librm_mgmt.c File Reference

#include <stdint.h>
#include <realmode.h>

Go to the source code of this file.

Functions

FILE_LICENCE (GPL2_OR_LATER)

uint16_t copy_user_to_rm_stack (userptr_t data, size_t size)

Allocate space on the real-mode stack and copy data there from a user buffer.

void remove_user_from_rm_stack (userptr_t data, size_t size)

Deallocate space on the real-mode stack, optionally copying back data to a user buffer.

PROVIDE_UACCESS_INLINE (librm, phys_to_user)

PROVIDE_UACCESS_INLINE (librm, user_to_phys)

PROVIDE_UACCESS_INLINE (librm, virt_to_user)

PROVIDE_UACCESS_INLINE (librm, user_to_virt)

PROVIDE_UACCESS_INLINE (librm, userptr_add)

PROVIDE_UACCESS_INLINE (librm, memcpy_user)

PROVIDE_UACCESS_INLINE (librm, memmove_user)

PROVIDE_UACCESS_INLINE (librm, memset_user)

PROVIDE_UACCESS_INLINE (librm, strlen_user)

PROVIDE_UACCESS_INLINE (librm, memchr_user)

Function Documentation

FILE_LICENCE ( GPL2_OR_LATER )

uint16_t copy_user_to_rm_stack	(	userptr_t	data,
		size_t	size
	)

Allocate space on the real-mode stack and copy data there from a user buffer.

Parameters:

	data	User buffer
	size	Size of stack data

Return values:

sp

New value of real-mode stack pointer

Definition at line 26 of file librm_mgmt.c.

References memcpy_user(), real_to_user(), rm_sp, and rm_ss.

Referenced by com32_cfarcall().

00026                                                                {
00027         userptr_t rm_stack;
00028         rm_sp -= size;
00029         rm_stack = real_to_user ( rm_ss, rm_sp );
00030         memcpy_user ( rm_stack, 0, data, 0, size );
00031         return rm_sp;
00032 };

void remove_user_from_rm_stack	(	userptr_t	data,
		size_t	size
	)

Deallocate space on the real-mode stack, optionally copying back data to a user buffer.

Parameters:

	data	User buffer
	size	Size of stack data

Definition at line 41 of file librm_mgmt.c.

References memcpy_user(), real_to_user(), rm_sp, and rm_ss.

Referenced by com32_cfarcall().

00041                                                                {
00042         if ( data ) {
00043                 userptr_t rm_stack = real_to_user ( rm_ss, rm_sp );
00044                 memcpy_user ( rm_stack, 0, data, 0, size );
00045         }
00046         rm_sp += size;
00047 };

PROVIDE_UACCESS_INLINE	(	librm	,
		phys_to_user
	)

PROVIDE_UACCESS_INLINE	(	librm	,
		user_to_phys
	)

PROVIDE_UACCESS_INLINE	(	librm	,
		virt_to_user
	)

PROVIDE_UACCESS_INLINE	(	librm	,
		user_to_virt
	)

PROVIDE_UACCESS_INLINE	(	librm	,
		userptr_add
	)

PROVIDE_UACCESS_INLINE	(	librm	,
		memcpy_user
	)

PROVIDE_UACCESS_INLINE	(	librm	,
		memmove_user
	)

PROVIDE_UACCESS_INLINE	(	librm	,
		memset_user
	)

PROVIDE_UACCESS_INLINE	(	librm	,
		strlen_user
	)

PROVIDE_UACCESS_INLINE	(	librm	,
		memchr_user
	)


Functions
	FILE_LICENCE (GPL2_OR_LATER)
uint16_t	copy_user_to_rm_stack (userptr_t data, size_t size)
	Allocate space on the real-mode stack and copy data there from a user buffer.
void	remove_user_from_rm_stack (userptr_t data, size_t size)
	Deallocate space on the real-mode stack, optionally copying back data to a user buffer.
	PROVIDE_UACCESS_INLINE (librm, phys_to_user)
	PROVIDE_UACCESS_INLINE (librm, user_to_phys)
	PROVIDE_UACCESS_INLINE (librm, virt_to_user)
	PROVIDE_UACCESS_INLINE (librm, user_to_virt)
	PROVIDE_UACCESS_INLINE (librm, userptr_add)
	PROVIDE_UACCESS_INLINE (librm, memcpy_user)
	PROVIDE_UACCESS_INLINE (librm, memmove_user)
	PROVIDE_UACCESS_INLINE (librm, memset_user)
	PROVIDE_UACCESS_INLINE (librm, strlen_user)
	PROVIDE_UACCESS_INLINE (librm, memchr_user)