String concatenation: Difference between revisions
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(Add task to ARM assembly Raspberry pi) |
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display dialog totMsg |
display dialog totMsg |
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end try</lang> |
end try</lang> |
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=={{header|ARM Assembly}}== |
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{{works with|as|Raspberry Pi}} |
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<lang ARM Assembly> |
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/* ARM assembly Raspberry PI */ |
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/* program strConcat.s */ |
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/* Constantes */ |
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.equ STDOUT, 1 @ Linux output console |
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.equ EXIT, 1 @ Linux syscall |
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.equ WRITE, 4 @ Linux syscall |
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/* Initialized data */ |
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.data |
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szMessFinal: .asciz "The final string is \n" |
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szString: .asciz "Hello " |
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szString1: .asciz " the world. \n" |
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/* UnInitialized data */ |
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.bss |
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szFinalString: .skip 255 |
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/* code section */ |
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.text |
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.global main |
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main: |
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@ load string |
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ldr r1,iAdrszString |
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ldr r2,iAdrszFinalString |
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mov r4,#0 |
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1: |
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ldrb r0,[r1,r4] @ load byte of string |
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strb r0,[r2,r4] |
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cmp r0,#0 @ compar with zero ? |
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addne r4,#1 |
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bne 1b |
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ldr r1,iAdrszString1 |
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mov r3,#0 |
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2: |
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ldrb r0,[r1,r3] @ load byte of string 1 |
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strb r0,[r2,r4] |
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cmp r0,#0 @ compar with zero ? |
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addne r4,#1 |
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addne r3,#1 |
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bne 2b |
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mov r0,r2 @ display final string |
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bl affichageMess |
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100: @ standard end of the program */ |
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mov r0, #0 @ return code |
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mov r7, #EXIT @ request to exit program |
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svc 0 @ perform the system call |
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iAdrszString: .int szString |
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iAdrszString1: .int szString1 |
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iAdrszFinalString: .int szFinalString |
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iAdrszMessFinal: .int szMessFinal |
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/******************************************************************/ |
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/* display text with size calculation */ |
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/******************************************************************/ |
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/* r0 contains the address of the message */ |
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affichageMess: |
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push {r0,r1,r2,r7,lr} @ save registers |
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mov r2,#0 @ counter length */ |
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1: @ loop length calculation |
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ldrb r1,[r0,r2] @ read octet start position + index |
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cmp r1,#0 @ if 0 its over |
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addne r2,r2,#1 @ else add 1 in the length |
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bne 1b @ and loop |
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@ so here r2 contains the length of the message |
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mov r1,r0 @ address message in r1 |
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mov r0,#STDOUT @ code to write to the standard output Linux |
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mov r7, #WRITE @ code call system "write" |
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svc #0 @ call systeme |
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pop {r0,r1,r2,r7,lr} @ restaur des 2 registres |
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bx lr @ return |
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</lang> |
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=={{header|AutoHotkey}}== |
=={{header|AutoHotkey}}== |