id_digit и min
This commit is contained in:
Пытков Роман
29
is_digit/.vscode/launch.json
vendored
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29
is_digit/.vscode/launch.json
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@@ -0,0 +1,29 @@
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{
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"version": "0.2.0",
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"configurations": [
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{
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"name": "(lldb) Launch x64",
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"type": "lldb",
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"request": "launch",
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"program": "${workspaceFolder}/build/is_digit",
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"cwd": "${workspaceFolder}/build",
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"preLaunchTask": "asm64",
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},
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{
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"name": "(gdb) Launch x64",
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"type": "cppdbg",
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"request": "launch",
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"program": "${workspaceFolder}/build/is_digit",
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"cwd": "${workspaceFolder}/build",
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"preLaunchTask": "asm64"
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},
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{
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"name": "(gdb+gcc) Launch x64",
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"type": "cppdbg",
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"request": "launch",
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"program": "${workspaceFolder}/build/is_digit",
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"cwd": "${workspaceFolder}/build",
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"preLaunchTask": "asm64+gcc"
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}
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]
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}
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53
is_digit/.vscode/tasks.json
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53
is_digit/.vscode/tasks.json
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@@ -0,0 +1,53 @@
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{
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"version": "2.0.0",
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"tasks": [
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{
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"label": "asm64",
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"type": "shell",
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"command": [
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"builddir=${workspaceFolder}/build;",
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"mkdir -p $builddir;",
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"rawfilename=$builddir/is_digit;",
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"nasm -gdwarf -f elf64 -o $rawfilename.o ${workspaceFolder}/is_digit.asm;",
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"ld -g -o $rawfilename $rawfilename.o;"
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],
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"problemMatcher": {
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"pattern": {
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"regexp": "error"
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}
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},
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"presentation": {
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"focus": true,
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"panel": "dedicated",
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"reveal": "silent",
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"clear": true
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},
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"group": {
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"kind": "build",
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"isDefault": true
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}
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},
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{
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"label": "asm64+gcc",
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"type": "shell",
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"command": [
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"builddir=${workspaceFolder}/build;",
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"mkdir -p $builddir;",
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"rawfilename=$builddir/is_digit;",
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"nasm -gdwarf -f elf64 -o $rawfilename.o ${workspaceFolder}/is_digit.asm;",
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"gcc -o $rawfilename $rawfilename.o;"
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],
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"problemMatcher": {
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"pattern": {
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"regexp": "error"
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}
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},
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"presentation": {
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"focus": true,
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"panel": "dedicated",
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"reveal": "silent",
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"clear": true
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},
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}
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]
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}
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79
is_digit/is_digit.asm
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79
is_digit/is_digit.asm
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@@ -0,0 +1,79 @@
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global _start
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section .data
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g_buff times 10 db 0
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g_buffLen dq 0
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g_digit db "Digit"
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g_digitLen dq $-g_digit
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g_notDigit db "Not a digit"
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g_notDigitLen dq $-g_notDigit
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section .text
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default rel
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_start:
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call read_text
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movzx rax, byte [g_buff] ; первый символ
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cmp rax, '0'
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jl .notDigit
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cmp rax, '9'
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jg .notDigit
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.digit:
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lea rsi, [g_digit]
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mov rdx, [g_digitLen]
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jmp .write
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.notDigit:
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lea rsi, [g_notDigit]
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mov rdx, [g_notDigitLen]
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.write:
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call write_text
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mov rax, 60
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mov rdi, 0
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syscall
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; Функция читает текст в буффер
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; Регистры не изменяет
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read_text:
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push rax
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push rdi
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push rsi
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push rdx
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mov rax, 0 ; sys_read
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mov rdi, 0 ; stdin
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lea rsi, [rel g_buff] ; адрес буфера
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mov rdx, 256 ; количество байт
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syscall
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mov [g_buffLen], rax
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pop rdx
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pop rsi
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pop rdi
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pop rax
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ret
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; Функция выводит buff
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; In:
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; - RSI - начало буфера
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; - RDX - размер буфера
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; Регистры не изменяет
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write_text:
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push rax
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push rdi
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push rsi
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push rdx
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mov rax, 1 ; sys_write
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mov rdi, 1 ; stdout
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syscall
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mov [g_buffLen], rax
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pop rdx
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pop rsi
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pop rdi
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pop rax
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ret
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29
min/.vscode/launch.json
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29
min/.vscode/launch.json
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@@ -0,0 +1,29 @@
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{
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"version": "0.2.0",
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"configurations": [
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{
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"name": "(lldb) Launch x64",
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"type": "lldb",
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"request": "launch",
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"program": "${workspaceFolder}/build/min",
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"cwd": "${workspaceFolder}/build",
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"preLaunchTask": "asm64",
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},
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{
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"name": "(gdb) Launch x64",
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"type": "cppdbg",
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"request": "launch",
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"program": "${workspaceFolder}/build/min",
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"cwd": "${workspaceFolder}/build",
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"preLaunchTask": "asm64"
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},
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{
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"name": "(gdb+gcc) Launch x64",
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"type": "cppdbg",
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"request": "launch",
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"program": "${workspaceFolder}/build/min",
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"cwd": "${workspaceFolder}/build",
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"preLaunchTask": "asm64+gcc"
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}
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]
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}
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53
min/.vscode/tasks.json
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53
min/.vscode/tasks.json
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@@ -0,0 +1,53 @@
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{
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"version": "2.0.0",
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"tasks": [
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{
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"label": "asm64",
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"type": "shell",
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"command": [
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"builddir=${workspaceFolder}/build;",
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"mkdir -p $builddir;",
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"rawfilename=$builddir/min;",
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"nasm -gdwarf -f elf64 -o $rawfilename.o ${workspaceFolder}/min.asm;",
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"ld -g -o $rawfilename $rawfilename.o;"
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],
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"problemMatcher": {
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"pattern": {
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"regexp": "error"
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}
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},
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"presentation": {
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"focus": true,
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"panel": "dedicated",
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"reveal": "silent",
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"clear": true
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},
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"group": {
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"kind": "build",
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"isDefault": true
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}
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},
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{
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"label": "asm64+gcc",
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"type": "shell",
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"command": [
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"builddir=${workspaceFolder}/build;",
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"mkdir -p $builddir;",
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"rawfilename=$builddir/min;",
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"nasm -gdwarf -f elf64 -o $rawfilename.o ${workspaceFolder}/min.asm;",
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"gcc -o $rawfilename $rawfilename.o;"
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],
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"problemMatcher": {
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"pattern": {
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"regexp": "error"
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}
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},
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"presentation": {
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"focus": true,
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"panel": "dedicated",
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"reveal": "silent",
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"clear": true
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},
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}
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]
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}
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94
min/min.asm
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94
min/min.asm
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@@ -0,0 +1,94 @@
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global _start
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section .data
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arr db 5, 7, 3, 1, 2
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arrEnd:
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buff times 32 db 0
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buffend:
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count dq 0
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section .text
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default rel
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_start:
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mov al, 0xFF
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lea rsi, [arr]
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lea rdi, [arrEnd]
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.while:
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movzx rbx, byte [rsi] ; текущее число
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cmp rbx, rax
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cmovl rax, rbx
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inc rsi
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cmp rsi, rdi
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jne .while
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call print_num_to_buf
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mov rdx, [count]
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call write_text
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mov rax, 60
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mov rdi, 0
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syscall
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; Функция выводит buff
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; In:
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; - RSI - начало буфера
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; - RDX - размер буфера
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; Регистры не изменяет
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write_text:
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push rax
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push rdi
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push rsi
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push rdx
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mov rax, 1 ; sys_write
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mov rdi, 1 ; stdout
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syscall
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mov [count], rax
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pop rdx
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pop rsi
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pop rdi
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pop rax
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ret
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; Функция выводит число в buff
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; In: RAX
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; Out: RSI - указатель на начало строки
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print_num_to_buf:
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lea rsi, [buffend]
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dec rsi
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mov rdi, rsi ; сохранить последний адрес
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mov byte [rsi], 0 ; вписать нуль
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dec rsi
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mov byte [rsi], 0xA ; вписать перенос строки
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dec rsi
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mov byte [rsi], '0'
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test rax, rax
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jz .return
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mov rcx, 10 ; десятичный делитель
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.while:
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xor rdx, rdx
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test rax, rax
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jz .break
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div rcx
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or dl, 0x30
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mov [rsi], dl
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dec rsi
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jmp .while
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.break:
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inc rsi
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.return:
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sub rdi, rsi
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inc rdi
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mov [count], rdi
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ret
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@@ -12,6 +12,12 @@
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{
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"path": "repeat_str"
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},
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{
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"path": "min"
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},
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{
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"path": "is_digit"
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},
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{
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"path": "docs"
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},
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