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x86_64 hobby kernel with SMP, VFS, and POSIX process model
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enter_ring3.h
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// MIT License
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//
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// Copyright (c) 2026 Christian Spoo
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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#ifndef _MINIOS_USERSPACE_ENTER_RING3_H_
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#define _MINIOS_USERSPACE_ENTER_RING3_H_
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#include <
miniOS/types.h
>
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struct
thread
;
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void
enter_ring3
(
uint64_t
entry_rip,
uint64_t
user_rsp);
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int
copy_string_array_to_user
(
struct
thread
*t,
char
*
const
*arr,
uint64_t
*user_ptr);
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#endif
copy_string_array_to_user
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
enter_ring3
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,...
thread
Definition
sched.h:96
types.h
uint64_t
unsigned long int uint64_t
Definition
types.h:37
include
miniOS
userspace
enter_ring3.h
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