code wiki / _hdl_build / _gpu_dxg_r4_recon.nx
_gpu_dxg_r4_recon.nx
buildroot/runtime/_hdl_build/_gpu_dxg_r4_recon.nx
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_gpu_dxg_r4_recon.nx -- SOVEREIGN-GPU ladder R4 RECON (create a GPU CONTEXT on the WDDM device).
R3 made a real WDDM device. R4 (command-submission sub-arc) starts with a CONTEXT -- the queue GPU
work is submitted on. WSL2 typically routes this through LX_DXCREATECONTEXTVIRTUAL (paravirt path).
No uapi header on this kernel, so discover the ABI live: sweep BOTH nr=0x03 (CREATECONTEXT) and
nr=0x04 (CREATECONTEXTVIRTUAL) across candidate sizes with device@0 + node_ordinal/engine/hint = 0 and
a NULL priv_drv_data(size 0). ret==0 marks the real size; scan for a 0x4000xxxx OUT context handle.
A non-ENOTTY error (e.g. -EINVAL/-22) at a given size means that nr+size IS the recognized ABI but the
INPUT fields need more than zeros (then R4a needs a focused session). raw syscalls only. No log writes.
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
| 13 | const ENUM2_CODE: i64 = 0xC0104714 |
| 14 | const QAI_CODE: i64 = 0xC0184709 |
| 15 | const OAFL_CODE: i64 = 0xC00C4701 |
| 16 | const CDEV_CODE: i64 = 0xC0404702 // LX_DXCREATEDEVICE (R3) |
functions
| 18 | func p(s: *u8) -> i64 { var nn: i64=0; while s[nn]!=(0 as u8){nn=nn+1} sys_write(1,s,nn); return 0 } |
| 19 | func n(v: i64) -> i64 { let bb: *u8=sys_mmap(28); var m: i64=v; if m<0{m=0-m;sys_write(1,"-" as *u8,1)}; 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(1,bb,k); return 0 } |
| 20 | func x(v: i64) -> i64 { p("0x" as *u8); let bb:*u8=sys_mmap(20); var k:i64=0; var m:i64=v; if m==0{bb[0]=48;k=1}; while m>0{ let d:i64=m&15; if d<10{bb[k]=(48+d) as u8}else{bb[k]=(87+d) as u8}; m=(m>>4); k=k+1 } var i:i64=0; let o:*u8=sys_mmap(20); while i<k{o[i]=bb[k-1-i];i=i+1} sys_write(1,o,k); return 0 } |
| 21 | func iowr(nr: i64, size: i64) -> i64 { return (3 << 30) | ((size & 0x3fff) << 16) | (0x47 << 8) | (nr & 0xff) } called by 1: sweep |
| 22 | func rd32(buf: *u8, off: i64) -> i64 { return (buf[off] as i64)|((buf[off+1] as i64)<<8)|((buf[off+2] as i64)<<16)|((buf[off+3] as i64)<<24) } |
| 24 | func query_type(fd: i64, handle: i64, qtype: i64, psize: i64, outv: *i64) -> i64 |
| 32 | func open_from_luid(fd: i64, luid_lo: i64, luid_hi: i64, outh: *i64) -> i64 |
| 37 | func create_device(fd: i64, adapter: i64, outd: *i64) -> i64 |
| 44 | func sweep(fd: i64, nr: i64, device: i64) -> i64 |
| 66 | func main() -> i64 |