Thanks for using Compiler Explorer
Sponsors
Jakt
C++
Ada
Analysis
Android Java
Android Kotlin
Assembly
C
C3
Carbon
C++ (Circle)
CIRCT
Clean
CMake
CMakeScript
COBOL
C++ for OpenCL
MLIR
Cppx
Cppx-Blue
Cppx-Gold
Cpp2-cppfront
Crystal
C#
CUDA C++
D
Dart
Elixir
Erlang
Fortran
F#
Go
Haskell
HLSL
Hook
Hylo
ispc
Java
Julia
Kotlin
LLVM IR
LLVM MIR
Modula-2
Nim
Objective-C
Objective-C++
OCaml
OpenCL C
Pascal
Pony
Python
Racket
Ruby
Rust
Snowball
Scala
Solidity
Spice
Swift
LLVM TableGen
Toit
TypeScript Native
V
Vala
Visual Basic
WASM
Zig
Javascript
GIMPLE
assembly source #1
Output
Compile to binary object
Link to binary
Execute the code
Intel asm syntax
Demangle identifiers
Verbose demangling
Filters
Unused labels
Library functions
Directives
Comments
Horizontal whitespace
Debug intrinsics
Compiler
AArch64 binutils 2.28
AArch64 binutils 2.31.1
AArch64 binutils 2.33.1
AArch64 binutils 2.35.1
AArch64 binutils 2.38
ARM binutils 2.25
ARM binutils 2.28
ARM binutils 2.31.1
ARM gcc 10.2 (linux)
ARM gcc 9.3 (linux)
ARMhf binutils 2.28
BeebAsm 1.09
NASM 2.12.02
NASM 2.13.02
NASM 2.13.03
NASM 2.14.02
NASM 2.16.01
PTX Assembler 10.0.130
PTX Assembler 10.1.105
PTX Assembler 10.1.168
PTX Assembler 10.1.243
PTX Assembler 10.2.89
PTX Assembler 11.0.2
PTX Assembler 11.0.3
PTX Assembler 11.1.0
PTX Assembler 11.1.1
PTX Assembler 11.2.0
PTX Assembler 11.2.1
PTX Assembler 11.2.2
PTX Assembler 11.3.0
PTX Assembler 11.3.1
PTX Assembler 11.4.0
PTX Assembler 11.4.1
PTX Assembler 11.5.0
PTX Assembler 9.1.85
PTX Assembler 9.2.88
RISC-V binutils 2.31.1
RISC-V binutils 2.31.1
RISC-V binutils 2.35.1
RISC-V binutils 2.35.1
RISC-V binutils 2.37.0
RISC-V binutils 2.37.0
RISC-V binutils 2.38.0
RISC-V binutils 2.38.0
x86-64 binutils (trunk)
x86-64 binutils 2.27
x86-64 binutils 2.28
x86-64 binutils 2.29.1
x86-64 binutils 2.34
x86-64 binutils 2.36.1
x86-64 binutils 2.38
x86-64 clang (assertions trunk)
x86-64 clang (trunk)
x86-64 clang 10.0.0
x86-64 clang 10.0.1
x86-64 clang 11.0.0
x86-64 clang 11.0.1
x86-64 clang 12.0.0
x86-64 clang 12.0.1
x86-64 clang 13.0.0
x86-64 clang 14.0.0
x86-64 clang 15.0.0
x86-64 clang 16.0.0
x86-64 clang 17.0.1
x86-64 clang 18.1.0
x86-64 clang 3.0.0
x86-64 clang 3.1
x86-64 clang 3.2
x86-64 clang 3.3
x86-64 clang 3.4.1
x86-64 clang 3.5
x86-64 clang 3.5.1
x86-64 clang 3.5.2
x86-64 clang 3.6
x86-64 clang 3.7
x86-64 clang 3.7.1
x86-64 clang 3.8
x86-64 clang 3.8.1
x86-64 clang 3.9.0
x86-64 clang 3.9.1
x86-64 clang 4.0.0
x86-64 clang 4.0.1
x86-64 clang 5.0.0
x86-64 clang 6.0.0
x86-64 clang 7.0.0
x86-64 clang 8.0.0
x86-64 clang 9.0.0
Options
Source code
; convert a 0DH (LF) terminated string in [SI] into ; QWORD DI:SI:CX:BX ATOQWORD PROC XOR BX, BX ; clear QWORD registers XOR CX, CX XOR DX, DX ; (use DX instead of SI since SI is input string) XOR DI, DI A_LOOP: LODSB ; load [SI] into AL SUB AL, '0' ; convert to digit JB A_DONE ; is end of string input? PUSH AX ; save new digit CALL SHL_QWORD ; shift QWORD left one time PUSH DI ; save values of QWORD PUSH DX PUSH CX PUSH BX CALL SHL_QWORD ; shift QWORD left again two times CALL SHL_QWORD POP AX ; add original BX ADD BX, AX POP AX ; add original CX ADC CX, AX POP AX ; add original DX ADC DX, AX POP AX ; add original DI ADC DI, AX POP AX ; restore new digit CBW ; clear AH ADD BX, AX ; add new digit ADC CX, 0 ; propagate carry ADC DX, 0 ADC DI, 0 JMP A_LOOP SHL_QWORD: ; shift QWORD DI:DX:CX:BX left one time SHL BX, 1 ; with propagation RCL CX, 1 RCL DX, 1 RCL DI, 1 RET A_DONE: MOV SI, DX ; return with SI for consistency of calling RET ATOQWORD ENDP
Become a Patron
Sponsor on GitHub
Donate via PayPal
Source on GitHub
Mailing list
Installed libraries
Wiki
Report an issue
How it works
Contact the author
CE on Mastodon
About the author
Statistics
Changelog
Version tree