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Kernel: Remove manual STAC/CLAC in create_thread()

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This commit is contained in:
Andreas Kling 2020-01-12 11:51:31 +01:00
parent a885719af5
commit 955034e86e
1 changed files with 9 additions and 8 deletions
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17
Kernel/Process.cpp
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@ -3419,21 +3419,22 @@ void Process::send_signal(u8 signal, Process* sender)
thread->send_signal(signal, sender); thread->send_signal(signal, sender);
} }
int Process::sys$create_thread(void* (*entry)(void*), void* argument, const Syscall::SC_create_thread_params* params) int Process::sys$create_thread(void* (*entry)(void*), void* argument, const Syscall::SC_create_thread_params* user_params)
{ {
REQUIRE_PROMISE(thread); REQUIRE_PROMISE(thread);
if (!validate_read((const void*)entry, sizeof(void*))) if (!validate_read((const void*)entry, sizeof(void*)))
return -EFAULT; return -EFAULT;
if (!validate_read_typed(params)) if (!validate_read_typed(user_params))
return -EFAULT; return -EFAULT;
stac(); Syscall::SC_create_thread_params params;
unsigned detach_state = params->m_detach_state; copy_from_user(&params, user_params);
int schedule_priority = params->m_schedule_priority;
void* stack_location = params->m_stack_location; unsigned detach_state = params.m_detach_state;
unsigned stack_size = params->m_stack_size; int schedule_priority = params.m_schedule_priority;
clac(); void* stack_location = params.m_stack_location;
unsigned stack_size = params.m_stack_size;
if (!validate_write(stack_location, stack_size)) if (!validate_write(stack_location, stack_size))
return -EFAULT; return -EFAULT;