "g" or "r" in a register constraint. + Also, registers outside this class are allocated only when + instructions express preferences for them. + + The classes must be numbered in nondecreasing order; that is, + a larger-numbered class must never be contained completely + in a smaller-numbered class. + + For any two classes, it is very desirable that there be another + class that represents their union. + + The SH has two sorts of general registers, R0 and the rest. R0 can + be used as the destination of some of the arithmetic ops. There are + also some special purpose registers; the T bit register, the + Procedure Return Register and the Multiply Accumulate Registers. + + Place GENERAL_REGS after FPUL_REGS so that it will be preferred by + reg_class_subunion. We don't want to have an actual union class + of these, because it would only be used when both classes are calculated + to give the same cost, but there is only one FPUL register. + Besides, regclass fails to notice the different REGISTER_MOVE_COSTS + applying to the actual instruction alternative considered. E.g., the + y/r alternative of movsi_ie is considered to have no more cost that + the r/r alternative, which is patently untrue. */ +enum reg_class +{ + NO_REGS, + R0_REGS, + PR_REGS, + T_REGS, + MAC_REGS, + FPUL_REGS, + SIBCALL_REGS, + NON_SP_REGS, + GENERAL_REGS, + FP0_REGS, + FP_REGS, + DF_REGS, + FPSCR_REGS, + GENERAL_FP_REGS, + GENERAL_DF_REGS, + TARGET_REGS, + ALL_REGS, + LIM_REG_CLASSES +}; + +#define N_REG_CLASSES (int) LIM_REG_CLASSES + +/* Give names of register classes as strings for dump file. */ +#define REG_CLASS_NAMES \ +{ \ + "NO_REGS", \ + "R0_REGS", \ + "PR_REGS", \ + "T_REGS", \ + "MAC_REGS", \ + "FPUL_REGS", \ + "SIBCALL_REGS", \ + "NON_SP_REGS", \ + "GENERAL_REGS", \ + "FP0_REGS", \ + "FP_REGS", \ + "DF_REGS", \ + "FPSCR_REGS", \ + "GENERAL_FP_REGS", \ + "GENERAL_DF_REGS", \ + "TARGET_REGS", \ + "ALL_REGS", \ +} + +/* Define which registers fit in which classes. + This is an initializer for a vector of HARD_REG_SET + of length N_REG_CLASSES. */ +#define REG_CLASS_CONTENTS \ +{ \ +/* NO_REGS: */ \ + { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, \ +/* R0_REGS: */ \ + { 0x00000001, 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, \ +/* PR_REGS: */ \ + { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00040000 }, \ +/* T_REGS: */ \ + { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00080000 }, \ +/* MAC_REGS: */ \ + { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00300000 }, \ +/* FPUL_REGS: */ \ + { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00400000 }, \ +/* SIBCALL_REGS: Initialized in TARGET_CONDITIONAL_REGISTER_USAGE. */ \ + { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, \ +/* NON_SP_REGS: */ \ + { 0xffff7fff, 0xffffffff, 0x00000000, 0x00000000, 0x03020000 }, \ +/* GENERAL_REGS: */ \ + { 0xffffffff, 0xffffffff, 0x00000000, 0x00000000, 0x03020000 }, \ +/* FP0_REGS: */ \ + { 0x00000000, 0x00000000, 0x00000001, 0x00000000, 0x00000000 }, \ +/* FP_REGS: */ \ + { 0x00000000, 0x00000000, 0xffffffff, 0xffffffff, 0x00000000 }, \ +/* DF_REGS: */ \ + { 0x00000000, 0x00000000, 0xffffffff, 0xffffffff, 0x0000ff00 }, \ +/* FPSCR_REGS: */ \ + { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00800000 }, \ +/* GENERAL_FP_REGS: */ \ + { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0x03020000 }, \ +/* GENERAL_DF_REGS: */ \ + { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0x0302ff00 }, \ +/* TARGET_REGS: */ \ + { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x000000ff }, \ +/* ALL_REGS: */ \ + { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0x03ffffff }, \ +} + +/* The same information, inverted: + Return the class number of the smallest class containing + reg number REGNO. This could be a conditional expression + or could index an array. */ +extern enum reg_class regno_reg_class[FIRST_PSEUDO_REGISTER]; +#define REGNO_REG_CLASS(REGNO) regno_reg_class[(REGNO)] + +/* When this hook returns true for MODE, the compiler allows + registers explicitly used in the rtl to be used as spill registers + but prevents the compiler from extending the lifetime of these + registers. */ +#define TARGET_SMALL_REGISTER_CLASSES_FOR_MODE_P \ + sh_small_register_classes_for_mode_p + +/* The order in which register should be allocated. */ +/* Sometimes FP0_REGS becomes the preferred class of a floating point pseudo, + and GENERAL_FP_REGS the alternate class. Since FP0 is likely to be + spilled or used otherwise, we better have the FP_REGS allocated first. */ +#define REG_ALLOC_ORDER \ + {/* Caller-saved FPRs */ \ + 65, 66, 67, 68, 69, 70, 71, 64, \ + 72, 73, 74, 75, 80, 81, 82, 83, \ + 84, 85, 86, 87, 88, 89, 90, 91, \ + 92, 93, 94, 95, 96, 97, 98, 99, \ + /* Callee-saved FPRs */ \ + 76, 77, 78, 79,100,101,102,103, \ + 104,105,106,107,108,109,110,111, \ + 112,113,114,115,116,117,118,119, \ + 120,121,122,123,124,125,126,127, \ + 136,137,138,139,140,141,142,143, \ + /* FPSCR */ 151, \ + /* Caller-saved GPRs (except 8/9 on SH1-4) */ \ + 1, 2, 3, 7, 6, 5, 4, 0, \ + 8, 9, 17, 19, 20, 21, 22, 23, \ + 36, 37, 38, 39, 40, 41, 42, 43, \ + 60, 61, 62, \ + /* SH1-4 callee-saved saved GPRs / SH5 partially-saved GPRs */ \ + 10, 11, 12, 13, 14, 18, \ + /* SH5 callee-saved GPRs */ \ + 28, 29, 30, 31, 32, 33, 34, 35, \ + 44, 45, 46, 47, 48, 49, 50, 51, \ + 52, 53, 54, 55, 56, 57, 58, 59, \ + /* FPUL */ 150, \ + /* SH5 branch target registers */ \ + 128,129,130,131,132,133,134,135, \ + /* Fixed registers */ \ + 15, 16, 24, 25, 26, 27, 63,144, \ + 145,146,147,148,149,152,153 } + +/* The class value for index registers, and the one for base regs. */ +#define INDEX_REG_CLASS \ + (!ALLOW_INDEXED_ADDRESS ? NO_REGS : TARGET_SHMEDIA ? GENERAL_REGS : R0_REGS) +#define BASE_REG_CLASS GENERAL_REGS + +/* Defines for sh.md and constraints.md. */ + +#define CONST_OK_FOR_I08(VALUE) (((HOST_WIDE_INT)(VALUE))>= -128 \ + && ((HOST_WIDE_INT)(VALUE)) <= 127) +#define CONST_OK_FOR_I16(VALUE) (((HOST_WIDE_INT)(VALUE)) >= -32768 \ + && ((HOST_WIDE_INT)(VALUE)) <= 32767) + +#define CONST_OK_FOR_J16(VALUE) \ + ((HOST_BITS_PER_WIDE_INT >= 64 && (VALUE) == (HOST_WIDE_INT) 0xffffffff) \ + || (HOST_BITS_PER_WIDE_INT >= 64 && (VALUE) == (HOST_WIDE_INT) -1 << 32)) + +#define CONST_OK_FOR_K08(VALUE) (((HOST_WIDE_INT)(VALUE))>= 0 \ + && ((HOST_WIDE_INT)(VALUE)) <= 255) + +#define ZERO_EXTRACT_ANDMASK(EXTRACT_SZ_RTX, EXTRACT_POS_RTX)\ + (((1 << INTVAL (EXTRACT_SZ_RTX)) - 1) << INTVAL (EXTRACT_POS_RTX)) + +/* Return the maximum number of consecutive registers + needed to represent mode MODE in a register of class CLASS. + + If TARGET_SHMEDIA, we need two FP registers per word. + Otherwise we will need at most one register per word. */ +#define CLASS_MAX_NREGS(CLASS, MODE) \ + (TARGET_SHMEDIA \ + && TEST_HARD_REG_BIT (reg_class_contents[CLASS], FIRST_FP_REG) \ + ? (GET_MODE_SIZE (MODE) + UNITS_PER_WORD/2 - 1) / (UNITS_PER_WORD/2) \ + : (GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD) + +/* If defined, gives a class of registers that cannot be used as the + operand of a SUBREG that changes the mode of the object illegally. + ??? We need to renumber the internal numbers for the frnn registers + when in little endian in order to allow mode size changes. */ +#define CANNOT_CHANGE_MODE_CLASS(FROM, TO, CLASS) \ + sh_cannot_change_mode_class (FROM, TO, CLASS) + +/* Stack layout; function entry, exit and calling. */ + +/* Define the number of registers that can hold parameters. + These macros are used only in other macro definitions below. */ +#define NPARM_REGS(MODE) \ + (TARGET_FPU_ANY && (MODE) == SFmode \ + ? (TARGET_SH5 ? 12 : 8) \ + : (TARGET_SH4 || TARGET_SH2A_DOUBLE) \ + && (GET_MODE_CLASS (MODE) == MODE_FLOAT \ + || GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT) \ + ? (TARGET_SH5 ? 12 : 8) \ + : (TARGET_SH5 ? 8 : 4)) + +#define FIRST_PARM_REG (FIRST_GENERAL_REG + (TARGET_SH5 ? 2 : 4)) +#define FIRST_RET_REG (FIRST_GENERAL_REG + (TARGET_SH5 ? 2 : 0)) + +#define FIRST_FP_PARM_REG (FIRST_FP_REG + (TARGET_SH5 ? 0 : 4)) +#define FIRST_FP_RET_REG FIRST_FP_REG + +/* Define this if pushing a word on the stack + makes the stack pointer a smaller address. */ +#define STACK_GROWS_DOWNWARD + +/* Define this macro to nonzero if the addresses of local variable slots + are at negative offsets from the frame pointer. */ +#define FRAME_GROWS_DOWNWARD 1 + +/* Offset from the frame pointer to the first local variable slot to + be allocated. */ +#define STARTING_FRAME_OFFSET 0 + +/* If we generate an insn to push BYTES bytes, + this says how many the stack pointer really advances by. */ +/* Don't define PUSH_ROUNDING, since the hardware doesn't do this. + When PUSH_ROUNDING is not defined, PARM_BOUNDARY will cause gcc to + do correct alignment. */ +#if 0 +#define PUSH_ROUNDING(NPUSHED) (((NPUSHED) + 3) & ~3) +#endif + +/* Offset of first parameter from the argument pointer register value. */ +#define FIRST_PARM_OFFSET(FNDECL) 0 + +/* Value is the number of bytes of arguments automatically popped when + calling a subroutine. + CUM is the accumulated argument list. + + On SHcompact, the call trampoline pops arguments off the stack. */ +#define CALL_POPS_ARGS(CUM) (TARGET_SHCOMPACT ? (CUM).stack_regs * 8 : 0) + +/* Some subroutine macros specific to this machine. */ + +#define BASE_RETURN_VALUE_REG(MODE) \ + ((TARGET_FPU_ANY && ((MODE) == SFmode)) \ + ? FIRST_FP_RET_REG \ + : TARGET_FPU_ANY && (MODE) == SCmode \ + ? FIRST_FP_RET_REG \ + : (TARGET_FPU_DOUBLE \ + && ((MODE) == DFmode || (MODE) == SFmode \ + || (MODE) == DCmode || (MODE) == SCmode )) \ + ? FIRST_FP_RET_REG \ + : FIRST_RET_REG) + +#define BASE_ARG_REG(MODE) \ + ((TARGET_SH2E && ((MODE) == SFmode)) \ + ? FIRST_FP_PARM_REG \ + : (TARGET_SH4 || TARGET_SH2A_DOUBLE) && (GET_MODE_CLASS (MODE) == MODE_FLOAT \ + || GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT)\ + ? FIRST_FP_PARM_REG \ + : FIRST_PARM_REG) + +/* 1 if N is a possible register number for function argument passing. */ +/* ??? There are some callers that pass REGNO as int, and others that pass + it as unsigned. We get warnings unless we do casts everywhere. */ +#define FUNCTION_ARG_REGNO_P(REGNO) \ + (((unsigned) (REGNO) >= (unsigned) FIRST_PARM_REG \ + && (unsigned) (REGNO) < (unsigned) (FIRST_PARM_REG + NPARM_REGS (SImode)))\ + || (TARGET_FPU_ANY \ + && (unsigned) (REGNO) >= (unsigned) FIRST_FP_PARM_REG \ + && (unsigned) (REGNO) < (unsigned) (FIRST_FP_PARM_REG \ + + NPARM_REGS (SFmode)))) + +/* Define a data type for recording info about an argument list + during the scan of that argument list. This data type should + hold all necessary information about the function itself + and about the args processed so far, enough to enable macros + such as FUNCTION_ARG to determine where the next arg should go. + + On SH, this is a single integer, which is a number of words + of arguments scanned so far (including the invisible argument, + if any, which holds the structure-value-address). + Thus NARGREGS or more means all following args should go on the stack. */ +enum sh_arg_class { SH_ARG_INT = 0, SH_ARG_FLOAT = 1 }; +struct sh_args { + int arg_count[2]; + int force_mem; + /* Nonzero if a prototype is available for the function. */ + int prototype_p; + /* The number of an odd floating-point register, that should be used + for the next argument of type float. */ + int free_single_fp_reg; + /* Whether we're processing an outgoing function call. */ + int outgoing; + /* The number of general-purpose registers that should have been + used to pass partial arguments, that are passed totally on the + stack. On SHcompact, a call trampoline will pop them off the + stack before calling the actual function, and, if the called + function is implemented in SHcompact mode, the incoming arguments + decoder will push such arguments back onto the stack. For + incoming arguments, STACK_REGS also takes into account other + arguments passed by reference, that the decoder will also push + onto the stack. */ + int stack_regs; + /* The number of general-purpose registers that should have been + used to pass arguments, if the arguments didn't have to be passed + by reference. */ + int byref_regs; + /* Set as by shcompact_byref if the current argument is to be passed + by reference. */ + int byref; + + /* call_cookie is a bitmask used by call expanders, as well as + function prologue and epilogues, to allow SHcompact to comply + with the SH5 32-bit ABI, that requires 64-bit registers to be + used even though only the lower 32-bit half is visible in + SHcompact mode. The strategy is to call SHmedia trampolines. + + The alternatives for each of the argument-passing registers are + (a) leave it unchanged; (b) pop it off the stack; (c) load its + contents from the address in it; (d) add 8 to it, storing the + result in the next register, then (c); (e) copy it from some + floating-point register, + + Regarding copies from floating-point registers, r2 may only be + copied from dr0. r3 may be copied from dr0 or dr2. r4 maybe + copied from dr0, dr2 or dr4. r5 maybe copied from dr0, dr2, + dr4 or dr6. r6 may be copied from dr0, dr2, dr4, dr6 or dr8. + r7 through to r9 may be copied from dr0, dr2, dr4, dr8, dr8 or + dr10. + + The bit mask is structured as follows: + + - 1 bit to tell whether to set up a return trampoline. + + - 3 bits to count the number consecutive registers to pop off the + stack. + + - 4 bits for each of r9, r8, r7 and r6. + + - 3 bits for each of r5, r4, r3 and r2. + + - 3 bits set to 0 (the most significant ones) + + 3 2 1 0 + 1098 7654 3210 9876 5432 1098 7654 3210 + FLPF LPFL PFLP FFLP FFLP FFLP FFLP SSST + 2223 3344 4555 6666 7777 8888 9999 SSS- + + - If F is set, the register must be copied from an FP register, + whose number is encoded in the remaining bits. + + - Else, if L is set, the register must be loaded from the address + contained in it. If the P bit is *not* set, the address of the + following dword should be computed first, and stored in the + following register. + + - Else, if P is set, the register alone should be popped off the + stack. + + - After all this processing, the number of registers represented + in SSS will be popped off the stack. This is an optimization + for pushing/popping consecutive registers, typically used for + varargs and large arguments partially passed in registers. + + - If T is set, a return trampoline will be set up for 64-bit + return values to be split into 2 32-bit registers. */ + long call_cookie; + + /* This is set to nonzero when the call in question must use the Renesas ABI, + even without the -mrenesas option. */ + int renesas_abi; +}; + +#define CALL_COOKIE_RET_TRAMP_SHIFT 0 +#define CALL_COOKIE_RET_TRAMP(VAL) ((VAL) << CALL_COOKIE_RET_TRAMP_SHIFT) +#define CALL_COOKIE_STACKSEQ_SHIFT 1 +#define CALL_COOKIE_STACKSEQ(VAL) ((VAL) << CALL_COOKIE_STACKSEQ_SHIFT) +#define CALL_COOKIE_STACKSEQ_GET(COOKIE) \ + (((COOKIE) >> CALL_COOKIE_STACKSEQ_SHIFT) & 7) +#define CALL_COOKIE_INT_REG_SHIFT(REG) \ + (4 * (7 - (REG)) + (((REG) <= 2) ? ((REG) - 2) : 1) + 3) +#define CALL_COOKIE_INT_REG(REG, VAL) \ + ((VAL) << CALL_COOKIE_INT_REG_SHIFT (REG)) +#define CALL_COOKIE_INT_REG_GET(COOKIE, REG) \ + (((COOKIE) >> CALL_COOKIE_INT_REG_SHIFT (REG)) & ((REG) < 4 ? 7 : 15)) + +#define CUMULATIVE_ARGS struct sh_args + +#define GET_SH_ARG_CLASS(MODE) \ + ((TARGET_FPU_ANY && (MODE) == SFmode) \ + ? SH_ARG_FLOAT \ + /* There's no mention of complex float types in the SH5 ABI, so we + should presumably handle them as aggregate types. */ \ + : TARGET_SH5 && GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT \ + ? SH_ARG_INT \ + : TARGET_FPU_DOUBLE && (GET_MODE_CLASS (MODE) == MODE_FLOAT \ + || GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT) \ + ? SH_ARG_FLOAT : SH_ARG_INT) + +#define ROUND_ADVANCE(SIZE) \ + (((SIZE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD) + +/* Round a register number up to a proper boundary for an arg of mode + MODE. + + The SH doesn't care about double alignment, so we only + round doubles to even regs when asked to explicitly. */ +#define ROUND_REG(CUM, MODE) \ + (((TARGET_ALIGN_DOUBLE \ + || ((TARGET_SH4 || TARGET_SH2A_DOUBLE) \ + && ((MODE) == DFmode || (MODE) == DCmode) \ + && (CUM).arg_count[(int) SH_ARG_FLOAT] < NPARM_REGS (MODE))) \ + && GET_MODE_UNIT_SIZE ((MODE)) > UNITS_PER_WORD) \ + ? ((CUM).arg_count[(int) GET_SH_ARG_CLASS (MODE)] \ + + ((CUM).arg_count[(int) GET_SH_ARG_CLASS (MODE)] & 1)) \ + : (CUM).arg_count[(int) GET_SH_ARG_CLASS (MODE)]) + +/* Initialize a variable CUM of type CUMULATIVE_ARGS + for a call to a function whose data type is FNTYPE. + For a library call, FNTYPE is 0. + + On SH, the offset always starts at 0: the first parm reg is always + the same reg for a given argument class. + + For TARGET_HITACHI, the structure value pointer is passed in memory. */ +#define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, FNDECL, N_NAMED_ARGS) \ + sh_init_cumulative_args (& (CUM), (FNTYPE), (LIBNAME), (FNDECL),\ + (N_NAMED_ARGS), VOIDmode) + +#define INIT_CUMULATIVE_LIBCALL_ARGS(CUM, MODE, LIBNAME) \ + sh_init_cumulative_args (& (CUM), NULL_TREE, (LIBNAME), NULL_TREE, 0, (MODE)) + +/* Return boolean indicating arg of mode MODE will be passed in a reg. + This macro is only used in this file. */ +#define PASS_IN_REG_P(CUM, MODE, TYPE) \ + (((TYPE) == 0 \ + || (! TREE_ADDRESSABLE ((TYPE)) \ + && (! (TARGET_HITACHI || (CUM).renesas_abi) \ + || ! (AGGREGATE_TYPE_P (TYPE) \ + || (!TARGET_FPU_ANY \ + && (GET_MODE_CLASS (MODE) == MODE_FLOAT \ + && GET_MODE_SIZE (MODE) > GET_MODE_SIZE (SFmode))))))) \ + && ! (CUM).force_mem \ + && (TARGET_SH2E \ + ? ((MODE) == BLKmode \ + ? (((CUM).arg_count[(int) SH_ARG_INT] * UNITS_PER_WORD \ + + int_size_in_bytes (TYPE)) \ + <= NPARM_REGS (SImode) * UNITS_PER_WORD) \ + : ((ROUND_REG((CUM), (MODE)) \ + + HARD_REGNO_NREGS (BASE_ARG_REG (MODE), (MODE))) \ + <= NPARM_REGS (MODE))) \ + : ROUND_REG ((CUM), (MODE)) < NPARM_REGS (MODE))) + +/* By accident we got stuck with passing SCmode on SH4 little endian + in two registers that are nominally successive - which is different from + two single SFmode values, where we take endianness translation into + account. That does not work at all if an odd number of registers is + already in use, so that got fixed, but library functions are still more + likely to use complex numbers without mixing them with SFmode arguments + (which in C would have to be structures), so for the sake of ABI + compatibility the way SCmode values are passed when an even number of + FP registers is in use remains different from a pair of SFmode values for + now. + I.e.: + foo (double); a: fr5,fr4 + foo (float a, float b); a: fr5 b: fr4 + foo (__complex float a); a.real fr4 a.imag: fr5 - for consistency, + this should be the other way round... + foo (float a, __complex float b); a: fr5 b.real: fr4 b.imag: fr7 */ +#define FUNCTION_ARG_SCmode_WART 1 + +/* If an argument of size 5, 6 or 7 bytes is to be passed in a 64-bit + register in SHcompact mode, it must be padded in the most + significant end. This means that passing it by reference wouldn't + pad properly on a big-endian machine. In this particular case, we + pass this argument on the stack, in a way that the call trampoline + will load its value into the appropriate register. */ +#define SHCOMPACT_FORCE_ON_STACK(MODE,TYPE) \ + ((MODE) == BLKmode \ + && TARGET_SHCOMPACT \ + && TARGET_BIG_ENDIAN \ + && int_size_in_bytes (TYPE) > 4 \ + && int_size_in_bytes (TYPE) < 8) + +/* Minimum alignment for an argument to be passed by callee-copy + reference. We need such arguments to be aligned to 8 byte + boundaries, because they'll be loaded using quad loads. */ +#define SH_MIN_ALIGN_FOR_CALLEE_COPY (8 * BITS_PER_UNIT) + +/* The SH5 ABI requires floating-point arguments to be passed to + functions without a prototype in both an FP register and a regular + register or the stack. When passing the argument in both FP and + general-purpose registers, list the FP register first. */ +#define SH5_PROTOTYPELESS_FLOAT_ARG(CUM,MODE) \ + (gen_rtx_PARALLEL \ + ((MODE), \ + gen_rtvec (2, \ + gen_rtx_EXPR_LIST \ + (VOIDmode, \ + ((CUM).arg_count[(int) SH_ARG_INT] < NPARM_REGS (SImode) \ + ? gen_rtx_REG ((MODE), FIRST_FP_PARM_REG \ + + (CUM).arg_count[(int) SH_ARG_FLOAT]) \ + : NULL_RTX), \ + const0_rtx), \ + gen_rtx_EXPR_LIST \ + (VOIDmode, \ + ((CUM).arg_count[(int) SH_ARG_INT] < NPARM_REGS (SImode) \ + ? gen_rtx_REG ((MODE), FIRST_PARM_REG \ + + (CUM).arg_count[(int) SH_ARG_INT]) \ + : gen_rtx_REG ((MODE), FIRST_FP_PARM_REG \ + + (CUM).arg_count[(int) SH_ARG_FLOAT])), \ + const0_rtx)))) + +/* The SH5 ABI requires regular registers or stack slots to be + reserved for floating-point arguments. Registers are taken care of + in FUNCTION_ARG_ADVANCE, but stack slots must be reserved here. + Unfortunately, there's no way to just reserve a stack slot, so + we'll end up needlessly storing a copy of the argument in the + stack. For incoming arguments, however, the PARALLEL will be + optimized to the register-only form, and the value in the stack + slot won't be used at all. */ +#define SH5_PROTOTYPED_FLOAT_ARG(CUM,MODE,REG) \ + ((CUM).arg_count[(int) SH_ARG_INT] < NPARM_REGS (SImode) \ + ? gen_rtx_REG ((MODE), (REG)) \ + : gen_rtx_PARALLEL ((MODE), \ + gen_rtvec (2, \ + gen_rtx_EXPR_LIST \ + (VOIDmode, NULL_RTX, \ + const0_rtx), \ + gen_rtx_EXPR_LIST \ + (VOIDmode, gen_rtx_REG ((MODE), \ + (REG)), \ + const0_rtx)))) + +#define SH5_WOULD_BE_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED) \ + (TARGET_SH5 \ + && ((MODE) == BLKmode || (MODE) == TImode || (MODE) == CDImode \ + || (MODE) == DCmode) \ + && ((CUM).arg_count[(int) SH_ARG_INT] \ + + (((MODE) == BLKmode ? int_size_in_bytes (TYPE) \ + : GET_MODE_SIZE (MODE)) \ + + 7) / 8) > NPARM_REGS (SImode)) + +/* Perform any needed actions needed for a function that is receiving a + variable number of arguments. */ + +/* Call the function profiler with a given profile label. + We use two .aligns, so as to make sure that both the .long is aligned + on a 4 byte boundary, and that the .long is a fixed distance (2 bytes) + from the trapa instruction. */ +#define FUNCTION_PROFILER(STREAM,LABELNO) \ +{ \ + if (TARGET_SHMEDIA) \ + { \ + fprintf((STREAM), "\tmovi\t33,r0\n"); \ + fprintf((STREAM), "\ttrapa\tr0\n"); \ + asm_fprintf((STREAM), "\t.long\t%LLP%d\n", (LABELNO)); \ + } \ + else \ + { \ + fprintf((STREAM), "\t.align\t2\n"); \ + fprintf((STREAM), "\ttrapa\t#33\n"); \ + fprintf((STREAM), "\t.align\t2\n"); \ + asm_fprintf((STREAM), "\t.long\t%LLP%d\n", (LABELNO)); \ + } \ +} + +/* Define this macro if the code for function profiling should come + before the function prologue. Normally, the profiling code comes + after. */ +#define PROFILE_BEFORE_PROLOGUE + +/* EXIT_IGNORE_STACK should be nonzero if, when returning from a function, + the stack pointer does not matter. The value is tested only in + functions that have frame pointers. + No definition is equivalent to always zero. */ +#define EXIT_IGNORE_STACK 1 + +/* + On the SH, the trampoline looks like + 2 0002 D202 mov.l l2,r2 + 1 0000 D301 mov.l l1,r3 + 3 0004 422B jmp @r2 + 4 0006 0009 nop + 5 0008 00000000 l1: .long area + 6 000c 00000000 l2: .long function */ + +/* Length in units of the trampoline for entering a nested function. */ +#define TRAMPOLINE_SIZE (TARGET_SHMEDIA64 ? 40 : TARGET_SH5 ? 24 : 16) + +/* Alignment required for a trampoline in bits. */ +#define TRAMPOLINE_ALIGNMENT \ + ((CACHE_LOG < 3 \ + || (optimize_size && ! (TARGET_HARD_SH4 || TARGET_SH5))) ? 32 \ + : TARGET_SHMEDIA ? 256 : 64) + +/* A C expression whose value is RTL representing the value of the return + address for the frame COUNT steps up from the current frame. + FRAMEADDR is already the frame pointer of the COUNT frame, so we + can ignore COUNT. */ +#define RETURN_ADDR_RTX(COUNT, FRAME) \ + (((COUNT) == 0) ? sh_get_pr_initial_val () : NULL_RTX) + +/* A C expression whose value is RTL representing the location of the + incoming return address at the beginning of any function, before the + prologue. This RTL is either a REG, indicating that the return + value is saved in REG, or a MEM representing a location in + the stack. */ +#define INCOMING_RETURN_ADDR_RTX \ + gen_rtx_REG (Pmode, TARGET_SHMEDIA ? PR_MEDIA_REG : PR_REG) + +/* Addressing modes, and classification of registers for them. */ +#define HAVE_POST_INCREMENT TARGET_SH1 +#define HAVE_PRE_DECREMENT TARGET_SH1 + +#define USE_LOAD_POST_INCREMENT(mode) ((mode == SImode || mode == DImode) \ + ? 0 : TARGET_SH1) +#define USE_LOAD_PRE_DECREMENT(mode) 0 +#define USE_STORE_POST_INCREMENT(mode) 0 +#define USE_STORE_PRE_DECREMENT(mode) ((mode == SImode || mode == DImode) \ + ? 0 : TARGET_SH1) + +#define MOVE_BY_PIECES_P(SIZE, ALIGN) \ + (move_by_pieces_ninsns (SIZE, ALIGN, MOVE_MAX_PIECES + 1) \ + < (optimize_size ? 2 : ((ALIGN >= 32) ? 16 : 2))) + +#define STORE_BY_PIECES_P(SIZE, ALIGN) \ + (move_by_pieces_ninsns (SIZE, ALIGN, STORE_MAX_PIECES + 1) \ + < (optimize_size ? 2 : ((ALIGN >= 32) ? 16 : 2))) + +#define SET_BY_PIECES_P(SIZE, ALIGN) STORE_BY_PIECES_P(SIZE, ALIGN) + +/* Macros to check register numbers against specific register classes. */ + +/* These assume that REGNO is a hard or pseudo reg number. + They give nonzero only if REGNO is a hard reg of the suitable class + or a pseudo reg currently allocated to a suitable hard reg. + Since they use reg_renumber, they are safe only once reg_renumber + has been allocated, which happens in reginfo.c during register + allocation. */ +#define REGNO_OK_FOR_BASE_P(REGNO) \ + (GENERAL_OR_AP_REGISTER_P (REGNO) \ + || GENERAL_OR_AP_REGISTER_P (reg_renumber[(REGNO)])) +#define REGNO_OK_FOR_INDEX_P(REGNO) \ + (TARGET_SHMEDIA \ + ? (GENERAL_REGISTER_P (REGNO) \ + || GENERAL_REGISTER_P ((unsigned) reg_renumber[(REGNO)])) \ + : (REGNO) == R0_REG || (unsigned) reg_renumber[(REGNO)] == R0_REG) + +/* Maximum number of registers that can appear in a valid memory + address. */ +#define MAX_REGS_PER_ADDRESS 2 + +/* Recognize any constant value that is a valid address. */ +#define CONSTANT_ADDRESS_P(X) (GET_CODE (X) == LABEL_REF) + +/* The macros REG_OK_FOR..._P assume that the arg is a REG rtx + and check its validity for a certain class. + The suitable hard regs are always accepted and all pseudo regs + are also accepted if STRICT is not set. */ + +/* Nonzero if X is a reg that can be used as a base reg. */ +#define REG_OK_FOR_BASE_P(X, STRICT) \ + (GENERAL_OR_AP_REGISTER_P (REGNO (X)) \ + || (!STRICT && REGNO (X) >= FIRST_PSEUDO_REGISTER)) + +/* Nonzero if X is a reg that can be used as an index. */ +#define REG_OK_FOR_INDEX_P(X, STRICT) \ + ((TARGET_SHMEDIA ? GENERAL_REGISTER_P (REGNO (X)) \ + : REGNO (X) == R0_REG) \ + || (!STRICT && REGNO (X) >= FIRST_PSEUDO_REGISTER)) + +/* Nonzero if X/OFFSET is a reg that can be used as an index. */ +#define SUBREG_OK_FOR_INDEX_P(X, OFFSET, STRICT) \ + ((TARGET_SHMEDIA ? GENERAL_REGISTER_P (REGNO (X)) \ + : REGNO (X) == R0_REG && OFFSET == 0) \ + || (!STRICT && REGNO (X) >= FIRST_PSEUDO_REGISTER)) + +/* Macros for extra constraints. */ + +#define IS_PC_RELATIVE_LOAD_ADDR_P(OP) \ + ((GET_CODE ((OP)) == LABEL_REF) \ + || (GET_CODE ((OP)) == CONST \ + && GET_CODE (XEXP ((OP), 0)) == PLUS \ + && GET_CODE (XEXP (XEXP ((OP), 0), 0)) == LABEL_REF \ + && CONST_INT_P (XEXP (XEXP ((OP), 0), 1)))) + +#define IS_NON_EXPLICIT_CONSTANT_P(OP) \ + (CONSTANT_P (OP) \ + && !CONST_INT_P (OP) \ + && GET_CODE (OP) != CONST_DOUBLE \ + && (!flag_pic \ + || (LEGITIMATE_PIC_OPERAND_P (OP) \ + && !PIC_ADDR_P (OP) \ + && GET_CODE (OP) != LABEL_REF))) + +/* Check whether OP is a datalabel unspec. */ +#define DATALABEL_REF_NO_CONST_P(OP) \ + (GET_CODE (OP) == UNSPEC \ + && XINT ((OP), 1) == UNSPEC_DATALABEL \ + && XVECLEN ((OP), 0) == 1 \ + && GET_CODE (XVECEXP ((OP), 0, 0)) == LABEL_REF) + +#define GOT_ENTRY_P(OP) \ + (GET_CODE (OP) == CONST && GET_CODE (XEXP ((OP), 0)) == UNSPEC \ + && XINT (XEXP ((OP), 0), 1) == UNSPEC_GOT) + +#define GOTPLT_ENTRY_P(OP) \ + (GET_CODE (OP) == CONST && GET_CODE (XEXP ((OP), 0)) == UNSPEC \ + && XINT (XEXP ((OP), 0), 1) == UNSPEC_GOTPLT) + +#define UNSPEC_GOTOFF_P(OP) \ + (GET_CODE (OP) == UNSPEC && XINT ((OP), 1) == UNSPEC_GOTOFF) + +#define GOTOFF_P(OP) \ + (GET_CODE (OP) == CONST \ + && (UNSPEC_GOTOFF_P (XEXP ((OP), 0)) \ + || (GET_CODE (XEXP ((OP), 0)) == PLUS \ + && UNSPEC_GOTOFF_P (XEXP (XEXP ((OP), 0), 0)) \ + && CONST_INT_P (XEXP (XEXP ((OP), 0), 1))))) + +#define PIC_ADDR_P(OP) \ + (GET_CODE (OP) == CONST && GET_CODE (XEXP ((OP), 0)) == UNSPEC \ + && XINT (XEXP ((OP), 0), 1) == UNSPEC_PIC) + +#define PCREL_SYMOFF_P(OP) \ + (GET_CODE (OP) == CONST \ + && GET_CODE (XEXP ((OP), 0)) == UNSPEC \ + && XINT (XEXP ((OP), 0), 1) == UNSPEC_PCREL_SYMOFF) + +#define NON_PIC_REFERENCE_P(OP) \ + (GET_CODE (OP) == LABEL_REF || GET_CODE (OP) == SYMBOL_REF \ + || (GET_CODE (OP) == CONST \ + && (GET_CODE (XEXP ((OP), 0)) == LABEL_REF \ + || GET_CODE (XEXP ((OP), 0)) == SYMBOL_REF \ + || DATALABEL_REF_NO_CONST_P (XEXP ((OP), 0)))) \ + || (GET_CODE (OP) == CONST && GET_CODE (XEXP ((OP), 0)) == PLUS \ + && (GET_CODE (XEXP (XEXP ((OP), 0), 0)) == SYMBOL_REF \ + || GET_CODE (XEXP (XEXP ((OP), 0), 0)) == LABEL_REF \ + || DATALABEL_REF_NO_CONST_P (XEXP (XEXP ((OP), 0), 0))) \ + && CONST_INT_P (XEXP (XEXP ((OP), 0), 1)))) + +#define PIC_REFERENCE_P(OP) \ + (GOT_ENTRY_P (OP) || GOTPLT_ENTRY_P (OP) \ + || GOTOFF_P (OP) || PIC_ADDR_P (OP)) + +#define MOVI_SHORI_BASE_OPERAND_P(OP) \ + (flag_pic \ + ? (GOT_ENTRY_P (OP) || GOTPLT_ENTRY_P (OP) || GOTOFF_P (OP) \ + || PCREL_SYMOFF_P (OP)) \ + : NON_PIC_REFERENCE_P (OP)) + +#define MAYBE_BASE_REGISTER_RTX_P(X, STRICT) \ + ((REG_P (X) && REG_OK_FOR_BASE_P (X, STRICT)) \ + || (GET_CODE (X) == SUBREG \ + && TRULY_NOOP_TRUNCATION (GET_MODE_BITSIZE (GET_MODE ((X))), \ + GET_MODE_BITSIZE (GET_MODE (SUBREG_REG (X)))) \ + && REG_P (SUBREG_REG (X)) \ + && REG_OK_FOR_BASE_P (SUBREG_REG (X), STRICT))) + +/* Since this must be r0, which is a single register class, we must check + SUBREGs more carefully, to be sure that we don't accept one that extends + outside the class. */ +#define MAYBE_INDEX_REGISTER_RTX_P(X, STRICT) \ + ((REG_P (X) && REG_OK_FOR_INDEX_P (X, STRICT)) \ + || (GET_CODE (X) == SUBREG \ + && TRULY_NOOP_TRUNCATION (GET_MODE_BITSIZE (GET_MODE ((X))), \ + GET_MODE_BITSIZE (GET_MODE (SUBREG_REG (X)))) \ + && REG_P (SUBREG_REG (X)) \ + && SUBREG_OK_FOR_INDEX_P (SUBREG_REG (X), SUBREG_BYTE (X), STRICT))) + +#ifdef REG_OK_STRICT +#define BASE_REGISTER_RTX_P(X) MAYBE_BASE_REGISTER_RTX_P(X, true) +#define INDEX_REGISTER_RTX_P(X) MAYBE_INDEX_REGISTER_RTX_P(X, true) +#else +#define BASE_REGISTER_RTX_P(X) MAYBE_BASE_REGISTER_RTX_P(X, false) +#define INDEX_REGISTER_RTX_P(X) MAYBE_INDEX_REGISTER_RTX_P(X, false) +#endif + +#define ALLOW_INDEXED_ADDRESS \ + ((!TARGET_SHMEDIA32 && !TARGET_SHCOMPACT) || TARGET_ALLOW_INDEXED_ADDRESS) + +/* A C compound statement that attempts to replace X, which is an address + that needs reloading, with a valid memory address for an operand of + mode MODE. WIN is a C statement label elsewhere in the code. */ +#define LEGITIMIZE_RELOAD_ADDRESS(X,MODE,OPNUM,TYPE,IND_LEVELS,WIN) \ + do { \ + if (sh_legitimize_reload_address (&(X), (MODE), (OPNUM), (TYPE))) \ + goto WIN; \ + } while (0) + +/* Specify the machine mode that this machine uses + for the index in the tablejump instruction. */ +#define CASE_VECTOR_MODE ((! optimize || TARGET_BIGTABLE) ? SImode : HImode) + +#define CASE_VECTOR_SHORTEN_MODE(MIN_OFFSET, MAX_OFFSET, BODY) \ +((MIN_OFFSET) >= 0 && (MAX_OFFSET) <= 127 \ + ? (ADDR_DIFF_VEC_FLAGS (BODY).offset_unsigned = 0, QImode) \ + : (MIN_OFFSET) >= 0 && (MAX_OFFSET) <= 255 \ + ? (ADDR_DIFF_VEC_FLAGS (BODY).offset_unsigned = 1, QImode) \ + : (MIN_OFFSET) >= -32768 && (MAX_OFFSET) <= 32767 ? HImode \ + : SImode) + +/* Define as C expression which evaluates to nonzero if the tablejump + instruction expects the table to contain offsets from the address of the + table. + Do not define this if the table should contain absolute addresses. */ +#define CASE_VECTOR_PC_RELATIVE 1 + +/* Define it here, so that it doesn't get bumped to 64-bits on SHmedia. */ +#define FLOAT_TYPE_SIZE 32 + +/* Since the SH2e has only `float' support, it is desirable to make all + floating point types equivalent to `float'. */ +#define DOUBLE_TYPE_SIZE ((TARGET_SH2E && ! TARGET_SH4 && ! TARGET_SH2A_DOUBLE)\ + ? 32 : 64) + +/* 'char' is signed by default. */ +#define DEFAULT_SIGNED_CHAR 1 + +/* The type of size_t unsigned int. */ +#define SIZE_TYPE (TARGET_SH5 ? "long unsigned int" : "unsigned int") + +#undef PTRDIFF_TYPE +#define PTRDIFF_TYPE (TARGET_SH5 ? "long int" : "int") + +#define WCHAR_TYPE "short unsigned int" +#define WCHAR_TYPE_SIZE 16 + +#define SH_ELF_WCHAR_TYPE "long int" + +/* Max number of bytes we can move from memory to memory + in one reasonably fast instruction. */ +#define MOVE_MAX (TARGET_SHMEDIA ? 8 : 4) + +/* Maximum value possibly taken by MOVE_MAX. Must be defined whenever + MOVE_MAX is not a compile-time constant. */ +#define MAX_MOVE_MAX 8 + +/* Max number of bytes we want move_by_pieces to be able to copy + efficiently. */ +#define MOVE_MAX_PIECES (TARGET_SH4 || TARGET_SHMEDIA ? 8 : 4) + +/* Define if operations between registers always perform the operation + on the full register even if a narrower mode is specified. */ +#define WORD_REGISTER_OPERATIONS + +/* Define if loading in MODE, an integral mode narrower than BITS_PER_WORD + will either zero-extend or sign-extend. The value of this macro should + be the code that says which one of the two operations is implicitly + done, UNKNOWN if none. + For SHmedia, we can truncate to QImode easier using zero extension. + FP registers can load SImode values, but don't implicitly sign-extend + them to DImode. */ +#define LOAD_EXTEND_OP(MODE) \ + (((MODE) == QImode && TARGET_SHMEDIA) ? ZERO_EXTEND \ + : (MODE) != SImode ? SIGN_EXTEND : UNKNOWN) + +/* Define if loading short immediate values into registers sign extends. */ +#define SHORT_IMMEDIATES_SIGN_EXTEND + +/* Nonzero if access to memory by bytes is no faster than for words. */ +#define SLOW_BYTE_ACCESS 1 + +/* Nonzero if the target supports dynamic shift instructions + like shad and shld. */ +#define TARGET_DYNSHIFT (TARGET_SH3 || TARGET_SH2A) + +/* The cost of using the dynamic shift insns (shad, shld) are the same + if they are available. If they are not available a library function will + be emitted instead, which is more expensive. */ +#define SH_DYNAMIC_SHIFT_COST (TARGET_DYNSHIFT ? 1 : 20) + +/* Defining SHIFT_COUNT_TRUNCATED tells the combine pass that code like + (X << (Y % 32)) for register X, Y is equivalent to (X << Y). + This is not generally true when hardware dynamic shifts (shad, shld) are + used, because they check the sign bit _before_ the modulo op. The sign + bit determines whether it is a left shift or a right shift: + if (Y < 0) + return X << (Y & 31); + else + return X >> (-Y) & 31); + + The dynamic shift library routines in lib1funcs.S do not use the sign bit + like the hardware dynamic shifts and truncate the shift count to 31. + We define SHIFT_COUNT_TRUNCATED to 0 and express the implied shift count + truncation in the library function call patterns, as this gives slightly + more compact code. */ +#define SHIFT_COUNT_TRUNCATED (0) + +/* All integers have the same format so truncation is easy. */ +/* But SHmedia must sign-extend DImode when truncating to SImode. */ +#define TRULY_NOOP_TRUNCATION(OUTPREC,INPREC) \ + (!TARGET_SHMEDIA || (INPREC) < 64 || (OUTPREC) >= 64) + +/* Define this if addresses of constant functions + shouldn't be put through pseudo regs where they can be cse'd. + Desirable on machines where ordinary constants are expensive + but a CALL with constant address is cheap. */ +/*#define NO_FUNCTION_CSE 1*/ + +/* The machine modes of pointers and functions. */ +#define Pmode (TARGET_SHMEDIA64 ? DImode : SImode) +#define FUNCTION_MODE Pmode + +/* The multiply insn on the SH1 and the divide insns on the SH1 and SH2 + are actually function calls with some special constraints on arguments + and register usage. + + These macros tell reorg that the references to arguments and + register clobbers for insns of type sfunc do not appear to happen + until after the millicode call. This allows reorg to put insns + which set the argument registers into the delay slot of the millicode + call -- thus they act more like traditional CALL_INSNs. + + get_attr_is_sfunc will try to recognize the given insn, so make sure to + filter out things it will not accept -- SEQUENCE, USE and CLOBBER insns + in particular. */ + +#define INSN_SETS_ARE_DELAYED(X) \ + ((NONJUMP_INSN_P (X) \ + && GET_CODE (PATTERN (X)) != SEQUENCE \ + && GET_CODE (PATTERN (X)) != USE \ + && GET_CODE (PATTERN (X)) != CLOBBER \ + && get_attr_is_sfunc (X))) + +#define INSN_REFERENCES_ARE_DELAYED(X) \ + ((NONJUMP_INSN_P (X) \ + && GET_CODE (PATTERN (X)) != SEQUENCE \ + && GET_CODE (PATTERN (X)) != USE \ + && GET_CODE (PATTERN (X)) != CLOBBER \ + && get_attr_is_sfunc (X))) + + +/* Position Independent Code. */ + +/* We can't directly access anything that contains a symbol, + nor can we indirect via the constant pool. */ +#define LEGITIMATE_PIC_OPERAND_P(X) \ + ((! nonpic_symbol_mentioned_p (X) \ + && (GET_CODE (X) != SYMBOL_REF \ + || ! CONSTANT_POOL_ADDRESS_P (X) \ + || ! nonpic_symbol_mentioned_p (get_pool_constant (X)))) \ + || (TARGET_SHMEDIA && GET_CODE (X) == LABEL_REF)) + +#define SYMBOLIC_CONST_P(X) \ +((GET_CODE (X) == SYMBOL_REF || GET_CODE (X) == LABEL_REF) \ + && nonpic_symbol_mentioned_p (X)) + +/* Compute extra cost of moving data between one register class + and another. */ + +/* If SECONDARY*_RELOAD_CLASS says something about the src/dst pair, regclass + uses this information. Hence, the general register <-> floating point + register information here is not used for SFmode. */ +#define REGCLASS_HAS_GENERAL_REG(CLASS) \ + ((CLASS) == GENERAL_REGS || (CLASS) == R0_REGS || (CLASS) == NON_SP_REGS \ + || (! TARGET_SHMEDIA && (CLASS) == SIBCALL_REGS)) + +#define REGCLASS_HAS_FP_REG(CLASS) \ + ((CLASS) == FP0_REGS || (CLASS) == FP_REGS \ + || (CLASS) == DF_REGS) + +/* ??? Perhaps make MEMORY_MOVE_COST depend on compiler option? This + would be so that people with slow memory systems could generate + different code that does fewer memory accesses. */ + +/* A C expression for the cost of a branch instruction. A value of 1 + is the default; other values are interpreted relative to that. */ +#define BRANCH_COST(speed_p, predictable_p) sh_branch_cost + +/* Assembler output control. */ + +/* A C string constant describing how to begin a comment in the target + assembler language. The compiler assumes that the comment will end at + the end of the line. */ +#define ASM_COMMENT_START "!" + +#define ASM_APP_ON "" +#define ASM_APP_OFF "" +#define FILE_ASM_OP "\t.file\n" +#define SET_ASM_OP "\t.set\t" + +/* How to change between sections. */ +#define TEXT_SECTION_ASM_OP (TARGET_SHMEDIA32 \ + ? "\t.section\t.text..SHmedia32,\"ax\"" \ + : "\t.text") +#define DATA_SECTION_ASM_OP "\t.data" + +#if defined CRT_BEGIN || defined CRT_END +/* Arrange for TEXT_SECTION_ASM_OP to be a compile-time constant. */ +# undef TEXT_SECTION_ASM_OP +# if __SHMEDIA__ == 1 && __SH5__ == 32 +# define TEXT_SECTION_ASM_OP "\t.section\t.text..SHmedia32,\"ax\"" +# else +# define TEXT_SECTION_ASM_OP "\t.text" +# endif +#endif + +#ifndef BSS_SECTION_ASM_OP +#define BSS_SECTION_ASM_OP "\t.section\t.bss" +#endif + +#ifndef ASM_OUTPUT_ALIGNED_BSS +#define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \ + asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN) +#endif + +/* Define this so that jump tables go in same section as the current function, + which could be text or it could be a user defined section. */ +#define JUMP_TABLES_IN_TEXT_SECTION 1 + +#undef DO_GLOBAL_CTORS_BODY +#define DO_GLOBAL_CTORS_BODY \ +{ \ + typedef void (*pfunc) (void); \ + extern pfunc __ctors[]; \ + extern pfunc __ctors_end[]; \ + pfunc *p; \ + for (p = __ctors_end; p > __ctors; ) \ + { \ + (*--p)(); \ + } \ +} + +#undef DO_GLOBAL_DTORS_BODY +#define DO_GLOBAL_DTORS_BODY \ +{ \ + typedef void (*pfunc) (void); \ + extern pfunc __dtors[]; \ + extern pfunc __dtors_end[]; \ + pfunc *p; \ + for (p = __dtors; p < __dtors_end; p++) \ + { \ + (*p)(); \ + } \ +} + +#define ASM_OUTPUT_REG_PUSH(file, v) \ +{ \ + if (TARGET_SHMEDIA) \ + { \ + fprintf ((file), "\taddi.l\tr15,-8,r15\n"); \ + fprintf ((file), "\tst.q\tr15,0,r%d\n", (v)); \ + } \ + else \ + fprintf ((file), "\tmov.l\tr%d,@-r15\n", (v)); \ +} + +#define ASM_OUTPUT_REG_POP(file, v) \ +{ \ + if (TARGET_SHMEDIA) \ + { \ + fprintf ((file), "\tld.q\tr15,0,r%d\n", (v)); \ + fprintf ((file), "\taddi.l\tr15,8,r15\n"); \ + } \ + else \ + fprintf ((file), "\tmov.l\t@r15+,r%d\n", (v)); \ +} + +/* DBX register number for a given compiler register number. */ +/* GDB has FPUL at 23 and FP0 at 25, so we must add one to all FP registers + to match gdb. */ +/* expand_builtin_init_dwarf_reg_sizes uses this to test if a + register exists, so we should return -1 for invalid register numbers. */ +#define DBX_REGISTER_NUMBER(REGNO) SH_DBX_REGISTER_NUMBER (REGNO) + +/* SHcompact PR_REG used to use the encoding 241, and SHcompact FP registers + used to use the encodings 245..260, but that doesn't make sense: + PR_REG and PR_MEDIA_REG are actually the same register, and likewise + the FP registers stay the same when switching between compact and media + mode. Hence, we also need to use the same dwarf frame columns. + Likewise, we need to support unwind information for SHmedia registers + even in compact code. */ +#define SH_DBX_REGISTER_NUMBER(REGNO) \ + (IN_RANGE ((REGNO), \ + (unsigned HOST_WIDE_INT) FIRST_GENERAL_REG, \ + FIRST_GENERAL_REG + (TARGET_SH5 ? 63U :15U)) \ + ? ((unsigned) (REGNO) - FIRST_GENERAL_REG) \ + : ((int) (REGNO) >= FIRST_FP_REG \ + && ((int) (REGNO) \ + <= (FIRST_FP_REG + \ + ((TARGET_SH5 && TARGET_FPU_ANY) ? 63 : TARGET_SH2E ? 15 : -1)))) \ + ? ((unsigned) (REGNO) - FIRST_FP_REG \ + + (TARGET_SH5 ? 77 : 25)) \ + : XD_REGISTER_P (REGNO) \ + ? ((unsigned) (REGNO) - FIRST_XD_REG + (TARGET_SH5 ? 289 : 87)) \ + : TARGET_REGISTER_P (REGNO) \ + ? ((unsigned) (REGNO) - FIRST_TARGET_REG + 68) \ + : (REGNO) == PR_REG \ + ? (TARGET_SH5 ? 18 : 17) \ + : (REGNO) == PR_MEDIA_REG \ + ? (TARGET_SH5 ? 18 : (unsigned) -1) \ + : (REGNO) == GBR_REG \ + ? (TARGET_SH5 ? 238 : 18) \ + : (REGNO) == MACH_REG \ + ? (TARGET_SH5 ? 239 : 20) \ + : (REGNO) == MACL_REG \ + ? (TARGET_SH5 ? 240 : 21) \ + : (REGNO) == T_REG \ + ? (TARGET_SH5 ? 242 : 22) \ + : (REGNO) == FPUL_REG \ + ? (TARGET_SH5 ? 244 : 23) \ + : (REGNO) == FPSCR_REG \ + ? (TARGET_SH5 ? 243 : 24) \ + : (unsigned) -1) + +/* This is how to output a reference to a symbol_ref. On SH5, + references to non-code symbols must be preceded by `datalabel'. */ +#define ASM_OUTPUT_SYMBOL_REF(FILE,SYM) \ + do \ + { \ + if (TARGET_SH5 && !SYMBOL_REF_FUNCTION_P (SYM)) \ + fputs ("datalabel ", (FILE)); \ + assemble_name ((FILE), XSTR ((SYM), 0)); \ + } \ + while (0) + +/* This is how to output an assembler line + that says to advance the location counter + to a multiple of 2**LOG bytes. */ + +#define ASM_OUTPUT_ALIGN(FILE,LOG) \ + if ((LOG) != 0) \ + fprintf ((FILE), "\t.align %d\n", (LOG)) + +/* Globalizing directive for a label. */ +#define GLOBAL_ASM_OP "\t.global\t" + +/* #define ASM_OUTPUT_CASE_END(STREAM,NUM,TABLE) */ + +/* Output a relative address table. */ +#define ASM_OUTPUT_ADDR_DIFF_ELT(STREAM,BODY,VALUE,REL) \ + switch (GET_MODE (BODY)) \ + { \ + case SImode: \ + if (TARGET_SH5) \ + { \ + asm_fprintf ((STREAM), "\t.long\t%LL%d-datalabel %LL%d\n", \ + (VALUE), (REL)); \ + break; \ + } \ + asm_fprintf ((STREAM), "\t.long\t%LL%d-%LL%d\n", (VALUE),(REL)); \ + break; \ + case HImode: \ + if (TARGET_SH5) \ + { \ + asm_fprintf ((STREAM), "\t.word\t%LL%d-datalabel %LL%d\n", \ + (VALUE), (REL)); \ + break; \ + } \ + asm_fprintf ((STREAM), "\t.word\t%LL%d-%LL%d\n", (VALUE),(REL)); \ + break; \ + case QImode: \ + if (TARGET_SH5) \ + { \ + asm_fprintf ((STREAM), "\t.byte\t%LL%d-datalabel %LL%d\n", \ + (VALUE), (REL)); \ + break; \ + } \ + asm_fprintf ((STREAM), "\t.byte\t%LL%d-%LL%d\n", (VALUE),(REL)); \ + break; \ + default: \ + break; \ + } + +/* Output an absolute table element. */ +#define ASM_OUTPUT_ADDR_VEC_ELT(STREAM,VALUE) \ + if (! optimize || TARGET_BIGTABLE) \ + asm_fprintf ((STREAM), "\t.long\t%LL%d\n", (VALUE)); \ + else \ + asm_fprintf ((STREAM), "\t.word\t%LL%d\n", (VALUE)); + + +/* A C statement to be executed just prior to the output of + assembler code for INSN, to modify the extracted operands so + they will be output differently. + + Here the argument OPVEC is the vector containing the operands + extracted from INSN, and NOPERANDS is the number of elements of + the vector which contain meaningful data for this insn. + The contents of this vector are what will be used to convert the insn + template into assembler code, so you can change the assembler output + by changing the contents of the vector. */ +#define FINAL_PRESCAN_INSN(INSN, OPVEC, NOPERANDS) \ + final_prescan_insn ((INSN), (OPVEC), (NOPERANDS)) + + +extern rtx sh_compare_op0; +extern rtx sh_compare_op1; + +/* Which processor to schedule for. The elements of the enumeration must + match exactly the cpu attribute in the sh.md file. */ +enum processor_type { + PROCESSOR_SH1, + PROCESSOR_SH2, + PROCESSOR_SH2E, + PROCESSOR_SH2A, + PROCESSOR_SH3, + PROCESSOR_SH3E, + PROCESSOR_SH4, + PROCESSOR_SH4A, + PROCESSOR_SH5 +}; + +#define sh_cpu_attr ((enum attr_cpu)sh_cpu) +extern enum processor_type sh_cpu; + +enum mdep_reorg_phase_e +{ + SH_BEFORE_MDEP_REORG, + SH_INSERT_USES_LABELS, + SH_SHORTEN_BRANCHES0, + SH_FIXUP_PCLOAD, + SH_SHORTEN_BRANCHES1, + SH_AFTER_MDEP_REORG +}; + +extern enum mdep_reorg_phase_e mdep_reorg_phase; + +/* Handle Renesas compiler's pragmas. */ +#define REGISTER_TARGET_PRAGMAS() do { \ + c_register_pragma (0, "interrupt", sh_pr_interrupt); \ + c_register_pragma (0, "trapa", sh_pr_trapa); \ + c_register_pragma (0, "nosave_low_regs", sh_pr_nosave_low_regs); \ +} while (0) + +extern tree sh_deferred_function_attributes; +extern tree *sh_deferred_function_attributes_tail; + +/* Set when processing a function with interrupt attribute. */ +extern int current_function_interrupt; + + +/* Instructions with unfilled delay slots take up an + extra two bytes for the nop in the delay slot. + sh-dsp parallel processing insns are four bytes long. */ +#define ADJUST_INSN_LENGTH(X, LENGTH) \ + (LENGTH) += sh_insn_length_adjustment (X); + +/* Define this macro if it is advisable to hold scalars in registers + in a wider mode than that declared by the program. In such cases, + the value is constrained to be within the bounds of the declared + type, but kept valid in the wider mode. The signedness of the + extension may differ from that of the type. + + Leaving the unsignedp unchanged gives better code than always setting it + to 0. This is despite the fact that we have only signed char and short + load instructions. */ +#define PROMOTE_MODE(MODE, UNSIGNEDP, TYPE) \ + if (GET_MODE_CLASS (MODE) == MODE_INT \ + && GET_MODE_SIZE (MODE) < 4/* ! UNITS_PER_WORD */)\ + (UNSIGNEDP) = ((MODE) == SImode ? 0 : (UNSIGNEDP)), \ + (MODE) = (TARGET_SH1 ? SImode \ + : TARGET_SHMEDIA32 ? SImode : DImode); + +#define MAX_FIXED_MODE_SIZE (TARGET_SH5 ? 128 : 64) + +/* Better to allocate once the maximum space for outgoing args in the + prologue rather than duplicate around each call. */ +#define ACCUMULATE_OUTGOING_ARGS TARGET_ACCUMULATE_OUTGOING_ARGS + +#define NUM_MODES_FOR_MODE_SWITCHING { FP_MODE_NONE } + +#define OPTIMIZE_MODE_SWITCHING(ENTITY) (TARGET_SH4 || TARGET_SH2A_DOUBLE) + +#define ACTUAL_NORMAL_MODE(ENTITY) \ + (TARGET_FPU_SINGLE ? FP_MODE_SINGLE : FP_MODE_DOUBLE) + +#define NORMAL_MODE(ENTITY) \ + (sh_cfun_interrupt_handler_p () \ + ? (TARGET_FMOVD ? FP_MODE_DOUBLE : FP_MODE_NONE) \ + : ACTUAL_NORMAL_MODE (ENTITY)) + +#define MODE_ENTRY(ENTITY) NORMAL_MODE (ENTITY) + +#define MODE_EXIT(ENTITY) \ + (sh_cfun_attr_renesas_p () ? FP_MODE_NONE : NORMAL_MODE (ENTITY)) + +#define EPILOGUE_USES(REGNO) ((TARGET_SH2E || TARGET_SH4) \ + && (REGNO) == FPSCR_REG) + +#define MODE_NEEDED(ENTITY, INSN) \ + (recog_memoized (INSN) >= 0 \ + ? get_attr_fp_mode (INSN) \ + : FP_MODE_NONE) + +#define MODE_AFTER(ENTITY, MODE, INSN) \ + (TARGET_HITACHI \ + && recog_memoized (INSN) >= 0 \ + && get_attr_fp_set (INSN) != FP_SET_NONE \ + ? (int) get_attr_fp_set (INSN) \ + : (MODE)) + +#define MODE_PRIORITY_TO_MODE(ENTITY, N) \ + ((TARGET_FPU_SINGLE != 0) ^ (N) ? FP_MODE_SINGLE : FP_MODE_DOUBLE) + +#define EMIT_MODE_SET(ENTITY, MODE, HARD_REGS_LIVE) \ + fpscr_set_from_mem ((MODE), (HARD_REGS_LIVE)) + +#define MD_CAN_REDIRECT_BRANCH(INSN, SEQ) \ + sh_can_redirect_branch ((INSN), (SEQ)) + +#define DWARF_FRAME_RETURN_COLUMN \ + (TARGET_SH5 ? DWARF_FRAME_REGNUM (PR_MEDIA_REG) : DWARF_FRAME_REGNUM (PR_REG)) + +#define EH_RETURN_DATA_REGNO(N) \ + ((N) < 4 ? (N) + (TARGET_SH5 ? 2U : 4U) : INVALID_REGNUM) + +#define EH_RETURN_STACKADJ_REGNO STATIC_CHAIN_REGNUM +#define EH_RETURN_STACKADJ_RTX gen_rtx_REG (Pmode, EH_RETURN_STACKADJ_REGNO) + +/* We have to distinguish between code and data, so that we apply + datalabel where and only where appropriate. Use sdataN for data. */ +#define ASM_PREFERRED_EH_DATA_FORMAT(CODE, GLOBAL) \ + ((flag_pic && (GLOBAL) ? DW_EH_PE_indirect : 0) \ + | (flag_pic ? DW_EH_PE_pcrel : DW_EH_PE_absptr) \ + | ((CODE) ? 0 : (TARGET_SHMEDIA64 ? DW_EH_PE_sdata8 : DW_EH_PE_sdata4))) + +/* Handle special EH pointer encodings. Absolute, pc-relative, and + indirect are handled automatically. */ +#define ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX(FILE, ENCODING, SIZE, ADDR, DONE) \ + do { \ + if (((ENCODING) & 0xf) != DW_EH_PE_sdata4 \ + && ((ENCODING) & 0xf) != DW_EH_PE_sdata8) \ + { \ + gcc_assert (GET_CODE (ADDR) == SYMBOL_REF); \ + SYMBOL_REF_FLAGS (ADDR) |= SYMBOL_FLAG_FUNCTION; \ + if (0) goto DONE; \ + } \ + } while (0) + +#if (defined CRT_BEGIN || defined CRT_END) && ! __SHMEDIA__ +/* SH constant pool breaks the devices in crtstuff.c to control section + in where code resides. We have to write it as asm code. */ +#define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \ + asm (SECTION_OP "\n\ + mov.l 1f,r1\n\ + mova 2f,r0\n\ + braf r1\n\ + lds r0,pr\n\ +0: .p2align 2\n\ +1: .long " USER_LABEL_PREFIX #FUNC " - 0b\n\ +2:\n" TEXT_SECTION_ASM_OP); +#endif /* (defined CRT_BEGIN || defined CRT_END) && ! __SHMEDIA__ */ + +#endif /* ! GCC_SH_H */ |