DWARF stuff...
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static void
command_regs(struct mi_process proc)
{
struct mi_registers regs = get_process_registers(proc);
printf("rax = %#018lx rcx = %#018lx\n"
"rbp = %#018lx rbx = %#018lx\n"
"rdx = %#018lx rsi = %#018lx\n"
"rdi = %#018lx rip = %#018lx\n"
"rsp = %#018lx\n",
regs.rax, regs.rcx, regs.rbp, regs.rbx,
regs.rdx, regs.rsi, regs.rdi, regs.rip,
regs.rsp);
}
static void
command_step(struct mi_process proc)
{
ptrace(PTRACE_SINGLESTEP, proc.pid, 0, 0);
waitpid(proc.pid, 0, 0);
#if 1
print_current_instruction(proc);
struct mi_registers regs = get_process_registers(proc);
struct mi_sourcepoint *sp = pc_to_sourcepoint(proc, regs.rip - proc.base_address);
print_sourcepoint(proc, sp);
#endif
}
static void
command_start(struct mi_process proc)
{
u64 main_address = proc.base_address + proc.main_address;
long saved_instruction = ptrace(PTRACE_PEEKDATA, proc.pid, main_address, NULL);
long int3_byte = 0x000000cc;
long int3_word = (saved_instruction & 0xFFFFFF00) | int3_byte;
/* write 0xcc */
ptrace(PTRACE_POKEDATA, proc.pid, main_address, int3_word);
/* wait till child hits the interrupt */
ptrace(PTRACE_CONT, proc.pid, 0, 0);
waitpid(proc.pid, 0, 0);
/* restore original instrucion */
ptrace(PTRACE_POKEDATA, proc.pid, main_address, saved_instruction);
/* step back to original instruction */
struct mi_registers regs = get_process_registers(proc);
regs.rip -= 1;
set_process_registers(proc, regs);
}
static void
command_next(struct mi_process proc)
{
struct mi_registers regs = get_process_registers(proc);
struct mi_sourcepoint *sp = pc_to_sourcepoint(proc, regs.rip - proc.base_address);
struct mi_sourcepoint *next_sp;
do {
ptrace(PTRACE_SINGLESTEP, proc.pid, 0, 0);
waitpid(proc.pid, 0, 0);
regs = get_process_registers(proc);
//printf("%#lx\n", regs.rip - proc.base_address);
next_sp = pc_to_sourcepoint(proc, regs.rip - proc.base_address);
// TODO: skip call, repXXX, etc
} while (next_sp->line == sp->line);
print_sourcepoint(proc, next_sp);
}
static void
command_list(struct mi_process proc)
{
struct mi_registers regs = get_process_registers(proc);
struct mi_sourcepoint *sp = pc_to_sourcepoint(proc, regs.rip - proc.base_address);
print_sourcepoint(proc, sp);
}
static void
command_cont(struct mi_process proc)
{
ptrace(PTRACE_CONT, proc.pid, 0, 0);
// TODO
}
static void
command_stop(struct mi_process proc)
{
kill(proc.pid, SIGINT);
// TODO
}