From: Andrii Nakryiko <andrii@kernel.org>
To: <bpf@vger.kernel.org>, <ast@kernel.org>, <daniel@iogearbox.net>
Cc: <andrii@kernel.org>, <kernel-team@fb.com>
Subject: [PATCH v2 bpf-next 19/25] libbpf: define powerpc syscall regs spec in bpf_tracing.h
Date: Fri, 20 Jan 2023 12:09:08 -0800 [thread overview]
Message-ID: <20230120200914.3008030-20-andrii@kernel.org> (raw)
In-Reply-To: <20230120200914.3008030-1-andrii@kernel.org>
Define explicit table of registers used for syscall argument passing.
Note that 7th arg is supported on 32-bit powerpc architecture, by not on
powerpc64.
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
---
tools/lib/bpf/bpf_tracing.h | 15 +++++++++++++--
1 file changed, 13 insertions(+), 2 deletions(-)
diff --git a/tools/lib/bpf/bpf_tracing.h b/tools/lib/bpf/bpf_tracing.h
index a3da63b74b0b..b3647c4a6c0c 100644
--- a/tools/lib/bpf/bpf_tracing.h
+++ b/tools/lib/bpf/bpf_tracing.h
@@ -294,13 +294,24 @@ struct pt_regs___arm64 {
#define __PT_PARM6_REG gpr[8]
#define __PT_PARM7_REG gpr[9]
#define __PT_PARM8_REG gpr[10]
+
+/* powerpc does not select ARCH_HAS_SYSCALL_WRAPPER. */
+#define PT_REGS_SYSCALL_REGS(ctx) ctx
+#define __PT_PARM1_SYSCALL_REG orig_gpr3
+#define __PT_PARM2_SYSCALL_REG __PT_PARM2_REG
+#define __PT_PARM3_SYSCALL_REG __PT_PARM3_REG
+#define __PT_PARM4_SYSCALL_REG __PT_PARM4_REG
+#define __PT_PARM5_SYSCALL_REG __PT_PARM5_REG
+#define __PT_PARM6_SYSCALL_REG __PT_PARM6_REG
+#if !defined(__arch64__)
+#define __PT_PARM7_SYSCALL_REG __PT_PARM7_REG /* only powerpc (not powerpc64) */
+#endif
+
#define __PT_RET_REG regs[31]
#define __PT_FP_REG __unsupported__
#define __PT_RC_REG gpr[3]
#define __PT_SP_REG sp
#define __PT_IP_REG nip
-/* powerpc does not select ARCH_HAS_SYSCALL_WRAPPER. */
-#define PT_REGS_SYSCALL_REGS(ctx) ctx
#elif defined(bpf_target_sparc)
--
2.30.2
next prev parent reply other threads:[~2023-01-20 20:10 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-20 20:08 [PATCH v2 bpf-next 00/25] libbpf: extend [ku]probe and syscall argument tracing support Andrii Nakryiko
2023-01-20 20:08 ` [PATCH v2 bpf-next 01/25] libbpf: add support for fetching up to 8 arguments in kprobes Andrii Nakryiko
2023-01-20 20:08 ` [PATCH v2 bpf-next 02/25] libbpf: add 6th argument support for x86-64 in bpf_tracing.h Andrii Nakryiko
2023-01-20 20:08 ` [PATCH v2 bpf-next 03/25] libbpf: fix arm and arm64 specs " Andrii Nakryiko
2023-01-20 20:08 ` [PATCH v2 bpf-next 04/25] libbpf: complete mips spec " Andrii Nakryiko
2023-01-20 20:08 ` [PATCH v2 bpf-next 05/25] libbpf: complete powerpc " Andrii Nakryiko
2023-01-20 20:08 ` [PATCH v2 bpf-next 06/25] libbpf: complete sparc " Andrii Nakryiko
2023-01-20 20:08 ` [PATCH v2 bpf-next 07/25] libbpf: complete riscv arch " Andrii Nakryiko
2023-01-20 20:08 ` [PATCH v2 bpf-next 08/25] libbpf: fix and complete ARC " Andrii Nakryiko
2023-01-20 20:08 ` [PATCH v2 bpf-next 09/25] libbpf: complete LoongArch (loongarch) " Andrii Nakryiko
2023-01-20 20:08 ` [PATCH v2 bpf-next 10/25] libbpf: add BPF_UPROBE and BPF_URETPROBE macro aliases Andrii Nakryiko
2023-01-20 20:09 ` [PATCH v2 bpf-next 11/25] selftests/bpf: validate arch-specific argument registers limits Andrii Nakryiko
2023-01-20 20:09 ` [PATCH v2 bpf-next 12/25] libbpf: improve syscall tracing support in bpf_tracing.h Andrii Nakryiko
2023-01-20 20:09 ` [PATCH v2 bpf-next 13/25] libbpf: define x86-64 syscall regs spec " Andrii Nakryiko
2023-01-20 20:09 ` [PATCH v2 bpf-next 14/25] libbpf: define i386 " Andrii Nakryiko
2023-01-20 20:09 ` [PATCH v2 bpf-next 15/25] libbpf: define s390x " Andrii Nakryiko
2023-01-20 20:09 ` [PATCH v2 bpf-next 16/25] libbpf: define arm " Andrii Nakryiko
2023-01-20 20:09 ` [PATCH v2 bpf-next 17/25] libbpf: define arm64 " Andrii Nakryiko
2023-01-20 20:09 ` [PATCH v2 bpf-next 18/25] libbpf: define mips " Andrii Nakryiko
2023-01-20 20:09 ` Andrii Nakryiko [this message]
2023-01-20 20:09 ` [PATCH v2 bpf-next 20/25] libbpf: define sparc " Andrii Nakryiko
2023-01-20 20:09 ` [PATCH v2 bpf-next 21/25] libbpf: define riscv " Andrii Nakryiko
2023-01-20 20:09 ` [PATCH v2 bpf-next 22/25] libbpf: define arc " Andrii Nakryiko
2023-01-20 20:09 ` [PATCH v2 bpf-next 23/25] libbpf: define loongarch " Andrii Nakryiko
2023-01-20 20:09 ` [PATCH v2 bpf-next 24/25] selftests/bpf: add 6-argument syscall tracing test Andrii Nakryiko
2023-01-20 20:09 ` [PATCH v2 bpf-next 25/25] libbpf: clean up now not needed __PT_PARM{1-6}_SYSCALL_REG defaults Andrii Nakryiko
2023-01-23 20:10 ` [PATCH v2 bpf-next 00/25] libbpf: extend [ku]probe and syscall argument tracing support patchwork-bot+netdevbpf
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