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MICROPROCESSOR INSTRUCTION REFERENCE->FSAVE
Save Internal Floating Point State
Compatibility: ColdFire chips with a floating-point unit (FPU)
If in Supervisor State, FPU internal state -> destination
else Privilege Violation Exception
Attributes: unsized
| Assembler Syntax: | FSAVE <ea> |
After allowing the completion of any floating-point operation in progress, FSAVE saves the FPU internal state in a frame at the effective address. The FPCR is cleared and the FPU is in the idle state until the next instruction executes.
If the FPU was in the NULL state, a NULL state frame is created.
If any FPSR exception bits are set and a corresponding FPCR bit is set, an EXCP state frame is created.
Otherwise and IDLE state frame is created.
FSAVE does not save the floating-point data registers.
Floating-Point Status Register: not affected
Floating-Point Control Register: cleared
| Allowable Addressing Modes |
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