The ARMulator provides models of the VFP architecture that can run VFP instructions. However as these model the architecture rather than specific implementations, they cannot be used to accurately benchmark the floating-point performance that will be obtained in a real system.
Table 4.
| AXD supports the debugging of ARM7, 9 and 10 processors only, not ARM11 or later (use RVD instead).AXD is deprecated in RVDS 3.0, and is not installed by default as part of a "typical" installation.AXD supports debugging with DWARF2 debug tables only, not DWARF3. The RVCT 3.0 compilation tools generate debug images with DWARF3 debug tables by default. To use AXD, compile with --dwarf2. |
Within AXD select the "Options -> Configure Target" menu. Then ensure that "ARMUL" is the selected target and click on the Configure button. This displays the ARMulator Configuration dialog box.
You can then change the Processor and Floating-Point Coprocessor settings to match your requirements:
Table 5.
 | Select an appropriate Processor and FPU setting To emulate a vfpv2 FPU on an ARM9, first select the processor needed (e.g. ARM926EJ-S) and then select VFPv2. VFPv2 (Fast-mode) is a VFP model that does not bounce to support code. If a vfpv2 FPU is to be included for an ARM10, for example the ARM1020E, the variant including the VFP10, e.g. ARM10200E should be chosen and the "No FPU" setting should be selected. If you select a processor containing an FPU and then an FPU model is chosen explicitly, the behaviour of the ARMulator can be unpredictable. An error will be given if an incompatible combination of processor and fpu are chosen. |
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