bdiGDB for GNU Debugger, BDI2000 | User Manual 38 |
3.2.5 Part [REGS]
In order to make it easier to access target registers via the Telnet interface, the BDI can read in a register definition file. In this file, the user defines a name for the register and how the BDI should access it (e.g. as memory mapped, memory mapped with offset, ...). The name of the register defi- nition file and information for different registers type has to be defined in the configuration file.
The register name, type, address/offset/number and size are defined in a separate register definition file. This way, you can create one register definition file for a specific target processor that can be used for all possible positions of the internal memory map. You only have to change one entry in the configuration file.
An entry in the register definition file has the following syntax:
name type | addr size |
|
name | The name of the register (max. 12 characters) | |
type | The register type |
|
| GPR | General purpose register |
| CP15 | Coprocessor 15 register |
| CP14 | Coprocessor 14register |
| .... |
|
| CP0 | Coprocessor 0 register |
| MM | Absolute direct memory mapped register |
| DMM1...DMM4 | Relative direct memory mapped register |
| IMM1...IMM4 | Indirect memory mapped register |
| APB | APB memory mapped register |
addr | The address, offset or number of the register | |
size | The size (8, 16, 32) of the register, default is 32 | |
The following entries are supported in the [REGS] part of the configuration file:
FILE filename | The name of the register definition file. This name is used to access the | |
| file via TFTP. The file is loaded once during BDI startup. | |
| filename | the filename including the full path |
| Example: | FILE C:\bdi\regs\reg40400.def |
DMMn base | This defines the base address of direct memory mapped registers. This | |
| base address is added to the individual offset of the register. | |
| base | the base address |
| Example: | DMM1 0x01000 |
IMMn addr data | This defines the addresses of the memory mapped address and data reg- | |
| isters of indirect memory mapped registers. The address of a IMMn regis- | |
| ter is first written to "addr" and then the register value is access using | |
| "data" as address. | |
| addr | the address of the Address register |
| data | the address of the Data register |
| Example: | IMM1 0x04700000 0x04700004 |
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