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-RAM_INIT_TABLE_SECTION [V1.12 or later]
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This option generates an information table for RAM initialization.
[Specification format]
-RAM_INIT_TABLE_SECTION[= section-name]
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- | Interpretation when omitted |
An information table for RAM initialization will not be generated.
[Detailed description]
- | This option generates an information table for RAM initialization. |
- | The information table is generated for the specified section name. |
- | If a section name is not specified, the table is generated with section name ".ram_init_table". |
- | Generally, the contents of the .data section are transferred from ROM to RAM at startup of a program. In addition, the RAM to which the .bss section is allocated is cleared to 0. This option generates a table containing the address and size information required for such operations. |
- | The information table contains a series of records that have the following fields. |
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Field 1
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4 bytes
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ROM start address: For data transfer from ROM to RAM
RAM start address: For clearing the RAM
0: End of the record
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Field 2
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2 bytes
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Transfer size: For data transfer from ROM to RAM or for clearing the RAM
0: End of the record
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Field 3
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2 bytes
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RAM start address: For data transfer from ROM to RAM or for clearing the RAM
0: End of the record
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- | Fields 1 to 3 are set to 0 at the end of the table. |
- | During startup processing, perform the following processing up to the end of the table: |
- | If field 1 and field 3 are different, copy the memory data for the size of field 2 from field 1 to field 3. |
- | If field 1 and field 3 are the same, clear the memory data for the size of field 2 from field 1 or field 3. |
- | The sections to be initialized are used for CPU program operations. Sections for the FLEXIBLE APPLICATION ACCELERATOR (FAA) are not contained in the table. |
[Example of use]
- | To generate an information table for RAM initialization, code as: |
> rlink a.obj b.obj -start=.data/1000,.dataR/f1000,.bss/f2000 -rom=.data=.dataR
-ram_init_table_section=.ram_init_table
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- | If the size of the .data section is 0x100 bytes and the size of the .bss section is 0x200 bytes, the following table is generated for the .ram_init_table section. |
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0x01000
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0x100
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0x1000
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0xf2000
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0x200
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0x2000
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0
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0
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0
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[Remark]
- | If the -form={object|relocate|library} option or -strip option is specified, this option will be invalid. |