From: Hari Bathini <hbathini@linux.ibm.com>
To: naveen.n.rao@linux.ibm.com, christophe.leroy@csgroup.eu,
mpe@ellerman.id.au, ast@kernel.org, daniel@iogearbox.net
Cc: songliubraving@fb.com, netdev@vger.kernel.org,
john.fastabend@gmail.com, andrii@kernel.org, kpsingh@kernel.org,
paulus@samba.org, yhs@fb.com, bpf@vger.kernel.org,
linuxppc-dev@lists.ozlabs.org, kafai@fb.com,
Hari Bathini <hbathini@linux.ibm.com>
Subject: [RESEND PATCH v4 4/8] powerpc/ppc-opcode: introduce PPC_RAW_BRANCH() macro
Date: Tue, 12 Oct 2021 18:00:52 +0530 [thread overview]
Message-ID: <20211012123056.485795-5-hbathini@linux.ibm.com> (raw)
In-Reply-To: <20211012123056.485795-1-hbathini@linux.ibm.com>
Define and use PPC_RAW_BRANCH() macro instead of open coding it. This
macro is used while adding BPF_PROBE_MEM support.
Signed-off-by: Hari Bathini <hbathini@linux.ibm.com>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
---
* No changes in v4.
arch/powerpc/include/asm/ppc-opcode.h | 2 ++
arch/powerpc/net/bpf_jit.h | 2 +-
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/include/asm/ppc-opcode.h b/arch/powerpc/include/asm/ppc-opcode.h
index baea657bc868..f50213e2a3e0 100644
--- a/arch/powerpc/include/asm/ppc-opcode.h
+++ b/arch/powerpc/include/asm/ppc-opcode.h
@@ -566,6 +566,8 @@
#define PPC_RAW_MTSPR(spr, d) (0x7c0003a6 | ___PPC_RS(d) | __PPC_SPR(spr))
#define PPC_RAW_EIEIO() (0x7c0006ac)
+#define PPC_RAW_BRANCH(addr) (PPC_INST_BRANCH | ((addr) & 0x03fffffc))
+
/* Deal with instructions that older assemblers aren't aware of */
#define PPC_BCCTR_FLUSH stringify_in_c(.long PPC_INST_BCCTR_FLUSH)
#define PPC_CP_ABORT stringify_in_c(.long PPC_RAW_CP_ABORT)
diff --git a/arch/powerpc/net/bpf_jit.h b/arch/powerpc/net/bpf_jit.h
index 7145b651fc2a..6a945f6211f4 100644
--- a/arch/powerpc/net/bpf_jit.h
+++ b/arch/powerpc/net/bpf_jit.h
@@ -31,7 +31,7 @@
pr_err_ratelimited("Branch offset 0x%lx (@%u) out of range\n", offset, ctx->idx); \
return -ERANGE; \
} \
- EMIT(PPC_INST_BRANCH | (offset & 0x03fffffc)); \
+ EMIT(PPC_RAW_BRANCH(offset)); \
} while (0)
/* blr; (unconditional 'branch' with link) to absolute address */
--
2.31.1
next prev parent reply other threads:[~2021-10-12 12:36 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-12 12:30 [RESEND PATCH v4 0/8] bpf powerpc: Add BPF_PROBE_MEM support in powerpc JIT compiler Hari Bathini
2021-10-12 12:30 ` [RESEND PATCH v4 1/8] bpf powerpc: Remove unused SEEN_STACK Hari Bathini
2021-10-12 12:30 ` [RESEND PATCH v4 2/8] bpf powerpc: Remove extra_pass from bpf_jit_build_body() Hari Bathini
2021-10-12 12:30 ` [RESEND PATCH v4 3/8] bpf powerpc: refactor JIT compiler code Hari Bathini
2021-10-12 12:30 ` Hari Bathini [this message]
2021-10-12 12:30 ` [RESEND PATCH v4 5/8] bpf ppc64: Add BPF_PROBE_MEM support for JIT Hari Bathini
2021-10-12 12:30 ` [RESEND PATCH v4 6/8] bpf ppc64: Access only if addr is kernel address Hari Bathini
2021-10-12 12:30 ` [RESEND PATCH v4 7/8] bpf ppc32: Add BPF_PROBE_MEM support for JIT Hari Bathini
2021-10-12 12:30 ` [RESEND PATCH v4 8/8] bpf ppc32: Access only if addr is kernel address Hari Bathini
2021-10-14 8:15 ` [RESEND PATCH v4 0/8] bpf powerpc: Add BPF_PROBE_MEM support in powerpc JIT compiler David Laight
2021-10-14 8:33 ` Christophe Leroy
2021-10-14 9:52 ` David Laight
2021-11-25 9:36 ` Michael Ellerman
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