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#include "config.h"
#include <sys/ptrace.h>
#include <string.h>
#include "common.h"
#include "arch.h"
static unsigned char break_insn[] = BREAKPOINT_VALUE;
#ifdef ARCH_HAVE_ENABLE_BREAKPOINT
extern void arch_enable_breakpoint(pid_t, Breakpoint *);
void
enable_breakpoint(pid_t pid, Breakpoint *sbp) {
if (sbp->libsym) {
debug(DEBUG_PROCESS, "enable_breakpoint: pid=%d, addr=%p, symbol=%s", pid, sbp->addr, sbp->libsym->name);
} else {
debug(DEBUG_PROCESS, "enable_breakpoint: pid=%d, addr=%p", pid, sbp->addr);
}
arch_enable_breakpoint(pid, sbp);
}
#else
void
enable_breakpoint(pid_t pid, Breakpoint *sbp) {
unsigned int i, j;
if (sbp->libsym) {
debug(DEBUG_PROCESS, "enable_breakpoint: pid=%d, addr=%p, symbol=%s", pid, sbp->addr, sbp->libsym->name);
} else {
debug(DEBUG_PROCESS, "enable_breakpoint: pid=%d, addr=%p", pid, sbp->addr);
}
for (i = 0; i < 1 + ((BREAKPOINT_LENGTH - 1) / sizeof(long)); i++) {
long a =
ptrace(PTRACE_PEEKTEXT, pid, sbp->addr + i * sizeof(long),
0);
for (j = 0;
j < sizeof(long)
&& i * sizeof(long) + j < BREAKPOINT_LENGTH; j++) {
unsigned char *bytes = (unsigned char *)&a;
sbp->orig_value[i * sizeof(long) + j] = bytes[j];
bytes[j] = break_insn[i * sizeof(long) + j];
}
ptrace(PTRACE_POKETEXT, pid, sbp->addr + i * sizeof(long), a);
}
}
#endif /* ARCH_HAVE_ENABLE_BREAKPOINT */
#ifdef ARCH_HAVE_DISABLE_BREAKPOINT
extern void arch_disable_breakpoint(pid_t, const Breakpoint *sbp);
void
disable_breakpoint(pid_t pid, const Breakpoint *sbp) {
if (sbp->libsym) {
debug(DEBUG_PROCESS, "disable_breakpoint: pid=%d, addr=%p, symbol=%s", pid, sbp->addr, sbp->libsym->name);
} else {
debug(DEBUG_PROCESS, "disable_breakpoint: pid=%d, addr=%p", pid, sbp->addr);
}
arch_disable_breakpoint(pid, sbp);
}
#else
void
disable_breakpoint(pid_t pid, const Breakpoint *sbp) {
unsigned int i, j;
if (sbp->libsym) {
debug(DEBUG_PROCESS, "disable_breakpoint: pid=%d, addr=%p, symbol=%s", pid, sbp->addr, sbp->libsym->name);
} else {
debug(DEBUG_PROCESS, "disable_breakpoint: pid=%d, addr=%p", pid, sbp->addr);
}
for (i = 0; i < 1 + ((BREAKPOINT_LENGTH - 1) / sizeof(long)); i++) {
long a =
ptrace(PTRACE_PEEKTEXT, pid, sbp->addr + i * sizeof(long),
0);
for (j = 0;
j < sizeof(long)
&& i * sizeof(long) + j < BREAKPOINT_LENGTH; j++) {
unsigned char *bytes = (unsigned char *)&a;
bytes[j] = sbp->orig_value[i * sizeof(long) + j];
}
ptrace(PTRACE_POKETEXT, pid, sbp->addr + i * sizeof(long), a);
}
}
#endif /* ARCH_HAVE_DISABLE_BREAKPOINT */
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