3.19.27 MicroBlaze Options


Use software emulation for floating point (default).


Use hardware floating-point instructions.


Do not optimize block moves, use memcpy.


This option is deprecated. Use -fno-zero-initialized-in-bss instead.


Use features of, and schedule code for, the given CPU. Supported values are in the format ‘vX.YY.Z’, where X is a major version, YY is the minor version, and Z is compatibility code. Example values are ‘v3.00.a’, ‘v4.00.b’, ‘v5.00.a’, ‘v5.00.b’, ‘v6.00.a’.


Use software multiply emulation (default).


Use software emulation for divides (default).


Use the hardware barrel shifter.


Use pattern compare instructions.


Use table lookup optimization for small signed integer divisions.


This option is deprecated. Use -fstack-check instead.


Use GP-relative .sdata/.sbss sections.


Use multiply high instructions for high part of 32x32 multiply.


Use hardware floating-point conversion instructions.


Use hardware floating-point square root instruction.


Generate code for a big-endian target.


Generate code for a little-endian target.


Use reorder instructions (swap and byte reversed load/store).


Select application model app-model. Valid models are


normal executable (default), uses startup code crt0.o.


for use with Xilinx Microprocessor Debugger (XMD) based software intrusive debug agent called xmdstub. This uses startup file crt1.o and sets the start address of the program to 0x800.


for applications that are loaded using a bootloader. This model uses startup file crt2.o which does not contain a processor reset vector handler. This is suitable for transferring control on a processor reset to the bootloader rather than the application.


for applications that do not require any of the MicroBlaze vectors. This option may be useful for applications running within a monitoring application. This model uses crt3.o as a startup file.

Option -xl-mode-app-model is a deprecated alias for -mxl-mode-app-model.


Assume that the displacement between the text and data segments is fixed at static link time. This allows data to be referenced by offset from start of text address instead of GOT since PC-relative addressing is not supported.