commit 78aaa6ccd4be18556bb363fd33de16801d0a344d Author: Denis Drakhnia Date: Mon Dec 11 17:36:53 2023 +0200 initial commit diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..567609b --- /dev/null +++ b/.gitignore @@ -0,0 +1 @@ +build/ diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..f288702 --- /dev/null +++ b/LICENSE @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. diff --git a/e2k-linux.txt b/e2k-linux.txt new file mode 100644 index 0000000..236ab4b --- /dev/null +++ b/e2k-linux.txt @@ -0,0 +1,12 @@ +[binaries] +c = 'e2k-linux-cc' +cpp = 'e2k-linux-c++' +ar = 'e2k-linux-ar' +strip = 'e2k-linux-strip' +exe_wrapper = 'qemu-e2k' + +[host_machine] +system = 'linux' +cpu_family = 'e2k' +cpu = 'e2k' +endian = 'little' diff --git a/examples/hello.bf b/examples/hello.bf new file mode 100644 index 0000000..8fa0f72 --- /dev/null +++ b/examples/hello.bf @@ -0,0 +1 @@ +++++++++[>++++[>++>+++>+++>+<<<<-]>+>+>->>+[<]<-]>>.>---.+++++++..+++.>>.<-.<.+++.------.--------.>>+.>++. diff --git a/examples/mandelbrot.bf b/examples/mandelbrot.bf new file mode 100644 index 0000000..e704ff4 --- /dev/null +++ b/examples/mandelbrot.bf @@ -0,0 +1,145 @@ + A mandelbrot set fractal viewer in brainfuck written by Erik Bosman ++++++++++++++[->++>>>+++++>++>+<<<<<<]>>>>>++++++>--->>>>>>>>>>+++++++++++++++[[ +>>>>>>>>>]+[<<<<<<<<<]>>>>>>>>>-]+[>>>>>>>>[-]>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>[-]+ +<<<<<<<+++++[-[->>>>>>>>>+<<<<<<<<<]>>>>>>>>>]>>>>>>>+>>>>>>>>>>>>>>>>>>>>>>>>>> +>+<<<<<<<<<<<<<<<<<[<<<<<<<<<]>>>[-]+[>>>>>>[>>>>>>>[-]>>]<<<<<<<<<[<<<<<<<<<]>> +>>>>>[-]+<<<<<<++++[-[->>>>>>>>>+<<<<<<<<<]>>>>>>>>>]>>>>>>+<<<<<<+++++++[-[->>> +>>>>>>+<<<<<<<<<]>>>>>>>>>]>>>>>>+<<<<<<<<<<<<<<<<[<<<<<<<<<]>>>[[-]>>>>>>[>>>>> +>>[-<<<<<<+>>>>>>]<<<<<<[->>>>>>+<<+<<<+<]>>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>> +[>>>>>>>>[-<<<<<<<+>>>>>>>]<<<<<<<[->>>>>>>+<<+<<<+<<]>>>>>>>>]<<<<<<<<<[<<<<<<< +<<]>>>>>>>[-<<<<<<<+>>>>>>>]<<<<<<<[->>>>>>>+<<+<<<<<]>>>>>>>>>+++++++++++++++[[ +>>>>>>>>>]+>[-]>[-]>[-]>[-]>[-]>[-]>[-]>[-]>[-]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>-]+[ +>+>>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>[>->>>>[-<<<<+>>>>]<<<<[->>>>+<<<<<[->>[ +-<<+>>]<<[->>+>>+<<<<]+>>>>>>>>>]<<<<<<<<[<<<<<<<<<]]>>>>>>>>>[>>>>>>>>>]<<<<<<< +<<[>[->>>>>>>>>+<<<<<<<<<]<<<<<<<<<<]>[->>>>>>>>>+<<<<<<<<<]<+>>>>>>>>]<<<<<<<<< +[>[-]<->>>>[-<<<<+>[<->-<<<<<<+>>>>>>]<[->+<]>>>>]<<<[->>>+<<<]<+<<<<<<<<<]>>>>> +>>>>[>+>>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>[>->>>>>[-<<<<<+>>>>>]<<<<<[->>>>>+ +<<<<<<[->>>[-<<<+>>>]<<<[->>>+>+<<<<]+>>>>>>>>>]<<<<<<<<[<<<<<<<<<]]>>>>>>>>>[>> +>>>>>>>]<<<<<<<<<[>>[->>>>>>>>>+<<<<<<<<<]<<<<<<<<<<<]>>[->>>>>>>>>+<<<<<<<<<]<< ++>>>>>>>>]<<<<<<<<<[>[-]<->>>>[-<<<<+>[<->-<<<<<<+>>>>>>]<[->+<]>>>>]<<<[->>>+<< +<]<+<<<<<<<<<]>>>>>>>>>[>>>>[-<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<+>>>>>>>>>>>>> +>>>>>>>>>>>>>>>>>>>>>>>]>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>+++++++++++++++[[>>>> +>>>>>]<<<<<<<<<-<<<<<<<<<[<<<<<<<<<]>>>>>>>>>-]+>>>>>>>>>>>>>>>>>>>>>+<<<[<<<<<< +<<<]>>>>>>>>>[>>>[-<<<->>>]+<<<[->>>->[-<<<<+>>>>]<<<<[->>>>+<<<<<<<<<<<<<[<<<<< +<<<<]>>>>[-]+>>>>>[>>>>>>>>>]>+<]]+>>>>[-<<<<->>>>]+<<<<[->>>>-<[-<<<+>>>]<<<[-> +>>+<<<<<<<<<<<<[<<<<<<<<<]>>>[-]+>>>>>>[>>>>>>>>>]>[-]+<]]+>[-<[>>>>>>>>>]<<<<<< +<<]>>>>>>>>]<<<<<<<<<[<<<<<<<<<]<<<<<<<[->+>>>-<<<<]>>>>>>>>>+++++++++++++++++++ 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+[->>>>>>>>>+<<<<<<<<<]<<<<<<<<<<]>[->>>>>>>>>+<<<<<<<<<]<+>>>>>>>>]<<<<<<<<<[>[- +]<->>>>[-<<<<+>[<->-<<<<<<+>>>>>>]<[->+<]>>>>]<<<[->>>+<<<]<+<<<<<<<<<]>>>>>>>>> +[>>>>[-<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<+>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> +]>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>[>>>[-<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<+> +>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>]>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>++++++++ ++++++++[[>>>>>>>>>]<<<<<<<<<-<<<<<<<<<[<<<<<<<<<]>>>>>>>>>-]+[>>>>>>>>[-<<<<<<<+ +>>>>>>>]<<<<<<<[->>>>>>>+<<<<<<+<]>>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>[>>>>>>[ +-]>>>]<<<<<<<<<[<<<<<<<<<]>>>>+>[-<-<<<<+>>>>>]>[-<<<<<<[->>>>>+<++<<<<]>>>>>[-< +<<<<+>>>>>]<->+>]<[->+<]<<<<<[->>>>>+<<<<<]>>>>>>[-]<<<<<<+>>>>[-<<<<->>>>]+<<<< +[->>>>->>>>>[>>[-<<->>]+<<[->>->[-<<<+>>>]<<<[->>>+<<<<<<<<<<<<[<<<<<<<<<]>>>[-] ++>>>>>>[>>>>>>>>>]>+<]]+>>>[-<<<->>>]+<<<[->>>-<[-<<+>>]<<[->>+<<<<<<<<<<<[<<<<< +<<<<]>>>>[-]+>>>>>[>>>>>>>>>]>[-]+<]]+>[-<[>>>>>>>>>]<<<<<<<<]>>>>>>>>]<<<<<<<<< +[<<<<<<<<<]>>>>[-<<<<+>>>>]<<<<[->>>>+>>>>>[>+>>[-<<->>]<<[->>+<<]>>>>>>>>]<<<<< +<<<+<[>[->>>>>+<<<<[->>>>-<<<<<<<<<<<<<<+>>>>>>>>>>>[->>>+<<<]<]>[->>>-<<<<<<<<< +<<<<<+>>>>>>>>>>>]<<]>[->>>>+<<<[->>>-<<<<<<<<<<<<<<+>>>>>>>>>>>]<]>[->>>+<<<]<< +<<<<<<<<<<]>>>>[-]<<<<]>>>[-<<<+>>>]<<<[->>>+>>>>>>[>+>[-<->]<[->+<]>>>>>>>>]<<< +<<<<<+<[>[->>>>>+<<<[->>>-<<<<<<<<<<<<<<+>>>>>>>>>>[->>>>+<<<<]>]<[->>>>-<<<<<<< +<<<<<<<+>>>>>>>>>>]<]>>[->>>+<<<<[->>>>-<<<<<<<<<<<<<<+>>>>>>>>>>]>]<[->>>>+<<<< +]<<<<<<<<<<<]>>>>>>+<<<<<<]]>>>>[-<<<<+>>>>]<<<<[->>>>+>>>>>[>>>>>>>>>]<<<<<<<<< +[>[->>>>>+<<<<[->>>>-<<<<<<<<<<<<<<+>>>>>>>>>>>[->>>+<<<]<]>[->>>-<<<<<<<<<<<<<< ++>>>>>>>>>>>]<<]>[->>>>+<<<[->>>-<<<<<<<<<<<<<<+>>>>>>>>>>>]<]>[->>>+<<<]<<<<<<< +<<<<<]]>[-]>>[-]>[-]>>>>>[>>[-]>[-]>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>[>>>>>[-< +<<<+>>>>]<<<<[->>>>+<<<+<]>>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>+++++++++++++++[ +[>>>>>>>>>]+>[-]>[-]>[-]>[-]>[-]>[-]>[-]>[-]>[-]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>-]+ +[>+>>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>[>->>>>[-<<<<+>>>>]<<<<[->>>>+<<<<<[->> +[-<<+>>]<<[->>+>+<<<]+>>>>>>>>>]<<<<<<<<[<<<<<<<<<]]>>>>>>>>>[>>>>>>>>>]<<<<<<<< +<[>[->>>>>>>>>+<<<<<<<<<]<<<<<<<<<<]>[->>>>>>>>>+<<<<<<<<<]<+>>>>>>>>]<<<<<<<<<[ +>[-]<->>>[-<<<+>[<->-<<<<<<<+>>>>>>>]<[->+<]>>>]<<[->>+<<]<+<<<<<<<<<]>>>>>>>>>[ +>>>[-<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<+>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>]> +>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>[-]>>>>+++++++++++++++[[>>>>>>>>>]<<<<<<<<<-<<<<< +<<<<[<<<<<<<<<]>>>>>>>>>-]+[>>>[-<<<->>>]+<<<[->>>->[-<<<<+>>>>]<<<<[->>>>+<<<<< +<<<<<<<<[<<<<<<<<<]>>>>[-]+>>>>>[>>>>>>>>>]>+<]]+>>>>[-<<<<->>>>]+<<<<[->>>>-<[- +<<<+>>>]<<<[->>>+<<<<<<<<<<<<[<<<<<<<<<]>>>[-]+>>>>>>[>>>>>>>>>]>[-]+<]]+>[-<[>> +>>>>>>>]<<<<<<<<]>>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>[-<<<+>>>]<<<[->>>+>>>>>>[>+>>> +[-<<<->>>]<<<[->>>+<<<]>>>>>>>>]<<<<<<<<+<[>[->+>[-<-<<<<<<<<<<+>>>>>>>>>>>>[-<< ++>>]<]>[-<<-<<<<<<<<<<+>>>>>>>>>>>>]<<<]>>[-<+>>[-<<-<<<<<<<<<<+>>>>>>>>>>>>]<]> 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+]<<<<<<<<<<<]>>>>>[-]>>[-<<<<<<<+>>>>>>>]<<<<<<<[->>>>>>>+<<+<<<<<]]>>>>[-<<<<+> +>>>]<<<<[->>>>+>>>>>[>+>>[-<<->>]<<[->>+<<]>>>>>>>>]<<<<<<<<+<[>[->>>>+<<<[->>>- +<<<<<<<<<<<<<+>>>>>>>>>>>[->>+<<]<]>[->>-<<<<<<<<<<<<<+>>>>>>>>>>>]<<]>[->>>+<<[ +->>-<<<<<<<<<<<<<+>>>>>>>>>>>]<]>[->>+<<]<<<<<<<<<<<<]]>>>>[-]<<<<]>>>>[-<<<<+>> +>>]<<<<[->>>>+>[-]>>[-<<<<<<<+>>>>>>>]<<<<<<<[->>>>>>>+<<+<<<<<]>>>>>>>>>[>>>>>> +>>>]<<<<<<<<<[>[->>>>+<<<[->>>-<<<<<<<<<<<<<+>>>>>>>>>>>[->>+<<]<]>[->>-<<<<<<<< +<<<<<+>>>>>>>>>>>]<<]>[->>>+<<[->>-<<<<<<<<<<<<<+>>>>>>>>>>>]<]>[->>+<<]<<<<<<<< +<<<<]]>>>>>>>>>[>>[-]>[-]>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>[-]>[-]>>>>>[>>>>>[-<<<<+ +>>>>]<<<<[->>>>+<<<+<]>>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>[>>>>>>[-<<<<<+>>>>> +]<<<<<[->>>>>+<<<+<<]>>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>+++++++++++++++[[>>>> +>>>>>]+>[-]>[-]>[-]>[-]>[-]>[-]>[-]>[-]>[-]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>-]+[>+>> +>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>[>->>>>[-<<<<+>>>>]<<<<[->>>>+<<<<<[->>[-<<+ +>>]<<[->>+>>+<<<<]+>>>>>>>>>]<<<<<<<<[<<<<<<<<<]]>>>>>>>>>[>>>>>>>>>]<<<<<<<<<[> +[->>>>>>>>>+<<<<<<<<<]<<<<<<<<<<]>[->>>>>>>>>+<<<<<<<<<]<+>>>>>>>>]<<<<<<<<<[>[- +]<->>>>[-<<<<+>[<->-<<<<<<+>>>>>>]<[->+<]>>>>]<<<[->>>+<<<]<+<<<<<<<<<]>>>>>>>>> +[>+>>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>[>->>>>>[-<<<<<+>>>>>]<<<<<[->>>>>+<<<< +<<[->>>[-<<<+>>>]<<<[->>>+>+<<<<]+>>>>>>>>>]<<<<<<<<[<<<<<<<<<]]>>>>>>>>>[>>>>>> +>>>]<<<<<<<<<[>>[->>>>>>>>>+<<<<<<<<<]<<<<<<<<<<<]>>[->>>>>>>>>+<<<<<<<<<]<<+>>> +>>>>>]<<<<<<<<<[>[-]<->>>>[-<<<<+>[<->-<<<<<<+>>>>>>]<[->+<]>>>>]<<<[->>>+<<<]<+ +<<<<<<<<<]>>>>>>>>>[>>>>[-<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<+>>>>>>>>>>>>>>>>> +>>>>>>>>>>>>>>>>>>>]>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>+++++++++++++++[[>>>>>>>> +>]<<<<<<<<<-<<<<<<<<<[<<<<<<<<<]>>>>>>>>>-]+>>>>>>>>>>>>>>>>>>>>>+<<<[<<<<<<<<<] +>>>>>>>>>[>>>[-<<<->>>]+<<<[->>>->[-<<<<+>>>>]<<<<[->>>>+<<<<<<<<<<<<<[<<<<<<<<< +]>>>>[-]+>>>>>[>>>>>>>>>]>+<]]+>>>>[-<<<<->>>>]+<<<<[->>>>-<[-<<<+>>>]<<<[->>>+< 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+>>>>>>>>[-<<<<<<<<+>[<->-<<+>>]<[->+<]>>>>>>>>]<<<<<<<[->>>>>>>+<<<<<<<]<+<<<<<< +<<<]>>>>>>>>-<<<<<[-]+<<<]+>>>>>>>>[-<<<<<<<<->>>>>>>>]+<<<<<<<<[->>>>>>>>->[>>> +>>>[->>+<<]>>>]<<<<<<<<<[>[-]<->>>>>>>>[-<<<<<<<<+>[<->-<<+>>]<[->+<]>>>>>>>>]<< +<<<<<[->>>>>>>+<<<<<<<]<+<<<<<<<<<]>+++++[-[->>>>>>>>>+<<<<<<<<<]>>>>>>>>>]>>>>> ++>>>>>>>>>>>>>>>>>>>>>>>>>>>+<<<<<<[<<<<<<<<<]>>>>>>>>>[>>>>>>[-<<<<<<->>>>>>]+< +<<<<<[->>>>>>->>[-<<<<<<<<+>>>>>>>>]<<<<<<<<[->>>>>>>>+<<<<<<<<<<<<<<<<<[<<<<<<< +<<]>>>>[-]+>>>>>[>>>>>>>>>]>+<]]+>>>>>>>>[-<<<<<<<<->>>>>>>>]+<<<<<<<<[->>>>>>>> +-<<[-<<<<<<+>>>>>>]<<<<<<[->>>>>>+<<<<<<<<<<<<<<<[<<<<<<<<<]>>>[-]+>>>>>>[>>>>>> +>>>]>[-]+<]]+>[-<[>>>>>>>>>]<<<<<<<<]>>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>[-]<<<++++ ++[-[->>>>>>>>>+<<<<<<<<<]>>>>>>>>>]>>>>>->>>>>>>>>>>>>>>>>>>>>>>>>>>-<<<<<<[<<<< +<<<<<]]>>>] diff --git a/meson.build b/meson.build new file mode 100644 index 0000000..c613b52 --- /dev/null +++ b/meson.build @@ -0,0 +1,4 @@ +project('brainfuck', 'c') +sources = [] +subdir('src') +executable('brainfuck', sources) diff --git a/src/bc.h b/src/bc.h new file mode 100644 index 0000000..32fffe0 --- /dev/null +++ b/src/bc.h @@ -0,0 +1,20 @@ +// SPDX-License-Identifier: GPL-3.0-only + +#ifndef BF_H +#define BF_H + +#define OP_END (0) +#define OP_MOV (1 << 0) +#define OP_ADD (1 << 1) +#define OP_BEQZ (1 << 2) +#define OP_BNEZ (1 << 3) +#define OP_CALL (1 << 4) +#define OP_MASK (0x3f) +#define OP_EXE (OP_MOV | OP_ADD) +#define OP_BR (OP_BEQZ | OP_BNEZ) + +#define FUNC_PUTC 0 +#define FUNC_GETC 1 +#define FUNC_DEBUG 2 + +#endif // BF_H diff --git a/src/e2k.S b/src/e2k.S new file mode 100644 index 0000000..8db7100 --- /dev/null +++ b/src/e2k.S @@ -0,0 +1,198 @@ +! SPDX-License-Identifier: GPL-3.0-only + +#include "bc.h" + +#define CODE %r0 +#define TAPE %r1 +#define TAPE_SIZE %r2 +#define PC %r3 +#define CUR %r4 +#define ACC %r5 + +! Pipeline registers +#define NPC_F %b[0] +#define NPC_D %b[2] +#define NPC_E %b[4] +#define INSN_F %b[1] +#define INSN_D %b[3] +#define INSN_E %b[5] +#define IMM_D %b[6] +#define IMM_E %b[8] +#define BRANCH_TARGET_D %b[7] +#define BRANCH_TARGET_E %b[9] + +! Pipeline predictes +#define IS_NOT_ADD_D %pred0 +#define IS_NOT_ADD_E %pred1 +#define IS_NOT_MOV_D %pred2 +#define IS_NOT_MOV_E %pred3 +#define IS_NOT_EXE_D %pred4 +#define IS_NOT_EXE_E %pred5 +#define IS_NOT_CALL_D %pred6 +#define IS_NOT_CALL_E %pred7 +#define IS_NOT_BEQZ_D %pred8 +#define IS_NOT_BEQZ_E %pred9 +#define IS_NOT_BNEZ_D %pred10 +#define IS_NOT_BNEZ_E %pred11 + +#define IS_NOT_BRANCH %pred27 +#define IS_ACC_ZERO %pred28 +#define IS_NOT_TAKEN %pred29 + +#define LOOP %ctpr1 +#define PIPELINE %ctpr2 +#define CALL %ctpr3 + + .text + .global run_program_e2k + .type run_program_e2k, #function + .balign 8 +run_program_e2k: + { + setwd wsz=12, nfx=1, dbl=1 + setbn rsz=7, rbs=4, rcur=0 + setbp psz=13 + nop 4 + addd,1 TAPE, 0, CUR + addd,2 0, 0, PC + ldb,3 TAPE, 0, ACC + disp PIPELINE, pipeline + } + ct PIPELINE + +call: + { + setwd wsz=8, nfx=1, dbl=1 + setbn rsz=3, rbs=4, rcur=0 + setbp psz=0 + cmpedb,0 IMM_E, FUNC_PUTC, %pred31 + cmpedb,1 IMM_E, FUNC_GETC, %pred30 +#ifdef FUNC_DEBUG + cmpedb,3 IMM_E, FUNC_DEBUG, %pred29 +#endif + disp %ctpr1, putchar + } + { + disp %ctpr2, getchar + } +#ifdef FUNC_DEBUG + { + nop 2 + disp %ctpr3, debug + } +#endif + { + addd,0 ACC, 0, %b[0] ? %pred31 + call %ctpr1, wbs=4 ? %pred31 + } + { + call %ctpr2, wbs=4 ? %pred30 + } +#ifdef FUNC_DEBUG + { + addd,0 CODE, 0, %b[0] ? %pred29 + subd,1 PC, 4, %b[1] ? %pred29 + addd,2 TAPE, 0, %b[2] ? %pred29 + addd,3 CUR, 0, %b[3] ? %pred29 + addd,4 ACC, 0, %b[4] ? %pred29 + call %ctpr3, wbs=4 ? %pred29 + } +#endif + { + setwd wsz=12, nfx=1, dbl=1 + setbn rsz=7, rbs=4, rcur=0 + setbp psz=13 + addd,0 %b[0], 0, ACC ? %pred30 + } + + ! Pipeline stages: + ! II0 - F - Fetch (latency 3) + ! II1 - D - Decode (latency 3) + ! II2 - E - Execute (latency 3-7) + ! TODO: branch prediction +pipeline: + { + addd,0 PC, 4, NPC_E + addd,1 PC, 8, NPC_D + ldw,2,sm CODE, PC, INSN_E + disp LOOP, loop + } + { + ldw,2,sm CODE, NPC_E, INSN_D + disp PIPELINE, pipeline + } + disp CALL, call + { + cmpandesb,0,sm INSN_E, OP_MOV, IS_NOT_MOV_E + cmpandesb,1,sm INSN_E, OP_BEQZ, IS_NOT_BEQZ_E + getfd,2,sm INSN_E, 0x7686, IMM_E + } + { + cmpandesb,0,sm INSN_E, OP_BNEZ, IS_NOT_BNEZ_E + cmpandesb,1,sm INSN_E, OP_ADD, IS_NOT_ADD_E + addd,2,sm NPC_E, IMM_E, BRANCH_TARGET_E + cmpandesb,3,sm INSN_E, OP_EXE, IS_NOT_EXE_E + cmpandesb,4,sm INSN_E, OP_CALL, IS_NOT_CALL_E + } + +loop: + { + ! Fetch + addd,0 NPC_D, 4, NPC_F + ldw,2,sm CODE, NPC_D, INSN_F + ! Decode + getfd,1,sm INSN_D, 0x7686, IMM_D + ! Execute + ldb,3 CUR, IMM_E, ACC ? ~IS_NOT_MOV_E + cmpedb,4 ACC, 0, IS_ACC_ZERO + stb,5 ACC, CUR, 0 ? ~IS_NOT_MOV_E + pass IS_NOT_BEQZ_E, @p0 + pass IS_NOT_BNEZ_E, @p1 + landp @p0, @p1, @p4 + pass @p4, IS_NOT_BRANCH + } + { + ! Decode + addd,0,sm NPC_D, IMM_D, BRANCH_TARGET_D + cmpandesb,1,sm INSN_D, OP_MOV, IS_NOT_MOV_D + cmpandesb,3,sm INSN_D, OP_BEQZ, IS_NOT_BEQZ_D + cmpandesb,4,sm INSN_D, OP_BNEZ, IS_NOT_BNEZ_D + ! Execute + addd,2 ACC, IMM_E, ACC ? ~IS_NOT_ADD_E + addd,5 CUR, IMM_E, CUR ? ~IS_NOT_MOV_E + pass IS_ACC_ZERO, @p0 + pass IS_NOT_BEQZ_E, @p1 + pass IS_NOT_BNEZ_E, @p2 + landp @p0, ~@p1, @p4 + landp ~@p0, ~@p2, @p5 + landp ~@p4, ~@p5, @p6 + pass @p6, IS_NOT_TAKEN + } + { + ! Decode + cmpandesb,1,sm INSN_D, OP_ADD, IS_NOT_ADD_D + cmpandesb,3,sm INSN_D, OP_EXE, IS_NOT_EXE_D + cmpandesb,4,sm INSN_D, OP_CALL, IS_NOT_CALL_D + + abn abnf=0, abnt=1 + abp abpf=0, abpt=1 + ct LOOP ? ~IS_NOT_EXE_E + } + { + ! Execute (extra): exit pipeline and call function + addd,1 NPC_E, 0, PC ? ~IS_NOT_CALL_E + ct CALL ? ~IS_NOT_CALL_E + } + { + ! Execute (extra): restart pipeline + addd,0 NPC_E, 0, PC ? IS_NOT_TAKEN + addd,1 BRANCH_TARGET_E, 0, PC ? ~IS_NOT_TAKEN + ct PIPELINE ? ~IS_NOT_BRANCH + } + { + nop 5 + return %ctpr3 + } + ct %ctpr3 + + .size run_program_e2k, . - run_program_e2k diff --git a/src/main.c b/src/main.c new file mode 100644 index 0000000..150496c --- /dev/null +++ b/src/main.c @@ -0,0 +1,388 @@ +// SPDX-License-Identifier: GPL-3.0-only + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "bc.h" + +#define TAPE_SIZE 30000 +#define MAX_NESTING 100 + +typedef enum Mode { + MODE_ASM, + MODE_BC, + MODE_NAIVE, +} Mode; + +typedef struct Options { + Mode mode; + bool dump; + bool dump_only; + bool time; + char **files; +} Options; + +static void printf_err(const char *fmt, ...) { + va_list ap; + va_start(ap, fmt); + vfprintf(stderr, fmt, ap); + va_end(ap); +} + +static bool parse_opts(int argc, char *argv[], Options *opts) { + bool ret = true; + + memset(opts, 0, sizeof(*opts)); + + for (;;) { + int option_index = 0; + static struct option long_options[] = { + {"mode", required_argument, 0, 'm'}, + {"dump", no_argument, 0, 'd'}, + {"dump-only", no_argument, 0, 'D'}, + {0, 0, 0, 0 } + }; + int c = getopt_long(argc, argv, "dDm:t", + long_options, &option_index); + if (c == -1) { + break; + } + + switch (c) { + case 0: + abort(); + case 'D': + opts->dump_only = true; + /* fallthrough */ + case 'd': + opts->dump = true; + break; + case 't': + opts->time = true; + break; + case 'm': + if (strcmp(optarg, "asm") == 0) { + opts->mode = MODE_ASM; + } else if (strcmp(optarg, "bc") == 0) { + opts->mode = MODE_BC; + } else if (strcmp(optarg, "naive") == 0) { + opts->mode = MODE_NAIVE; + } else { + printf_err("invalid mode \"%s\"\n", optarg); + ret = false; + } + break; + default: + ret = false; + break; + } + } + + if (optind < argc) { + opts->files = &argv[optind]; + } else { + printf_err("usage: %s program.bf\n", argv[0]); + ret = false; + } + + return ret; +} + +#ifdef __e2k__ +void run_program_e2k(const int32_t *code, uint8_t *tape, size_t tape_size); +#endif + +static inline int32_t make_insn(uint8_t op, int32_t n) { + return ((uint32_t) n << 6) | op; +} + +static inline int32_t insn_imm(int32_t insn) { + return insn >> 6; +} + +static size_t load_program(const char *path, char **program) { + FILE *f; + size_t size; + + if (!(f = fopen(path, "r"))) { + perror(path); + exit(EXIT_FAILURE); + } + + fseek(f, 0, SEEK_END); + size = ftell(f); + *program = (char *) malloc(size + 16); + fseek(f, 0, SEEK_SET); + size_t n = fread(*program, 1, size, f); + (*program)[n] = 0; + fclose(f); + + return size; +} + +static int32_t* translate_program(char *p, size_t size) { + int32_t loops[MAX_NESTING]; + int32_t *o; + int32_t l, i = 0, nloops = 0; + + o = malloc(size * sizeof(o[0])); + + while (*p) { + int32_t n = 0; + char c_inc = *p, c_dec; + int op; + + switch (c_inc) { + case '[': + loops[nloops++] = i++; + ++p; + break; + case ']': + l = loops[--nloops]; + o[l] = make_insn(OP_BEQZ, (i - l) * 4); + o[i] = make_insn(OP_BNEZ, (l - i) * 4); + ++i; + ++p; + break; + case '-': + c_inc = '+'; + /* fallthrough */ + case '+': + c_dec = '-'; + op = OP_ADD; + goto count_dec_inc; + case '<': + c_inc = '>'; + /* fallthrough */ + case '>': + c_dec = '<'; + op = OP_MOV; + count_dec_inc: + while (*p == c_inc || *p == c_dec) { + n += *p++ == c_inc ? 1 : -1; + } + if (n != 0) { + o[i++] = make_insn(op, n); + } + break; + case ',': + o[i++] = make_insn(OP_CALL, FUNC_GETC); + ++p; + break; + case '.': + o[i++] = make_insn(OP_CALL, FUNC_PUTC); + ++p; + break; +#ifdef FUNC_DEBUG + case '?': + o[i++] = make_insn(OP_CALL, FUNC_DEBUG); + ++p; + break; +#endif + default: + ++p; + break; + } + } + + o[i] = OP_END; + return o; +} + +static void dump_program(const char *path, const int32_t *code) { + uint32_t pc = 0; + + printf_err(" Bytecode:\n"); + for (; code[pc]; ++pc) { + int32_t n = insn_imm(code[pc]); + + printf_err(" %4u: ", pc); + switch (code[pc] & OP_MASK) { + case OP_BEQZ: + printf_err("[%d", pc + n / 4 + 1); + break; + case OP_BNEZ: + printf_err("]%d", pc + n / 4 + 1); + break; + case OP_ADD: + printf_err("%c%d", n > 0 ? '+' : '-', abs(n)); + break; + case OP_MOV: + printf_err("%c%d", n > 0 ? '>' : '<', abs(n)); + break; + case OP_CALL: + switch (n) { + case FUNC_GETC: printf_err(","); break; + case FUNC_PUTC: printf_err("."); break; +#ifdef FUNC_DEBUG + case FUNC_DEBUG: printf_err("?"); break; +#endif + default: abort(); + } + break; + default: + abort(); + break; + } + printf_err("\n"); + } + printf_err("\n"); +} + +static void run_program_bc(const int32_t *code, uint8_t *tape, size_t tape_size) { + uint32_t pc = 0, i = 0; + uint8_t cur = tape[i]; + + for (; code[pc]; ++pc) { + int32_t n = insn_imm(code[pc]); + + switch (code[pc] & OP_MASK) { + case OP_BEQZ: + if (cur == 0) { + pc += n / 4; + } + break; + case OP_BNEZ: + if (cur != 0) { + pc += n / 4; + } + break; + case OP_ADD: + cur += n; + break; + case OP_MOV: + tape[i] = cur; + i += n; + cur = tape[i]; + break; + case OP_CALL: + switch (n) { + case FUNC_GETC: + cur = getchar(); + break; + case FUNC_PUTC: + putchar(cur); + break; +#ifdef FUNC_DEBUG + case FUNC_DEBUG: + break; +#endif + default: + abort(); + } + break; + default: + abort(); + break; + } + } +} + +static void run_program_naive(const char *program, uint8_t *tape, size_t tape_size) { + // TODO: +} + +int main(int argc, char *argv[], char *envp[]) { + Options opts = { 0 }; + uint8_t tape[TAPE_SIZE]; + + if (!parse_opts(argc, argv, &opts)) { + exit(EXIT_FAILURE); + } + + for (int i = 0; opts.files[i]; ++i) { + char *path = opts.files[i]; + char *program = NULL; + int32_t *code = NULL; + size_t size; + + if (opts.dump || opts.time) { + printf_err("%s\n", path); + } + + size = load_program(path, &program); + switch (opts.mode) { + case MODE_ASM: + case MODE_BC: + code = translate_program(program, size); + if (opts.dump) { + dump_program(path, code); + } + break; + default: + if (opts.dump) { + printf_err("%s\n", program); + } + break; + } + + if (!opts.dump_only) { + struct timespec start; + + memset(tape, 0, TAPE_SIZE); + + if (opts.time) { + clock_gettime(CLOCK_MONOTONIC, &start); + } + + switch (opts.mode) { + case MODE_ASM: + case MODE_BC: +#if __e2k__ + if (opts.mode == MODE_ASM) { + run_program_e2k(code, tape, TAPE_SIZE); + } else +#endif + { + run_program_bc(code, tape, TAPE_SIZE); + } + break; + case MODE_NAIVE: + run_program_naive(program, tape, TAPE_SIZE); + break; + } + + if (opts.time) { + struct timespec end; + double time; + const char *units; + + clock_gettime(CLOCK_MONOTONIC, &end); + time = (unsigned long long) (end.tv_sec - start.tv_sec) * 1000000000ULL + + (end.tv_nsec - start.tv_nsec); + if (time > 9000.0e6) { + time /= 1e9; + units = "s"; + } else { + time /= 1e6; + units = "ms"; + } + + printf_err(" Time: %.2f%s\n", time, units); + } + } + + if (opts.dump || opts.time) { + printf_err("\n"); + } + + free(code); + free(program); + } + + return EXIT_SUCCESS; +} + +#ifdef FUNC_DEBUG +void debug(const int32_t *code, uint64_t pc, const uint8_t *tape, + const uint8_t *cur, uint64_t acc) +{ + printf_err(" %4lu: acc=%lu, i=%lu\n", pc / 4, acc, (intptr_t) cur - (intptr_t) tape); +} +#endif diff --git a/src/meson.build b/src/meson.build new file mode 100644 index 0000000..84f55db --- /dev/null +++ b/src/meson.build @@ -0,0 +1,5 @@ +sources += files('main.c') + +if target_machine.cpu() == 'e2k' +sources += files('e2k.S') +endif