From: Hengqi Chen <hengqi.chen@gmail.com>
To: bpf@vger.kernel.org, loongarch@lists.linux.dev, andrii@kernel.org
Cc: hengqi.chen@gmail.com
Subject: [PATCH bpf-next] libbpf: Add LoongArch support to bpf_tracing.h
Date: Sun, 25 Dec 2022 20:01:38 +0800 [thread overview]
Message-ID: <20221225120138.1236072-1-hengqi.chen@gmail.com> (raw)
Add PT_REGS macros for LoongArch64 ([0]).
[0]: https://loongson.github.io/LoongArch-Documentation/LoongArch-ELF-ABI-EN.html
Signed-off-by: Hengqi Chen <hengqi.chen@gmail.com>
---
tools/lib/bpf/bpf_tracing.h | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/tools/lib/bpf/bpf_tracing.h b/tools/lib/bpf/bpf_tracing.h
index 2972dc25ff72..5a8a0830d133 100644
--- a/tools/lib/bpf/bpf_tracing.h
+++ b/tools/lib/bpf/bpf_tracing.h
@@ -32,6 +32,9 @@
#elif defined(__TARGET_ARCH_arc)
#define bpf_target_arc
#define bpf_target_defined
+#elif defined(__TARGET_ARCH_loongarch)
+ #define bpf_target_loongarch
+ #define bpf_target_defined
#else
/* Fall back to what the compiler says */
@@ -62,6 +65,9 @@
#elif defined(__arc__)
#define bpf_target_arc
#define bpf_target_defined
+#elif defined(__loongarch__) && __loongarch_grlen == 64
+ #define bpf_target_loongarch
+ #define bpf_target_defined
#endif /* no compiler target */
#endif
@@ -258,6 +264,21 @@ struct pt_regs___arm64 {
/* arc does not select ARCH_HAS_SYSCALL_WRAPPER. */
#define PT_REGS_SYSCALL_REGS(ctx) ctx
+#elif defined(bpf_target_loongarch)
+
+#define __PT_PARM1_REG regs[4]
+#define __PT_PARM2_REG regs[5]
+#define __PT_PARM3_REG regs[6]
+#define __PT_PARM4_REG regs[7]
+#define __PT_PARM5_REG regs[8]
+#define __PT_RET_REG regs[1]
+#define __PT_FP_REG regs[22]
+#define __PT_RC_REG regs[4]
+#define __PT_SP_REG regs[3]
+#define __PT_IP_REG csr_era
+/* loongarch does not select ARCH_HAS_SYSCALL_WRAPPER. */
+#define PT_REGS_SYSCALL_REGS(ctx) ctx
+
#endif
#if defined(bpf_target_defined)
--
2.31.1
next reply other threads:[~2022-12-25 12:01 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-25 12:01 Hengqi Chen [this message]
2022-12-27 0:13 ` [PATCH bpf-next] libbpf: Add LoongArch support to bpf_tracing.h WANG Xuerui
2022-12-29 23:11 ` Andrii Nakryiko
-- strict thread matches above, loose matches on Subject: below --
2022-12-31 10:07 Hengqi Chen
2023-01-03 6:53 ` Huacai Chen
2023-01-03 12:28 ` Daniel Borkmann
2023-01-03 12:31 ` Huacai Chen
2023-01-03 15:50 ` patchwork-bot+netdevbpf
2022-12-12 9:11 Hengqi Chen
2022-12-13 0:17 ` Andrii Nakryiko
2022-12-13 22:09 ` Andrii Nakryiko
2022-12-14 2:07 ` Hengqi Chen
2022-12-11 7:16 Hengqi Chen
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