109 lines
2.9 KiB
C
109 lines
2.9 KiB
C
///////////////////////////////////////////////////////////////////////
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//
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// Assembly Code Naming Conventions:
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//
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// Dispatch table <classname>_dispTab
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// Method entry point <classname>.<method>
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// Class init code <classname>_init
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// Abort method entry <classname>.<method>.Abort
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// Prototype object <classname>_protObj
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// Integer constant int_const<Symbol>
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// String constant str_const<Symbol>
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//
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///////////////////////////////////////////////////////////////////////
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#include "stringtab.h"
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#define MAXINT 100000000
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#define WORD_SIZE 4
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#define LOG_WORD_SIZE 2 // for logical shifts
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// Global names
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#define CLASSNAMETAB "class_nameTab"
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#define CLASSOBJTAB "class_objTab"
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#define INTTAG "_int_tag"
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#define BOOLTAG "_bool_tag"
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#define STRINGTAG "_string_tag"
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#define HEAP_START "heap_start"
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// Naming conventions
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#define DISPTAB_SUFFIX "_dispTab"
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#define METHOD_SEP "."
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#define CLASSINIT_SUFFIX "_init"
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#define PROTOBJ_SUFFIX "_protObj"
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#define OBJECTPROTOBJ "Object" PROTOBJ_SUFFIX
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#define INTCONST_PREFIX "int_const"
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#define STRCONST_PREFIX "str_const"
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#define BOOLCONST_PREFIX "bool_const"
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#define EMPTYSLOT 0
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#define LABEL ":\n"
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#define STRINGNAME (char *) "String"
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#define INTNAME (char *) "Int"
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#define BOOLNAME (char *) "Bool"
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#define MAINNAME (char *) "Main"
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//
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// information about object headers
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//
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#define DEFAULT_OBJFIELDS 3
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#define TAG_OFFSET 0
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#define SIZE_OFFSET 1
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#define DISPTABLE_OFFSET 2
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#define STRING_SLOTS 1
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#define INT_SLOTS 1
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#define BOOL_SLOTS 1
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#define GLOBAL "\t.globl\t"
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#define ALIGN "\t.align\t2\n"
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#define WORD "\t.word\t"
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//
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// register names
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//
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#define ZERO "$zero" // Zero register
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#define ACC "$a0" // Accumulator
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#define A1 "$a1" // For arguments to prim funcs
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#define SELF "$s0" // Ptr to self (callee saves)
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#define T1 "$t1" // Temporary 1
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#define T2 "$t2" // Temporary 2
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#define T3 "$t3" // Temporary 3
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#define SP "$sp" // Stack pointer
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#define FP "$fp" // Frame pointer
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#define RA "$ra" // Return address
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//
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// Opcodes
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//
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#define JALR "\tjalr\t"
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#define JAL "\tjal\t"
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#define RET "\tjr\t" RA "\t"
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#define SW "\tsw\t"
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#define LW "\tlw\t"
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#define LI "\tli\t"
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#define LA "\tla\t"
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#define MOVE "\tmove\t"
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#define NEG "\tneg\t"
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#define ADD "\tadd\t"
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#define ADDI "\taddi\t"
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#define ADDU "\taddu\t"
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#define ADDIU "\taddiu\t"
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#define DIV "\tdiv\t"
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#define MUL "\tmul\t"
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#define SUB "\tsub\t"
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#define SLL "\tsll\t"
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#define BEQZ "\tbeqz\t"
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#define BRANCH "\tb\t"
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#define BEQ "\tbeq\t"
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#define BNE "\tbne\t"
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#define BLEQ "\tble\t"
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#define BLT "\tblt\t"
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#define BGT "\tbgt\t"
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