Renesas M32R-FPU Manual Do Utilizador

3

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M32R-FPU Software Manual (Rev.1.01)

branch instruction

 

 BRA  pcdisp8

 

 BRA  pcdisp24

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 )

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.

None

INSTRUCTIONS

3.2 Instruction description