diff mbox series

[RESEND,v4,4/8] powerpc/ppc-opcode: introduce PPC_RAW_BRANCH() macro

Message ID 20211012123056.485795-5-hbathini@linux.ibm.com (mailing list archive)
State Accepted
Headers show
Series bpf powerpc: Add BPF_PROBE_MEM support in powerpc JIT compiler | expand
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Commit Message

Hari Bathini Oct. 12, 2021, 12:30 p.m. UTC 
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 mbox series

Patch

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 */