diff options
Diffstat (limited to 'contrib/syslinux/latest/com32/include/com32.h')
| -rw-r--r-- | contrib/syslinux/latest/com32/include/com32.h | 197 |
1 files changed, 0 insertions, 197 deletions
diff --git a/contrib/syslinux/latest/com32/include/com32.h b/contrib/syslinux/latest/com32/include/com32.h deleted file mode 100644 index 6b14208..0000000 --- a/contrib/syslinux/latest/com32/include/com32.h +++ /dev/null @@ -1,197 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2002-2009 H. Peter Anvin - All Rights Reserved - * Copyright 2009-2010 Intel Corporation; author: H. Peter Anvin - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * com32.h - * - * Common declarations for com32 programs. - */ - -#ifndef _COM32_H -#define _COM32_H - -#include <stdint.h> -#include <stdbool.h> -#include <stddef.h> -#include <klibc/compiler.h> /* For __cdecl */ - -/* - * This structure defines the register frame used by the - * system call interface. - * - * The syscall interface is: - * - * __intcall(interrupt_#, source_regs, return_regs) - * __farcall(seg, offs, source_regs, return_regs) - */ -typedef union { - uint32_t l; - uint16_t w[2]; - uint8_t b[4]; -} reg32_t; - -typedef struct { - uint16_t gs; /* Offset 0 */ - uint16_t fs; /* Offset 2 */ - uint16_t es; /* Offset 4 */ - uint16_t ds; /* Offset 6 */ - - reg32_t edi; /* Offset 8 */ - reg32_t esi; /* Offset 12 */ - reg32_t ebp; /* Offset 16 */ - reg32_t _unused_esp; /* Offset 20 */ - reg32_t ebx; /* Offset 24 */ - reg32_t edx; /* Offset 28 */ - reg32_t ecx; /* Offset 32 */ - reg32_t eax; /* Offset 36 */ - - reg32_t eflags; /* Offset 40 */ -} com32sys_t; - -/* EFLAGS definitions */ -#define EFLAGS_CF 0x00000001 -#define EFLAGS_PF 0x00000004 -#define EFLAGS_AF 0x00000010 -#define EFLAGS_ZF 0x00000040 -#define EFLAGS_SF 0x00000080 -#define EFLAGS_TF 0x00000100 -#define EFLAGS_IF 0x00000200 -#define EFLAGS_DF 0x00000400 -#define EFLAGS_OF 0x00000800 -#define EFLAGS_IOPL 0x00003000 -#define EFLAGS_NT 0x00004000 -#define EFLAGS_RF 0x00010000 -#define EFLAGS_VM 0x00020000 -#define EFLAGS_AC 0x00040000 -#define EFLAGS_VIF 0x00080000 -#define EFLAGS_VIP 0x00100000 -#define EFLAGS_ID 0x00200000 - -struct com32_pmapi; - -extern struct com32_sys_args { - uint32_t cs_sysargs; - char *cs_cmdline; - void __cdecl (*cs_intcall)(uint8_t, const com32sys_t *, com32sys_t *); - void *cs_bounce; - uint32_t cs_bounce_size; - void __cdecl (*cs_farcall)(uint32_t, const com32sys_t *, com32sys_t *); - int __cdecl (*cs_cfarcall)(uint32_t, const void *, uint32_t); - uint32_t cs_memsize; - const char *cs_name; - const struct com32_pmapi *cs_pm; -} __com32; - -/* - * System call wrapper functions - */ -void __intcall(uint8_t __i, const com32sys_t * __sr, com32sys_t * __dr); -void __farcall(uint16_t __cs, uint16_t __ip, - const com32sys_t * __sr, com32sys_t * __dr); -int __cfarcall(uint16_t __cs, uint16_t __ip, - const void *__stack, uint32_t __stack_size); -extern const com32sys_t __com32_zero_regs; - -/* - * Lowmem allocation functions - */ -void *lmalloc(size_t); -void *lzalloc(size_t); -void lfree(void *); -char *lstrdup(const char *); - -/* - * These functions convert between linear pointers in the range - * 0..0xFFFFF and real-mode style SEG:OFFS pointers. Note that a - * 32-bit linear pointer is not compatible with a SEG:OFFS pointer - * stored in two consecutive 16-bit words. - * - * Use OFFS_WRT() if you want to compute an offset relative to a - * specific segment. OFFS_VALID() will return whether or not the - * pointer is actually reachable from the target segment. - */ -static inline uint16_t SEG(const volatile void *__p) -{ - return (uint16_t) (((uintptr_t) __p) >> 4); -} - -static inline uint16_t OFFS(const volatile void *__p) -{ - /* The double cast here is to shut up gcc */ - return (uint16_t) (uintptr_t) __p & 0x000F; -} - -static inline uint16_t OFFS_WRT(const volatile void *__p, uint16_t __seg) -{ - return (uint16_t) ((uintptr_t) __p - ((uintptr_t) __seg << 4)); -} - -#define OFFS_VALID(p,s) _OFFS_VALID((p), sizeof *(p), (s)) - -static inline bool _OFFS_VALID(const volatile void *__p, size_t __s, - uint16_t __seg) -{ - uintptr_t __segstart = (uintptr_t)__seg << 4; - uintptr_t __offs = (uintptr_t)__p - __segstart; - - return __offs <= 0x10000-__s; -} - -static inline void *MK_PTR(uint16_t __seg, uint16_t __offs) -{ - return (void *)((__seg << 4) + __offs); -} - -/* Some tools to handle 16:16 far pointers in memory */ - -struct __far_ptr { - union { - uint32_t ptr; - struct { - uint16_t offs, seg; - }; - }; -} __attribute__ ((packed)); - -typedef struct __far_ptr far_ptr_t; - -static inline void *GET_PTR(far_ptr_t __fptr) -{ - return MK_PTR(__fptr.seg, __fptr.offs); -} - -static inline far_ptr_t FAR_PTR(void *__ptr) -{ - far_ptr_t __fptr; - - __fptr.offs = OFFS(__ptr); - __fptr.seg = SEG(__ptr); - return __fptr; -} - -#endif /* _COM32_H */ |