{"type": "func", "start": 6443712740, "end": 6443713076, "name": "strnlen", "pseudocode": "// \n// strnlen from 0x1801340e4 to 0x180134234 (336 bytes)\n// \n// 2 xrefs:\n// > common_getenv @ 0x180128cef\n// > unknown_libname_53 @ 0x18012ebc6\n// \n// This function is hookable on this platform!\n// \n// Using BromaIDA 8.0.0 @ https://github.com/Stazzical/BromaIDA\n// Using bindings at commit ba9f177b at Thu Jul 16 22:52:06 2026 from https://github.com/geode-sdk/bindings\n// \n\nsize_t __cdecl strnlen(const char *String, size_t MaxCount)\n{\n const char *v4; // r9\n size_t v5; // r10\n const char *v6; // rax\n const char *v7; // rcx\n size_t v8; // rcx\n const char *v9; // r8\n size_t v11; // r10\n const char *v12; // rax\n const char *v13; // rcx\n const char *v14; // r8\n const char *i; // rax\n\n v4 = String;\n if ( dword_1801B1700 < 5 )\n {\n if ( dword_1801B1700 < 1 )\n {\n for ( i = &String[MaxCount]; String != i; ++String )\n {\n if ( !*String )\n break;\n }\n return String - v4;\n }\n v11 = (16LL - ((unsigned __int8)String & 0xF)) & -(__int64)(((unsigned __int8)String & 0xF) != 0);\n v12 = String;\n if ( MaxCount < v11 )\n v11 = MaxCount;\n v13 = &String[v11];\n if ( v4 != &v4[v11] )\n {\n do\n {\n if ( !*v12 )\n break;\n ++v12;\n }\n while ( v12 != v13 );\n }\n v8 = v12 - v4;\n if ( v12 - v4 == v11 )\n {\n String = v12;\n v14 = &v12[(MaxCount - v11) & 0xFFFFFFFFFFFFFFF0uLL];\n if ( v12 != v14 )\n {\n do\n {\n if ( _mm_movemask_epi8(_mm_cmpeq_epi8((__m128i)0LL, *(__m128i *)String)) )\n break;\n String += 16;\n }\n while ( String != v14 );\n }\n while ( String != &v4[MaxCount] && *String )\n ++String;\n return String - v4;\n }\n }\n else\n {\n v5 = (32LL - ((unsigned __int8)String & 0x1F)) & -(__int64)(((unsigned __int8)String & 0x1F) != 0);\n v6 = String;\n if ( MaxCount < v5 )\n v5 = MaxCount;\n v7 = &String[v5];\n if ( v4 != v7 )\n {\n do\n {\n if ( !*v6 )\n break;\n ++v6;\n }\n while ( v6 != v7 );\n }\n v8 = v6 - v4;\n if ( v6 - v4 == v5 )\n {\n String = v6;\n v9 = &v6[(MaxCount - v5) & 0xFFFFFFFFFFFFFFE0uLL];\n if ( v6 != v9 )\n {\n do\n {\n __asm\n {\n vpxor xmm1, xmm1, xmm1\n vpcmpeqb ymm1, ymm1, ymmword ptr [rcx]\n vpmovmskb eax, ymm1\n }\n __asm { vzeroupper }\n if ( _EAX )\n break;\n String += 32;\n }\n while ( String != v9 );\n }\n while ( String != &v4[MaxCount] && *String )\n ++String;\n return String - v4;\n }\n }\n return v8;\n}", "assembly": "; \n; strnlen from 0x1801340e4 to 0x180134234 (336 bytes)\n; \n; 2 xrefs:\n; > common_getenv @ 0x180128cef\n; > unknown_libname_53 @ 0x18012ebc6\n; \n; This function is hookable on this platform!\n; \n; Using BromaIDA 8.0.0 @ https:;github.com/Stazzical/BromaIDA\n; Using bindings at commit ba9f177b at Thu Jul 16 22:52:06 2026 from https:;github.com/geode-sdk/bindings\n; \n\nmov eax, cs:dword_1801B1700 ; +0x0, 0x1801340e4\nmov r9, rcx ; +0x6, 0x1801340ea\ncmp eax, 5 ; +0x9, 0x1801340ed\njl loc_180134189 ; +0xc, 0x1801340f0\nmov r8, rcx ; +0x12, 0x1801340f6\nmov eax, 20h ; ' ' ; +0x15, 0x1801340f9\nand r8d, 1Fh ; +0x1a, 0x1801340fe\nsub rax, r8 ; +0x1e, 0x180134102\nneg r8 ; +0x21, 0x180134105\nsbb r10, r10 ; +0x24, 0x180134108\nand r10, rax ; +0x27, 0x18013410b\nmov rax, r9 ; +0x2a, 0x18013410e\ncmp rdx, r10 ; +0x2d, 0x180134111\ncmovb r10, rdx ; +0x30, 0x180134114\nadd rcx, r10 ; +0x34, 0x180134118\ncmp r9, rcx ; +0x37, 0x18013411b\njz short loc_18013412D ; +0x3a, 0x18013411e\ncmp byte ptr [rax], 0 ; +0x3c, 0x180134120\njz short loc_18013412D ; +0x3f, 0x180134123\ninc rax ; +0x41, 0x180134125\ncmp rax, rcx ; +0x44, 0x180134128\njnz short loc_180134120 ; +0x47, 0x18013412b\nmov rcx, rax ; +0x49, 0x18013412d\nsub rcx, r9 ; +0x4c, 0x180134130\ncmp rcx, r10 ; +0x4f, 0x180134133\njnz loc_180134230 ; +0x52, 0x180134136\nmov r8, rdx ; +0x58, 0x18013413c\nmov rcx, rax ; +0x5b, 0x18013413f\nsub r8, r10 ; +0x5e, 0x180134142\nand r8, 0FFFFFFFFFFFFFFE0h ; +0x61, 0x180134145\nadd r8, rax ; +0x65, 0x180134149\ncmp rax, r8 ; +0x68, 0x18013414c\njz short loc_18013416D ; +0x6b, 0x18013414f\nvpxor xmm1, xmm1, xmm1 ; +0x6d, 0x180134151\nvpcmpeqb ymm1, ymm1, ymmword ptr [rcx] ; +0x71, 0x180134155\nvpmovmskb eax, ymm1 ; +0x75, 0x180134159\ntest eax, eax ; +0x79, 0x18013415d\nvzeroupper ; +0x7b, 0x18013415f\njnz short loc_18013416D ; +0x7e, 0x180134162\nadd rcx, 20h ; ' ' ; +0x80, 0x180134164\ncmp rcx, r8 ; +0x84, 0x180134168\njnz short loc_180134151 ; +0x87, 0x18013416b\nlea rax, [r9+rdx] ; +0x89, 0x18013416d\njmp short loc_18013417F ; +0x8d, 0x180134171\ncmp byte ptr [rcx], 0 ; +0x8f, 0x180134173\njz loc_18013422D ; +0x92, 0x180134176\ninc rcx ; +0x98, 0x18013417c\ncmp rcx, rax ; +0x9b, 0x18013417f\njnz short loc_180134173 ; +0x9e, 0x180134182\njmp loc_18013422D ; +0xa0, 0x180134184\ncmp eax, 1 ; +0xa5, 0x180134189\njl loc_180134217 ; +0xa8, 0x18013418c\nand ecx, 0Fh ; +0xae, 0x180134192\nmov eax, 10h ; +0xb1, 0x180134195\nsub rax, rcx ; +0xb6, 0x18013419a\nneg rcx ; +0xb9, 0x18013419d\nsbb r10, r10 ; +0xbc, 0x1801341a0\nand r10, rax ; +0xbf, 0x1801341a3\nmov rax, r9 ; +0xc2, 0x1801341a6\ncmp rdx, r10 ; +0xc5, 0x1801341a9\ncmovb r10, rdx ; +0xc8, 0x1801341ac\nlea rcx, [r10+r9] ; +0xcc, 0x1801341b0\ncmp r9, rcx ; +0xd0, 0x1801341b4\njz short loc_1801341C6 ; +0xd3, 0x1801341b7\ncmp byte ptr [rax], 0 ; +0xd5, 0x1801341b9\njz short loc_1801341C6 ; +0xd8, 0x1801341bc\ninc rax ; +0xda, 0x1801341be\ncmp rax, rcx ; +0xdd, 0x1801341c1\njnz short loc_1801341B9 ; +0xe0, 0x1801341c4\nmov rcx, rax ; +0xe2, 0x1801341c6\nsub rcx, r9 ; +0xe5, 0x1801341c9\ncmp rcx, r10 ; +0xe8, 0x1801341cc\njnz short loc_180134230 ; +0xeb, 0x1801341cf\nmov r8, rdx ; +0xed, 0x1801341d1\nmov rcx, rax ; +0xf0, 0x1801341d4\nsub r8, r10 ; +0xf3, 0x1801341d7\nxorps xmm1, xmm1 ; +0xf6, 0x1801341da\nand r8, 0FFFFFFFFFFFFFFF0h ; +0xf9, 0x1801341dd\nadd r8, rax ; +0xfd, 0x1801341e1\ncmp rax, r8 ; +0x100, 0x1801341e4\njz short loc_180134202 ; +0x103, 0x1801341e7\nmovdqa xmm0, xmm1 ; +0x105, 0x1801341e9\npcmpeqb xmm0, xmmword ptr [rcx] ; +0x109, 0x1801341ed\npmovmskb eax, xmm0 ; +0x10d, 0x1801341f1\ntest eax, eax ; +0x111, 0x1801341f5\njnz short loc_180134202 ; +0x113, 0x1801341f7\nadd rcx, 10h ; +0x115, 0x1801341f9\ncmp rcx, r8 ; +0x119, 0x1801341fd\njnz short loc_1801341E9 ; +0x11c, 0x180134200\nlea rax, [r9+rdx] ; +0x11e, 0x180134202\njmp short loc_180134210 ; +0x122, 0x180134206\ncmp byte ptr [rcx], 0 ; +0x124, 0x180134208\njz short loc_18013422D ; +0x127, 0x18013420b\ninc rcx ; +0x129, 0x18013420d\ncmp rcx, rax ; +0x12c, 0x180134210\njnz short loc_180134208 ; +0x12f, 0x180134213\njmp short loc_18013422D ; +0x131, 0x180134215\nlea rax, [rcx+rdx] ; +0x133, 0x180134217\ncmp r9, rax ; +0x137, 0x18013421b\njz short loc_18013422D ; +0x13a, 0x18013421e\ncmp byte ptr [rcx], 0 ; +0x13c, 0x180134220\njz short loc_18013422D ; +0x13f, 0x180134223\ninc rcx ; +0x141, 0x180134225\ncmp rcx, rax ; +0x144, 0x180134228\njnz short loc_180134220 ; +0x147, 0x18013422b\nsub rcx, r9 ; +0x149, 0x18013422d\nmov rax, rcx ; +0x14c, 0x180134230\nretn ; +0x14f, 0x180134233", "xrefs": ["common_getenv @ 0x180128cef", "unknown_libname_53 @ 0x18012ebc6"], "is_objc": false, "is_arm32": false, "is_arm64": false, "bida_info": "8.0.0 @ https://github.com/Stazzical/BromaIDA", "bindings_info": "commit ba9f177b at Thu Jul 16 22:52:06 2026 from https://github.com/geode-sdk/bindings"}