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bpf: Add sparc support to tools and samples.

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Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
This commit is contained in:
David S. Miller 2017-04-22 12:31:05 -07:00
parent 7a12b5031c
commit b0c47807d3
3 changed files with 24 additions and 0 deletions
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19
samples/bpf/bpf_helpers.h
View File

@ -146,11 +146,30 @@ static int (*bpf_skb_change_head)(void *, int len, int flags) =
#define PT_REGS_SP(x) ((x)->sp) #define PT_REGS_SP(x) ((x)->sp)
#define PT_REGS_IP(x) ((x)->nip) #define PT_REGS_IP(x) ((x)->nip)
#elif defined(__sparc__)
#define PT_REGS_PARM1(x) ((x)->u_regs[UREG_I0])
#define PT_REGS_PARM2(x) ((x)->u_regs[UREG_I1])
#define PT_REGS_PARM3(x) ((x)->u_regs[UREG_I2])
#define PT_REGS_PARM4(x) ((x)->u_regs[UREG_I3])
#define PT_REGS_PARM5(x) ((x)->u_regs[UREG_I4])
#define PT_REGS_RET(x) ((x)->u_regs[UREG_I7])
#define PT_REGS_RC(x) ((x)->u_regs[UREG_I0])
#define PT_REGS_SP(x) ((x)->u_regs[UREG_FP])
#if defined(__arch64__)
#define PT_REGS_IP(x) ((x)->tpc)
#else
#define PT_REGS_IP(x) ((x)->pc)
#endif
#endif #endif
#ifdef __powerpc__ #ifdef __powerpc__
#define BPF_KPROBE_READ_RET_IP(ip, ctx) ({ (ip) = (ctx)->link; }) #define BPF_KPROBE_READ_RET_IP(ip, ctx) ({ (ip) = (ctx)->link; })
#define BPF_KRETPROBE_READ_RET_IP BPF_KPROBE_READ_RET_IP #define BPF_KRETPROBE_READ_RET_IP BPF_KPROBE_READ_RET_IP
#elif defined(__sparc__)
#define BPF_KPROBE_READ_RET_IP(ip, ctx) ({ (ip) = PT_REGS_RET(ctx); })
#define BPF_KRETPROBE_READ_RET_IP BPF_KPROBE_READ_RET_IP
#else #else
#define BPF_KPROBE_READ_RET_IP(ip, ctx) ({ \ #define BPF_KPROBE_READ_RET_IP(ip, ctx) ({ \
bpf_probe_read(&(ip), sizeof(ip), (void *)PT_REGS_RET(ctx)); }) bpf_probe_read(&(ip), sizeof(ip), (void *)PT_REGS_RET(ctx)); })

3
tools/build/feature/test-bpf.c
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@ -9,6 +9,9 @@
# define __NR_bpf 321 # define __NR_bpf 321
# elif defined(__aarch64__) # elif defined(__aarch64__)
# define __NR_bpf 280 # define __NR_bpf 280
# elif defined(__sparc__)
# define __NR_bpf 349
# else
# error __NR_bpf not defined. libbpf does not support your arch. # error __NR_bpf not defined. libbpf does not support your arch.
# endif # endif
#endif #endif

2
tools/lib/bpf/bpf.c
View File

@ -37,6 +37,8 @@
# define __NR_bpf 321 # define __NR_bpf 321
# elif defined(__aarch64__) # elif defined(__aarch64__)
# define __NR_bpf 280 # define __NR_bpf 280
# elif defined(__sparc__)
# define __NR_bpf 349
# else # else
# error __NR_bpf not defined. libbpf does not support your arch. # error __NR_bpf not defined. libbpf does not support your arch.
# endif # endif