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3.19.36 OpenRISC Options

These options are defined for OpenRISC:

+-mboard=name +
+

Configure a board specific runtime. This will be passed to the linker for newlib board library linking. The default is or1ksim.

+-mnewlib +
+

This option is ignored; it is for compatibility purposes only. This used to select linker and preprocessor options for use with newlib.

+ -msoft-div +
-mhard-div
+

Select software or hardware divide (l.div, l.divu) instructions. This default is hardware divide.

+ -msoft-mul +
-mhard-mul
+

Select software or hardware multiply (l.mul, l.muli) instructions. This default is hardware multiply.

+ -msoft-float +
-mhard-float
+

Select software or hardware for floating point operations. The default is software.

+-mdouble-float +
+

When -mhard-float is selected, enables generation of double-precision floating point instructions. By default functions from libgcc are used to perform double-precision floating point operations.

+-munordered-float +
+

When -mhard-float is selected, enables generation of unordered floating point compare and set flag (lf.sfun*) instructions. By default functions from libgcc are used to perform unordered floating point compare and set flag operations.

+-mcmov +
+

Enable generation of conditional move (l.cmov) instructions. By default the equivalent will be generated using set and branch.

+-mror +
+

Enable generation of rotate right (l.ror) instructions. By default functions from libgcc are used to perform rotate right operations.

+-mrori +
+

Enable generation of rotate right with immediate (l.rori) instructions. By default functions from libgcc are used to perform rotate right with immediate operations.

+-msext +
+

Enable generation of sign extension (l.ext*) instructions. By default memory loads are used to perform sign extension.

+-msfimm +
+

Enable generation of compare and set flag with immediate (l.sf*i) instructions. By default extra instructions will be generated to store the immediate to a register first.

+-mshftimm +
+

Enable generation of shift with immediate (l.srai, l.srli, l.slli) instructions. By default extra instructions will be generated to store the immediate to a register first.

+-mcmodel=small +
+

Generate OpenRISC code for the small model: The GOT is limited to 64k. This is the default model.

+-mcmodel=large +
+

Generate OpenRISC code for the large model: The GOT may grow up to 4G in size.

Next: PDP-11 Options, Previous: Nvidia PTX Options, Up: Machine-Dependent Options [Contents][Index]

+

+ © Free Software Foundation
Licensed under the GNU Free Documentation License, Version 1.3.
+ https://gcc.gnu.org/onlinedocs/gcc-13.1.0/gcc/OpenRISC-Options.html +

+
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