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# |
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# Risc-V Assembler program to print "Hello World!" |
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# to stdout. |
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# |
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# a0-a2 - parameters to linux function services |
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# a7 - linux function number |
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# |
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.global _start # Provide program starting address to linker |
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# Setup the parameters to print hello world |
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# and then call Linux to do it. |
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_start: addi a0, x0, 1 # 1 = StdOut |
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la a1, helloworld # load address of helloworld |
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addi a2, x0, 13 # length of our string |
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addi a7, x0, 64 # linux write system call |
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ecall # Call linux to output the string |
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# Setup the parameters to exit the program |
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# and then call Linux to do it. |
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addi a0, x0, 0 # Use 0 return code |
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addi a7, x0, 93 # Service command code 93 terminates |
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ecall # Call linux to terminate the program |
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.data |
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helloworld: .ascii "Hello World!\n" |
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# From https://smist08.wordpress.com/2019/09/07/risc-v-assembly-language-hello-world/ |
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