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silicon: fix CC mismatches (normalizeVec3InPlace TC, packParticleColor TC, addVec3ToAccumulator remove phantom scale param, revert classifyPointFrustum/testOBBFrustum to TC); runtime JMP address resolution

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This commit is contained in:
MarcelineVQ
2026-03-17 13:33:51 -07:00
parent dc37042e6a
commit 10bd922cc3
3 changed files with 59 additions and 27 deletions
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src/silicon/silicon.zig
+51 -20
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@@ -2065,7 +2065,7 @@ pub fn installHooks() void {
const sse = struct {
// silicon_sse.zig exports (linked via object file)
extern fn si_normalizeVec3(u32, u32) callconv(TC) void;
extern fn si_normalizeVec3() callconv(.naked) void;
extern fn si_mulMat3x4(u32, u32, u32) callconv(FC) u32;
extern fn si_rotateMatByQuat(u32, u32) callconv(TC) u32;
extern fn si_createRotMat3x4(u32, u32, u32, u32) callconv(FC) u32;
@@ -2078,13 +2078,13 @@ const sse = struct {
extern fn si_isPointInsideBounds() callconv(.naked) void;
extern fn si_calculateSinCos(u32, u32, u32) callconv(SC) void;
extern fn si_createZRotMat3x3(u32, u32) callconv(TC) u32;
extern fn si_transposeMat4x4(u32, u32) callconv(TC) u32;
extern fn si_transposeMat4x4() callconv(.naked) void;
extern fn si_mulMat3x4InPlace(u32, u32) callconv(TC) u32;
extern fn si_normalizeVec3InPlace(u32) callconv(FC) void;
extern fn si_addVec3ToAccumulator(u32, u32, u32) callconv(TC) void;
extern fn si_addToColorAccumulator(u32, u32) callconv(TC) void;
extern fn si_packParticleColor(u32, u32, u32, u32) callconv(FC) void;
extern fn si_setParticleAlpha(u32, u32) callconv(FC) void;
extern fn si_normalizeVec3InPlace(u32) callconv(TC) void;
extern fn si_addVec3ToAccumulator(u32, u32) callconv(TC) void;
extern fn si_addToColorAccumulator() callconv(.naked) void;
extern fn si_packParticleColor(u32, u32, u32, u32) callconv(TC) void;
extern fn si_setParticleAlpha() callconv(.naked) void;
extern fn si_ftol() callconv(.naked) void;
extern fn si_vec3Dot() callconv(.naked) void;
extern fn si_translateBoundingVol(u32, u32) callconv(TC) void;
@@ -2126,22 +2126,53 @@ fn getPatchTable() []const PatchEntry {
return &table;
}
fn patchJmp(target: u32, replacement: u32) void {
const rel = @as(i32, @bitCast(replacement -% target -% 5));
var patch = [5]u8{ 0xE9, 0, 0, 0, 0 };
@as(*align(1) i32, @ptrCast(patch[1..5])).* = rel;
hook.writeProtected(target, &patch);
}
fn patchDirect(target: u32, src: [*]const u8, size: usize) void {
hook.writeProtected(target, src[0..size]);
}
fn installPatches() u32 {
var count: u32 = 0;
for (getPatchTable()) |entry| {
if (entry.direct_size > 0) {
// Direct byte copy: naked asm replacement fits in original
const src: [*]const u8 = @ptrFromInt(entry.replacement);
hook.writeProtected(entry.target, src[0..entry.direct_size]);
} else {
// JMP rel32: E9 XX XX XX XX
const rel = @as(i32, @bitCast(entry.replacement -% entry.target -% 5));
var patch = [5]u8{ 0xE9, 0, 0, 0, 0 };
@as(*align(1) i32, @ptrCast(patch[1..5])).* = rel;
hook.writeProtected(entry.target, &patch);
const patch = struct {
fn jmp(target: u32, comptime func: anytype) void {
patchJmp(target, @intFromPtr(func));
}
count += 1;
}
fn direct(target: u32, comptime func: anytype, size: usize) void {
patchDirect(target, @as([*]const u8, @ptrCast(func)), size);
}
};
patch.jmp(0x4549C0, &sse.si_normalizeVec3);
patch.jmp(0x7BAE60, &sse.si_mulMat3x4);
patch.jmp(0x7BDDB0, &sse.si_rotateMatByQuat);
patch.jmp(0x7BB860, &sse.si_createRotMat3x4);
patch.jmp(0x686C20, &sse.si_classifyPointFrustum);
patch.jmp(0x6DC5A0, &sse.si_checkBoxLineIntersect);
patch.jmp(0x6869C0, &sse.si_testOBBFrustum);
patch.jmp(0x686B80, &sse.si_testSphereFrustum);
patch.jmp(0x7C0570, &sse.si_quatSlerp);
patch.jmp(0x749280, &sse.si_calculateSinCos);
patch.jmp(0x7BE5B0, &sse.si_createZRotMat3x3);
patch.jmp(0x7BB420, &sse.si_mulMat3x4InPlace);
patch.jmp(0x6720F0, &sse.si_normalizeVec3InPlace);
patch.jmp(0x71BC70, &sse.si_addVec3ToAccumulator);
patch.jmp(0x71BF60, &sse.si_addToColorAccumulator);
patch.jmp(0x7B7A80, &sse.si_packParticleColor);
patch.jmp(0x7B7B10, &sse.si_setParticleAlpha);
patch.jmp(0x686820, &sse.si_translateBoundingVol);
count += 18;
// Direct byte patches (naked asm that fits in original)
patch.direct(0x40A2B0, &sse.si_ftol, 9);
patch.direct(0x7BCEF0, &sse.si_transposeMat4x4, 64);
count += 2;
return count;
}