 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 fromelfType 1, one load region and contiguous execution r
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| Home > Using the Basic Linker Functionality > Using command-line options to create simple images > Type 1, one load region and contiguous execution regions | |||
An image of this type consists of a single load region in the load view and three execution regions placed contiguously in the memory map. This approach is suitable for systems that load programs into RAM, for example, an OS bootloader or a desktop system (see Figure 3.3).
Use the following command for images of this type:
armlink ‑‑ro‑base 0x8000
The single load region consists of the RO and RW output sections placed consecutively. The RO and RW execution regions are both root regions. The ZI output section does not exist at load time. It is created before execution using the output section description in the image file.
The three execution regions containing the RO, RW, and ZI output sections are arranged contiguously. The execution addresses of the RO and RW execution regions are the same as their load addresses, so nothing has to be moved from its load address to its execution address. However, the ZI execution region that contains the ZI output section is created before execution begins.
Use armlink option ‑‑ro‑base to specify the load and execution address of the region containing the RO output. The default address is address0x8000 as shown in Figure 3.3.
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