Zilog Z8F0130 - Manual (Page 369)

UM013037-1212 Using the Linker/Locator
Zilog Developer Studio II – Z8 Encore!
User Manual
345
Using the Linker/Locator
The linker/locator in the Z8 Encore! developer’s environment creates a single executable
file from a set of object modules and object libraries. It acts as a linker by linking together
object modules and resolving external references to public symbols. It also acts as a loca-
tor because it allows you to specify where code and data is stored in the target processor at
run time. The executable file generated by the linker can be loaded onto the target system
and debugged using the Zilog Developer Studio II.
This section describes the following topics:
•
Linker Functions – see page 345
•
Invoking the Linker – see page 346
•
Linker Commands – see page 347
•
Linker Expressions – see page 359
•
Sample Linker Map File – see page 366
•
Warning and Error Messages – see page 381
Linker Functions
The following five major types of objects are manipulated during the linking process:
•
Libraries
Object libraries are collections of object modules created by the Librarian.
•
Modules
Modules are created by assembling a file with the assembler or compiling a file with
the compiler.
•
Address spaces
Each module consists of various address spaces. Address spaces correspond to either a
physical or logical block of memory on the target processor. For example, a Harvard
architecture that physically divides memory into program and data stores has two
physical blocks – each with its own set of addresses. Logical address spaces are often
used to divide a large contiguous block of memory in order to separate data and code.
In this case, the address spaces partition the physical memory into two logical address
spaces. The memory range for each address space depends on the particular Z8
Encore! family member. For more information about address spaces, see the
Address
Spaces section on page 278.
•
Groups