[PATCH v2 bpf-next 21/25] libbpf: define riscv syscall regs spec in bpf_tracing.h

[Andrii Nakryiko <andrii@xxxxxxxxxx>]

Define explicit table of registers used for syscall argument passing.

Tested-by: Pu Lehui <pulehui@xxxxxxxxxx> # RISC-V
Signed-off-by: Andrii Nakryiko <andrii@xxxxxxxxxx>
---
 tools/lib/bpf/bpf_tracing.h | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/tools/lib/bpf/bpf_tracing.h b/tools/lib/bpf/bpf_tracing.h
index a2db267a6bce..047dc84c7cc9 100644
--- a/tools/lib/bpf/bpf_tracing.h
+++ b/tools/lib/bpf/bpf_tracing.h
@@ -359,13 +359,21 @@ struct pt_regs___arm64 {
 #define __PT_PARM6_REG a5
 #define __PT_PARM7_REG a6
 #define __PT_PARM8_REG a7
+
+/* riscv does not select ARCH_HAS_SYSCALL_WRAPPER. */
+#define PT_REGS_SYSCALL_REGS(ctx) ctx
+#define __PT_PARM1_SYSCALL_REG __PT_PARM1_REG
+#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
+
 #define __PT_RET_REG ra
 #define __PT_FP_REG s0
 #define __PT_RC_REG a0
 #define __PT_SP_REG sp
 #define __PT_IP_REG pc
-/* riscv does not select ARCH_HAS_SYSCALL_WRAPPER. */
-#define PT_REGS_SYSCALL_REGS(ctx) ctx
 
 #elif defined(bpf_target_arc)
 
-- 
2.30.2