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libbpf: Add ARC support to bpf_tracing.h

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Add PT_REGS macros suitable for ARCompact and ARCv2.

Signed-off-by: Vladimir Isaev <isaev@synopsys.com>
Signed-off-by: Sergey Matyukevich <geomatsi@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20220408224442.599566-1-geomatsi@gmail.com
This commit is contained in:
Vladimir Isaev 2022-04-09 01:44:42 +03:00 committed by Andrii Nakryiko
parent 34ba23b44c
commit 0738599856
2 changed files with 25 additions and 0 deletions
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2
tools/include/uapi/asm/bpf_perf_event.h
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@ -1,5 +1,7 @@
#if defined(__aarch64__)
#include "../../arch/arm64/include/uapi/asm/bpf_perf_event.h"
#elif defined(__arc__)
#include "../../arch/arc/include/uapi/asm/bpf_perf_event.h"
#elif defined(__s390__)
#include "../../arch/s390/include/uapi/asm/bpf_perf_event.h"
#elif defined(__riscv)

23
tools/lib/bpf/bpf_tracing.h
View File

@ -27,6 +27,9 @@
#elif defined(__TARGET_ARCH_riscv)
#define bpf_target_riscv
#define bpf_target_defined
#elif defined(__TARGET_ARCH_arc)
#define bpf_target_arc
#define bpf_target_defined
#else
/* Fall back to what the compiler says */
@ -54,6 +57,9 @@
#elif defined(__riscv) && __riscv_xlen == 64
#define bpf_target_riscv
#define bpf_target_defined
#elif defined(__arc__)
#define bpf_target_arc
#define bpf_target_defined
#endif /* no compiler target */
#endif
@ -233,6 +239,23 @@ struct pt_regs___arm64 {
/* riscv does not select ARCH_HAS_SYSCALL_WRAPPER. */
#define PT_REGS_SYSCALL_REGS(ctx) ctx
#elif defined(bpf_target_arc)
/* arc provides struct user_pt_regs instead of struct pt_regs to userspace */
#define __PT_REGS_CAST(x) ((const struct user_regs_struct *)(x))
#define __PT_PARM1_REG scratch.r0
#define __PT_PARM2_REG scratch.r1
#define __PT_PARM3_REG scratch.r2
#define __PT_PARM4_REG scratch.r3
#define __PT_PARM5_REG scratch.r4
#define __PT_RET_REG scratch.blink
#define __PT_FP_REG __unsupported__
#define __PT_RC_REG scratch.r0
#define __PT_SP_REG scratch.sp
#define __PT_IP_REG scratch.ret
/* arc does not select ARCH_HAS_SYSCALL_WRAPPER. */
#define PT_REGS_SYSCALL_REGS(ctx) ctx
#endif
#if defined(bpf_target_defined)