9.18.2.2 Relocatable Expression Modifiers
The assembler supports several modifiers when using relocatable addresses in LM32 instruction operands. The general syntax is the following:
modifier(relocatable-expression)
-
lo
- This modifier allows you to use bits 0 through 15 of an address expression as 16 bit relocatable expression.
-
hi
-
This modifier allows you to use bits 16 through 23 of an address expression as 16 bit relocatable expression.
For example
ori r4, r4, lo(sym+10)
orhi r4, r4, hi(sym+10)
-
gp
-
This modified creates a 16-bit relocatable expression that is the offset of the symbol from the global pointer.
mva r4, gp(sym)
-
got
-
This modifier places a symbol in the GOT and creates a 16-bit relocatable expression that is the offset into the GOT of this symbol.
lw r4, (gp+got(sym))
-
gotofflo16
- This modifier allows you to use the bits 0 through 15 of an address which is an offset from the GOT.
-
gotoffhi16
-
This modifier allows you to use the bits 16 through 31 of an address which is an offset from the GOT.
orhi r4, r4, gotoffhi16(lsym)
addi r4, r4, gotofflo16(lsym)