--- /dev/null
+<!-- X Instructions here described in PowerISA Version 3.0 B Book 1 -->
+
+<!-- Section 4.6.1 Floating-point storage access instructions. P 140 - 143 -->
+
+# Load Floating-Point Single with Post-Update
+
+D-Form
+
+* lfsup FRT,D(RA)
+
+Pseudo-code:
+
+ EA <- (RA) + EXTS(D)
+ FRT <- DOUBLE(MEM(RA, 4))
+ RA <- EA
+
+Description:
+
+ Let the effective address (EA) be the sum (RA)+D.
+
+ The word in storage addressed by EA is interpreted as
+ a floating-point single-precision operand. This word is
+ converted to floating-point double format (see
+ page 138) and placed into register FRT.
+
+ EA is placed into register RA.
+
+ If RA=0, the instruction form is invalid.
+
+Special Registers Altered:
+
+ None
+
+# Load Floating-Point Single with Post-Update Indexed
+
+X-Form
+
+* lfsupx FRT,RA,RB
+
+Pseudo-code:
+
+ EA <- (RA) + (RB)
+ FRT <- DOUBLE(MEM(RA, 4))
+ RA <- EA
+
+Description:
+
+ Let the effective address (EA) be the sum (RA)+(RB).
+
+ The word in storage addressed by EA is interpreted as
+ a floating-point single-precision operand. This word is
+ converted to floating-point double format (see
+ page 138) and placed into register FRT.
+
+ EA is placed into register RA.
+
+ If RA=0, the instruction form is invalid.
+
+Special Registers Altered:
+
+ None
+
+# Load Floating-Point Double with Post-Update
+
+D-Form
+
+* lfdup FRT,D(RA)
+
+Pseudo-code:
+
+ EA <- (RA) + EXTS(D)
+ FRT <- MEM(RA, 8)
+ RA <- EA
+
+Description:
+
+ Let the effective address (EA) be the sum (RA)+D.
+
+ The doubleword in storage addressed by EA is loaded
+ into register FRT.
+
+ EA is placed into register RA.
+
+ If RA=0, the instruction form is invalid.
+
+Special Registers Altered:
+
+ None
+
+# Load Floating-Point Double with Post-Update Indexed
+
+X-Form
+
+* lfduxp FRT,RA,RB
+
+Pseudo-code:
+
+ EA <- (RA) + (RB)
+ FRT <- MEM(RA, 8)
+ RA <- EA
+
+Description:
+
+ Let the effective address (EA) be the sum (RA)+(RB).
+
+ The doubleword in storage addressed by EA is loaded
+ into register FRT.
+
+ EA is placed into register RA.
+
+ If RA=0, the instruction form is invalid.
+
+Special Registers Altered:
+
+ None
+
--- /dev/null
+<!-- X Instructions here described in PowerISA Version 3.0 B Book 1 -->
+
+<!-- Section 4.6.3 Floating-point store instructions. P 144 - 147 -->
+
+# Store Floating-Point Single with Update
+
+D-Form
+
+* stfsu FRS,D(RA)
+
+Pseudo-code:
+
+ EA <- (RA) + EXTS(D)
+ MEM(RA, 4)<- SINGLE( (FRS) )
+ RA <- EA
+
+Description:
+
+ Let the effective address (EA) be the sum (RA) +D.
+
+ The contents of register FRS are converted to single
+ format (see page 142) and stored into the word in stor-
+ age addressed by RA.
+
+ EA is placed into register RA.
+
+ If RA=0, the instruction form is invalid.
+
+Special Registers Altered:
+
+ None
+
+# Store Floating-Point Single with Update Indexed
+
+X-Form
+
+* stfsux FRS,RA,RB
+
+Pseudo-code:
+
+ EA <- (RA) + (RB)
+ MEM(RA, 4)<- SINGLE( (FRS) )
+ RA <- EA
+
+Description:
+
+ Let the effective address (EA) be the sum (RA) +(RB).
+
+ The contents of register FRS are converted to single
+ format (see page 142) and stored into the word in stor-
+ age addressed by RA.
+
+ EA is placed into register RA.
+
+ If RA=0, the instruction form is invalid.
+
+Special Registers Altered:
+
+ None
+
+# Store Floating-Point Double with Update
+
+D-Form
+
+* stfdu FRS,D(RA)
+
+Pseudo-code:
+
+ EA <- (RA) + EXTS(D)
+ MEM(RA, 8)<- (FRS)
+ RA <- EA
+
+Description:
+
+ Let the effective address (EA) be the sum (RA)+D.
+
+ The contents of register FRS are stored into the dou-
+ bleword in storage addressed by RA.
+
+ EA is placed into register RA.
+
+ If RA=0, the instruction form is invalid.
+
+Special Registers Altered:
+
+ None
+
+# Store Floating-Point Double with Update Indexed
+
+X-Form
+
+* stfdux FRS,RA,RB
+
+Pseudo-code:
+
+ EA <- (RA) + (RB)
+ MEM(RA, 8)<- (FRS)
+ RA <- EA
+
+Description:
+
+ Let the effective address (EA) be the sum (RA)+(RB).
+
+ The contents of register FRS are stored into the dou-
+ bleword in storage addressed by RA.
+
+ EA is placed into register RA.
+
+ If RA=0, the instruction form is invalid.
+
+Special Registers Altered:
+
+ None
+