A simple question about ARM fraud! !!

樱一机器猫

MAP 4096
consta FIELD 4
constb FIELD 4
x FIELD 8
y FIELD 8
string FIELD 256
LDR R6, consta [52RD.com]
Why does the above command only access the data field of the 4K address range before or after the LDR instruction? ? ?

懒懒鱼

Check ARM information

guanmushan

This is stipulated in the instruction system. When LDR reads constants from the literal pool, the offset from the PC pointer to the literal pool must be less than 4KB.