Commit 07385998 authored by Vladimir Isaev's avatar Vladimir Isaev Committed by Andrii Nakryiko
Browse files

libbpf: Add ARC support to bpf_tracing.h 



Add PT_REGS macros suitable for ARCompact and ARCv2.

Signed-off-by: default avatarVladimir Isaev <isaev@synopsys.com>
Signed-off-by: default avatarSergey Matyukevich <geomatsi@gmail.com>
Signed-off-by: default avatarAndrii Nakryiko <andrii@kernel.org>
Acked-by: default avatarSong Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20220408224442.599566-1-geomatsi@gmail.com
parent 34ba23b4

tools/include/uapi/asm/bpf_perf_event.h

+2 −0
Original line number Diff line number Diff line 
#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)

tools/lib/bpf/bpf_tracing.h

+23 −0
Original line number Diff line number Diff line
@@ -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)