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libbpf: Complete riscv arch spec in bpf_tracing.h

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Add PARM6 through PARM8 definitions for RISC V (riscv) arch. Leave the
link for ABI doc for future reference.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Tested-by: Pu Lehui <pulehui@huawei.com> # RISC-V
Link: https://lore.kernel.org/bpf/20230120200914.3008030-8-andrii@kernel.org
This commit is contained in:
Andrii Nakryiko 2023-01-20 12:08:56 -08:00 committed by Daniel Borkmann
parent 7f60f5d85e
commit b13ed8ca7f
1 changed files with 7 additions and 0 deletions
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7
tools/lib/bpf/bpf_tracing.h
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@ -268,12 +268,19 @@ struct pt_regs___arm64 {
#elif defined(bpf_target_riscv)
/*
* https://github.com/riscv-non-isa/riscv-elf-psabi-doc/blob/master/riscv-cc.adoc#risc-v-calling-conventions
*/
#define __PT_REGS_CAST(x) ((const struct user_regs_struct *)(x))
#define __PT_PARM1_REG a0
#define __PT_PARM2_REG a1
#define __PT_PARM3_REG a2
#define __PT_PARM4_REG a3
#define __PT_PARM5_REG a4
#define __PT_PARM6_REG a5
#define __PT_PARM7_REG a6
#define __PT_PARM8_REG a7
#define __PT_RET_REG ra
#define __PT_FP_REG s0
#define __PT_RC_REG a0