 RealView Linker and Utilities Guide | |
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RealView Linker and Utilities Guide
Preface Introduction The Linker Command Syntax Using the Basic Linker Functionality Specifying the image structure
Building blocks for objects and images Load view and execution view of an image Specifying an image memory map Image entry points Section placement Ordering input sections by attribute Using FIRST and LAST to place sections Aligning sections Ordering execution regions containing Thumb code Optimizations and modifications Common debug section elimination Common group or section elimination Unused section elimination Unused function elimination Linker feedback RW data compression PI to absolute veneers Veneer generation Reuse of veneers with overlay execution regions Branch inlining Using command-line options to create simple images Type 1, one load region and contiguous execution r Type 2, one load region and non contiguous executi Type 3, two load regions and non contiguous execut Using command-line options to handle C++ exception Getting information about images Using image-related information Accessing Image Symbols Using Scatter-loading Description Files Using the ARM Librarian Using fromelfUsing command-line options to create simple images
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| Home > Using the Basic Linker Functionality > Using command-line options to create simple images | |||
A simple image consists of a number of input sections of type RO, RW, and ZI. These input sections are collated to form the RO, RW, and ZI output sections. Depending on how the output sections are arranged within load and execution regions, there are three basic types of simple image:
- Type 1
One region in load view, three contiguous regions in execution view. Use the
‑‑ro‑baseoption to create this type of image.See Type 1, one load region and contiguous execution regions for more information.
- Type 2
One region in load view, three non contiguous regions in execution view. Use the
‑‑ro‑baseand‑‑rw‑baseoptions to create this type of image.See Type 2, one load region and non contiguous execution regions for more information.
- Type 3
Two regions in load view, three non contiguous regions in execution view. Use the
‑‑ro‑base,‑‑rw‑base, and‑‑splitoptions to create this type of image. You can also use the‑‑rosplitoption to split the default load region into two RO output sections, one for code and one for data.See Type 3, two load regions and non contiguous execution regions for more information.
In all three simple image types, there are up to three execution regions where:
the first execution region contains the RO output section
the second execution region contains the RW output section (if present)
the third execution region contains the ZI output section (if present).
These execution regions are referred to as the RO, the RW, and the ZI execution region.
Simple images can also be created with scatter-loading description files. See Equivalent scatter-loading descriptions for simple images for more information on how to do this.
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