| /* Definitions of target machine for GNU compiler. System/370 version. |
| Copyright (C) 1989, 1993, 1995, 1996, 1997, 1998, 1999, 2000 |
| Free Software Foundation, Inc. |
| Contributed by Jan Stein (jan@cd.chalmers.se). |
| Modified for OS/390 LanguageEnvironment C by Dave Pitts (dpitts@cozx.com) |
| Hacked for Linux-ELF/390 by Linas Vepstas (linas@linas.org) |
| |
| This file is part of GNU CC. |
| |
| GNU CC is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU CC 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 GNU CC; see the file COPYING. If not, write to |
| the Free Software Foundation, 59 Temple Place - Suite 330, |
| Boston, MA 02111-1307, USA. */ |
| |
| #ifndef GCC_I370_H |
| #define GCC_I370_H |
| /* Run-time compilation parameters selecting different hardware subsets. */ |
| |
| extern int target_flags; |
| |
| /* The sizes of the code and literals on the current page. */ |
| |
| extern int mvs_page_code, mvs_page_lit; |
| |
| /* The current page number and the base page number for the function. */ |
| |
| extern int mvs_page_num, function_base_page; |
| |
| /* The name of the current function. */ |
| |
| extern char *mvs_function_name; |
| |
| /* The length of the function name malloc'd area. */ |
| |
| extern int mvs_function_name_length; |
| |
| /* Compile using char instructions (mvc, nc, oc, xc). On 4341 use this since |
| these are more than twice as fast as load-op-store. |
| On 3090 don't use this since load-op-store is much faster. */ |
| |
| #define TARGET_CHAR_INSTRUCTIONS (target_flags & 1) |
| |
| /* Default target switches */ |
| |
| #define TARGET_DEFAULT 1 |
| |
| /* Macro to define tables used to set the flags. This is a list in braces |
| of pairs in braces, each pair being { "NAME", VALUE } |
| where VALUE is the bits to set or minus the bits to clear. |
| An empty string NAME is used to identify the default VALUE. */ |
| |
| #define TARGET_SWITCHES \ |
| { { "char-instructions", 1, N_("Generate char instructions")}, \ |
| { "no-char-instructions", -1, N_("Do not generate char instructions")}, \ |
| { "", TARGET_DEFAULT, 0} } |
| |
| /* To use IBM supplied macro function prologue and epilogue, define the |
| following to 1. Should only be needed if IBM changes the definition |
| of their prologue and epilogue. */ |
| |
| #define MACROPROLOGUE 0 |
| #define MACROEPILOGUE 0 |
| |
| /* Target machine storage layout */ |
| |
| /* Define this if most significant bit is lowest numbered in instructions |
| that operate on numbered bit-fields. */ |
| |
| #define BITS_BIG_ENDIAN 1 |
| |
| /* Define this if most significant byte of a word is the lowest numbered. */ |
| |
| #define BYTES_BIG_ENDIAN 1 |
| |
| /* Define this if MS word of a multiword is the lowest numbered. */ |
| |
| #define WORDS_BIG_ENDIAN 1 |
| |
| /* Number of bits in an addressable storage unit. */ |
| |
| #define BITS_PER_UNIT 8 |
| |
| /* Width in bits of a "word", which is the contents of a machine register. */ |
| |
| #define BITS_PER_WORD 32 |
| |
| /* Width of a word, in units (bytes). */ |
| |
| #define UNITS_PER_WORD 4 |
| |
| /* Width in bits of a pointer. See also the macro `Pmode' defined below. */ |
| |
| #define POINTER_SIZE 32 |
| |
| /* Allocation boundary (in *bits*) for storing pointers in memory. */ |
| |
| #define POINTER_BOUNDARY 32 |
| |
| /* Allocation boundary (in *bits*) for storing arguments in argument list. */ |
| |
| #define PARM_BOUNDARY 32 |
| |
| /* Boundary (in *bits*) on which stack pointer should be aligned. */ |
| |
| #define STACK_BOUNDARY 32 |
| |
| /* Allocation boundary (in *bits*) for the code of a function. */ |
| |
| #define FUNCTION_BOUNDARY 32 |
| |
| /* There is no point aligning anything to a rounder boundary than this. */ |
| |
| #define BIGGEST_ALIGNMENT 64 |
| |
| /* Alignment of field after `int : 0' in a structure. */ |
| |
| #define EMPTY_FIELD_BOUNDARY 32 |
| |
| /* Define this if move instructions will actually fail to work when given |
| unaligned data. */ |
| |
| #define STRICT_ALIGNMENT 0 |
| |
| /* Define target floating point format. */ |
| |
| #define TARGET_FLOAT_FORMAT IBM_FLOAT_FORMAT |
| |
| /* Define character mapping for cross-compiling. */ |
| /* but only define it if really needed, since otherwise it will break builds */ |
| |
| #ifdef TARGET_EBCDIC |
| #ifdef HOST_EBCDIC |
| #define MAP_CHARACTER(c) ((char)(c)) |
| #else |
| #define MAP_CHARACTER(c) ((char)mvs_map_char (c)) |
| #endif |
| #endif |
| |
| #ifdef TARGET_HLASM |
| /* HLASM requires #pragma map. */ |
| #define REGISTER_TARGET_PRAGMAS(PFILE) \ |
| cpp_register_pragma (PFILE, 0, "map", i370_pr_map) |
| #endif /* TARGET_HLASM */ |
| |
| /* Define maximum length of page minus page escape overhead. */ |
| |
| #define MAX_MVS_PAGE_LENGTH 4080 |
| |
| /* Define special register allocation order desired. |
| Don't fiddle with this. I did, and I got all sorts of register |
| spill errors when compiling even relatively simple programs... |
| I have no clue why ... |
| E.g. this one is bad: |
| { 0, 1, 2, 9, 8, 7, 6, 5, 10, 15, 14, 12, 3, 4, 16, 17, 18, 19, 11, 13 } |
| */ |
| |
| #define REG_ALLOC_ORDER \ |
| { 0, 1, 2, 3, 14, 15, 12, 10, 9, 8, 7, 6, 5, 4, 16, 17, 18, 19, 11, 13 } |
| |
| /* Standard register usage. */ |
| |
| /* Number of actual hardware registers. The hardware registers are |
| assigned numbers for the compiler from 0 to just below |
| FIRST_PSEUDO_REGISTER. |
| All registers that the compiler knows about must be given numbers, |
| even those that are not normally considered general registers. |
| For the 370, we give the data registers numbers 0-15, |
| and the floating point registers numbers 16-19. */ |
| |
| #define FIRST_PSEUDO_REGISTER 20 |
| |
| /* Define base and page registers. */ |
| |
| #define BASE_REGISTER 3 |
| #define PAGE_REGISTER 4 |
| |
| #ifdef TARGET_HLASM |
| /* 1 for registers that have pervasive standard uses and are not available |
| for the register allocator. These are registers that must have fixed, |
| valid values stored in them for the entire length of the subroutine call, |
| and must not in any way be moved around, jiggered with, etc. That is, |
| they must never be clobbered, and, if clobbered, the register allocator |
| will never restore them back. |
| |
| We use five registers in this special way: |
| -- R3 which is used as the base register |
| -- R4 the page origin table pointer used to load R3, |
| -- R11 the arg pointer. |
| -- R12 the TCA pointer |
| -- R13 the stack (DSA) pointer |
| |
| A fifth register is also exceptional: R14 is used in many branch |
| instructions to hold the target of the branch. Technically, this |
| does not qualify R14 as a register with a long-term meaning; it should |
| be enough, theoretically, to note that these instructions clobber |
| R14, and let the compiler deal with that. In practice, however, |
| the "clobber" directive acts as a barrier to optimization, and the |
| optimizer appears to be unable to perform optimizations around branches. |
| Thus, a much better strategy appears to give R14 a pervasive use; |
| this eliminates it from the register pool witout hurting optimization. |
| |
| There are other registers which have special meanings, but its OK |
| for them to get clobbered, since other allocator config below will |
| make sure that they always have the right value. These are for |
| example: |
| -- R1 the returned structure pointer. |
| -- R10 the static chain reg. |
| -- R15 holds the value a subroutine returns. |
| |
| Notice that it is *almost* safe to mark R11 as available to the allocator. |
| By marking it as a call_used_register, in most cases, the compiler |
| can handle it being clobbered. However, there are a few rare |
| circumstances where the register allocator will allocate r11 and |
| also try to use it as the arg pointer ... thus it must be marked fixed. |
| I think this is a bug, but I can't track it down... |
| */ |
| |
| #define FIXED_REGISTERS \ |
| { 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0 } |
| /*0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19*/ |
| |
| /* 1 for registers not available across function calls. These must include |
| the FIXED_REGISTERS and also any registers that can be used without being |
| saved. |
| The latter must include the registers where values are returned |
| and the register where structure-value addresses are passed. |
| NOTE: all floating registers are undefined across calls. |
| */ |
| |
| #define CALL_USED_REGISTERS \ |
| { 1, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1 } |
| /*0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19*/ |
| |
| /* Return number of consecutive hard regs needed starting at reg REGNO |
| to hold something of mode MODE. |
| This is ordinarily the length in words of a value of mode MODE |
| but can be less for certain modes in special long registers. |
| Note that DCmode (complex double) needs two regs. |
| */ |
| #endif /* TARGET_HLASM */ |
| |
| /* ================= */ |
| #ifdef TARGET_ELF_ABI |
| /* The Linux/ELF ABI uses the same register layout as the |
| * the MVS/OE version, with the following exceptions: |
| * -- r12 (rtca) is not used. |
| */ |
| |
| #define FIXED_REGISTERS \ |
| { 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 0, 1, 1, 0, 0, 0, 0, 0 } |
| /*0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19*/ |
| |
| #define CALL_USED_REGISTERS \ |
| { 1, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1 } |
| /*0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19*/ |
| |
| #endif /* TARGET_ELF_ABI */ |
| /* ================= */ |
| |
| |
| #define HARD_REGNO_NREGS(REGNO, MODE) \ |
| ((REGNO) > 15 ? \ |
| ((GET_MODE_SIZE (MODE) + 2*UNITS_PER_WORD - 1) / (2*UNITS_PER_WORD)) : \ |
| (GET_MODE_SIZE(MODE)+UNITS_PER_WORD-1) / UNITS_PER_WORD) |
| |
| /* Value is 1 if hard register REGNO can hold a value of machine-mode MODE. |
| On the 370, the cpu registers can hold QI, HI, SI, SF and DF. The |
| even registers can hold DI. The floating point registers can hold |
| either SF, DF, SC or DC. */ |
| |
| #define HARD_REGNO_MODE_OK(REGNO, MODE) \ |
| ((REGNO) < 16 ? (((REGNO) & 1) == 0 || \ |
| (((MODE) != DImode) && ((MODE) != DFmode))) \ |
| : ((MODE) == SFmode || (MODE) == DFmode) || \ |
| (MODE) == SCmode || (MODE) == DCmode) |
| |
| /* Value is 1 if it is a good idea to tie two pseudo registers when one has |
| mode MODE1 and one has mode MODE2. |
| If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2, |
| for any hard reg, then this must be 0 for correct output. */ |
| |
| #define MODES_TIEABLE_P(MODE1, MODE2) \ |
| (((MODE1) == SFmode || (MODE1) == DFmode) \ |
| == ((MODE2) == SFmode || (MODE2) == DFmode)) |
| |
| /* Mark external references. */ |
| |
| #define ENCODE_SECTION_INFO(decl) \ |
| if (DECL_EXTERNAL (decl) && TREE_PUBLIC (decl)) \ |
| SYMBOL_REF_FLAG (XEXP (DECL_RTL (decl), 0)) = 1; |
| |
| /* Specify the registers used for certain standard purposes. |
| The values of these macros are register numbers. */ |
| |
| /* 370 PC isn't overloaded on a register. */ |
| |
| /* #define PC_REGNUM */ |
| |
| /* Register to use for pushing function arguments. */ |
| |
| #define STACK_POINTER_REGNUM 13 |
| |
| /* Base register for access to local variables of the function. */ |
| |
| #define FRAME_POINTER_REGNUM 13 |
| |
| /* Value should be nonzero if functions must have frame pointers. |
| Zero means the frame pointer need not be set up (and parms may be |
| accessed via the stack pointer) in functions that seem suitable. |
| This is computed in `reload', in reload1.c. */ |
| |
| #define FRAME_POINTER_REQUIRED 1 |
| |
| /* Base register for access to arguments of the function. */ |
| |
| #define ARG_POINTER_REGNUM 11 |
| |
| /* R10 is register in which static-chain is passed to a function. |
| Static-chaining is done when a nested function references as a global |
| a stack variable of its parent: e.g. |
| int parent_func (int arg) { |
| int x; // x is in parents stack |
| void child_func (void) { x++: } // child references x as global var |
| ... |
| } |
| */ |
| |
| #define STATIC_CHAIN_REGNUM 10 |
| |
| /* R1 is register in which address to store a structure value is passed to |
| a function. This is used only when returning 64-bit long-long in a 32-bit arch |
| and when calling functions that return structs by value. e.g. |
| typedef struct A_s { int a,b,c; } A_t; |
| A_t fun_returns_value (void) { |
| A_t a; a.a=1; a.b=2 a.c=3; |
| return a; |
| } |
| In the above, the storage for the return value is in the callers stack, and |
| the R1 points at that mem location. |
| */ |
| |
| #define STRUCT_VALUE_REGNUM 1 |
| |
| /* 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, ADDR_REGS, DATA_REGS, |
| FP_REGS, ALL_REGS, LIM_REG_CLASSES |
| }; |
| |
| #define GENERAL_REGS DATA_REGS |
| #define N_REG_CLASSES (int) LIM_REG_CLASSES |
| |
| /* Give names of register classes as strings for dump file. */ |
| |
| #define REG_CLASS_NAMES \ |
| { "NO_REGS", "ADDR_REGS", "DATA_REGS", "FP_REGS", "ALL_REGS" } |
| |
| /* Define which registers fit in which classes. This is an initializer for |
| a vector of HARD_REG_SET of length N_REG_CLASSES. */ |
| |
| #define REG_CLASS_CONTENTS {{0}, {0x0fffe}, {0x0ffff}, {0xf0000}, {0xfffff}} |
| |
| /* The same information, inverted: |
| Return the class number of the smallest class containing |
| reg number REGNO. This could be a conditional expression |
| or could index an array. */ |
| |
| #define REGNO_REG_CLASS(REGNO) \ |
| ((REGNO) >= 16 ? FP_REGS : (REGNO) != 0 ? ADDR_REGS : DATA_REGS) |
| |
| /* The class value for index registers, and the one for base regs. */ |
| |
| #define INDEX_REG_CLASS ADDR_REGS |
| #define BASE_REG_CLASS ADDR_REGS |
| |
| /* Get reg_class from a letter such as appears in the machine description. */ |
| |
| #define REG_CLASS_FROM_LETTER(C) \ |
| ((C) == 'a' ? ADDR_REGS : \ |
| ((C) == 'd' ? DATA_REGS : \ |
| ((C) == 'f' ? FP_REGS : NO_REGS))) |
| |
| /* The letters I, J, K, L and M in a register constraint string can be used |
| to stand for particular ranges of immediate operands. |
| This macro defines what the ranges are. |
| C is the letter, and VALUE is a constant value. |
| Return 1 if VALUE is in the range specified by C. */ |
| |
| #define CONST_OK_FOR_LETTER_P(VALUE, C) \ |
| ((C) == 'I' ? (unsigned) (VALUE) < 256 : \ |
| (C) == 'J' ? (unsigned) (VALUE) < 4096 : \ |
| (C) == 'K' ? (VALUE) >= -32768 && (VALUE) < 32768 : 0) |
| |
| /* Similar, but for floating constants, and defining letters G and H. |
| Here VALUE is the CONST_DOUBLE rtx itself. */ |
| |
| #define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) 1 |
| |
| /* see recog.c for details */ |
| #define EXTRA_CONSTRAINT(OP,C) \ |
| ((C) == 'R' ? r_or_s_operand (OP, GET_MODE(OP)) : \ |
| (C) == 'S' ? s_operand (OP, GET_MODE(OP)) : 0) \ |
| |
| /* Given an rtx X being reloaded into a reg required to be in class CLASS, |
| return the class of reg to actually use. In general this is just CLASS; |
| but on some machines in some cases it is preferable to use a more |
| restrictive class. |
| |
| XXX We reload CONST_INT's into ADDR not DATA regs because on certain |
| rare occasions when lots of egisters are spilled, reload() will try |
| to put a const int into r0 and then use r0 as an index register. |
| */ |
| |
| #define PREFERRED_RELOAD_CLASS(X, CLASS) \ |
| (GET_CODE(X) == CONST_DOUBLE ? FP_REGS : \ |
| GET_CODE(X) == CONST_INT ? (reload_in_progress ? ADDR_REGS : DATA_REGS) : \ |
| GET_CODE(X) == LABEL_REF || \ |
| GET_CODE(X) == SYMBOL_REF || \ |
| GET_CODE(X) == CONST ? ADDR_REGS : (CLASS)) |
| |
| /* Return the maximum number of consecutive registers needed to represent |
| mode MODE in a register of class CLASS. |
| Note that DCmode (complex double) needs two regs. |
| */ |
| |
| #define CLASS_MAX_NREGS(CLASS, MODE) \ |
| ((CLASS) == FP_REGS ? \ |
| ((GET_MODE_SIZE (MODE) + 2*UNITS_PER_WORD - 1) / (2*UNITS_PER_WORD)) : \ |
| (GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD) |
| |
| /* Stack layout; function entry, exit and calling. */ |
| |
| /* Define this if pushing a word on the stack makes the stack pointer a |
| smaller address. */ |
| /* ------------------------------------------------------------------- */ |
| |
| /* ================= */ |
| #ifdef TARGET_HLASM |
| /* #define STACK_GROWS_DOWNWARD */ |
| |
| /* Define this if the nominal address of the stack frame is at the |
| high-address end of the local variables; that is, each additional local |
| variable allocated goes at a more negative offset in the frame. */ |
| |
| /* #define FRAME_GROWS_DOWNWARD */ |
| |
| /* Offset within stack frame to start allocating local variables at. |
| If FRAME_GROWS_DOWNWARD, this is the offset to the END of the |
| first local allocated. Otherwise, it is the offset to the BEGINNING |
| of the first local allocated. */ |
| |
| #define STARTING_FRAME_OFFSET \ |
| (STACK_POINTER_OFFSET + current_function_outgoing_args_size) |
| |
| #define INITIAL_FRAME_POINTER_OFFSET(DEPTH) (DEPTH) = STARTING_FRAME_OFFSET |
| |
| /* If we generate an insn to push BYTES bytes, this says how many the stack |
| pointer really advances by. On the 370, we have no push instruction. */ |
| |
| #endif /* TARGET_HLASM */ |
| |
| /* ================= */ |
| #ifdef TARGET_ELF_ABI |
| |
| /* With ELF/Linux, stack is placed at large virtual addrs and grows down. |
| But we want the compiler to generate posistive displacements from the |
| stack pointer, and so we make the frame lie above the stack. */ |
| |
| #define STACK_GROWS_DOWNWARD |
| /* #define FRAME_GROWS_DOWNWARD */ |
| |
| /* Offset within stack frame to start allocating local variables at. |
| This is the offset to the BEGINNING of the first local allocated. */ |
| |
| #define STARTING_FRAME_OFFSET \ |
| (STACK_POINTER_OFFSET + current_function_outgoing_args_size) |
| |
| #define INITIAL_FRAME_POINTER_OFFSET(DEPTH) (DEPTH) = STARTING_FRAME_OFFSET |
| |
| #endif /* TARGET_ELF_ABI */ |
| /* ================= */ |
| |
| /* #define PUSH_ROUNDING(BYTES) */ |
| |
| /* Accumulate the outgoing argument count so we can request the right |
| DSA size and determine stack offset. */ |
| |
| #define ACCUMULATE_OUTGOING_ARGS 1 |
| |
| /* Define offset from stack pointer, to location where a parm can be |
| pushed. */ |
| |
| #define STACK_POINTER_OFFSET 148 |
| |
| /* Offset of first parameter from the argument pointer register value. */ |
| |
| #define FIRST_PARM_OFFSET(FNDECL) 0 |
| |
| /* 1 if N is a possible register number for function argument passing. |
| On the 370, no registers are used in this way. */ |
| |
| #define FUNCTION_ARG_REGNO_P(N) 0 |
| |
| /* Define a data type for recording info about an argument list during |
| the scan of that argument list. This data type should hold all |
| necessary information about the function itself and about the args |
| processed so far, enough to enable macros such as FUNCTION_ARG to |
| determine where the next arg should go. */ |
| |
| #define CUMULATIVE_ARGS int |
| |
| /* 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) ((CUM) = 0) |
| |
| /* Update the data in CUM to advance over an argument of mode MODE and |
| data type TYPE. (TYPE is null for libcalls where that information |
| may not be available.) */ |
| |
| #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \ |
| ((CUM) += ((MODE) == DFmode || (MODE) == SFmode \ |
| ? 256 \ |
| : (MODE) != BLKmode \ |
| ? (GET_MODE_SIZE (MODE) + 3) / 4 \ |
| : (int_size_in_bytes (TYPE) + 3) / 4)) |
| |
| /* Define where to put the arguments to a function. Value is zero to push |
| the argument on the stack, or a hard register in which to store the |
| argument. */ |
| |
| #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) 0 |
| |
| /* For an arg passed partly in registers and partly in memory, this is the |
| number of registers used. For args passed entirely in registers or |
| entirely in memory, zero. */ |
| |
| #define FUNCTION_ARG_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED) 0 |
| |
| /* Define if returning from a function call automatically pops the |
| arguments described by the number-of-args field in the call. */ |
| |
| #define RETURN_POPS_ARGS(FUNDECL,FUNTYPE,SIZE) 0 |
| |
| /* The FUNCTION_VALUE macro defines how to find the value returned by a |
| function. VALTYPE is the data type of the value (as a tree). |
| If the precise function being called is known, FUNC is its FUNCTION_DECL; |
| otherwise, FUNC is NULL. |
| |
| On the 370 the return value is in R15 or R16. However, |
| DImode (64-bit ints) scalars need to get returned on the stack, |
| with r15 pointing to the location. To accomplish this, we define |
| the RETURN_IN_MEMORY macro to be true for both blockmode (structures) |
| and the DImode scalars. |
| */ |
| |
| #define RET_REG(MODE) \ |
| (((MODE) == DCmode || (MODE) == SCmode || (MODE) == TFmode || (MODE) == DFmode || (MODE) == SFmode) ? 16 : 15) |
| |
| #define FUNCTION_VALUE(VALTYPE, FUNC) \ |
| gen_rtx_REG (TYPE_MODE (VALTYPE), RET_REG (TYPE_MODE (VALTYPE))) |
| |
| #define RETURN_IN_MEMORY(VALTYPE) \ |
| ((DImode == TYPE_MODE (VALTYPE)) || (BLKmode == TYPE_MODE (VALTYPE))) |
| |
| /* Define how to find the value returned by a library function assuming |
| the value has mode MODE. */ |
| |
| #define LIBCALL_VALUE(MODE) gen_rtx_REG (MODE, RET_REG (MODE)) |
| |
| /* 1 if N is a possible register number for a function value. |
| On the 370 under C/370, R15 and R16 are thus used. */ |
| |
| #define FUNCTION_VALUE_REGNO_P(N) ((N) == 15 || (N) == 16) |
| |
| /* This macro definition sets up a default value for `main' to return. */ |
| |
| #define DEFAULT_MAIN_RETURN c_expand_return (integer_zero_node) |
| |
| |
| /* Output assembler code for a block containing the constant parts of a |
| trampoline, leaving space for the variable parts. |
| |
| On the 370, the trampoline contains these instructions: |
| |
| BALR 14,0 |
| USING *,14 |
| L STATIC_CHAIN_REGISTER,X |
| L 15,Y |
| BR 15 |
| X DS 0F |
| Y DS 0F */ |
| /* |
| I am confused as to why this emitting raw binary, instead of instructions ... |
| see for example, rs6000/rs000.c for an example of a different way to |
| do this ... especially since BASR should probably be substituted for BALR. |
| */ |
| |
| #define TRAMPOLINE_TEMPLATE(FILE) \ |
| { \ |
| assemble_aligned_integer (2, GEN_INT (0x05E0)); \ |
| assemble_aligned_integer (2, GEN_INT (0x5800 | STATIC_CHAIN_REGNUM << 4)); \ |
| assemble_aligned_integer (2, GEN_INT (0xE00A)); \ |
| assemble_aligned_integer (2, GEN_INT (0x58F0)); \ |
| assemble_aligned_integer (2, GEN_INT (0xE00E)); \ |
| assemble_aligned_integer (2, GEN_INT (0x07FF)); \ |
| assemble_aligned_integer (2, const0_rtx); \ |
| assemble_aligned_integer (2, const0_rtx); \ |
| assemble_aligned_integer (2, const0_rtx); \ |
| assemble_aligned_integer (2, const0_rtx); \ |
| } |
| |
| /* Length in units of the trampoline for entering a nested function. */ |
| |
| #define TRAMPOLINE_SIZE 20 |
| |
| /* Emit RTL insns to initialize the variable parts of a trampoline. */ |
| |
| #define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT) \ |
| { \ |
| emit_move_insn (gen_rtx_MEM (SImode, plus_constant (TRAMP, 12)), CXT); \ |
| emit_move_insn (gen_rtx_MEM (SImode, plus_constant (TRAMP, 16)), FNADDR); \ |
| } |
| |
| /* Define EXIT_IGNORE_STACK if, when returning from a function, the stack |
| pointer does not matter (provided there is a frame pointer). */ |
| |
| #define EXIT_IGNORE_STACK 1 |
| |
| /* Addressing modes, and classification of registers for them. */ |
| |
| /* #define HAVE_POST_INCREMENT */ |
| /* #define HAVE_POST_DECREMENT */ |
| |
| /* #define HAVE_PRE_DECREMENT */ |
| /* #define HAVE_PRE_INCREMENT */ |
| |
| /* These assume that REGNO is a hard or pseudo reg number. They give |
| nonzero only if REGNO is a hard reg of the suitable class or a pseudo |
| reg currently allocated to a suitable hard reg. |
| These definitions are NOT overridden anywhere. */ |
| |
| #define REGNO_OK_FOR_INDEX_P(REGNO) \ |
| (((REGNO) > 0 && (REGNO) < 16) \ |
| || (reg_renumber[REGNO] > 0 && reg_renumber[REGNO] < 16)) |
| |
| #define REGNO_OK_FOR_BASE_P(REGNO) REGNO_OK_FOR_INDEX_P(REGNO) |
| |
| #define REGNO_OK_FOR_DATA_P(REGNO) \ |
| ((REGNO) < 16 || (unsigned) reg_renumber[REGNO] < 16) |
| |
| #define REGNO_OK_FOR_FP_P(REGNO) \ |
| ((unsigned) ((REGNO) - 16) < 4 || (unsigned) (reg_renumber[REGNO] - 16) < 4) |
| |
| /* Now macros that check whether X is a register and also, |
| strictly, whether it is in a specified class. */ |
| |
| /* 1 if X is a data register. */ |
| |
| #define DATA_REG_P(X) (REG_P (X) && REGNO_OK_FOR_DATA_P (REGNO (X))) |
| |
| /* 1 if X is an fp register. */ |
| |
| #define FP_REG_P(X) (REG_P (X) && REGNO_OK_FOR_FP_P (REGNO (X))) |
| |
| /* 1 if X is an address register. */ |
| |
| #define ADDRESS_REG_P(X) (REG_P (X) && REGNO_OK_FOR_BASE_P (REGNO (X))) |
| |
| /* Maximum number of registers that can appear in a valid memory address. */ |
| |
| #define MAX_REGS_PER_ADDRESS 2 |
| |
| /* Recognize any constant value that is a valid address. */ |
| |
| #define CONSTANT_ADDRESS_P(X) \ |
| (GET_CODE (X) == LABEL_REF || GET_CODE (X) == SYMBOL_REF \ |
| || GET_CODE (X) == CONST_INT || GET_CODE (X) == CONST_DOUBLE \ |
| || (GET_CODE (X) == CONST \ |
| && GET_CODE (XEXP (XEXP (X, 0), 0)) == LABEL_REF) \ |
| || (GET_CODE (X) == CONST \ |
| && GET_CODE (XEXP (XEXP (X, 0), 0)) == SYMBOL_REF \ |
| && !SYMBOL_REF_FLAG (XEXP (XEXP (X, 0), 0)))) |
| |
| /* Nonzero if the constant value X is a legitimate general operand. |
| It is given that X satisfies CONSTANT_P or is a CONST_DOUBLE. */ |
| |
| #define LEGITIMATE_CONSTANT_P(X) 1 |
| |
| /* The macros REG_OK_FOR..._P assume that the arg is a REG rtx and check |
| its validity for a certain class. We have two alternate definitions |
| for each of them. The usual definition accepts all pseudo regs; the |
| other rejects them all. The symbol REG_OK_STRICT causes the latter |
| definition to be used. |
| |
| Most source files want to accept pseudo regs in the hope that they will |
| get allocated to the class that the insn wants them to be in. |
| Some source files that are used after register allocation |
| need to be strict. */ |
| |
| #ifndef REG_OK_STRICT |
| |
| /* Nonzero if X is a hard reg that can be used as an index or if it is |
| a pseudo reg. */ |
| |
| #define REG_OK_FOR_INDEX_P(X) \ |
| ((REGNO(X) > 0 && REGNO(X) < 16) || REGNO(X) >= 20) |
| |
| /* Nonzero if X is a hard reg that can be used as a base reg or if it is |
| a pseudo reg. */ |
| |
| #define REG_OK_FOR_BASE_P(X) REG_OK_FOR_INDEX_P(X) |
| |
| #else /* REG_OK_STRICT */ |
| |
| /* Nonzero if X is a hard reg that can be used as an index. */ |
| |
| #define REG_OK_FOR_INDEX_P(X) REGNO_OK_FOR_INDEX_P(REGNO(X)) |
| |
| /* 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)) |
| |
| #endif /* REG_OK_STRICT */ |
| |
| /* GO_IF_LEGITIMATE_ADDRESS recognizes an RTL expression that is a |
| valid memory address for an instruction. |
| The MODE argument is the machine mode for the MEM expression |
| that wants to use this address. |
| |
| The other macros defined here are used only in GO_IF_LEGITIMATE_ADDRESS, |
| except for CONSTANT_ADDRESS_P which is actually machine-independent. |
| */ |
| |
| #define COUNT_REGS(X, REGS, FAIL) \ |
| if (REG_P (X)) { \ |
| if (REG_OK_FOR_BASE_P (X)) REGS += 1; \ |
| else goto FAIL; \ |
| } \ |
| else if (GET_CODE (X) != CONST_INT || (unsigned) INTVAL (X) >= 4096) \ |
| goto FAIL; |
| |
| #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR) \ |
| { \ |
| if (REG_P (X) && REG_OK_FOR_BASE_P (X)) \ |
| goto ADDR; \ |
| if (GET_CODE (X) == PLUS) \ |
| { \ |
| int regs = 0; \ |
| rtx x0 = XEXP (X, 0); \ |
| rtx x1 = XEXP (X, 1); \ |
| if (GET_CODE (x0) == PLUS) \ |
| { \ |
| COUNT_REGS (XEXP (x0, 0), regs, FAIL); \ |
| COUNT_REGS (XEXP (x0, 1), regs, FAIL); \ |
| COUNT_REGS (x1, regs, FAIL); \ |
| if (regs == 2) \ |
| goto ADDR; \ |
| } \ |
| else if (GET_CODE (x1) == PLUS) \ |
| { \ |
| COUNT_REGS (x0, regs, FAIL); \ |
| COUNT_REGS (XEXP (x1, 0), regs, FAIL); \ |
| COUNT_REGS (XEXP (x1, 1), regs, FAIL); \ |
| if (regs == 2) \ |
| goto ADDR; \ |
| } \ |
| else \ |
| { \ |
| COUNT_REGS (x0, regs, FAIL); \ |
| COUNT_REGS (x1, regs, FAIL); \ |
| if (regs != 0) \ |
| goto ADDR; \ |
| } \ |
| } \ |
| FAIL: ; \ |
| } |
| |
| /* The 370 has no mode dependent addresses. */ |
| |
| #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR, LABEL) |
| |
| /* Macro: LEGITIMIZE_ADDRESS(X, OLDX, MODE, WIN) |
| Try machine-dependent ways of modifying an illegitimate address |
| to be legitimate. If we find one, return the new, valid address. |
| This macro is used in only one place: `memory_address' in explow.c. |
| |
| Several comments: |
| (1) It's not obvious that this macro results in better code |
| than its omission does. For historical reasons we leave it in. |
| |
| (2) This macro may be (???) implicated in the accidental promotion |
| or RS operand to RX operands, which bombs out any RS, SI, SS |
| instruction that was expecting a simple address. Note that |
| this occurs fairly rarely ... |
| |
| (3) There is a bug somewhere that causes either r4 to be spilled, |
| or causes r0 to be used as a base register. Changeing the macro |
| below will make the bug move around, but will not make it go away |
| ... Note that this is a rare bug ... |
| |
| */ |
| |
| #define LEGITIMIZE_ADDRESS(X, OLDX, MODE, WIN) \ |
| { \ |
| if (GET_CODE (X) == PLUS && CONSTANT_ADDRESS_P (XEXP (X, 1))) \ |
| (X) = gen_rtx_PLUS (SImode, XEXP (X, 0), \ |
| copy_to_mode_reg (SImode, XEXP (X, 1))); \ |
| if (GET_CODE (X) == PLUS && CONSTANT_ADDRESS_P (XEXP (X, 0))) \ |
| (X) = gen_rtx_PLUS (SImode, XEXP (X, 1), \ |
| copy_to_mode_reg (SImode, XEXP (X, 0))); \ |
| if (GET_CODE (X) == PLUS && GET_CODE (XEXP (X, 0)) == MULT) \ |
| (X) = gen_rtx_PLUS (SImode, XEXP (X, 1), \ |
| force_operand (XEXP (X, 0), 0)); \ |
| if (GET_CODE (X) == PLUS && GET_CODE (XEXP (X, 1)) == MULT) \ |
| (X) = gen_rtx_PLUS (SImode, XEXP (X, 0), \ |
| force_operand (XEXP (X, 1), 0)); \ |
| if (memory_address_p (MODE, X)) \ |
| goto WIN; \ |
| } |
| |
| /* Specify the machine mode that this machine uses for the index in the |
| tablejump instruction. */ |
| |
| #define CASE_VECTOR_MODE SImode |
| |
| /* Define this if the tablejump instruction expects the table to contain |
| offsets from the address of the table. |
| Do not define this if the table should contain absolute addresses. */ |
| |
| /* #define CASE_VECTOR_PC_RELATIVE */ |
| |
| /* Specify the tree operation to be used to convert reals to integers. */ |
| |
| #define IMPLICIT_FIX_EXPR FIX_ROUND_EXPR |
| |
| /* Define this if fixuns_trunc is the same as fix_trunc. */ |
| |
| #define FIXUNS_TRUNC_LIKE_FIX_TRUNC |
| |
| /* We use "unsigned char" as default. */ |
| |
| #define DEFAULT_SIGNED_CHAR 0 |
| |
| /* This is the kind of divide that is easiest to do in the general case. */ |
| |
| #define EASY_DIV_EXPR TRUNC_DIV_EXPR |
| |
| /* Max number of bytes we can move from memory to memory in one reasonably |
| fast instruction. */ |
| |
| #define MOVE_MAX 256 |
| |
| /* Define this if zero-extension is slow (more than one real instruction). */ |
| |
| #define SLOW_ZERO_EXTEND 1 |
| |
| /* Nonzero if access to memory by bytes is slow and undesirable. */ |
| |
| #define SLOW_BYTE_ACCESS 1 |
| |
| /* Define if shifts truncate the shift count which implies one can omit |
| a sign-extension or zero-extension of a shift count. */ |
| |
| /* #define SHIFT_COUNT_TRUNCATED */ |
| |
| /* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits |
| is done just by pretending it is already truncated. */ |
| |
| #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) (OUTPREC != 16) |
| |
| /* We assume that the store-condition-codes instructions store 0 for false |
| and some other value for true. This is the value stored for true. */ |
| |
| /* #define STORE_FLAG_VALUE (-1) */ |
| |
| /* When a prototype says `char' or `short', really pass an `int'. */ |
| |
| #define PROMOTE_PROTOTYPES 1 |
| |
| /* Don't perform CSE on function addresses. */ |
| |
| #define NO_FUNCTION_CSE |
| |
| /* 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. */ |
| |
| #define Pmode SImode |
| |
| /* A function address in a call instruction is a byte address (for |
| indexing purposes) so give the MEM rtx a byte's mode. */ |
| |
| #define FUNCTION_MODE QImode |
| |
| /* Compute the cost of computing a constant rtl expression RTX whose |
| rtx-code is CODE. The body of this macro is a portion of a switch |
| statement. If the code is computed here, return it with a return |
| statement. Otherwise, break from the switch. */ |
| |
| #define CONST_COSTS(RTX, CODE, OUTERCODE) \ |
| case CONST_INT: \ |
| if ((unsigned) INTVAL (RTX) < 0xfff) return 1; \ |
| case CONST: \ |
| case LABEL_REF: \ |
| case SYMBOL_REF: \ |
| return 2; \ |
| case CONST_DOUBLE: \ |
| return 4; |
| |
| /* A C statement (sans semicolon) to update the integer variable COST |
| based on the relationship between INSN that is dependent on |
| DEP_INSN through the dependence LINK. The default is to make no |
| adjustment to COST. This can be used for example to specify to |
| the scheduler that an output- or anti-dependence does not incur |
| the same cost as a data-dependence. |
| |
| We will want to use this to indicate that there is a cost associated |
| with the loading, followed by use of base registers ... |
| #define ADJUST_COST (INSN, LINK, DEP_INSN, COST) |
| */ |
| |
| /* Tell final.c how to eliminate redundant test instructions. */ |
| |
| /* Here we define machine-dependent flags and fields in cc_status |
| (see `conditions.h'). */ |
| |
| /* Store in cc_status the expressions that the condition codes will |
| describe after execution of an instruction whose pattern is EXP. |
| Do not alter them if the instruction would not alter the cc's. |
| |
| On the 370, load insns do not alter the cc's. However, in some |
| cases these instructions can make it possibly invalid to use the |
| saved cc's. In those cases we clear out some or all of the saved |
| cc's so they won't be used. |
| |
| Note that only some arith instructions set the CC. These include |
| add, subtract, complement, various shifts. Note that multiply |
| and divide do *not* set set the CC. Therefore, in the code below, |
| don't set the status for MUL, DIV, etc. |
| |
| Note that the bitwise ops set the condition code, but not in a |
| way that we can make use of it. So we treat these as clobbering, |
| rather than setting the CC. These are clobbered in the individual |
| instruction patterns that use them. Use CC_STATUS_INIT to clobber. |
| */ |
| |
| #define NOTICE_UPDATE_CC(EXP, INSN) \ |
| { \ |
| rtx exp = (EXP); \ |
| if (GET_CODE (exp) == PARALLEL) /* Check this */ \ |
| exp = XVECEXP (exp, 0, 0); \ |
| if (GET_CODE (exp) != SET) \ |
| CC_STATUS_INIT; \ |
| else \ |
| { \ |
| if (XEXP (exp, 0) == cc0_rtx) \ |
| { \ |
| cc_status.value1 = XEXP (exp, 0); \ |
| cc_status.value2 = XEXP (exp, 1); \ |
| cc_status.flags = 0; \ |
| } \ |
| else \ |
| { \ |
| if (cc_status.value1 \ |
| && reg_mentioned_p (XEXP (exp, 0), cc_status.value1)) \ |
| cc_status.value1 = 0; \ |
| if (cc_status.value2 \ |
| && reg_mentioned_p (XEXP (exp, 0), cc_status.value2)) \ |
| cc_status.value2 = 0; \ |
| switch (GET_CODE (XEXP (exp, 1))) \ |
| { \ |
| case PLUS: case MINUS: case NEG: \ |
| case NOT: case ABS: \ |
| CC_STATUS_SET (XEXP (exp, 0), XEXP (exp, 1)); \ |
| \ |
| /* mult and div don't set any cc codes !! */ \ |
| case MULT: /* case UMULT: */ case DIV: case UDIV: \ |
| /* and, or and xor set the cc's the wrong way !! */ \ |
| case AND: case IOR: case XOR: \ |
| /* some shifts set the CC some don't. */ \ |
| case ASHIFT: case ASHIFTRT: \ |
| do {} while (0); \ |
| default: \ |
| break; \ |
| } \ |
| } \ |
| } \ |
| } |
| |
| |
| #define CC_STATUS_SET(V1, V2) \ |
| { \ |
| cc_status.flags = 0; \ |
| cc_status.value1 = (V1); \ |
| cc_status.value2 = (V2); \ |
| if (cc_status.value1 \ |
| && reg_mentioned_p (cc_status.value1, cc_status.value2)) \ |
| cc_status.value2 = 0; \ |
| } |
| |
| #define OUTPUT_JUMP(NORMAL, FLOAT, NO_OV) \ |
| { if (cc_status.flags & CC_NO_OVERFLOW) return NO_OV; return NORMAL; } |
| |
| /* ------------------------------------------ */ |
| /* Control the assembler format that we output. */ |
| |
| /* Define standard character escape sequences for non-ASCII targets |
| only. */ |
| |
| #ifdef TARGET_EBCDIC |
| #define TARGET_ESC 39 |
| #define TARGET_BELL 47 |
| #define TARGET_BS 22 |
| #define TARGET_TAB 5 |
| #define TARGET_NEWLINE 21 |
| #define TARGET_VT 11 |
| #define TARGET_FF 12 |
| #define TARGET_CR 13 |
| #endif |
| |
| /* ======================================================== */ |
| |
| #ifdef TARGET_HLASM |
| #define TEXT_SECTION_ASM_OP "* Program text area" |
| #define DATA_SECTION_ASM_OP "* Program data area" |
| #define INIT_SECTION_ASM_OP "* Program initialization area" |
| #define SHARED_SECTION_ASM_OP "* Program shared data" |
| #define CTOR_LIST_BEGIN /* NO OP */ |
| #define CTOR_LIST_END /* NO OP */ |
| #define MAX_MVS_LABEL_SIZE 8 |
| |
| /* How to refer to registers in assembler output. This sequence is |
| indexed by compiler's hard-register-number (see above). */ |
| |
| #define REGISTER_NAMES \ |
| { "0", "1", "2", "3", "4", "5", "6", "7", \ |
| "8", "9", "10", "11", "12", "13", "14", "15", \ |
| "0", "2", "4", "6" \ |
| } |
| |
| #define ASM_FILE_START(FILE) \ |
| { fputs ("\tRMODE\tANY\n", FILE); \ |
| fputs ("\tCSECT\n", FILE); } |
| |
| #define ASM_FILE_END(FILE) fputs ("\tEND\n", FILE); |
| #define ASM_COMMENT_START "*" |
| #define ASM_APP_OFF "" |
| #define ASM_APP_ON "" |
| |
| #define ASM_OUTPUT_LABEL(FILE, NAME) \ |
| { assemble_name (FILE, NAME); fputs ("\tEQU\t*\n", FILE); } |
| |
| #define ASM_OUTPUT_EXTERNAL(FILE, DECL, NAME) \ |
| { \ |
| char temp[MAX_MVS_LABEL_SIZE + 1]; \ |
| if (mvs_check_alias (NAME, temp) == 2) \ |
| { \ |
| fprintf (FILE, "%s\tALIAS\tC'%s'\n", temp, NAME); \ |
| } \ |
| } |
| |
| #define ASM_GLOBALIZE_LABEL(FILE, NAME) \ |
| { \ |
| char temp[MAX_MVS_LABEL_SIZE + 1]; \ |
| if (mvs_check_alias (NAME, temp) == 2) \ |
| { \ |
| fprintf (FILE, "%s\tALIAS\tC'%s'\n", temp, NAME); \ |
| } \ |
| fputs ("\tENTRY\t", FILE); \ |
| assemble_name (FILE, NAME); \ |
| fputs ("\n", FILE); \ |
| } |
| |
| /* MVS externals are limited to 8 characters, upper case only. |
| The '_' is mapped to '@', except for MVS functions, then '#'. */ |
| |
| |
| #define ASM_OUTPUT_LABELREF(FILE, NAME) \ |
| { \ |
| char *bp, ch, temp[MAX_MVS_LABEL_SIZE + 1]; \ |
| if (!mvs_get_alias (NAME, temp)) \ |
| strcpy (temp, NAME); \ |
| if (!strcmp (temp,"main")) \ |
| strcpy (temp,"gccmain"); \ |
| if (mvs_function_check (temp)) \ |
| ch = '#'; \ |
| else \ |
| ch = '@'; \ |
| for (bp = temp; *bp; bp++) \ |
| *bp = (*bp == '_' ? ch : TOUPPER (*bp)); \ |
| fprintf (FILE, "%s", temp); \ |
| } |
| |
| #define ASM_GENERATE_INTERNAL_LABEL(LABEL, PREFIX, NUM) \ |
| sprintf (LABEL, "*%s%d", PREFIX, NUM) |
| |
| /* Generate internal label. Since we can branch here from off page, we |
| must reload the base register. */ |
| |
| #define ASM_OUTPUT_INTERNAL_LABEL(FILE, PREFIX, NUM) \ |
| { \ |
| if (!strcmp (PREFIX,"L")) \ |
| { \ |
| mvs_add_label(NUM); \ |
| } \ |
| fprintf (FILE, "%s%d\tEQU\t*\n", PREFIX, NUM); \ |
| } |
| |
| /* Generate case label. For HLASM we can change to the data CSECT |
| and put the vectors out of the code body. The assembler just |
| concatenates CSECTs with the same name. */ |
| |
| #define ASM_OUTPUT_CASE_LABEL(FILE, PREFIX, NUM, TABLE) \ |
| fprintf (FILE, "\tDS\t0F\n"); \ |
| fprintf (FILE,"\tCSECT\n"); \ |
| fprintf (FILE, "%s%d\tEQU\t*\n", PREFIX, NUM) |
| |
| /* Put the CSECT back to the code body */ |
| |
| #define ASM_OUTPUT_CASE_END(FILE, NUM, TABLE) \ |
| assemble_name (FILE, mvs_function_name); \ |
| fputs ("\tCSECT\n", FILE); |
| |
| /* This is how to output an element of a case-vector that is absolute. */ |
| |
| #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \ |
| fprintf (FILE, "\tDC\tA(L%d)\n", VALUE) |
| |
| /* This is how to output an element of a case-vector that is relative. */ |
| |
| #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \ |
| fprintf (FILE, "\tDC\tA(L%d-L%d)\n", VALUE, REL) |
| |
| /* This is how to output an insn to push a register on the stack. |
| It need not be very fast code. |
| Right now, PUSH & POP are used only when profiling is enabled, |
| and then, only to push the static chain reg and the function struct |
| value reg, and only if those are used. Since profiling is not |
| supported anyway, punt on this. */ |
| |
| #define ASM_OUTPUT_REG_PUSH(FILE, REGNO) \ |
| mvs_check_page (FILE, 8, 4); \ |
| fprintf (FILE, "\tS\t13,=F'4'\n\tST\t%s,%d(13)\n", \ |
| reg_names[REGNO], STACK_POINTER_OFFSET) |
| |
| /* This is how to output an insn to pop a register from the stack. |
| It need not be very fast code. */ |
| |
| #define ASM_OUTPUT_REG_POP(FILE, REGNO) \ |
| mvs_check_page (FILE, 8, 0); \ |
| fprintf (FILE, "\tL\t%s,%d(13)\n\tLA\t13,4(13)\n", \ |
| reg_names[REGNO], STACK_POINTER_OFFSET) |
| |
| /* This is how to output an assembler line defining a `double' constant. */ |
| #define ASM_OUTPUT_DOUBLE(FILE, VALUE) \ |
| fprintf (FILE, "\tDC\tD'%.18G'\n", (VALUE)) |
| |
| /* This is how to output an assembler line defining a `float' constant. */ |
| #define ASM_OUTPUT_FLOAT(FILE, VALUE) \ |
| fprintf (FILE, "\tDC\tE'%.9G'\n", (VALUE)) |
| |
| /* This outputs a text string. The string are chopped up to fit into |
| an 80 byte record. Also, control and special characters, interpreted |
| by the IBM assembler, are output numerically. */ |
| |
| #define MVS_ASCII_TEXT_LENGTH 48 |
| |
| #define ASM_OUTPUT_ASCII(FILE, PTR, LEN) \ |
| { \ |
| size_t i, limit = (LEN); \ |
| int j; \ |
| for (j = 0, i = 0; i < limit; j++, i++) \ |
| { \ |
| int c = (PTR)[i]; \ |
| if (ISCNTRL (c) || c == '&') \ |
| { \ |
| if (j % MVS_ASCII_TEXT_LENGTH != 0 ) \ |
| fprintf (FILE, "'\n"); \ |
| j = -1; \ |
| if (c == '&') c = MAP_CHARACTER (c); \ |
| fprintf (FILE, "\tDC\tX'%X'\n", c ); \ |
| } \ |
| else \ |
| { \ |
| if (j % MVS_ASCII_TEXT_LENGTH == 0) \ |
| fprintf (FILE, "\tDC\tC'"); \ |
| if ( c == '\'' ) \ |
| fprintf (FILE, "%c%c", c, c); \ |
| else \ |
| fprintf (FILE, "%c", c); \ |
| if (j % MVS_ASCII_TEXT_LENGTH == MVS_ASCII_TEXT_LENGTH - 1) \ |
| fprintf (FILE, "'\n" ); \ |
| } \ |
| } \ |
| if (j % MVS_ASCII_TEXT_LENGTH != 0) \ |
| fprintf (FILE, "'\n"); \ |
| } |
| |
| /* This is how to output an assembler line that says to advance the |
| location counter to a multiple of 2**LOG bytes. */ |
| |
| #define ASM_OUTPUT_ALIGN(FILE, LOG) \ |
| if (LOG) \ |
| { \ |
| if ((LOG) == 1) \ |
| fprintf (FILE, "\tDS\t0H\n" ); \ |
| else \ |
| fprintf (FILE, "\tDS\t0F\n" ); \ |
| } \ |
| |
| /* The maximum length of memory that the IBM assembler will allow in one |
| DS operation. */ |
| |
| #define MAX_CHUNK 32767 |
| |
| /* A C statement to output to the stdio stream FILE an assembler |
| instruction to advance the location counter by SIZE bytes. Those |
| bytes should be zero when loaded. */ |
| |
| #define ASM_OUTPUT_SKIP(FILE, SIZE) \ |
| { \ |
| int s, k; \ |
| for (s = (SIZE); s > 0; s -= MAX_CHUNK) \ |
| { \ |
| if (s > MAX_CHUNK) \ |
| k = MAX_CHUNK; \ |
| else \ |
| k = s; \ |
| fprintf (FILE, "\tDS\tXL%d\n", k); \ |
| } \ |
| } |
| |
| /* A C statement (sans semicolon) to output to the stdio stream |
| FILE the assembler definition of a common-label named NAME whose |
| size is SIZE bytes. The variable ROUNDED is the size rounded up |
| to whatever alignment the caller wants. */ |
| |
| #define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED) \ |
| { \ |
| char temp[MAX_MVS_LABEL_SIZE + 1]; \ |
| if (mvs_check_alias(NAME, temp) == 2) \ |
| { \ |
| fprintf (FILE, "%s\tALIAS\tC'%s'\n", temp, NAME); \ |
| } \ |
| fputs ("\tENTRY\t", FILE); \ |
| assemble_name (FILE, NAME); \ |
| fputs ("\n", FILE); \ |
| fprintf (FILE, "\tDS\t0F\n"); \ |
| ASM_OUTPUT_LABEL (FILE,NAME); \ |
| ASM_OUTPUT_SKIP (FILE,SIZE); \ |
| } |
| |
| /* A C statement (sans semicolon) to output to the stdio stream |
| FILE the assembler definition of a local-common-label named NAME |
| whose size is SIZE bytes. The variable ROUNDED is the size |
| rounded up to whatever alignment the caller wants. */ |
| |
| #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED) \ |
| { \ |
| fprintf (FILE, "\tDS\t0F\n"); \ |
| ASM_OUTPUT_LABEL (FILE,NAME); \ |
| ASM_OUTPUT_SKIP (FILE,SIZE); \ |
| } |
| |
| /* Store in OUTPUT a string (made with alloca) containing an |
| assembler-name for a local static variable named NAME. |
| LABELNO is an integer which is different for each call. */ |
| |
| #define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \ |
| { \ |
| (OUTPUT) = (char *) alloca (strlen ((NAME)) + 10); \ |
| sprintf ((OUTPUT), "%s%d", (NAME), (LABELNO)); \ |
| } |
| |
| /* Print operand XV (an rtx) in assembler syntax to file FILE. |
| CODE is a letter or dot (`z' in `%z0') or 0 if no letter was specified. |
| For `%' followed by punctuation, CODE is the punctuation and XV is null. */ |
| |
| #define PRINT_OPERAND(FILE, XV, CODE) \ |
| { \ |
| switch (GET_CODE (XV)) \ |
| { \ |
| static char curreg[4]; \ |
| case REG: \ |
| if (CODE == 'N') \ |
| strcpy (curreg, reg_names[REGNO (XV) + 1]); \ |
| else \ |
| strcpy (curreg, reg_names[REGNO (XV)]); \ |
| fprintf (FILE, "%s", curreg); \ |
| break; \ |
| case MEM: \ |
| { \ |
| rtx addr = XEXP (XV, 0); \ |
| if (CODE == 'O') \ |
| { \ |
| if (GET_CODE (addr) == PLUS) \ |
| fprintf (FILE, "%d", INTVAL (XEXP (addr, 1))); \ |
| else \ |
| fprintf (FILE, "0"); \ |
| } \ |
| else if (CODE == 'R') \ |
| { \ |
| if (GET_CODE (addr) == PLUS) \ |
| fprintf (FILE, "%s", reg_names[REGNO (XEXP (addr, 0))]);\ |
| else \ |
| fprintf (FILE, "%s", reg_names[REGNO (addr)]); \ |
| } \ |
| else \ |
| output_address (XEXP (XV, 0)); \ |
| } \ |
| break; \ |
| case SYMBOL_REF: \ |
| case LABEL_REF: \ |
| mvs_page_lit += 4; \ |
| if (SYMBOL_REF_FLAG (XV)) fprintf (FILE, "=V("); \ |
| else fprintf (FILE, "=A("); \ |
| output_addr_const (FILE, XV); \ |
| fprintf (FILE, ")"); \ |
| break; \ |
| case CONST_INT: \ |
| if (CODE == 'B') \ |
| fprintf (FILE, "%d", INTVAL (XV) & 0xff); \ |
| else if (CODE == 'X') \ |
| fprintf (FILE, "%02X", INTVAL (XV) & 0xff); \ |
| else if (CODE == 'h') \ |
| fprintf (FILE, "%d", (INTVAL (XV) << 16) >> 16); \ |
| else if (CODE == 'H') \ |
| { \ |
| mvs_page_lit += 2; \ |
| fprintf (FILE, "=H'%d'", (INTVAL (XV) << 16) >> 16); \ |
| } \ |
| else if (CODE == 'K') \ |
| { \ |
| /* auto sign-extension of signed 16-bit to signed 32-bit */ \ |
| mvs_page_lit += 4; \ |
| fprintf (FILE, "=F'%d'", (INTVAL (XV) << 16) >> 16); \ |
| } \ |
| else if (CODE == 'W') \ |
| { \ |
| /* hand-built sign-extension of signed 32-bit to 64-bit */ \ |
| mvs_page_lit += 8; \ |
| if (0 <= INTVAL (XV)) { \ |
| fprintf (FILE, "=XL8'00000000"); \ |
| } else { \ |
| fprintf (FILE, "=XL8'FFFFFFFF"); \ |
| } \ |
| fprintf (FILE, "%08X'", INTVAL (XV)); \ |
| } \ |
| else \ |
| { \ |
| mvs_page_lit += 4; \ |
| fprintf (FILE, "=F'%d'", INTVAL (XV)); \ |
| } \ |
| break; \ |
| case CONST_DOUBLE: \ |
| if (GET_MODE (XV) == DImode) \ |
| { \ |
| if (CODE == 'M') \ |
| { \ |
| mvs_page_lit += 4; \ |
| fprintf (FILE, "=XL4'%08X'", CONST_DOUBLE_LOW (XV)); \ |
| } \ |
| else if (CODE == 'L') \ |
| { \ |
| mvs_page_lit += 4; \ |
| fprintf (FILE, "=XL4'%08X'", CONST_DOUBLE_HIGH (XV)); \ |
| } \ |
| else \ |
| { \ |
| mvs_page_lit += 8; \ |
| fprintf (FILE, "=XL8'%08X%08X'", CONST_DOUBLE_LOW (XV), \ |
| CONST_DOUBLE_HIGH (XV)); \ |
| } \ |
| } \ |
| else \ |
| { \ |
| /* hack alert -- this prints wildly incorrect values */ \ |
| /* when run in cross-compiler mode. See ELF section */ \ |
| /* for suggested fix */ \ |
| union { double d; int i[2]; } u; \ |
| u.i[0] = CONST_DOUBLE_LOW (XV); \ |
| u.i[1] = CONST_DOUBLE_HIGH (XV); \ |
| if (GET_MODE (XV) == SFmode) \ |
| { \ |
| mvs_page_lit += 4; \ |
| fprintf (FILE, "=E'%.9G'", u.d); \ |
| } \ |
| else \ |
| { \ |
| mvs_page_lit += 8; \ |
| fprintf (FILE, "=D'%.18G'", u.d); \ |
| } \ |
| } \ |
| break; \ |
| case CONST: \ |
| if (GET_CODE (XEXP (XV, 0)) == PLUS \ |
| && GET_CODE (XEXP (XEXP (XV, 0), 0)) == SYMBOL_REF) \ |
| { \ |
| mvs_page_lit += 4; \ |
| if (SYMBOL_REF_FLAG (XEXP (XEXP (XV, 0), 0))) \ |
| { \ |
| fprintf (FILE, "=V("); \ |
| ASM_OUTPUT_LABELREF (FILE, \ |
| XSTR (XEXP (XEXP (XV, 0), 0), 0)); \ |
| fprintf (FILE, ")\n\tA\t%s,=F'%d'", curreg, \ |
| INTVAL (XEXP (XEXP (XV, 0), 1))); \ |
| } \ |
| else \ |
| { \ |
| fprintf (FILE, "=A("); \ |
| output_addr_const (FILE, XV); \ |
| fprintf (FILE, ")"); \ |
| } \ |
| } \ |
| else \ |
| { \ |
| mvs_page_lit += 4; \ |
| fprintf (FILE, "=F'"); \ |
| output_addr_const (FILE, XV); \ |
| fprintf (FILE, "'"); \ |
| } \ |
| break; \ |
| default: \ |
| abort(); \ |
| } \ |
| } |
| |
| #define PRINT_OPERAND_ADDRESS(FILE, ADDR) \ |
| { \ |
| rtx breg, xreg, offset, plus; \ |
| \ |
| switch (GET_CODE (ADDR)) \ |
| { \ |
| case REG: \ |
| fprintf (FILE, "0(%s)", reg_names[REGNO (ADDR)]); \ |
| break; \ |
| case PLUS: \ |
| breg = 0; \ |
| xreg = 0; \ |
| offset = 0; \ |
| if (GET_CODE (XEXP (ADDR, 0)) == PLUS) \ |
| { \ |
| if (GET_CODE (XEXP (ADDR, 1)) == REG) \ |
| breg = XEXP (ADDR, 1); \ |
| else \ |
| offset = XEXP (ADDR, 1); \ |
| plus = XEXP (ADDR, 0); \ |
| } \ |
| else \ |
| { \ |
| if (GET_CODE (XEXP (ADDR, 0)) == REG) \ |
| breg = XEXP (ADDR, 0); \ |
| else \ |
| offset = XEXP (ADDR, 0); \ |
| plus = XEXP (ADDR, 1); \ |
| } \ |
| if (GET_CODE (plus) == PLUS) \ |
| { \ |
| if (GET_CODE (XEXP (plus, 0)) == REG) \ |
| { \ |
| if (breg) \ |
| xreg = XEXP (plus, 0); \ |
| else \ |
| breg = XEXP (plus, 0); \ |
| } \ |
| else \ |
| { \ |
| offset = XEXP (plus, 0); \ |
| } \ |
| if (GET_CODE (XEXP (plus, 1)) == REG) \ |
| { \ |
| if (breg) \ |
| xreg = XEXP (plus, 1); \ |
| else \ |
| breg = XEXP (plus, 1); \ |
| } \ |
| else \ |
| { \ |
| offset = XEXP (plus, 1); \ |
| } \ |
| } \ |
| else if (GET_CODE (plus) == REG) \ |
| { \ |
| if (breg) \ |
| xreg = plus; \ |
| else \ |
| breg = plus; \ |
| } \ |
| else \ |
| { \ |
| offset = plus; \ |
| } \ |
| if (offset) \ |
| { \ |
| if (GET_CODE (offset) == LABEL_REF) \ |
| fprintf (FILE, "L%d", \ |
| CODE_LABEL_NUMBER (XEXP (offset, 0))); \ |
| else \ |
| output_addr_const (FILE, offset); \ |
| } \ |
| else \ |
| fprintf (FILE, "0"); \ |
| if (xreg) \ |
| fprintf (FILE, "(%s,%s)", \ |
| reg_names[REGNO (xreg)], reg_names[REGNO (breg)]); \ |
| else \ |
| fprintf (FILE, "(%s)", reg_names[REGNO (breg)]); \ |
| break; \ |
| default: \ |
| mvs_page_lit += 4; \ |
| if (SYMBOL_REF_FLAG (ADDR)) fprintf (FILE, "=V("); \ |
| else fprintf (FILE, "=A("); \ |
| output_addr_const (FILE, ADDR); \ |
| fprintf (FILE, ")"); \ |
| break; \ |
| } \ |
| } |
| |
| #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \ |
| { \ |
| if (strlen (NAME) + 1 > mvs_function_name_length) \ |
| { \ |
| if (mvs_function_name) \ |
| free (mvs_function_name); \ |
| mvs_function_name = 0; \ |
| } \ |
| if (!mvs_function_name) \ |
| { \ |
| mvs_function_name_length = strlen (NAME) * 2 + 1; \ |
| mvs_function_name = (char *) xmalloc (mvs_function_name_length); \ |
| } \ |
| if (!strcmp (NAME, "main")) \ |
| strcpy (mvs_function_name, "gccmain"); \ |
| else \ |
| strcpy (mvs_function_name, NAME); \ |
| fprintf (FILE, "\tDS\t0F\n"); \ |
| assemble_name (FILE, mvs_function_name); \ |
| fputs ("\tRMODE\tANY\n", FILE); \ |
| assemble_name (FILE, mvs_function_name); \ |
| fputs ("\tCSECT\n", FILE); \ |
| } |
| |
| /* Output assembler code to FILE to increment profiler label # LABELNO |
| for profiling a function entry. */ |
| |
| #define FUNCTION_PROFILER(FILE, LABELNO) \ |
| fprintf (FILE, "Error: No profiling available.\n") |
| |
| #endif /* TARGET_HLASM */ |
| |
| /* ======================================================== */ |
| |
| #ifdef TARGET_ELF_ABI |
| |
| /* How to refer to registers in assembler output. This sequence is |
| indexed by compiler's hard-register-number (see above). */ |
| |
| #define REGISTER_NAMES \ |
| { "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \ |
| "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", \ |
| "f0", "f2", "f4", "f6" \ |
| } |
| |
| /* Print operand XV (an rtx) in assembler syntax to file FILE. |
| CODE is a letter or dot (`z' in `%z0') or 0 if no letter was specified. |
| For `%' followed by punctuation, CODE is the punctuation and XV is null. */ |
| |
| #define PRINT_OPERAND(FILE, XV, CODE) \ |
| { \ |
| switch (GET_CODE (XV)) \ |
| { \ |
| static char curreg[4]; \ |
| case REG: \ |
| if (CODE == 'N') \ |
| strcpy (curreg, reg_names[REGNO (XV) + 1]); \ |
| else \ |
| strcpy (curreg, reg_names[REGNO (XV)]); \ |
| fprintf (FILE, "%s", curreg); \ |
| break; \ |
| case MEM: \ |
| { \ |
| rtx addr = XEXP (XV, 0); \ |
| if (CODE == 'O') \ |
| { \ |
| if (GET_CODE (addr) == PLUS) \ |
| fprintf (FILE, "%d", INTVAL (XEXP (addr, 1))); \ |
| else \ |
| fprintf (FILE, "0"); \ |
| } \ |
| else if (CODE == 'R') \ |
| { \ |
| if (GET_CODE (addr) == PLUS) \ |
| fprintf (FILE, "%s", reg_names[REGNO (XEXP (addr, 0))]);\ |
| else \ |
| fprintf (FILE, "%s", reg_names[REGNO (addr)]); \ |
| } \ |
| else \ |
| output_address (XEXP (XV, 0)); \ |
| } \ |
| break; \ |
| case SYMBOL_REF: \ |
| case LABEL_REF: \ |
| mvs_page_lit += 4; \ |
| if (SYMBOL_REF_FLAG (XV)) fprintf (FILE, "=V("); \ |
| else fprintf (FILE, "=A("); \ |
| output_addr_const (FILE, XV); \ |
| fprintf (FILE, ")"); \ |
| break; \ |
| case CONST_INT: \ |
| if (CODE == 'B') \ |
| fprintf (FILE, "%d", INTVAL (XV) & 0xff); \ |
| else if (CODE == 'X') \ |
| fprintf (FILE, "%02X", INTVAL (XV) & 0xff); \ |
| else if (CODE == 'h') \ |
| fprintf (FILE, "%d", (INTVAL (XV) << 16) >> 16); \ |
| else if (CODE == 'H') \ |
| { \ |
| mvs_page_lit += 2; \ |
| fprintf (FILE, "=H'%d'", (INTVAL (XV) << 16) >> 16); \ |
| } \ |
| else if (CODE == 'K') \ |
| { \ |
| /* auto sign-extension of signed 16-bit to signed 32-bit */ \ |
| mvs_page_lit += 4; \ |
| fprintf (FILE, "=F'%d'", (INTVAL (XV) << 16) >> 16); \ |
| } \ |
| else if (CODE == 'W') \ |
| { \ |
| /* hand-built sign-extension of signed 32-bit to 64-bit */ \ |
| mvs_page_lit += 8; \ |
| if (0 <= INTVAL (XV)) { \ |
| fprintf (FILE, "=XL8'00000000"); \ |
| } else { \ |
| fprintf (FILE, "=XL8'FFFFFFFF"); \ |
| } \ |
| fprintf (FILE, "%08X'", INTVAL (XV)); \ |
| } \ |
| else \ |
| { \ |
| mvs_page_lit += 4; \ |
| fprintf (FILE, "=F'%d'", INTVAL (XV)); \ |
| } \ |
| break; \ |
| case CONST_DOUBLE: \ |
| if (GET_MODE (XV) == DImode) \ |
| { \ |
| if (CODE == 'M') \ |
| { \ |
| mvs_page_lit += 4; \ |
| fprintf (FILE, "=XL4'%08X'", CONST_DOUBLE_LOW (XV)); \ |
| } \ |
| else if (CODE == 'L') \ |
| { \ |
| mvs_page_lit += 4; \ |
| fprintf (FILE, "=XL4'%08X'", CONST_DOUBLE_HIGH (XV)); \ |
| } \ |
| else \ |
| { \ |
| mvs_page_lit += 8; \ |
| fprintf (FILE, "=yyyyXL8'%08X%08X'", \ |
| CONST_DOUBLE_HIGH (XV), CONST_DOUBLE_LOW (XV)); \ |
| } \ |
| } \ |
| else \ |
| { \ |
| char buf[50]; \ |
| REAL_VALUE_TYPE rval; \ |
| REAL_VALUE_FROM_CONST_DOUBLE(rval, XV); \ |
| REAL_VALUE_TO_DECIMAL (rval, HOST_WIDE_INT_PRINT_DEC, buf); \ |
| if (GET_MODE (XV) == SFmode) \ |
| { \ |
| mvs_page_lit += 4; \ |
| fprintf (FILE, "=E'%s'", buf); \ |
| } \ |
| else \ |
| if (GET_MODE (XV) == DFmode) \ |
| { \ |
| mvs_page_lit += 8; \ |
| fprintf (FILE, "=D'%s'", buf); \ |
| } \ |
| else /* VOIDmode !?!? strange but true ... */ \ |
| { \ |
| mvs_page_lit += 8; \ |
| fprintf (FILE, "=XL8'%08X%08X'", \ |
| CONST_DOUBLE_HIGH (XV), CONST_DOUBLE_LOW (XV)); \ |
| } \ |
| } \ |
| break; \ |
| case CONST: \ |
| if (GET_CODE (XEXP (XV, 0)) == PLUS \ |
| && GET_CODE (XEXP (XEXP (XV, 0), 0)) == SYMBOL_REF) \ |
| { \ |
| mvs_page_lit += 4; \ |
| if (SYMBOL_REF_FLAG (XEXP (XEXP (XV, 0), 0))) \ |
| { \ |
| fprintf (FILE, "=V("); \ |
| ASM_OUTPUT_LABELREF (FILE, \ |
| XSTR (XEXP (XEXP (XV, 0), 0), 0)); \ |
| fprintf (FILE, ")\n\tA\t%s,=F'%d'", curreg, \ |
| INTVAL (XEXP (XEXP (XV, 0), 1))); \ |
| } \ |
| else \ |
| { \ |
| fprintf (FILE, "=A("); \ |
| output_addr_const (FILE, XV); \ |
| fprintf (FILE, ")"); \ |
| } \ |
| } \ |
| else \ |
| { \ |
| mvs_page_lit += 4; \ |
| fprintf (FILE, "=bogus_bad_F'"); \ |
| output_addr_const (FILE, XV); \ |
| fprintf (FILE, "'"); \ |
| /* XXX hack alert this gets gen'd in -fPIC code in relation to a tablejump */ \ |
| /* but its somehow fundamentally broken, I can't make any sense out of it */ \ |
| debug_rtx (XV); \ |
| abort(); \ |
| } \ |
| break; \ |
| default: \ |
| abort(); \ |
| } \ |
| } |
| |
| #define PRINT_OPERAND_ADDRESS(FILE, ADDR) \ |
| { \ |
| rtx breg, xreg, offset, plus; \ |
| \ |
| switch (GET_CODE (ADDR)) \ |
| { \ |
| case REG: \ |
| fprintf (FILE, "0(%s)", reg_names[REGNO (ADDR)]); \ |
| break; \ |
| case PLUS: \ |
| breg = 0; \ |
| xreg = 0; \ |
| offset = 0; \ |
| if (GET_CODE (XEXP (ADDR, 0)) == PLUS) \ |
| { \ |
| if (GET_CODE (XEXP (ADDR, 1)) == REG) \ |
| breg = XEXP (ADDR, 1); \ |
| else \ |
| offset = XEXP (ADDR, 1); \ |
| plus = XEXP (ADDR, 0); \ |
| } \ |
| else \ |
| { \ |
| if (GET_CODE (XEXP (ADDR, 0)) == REG) \ |
| breg = XEXP (ADDR, 0); \ |
| else \ |
| offset = XEXP (ADDR, 0); \ |
| plus = XEXP (ADDR, 1); \ |
| } \ |
| if (GET_CODE (plus) == PLUS) \ |
| { \ |
| if (GET_CODE (XEXP (plus, 0)) == REG) \ |
| { \ |
| if (breg) \ |
| xreg = XEXP (plus, 0); \ |
| else \ |
| breg = XEXP (plus, 0); \ |
| } \ |
| else \ |
| { \ |
| offset = XEXP (plus, 0); \ |
| } \ |
| if (GET_CODE (XEXP (plus, 1)) == REG) \ |
| { \ |
| if (breg) \ |
| xreg = XEXP (plus, 1); \ |
| else \ |
| breg = XEXP (plus, 1); \ |
| } \ |
| else \ |
| { \ |
| offset = XEXP (plus, 1); \ |
| } \ |
| } \ |
| else if (GET_CODE (plus) == REG) \ |
| { \ |
| if (breg) \ |
| xreg = plus; \ |
| else \ |
| breg = plus; \ |
| } \ |
| else \ |
| { \ |
| offset = plus; \ |
| } \ |
| if (offset) \ |
| { \ |
| if (GET_CODE (offset) == LABEL_REF) \ |
| fprintf (FILE, "L%d", \ |
| CODE_LABEL_NUMBER (XEXP (offset, 0))); \ |
| else \ |
| output_addr_const (FILE, offset); \ |
| } \ |
| else \ |
| fprintf (FILE, "0"); \ |
| if (xreg) \ |
| fprintf (FILE, "(%s,%s)", \ |
| reg_names[REGNO (xreg)], reg_names[REGNO (breg)]); \ |
| else \ |
| fprintf (FILE, "(%s)", reg_names[REGNO (breg)]); \ |
| break; \ |
| default: \ |
| mvs_page_lit += 4; \ |
| if (SYMBOL_REF_FLAG (ADDR)) fprintf (FILE, "=V("); \ |
| else fprintf (FILE, "=A("); \ |
| output_addr_const (FILE, ADDR); \ |
| fprintf (FILE, ")"); \ |
| break; \ |
| } \ |
| } |
| |
| /* Output assembler code to FILE to increment profiler label # LABELNO |
| for profiling a function entry. */ |
| /* Make it a no-op for now, so we can at least compile glibc */ |
| #define FUNCTION_PROFILER(FILE, LABELNO) { \ |
| mvs_check_page (FILE, 24, 4); \ |
| fprintf (FILE, "\tSTM\tr1,r2,%d(sp)\n", STACK_POINTER_OFFSET-8); \ |
| fprintf (FILE, "\tLA\tr1,1(0,0)\n"); \ |
| fprintf (FILE, "\tL\tr2,=A(.LP%d)\n", LABELNO); \ |
| fprintf (FILE, "\tA\tr1,0(r2)\n"); \ |
| fprintf (FILE, "\tST\tr1,0(r2)\n"); \ |
| fprintf (FILE, "\tLM\tr1,r2,%d(sp)\n", STACK_POINTER_OFFSET-8); \ |
| } |
| |
| /* Don't bother to output .extern pseudo-ops. They are not needed by |
| ELF assemblers. */ |
| |
| #undef ASM_OUTPUT_EXTERNAL |
| |
| #define ASM_DOUBLE "\t.double" |
| |
| /* Argument to the flt pt. macros is a REAL_VALUE_TYPE which |
| may or may not be a float/double, depending on whther we |
| are running in cross-compiler mode. */ |
| /* This is how to output an assembler line defining a `double' constant. */ |
| #define ASM_OUTPUT_DOUBLE(FILE, RVAL) { \ |
| char buf[50]; \ |
| REAL_VALUE_TO_DECIMAL (RVAL, HOST_WIDE_INT_PRINT_DOUBLE_HEX, buf); \ |
| fprintf (FILE, "\tDC\tD'%s'\n", buf); \ |
| } |
| |
| /* This is how to output an assembler line defining a `float' constant. */ |
| #define ASM_OUTPUT_FLOAT(FILE, RVAL) { \ |
| char buf[50]; \ |
| REAL_VALUE_TO_DECIMAL (RVAL, HOST_WIDE_INT_PRINT_DEC, buf); \ |
| fprintf (FILE, "\tDC\tE'%s'\n", buf); \ |
| } |
| |
| |
| /* This is how to output the definition of a user-level label named NAME, |
| such as the label on a static function or variable NAME. */ |
| #define ASM_OUTPUT_LABEL(FILE,NAME) \ |
| (assemble_name (FILE, NAME), fputs (":\n", FILE)) |
| |
| /* #define ASM_OUTPUT_LABELREF(FILE, NAME) */ /* use gas -- defaults.h */ |
| |
| /* Generate internal label. Since we can branch here from off page, we |
| must reload the base register. Note that internal labels are generated |
| for loops, goto's and case labels. */ |
| #undef ASM_OUTPUT_INTERNAL_LABEL |
| #define ASM_OUTPUT_INTERNAL_LABEL(FILE, PREFIX, NUM) \ |
| { \ |
| if (!strcmp (PREFIX,"L")) \ |
| { \ |
| mvs_add_label(NUM); \ |
| } \ |
| fprintf (FILE, ".%s%d:\n", PREFIX, NUM); \ |
| } |
| |
| /* let config/svr4.h define this ... |
| * #define ASM_OUTPUT_CASE_LABEL(FILE, PREFIX, NUM, TABLE) |
| * fprintf (FILE, "%s%d:\n", PREFIX, NUM) |
| */ |
| |
| /* This is how to output an element of a case-vector that is absolute. */ |
| #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \ |
| mvs_check_page (FILE, 4, 0); \ |
| fprintf (FILE, "\t.long\t.L%d\n", VALUE) |
| |
| /* This is how to output an element of a case-vector that is relative. */ |
| #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \ |
| mvs_check_page (FILE, 4, 0); \ |
| fprintf (FILE, "\t.long\t.L%d-.L%d\n", VALUE, REL) |
| |
| /* Right now, PUSH & POP are used only when profiling is enabled, |
| and then, only to push the static chain reg and the function struct |
| value reg, and only if those are used by the function being profiled. |
| We don't need this for profiling, so punt. */ |
| #define ASM_OUTPUT_REG_PUSH(FILE, REGNO) |
| #define ASM_OUTPUT_REG_POP(FILE, REGNO) |
| |
| |
| /* Indicate that jump tables go in the text section. This is |
| necessary when compiling PIC code. */ |
| #define JUMP_TABLES_IN_TEXT_SECTION 1 |
| |
| /* Define macro used to output shift-double opcodes when the shift |
| count is in %cl. Some assemblers require %cl as an argument; |
| some don't. |
| |
| GAS requires the %cl argument, so override i386/unix.h. */ |
| |
| #undef SHIFT_DOUBLE_OMITS_COUNT |
| #define SHIFT_DOUBLE_OMITS_COUNT 0 |
| |
| #define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \ |
| ( (OUTPUT) = (char *) alloca (strlen ((NAME)) + 10), \ |
| sprintf ((OUTPUT), "%s.%d", (NAME), (LABELNO))) |
| |
| /* Allow #sccs in preprocessor. */ |
| #define SCCS_DIRECTIVE |
| |
| /* Implicit library calls should use memcpy, not bcopy, etc. */ |
| #define TARGET_MEM_FUNCTIONS |
| |
| /* Output before read-only data. */ |
| #define TEXT_SECTION_ASM_OP "\t.text" |
| |
| /* Output before writable (initialized) data. */ |
| #define DATA_SECTION_ASM_OP "\t.data" |
| |
| /* Output before writable (uninitialized) data. */ |
| #define BSS_SECTION_ASM_OP "\t.bss" |
| |
| /* In the past there was confusion as to what the argument to .align was |
| in GAS. For the last several years the rule has been this: for a.out |
| file formats that argument is LOG, and for all other file formats the |
| argument is 1<<LOG. |
| |
| However, GAS now has .p2align and .balign pseudo-ops so to remove any |
| doubt or guess work, and since this file is used for both a.out and other |
| file formats, we use one of them. */ |
| |
| #define ASM_OUTPUT_ALIGN(FILE,LOG) \ |
| if ((LOG)!=0) fprintf ((FILE), "\t.balign %d\n", 1<<(LOG)) |
| |
| /* This is how to output a command to make the user-level label named NAME |
| defined for reference from other files. */ |
| |
| #define ASM_GLOBALIZE_LABEL(FILE,NAME) \ |
| (fputs (".globl ", FILE), assemble_name (FILE, NAME), fputs ("\n", FILE)) |
| |
| /* This says how to output an assembler line |
| to define a global common symbol. */ |
| |
| #define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED) \ |
| ( fputs (".comm ", (FILE)), \ |
| assemble_name ((FILE), (NAME)), \ |
| fprintf ((FILE), ",%u\n", (ROUNDED))) |
| |
| /* This says how to output an assembler line |
| to define a local common symbol. */ |
| |
| #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED) \ |
| ( fputs (".lcomm ", (FILE)), \ |
| assemble_name ((FILE), (NAME)), \ |
| fprintf ((FILE), ",%u\n", (ROUNDED))) |
| |
| #endif /* TARGET_ELF_ABI */ |
| #endif /* ! GCC_I370_H */ |