函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:arch\x86\kernel\fpu\regset.c Create Date:2022-07-27 08:49:49
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：convert_to_fxsr

函数原型：void convert_to_fxsr(struct fxregs_state *fxsave, const struct user_i387_ia32_struct *env)

返回类型：void

参数：

类型参数名称
struct fxregs_state *fxsave
const struct user_i387_ia32_struct *env
272  struct _fpreg * from = (struct _fpreg * ) & 8*10 bytes for each FP-reg = 80 bytes [0]
273  struct _fpxreg * to = (struct _fpxreg * ) & 8*16 bytes for each FP-reg = 128 bytes: [0]
276  Control Word 等于cwd
277  Status Word 等于swd
278  Tag Word 等于FPU tag word conversions.
279  Last Instruction Opcode 等于fcs右移16位
281  Instruction Pointer 等于fip
282  Data Pointer 等于foo
291  以i小于8循环memcpy( & to[i], & from[i], from[0]的长度)
调用者
名称描述
fpregs_set
sanitize_restored_xstate