diff options
Diffstat (limited to 'gpxe/src/arch/i386/include/librm.h')
| -rw-r--r-- | gpxe/src/arch/i386/include/librm.h | 206 |
1 files changed, 0 insertions, 206 deletions
diff --git a/gpxe/src/arch/i386/include/librm.h b/gpxe/src/arch/i386/include/librm.h deleted file mode 100644 index f193f5e3..00000000 --- a/gpxe/src/arch/i386/include/librm.h +++ /dev/null @@ -1,206 +0,0 @@ -#ifndef LIBRM_H -#define LIBRM_H - -FILE_LICENCE ( GPL2_OR_LATER ); - -/* Segment selectors as used in our protected-mode GDTs. - * - * Don't change these unless you really know what you're doing. - */ - -#define VIRTUAL_CS 0x08 -#define VIRTUAL_DS 0x10 -#define PHYSICAL_CS 0x18 -#define PHYSICAL_DS 0x20 -#define REAL_CS 0x28 -#define REAL_DS 0x30 -#if 0 -#define LONG_CS 0x38 -#define LONG_DS 0x40 -#endif - -#ifndef ASSEMBLY - -#ifdef UACCESS_LIBRM -#define UACCESS_PREFIX_librm -#else -#define UACCESS_PREFIX_librm __librm_ -#endif - -/* Variables in librm.S */ -extern unsigned long virt_offset; - -/** - * Convert physical address to user pointer - * - * @v phys_addr Physical address - * @ret userptr User pointer - */ -static inline __always_inline userptr_t -UACCESS_INLINE ( librm, phys_to_user ) ( unsigned long phys_addr ) { - return ( phys_addr - virt_offset ); -} - -/** - * Convert user buffer to physical address - * - * @v userptr User pointer - * @v offset Offset from user pointer - * @ret phys_addr Physical address - */ -static inline __always_inline unsigned long -UACCESS_INLINE ( librm, user_to_phys ) ( userptr_t userptr, off_t offset ) { - return ( userptr + offset + virt_offset ); -} - -static inline __always_inline userptr_t -UACCESS_INLINE ( librm, virt_to_user ) ( volatile const void *addr ) { - return trivial_virt_to_user ( addr ); -} - -static inline __always_inline void * -UACCESS_INLINE ( librm, user_to_virt ) ( userptr_t userptr, off_t offset ) { - return trivial_user_to_virt ( userptr, offset ); -} - -static inline __always_inline userptr_t -UACCESS_INLINE ( librm, userptr_add ) ( userptr_t userptr, off_t offset ) { - return trivial_userptr_add ( userptr, offset ); -} - -static inline __always_inline void -UACCESS_INLINE ( librm, memcpy_user ) ( userptr_t dest, off_t dest_off, - userptr_t src, off_t src_off, - size_t len ) { - trivial_memcpy_user ( dest, dest_off, src, src_off, len ); -} - -static inline __always_inline void -UACCESS_INLINE ( librm, memmove_user ) ( userptr_t dest, off_t dest_off, - userptr_t src, off_t src_off, - size_t len ) { - trivial_memmove_user ( dest, dest_off, src, src_off, len ); -} - -static inline __always_inline void -UACCESS_INLINE ( librm, memset_user ) ( userptr_t buffer, off_t offset, - int c, size_t len ) { - trivial_memset_user ( buffer, offset, c, len ); -} - -static inline __always_inline size_t -UACCESS_INLINE ( librm, strlen_user ) ( userptr_t buffer, off_t offset ) { - return trivial_strlen_user ( buffer, offset ); -} - -static inline __always_inline off_t -UACCESS_INLINE ( librm, memchr_user ) ( userptr_t buffer, off_t offset, - int c, size_t len ) { - return trivial_memchr_user ( buffer, offset, c, len ); -} - - -/****************************************************************************** - * - * Access to variables in .data16 and .text16 - * - */ - -extern char *data16; -extern char *text16; - -#define __data16( variable ) \ - __attribute__ (( section ( ".data16" ) )) \ - _data16_ ## variable __asm__ ( #variable ) - -#define __data16_array( variable, array ) \ - __attribute__ (( section ( ".data16" ) )) \ - _data16_ ## variable array __asm__ ( #variable ) - -#define __bss16( variable ) \ - __attribute__ (( section ( ".bss16" ) )) \ - _data16_ ## variable __asm__ ( #variable ) - -#define __bss16_array( variable, array ) \ - __attribute__ (( section ( ".bss16" ) )) \ - _data16_ ## variable array __asm__ ( #variable ) - -#define __text16( variable ) \ - __attribute__ (( section ( ".text16.data" ) )) \ - _text16_ ## variable __asm__ ( #variable ) - -#define __text16_array( variable, array ) \ - __attribute__ (( section ( ".text16.data" ) )) \ - _text16_ ## variable array __asm__ ( #variable ) - -#define __use_data16( variable ) \ - ( * ( ( typeof ( _data16_ ## variable ) * ) \ - & ( data16 [ ( size_t ) & ( _data16_ ## variable ) ] ) ) ) - -#define __use_text16( variable ) \ - ( * ( ( typeof ( _text16_ ## variable ) * ) \ - & ( text16 [ ( size_t ) & ( _text16_ ## variable ) ] ) ) ) - -#define __from_data16( pointer ) \ - ( ( unsigned int ) \ - ( ( ( void * ) (pointer) ) - ( ( void * ) data16 ) ) ) - -#define __from_text16( pointer ) \ - ( ( unsigned int ) \ - ( ( ( void * ) (pointer) ) - ( ( void * ) text16 ) ) ) - -/* Variables in librm.S, present in the normal data segment */ -extern uint16_t rm_sp; -extern uint16_t rm_ss; -extern uint16_t __data16 ( rm_cs ); -#define rm_cs __use_data16 ( rm_cs ) -extern uint16_t __text16 ( rm_ds ); -#define rm_ds __use_text16 ( rm_ds ) - -/* Functions that librm expects to be able to link to. Included here - * so that the compiler will catch prototype mismatches. - */ -extern void gateA20_set ( void ); - -/** - * Convert segment:offset address to user buffer - * - * @v segment Real-mode segment - * @v offset Real-mode offset - * @ret buffer User buffer - */ -static inline __always_inline userptr_t -real_to_user ( unsigned int segment, unsigned int offset ) { - return ( phys_to_user ( ( segment << 4 ) + offset ) ); -} - -extern uint16_t copy_user_to_rm_stack ( userptr_t data, size_t size ); -extern void remove_user_from_rm_stack ( userptr_t data, size_t size ); - -/* TEXT16_CODE: declare a fragment of code that resides in .text16 */ -#define TEXT16_CODE( asm_code_str ) \ - ".section \".text16\", \"ax\", @progbits\n\t" \ - ".code16\n\t" \ - asm_code_str "\n\t" \ - ".code32\n\t" \ - ".previous\n\t" - -/* REAL_CODE: declare a fragment of code that executes in real mode */ -#define REAL_CODE( asm_code_str ) \ - "pushl $1f\n\t" \ - "call real_call\n\t" \ - "addl $4, %%esp\n\t" \ - TEXT16_CODE ( "\n1:\n\t" \ - asm_code_str \ - "\n\t" \ - "ret\n\t" ) - -/* PHYS_CODE: declare a fragment of code that executes in flat physical mode */ -#define PHYS_CODE( asm_code_str ) \ - "call _virt_to_phys\n\t" \ - asm_code_str \ - "call _phys_to_virt\n\t" - -#endif /* ASSEMBLY */ - -#endif /* LIBRM_H */ |