smoke_nxasm_demo.nx source
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1// Take nxc2's actual asm output for a simple program and try to
2// assemble it with nxasm_v2. Returns:
3// 200 + 0..63 if assemble returned -1 (unknown mnemonic)
4// 201 if assemble returned -2 (pass 1 fail)
5// 202 if assemble returned -3 (pass 2 fail)
6// 0..127 = code byte count (n & 0x7F)
7// 128..199 if n was unexpectedly negative
8
9import "syscalls.nx"
10import "nxasm_v2.nx"
11
12func main() -> i64 {
13 let s: *u8 = " .text\n .globl main\nmain:\n addi sp, sp, -48\n sd ra, 40(sp)\n sd s4, 0(sp)\n sd s5, 8(sp)\n sd s6, 16(sp)\n sd s7, 24(sp)\n.Lmain_bb0:\n li a0, 30\n li a7, 93\n ecall\n mv s4, a0\n mv a0, s4\n ld s7, 24(sp)\n ld s6, 16(sp)\n ld s5, 8(sp)\n ld s4, 0(sp)\n ld ra, 40(sp)\n addi sp, sp, 48\n ret\n"
14 var sl: i64 = 0
15 while s[sl] != 0 { sl = sl + 1 }
16 let out: *u8 = alloc(512)
17 let n: i64 = assemble(s, sl, out, 512)
18 if n == -1 { return __syscall(93, 200, 0, 0, 0, 0, 0) }
19 if n == -2 { return __syscall(93, 201, 0, 0, 0, 0, 0) }
20 if n == -3 { return __syscall(93, 202, 0, 0, 0, 0, 0) }
21 return __syscall(93, n & 0xFF, 0, 0, 0, 0, 0)
22}