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e2k-linux.txt Normal file
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@ -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'

1
examples/hello.bf Normal file
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@ -0,0 +1 @@
++++++++[>++++[>++>+++>+++>+<<<<-]>+>+>->>+[<]<-]>>.>---.+++++++..+++.>>.<-.<.+++.------.--------.>>+.>++.

145
examples/mandelbrot.bf Normal file
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@ -0,0 +1,145 @@
A mandelbrot set fractal viewer in brainfuck written by Erik Bosman
+++++++++++++[->++>>>+++++>++>+<<<<<<]>>>>>++++++>--->>>>>>>>>>+++++++++++++++[[
>>>>>>>>>]+[<<<<<<<<<]>>>>>>>>>-]+[>>>>>>>>[-]>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>[-]+
<<<<<<<+++++[-[->>>>>>>>>+<<<<<<<<<]>>>>>>>>>]>>>>>>>+>>>>>>>>>>>>>>>>>>>>>>>>>>
>+<<<<<<<<<<<<<<<<<[<<<<<<<<<]>>>[-]+[>>>>>>[>>>>>>>[-]>>]<<<<<<<<<[<<<<<<<<<]>>
>>>>>[-]+<<<<<<++++[-[->>>>>>>>>+<<<<<<<<<]>>>>>>>>>]>>>>>>+<<<<<<+++++++[-[->>>
>>>>>>+<<<<<<<<<]>>>>>>>>>]>>>>>>+<<<<<<<<<<<<<<<<[<<<<<<<<<]>>>[[-]>>>>>>[>>>>>
>>[-<<<<<<+>>>>>>]<<<<<<[->>>>>>+<<+<<<+<]>>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>
[>>>>>>>>[-<<<<<<<+>>>>>>>]<<<<<<<[->>>>>>>+<<+<<<+<<]>>>>>>>>]<<<<<<<<<[<<<<<<<
<<]>>>>>>>[-<<<<<<<+>>>>>>>]<<<<<<<[->>>>>>>+<<+<<<<<]>>>>>>>>>+++++++++++++++[[
>>>>>>>>>]+>[-]>[-]>[-]>[-]>[-]>[-]>[-]>[-]>[-]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>-]+[
>+>>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>[>->>>>[-<<<<+>>>>]<<<<[->>>>+<<<<<[->>[
-<<+>>]<<[->>+>>+<<<<]+>>>>>>>>>]<<<<<<<<[<<<<<<<<<]]>>>>>>>>>[>>>>>>>>>]<<<<<<<
<<[>[->>>>>>>>>+<<<<<<<<<]<<<<<<<<<<]>[->>>>>>>>>+<<<<<<<<<]<+>>>>>>>>]<<<<<<<<<
[>[-]<->>>>[-<<<<+>[<->-<<<<<<+>>>>>>]<[->+<]>>>>]<<<[->>>+<<<]<+<<<<<<<<<]>>>>>
>>>>[>+>>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>[>->>>>>[-<<<<<+>>>>>]<<<<<[->>>>>+
<<<<<<[->>>[-<<<+>>>]<<<[->>>+>+<<<<]+>>>>>>>>>]<<<<<<<<[<<<<<<<<<]]>>>>>>>>>[>>
>>>>>>>]<<<<<<<<<[>>[->>>>>>>>>+<<<<<<<<<]<<<<<<<<<<<]>>[->>>>>>>>>+<<<<<<<<<]<<
+>>>>>>>>]<<<<<<<<<[>[-]<->>>>[-<<<<+>[<->-<<<<<<+>>>>>>]<[->+<]>>>>]<<<[->>>+<<
<]<+<<<<<<<<<]>>>>>>>>>[>>>>[-<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<+>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>>>]>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>+++++++++++++++[[>>>>
>>>>>]<<<<<<<<<-<<<<<<<<<[<<<<<<<<<]>>>>>>>>>-]+>>>>>>>>>>>>>>>>>>>>>+<<<[<<<<<<
<<<]>>>>>>>>>[>>>[-<<<->>>]+<<<[->>>->[-<<<<+>>>>]<<<<[->>>>+<<<<<<<<<<<<<[<<<<<
<<<<]>>>>[-]+>>>>>[>>>>>>>>>]>+<]]+>>>>[-<<<<->>>>]+<<<<[->>>>-<[-<<<+>>>]<<<[->
>>+<<<<<<<<<<<<[<<<<<<<<<]>>>[-]+>>>>>>[>>>>>>>>>]>[-]+<]]+>[-<[>>>>>>>>>]<<<<<<
<<]>>>>>>>>]<<<<<<<<<[<<<<<<<<<]<<<<<<<[->+>>>-<<<<]>>>>>>>>>+++++++++++++++++++
+++++++>>[-<<<<+>>>>]<<<<[->>>>+<<[-]<<]>>[<<<<<<<+<[-<+>>>>+<<[-]]>[-<<[->+>>>-
<<<<]>>>]>>>>>>>>>>>>>[>>[-]>[-]>[-]>>>>>]<<<<<<<<<[<<<<<<<<<]>>>[-]>>>>>>[>>>>>
[-<<<<+>>>>]<<<<[->>>>+<<<+<]>>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>[>>[-<<<<<<<<
<+>>>>>>>>>]>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>+++++++++++++++[[>>>>>>>>>]+>[-
]>[-]>[-]>[-]>[-]>[-]>[-]>[-]>[-]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>-]+[>+>>>>>>>>]<<<
<<<<<<[<<<<<<<<<]>>>>>>>>>[>->>>>>[-<<<<<+>>>>>]<<<<<[->>>>>+<<<<<<[->>[-<<+>>]<
<[->>+>+<<<]+>>>>>>>>>]<<<<<<<<[<<<<<<<<<]]>>>>>>>>>[>>>>>>>>>]<<<<<<<<<[>[->>>>
>>>>>+<<<<<<<<<]<<<<<<<<<<]>[->>>>>>>>>+<<<<<<<<<]<+>>>>>>>>]<<<<<<<<<[>[-]<->>>
[-<<<+>[<->-<<<<<<<+>>>>>>>]<[->+<]>>>]<<[->>+<<]<+<<<<<<<<<]>>>>>>>>>[>>>>>>[-<
<<<<+>>>>>]<<<<<[->>>>>+<<<<+<]>>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>[>+>>>>>>>>
]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>[>->>>>>[-<<<<<+>>>>>]<<<<<[->>>>>+<<<<<<[->>[-<<+
>>]<<[->>+>>+<<<<]+>>>>>>>>>]<<<<<<<<[<<<<<<<<<]]>>>>>>>>>[>>>>>>>>>]<<<<<<<<<[>
[->>>>>>>>>+<<<<<<<<<]<<<<<<<<<<]>[->>>>>>>>>+<<<<<<<<<]<+>>>>>>>>]<<<<<<<<<[>[-
]<->>>>[-<<<<+>[<->-<<<<<<+>>>>>>]<[->+<]>>>>]<<<[->>>+<<<]<+<<<<<<<<<]>>>>>>>>>
[>>>>[-<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<+>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
]>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>[>>>[-<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<+>
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>]>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>++++++++
+++++++[[>>>>>>>>>]<<<<<<<<<-<<<<<<<<<[<<<<<<<<<]>>>>>>>>>-]+[>>>>>>>>[-<<<<<<<+
>>>>>>>]<<<<<<<[->>>>>>>+<<<<<<+<]>>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>[>>>>>>[
-]>>>]<<<<<<<<<[<<<<<<<<<]>>>>+>[-<-<<<<+>>>>>]>[-<<<<<<[->>>>>+<++<<<<]>>>>>[-<
<<<<+>>>>>]<->+>]<[->+<]<<<<<[->>>>>+<<<<<]>>>>>>[-]<<<<<<+>>>>[-<<<<->>>>]+<<<<
[->>>>->>>>>[>>[-<<->>]+<<[->>->[-<<<+>>>]<<<[->>>+<<<<<<<<<<<<[<<<<<<<<<]>>>[-]
+>>>>>>[>>>>>>>>>]>+<]]+>>>[-<<<->>>]+<<<[->>>-<[-<<+>>]<<[->>+<<<<<<<<<<<[<<<<<
<<<<]>>>>[-]+>>>>>[>>>>>>>>>]>[-]+<]]+>[-<[>>>>>>>>>]<<<<<<<<]>>>>>>>>]<<<<<<<<<
[<<<<<<<<<]>>>>[-<<<<+>>>>]<<<<[->>>>+>>>>>[>+>>[-<<->>]<<[->>+<<]>>>>>>>>]<<<<<
<<<+<[>[->>>>>+<<<<[->>>>-<<<<<<<<<<<<<<+>>>>>>>>>>>[->>>+<<<]<]>[->>>-<<<<<<<<<
<<<<<+>>>>>>>>>>>]<<]>[->>>>+<<<[->>>-<<<<<<<<<<<<<<+>>>>>>>>>>>]<]>[->>>+<<<]<<
<<<<<<<<<<]>>>>[-]<<<<]>>>[-<<<+>>>]<<<[->>>+>>>>>>[>+>[-<->]<[->+<]>>>>>>>>]<<<
<<<<<+<[>[->>>>>+<<<[->>>-<<<<<<<<<<<<<<+>>>>>>>>>>[->>>>+<<<<]>]<[->>>>-<<<<<<<
<<<<<<<+>>>>>>>>>>]<]>>[->>>+<<<<[->>>>-<<<<<<<<<<<<<<+>>>>>>>>>>]>]<[->>>>+<<<<
]<<<<<<<<<<<]>>>>>>+<<<<<<]]>>>>[-<<<<+>>>>]<<<<[->>>>+>>>>>[>>>>>>>>>]<<<<<<<<<
[>[->>>>>+<<<<[->>>>-<<<<<<<<<<<<<<+>>>>>>>>>>>[->>>+<<<]<]>[->>>-<<<<<<<<<<<<<<
+>>>>>>>>>>>]<<]>[->>>>+<<<[->>>-<<<<<<<<<<<<<<+>>>>>>>>>>>]<]>[->>>+<<<]<<<<<<<
<<<<<]]>[-]>>[-]>[-]>>>>>[>>[-]>[-]>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>[>>>>>[-<
<<<+>>>>]<<<<[->>>>+<<<+<]>>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>+++++++++++++++[
[>>>>>>>>>]+>[-]>[-]>[-]>[-]>[-]>[-]>[-]>[-]>[-]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>-]+
[>+>>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>[>->>>>[-<<<<+>>>>]<<<<[->>>>+<<<<<[->>
[-<<+>>]<<[->>+>+<<<]+>>>>>>>>>]<<<<<<<<[<<<<<<<<<]]>>>>>>>>>[>>>>>>>>>]<<<<<<<<
<[>[->>>>>>>>>+<<<<<<<<<]<<<<<<<<<<]>[->>>>>>>>>+<<<<<<<<<]<+>>>>>>>>]<<<<<<<<<[
>[-]<->>>[-<<<+>[<->-<<<<<<<+>>>>>>>]<[->+<]>>>]<<[->>+<<]<+<<<<<<<<<]>>>>>>>>>[
>>>[-<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<+>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>]>
>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>[-]>>>>+++++++++++++++[[>>>>>>>>>]<<<<<<<<<-<<<<<
<<<<[<<<<<<<<<]>>>>>>>>>-]+[>>>[-<<<->>>]+<<<[->>>->[-<<<<+>>>>]<<<<[->>>>+<<<<<
<<<<<<<<[<<<<<<<<<]>>>>[-]+>>>>>[>>>>>>>>>]>+<]]+>>>>[-<<<<->>>>]+<<<<[->>>>-<[-
<<<+>>>]<<<[->>>+<<<<<<<<<<<<[<<<<<<<<<]>>>[-]+>>>>>>[>>>>>>>>>]>[-]+<]]+>[-<[>>
>>>>>>>]<<<<<<<<]>>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>[-<<<+>>>]<<<[->>>+>>>>>>[>+>>>
[-<<<->>>]<<<[->>>+<<<]>>>>>>>>]<<<<<<<<+<[>[->+>[-<-<<<<<<<<<<+>>>>>>>>>>>>[-<<
+>>]<]>[-<<-<<<<<<<<<<+>>>>>>>>>>>>]<<<]>>[-<+>>[-<<-<<<<<<<<<<+>>>>>>>>>>>>]<]>
[-<<+>>]<<<<<<<<<<<<<]]>>>>[-<<<<+>>>>]<<<<[->>>>+>>>>>[>+>>[-<<->>]<<[->>+<<]>>
>>>>>>]<<<<<<<<+<[>[->+>>[-<<-<<<<<<<<<<+>>>>>>>>>>>[-<+>]>]<[-<-<<<<<<<<<<+>>>>
>>>>>>>]<<]>>>[-<<+>[-<-<<<<<<<<<<+>>>>>>>>>>>]>]<[-<+>]<<<<<<<<<<<<]>>>>>+<<<<<
]>>>>>>>>>[>>>[-]>[-]>[-]>>>>]<<<<<<<<<[<<<<<<<<<]>>>[-]>[-]>>>>>[>>>>>>>[-<<<<<
<+>>>>>>]<<<<<<[->>>>>>+<<<<+<<]>>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>+>[-<-<<<<+>>>>
>]>>[-<<<<<<<[->>>>>+<++<<<<]>>>>>[-<<<<<+>>>>>]<->+>>]<<[->>+<<]<<<<<[->>>>>+<<
<<<]+>>>>[-<<<<->>>>]+<<<<[->>>>->>>>>[>>>[-<<<->>>]+<<<[->>>-<[-<<+>>]<<[->>+<<
<<<<<<<<<[<<<<<<<<<]>>>>[-]+>>>>>[>>>>>>>>>]>+<]]+>>[-<<->>]+<<[->>->[-<<<+>>>]<
<<[->>>+<<<<<<<<<<<<[<<<<<<<<<]>>>[-]+>>>>>>[>>>>>>>>>]>[-]+<]]+>[-<[>>>>>>>>>]<
<<<<<<<]>>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>[-<<<+>>>]<<<[->>>+>>>>>>[>+>[-<->]<[->+
<]>>>>>>>>]<<<<<<<<+<[>[->>>>+<<[->>-<<<<<<<<<<<<<+>>>>>>>>>>[->>>+<<<]>]<[->>>-
<<<<<<<<<<<<<+>>>>>>>>>>]<]>>[->>+<<<[->>>-<<<<<<<<<<<<<+>>>>>>>>>>]>]<[->>>+<<<
]<<<<<<<<<<<]>>>>>[-]>>[-<<<<<<<+>>>>>>>]<<<<<<<[->>>>>>>+<<+<<<<<]]>>>>[-<<<<+>
>>>]<<<<[->>>>+>>>>>[>+>>[-<<->>]<<[->>+<<]>>>>>>>>]<<<<<<<<+<[>[->>>>+<<<[->>>-
<<<<<<<<<<<<<+>>>>>>>>>>>[->>+<<]<]>[->>-<<<<<<<<<<<<<+>>>>>>>>>>>]<<]>[->>>+<<[
->>-<<<<<<<<<<<<<+>>>>>>>>>>>]<]>[->>+<<]<<<<<<<<<<<<]]>>>>[-]<<<<]>>>>[-<<<<+>>
>>]<<<<[->>>>+>[-]>>[-<<<<<<<+>>>>>>>]<<<<<<<[->>>>>>>+<<+<<<<<]>>>>>>>>>[>>>>>>
>>>]<<<<<<<<<[>[->>>>+<<<[->>>-<<<<<<<<<<<<<+>>>>>>>>>>>[->>+<<]<]>[->>-<<<<<<<<
<<<<<+>>>>>>>>>>>]<<]>[->>>+<<[->>-<<<<<<<<<<<<<+>>>>>>>>>>>]<]>[->>+<<]<<<<<<<<
<<<<]]>>>>>>>>>[>>[-]>[-]>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>[-]>[-]>>>>>[>>>>>[-<<<<+
>>>>]<<<<[->>>>+<<<+<]>>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>[>>>>>>[-<<<<<+>>>>>
]<<<<<[->>>>>+<<<+<<]>>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>+++++++++++++++[[>>>>
>>>>>]+>[-]>[-]>[-]>[-]>[-]>[-]>[-]>[-]>[-]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>-]+[>+>>
>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>[>->>>>[-<<<<+>>>>]<<<<[->>>>+<<<<<[->>[-<<+
>>]<<[->>+>>+<<<<]+>>>>>>>>>]<<<<<<<<[<<<<<<<<<]]>>>>>>>>>[>>>>>>>>>]<<<<<<<<<[>
[->>>>>>>>>+<<<<<<<<<]<<<<<<<<<<]>[->>>>>>>>>+<<<<<<<<<]<+>>>>>>>>]<<<<<<<<<[>[-
]<->>>>[-<<<<+>[<->-<<<<<<+>>>>>>]<[->+<]>>>>]<<<[->>>+<<<]<+<<<<<<<<<]>>>>>>>>>
[>+>>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>[>->>>>>[-<<<<<+>>>>>]<<<<<[->>>>>+<<<<
<<[->>>[-<<<+>>>]<<<[->>>+>+<<<<]+>>>>>>>>>]<<<<<<<<[<<<<<<<<<]]>>>>>>>>>[>>>>>>
>>>]<<<<<<<<<[>>[->>>>>>>>>+<<<<<<<<<]<<<<<<<<<<<]>>[->>>>>>>>>+<<<<<<<<<]<<+>>>
>>>>>]<<<<<<<<<[>[-]<->>>>[-<<<<+>[<->-<<<<<<+>>>>>>]<[->+<]>>>>]<<<[->>>+<<<]<+
<<<<<<<<<]>>>>>>>>>[>>>>[-<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<+>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>]>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>+++++++++++++++[[>>>>>>>>
>]<<<<<<<<<-<<<<<<<<<[<<<<<<<<<]>>>>>>>>>-]+>>>>>>>>>>>>>>>>>>>>>+<<<[<<<<<<<<<]
>>>>>>>>>[>>>[-<<<->>>]+<<<[->>>->[-<<<<+>>>>]<<<<[->>>>+<<<<<<<<<<<<<[<<<<<<<<<
]>>>>[-]+>>>>>[>>>>>>>>>]>+<]]+>>>>[-<<<<->>>>]+<<<<[->>>>-<[-<<<+>>>]<<<[->>>+<
<<<<<<<<<<<[<<<<<<<<<]>>>[-]+>>>>>>[>>>>>>>>>]>[-]+<]]+>[-<[>>>>>>>>>]<<<<<<<<]>
>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>->>[-<<<<+>>>>]<<<<[->>>>+<<[-]<<]>>]<<+>>>>[-<<<<
->>>>]+<<<<[->>>>-<<<<<<.>>]>>>>[-<<<<<<<.>>>>>>>]<<<[-]>[-]>[-]>[-]>[-]>[-]>>>[
>[-]>[-]>[-]>[-]>[-]>[-]>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>[>>>>>[-]>>>>]<<<<<<<<<
[<<<<<<<<<]>+++++++++++[-[->>>>>>>>>+<<<<<<<<<]>>>>>>>>>]>>>>+>>>>>>>>>+<<<<<<<<
<<<<<<[<<<<<<<<<]>>>>>>>[-<<<<<<<+>>>>>>>]<<<<<<<[->>>>>>>+[-]>>[>>>>>>>>>]<<<<<
<<<<[>>>>>>>[-<<<<<<+>>>>>>]<<<<<<[->>>>>>+<<<<<<<[<<<<<<<<<]>>>>>>>[-]+>>>]<<<<
<<<<<<]]>>>>>>>[-<<<<<<<+>>>>>>>]<<<<<<<[->>>>>>>+>>[>+>>>>[-<<<<->>>>]<<<<[->>>
>+<<<<]>>>>>>>>]<<+<<<<<<<[>>>>>[->>+<<]<<<<<<<<<<<<<<]>>>>>>>>>[>>>>>>>>>]<<<<<
<<<<[>[-]<->>>>>>>[-<<<<<<<+>[<->-<<<+>>>]<[->+<]>>>>>>>]<<<<<<[->>>>>>+<<<<<<]<
+<<<<<<<<<]>>>>>>>-<<<<[-]+<<<]+>>>>>>>[-<<<<<<<->>>>>>>]+<<<<<<<[->>>>>>>->>[>>
>>>[->>+<<]>>>>]<<<<<<<<<[>[-]<->>>>>>>[-<<<<<<<+>[<->-<<<+>>>]<[->+<]>>>>>>>]<<
<<<<[->>>>>>+<<<<<<]<+<<<<<<<<<]>+++++[-[->>>>>>>>>+<<<<<<<<<]>>>>>>>>>]>>>>+<<<
<<[<<<<<<<<<]>>>>>>>>>[>>>>>[-<<<<<->>>>>]+<<<<<[->>>>>->>[-<<<<<<<+>>>>>>>]<<<<
<<<[->>>>>>>+<<<<<<<<<<<<<<<<[<<<<<<<<<]>>>>[-]+>>>>>[>>>>>>>>>]>+<]]+>>>>>>>[-<
<<<<<<->>>>>>>]+<<<<<<<[->>>>>>>-<<[-<<<<<+>>>>>]<<<<<[->>>>>+<<<<<<<<<<<<<<[<<<
<<<<<<]>>>[-]+>>>>>>[>>>>>>>>>]>[-]+<]]+>[-<[>>>>>>>>>]<<<<<<<<]>>>>>>>>]<<<<<<<
<<[<<<<<<<<<]>>>>[-]<<<+++++[-[->>>>>>>>>+<<<<<<<<<]>>>>>>>>>]>>>>-<<<<<[<<<<<<<
<<]]>>>]<<<<.>>>>>>>>>>[>>>>>>[-]>>>]<<<<<<<<<[<<<<<<<<<]>++++++++++[-[->>>>>>>>
>+<<<<<<<<<]>>>>>>>>>]>>>>>+>>>>>>>>>+<<<<<<<<<<<<<<<[<<<<<<<<<]>>>>>>>>[-<<<<<<
<<+>>>>>>>>]<<<<<<<<[->>>>>>>>+[-]>[>>>>>>>>>]<<<<<<<<<[>>>>>>>>[-<<<<<<<+>>>>>>
>]<<<<<<<[->>>>>>>+<<<<<<<<[<<<<<<<<<]>>>>>>>>[-]+>>]<<<<<<<<<<]]>>>>>>>>[-<<<<<
<<<+>>>>>>>>]<<<<<<<<[->>>>>>>>+>[>+>>>>>[-<<<<<->>>>>]<<<<<[->>>>>+<<<<<]>>>>>>
>>]<+<<<<<<<<[>>>>>>[->>+<<]<<<<<<<<<<<<<<<]>>>>>>>>>[>>>>>>>>>]<<<<<<<<<[>[-]<-
>>>>>>>>[-<<<<<<<<+>[<->-<<+>>]<[->+<]>>>>>>>>]<<<<<<<[->>>>>>>+<<<<<<<]<+<<<<<<
<<<]>>>>>>>>-<<<<<[-]+<<<]+>>>>>>>>[-<<<<<<<<->>>>>>>>]+<<<<<<<<[->>>>>>>>->[>>>
>>>[->>+<<]>>>]<<<<<<<<<[>[-]<->>>>>>>>[-<<<<<<<<+>[<->-<<+>>]<[->+<]>>>>>>>>]<<
<<<<<[->>>>>>>+<<<<<<<]<+<<<<<<<<<]>+++++[-[->>>>>>>>>+<<<<<<<<<]>>>>>>>>>]>>>>>
+>>>>>>>>>>>>>>>>>>>>>>>>>>>+<<<<<<[<<<<<<<<<]>>>>>>>>>[>>>>>>[-<<<<<<->>>>>>]+<
<<<<<[->>>>>>->>[-<<<<<<<<+>>>>>>>>]<<<<<<<<[->>>>>>>>+<<<<<<<<<<<<<<<<<[<<<<<<<
<<]>>>>[-]+>>>>>[>>>>>>>>>]>+<]]+>>>>>>>>[-<<<<<<<<->>>>>>>>]+<<<<<<<<[->>>>>>>>
-<<[-<<<<<<+>>>>>>]<<<<<<[->>>>>>+<<<<<<<<<<<<<<<[<<<<<<<<<]>>>[-]+>>>>>>[>>>>>>
>>>]>[-]+<]]+>[-<[>>>>>>>>>]<<<<<<<<]>>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>[-]<<<++++
+[-[->>>>>>>>>+<<<<<<<<<]>>>>>>>>>]>>>>>->>>>>>>>>>>>>>>>>>>>>>>>>>>-<<<<<<[<<<<
<<<<<]]>>>]

4
meson.build Normal file
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project('brainfuck', 'c')
sources = []
subdir('src')
executable('brainfuck', sources)

20
src/bc.h Normal file
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// 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

198
src/e2k.S Normal file
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! 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

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// SPDX-License-Identifier: GPL-3.0-only
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <stdbool.h>
#include <stdarg.h>
#include <unistd.h>
#include <getopt.h>
#include <time.h>
#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

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src/meson.build Normal file
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sources += files('main.c')
if target_machine.cpu() == 'e2k'
sources += files('e2k.S')
endif