From: Vladimir Isaev <isaev@xxxxxxxxxxxx>
Add PT_REGS macros suitable for ARCompact and ARCv2.
Signed-off-by: Vladimir Isaev <isaev@xxxxxxxxxxxx>
---
tools/include/uapi/asm/bpf_perf_event.h | 2 ++
tools/lib/bpf/bpf_tracing.h | 23 +++++++++++++++++++++++
2 files changed, 25 insertions(+)
diff --git a/tools/include/uapi/asm/bpf_perf_event.h b/tools/include/uapi/asm/bpf_perf_event.h
index 39acc149d843..d7dfeab0d71a 100644
--- a/tools/include/uapi/asm/bpf_perf_event.h
+++ b/tools/include/uapi/asm/bpf_perf_event.h
@@ -1,5 +1,7 @@
#if defined(__aarch64__)
#include "../../arch/arm64/include/uapi/asm/bpf_perf_event.h"
+#elif defined(__arc__)
+#include "../../arch/arc/include/uapi/asm/bpf_perf_event.h"
#elif defined(__s390__)
#include "../../arch/s390/include/uapi/asm/bpf_perf_event.h"
#elif defined(__riscv)
diff --git a/tools/lib/bpf/bpf_tracing.h b/tools/lib/bpf/bpf_tracing.h
index e3a8c947e89f..01ce121c302d 100644
--- a/tools/lib/bpf/bpf_tracing.h
+++ b/tools/lib/bpf/bpf_tracing.h
@@ -27,6 +27,9 @@
#elif defined(__TARGET_ARCH_riscv)
#define bpf_target_riscv
#define bpf_target_defined
+#elif defined(__TARGET_ARCH_arc)
+ #define bpf_target_arc
+ #define bpf_target_defined
#else
/* Fall back to what the compiler says */
@@ -54,6 +57,9 @@
#elif defined(__riscv) && __riscv_xlen == 64
#define bpf_target_riscv
#define bpf_target_defined
+#elif defined(__arc__)
+ #define bpf_target_arc
+ #define bpf_target_defined
#endif /* no compiler target */
#endif
@@ -233,6 +239,23 @@ struct pt_regs___arm64 {
/* riscv does not select ARCH_HAS_SYSCALL_WRAPPER. */
#define PT_REGS_SYSCALL_REGS(ctx) ctx
+#elif defined(bpf_target_arc)
+
+/* arc provides struct user_pt_regs instead of struct pt_regs to userspace */
+#define __PT_REGS_CAST(x) ((const struct user_regs_struct *)(x))
+#define __PT_PARM1_REG scratch.r0
+#define __PT_PARM2_REG scratch.r1
+#define __PT_PARM3_REG scratch.r2
+#define __PT_PARM4_REG scratch.r3
+#define __PT_PARM5_REG scratch.r4
+#define __PT_RET_REG scratch.blink
+#define __PT_FP_REG __unsupported__
+#define __PT_RC_REG scratch.r0
+#define __PT_SP_REG scratch.sp
+#define __PT_IP_REG scratch.ret
+/* arc does not select ARCH_HAS_SYSCALL_WRAPPER. */
+#define PT_REGS_SYSCALL_REGS(ctx) ctx
+
#endif
#if defined(bpf_target_defined)
--
2.35.1
