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last stuff for the night (need to clean up later)

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ed
2026-06-02 02:10:04 -04:00
parent 0573644494
commit 1b1c926318
2 changed files with 154 additions and 12 deletions
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code/duffle/gte.h
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@@ -281,6 +281,15 @@ enum { _C2_OPS_ = 0
#define enc_cop2_lwc2(rt, base, off) enc_i(op_lwc2, (base), (rt), (off))
#define enc_cop2_swc2(rt, base, off) enc_i(op_swc2, (base), (rt), (off))
/* Semantic aliases for the COP2 data load/store. The `c2` in `lwc2`/
* `swc2` is redundant when we're already inside the `gte_` namespace.
* gte_lw rt, base, off → lwc2 rt, off(base)
* gte_sw rt, base, off → swc2 rt, off(base)
* For the typical user-facing vector-level load (xy + z as two
* instructions), use the higher-level `gte_load_vN` macros below. */
#define gte_lw(rt, base, off) enc_cop2_lwc2(rt, base, off)
#define gte_sw(rt, base, off) enc_cop2_swc2(rt, base, off)
/* GTE Command Format (The math engine trigger)
* Opcode is always MIPS_OP_COP2, RS is always 1 (CO).
* The lower 25 bits are the GTE-specific command payload.