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libbpf: Add ARC support to bpf_tracing.h

Add PT_REGS macros suitable for ARCompact and ARCv2.

Vladimir Isaev committed 4 years ago

Commit 07385991 parent 34ba23b2 files · +25 −0Browse files

Unified · Split

2 files
  1. tools/include/uapi/asm/bpf_perf_event.h +2 −0
  2. tools/lib/bpf/bpf_tracing.h +23 −0
tools/include/uapi/asm/bpf_perf_event.h+2−0
@@ -1,5 +1,7 @@
1#if defined(__aarch64__)1#if defined(__aarch64__)
2#include "../../arch/arm64/include/uapi/asm/bpf_perf_event.h"2#include "../../arch/arm64/include/uapi/asm/bpf_perf_event.h"
3#elif defined(__arc__)
4#include "../../arch/arc/include/uapi/asm/bpf_perf_event.h"
3#elif defined(__s390__)5#elif defined(__s390__)
4#include "../../arch/s390/include/uapi/asm/bpf_perf_event.h"6#include "../../arch/s390/include/uapi/asm/bpf_perf_event.h"
5#elif defined(__riscv)7#elif defined(__riscv)
tools/lib/bpf/bpf_tracing.h+23−0
@@ -27,6 +27,9 @@ · 26 unmodified lines
27#elif defined(__TARGET_ARCH_riscv)27#elif defined(__TARGET_ARCH_riscv)
28 #define bpf_target_riscv28 #define bpf_target_riscv
29 #define bpf_target_defined29 #define bpf_target_defined
30#elif defined(__TARGET_ARCH_arc)
31 #define bpf_target_arc
32 #define bpf_target_defined
30#else33#else
31 34
32/* Fall back to what the compiler says */35/* Fall back to what the compiler says */
@@ -54,6 +57,9 @@ · 21 unmodified lines
54#elif defined(__riscv) && __riscv_xlen == 6457#elif defined(__riscv) && __riscv_xlen == 64
55 #define bpf_target_riscv58 #define bpf_target_riscv
56 #define bpf_target_defined59 #define bpf_target_defined
60#elif defined(__arc__)
61 #define bpf_target_arc
62 #define bpf_target_defined
57#endif /* no compiler target */63#endif /* no compiler target */
58 64
59#endif65#endif
@@ -233,6 +239,23 @@ struct pt_regs___arm64 { · 173 unmodified lines
233/* riscv does not select ARCH_HAS_SYSCALL_WRAPPER. */239/* riscv does not select ARCH_HAS_SYSCALL_WRAPPER. */
234#define PT_REGS_SYSCALL_REGS(ctx) ctx240#define PT_REGS_SYSCALL_REGS(ctx) ctx
235 241
242#elif defined(bpf_target_arc)
243
244/* arc provides struct user_pt_regs instead of struct pt_regs to userspace */
245#define __PT_REGS_CAST(x) ((const struct user_regs_struct *)(x))
246#define __PT_PARM1_REG scratch.r0
247#define __PT_PARM2_REG scratch.r1
248#define __PT_PARM3_REG scratch.r2
249#define __PT_PARM4_REG scratch.r3
250#define __PT_PARM5_REG scratch.r4
251#define __PT_RET_REG scratch.blink
252#define __PT_FP_REG __unsupported__
253#define __PT_RC_REG scratch.r0
254#define __PT_SP_REG scratch.sp
255#define __PT_IP_REG scratch.ret
256/* arc does not select ARCH_HAS_SYSCALL_WRAPPER. */
257#define PT_REGS_SYSCALL_REGS(ctx) ctx
258
236#endif259#endif
237 260
238#if defined(bpf_target_defined)261#if defined(bpf_target_defined)

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