「Step to UEFI (92）关于 ConOut 的奇怪实验」的评论 https://www.lab-z.com/stu92/ Thu, 30 Jun 2016 09:00:47 +0000 hourly 1 https://wordpress.org/?v=7.0 评论者：ziv2013 https://www.lab-z.com/stu92/#comment-19955 Thu, 30 Jun 2016 09:00:47 +0000 http://www.lab-z.com/?p=4433#comment-19955 回复给 snowman1101。

谢谢哈 回头我就试试看

]]> 评论者：snowman1101 https://www.lab-z.com/stu92/#comment-19954 Thu, 30 Jun 2016 08:05:19 +0000 http://www.lab-z.com/?p=4433#comment-19954 之前可以用，是因为你没有改写pmyST->ConOut 的地址，这时地址和gST->ConOut是相等的，
后来你改写了ConOut 这样CR 就通不过验证了
如果你把改写后pmyST->ConOut 地址前的 UINTN 字节（Signature）也复制过来就应该不会报错了。
但不保证其他地方不出错，或者你声明一个 自己的 myCONSOLE_LOGGER_PRIVATE_DATA
#define CONSOLE_LOGGER_PRIVATE_DATA_SIGNATURE SIGNATURE_32 (‘c’, ‘o’, ‘P’, ‘D’)

typedef struct _CONSOLE_LOGGER_PRIVATE_DATA{
UINTN Signature;
EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL OurConOut;
EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL *OldConOut;
EFI_HANDLE OldConHandle;
UINTN ScreenCount;
CHAR16 *Buffer;
UINTN BufferSize;

// start row is the top of the screen
UINTN OriginalStartRow;
UINTN CurrentStartRow;

UINTN RowsPerScreen;
UINTN ColsPerScreen;

INT32 *Attributes;
UINTN AttribSize;

EFI_SIMPLE_TEXT_OUTPUT_MODE HistoryMode;
BOOLEAN Enabled;
UINTN RowCounter;
} CONSOLE_LOGGER_PRIVATE_DATA;

#define CONSOLE_LOGGER_PRIVATE_DATA_FROM_THIS(a) CR (a, CONSOLE_LOGGER_PRIVATE_DATA, OurConOut, CONSOLE_LOGGER_PRIVATE_DATA_SIGNATURE);

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