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refactor: replace load instruction opcodes with symbolic constants (Phase 2.2 step 1)

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Replace hardcoded opcodes in arm64_ldrx():
- 0x39400000 → ARM64_LDR_B
- 0x38400000 → ARM64_LDUR_B
- 0x38206800 → ARM64_LDR_B_REG

All tests pass.
This commit is contained in:
Benjamin Oldenburg 2026-03-21 00:52:53 +07:00
parent 714214a047
commit 84842db4b2
1 changed files with 3 additions and 3 deletions
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6
arm64-gen.c
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@ -331,14 +331,14 @@ static void arm64_ldrx(int sg, int sz_, int dst, int bas, uint64_t off)
if (sz >= 2)
sg = 0;
if (!(off & ~scaled_mask))
o(0x39400000 | dst | bas << 5 | off << (10 - sz) |
o(ARM64_LDR_B | dst | bas << 5 | off << (10 - sz) |
(uint32_t)!!sg << 23 | sz << 30); // ldr(*) x(dst),[x(bas),#(off)]
else if (off < 256 || -off <= 256)
o(0x38400000 | dst | bas << 5 | (off & 511) << 12 |
o(ARM64_LDUR_B | dst | bas << 5 | (off & 511) << 12 |
(uint32_t)!!sg << 23 | sz << 30); // ldur(*) x(dst),[x(bas),#(off)]
else {
arm64_movimm(30, off); // use x30 for offset
o(0x38206800 | dst | bas << 5 | (uint32_t)30 << 16 |
o(ARM64_LDR_B_REG | dst | bas << 5 | (uint32_t)30 << 16 |
(uint32_t)(!!sg + 1) << 22 | sz << 30); // ldr(*) x(dst),[x(bas),x30]
}
}