47 lines
1.8 KiB
C
47 lines
1.8 KiB
C
// fg_tiny_gate_box.h - Tiny Front Gate guard box
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// 役割: FG_DOMAIN_TINY 判定が出た時に Superslab 登録を確認し、誤分類なら MIDCAND に切替
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// 境界: Tiny 経路へ入る前に 1 箇所でのみ実行する
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#ifndef HAK_BOX_FG_TINY_GATE_H
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#define HAK_BOX_FG_TINY_GATE_H
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#include "../hakmem_super_registry.h" // hak_super_lookup / SUPERSLAB_MAGIC
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#include "front_gate_v2.h"
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#include <stdatomic.h>
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#include <stdio.h>
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typedef struct {
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fg_classification_t fg;
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int misclassified; // 1 when Tiny→MIDCAND に落とした
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} fg_tiny_gate_result_t;
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// 簡易ログ（初回のみ）
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static inline void fg_tiny_gate_log(void* ptr, uint8_t hdr, uintptr_t off, int use_ss, int reg_init) {
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static _Atomic int log_budget = 4;
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int n = atomic_fetch_add_explicit(&log_budget, 1, memory_order_relaxed);
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if (n >= 4) return;
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fprintf(stderr,
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"[FG_TINY_MISCLASS] ptr=%p hdr=0x%02x off=0x%lx g_use_ss=%d reg_init=%d → reroute to MIDCAND\n",
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ptr, hdr, (unsigned long)off, use_ss, reg_init);
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}
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// Tiny判定のガード: Superslab登録が無ければ MIDCAND に変換
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static inline fg_tiny_gate_result_t fg_tiny_gate(void* ptr, fg_classification_t fg) {
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fg_tiny_gate_result_t r = {.fg = fg, .misclassified = 0};
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if (fg.domain != FG_DOMAIN_TINY) return r;
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SuperSlab* fg_ss = hak_super_lookup(ptr);
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if (__builtin_expect(!(fg_ss && fg_ss->magic == SUPERSLAB_MAGIC), 0)) {
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extern int g_use_superslab;
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extern int g_super_reg_initialized;
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uint8_t hdrb = 0;
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if ((uintptr_t)ptr > 0) { hdrb = *((uint8_t*)ptr - 1); }
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uintptr_t off = (uintptr_t)ptr & 0xFFFu;
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fg_tiny_gate_log(ptr, hdrb, off, g_use_superslab, g_super_reg_initialized);
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r.fg.domain = FG_DOMAIN_MIDCAND;
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r.misclassified = 1;
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}
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return r;
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}
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#endif // HAK_BOX_FG_TINY_GATE_H
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