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author | Zi Shen Lim <zlim.lnx@gmail.com> | 2014-08-27 05:15:19 +0100 |
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committer | Will Deacon <will.deacon@arm.com> | 2014-09-08 14:39:19 +0100 |
commit | 345e0d35ecdd7aff31881462a6f7786fda3241d9 (patch) | |
tree | a8f0b185fb6b0a41666e3265654bd4655f7823db /arch/arm64/kernel/insn.c | |
parent | c0cafbae20d2878883ec3c06d6ea30ff38a6bf92 (diff) | |
download | linux-stable-345e0d35ecdd7aff31881462a6f7786fda3241d9.tar.gz linux-stable-345e0d35ecdd7aff31881462a6f7786fda3241d9.tar.bz2 linux-stable-345e0d35ecdd7aff31881462a6f7786fda3241d9.zip |
arm64: introduce aarch64_insn_gen_cond_branch_imm()
Introduce function to generate conditional branch (immediate)
instructions.
Signed-off-by: Zi Shen Lim <zlim.lnx@gmail.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64/kernel/insn.c')
-rw-r--r-- | arch/arm64/kernel/insn.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/arm64/kernel/insn.c b/arch/arm64/kernel/insn.c index 67979364daf6..b65edc02cf81 100644 --- a/arch/arm64/kernel/insn.c +++ b/arch/arm64/kernel/insn.c @@ -380,6 +380,23 @@ u32 aarch64_insn_gen_comp_branch_imm(unsigned long pc, unsigned long addr, offset >> 2); } +u32 aarch64_insn_gen_cond_branch_imm(unsigned long pc, unsigned long addr, + enum aarch64_insn_condition cond) +{ + u32 insn; + long offset; + + offset = branch_imm_common(pc, addr, SZ_1M); + + insn = aarch64_insn_get_bcond_value(); + + BUG_ON(cond < AARCH64_INSN_COND_EQ || cond > AARCH64_INSN_COND_AL); + insn |= cond; + + return aarch64_insn_encode_immediate(AARCH64_INSN_IMM_19, insn, + offset >> 2); +} + u32 __kprobes aarch64_insn_gen_hint(enum aarch64_insn_hint_op op) { return aarch64_insn_get_hint_value() | op; |