Alpha Options - Using as
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9.1.2 Options
-mcpuThis option specifies the target processor. If an attempt is made to
assemble an instruction which will not execute on the target processor,
the assembler may either expand the instruction as a macro or issue an
error message. This option is equivalent to the .arch directive.
The following processor names are recognized:
21064,
21064a,
21066,
21068,
21164,
21164a,
21164pc,
21264,
21264a,
21264b,
ev4,
ev5,
lca45,
ev5,
ev56,
pca56,
ev6,
ev67,
ev68.
The special name all may be used to allow the assembler to accept
instructions valid for any Alpha processor.
In order to support existing practice in OSF/1 with respect to .arch,
and existing practice within MILO (the Linux ARC bootloader), the
numbered processor names (e.g. 21064) enable the processor-specific PALcode
instructions, while the “electro-vlasic” names (e.g. ev4) do not.
-mdebug-no-mdebugEnables or disables the generation of .mdebug encapsulation for
stabs directives and procedure descriptors. The default is to automatically
enable .mdebug when the first stabs directive is seen.
-relaxThis option forces all relocations to be put into the object file, instead
of saving space and resolving some relocations at assembly time. Note that
this option does not propagate all symbol arithmetic into the object file,
because not all symbol arithmetic can be represented. However, the option
can still be useful in specific applications.
-gThis option is used when the compiler generates debug information. When
gcc is using mips-tfile to generate debug
information for ECOFF, local labels must be passed through to the object
file. Otherwise this option has no effect.
-GsizeA local common symbol larger than size is placed in .bss,
while smaller symbols are placed in .sbss.
-F-32addrThese options are ignored for backward compatibility.
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