mirror of
https://github.com/bminor/binutils-gdb.git
synced 2025-12-05 15:15:42 +00:00
c0852af056
DBNZ instruction decrements its source register operand, and if the result is non-zero it branches to the location defined by a signed half-word displacement operand. DBNZ instruction is in BRANCH class as other branch instrucitons like B, Bcc, etc. However, DBNZ is the only branch instruction that stores a branch offset in the second operand. Thus it must be placed in a distinct class and treated differently. For example, current logic of arc_insn_get_branch_target in GDB assumes that a branch offset is always stored in the first operand for BRANCH class and it's wrong for DBNZ. include/ChangeLog: 2024-02-14 Yuriy Kolerov <ykolerov@synopsys.com> * opcode/arc.h (enum insn_class_t): Add DBNZ class. opcodes/ChangeLog: 2024-02-14 Yuriy Kolerov <ykolerov@synopsys.com> * arc-tbl.h (dbnz): Use "DBNZ" class. * arc-dis.c (arc_opcode_to_insn_type): Handle "DBNZ" class. gas/ChangeLog: 2024-02-14 Yuriy Kolerov <ykolerov@synopsys.com> * config/tc-arc.c (is_br_jmp_insn_p): Add check against "DBNZ".