code wiki / _hdl_build / nx_ad_emit.nx
nx_ad_emit.nx
buildroot/runtime/_hdl_build/nx_ad_emit.nx
about
nx_ad_emit.nx -- ACCESSED/DIRTY bit tracking (Sv39 A/D, X-PAGE-AD-001). The demand-paging foundation:
the hardware sets the leaf PTE's Accessed bit (6) on ANY access and the Dirty bit (7) on a STORE, so
the OS can drive page replacement (evict un-accessed pages) + dirty write-back (flush only D=1 pages).
The PTE starts A=0,D=0; an S-mode load (sets A) then store (sets D) to the page; an ecall to the M-mode
kernel, which reads the leaf PTE PHYSICALLY (M-mode identity) and confirms A=1 && D=1 -> "ADOK".
do_access (argv[1]) -- default 1. The gate's control passes 0 (NO access) -> A/D stay 0 -> "ADN",
proving the bits are SET BY THE ACCESS, not pre-set. out-path (argv[2]).
Sovereign, no gcc/.sh. 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
| 10 | const AD_MAGIC_8192: i64 = 8192 |
| 12 | const AD_OUT: *u8 = "runtime/_hdl_build/_ad_virt.bin" |
| 13 | const AD_GOLD: *u8 = "runtime/_hdl_build/_ad_virt.bin.gold" |
| 14 | const AD_LOG: *u8 = "knowledge/status/paging.log" |
| 16 | const AD_UART: i64 = 0x10000000 |
| 17 | const AD_FIN: i64 = 0x100000 |
| 18 | const AD_PASS: i64 = 0x5555 |
| 19 | const AD_MEM_BASE: i64 = 0x80000000 |
| 20 | const AD_CSR_SATP: i64 = 0x180 |
| 21 | const AD_CSR_MSTATUS: i64 = 0x300 |
| 22 | const AD_CSR_MTVEC: i64 = 0x305 |
| 23 | const AD_CSR_MEPC: i64 = 0x341 |
| 24 | const AD_MRET: i64 = 0x30200073 |
| 25 | const AD_ECALL: i64 = 0x00000073 |
| 26 | const AD_MPP_S: i64 = 0x800 |
| 28 | const RV_X0: i64 = 0 |
| 29 | const RV_T0: i64 = 5 |
| 30 | const RV_T1: i64 = 6 |
| 31 | const RV_T2: i64 = 7 |
| 32 | const RV_T3: i64 = 28 |
| 33 | const RV_T5: i64 = 30 |
| 35 | const AD_PTE_ADDR: i64 = 0x80008000 |
| 36 | const AD_DATA_PTE_PHYS: i64 = 0x80008018 // root[VPN2=3] -- the data leaf the handler inspects |
| 37 | const AD_CODE_PTE: i64 = 0x2000000F // root[VPN2=2] identity code (V|R|W|X) |
| 38 | const AD_DATA_PTE: i64 = 0x20000007 // root[VPN2=3] data gigapage (V|R|W, A=0 D=0) |
| 39 | const AD_SENT_PA: i64 = 0x80009000 |
| 40 | const AD_SENT_VAL: i64 = 0x5ECA1234 |
| 41 | const AD_VA: i64 = 0xC0009000 |
| 42 | const AD_SATP_PPN: i64 = 0x80008 |
| 43 | const AD_SV39: i64 = 8 |
functions
| 45 | func ad_lui(rd: i64, imm20: i64) -> i64 { return ((imm20 & 0xFFFFF) << 12) | (rd << 7) | 0x37 } |
| 46 | func ad_addi(rd: i64, rs1: i64, imm: i64) -> i64 { return ((imm & 0xFFF) << 20) | (rs1 << 15) | (rd << 7) | 0x13 } |
| 47 | func ad_andi(rd: i64, rs1: i64, imm: i64) -> i64 { return ((imm & 0xFFF) << 20) | (rs1 << 15) | (7 << 12) | (rd << 7) | 0x13 } called by 1: ad_emit_image |
| 48 | func ad_load(rd: i64, rs1: i64, f3: i64, imm: i64) -> i64 { return ((imm & 0xFFF) << 20) | (rs1 << 15) | (f3 << 12) | (rd << 7) | 0x03 } called by 1: ad_emit_image |
| 49 | func ad_store(rs2: i64, rs1: i64, f3: i64, imm: i64) -> i64 |
| 54 | func ad_branch(rs1: i64, rs2: i64, f3: i64, imm: i64) -> i64 called by 1: ad_emit_image |
| 61 | func ad_jal(rd: i64, imm: i64) -> i64 called by 1: ad_emit_image |
| 68 | func ad_slli(rd: i64, rs1: i64, shamt: i64) -> i64 { return ((shamt & 0x3f) << 20) | (rs1 << 15) | (1 << 12) | (rd << 7) | 0x13 } |
| 69 | func ad_srli(rd: i64, rs1: i64, shamt: i64) -> i64 { return ((shamt & 0x3f) << 20) | (rs1 << 15) | (5 << 12) | (rd << 7) | 0x13 } called by 1: ad_li32u |
| 70 | func ad_or(rd: i64, rs1: i64, rs2: i64) -> i64 { return (rs2 << 20) | (rs1 << 15) | (6 << 12) | (rd << 7) | 0x33 } called by 1: ad_emit_image |
| 71 | func ad_csrrw(rd: i64, csr: i64, rs1: i64) -> i64 { return ((csr & 0xfff) << 20) | (rs1 << 15) | (1 << 12) | (rd << 7) | 0x73 } called by 1: ad_emit_image |
| 72 | func ad_w32(buf: *u8, off: i64, w: i64) -> i64 { buf[off]=(w&0xff) as u8; buf[off+1]=((w>>8)&0xff) as u8; buf[off+2]=((w>>16)&0xff) as u8; buf[off+3]=((w>>24)&0xff) as u8; return off+4 } |
| 73 | func ad_li32(buf: *u8, off: i64, rd: i64, val: i64) -> i64 |
| 81 | func ad_li32u(buf: *u8, off: i64, rd: i64, val: i64) -> i64 |
| 87 | func ad_emit_str(buf: *u8, off: i64, s: *u8, n: i64) -> i64 |
| 93 | func ad_p(s: *u8) -> i64 { var n: i64=0; while s[n]!=(0 as u8){n=n+1} sys_write(1,s,n); return 0 } |
| 94 | func ad_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 } |
| 97 | func ad_emit_image(buf: *u8, cont_off: i64, handler_off: i64, adn_off: i64, halt_off: i64, pos_out: *i64, do_access: i64) -> i64 |
| 145 | func ad_parse_num(s: *u8) -> i64 called by 1: main |
| 158 | func main(argc: i64, argv: *i64) -> i64 |