The preprocessor directive %error will cause NASM to report an error if it occurs in assembled code. So if other users are going to try to assemble your source files, you can ensure that they define the right macros by means of code like this:
%ifdef F1
; do some setup
%elifdef F2
; do some different setup
%else
%error “Neither F1 nor F2 was defined.”
%endif
Then any user who fails to understand the way your code is supposed to be assembled will be quickly warned of their mistake, rather than having to wait until the program crashes on being run and then not knowing what went wrong.
Similarly, %warning issues a warning, but allows assembly to continue:
%ifdef F1
; do some setup
%elifdef F2
; do some different setup
%else
%warning “Neither F1 nor F2 was defined, assuming F1.”
%define F1
%endif
%error and %warning are issued only on the final assembly pass. This makes them safe to use in conjunction with tests that depend on symbol values.
%fatal terminates assembly immediately, regardless of pass. This is useful when there is no point in continuing the assembly further, and doing so is likely just going to cause a spew of confusing error messages.
It is optional for the message string after %error, %warning or %fatal to be quoted. If it is not, then single-line macros are expanded in it, which can be used to display more information to the user. For example:
之前介绍过的通过WinPE启动，通过软件将安装好的硬盘制作成镜像，然后当有需要时直接恢复的方法。但是更多时候我们出于测试的目的，需要安装最新版本的 Pure OS。 这次介绍的全自动安装也就是无人值守模式安装，就是说只需要启动到安装盘上，Windows会自动完成包括分区格式化在内的全部工作。这是Windows自带的功能，只需要将特定的autounattend.xml 放置在启动盘的根目录下即可。具体做法如下：
In file included from c:\users\DaveX\appdata\local\arduino15\packages\esp32\tools\xtensa-esp32-elf-gcc\gcc8_4_0-esp-2021r2-patch3\xtensa-esp32-elf\include\c++\8.4.0\bits\locale_facets_nonio.h:39,
from c:\users\DaveX\appdata\local\arduino15\packages\esp32\tools\xtensa-esp32-elf-gcc\gcc8_4_0-esp-2021r2-patch3\xtensa-esp32-elf\include\c++\8.4.0\locale:41,
from c:\users\DaveX\appdata\local\arduino15\packages\esp32\tools\xtensa-esp32-elf-gcc\gcc8_4_0-esp-2021r2-patch3\xtensa-esp32-elf\include\c++\8.4.0\iomanip:43,
from C:\Users\DaveX\AppData\Local\Arduino15\packages\esp32\hardware\esp32\2.0.4\libraries\BluetoothSerial\src\BTAddress.cpp:15:
c:\users\DaveX\appdata\local\arduino15\packages\esp32\tools\xtensa-esp32-elf-gcc\gcc8_4_0-esp-2021r2-patch3\xtensa-esp32-elf\include\c++\8.4.0\ctime:64:11: error: '::clock' has not been declared
using ::clock;
^~~~~
c:\users\DaveX\appdata\local\arduino15\packages\esp32\tools\xtensa-esp32-elf-gcc\gcc8_4_0-esp-2021r2-patch3\xtensa-esp32-elf\include\c++\8.4.0\ctime:65:11: error: '::difftime' has not been declared
using ::difftime;
^~~~~~~~
c:\users\DaveX\appdata\local\arduino15\packages\esp32\tools\xtensa-esp32-elf-gcc\gcc8_4_0-esp-2021r2-patch3\xtensa-esp32-elf\include\c++\8.4.0\ctime:66:11: error: '::mktime' has not been declared
using ::mktime;
^~~~~~
c:\users\DaveX\appdata\local\arduino15\packages\esp32\tools\xtensa-esp32-elf-gcc\gcc8_4_0-esp-2021r2-patch3\xtensa-esp32-elf\include\c++\8.4.0\ctime:67:11: error: '::time' has not been declared
using ::time;
^~~~
c:\users\DaveX\appdata\local\arduino15\packages\esp32\tools\xtensa-esp32-elf-gcc\gcc8_4_0-esp-2021r2-patch3\xtensa-esp32-elf\include\c++\8.4.0\ctime:68:11: error: '::asctime' has not been declared
using ::asctime;
^~~~~~~
c:\users\DaveX\appdata\local\arduino15\packages\esp32\tools\xtensa-esp32-elf-gcc\gcc8_4_0-esp-2021r2-patch3\xtensa-esp32-elf\include\c++\8.4.0\ctime:69:11: error: '::ctime' has not been declared
using ::ctime;
^~~~~
c:\users\DaveX\appdata\local\arduino15\packages\esp32\tools\xtensa-esp32-elf-gcc\gcc8_4_0-esp-2021r2-patch3\xtensa-esp32-elf\include\c++\8.4.0\ctime:70:11: error: '::gmtime' has not been declared
using ::gmtime;
^~~~~~
c:\users\DaveX\appdata\local\arduino15\packages\esp32\tools\xtensa-esp32-elf-gcc\gcc8_4_0-esp-2021r2-patch3\xtensa-esp32-elf\include\c++\8.4.0\ctime:71:11: error: '::localtime' has not been declared
using ::localtime;
^~~~~~~~~
c:\users\DaveX\appdata\local\arduino15\packages\esp32\tools\xtensa-esp32-elf-gcc\gcc8_4_0-esp-2021r2-patch3\xtensa-esp32-elf\include\c++\8.4.0\ctime:72:11: error: '::strftime' has not been declared
using ::strftime;
^~~~~~~~
/**
External function. Initializes memory services based on the memory
descriptor HOBs. This function is responsible for priming the memory
map, so memory allocations and resource allocations can be made.
The first part of this function can not depend on any memory services
until at least one memory descriptor is provided to the memory services.
@param HobStart The start address of the HOB.
@param MemoryBaseAddress Start address of memory region found to init DXE
core.
@param MemoryLength Length of memory region found to init DXE core.
@retval EFI_SUCCESS Memory services successfully initialized.
**/
EFI_STATUS
CoreInitializeMemoryServices (
IN VOID **HobStart,
OUT EFI_PHYSICAL_ADDRESS *MemoryBaseAddress,
OUT UINT64 *MemoryLength
)
//
// Allocate the EFI System Table and EFI Runtime Service Table from EfiRuntimeServicesData
// Use the templates to initialize the contents of the EFI System Table and EFI Runtime Services Table
//
gDxeCoreST = AllocateRuntimeCopyPool (sizeof (EFI_SYSTEM_TABLE), &mEfiSystemTableTemplate);
ASSERT (gDxeCoreST != NULL);
gDxeCoreRT = AllocateRuntimeCopyPool (sizeof (EFI_RUNTIME_SERVICES), &mEfiRuntimeServicesTableTemplate);
ASSERT (gDxeCoreRT != NULL);
gDxeCoreST->RuntimeServices = gDxeCoreRT;
FILE FV_IMAGE = 9E21FD93-9C72-4c15-8C4B-E77F1DB2D792 {
SECTION GUIDED EE4E5898-3914-4259-9D6E-DC7BD79403CF PROCESSING_REQUIRED = TRUE {
#
# These firmware volumes will have files placed in them uncompressed,
# and then both firmware volumes will be compressed in a single
# compression operation in order to achieve better overall compression.
#
SECTION FV_IMAGE = PEIFV
SECTION FV_IMAGE = DXEFV
}
}
/**
Entry point of the section extraction code. Initializes an instance of the
section extraction interface and installs it on a new handle.
@param ImageHandle A handle for the image that is initializing this driver
@param SystemTable A pointer to the EFI system table
@retval EFI_SUCCESS Driver initialized successfully
@retval EFI_OUT_OF_RESOURCES Could not allocate needed resources
**/
EFI_STATUS
EFIAPI
InitializeSectionExtraction (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
（感觉是将 PEI 和 DXE打包在一起）
#elif defined(SPI_HAS_TRANSACTION)
static void init() {
//LABZDebug USB_SPI.begin(); // The SPI library with transaction will take care of setting up the pins - settings is set in beginTransaction()
//LABZDebug_Start
USB_SPI.begin(10,21,19,13); // The SPI library with transaction will take care of setting up the pins - settings is set in beginTransaction()
//LABZDebug_End
SPI_SS::SetDirWrite();
SPI_SS::Set();
}
#elif defined(STM32F4)
//LABZDebug USB_SPI.beginTransaction(SPISettings(26000000, MSBFIRST, SPI_MODE0)); // The MAX3421E can handle up to 26MHz, use MSB First and SPI mode 0
//LABZDebug_Start
USB_SPI.beginTransaction(SPISettings(4000000, MSBFIRST, SPI_MODE0));
//LABZDebug_End
2.USB_Host_Shield_Library_2.0\UsbCore.h 这里给出用到的SS 和 INT Pin编号
