code wiki / _hdl_build / _gpu_dxg_r5a_probe.nx

_gpu_dxg_r5a_probe.nx

buildroot/runtime/_hdl_build/_gpu_dxg_r5a_probe.nx

8551 B119 linesdepth 2pulls 2 transitivereach 0 importersview sourcekind probetopic gpu

docs dependencies structs consts functions

about

_gpu_dxg_r5a_probe.nx -- R5a SUBMIT offset probe (SAFE): find broadcast_context_count + broadcast_context[0] offsets. With command_length=0 (no-op submit: well-formed, the GPU executes 0 bytes => no TDR), a submit whose count is valid AND context resolves returns NON-(-22) (host accepts the empty submit); a wrong offset leaves count=0 or ctx unresolved => -22. Sweep (count_off, ctx_off) candidates. Then do the REAL semaphore submit (length=24) with the working offsets and read the target CPU-side. raw syscalls only. 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

8	const ENUM2_CODE: i64 = 0xC0104714
9	const QAI_CODE: i64 = 0xC0184709
10	const OAFL_CODE: i64 = 0xC00C4701
11	const CDEV_CODE: i64 = 0xC0404702
12	const CCV_CODE: i64 = 0xC0284704
13	const CPQ_CODE: i64 = 0xC0204707
14	const CALLOC_CODE: i64 = 0xC0484706
15	const MAPVA_CODE: i64 = 0xC068470C
16	const MKRES_CODE: i64 = 0xC030470B
17	const SUBMIT_CODE: i64 = 0xC180470F

functions

19	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 } called by 2: x main calls 1: sys_write
20	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 } called by 1: main calls 2: sys_mmap sys_write
21	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 } called by 1: main calls 3: p sys_mmap sys_write
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) } called by 7: query_type open_from_luid create_device create_ctx create_pq alloc_eh+1
23	func rd64(buf: u8, off: i64) -> i64 { let q: i64 = (buf as i64 + off) as *i64; return q[0] } called by 2: create_pq map_va
24	func setu32(buf: u8, off: i64, val: i64) -> i64 { let w: u8 = (buf as i64 + off) as *u8; w[0]=(val&0xff) as u8; w[1]=((val>>8)&0xff) as u8; w[2]=((val>>16)&0xff) as u8; w[3]=((val>>24)&0xff) as u8; return 0 } called by 7: create_device create_ctx create_pq alloc_eh map_va makeresident+1
25	func setu64(buf: u8, off: i64, val: i64) -> i64 { let q: i64 = (buf as i64 + off) as *i64; q[0]=val; return 0 } called by 4: alloc_eh map_va makeresident submit
27	func query_type(fd: i64, handle: i64, qtype: i64, psize: i64, outv: *i64) -> i64 called by 1: main calls 3: sys_mmap sys_ioctl rd32
35	func open_from_luid(fd: i64, luid_lo: i64, luid_hi: i64, outh: *i64) -> i64 called by 1: main calls 3: sys_mmap sys_ioctl rd32
40	func create_device(fd: i64, adapter: i64, outd: *i64) -> i64 called by 1: main calls 4: sys_mmap setu32 sys_ioctl rd32
45	func create_ctx(fd: i64, device: i64, outc: *i64) -> i64 called by 1: main calls 4: sys_mmap setu32 sys_ioctl rd32
50	func create_pq(fd: i64, device: i64, outpq: i64, outfva: i64) -> i64 called by 1: main calls 5: sys_mmap setu32 sys_ioctl rd32 rd64
55	func alloc_eh(fd: i64, device: i64, sysmem: u8, outh: i64) -> i64 called by 1: main calls 5: sys_mmap setu32 setu64 sys_ioctl rd32
65	func map_va(fd: i64, pq: i64, alloc: i64, outva: *i64) -> i64 called by 1: main calls 5: sys_mmap setu32 setu64 sys_ioctl rd64
71	func makeresident(fd: i64, pq: i64, alloc_handle: i64) -> i64 called by 1: main calls 4: sys_mmap setu32 setu64 sys_ioctl
79	func submit(fd: i64, cmdbuf: i64, len: i64, count_off: i64, ctx_off: i64, context: i64) -> i64 called by 1: main calls 4: sys_mmap setu64 setu32 sys_ioctl
86	func main() -> i64 calls 18: p sys_openat_rd sys_exit sys_mmap sys_ioctl rd32+12