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| author | Andrii Nakryiko <andrii@kernel.org> | 2023-01-20 23:09:08 +0300 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2023-01-23 22:53:01 +0300 |
| commit | c1cc01a2d1d1d94079fa87ba44c34bd7bdf9175d (patch) | |
| tree | a8e05a15735556d74dc12cb852fbb75fd7e4833b /tools/lib | |
| parent | cfd0bbe91536095f5491e9ac71fb11304dd87dd2 (diff) | |
| download | linux-c1cc01a2d1d1d94079fa87ba44c34bd7bdf9175d.tar.xz | |
libbpf: Define powerpc syscall regs spec in bpf_tracing.h
Define explicit table of registers used for syscall argument passing.
Note that 7th arg is supported on 32-bit powerpc architecture, by not on
powerpc64.
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20230120200914.3008030-20-andrii@kernel.org
Diffstat (limited to 'tools/lib')
| -rw-r--r-- | tools/lib/bpf/bpf_tracing.h | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/tools/lib/bpf/bpf_tracing.h b/tools/lib/bpf/bpf_tracing.h index a3da63b74b0b..b3647c4a6c0c 100644 --- a/tools/lib/bpf/bpf_tracing.h +++ b/tools/lib/bpf/bpf_tracing.h @@ -294,13 +294,24 @@ struct pt_regs___arm64 { #define __PT_PARM6_REG gpr[8] #define __PT_PARM7_REG gpr[9] #define __PT_PARM8_REG gpr[10] + +/* powerpc does not select ARCH_HAS_SYSCALL_WRAPPER. */ +#define PT_REGS_SYSCALL_REGS(ctx) ctx +#define __PT_PARM1_SYSCALL_REG orig_gpr3 +#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 +#if !defined(__arch64__) +#define __PT_PARM7_SYSCALL_REG __PT_PARM7_REG /* only powerpc (not powerpc64) */ +#endif + #define __PT_RET_REG regs[31] #define __PT_FP_REG __unsupported__ #define __PT_RC_REG gpr[3] #define __PT_SP_REG sp #define __PT_IP_REG nip -/* powerpc does not select ARCH_HAS_SYSCALL_WRAPPER. */ -#define PT_REGS_SYSCALL_REGS(ctx) ctx #elif defined(bpf_target_sparc) |