12

Chapter 2. Overview

 bump

Warn when the assembler switches to another architecture.

The following options are available when as is configured for the 'c54x architecture.

 mfar mode

Enable extended addressing mode. All addresses and relocations will assume extended address 

ing (usually 23 bits).

 mcpu=CPU_VERSION

Sets the CPU version being compiled for.

 merrors to file FILENAME

Redirect error output to a file, for broken systems which don't support such behaviour in the

shell.

The following options are available when as is configured for a mips processor.

 G num

This option sets the largest size of an object that can be referenced implicitly with the

gp

register.

It is only accepted for targets that use ECOFF format, such as a DECstation running Ultrix. The

default value is 8.

 EB

Generate "big endian" format output.

 EL

Generate "little endian" format output.

 mips1

 mips2

 mips3

 mips4

 mips5

 mips32

 mips32r2

 mips64

 mips64r2

Generate code for a particular mips Instruction Set Architecture level.

 mips1

is an

alias for

 march=r3000

,

 mips2

is an alias for

 march=r6000

,

 mips3

is an alias for

 march=r4000

and

 mips4

is an alias for

 march=r8000

.

 mips5

,

 mips32

,

 mips32r2

,

 mips64

, and

 mips64r2

correspond to generic

MIPS V

,

MIPS32

,

MIPS32 Release 2

,

MIPS64

, and

MIPS64 Release 2

ISA processors, respectively.

 march=CPU

Generate code for a particular mips cpu.

 mtune=cpu

Schedule and tune for a particular mips cpu.