Juan Cespedes | a485083 | 2002-03-03 02:37:50 +0100 | [diff] [blame] | 1 | #if HAVE_CONFIG_H |
| 2 | #include "config.h" |
| 3 | #endif |
| 4 | |
| 5 | #include <sys/ptrace.h> |
Ian Wienand | 5570a77 | 2006-02-17 02:00:00 +0100 | [diff] [blame] | 6 | #include <string.h> |
Juan Cespedes | 8d1b92b | 2009-07-03 10:39:34 +0200 | [diff] [blame^] | 7 | #include "common.h" |
Juan Cespedes | a485083 | 2002-03-03 02:37:50 +0100 | [diff] [blame] | 8 | |
| 9 | static unsigned char break_insn[] = BREAKPOINT_VALUE; |
| 10 | |
Ian Wienand | 5570a77 | 2006-02-17 02:00:00 +0100 | [diff] [blame] | 11 | #ifdef ARCH_HAVE_ENABLE_BREAKPOINT |
Juan Cespedes | 1dec217 | 2009-05-07 10:12:10 +0200 | [diff] [blame] | 12 | extern void arch_enable_breakpoint(pid_t, Breakpoint *); |
Juan Cespedes | f135052 | 2008-12-16 18:19:58 +0100 | [diff] [blame] | 13 | void |
Juan Cespedes | 1dec217 | 2009-05-07 10:12:10 +0200 | [diff] [blame] | 14 | enable_breakpoint(pid_t pid, Breakpoint *sbp) { |
Juan Cespedes | cd8976d | 2009-05-14 13:47:58 +0200 | [diff] [blame] | 15 | if (sbp->libsym) { |
| 16 | debug(DEBUG_PROCESS, "enable_breakpoint: pid=%d, addr=%p, symbol=%s", pid, sbp->addr, sbp->libsym->name); |
| 17 | } else { |
| 18 | debug(DEBUG_PROCESS, "enable_breakpoint: pid=%d, addr=%p", pid, sbp->addr); |
| 19 | } |
Ian Wienand | 9a2ad35 | 2006-02-20 22:44:45 +0100 | [diff] [blame] | 20 | arch_enable_breakpoint(pid, sbp); |
Ian Wienand | 5570a77 | 2006-02-17 02:00:00 +0100 | [diff] [blame] | 21 | } |
| 22 | #else |
Juan Cespedes | f135052 | 2008-12-16 18:19:58 +0100 | [diff] [blame] | 23 | void |
Juan Cespedes | 1dec217 | 2009-05-07 10:12:10 +0200 | [diff] [blame] | 24 | enable_breakpoint(pid_t pid, Breakpoint *sbp) { |
Paul Gilliam | 3f1219f | 2006-04-24 18:25:38 +0200 | [diff] [blame] | 25 | unsigned int i, j; |
Juan Cespedes | a485083 | 2002-03-03 02:37:50 +0100 | [diff] [blame] | 26 | |
Juan Cespedes | cd8976d | 2009-05-14 13:47:58 +0200 | [diff] [blame] | 27 | if (sbp->libsym) { |
| 28 | debug(DEBUG_PROCESS, "enable_breakpoint: pid=%d, addr=%p, symbol=%s", pid, sbp->addr, sbp->libsym->name); |
| 29 | } else { |
| 30 | debug(DEBUG_PROCESS, "enable_breakpoint: pid=%d, addr=%p", pid, sbp->addr); |
| 31 | } |
Juan Cespedes | a485083 | 2002-03-03 02:37:50 +0100 | [diff] [blame] | 32 | |
Ian Wienand | 2d45b1a | 2006-02-20 22:48:07 +0100 | [diff] [blame] | 33 | for (i = 0; i < 1 + ((BREAKPOINT_LENGTH - 1) / sizeof(long)); i++) { |
| 34 | long a = |
| 35 | ptrace(PTRACE_PEEKTEXT, pid, sbp->addr + i * sizeof(long), |
| 36 | 0); |
| 37 | for (j = 0; |
| 38 | j < sizeof(long) |
| 39 | && i * sizeof(long) + j < BREAKPOINT_LENGTH; j++) { |
| 40 | unsigned char *bytes = (unsigned char *)&a; |
Juan Cespedes | a485083 | 2002-03-03 02:37:50 +0100 | [diff] [blame] | 41 | |
Paul Gilliam | 76c61f1 | 2006-06-14 06:55:21 +0200 | [diff] [blame] | 42 | sbp->orig_value[i * sizeof(long) + j] = bytes[j]; |
Ian Wienand | 2d45b1a | 2006-02-20 22:48:07 +0100 | [diff] [blame] | 43 | bytes[j] = break_insn[i * sizeof(long) + j]; |
Juan Cespedes | a485083 | 2002-03-03 02:37:50 +0100 | [diff] [blame] | 44 | } |
Ian Wienand | 2d45b1a | 2006-02-20 22:48:07 +0100 | [diff] [blame] | 45 | ptrace(PTRACE_POKETEXT, pid, sbp->addr + i * sizeof(long), a); |
Juan Cespedes | a485083 | 2002-03-03 02:37:50 +0100 | [diff] [blame] | 46 | } |
| 47 | } |
Ian Wienand | 2d45b1a | 2006-02-20 22:48:07 +0100 | [diff] [blame] | 48 | #endif /* ARCH_HAVE_ENABLE_BREAKPOINT */ |
Juan Cespedes | a485083 | 2002-03-03 02:37:50 +0100 | [diff] [blame] | 49 | |
Ian Wienand | 5570a77 | 2006-02-17 02:00:00 +0100 | [diff] [blame] | 50 | #ifdef ARCH_HAVE_DISABLE_BREAKPOINT |
Juan Cespedes | 1dec217 | 2009-05-07 10:12:10 +0200 | [diff] [blame] | 51 | extern void arch_disable_breakpoint(pid_t, const Breakpoint *sbp); |
Juan Cespedes | f135052 | 2008-12-16 18:19:58 +0100 | [diff] [blame] | 52 | void |
Juan Cespedes | 1dec217 | 2009-05-07 10:12:10 +0200 | [diff] [blame] | 53 | disable_breakpoint(pid_t pid, const Breakpoint *sbp) { |
Juan Cespedes | cd8976d | 2009-05-14 13:47:58 +0200 | [diff] [blame] | 54 | if (sbp->libsym) { |
| 55 | debug(DEBUG_PROCESS, "disable_breakpoint: pid=%d, addr=%p, symbol=%s", pid, sbp->addr, sbp->libsym->name); |
| 56 | } else { |
| 57 | debug(DEBUG_PROCESS, "disable_breakpoint: pid=%d, addr=%p", pid, sbp->addr); |
| 58 | } |
Ian Wienand | 5570a77 | 2006-02-17 02:00:00 +0100 | [diff] [blame] | 59 | arch_disable_breakpoint(pid, sbp); |
| 60 | } |
| 61 | #else |
Juan Cespedes | f135052 | 2008-12-16 18:19:58 +0100 | [diff] [blame] | 62 | void |
Juan Cespedes | 1dec217 | 2009-05-07 10:12:10 +0200 | [diff] [blame] | 63 | disable_breakpoint(pid_t pid, const Breakpoint *sbp) { |
Paul Gilliam | 3f1219f | 2006-04-24 18:25:38 +0200 | [diff] [blame] | 64 | unsigned int i, j; |
Juan Cespedes | a485083 | 2002-03-03 02:37:50 +0100 | [diff] [blame] | 65 | |
Juan Cespedes | cd8976d | 2009-05-14 13:47:58 +0200 | [diff] [blame] | 66 | if (sbp->libsym) { |
| 67 | debug(DEBUG_PROCESS, "disable_breakpoint: pid=%d, addr=%p, symbol=%s", pid, sbp->addr, sbp->libsym->name); |
| 68 | } else { |
| 69 | debug(DEBUG_PROCESS, "disable_breakpoint: pid=%d, addr=%p", pid, sbp->addr); |
| 70 | } |
Juan Cespedes | a485083 | 2002-03-03 02:37:50 +0100 | [diff] [blame] | 71 | |
Ian Wienand | 2d45b1a | 2006-02-20 22:48:07 +0100 | [diff] [blame] | 72 | for (i = 0; i < 1 + ((BREAKPOINT_LENGTH - 1) / sizeof(long)); i++) { |
| 73 | long a = |
| 74 | ptrace(PTRACE_PEEKTEXT, pid, sbp->addr + i * sizeof(long), |
| 75 | 0); |
| 76 | for (j = 0; |
| 77 | j < sizeof(long) |
| 78 | && i * sizeof(long) + j < BREAKPOINT_LENGTH; j++) { |
| 79 | unsigned char *bytes = (unsigned char *)&a; |
Juan Cespedes | a485083 | 2002-03-03 02:37:50 +0100 | [diff] [blame] | 80 | |
Ian Wienand | 2d45b1a | 2006-02-20 22:48:07 +0100 | [diff] [blame] | 81 | bytes[j] = sbp->orig_value[i * sizeof(long) + j]; |
Juan Cespedes | a485083 | 2002-03-03 02:37:50 +0100 | [diff] [blame] | 82 | } |
Ian Wienand | 2d45b1a | 2006-02-20 22:48:07 +0100 | [diff] [blame] | 83 | ptrace(PTRACE_POKETEXT, pid, sbp->addr + i * sizeof(long), a); |
Juan Cespedes | a485083 | 2002-03-03 02:37:50 +0100 | [diff] [blame] | 84 | } |
| 85 | } |
Ian Wienand | 2d45b1a | 2006-02-20 22:48:07 +0100 | [diff] [blame] | 86 | #endif /* ARCH_HAVE_DISABLE_BREAKPOINT */ |