code wiki / _hdl_build / _4kpage_gate.nx

_4kpage_gate.nx

buildroot/runtime/_hdl_build/_4kpage_gate.nx

4545 B87 linesdepth 2pulls 2 transitivereach 0 importersview sourcekind gate/proof
docsdependenciesstructsconstsfunctions

about

_4kpage_gate.nx -- LOCK for the FULL 3-LEVEL Sv39 walk with a 4KB-page leaf (X-PAGE-4K-001). NO mocks. Proves VA 0xC0009000 resolves through ALL THREE levels (root -> L1 -> L0 -> 4KB leaf) to read the sentinel, and that the walk VALIDATES the intermediate L1 level (not just the root/leaf): T1 full-walk : default L1 PTE -> the 3-level walk reaches the 4KB data page -> "K4OK" T2 tamper-L1 : L1 PTE V=0 (0x20000C00) -> the walk faults at level 1 -> "K4OK" never prints GREEN only if T1 && T2. Evidence -> knowledge/status/paging.log (K4GATE). license_tier: ORIGINAL

dependencies 1 imports · 0 importers

nx_syscalls.nx _4kpage_gate.nx

imports: nx_syscalls.nx

imported by: nobody (leaf or entry point)

call flow from main pre-order; caps 40 nodes / depth 6 declared; ↻ = already shown

main sys_mmap g_case g_run sys_fork sys_openat_wr sys_dup3 sys_mmap ↻ sys_execve sys_exit sys_wait4 g_read sys_openat_rd sys_read sys_close g_has g_p sys_write g_row g_p ↻ sys_openat_append g_fp sys_write ↻ g_fn sys_mmap ↻ sys_write ↻ sys_now_realtime_sec sys_mmap ↻ sys_clock_gettime_real sys_close ↻ sys_exit ↻

structs

none

consts

9const K4_EMIT: *u8 = "_offc/nx_4kpage_emit.elf"
10const K4_SOV: *u8 = "_offc/nx_boot_run_sov.elf"

functions

12func g_p(s: *u8) -> i64 { var n: i64=0; while s[n]!=(0 as u8){n=n+1} sys_write(1,s,n); return 0 }
called by 2: g_rowmain calls 1: sys_write
13func g_fp(fd: i64, s: *u8) -> i64 { var n: i64=0; while s[n]!=(0 as u8){n=n+1} sys_write(fd,s,n); return 0 }
called by 1: main calls 1: sys_write
14func g_fn(fd: i64, v: i64) -> i64 { let bb: *u8=sys_mmap(28); var m: i64=v; if m<0{m=0-m}; let t: *u8=sys_mmap(28); var k: i64=0; if m==0{t[0]=48;k=1}; while m>0{t[k]=(48+(m%10)) as u8;m=m/10;k=k+1}; var i: i64=0; while i<k{bb[i]=t[k-1-i];i=i+1}; sys_write(fd,bb,k); return 0 }
called by 1: main calls 2: sys_mmapsys_write
16func g_run(prog: *u8, a1: *u8, a2: *u8, outpath: *u8) -> i64
called by 1: g_case calls 7: sys_forksys_openat_wrsys_dup3sys_mmapsys_execvesys_exit+1
35func g_read(path: *u8, buf: *u8, cap: i64) -> i64
called by 1: g_case calls 3: sys_openat_rdsys_readsys_close
44func g_has(buf: *u8, n: i64, pat: *u8, pl: i64) -> i64
called by 1: main
50func g_case(l1: *u8, binp: *u8, txt: *u8, buf: *u8) -> i64
called by 1: main calls 2: g_rung_read
55func g_row(name: *u8, pass: i64) -> i64 { g_p(" " as *u8); g_p(name); if pass==1 { g_p(" PASS\n" as *u8) } else { g_p(" FAIL\n" as *u8) } return 0 }
called by 1: main calls 1: g_p
57func main() -> i64
calls 11: sys_mmapg_caseg_hasg_pg_rowsys_openat_append+5