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Kernel: Implement Thread trampolines for x86_32

This commit is contained in:
Bananymous 2024-03-26 19:42:14 +02:00
parent c12d1e9bd9
commit 96babec22a
1 changed files with 25 additions and 2 deletions
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27
kernel/arch/i686/Thread.S
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@ -7,12 +7,35 @@ read_ip:
# void start_thread(uint32_t sp, uint32_t ip)
.global start_thread
start_thread:
ud2
movl 8(%esp), %edi # ip
movl 4(%esp), %esp # sp
# STACK LAYOUT
# NULL
# thread ptr
# &Thread::on_exit
# data
xorl %ebp, %ebp
sti
call *%edi
movl 4(%esp), %edi # &Thread::on_exit
movl 8(%esp), %eax # thread ptr
movl %eax, (%esp)
call *%edi
# void continue_thread(uint32_t sp, uint32_t ip)
.global continue_thread
continue_thread:
ud2
movl 8(%esp), %edi # ip
movl 4(%esp), %esp # sp
xorl %eax, %eax
jmp *%edi
# void thread_userspace_trampoline(uint32_t sp, uint32_t ip, int argc, char** argv, char** envp)
.global thread_userspace_trampoline