diff options
Diffstat (limited to 'gcc/config/sparc/sparc.h')
| -rw-r--r-- | gcc/config/sparc/sparc.h | 259 |
1 files changed, 150 insertions, 109 deletions
diff --git a/gcc/config/sparc/sparc.h b/gcc/config/sparc/sparc.h index 779a39c988e..3f2157810b6 100644 --- a/gcc/config/sparc/sparc.h +++ b/gcc/config/sparc/sparc.h @@ -358,6 +358,11 @@ Unrecognized value in TARGET_CPU_DEFAULT. SUBTARGET_EXTRA_SPECS #define SUBTARGET_EXTRA_SPECS + +/* Because libgcc can generate references back to libc (via .umul etc.) we have + to list libc again after the second libgcc. */ +#define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G %L" + #ifdef SPARC_BI_ARCH #define NO_BUILTIN_PTRDIFF_TYPE @@ -369,34 +374,11 @@ Unrecognized value in TARGET_CPU_DEFAULT. /* ??? This should be 32 bits for v9 but what can we do? */ #define WCHAR_TYPE "short unsigned int" #define WCHAR_TYPE_SIZE 16 -#define MAX_WCHAR_TYPE_SIZE 16 /* Show we can debug even without a frame pointer. */ #define CAN_DEBUG_WITHOUT_FP -/* To make profiling work with -f{pic,PIC}, we need to emit the profiling - code into the rtl. Also, if we are profiling, we cannot eliminate - the frame pointer (because the return address will get smashed). */ - -#define OVERRIDE_OPTIONS \ - do { \ - if (profile_flag || profile_arc_flag) \ - { \ - if (flag_pic) \ - { \ - const char *const pic_string = (flag_pic == 1) ? "-fpic" : "-fPIC";\ - warning ("%s and profiling conflict: disabling %s", \ - pic_string, pic_string); \ - flag_pic = 0; \ - } \ - flag_omit_frame_pointer = 0; \ - } \ - sparc_override_options (); \ - SUBTARGET_OVERRIDE_OPTIONS; \ - } while (0) - -/* This is meant to be redefined in the host dependent files. */ -#define SUBTARGET_OVERRIDE_OPTIONS +#define OVERRIDE_OPTIONS sparc_override_options () /* Generate DBX debugging information. */ @@ -410,11 +392,6 @@ extern int target_flags; #define MASK_FPU 1 #define TARGET_FPU (target_flags & MASK_FPU) -/* Nonzero if we should use function_epilogue(). Otherwise, we - use fast return insns, but lose some generality. */ -#define MASK_EPILOGUE 2 -#define TARGET_EPILOGUE (target_flags & MASK_EPILOGUE) - /* Nonzero if we should assume that double pointers might be unaligned. This can happen when linking gcc compiled code with other compilers, because the ABI only guarantees 4 byte alignment. */ @@ -558,10 +535,6 @@ extern int target_flags; {"soft-float", -MASK_FPU, \ N_("Do not use hardware fp") }, \ {"soft-float", MASK_FPU_SET, NULL }, \ - {"epilogue", MASK_EPILOGUE, \ - N_("Use function_epilogue()") }, \ - {"no-epilogue", -MASK_EPILOGUE, \ - N_("Do not use function_epilogue()") }, \ {"unaligned-doubles", MASK_UNALIGNED_DOUBLES, \ N_("Assume possible double misalignment") }, \ {"no-unaligned-doubles", -MASK_UNALIGNED_DOUBLES, \ @@ -630,7 +603,7 @@ extern int target_flags; /* MASK_APP_REGS must always be the default because that's what FIXED_REGISTERS is set to and -ffixed- is processed before CONDITIONAL_REGISTER_USAGE is called (where we process -mno-app-regs). */ -#define TARGET_DEFAULT (MASK_APP_REGS + MASK_EPILOGUE + MASK_FPU) +#define TARGET_DEFAULT (MASK_APP_REGS + MASK_FPU) /* This is meant to be redefined in target specific files. */ #define SUBTARGET_SWITCHES @@ -722,7 +695,11 @@ extern struct sparc_cpu_select sparc_select[]; /* Width of a word, in units (bytes). */ #define UNITS_PER_WORD (TARGET_ARCH64 ? 8 : 4) +#ifdef IN_LIBGCC2 +#define MIN_UNITS_PER_WORD UNITS_PER_WORD +#else #define MIN_UNITS_PER_WORD 4 +#endif /* Now define the sizes of the C data types. */ @@ -996,7 +973,7 @@ if (TARGET_ARCH64 \ #define CONDITIONAL_REGISTER_USAGE \ do \ { \ - if (flag_pic) \ + if (PIC_OFFSET_TABLE_REGNUM != INVALID_REGNUM) \ { \ fixed_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \ call_used_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \ @@ -1040,12 +1017,16 @@ do \ fixed_regs[4] = 0; \ if (TARGET_FLAT) \ { \ + int regno; \ /* Let the compiler believe the frame pointer is still \ %fp, but output it as %i7. */ \ fixed_regs[31] = 1; \ reg_names[HARD_FRAME_POINTER_REGNUM] = "%i7"; \ /* Disable leaf functions */ \ memset (sparc_leaf_regs, 0, FIRST_PSEUDO_REGISTER); \ + /* Make LEAF_REG_REMAP a noop. */ \ + for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++) \ + leaf_reg_remap [regno] = regno; \ } \ } \ while (0) @@ -1151,16 +1132,6 @@ extern int sparc_mode_class[]; || !leaf_function_p ()) \ : ! (leaf_function_p () && only_leaf_regs_used ())) -/* C statement to store the difference between the frame pointer - and the stack pointer values immediately after the function prologue. - - Note, we always pretend that this is a leaf function because if - it's not, there's no point in trying to eliminate the - frame pointer. If it is a leaf function, we guessed right! */ -#define INITIAL_FRAME_POINTER_OFFSET(VAR) \ - ((VAR) = (TARGET_FLAT ? sparc_flat_compute_frame_size (get_frame_size ()) \ - : compute_frame_size (get_frame_size (), 1))) - /* Base register for access to arguments of the function. */ #define ARG_POINTER_REGNUM FRAME_POINTER_REGNUM @@ -1171,7 +1142,7 @@ extern int sparc_mode_class[]; /* Register which holds offset table for position-independent data references. */ -#define PIC_OFFSET_TABLE_REGNUM 23 +#define PIC_OFFSET_TABLE_REGNUM (flag_pic ? 23 : INVALID_REGNUM) /* Pick a default value we can notice from override_options: !v9: Default is on. @@ -1352,7 +1323,7 @@ extern enum reg_class sparc_regno_reg_class[FIRST_PSEUDO_REGISTER]; extern char sparc_leaf_regs[]; #define LEAF_REGISTERS sparc_leaf_regs -extern const char leaf_reg_remap[]; +extern char leaf_reg_remap[]; #define LEAF_REG_REMAP(REGNO) (leaf_reg_remap[REGNO]) /* The class value for index registers, and the one for base regs. */ @@ -1459,7 +1430,10 @@ extern const char leaf_reg_remap[]; We need a temporary when loading/storing a HImode/QImode value between memory and the FPU registers. This can happen when combine puts - a paradoxical subreg in a float/fix conversion insn. */ + a paradoxical subreg in a float/fix conversion insn. + + We need a temporary when loading/storing a DFmode value between + unaligned memory and the upper FPU registers. */ #define SECONDARY_INPUT_RELOAD_CLASS(CLASS, MODE, IN) \ ((FP_REG_CLASS_P (CLASS) \ @@ -1468,28 +1442,36 @@ extern const char leaf_reg_remap[]; || ((GET_CODE (IN) == REG || GET_CODE (IN) == SUBREG) \ && true_regnum (IN) == -1))) \ ? GENERAL_REGS \ - : (((TARGET_CM_MEDANY \ - && symbolic_operand ((IN), (MODE))) \ - || (TARGET_CM_EMBMEDANY \ - && text_segment_operand ((IN), (MODE)))) \ - && !flag_pic) \ - ? GENERAL_REGS \ - : NO_REGS) + : ((CLASS) == EXTRA_FP_REGS && (MODE) == DFmode \ + && GET_CODE (IN) == MEM && TARGET_ARCH32 \ + && ! mem_min_alignment ((IN), 8)) \ + ? FP_REGS \ + : (((TARGET_CM_MEDANY \ + && symbolic_operand ((IN), (MODE))) \ + || (TARGET_CM_EMBMEDANY \ + && text_segment_operand ((IN), (MODE)))) \ + && !flag_pic) \ + ? GENERAL_REGS \ + : NO_REGS) #define SECONDARY_OUTPUT_RELOAD_CLASS(CLASS, MODE, IN) \ - ((FP_REG_CLASS_P (CLASS) \ + ((FP_REG_CLASS_P (CLASS) \ && ((MODE) == HImode || (MODE) == QImode) \ && (GET_CODE (IN) == MEM \ || ((GET_CODE (IN) == REG || GET_CODE (IN) == SUBREG) \ && true_regnum (IN) == -1))) \ - ? GENERAL_REGS \ - : (((TARGET_CM_MEDANY \ - && symbolic_operand ((IN), (MODE))) \ - || (TARGET_CM_EMBMEDANY \ - && text_segment_operand ((IN), (MODE)))) \ - && !flag_pic) \ - ? GENERAL_REGS \ - : NO_REGS) + ? GENERAL_REGS \ + : ((CLASS) == EXTRA_FP_REGS && (MODE) == DFmode \ + && GET_CODE (IN) == MEM && TARGET_ARCH32 \ + && ! mem_min_alignment ((IN), 8)) \ + ? FP_REGS \ + : (((TARGET_CM_MEDANY \ + && symbolic_operand ((IN), (MODE))) \ + || (TARGET_CM_EMBMEDANY \ + && text_segment_operand ((IN), (MODE)))) \ + && !flag_pic) \ + ? GENERAL_REGS \ + : NO_REGS) /* On SPARC it is not possible to directly move data between GENERAL_REGS and FP_REGS. */ @@ -1589,12 +1571,33 @@ extern const char leaf_reg_remap[]; /* ??? In TARGET_FLAT mode we needn't have a hard frame pointer. */ #define ELIMINABLE_REGS \ - {{ FRAME_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM}} + {{ FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ + { FRAME_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM} } -#define CAN_ELIMINATE(FROM, TO) 1 +/* The way this is structured, we can't eliminate SFP in favor of SP + if the frame pointer is required: we want to use the SFP->HFP elimination + in that case. But the test in update_eliminables doesn't know we are + assuming below that we only do the former elimination. */ +#define CAN_ELIMINATE(FROM, TO) \ + ((TO) == HARD_FRAME_POINTER_REGNUM || !FRAME_POINTER_REQUIRED) #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \ - ((OFFSET) = SPARC_STACK_BIAS) + do { \ + (OFFSET) = 0; \ + if ((TO) == STACK_POINTER_REGNUM) \ + { \ + /* Note, we always pretend that this is a leaf function \ + because if it's not, there's no point in trying to \ + eliminate the frame pointer. If it is a leaf \ + function, we guessed right! */ \ + if (TARGET_FLAT) \ + (OFFSET) = \ + sparc_flat_compute_frame_size (get_frame_size ()); \ + else \ + (OFFSET) = compute_frame_size (get_frame_size (), 1); \ + } \ + (OFFSET) += SPARC_STACK_BIAS; \ + } while (0) /* Keep the stack pointer constant throughout the function. This is both an optimization and a necessity: longjmp @@ -1856,14 +1859,13 @@ do { \ #endif -/* Output assembler code to FILE to increment profiler label # LABELNO - for profiling a function entry. */ +/* Emit rtl for profiling. */ +#define PROFILE_HOOK(LABEL) sparc_profile_hook (LABEL) -#define FUNCTION_PROFILER(FILE, LABELNO) \ - sparc_function_profiler(FILE, LABELNO) +/* All the work done in PROFILE_HOOK, but still required. */ +#define FUNCTION_PROFILER(FILE, LABELNO) do { } while (0) /* Set the name of the mcount function for the system. */ - #define MCOUNT_FUNCTION "*mcount" /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function, @@ -1927,8 +1929,25 @@ do { \ #define STRICT_ARGUMENT_NAMING TARGET_V9 /* We do not allow sibling calls if -mflat, nor - we do not allow indirect calls to be optimized into sibling calls. */ -#define FUNCTION_OK_FOR_SIBCALL(DECL) (DECL && ! TARGET_FLAT) + we do not allow indirect calls to be optimized into sibling calls. + + Also, on sparc 32-bit we cannot emit a sibling call when the + current function returns a structure. This is because the "unimp + after call" convention would cause the callee to return to the + wrong place. The generic code already disallows cases where the + function being called returns a structure. + + It may seem strange how this last case could occur. Usually there + is code after the call which jumps to epilogue code which dumps the + return value into the struct return area. That ought to invalidate + the sibling call right? Well, in the c++ case we can end up passing + the pointer to the struct return area to a constructor (which returns + void) and then nothing else happens. Such a sibling call would look + valid without the added check here. */ +#define FUNCTION_OK_FOR_SIBCALL(DECL) \ + (DECL \ + && ! TARGET_FLAT \ + && (TARGET_ARCH64 || ! current_function_returns_struct)) /* Generate RTL to flush the register windows so as to make arbitrary frames available. */ @@ -1961,7 +1980,8 @@ do { \ ? gen_rtx_REG (Pmode, 31) \ : gen_rtx_MEM (Pmode, \ memory_address (Pmode, plus_constant (frame, \ - 15 * UNITS_PER_WORD)))) + 15 * UNITS_PER_WORD \ + + SPARC_STACK_BIAS)))) /* Before the prologue, the return address is %o7 + 8. OK, sometimes it's +12, but always using +8 is close enough for frame unwind purposes. @@ -1988,14 +2008,27 @@ do { \ If assembler and linker properly support .uaword %r_disp32(foo), then use PC relative 32-bit relocations instead of absolute relocs for shared libraries. On sparc64, use pc relative 32-bit relocs even - for binaries, to save memory. */ + for binaries, to save memory. + + binutils 2.12 would emit a R_SPARC_DISP32 dynamic relocation if the + symbol %r_disp32() is against was not local, but .hidden. In that + case, we have to use DW_EH_PE_absptr for pic personality. */ #ifdef HAVE_AS_SPARC_UA_PCREL +#ifdef HAVE_AS_SPARC_UA_PCREL_HIDDEN #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \ (flag_pic \ ? (GLOBAL ? DW_EH_PE_indirect : 0) | DW_EH_PE_pcrel | DW_EH_PE_sdata4\ : ((TARGET_ARCH64 && ! GLOBAL) \ ? (DW_EH_PE_pcrel | DW_EH_PE_sdata4) \ : DW_EH_PE_absptr)) +#else +#define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \ + (flag_pic \ + ? (GLOBAL ? DW_EH_PE_absptr : (DW_EH_PE_pcrel | DW_EH_PE_sdata4)) \ + : ((TARGET_ARCH64 && ! GLOBAL) \ + ? (DW_EH_PE_pcrel | DW_EH_PE_sdata4) \ + : DW_EH_PE_absptr)) +#endif /* Emit a PC-relative relocation. */ #define ASM_OUTPUT_DWARF_PCREL(FILE, SIZE, LABEL) \ @@ -2110,13 +2143,10 @@ do { \ be at least 8 bytes. `U' handles all pseudo registers or a hard even numbered - integer register, needed for ldd/std instructions. */ + integer register, needed for ldd/std instructions. -#define EXTRA_CONSTRAINT_BASE(OP, C) \ - ((C) == 'Q' ? fp_sethi_p(OP) \ - : (C) == 'R' ? fp_mov_p(OP) \ - : (C) == 'S' ? fp_high_losum_p(OP) \ - : 0) + 'W' handles the memory operand when moving operands in/out + of 'e' constraint floating point registers. */ #ifndef REG_OK_STRICT @@ -2131,15 +2161,14 @@ do { \ or if it is a pseudo reg. */ #define REG_OK_FOR_BASE_P(X) REG_OK_FOR_INDEX_P (X) -/* 'T', 'U' are for aligned memory loads which aren't needed for arch64. */ +/* 'T', 'U' are for aligned memory loads which aren't needed for arch64. + 'W' is like 'T' but is assumed true on arch64. + + Remember to accept pseudo-registers for memory constraints if reload is + in progress. */ -#define EXTRA_CONSTRAINT(OP, C) \ - (EXTRA_CONSTRAINT_BASE(OP, C) \ - || ((! TARGET_ARCH64 && (C) == 'T') \ - ? (mem_min_alignment (OP, 8)) \ - : ((! TARGET_ARCH64 && (C) == 'U') \ - ? (register_ok_for_ldd (OP)) \ - : 0))) +#define EXTRA_CONSTRAINT(OP, C) \ + sparc_extra_constraint_check(OP, C, 0) #else @@ -2148,16 +2177,8 @@ do { \ /* Nonzero if X is a hard reg that can be used as a base reg. */ #define REG_OK_FOR_BASE_P(X) REGNO_OK_FOR_BASE_P (REGNO (X)) -#define EXTRA_CONSTRAINT(OP, C) \ - (EXTRA_CONSTRAINT_BASE(OP, C) \ - || ((! TARGET_ARCH64 && (C) == 'T') \ - ? mem_min_alignment (OP, 8) && strict_memory_address_p (Pmode, XEXP (OP, 0)) \ - : ((! TARGET_ARCH64 && (C) == 'U') \ - ? (GET_CODE (OP) == REG \ - && (REGNO (OP) < FIRST_PSEUDO_REGISTER \ - || reg_renumber[REGNO (OP)] >= 0) \ - && register_ok_for_ldd (OP)) \ - : 0))) +#define EXTRA_CONSTRAINT(OP, C) \ + sparc_extra_constraint_check(OP, C, 1) #endif @@ -2359,12 +2380,13 @@ do { \ /* Decompose SImode constants into hi+lo_sum. We do have to \ rerecognize what we produce, so be careful. */ \ if (CONSTANT_P (X) \ - && (MODE != TFmode || TARGET_V9) \ + && (MODE != TFmode || TARGET_ARCH64) \ && GET_MODE (X) == SImode \ && GET_CODE (X) != LO_SUM && GET_CODE (X) != HIGH \ && ! (flag_pic \ && (symbolic_operand (X, Pmode) \ - || pic_address_needs_scratch (X)))) \ + || pic_address_needs_scratch (X))) \ + && sparc_cmodel <= CM_MEDLOW) \ { \ X = gen_rtx_LO_SUM (GET_MODE (X), \ gen_rtx_HIGH (GET_MODE (X), X), X); \ @@ -2629,6 +2651,23 @@ do { \ || (CLASS1) == FPCC_REGS || (CLASS2) == FPCC_REGS) \ ? (sparc_cpu == PROCESSOR_ULTRASPARC ? 12 : 6) : 2) +/* Provide the cost of a branch. For pre-v9 processors we use + a value of 3 to take into account the potential annulling of + the delay slot (which ends up being a bubble in the pipeline slot) + plus a cycle to take into consideration the instruction cache + effects. + + On v9 and later, which have branch prediction facilities, we set + it to the depth of the pipeline as that is the cost of a + mispredicted branch. + + ??? Set to 9 when PROCESSOR_ULTRASPARC3 is added */ + +#define BRANCH_COST \ + ((sparc_cpu == PROCESSOR_V9 \ + || sparc_cpu == PROCESSOR_ULTRASPARC) \ + ? 7 : 3) + /* Provide the costs of a rtl expression. This is in the body of a switch on CODE. The purpose for the cost of MULT is to encourage `synth_mult' to find a synthetic multiply when reasonable. @@ -2656,13 +2695,12 @@ do { \ case FIX: \ return 19; -/* Conditional branches with empty delay slots have a length of two. */ -#define ADJUST_INSN_LENGTH(INSN, LENGTH) \ -do { \ - if (GET_CODE (INSN) == CALL_INSN \ - || (GET_CODE (INSN) == JUMP_INSN && ! simplejump_p (insn))) \ - LENGTH += 1; \ -} while (0) +#define PREFETCH_BLOCK \ + ((sparc_cpu == PROCESSOR_ULTRASPARC) ? 64 : 32) + +/* ??? UltraSPARC-III note: Can set this to 8 for ultra3. */ +#define SIMULTANEOUS_PREFETCHES \ + ((sparc_cpu == PROCESSOR_ULTRASPARC) ? 2 : 3) /* Control the assembler format that we output. */ @@ -2977,8 +3015,10 @@ do { \ #define PREDICATE_CODES \ {"reg_or_0_operand", {SUBREG, REG, CONST_INT, CONST_DOUBLE}}, \ {"fp_zero_operand", {CONST_DOUBLE}}, \ +{"fp_register_operand", {SUBREG, REG}}, \ {"intreg_operand", {SUBREG, REG}}, \ {"fcc_reg_operand", {REG}}, \ +{"fcc0_reg_operand", {REG}}, \ {"icc_or_fcc_reg_operand", {REG}}, \ {"restore_operand", {REG}}, \ {"call_operand", {MEM}}, \ @@ -2996,6 +3036,7 @@ do { \ {"eq_or_neq", {EQ, NE}}, \ {"normal_comp_operator", {GE, GT, LE, LT, GTU, LEU}}, \ {"noov_compare_op", {NE, EQ, GE, GT, LE, LT, GEU, GTU, LEU, LTU}}, \ +{"noov_compare64_op", {NE, EQ, GE, GT, LE, LT, GEU, GTU, LEU, LTU}}, \ {"v9_regcmp_op", {EQ, NE, GE, LT, LE, GT}}, \ {"extend_op", {SIGN_EXTEND, ZERO_EXTEND}}, \ {"cc_arithop", {AND, IOR, XOR}}, \ |