| /* Definitions of target machine for GNU compiler. MIPS version. |
| Copyright (C) 1989-2020 Free Software Foundation, Inc. |
| Contributed by A. Lichnewsky (lich@inria.inria.fr). |
| Changed by Michael Meissner (meissner@osf.org). |
| 64-bit r4000 support by Ian Lance Taylor (ian@cygnus.com) and |
| Brendan Eich (brendan@microunity.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/>. */ |
| |
| |
| #include "config/vxworks-dummy.h" |
| |
| #ifdef GENERATOR_FILE |
| /* This is used in some insn conditions, so needs to be declared, but |
| does not need to be defined. */ |
| extern int target_flags_explicit; |
| #endif |
| |
| /* MIPS external variables defined in mips.c. */ |
| |
| /* Which ABI to use. ABI_32 (original 32, or o32), ABI_N32 (n32), |
| ABI_64 (n64) are all defined by SGI. ABI_O64 is o32 extended |
| to work on a 64-bit machine. */ |
| |
| #define ABI_32 0 |
| #define ABI_N32 1 |
| #define ABI_64 2 |
| #define ABI_EABI 3 |
| #define ABI_O64 4 |
| |
| /* Masks that affect tuning. |
| |
| PTF_AVOID_BRANCHLIKELY_SPEED |
| Set if it is usually not profitable to use branch-likely instructions |
| for this target when optimizing code for speed, typically because |
| the branches are always predicted taken and so incur a large overhead |
| when not taken. |
| |
| PTF_AVOID_BRANCHLIKELY_SIZE |
| As above but when optimizing for size. |
| |
| PTF_AVOID_BRANCHLIKELY_ALWAYS |
| As above but regardless of whether we optimize for speed or size. |
| |
| PTF_AVOID_IMADD |
| Set if it is usually not profitable to use the integer MADD or MSUB |
| instructions because of the overhead of getting the result out of |
| the HI/LO registers. */ |
| |
| #define PTF_AVOID_BRANCHLIKELY_SPEED 0x1 |
| #define PTF_AVOID_BRANCHLIKELY_SIZE 0x2 |
| #define PTF_AVOID_BRANCHLIKELY_ALWAYS (PTF_AVOID_BRANCHLIKELY_SPEED | \ |
| PTF_AVOID_BRANCHLIKELY_SIZE) |
| #define PTF_AVOID_IMADD 0x4 |
| |
| /* Information about one recognized processor. Defined here for the |
| benefit of TARGET_CPU_CPP_BUILTINS. */ |
| struct mips_cpu_info { |
| /* The 'canonical' name of the processor as far as GCC is concerned. |
| It's typically a manufacturer's prefix followed by a numerical |
| designation. It should be lowercase. */ |
| const char *name; |
| |
| /* The internal processor number that most closely matches this |
| entry. Several processors can have the same value, if there's no |
| difference between them from GCC's point of view. */ |
| enum processor cpu; |
| |
| /* The ISA level that the processor implements. */ |
| int isa; |
| |
| /* A mask of PTF_* values. */ |
| unsigned int tune_flags; |
| }; |
| |
| #include "config/mips/mips-opts.h" |
| |
| /* Macros to silence warnings about numbers being signed in traditional |
| C and unsigned in ISO C when compiled on 32-bit hosts. */ |
| |
| #define BITMASK_HIGH (((unsigned long)1) << 31) /* 0x80000000 */ |
| #define BITMASK_UPPER16 ((unsigned long)0xffff << 16) /* 0xffff0000 */ |
| #define BITMASK_LOWER16 ((unsigned long)0xffff) /* 0x0000ffff */ |
| |
| |
| /* Run-time compilation parameters selecting different hardware subsets. */ |
| |
| /* True if we are generating position-independent VxWorks RTP code. */ |
| #define TARGET_RTP_PIC (TARGET_VXWORKS_RTP && flag_pic) |
| |
| /* Compact branches must not be used if the user either selects the |
| 'never' policy or the 'optimal' policy on a core that lacks |
| compact branch instructions. */ |
| #define TARGET_CB_NEVER (mips_cb == MIPS_CB_NEVER \ |
| || (mips_cb == MIPS_CB_OPTIMAL \ |
| && !ISA_HAS_COMPACT_BRANCHES)) |
| |
| /* Compact branches may be used if the user either selects the |
| 'always' policy or the 'optimal' policy on a core that supports |
| compact branch instructions. */ |
| #define TARGET_CB_MAYBE (TARGET_CB_ALWAYS \ |
| || (mips_cb == MIPS_CB_OPTIMAL \ |
| && ISA_HAS_COMPACT_BRANCHES)) |
| |
| /* Compact branches must always be generated if the user selects |
| the 'always' policy or the 'optimal' policy om a core that |
| lacks delay slot branch instructions. */ |
| #define TARGET_CB_ALWAYS (mips_cb == MIPS_CB_ALWAYS \ |
| || (mips_cb == MIPS_CB_OPTIMAL \ |
| && !ISA_HAS_DELAY_SLOTS)) |
| |
| /* Special handling for JRC that exists in microMIPSR3 as well as R6 |
| ISAs with full compact branch support. */ |
| #define ISA_HAS_JRC ((ISA_HAS_COMPACT_BRANCHES \ |
| || TARGET_MICROMIPS) \ |
| && mips_cb != MIPS_CB_NEVER) |
| |
| /* True if the output file is marked as ".abicalls; .option pic0" |
| (-call_nonpic). */ |
| #define TARGET_ABICALLS_PIC0 \ |
| (TARGET_ABSOLUTE_ABICALLS && TARGET_PLT) |
| |
| /* True if the output file is marked as ".abicalls; .option pic2" (-KPIC). */ |
| #define TARGET_ABICALLS_PIC2 \ |
| (TARGET_ABICALLS && !TARGET_ABICALLS_PIC0) |
| |
| /* True if the call patterns should be split into a jalr followed by |
| an instruction to restore $gp. It is only safe to split the load |
| from the call when every use of $gp is explicit. |
| |
| See mips_must_initialize_gp_p for details about how we manage the |
| global pointer. */ |
| |
| #define TARGET_SPLIT_CALLS \ |
| (TARGET_EXPLICIT_RELOCS && TARGET_CALL_CLOBBERED_GP && epilogue_completed) |
| |
| /* True if we're generating a form of -mabicalls in which we can use |
| operators like %hi and %lo to refer to locally-binding symbols. |
| We can only do this for -mno-shared, and only then if we can use |
| relocation operations instead of assembly macros. It isn't really |
| worth using absolute sequences for 64-bit symbols because GOT |
| accesses are so much shorter. */ |
| |
| #define TARGET_ABSOLUTE_ABICALLS \ |
| (TARGET_ABICALLS \ |
| && !TARGET_SHARED \ |
| && TARGET_EXPLICIT_RELOCS \ |
| && !ABI_HAS_64BIT_SYMBOLS) |
| |
| /* True if we can optimize sibling calls. For simplicity, we only |
| handle cases in which call_insn_operand will reject invalid |
| sibcall addresses. There are two cases in which this isn't true: |
| |
| - TARGET_MIPS16. call_insn_operand accepts constant addresses |
| but there is no direct jump instruction. It isn't worth |
| using sibling calls in this case anyway; they would usually |
| be longer than normal calls. |
| |
| - TARGET_USE_GOT && !TARGET_EXPLICIT_RELOCS. call_insn_operand |
| accepts global constants, but all sibcalls must be indirect. */ |
| #define TARGET_SIBCALLS \ |
| (!TARGET_MIPS16 && (!TARGET_USE_GOT || TARGET_EXPLICIT_RELOCS)) |
| |
| /* True if we need to use a global offset table to access some symbols. */ |
| #define TARGET_USE_GOT (TARGET_ABICALLS || TARGET_RTP_PIC) |
| |
| /* True if TARGET_USE_GOT and if $gp is a call-clobbered register. */ |
| #define TARGET_CALL_CLOBBERED_GP (TARGET_ABICALLS && TARGET_OLDABI) |
| |
| /* True if TARGET_USE_GOT and if $gp is a call-saved register. */ |
| #define TARGET_CALL_SAVED_GP (TARGET_USE_GOT && !TARGET_CALL_CLOBBERED_GP) |
| |
| /* True if we should use .cprestore to store to the cprestore slot. |
| |
| We continue to use .cprestore for explicit-reloc code so that JALs |
| inside inline asms will work correctly. */ |
| #define TARGET_CPRESTORE_DIRECTIVE \ |
| (TARGET_ABICALLS_PIC2 && !TARGET_MIPS16) |
| |
| /* True if we can use the J and JAL instructions. */ |
| #define TARGET_ABSOLUTE_JUMPS \ |
| (!flag_pic || TARGET_ABSOLUTE_ABICALLS) |
| |
| /* True if indirect calls must use register class PIC_FN_ADDR_REG. |
| This is true for both the PIC and non-PIC VxWorks RTP modes. */ |
| #define TARGET_USE_PIC_FN_ADDR_REG (TARGET_ABICALLS || TARGET_VXWORKS_RTP) |
| |
| /* True if .gpword or .gpdword should be used for switch tables. */ |
| #define TARGET_GPWORD \ |
| (TARGET_ABICALLS && !TARGET_ABSOLUTE_ABICALLS) |
| |
| /* True if the output must have a writable .eh_frame. |
| See ASM_PREFERRED_EH_DATA_FORMAT for details. */ |
| #ifdef HAVE_LD_PERSONALITY_RELAXATION |
| #define TARGET_WRITABLE_EH_FRAME 0 |
| #else |
| #define TARGET_WRITABLE_EH_FRAME (flag_pic && TARGET_SHARED) |
| #endif |
| |
| /* Test the assembler to set ISA_HAS_DSP_MULT to DSP Rev 1 or 2. */ |
| #ifdef HAVE_AS_DSPR1_MULT |
| #define ISA_HAS_DSP_MULT ISA_HAS_DSP |
| #else |
| #define ISA_HAS_DSP_MULT ISA_HAS_DSPR2 |
| #endif |
| |
| /* ISA has LSA available. */ |
| #define ISA_HAS_LSA (mips_isa_rev >= 6 || ISA_HAS_MSA) |
| |
| /* ISA has DLSA available. */ |
| #define ISA_HAS_DLSA (TARGET_64BIT \ |
| && (mips_isa_rev >= 6 \ |
| || ISA_HAS_MSA)) |
| |
| /* The ISA compression flags that are currently in effect. */ |
| #define TARGET_COMPRESSION (target_flags & (MASK_MIPS16 | MASK_MICROMIPS)) |
| |
| /* Generate mips16 code */ |
| #define TARGET_MIPS16 ((target_flags & MASK_MIPS16) != 0) |
| /* Generate mips16e code. Default 16bit ASE for mips32* and mips64* */ |
| #define GENERATE_MIPS16E (TARGET_MIPS16 && mips_isa >= 32) |
| /* Generate mips16e register save/restore sequences. */ |
| #define GENERATE_MIPS16E_SAVE_RESTORE (GENERATE_MIPS16E && mips_abi == ABI_32) |
| |
| /* True if we're generating a form of MIPS16 code in which general |
| text loads are allowed. */ |
| #define TARGET_MIPS16_TEXT_LOADS \ |
| (TARGET_MIPS16 && mips_code_readable == CODE_READABLE_YES) |
| |
| /* True if we're generating a form of MIPS16 code in which PC-relative |
| loads are allowed. */ |
| #define TARGET_MIPS16_PCREL_LOADS \ |
| (TARGET_MIPS16 && mips_code_readable >= CODE_READABLE_PCREL) |
| |
| /* Generic ISA defines. */ |
| #define ISA_MIPS1 (mips_isa == 1) |
| #define ISA_MIPS2 (mips_isa == 2) |
| #define ISA_MIPS3 (mips_isa == 3) |
| #define ISA_MIPS4 (mips_isa == 4) |
| #define ISA_MIPS32 (mips_isa == 32) |
| #define ISA_MIPS32R2 (mips_isa == 33) |
| #define ISA_MIPS32R3 (mips_isa == 34) |
| #define ISA_MIPS32R5 (mips_isa == 36) |
| #define ISA_MIPS32R6 (mips_isa == 37) |
| #define ISA_MIPS64 (mips_isa == 64) |
| #define ISA_MIPS64R2 (mips_isa == 65) |
| #define ISA_MIPS64R3 (mips_isa == 66) |
| #define ISA_MIPS64R5 (mips_isa == 68) |
| #define ISA_MIPS64R6 (mips_isa == 69) |
| |
| /* Architecture target defines. */ |
| #define TARGET_LOONGSON_2E (mips_arch == PROCESSOR_LOONGSON_2E) |
| #define TARGET_LOONGSON_2F (mips_arch == PROCESSOR_LOONGSON_2F) |
| #define TARGET_LOONGSON_2EF (TARGET_LOONGSON_2E || TARGET_LOONGSON_2F) |
| #define TARGET_GS464 (mips_arch == PROCESSOR_GS464) |
| #define TARGET_GS464E (mips_arch == PROCESSOR_GS464E) |
| #define TARGET_GS264E (mips_arch == PROCESSOR_GS264E) |
| #define TARGET_MIPS3900 (mips_arch == PROCESSOR_R3900) |
| #define TARGET_MIPS4000 (mips_arch == PROCESSOR_R4000) |
| #define TARGET_MIPS4120 (mips_arch == PROCESSOR_R4120) |
| #define TARGET_MIPS4130 (mips_arch == PROCESSOR_R4130) |
| #define TARGET_MIPS5400 (mips_arch == PROCESSOR_R5400) |
| #define TARGET_MIPS5500 (mips_arch == PROCESSOR_R5500) |
| #define TARGET_MIPS5900 (mips_arch == PROCESSOR_R5900) |
| #define TARGET_MIPS7000 (mips_arch == PROCESSOR_R7000) |
| #define TARGET_MIPS8000 (mips_arch == PROCESSOR_R8000) |
| #define TARGET_MIPS9000 (mips_arch == PROCESSOR_R9000) |
| #define TARGET_OCTEON (mips_arch == PROCESSOR_OCTEON \ |
| || mips_arch == PROCESSOR_OCTEON2 \ |
| || mips_arch == PROCESSOR_OCTEON3) |
| #define TARGET_OCTEON2 (mips_arch == PROCESSOR_OCTEON2 \ |
| || mips_arch == PROCESSOR_OCTEON3) |
| #define TARGET_SB1 (mips_arch == PROCESSOR_SB1 \ |
| || mips_arch == PROCESSOR_SB1A) |
| #define TARGET_SR71K (mips_arch == PROCESSOR_SR71000) |
| #define TARGET_XLP (mips_arch == PROCESSOR_XLP) |
| |
| /* Scheduling target defines. */ |
| #define TUNE_20KC (mips_tune == PROCESSOR_20KC) |
| #define TUNE_24K (mips_tune == PROCESSOR_24KC \ |
| || mips_tune == PROCESSOR_24KF2_1 \ |
| || mips_tune == PROCESSOR_24KF1_1) |
| #define TUNE_74K (mips_tune == PROCESSOR_74KC \ |
| || mips_tune == PROCESSOR_74KF2_1 \ |
| || mips_tune == PROCESSOR_74KF1_1 \ |
| || mips_tune == PROCESSOR_74KF3_2) |
| #define TUNE_LOONGSON_2EF (mips_tune == PROCESSOR_LOONGSON_2E \ |
| || mips_tune == PROCESSOR_LOONGSON_2F) |
| #define TUNE_GS464 (mips_tune == PROCESSOR_GS464) |
| #define TUNE_GS464E (mips_tune == PROCESSOR_GS464E) |
| #define TUNE_GS264E (mips_tune == PROCESSOR_GS264E) |
| #define TUNE_MIPS3000 (mips_tune == PROCESSOR_R3000) |
| #define TUNE_MIPS3900 (mips_tune == PROCESSOR_R3900) |
| #define TUNE_MIPS4000 (mips_tune == PROCESSOR_R4000) |
| #define TUNE_MIPS4120 (mips_tune == PROCESSOR_R4120) |
| #define TUNE_MIPS4130 (mips_tune == PROCESSOR_R4130) |
| #define TUNE_MIPS5000 (mips_tune == PROCESSOR_R5000) |
| #define TUNE_MIPS5400 (mips_tune == PROCESSOR_R5400) |
| #define TUNE_MIPS5500 (mips_tune == PROCESSOR_R5500) |
| #define TUNE_MIPS6000 (mips_tune == PROCESSOR_R6000) |
| #define TUNE_MIPS7000 (mips_tune == PROCESSOR_R7000) |
| #define TUNE_MIPS9000 (mips_tune == PROCESSOR_R9000) |
| #define TUNE_OCTEON (mips_tune == PROCESSOR_OCTEON \ |
| || mips_tune == PROCESSOR_OCTEON2 \ |
| || mips_tune == PROCESSOR_OCTEON3) |
| #define TUNE_SB1 (mips_tune == PROCESSOR_SB1 \ |
| || mips_tune == PROCESSOR_SB1A) |
| #define TUNE_P5600 (mips_tune == PROCESSOR_P5600) |
| #define TUNE_I6400 (mips_tune == PROCESSOR_I6400) |
| #define TUNE_P6600 (mips_tune == PROCESSOR_P6600) |
| |
| /* True if the pre-reload scheduler should try to create chains of |
| multiply-add or multiply-subtract instructions. For example, |
| suppose we have: |
| |
| t1 = a * b |
| t2 = t1 + c * d |
| t3 = e * f |
| t4 = t3 - g * h |
| |
| t1 will have a higher priority than t2 and t3 will have a higher |
| priority than t4. However, before reload, there is no dependence |
| between t1 and t3, and they can often have similar priorities. |
| The scheduler will then tend to prefer: |
| |
| t1 = a * b |
| t3 = e * f |
| t2 = t1 + c * d |
| t4 = t3 - g * h |
| |
| which stops us from making full use of macc/madd-style instructions. |
| This sort of situation occurs frequently in Fourier transforms and |
| in unrolled loops. |
| |
| To counter this, the TUNE_MACC_CHAINS code will reorder the ready |
| queue so that chained multiply-add and multiply-subtract instructions |
| appear ahead of any other instruction that is likely to clobber lo. |
| In the example above, if t2 and t3 become ready at the same time, |
| the code ensures that t2 is scheduled first. |
| |
| Multiply-accumulate instructions are a bigger win for some targets |
| than others, so this macro is defined on an opt-in basis. */ |
| #define TUNE_MACC_CHAINS (TUNE_MIPS5500 \ |
| || TUNE_MIPS4120 \ |
| || TUNE_MIPS4130 \ |
| || TUNE_24K \ |
| || TUNE_P5600) |
| |
| #define TARGET_OLDABI (mips_abi == ABI_32 || mips_abi == ABI_O64) |
| #define TARGET_NEWABI (mips_abi == ABI_N32 || mips_abi == ABI_64) |
| |
| /* TARGET_HARD_FLOAT and TARGET_SOFT_FLOAT reflect whether the FPU is |
| directly accessible, while the command-line options select |
| TARGET_HARD_FLOAT_ABI and TARGET_SOFT_FLOAT_ABI to reflect the ABI |
| in use. */ |
| #define TARGET_HARD_FLOAT (TARGET_HARD_FLOAT_ABI && !TARGET_MIPS16) |
| #define TARGET_SOFT_FLOAT (TARGET_SOFT_FLOAT_ABI || TARGET_MIPS16) |
| |
| /* TARGET_FLOAT64 represents -mfp64 and TARGET_FLOATXX represents |
| -mfpxx, derive TARGET_FLOAT32 to represent -mfp32. */ |
| #define TARGET_FLOAT32 (!TARGET_FLOAT64 && !TARGET_FLOATXX) |
| |
| /* TARGET_O32_FP64A_ABI represents all the conditions that form the |
| o32 FP64A ABI extension (-mabi=32 -mfp64 -mno-odd-spreg). */ |
| #define TARGET_O32_FP64A_ABI (mips_abi == ABI_32 && TARGET_FLOAT64 \ |
| && !TARGET_ODD_SPREG) |
| |
| /* False if SC acts as a memory barrier with respect to itself, |
| otherwise a SYNC will be emitted after SC for atomic operations |
| that require ordering between the SC and following loads and |
| stores. It does not tell anything about ordering of loads and |
| stores prior to and following the SC, only about the SC itself and |
| those loads and stores follow it. */ |
| #define TARGET_SYNC_AFTER_SC (!TARGET_OCTEON && !TARGET_XLP) |
| |
| /* Define preprocessor macros for the -march and -mtune options. |
| PREFIX is either _MIPS_ARCH or _MIPS_TUNE, INFO is the selected |
| processor. If INFO's canonical name is "foo", define PREFIX to |
| be "foo", and define an additional macro PREFIX_FOO. */ |
| #define MIPS_CPP_SET_PROCESSOR(PREFIX, INFO) \ |
| do \ |
| { \ |
| char *macro, *p; \ |
| \ |
| macro = concat ((PREFIX), "_", (INFO)->name, NULL); \ |
| for (p = macro; *p != 0; p++) \ |
| if (*p == '+') \ |
| *p = 'P'; \ |
| else \ |
| *p = TOUPPER (*p); \ |
| \ |
| builtin_define (macro); \ |
| builtin_define_with_value ((PREFIX), (INFO)->name, 1); \ |
| free (macro); \ |
| } \ |
| while (0) |
| |
| /* Target CPU builtins. */ |
| #define TARGET_CPU_CPP_BUILTINS() \ |
| do \ |
| { \ |
| builtin_assert ("machine=mips"); \ |
| builtin_assert ("cpu=mips"); \ |
| builtin_define ("__mips__"); \ |
| builtin_define ("_mips"); \ |
| \ |
| /* We do this here because __mips is defined below and so we \ |
| can't use builtin_define_std. We don't ever want to define \ |
| "mips" for VxWorks because some of the VxWorks headers \ |
| construct include filenames from a root directory macro, \ |
| an architecture macro and a filename, where the architecture \ |
| macro expands to 'mips'. If we define 'mips' to 1, the \ |
| architecture macro expands to 1 as well. */ \ |
| if (!flag_iso && !TARGET_VXWORKS) \ |
| builtin_define ("mips"); \ |
| \ |
| if (TARGET_64BIT) \ |
| builtin_define ("__mips64"); \ |
| \ |
| /* Treat _R3000 and _R4000 like register-size \ |
| defines, which is how they've historically \ |
| been used. */ \ |
| if (TARGET_64BIT) \ |
| { \ |
| builtin_define_std ("R4000"); \ |
| builtin_define ("_R4000"); \ |
| } \ |
| else \ |
| { \ |
| builtin_define_std ("R3000"); \ |
| builtin_define ("_R3000"); \ |
| } \ |
| \ |
| if (TARGET_FLOAT64) \ |
| builtin_define ("__mips_fpr=64"); \ |
| else if (TARGET_FLOATXX) \ |
| builtin_define ("__mips_fpr=0"); \ |
| else \ |
| builtin_define ("__mips_fpr=32"); \ |
| \ |
| if (mips_base_compression_flags & MASK_MIPS16) \ |
| builtin_define ("__mips16"); \ |
| \ |
| if (TARGET_MIPS3D) \ |
| builtin_define ("__mips3d"); \ |
| \ |
| if (TARGET_SMARTMIPS) \ |
| builtin_define ("__mips_smartmips"); \ |
| \ |
| if (mips_base_compression_flags & MASK_MICROMIPS) \ |
| builtin_define ("__mips_micromips"); \ |
| \ |
| if (TARGET_MCU) \ |
| builtin_define ("__mips_mcu"); \ |
| \ |
| if (TARGET_EVA) \ |
| builtin_define ("__mips_eva"); \ |
| \ |
| if (TARGET_DSP) \ |
| { \ |
| builtin_define ("__mips_dsp"); \ |
| if (TARGET_DSPR2) \ |
| { \ |
| builtin_define ("__mips_dspr2"); \ |
| builtin_define ("__mips_dsp_rev=2"); \ |
| } \ |
| else \ |
| builtin_define ("__mips_dsp_rev=1"); \ |
| } \ |
| \ |
| if (ISA_HAS_MSA) \ |
| { \ |
| builtin_define ("__mips_msa"); \ |
| builtin_define ("__mips_msa_width=128"); \ |
| } \ |
| \ |
| MIPS_CPP_SET_PROCESSOR ("_MIPS_ARCH", mips_arch_info); \ |
| MIPS_CPP_SET_PROCESSOR ("_MIPS_TUNE", mips_tune_info); \ |
| \ |
| if (ISA_MIPS1) \ |
| { \ |
| builtin_define ("__mips=1"); \ |
| builtin_define ("_MIPS_ISA=_MIPS_ISA_MIPS1"); \ |
| } \ |
| else if (ISA_MIPS2) \ |
| { \ |
| builtin_define ("__mips=2"); \ |
| builtin_define ("_MIPS_ISA=_MIPS_ISA_MIPS2"); \ |
| } \ |
| else if (ISA_MIPS3) \ |
| { \ |
| builtin_define ("__mips=3"); \ |
| builtin_define ("_MIPS_ISA=_MIPS_ISA_MIPS3"); \ |
| } \ |
| else if (ISA_MIPS4) \ |
| { \ |
| builtin_define ("__mips=4"); \ |
| builtin_define ("_MIPS_ISA=_MIPS_ISA_MIPS4"); \ |
| } \ |
| else if (mips_isa >= 32 && mips_isa < 64) \ |
| { \ |
| builtin_define ("__mips=32"); \ |
| builtin_define ("_MIPS_ISA=_MIPS_ISA_MIPS32"); \ |
| } \ |
| else if (mips_isa >= 64) \ |
| { \ |
| builtin_define ("__mips=64"); \ |
| builtin_define ("_MIPS_ISA=_MIPS_ISA_MIPS64"); \ |
| } \ |
| if (mips_isa_rev > 0) \ |
| builtin_define_with_int_value ("__mips_isa_rev", \ |
| mips_isa_rev); \ |
| \ |
| switch (mips_abi) \ |
| { \ |
| case ABI_32: \ |
| builtin_define ("_ABIO32=1"); \ |
| builtin_define ("_MIPS_SIM=_ABIO32"); \ |
| break; \ |
| \ |
| case ABI_N32: \ |
| builtin_define ("_ABIN32=2"); \ |
| builtin_define ("_MIPS_SIM=_ABIN32"); \ |
| break; \ |
| \ |
| case ABI_64: \ |
| builtin_define ("_ABI64=3"); \ |
| builtin_define ("_MIPS_SIM=_ABI64"); \ |
| break; \ |
| \ |
| case ABI_O64: \ |
| builtin_define ("_ABIO64=4"); \ |
| builtin_define ("_MIPS_SIM=_ABIO64"); \ |
| break; \ |
| } \ |
| \ |
| builtin_define_with_int_value ("_MIPS_SZINT", INT_TYPE_SIZE); \ |
| builtin_define_with_int_value ("_MIPS_SZLONG", LONG_TYPE_SIZE); \ |
| builtin_define_with_int_value ("_MIPS_SZPTR", POINTER_SIZE); \ |
| builtin_define_with_int_value ("_MIPS_FPSET", \ |
| 32 / MAX_FPRS_PER_FMT); \ |
| builtin_define_with_int_value ("_MIPS_SPFPSET", \ |
| TARGET_ODD_SPREG ? 32 : 16); \ |
| \ |
| /* These defines reflect the ABI in use, not whether the \ |
| FPU is directly accessible. */ \ |
| if (TARGET_NO_FLOAT) \ |
| builtin_define ("__mips_no_float"); \ |
| else if (TARGET_HARD_FLOAT_ABI) \ |
| builtin_define ("__mips_hard_float"); \ |
| else \ |
| builtin_define ("__mips_soft_float"); \ |
| \ |
| if (TARGET_SINGLE_FLOAT) \ |
| builtin_define ("__mips_single_float"); \ |
| \ |
| if (TARGET_PAIRED_SINGLE_FLOAT) \ |
| builtin_define ("__mips_paired_single_float"); \ |
| \ |
| if (mips_abs == MIPS_IEEE_754_2008) \ |
| builtin_define ("__mips_abs2008"); \ |
| \ |
| if (mips_nan == MIPS_IEEE_754_2008) \ |
| builtin_define ("__mips_nan2008"); \ |
| \ |
| if (TARGET_BIG_ENDIAN) \ |
| { \ |
| builtin_define_std ("MIPSEB"); \ |
| builtin_define ("_MIPSEB"); \ |
| } \ |
| else \ |
| { \ |
| builtin_define_std ("MIPSEL"); \ |
| builtin_define ("_MIPSEL"); \ |
| } \ |
| \ |
| /* Whether calls should go through $25. The separate __PIC__ \ |
| macro indicates whether abicalls code might use a GOT. */ \ |
| if (TARGET_ABICALLS) \ |
| builtin_define ("__mips_abicalls"); \ |
| \ |
| /* Whether Loongson vector modes are enabled. */ \ |
| if (TARGET_LOONGSON_MMI) \ |
| { \ |
| builtin_define ("__mips_loongson_vector_rev"); \ |
| builtin_define ("__mips_loongson_mmi"); \ |
| } \ |
| \ |
| /* Whether Loongson EXT modes are enabled. */ \ |
| if (TARGET_LOONGSON_EXT) \ |
| { \ |
| builtin_define ("__mips_loongson_ext"); \ |
| if (TARGET_LOONGSON_EXT2) \ |
| { \ |
| builtin_define ("__mips_loongson_ext2"); \ |
| builtin_define ("__mips_loongson_ext_rev=2"); \ |
| } \ |
| else \ |
| builtin_define ("__mips_loongson_ext_rev=1"); \ |
| } \ |
| \ |
| /* Historical Octeon macro. */ \ |
| if (TARGET_OCTEON) \ |
| builtin_define ("__OCTEON__"); \ |
| \ |
| if (TARGET_SYNCI) \ |
| builtin_define ("__mips_synci"); \ |
| \ |
| /* Macros dependent on the C dialect. */ \ |
| if (preprocessing_asm_p ()) \ |
| { \ |
| builtin_define_std ("LANGUAGE_ASSEMBLY"); \ |
| builtin_define ("_LANGUAGE_ASSEMBLY"); \ |
| } \ |
| else if (c_dialect_cxx ()) \ |
| { \ |
| builtin_define ("_LANGUAGE_C_PLUS_PLUS"); \ |
| builtin_define ("__LANGUAGE_C_PLUS_PLUS"); \ |
| builtin_define ("__LANGUAGE_C_PLUS_PLUS__"); \ |
| } \ |
| else \ |
| { \ |
| builtin_define_std ("LANGUAGE_C"); \ |
| builtin_define ("_LANGUAGE_C"); \ |
| } \ |
| if (c_dialect_objc ()) \ |
| { \ |
| builtin_define ("_LANGUAGE_OBJECTIVE_C"); \ |
| builtin_define ("__LANGUAGE_OBJECTIVE_C"); \ |
| /* Bizarre, but retained for backwards compatibility. */ \ |
| builtin_define_std ("LANGUAGE_C"); \ |
| builtin_define ("_LANGUAGE_C"); \ |
| } \ |
| \ |
| if (mips_abi == ABI_EABI) \ |
| builtin_define ("__mips_eabi"); \ |
| \ |
| if (TARGET_CACHE_BUILTIN) \ |
| builtin_define ("__GCC_HAVE_BUILTIN_MIPS_CACHE"); \ |
| if (!ISA_HAS_LXC1_SXC1) \ |
| builtin_define ("__mips_no_lxc1_sxc1"); \ |
| if (!ISA_HAS_UNFUSED_MADD4 && !ISA_HAS_FUSED_MADD4) \ |
| builtin_define ("__mips_no_madd4"); \ |
| } \ |
| while (0) |
| |
| /* Target CPU versions for D. */ |
| #define TARGET_D_CPU_VERSIONS mips_d_target_versions |
| |
| /* Default target_flags if no switches are specified */ |
| |
| #ifndef TARGET_DEFAULT |
| #define TARGET_DEFAULT 0 |
| #endif |
| |
| #ifndef TARGET_CPU_DEFAULT |
| #define TARGET_CPU_DEFAULT 0 |
| #endif |
| |
| #ifndef TARGET_ENDIAN_DEFAULT |
| #define TARGET_ENDIAN_DEFAULT MASK_BIG_ENDIAN |
| #endif |
| |
| #ifdef IN_LIBGCC2 |
| #undef TARGET_64BIT |
| /* Make this compile time constant for libgcc2 */ |
| #ifdef __mips64 |
| #define TARGET_64BIT 1 |
| #else |
| #define TARGET_64BIT 0 |
| #endif |
| #endif /* IN_LIBGCC2 */ |
| |
| /* Force the call stack unwinders in unwind.inc not to be MIPS16 code |
| when compiled with hardware floating point. This is because MIPS16 |
| code cannot save and restore the floating-point registers, which is |
| important if in a mixed MIPS16/non-MIPS16 environment. */ |
| |
| #ifdef IN_LIBGCC2 |
| #if __mips_hard_float |
| #define LIBGCC2_UNWIND_ATTRIBUTE __attribute__((__nomips16__)) |
| #endif |
| #endif /* IN_LIBGCC2 */ |
| |
| #define TARGET_LIBGCC_SDATA_SECTION ".sdata" |
| |
| #ifndef MULTILIB_ENDIAN_DEFAULT |
| #if TARGET_ENDIAN_DEFAULT == 0 |
| #define MULTILIB_ENDIAN_DEFAULT "EL" |
| #else |
| #define MULTILIB_ENDIAN_DEFAULT "EB" |
| #endif |
| #endif |
| |
| #ifndef MULTILIB_ISA_DEFAULT |
| #if MIPS_ISA_DEFAULT == 1 |
| #define MULTILIB_ISA_DEFAULT "mips1" |
| #elif MIPS_ISA_DEFAULT == 2 |
| #define MULTILIB_ISA_DEFAULT "mips2" |
| #elif MIPS_ISA_DEFAULT == 3 |
| #define MULTILIB_ISA_DEFAULT "mips3" |
| #elif MIPS_ISA_DEFAULT == 4 |
| #define MULTILIB_ISA_DEFAULT "mips4" |
| #elif MIPS_ISA_DEFAULT == 32 |
| #define MULTILIB_ISA_DEFAULT "mips32" |
| #elif MIPS_ISA_DEFAULT == 33 |
| #define MULTILIB_ISA_DEFAULT "mips32r2" |
| #elif MIPS_ISA_DEFAULT == 37 |
| #define MULTILIB_ISA_DEFAULT "mips32r6" |
| #elif MIPS_ISA_DEFAULT == 64 |
| #define MULTILIB_ISA_DEFAULT "mips64" |
| #elif MIPS_ISA_DEFAULT == 65 |
| #define MULTILIB_ISA_DEFAULT "mips64r2" |
| #elif MIPS_ISA_DEFAULT == 69 |
| #define MULTILIB_ISA_DEFAULT "mips64r6" |
| #else |
| #define MULTILIB_ISA_DEFAULT "mips1" |
| #endif |
| #endif |
| |
| #ifndef MIPS_ABI_DEFAULT |
| #define MIPS_ABI_DEFAULT ABI_32 |
| #endif |
| |
| /* Use the most portable ABI flag for the ASM specs. */ |
| |
| #if MIPS_ABI_DEFAULT == ABI_32 |
| #define MULTILIB_ABI_DEFAULT "mabi=32" |
| #elif MIPS_ABI_DEFAULT == ABI_O64 |
| #define MULTILIB_ABI_DEFAULT "mabi=o64" |
| #elif MIPS_ABI_DEFAULT == ABI_N32 |
| #define MULTILIB_ABI_DEFAULT "mabi=n32" |
| #elif MIPS_ABI_DEFAULT == ABI_64 |
| #define MULTILIB_ABI_DEFAULT "mabi=64" |
| #elif MIPS_ABI_DEFAULT == ABI_EABI |
| #define MULTILIB_ABI_DEFAULT "mabi=eabi" |
| #endif |
| |
| #ifndef MULTILIB_DEFAULTS |
| #define MULTILIB_DEFAULTS \ |
| { MULTILIB_ENDIAN_DEFAULT, MULTILIB_ISA_DEFAULT, MULTILIB_ABI_DEFAULT } |
| #endif |
| |
| /* We must pass -EL to the linker by default for little endian embedded |
| targets using linker scripts with a OUTPUT_FORMAT line. Otherwise, the |
| linker will default to using big-endian output files. The OUTPUT_FORMAT |
| line must be in the linker script, otherwise -EB/-EL will not work. */ |
| |
| #ifndef ENDIAN_SPEC |
| #if TARGET_ENDIAN_DEFAULT == 0 |
| #define ENDIAN_SPEC "%{!EB:%{!meb:-EL}} %{EB|meb:-EB}" |
| #else |
| #define ENDIAN_SPEC "%{!EL:%{!mel:-EB}} %{EL|mel:-EL}" |
| #endif |
| #endif |
| |
| /* A spec condition that matches all non-mips16 -mips arguments. */ |
| |
| #define MIPS_ISA_LEVEL_OPTION_SPEC \ |
| "mips1|mips2|mips3|mips4|mips32*|mips64*" |
| |
| /* A spec condition that matches all non-mips16 architecture arguments. */ |
| |
| #define MIPS_ARCH_OPTION_SPEC \ |
| MIPS_ISA_LEVEL_OPTION_SPEC "|march=*" |
| |
| /* A spec that infers a -mips argument from an -march argument. */ |
| |
| #define MIPS_ISA_LEVEL_SPEC \ |
| "%{" MIPS_ISA_LEVEL_OPTION_SPEC ":;: \ |
| %{march=mips1|march=r2000|march=r3000|march=r3900:-mips1} \ |
| %{march=mips2|march=r6000:-mips2} \ |
| %{march=mips3|march=r4*|march=vr4*|march=orion|march=loongson2*:-mips3} \ |
| %{march=mips4|march=r8000|march=vr5*|march=rm7000|march=rm9000 \ |
| |march=r10000|march=r12000|march=r14000|march=r16000:-mips4} \ |
| %{march=mips32|march=4kc|march=4km|march=4kp|march=4ksc:-mips32} \ |
| %{march=mips32r2|march=m4k|march=4ke*|march=4ksd|march=24k* \ |
| |march=34k*|march=74k*|march=m14k*|march=1004k* \ |
| |march=interaptiv: -mips32r2} \ |
| %{march=mips32r3: -mips32r3} \ |
| %{march=mips32r5|march=p5600|march=m5100|march=m5101: -mips32r5} \ |
| %{march=mips32r6: -mips32r6} \ |
| %{march=mips64|march=5k*|march=20k*|march=sb1*|march=sr71000 \ |
| |march=xlr: -mips64} \ |
| %{march=mips64r2|march=loongson3a|march=gs464|march=gs464e|march=gs264e \ |
| |march=octeon|march=xlp: -mips64r2} \ |
| %{march=mips64r3: -mips64r3} \ |
| %{march=mips64r5: -mips64r5} \ |
| %{march=mips64r6|march=i6400|march=i6500|march=p6600: -mips64r6}}" |
| |
| /* A spec that injects the default multilib ISA if no architecture is |
| specified. */ |
| |
| #define MIPS_DEFAULT_ISA_LEVEL_SPEC \ |
| "%{" MIPS_ISA_LEVEL_OPTION_SPEC ":;: \ |
| %{!march=*: -" MULTILIB_ISA_DEFAULT "}}" |
| |
| /* A spec that infers a -mhard-float or -msoft-float setting from an |
| -march argument. Note that soft-float and hard-float code are not |
| link-compatible. */ |
| |
| #define MIPS_ARCH_FLOAT_SPEC \ |
| "%{mhard-float|msoft-float|mno-float|march=mips*:; \ |
| march=vr41*|march=m4k|march=4k*|march=24kc|march=24kec \ |
| |march=34kc|march=34kn|march=74kc|march=1004kc|march=5kc \ |
| |march=m14k*|march=m5101|march=octeon|march=xlr: -msoft-float; \ |
| march=*: -mhard-float}" |
| |
| /* A spec condition that matches 32-bit options. It only works if |
| MIPS_ISA_LEVEL_SPEC has been applied. */ |
| |
| #define MIPS_32BIT_OPTION_SPEC \ |
| "mips1|mips2|mips32*|mgp32" |
| |
| /* A spec condition that matches architectures should be targeted with |
| o32 FPXX for compatibility reasons. */ |
| #define MIPS_FPXX_OPTION_SPEC \ |
| "mips2|mips3|mips4|mips5|mips32|mips32r2|mips32r3|mips32r5| \ |
| mips64|mips64r2|mips64r3|mips64r5" |
| |
| /* Infer a -msynci setting from a -mips argument, on the assumption that |
| -msynci is desired where possible. */ |
| #define MIPS_ISA_SYNCI_SPEC \ |
| "%{msynci|mno-synci:;:%{mips32r2|mips32r3|mips32r5|mips32r6|mips64r2 \ |
| |mips64r3|mips64r5|mips64r6:-msynci;:-mno-synci}}" |
| |
| /* Infer a -mnan=2008 setting from a -mips argument. */ |
| #define MIPS_ISA_NAN2008_SPEC \ |
| "%{mnan*:;mips32r6|mips64r6:-mnan=2008;march=m51*: \ |
| %{!msoft-float:-mnan=2008}}" |
| |
| #if (MIPS_ABI_DEFAULT == ABI_O64 \ |
| || MIPS_ABI_DEFAULT == ABI_N32 \ |
| || MIPS_ABI_DEFAULT == ABI_64) |
| #define OPT_ARCH64 "mabi=32|mgp32:;" |
| #define OPT_ARCH32 "mabi=32|mgp32" |
| #else |
| #define OPT_ARCH64 "mabi=o64|mabi=n32|mabi=64|mgp64" |
| #define OPT_ARCH32 "mabi=o64|mabi=n32|mabi=64|mgp64:;" |
| #endif |
| |
| /* Support for a compile-time default CPU, et cetera. The rules are: |
| --with-arch is ignored if -march is specified or a -mips is specified |
| (other than -mips16); likewise --with-arch-32 and --with-arch-64. |
| --with-tune is ignored if -mtune is specified; likewise |
| --with-tune-32 and --with-tune-64. |
| --with-abi is ignored if -mabi is specified. |
| --with-float is ignored if -mhard-float or -msoft-float are |
| specified. |
| --with-fpu is ignored if -msoft-float, -msingle-float or -mdouble-float are |
| specified. |
| --with-nan is ignored if -mnan is specified. |
| --with-fp-32 is ignored if -msoft-float, -msingle-float, -mmsa or -mfp are |
| specified. |
| --with-odd-spreg-32 is ignored if -msoft-float, -msingle-float, -modd-spreg |
| or -mno-odd-spreg are specified. |
| --with-divide is ignored if -mdivide-traps or -mdivide-breaks are |
| specified. */ |
| #define OPTION_DEFAULT_SPECS \ |
| {"arch", "%{" MIPS_ARCH_OPTION_SPEC ":;: -march=%(VALUE)}" }, \ |
| {"arch_32", "%{" OPT_ARCH32 ":%{" MIPS_ARCH_OPTION_SPEC ":;: -march=%(VALUE)}}" }, \ |
| {"arch_64", "%{" OPT_ARCH64 ":%{" MIPS_ARCH_OPTION_SPEC ":;: -march=%(VALUE)}}" }, \ |
| {"tune", "%{!mtune=*:-mtune=%(VALUE)}" }, \ |
| {"tune_32", "%{" OPT_ARCH32 ":%{!mtune=*:-mtune=%(VALUE)}}" }, \ |
| {"tune_64", "%{" OPT_ARCH64 ":%{!mtune=*:-mtune=%(VALUE)}}" }, \ |
| {"abi", "%{!mabi=*:-mabi=%(VALUE)}" }, \ |
| {"float", "%{!msoft-float:%{!mhard-float:-m%(VALUE)-float}}" }, \ |
| {"fpu", "%{!msoft-float:%{!msingle-float:%{!mdouble-float:-m%(VALUE)-float}}}" }, \ |
| {"nan", "%{!mnan=*:-mnan=%(VALUE)}" }, \ |
| {"fp_32", "%{" OPT_ARCH32 \ |
| ":%{!msoft-float:%{!msingle-float:%{!mfp*:%{!mmsa:-mfp%(VALUE)}}}}}" }, \ |
| {"odd_spreg_32", "%{" OPT_ARCH32 ":%{!msoft-float:%{!msingle-float:" \ |
| "%{!modd-spreg:%{!mno-odd-spreg:-m%(VALUE)}}}}}" }, \ |
| {"divide", "%{!mdivide-traps:%{!mdivide-breaks:-mdivide-%(VALUE)}}" }, \ |
| {"llsc", "%{!mllsc:%{!mno-llsc:-m%(VALUE)}}" }, \ |
| {"mips-plt", "%{!mplt:%{!mno-plt:-m%(VALUE)}}" }, \ |
| {"synci", "%{!msynci:%{!mno-synci:-m%(VALUE)}}" }, \ |
| {"lxc1-sxc1", "%{!mlxc1-sxc1:%{!mno-lxc1-sxc1:-m%(VALUE)}}" }, \ |
| {"madd4", "%{!mmadd4:%{!mno-madd4:-m%(VALUE)}}" } \ |
| |
| /* A spec that infers the: |
| -mnan=2008 setting from a -mips argument, |
| -mdsp setting from a -march argument. |
| -mloongson-mmi setting from a -march argument. */ |
| #define BASE_DRIVER_SELF_SPECS \ |
| MIPS_ISA_NAN2008_SPEC, \ |
| MIPS_ASE_DSP_SPEC, \ |
| MIPS_ASE_LOONGSON_MMI_SPEC, \ |
| MIPS_ASE_LOONGSON_EXT_SPEC, \ |
| MIPS_ASE_MSA_SPEC |
| |
| |
| #define MIPS_ASE_DSP_SPEC \ |
| "%{!mno-dsp: \ |
| %{march=24ke*|march=34kc*|march=34kf*|march=34kx*|march=1004k* \ |
| |march=interaptiv: -mdsp} \ |
| %{march=74k*|march=m14ke*: %{!mno-dspr2: -mdspr2 -mdsp}}}" |
| |
| #define MIPS_ASE_LOONGSON_MMI_SPEC \ |
| "%{!mno-loongson-mmi: \ |
| %{march=loongson2e|march=loongson2f|march=loongson3a: -mloongson-mmi}}" |
| |
| #define MIPS_ASE_LOONGSON_EXT_SPEC \ |
| "%{!mno-loongson-ext: \ |
| %{march=loongson3a|march=gs464: -mloongson-ext} \ |
| %{march=gs464e|march=gs264e: %{!mno-loongson-ext2: \ |
| -mloongson-ext2 -mloongson-ext}}}" |
| |
| #define MIPS_ASE_MSA_SPEC \ |
| "%{!mno-msa: \ |
| %{march=gs264e: -mmsa}}" |
| |
| #define DRIVER_SELF_SPECS \ |
| MIPS_ISA_LEVEL_SPEC, \ |
| BASE_DRIVER_SELF_SPECS |
| |
| #define GENERATE_DIVIDE_TRAPS (TARGET_DIVIDE_TRAPS \ |
| && ISA_HAS_COND_TRAP) |
| |
| #define GENERATE_BRANCHLIKELY (TARGET_BRANCHLIKELY && !TARGET_MIPS16) |
| |
| /* True if the ABI can only work with 64-bit integer registers. We |
| generally allow ad-hoc variations for TARGET_SINGLE_FLOAT, but |
| otherwise floating-point registers must also be 64-bit. */ |
| #define ABI_NEEDS_64BIT_REGS (TARGET_NEWABI || mips_abi == ABI_O64) |
| |
| /* Likewise for 32-bit regs. */ |
| #define ABI_NEEDS_32BIT_REGS (mips_abi == ABI_32) |
| |
| /* True if the file format uses 64-bit symbols. At present, this is |
| only true for n64, which uses 64-bit ELF. */ |
| #define FILE_HAS_64BIT_SYMBOLS (mips_abi == ABI_64) |
| |
| /* True if symbols are 64 bits wide. This is usually determined by |
| the ABI's file format, but it can be overridden by -msym32. Note that |
| overriding the size with -msym32 changes the ABI of relocatable objects, |
| although it doesn't change the ABI of a fully-linked object. */ |
| #define ABI_HAS_64BIT_SYMBOLS (FILE_HAS_64BIT_SYMBOLS \ |
| && Pmode == DImode \ |
| && !TARGET_SYM32) |
| |
| /* ISA has instructions for managing 64-bit fp and gp regs (e.g. mips3). */ |
| #define ISA_HAS_64BIT_REGS (ISA_MIPS3 \ |
| || ISA_MIPS4 \ |
| || ISA_MIPS64 \ |
| || ISA_MIPS64R2 \ |
| || ISA_MIPS64R3 \ |
| || ISA_MIPS64R5 \ |
| || ISA_MIPS64R6) |
| |
| #define ISA_HAS_JR (mips_isa_rev <= 5) |
| |
| #define ISA_HAS_DELAY_SLOTS 1 |
| |
| #define ISA_HAS_COMPACT_BRANCHES (mips_isa_rev >= 6) |
| |
| /* ISA has branch likely instructions (e.g. mips2). */ |
| /* Disable branchlikely for tx39 until compare rewrite. They haven't |
| been generated up to this point. */ |
| #define ISA_HAS_BRANCHLIKELY (!ISA_MIPS1 && mips_isa_rev <= 5) |
| |
| /* ISA has 32 single-precision registers. */ |
| #define ISA_HAS_ODD_SPREG ((mips_isa_rev >= 1 \ |
| && !TARGET_GS464) \ |
| || TARGET_FLOAT64 \ |
| || TARGET_MIPS5900) |
| |
| /* ISA has a three-operand multiplication instruction (usually spelt "mul"). */ |
| #define ISA_HAS_MUL3 ((TARGET_MIPS3900 \ |
| || TARGET_MIPS5400 \ |
| || TARGET_MIPS5500 \ |
| || TARGET_MIPS5900 \ |
| || TARGET_MIPS7000 \ |
| || TARGET_MIPS9000 \ |
| || TARGET_MAD \ |
| || (mips_isa_rev >= 1 \ |
| && mips_isa_rev <= 5)) \ |
| && !TARGET_MIPS16) |
| |
| /* ISA has a three-operand multiplication instruction. */ |
| #define ISA_HAS_DMUL3 (TARGET_64BIT \ |
| && TARGET_OCTEON \ |
| && !TARGET_MIPS16) |
| |
| /* ISA has HI and LO registers. */ |
| #define ISA_HAS_HILO (mips_isa_rev <= 5) |
| |
| /* ISA supports instructions DMULT and DMULTU. */ |
| #define ISA_HAS_DMULT (TARGET_64BIT \ |
| && !TARGET_MIPS5900 \ |
| && mips_isa_rev <= 5) |
| |
| /* ISA supports instructions MULT and MULTU. */ |
| #define ISA_HAS_MULT (mips_isa_rev <= 5) |
| |
| /* ISA supports instructions MUL, MULU, MUH, MUHU. */ |
| #define ISA_HAS_R6MUL (mips_isa_rev >= 6) |
| |
| /* ISA supports instructions DMUL, DMULU, DMUH, DMUHU. */ |
| #define ISA_HAS_R6DMUL (TARGET_64BIT && mips_isa_rev >= 6) |
| |
| /* For Loongson, it is preferable to use the Loongson-specific division and |
| modulo instructions instead of the regular (D)DIV(U) instruction, |
| because the former are faster and can also have the effect of reducing |
| code size. */ |
| #define ISA_AVOID_DIV_HILO ((TARGET_LOONGSON_2EF \ |
| || TARGET_GS464) \ |
| && !TARGET_MIPS16) |
| |
| /* ISA supports instructions DDIV and DDIVU. */ |
| #define ISA_HAS_DDIV (TARGET_64BIT \ |
| && !TARGET_MIPS5900 \ |
| && !ISA_AVOID_DIV_HILO \ |
| && mips_isa_rev <= 5) |
| |
| /* ISA supports instructions DIV and DIVU. |
| This is always true, but the macro is needed for ISA_HAS_<D>DIV |
| in mips.md. */ |
| #define ISA_HAS_DIV (!ISA_AVOID_DIV_HILO \ |
| && mips_isa_rev <= 5) |
| |
| /* ISA supports instructions DIV, DIVU, MOD and MODU. */ |
| #define ISA_HAS_R6DIV (mips_isa_rev >= 6) |
| |
| /* ISA supports instructions DDIV, DDIVU, DMOD and DMODU. */ |
| #define ISA_HAS_R6DDIV (TARGET_64BIT && mips_isa_rev >= 6) |
| |
| /* ISA has the floating-point conditional move instructions introduced |
| in mips4. */ |
| #define ISA_HAS_FP_CONDMOVE ((ISA_MIPS4 \ |
| || (mips_isa_rev >= 1 \ |
| && mips_isa_rev <= 5)) \ |
| && !TARGET_MIPS5500 \ |
| && !TARGET_MIPS16) |
| |
| /* ISA has the integer conditional move instructions introduced in mips4 and |
| ST Loongson 2E/2F. */ |
| #define ISA_HAS_CONDMOVE (ISA_HAS_FP_CONDMOVE \ |
| || TARGET_MIPS5900 \ |
| || TARGET_LOONGSON_2EF) |
| |
| /* ISA has LDC1 and SDC1. */ |
| #define ISA_HAS_LDC1_SDC1 (!ISA_MIPS1 \ |
| && !TARGET_MIPS5900 \ |
| && !TARGET_MIPS16) |
| |
| /* ISA has the mips4 FP condition code instructions: FP-compare to CC, |
| branch on CC, and move (both FP and non-FP) on CC. */ |
| #define ISA_HAS_8CC (ISA_MIPS4 \ |
| || (mips_isa_rev >= 1 \ |
| && mips_isa_rev <= 5)) |
| |
| /* ISA has the FP condition code instructions that store the flag in an |
| FP register. */ |
| #define ISA_HAS_CCF (mips_isa_rev >= 6) |
| |
| #define ISA_HAS_SEL (mips_isa_rev >= 6) |
| |
| /* This is a catch all for other mips4 instructions: indexed load, the |
| FP madd and msub instructions, and the FP recip and recip sqrt |
| instructions. Note that this macro should only be used by other |
| ISA_HAS_* macros. */ |
| #define ISA_HAS_FP4 ((ISA_MIPS4 \ |
| || ISA_MIPS64 \ |
| || (mips_isa_rev >= 2 \ |
| && mips_isa_rev <= 5)) \ |
| && !TARGET_MIPS16) |
| |
| /* ISA has floating-point indexed load and store instructions |
| (LWXC1, LDXC1, SWXC1 and SDXC1). */ |
| #define ISA_HAS_LXC1_SXC1 (ISA_HAS_FP4 \ |
| && mips_lxc1_sxc1) |
| |
| /* ISA has paired-single instructions. */ |
| #define ISA_HAS_PAIRED_SINGLE ((ISA_MIPS64 \ |
| || (mips_isa_rev >= 2 \ |
| && mips_isa_rev <= 5)) \ |
| && !TARGET_OCTEON) |
| |
| /* ISA has conditional trap instructions. */ |
| #define ISA_HAS_COND_TRAP (!ISA_MIPS1 \ |
| && !TARGET_MIPS16) |
| |
| /* ISA has conditional trap with immediate instructions. */ |
| #define ISA_HAS_COND_TRAPI (!ISA_MIPS1 \ |
| && mips_isa_rev <= 5 \ |
| && !TARGET_MIPS16) |
| |
| /* ISA has integer multiply-accumulate instructions, madd and msub. */ |
| #define ISA_HAS_MADD_MSUB (mips_isa_rev >= 1 \ |
| && mips_isa_rev <= 5) |
| |
| /* Integer multiply-accumulate instructions should be generated. */ |
| #define GENERATE_MADD_MSUB (TARGET_IMADD && !TARGET_MIPS16) |
| |
| /* ISA has 4 operand fused madd instructions of the form |
| 'd = [+-] (a * b [+-] c)'. */ |
| #define ISA_HAS_FUSED_MADD4 (mips_madd4 \ |
| && (TARGET_MIPS8000 \ |
| || TARGET_GS464 \ |
| || TARGET_GS464E \ |
| || TARGET_GS264E)) |
| |
| /* ISA has 4 operand unfused madd instructions of the form |
| 'd = [+-] (a * b [+-] c)'. */ |
| #define ISA_HAS_UNFUSED_MADD4 (mips_madd4 \ |
| && ISA_HAS_FP4 \ |
| && !TARGET_MIPS8000 \ |
| && !TARGET_GS464 \ |
| && !TARGET_GS464E \ |
| && !TARGET_GS264E) |
| |
| /* ISA has 3 operand r6 fused madd instructions of the form |
| 'c = c [+-] (a * b)'. */ |
| #define ISA_HAS_FUSED_MADDF (mips_isa_rev >= 6) |
| |
| /* ISA has 3 operand loongson fused madd instructions of the form |
| 'c = [+-] (a * b [+-] c)'. */ |
| #define ISA_HAS_FUSED_MADD3 TARGET_LOONGSON_2EF |
| |
| /* ISA has floating-point RECIP.fmt and RSQRT.fmt instructions. The |
| MIPS64 rev. 1 ISA says that RECIP.D and RSQRT.D are unpredictable when |
| doubles are stored in pairs of FPRs, so for safety's sake, we apply |
| this restriction to the MIPS IV ISA too. */ |
| #define ISA_HAS_FP_RECIP_RSQRT(MODE) \ |
| (((ISA_HAS_FP4 \ |
| && ((MODE) == SFmode \ |
| || ((TARGET_FLOAT64 \ |
| || mips_isa_rev >= 2) \ |
| && (MODE) == DFmode))) \ |
| || (((MODE) == SFmode \ |
| || (MODE) == DFmode) \ |
| && (mips_isa_rev >= 6)) \ |
| || (TARGET_SB1 \ |
| && (MODE) == V2SFmode)) \ |
| && !TARGET_MIPS16) |
| |
| #define ISA_HAS_LWL_LWR (mips_isa_rev <= 5 && !TARGET_MIPS16) |
| |
| #define ISA_HAS_IEEE_754_LEGACY (mips_isa_rev <= 5) |
| |
| #define ISA_HAS_IEEE_754_2008 (mips_isa_rev >= 2) |
| |
| /* ISA has count leading zeroes/ones instruction (not implemented). */ |
| #define ISA_HAS_CLZ_CLO (mips_isa_rev >= 1 && !TARGET_MIPS16) |
| |
| /* ISA has count trailing zeroes/ones instruction. */ |
| #define ISA_HAS_CTZ_CTO (TARGET_LOONGSON_EXT2) |
| |
| /* ISA has three operand multiply instructions that put |
| the high part in an accumulator: mulhi or mulhiu. */ |
| #define ISA_HAS_MULHI ((TARGET_MIPS5400 \ |
| || TARGET_MIPS5500 \ |
| || TARGET_SR71K) \ |
| && !TARGET_MIPS16) |
| |
| /* ISA has three operand multiply instructions that negate the |
| result and put the result in an accumulator. */ |
| #define ISA_HAS_MULS ((TARGET_MIPS5400 \ |
| || TARGET_MIPS5500 \ |
| || TARGET_SR71K) \ |
| && !TARGET_MIPS16) |
| |
| /* ISA has three operand multiply instructions that subtract the |
| result from a 4th operand and put the result in an accumulator. */ |
| #define ISA_HAS_MSAC ((TARGET_MIPS5400 \ |
| || TARGET_MIPS5500 \ |
| || TARGET_SR71K) \ |
| && !TARGET_MIPS16) |
| |
| /* ISA has three operand multiply instructions that add the result |
| to a 4th operand and put the result in an accumulator. */ |
| #define ISA_HAS_MACC ((TARGET_MIPS4120 \ |
| || TARGET_MIPS4130 \ |
| || TARGET_MIPS5400 \ |
| || TARGET_MIPS5500 \ |
| || TARGET_SR71K) \ |
| && !TARGET_MIPS16) |
| |
| /* ISA has NEC VR-style MACC, MACCHI, DMACC and DMACCHI instructions. */ |
| #define ISA_HAS_MACCHI ((TARGET_MIPS4120 \ |
| || TARGET_MIPS4130) \ |
| && !TARGET_MIPS16) |
| |
| /* ISA has the "ror" (rotate right) instructions. */ |
| #define ISA_HAS_ROR ((mips_isa_rev >= 2 \ |
| || TARGET_MIPS5400 \ |
| || TARGET_MIPS5500 \ |
| || TARGET_SR71K \ |
| || TARGET_SMARTMIPS) \ |
| && !TARGET_MIPS16) |
| |
| /* ISA has the WSBH (word swap bytes within halfwords) instruction. |
| 64-bit targets also provide DSBH and DSHD. */ |
| #define ISA_HAS_WSBH (mips_isa_rev >= 2 && !TARGET_MIPS16) |
| |
| /* ISA has data prefetch instructions. This controls use of 'pref'. */ |
| #define ISA_HAS_PREFETCH ((ISA_MIPS4 \ |
| || TARGET_LOONGSON_2EF \ |
| || TARGET_MIPS5900 \ |
| || mips_isa_rev >= 1) \ |
| && !TARGET_MIPS16) |
| |
| /* ISA has data prefetch, LL and SC with limited 9-bit displacement. */ |
| #define ISA_HAS_9BIT_DISPLACEMENT (mips_isa_rev >= 6) |
| |
| /* ISA has data indexed prefetch instructions. This controls use of |
| 'prefx', along with TARGET_HARD_FLOAT and TARGET_DOUBLE_FLOAT. |
| (prefx is a cop1x instruction, so can only be used if FP is |
| enabled.) */ |
| #define ISA_HAS_PREFETCHX (ISA_HAS_FP4 \ |
| || TARGET_LOONGSON_EXT \ |
| || TARGET_LOONGSON_EXT2) |
| |
| /* True if trunc.w.s and trunc.w.d are real (not synthetic) |
| instructions. Both require TARGET_HARD_FLOAT, and trunc.w.d |
| also requires TARGET_DOUBLE_FLOAT. */ |
| #define ISA_HAS_TRUNC_W (!ISA_MIPS1) |
| |
| /* ISA includes the MIPS32r2 seb and seh instructions. */ |
| #define ISA_HAS_SEB_SEH (mips_isa_rev >= 2 && !TARGET_MIPS16) |
| |
| /* ISA includes the MIPS32/64 rev 2 ext and ins instructions. */ |
| #define ISA_HAS_EXT_INS (mips_isa_rev >= 2 && !TARGET_MIPS16) |
| |
| /* ISA has instructions for accessing top part of 64-bit fp regs. */ |
| #define ISA_HAS_MXHC1 (!TARGET_FLOAT32 \ |
| && mips_isa_rev >= 2) |
| |
| /* ISA has lwxs instruction (load w/scaled index address. */ |
| #define ISA_HAS_LWXS ((TARGET_SMARTMIPS || TARGET_MICROMIPS) \ |
| && !TARGET_MIPS16) |
| |
| /* ISA has lbx, lbux, lhx, lhx, lhux, lwx, lwux, or ldx instruction. */ |
| #define ISA_HAS_LBX (TARGET_OCTEON2) |
| #define ISA_HAS_LBUX (ISA_HAS_DSP || TARGET_OCTEON2) |
| #define ISA_HAS_LHX (ISA_HAS_DSP || TARGET_OCTEON2) |
| #define ISA_HAS_LHUX (TARGET_OCTEON2) |
| #define ISA_HAS_LWX (ISA_HAS_DSP || TARGET_OCTEON2) |
| #define ISA_HAS_LWUX (TARGET_OCTEON2 && TARGET_64BIT) |
| #define ISA_HAS_LDX ((ISA_HAS_DSP || TARGET_OCTEON2) \ |
| && TARGET_64BIT) |
| |
| /* The DSP ASE is available. */ |
| #define ISA_HAS_DSP (TARGET_DSP && !TARGET_MIPS16) |
| |
| /* Revision 2 of the DSP ASE is available. */ |
| #define ISA_HAS_DSPR2 (TARGET_DSPR2 && !TARGET_MIPS16) |
| |
| /* The MSA ASE is available. */ |
| #define ISA_HAS_MSA (TARGET_MSA && !TARGET_MIPS16) |
| |
| /* True if the result of a load is not available to the next instruction. |
| A nop will then be needed between instructions like "lw $4,..." |
| and "addiu $4,$4,1". */ |
| #define ISA_HAS_LOAD_DELAY (ISA_MIPS1 \ |
| && !TARGET_MIPS3900 \ |
| && !TARGET_MIPS5900 \ |
| && !TARGET_MIPS16 \ |
| && !TARGET_MICROMIPS) |
| |
| /* Likewise mtc1 and mfc1. */ |
| #define ISA_HAS_XFER_DELAY (mips_isa <= 3 \ |
| && !TARGET_MIPS5900 \ |
| && !TARGET_LOONGSON_2EF) |
| |
| /* Likewise floating-point comparisons. */ |
| #define ISA_HAS_FCMP_DELAY (mips_isa <= 3 \ |
| && !TARGET_MIPS5900 \ |
| && !TARGET_LOONGSON_2EF) |
| |
| /* True if mflo and mfhi can be immediately followed by instructions |
| which write to the HI and LO registers. |
| |
| According to MIPS specifications, MIPS ISAs I, II, and III need |
| (at least) two instructions between the reads of HI/LO and |
| instructions which write them, and later ISAs do not. Contradicting |
| the MIPS specifications, some MIPS IV processor user manuals (e.g. |
| the UM for the NEC Vr5000) document needing the instructions between |
| HI/LO reads and writes, as well. Therefore, we declare only MIPS32, |
| MIPS64 and later ISAs to have the interlocks, plus any specific |
| earlier-ISA CPUs for which CPU documentation declares that the |
| instructions are really interlocked. */ |
| #define ISA_HAS_HILO_INTERLOCKS (mips_isa_rev >= 1 \ |
| || TARGET_MIPS5500 \ |
| || TARGET_MIPS5900 \ |
| || TARGET_LOONGSON_2EF) |
| |
| /* ISA includes synci, jr.hb and jalr.hb. */ |
| #define ISA_HAS_SYNCI (mips_isa_rev >= 2 && !TARGET_MIPS16) |
| |
| /* ISA includes sync. */ |
| #define ISA_HAS_SYNC ((mips_isa >= 2 || TARGET_MIPS3900) && !TARGET_MIPS16) |
| #define GENERATE_SYNC \ |
| (target_flags_explicit & MASK_LLSC \ |
| ? TARGET_LLSC && !TARGET_MIPS16 \ |
| : ISA_HAS_SYNC) |
| |
| /* ISA includes ll and sc. Note that this implies ISA_HAS_SYNC |
| because the expanders use both ISA_HAS_SYNC and ISA_HAS_LL_SC |
| instructions. */ |
| #define ISA_HAS_LL_SC (mips_isa >= 2 && !TARGET_MIPS5900 && !TARGET_MIPS16) |
| #define GENERATE_LL_SC \ |
| (target_flags_explicit & MASK_LLSC \ |
| ? TARGET_LLSC && !TARGET_MIPS16 \ |
| : ISA_HAS_LL_SC) |
| |
| #define ISA_HAS_SWAP (TARGET_XLP) |
| #define ISA_HAS_LDADD (TARGET_XLP) |
| |
| /* ISA includes the baddu instruction. */ |
| #define ISA_HAS_BADDU (TARGET_OCTEON && !TARGET_MIPS16) |
| |
| /* ISA includes the bbit* instructions. */ |
| #define ISA_HAS_BBIT (TARGET_OCTEON && !TARGET_MIPS16) |
| |
| /* ISA includes the cins instruction. */ |
| #define ISA_HAS_CINS (TARGET_OCTEON && !TARGET_MIPS16) |
| |
| /* ISA includes the exts instruction. */ |
| #define ISA_HAS_EXTS (TARGET_OCTEON && !TARGET_MIPS16) |
| |
| /* ISA includes the seq and sne instructions. */ |
| #define ISA_HAS_SEQ_SNE (TARGET_OCTEON && !TARGET_MIPS16) |
| |
| /* ISA includes the pop instruction. */ |
| #define ISA_HAS_POP (TARGET_OCTEON && !TARGET_MIPS16) |
| |
| /* The CACHE instruction is available in non-MIPS16 code. */ |
| #define TARGET_CACHE_BUILTIN (mips_isa >= 3) |
| |
| /* The CACHE instruction is available. */ |
| #define ISA_HAS_CACHE (TARGET_CACHE_BUILTIN && !TARGET_MIPS16) |
| |
| /* Tell collect what flags to pass to nm. */ |
| #ifndef NM_FLAGS |
| #define NM_FLAGS "-Bn" |
| #endif |
| |
| |
| /* SUBTARGET_ASM_DEBUGGING_SPEC handles passing debugging options to |
| the assembler. It may be overridden by subtargets. |
| |
| Beginning with gas 2.13, -mdebug must be passed to correctly handle |
| COFF debugging info. */ |
| |
| #ifndef SUBTARGET_ASM_DEBUGGING_SPEC |
| #define SUBTARGET_ASM_DEBUGGING_SPEC "\ |
| %{g} %{g0} %{g1} %{g2} %{g3} \ |
| %{ggdb:-g} %{ggdb0:-g0} %{ggdb1:-g1} %{ggdb2:-g2} %{ggdb3:-g3} \ |
| %{gstabs:-g} %{gstabs0:-g0} %{gstabs1:-g1} %{gstabs2:-g2} %{gstabs3:-g3} \ |
| %{gstabs+:-g} %{gstabs+0:-g0} %{gstabs+1:-g1} %{gstabs+2:-g2} %{gstabs+3:-g3}" |
| #endif |
| |
| /* FP_ASM_SPEC represents the floating-point options that must be passed |
| to the assembler when FPXX support exists. Prior to that point the |
| assembler could accept the options but were not required for |
| correctness. We only add the options when absolutely necessary |
| because passing -msoft-float to the assembler will cause it to reject |
| all hard-float instructions which may require some user code to be |
| updated. */ |
| |
| #ifdef HAVE_AS_DOT_MODULE |
| #define FP_ASM_SPEC "\ |
| %{mhard-float} %{msoft-float} \ |
| %{msingle-float} %{mdouble-float}" |
| #else |
| #define FP_ASM_SPEC |
| #endif |
| |
| /* SUBTARGET_ASM_SPEC is always passed to the assembler. It may be |
| overridden by subtargets. */ |
| |
| #ifndef SUBTARGET_ASM_SPEC |
| #define SUBTARGET_ASM_SPEC "" |
| #endif |
| |
| #undef ASM_SPEC |
| #define ASM_SPEC "\ |
| %{G*} %(endian_spec) %{mips1} %{mips2} %{mips3} %{mips4} \ |
| %{mips32*} %{mips64*} \ |
| %{mips16} %{mno-mips16:-no-mips16} \ |
| %{mmicromips} %{mno-micromips} \ |
| %{mips3d} %{mno-mips3d:-no-mips3d} \ |
| %{mdmx} %{mno-mdmx:-no-mdmx} \ |
| %{mdsp} %{mno-dsp} \ |
| %{mdspr2} %{mno-dspr2} \ |
| %{mmcu} %{mno-mcu} \ |
| %{meva} %{mno-eva} \ |
| %{mvirt} %{mno-virt} \ |
| %{mxpa} %{mno-xpa} \ |
| %{mcrc} %{mno-crc} \ |
| %{mginv} %{mno-ginv} \ |
| %{mmsa} %{mno-msa} \ |
| %{mloongson-mmi} %{mno-loongson-mmi} \ |
| %{mloongson-ext} %{mno-loongson-ext} \ |
| %{mloongson-ext2} %{mno-loongson-ext2} \ |
| %{msmartmips} %{mno-smartmips} \ |
| %{mmt} %{mno-mt} \ |
| %{mfix-r5900} %{mno-fix-r5900} \ |
| %{mfix-rm7000} %{mno-fix-rm7000} \ |
| %{mfix-vr4120} %{mfix-vr4130} \ |
| %{mfix-24k} \ |
| %{noasmopt:-O0; O0|fno-delayed-branch:-O1; O*:-O2; :-O1} \ |
| %(subtarget_asm_debugging_spec) \ |
| %{mabi=*} %{!mabi=*: %(asm_abi_default_spec)} \ |
| %{mgp32} %{mgp64} %{march=*} %{mxgot:-xgot} \ |
| %{mfp32} %{mfpxx} %{mfp64} %{mnan=*} \ |
| %{modd-spreg} %{mno-odd-spreg} \ |
| %{mshared} %{mno-shared} \ |
| %{msym32} %{mno-sym32} \ |
| %{mtune=*}" \ |
| FP_ASM_SPEC "\ |
| %(subtarget_asm_spec)" |
| |
| /* Extra switches sometimes passed to the linker. */ |
| |
| #ifndef LINK_SPEC |
| #define LINK_SPEC "\ |
| %(endian_spec) \ |
| %{G*} %{mips1} %{mips2} %{mips3} %{mips4} %{mips32*} %{mips64*} \ |
| %{shared}" |
| #endif /* LINK_SPEC defined */ |
| |
| |
| /* Specs for the compiler proper */ |
| |
| /* SUBTARGET_CC1_SPEC is passed to the compiler proper. It may be |
| overridden by subtargets. */ |
| #ifndef SUBTARGET_CC1_SPEC |
| #define SUBTARGET_CC1_SPEC "" |
| #endif |
| |
| /* CC1_SPEC is the set of arguments to pass to the compiler proper. */ |
| |
| #undef CC1_SPEC |
| #define CC1_SPEC "\ |
| %{G*} %{EB:-meb} %{EL:-mel} %{EB:%{EL:%emay not use both -EB and -EL}} \ |
| %(subtarget_cc1_spec)" |
| |
| /* Preprocessor specs. */ |
| |
| /* SUBTARGET_CPP_SPEC is passed to the preprocessor. It may be |
| overridden by subtargets. */ |
| #ifndef SUBTARGET_CPP_SPEC |
| #define SUBTARGET_CPP_SPEC "" |
| #endif |
| |
| #define CPP_SPEC "%(subtarget_cpp_spec)" |
| |
| /* This macro defines names of additional specifications to put in the specs |
| that can be used in various specifications like CC1_SPEC. Its definition |
| is an initializer with a subgrouping for each command option. |
| |
| Each subgrouping contains a string constant, that defines the |
| specification name, and a string constant that used by the GCC driver |
| program. |
| |
| Do not define this macro if it does not need to do anything. */ |
| |
| #define EXTRA_SPECS \ |
| { "subtarget_cc1_spec", SUBTARGET_CC1_SPEC }, \ |
| { "subtarget_cpp_spec", SUBTARGET_CPP_SPEC }, \ |
| { "subtarget_asm_debugging_spec", SUBTARGET_ASM_DEBUGGING_SPEC }, \ |
| { "subtarget_asm_spec", SUBTARGET_ASM_SPEC }, \ |
| { "asm_abi_default_spec", "-" MULTILIB_ABI_DEFAULT }, \ |
| { "endian_spec", ENDIAN_SPEC }, \ |
| SUBTARGET_EXTRA_SPECS |
| |
| #ifndef SUBTARGET_EXTRA_SPECS |
| #define SUBTARGET_EXTRA_SPECS |
| #endif |
| |
| #define DBX_DEBUGGING_INFO 1 /* generate stabs (OSF/rose) */ |
| #define DWARF2_DEBUGGING_INFO 1 /* dwarf2 debugging info */ |
| |
| #ifndef PREFERRED_DEBUGGING_TYPE |
| #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG |
| #endif |
| |
| /* The size of DWARF addresses should be the same as the size of symbols |
| in the target file format. They shouldn't depend on things like -msym32, |
| because many DWARF consumers do not allow the mixture of address sizes |
| that one would then get from linking -msym32 code with -msym64 code. |
| |
| Note that the default POINTER_SIZE test is not appropriate for MIPS. |
| EABI64 has 64-bit pointers but uses 32-bit ELF. */ |
| #define DWARF2_ADDR_SIZE (FILE_HAS_64BIT_SYMBOLS ? 8 : 4) |
| |
| /* By default, turn on GDB extensions. */ |
| #define DEFAULT_GDB_EXTENSIONS 1 |
| |
| /* Registers may have a prefix which can be ignored when matching |
| user asm and register definitions. */ |
| #ifndef REGISTER_PREFIX |
| #define REGISTER_PREFIX "$" |
| #endif |
| |
| /* Local compiler-generated symbols must have a prefix that the assembler |
| understands. By default, this is $, although some targets (e.g., |
| NetBSD-ELF) need to override this. */ |
| |
| #ifndef LOCAL_LABEL_PREFIX |
| #define LOCAL_LABEL_PREFIX "$" |
| #endif |
| |
| /* By default on the mips, external symbols do not have an underscore |
| prepended, but some targets (e.g., NetBSD) require this. */ |
| |
| #ifndef USER_LABEL_PREFIX |
| #define USER_LABEL_PREFIX "" |
| #endif |
| |
| /* On Sun 4, this limit is 2048. We use 1500 to be safe, |
| since the length can run past this up to a continuation point. */ |
| #undef DBX_CONTIN_LENGTH |
| #define DBX_CONTIN_LENGTH 1500 |
| |
| /* How to renumber registers for dbx and gdb. */ |
| #define DBX_REGISTER_NUMBER(REGNO) mips_dbx_regno[REGNO] |
| |
| /* The mapping from gcc register number to DWARF 2 CFA column number. */ |
| #define DWARF_FRAME_REGNUM(REGNO) mips_dwarf_regno[REGNO] |
| |
| /* The DWARF 2 CFA column which tracks the return address. */ |
| #define DWARF_FRAME_RETURN_COLUMN RETURN_ADDR_REGNUM |
| |
| /* Before the prologue, RA lives in r31. */ |
| #define INCOMING_RETURN_ADDR_RTX gen_rtx_REG (Pmode, RETURN_ADDR_REGNUM) |
| |
| /* Describe how we implement __builtin_eh_return. */ |
| #define EH_RETURN_DATA_REGNO(N) \ |
| ((N) < (TARGET_MIPS16 ? 2 : 4) ? (N) + GP_ARG_FIRST : INVALID_REGNUM) |
| |
| #define EH_RETURN_STACKADJ_RTX gen_rtx_REG (Pmode, GP_REG_FIRST + 3) |
| |
| #define EH_USES(N) mips_eh_uses (N) |
| |
| /* Offsets recorded in opcodes are a multiple of this alignment factor. |
| The default for this in 64-bit mode is 8, which causes problems with |
| SFmode register saves. */ |
| #define DWARF_CIE_DATA_ALIGNMENT -4 |
| |
| /* Correct the offset of automatic variables and arguments. Note that |
| the MIPS debug format wants all automatic variables and arguments |
| to be in terms of the virtual frame pointer (stack pointer before |
| any adjustment in the function), while the MIPS 3.0 linker wants |
| the frame pointer to be the stack pointer after the initial |
| adjustment. */ |
| |
| #define DEBUGGER_AUTO_OFFSET(X) \ |
| mips_debugger_offset (X, (HOST_WIDE_INT) 0) |
| #define DEBUGGER_ARG_OFFSET(OFFSET, X) \ |
| mips_debugger_offset (X, (HOST_WIDE_INT) OFFSET) |
| |
| /* Target machine storage layout */ |
| |
| #define BITS_BIG_ENDIAN 0 |
| #define BYTES_BIG_ENDIAN (TARGET_BIG_ENDIAN != 0) |
| #define WORDS_BIG_ENDIAN (TARGET_BIG_ENDIAN != 0) |
| |
| #define MAX_BITS_PER_WORD 64 |
| |
| /* Width of a word, in units (bytes). */ |
| #define UNITS_PER_WORD (TARGET_64BIT ? 8 : 4) |
| #ifndef IN_LIBGCC2 |
| #define MIN_UNITS_PER_WORD 4 |
| #endif |
| |
| /* Width of a MSA vector register in bytes. */ |
| #define UNITS_PER_MSA_REG 16 |
| /* Width of a MSA vector register in bits. */ |
| #define BITS_PER_MSA_REG (UNITS_PER_MSA_REG * BITS_PER_UNIT) |
| |
| /* For MIPS, width of a floating point register. */ |
| #define UNITS_PER_FPREG (TARGET_FLOAT64 ? 8 : 4) |
| |
| /* The number of consecutive floating-point registers needed to store the |
| largest format supported by the FPU. */ |
| #define MAX_FPRS_PER_FMT (TARGET_FLOAT64 || TARGET_SINGLE_FLOAT ? 1 : 2) |
| |
| /* The number of consecutive floating-point registers needed to store the |
| smallest format supported by the FPU. */ |
| #define MIN_FPRS_PER_FMT \ |
| (TARGET_ODD_SPREG ? 1 : MAX_FPRS_PER_FMT) |
| |
| /* The largest size of value that can be held in floating-point |
| registers and moved with a single instruction. */ |
| #define UNITS_PER_HWFPVALUE \ |
| (TARGET_SOFT_FLOAT_ABI ? 0 : MAX_FPRS_PER_FMT * UNITS_PER_FPREG) |
| |
| /* The largest size of value that can be held in floating-point |
| registers. */ |
| #define UNITS_PER_FPVALUE \ |
| (TARGET_SOFT_FLOAT_ABI ? 0 \ |
| : TARGET_SINGLE_FLOAT ? UNITS_PER_FPREG \ |
| : LONG_DOUBLE_TYPE_SIZE / BITS_PER_UNIT) |
| |
| /* The number of bytes in a double. */ |
| #define UNITS_PER_DOUBLE (TYPE_PRECISION (double_type_node) / BITS_PER_UNIT) |
| |
| /* Set the sizes of the core types. */ |
| #define SHORT_TYPE_SIZE 16 |
| #define INT_TYPE_SIZE 32 |
| #define LONG_TYPE_SIZE (TARGET_LONG64 ? 64 : 32) |
| #define LONG_LONG_TYPE_SIZE 64 |
| |
| #define FLOAT_TYPE_SIZE 32 |
| #define DOUBLE_TYPE_SIZE 64 |
| #define LONG_DOUBLE_TYPE_SIZE (TARGET_NEWABI ? 128 : 64) |
| |
| /* Define the sizes of fixed-point types. */ |
| #define SHORT_FRACT_TYPE_SIZE 8 |
| #define FRACT_TYPE_SIZE 16 |
| #define LONG_FRACT_TYPE_SIZE 32 |
| #define LONG_LONG_FRACT_TYPE_SIZE 64 |
| |
| #define SHORT_ACCUM_TYPE_SIZE 16 |
| #define ACCUM_TYPE_SIZE 32 |
| #define LONG_ACCUM_TYPE_SIZE 64 |
| /* FIXME. LONG_LONG_ACCUM_TYPE_SIZE should be 128 bits, but GCC |
| doesn't support 128-bit integers for MIPS32 currently. */ |
| #define LONG_LONG_ACCUM_TYPE_SIZE (TARGET_64BIT ? 128 : 64) |
| |
| /* long double is not a fixed mode, but the idea is that, if we |
| support long double, we also want a 128-bit integer type. */ |
| #define MAX_FIXED_MODE_SIZE LONG_DOUBLE_TYPE_SIZE |
| |
| /* Width in bits of a pointer. */ |
| #ifndef POINTER_SIZE |
| #define POINTER_SIZE ((TARGET_LONG64 && TARGET_64BIT) ? 64 : 32) |
| #endif |
| |
| /* Allocation boundary (in *bits*) for storing arguments in argument list. */ |
| #define PARM_BOUNDARY BITS_PER_WORD |
| |
| /* Allocation boundary (in *bits*) for the code of a function. */ |
| #define FUNCTION_BOUNDARY 32 |
| |
| /* Alignment of field after `int : 0' in a structure. */ |
| #define EMPTY_FIELD_BOUNDARY 32 |
| |
| /* Every structure's size must be a multiple of this. */ |
| /* 8 is observed right on a DECstation and on riscos 4.02. */ |
| #define STRUCTURE_SIZE_BOUNDARY 8 |
| |
| /* There is no point aligning anything to a rounder boundary than |
| LONG_DOUBLE_TYPE_SIZE, unless under MSA the bigggest alignment is |
| BITS_PER_MSA_REG. */ |
| #define BIGGEST_ALIGNMENT \ |
| (ISA_HAS_MSA ? BITS_PER_MSA_REG : LONG_DOUBLE_TYPE_SIZE) |
| |
| /* All accesses must be aligned. */ |
| #define STRICT_ALIGNMENT 1 |
| |
| /* Define this if you wish to imitate the way many other C compilers |
| handle alignment of bitfields and the structures that contain |
| them. |
| |
| The behavior is that the type written for a bit-field (`int', |
| `short', or other integer type) imposes an alignment for the |
| entire structure, as if the structure really did contain an |
| ordinary field of that type. In addition, the bit-field is placed |
| within the structure so that it would fit within such a field, |
| not crossing a boundary for it. |
| |
| Thus, on most machines, a bit-field whose type is written as `int' |
| would not cross a four-byte boundary, and would force four-byte |
| alignment for the whole structure. (The alignment used may not |
| be four bytes; it is controlled by the other alignment |
| parameters.) |
| |
| If the macro is defined, its definition should be a C expression; |
| a nonzero value for the expression enables this behavior. */ |
| |
| #define PCC_BITFIELD_TYPE_MATTERS 1 |
| |
| /* If defined, a C expression to compute the alignment for a static |
| variable. TYPE is the data type, and ALIGN is the alignment that |
| the object would ordinarily have. The value of this macro is used |
| instead of that alignment to align the object. |
| |
| If this macro is not defined, then ALIGN is used. |
| |
| One use of this macro is to increase alignment of medium-size |
| data to make it all fit in fewer cache lines. Another is to |
| cause character arrays to be word-aligned so that `strcpy' calls |
| that copy constants to character arrays can be done inline. */ |
| |
| #undef DATA_ALIGNMENT |
| #define DATA_ALIGNMENT(TYPE, ALIGN) \ |
| ((((ALIGN) < BITS_PER_WORD) \ |
| && (TREE_CODE (TYPE) == ARRAY_TYPE \ |
| || TREE_CODE (TYPE) == UNION_TYPE \ |
| || TREE_CODE (TYPE) == RECORD_TYPE)) ? BITS_PER_WORD : (ALIGN)) |
| |
| /* We need this for the same reason as DATA_ALIGNMENT, namely to cause |
| character arrays to be word-aligned so that `strcpy' calls that copy |
| constants to character arrays can be done inline, and 'strcmp' can be |
| optimised to use word loads. */ |
| #define LOCAL_ALIGNMENT(TYPE, ALIGN) \ |
| DATA_ALIGNMENT (TYPE, ALIGN) |
| |
| #define PAD_VARARGS_DOWN \ |
| (targetm.calls.function_arg_padding (TYPE_MODE (type), type) == PAD_DOWNWARD) |
| |
| /* Define if operations between registers always perform the operation |
| on the full register even if a narrower mode is specified. */ |
| #define WORD_REGISTER_OPERATIONS 1 |
| |
| /* When in 64-bit mode, move insns will sign extend SImode and CCmode |
| moves. All other references are zero extended. */ |
| #define LOAD_EXTEND_OP(MODE) \ |
| (TARGET_64BIT && ((MODE) == SImode || (MODE) == CCmode) \ |
| ? SIGN_EXTEND : ZERO_EXTEND) |
| |
| /* 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. */ |
| |
| #define PROMOTE_MODE(MODE, UNSIGNEDP, TYPE) \ |
| if (GET_MODE_CLASS (MODE) == MODE_INT \ |
| && GET_MODE_SIZE (MODE) < UNITS_PER_WORD) \ |
| { \ |
| if ((MODE) == SImode) \ |
| (UNSIGNEDP) = 0; \ |
| (MODE) = Pmode; \ |
| } |
| |
| /* Pmode is always the same as ptr_mode, but not always the same as word_mode. |
| Extensions of pointers to word_mode must be signed. */ |
| #define POINTERS_EXTEND_UNSIGNED false |
| |
| /* Define if loading short immediate values into registers sign extends. */ |
| #define SHORT_IMMEDIATES_SIGN_EXTEND 1 |
| |
| /* The [d]clz instructions have the natural values at 0. */ |
| |
| #define CLZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) \ |
| ((VALUE) = GET_MODE_UNIT_BITSIZE (MODE), 2) |
| |
| /* Standard register usage. */ |
| |
| /* Number of hardware registers. We have: |
| |
| - 32 integer registers |
| - 32 floating point registers |
| - 8 condition code registers |
| - 2 accumulator registers (hi and lo) |
| - 32 registers each for coprocessors 0, 2 and 3 |
| - 4 fake registers: |
| - ARG_POINTER_REGNUM |
| - FRAME_POINTER_REGNUM |
| - GOT_VERSION_REGNUM (see the comment above load_call<mode> for details) |
| - CPRESTORE_SLOT_REGNUM |
| - 2 dummy entries that were used at various times in the past. |
| - 6 DSP accumulator registers (3 hi-lo pairs) for MIPS DSP ASE |
| - 6 DSP control registers */ |
| |
| #define FIRST_PSEUDO_REGISTER 188 |
| |
| /* By default, fix the kernel registers ($26 and $27), the global |
| pointer ($28) and the stack pointer ($29). This can change |
| depending on the command-line options. |
| |
| Regarding coprocessor registers: without evidence to the contrary, |
| it's best to assume that each coprocessor register has a unique |
| use. This can be overridden, in, e.g., mips_option_override or |
| TARGET_CONDITIONAL_REGISTER_USAGE should the assumption be |
| inappropriate for a particular target. */ |
| |
| #define FIXED_REGISTERS \ |
| { \ |
| 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, 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, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, \ |
| /* COP0 registers */ \ |
| 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \ |
| 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \ |
| /* COP2 registers */ \ |
| 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \ |
| 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \ |
| /* COP3 registers */ \ |
| 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \ |
| 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \ |
| /* 6 DSP accumulator registers & 6 control registers */ \ |
| 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1 \ |
| } |
| |
| |
| /* Set up this array for o32 by default. |
| |
| Note that we don't mark $31 as a call-clobbered register. The idea is |
| that it's really the call instructions themselves which clobber $31. |
| We don't care what the called function does with it afterwards. |
| |
| This approach makes it easier to implement sibcalls. Unlike normal |
| calls, sibcalls don't clobber $31, so the register reaches the |
| called function in tact. EPILOGUE_USES says that $31 is useful |
| to the called function. */ |
| |
| #define CALL_REALLY_USED_REGISTERS \ |
| { /* General registers. */ \ |
| 1, 1, 1, 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, 0, 1, 0, 0, \ |
| /* Floating-point registers. */ \ |
| 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, \ |
| /* Others. */ \ |
| 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, \ |
| /* COP0 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, \ |
| /* COP2 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, \ |
| /* COP3 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, \ |
| /* 6 DSP accumulator registers & 6 control registers */ \ |
| 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0 \ |
| } |
| |
| /* Internal macros to classify a register number as to whether it's a |
| general purpose register, a floating point register, a |
| multiply/divide register, or a status register. */ |
| |
| #define GP_REG_FIRST 0 |
| #define GP_REG_LAST 31 |
| #define GP_REG_NUM (GP_REG_LAST - GP_REG_FIRST + 1) |
| #define GP_DBX_FIRST 0 |
| #define K0_REG_NUM (GP_REG_FIRST + 26) |
| #define K1_REG_NUM (GP_REG_FIRST + 27) |
| #define KERNEL_REG_P(REGNO) (IN_RANGE (REGNO, K0_REG_NUM, K1_REG_NUM)) |
| |
| #define FP_REG_FIRST 32 |
| #define FP_REG_LAST 63 |
| #define FP_REG_NUM (FP_REG_LAST - FP_REG_FIRST + 1) |
| #define FP_DBX_FIRST ((write_symbols == DBX_DEBUG) ? 38 : 32) |
| |
| #define MD_REG_FIRST 64 |
| #define MD_REG_LAST 65 |
| #define MD_REG_NUM (MD_REG_LAST - MD_REG_FIRST + 1) |
| #define MD_DBX_FIRST (FP_DBX_FIRST + FP_REG_NUM) |
| |
| #define MSA_REG_FIRST FP_REG_FIRST |
| #define MSA_REG_LAST FP_REG_LAST |
| #define MSA_REG_NUM FP_REG_NUM |
| |
| /* The DWARF 2 CFA column which tracks the return address from a |
| signal handler context. This means that to maintain backwards |
| compatibility, no hard register can be assigned this column if it |
| would need to be handled by the DWARF unwinder. */ |
| #define DWARF_ALT_FRAME_RETURN_COLUMN 66 |
| |
| #define ST_REG_FIRST 67 |
| #define ST_REG_LAST 74 |
| #define ST_REG_NUM (ST_REG_LAST - ST_REG_FIRST + 1) |
| |
| |
| /* FIXME: renumber. */ |
| #define COP0_REG_FIRST 80 |
| #define COP0_REG_LAST 111 |
| #define COP0_REG_NUM (COP0_REG_LAST - COP0_REG_FIRST + 1) |
| |
| #define COP0_STATUS_REG_NUM (COP0_REG_FIRST + 12) |
| #define COP0_CAUSE_REG_NUM (COP0_REG_FIRST + 13) |
| #define COP0_EPC_REG_NUM (COP0_REG_FIRST + 14) |
| |
| #define COP2_REG_FIRST 112 |
| #define COP2_REG_LAST 143 |
| #define COP2_REG_NUM (COP2_REG_LAST - COP2_REG_FIRST + 1) |
| |
| #define COP3_REG_FIRST 144 |
| #define COP3_REG_LAST 175 |
| #define COP3_REG_NUM (COP3_REG_LAST - COP3_REG_FIRST + 1) |
| |
| /* These definitions assume that COP0, 2 and 3 are numbered consecutively. */ |
| #define ALL_COP_REG_FIRST COP0_REG_FIRST |
| #define ALL_COP_REG_LAST COP3_REG_LAST |
| #define ALL_COP_REG_NUM (ALL_COP_REG_LAST - ALL_COP_REG_FIRST + 1) |
| |
| #define DSP_ACC_REG_FIRST 176 |
| #define DSP_ACC_REG_LAST 181 |
| #define DSP_ACC_REG_NUM (DSP_ACC_REG_LAST - DSP_ACC_REG_FIRST + 1) |
| |
| #define AT_REGNUM (GP_REG_FIRST + 1) |
| #define HI_REGNUM (TARGET_BIG_ENDIAN ? MD_REG_FIRST : MD_REG_FIRST + 1) |
| #define LO_REGNUM (TARGET_BIG_ENDIAN ? MD_REG_FIRST + 1 : MD_REG_FIRST) |
| |
| /* A few bitfield locations for the coprocessor registers. */ |
| /* Request Interrupt Priority Level is from bit 10 to bit 15 of |
| the cause register for the EIC interrupt mode. */ |
| #define CAUSE_IPL 10 |
| /* COP1 Enable is at bit 29 of the status register. */ |
| #define SR_COP1 29 |
| /* Interrupt Priority Level is from bit 10 to bit 15 of the status register. */ |
| #define SR_IPL 10 |
| /* Interrupt masks start with IM0 at bit 8 to IM7 at bit 15 of the status |
| register. */ |
| #define SR_IM0 8 |
| /* Exception Level is at bit 1 of the status register. */ |
| #define SR_EXL 1 |
| /* Interrupt Enable is at bit 0 of the status register. */ |
| #define SR_IE 0 |
| |
| /* FPSW_REGNUM is the single condition code used if !ISA_HAS_8CC. |
| If ISA_HAS_8CC, it should not be used, and an arbitrary ST_REG |
| should be used instead. */ |
| #define FPSW_REGNUM ST_REG_FIRST |
| |
| #define GP_REG_P(REGNO) \ |
| ((unsigned int) ((int) (REGNO) - GP_REG_FIRST) < GP_REG_NUM) |
| #define M16_REG_P(REGNO) \ |
| (((REGNO) >= 2 && (REGNO) <= 7) || (REGNO) == 16 || (REGNO) == 17) |
| #define M16STORE_REG_P(REGNO) \ |
| (((REGNO) >= 2 && (REGNO) <= 7) || (REGNO) == 0 || (REGNO) == 17) |
| #define FP_REG_P(REGNO) \ |
| ((unsigned int) ((int) (REGNO) - FP_REG_FIRST) < FP_REG_NUM) |
| #define MD_REG_P(REGNO) \ |
| ((unsigned int) ((int) (REGNO) - MD_REG_FIRST) < MD_REG_NUM) |
| #define ST_REG_P(REGNO) \ |
| ((unsigned int) ((int) (REGNO) - ST_REG_FIRST) < ST_REG_NUM) |
| #define COP0_REG_P(REGNO) \ |
| ((unsigned int) ((int) (REGNO) - COP0_REG_FIRST) < COP0_REG_NUM) |
| #define COP2_REG_P(REGNO) \ |
| ((unsigned int) ((int) (REGNO) - COP2_REG_FIRST) < COP2_REG_NUM) |
| #define COP3_REG_P(REGNO) \ |
| ((unsigned int) ((int) (REGNO) - COP3_REG_FIRST) < COP3_REG_NUM) |
| #define ALL_COP_REG_P(REGNO) \ |
| ((unsigned int) ((int) (REGNO) - COP0_REG_FIRST) < ALL_COP_REG_NUM) |
| /* Test if REGNO is one of the 6 new DSP accumulators. */ |
| #define DSP_ACC_REG_P(REGNO) \ |
| ((unsigned int) ((int) (REGNO) - DSP_ACC_REG_FIRST) < DSP_ACC_REG_NUM) |
| /* Test if REGNO is hi, lo, or one of the 6 new DSP accumulators. */ |
| #define ACC_REG_P(REGNO) \ |
| (MD_REG_P (REGNO) || DSP_ACC_REG_P (REGNO)) |
| #define MSA_REG_P(REGNO) \ |
| ((unsigned int) ((int) (REGNO) - MSA_REG_FIRST) < MSA_REG_NUM) |
| |
| #define FP_REG_RTX_P(X) (REG_P (X) && FP_REG_P (REGNO (X))) |
| #define MSA_REG_RTX_P(X) (REG_P (X) && MSA_REG_P (REGNO (X))) |
| |
| /* True if X is (const (unspec [(const_int 0)] UNSPEC_GP)). This is used |
| to initialize the mips16 gp pseudo register. */ |
| #define CONST_GP_P(X) \ |
| (GET_CODE (X) == CONST \ |
| && GET_CODE (XEXP (X, 0)) == UNSPEC \ |
| && XINT (XEXP (X, 0), 1) == UNSPEC_GP) |
| |
| /* Return coprocessor number from register number. */ |
| |
| #define COPNUM_AS_CHAR_FROM_REGNUM(REGNO) \ |
| (COP0_REG_P (REGNO) ? '0' : COP2_REG_P (REGNO) ? '2' \ |
| : COP3_REG_P (REGNO) ? '3' : '?') |
| |
| |
| #define HARD_REGNO_RENAME_OK(OLD_REG, NEW_REG) \ |
| mips_hard_regno_rename_ok (OLD_REG, NEW_REG) |
| |
| /* Select a register mode required for caller save of hard regno REGNO. */ |
| #define HARD_REGNO_CALLER_SAVE_MODE(REGNO, NREGS, MODE) \ |
| mips_hard_regno_caller_save_mode (REGNO, NREGS, MODE) |
| |
| /* Register to use for pushing function arguments. */ |
| #define STACK_POINTER_REGNUM (GP_REG_FIRST + 29) |
| |
| /* These two registers don't really exist: they get eliminated to either |
| the stack or hard frame pointer. */ |
| #define ARG_POINTER_REGNUM 77 |
| #define FRAME_POINTER_REGNUM 78 |
| |
| /* $30 is not available on the mips16, so we use $17 as the frame |
| pointer. */ |
| #define HARD_FRAME_POINTER_REGNUM \ |
| (TARGET_MIPS16 ? GP_REG_FIRST + 17 : GP_REG_FIRST + 30) |
| |
| #define HARD_FRAME_POINTER_IS_FRAME_POINTER 0 |
| #define HARD_FRAME_POINTER_IS_ARG_POINTER 0 |
| |
| /* Register in which static-chain is passed to a function. */ |
| #define STATIC_CHAIN_REGNUM (GP_REG_FIRST + 15) |
| |
| /* Registers used as temporaries in prologue/epilogue code: |
| |
| - If a MIPS16 PIC function needs access to _gp, it first loads |
| the value into MIPS16_PIC_TEMP and then copies it to $gp. |
| |
| - The prologue can use MIPS_PROLOGUE_TEMP as a general temporary |
| register. The register must not conflict with MIPS16_PIC_TEMP. |
| |
| - If we aren't generating MIPS16 code, the prologue can also use |
| MIPS_PROLOGUE_TEMP2 as a general temporary register. |
| |
| - The epilogue can use MIPS_EPILOGUE_TEMP as a general temporary |
| register. |
| |
| If we're generating MIPS16 code, these registers must come from the |
| core set of 8. The prologue registers mustn't conflict with any |
| incoming arguments, the static chain pointer, or the frame pointer. |
| The epilogue temporary mustn't conflict with the return registers, |
| the PIC call register ($25), the frame pointer, the EH stack adjustment, |
| or the EH data registers. |
| |
| If we're generating interrupt handlers, we use K0 as a temporary register |
| in prologue/epilogue code. */ |
| |
| #define MIPS16_PIC_TEMP_REGNUM (GP_REG_FIRST + 2) |
| #define MIPS_PROLOGUE_TEMP_REGNUM \ |
| (cfun->machine->interrupt_handler_p ? K0_REG_NUM : GP_REG_FIRST + 3) |
| #define MIPS_PROLOGUE_TEMP2_REGNUM \ |
| (TARGET_MIPS16 \ |
| ? (gcc_unreachable (), INVALID_REGNUM) \ |
| : cfun->machine->interrupt_handler_p ? K1_REG_NUM : GP_REG_FIRST + 12) |
| #define MIPS_EPILOGUE_TEMP_REGNUM \ |
| (cfun->machine->interrupt_handler_p \ |
| ? K0_REG_NUM \ |
| : GP_REG_FIRST + (TARGET_MIPS16 ? 6 : 8)) |
| |
| #define MIPS16_PIC_TEMP gen_rtx_REG (Pmode, MIPS16_PIC_TEMP_REGNUM) |
| #define MIPS_PROLOGUE_TEMP(MODE) gen_rtx_REG (MODE, MIPS_PROLOGUE_TEMP_REGNUM) |
| #define MIPS_PROLOGUE_TEMP2(MODE) \ |
| gen_rtx_REG (MODE, MIPS_PROLOGUE_TEMP2_REGNUM) |
| #define MIPS_EPILOGUE_TEMP(MODE) gen_rtx_REG (MODE, MIPS_EPILOGUE_TEMP_REGNUM) |
| |
| /* Define this macro if it is as good or better to call a constant |
| function address than to call an address kept in a register. */ |
| #define NO_FUNCTION_CSE 1 |
| |
| /* The ABI-defined global pointer. Sometimes we use a different |
| register in leaf functions: see PIC_OFFSET_TABLE_REGNUM. */ |
| #define GLOBAL_POINTER_REGNUM (GP_REG_FIRST + 28) |
| |
| /* We normally use $28 as the global pointer. However, when generating |
| n32/64 PIC, it is better for leaf functions to use a call-clobbered |
| register instead. They can then avoid saving and restoring $28 |
| and perhaps avoid using a frame at all. |
| |
| When a leaf function uses something other than $28, mips_expand_prologue |
| will modify pic_offset_table_rtx in place. Take the register number |
| from there after reload. */ |
| #define PIC_OFFSET_TABLE_REGNUM \ |
| (reload_completed ? REGNO (pic_offset_table_rtx) : GLOBAL_POINTER_REGNUM) |
| |
| /* 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. */ |
| |
| enum reg_class |
| { |
| NO_REGS, /* no registers in set */ |
| M16_STORE_REGS, /* microMIPS store registers */ |
| M16_REGS, /* mips16 directly accessible registers */ |
| M16_SP_REGS, /* mips16 + $sp */ |
| T_REG, /* mips16 T register ($24) */ |
| M16_T_REGS, /* mips16 registers plus T register */ |
| PIC_FN_ADDR_REG, /* SVR4 PIC function address register */ |
| V1_REG, /* Register $v1 ($3) used for TLS access. */ |
| SPILL_REGS, /* All but $sp and call preserved regs are in here */ |
| LEA_REGS, /* Every GPR except $25 */ |
| GR_REGS, /* integer registers */ |
| FP_REGS, /* floating point registers */ |
| MD0_REG, /* first multiply/divide register */ |
| MD1_REG, /* second multiply/divide register */ |
| MD_REGS, /* multiply/divide registers (hi/lo) */ |
| COP0_REGS, /* generic coprocessor classes */ |
| COP2_REGS, |
| COP3_REGS, |
| ST_REGS, /* status registers (fp status) */ |
| DSP_ACC_REGS, /* DSP accumulator registers */ |
| ACC_REGS, /* Hi/Lo and DSP accumulator registers */ |
| FRAME_REGS, /* $arg and $frame */ |
| GR_AND_MD0_REGS, /* union classes */ |
| GR_AND_MD1_REGS, |
| GR_AND_MD_REGS, |
| GR_AND_ACC_REGS, |
| ALL_REGS, /* all registers */ |
| LIM_REG_CLASSES /* max value + 1 */ |
| }; |
| |
| #define N_REG_CLASSES (int) LIM_REG_CLASSES |
| |
| #define GENERAL_REGS GR_REGS |
| |
| /* An initializer containing the names of the register classes as C |
| string constants. These names are used in writing some of the |
| debugging dumps. */ |
| |
| #define REG_CLASS_NAMES \ |
| { \ |
| "NO_REGS", \ |
| "M16_STORE_REGS", \ |
| "M16_REGS", \ |
| "M16_SP_REGS", \ |
| "T_REG", \ |
| "M16_T_REGS", \ |
| "PIC_FN_ADDR_REG", \ |
| "V1_REG", \ |
| "SPILL_REGS", \ |
| "LEA_REGS", \ |
| "GR_REGS", \ |
| "FP_REGS", \ |
| "MD0_REG", \ |
| "MD1_REG", \ |
| "MD_REGS", \ |
| /* coprocessor registers */ \ |
| "COP0_REGS", \ |
| "COP2_REGS", \ |
| "COP3_REGS", \ |
| "ST_REGS", \ |
| "DSP_ACC_REGS", \ |
| "ACC_REGS", \ |
| "FRAME_REGS", \ |
| "GR_AND_MD0_REGS", \ |
| "GR_AND_MD1_REGS", \ |
| "GR_AND_MD_REGS", \ |
| "GR_AND_ACC_REGS", \ |
| "ALL_REGS" \ |
| } |
| |
| /* An initializer containing the contents of the register classes, |
| as integers which are bit masks. The Nth integer specifies the |
| contents of class N. The way the integer MASK is interpreted is |
| that register R is in the class if `MASK & (1 << R)' is 1. |
| |
| When the machine has more than 32 registers, an integer does not |
| suffice. Then the integers are replaced by sub-initializers, |
| braced groupings containing several integers. Each |
| sub-initializer must be suitable as an initializer for the type |
| `HARD_REG_SET' which is defined in `hard-reg-set.h'. */ |
| |
| #define REG_CLASS_CONTENTS \ |
| { \ |
| { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, /* NO_REGS */ \ |
| { 0x000200fc, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, /* M16_STORE_REGS */ \ |
| { 0x000300fc, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, /* M16_REGS */ \ |
| { 0x200300fc, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, /* M16_SP_REGS */ \ |
| { 0x01000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, /* T_REG */ \ |
| { 0x010300fc, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, /* M16_T_REGS */ \ |
| { 0x02000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, /* PIC_FN_ADDR_REG */ \ |
| { 0x00000008, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, /* V1_REG */ \ |
| { 0x0303fffc, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, /* SPILL_REGS */ \ |
| { 0xfdffffff, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, /* LEA_REGS */ \ |
| { 0xffffffff, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, /* GR_REGS */ \ |
| { 0x00000000, 0xffffffff, 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, /* FP_REGS */ \ |
| { 0x00000000, 0x00000000, 0x00000001, 0x00000000, 0x00000000, 0x00000000 }, /* MD0_REG */ \ |
| { 0x00000000, 0x00000000, 0x00000002, 0x00000000, 0x00000000, 0x00000000 }, /* MD1_REG */ \ |
| { 0x00000000, 0x00000000, 0x00000003, 0x00000000, 0x00000000, 0x00000000 }, /* MD_REGS */ \ |
| { 0x00000000, 0x00000000, 0xffff0000, 0x0000ffff, 0x00000000, 0x00000000 }, /* COP0_REGS */ \ |
| { 0x00000000, 0x00000000, 0x00000000, 0xffff0000, 0x0000ffff, 0x00000000 }, /* COP2_REGS */ \ |
| { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0xffff0000, 0x0000ffff }, /* COP3_REGS */ \ |
| { 0x00000000, 0x00000000, 0x000007f8, 0x00000000, 0x00000000, 0x00000000 }, /* ST_REGS */ \ |
| { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x003f0000 }, /* DSP_ACC_REGS */ \ |
| { 0x00000000, 0x00000000, 0x00000003, 0x00000000, 0x00000000, 0x003f0000 }, /* ACC_REGS */ \ |
| { 0x00000000, 0x00000000, 0x00006000, 0x00000000, 0x00000000, 0x00000000 }, /* FRAME_REGS */ \ |
| { 0xffffffff, 0x00000000, 0x00000001, 0x00000000, 0x00000000, 0x00000000 }, /* GR_AND_MD0_REGS */ \ |
| { 0xffffffff, 0x00000000, 0x00000002, 0x00000000, 0x00000000, 0x00000000 }, /* GR_AND_MD1_REGS */ \ |
| { 0xffffffff, 0x00000000, 0x00000003, 0x00000000, 0x00000000, 0x00000000 }, /* GR_AND_MD_REGS */ \ |
| { 0xffffffff, 0x00000000, 0x00000003, 0x00000000, 0x00000000, 0x003f0000 }, /* GR_AND_ACC_REGS */ \ |
| { 0xffffffff, 0xffffffff, 0xffff67ff, 0xffffffff, 0xffffffff, 0x0fffffff } /* ALL_REGS */ \ |
| } |
| |
| |
| /* A C expression whose value is a register class containing hard |
| register REGNO. In general there is more that one such class; |
| choose a class which is "minimal", meaning that no smaller class |
| also contains the register. */ |
| |
| #define REGNO_REG_CLASS(REGNO) mips_regno_to_class[ (REGNO) ] |
| |
| /* A macro whose definition is the name of the class to which a |
| valid base register must belong. A base register is one used in |
| an address which is the register value plus a displacement. */ |
| |
| #define BASE_REG_CLASS (TARGET_MIPS16 ? M16_SP_REGS : GR_REGS) |
| |
| /* A macro whose definition is the name of the class to which a |
| valid index register must belong. An index register is one used |
| in an address where its value is either multiplied by a scale |
| factor or added to another register (as well as added to a |
| displacement). */ |
| |
| #define INDEX_REG_CLASS NO_REGS |
| |
| /* We generally want to put call-clobbered registers ahead of |
| call-saved ones. (IRA expects this.) */ |
| |
| #define REG_ALLOC_ORDER \ |
| { /* Accumulator registers. When GPRs and accumulators have equal \ |
| cost, we generally prefer to use accumulators. For example, \ |
| a division of multiplication result is better allocated to LO, \ |
| so that we put the MFLO at the point of use instead of at the \ |
| point of definition. It's also needed if we're to take advantage \ |
| of the extra accumulators available with -mdspr2. In some cases, \ |
| it can also help to reduce register pressure. */ \ |
| 64, 65,176,177,178,179,180,181, \ |
| /* Call-clobbered GPRs. */ \ |
| 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, \ |
| 24, 25, 31, \ |
| /* The global pointer. This is call-clobbered for o32 and o64 \ |
| abicalls, call-saved for n32 and n64 abicalls, and a program \ |
| invariant otherwise. Putting it between the call-clobbered \ |
| and call-saved registers should cope with all eventualities. */ \ |
| 28, \ |
| /* Call-saved GPRs. */ \ |
| 16, 17, 18, 19, 20, 21, 22, 23, 30, \ |
| /* GPRs that can never be exposed to the register allocator. */ \ |
| 0, 26, 27, 29, \ |
| /* Call-clobbered FPRs. */ \ |
| 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, \ |
| 48, 49, 50, 51, \ |
| /* FPRs that are usually call-saved. The odd ones are actually \ |
| call-clobbered for n32, but listing them ahead of the even \ |
| registers might encourage the register allocator to fragment \ |
| the available FPR pairs. We need paired FPRs to store long \ |
| doubles, so it isn't clear that using a different order \ |
| for n32 would be a win. */ \ |
| 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, \ |
| /* None of the remaining classes have defined call-saved \ |
| registers. */ \ |
| 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, \ |
| 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, \ |
| 96, 97, 98, 99, 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, \ |
| 128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143, \ |
| 144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159, \ |
| 160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175, \ |
| 182,183,184,185,186,187 \ |
| } |
| |
| /* True if VALUE is an unsigned 6-bit number. */ |
| |
| #define UIMM6_OPERAND(VALUE) \ |
| (((VALUE) & ~(unsigned HOST_WIDE_INT) 0x3f) == 0) |
| |
| /* True if VALUE is a signed 10-bit number. */ |
| |
| #define IMM10_OPERAND(VALUE) \ |
| ((unsigned HOST_WIDE_INT) (VALUE) + 0x200 < 0x400) |
| |
| /* True if VALUE is a signed 16-bit number. */ |
| |
| #define SMALL_OPERAND(VALUE) \ |
| ((unsigned HOST_WIDE_INT) (VALUE) + 0x8000 < 0x10000) |
| |
| /* True if VALUE is an unsigned 16-bit number. */ |
| |
| #define SMALL_OPERAND_UNSIGNED(VALUE) \ |
| (((VALUE) & ~(unsigned HOST_WIDE_INT) 0xffff) == 0) |
| |
| /* True if VALUE can be loaded into a register using LUI. */ |
| |
| #define LUI_OPERAND(VALUE) \ |
| (((VALUE) | 0x7fff0000) == 0x7fff0000 \ |
| || ((VALUE) | 0x7fff0000) + 0x10000 == 0) |
| |
| /* Return a value X with the low 16 bits clear, and such that |
| VALUE - X is a signed 16-bit value. */ |
| |
| #define CONST_HIGH_PART(VALUE) \ |
| (((VALUE) + 0x8000) & ~(unsigned HOST_WIDE_INT) 0xffff) |
| |
| #define CONST_LOW_PART(VALUE) \ |
| ((VALUE) - CONST_HIGH_PART (VALUE)) |
| |
| #define SMALL_INT(X) SMALL_OPERAND (INTVAL (X)) |
| #define SMALL_INT_UNSIGNED(X) SMALL_OPERAND_UNSIGNED (INTVAL (X)) |
| #define LUI_INT(X) LUI_OPERAND (INTVAL (X)) |
| #define UMIPS_12BIT_OFFSET_P(OFFSET) (IN_RANGE (OFFSET, -2048, 2047)) |
| #define MIPS_9BIT_OFFSET_P(OFFSET) (IN_RANGE (OFFSET, -256, 255)) |
| |
| /* The HI and LO registers can only be reloaded via the general |
| registers. Condition code registers can only be loaded to the |
| general registers, and from the floating point registers. */ |
| |
| #define SECONDARY_INPUT_RELOAD_CLASS(CLASS, MODE, X) \ |
| mips_secondary_reload_class (CLASS, MODE, X, true) |
| #define SECONDARY_OUTPUT_RELOAD_CLASS(CLASS, MODE, X) \ |
| mips_secondary_reload_class (CLASS, MODE, X, false) |
| |
| /* Return the maximum number of consecutive registers |
| needed to represent mode MODE in a register of class CLASS. */ |
| |
| #define CLASS_MAX_NREGS(CLASS, MODE) mips_class_max_nregs (CLASS, MODE) |
| |
| /* Stack layout; function entry, exit and calling. */ |
| |
| #define STACK_GROWS_DOWNWARD 1 |
| |
| #define FRAME_GROWS_DOWNWARD (flag_stack_protect != 0 \ |
| || (flag_sanitize & SANITIZE_ADDRESS) != 0) |
| |
| /* Size of the area allocated in the frame to save the GP. */ |
| |
| #define MIPS_GP_SAVE_AREA_SIZE \ |
| (TARGET_CALL_CLOBBERED_GP ? MIPS_STACK_ALIGN (UNITS_PER_WORD) : 0) |
| |
| #define RETURN_ADDR_RTX mips_return_addr |
| |
| /* Mask off the MIPS16 ISA bit in unwind addresses. |
| |
| The reason for this is a little subtle. When unwinding a call, |
| we are given the call's return address, which on most targets |
| is the address of the following instruction. However, what we |
| actually want to find is the EH region for the call itself. |
| The target-independent unwind code therefore searches for "RA - 1". |
| |
| In the MIPS16 case, RA is always an odd-valued (ISA-encoded) address. |
| RA - 1 is therefore the real (even-valued) start of the return |
| instruction. EH region labels are usually odd-valued MIPS16 symbols |
| too, so a search for an even address within a MIPS16 region would |
| usually work. |
| |
| However, there is an exception. If the end of an EH region is also |
| the end of a function, the end label is allowed to be even. This is |
| necessary because a following non-MIPS16 function may also need EH |
| information for its first instruction. |
| |
| Thus a MIPS16 region may be terminated by an ISA-encoded or a |
| non-ISA-encoded address. This probably isn't ideal, but it is |
| the traditional (legacy) behavior. It is therefore only safe |
| to search MIPS EH regions for an _odd-valued_ address. |
| |
| Masking off the ISA bit means that the target-independent code |
| will search for "(RA & -2) - 1", which is guaranteed to be odd. */ |
| #define MASK_RETURN_ADDR GEN_INT (-2) |
| |
| |
| /* Similarly, don't use the least-significant bit to tell pointers to |
| code from vtable index. */ |
| |
| #define TARGET_PTRMEMFUNC_VBIT_LOCATION ptrmemfunc_vbit_in_delta |
| |
| /* The eliminations to $17 are only used for mips16 code. See the |
| definition of HARD_FRAME_POINTER_REGNUM. */ |
| |
| #define ELIMINABLE_REGS \ |
| {{ ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ |
| { ARG_POINTER_REGNUM, GP_REG_FIRST + 30}, \ |
| { ARG_POINTER_REGNUM, GP_REG_FIRST + 17}, \ |
| { FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ |
| { FRAME_POINTER_REGNUM, GP_REG_FIRST + 30}, \ |
| { FRAME_POINTER_REGNUM, GP_REG_FIRST + 17}} |
| |
| #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \ |
| (OFFSET) = mips_initial_elimination_offset ((FROM), (TO)) |
| |
| /* Allocate stack space for arguments at the beginning of each function. */ |
| #define ACCUMULATE_OUTGOING_ARGS 1 |
| |
| /* The argument pointer always points to the first argument. */ |
| #define FIRST_PARM_OFFSET(FNDECL) 0 |
| |
| /* o32 and o64 reserve stack space for all argument registers. */ |
| #define REG_PARM_STACK_SPACE(FNDECL) \ |
| (TARGET_OLDABI \ |
| ? (MAX_ARGS_IN_REGISTERS * UNITS_PER_WORD) \ |
| : 0) |
| |
| /* Define this if it is the responsibility of the caller to |
| allocate the area reserved for arguments passed in registers. |
| If `ACCUMULATE_OUTGOING_ARGS' is also defined, the only effect |
| of this macro is to determine whether the space is included in |
| `crtl->outgoing_args_size'. */ |
| #define OUTGOING_REG_PARM_STACK_SPACE(FNTYPE) 1 |
| |
| #define STACK_BOUNDARY (TARGET_NEWABI ? 128 : 64) |
| |
| /* Symbolic macros for the registers used to return integer and floating |
| point values. */ |
| |
| #define GP_RETURN (GP_REG_FIRST + 2) |
| #define FP_RETURN ((TARGET_SOFT_FLOAT) ? GP_RETURN : (FP_REG_FIRST + 0)) |
| |
| #define MAX_ARGS_IN_REGISTERS (TARGET_OLDABI ? 4 : 8) |
| |
| /* Symbolic macros for the first/last argument registers. */ |
| |
| #define GP_ARG_FIRST (GP_REG_FIRST + 4) |
| #define GP_ARG_LAST (GP_ARG_FIRST + MAX_ARGS_IN_REGISTERS - 1) |
| #define FP_ARG_FIRST (FP_REG_FIRST + 12) |
| #define FP_ARG_LAST (FP_ARG_FIRST + MAX_ARGS_IN_REGISTERS - 1) |
| |
| /* True if MODE is vector and supported in a MSA vector register. */ |
| #define MSA_SUPPORTED_MODE_P(MODE) \ |
| (ISA_HAS_MSA \ |
| && GET_MODE_SIZE (MODE) == UNITS_PER_MSA_REG \ |
| && (GET_MODE_CLASS (MODE) == MODE_VECTOR_INT \ |
| || GET_MODE_CLASS (MODE) == MODE_VECTOR_FLOAT)) |
| |
| /* Temporary register that is used when restoring $gp after a call. $4 and $5 |
| are used for returning complex double values in soft-float code, so $6 is the |
| first suitable candidate for TARGET_MIPS16. For !TARGET_MIPS16 we can use |
| $gp itself as the temporary. */ |
| #define POST_CALL_TMP_REG \ |
| (TARGET_MIPS16 ? GP_ARG_FIRST + 2 : PIC_OFFSET_TABLE_REGNUM) |
| |
| /* 1 if N is a possible register number for function argument passing. |
| We have no FP argument registers when soft-float. Special handling |
| is required for O32 where only even numbered registers are used for |
| O32-FPXX and O32-FP64. */ |
| |
| #define FUNCTION_ARG_REGNO_P(N) \ |
| ((IN_RANGE((N), GP_ARG_FIRST, GP_ARG_LAST) \ |
| || (IN_RANGE((N), FP_ARG_FIRST, FP_ARG_LAST) \ |
| && (mips_abi != ABI_32 \ |
| || TARGET_FLOAT32 \ |
| || ((N) % 2 == 0)))) \ |
| && !fixed_regs[N]) |
| |
| /* This structure has to cope with two different argument allocation |
| schemes. Most MIPS ABIs view the arguments as a structure, of which |
| the first N words go in registers and the rest go on the stack. If I |
| < N, the Ith word might go in Ith integer argument register or in a |
| floating-point register. For these ABIs, we only need to remember |
| the offset of the current argument into the structure. |
| |
| The EABI instead allocates the integer and floating-point arguments |
| separately. The first N words of FP arguments go in FP registers, |
| the rest go on the stack. Likewise, the first N words of the other |
| arguments go in integer registers, and the rest go on the stack. We |
| need to maintain three counts: the number of integer registers used, |
| the number of floating-point registers used, and the number of words |
| passed on the stack. |
| |
| We could keep separate information for the two ABIs (a word count for |
| the standard ABIs, and three separate counts for the EABI). But it |
| seems simpler to view the standard ABIs as forms of EABI that do not |
| allocate floating-point registers. |
| |
| So for the standard ABIs, the first N words are allocated to integer |
| registers, and mips_function_arg decides on an argument-by-argument |
| basis whether that argument should really go in an integer register, |
| or in a floating-point one. */ |
| |
| typedef struct mips_args { |
| /* Always true for varargs functions. Otherwise true if at least |
| one argument has been passed in an integer register. */ |
| int gp_reg_found; |
| |
| /* The number of arguments seen so far. */ |
| unsigned int arg_number; |
| |
| /* The number of integer registers used so far. For all ABIs except |
| EABI, this is the number of words that have been added to the |
| argument structure, limited to MAX_ARGS_IN_REGISTERS. */ |
| unsigned int num_gprs; |
| |
| /* For EABI, the number of floating-point registers used so far. */ |
| unsigned int num_fprs; |
| |
| /* The number of words passed on the stack. */ |
| unsigned int stack_words; |
| |
| /* On the mips16, we need to keep track of which floating point |
| arguments were passed in general registers, but would have been |
| passed in the FP regs if this were a 32-bit function, so that we |
| can move them to the FP regs if we wind up calling a 32-bit |
| function. We record this information in fp_code, encoded in base |
| four. A zero digit means no floating point argument, a one digit |
| means an SFmode argument, and a two digit means a DFmode argument, |
| and a three digit is not used. The low order digit is the first |
| argument. Thus 6 == 1 * 4 + 2 means a DFmode argument followed by |
| an SFmode argument. ??? A more sophisticated approach will be |
| needed if MIPS_ABI != ABI_32. */ |
| int fp_code; |
| |
| /* True if the function has a prototype. */ |
| int prototype; |
| } CUMULATIVE_ARGS; |
| |
| /* 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. */ |
| |
| #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, INDIRECT, N_NAMED_ARGS) \ |
| mips_init_cumulative_args (&CUM, FNTYPE) |
| |
| #define BLOCK_REG_PADDING(MODE, TYPE, FIRST) \ |
| (mips_pad_reg_upward (MODE, TYPE) ? PAD_UPWARD : PAD_DOWNWARD) |
| |
| /* True if using EABI and varargs can be passed in floating-point |
| registers. Under these conditions, we need a more complex form |
| of va_list, which tracks GPR, FPR and stack arguments separately. */ |
| #define EABI_FLOAT_VARARGS_P \ |
| (mips_abi == ABI_EABI && UNITS_PER_FPVALUE >= UNITS_PER_DOUBLE) |
| |
| |
| #define EPILOGUE_USES(REGNO) mips_epilogue_uses (REGNO) |
| |
| /* Treat LOC as a byte offset from the stack pointer and round it up |
| to the next fully-aligned offset. */ |
| #define MIPS_STACK_ALIGN(LOC) \ |
| (TARGET_NEWABI ? ROUND_UP ((LOC), 16) : ROUND_UP ((LOC), 8)) |
| |
| |
| /* Output assembler code to FILE to increment profiler label # LABELNO |
| for profiling a function entry. */ |
| |
| #define FUNCTION_PROFILER(FILE, LABELNO) mips_function_profiler ((FILE)) |
| |
| /* The profiler preserves all interesting registers, including $31. */ |
| #define MIPS_SAVE_REG_FOR_PROFILING_P(REGNO) false |
| |
| /* No mips port has ever used the profiler counter word, so don't emit it |
| or the label for it. */ |
| |
| #define NO_PROFILE_COUNTERS 1 |
| |
| /* 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 |
| |
| |
| /* Trampolines are a block of code followed by two pointers. */ |
| |
| #define TRAMPOLINE_SIZE \ |
| (mips_trampoline_code_size () + GET_MODE_SIZE (ptr_mode) * 2) |
| |
| /* Forcing a 64-bit alignment for 32-bit targets allows us to load two |
| pointers from a single LUI base. */ |
| |
| #define TRAMPOLINE_ALIGNMENT 64 |
| |
| /* mips_trampoline_init calls this library function to flush |
| program and data caches. */ |
| |
| #ifndef CACHE_FLUSH_FUNC |
| #define CACHE_FLUSH_FUNC "_flush_cache" |
| #endif |
| |
| #define MIPS_ICACHE_SYNC(ADDR, SIZE) \ |
| /* Flush both caches. We need to flush the data cache in case \ |
| the system has a write-back cache. */ \ |
| emit_library_call (gen_rtx_SYMBOL_REF (Pmode, mips_cache_flush_func), \ |
| LCT_NORMAL, VOIDmode, ADDR, Pmode, SIZE, Pmode, \ |
| GEN_INT (3), TYPE_MODE (integer_type_node)) |
| |
| |
| /* Addressing modes, and classification of registers for them. */ |
| |
| #define REGNO_OK_FOR_INDEX_P(REGNO) 0 |
| #define REGNO_MODE_OK_FOR_BASE_P(REGNO, MODE) \ |
| mips_regno_mode_ok_for_base_p (REGNO, MODE, 1) |
| |
| /* Maximum number of registers that can appear in a valid memory address. */ |
| |
| #define MAX_REGS_PER_ADDRESS 1 |
| |
| /* Check for constness inline but use mips_legitimate_address_p |
| to check whether a constant really is an address. */ |
| |
| #define CONSTANT_ADDRESS_P(X) \ |
| (CONSTANT_P (X) && memory_address_p (SImode, X)) |
| |
| /* This handles the magic '..CURRENT_FUNCTION' symbol, which means |
| 'the start of the function that this code is output in'. */ |
| |
| #define ASM_OUTPUT_LABELREF(FILE,NAME) \ |
| do { \ |
| if (strcmp (NAME, "..CURRENT_FUNCTION") == 0) \ |
| asm_fprintf ((FILE), "%U%s", \ |
| XSTR (XEXP (DECL_RTL (current_function_decl), \ |
| 0), 0)); \ |
| else \ |
| asm_fprintf ((FILE), "%U%s", (NAME)); \ |
| } while (0) |
| |
| /* Flag to mark a function decl symbol that requires a long call. */ |
| #define SYMBOL_FLAG_LONG_CALL (SYMBOL_FLAG_MACH_DEP << 0) |
| #define SYMBOL_REF_LONG_CALL_P(X) \ |
| ((SYMBOL_REF_FLAGS (X) & SYMBOL_FLAG_LONG_CALL) != 0) |
| |
| /* This flag marks functions that cannot be lazily bound. */ |
| #define SYMBOL_FLAG_BIND_NOW (SYMBOL_FLAG_MACH_DEP << 1) |
| #define SYMBOL_REF_BIND_NOW_P(RTX) \ |
| ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_BIND_NOW) != 0) |
| |
| /* True if we're generating a form of MIPS16 code in which jump tables |
| are stored in the text section and encoded as 16-bit PC-relative |
| offsets. This is only possible when general text loads are allowed, |
| since the table access itself will be an "lh" instruction. If the |
| PC-relative offsets grow too large, 32-bit offsets are used instead. */ |
| #define TARGET_MIPS16_SHORT_JUMP_TABLES TARGET_MIPS16_TEXT_LOADS |
| |
| #define JUMP_TABLES_IN_TEXT_SECTION TARGET_MIPS16_SHORT_JUMP_TABLES |
| |
| #define CASE_VECTOR_MODE (TARGET_MIPS16_SHORT_JUMP_TABLES ? SImode : ptr_mode) |
| |
| /* Only use short offsets if their range will not overflow. */ |
| #define CASE_VECTOR_SHORTEN_MODE(MIN, MAX, BODY) \ |
| (!TARGET_MIPS16_SHORT_JUMP_TABLES ? ptr_mode \ |
| : ((MIN) >= -32768 && (MAX) < 32768) ? HImode \ |
| : SImode) |
| |
| #define CASE_VECTOR_PC_RELATIVE TARGET_MIPS16_SHORT_JUMP_TABLES |
| |
| /* Define this as 1 if `char' should by default be signed; else as 0. */ |
| #ifndef DEFAULT_SIGNED_CHAR |
| #define DEFAULT_SIGNED_CHAR 1 |
| #endif |
| |
| /* Although LDC1 and SDC1 provide 64-bit moves on 32-bit targets, |
| we generally don't want to use them for copying arbitrary data. |
| A single N-word move is usually the same cost as N single-word moves. */ |
| #define MOVE_MAX UNITS_PER_WORD |
| /* We don't modify it for MSA as it is only used by the classic reload. */ |
| #define MAX_MOVE_MAX 8 |
| |
| /* Define this macro as a C expression which is nonzero if |
| accessing less than a word of memory (i.e. a `char' or a |
| `short') is no faster than accessing a word of memory, i.e., if |
| such access require more than one instruction or if there is no |
| difference in cost between byte and (aligned) word loads. |
| |
| On RISC machines, it tends to generate better code to define |
| this as 1, since it avoids making a QI or HI mode register. |
| |
| But, generating word accesses for -mips16 is generally bad as shifts |
| (often extended) would be needed for byte accesses. */ |
| #define SLOW_BYTE_ACCESS (!TARGET_MIPS16) |
| |
| /* Standard MIPS integer shifts truncate the shift amount to the |
| width of the shifted operand. However, Loongson MMI shifts |
| do not truncate the shift amount at all. */ |
| #define SHIFT_COUNT_TRUNCATED (!TARGET_LOONGSON_MMI) |
| |
| |
| /* Specify the machine mode that pointers have. |
| After generation of rtl, the compiler makes no further distinction |
| between pointers and any other objects of this machine mode. */ |
| |
| #ifndef Pmode |
| #define Pmode (TARGET_64BIT && TARGET_LONG64 ? DImode : SImode) |
| #endif |
| |
| /* Give call MEMs SImode since it is the "most permissive" mode |
| for both 32-bit and 64-bit targets. */ |
| |
| #define FUNCTION_MODE SImode |
| |
| |
| /* We allocate $fcc registers by hand and can't cope with moves of |
| CCmode registers to and from pseudos (or memory). */ |
| #define AVOID_CCMODE_COPIES |
| |
| /* 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) mips_branch_cost |
| #define LOGICAL_OP_NON_SHORT_CIRCUIT 0 |
| |
| /* The MIPS port has several functions that return an instruction count. |
| Multiplying the count by this value gives the number of bytes that |
| the instructions occupy. */ |
| #define BASE_INSN_LENGTH (TARGET_MIPS16 ? 2 : 4) |
| |
| /* The length of a NOP in bytes. */ |
| #define NOP_INSN_LENGTH (TARGET_COMPRESSION ? 2 : 4) |
| |
| /* If defined, modifies the length assigned to instruction INSN as a |
| function of the context in which it is used. LENGTH is an lvalue |
| that contains the initially computed length of the insn and should |
| be updated with the correct length of the insn. */ |
| #define ADJUST_INSN_LENGTH(INSN, LENGTH) \ |
| ((LENGTH) = mips_adjust_insn_length ((INSN), (LENGTH))) |
| |
| /* Return the asm template for a non-MIPS16 conditional branch instruction. |
| OPCODE is the opcode's mnemonic and OPERANDS is the asm template for |
| its operands. */ |
| #define MIPS_BRANCH(OPCODE, OPERANDS) \ |
| "%*" OPCODE "%?\t" OPERANDS "%/" |
| |
| #define MIPS_BRANCH_C(OPCODE, OPERANDS) \ |
| "%*" OPCODE "%:\t" OPERANDS |
| |
| /* Return an asm string that forces INSN to be treated as an absolute |
| J or JAL instruction instead of an assembler macro. */ |
| #define MIPS_ABSOLUTE_JUMP(INSN) \ |
| (TARGET_ABICALLS_PIC2 \ |
| ? ".option\tpic0\n\t" INSN "\n\t.option\tpic2" \ |
| : INSN) |
| |
| |
| /* Control the assembler format that we output. */ |
| |
| /* Output to assembler file text saying following lines |
| may contain character constants, extra white space, comments, etc. */ |
| |
| #ifndef ASM_APP_ON |
| #define ASM_APP_ON " #APP\n" |
| #endif |
| |
| /* Output to assembler file text saying following lines |
| no longer contain unusual constructs. */ |
| |
| #ifndef ASM_APP_OFF |
| #define ASM_APP_OFF " #NO_APP\n" |
| #endif |
| |
| #define REGISTER_NAMES \ |
| { "$0", "$1", "$2", "$3", "$4", "$5", "$6", "$7", \ |
| "$8", "$9", "$10", "$11", "$12", "$13", "$14", "$15", \ |
| "$16", "$17", "$18", "$19", "$20", "$21", "$22", "$23", \ |
| "$24", "$25", "$26", "$27", "$28", "$sp", "$fp", "$31", \ |
| "$f0", "$f1", "$f2", "$f3", "$f4", "$f5", "$f6", "$f7", \ |
| "$f8", "$f9", "$f10", "$f11", "$f12", "$f13", "$f14", "$f15", \ |
| "$f16", "$f17", "$f18", "$f19", "$f20", "$f21", "$f22", "$f23", \ |
| "$f24", "$f25", "$f26", "$f27", "$f28", "$f29", "$f30", "$f31", \ |
| "hi", "lo", "", "$fcc0","$fcc1","$fcc2","$fcc3","$fcc4", \ |
| "$fcc5","$fcc6","$fcc7","", "$cprestore", "$arg", "$frame", "$fakec", \ |
| "$c0r0", "$c0r1", "$c0r2", "$c0r3", "$c0r4", "$c0r5", "$c0r6", "$c0r7", \ |
| "$c0r8", "$c0r9", "$c0r10","$c0r11","$c0r12","$c0r13","$c0r14","$c0r15", \ |
| "$c0r16","$c0r17","$c0r18","$c0r19","$c0r20","$c0r21","$c0r22","$c0r23", \ |
| "$c0r24","$c0r25","$c0r26","$c0r27","$c0r28","$c0r29","$c0r30","$c0r31", \ |
| "$c2r0", "$c2r1", "$c2r2", "$c2r3", "$c2r4", "$c2r5", "$c2r6", "$c2r7", \ |
| "$c2r8", "$c2r9", "$c2r10","$c2r11","$c2r12","$c2r13","$c2r14","$c2r15", \ |
| "$c2r16","$c2r17","$c2r18","$c2r19","$c2r20","$c2r21","$c2r22","$c2r23", \ |
| "$c2r24","$c2r25","$c2r26","$c2r27","$c2r28","$c2r29","$c2r30","$c2r31", \ |
| "$c3r0", "$c3r1", "$c3r2", "$c3r3", "$c3r4", "$c3r5", "$c3r6", "$c3r7", \ |
| "$c3r8", "$c3r9", "$c3r10","$c3r11","$c3r12","$c3r13","$c3r14","$c3r15", \ |
| "$c3r16","$c3r17","$c3r18","$c3r19","$c3r20","$c3r21","$c3r22","$c3r23", \ |
| "$c3r24","$c3r25","$c3r26","$c3r27","$c3r28","$c3r29","$c3r30","$c3r31", \ |
| "$ac1hi","$ac1lo","$ac2hi","$ac2lo","$ac3hi","$ac3lo","$dsp_po","$dsp_sc", \ |
| "$dsp_ca","$dsp_ou","$dsp_cc","$dsp_ef" } |
| |
| /* List the "software" names for each register. Also list the numerical |
| names for $fp and $sp. */ |
| |
| #define ADDITIONAL_REGISTER_NAMES \ |
| { \ |
| { "$29", 29 + GP_REG_FIRST }, \ |
| { "$30", 30 + GP_REG_FIRST }, \ |
| { "at", 1 + GP_REG_FIRST }, \ |
| { "v0", 2 + GP_REG_FIRST }, \ |
| { "v1", 3 + GP_REG_FIRST }, \ |
| { "a0", 4 + GP_REG_FIRST }, \ |
| { "a1", 5 + GP_REG_FIRST }, \ |
| { "a2", 6 + GP_REG_FIRST }, \ |
| { "a3", 7 + GP_REG_FIRST }, \ |
| { "t0", 8 + GP_REG_FIRST }, \ |
| { "t1", 9 + GP_REG_FIRST }, \ |
| { "t2", 10 + GP_REG_FIRST }, \ |
| { "t3", 11 + GP_REG_FIRST }, \ |
| { "t4", 12 + GP_REG_FIRST }, \ |
| { "t5", 13 + GP_REG_FIRST }, \ |
| { "t6", 14 + GP_REG_FIRST }, \ |
| { "t7", 15 + GP_REG_FIRST }, \ |
| { "s0", 16 + GP_REG_FIRST }, \ |
| { "s1", 17 + GP_REG_FIRST }, \ |
| { "s2", 18 + GP_REG_FIRST }, \ |
| { "s3", 19 + GP_REG_FIRST }, \ |
| { "s4", 20 + GP_REG_FIRST }, \ |
| { "s5", 21 + GP_REG_FIRST }, \ |
| { "s6", 22 + GP_REG_FIRST }, \ |
| { "s7", 23 + GP_REG_FIRST }, \ |
| { "t8", 24 + GP_REG_FIRST }, \ |
| { "t9", 25 + GP_REG_FIRST }, \ |
| { "k0", 26 + GP_REG_FIRST }, \ |
| { "k1", 27 + GP_REG_FIRST }, \ |
| { "gp", 28 + GP_REG_FIRST }, \ |
| { "sp", 29 + GP_REG_FIRST }, \ |
| { "fp", 30 + GP_REG_FIRST }, \ |
| { "ra", 31 + GP_REG_FIRST }, \ |
| { "$w0", 0 + FP_REG_FIRST }, \ |
| { "$w1", 1 + FP_REG_FIRST }, \ |
| { "$w2", 2 + FP_REG_FIRST }, \ |
| { "$w3", 3 + FP_REG_FIRST }, \ |
| { "$w4", 4 + FP_REG_FIRST }, \ |
| { "$w5", 5 + FP_REG_FIRST }, \ |
| { "$w6", 6 + FP_REG_FIRST }, \ |
| { "$w7", 7 + FP_REG_FIRST }, \ |
| { "$w8", 8 + FP_REG_FIRST }, \ |
| { "$w9", 9 + FP_REG_FIRST }, \ |
| { "$w10", 10 + FP_REG_FIRST }, \ |
| { "$w11", 11 + FP_REG_FIRST }, \ |
| { "$w12", 12 + FP_REG_FIRST }, \ |
| { "$w13", 13 + FP_REG_FIRST }, \ |
| { "$w14", 14 + FP_REG_FIRST }, \ |
| { "$w15", 15 + FP_REG_FIRST }, \ |
| { "$w16", 16 + FP_REG_FIRST }, \ |
| { "$w17", 17 + FP_REG_FIRST }, \ |
| { "$w18", 18 + FP_REG_FIRST }, \ |
| { "$w19", 19 + FP_REG_FIRST }, \ |
| { "$w20", 20 + FP_REG_FIRST }, \ |
| { "$w21", 21 + FP_REG_FIRST }, \ |
| { "$w22", 22 + FP_REG_FIRST }, \ |
| { "$w23", 23 + FP_REG_FIRST }, \ |
| { "$w24", 24 + FP_REG_FIRST }, \ |
| { "$w25", 25 + FP_REG_FIRST }, \ |
| { "$w26", 26 + FP_REG_FIRST }, \ |
| { "$w27", 27 + FP_REG_FIRST }, \ |
| { "$w28", 28 + FP_REG_FIRST }, \ |
| { "$w29", 29 + FP_REG_FIRST }, \ |
| { "$w30", 30 + FP_REG_FIRST }, \ |
| { "$w31", 31 + FP_REG_FIRST } \ |
| } |
| |
| #define DBR_OUTPUT_SEQEND(STREAM) \ |
| do \ |
| { \ |
| /* Undo the effect of '%*'. */ \ |
| mips_pop_asm_switch (&mips_nomacro); \ |
| mips_pop_asm_switch (&mips_noreorder); \ |
| /* Emit a blank line after the delay slot for emphasis. */ \ |
| fputs ("\n", STREAM); \ |
| } \ |
| while (0) |
| |
| /* The MIPS implementation uses some labels for its own purpose. The |
| following lists what labels are created, and are all formed by the |
| pattern $L[a-z].*. The machine independent portion of GCC creates |
| labels matching: $L[A-Z][0-9]+ and $L[0-9]+. |
| |
| LM[0-9]+ Silicon Graphics/ECOFF stabs label before each stmt. |
| $Lb[0-9]+ Begin blocks for MIPS debug support |
| $Lc[0-9]+ Label for use in s<xx> operation. |
| $Le[0-9]+ End blocks for MIPS debug support */ |
| |
| #undef ASM_DECLARE_OBJECT_NAME |
| #define ASM_DECLARE_OBJECT_NAME(STREAM, NAME, DECL) \ |
| mips_declare_object (STREAM, NAME, "", ":\n") |
| |
| /* Globalizing directive for a label. */ |
| #define GLOBAL_ASM_OP "\t.globl\t" |
| |
| /* This says how to define a global common symbol. */ |
| |
| #define ASM_OUTPUT_ALIGNED_DECL_COMMON mips_output_aligned_decl_common |
| |
| /* This says how to define a local common symbol (i.e., not visible to |
| linker). */ |
| |
| #ifndef ASM_OUTPUT_ALIGNED_LOCAL |
| #define ASM_OUTPUT_ALIGNED_LOCAL(STREAM, NAME, SIZE, ALIGN) \ |
| mips_declare_common_object (STREAM, NAME, "\n\t.lcomm\t", SIZE, ALIGN, false) |
| #endif |
| |
| /* This says how to output an external. It would be possible not to |
| output anything and let undefined symbol become external. However |
| the assembler uses length information on externals to allocate in |
| data/sdata bss/sbss, thereby saving exec time. */ |
| |
| #undef ASM_OUTPUT_EXTERNAL |
| #define ASM_OUTPUT_EXTERNAL(STREAM,DECL,NAME) \ |
| mips_output_external(STREAM,DECL,NAME) |
| |
| /* This is how to declare a function name. The actual work of |
| emitting the label is moved to function_prologue, so that we can |
| get the line number correctly emitted before the .ent directive, |
| and after any .file directives. Define as empty so that the function |
| is not declared before the .ent directive elsewhere. */ |
| |
| #undef ASM_DECLARE_FUNCTION_NAME |
| #define ASM_DECLARE_FUNCTION_NAME(STREAM,NAME,DECL) |
| |
| /* This is how to store into the string LABEL |
| the symbol_ref name of an internal numbered label where |
| PREFIX is the class of label and NUM is the number within the class. |
| This is suitable for output with `assemble_name'. */ |
| |
| #undef ASM_GENERATE_INTERNAL_LABEL |
| #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \ |
| sprintf ((LABEL), "*%s%s%ld", (LOCAL_LABEL_PREFIX), (PREFIX), (long)(NUM)) |
| |
| /* Print debug labels as "foo = ." rather than "foo:" because they should |
| represent a byte pointer rather than an ISA-encoded address. This is |
| particularly important for code like: |
| |
| $LFBxxx = . |
| .cfi_startproc |
| ... |
| .section .gcc_except_table,... |
| ... |
| .uleb128 foo-$LFBxxx |
| |
| The .uleb128 requies $LFBxxx to match the FDE start address, which is |
| likewise a byte pointer rather than an ISA-encoded address. |
| |
| At the time of writing, this hook is not used for the function end |
| label: |
| |
| $LFExxx: |
| .end foo |
| |
| But this doesn't matter, because GAS doesn't treat a pre-.end label |
| as a MIPS16 one anyway. */ |
| |
| #define ASM_OUTPUT_DEBUG_LABEL(FILE, PREFIX, NUM) \ |
| fprintf (FILE, "%s%s%d = .\n", LOCAL_LABEL_PREFIX, PREFIX, NUM) |
| |
| /* This is how to output an element of a case-vector that is absolute. */ |
| |
| #define ASM_OUTPUT_ADDR_VEC_ELT(STREAM, VALUE) \ |
| fprintf (STREAM, "\t%s\t%sL%d\n", \ |
| ptr_mode == DImode ? ".dword" : ".word", \ |
| LOCAL_LABEL_PREFIX, \ |
| VALUE) |
| |
| /* This is how to output an element of a case-vector. We can make the |
| entries PC-relative in MIPS16 code and GP-relative when .gp(d)word |
| is supported. */ |
| |
| #define ASM_OUTPUT_ADDR_DIFF_ELT(STREAM, BODY, VALUE, REL) \ |
| do { \ |
| if (TARGET_MIPS16_SHORT_JUMP_TABLES) \ |
| { \ |
| if (GET_MODE (BODY) == HImode) \ |
| fprintf (STREAM, "\t.half\t%sL%d-%sL%d\n", \ |
| LOCAL_LABEL_PREFIX, VALUE, LOCAL_LABEL_PREFIX, REL); \ |
| else \ |
| fprintf (STREAM, "\t.word\t%sL%d-%sL%d\n", \ |
| LOCAL_LABEL_PREFIX, VALUE, LOCAL_LABEL_PREFIX, REL); \ |
| } \ |
| else if (TARGET_GPWORD) \ |
| fprintf (STREAM, "\t%s\t%sL%d\n", \ |
| ptr_mode == DImode ? ".gpdword" : ".gpword", \ |
| LOCAL_LABEL_PREFIX, VALUE); \ |
| else if (TARGET_RTP_PIC) \ |
| { \ |
| /* Make the entry relative to the start of the function. */ \ |
| rtx fnsym = XEXP (DECL_RTL (current_function_decl), 0); \ |
| fprintf (STREAM, "\t%s\t%sL%d-", \ |
| Pmode == DImode ? ".dword" : ".word", \ |
| LOCAL_LABEL_PREFIX, VALUE); \ |
| assemble_name (STREAM, XSTR (fnsym, 0)); \ |
| fprintf (STREAM, "\n"); \ |
| } \ |
| else \ |
| fprintf (STREAM, "\t%s\t%sL%d\n", \ |
| ptr_mode == DImode ? ".dword" : ".word", \ |
| LOCAL_LABEL_PREFIX, VALUE); \ |
| } while (0) |
| |
| /* Mark inline jump tables as data for the purpose of disassembly. For |
| simplicity embed the jump table's label number in the local symbol |
| produced so that multiple jump tables within a single function end |
| up marked with unique symbols. Retain the alignment setting from |
| `elfos.h' as we are replacing the definition from there. */ |
| |
| #undef ASM_OUTPUT_BEFORE_CASE_LABEL |
| #define ASM_OUTPUT_BEFORE_CASE_LABEL(STREAM, PREFIX, NUM, TABLE) \ |
| do \ |
| { \ |
| ASM_OUTPUT_ALIGN ((STREAM), 2); \ |
| if (JUMP_TABLES_IN_TEXT_SECTION) \ |
| mips_set_text_contents_type (STREAM, "__jump_", NUM, FALSE); \ |
| } \ |
| while (0) |
| |
| /* Reset text marking to code after an inline jump table. Like with |
| the beginning of a jump table use the label number to keep symbols |
| unique. */ |
| |
| #define ASM_OUTPUT_CASE_END(STREAM, NUM, TABLE) \ |
| do \ |
| if (JUMP_TABLES_IN_TEXT_SECTION) \ |
| mips_set_text_contents_type (STREAM, "__jend_", NUM, TRUE); \ |
| 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(STREAM,LOG) \ |
| fprintf (STREAM, "\t.align\t%d\n", (LOG)) |
| |
| /* This is how to output an assembler line to advance the location |
| counter by SIZE bytes. */ |
| |
| #undef ASM_OUTPUT_SKIP |
| #define ASM_OUTPUT_SKIP(STREAM,SIZE) \ |
| fprintf (STREAM, "\t.space\t" HOST_WIDE_INT_PRINT_UNSIGNED"\n", (SIZE)) |
| |
| /* This is how to output a string. */ |
| #undef ASM_OUTPUT_ASCII |
| #define ASM_OUTPUT_ASCII mips_output_ascii |
| |
| |
| /* Default to -G 8 */ |
| #ifndef MIPS_DEFAULT_GVALUE |
| #define MIPS_DEFAULT_GVALUE 8 |
| #endif |
| |
| /* Define the strings to put out for each section in the object file. */ |
| #define TEXT_SECTION_ASM_OP "\t.text" /* instructions */ |
| #define DATA_SECTION_ASM_OP "\t.data" /* large data */ |
| |
| #undef READONLY_DATA_SECTION_ASM_OP |
| #define READONLY_DATA_SECTION_ASM_OP "\t.rdata" /* read-only data */ |
| |
| #define ASM_OUTPUT_REG_PUSH(STREAM,REGNO) \ |
| do \ |
| { \ |
| fprintf (STREAM, "\t%s\t%s,%s,-8\n\t%s\t%s,0(%s)\n", \ |
| TARGET_64BIT ? "daddiu" : "addiu", \ |
| reg_names[STACK_POINTER_REGNUM], \ |
| reg_names[STACK_POINTER_REGNUM], \ |
| TARGET_64BIT ? "sd" : "sw", \ |
| reg_names[REGNO], \ |
| reg_names[STACK_POINTER_REGNUM]); \ |
| } \ |
| while (0) |
| |
| #define ASM_OUTPUT_REG_POP(STREAM,REGNO) \ |
| do \ |
| { \ |
| mips_push_asm_switch (&mips_noreorder); \ |
| fprintf (STREAM, "\t%s\t%s,0(%s)\n\t%s\t%s,%s,8\n", \ |
| TARGET_64BIT ? "ld" : "lw", \ |
| reg_names[REGNO], \ |
| reg_names[STACK_POINTER_REGNUM], \ |
| TARGET_64BIT ? "daddu" : "addu", \ |
| reg_names[STACK_POINTER_REGNUM], \ |
| reg_names[STACK_POINTER_REGNUM]); \ |
| mips_pop_asm_switch (&mips_noreorder); \ |
| } \ |
| while (0) |
| |
| /* How to start an assembler comment. |
| The leading space is important (the mips native assembler requires it). */ |
| #ifndef ASM_COMMENT_START |
| #define ASM_COMMENT_START " #" |
| #endif |
| |
| #undef SIZE_TYPE |
| #define SIZE_TYPE (POINTER_SIZE == 64 ? "long unsigned int" : "unsigned int") |
| |
| #undef PTRDIFF_TYPE |
| #define PTRDIFF_TYPE (POINTER_SIZE == 64 ? "long int" : "int") |
| |
| /* The minimum alignment of any expanded block move. */ |
| #define MIPS_MIN_MOVE_MEM_ALIGN 16 |
| |
| /* The maximum number of bytes that can be copied by one iteration of |
| a cpymemsi loop; see mips_block_move_loop. */ |
| #define MIPS_MAX_MOVE_BYTES_PER_LOOP_ITER \ |
| (UNITS_PER_WORD * 4) |
| |
| /* The maximum number of bytes that can be copied by a straight-line |
| implementation of cpymemsi; see mips_block_move_straight. We want |
| to make sure that any loop-based implementation will iterate at |
| least twice. */ |
| #define MIPS_MAX_MOVE_BYTES_STRAIGHT \ |
| (MIPS_MAX_MOVE_BYTES_PER_LOOP_ITER * 2) |
| |
| /* The base cost of a memcpy call, for MOVE_RATIO and friends. These |
| values were determined experimentally by benchmarking with CSiBE. |
| In theory, the call overhead is higher for TARGET_ABICALLS (especially |
| for o32 where we have to restore $gp afterwards as well as make an |
| indirect call), but in practice, bumping this up higher for |
| TARGET_ABICALLS doesn't make much difference to code size. */ |
| |
| #define MIPS_CALL_RATIO 8 |
| |
| /* Any loop-based implementation of cpymemsi will have at least |
| MIPS_MAX_MOVE_BYTES_STRAIGHT / UNITS_PER_WORD memory-to-memory |
| moves, so allow individual copies of fewer elements. |
| |
| When cpymemsi is not available, use a value approximating |
| the length of a memcpy call sequence, so that move_by_pieces |
| will generate inline code if it is shorter than a function call. |
| Since move_by_pieces_ninsns counts memory-to-memory moves, but |
| we'll have to generate a load/store pair for each, halve the |
| value of MIPS_CALL_RATIO to take that into account. */ |
| |
| #define MOVE_RATIO(speed) \ |
| (HAVE_cpymemsi \ |
| ? MIPS_MAX_MOVE_BYTES_STRAIGHT / MOVE_MAX \ |
| : MIPS_CALL_RATIO / 2) |
| |
| /* For CLEAR_RATIO, when optimizing for size, give a better estimate |
| of the length of a memset call, but use the default otherwise. */ |
| |
| #define CLEAR_RATIO(speed)\ |
| ((speed) ? 15 : MIPS_CALL_RATIO) |
| |
| /* This is similar to CLEAR_RATIO, but for a non-zero constant, so when |
| optimizing for size adjust the ratio to account for the overhead of |
| loading the constant and replicating it across the word. */ |
| |
| #define SET_RATIO(speed) \ |
| ((speed) ? 15 : MIPS_CALL_RATIO - 2) |
| |
| /* Since the bits of the _init and _fini function is spread across |
| many object files, each potentially with its own GP, we must assume |
| we need to load our GP. We don't preserve $gp or $ra, since each |
| init/fini chunk is supposed to initialize $gp, and crti/crtn |
| already take care of preserving $ra and, when appropriate, $gp. */ |
| #if (defined _ABIO32 && _MIPS_SIM == _ABIO32) |
| #define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \ |
| asm (SECTION_OP "\n\ |
| .set push\n\ |
| .set nomips16\n\ |
| .set noreorder\n\ |
| bal 1f\n\ |
| nop\n\ |
| 1: .cpload $31\n\ |
| .set reorder\n\ |
| la $25, " USER_LABEL_PREFIX #FUNC "\n\ |
| jalr $25\n\ |
| .set pop\n\ |
| " TEXT_SECTION_ASM_OP); |
| #elif (defined _ABIN32 && _MIPS_SIM == _ABIN32) |
| #define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \ |
| asm (SECTION_OP "\n\ |
| .set push\n\ |
| .set nomips16\n\ |
| .set noreorder\n\ |
| bal 1f\n\ |
| nop\n\ |
| 1: .set reorder\n\ |
| .cpsetup $31, $2, 1b\n\ |
| la $25, " USER_LABEL_PREFIX #FUNC "\n\ |
| jalr $25\n\ |
| .set pop\n\ |
| " TEXT_SECTION_ASM_OP); |
| #elif (defined _ABI64 && _MIPS_SIM == _ABI64) |
| #define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \ |
| asm (SECTION_OP "\n\ |
| .set push\n\ |
| .set nomips16\n\ |
| .set noreorder\n\ |
| bal 1f\n\ |
| nop\n\ |
| 1: .set reorder\n\ |
| .cpsetup $31, $2, 1b\n\ |
| dla $25, " USER_LABEL_PREFIX #FUNC "\n\ |
| jalr $25\n\ |
| .set pop\n\ |
| " TEXT_SECTION_ASM_OP); |
| #endif |
| |
| #ifndef HAVE_AS_TLS |
| #define HAVE_AS_TLS 0 |
| #endif |
| |
| #ifndef HAVE_AS_NAN |
| #define HAVE_AS_NAN 0 |
| #endif |
| |
| #ifndef USED_FOR_TARGET |
| /* Information about ".set noFOO; ...; .set FOO" blocks. */ |
| struct mips_asm_switch { |
| /* The FOO in the description above. */ |
| const char *name; |
| |
| /* The current block nesting level, or 0 if we aren't in a block. */ |
| int nesting_level; |
| }; |
| |
| extern const enum reg_class mips_regno_to_class[]; |
| extern const char *current_function_file; /* filename current function is in */ |
| extern int num_source_filenames; /* current .file # */ |
| extern struct mips_asm_switch mips_noreorder; |
| extern struct mips_asm_switch mips_nomacro; |
| extern struct mips_asm_switch mips_noat; |
| extern int mips_dbx_regno[]; |
| extern int mips_dwarf_regno[]; |
| extern bool mips_split_p[]; |
| extern bool mips_split_hi_p[]; |
| extern bool mips_use_pcrel_pool_p[]; |
| extern const char *mips_lo_relocs[]; |
| extern const char *mips_hi_relocs[]; |
| extern enum processor mips_arch; /* which cpu to codegen for */ |
| extern enum processor mips_tune; /* which cpu to schedule for */ |
| extern int mips_isa; /* architectural level */ |
| extern int mips_isa_rev; |
| extern const struct mips_cpu_info *mips_arch_info; |
| extern const struct mips_cpu_info *mips_tune_info; |
| extern unsigned int mips_base_compression_flags; |
| extern GTY(()) struct target_globals *mips16_globals; |
| extern GTY(()) struct target_globals *micromips_globals; |
| |
| /* Information about a function's frame layout. */ |
| struct GTY(()) mips_frame_info { |
| /* The size of the frame in bytes. */ |
| HOST_WIDE_INT total_size; |
| |
| /* The number of bytes allocated to variables. */ |
| HOST_WIDE_INT var_size; |
| |
| /* The number of bytes allocated to outgoing function arguments. */ |
| HOST_WIDE_INT args_size; |
| |
| /* The number of bytes allocated to the .cprestore slot, or 0 if there |
| is no such slot. */ |
| HOST_WIDE_INT cprestore_size; |
| |
| /* Bit X is set if the function saves or restores GPR X. */ |
| unsigned int mask; |
| |
| /* Likewise FPR X. */ |
| unsigned int fmask; |
| |
| /* Likewise doubleword accumulator X ($acX). */ |
| unsigned int acc_mask; |
| |
| /* The number of GPRs, FPRs, doubleword accumulators and COP0 |
| registers saved. */ |
| unsigned int num_gp; |
| unsigned int num_fp; |
| unsigned int num_acc; |
| unsigned int num_cop0_regs; |
| |
| /* The offset of the topmost GPR, FPR, accumulator and COP0-register |
| save slots from the top of the frame, or zero if no such slots are |
| needed. */ |
| HOST_WIDE_INT gp_save_offset; |
| HOST_WIDE_INT fp_save_offset; |
| HOST_WIDE_INT acc_save_offset; |
| HOST_WIDE_INT cop0_save_offset; |
| |
| /* Likewise, but giving offsets from the bottom of the frame. */ |
| HOST_WIDE_INT gp_sp_offset; |
| HOST_WIDE_INT fp_sp_offset; |
| HOST_WIDE_INT acc_sp_offset; |
| HOST_WIDE_INT cop0_sp_offset; |
| |
| /* Similar, but the value passed to _mcount. */ |
| HOST_WIDE_INT ra_fp_offset; |
| |
| /* The offset of arg_pointer_rtx from the bottom of the frame. */ |
| HOST_WIDE_INT arg_pointer_offset; |
| |
| /* The offset of hard_frame_pointer_rtx from the bottom of the frame. */ |
| HOST_WIDE_INT hard_frame_pointer_offset; |
| }; |
| |
| /* Enumeration for masked vectored (VI) and non-masked (EIC) interrupts. */ |
| enum mips_int_mask |
| { |
| INT_MASK_EIC = -1, |
| INT_MASK_SW0 = 0, |
| INT_MASK_SW1 = 1, |
| INT_MASK_HW0 = 2, |
| INT_MASK_HW1 = 3, |
| INT_MASK_HW2 = 4, |
| INT_MASK_HW3 = 5, |
| INT_MASK_HW4 = 6, |
| INT_MASK_HW5 = 7 |
| }; |
| |
| /* Enumeration to mark the existence of the shadow register set. |
| SHADOW_SET_INTSTACK indicates a shadow register set with a valid stack |
| pointer. */ |
| enum mips_shadow_set |
| { |
| SHADOW_SET_NO, |
| SHADOW_SET_YES, |
| SHADOW_SET_INTSTACK |
| }; |
| |
| struct GTY(()) machine_function { |
| /* The next floating-point condition-code register to allocate |
| for ISA_HAS_8CC targets, relative to ST_REG_FIRST. */ |
| unsigned int next_fcc; |
| |
| /* The register returned by mips16_gp_pseudo_reg; see there for details. */ |
| rtx mips16_gp_pseudo_rtx; |
| |
| /* The number of extra stack bytes taken up by register varargs. |
| This area is allocated by the callee at the very top of the frame. */ |
| int varargs_size; |
| |
| /* The current frame information, calculated by mips_compute_frame_info. */ |
| struct mips_frame_info frame; |
| |
| /* The register to use as the function's global pointer, or INVALID_REGNUM |
| if the function doesn't need one. */ |
| unsigned int global_pointer; |
| |
| /* How many instructions it takes to load a label into $AT, or 0 if |
| this property hasn't yet been calculated. */ |
| unsigned int load_label_num_insns; |
| |
| /* True if mips_adjust_insn_length should ignore an instruction's |
| hazard attribute. */ |
| bool ignore_hazard_length_p; |
| |
| /* True if the whole function is suitable for .set noreorder and |
| .set nomacro. */ |
| bool all_noreorder_p; |
| |
| /* True if the function has "inflexible" and "flexible" references |
| to the global pointer. See mips_cfun_has_inflexible_gp_ref_p |
| and mips_cfun_has_flexible_gp_ref_p for details. */ |
| bool has_inflexible_gp_insn_p; |
| bool has_flexible_gp_insn_p; |
| |
| /* True if the function's prologue must load the global pointer |
| value into pic_offset_table_rtx and store the same value in |
| the function's cprestore slot (if any). Even if this value |
| is currently false, we may decide to set it to true later; |
| see mips_must_initialize_gp_p () for details. */ |
| bool must_initialize_gp_p; |
| |
| /* True if the current function must restore $gp after any potential |
| clobber. This value is only meaningful during the first post-epilogue |
| split_insns pass; see mips_must_initialize_gp_p () for details. */ |
| bool must_restore_gp_when_clobbered_p; |
| |
| /* True if this is an interrupt handler. */ |
| bool interrupt_handler_p; |
| |
| /* Records the way in which interrupts should be masked. Only used if |
| interrupts are not kept masked. */ |
| enum mips_int_mask int_mask; |
| |
| /* Records if this is an interrupt handler that uses shadow registers. */ |
| enum mips_shadow_set use_shadow_register_set; |
| |
| /* True if this is an interrupt handler that should keep interrupts |
| masked. */ |
| bool keep_interrupts_masked_p; |
| |
| /* True if this is an interrupt handler that should use DERET |
| instead of ERET. */ |
| bool use_debug_exception_return_p; |
| |
| /* True if at least one of the formal parameters to a function must be |
| written to the frame header (probably so its address can be taken). */ |
| bool does_not_use_frame_header; |
| |
| /* True if none of the functions that are called by this function need |
| stack space allocated for their arguments. */ |
| bool optimize_call_stack; |
| |
| /* True if one of the functions calling this function may not allocate |
| a frame header. */ |
| bool callers_may_not_allocate_frame; |
| |
| /* True if GCC stored callee saved registers in the frame header. */ |
| bool use_frame_header_for_callee_saved_regs; |
| }; |
| #endif |
| |
| /* Enable querying of DFA units. */ |
| #define CPU_UNITS_QUERY 1 |
| |
| #define FINAL_PRESCAN_INSN(INSN, OPVEC, NOPERANDS) \ |
| mips_final_prescan_insn (INSN, OPVEC, NOPERANDS) |
| |
| /* As on most targets, we want the .eh_frame section to be read-only where |
| possible. And as on most targets, this means two things: |
| |
| (a) Non-locally-binding pointers must have an indirect encoding, |
| so that the addresses in the .eh_frame section itself become |
| locally-binding. |
| |
| (b) A shared library's .eh_frame section must encode locally-binding |
| pointers in a relative (relocation-free) form. |
| |
| However, MIPS has traditionally not allowed directives like: |
| |
| .long x-. |
| |
| in cases where "x" is in a different section, or is not defined in the |
| same assembly file. We are therefore unable to emit the PC-relative |
| form required by (b) at assembly time. |
| |
| Fortunately, the linker is able to convert absolute addresses into |
| PC-relative addresses on our behalf. Unfortunately, only certain |
| versions of the linker know how to do this for indirect pointers, |
| and for personality data. We must fall back on using writable |
| .eh_frame sections for shared libraries if the linker does not |
| support this feature. */ |
| #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \ |
| (((GLOBAL) ? DW_EH_PE_indirect : 0) | DW_EH_PE_absptr) |
| |
| /* For switching between MIPS16 and non-MIPS16 modes. */ |
| #define SWITCHABLE_TARGET 1 |
| |
| /* Several named MIPS patterns depend on Pmode. These patterns have the |
| form <NAME>_si for Pmode == SImode and <NAME>_di for Pmode == DImode. |
| Add the appropriate suffix to generator function NAME and invoke it |
| with arguments ARGS. */ |
| #define PMODE_INSN(NAME, ARGS) \ |
| (Pmode == SImode ? NAME ## _si ARGS : NAME ## _di ARGS) |
| |
| /* If we are *not* using multilibs and the default ABI is not ABI_32 we |
| need to change these from /lib and /usr/lib. */ |
| #if MIPS_ABI_DEFAULT == ABI_N32 |
| #define STANDARD_STARTFILE_PREFIX_1 "/lib32/" |
| #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib32/" |
| #elif MIPS_ABI_DEFAULT == ABI_64 |
| #define STANDARD_STARTFILE_PREFIX_1 "/lib64/" |
| #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib64/" |
| #endif |
| |
| /* Load store bonding is not supported by micromips and fix_24k. The |
| performance can be degraded for those targets. Hence, do not bond for |
| micromips or fix_24k. */ |
| #define ENABLE_LD_ST_PAIRS \ |
| (TARGET_LOAD_STORE_PAIRS \ |
| && (TUNE_P5600 || TUNE_I6400 || TUNE_P6600) \ |
| && !TARGET_MICROMIPS && !TARGET_FIX_24K) |
| |
| #define NEED_INDICATE_EXEC_STACK 0 |