101 lines
2.6 KiB
C
101 lines
2.6 KiB
C
/* Configuration ----------------------------------------------------- */
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#include <unistd.h>
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#include <stdio.h>
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#ifdef ENABLE_MULTICORE
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#define CORES 8
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#else
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#define CORES 1
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#endif
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#ifndef BIT64
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#define CELL int32_t
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#define CELL_MIN INT_MIN + 1
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#define CELL_MAX INT_MAX - 1
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#else
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#define CELL int64_t
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#define CELL_MIN LLONG_MIN + 1
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#define CELL_MAX LLONG_MAX - 1
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#endif
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#ifndef IMAGE_SIZE
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#define IMAGE_SIZE 524288 /* Amount of RAM, in cells */
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#endif
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#ifndef ADDRESSES
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#define ADDRESSES 256 /* Depth of address stack */
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#endif
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#ifndef STACK_DEPTH
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#define STACK_DEPTH 256 /* Depth of data stack */
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#endif
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#define TIB vm->memory[7] /* Location of TIB */
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#define MAX_DEVICES 32
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#define MAX_OPEN_FILES 32
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typedef struct NgaState NgaState;
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typedef void (*Handler)(NgaState *);
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struct NgaCore {
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CELL sp, rp, ip; /* Stack & instruction pointers */
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CELL active; /* Is core active? */
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CELL u; /* Should next operation be */
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/* unsigned? */
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CELL data[STACK_DEPTH]; /* The data stack */
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CELL address[ADDRESSES]; /* The address stack */
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#ifdef ENABLE_MULTICORE
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CELL registers[24]; /* Internal Registers */
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#endif
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};
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struct NgaState {
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/* System Memory */
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CELL memory[IMAGE_SIZE + 1];
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/* CPU Cores */
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struct NgaCore cpu[CORES];
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int active;
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/* I/O Devices */
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int devices;
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Handler IO_deviceHandlers[MAX_DEVICES];
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Handler IO_queryHandlers[MAX_DEVICES];
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CELL Dictionary, NotFound, interpret; /* Interfacing */
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char string_data[8192];
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#ifdef ENABLE_FLOATS
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double Floats[256], AFloats[256]; /* Floating Point */
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CELL fsp, afsp;
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#endif
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/* Scripting */
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char **sys_argv;
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int sys_argc;
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char scripting_sources[64][8192];
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int current_source;
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int perform_abort;
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CELL currentLine;
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CELL ignoreToEOL, ignoreToEOF;
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/* Configuration of code & test fences for Unu */
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char code_start[256], code_end[256];
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char test_start[256], test_end[256];
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int codeBlocks;
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FILE *OpenFileHandles[MAX_OPEN_FILES];
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};
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/* Function Prototypes ----------------------------------------------- */
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extern CELL stack_pop(NgaState *);
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extern void stack_push(NgaState *, CELL);
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extern CELL string_inject(NgaState *, char *, CELL);
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extern char *string_extract(NgaState *, CELL);
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extern void process_opcode_bundle(NgaState *, CELL);
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extern void include_file(NgaState *, char *, int);
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extern void register_device(NgaState *, void *, void *);
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extern void execute(NgaState *, CELL);
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