miniOS
x86_64 hobby kernel with SMP, VFS, and POSIX process model
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enter_ring3.h
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1// MIT License
2//
3// Copyright (c) 2026 Christian Spoo
4//
5// Permission is hereby granted, free of charge, to any person obtaining a copy
6// of this software and associated documentation files (the "Software"), to deal
7// in the Software without restriction, including without limitation the rights
8// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
9// copies of the Software, and to permit persons to whom the Software is
10// furnished to do so, subject to the following conditions:
11//
12// The above copyright notice and this permission notice shall be included in all
13// copies or substantial portions of the Software.
14//
15// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21// SOFTWARE.
22
29
30#ifndef _MINIOS_USERSPACE_ENTER_RING3_H_
31#define _MINIOS_USERSPACE_ENTER_RING3_H_
32
33#include <miniOS/types.h>
34
35struct thread;
36
47void enter_ring3(uint64_t entry_rip, uint64_t user_rsp);
48
61int copy_string_array_to_user(struct thread *t, char *const *arr, uint64_t *user_ptr);
62
64
65#endif
int copy_string_array_to_user(struct thread *t, char *const *arr, uint64_t *user_ptr)
Copies each string to the user stack, builds a pointer array below the strings, and writes the addres...
Definition enter_ring3.c:31
void enter_ring3(uint64_t entry_rip, uint64_t user_rsp)
Builds an IRETQ stack frame (SS, RSP, RFLAGS=0x202, CS=user_cs, RIP) and executes IRETQ,...
Definition sched.h:96
unsigned long int uint64_t
Definition types.h:37