5.65 · exercise

Fill in the Blank: External Data

Fill in the missing pieces of data declared outside a function: a .bss reservation, .data values and string literals, cross-file symbol visibility, and one gdb print format.

0 of 5 correct

Fill in the Blank

Reserve 40 bytes of uninitialized space in the .bss section for a 10-element array of 4-byte integers.

myarray: . 10 * 4

Fill in the Blank

Declare a 64-bit integer initialized to 0 in the .data section.

c_m: . 0

Fill in the Blank

In gdb, print the low 32 bits of x19 as a character.

p/ $w19

Fill in the Blank

Make the label myvar_m visible to other files that are assembled separately and linked together.

. myvar_m

Fill in the Blank

Declare a null-terminated string literal in the .data section.

fmt: . "Hello, world!\n"