函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:arch\x86\kernel\cpu\cyrix.c Create Date:2022-07-27 08:59:27
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：cyrix_identify

函数原型：static void cyrix_identify(struct cpuinfo_x86 *c)

返回类型：void

参数：

类型参数名称
struct cpuinfo_x86 *c
415  如果CPU family 恒等于4且Perform the Cyrix 5/2 test. A Cyrix won't change* the flags, while other 486 chips will.则
418  strcpy(x86_vendor_id, "CyrixInstead")
419  CPU vendor 等于X86_VENDOR_CYRIX
425  do_cyrix_devid( & dir0, & dir1)
427  dir0右移等于4位
431  如果dir0恒等于5或dir0恒等于3则
434  打印信息("Enabling CPUID on Cyrix processor.\n")
435  local_irq_save(flags)
436  ccr3等于NSC/Cyrix CPU indexed register access. Must be inlined instead of* macros to ensure correct access ordering* Access order is always 0x22 (=offset), 0x23 (=value)
438  setCx86(CX86_CCR3, (ccr3 & 0x0f) | 0x10)
440  setCx86(CX86_CCR4, NSC/Cyrix CPU indexed register access. Must be inlined instead of* macros to ensure correct access ordering* Access order is always 0x22 (=offset), 0x23 (=value) | 0x80)
442  setCx86(CX86_CCR3, ccr3)
443  local_irq_restore(flags)