projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blame
| Commit | Line | Data |
|---|---|---|
| c5e63197 JO |
1 | #include <linux/errno.h> |
| 2 | #include <linux/kernel.h> | |
| 4018994f JO |
3 | #include <linux/sched.h> |
| 4 | #include <linux/perf_event.h> | |
| c5e63197 JO |
5 | #include <linux/bug.h> |
| 6 | #include <linux/stddef.h> | |
| 7 | #include <asm/perf_regs.h> | |
| 8 | #include <asm/ptrace.h> | |
| 9 | ||
| 10 | #ifdef CONFIG_X86_32 | |
| 11 | #define PERF_REG_X86_MAX PERF_REG_X86_32_MAX | |
| 12 | #else | |
| 13 | #define PERF_REG_X86_MAX PERF_REG_X86_64_MAX | |
| 14 | #endif | |
| 15 | ||
| 16 | #define PT_REGS_OFFSET(id, r) [id] = offsetof(struct pt_regs, r) | |
| 17 | ||
| 18 | static unsigned int pt_regs_offset[PERF_REG_X86_MAX] = { | |
| 19 | PT_REGS_OFFSET(PERF_REG_X86_AX, ax), | |
| 20 | PT_REGS_OFFSET(PERF_REG_X86_BX, bx), | |
| 21 | PT_REGS_OFFSET(PERF_REG_X86_CX, cx), | |
| 22 | PT_REGS_OFFSET(PERF_REG_X86_DX, dx), | |
| 23 | PT_REGS_OFFSET(PERF_REG_X86_SI, si), | |
| 24 | PT_REGS_OFFSET(PERF_REG_X86_DI, di), | |
| 25 | PT_REGS_OFFSET(PERF_REG_X86_BP, bp), | |
| 26 | PT_REGS_OFFSET(PERF_REG_X86_SP, sp), | |
| 27 | PT_REGS_OFFSET(PERF_REG_X86_IP, ip), | |
| 28 | PT_REGS_OFFSET(PERF_REG_X86_FLAGS, flags), | |
| 29 | PT_REGS_OFFSET(PERF_REG_X86_CS, cs), | |
| 30 | PT_REGS_OFFSET(PERF_REG_X86_SS, ss), | |
| 31 | #ifdef CONFIG_X86_32 | |
| 32 | PT_REGS_OFFSET(PERF_REG_X86_DS, ds), | |
| 33 | PT_REGS_OFFSET(PERF_REG_X86_ES, es), | |
| 34 | PT_REGS_OFFSET(PERF_REG_X86_FS, fs), | |
| 35 | PT_REGS_OFFSET(PERF_REG_X86_GS, gs), | |
| 36 | #else | |
| 37 | /* | |
| 38 | * The pt_regs struct does not store | |
| 39 | * ds, es, fs, gs in 64 bit mode. | |
| 40 | */ | |
| 41 | (unsigned int) -1, | |
| 42 | (unsigned int) -1, | |
| 43 | (unsigned int) -1, | |
| 44 | (unsigned int) -1, | |
| 45 | #endif | |
| 46 | #ifdef CONFIG_X86_64 | |
| 47 | PT_REGS_OFFSET(PERF_REG_X86_R8, r8), | |
| 48 | PT_REGS_OFFSET(PERF_REG_X86_R9, r9), | |
| 49 | PT_REGS_OFFSET(PERF_REG_X86_R10, r10), | |
| 50 | PT_REGS_OFFSET(PERF_REG_X86_R11, r11), | |
| 51 | PT_REGS_OFFSET(PERF_REG_X86_R12, r12), | |
| 52 | PT_REGS_OFFSET(PERF_REG_X86_R13, r13), | |
| 53 | PT_REGS_OFFSET(PERF_REG_X86_R14, r14), | |
| 54 | PT_REGS_OFFSET(PERF_REG_X86_R15, r15), | |
| 55 | #endif | |
| 56 | }; | |
| 57 | ||
| 58 | u64 perf_reg_value(struct pt_regs *regs, int idx) | |
| 59 | { | |
| 1e6dd8ad | 60 | if (WARN_ON_ONCE(idx >= ARRAY_SIZE(pt_regs_offset))) |
| c5e63197 JO |
61 | return 0; |
| 62 | ||
| 63 | return regs_get_register(regs, pt_regs_offset[idx]); | |
| 64 | } | |
| 65 | ||
| 66 | #define REG_RESERVED (~((1ULL << PERF_REG_X86_MAX) - 1ULL)) | |
| 67 | ||
| 68 | #ifdef CONFIG_X86_32 | |
| 69 | int perf_reg_validate(u64 mask) | |
| 70 | { | |
| 71 | if (!mask || mask & REG_RESERVED) | |
| 72 | return -EINVAL; | |
| 73 | ||
| 74 | return 0; | |
| 75 | } | |
| 4018994f JO |
76 | |
| 77 | u64 perf_reg_abi(struct task_struct *task) | |
| 78 | { | |
| 79 | return PERF_SAMPLE_REGS_ABI_32; | |
| 80 | } | |
| c5e63197 JO |
81 | #else /* CONFIG_X86_64 */ |
| 82 | #define REG_NOSUPPORT ((1ULL << PERF_REG_X86_DS) | \ | |
| 83 | (1ULL << PERF_REG_X86_ES) | \ | |
| 84 | (1ULL << PERF_REG_X86_FS) | \ | |
| 85 | (1ULL << PERF_REG_X86_GS)) | |
| 86 | ||
| 87 | int perf_reg_validate(u64 mask) | |
| 88 | { | |
| 89 | if (!mask || mask & REG_RESERVED) | |
| 90 | return -EINVAL; | |
| 91 | ||
| 92 | if (mask & REG_NOSUPPORT) | |
| 93 | return -EINVAL; | |
| 94 | ||
| 95 | return 0; | |
| 96 | } | |
| 4018994f JO |
97 | |
| 98 | u64 perf_reg_abi(struct task_struct *task) | |
| 99 | { | |
| 100 | if (test_tsk_thread_flag(task, TIF_IA32)) | |
| 101 | return PERF_SAMPLE_REGS_ABI_32; | |
| 102 | else | |
| 103 | return PERF_SAMPLE_REGS_ABI_64; | |
| 104 | } | |
| c5e63197 | 105 | #endif /* CONFIG_X86_32 */ |