What does the following code do?
TEQ r0,#0
RSBMI r0,r0,#0
These two instructions take the absolute value of a two’s complement integer. The sign is first tested by the test
equal instruction and then a conditional reverse subtract subtracts r0 from 0 if the test was negative (i.e., the
negative is negated to create the positive absolute value).
TEQ r0,#0 ;test sign of r0
RSBMI r0,r0,#0 ;if negative then r0 = 0 – r0 (negate it)
You might also like to view...
In C++, some of the following are legal identifiers. Which? Why?
a. 9xyz b. Xyz c. X+yz d. xy_z e. xyz!
Answer the following questions true (T) or false (F)
1. The PUSH instruction copies a value from the stack to an operand before decrementing the stack pointer. 2. In 32-bit mode, immediate values pushed on the stack are always 32 bits long. 3. The PUSHAD instruction pushes all the 32-bit general-purpose registers on the stack.
A preview of the print layout is displayed in _____.
A. the right pane B. a new window C. the left pane D. the bottom pane
The JList GUI component generates events that call the actionStateChanged method.
Answer the following statement true (T) or false (F)