is an optional condition code.
is an optional instruction width specifier to force the use of a 32-bit
Binstruction in T32.
is a PC-relative expression.
B instruction causes a branch to
Instruction availability and branch ranges
The following table shows the branch ranges that are available in A32 and T32 code. Instructions that are not shown in this table are not available.
Extending branch ranges
B instructions haverestricted ranges from the address of the current instruction. However,you can use these instructions even if
label isout of range. Often you do not know where the linker places
label.When necessary, the linker adds code to enable longer branches. Theadded code is called a veneer.
B in T32
You can use the
.W width specifier to force
B to generate a 32-bit instruction in T32 code.
B.W always generates a 32-bit instruction, even if the target could be reached using a 16-bit instruction.
For forward references,
.W always generates a 16-bit instruction in T32 code, even if that results in failure for a target that could be reached using a 32-bit T32 instruction.
B instruction does not changethe flags.
See the earlier table for details of availability of the