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|
// MERIT TA command surface, decompiled with restored names, prototypes and types.
// Source: psp_out/versions_win/ta_0.7.0.1_444eceee.bin
// Handlers resolved from fw/cmdmaps/merit.json; loc_* labels mapped to their
// containing function. Generated by fw/ta_surface.py.
// ================ cmd 0x1 @ 0x401900 ================
int __fastcall merit_cmd01(void *ctx, struct ta_params *params)
{
int v2; // r2
_BYTE *v3; // r3
int v4; // r1
v2 = 1;
v3 = (char *)&(*off_401CE0)[64] + 1;
v4 = dword_40192C;
while ( v2 != 65 )
{
if ( *v3 == 0 )
{
*v3 = 1;
*((_DWORD *)ctx + 1033) = v2;
return 0;
}
v3 += 257;
++v2;
}
return v4;
}
// ================ cmd 0x6 @ 0x401930 ================
int __fastcall merit_cmd06(void *ctx, struct ta_params *params)
{
int v2; // r0
int v3; // r0
v2 = *((_DWORD *)ctx + 4);
if ( (unsigned int)(v2 - 1) > 0x3F )
return 259;
v3 = 257 * v2;
if ( *((_BYTE *)off_401CE0 + v3) == 0 )
return 259;
if ( *((_BYTE *)off_401CE0 + v3) == 1 )
merit_lib_zero_fill_bytes(dst: (char *)off_401CE0 + v3, len: 0x101u);
return 0;
}
// ================ cmd 0x4 @ 0x40195c ================
// Slot lookup, CORRECTLY bounded (checked, negative).
//
// v5 = *(params+16) host index
// guard (v5 - 1) <= 0x3F -> v5 in [1,64]
// slot presence byte at off_401CE0 + 257*v5, required != 0 (liveness IS checked)
//
// The 1-based range is right, not an off-by-one: the allocator merit_cmd01 walks v1 = 1
// while v1 != 65 with v2 += 257 starting at base+257, so valid slots are 1..64, and
// merit_TA_CreateEntryPoint zero-fills 0x4141 = 257*65 bytes, i.e. the whole array
// including the unused slot 0. So index 64 is the last valid slot and the guard matches
// the allocator exactly.
//
// Flagged by fw/ta_liveness_audit.py only because its liveness test is '!= 0' rather than
// a compare against a small constant; recorded so the lead is not re-opened.
int __fastcall merit_cmd04(void *ctx, struct ta_params *params)
{
int v2; // r7
int *v3; // r8
_DWORD *v4; // r6
int v6; // r0
int result; // r0
char *v8; // r5
int v9; // r0
int v10; // r1
_BYTE *v11; // r5
unsigned int dst[4]; // [sp+8h] [bp-104h] BYREF
int v13; // [sp+28h] [bp-E4h]
int v14; // [sp+2Ch] [bp-E0h]
int v15; // [sp+108h] [bp-4h]
v4 = (_DWORD *)off_401BD8;
v15 = *(_DWORD *)off_401BD8;
v6 = *((_DWORD *)ctx + 4);
if ( (unsigned int)(v6 - 1) <= 0x3F && (v3 = (int *)off_401CE0, v2 = 257 * v6, *((_BYTE *)off_401CE0 + 257 * v6) != 0) )
{
merit_lib_zero_fill_words(dst, len: 0x100u);
if ( merit_cmd04__h1(ctx: (char *)ctx + 20, params: *((struct ta_params **)ctx + 69)) == 0 )
goto LABEL_8;
result = 267;
}
else
{
result = 259;
}
while ( *v4 != v15 )
{
((void (__fastcall *)(int, int))loc_40202C)(a1: result, a2: *v4 - v15);
LABEL_8:
v8 = (char *)v3 + v2;
if ( merit_lib_52b900d8_88(a1: (int)v3 + v2 + 1, a2: (int)dst, a3: 16) != 0 )
{
result = 560;
}
else
{
merit_lib_thunk_tailjump(a1: (int)(v8 + 17));
v9 = v13;
v10 = v14;
v8[33] = v13;
v11 = v8 + 33;
v11[4] = v10;
v11 += 4;
v11[3] = HIBYTE(v10);
v11[2] = BYTE2(v10);
v11[1] = BYTE1(v10);
*(v11 - 1) = HIBYTE(v9);
*(v11 - 2) = BYTE2(v9);
*(v11 - 3) = BYTE1(v9);
result = 0;
}
}
return result;
}
// ================ cmd 0x2 @ 0x401a18 ================
int __fastcall merit_cmd02(void *ctx, struct ta_params *params)
{
int v4; // r0
int v5; // r1
int v6; // [sp+0h] [bp-28h] BYREF
merit_lib_zero_fill_words(dst: &v6, len: 0x28u);
if ( merit_asd_rpc_200(arg: (unsigned int)&v6) != 0 )
return 576;
v4 = *((_DWORD *)ctx + 4);
if ( v4 == 2 )
{
*off_401CB8 = 2;
v5 = 3947;
goto LABEL_7;
}
if ( v4 == 1 )
{
*off_401CB8 = 1;
v5 = 3944;
LABEL_7:
*((_DWORD *)ctx + 1033) = v5;
return 0;
}
return 544;
}
// ================ cmd 0x5 @ 0x401a90 ================
int __fastcall merit_cmd05(void *ctx, struct ta_params *params)
{
_DWORD *v2; // r8
void *v4; // r4
int *v5; // r7
int v6; // r6
unsigned __int8 *v7; // r9
int result; // r0
int v9; // r7
int *v10; // r11
int v11; // r0
int v12; // r10
bool v13; // zf
int v14; // r3
int v15; // r6
int v16; // r7
_OWORD *v17; // r5
int v18; // r0
__int128 v19; // [sp+8h] [bp-14h] BYREF
int v20; // [sp+18h] [bp-4h]
v2 = (_DWORD *)off_401BD8;
v20 = *(_DWORD *)off_401BD8;
v4 = *((void **)ctx + 4);
if ( (char *)v4 - 1 <= (char *)0x3F
&& (v5 = (int *)off_401CE0, v6 = 257 * (_DWORD)v4, *((_BYTE *)off_401CE0 + 257 * (_DWORD)v4) != 0) )
{
if ( merit_cmd05__h1(ctx: v4, params: (struct ta_params *)((char *)ctx + 20)) == 0 )
goto LABEL_10;
v7 = (unsigned __int8 *)v5 + v6 + 33;
if ( *((_DWORD *)ctx + 17) == (*v7
| (*((unsigned __int8 *)v5 + v6 + 34) << 8)
| ((*((unsigned __int8 *)v5 + v6 + 35) | (*((unsigned __int8 *)v5 + v6 + 36) << 8)) << 16)) )
{
if ( merit_lib_52b900d8_88(a1: off_401BDC, a2: (int)ctx + 52, a3: 16) == 0 )
{
v9 = *((_DWORD *)ctx + 19);
v10 = (int *)off_401BE0;
v11 = 0;
while ( 1 )
{
v12 = v11 + 16;
if ( v11 == 128 )
break;
v13 = merit_lib_52b900d8_88(a1: (int)v10 + v11, a2: (int)ctx + 80, a3: v9) == 0;
v11 = v12;
if ( v13 )
{
v14 = *((_DWORD *)ctx + 10);
v15 = *((_DWORD *)ctx + 11);
v16 = *((_DWORD *)ctx + 12);
*((_DWORD *)ctx + 1038) = *((_DWORD *)ctx + 9);
*((_DWORD *)ctx + 1039) = v14;
*((_DWORD *)ctx + 1040) = v15;
*((_DWORD *)ctx + 1041) = v16;
*((_DWORD *)ctx + 1042) = dword_401BE4;
*((_DWORD *)ctx + 1037) = 20;
merit_lib_zero_fill_words(dst: (char *)ctx + 4172, len: 0xFD8u);
v17 = (char *)ctx + 4132;
if ( ((int (__fastcall *)(_OWORD *, int, __int128 *, void *))loc_4012FC)(
a1: v17,
a2: 4096,
a3: &v19,
a4: v4) != 0 )
{
result = 266;
}
else
{
*v17 = v19;
v18 = ((*v7)++ | (v7[1] << 8) | ((v7[2] | (v7[3] << 8)) << 16)) + 1;
v7[2] = BYTE2(v18);
v7[3] = HIBYTE(v18);
v7[1] = BYTE1(v18);
result = 0;
}
goto LABEL_8;
}
}
}
result = 262;
}
else
{
result = 260;
}
}
else
{
result = 259;
}
LABEL_8:
while ( *v2 != v20 )
{
((void (__fastcall *)(int, int))loc_40202C)(a1: result, a2: *v2 - v20);
LABEL_10:
result = 261;
}
return result;
}
// ================ cmd 0x3 @ 0x401be8 ================
int __fastcall merit_cmd03(void *ctx, struct ta_params *params)
{
int v3; // r5
int *v4; // r7
int v5; // r5
char *v7; // r0
int v8; // [sp+0h] [bp-2Ch] BYREF
v3 = *((_DWORD *)ctx + 4);
merit_lib_zero_fill_words(dst: &v8, len: 0x28u);
if ( (unsigned int)(v3 - 1) > 0x3F )
return 259;
v4 = (int *)off_401CE0;
v5 = 257 * v3;
if ( *((_BYTE *)off_401CE0 + v5) == 0 )
return 259;
if ( merit_asd_rpc_200(arg: (unsigned int)&v8) != 0 )
return 576;
merit_sysdrv_rpc_35(a1: (int)v4 + v5 + 1, a2: 16);
*((_DWORD *)ctx + 1037) = 16;
merit_lib_thunk_tailjump(a1: (int)ctx + 4132);
if ( *off_401CB8 == 2 )
{
*((_DWORD *)ctx + 2025) = 3947;
v7 = (char *)ctx + 4152;
goto LABEL_10;
}
if ( *off_401CB8 == 1 )
{
*((_DWORD *)ctx + 2025) = 3944;
v7 = (char *)ctx + 4152;
LABEL_10:
merit_lib_thunk_tailjump(a1: (int)v7);
}
return 0;
}
|
