Arm VERSION 1.2 Manuel d'utilisateur Page 229

  • Télécharger
  • Ajouter à mon manuel
  • Imprimer
  • Page
    / 360
  • Table des matières
  • MARQUE LIVRES
  • Noté. / 5. Basé sur avis des utilisateurs
Vue de la page 228
Thumb Instruction Reference
ARM DUI 0068B Copyright © 2000, 2001 ARM Limited. All rights reserved. 5-35
5.4.3 BX
Branch, and optionally exchange instruction set.
Syntax
BX Rm
where:
Rm
is an ARM register containing the address to branch to.
Bit 0 of
Rm
is not used as part of the address.
If bit 0 of
Rm
is clear:
bit 1 must also be clear
the instruction clears the T flag in the CPSR, and the code at the
destination is interpreted as ARM code.
Usage
The
BX
instruction causes a branch to the address held in
Rm
, and changes instruction set
to Thumb if bit 0 of
Rm
is set.
Architectures
This instruction is available in all T variants of the ARM architecture.
Examples
BX r5
Vue de la page 228
1 2 ... 224 225 226 227 228 229 230 231 232 233 234 ... 359 360

Commentaires sur ces manuels

Pas de commentaire