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L166 User's Guide
Introduction Purpose of the Linker 
Combining Modules Combining Sections Aligning Sections Locating Sections Resolving Externals Calculating Addresses Generating an Object File Generating a Listing File Sections, Classes, and Groups Sections Classes Groups Real-Time Kernels 
Linking Programs Defining Physical Memory TGROUPS Error MessagesCombining Sections
Each section must have one of the following combination type attributes:
| Combination Type | Description |
|---|---|
| PRIVATE | Sections of this type are not combined with sections from other modules. They may be combined with PRIVATE sections from the same module. |
| ABSOLUTE | Sections of this type are located at an absolute address and are not combined with other sections. |
| PUBLIC | Sections of this type are combined with other PUBLIC sections having the same name. PUBLIC sections are visible within a single TGROUP. |
| GLOBAL | Sections of this type are combined with other GLOBAL sections having the same name. GLOBAL sections are visible to all TGROUPs. |
| COMMON | Sections of this type are overlapped with other COMMON sections having the same name into a single combined section. The length of the resulting section is the length of the largest section in the combination. |
| SYSSTACK | Sections of this type are combined with other SYSSTACK sections having the same name and located in on-chip RAM. The length of the resulting section is obtained by adding the lengths of the combined sections. |
| USRSTACK | Sections of this type are combined with other USRSTACK sections having the same name, located in memory, and accessed using DPPn:Offset. USRSTACK sections are visible within a single TGROUP. The length of the resulting section is obtained by adding the lengths of the combined sections. |
| GLOBUSRSTACK | Sections of this type are combined with other GLOBUSRSTACK sections having the same name, located in memory, and accessed using DPPn:Offset. GLOBUSRSTACK sections are visible to all TGROUPs. The length of the resulting section is obtained by adding the lengths of the combined sections. |
Sections with the combination types PUBLIC and GLOBAL are combined end-to-end. A gap may exist between the sections if the alignment requires it. The relative addresses in the sections are adjusted for the increased section length.
Sections with the combination types SYSSTACK, USRSTACK, and GLOBUSRSTACK are overlaid but the section lengths are added together. The new section has the length of all the combined partial sections.
Sections with the combination type COMMON are overlaid with the low addresses starting at a common address. The length of the combined memory section is the length of the largest partial section that was combined.
Note
- Use the same section and class name in each module to be sure that sections are combined correctly.
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