gdb: MIPS Embedded
21.3.5 MIPS Embedded
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GDB supports these special commands for MIPS targets:
'set mipsfpu double'
'set mipsfpu single'
'set mipsfpu none'
'set mipsfpu auto'
'show mipsfpu'
If your target board does not support the MIPS floating point
coprocessor, you should use the command 'set mipsfpu none' (if you
need this, you may wish to put the command in your GDB init file).
This tells GDB how to find the return value of functions which
return floating point values. It also allows GDB to avoid saving
the floating point registers when calling functions on the board.
If you are using a floating point coprocessor with only single
precision floating point support, as on the R4650 processor, use
the command 'set mipsfpu single'. The default double precision
floating point coprocessor may be selected using 'set mipsfpu
double'.
In previous versions the only choices were double precision or no
floating point, so 'set mipsfpu on' will select double precision
and 'set mipsfpu off' will select no floating point.
As usual, you can inquire about the 'mipsfpu' variable with 'show
mipsfpu'.
Info Catalog
gdb: MicroBlaze
gdb: Embedded Processors
gdb: OpenRISC 1000