2025-02-09 05:09:53 +00:00
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# RISC-V assembly program implementing a calculator.
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.org 0
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# Provide program starting address to linker
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.global _start
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2025-02-10 05:51:18 +00:00
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.extern regdump
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2025-02-11 12:08:32 +00:00
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.extern add64
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2025-02-10 04:00:44 +00:00
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2025-02-09 05:09:53 +00:00
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/* newlib system calls */
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.set SYSEXIT, 93
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.set SYSWRITE, 64
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2025-02-10 05:51:18 +00:00
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# .section .rodata
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2025-02-09 05:09:53 +00:00
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2025-02-10 05:51:18 +00:00
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# .section .bss
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2025-02-09 05:09:53 +00:00
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.text
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_start:
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# do some adding
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li a0, 0x80000000 # 0.5
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li a1, 1 # 1
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li a2, 0x80000000 # 0.5
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li a3, 1 # 1
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2025-02-10 05:51:18 +00:00
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jal add64
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2025-02-09 05:09:53 +00:00
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#add t1, a0, 0 # copy a0 to t0 as end with overwrite it
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jal regdump
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li t0, SYSEXIT # "exit" syscall
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add a0, x0, 0 # Use 0 return code
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ecall # invoke syscall to terminate the program
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