diff options
Diffstat (limited to 'arch/i386/math-emu/fpu_system.h')
| -rw-r--r-- | arch/i386/math-emu/fpu_system.h | 90 |
1 files changed, 0 insertions, 90 deletions
diff --git a/arch/i386/math-emu/fpu_system.h b/arch/i386/math-emu/fpu_system.h deleted file mode 100644 index a3ae28c49dd..00000000000 --- a/arch/i386/math-emu/fpu_system.h +++ /dev/null @@ -1,90 +0,0 @@ -/*---------------------------------------------------------------------------+ - | fpu_system.h | - | | - | Copyright (C) 1992,1994,1997 | - | W. Metzenthen, 22 Parker St, Ormond, Vic 3163, | - | Australia. E-mail billm@suburbia.net | - | | - +---------------------------------------------------------------------------*/ - -#ifndef _FPU_SYSTEM_H -#define _FPU_SYSTEM_H - -/* system dependent definitions */ - -#include <linux/sched.h> -#include <linux/kernel.h> -#include <linux/mm.h> - -/* This sets the pointer FPU_info to point to the argument part - of the stack frame of math_emulate() */ -#define SETUP_DATA_AREA(arg) FPU_info = (struct info *) &arg - -/* s is always from a cpu register, and the cpu does bounds checking - * during register load --> no further bounds checks needed */ -#define LDT_DESCRIPTOR(s) (((struct desc_struct *)current->mm->context.ldt)[(s) >> 3]) -#define SEG_D_SIZE(x) ((x).b & (3 << 21)) -#define SEG_G_BIT(x) ((x).b & (1 << 23)) -#define SEG_GRANULARITY(x) (((x).b & (1 << 23)) ? 4096 : 1) -#define SEG_286_MODE(x) ((x).b & ( 0xff000000 | 0xf0000 | (1 << 23))) -#define SEG_BASE_ADDR(s) (((s).b & 0xff000000) \ - | (((s).b & 0xff) << 16) | ((s).a >> 16)) -#define SEG_LIMIT(s) (((s).b & 0xff0000) | ((s).a & 0xffff)) -#define SEG_EXECUTE_ONLY(s) (((s).b & ((1 << 11) | (1 << 9))) == (1 << 11)) -#define SEG_WRITE_PERM(s) (((s).b & ((1 << 11) | (1 << 9))) == (1 << 9)) -#define SEG_EXPAND_DOWN(s) (((s).b & ((1 << 11) | (1 << 10))) \ - == (1 << 10)) - -#define I387 (current->thread.i387) -#define FPU_info (I387.soft.info) - -#define FPU_CS (*(unsigned short *) &(FPU_info->___cs)) -#define FPU_SS (*(unsigned short *) &(FPU_info->___ss)) -#define FPU_DS (*(unsigned short *) &(FPU_info->___ds)) -#define FPU_EAX (FPU_info->___eax) -#define FPU_EFLAGS (FPU_info->___eflags) -#define FPU_EIP (FPU_info->___eip) -#define FPU_ORIG_EIP (FPU_info->___orig_eip) - -#define FPU_lookahead (I387.soft.lookahead) - -/* nz if ip_offset and cs_selector are not to be set for the current - instruction. */ -#define no_ip_update (*(u_char *)&(I387.soft.no_update)) -#define FPU_rm (*(u_char *)&(I387.soft.rm)) - -/* Number of bytes of data which can be legally accessed by the current - instruction. This only needs to hold a number <= 108, so a byte will do. */ -#define access_limit (*(u_char *)&(I387.soft.alimit)) - -#define partial_status (I387.soft.swd) -#define control_word (I387.soft.cwd) -#define fpu_tag_word (I387.soft.twd) -#define registers (I387.soft.st_space) -#define top (I387.soft.ftop) - -#define instruction_address (*(struct address *)&I387.soft.fip) -#define operand_address (*(struct address *)&I387.soft.foo) - -#define FPU_access_ok(x,y,z) if ( !access_ok(x,y,z) ) \ - math_abort(FPU_info,SIGSEGV) -#define FPU_abort math_abort(FPU_info, SIGSEGV) - -#undef FPU_IGNORE_CODE_SEGV -#ifdef FPU_IGNORE_CODE_SEGV -/* access_ok() is very expensive, and causes the emulator to run - about 20% slower if applied to the code. Anyway, errors due to bad - code addresses should be much rarer than errors due to bad data - addresses. */ -#define FPU_code_access_ok(z) -#else -/* A simpler test than access_ok() can probably be done for - FPU_code_access_ok() because the only possible error is to step - past the upper boundary of a legal code area. */ -#define FPU_code_access_ok(z) FPU_access_ok(VERIFY_READ,(void __user *)FPU_EIP,z) -#endif - -#define FPU_get_user(x,y) get_user((x),(y)) -#define FPU_put_user(x,y) put_user((x),(y)) - -#endif |