Matt Godbolt mattgodbolt
mattgodbolt
/ gist:4d85a24b2e3a7733750d5513957444d6
Last active
October 26, 2021 13:48
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| P%=&2000 | |
| FORN%=0TO2STEP2:[OPT N% | |
| LDY #&10 | |
| LDX #0 | |
| LDA #0 | |
| .lp | |
| STA &3000, X | |
| INX | |
| BNE lp | |
| INC lp + 2 |
mattgodbolt
/ results.txt
Created
January 30, 2016 22:09
Results of static branch prediction attempts
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| model name : Intel(R) Core(TM) i5 CPU M 520 @ 2.40GHz | |
| c.f. https://github.com/mattgodbolt/agner | |
| ****************************************************************************** | |
| Ahead not taken | |
| ****************************************************************************** | |
| Processor 0 | |
| Clock Core cyc Instruct BrTaken BrMispred | |
| 548996 517178 1501711 0 3 | |
| 500608 500606 1501707 0 2 |
mattgodbolt
/ NUCLEAR.BAS
Last active
October 22, 2019 18:16
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| CLS | |
| PRINT "**********************************" | |
| PRINT "**********************************" | |
| PRINT "** PLEASE ENTER THE NUCLEAR KEY **" | |
| PRINT "**********************************" | |
| PRINT "**********************************" | |
| REPEAT | |
| PRINT "Key "; | |
| INPUT A$ | |
| PRINT "SORRY WRONG KEY!!!" |
mattgodbolt
/ brk.bas
Created
September 11, 2019 18:48
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| DIM b% 32 | |
| P% = b% | |
| [OPT2 | |
| BRK | |
| EQUB 42 | |
| EQUS "StackExchange" | |
| EQUB 0 | |
| ] | |
| CALL b% |
mattgodbolt
/ strace.log
Created
September 4, 2019 03:44
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| [pid 2066] openat(AT_FDCWD, "/opt", O_RDONLY|O_CLOEXEC|O_PATH|O_DIRECTORY) = 4 | |
| [pid 2066] name_to_handle_at(4, "wine-stable", {handle_bytes=128 => 8, handle_type=1, f_handle=0xab090400d0e41824}, [550], 0) = 0 | |
| [pid 2066] name_to_handle_at(4, "", {handle_bytes=128 => 144}, 0x7ffd319e2e54, AT_EMPTY_PATH) = -1 EOVERFLOW (Value too large for defined data type) | |
| [pid 2066] name_to_handle_at(4, "", {handle_bytes=144}, 0x7ffd319e2e54, AT_EMPTY_PATH) = -1 EINVAL (Invalid argument) |
mattgodbolt
/ gist:d83c771cf1775258b46c81ed78ac057f
Created
September 4, 2019 03:21
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| utils = require('utils'); | |
| hw = utils.hexword; | |
| hb = utils.hexbyte; | |
| every = 0; | |
| function spew(pc) { | |
| console.log(`${processor.currentCycles} $${hw(pc)} A=${hb(processor.a)} X=${hb(processor.x)} Y=${hb(processor.y)}`); | |
| // breakpoint every 100 instructions lest things go awry. | |
| return ((++every % 100) === 0); | |
| } |
mattgodbolt
/ render.asm
Created
August 22, 2019 22:20
A bit of Red Dog: Superior Firepower's rendering system. SH4 Assembly, circa 1998
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| ; All new, all-singing, all-dancing textured scape renderer! | |
| .CPU SH4 | |
| .OUTPUT DBG=DWARF | |
| .INCLUDE "..\RedDog.pre" | |
| ; Prototype: StripHeader *texturedStripRasteriserClipped | |
| ; (StripPos *v, StripEntry *strip, Uint32 nStrip, ModelContext *context); | |
| ; Register allocation: | |
| temp: .REG R0 ; temporary register, R0 is most accessible |
mattgodbolt
/ gist:bf99e33c1e964cff9c715a65032c7efd
Created
November 24, 2017 20:51
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| 10P.CHR$158;CHR$145;CHR$255;CHR$146;CHR$147;CHR$148;CHR$149 |
mattgodbolt
/ thing.h
Created
May 9, 2017 12:48
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| int libraryFunc() { return 1; } |
mattgodbolt
/ tree-output.txt
Created
December 25, 2016 13:16
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| ubuntu@ip-172-30-2-164:/opt/gcc-explorer/windows$ cd /opt/gcc-explorer/windows | |
| ubuntu@ip-172-30-2-164:/opt/gcc-explorer/windows$ tree | |
| . | |
| ├── 10.0.10240.0 | |
| │ └── ucrt | |
| │ ├── assert.h | |
| │ ├── complex.h | |
| │ ├── conio.h | |
| │ ├── corecrt.h | |
| │ ├── corecrt_io.h |
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