The Header file for userland/userspace. More...

#include <basics.h>
#include <syscalls.h>

Include dependency graph for userland.h:

This graph shows which files directly or indirectly include this file:

Classes
struct	glibc_128bits_t
union	glibc_dtv_t
struct	glibc_tcb_head_t
struct	glibc_tls_block_t
struct	auxv_pair_t

Macros
#define	USER_STACK_SIZE (16 * 1024)
#define	USER_HEAP_SIZE (1 * 1024 * 1024)
#define	USER_MMAP_SIZE (4 * 1024 * 1024)
#define	USER_CODE_VADDR 0x0000400000000000ULL
#define	USER_HEAP_VADDR 0x0000400010000000ULL
#define	USER_MMAP_VADDR (USER_HEAP_VADDR + USER_HEAP_SIZE)
#define	USER_TLS_VADDR (USER_MMAP_VADDR + USER_MMAP_SIZE)
#define	USER_TLS_REGION_SIZE (16 * 1024)
#define	USER_PHDR_VADDR (USER_TLS_VADDR + USER_TLS_REGION_SIZE)
#define	USER_STACK_TOP 0x00007FFFFFFFF000ULL
#define	LINUX_AT_NULL 0
#define	LINUX_AT_PHDR 3
#define	LINUX_AT_PHENT 4
#define	LINUX_AT_PHNUM 5
#define	LINUX_AT_PAGESZ 6
#define	LINUX_AT_BASE 7
#define	LINUX_AT_FLAGS 8
#define	LINUX_AT_ENTRY 9
#define	LINUX_AT_UID 11
#define	LINUX_AT_EUID 12
#define	LINUX_AT_GID 13
#define	LINUX_AT_EGID 14
#define	LINUX_AT_PLATFORM 15
#define	LINUX_AT_HWCAP 16
#define	LINUX_AT_HWCAP2 26
#define	LINUX_AT_CLKTCK 17
#define	LINUX_AT_SECURE 23
#define	LINUX_AT_RANDOM 25
#define	LINUX_AT_EXECFN 31
#define	IA32_FS_BASE_MSR 0xC0000100
#define	USER_AUXV_MAX 18

Functions
void	enter_userland_at (uint64_t entry_point)
int	userland_exec (const char path, int argc, const char const argv, const char const *envp)
void	userland_heap_init (void)
uint64_t	userland_brk (uint64_t requested_break)
uint64_t	userland_mmap_anon (uint64_t length)
bool	userland_prepare_exit (syscall_frame_t *frame, uint64_t exit_code)
bool	userland_is_running (void)
void	userland_abort_from_exception (uint64_t int_no, uint64_t err_code, uint64_t fault_rip) __attribute__((noreturn))
void	sh_exec (void)

Detailed Description

The Header file for userland/userspace.

Author: Pradosh (prado.nosp@m.shga.nosp@m.me@gm.nosp@m.ail..nosp@m.com)

Version: 0.1

Date: 2025-10-03

Copyright: Copyright (c) Pradosh 2025

Definition in file userland.h.

Macro Definition Documentation

◆ IA32_FS_BASE_MSR

#define IA32_FS_BASE_MSR 0xC0000100

Definition at line 48 of file userland.h.

◆ LINUX_AT_BASE

#define LINUX_AT_BASE 7

Definition at line 34 of file userland.h.

◆ LINUX_AT_CLKTCK

#define LINUX_AT_CLKTCK 17

Definition at line 44 of file userland.h.

◆ LINUX_AT_EGID

#define LINUX_AT_EGID 14

Definition at line 40 of file userland.h.

◆ LINUX_AT_ENTRY

#define LINUX_AT_ENTRY 9

Definition at line 36 of file userland.h.

◆ LINUX_AT_EUID

#define LINUX_AT_EUID 12

Definition at line 38 of file userland.h.

◆ LINUX_AT_EXECFN

#define LINUX_AT_EXECFN 31

Definition at line 47 of file userland.h.

◆ LINUX_AT_FLAGS

#define LINUX_AT_FLAGS 8

Definition at line 35 of file userland.h.

◆ LINUX_AT_GID

#define LINUX_AT_GID 13

Definition at line 39 of file userland.h.

◆ LINUX_AT_HWCAP

#define LINUX_AT_HWCAP 16

Definition at line 42 of file userland.h.

◆ LINUX_AT_HWCAP2

#define LINUX_AT_HWCAP2 26

Definition at line 43 of file userland.h.

◆ LINUX_AT_NULL

#define LINUX_AT_NULL 0

Definition at line 29 of file userland.h.

◆ LINUX_AT_PAGESZ

#define LINUX_AT_PAGESZ 6

Definition at line 33 of file userland.h.

◆ LINUX_AT_PHDR

#define LINUX_AT_PHDR 3

Definition at line 30 of file userland.h.

◆ LINUX_AT_PHENT

#define LINUX_AT_PHENT 4

Definition at line 31 of file userland.h.

◆ LINUX_AT_PHNUM

#define LINUX_AT_PHNUM 5

Definition at line 32 of file userland.h.

◆ LINUX_AT_PLATFORM

#define LINUX_AT_PLATFORM 15

Definition at line 41 of file userland.h.

◆ LINUX_AT_RANDOM

#define LINUX_AT_RANDOM 25

Definition at line 46 of file userland.h.

◆ LINUX_AT_SECURE

#define LINUX_AT_SECURE 23

Definition at line 45 of file userland.h.

◆ LINUX_AT_UID

#define LINUX_AT_UID 11

Definition at line 37 of file userland.h.

◆ USER_AUXV_MAX

#define USER_AUXV_MAX 18

Definition at line 49 of file userland.h.

◆ USER_CODE_VADDR

#define USER_CODE_VADDR 0x0000400000000000ULL

Definition at line 21 of file userland.h.

◆ USER_HEAP_SIZE

#define USER_HEAP_SIZE (1 * 1024 * 1024)

Definition at line 18 of file userland.h.

◆ USER_HEAP_VADDR

#define USER_HEAP_VADDR 0x0000400010000000ULL

Definition at line 22 of file userland.h.

◆ USER_MMAP_SIZE

#define USER_MMAP_SIZE (4 * 1024 * 1024)

Definition at line 19 of file userland.h.

◆ USER_MMAP_VADDR

#define USER_MMAP_VADDR (USER_HEAP_VADDR + USER_HEAP_SIZE)

Definition at line 23 of file userland.h.

◆ USER_PHDR_VADDR

#define USER_PHDR_VADDR (USER_TLS_VADDR + USER_TLS_REGION_SIZE)

Definition at line 26 of file userland.h.

◆ USER_STACK_SIZE

#define USER_STACK_SIZE (16 * 1024)

Definition at line 17 of file userland.h.

◆ USER_STACK_TOP

#define USER_STACK_TOP 0x00007FFFFFFFF000ULL

Definition at line 27 of file userland.h.

◆ USER_TLS_REGION_SIZE

#define USER_TLS_REGION_SIZE (16 * 1024)

Definition at line 25 of file userland.h.

◆ USER_TLS_VADDR

#define USER_TLS_VADDR (USER_MMAP_VADDR + USER_MMAP_SIZE)

Definition at line 24 of file userland.h.

Classes

Macros

Functions