vapier | 971c9e8 | 2009-10-07 08:21:17 +0000 | [diff] [blame] | 1 | /* |
| 2 | * simple example ptrace() code to help build basis for other tests |
| 3 | * |
| 4 | * Copyright (c) 2009 Analog Devices Inc. |
| 5 | * |
| 6 | * Licensed under the GPL-2 or later |
| 7 | */ |
| 8 | |
| 9 | #define _GNU_SOURCE |
| 10 | |
Mike Frysinger | 0712693 | 2011-12-19 18:59:25 -0500 | [diff] [blame] | 11 | #include <config.h> |
| 12 | |
vapier | 971c9e8 | 2009-10-07 08:21:17 +0000 | [diff] [blame] | 13 | #include <errno.h> |
| 14 | #include <stdbool.h> |
| 15 | #include <stdio.h> |
| 16 | #include <stdlib.h> |
| 17 | #include <unistd.h> |
| 18 | #include <sys/ptrace.h> |
| 19 | #include <sys/syscall.h> |
Mike Frysinger | 0712693 | 2011-12-19 18:59:25 -0500 | [diff] [blame] | 20 | #include "ptrace.h" |
vapier | 971c9e8 | 2009-10-07 08:21:17 +0000 | [diff] [blame] | 21 | |
| 22 | #include "test.h" |
vapier | 971c9e8 | 2009-10-07 08:21:17 +0000 | [diff] [blame] | 23 | #include "spawn_ptrace_child.h" |
| 24 | |
| 25 | #include "syscalls.h" |
| 26 | |
| 27 | char *TCID = "simple_tracer"; |
| 28 | int TST_TOTAL = 0; |
| 29 | |
| 30 | #define _decode(name, val) \ |
| 31 | ({ \ |
| 32 | if (sizeof(long) == 4) \ |
| 33 | printf(name ":%08lx ", val); \ |
| 34 | else if (sizeof(long) == 8) \ |
| 35 | printf(name ":%016lx ", val); \ |
| 36 | else \ |
| 37 | printf(name ":%lx ", val); \ |
| 38 | val; \ |
| 39 | }) |
| 40 | #define decode(reg) _decode(#reg, pt->reg) |
| 41 | #define decode_user(name, offset) \ |
| 42 | _decode(name, vptrace(PTRACE_PEEKUSER, pid, offset, NULL)); |
| 43 | #define decode_sysnum(nr) printf("%s ", get_sysnum(nr)) |
| 44 | static void decode_regs(struct pt_regs *pt) |
| 45 | { |
| 46 | #if defined(__bfin__) |
| 47 | long nr = decode_user("orig_p0", PT_ORIG_P0); |
| 48 | decode(p0); |
| 49 | decode(r0); |
| 50 | decode(r1); |
| 51 | decode(r2); |
| 52 | decode(r3); |
| 53 | decode(r4); |
| 54 | decode(r5); |
| 55 | decode_sysnum(nr); |
| 56 | puts(""); |
| 57 | #elif defined(__i386__) |
| 58 | long nr = decode_user("orig_eax", 4 * ORIG_EAX); |
| 59 | decode(eax); |
| 60 | decode(ebx); |
| 61 | decode(ecx); |
| 62 | decode(edx); |
| 63 | decode(esi); |
| 64 | decode(edi); |
| 65 | decode(ebp); |
| 66 | decode_sysnum(nr); |
| 67 | puts(""); |
Mike Frysinger | c8f19aa | 2011-12-19 19:00:01 -0500 | [diff] [blame] | 68 | #elif defined(__x86_64__) |
| 69 | long nr = decode_user("orig_rax", 8 * ORIG_RAX); |
| 70 | decode(rax); |
| 71 | decode(rbx); |
| 72 | decode(rcx); |
| 73 | decode(rdx); |
| 74 | decode(rsi); |
| 75 | decode(rdi); |
| 76 | decode(rbp); |
| 77 | decode_sysnum(nr); |
| 78 | puts(""); |
vapier | 0dadde1 | 2009-11-14 05:17:50 +0000 | [diff] [blame] | 79 | #elif defined(__sparc__) |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 80 | #define G1 u_regs[0] |
| 81 | #define G2 u_regs[1] |
| 82 | #define G3 u_regs[2] |
| 83 | #define G4 u_regs[3] |
| 84 | #define G5 u_regs[4] |
| 85 | #define G6 u_regs[5] |
| 86 | #define G7 u_regs[6] |
| 87 | #define O0 u_regs[7] |
| 88 | #define O1 u_regs[8] |
| 89 | #define O2 u_regs[9] |
| 90 | #define O3 u_regs[10] |
| 91 | #define O4 u_regs[11] |
| 92 | #define O5 u_regs[12] |
| 93 | #define O6 u_regs[13] |
| 94 | #define O7 u_regs[14] |
vapier | 0dadde1 | 2009-11-14 05:17:50 +0000 | [diff] [blame] | 95 | decode(G1); |
| 96 | decode(G2); |
| 97 | decode(G3); |
| 98 | decode(G4); |
| 99 | decode(G5); |
| 100 | decode(G6); |
| 101 | decode(G7); |
| 102 | decode(O0); |
| 103 | decode(O1); |
| 104 | decode(O2); |
| 105 | decode(O3); |
| 106 | decode(O4); |
| 107 | decode(O5); |
| 108 | decode(O6); |
| 109 | decode(O7); |
| 110 | decode_sysnum(pt->G1); |
| 111 | puts(""); |
vapier | 971c9e8 | 2009-10-07 08:21:17 +0000 | [diff] [blame] | 112 | #else |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 113 | #warning "no idea how to decode your arch" |
vapier | 971c9e8 | 2009-10-07 08:21:17 +0000 | [diff] [blame] | 114 | puts("no idea how to decode your arch"); |
| 115 | #endif |
| 116 | } |
| 117 | |
| 118 | int main(int argc, char *argv[]) |
| 119 | { |
| 120 | struct pt_regs pt_regs; |
| 121 | long ret; |
| 122 | int status; |
| 123 | |
| 124 | make_a_baby(argc, argv); |
| 125 | |
| 126 | while (1) { |
| 127 | ret = vptrace(PTRACE_GETREGS, pid, NULL, &pt_regs); |
| 128 | if (ret) |
| 129 | break; |
| 130 | decode_regs(&pt_regs); |
| 131 | |
| 132 | ret = vptrace(PTRACE_SYSCALL, pid, NULL, NULL); |
| 133 | if (ret) |
| 134 | break; |
| 135 | |
| 136 | if (waitpid(pid, &status, 0) == -1) |
| 137 | break; |
| 138 | } |
| 139 | |
| 140 | /* hopefully this worked */ |
| 141 | vptrace(PTRACE_KILL, pid, NULL, NULL); |
| 142 | |
Garrett Cooper | 2c28215 | 2010-12-16 00:55:50 -0800 | [diff] [blame] | 143 | tst_exit(); |
Mike Frysinger | c8f19aa | 2011-12-19 19:00:01 -0500 | [diff] [blame] | 144 | } |