diff options
Diffstat (limited to 'c/src/lib/libbsp/i386/shared/realmode_int/realmode_int.h')
-rw-r--r-- | c/src/lib/libbsp/i386/shared/realmode_int/realmode_int.h | 97 |
1 files changed, 0 insertions, 97 deletions
diff --git a/c/src/lib/libbsp/i386/shared/realmode_int/realmode_int.h b/c/src/lib/libbsp/i386/shared/realmode_int/realmode_int.h deleted file mode 100644 index e8a1e36d01..0000000000 --- a/c/src/lib/libbsp/i386/shared/realmode_int/realmode_int.h +++ /dev/null @@ -1,97 +0,0 @@ -/** - * @file realmode_int.h - * - * @ingroup i386_shared - * - * @brief Definitioins supporting real mode interrupt calls. - * - * Interface allows calling given interrupt number with content of the - * registers defined. For passing or receiving higher amounts of the data - * there is a buffer accessible from real mode available. Real mode pointer - * to this buffer is passed to the interrupt in the registers. - */ - -/* - * Copyright (C) 2014 Jan Doležal (dolezj21@fel.cvut.cz) - * CTU in Prague. - * - * The license and distribution terms for this file may be - * found in the file LICENSE in this distribution or at - * http://www.rtems.org/license/LICENSE. - */ - -#ifndef _REALMODE_INT_H -#define _REALMODE_INT_H - -#include <rtems/score/cpu.h> -#include <stdint.h> - -#ifndef ASM /* ASM */ - -#ifdef __cplusplus -extern "C" { -#endif /* __cplusplus */ - -/* --- BIOS service interrupt number --- */ -/* number of interrupt servicing video functions */ -#define INTERRUPT_NO_VIDEO_SERVICES 0x10 - -/** - * @brief Used for passing and retrieving registers content to/from real mode - * interrupt call. - */ -typedef struct { - uint32_t reg_eax; - uint32_t reg_ebx; - uint32_t reg_ecx; - uint32_t reg_edx; - uint32_t reg_esi; - uint32_t reg_edi; - uint16_t reg_ds; - uint16_t reg_es; - uint16_t reg_fs; - uint16_t reg_gs; -} RTEMS_PACKED i386_realmode_interrupt_registers; - -/** - * @brief Returns buffer and its size usable with real mode interrupt call. - * - * Provides position to real mode buffer. It is buffer - * accessible from real mode context - it is located below - * address ~0x100000 in order for it to be accessible - * This buffer is meant to be pointed to by segReg:GenPurpReg - * and through this get bigger portion of an information to/from - * interrupt service routine than just by using register. - * - * @param[out] size pointer to variable, where the size of buffer - * will be filled - * @retval pointer to buffer - */ -extern void *i386_get_default_rm_buffer(uint16_t *size); - -/** - * @brief Call to real mode interrupt with specified int NO and processor - * registers. - * - * This function allows calling interrupts in real mode and to set processor - * registers as desired before interrupt call is made and to retrieve the - * registers content after call was made. - * - * @param[in] interrupt_number interrupt number to be called - * @param[in] ir pointer to structure containing registers to be passed to - * interrupt and to retrieve register content after call was made. - * @retval 0 call failed (GDT too small or pagin is on) - * @retval 1 call successful - */ -extern int i386_real_interrupt_call( - uint8_t interrupt_number, - i386_realmode_interrupt_registers *ir -); - -#ifdef __cplusplus -} -#endif /* __cplusplus */ - -#endif /* ASM */ - -#endif /* _REALMODE_INT_H */ |