Gcc/10.2.0/gcc/H8 002f300-Options
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3.19.19 H8/300 Options
These ‘-m
’ options are defined for the H8/300 implementations:
-mrelax
Shorten some address references at link time, when possible; uses the linker option
-relax
. Seeld
and the H8/300 in Using ld, for a fuller description.-mh
Generate code for the H8/300H.
-ms
Generate code for the H8S.
-mn
Generate code for the H8S and H8/300H in the normal mode. This switch must be used either with
-mh
or-ms
.-ms2600
Generate code for the H8S/2600. This switch must be used with
-ms
.-mexr
Extended registers are stored on stack before execution of function with monitor attribute. Default option is
-mexr
. This option is valid only for H8S targets.-mno-exr
Extended registers are not stored on stack before execution of function with monitor attribute. Default option is
-mno-exr
. This option is valid only for H8S targets.-mint32
Make
int
data 32 bits by default.-malign-300
On the H8/300H and H8S, use the same alignment rules as for the H8/300. The default for the H8/300H and H8S is to align longs and floats on 4-byte boundaries.
-malign-300
causes them to be aligned on 2-byte boundaries. This option has no effect on the H8/300.