_sched_gate.nx

buildroot/runtime/_hdl_build/_sched_gate.nx

6514 B114 linesdepth 2pulls 2 transitivereach 0 importersview sourcekind gate/prooftopic sched

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_sched_gate.nx -- gate for the 2-task PREEMPTIVE SCHEDULER slice. NO mocks: runs the REAL nx_sched_emit, RUNS the image on the SOVEREIGN rv64 emu, and asserts a STRUCTURAL property honest for a preemptive phenomenon: the serial has boot 'S' + BOTH task markers 'A' and 'B' in MANY alternating runs (>=8 A<->B transitions = the scheduler preempted + context-switched repeatedly) + a clean finisher halt. Then TAMPER: zero the mie.MTIE-enable byte -> no timer -> no preemption -> task A loops alone -> 'B' never appears, transitions collapse -> the gate MUST go RED (proves the SWITCHING is really timer-preemption, not a rubber stamp). Evidence -> knowledge/status/sched.log (SCHEDGATE row). license_tier: ORIGINAL

dependencies 1 imports · 0 importers

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

structs

none

consts

none

functions

11	func 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 1: main calls 1: sys_write
12	func 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
13	func 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_mmap sys_write
15	func g_run1(prog: u8, arg1: u8, outpath: *u8) -> i64 called by 1: main calls 7: sys_fork sys_openat_wr sys_dup3 sys_mmap sys_execve sys_exit+1
33	func g_read(path: u8, buf: u8, cap: i64) -> i64 called by 1: main calls 3: sys_openat_rd sys_read sys_close
43	func g_has(buf: *u8, n: i64, ch: i64) -> i64 { var i: i64=0; while i<n { if buf[i]==(ch as u8) { return 1 } i=i+1 } return 0 } called by 1: main
46	func g_transitions(buf: *u8, n: i64) -> i64 called by 1: main
60	func main() -> i64 calls 14: g_p sys_openat_append g_run1 g_fp sys_close sys_exit+8