Floating-point Check Flags InstructionFloating-point Check Flags Instructionfchkf
Instruction Type F
Format
(qp) fchkf.sf target25
Description
The flags in FPSR.sf.flags are compared with FPSR.s0.flags and FPSR.traps. If any flags set in FPSR.sf.flags correspond to FPSR.traps which are enabled, or if any flags set in FPSR.sf.flags are not set in FPSR.s0.flags, then a branch to target25 is taken.
The target25 operand, specifies a label to branch to. This is encoded in the instruction as a signed immediate displacement (imm21) between the target bundle and the bundle containing this instruction (imm21 = target25 - IP >> 4).
The branching behavior of this instruction can be optionally unimplemented. If the instruction would have branched, and the branching behavior is not implemented, then a Speculative Operation fault is taken and the value specified by imm21 is zero-extended and placed in the Interruption Immediate control register (IIM). The fault handler emulates the branch by sign-extending the IIM value, adding it to IIP and returning.
chk.a - Speculation Check Instruction
fabs - Floating-point Absolute Value Instruction
fadd - Floating-point Add Instruction
famax - Floating-point Absolute Maximum Instruction
famin - Floating-point Absolute Minimum Instruction
fchkf - Floating-point Check Flags Instruction
fclass - Floating-point Class Instruction
fclrf - Floating-point Clear Flags Instruction
fcmp - Floating-point Compare Instruction
fcvt.xf - Convert Signed Integer to Floating-point Instruction
fcvt.xuf - Convert Unsigned Integer to Floating-point Instruction
Floating-Point Arithmetic Instructions
Floating-Point Memory Access Instructions
Floating-Point Non-Arithmetic Instructions
Floating-Point Pseudo-Operations
Floating-Point Register Transfer Instructions
Floating-Point Status Register (FPSR) Status Field Instructions
fma - Floating-point Multiply Add Instruction
fmax - Floating-point Maximum Instruction
fmerge - Floating-point Merge Instruction
fmin - Floating-point Minimum Instruction
fmix - Floating-point Mix Instruction
fmpy - Floating-point Multiply Instruction
fms - Floating-point Multiply Subtract Instruction
fneg - Floating-point Negate Instruction
fnegabs - Floating-point Negate Absolute Value Instruction
fnma - Floating-point Negative Multiply Add Instruction
fnmpy - Floating-point Negative Multiply Instruction
fnorm - Floating-point Normalize Instruction
for - Floating-point OR Instruction
fpabs - Floating-point Parallel Absolute Value Instruction
fpack - Floating-point Pack Instruction
fpamax - Floating-point Parallel Absolute Value Maximum Instruction
fpamin - Floating-point Parallel Absolute Value Minimum Instruction
fpcmp - Floating-point Parallel Compare Instruction
fpcvt.fx - Convert Parallel Floating-point to Integer Instruction
fpma - Floating-point Parallel Multiply Add Instruction
fpmax - Floating-point Parallel Maximum Instruction
fpmerge - Floating-point Parallel Merge Instructions
fpmin - Floating-point Parallel Minimum Instruction
fpmpy - Floating-point Parallel Multiply Instruction
fpms - Floating-point Parallel Multiply Subtract Instruction
fpneg - Floating-point Parallel Negate Instruction
fpnegabs - Floating-point Parallel Negate Absolute Value Instruction
fpnma - Floating-point Parallel Negative Multiply Add Instruction
fpnmpy - Floating-point Parallel Negative Multiply Instruction
fprcpa - Floating-point Parallel Reciprocal Approximation Instruction
fprsqrta - Floating-point Parallel Reciprocal Square Root Approximation Instruction
frcpa - Floating-point Reciprocal Approximation Instruction
frsqrta - Floating-point Reciprocal Square Root Approximation Instruction
fselect - Floating-point Select Instruction
fsetc - Floating-point Set Controls Instruction
fsub - Floating-point Subtract Instruction
fswap - Floating-point Swap Instruction
fsxt - Floating-point Sign Extend Instruction
fwb - Flush Write Buffers Instruction
fxor - Floating-point Exclusive Or Instruction
getf - Get Floating-point Value or Exponent or Significand Instruction
Integer Multiply and Add (in FP Unit) Instructions
ldf - Floating-point Load Instruction
ldfp - Floating-point Load Pair Instruction
mov fr - Move Floating-point Register Instruction
psad1 - Parallel Sum of Absolute Difference Instruction
setf - Set Floating-point Value, Exponent, or Significand Instruction