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Rewrite stage1 dispatch as switch

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khanhduytran0
2026-06-18 10:15:44 +07:00
parent 8b977f97e0
commit d663c77d3c
1 changed files with 138 additions and 155 deletions
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src/payload_377bed/entry1_type0x09_driver_dispatch.m
+138 -155
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@@ -237,189 +237,172 @@ static uint64_t driver_dispatch_stage3_command(struct_krwCtx *krwCtx, int cmd, u
static uint64_t driver_dispatch_stage1_command(struct_krwCtx *krwCtx, int cmd, uint64_t inoutValue)
{
uint64_t v3; // x20
uint64_t v6; // x21
int v14; // w23
int v15; // w0
int v16; // w0
int v21; // w0
int v22; // w22
int v23; // w21
int v24; // w22
unsigned int v25; // w1
bool v26; // w8
int v27; // w20
int v28; // w8
__int64 v50; // [xsp+0h] [xbp-40h] BYREF
int v51; // [xsp+8h] [xbp-38h] BYREF
int v52; // [xsp+Ch] [xbp-34h] BYREF
uint64_t status = 708616;
bool commandSucceeded = false;
v3 = inoutValue;
v6 = 708616;
v14 = 0;
v50 = 0;
LODWORD(v50) = v3;
v52 = 0;
if ( cmd > 264 )
switch ( cmd )
{
if ( cmd > 268 )
case DRIVER_CMD_STAGE1_GET_ROOT_PREFIX:
{
if ( cmd != DRIVER_CMD_STAGE1_CHECK_DISPATCH_KRW )
uint32_t rootPrefixLen = 1024;
int hasRootPrefix = 0;
status = 0;
if ( get_root_prefix_path(krwCtx, (void *)(inoutValue + 16), &rootPrefixLen, &hasRootPrefix) )
{
if ( cmd == DRIVER_CMD_STAGE1_PHYSMAP_ENTRY_CHECK )
{
v15 = physmap_entry_check(krwCtx, *(uint32_t *)v3, *(uint32_t *)(v3 + 4), *(uint64_t *)(v3 + 16));
goto LABEL_79;
}
if ( cmd == DRIVER_CMD_STAGE1_PHYSMAP_SINGLE_CHECK )
{
v15 = physmap_single_check(krwCtx, v3, 20);
LABEL_79:
v14 = v15;
LODWORD(v6) = 0;
}
LABEL_179:
v26 = v14 == 0;
LABEL_180:
return driver_dispatch_finish(v6, !v26);
if ( hasRootPrefix )
*(uint32_t *)inoutValue = 1;
if ( rootPrefixLen )
*(uint32_t *)inoutValue |= 2u;
commandSucceeded = true;
}
break;
}
case DRIVER_CMD_STAGE1_GET_ROOT_STATFS:
{
int rootStatfs = 0;
status = 0;
if ( get_root_statfs(krwCtx, &rootStatfs) )
{
*(uint32_t *)inoutValue = rootStatfs;
commandSucceeded = true;
}
break;
}
case DRIVER_CMD_STAGE1_CHECK_KRW_NECP_STATE:
{
bool necpReady = false;
if ( krwCtx->xnuVersionPacked >> 43 >= 0x44B )
{
v15 = check_dispatch_krw_state(krwCtx, v3 != 0);
goto LABEL_79;
}
LABEL_84:
v14 = 0;
goto LABEL_179;
}
if ( cmd != DRIVER_CMD_STAGE1_CHECK_MOUNT_THREAD )
{
if ( cmd == DRIVER_CMD_STAGE1_WALK_CSBLOB_FOR_PATH )
{
if ( !v3 )
v3 = _CFProcessPath();
v21 = open((const char *)v3, 0, v50);
if ( v21 == -1 )
status = 0;
if ( check_krw_necp_state(krwCtx, &necpReady) )
{
v27 = errno;
v14 = 0;
v28 = errno;
if ( v27 < 0 )
v28 = -v28;
LODWORD(v6) = v28 | 0x40000000;
}
else
{
v22 = v21;
if ( v3 )
LODWORD(v6) = 0;
else
LODWORD(v6) = 708609;
v14 = walk_csblob_chain_for_offset(krwCtx, v21);
close(v22);
*(uint32_t *)inoutValue = necpReady;
commandSucceeded = true;
}
}
goto LABEL_179;
break;
}
v25 = v3 & 0xF;
if ( krwCtx->xnuVersionPacked <= XNU_VERSION_PACKED(8018, 1023, 1023, 1023, 1023) )
case DRIVER_CMD_STAGE1_NECP_CAPABILITIES:
{
if ( v25 > 2 )
{
v14 = 0;
LODWORD(v6) = 708609;
goto LABEL_179;
}
v15 = check_mount_thread_info(krwCtx, v25);
goto LABEL_79;
}
if ( v25 == 1 )
LODWORD(v6) = 708616;
else
LODWORD(v6) = 0;
goto LABEL_178;
}
if ( cmd > -2147483380 )
{
if ( cmd != DRIVER_CMD_STAGE1_CHECK_KRW_NECP_STATE )
{
if ( cmd != DRIVER_CMD_STAGE1_NECP_CAPABILITIES )
goto LABEL_179;
v23 = *(uint32_t *)v3;
v24 = (*(uint32_t *)v3 & 1) != 0 && krwCtx->xnuVersionPacked > XNU_VERSION_PACKED(8018, 1023, 1023, 1023, 1023) && krwCtx->xnuMajorVersion < 8792;
if ( (v23 & 4) != 0 )
uint32_t requestedCaps = *(uint32_t *)inoutValue;
uint32_t supportedCaps = (requestedCaps & 1) != 0
&& krwCtx->xnuVersionPacked > XNU_VERSION_PACKED(8018, 1023, 1023, 1023, 1023)
&& krwCtx->xnuMajorVersion < 8792;
if ( (requestedCaps & 4) != 0 )
{
if ( krw_ctx_has_flag(krwCtx, KRW_CTX_FLAG_CPU_A12_A13_A14_A15_A16_A17_MASK) )
{
if ( check_necp_flag(krwCtx) )
v24 |= 4u;
supportedCaps |= 4u;
}
else if ( krw_ctx_has_flag(krwCtx, KRW_CTX_FLAG_CPU_A11) && krwCtx->xnuMajorVersion > 6152 )
{
v24 |= 4u;
supportedCaps |= 4u;
}
}
if ( (v23 & 2) != 0 )
if ( (requestedCaps & 2) != 0 )
{
if ( krw_ctx_has_flag(krwCtx, KRW_CTX_FLAG_CPU_A12_A13_A14_A15_A16_A17_MASK) )
{
if ( check_necp_flag(krwCtx) )
v24 |= 2u;
supportedCaps |= 2u;
}
else
{
v24 |= 2u;
supportedCaps |= 2u;
}
}
if ( (v23 & 8) != 0 && krwCtx->xnuVersionPacked <= XNU_VERSION_PACKED(8018, 1023, 1023, 1023, 1023) )
v24 |= 8u;
LODWORD(v6) = 0;
*(uint32_t *)v3 = v24;
goto LABEL_178;
}
v16 = 0;
LOBYTE(v51) = 0;
if ( krwCtx->xnuVersionPacked >> 43 >= 0x44B )
{
v16 = check_krw_necp_state(krwCtx, (bool *)&v51);
LODWORD(v6) = 0;
if ( v16 )
LODWORD(v50) = (unsigned __int8)v51;
}
}
else
{
if ( cmd == DRIVER_CMD_STAGE1_GET_ROOT_PREFIX )
{
v51 = 1024;
if ( !(unsigned int)get_root_prefix_path(krwCtx, (void *)(v3 + 16), (uint32_t *)&v51, (int *)&v52) )
{
LODWORD(v6) = 0;
goto LABEL_84;
}
if ( v52 )
*(uint32_t *)v3 = 1;
LODWORD(v6) = 0;
if ( v51 )
*(uint32_t *)v3 |= 2u;
LABEL_178:
v14 = 1;
goto LABEL_179;
}
if ( cmd != DRIVER_CMD_STAGE1_GET_ROOT_STATFS )
goto LABEL_179;
v16 = get_root_statfs(krwCtx, (int *)&v50);
LODWORD(v6) = 0;
}
if ( v16 )
{
v26 = 0;
*(uint32_t *)v3 = v50;
}
else
{
v26 = 1;
}
goto LABEL_180;
}
if ( (requestedCaps & 8) != 0
&& krwCtx->xnuVersionPacked <= XNU_VERSION_PACKED(8018, 1023, 1023, 1023, 1023) )
{
supportedCaps |= 8u;
}
*(uint32_t *)inoutValue = supportedCaps;
status = 0;
commandSucceeded = true;
break;
}
case DRIVER_CMD_STAGE1_CHECK_MOUNT_THREAD:
{
uint32_t mountThreadIndex = inoutValue & 0xF;
if ( krwCtx->xnuVersionPacked <= XNU_VERSION_PACKED(8018, 1023, 1023, 1023, 1023) )
{
if ( mountThreadIndex > 2 )
{
status = 708609;
break;
}
status = 0;
commandSucceeded = check_mount_thread_info(krwCtx, mountThreadIndex);
break;
}
status = mountThreadIndex == 1 ? 708616 : 0;
commandSucceeded = true;
break;
}
case DRIVER_CMD_STAGE1_WALK_CSBLOB_FOR_PATH:
{
uint64_t path = inoutValue;
if ( !path )
path = (uint64_t)_CFProcessPath();
int fd = open((const char *)path, 0, (mode_t)inoutValue);
if ( fd == -1 )
{
int err = errno;
if ( err < 0 )
err = -err;
status = (uint32_t)err | 0x40000000u;
break;
}
status = path ? 0 : 708609;
commandSucceeded = walk_csblob_chain_for_offset(krwCtx, fd);
close(fd);
break;
}
case DRIVER_CMD_STAGE1_CHECK_DISPATCH_KRW:
if ( krwCtx->xnuVersionPacked >> 43 >= 0x44B )
{
status = 0;
commandSucceeded = check_dispatch_krw_state(krwCtx, inoutValue != 0);
}
break;
case DRIVER_CMD_STAGE1_PHYSMAP_SINGLE_CHECK:
status = 0;
commandSucceeded = physmap_single_check(krwCtx, inoutValue, 20);
break;
case DRIVER_CMD_STAGE1_PHYSMAP_ENTRY_CHECK:
status = 0;
commandSucceeded = physmap_entry_check(
krwCtx,
*(uint32_t *)inoutValue,
*(uint32_t *)(inoutValue + 4),
*(uint64_t *)(inoutValue + 16));
break;
default:
break;
}
return driver_dispatch_finish(status, commandSucceeded);
}