diff options
| author | Andrii Nakryiko <andrii@kernel.org> | 2023-01-20 23:08:51 +0300 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2023-01-23 22:52:59 +0300 |
| commit | 013290329a0707c9900f86a743dce70d6c345330 (patch) | |
| tree | d81b717f331901379f001c0f0457880a22b5d289 /tools/lib | |
| parent | 3c59623d82947c8bfcc2fbf34c5eab02493b3b28 (diff) | |
| download | linux-013290329a0707c9900f86a743dce70d6c345330.tar.xz | |
libbpf: Add 6th argument support for x86-64 in bpf_tracing.h
Add r9 as register containing 6th argument on x86-64 architecture, as
per its ABI. Add also a link to a page describing ABI for easier future
reference.
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20230120200914.3008030-3-andrii@kernel.org
Diffstat (limited to 'tools/lib')
| -rw-r--r-- | tools/lib/bpf/bpf_tracing.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/tools/lib/bpf/bpf_tracing.h b/tools/lib/bpf/bpf_tracing.h index ef17d8fdd9d6..a47504c2f3cb 100644 --- a/tools/lib/bpf/bpf_tracing.h +++ b/tools/lib/bpf/bpf_tracing.h @@ -78,6 +78,10 @@ #if defined(bpf_target_x86) +/* + * https://en.wikipedia.org/wiki/X86_calling_conventions#System_V_AMD64_ABI + */ + #if defined(__KERNEL__) || defined(__VMLINUX_H__) #define __PT_PARM1_REG di @@ -85,6 +89,7 @@ #define __PT_PARM3_REG dx #define __PT_PARM4_REG cx #define __PT_PARM5_REG r8 +#define __PT_PARM6_REG r9 #define __PT_RET_REG sp #define __PT_FP_REG bp #define __PT_RC_REG ax @@ -115,6 +120,7 @@ #define __PT_PARM3_REG rdx #define __PT_PARM4_REG rcx #define __PT_PARM5_REG r8 +#define __PT_PARM6_REG r9 #define __PT_RET_REG rsp #define __PT_FP_REG rbp #define __PT_RC_REG rax |