Commit 2eb2be30 authored by Andrii Nakryiko's avatar Andrii Nakryiko Committed by Daniel Borkmann
Browse files

libbpf: Complete powerpc spec in bpf_tracing.h 



Add definitions of PARM6 through PARM8 for powerpc architecture. Add
also a link to a functiona call sequence documentation for future reference.

Signed-off-by: default avatarAndrii Nakryiko <andrii@kernel.org>
Signed-off-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20230120200914.3008030-6-andrii@kernel.org
parent 1222445a

tools/lib/bpf/bpf_tracing.h

+8 −0
Original line number Diff line number Diff line
@@ -222,11 +222,19 @@ struct pt_regs___arm64 { 


#elif defined(bpf_target_powerpc)



/*

 * http://refspecs.linux-foundation.org/elf/elfspec_ppc.pdf (page 3-14,

 * section "Function Calling Sequence")

 */



#define __PT_PARM1_REG gpr[3]

#define __PT_PARM2_REG gpr[4]

#define __PT_PARM3_REG gpr[5]

#define __PT_PARM4_REG gpr[6]

#define __PT_PARM5_REG gpr[7]

#define __PT_PARM6_REG gpr[8]

#define __PT_PARM7_REG gpr[9]

#define __PT_PARM8_REG gpr[10]

#define __PT_RET_REG regs[31]

#define __PT_FP_REG __unsupported__

#define __PT_RC_REG gpr[3]