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riscv, libbpf: Add RISC-V (RV64) support to bpf_tracing.h

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Add macros for 64-bit RISC-V PT_REGS to bpf_tracing.h.

Signed-off-by: Björn Töpel <bjorn@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20211028161057.520552-4-bjorn@kernel.org
This commit is contained in:
Björn Töpel 2021-10-28 18:10:56 +02:00 committed by Daniel Borkmann
parent b390d69831
commit 589fed479b
1 changed files with 32 additions and 0 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

32
tools/lib/bpf/bpf_tracing.h
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@ -24,6 +24,9 @@
#elif defined(__TARGET_ARCH_sparc) #elif defined(__TARGET_ARCH_sparc)
#define bpf_target_sparc #define bpf_target_sparc
#define bpf_target_defined #define bpf_target_defined
#elif defined(__TARGET_ARCH_riscv)
#define bpf_target_riscv
#define bpf_target_defined
#else #else
/* Fall back to what the compiler says */ /* Fall back to what the compiler says */
@ -48,6 +51,9 @@
#elif defined(__sparc__) #elif defined(__sparc__)
#define bpf_target_sparc #define bpf_target_sparc
#define bpf_target_defined #define bpf_target_defined
#elif defined(__riscv) && __riscv_xlen == 64
#define bpf_target_riscv
#define bpf_target_defined
#endif /* no compiler target */ #endif /* no compiler target */
#endif #endif
@ -288,6 +294,32 @@ struct pt_regs;
#define PT_REGS_IP_CORE(x) BPF_CORE_READ((x), pc) #define PT_REGS_IP_CORE(x) BPF_CORE_READ((x), pc)
#endif #endif
#elif defined(bpf_target_riscv)
struct pt_regs;
#define PT_REGS_RV const volatile struct user_regs_struct
#define PT_REGS_PARM1(x) (((PT_REGS_RV *)(x))->a0)
#define PT_REGS_PARM2(x) (((PT_REGS_RV *)(x))->a1)
#define PT_REGS_PARM3(x) (((PT_REGS_RV *)(x))->a2)
#define PT_REGS_PARM4(x) (((PT_REGS_RV *)(x))->a3)
#define PT_REGS_PARM5(x) (((PT_REGS_RV *)(x))->a4)
#define PT_REGS_RET(x) (((PT_REGS_RV *)(x))->ra)
#define PT_REGS_FP(x) (((PT_REGS_RV *)(x))->s5)
#define PT_REGS_RC(x) (((PT_REGS_RV *)(x))->a5)
#define PT_REGS_SP(x) (((PT_REGS_RV *)(x))->sp)
#define PT_REGS_IP(x) (((PT_REGS_RV *)(x))->epc)
#define PT_REGS_PARM1_CORE(x) BPF_CORE_READ((PT_REGS_RV *)(x), a0)
#define PT_REGS_PARM2_CORE(x) BPF_CORE_READ((PT_REGS_RV *)(x), a1)
#define PT_REGS_PARM3_CORE(x) BPF_CORE_READ((PT_REGS_RV *)(x), a2)
#define PT_REGS_PARM4_CORE(x) BPF_CORE_READ((PT_REGS_RV *)(x), a3)
#define PT_REGS_PARM5_CORE(x) BPF_CORE_READ((PT_REGS_RV *)(x), a4)
#define PT_REGS_RET_CORE(x) BPF_CORE_READ((PT_REGS_RV *)(x), ra)
#define PT_REGS_FP_CORE(x) BPF_CORE_READ((PT_REGS_RV *)(x), fp)
#define PT_REGS_RC_CORE(x) BPF_CORE_READ((PT_REGS_RV *)(x), a5)
#define PT_REGS_SP_CORE(x) BPF_CORE_READ((PT_REGS_RV *)(x), sp)
#define PT_REGS_IP_CORE(x) BPF_CORE_READ((PT_REGS_RV *)(x), epc)
#endif #endif
#if defined(bpf_target_powerpc) #if defined(bpf_target_powerpc)