[PATCH 5.10 008/139] powerpc/bpf: Move common helpers into bpf_jit.h

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From: Christophe Leroy <christophe.leroy@xxxxxxxxxx>

[ Upstream commit f1b1583d5faa86cb3dcb7b740594868debad7c30 ]

Move functions bpf_flush_icache(), bpf_is_seen_register() and
bpf_set_seen_register() in order to reuse them in future
bpf_jit_comp32.c

Signed-off-by: Christophe Leroy <christophe.leroy@xxxxxxxxxx>
Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/28e8d5a75e64807d7e9d39a4b52658755e259f8c.1616430991.git.christophe.leroy@xxxxxxxxxx
Stable-dep-of: 71f656a50176 ("bpf: Fix to preserve reg parent/live fields when copying range info")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 arch/powerpc/net/bpf_jit.h        | 35 +++++++++++++++++++++++++++++++
 arch/powerpc/net/bpf_jit64.h      | 19 -----------------
 arch/powerpc/net/bpf_jit_comp64.c | 16 --------------
 3 files changed, 35 insertions(+), 35 deletions(-)

diff --git a/arch/powerpc/net/bpf_jit.h b/arch/powerpc/net/bpf_jit.h
index 1a5b4da8a235..cd9aab6ec2c5 100644
--- a/arch/powerpc/net/bpf_jit.h
+++ b/arch/powerpc/net/bpf_jit.h
@@ -117,6 +117,41 @@
 #define COND_LT		(CR0_LT | COND_CMP_TRUE)
 #define COND_LE		(CR0_GT | COND_CMP_FALSE)
 
+#define SEEN_FUNC	0x1000 /* might call external helpers */
+#define SEEN_STACK	0x2000 /* uses BPF stack */
+#define SEEN_TAILCALL	0x4000 /* uses tail calls */
+
+struct codegen_context {
+	/*
+	 * This is used to track register usage as well
+	 * as calls to external helpers.
+	 * - register usage is tracked with corresponding
+	 *   bits (r3-r10 and r27-r31)
+	 * - rest of the bits can be used to track other
+	 *   things -- for now, we use bits 16 to 23
+	 *   encoded in SEEN_* macros above
+	 */
+	unsigned int seen;
+	unsigned int idx;
+	unsigned int stack_size;
+};
+
+static inline void bpf_flush_icache(void *start, void *end)
+{
+	smp_wmb();	/* smp write barrier */
+	flush_icache_range((unsigned long)start, (unsigned long)end);
+}
+
+static inline bool bpf_is_seen_register(struct codegen_context *ctx, int i)
+{
+	return ctx->seen & (1 << (31 - i));
+}
+
+static inline void bpf_set_seen_register(struct codegen_context *ctx, int i)
+{
+	ctx->seen |= 1 << (31 - i);
+}
+
 #endif
 
 #endif
diff --git a/arch/powerpc/net/bpf_jit64.h b/arch/powerpc/net/bpf_jit64.h
index 4d164e865b39..201b83bfa869 100644
--- a/arch/powerpc/net/bpf_jit64.h
+++ b/arch/powerpc/net/bpf_jit64.h
@@ -86,25 +86,6 @@ static const int b2p[] = {
 				} while(0)
 #define PPC_BPF_STLU(r, base, i) do { EMIT(PPC_RAW_STDU(r, base, i)); } while(0)
 
-#define SEEN_FUNC	0x1000 /* might call external helpers */
-#define SEEN_STACK	0x2000 /* uses BPF stack */
-#define SEEN_TAILCALL	0x4000 /* uses tail calls */
-
-struct codegen_context {
-	/*
-	 * This is used to track register usage as well
-	 * as calls to external helpers.
-	 * - register usage is tracked with corresponding
-	 *   bits (r3-r10 and r27-r31)
-	 * - rest of the bits can be used to track other
-	 *   things -- for now, we use bits 16 to 23
-	 *   encoded in SEEN_* macros above
-	 */
-	unsigned int seen;
-	unsigned int idx;
-	unsigned int stack_size;
-};
-
 #endif /* !__ASSEMBLY__ */
 
 #endif
diff --git a/arch/powerpc/net/bpf_jit_comp64.c b/arch/powerpc/net/bpf_jit_comp64.c
index 7da59ddc90dd..ebad2c79cd6f 100644
--- a/arch/powerpc/net/bpf_jit_comp64.c
+++ b/arch/powerpc/net/bpf_jit_comp64.c
@@ -24,22 +24,6 @@ static void bpf_jit_fill_ill_insns(void *area, unsigned int size)
 	memset32(area, BREAKPOINT_INSTRUCTION, size/4);
 }
 
-static inline void bpf_flush_icache(void *start, void *end)
-{
-	smp_wmb();
-	flush_icache_range((unsigned long)start, (unsigned long)end);
-}
-
-static inline bool bpf_is_seen_register(struct codegen_context *ctx, int i)
-{
-	return ctx->seen & (1 << (31 - i));
-}
-
-static inline void bpf_set_seen_register(struct codegen_context *ctx, int i)
-{
-	ctx->seen |= 1 << (31 - i);
-}
-
 static inline bool bpf_has_stack_frame(struct codegen_context *ctx)
 {
 	/*
-- 
2.39.0






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