Commit 00883922 authored by Hengqi Chen's avatar Hengqi Chen Committed by Daniel Borkmann
Browse files

libbpf: Add LoongArch support to bpf_tracing.h 

Add PT_REGS macros for LoongArch ([0]).

  [0]: https://loongson.github.io/LoongArch-Documentation/LoongArch-ELF-ABI-EN.html



Signed-off-by: default avatarHengqi Chen <hengqi.chen@gmail.com>
Signed-off-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
Acked-by: default avatarHuacai Chen <chenhuacai@loongson.cn>
Link: https://lore.kernel.org/bpf/20221231100757.3177034-1-hengqi.chen@gmail.com
parent bb5747cf

tools/lib/bpf/bpf_tracing.h

+23 −0
Original line number Diff line number Diff line
@@ -32,6 +32,9 @@ 
#elif defined(__TARGET_ARCH_arc)

	#define bpf_target_arc

	#define bpf_target_defined

#elif defined(__TARGET_ARCH_loongarch)

	#define bpf_target_loongarch

	#define bpf_target_defined

#else



/* Fall back to what the compiler says */
@@ -62,6 +65,9 @@ 
#elif defined(__arc__)

	#define bpf_target_arc

	#define bpf_target_defined

#elif defined(__loongarch__)

	#define bpf_target_loongarch

	#define bpf_target_defined

#endif /* no compiler target */



#endif
@@ -258,6 +264,23 @@ struct pt_regs___arm64 { 
/* arc does not select ARCH_HAS_SYSCALL_WRAPPER. */

#define PT_REGS_SYSCALL_REGS(ctx) ctx



#elif defined(bpf_target_loongarch)



/* https://loongson.github.io/LoongArch-Documentation/LoongArch-ELF-ABI-EN.html */



#define __PT_PARM1_REG regs[4]

#define __PT_PARM2_REG regs[5]

#define __PT_PARM3_REG regs[6]

#define __PT_PARM4_REG regs[7]

#define __PT_PARM5_REG regs[8]

#define __PT_RET_REG regs[1]

#define __PT_FP_REG regs[22]

#define __PT_RC_REG regs[4]

#define __PT_SP_REG regs[3]

#define __PT_IP_REG csr_era

/* loongarch does not select ARCH_HAS_SYSCALL_WRAPPER. */

#define PT_REGS_SYSCALL_REGS(ctx) ctx



#endif



#if defined(bpf_target_defined)