diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 5bd0cad50d7..faa3c9a1376 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2004-01-29 Kazu Hirata + + * config/avr/avr.h: Remove target-independent comments about + target macros. + 2004-01-28 Daniel Berlin * timevar.c (timevar_print): Mention when checking is enabled. diff --git a/gcc/config/avr/avr.h b/gcc/config/avr/avr.h index f94cc578424..2c50d204d8d 100644 --- a/gcc/config/avr/avr.h +++ b/gcc/config/avr/avr.h @@ -103,42 +103,13 @@ extern int avr_asm_only_p; { "mcu=", &avr_mcu_name, N_("Specify the MCU name"), 0} } #define TARGET_VERSION fprintf (stderr, " (GNU assembler syntax)"); -/* This macro is a C statement to print on `stderr' a string - describing the particular machine description choice. Every - machine description should define `TARGET_VERSION'. For example: - - #ifdef MOTOROLA - #define TARGET_VERSION \ - fprintf (stderr, " (68k, Motorola syntax)"); - #else - #define TARGET_VERSION \ - fprintf (stderr, " (68k, MIT syntax)"); - #endif */ #define OVERRIDE_OPTIONS avr_override_options () -/* `OVERRIDE_OPTIONS' - Sometimes certain combinations of command options do not make - sense on a particular target machine. You can define a macro - `OVERRIDE_OPTIONS' to take account of this. This macro, if - defined, is executed once just after all the command options have - been parsed. - - Don't use this macro to turn on various extra optimizations for - `-O'. That is what `OPTIMIZATION_OPTIONS' is for. */ #define CAN_DEBUG_WITHOUT_FP -/* Define this macro if debugging can be performed even without a - frame pointer. If this macro is defined, GCC will turn on the - `-fomit-frame-pointer' option whenever `-O' is specified. */ -/* Define this if most significant byte of a word is the lowest numbered. */ #define BITS_BIG_ENDIAN 0 - -/* Define this if most significant byte of a word is the lowest numbered. */ #define BYTES_BIG_ENDIAN 0 - -/* Define this if most significant word of a multiword number is the lowest - numbered. */ #define WORDS_BIG_ENDIAN 0 #ifdef IN_LIBGCC2 @@ -149,8 +120,6 @@ extern int avr_asm_only_p; #define UNITS_PER_WORD 1 #endif -/* Width in bits of a pointer. - See also the macro `Pmode' defined below. */ #define POINTER_SIZE 16 @@ -158,117 +127,35 @@ extern int avr_asm_only_p; DImode or Dfmode ... */ #define MAX_FIXED_MODE_SIZE 32 -/* Allocation boundary (in *bits*) for storing arguments in argument list. */ #define PARM_BOUNDARY 8 -/* Allocation boundary (in *bits*) for the code of a function. */ #define FUNCTION_BOUNDARY 8 -/* Alignment of field after `int : 0' in a structure. */ #define EMPTY_FIELD_BOUNDARY 8 /* No data type wants to be aligned rounder than this. */ #define BIGGEST_ALIGNMENT 8 -/* Define this if move instructions will actually fail to work - when given unaligned data. */ #define STRICT_ALIGNMENT 0 -/* A C expression for the size in bits of the type `int' on the - target machine. If you don't define this, the default is one word. */ #define INT_TYPE_SIZE (TARGET_INT8 ? 8 : 16) - - -/* A C expression for the size in bits of the type `short' on the - target machine. If you don't define this, the default is half a - word. (If this would be less than one storage unit, it is rounded - up to one unit.) */ #define SHORT_TYPE_SIZE (INT_TYPE_SIZE == 8 ? INT_TYPE_SIZE : 16) - -/* A C expression for the size in bits of the type `long' on the - target machine. If you don't define this, the default is one word. */ #define LONG_TYPE_SIZE (INT_TYPE_SIZE == 8 ? 16 : 32) - #define MAX_LONG_TYPE_SIZE 32 -/* Maximum number for the size in bits of the type `long' on the - target machine. If this is undefined, the default is - `LONG_TYPE_SIZE'. Otherwise, it is the constant value that is the - largest value that `LONG_TYPE_SIZE' can have at run-time. This is - used in `cpp'. */ - - #define LONG_LONG_TYPE_SIZE 64 -/* A C expression for the size in bits of the type `long long' on the - target machine. If you don't define this, the default is two - words. If you want to support GNU Ada on your machine, the value - of macro must be at least 64. */ - - #define FLOAT_TYPE_SIZE 32 -/* A C expression for the size in bits of the type `float' on the - target machine. If you don't define this, the default is one word. */ - #define DOUBLE_TYPE_SIZE 32 -/* A C expression for the size in bits of the type `double' on the - target machine. If you don't define this, the default is two - words. */ - - #define LONG_DOUBLE_TYPE_SIZE 32 -/* A C expression for the size in bits of the type `long double' on - the target machine. If you don't define this, the default is two - words. */ #define DEFAULT_SIGNED_CHAR 1 -/* An expression whose value is 1 or 0, according to whether the type - `char' should be signed or unsigned by default. The user can - always override this default with the options `-fsigned-char' and - `-funsigned-char'. */ - -/* `DEFAULT_SHORT_ENUMS' - A C expression to determine whether to give an `enum' type only as - many bytes as it takes to represent the range of possible values - of that type. A nonzero value means to do that; a zero value - means all `enum' types should be allocated like `int'. - - If you don't define the macro, the default is 0. */ #define SIZE_TYPE (INT_TYPE_SIZE == 8 ? "long unsigned int" : "unsigned int") -/* A C expression for a string describing the name of the data type - to use for size values. The typedef name `size_t' is defined - using the contents of the string. - - The string can contain more than one keyword. If so, separate - them with spaces, and write first any length keyword, then - `unsigned' if appropriate, and finally `int'. The string must - exactly match one of the data type names defined in the function - `init_decl_processing' in the file `c-decl.c'. You may not omit - `int' or change the order--that would cause the compiler to crash - on startup. - - If you don't define this macro, the default is `"long unsigned - int"'. */ - #define PTRDIFF_TYPE (INT_TYPE_SIZE == 8 ? "long int" :"int") -/* A C expression for a string describing the name of the data type - to use for the result of subtracting two pointers. The typedef - name `ptrdiff_t' is defined using the contents of the string. See - `SIZE_TYPE' above for more information. - - If you don't define this macro, the default is `"long int"'. */ - #define WCHAR_TYPE_SIZE 16 -/* A C expression for the size in bits of the data type for wide - characters. This is used in `cpp', which cannot make use of - `WCHAR_TYPE'. */ #define FIRST_PSEUDO_REGISTER 36 -/* Number of hardware registers known to the compiler. They receive - numbers 0 through `FIRST_PSEUDO_REGISTER-1'; thus, the first - pseudo register's number really is assigned the number - `FIRST_PSEUDO_REGISTER'. */ #define FIXED_REGISTERS {\ 1,1,/* r0 r1 */\ @@ -289,24 +176,6 @@ extern int avr_asm_only_p; 0,0,/* r30 r31 */\ 1,1,/* STACK */\ 1,1 /* arg pointer */ } -/* An initializer that says which registers are used for fixed - purposes all throughout the compiled code and are therefore not - available for general allocation. These would include the stack - pointer, the frame pointer (except on machines where that can be - used as a general register when no frame pointer is needed), the - program counter on machines where that is considered one of the - addressable registers, and any other numbered register with a - standard use. - - This information is expressed as a sequence of numbers, separated - by commas and surrounded by braces. The Nth number is 1 if - register N is fixed, 0 otherwise. - - The table initialized from this macro, and the table initialized by - the following one, may be overridden at run time either - automatically, by the actions of the macro - `CONDITIONAL_REGISTER_USAGE', or by the user with the command - options `-ffixed-REG', `-fcall-used-REG' and `-fcall-saved-REG'. */ #define CALL_USED_REGISTERS { \ 1,1,/* r0 r1 */ \ @@ -327,22 +196,8 @@ extern int avr_asm_only_p; 1,1,/* r30 r31 */ \ 1,1,/* STACK */ \ 1,1 /* arg pointer */ } -/* Like `FIXED_REGISTERS' but has 1 for each register that is - clobbered (in general) by function calls as well as for fixed - registers. This macro therefore identifies the registers that are - not available for general allocation of values that must live - across function calls. - - If a register has 0 in `CALL_USED_REGISTERS', the compiler - automatically saves it on function entry and restores it on - function exit, if the register is used within the function. */ #define NON_SAVING_SETJMP 0 -/* If this macro is defined and has a nonzero value, it means that - `setjmp' and related functions fail to save the registers, or that - `longjmp' fails to restore them. To compensate, the compiler - avoids putting variables in registers in functions that use - `setjmp'. */ #define REG_ALLOC_ORDER { \ 24,25, \ @@ -356,117 +211,15 @@ extern int avr_asm_only_p; 0,1, \ 32,33,34,35 \ } -/* If defined, an initializer for a vector of integers, containing the - numbers of hard registers in the order in which GCC should - prefer to use them (from most preferred to least). - - If this macro is not defined, registers are used lowest numbered - first (all else being equal). - - One use of this macro is on machines where the highest numbered - registers must always be saved and the save-multiple-registers - instruction supports only sequences of consecutive registers. On - such machines, define `REG_ALLOC_ORDER' to be an initializer that - lists the highest numbered allocatable register first. */ #define ORDER_REGS_FOR_LOCAL_ALLOC order_regs_for_local_alloc () -/* ORDER_REGS_FOR_LOCAL_ALLOC' - A C statement (sans semicolon) to choose the order in which to - allocate hard registers for pseudo-registers local to a basic - block. - - Store the desired register order in the array `reg_alloc_order'. - Element 0 should be the register to allocate first; element 1, the - next register; and so on. - - The macro body should not assume anything about the contents of - `reg_alloc_order' before execution of the macro. - - On most machines, it is not necessary to define this macro. */ #define HARD_REGNO_NREGS(REGNO, MODE) ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD) -/* A C expression for the number of consecutive hard registers, - starting at register number REGNO, required to hold a value of mode - MODE. - - On a machine where all registers are exactly one word, a suitable - definition of this macro is - - #define HARD_REGNO_NREGS(REGNO, MODE) \ - ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) \ - / UNITS_PER_WORD)) */ - #define HARD_REGNO_MODE_OK(REGNO, MODE) avr_hard_regno_mode_ok(REGNO, MODE) -/* A C expression that is nonzero if it is permissible to store a - value of mode MODE in hard register number REGNO (or in several - registers starting with that one). For a machine where all - registers are equivalent, a suitable definition is - - #define HARD_REGNO_MODE_OK(REGNO, MODE) 1 - - It is not necessary for this macro to check for the numbers of - fixed registers, because the allocation mechanism considers them - to be always occupied. - - On some machines, double-precision values must be kept in even/odd - register pairs. The way to implement that is to define this macro - to reject odd register numbers for such modes. - - The minimum requirement for a mode to be OK in a register is that - the `movMODE' instruction pattern support moves between the - register and any other hard register for which the mode is OK; and - that moving a value into the register and back out not alter it. - - Since the same instruction used to move `SImode' will work for all - narrower integer modes, it is not necessary on any machine for - `HARD_REGNO_MODE_OK' to distinguish between these modes, provided - you define patterns `movhi', etc., to take advantage of this. This - is useful because of the interaction between `HARD_REGNO_MODE_OK' - and `MODES_TIEABLE_P'; it is very desirable for all integer modes - to be tieable. - - Many machines have special registers for floating point arithmetic. - Often people assume that floating point machine modes are allowed - only in floating point registers. This is not true. Any - registers that can hold integers can safely *hold* a floating - point machine mode, whether or not floating arithmetic can be done - on it in those registers. Integer move instructions can be used - to move the values. - - On some machines, though, the converse is true: fixed-point machine - modes may not go in floating registers. This is true if the - floating registers normalize any value stored in them, because - storing a non-floating value there would garble it. In this case, - `HARD_REGNO_MODE_OK' should reject fixed-point machine modes in - floating registers. But if the floating registers do not - automatically normalize, if you can store any bit pattern in one - and retrieve it unchanged without a trap, then any machine mode - may go in a floating register, so you can define this macro to say - so. - - The primary significance of special floating registers is rather - that they are the registers acceptable in floating point arithmetic - instructions. However, this is of no concern to - `HARD_REGNO_MODE_OK'. You handle it by writing the proper - constraints for those instructions. - - On some machines, the floating registers are especially slow to - access, so that it is better to store a value in a stack frame - than in such a register if floating point arithmetic is not being - done. As long as the floating registers are not in class - `GENERAL_REGS', they will not be used unless some pattern's - constraint asks for one. */ #define MODES_TIEABLE_P(MODE1, MODE2) 0 -/* A C expression that is nonzero if it is desirable to choose - register allocation so as to avoid move instructions between a - value of mode MODE1 and a value of mode MODE2. - - If `HARD_REGNO_MODE_OK (R, MODE1)' and `HARD_REGNO_MODE_OK (R, - MODE2)' are ever different for any R, then `MODES_TIEABLE_P (MODE1, - MODE2)' must be zero. */ enum reg_class { NO_REGS, @@ -484,21 +237,9 @@ enum reg_class { GENERAL_REGS, /* r0 - r31 */ ALL_REGS, LIM_REG_CLASSES }; -/* An enumeral type that must be defined with all the register class - names as enumeral values. `NO_REGS' must be first. `ALL_REGS' - must be the last register class, followed by one more enumeral - value, `LIM_REG_CLASSES', which is not a register class but rather - tells how many classes there are. - - Each register class has a number, which is the value of casting - the class name to type `int'. The number serves as an index in - many of the tables described below. */ #define N_REG_CLASSES (int)LIM_REG_CLASSES -/* The number of distinct register classes, defined as follows: - - #define N_REG_CLASSES (int) LIM_REG_CLASSES */ #define REG_CLASS_NAMES { \ "NO_REGS", \ @@ -515,9 +256,6 @@ enum reg_class { "NO_LD_REGS", /* r0 - r15 */ \ "GENERAL_REGS", /* r0 - r31 */ \ "ALL_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_X 26 #define REG_Y 28 @@ -544,41 +282,14 @@ enum reg_class { {0xffffffff,0x00000000}, /* GENERAL_REGS, r0 - r31 */ \ {0xffffffff,0x00000003} /* 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 REGNO_REG_CLASS(R) avr_regno_reg_class(R) -/* A C expression whose value is a register class containing hard - register REGNO. In general there is more than one such class; - choose a class which is "minimal", meaning that no smaller class - also contains the register. */ #define BASE_REG_CLASS (reload_completed ? BASE_POINTER_REGS : POINTER_REGS) -/* 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 INDEX_REG_CLASS NO_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 REG_CLASS_FROM_LETTER(C) avr_reg_class_from_letter(C) -/* A C expression which defines the machine-dependent operand - constraint letters for register classes. If CHAR is such a - letter, the value should be the register class corresponding to - it. Otherwise, the value should be `NO_REGS'. The register - letter `r', corresponding to class `GENERAL_REGS', will not be - passed to this macro; you do not need to handle it. */ #define REGNO_OK_FOR_BASE_P(r) (((r) < FIRST_PSEUDO_REGISTER \ && ((r) == REG_X \ @@ -591,206 +302,16 @@ enum reg_class { || reg_renumber[r] == REG_Z \ || (reg_renumber[r] \ == ARG_POINTER_REGNUM)))) -/* A C expression which is nonzero if register number NUM is suitable - for use as a base register in operand addresses. It may be either - a suitable hard register or a pseudo register that has been - allocated such a hard register. */ - -/* #define REGNO_MODE_OK_FOR_BASE_P(r, m) regno_mode_ok_for_base_p(r, m) - A C expression that is just like `REGNO_OK_FOR_BASE_P', except that - that expression may examine the mode of the memory reference in - MODE. You should define this macro if the mode of the memory - reference affects whether a register may be used as a base - register. If you define this macro, the compiler will use it - instead of `REGNO_OK_FOR_BASE_P'. */ #define REGNO_OK_FOR_INDEX_P(NUM) 0 -/* A C expression which is nonzero if register number NUM is suitable - for use as an index register in operand addresses. It may be - either a suitable hard register or a pseudo register that has been - allocated such a hard register. - - The difference between an index register and a base register is - that the index register may be scaled. If an address involves the - sum of two registers, neither one of them scaled, then either one - may be labeled the "base" and the other the "index"; but whichever - labeling is used must fit the machine's constraints of which - registers may serve in each capacity. The compiler will try both - labelings, looking for one that is valid, and will reload one or - both registers only if neither labeling works. */ #define PREFERRED_RELOAD_CLASS(X, CLASS) preferred_reload_class(X,CLASS) -/* A C expression that places additional restrictions on the register - class to use when it is necessary to copy value X into a register - in class CLASS. The value is a register class; perhaps CLASS, or - perhaps another, smaller class. On many machines, the following - definition is safe: - - #define PREFERRED_RELOAD_CLASS(X,CLASS) CLASS - - Sometimes returning a more restrictive class makes better code. - For example, on the 68000, when X is an integer constant that is - in range for a `moveq' instruction, the value of this macro is - always `DATA_REGS' as long as CLASS includes the data registers. - Requiring a data register guarantees that a `moveq' will be used. - - If X is a `const_double', by returning `NO_REGS' you can force X - into a memory constant. This is useful on certain machines where - immediate floating values cannot be loaded into certain kinds of - registers. */ -/* `PREFERRED_OUTPUT_RELOAD_CLASS (X, CLASS)' - Like `PREFERRED_RELOAD_CLASS', but for output reloads instead of - input reloads. If you don't define this macro, the default is to - use CLASS, unchanged. */ - -/* `LIMIT_RELOAD_CLASS (MODE, CLASS)' - A C expression that places additional restrictions on the register - class to use when it is necessary to be able to hold a value of - mode MODE in a reload register for which class CLASS would - ordinarily be used. - - Unlike `PREFERRED_RELOAD_CLASS', this macro should be used when - there are certain modes that simply can't go in certain reload - classes. - - The value is a register class; perhaps CLASS, or perhaps another, - smaller class. - - Don't define this macro unless the target machine has limitations - which require the macro to do something nontrivial. */ - -/* SECONDARY_INPUT_RELOAD_CLASS(CLASS, MODE, X) - `SECONDARY_RELOAD_CLASS (CLASS, MODE, X)' - `SECONDARY_OUTPUT_RELOAD_CLASS (CLASS, MODE, X)' - Many machines have some registers that cannot be copied directly - to or from memory or even from other types of registers. An - example is the `MQ' register, which on most machines, can only be - copied to or from general registers, but not memory. Some - machines allow copying all registers to and from memory, but - require a scratch register for stores to some memory locations - (e.g., those with symbolic address on the RT, and those with - certain symbolic address on the SPARC when compiling PIC). In - some cases, both an intermediate and a scratch register are - required. - - You should define these macros to indicate to the reload phase - that it may need to allocate at least one register for a reload in - addition to the register to contain the data. Specifically, if - copying X to a register CLASS in MODE requires an intermediate - register, you should define `SECONDARY_INPUT_RELOAD_CLASS' to - return the largest register class all of whose registers can be - used as intermediate registers or scratch registers. - - If copying a register CLASS in MODE to X requires an intermediate - or scratch register, `SECONDARY_OUTPUT_RELOAD_CLASS' should be - defined to return the largest register class required. If the - requirements for input and output reloads are the same, the macro - `SECONDARY_RELOAD_CLASS' should be used instead of defining both - macros identically. - - The values returned by these macros are often `GENERAL_REGS'. - Return `NO_REGS' if no spare register is needed; i.e., if X can be - directly copied to or from a register of CLASS in MODE without - requiring a scratch register. Do not define this macro if it - would always return `NO_REGS'. - - If a scratch register is required (either with or without an - intermediate register), you should define patterns for - `reload_inM' or `reload_outM', as required (*note Standard - Names::.. These patterns, which will normally be implemented with - a `define_expand', should be similar to the `movM' patterns, - except that operand 2 is the scratch register. - - Define constraints for the reload register and scratch register - that contain a single register class. If the original reload - register (whose class is CLASS) can meet the constraint given in - the pattern, the value returned by these macros is used for the - class of the scratch register. Otherwise, two additional reload - registers are required. Their classes are obtained from the - constraints in the insn pattern. - - X might be a pseudo-register or a `subreg' of a pseudo-register, - which could either be in a hard register or in memory. Use - `true_regnum' to find out; it will return -1 if the pseudo is in - memory and the hard register number if it is in a register. - - These macros should not be used in the case where a particular - class of registers can only be copied to memory and not to another - class of registers. In that case, secondary reload registers are - not needed and would not be helpful. Instead, a stack location - must be used to perform the copy and the `movM' pattern should use - memory as an intermediate storage. This case often occurs between - floating-point and general registers. */ - -/* `SECONDARY_MEMORY_NEEDED (CLASS1, CLASS2, M)' - Certain machines have the property that some registers cannot be - copied to some other registers without using memory. Define this - macro on those machines to be a C expression that is nonzero if - objects of mode M in registers of CLASS1 can only be copied to - registers of class CLASS2 by storing a register of CLASS1 into - memory and loading that memory location into a register of CLASS2. - - Do not define this macro if its value would always be zero. - - `SECONDARY_MEMORY_NEEDED_RTX (MODE)' - Normally when `SECONDARY_MEMORY_NEEDED' is defined, the compiler - allocates a stack slot for a memory location needed for register - copies. If this macro is defined, the compiler instead uses the - memory location defined by this macro. - - Do not define this macro if you do not define - `SECONDARY_MEMORY_NEEDED'. */ #define SMALL_REGISTER_CLASSES 1 -/* Normally the compiler avoids choosing registers that have been - explicitly mentioned in the rtl as spill registers (these - registers are normally those used to pass parameters and return - values). However, some machines have so few registers of certain - classes that there would not be enough registers to use as spill - registers if this were done. - - Define `SMALL_REGISTER_CLASSES' to be an expression with a nonzero - value on these machines. When this macro has a nonzero value, the - compiler allows registers explicitly used in the rtl to be used as - spill registers but avoids extending the lifetime of these - registers. - - It is always safe to define this macro with a nonzero value, but - if you unnecessarily define it, you will reduce the amount of - optimizations that can be performed in some cases. If you do not - define this macro with a nonzero value when it is required, the - compiler will run out of spill registers and print a fatal error - message. For most machines, you should not define this macro at - all. */ #define CLASS_LIKELY_SPILLED_P(c) class_likely_spilled_p(c) -/* A C expression whose value is nonzero if pseudos that have been - assigned to registers of class CLASS would likely be spilled - because registers of CLASS are needed for spill registers. - - The default value of this macro returns 1 if CLASS has exactly one - register and zero otherwise. On most machines, this default - should be used. Only define this macro to some other expression - if pseudo allocated by `local-alloc.c' end up in memory because - their hard registers were needed for spill registers. If this - macro returns nonzero for those classes, those pseudos will only - be allocated by `global.c', which knows how to reallocate the - pseudo to another register. If there would not be another - register available for reallocation, you should not change the - definition of this macro since the only effect of such a - definition would be to slow down register allocation. */ #define CLASS_MAX_NREGS(CLASS, MODE) class_max_nregs (CLASS, MODE) -/* A C expression for the maximum number of consecutive registers of - class CLASS needed to hold a value of mode MODE. - - This is closely related to the macro `HARD_REGNO_NREGS'. In fact, - the value of the macro `CLASS_MAX_NREGS (CLASS, MODE)' should be - the maximum value of `HARD_REGNO_NREGS (REGNO, MODE)' for all - REGNO values in the class CLASS. - - This macro helps control the handling of multiple-word values in - the reload pass. */ #define CONST_OK_FOR_LETTER_P(VALUE, C) \ ((C) == 'I' ? (VALUE) >= 0 && (VALUE) <= 63 : \ @@ -803,189 +324,38 @@ enum reg_class { (C) == 'P' ? (VALUE) == 1 : \ 0) -/* A C expression that defines the machine-dependent operand - constraint letters (`I', `J', `K', ... `P') that specify - particular ranges of integer values. If C is one of those - letters, the expression should check that VALUE, an integer, is in - the appropriate range and return 1 if so, 0 otherwise. If C is - not one of those letters, the value should be 0 regardless of - VALUE. */ - #define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \ ((C) == 'G' ? (VALUE) == CONST0_RTX (SFmode) \ : 0) -/* `CONST_DOUBLE_OK_FOR_LETTER_P (VALUE, C)' - A C expression that defines the machine-dependent operand - constraint letters that specify particular ranges of - `const_double' values (`G' or `H'). - - If C is one of those letters, the expression should check that - VALUE, an RTX of code `const_double', is in the appropriate range - and return 1 if so, 0 otherwise. If C is not one of those - letters, the value should be 0 regardless of VALUE. - - `const_double' is used for all floating-point constants and for - `DImode' fixed-point constants. A given letter can accept either - or both kinds of values. It can use `GET_MODE' to distinguish - between these kinds. */ #define EXTRA_CONSTRAINT(x, c) extra_constraint(x, c) -/* A C expression that defines the optional machine-dependent - constraint letters (``Q', `R', `S', `T', `U') that can' - be used to segregate specific types of operands, usually memory - references, for the target machine. Normally this macro will not - be defined. If it is required for a particular target machine, it - should return 1 if VALUE corresponds to the operand type - represented by the constraint letter C. If C is not defined as an - extra constraint, the value returned should be 0 regardless of - VALUE. - For example, on the ROMP, load instructions cannot have their - output in r0 if the memory reference contains a symbolic address. - Constraint letter `Q' is defined as representing a memory address - that does *not* contain a symbolic address. An alternative is - specified with a `Q' constraint on the input and `r' on the - output. The next alternative specifies `m' on the input and a - register class that does not include r0 on the output. */ - -/* This is an undocumented variable which describes - how GCC will push a data */ #define STACK_PUSH_CODE POST_DEC #define STACK_GROWS_DOWNWARD -/* Define this macro if pushing a word onto the stack moves the stack - pointer to a smaller address. - - When we say, "define this macro if ...," it means that the - compiler checks this macro only with `#ifdef' so the precise - definition used does not matter. */ #define STARTING_FRAME_OFFSET 1 -/* Offset from the frame pointer to the first local variable slot to - be allocated. - - If `FRAME_GROWS_DOWNWARD', find the next slot's offset by - subtracting the first slot's length from `STARTING_FRAME_OFFSET'. - Otherwise, it is found by adding the length of the first slot to - the value `STARTING_FRAME_OFFSET'. */ #define STACK_POINTER_OFFSET 1 -/* Offset from the stack pointer register to the first location at - which outgoing arguments are placed. If not specified, the - default value of zero is used. This is the proper value for most - machines. - - If `ARGS_GROW_DOWNWARD', this is the offset to the location above - the first location at which outgoing arguments are placed. */ #define FIRST_PARM_OFFSET(FUNDECL) 0 -/* Offset from the argument pointer register to the first argument's - address. On some machines it may depend on the data type of the - function. - - If `ARGS_GROW_DOWNWARD', this is the offset to the location above - the first argument's address. */ - -/* `STACK_DYNAMIC_OFFSET (FUNDECL)' - Offset from the stack pointer register to an item dynamically - allocated on the stack, e.g., by `alloca'. - - The default value for this macro is `STACK_POINTER_OFFSET' plus the - length of the outgoing arguments. The default is correct for most - machines. See `function.c' for details. */ #define STACK_BOUNDARY 8 -/* Define this macro if there is a guaranteed alignment for the stack - pointer on this machine. The definition is a C expression for the - desired alignment (measured in bits). This value is used as a - default if PREFERRED_STACK_BOUNDARY is not defined. */ #define STACK_POINTER_REGNUM 32 -/* The register number of the stack pointer register, which must also - be a fixed register according to `FIXED_REGISTERS'. On most - machines, the hardware determines which register this is. */ #define FRAME_POINTER_REGNUM REG_Y -/* The register number of the frame pointer register, which is used to - access automatic variables in the stack frame. On some machines, - the hardware determines which register this is. On other - machines, you can choose any register you wish for this purpose. */ #define ARG_POINTER_REGNUM 34 -/* The register number of the arg pointer register, which is used to - access the function's argument list. On some machines, this is - the same as the frame pointer register. On some machines, the - hardware determines which register this is. On other machines, - you can choose any register you wish for this purpose. If this is - not the same register as the frame pointer register, then you must - mark it as a fixed register according to `FIXED_REGISTERS', or - arrange to be able to eliminate it (*note Elimination::.). */ #define STATIC_CHAIN_REGNUM 2 -/* Register numbers used for passing a function's static chain - pointer. If register windows are used, the register number as - seen by the called function is `STATIC_CHAIN_INCOMING_REGNUM', - while the register number as seen by the calling function is - `STATIC_CHAIN_REGNUM'. If these registers are the same, - `STATIC_CHAIN_INCOMING_REGNUM' need not be defined. - - The static chain register need not be a fixed register. - - If the static chain is passed in memory, these macros should not be - defined; instead, the next two macros should be defined. */ #define FRAME_POINTER_REQUIRED frame_pointer_required_p() -/* A C expression which is nonzero if a function must have and use a - frame pointer. This expression is evaluated in the reload pass. - If its value is nonzero the function will have a frame pointer. - - The expression can in principle examine the current function and - decide according to the facts, but on most machines the constant 0 - or the constant 1 suffices. Use 0 when the machine allows code to - be generated with no frame pointer, and doing so saves some time - or space. Use 1 when there is no possible advantage to avoiding a - frame pointer. - - In certain cases, the compiler does not know how to produce valid - code without a frame pointer. The compiler recognizes those cases - and automatically gives the function a frame pointer regardless of - what `FRAME_POINTER_REQUIRED' says. You don't need to worry about - them. - - In a function that does not require a frame pointer, the frame - pointer register can be allocated for ordinary usage, unless you - mark it as a fixed register. See `FIXED_REGISTERS' for more - information. */ #define ELIMINABLE_REGS { \ {ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \ {FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM} \ ,{FRAME_POINTER_REGNUM+1,STACK_POINTER_REGNUM+1}} -/* If defined, this macro specifies a table of register pairs used to - eliminate unneeded registers that point into the stack frame. If - it is not defined, the only elimination attempted by the compiler - is to replace references to the frame pointer with references to - the stack pointer. - - The definition of this macro is a list of structure - initializations, each of which specifies an original and - replacement register. - - On some machines, the position of the argument pointer is not - known until the compilation is completed. In such a case, a - separate hard register must be used for the argument pointer. - This register can be eliminated by replacing it with either the - frame pointer or the argument pointer, depending on whether or not - the frame pointer has been eliminated. - - In this case, you might specify: - #define ELIMINABLE_REGS \ - {{ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ - {ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \ - {FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}} - - Note that the elimination of the argument pointer with the stack - pointer is specified first since that is the preferred elimination. */ #define CAN_ELIMINATE(FROM, TO) (((FROM) == ARG_POINTER_REGNUM \ && (TO) == FRAME_POINTER_REGNUM) \ @@ -993,286 +363,51 @@ enum reg_class { || (FROM) == FRAME_POINTER_REGNUM+1) \ && ! FRAME_POINTER_REQUIRED \ )) -/* A C expression that returns nonzero if the compiler is allowed to - try to replace register number FROM-REG with register number - TO-REG. This macro need only be defined if `ELIMINABLE_REGS' is - defined, and will usually be the constant 1, since most of the - cases preventing register elimination are things that the compiler - already knows about. */ #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \ OFFSET = initial_elimination_offset (FROM, TO) -/* This macro is similar to `INITIAL_FRAME_POINTER_OFFSET'. It - specifies the initial difference between the specified pair of - registers. This macro must be defined if `ELIMINABLE_REGS' is - defined. */ #define RETURN_ADDR_RTX(count, x) \ gen_rtx_MEM (Pmode, memory_address (Pmode, plus_constant (tem, 1))) #define PUSH_ROUNDING(NPUSHED) (NPUSHED) -/* A C expression that is the number of bytes actually pushed onto the - stack when an instruction attempts to push NPUSHED bytes. - - If the target machine does not have a push instruction, do not - define this macro. That directs GCC to use an alternate - strategy: to allocate the entire argument block and then store the - arguments into it. - - On some machines, the definition - - #define PUSH_ROUNDING(BYTES) (BYTES) - - will suffice. But on other machines, instructions that appear to - push one byte actually push two bytes in an attempt to maintain - alignment. Then the definition should be - - #define PUSH_ROUNDING(BYTES) (((BYTES) + 1) & ~1) */ #define RETURN_POPS_ARGS(FUNDECL, FUNTYPE, STACK_SIZE) 0 -/* A C expression that should indicate the number of bytes of its own - arguments that a function pops on returning, or 0 if the function - pops no arguments and the caller must therefore pop them all after - the function returns. - - FUNDECL is a C variable whose value is a tree node that describes - the function in question. Normally it is a node of type - `FUNCTION_DECL' that describes the declaration of the function. - From this you can obtain the DECL_ATTRIBUTES of the - function. - - FUNTYPE is a C variable whose value is a tree node that describes - the function in question. Normally it is a node of type - `FUNCTION_TYPE' that describes the data type of the function. - From this it is possible to obtain the data types of the value and - arguments (if known). - - When a call to a library function is being considered, FUNDECL - will contain an identifier node for the library function. Thus, if - you need to distinguish among various library functions, you can - do so by their names. Note that "library function" in this - context means a function used to perform arithmetic, whose name is - known specially in the compiler and was not mentioned in the C - code being compiled. - - STACK-SIZE is the number of bytes of arguments passed on the - stack. If a variable number of bytes is passed, it is zero, and - argument popping will always be the responsibility of the calling - function. - - On the VAX, all functions always pop their arguments, so the - definition of this macro is STACK-SIZE. On the 68000, using the - standard calling convention, no functions pop their arguments, so - the value of the macro is always 0 in this case. But an - alternative calling convention is available in which functions - that take a fixed number of arguments pop them but other functions - (such as `printf') pop nothing (the caller pops all). When this - convention is in use, FUNTYPE is examined to determine whether a - function takes a fixed number of arguments. */ #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) (function_arg (&(CUM), MODE, TYPE, NAMED)) -/* A C expression that controls whether a function argument is passed - in a register, and which register. - - The arguments are CUM, which summarizes all the previous - arguments; MODE, the machine mode of the argument; TYPE, the data - type of the argument as a tree node or 0 if that is not known - (which happens for C support library functions); and NAMED, which - is 1 for an ordinary argument and 0 for nameless arguments that - correspond to `...' in the called function's prototype. - - The value of the expression is usually either a `reg' RTX for the - hard register in which to pass the argument, or zero to pass the - argument on the stack. - - For machines like the VAX and 68000, where normally all arguments - are pushed, zero suffices as a definition. - - The value of the expression can also be a `parallel' RTX. This is - used when an argument is passed in multiple locations. The mode - of the of the `parallel' should be the mode of the entire - argument. The `parallel' holds any number of `expr_list' pairs; - each one describes where part of the argument is passed. In each - `expr_list', the first operand can be either a `reg' RTX for the - hard register in which to pass this part of the argument, or zero - to pass the argument on the stack. If this operand is a `reg', - then the mode indicates how large this part of the argument is. - The second operand of the `expr_list' is a `const_int' which gives - the offset in bytes into the entire argument where this part - starts. - - The usual way to make the ANSI library `stdarg.h' work on a machine - where some arguments are usually passed in registers, is to cause - nameless arguments to be passed on the stack instead. This is done - by making `FUNCTION_ARG' return 0 whenever NAMED is 0. - - You may use the macro `MUST_PASS_IN_STACK (MODE, TYPE)' in the - definition of this macro to determine if this argument is of a - type that must be passed in the stack. If `REG_PARM_STACK_SPACE' - is not defined and `FUNCTION_ARG' returns nonzero for such an - argument, the compiler will abort. If `REG_PARM_STACK_SPACE' is - defined, the argument will be computed in the stack and then - loaded into a register. */ typedef struct avr_args { int nregs; /* # registers available for passing */ int regno; /* next available register number */ } CUMULATIVE_ARGS; -/* A C type for declaring a variable that is used as the first - argument of `FUNCTION_ARG' and other related values. For some - target machines, the type `int' suffices and can hold the number - of bytes of argument so far. - - There is no need to record in `CUMULATIVE_ARGS' anything about the - arguments that have been passed on the stack. The compiler has - other variables to keep track of that. For target machines on - which all arguments are passed on the stack, there is no need to - store anything in `CUMULATIVE_ARGS'; however, the data structure - must exist and should not be empty, so use `int'. */ #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, FNDECL) init_cumulative_args (&(CUM), FNTYPE, LIBNAME, FNDECL) -/* A C statement (sans semicolon) for initializing the variable CUM - for the state at the beginning of the argument list. The variable - has type `CUMULATIVE_ARGS'. The value of FNTYPE is the tree node - for the data type of the function which will receive the args, or 0 - if the args are to a compiler support library function. The value - of INDIRECT is nonzero when processing an indirect call, for - example a call through a function pointer. The value of INDIRECT - is zero for a call to an explicitly named function, a library - function call, or when `INIT_CUMULATIVE_ARGS' is used to find - arguments for the function being compiled. - - When processing a call to a compiler support library function, - LIBNAME identifies which one. It is a `symbol_ref' rtx which - contains the name of the function, as a string. LIBNAME is 0 when - an ordinary C function call is being processed. Thus, each time - this macro is called, either LIBNAME or FNTYPE is nonzero, but - never both of them at once. */ - #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \ (function_arg_advance (&CUM, MODE, TYPE, NAMED)) -/* A C statement (sans semicolon) to update the summarizer variable - CUM to advance past an argument in the argument list. The values - MODE, TYPE and NAMED describe that argument. Once this is done, - the variable CUM is suitable for analyzing the *following* - argument with `FUNCTION_ARG', etc. - - This macro need not do anything if the argument in question was - passed on the stack. The compiler knows how to track the amount - of stack space used for arguments without any special help. */ - #define FUNCTION_ARG_REGNO_P(r) function_arg_regno_p(r) -/* A C expression that is nonzero if REGNO is the number of a hard - register in which function arguments are sometimes passed. This - does *not* include implicit arguments such as the static chain and - the structure-value address. On many machines, no registers can be - used for this purpose since all function arguments are pushed on - the stack. */ extern int avr_reg_order[]; #define RET_REGISTER avr_ret_register () #define FUNCTION_VALUE(VALTYPE, FUNC) avr_function_value (VALTYPE, FUNC) -/* A C expression to create an RTX representing the place where a - function returns a value of data type VALTYPE. VALTYPE is a tree - node representing a data type. Write `TYPE_MODE (VALTYPE)' to get - the machine mode used to represent that type. On many machines, - only the mode is relevant. (Actually, on most machines, scalar - values are returned in the same place regardless of mode). - - The value of the expression is usually a `reg' RTX for the hard - register where the return value is stored. The value can also be a - `parallel' RTX, if the return value is in multiple places. See - `FUNCTION_ARG' for an explanation of the `parallel' form. - - If `TARGET_PROMOTE_FUNCTION_RETURN' is defined to return true, you - must apply the same promotion rules specified in `PROMOTE_MODE' if - VALTYPE is a scalar type. - - If the precise function being called is known, FUNC is a tree node - (`FUNCTION_DECL') for it; otherwise, FUNC is a null pointer. This - makes it possible to use a different value-returning convention - for specific functions when all their calls are known. - - `FUNCTION_VALUE' is not used for return vales with aggregate data - types, because these are returned in another way. See - `STRUCT_VALUE_REGNUM' and related macros, below. */ #define LIBCALL_VALUE(MODE) avr_libcall_value (MODE) -/* A C expression to create an RTX representing the place where a - library function returns a value of mode MODE. If the precise - function being called is known, FUNC is a tree node - (`FUNCTION_DECL') for it; otherwise, FUNC is a null pointer. This - makes it possible to use a different value-returning convention - for specific functions when all their calls are known. - - Note that "library function" in this context means a compiler - support routine, used to perform arithmetic, whose name is known - specially by the compiler and was not mentioned in the C code being - compiled. - - The definition of `LIBRARY_VALUE' need not be concerned aggregate - data types, because none of the library functions returns such - types. */ #define FUNCTION_VALUE_REGNO_P(N) ((int) (N) == RET_REGISTER) -/* A C expression that is nonzero if REGNO is the number of a hard - register in which the values of called function may come back. - - A register whose use for returning values is limited to serving as - the second of a pair (for a value of type `double', say) need not - be recognized by this macro. So for most machines, this definition - suffices: - - #define FUNCTION_VALUE_REGNO_P(N) ((N) == 0) - - If the machine has register windows, so that the caller and the - called function use different registers for the return value, this - macro should recognize only the caller's register numbers. */ #define DEFAULT_PCC_STRUCT_RETURN 0 -/* Define this macro to be 1 if all structure and union return values - must be in memory. Since this results in slower code, this should - be defined only if needed for compatibility with other compilers - or with an ABI. If you define this macro to be 0, then the - conventions used for structure and union return values are decided - by the `RETURN_IN_MEMORY' macro. - - If not defined, this defaults to the value 1. */ #define EPILOGUE_USES(REGNO) 0 -/* Define this macro as a C expression that is nonzero for registers - are used by the epilogue or the `return' pattern. The stack and - frame pointer registers are already be assumed to be used as - needed. */ - #define HAVE_POST_INCREMENT 1 -/* Define this macro if the machine supports post-increment - addressing. */ - #define HAVE_PRE_DECREMENT 1 -/* Similar for other kinds of addressing. */ #define CONSTANT_ADDRESS_P(X) CONSTANT_P (X) -/* A C expression that is 1 if the RTX X is a constant which is a - valid address. On most machines, this can be defined as - `CONSTANT_P (X)', but a few machines are more restrictive in which - constant addresses are supported. - - `CONSTANT_P' accepts integer-values expressions whose values are - not explicitly known, such as `symbol_ref', `label_ref', and - `high' expressions and `const' arithmetic expressions, in addition - to `const_int' and `const_double' expressions. */ #define MAX_REGS_PER_ADDRESS 1 -/* A number, the maximum number of registers that can appear in a - valid memory address. Note that it is up to you to specify a - value equal to the maximum number that `GO_IF_LEGITIMATE_ADDRESS' - would ever accept. */ #ifdef REG_OK_STRICT # define GO_IF_LEGITIMATE_ADDRESS(mode, operand, ADDR) \ @@ -1287,18 +422,6 @@ extern int avr_reg_order[]; goto ADDR; \ } #endif -/* A C compound statement with a conditional `goto LABEL;' executed - if X (an RTX) is a legitimate memory address on the target machine - for a memory operand of mode MODE. */ - -/* `REG_OK_FOR_BASE_P (X)' - A C expression that is nonzero if X (assumed to be a `reg' RTX) is - valid for use as a base register. For hard registers, it should - always accept those which the hardware permits and reject the - others. Whether the macro accepts or rejects pseudo registers - must be controlled by `REG_OK_STRICT' as described above. This - usually requires two variant definitions, of which `REG_OK_STRICT' - controls the one actually used. */ #define REG_OK_FOR_BASE_NOSTRICT_P(X) \ (REGNO (X) >= FIRST_PSEUDO_REGISTER || REG_OK_FOR_BASE_STRICT_P(X)) @@ -1311,24 +434,7 @@ extern int avr_reg_order[]; # define REG_OK_FOR_BASE_P(X) REG_OK_FOR_BASE_NOSTRICT_P (X) #endif -/* A C expression that is just like `REG_OK_FOR_BASE_P', except that - that expression may examine the mode of the memory reference in - MODE. You should define this macro if the mode of the memory - reference affects whether a register may be used as a base - register. If you define this macro, the compiler will use it - instead of `REG_OK_FOR_BASE_P'. */ #define REG_OK_FOR_INDEX_P(X) 0 -/* A C expression that is nonzero if X (assumed to be a `reg' RTX) is - valid for use as an index register. - - The difference between an index register and a base register is - that the index register may be scaled. If an address involves the - sum of two registers, neither one of them scaled, then either one - may be labeled the "base" and the other the "index"; but whichever - labeling is used must fit the machine's constraints of which - registers may serve in each capacity. The compiler will try both - labelings, looking for one that is valid, and will reload one or - both registers only if neither labeling works. */ #define LEGITIMIZE_ADDRESS(X, OLDX, MODE, WIN) \ { \ @@ -1336,26 +442,6 @@ extern int avr_reg_order[]; if (memory_address_p (MODE, X)) \ goto WIN; \ } -/* A C compound statement that attempts to replace X with a valid - memory address for an operand of mode MODE. WIN will be a C - statement label elsewhere in the code; the macro definition may use - - GO_IF_LEGITIMATE_ADDRESS (MODE, X, WIN); - - to avoid further processing if the address has become legitimate. - - X will always be the result of a call to `break_out_memory_refs', - and OLDX will be the operand that was given to that function to - produce X. - - The code generated by this macro should not alter the substructure - of X. If it transforms X into a more legitimate form, it should - assign X (which will always be a C variable) a new value. - - It is not necessary for this macro to come up with a legitimate - address. The compiler has standard ways of doing so in all cases. - In fact, it is safe for this macro to do nothing. But often a - machine-dependent strategy can generate better code. */ #define XEXP_(X,Y) (X) #define LEGITIMIZE_RELOAD_ADDRESS(X, MODE, OPNUM, TYPE, IND_LEVELS, WIN) \ @@ -1401,177 +487,35 @@ do { \ } \ } \ } while(0) -/* A C compound statement that attempts to replace X, which is an - address that needs reloading, with a valid memory address for an - operand of mode MODE. WIN will be a C statement label elsewhere - in the code. It is not necessary to define this macro, but it - might be useful for performance reasons. - - For example, on the i386, it is sometimes possible to use a single - reload register instead of two by reloading a sum of two pseudo - registers into a register. On the other hand, for number of RISC - processors offsets are limited so that often an intermediate - address needs to be generated in order to address a stack slot. - By defining LEGITIMIZE_RELOAD_ADDRESS appropriately, the - intermediate addresses generated for adjacent some stack slots can - be made identical, and thus be shared. - - *Note*: This macro should be used with caution. It is necessary - to know something of how reload works in order to effectively use - this, and it is quite easy to produce macros that build in too - much knowledge of reload internals. - - *Note*: This macro must be able to reload an address created by a - previous invocation of this macro. If it fails to handle such - addresses then the compiler may generate incorrect code or abort. - - The macro definition should use `push_reload' to indicate parts - that need reloading; OPNUM, TYPE and IND_LEVELS are usually - suitable to be passed unaltered to `push_reload'. - - The code generated by this macro must not alter the substructure of - X. If it transforms X into a more legitimate form, it should - assign X (which will always be a C variable) a new value. This - also applies to parts that you change indirectly by calling - `push_reload'. - - The macro definition may use `strict_memory_address_p' to test if - the address has become legitimate. - - If you want to change only a part of X, one standard way of doing - this is to use `copy_rtx'. Note, however, that is unshares only a - single level of rtl. Thus, if the part to be changed is not at the - top level, you'll need to replace first the top leve It is not - necessary for this macro to come up with a legitimate address; - but often a machine-dependent strategy can generate better code. */ #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL) \ if (GET_CODE (ADDR) == POST_INC || GET_CODE (ADDR) == PRE_DEC) \ goto LABEL -/* A C statement or compound statement with a conditional `goto - LABEL;' executed if memory address X (an RTX) can have different - meanings depending on the machine mode of the memory reference it - is used for or if the address is valid for some modes but not - others. - - Autoincrement and autodecrement addresses typically have - mode-dependent effects because the amount of the increment or - decrement is the size of the operand being addressed. Some - machines have other mode-dependent addresses. Many RISC machines - have no mode-dependent addresses. - - You may assume that ADDR is a valid address for the machine. */ #define LEGITIMATE_CONSTANT_P(X) 1 -/* A C expression that is nonzero if X is a legitimate constant for - an immediate operand on the target machine. You can assume that X - satisfies `CONSTANT_P', so you need not check this. In fact, `1' - is a suitable definition for this macro on machines where anything - `CONSTANT_P' is valid. */ #define REGISTER_MOVE_COST(MODE, FROM, TO) ((FROM) == STACK_REG ? 6 \ : (TO) == STACK_REG ? 12 \ : 2) -/* A C expression for the cost of moving data from a register in class - FROM to one in class TO. The classes are expressed using the - enumeration values such as `GENERAL_REGS'. A value of 2 is the - default; other values are interpreted relative to that. - - It is not required that the cost always equal 2 when FROM is the - same as TO; on some machines it is expensive to move between - registers if they are not general registers. - - If reload sees an insn consisting of a single `set' between two - hard registers, and if `REGISTER_MOVE_COST' applied to their - classes returns a value of 2, reload does not check to ensure that - the constraints of the insn are met. Setting a cost of other than - 2 will allow reload to verify that the constraints are met. You - should do this if the `movM' pattern's constraints do not allow - such copying. */ #define MEMORY_MOVE_COST(MODE,CLASS,IN) ((MODE)==QImode ? 2 : \ (MODE)==HImode ? 4 : \ (MODE)==SImode ? 8 : \ (MODE)==SFmode ? 8 : 16) -/* A C expression for the cost of moving data of mode M between a - register and memory. A value of 4 is the default; this cost is - relative to those in `REGISTER_MOVE_COST'. - - If moving between registers and memory is more expensive than - between two registers, you should define this macro to express the - relative cost. */ #define BRANCH_COST 0 -/* A C expression for the cost of a branch instruction. A value of 1 - is the default; other values are interpreted relative to that. - - Here are additional macros which do not specify precise relative - costs, but only that certain actions are more expensive than GCC would - ordinarily expect. */ #define SLOW_BYTE_ACCESS 0 -/* 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. - - When this macro is not defined, the compiler will access a field by - finding the smallest containing object; when it is defined, a - fullword load will be used if alignment permits. Unless bytes - accesses are faster than word accesses, using word accesses is - preferable since it may eliminate subsequent memory access if - subsequent accesses occur to other fields in the same word of the - structure, but to different bytes. - - `SLOW_UNALIGNED_ACCESS' - Define this macro to be the value 1 if unaligned accesses have a - cost many times greater than aligned accesses, for example if they - are emulated in a trap handler. - - When this macro is nonzero, the compiler will act as if - `STRICT_ALIGNMENT' were nonzero when generating code for block - moves. This can cause significantly more instructions to be - produced. Therefore, do not set this macro nonzero if unaligned - accesses only add a cycle or two to the time for a memory access. - - If the value of this macro is always zero, it need not be defined. - - `MOVE_RATIO' - The number of scalar move insns which should be generated instead - of a string move insn or a library call. Increasing the value - will always make code faster, but eventually incurs high cost in - increased code size. - - If you don't define this, a reasonable default is used. */ #define NO_FUNCTION_CSE -/* 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_RECURSIVE_FUNCTION_CSE -/* Define this macro if it is as good or better for a function to call - itself with an explicit address than to call an address kept in a - register. */ #define TEXT_SECTION_ASM_OP "\t.text" -/* A C expression whose value is a string containing the assembler - operation that should precede instructions and read-only data. - Normally `"\t.text"' is right. */ #define DATA_SECTION_ASM_OP "\t.data" -/* A C expression whose value is a string containing the assembler - operation to identify the following data as writable initialized - data. Normally `"\t.data"' is right. */ #define BSS_SECTION_ASM_OP "\t.section .bss" -/* If defined, a C expression whose value is a string, including - spacing, containing the assembler operation to identify the - following data as uninitialized global data. If not defined, and - neither `ASM_OUTPUT_BSS' nor `ASM_OUTPUT_ALIGNED_BSS' are defined, - uninitialized global data will be output in the data section if - `-fno-common' is passed, otherwise `ASM_OUTPUT_COMMON' will be - used. */ /* Define the pseudo-ops used to switch to the .ctors and .dtors sections. There are no shared libraries on this target, and these sections are @@ -1584,17 +528,10 @@ do { \ #define DTORS_SECTION_ASM_OP "\t.section .dtors,\"a\",@progbits" #define TARGET_ASM_CONSTRUCTOR avr_asm_out_ctor -/* If defined, a function that outputs assembler code to arrange to - call the function referenced by SYMBOL at initialization time. */ #define TARGET_ASM_DESTRUCTOR avr_asm_out_dtor -/* This is like `TARGET_ASM_CONSTRUCTOR' but used for termination - functions rather than initialization functions. */ #define EXTRA_SECTIONS in_progmem -/* A list of names for sections other than the standard two, which are - `in_text' and `in_data'. You need not define this macro on a - system with no other sections (that GCC needs to use). */ #define EXTRA_SECTION_FUNCTIONS \ \ @@ -1611,82 +548,27 @@ progmem_section (void) \ in_section = in_progmem; \ } \ } -/* `EXTRA_SECTION_FUNCTIONS' - One or more functions to be defined in `varasm.c'. These - functions should do jobs analogous to those of `text_section' and - `data_section', for your additional sections. Do not define this - macro if you do not define `EXTRA_SECTIONS'. */ #define READONLY_DATA_SECTION data_section -/* On most machines, read-only variables, constants, and jump tables - are placed in the text section. If this is not the case on your - machine, this macro should be defined to be the name of a function - (either `data_section' or a function defined in `EXTRA_SECTIONS') - that switches to the section to be used for read-only items. - - If these items should be placed in the text section, this macro - should not be defined. */ #define JUMP_TABLES_IN_TEXT_SECTION 0 -/* Define this macro if jump tables (for `tablejump' insns) should be - output in the text section, along with the assembler instructions. - Otherwise, the readonly data section is used. - - This macro is irrelevant if there is no separate readonly data - section. */ #define ASM_COMMENT_START " ; " -/* A C string constant describing how to begin a comment in the target - assembler language. The compiler assumes that the comment will - end at the end of the line. */ #define ASM_APP_ON "/* #APP */\n" -/* A C string constant for text to be output before each `asm' - statement or group of consecutive ones. Normally this is - `"#APP"', which is a comment that has no effect on most assemblers - but tells the GNU assembler that it must check the lines that - follow for all valid assembler constructs. */ #define ASM_APP_OFF "/* #NOAPP */\n" -/* A C string constant for text to be output after each `asm' - statement or group of consecutive ones. Normally this is - `"#NO_APP"', which tells the GNU assembler to resume making the - time-saving assumptions that are valid for ordinary compiler - output. */ #define ASM_OUTPUT_SOURCE_LINE(STREAM, LINE, COUNTER) \ fprintf (STREAM,"/* line: %d */\n",LINE) -/* A C statement to output DBX or SDB debugging information before - code for line number LINE of the current source file to the stdio - stream STREAM. - - This macro need not be defined if the standard form of debugging - information for the debugger in use is appropriate. */ /* Switch into a generic section. */ #define TARGET_ASM_NAMED_SECTION default_elf_asm_named_section #define ASM_OUTPUT_ASCII(FILE, P, SIZE) gas_output_ascii (FILE,P,SIZE) -/* `ASM_OUTPUT_ASCII (STREAM, PTR, LEN)' - output_ascii (FILE, P, SIZE) - A C statement to output to the stdio stream STREAM an assembler - instruction to assemble a string constant containing the LEN bytes - at PTR. PTR will be a C expression of type `char *' and LEN a C - expression of type `int'. - - If the assembler has a `.ascii' pseudo-op as found in the Berkeley - Unix assembler, do not define the macro `ASM_OUTPUT_ASCII'. */ #define IS_ASM_LOGICAL_LINE_SEPARATOR(C) ((C) == '\n' \ || ((C) == '$')) -/* Define this macro as a C expression which is nonzero if C is used - as a logical line separator by the assembler. - - If you do not define this macro, the default is that only the - character `;' is treated as a logical line separator. */ - -/* These macros are provided by `real.h' for writing the definitions of - `ASM_OUTPUT_DOUBLE' and the like: */ #define ASM_OUTPUT_COMMON(STREAM, NAME, SIZE, ROUNDED) \ do { \ @@ -1694,24 +576,9 @@ do { \ assemble_name ((STREAM), (NAME)); \ fprintf ((STREAM), ",%lu,1\n", (unsigned long)(SIZE)); \ } while (0) -/* A C statement (sans semicolon) to output to the stdio stream - STREAM 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. - - Use the expression `assemble_name (STREAM, NAME)' to output the - name itself; before and after that, output the additional - assembler syntax for defining the name, and a newline. - - This macro controls how the assembler definitions of uninitialized - common global variables are output. */ #define ASM_OUTPUT_BSS(FILE, DECL, NAME, SIZE, ROUNDED) \ asm_output_bss ((FILE), (DECL), (NAME), (SIZE), (ROUNDED)) -/* A C statement (sans semicolon) to output to the stdio stream - STREAM the assembler definition of uninitialized global DECL 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(STREAM, NAME, SIZE, ROUNDED) \ do { \ @@ -1719,17 +586,6 @@ do { \ assemble_name ((STREAM), (NAME)); \ fprintf ((STREAM), ",%d\n", (int)(SIZE)); \ } while (0) -/* A C statement (sans semicolon) to output to the stdio stream - STREAM 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. - - Use the expression `assemble_name (STREAM, NAME)' to output the - name itself; before and after that, output the additional - assembler syntax for defining the name, and a newline. - - This macro controls how the assembler definitions of uninitialized - static variables are output. */ #undef TYPE_ASM_OP #undef SIZE_ASM_OP @@ -1758,29 +614,11 @@ do { \ ASM_OUTPUT_LABEL (FILE, NAME); \ } while (0) -/* A C statement (sans semicolon) to output to the stdio stream - STREAM any text necessary for declaring the name NAME of a - function which is being defined. This macro is responsible for - outputting the label definition (perhaps using - `ASM_OUTPUT_LABEL'). The argument DECL is the `FUNCTION_DECL' - tree node representing the function. - - If this macro is not defined, then the function name is defined in - the usual manner as a label (by means of `ASM_OUTPUT_LABEL'). */ - #define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \ do { \ if (!flag_inhibit_size_directive) \ ASM_OUTPUT_MEASURED_SIZE (FILE, FNAME); \ } while (0) -/* A C statement (sans semicolon) to output to the stdio stream - STREAM any text necessary for declaring the size of a function - which is being defined. The argument NAME is the name of the - function. The argument DECL is the `FUNCTION_DECL' tree node - representing the function. - - If this macro is not defined, then the function size is not - defined. */ #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \ do { \ @@ -1794,15 +632,6 @@ do { \ } \ ASM_OUTPUT_LABEL(FILE, NAME); \ } while (0) -/* A C statement (sans semicolon) to output to the stdio stream - STREAM any text necessary for declaring the name NAME of an - initialized variable which is being defined. This macro must - output the label definition (perhaps using `ASM_OUTPUT_LABEL'). - The argument DECL is the `VAR_DECL' tree node representing the - variable. - - If this macro is not defined, then the variable name is defined in - the usual manner as a label (by means of `ASM_OUTPUT_LABEL'). */ #undef ASM_FINISH_DECLARE_OBJECT #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END) \ @@ -1820,15 +649,6 @@ do { \ } \ } while (0) -/* A C statement (sans semicolon) to finish up declaring a variable - name once the compiler has processed its initializer fully and - thus has had a chance to determine the size of an array when - controlled by an initializer. This is used on systems where it's - necessary to declare something about the size of the object. - - If you don't define this macro, that is equivalent to defining it - to do nothing. */ - #define ESCAPES \ "\1\1\1\1\1\1\1\1btn\1fr\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\ @@ -1878,79 +698,12 @@ do { \ } \ while (0) -/* A C statement (sans semicolon) to output to the stdio stream - STREAM some commands that will make the label NAME weak; that is, - available for reference from other files but only used if no other - definition is available. Use the expression `assemble_name - (STREAM, NAME)' to output the name itself; before and after that, - output the additional assembler syntax for making that name weak, - and a newline. - - If you don't define this macro, GCC will not support weak - symbols and you should not define the `SUPPORTS_WEAK' macro. -*/ - #define SUPPORTS_WEAK 1 -/* A C expression which evaluates to true if the target supports weak - symbols. - - If you don't define this macro, `defaults.h' provides a default - definition. If `ASM_WEAKEN_LABEL' is defined, the default - definition is `1'; otherwise, it is `0'. Define this macro if you - want to control weak symbol support with a compiler flag such as - `-melf'. - - `MAKE_DECL_ONE_ONLY' - A C statement (sans semicolon) to mark DECL to be emitted as a - public symbol such that extra copies in multiple translation units - will be discarded by the linker. Define this macro if your object - file format provides support for this concept, such as the `COMDAT' - section flags in the Microsoft Windows PE/COFF format, and this - support requires changes to DECL, such as putting it in a separate - section. - - `SUPPORTS_WEAK' - A C expression which evaluates to true if the target supports - one-only semantics. - - If you don't define this macro, `varasm.c' provides a default - definition. If `MAKE_DECL_ONE_ONLY' is defined, the default - definition is `1'; otherwise, it is `0'. Define this macro if you - want to control weak symbol support with a compiler flag, or if - setting the `DECL_ONE_ONLY' flag is enough to mark a declaration to - be emitted as one-only. */ #define ASM_GENERATE_INTERNAL_LABEL(STRING, PREFIX, NUM) \ sprintf (STRING, "*.%s%lu", PREFIX, (unsigned long)(NUM)) -/* A C statement to store into the string STRING a label whose name - is made from the string PREFIX and the number NUM. - - This string, when output subsequently by `assemble_name', should - produce the output that `(*targetm.asm_out.internal_label)' would produce - with the same PREFIX and NUM. - - If the string begins with `*', then `assemble_name' will output - the rest of the string unchanged. It is often convenient for - `ASM_GENERATE_INTERNAL_LABEL' to use `*' in this way. If the - string doesn't start with `*', then `ASM_OUTPUT_LABELREF' gets to - output the string, and may change it. (Of course, - `ASM_OUTPUT_LABELREF' is also part of your machine description, so - you should know what it does on your machine.) */ - -/* `ASM_OUTPUT_WEAK_ALIAS (STREAM, NAME, VALUE)' - A C statement to output to the stdio stream STREAM assembler code - which defines (equates) the weak symbol NAME to have the value - VALUE. - - Define this macro if the target only supports weak aliases; define - ASM_OUTPUT_DEF instead if possible. */ #define HAS_INIT_SECTION 1 -/* If defined, `main' will not call `__main' as described above. - This macro should be defined for systems that control the contents - of the init section on a symbol-by-symbol basis, such as OSF/1, - and should not be defined explicitly for systems that support - `INIT_SECTION_ASM_OP'. */ #define REGISTER_NAMES { \ "r0","r1","r2","r3","r4","r5","r6","r7", \ @@ -1958,100 +711,18 @@ sprintf (STRING, "*.%s%lu", PREFIX, (unsigned long)(NUM)) "r16","r17","r18","r19","r20","r21","r22","r23", \ "r24","r25","r26","r27","r28","r29","r30","r31", \ "__SPL__","__SPH__","argL","argH"} -/* A C initializer containing the assembler's names for the machine - registers, each one as a C string constant. This is what - translates register numbers in the compiler into assembler - language. */ #define FINAL_PRESCAN_INSN(insn, operand, nop) final_prescan_insn (insn, operand,nop) -/* If defined, a C statement to be executed just prior to the output - of assembler code for INSN, to modify the extracted operands so - they will be output differently. - - Here the argument OPVEC is the vector containing the operands - extracted from INSN, and NOPERANDS is the number of elements of - the vector which contain meaningful data for this insn. The - contents of this vector are what will be used to convert the insn - template into assembler code, so you can change the assembler - output by changing the contents of the vector. - - This macro is useful when various assembler syntaxes share a single - file of instruction patterns; by defining this macro differently, - you can cause a large class of instructions to be output - differently (such as with rearranged operands). Naturally, - variations in assembler syntax affecting individual insn patterns - ought to be handled by writing conditional output routines in - those patterns. - - If this macro is not defined, it is equivalent to a null statement. */ #define PRINT_OPERAND(STREAM, X, CODE) print_operand (STREAM, X, CODE) -/* A C compound statement to output to stdio stream STREAM the - assembler syntax for an instruction operand X. X is an RTL - expression. - - CODE is a value that can be used to specify one of several ways of - printing the operand. It is used when identical operands must be - printed differently depending on the context. CODE comes from the - `%' specification that was used to request printing of the - operand. If the specification was just `%DIGIT' then CODE is 0; - if the specification was `%LTR DIGIT' then CODE is the ASCII code - for LTR. - - If X is a register, this macro should print the register's name. - The names can be found in an array `reg_names' whose type is `char - *[]'. `reg_names' is initialized from `REGISTER_NAMES'. - - When the machine description has a specification `%PUNCT' (a `%' - followed by a punctuation character), this macro is called with a - null pointer for X and the punctuation character for CODE. */ #define PRINT_OPERAND_PUNCT_VALID_P(CODE) ((CODE) == '~') -/* A C expression which evaluates to true if CODE is a valid - punctuation character for use in the `PRINT_OPERAND' macro. If - `PRINT_OPERAND_PUNCT_VALID_P' is not defined, it means that no - punctuation characters (except for the standard one, `%') are used - in this way. */ #define PRINT_OPERAND_ADDRESS(STREAM, X) print_operand_address(STREAM, X) -/* A C compound statement to output to stdio stream STREAM the - assembler syntax for an instruction operand that is a memory - reference whose address is X. X is an RTL expression. */ #define USER_LABEL_PREFIX "" -/* `LOCAL_LABEL_PREFIX' - `REGISTER_PREFIX' - `IMMEDIATE_PREFIX' - If defined, C string expressions to be used for the `%R', `%L', - `%U', and `%I' options of `asm_fprintf' (see `final.c'). These - are useful when a single `md' file must support multiple assembler - formats. In that case, the various `tm.h' files can define these - macros differently. */ #define ASSEMBLER_DIALECT AVR_ENHANCED -/* If your target supports multiple dialects of assembler language - (such as different opcodes), define this macro as a C expression - that gives the numeric index of the assembler language dialect to - use, with zero as the first variant. - - If this macro is defined, you may use constructs of the form - `{option0|option1|option2...}' in the output templates of patterns - (*note Output Template::.) or in the first argument of - `asm_fprintf'. This construct outputs `option0', `option1' or - `option2', etc., if the value of `ASSEMBLER_DIALECT' is zero, one - or two, etc. Any special characters within these strings retain - their usual meaning. - - If you do not define this macro, the characters `{', `|' and `}' - do not have any special meaning when used in templates or operands - to `asm_fprintf'. - - Define the macros `REGISTER_PREFIX', `LOCAL_LABEL_PREFIX', - `USER_LABEL_PREFIX' and `IMMEDIATE_PREFIX' if you can express the - variations in assembler language syntax with that mechanism. - Define `ASSEMBLER_DIALECT' and use the `{option0|option1}' syntax - if the syntax variant are larger and involve such things as - different opcodes or operand order. */ #define ASM_OUTPUT_REG_PUSH(STREAM, REGNO) \ { \ @@ -2059,9 +730,6 @@ sprintf (STRING, "*.%s%lu", PREFIX, (unsigned long)(NUM)) abort (); \ fprintf (STREAM, "\tpush\tr%d", REGNO); \ } -/* A C expression to output to STREAM some assembler code which will - push hard register number REGNO onto the stack. The code need not - be optimal, since this macro is used only when profiling. */ #define ASM_OUTPUT_REG_POP(STREAM, REGNO) \ { \ @@ -2069,139 +737,40 @@ sprintf (STRING, "*.%s%lu", PREFIX, (unsigned long)(NUM)) abort (); \ fprintf (STREAM, "\tpop\tr%d", REGNO); \ } -/* A C expression to output to STREAM some assembler code which will - pop hard register number REGNO off of the stack. The code need - not be optimal, since this macro is used only when profiling. */ #define ASM_OUTPUT_ADDR_VEC_ELT(STREAM, VALUE) \ avr_output_addr_vec_elt(STREAM, VALUE) -/* This macro should be provided on machines where the addresses in a - dispatch table are absolute. - - The definition should be a C statement to output to the stdio - stream STREAM an assembler pseudo-instruction to generate a - reference to a label. VALUE is the number of an internal label - whose definition is output using `(*targetm.asm_out.internal_label)'. For - example, - - fprintf (STREAM, "\t.word L%d\n", VALUE) */ #define ASM_OUTPUT_CASE_LABEL(STREAM, PREFIX, NUM, TABLE) \ progmem_section (), (*targetm.asm_out.internal_label) (STREAM, PREFIX, NUM) -/* `ASM_OUTPUT_CASE_LABEL (STREAM, PREFIX, NUM, TABLE)' - Define this if the label before a jump-table needs to be output - specially. The first three arguments are the same as for - `(*targetm.asm_out.internal_label)'; the fourth argument is the jump-table - which follows (a `jump_insn' containing an `addr_vec' or - `addr_diff_vec'). - - This feature is used on system V to output a `swbeg' statement for - the table. - - If this macro is not defined, these labels are output with - `(*targetm.asm_out.internal_label)'. */ - -/* `ASM_OUTPUT_CASE_END (STREAM, NUM, TABLE)' - Define this if something special must be output at the end of a - jump-table. The definition should be a C statement to be executed - after the assembler code for the table is written. It should write - the appropriate code to stdio stream STREAM. The argument TABLE - is the jump-table insn, and NUM is the label-number of the - preceding label. - - If this macro is not defined, nothing special is output at the end - of the jump-table. */ - #define ASM_OUTPUT_SKIP(STREAM, N) \ fprintf (STREAM, "\t.skip %lu,0\n", (unsigned long)(N)) -/* A C statement to output to the stdio stream STREAM an assembler - instruction to advance the location counter by NBYTES bytes. - Those bytes should be zero when loaded. NBYTES will be a C - expression of type `int'. */ #define ASM_OUTPUT_ALIGN(STREAM, POWER) -/* A C statement to output to the stdio stream STREAM an assembler - command to advance the location counter to a multiple of 2 to the - POWER bytes. POWER will be a C expression of type `int'. */ #define CASE_VECTOR_MODE HImode -/* An alias for a machine mode name. This is the machine mode that - elements of a jump-table should have. */ extern int avr_case_values_threshold; #define CASE_VALUES_THRESHOLD avr_case_values_threshold -/* `CASE_VALUES_THRESHOLD' - Define this to be the smallest number of different values for - which it is best to use a jump-table instead of a tree of - conditional branches. The default is four for machines with a - `casesi' instruction and five otherwise. This is best for most - machines. */ #undef WORD_REGISTER_OPERATIONS -/* Define this macro if operations between registers with integral - mode smaller than a word are always performed on the entire - register. Most RISC machines have this property and most CISC - machines do not. */ #define MOVE_MAX 4 -/* The maximum number of bytes that a single instruction can move - quickly between memory and registers or between two memory - locations. */ #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1 -/* A C expression which is nonzero if on this machine it is safe to - "convert" an integer of INPREC bits to one of OUTPREC bits (where - OUTPREC is smaller than INPREC) by merely operating on it as if it - had only OUTPREC bits. - - On many machines, this expression can be 1. - - When `TRULY_NOOP_TRUNCATION' returns 1 for a pair of sizes for - modes for which `MODES_TIEABLE_P' is 0, suboptimal code can result. - If this is the case, making `TRULY_NOOP_TRUNCATION' return 0 in - such cases may improve things. */ #define Pmode HImode -/* An alias for the machine mode for pointers. On most machines, - define this to be the integer mode corresponding to the width of a - hardware pointer; `SImode' on 32-bit machine or `DImode' on 64-bit - machines. On some machines you must define this to be one of the - partial integer modes, such as `PSImode'. - - The width of `Pmode' must be at least as large as the value of - `POINTER_SIZE'. If it is not equal, you must define the macro - `POINTERS_EXTEND_UNSIGNED' to specify how pointers are extended to - `Pmode'. */ #define FUNCTION_MODE HImode -/* An alias for the machine mode used for memory references to - functions being called, in `call' RTL expressions. On most - machines this should be `QImode'. */ + /* 1 3 */ #define INTEGRATE_THRESHOLD(DECL) (1 + (3 * list_length (DECL_ARGUMENTS (DECL)) / 2)) -/* A C expression for the maximum number of instructions above which - the function DECL should not be inlined. DECL is a - `FUNCTION_DECL' node. - - The default definition of this macro is 64 plus 8 times the number - of arguments that the function accepts. Some people think a larger - threshold should be used on RISC machines. */ - #define DOLLARS_IN_IDENTIFIERS 0 -/* Define this macro to control use of the character `$' in identifier - names. 0 means `$' is not allowed by default; 1 means it is - allowed. 1 is the default; there is no need to define this macro - in that case. This macro controls the compiler proper; it does - not affect the preprocessor. */ #define NO_DOLLAR_IN_LABEL 1 -/* Define this macro if the assembler does not accept the character - `$' in label names. By default constructors and destructors in - G++ have `$' in the identifiers. If this macro is defined, `.' is - used instead. */ #define GIV_SORT_CRITERION(X, Y) \ if (GET_CODE ((X)->add_val) == CONST_INT \ @@ -2220,14 +789,8 @@ extern int avr_case_values_threshold; #define TRAMPOLINE_TEMPLATE(FILE) \ internal_error ("trampolines not supported") -/* Length in units of the trampoline for entering a nested function. */ - #define TRAMPOLINE_SIZE 4 -/* Emit RTL insns to initialize the variable parts of a trampoline. - FNADDR is an RTX for the address of the function's pure code. - CXT is an RTX for the static chain value for the function. */ - #define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT) \ { \ emit_move_insn (gen_rtx (MEM, HImode, plus_constant ((TRAMP), 2)), CXT); \ @@ -2258,36 +821,12 @@ extern int avr_case_values_threshold; #define ADJUST_INSN_LENGTH(INSN, LENGTH) (LENGTH =\ adjust_insn_length (INSN, LENGTH)) -/* 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. If updating is - required, INSN must not be a varying-length insn. - - This macro will normally not be required. A case in which it is - required is the ROMP. On this machine, the size of an `addr_vec' - insn must be increased by two to compensate for the fact that - alignment may be required. */ #define TARGET_MEM_FUNCTIONS -/* Define this macro if GCC should generate calls to the System V - (and ANSI C) library functions `memcpy' and `memset' rather than - the BSD functions `bcopy' and `bzero'. */ #define CPP_SPEC "%{posix:-D_POSIX_SOURCE}" -/* A C string constant that tells the GCC driver program options to - pass to CPP. It can also specify how to translate options you - give to GCC into options for GCC to pass to the CPP. - - Do not define this macro if it does not need to do anything. */ - #define CC1_SPEC "%{profile:-p}" -/* A C string constant that tells the GCC driver program options to - pass to `cc1'. It can also specify how to translate options you - give to GCC into options for GCC to pass to the `cc1'. - - Do not define this macro if it does not need to do anything. */ #define CC1PLUS_SPEC "%{!frtti:-fno-rtti} \ %{!fenforce-eh-specs:-fno-enforce-eh-specs} \ @@ -2296,12 +835,6 @@ extern int avr_case_values_threshold; pass to `cc1plus'. */ #define ASM_SPEC "%{mmcu=*:-mmcu=%*}" -/* A C string constant that tells the GCC driver program how to - run any programs which cleanup after the normal assembler. - Normally, this is not needed. See the file `mips.h' for an - example of this. - - Do not define this macro if it does not need to do anything. */ #define LINK_SPEC " %{!mmcu*:-m avr2}\ %{mmcu=at90s1200|mmcu=attiny1*|mmcu=attiny28:-m avr1} \ @@ -2311,49 +844,18 @@ extern int avr_case_values_threshold; %{mmcu=atmega16*|mmcu=atmega32*|mmcu=atmega64|mmcu=atmega128|mmcu=at94k:-m avr5}\ %{mmcu=atmega64|mmcu=atmega128|mmcu=atmega162|mmcu=atmega169: -Tdata 0x800100} " -/* A C string constant that tells the GCC driver program options to - pass to the linker. It can also specify how to translate options - you give to GCC into options for GCC to pass to the linker. - - Do not define this macro if it does not need to do anything. */ - #define LIB_SPEC \ "%{!mmcu=at90s1*:%{!mmcu=attiny1*:%{!mmcu=attiny28: -lc }}}" -/* Another C string constant used much like `LINK_SPEC'. The - difference between the two is that `LIB_SPEC' is used at the end - of the command given to the linker. - - If this macro is not defined, a default is provided that loads the - standard C library from the usual place. See `gcc.c'. */ #define LIBSTDCXX "-lgcc" /* No libstdc++ for now. Empty string doesn't work. */ #define LIBGCC_SPEC \ "%{!mmcu=at90s1*:%{!mmcu=attiny1*:%{!mmcu=attiny28: -lgcc }}}" -/* Another C string constant that tells the GCC driver program how - and when to place a reference to `libgcc.a' into the linker - command line. This constant is placed both before and after the - value of `LIB_SPEC'. - - If this macro is not defined, the GCC driver provides a default - that passes the string `-lgcc' to the linker unless the `-shared' - option is specified. */ #define STARTFILE_SPEC "%(crt_binutils)" -/* Another C string constant used much like `LINK_SPEC'. The - difference between the two is that `STARTFILE_SPEC' is used at the - very beginning of the command given to the linker. - - If this macro is not defined, a default is provided that loads the - standard C startup file from the usual place. See `gcc.c'. */ #define ENDFILE_SPEC "" -/* Another C string constant used much like `LINK_SPEC'. The - difference between the two is that `ENDFILE_SPEC' is used at the - very end of the command given to the linker. - - Do not define this macro if it does not need to do anything. */ #define CRT_BINUTILS_SPECS "\ %{mmcu=at90s1200|mmcu=avr1:crts1200.o%s} \ @@ -2395,10 +897,6 @@ extern int avr_case_values_threshold; #define EXTRA_SPECS {"crt_binutils", CRT_BINUTILS_SPECS}, -/* Define this macro to provide additional specifications to put in - the `specs' file that can be used in various specifications like - `CC1_SPEC'. */ - /* This is the default without any -mmcu=* option (AT90S*). */ #define MULTILIB_DEFAULTS { "mmcu=avr2" }