Renesas M32R-FPU - Manual (Page 64)

3
3-26 M32R-FPU Software Manual (Rev.1.01)
BRA BRA
branch instruction
Branch
[Mnemonic]
(1) BRA pcdisp8
(2) BRA pcdisp24
[Function]
Branch
(1) PC = ( PC & 0xfffffffc ) + ( ( ( signed char ) pcdisp8 ) << 2 );
(2) PC = ( PC & 0xfffffffc ) + ( sign_extend ( pcdisp24 ) << 2 );
where
#define sign_extend(x) ( ( ( signed ) ( (x)<< 8 ) ) >>8 )
[Description]
BRA causes an unconditional branch to the address specified by the label.
There are two instruction formats; this allows software, such as an assembler, to decide on the
better format.
The condition bit (C) is unchanged.
[EIT occurrence]
None
[Encoding]
1111 1111
1111 0111
BRA pcdisp24
BRA pcdisp8 pcdisp8
pcdisp24
INSTRUCTIONS
3.2 Instruction description