#include "defs.h"
#include <sys/types.h>
#include <sys/wait.h>
#include "frame.h"
#include "inferior.h"
#include <stdio.h>
#include <errno.h>
int quit_flag = 0;
static char my_registers[REGISTER_BYTES];
char *registers = my_registers;
char buf2[MAX_REGISTER_RAW_SIZE];
#include <sys/ptrace.h>
#include <machine/reg.h>
extern int sys_nerr;
extern char **environ;
extern int inferior_pid;
void quit (), perror_with_name ();
#define RF(dst, src) \
memcpy(®isters[REGISTER_BYTE(dst)], &src, sizeof(src))
#define RS(src, dst) \
memcpy(&dst, ®isters[REGISTER_BYTE(src)], sizeof(dst))
#ifdef __i386__
struct env387
{
unsigned short control;
unsigned short r0;
unsigned short status;
unsigned short r1;
unsigned short tag;
unsigned short r2;
unsigned long eip;
unsigned short code_seg;
unsigned short opcode;
unsigned long operand;
unsigned short operand_seg;
unsigned short r3;
unsigned char regs[8][10];
};
int i386_register_raw_size[MAX_NUM_REGS] = {
4, 4, 4, 4,
4, 4, 4, 4,
4, 4, 4, 4,
4, 4, 4, 4,
10, 10, 10, 10,
10, 10, 10, 10,
4, 4, 4, 4,
4, 4, 4, 4,
16, 16, 16, 16,
16, 16, 16, 16,
4
};
int i386_register_byte[MAX_NUM_REGS];
static void
initialize_arch (void)
{
{
int i, offset;
offset = 0;
for (i = 0; i < MAX_NUM_REGS; i++)
{
i386_register_byte[i] = offset;
offset += i386_register_raw_size[i];
}
}
}
#endif
#ifdef __powerpc__
static void
initialize_arch (void)
{
}
#endif
int
create_inferior (char *program, char **allargs)
{
int pid;
pid = fork ();
if (pid < 0)
perror_with_name ("fork");
if (pid == 0)
{
ptrace (PT_TRACE_ME, 0, 0, 0);
execv (program, allargs);
fprintf (stderr, "Cannot exec %s: %s.\n", program,
errno < sys_nerr ? sys_errlist[errno] : "unknown error");
fflush (stderr);
_exit (0177);
}
return pid;
}
void
kill_inferior (void)
{
if (inferior_pid == 0)
return;
ptrace (PT_KILL, inferior_pid, 0, 0);
wait (0);
}
int
mythread_alive (int pid)
{
return 1;
}
unsigned char
mywait (char *status)
{
int pid;
int w;
pid = wait (&w);
if (pid != inferior_pid)
perror_with_name ("wait");
if (WIFEXITED (w))
{
fprintf (stderr, "\nChild exited with retcode = %x \n", WEXITSTATUS (w));
*status = 'W';
return ((unsigned char) WEXITSTATUS (w));
}
else if (!WIFSTOPPED (w))
{
fprintf (stderr, "\nChild terminated with signal = %x \n", WTERMSIG (w));
*status = 'X';
return ((unsigned char) WTERMSIG (w));
}
fetch_inferior_registers (0);
*status = 'T';
return ((unsigned char) WSTOPSIG (w));
}
void
myresume (int step, int signal)
{
errno = 0;
ptrace (step ? PT_STEP : PT_CONTINUE, inferior_pid,
(PTRACE_ARG3_TYPE) 1, signal);
if (errno)
perror_with_name ("ptrace");
}
#ifdef __i386__
void
fetch_inferior_registers (int ignored)
{
struct reg inferior_registers;
struct env387 inferior_fp_registers;
ptrace (PT_GETREGS, inferior_pid,
(PTRACE_ARG3_TYPE) &inferior_registers, 0);
ptrace (PT_GETFPREGS, inferior_pid,
(PTRACE_ARG3_TYPE) &inferior_fp_registers, 0);
RF ( 0, inferior_registers.r_eax);
RF ( 1, inferior_registers.r_ecx);
RF ( 2, inferior_registers.r_edx);
RF ( 3, inferior_registers.r_ebx);
RF ( 4, inferior_registers.r_esp);
RF ( 5, inferior_registers.r_ebp);
RF ( 6, inferior_registers.r_esi);
RF ( 7, inferior_registers.r_edi);
RF ( 8, inferior_registers.r_eip);
RF ( 9, inferior_registers.r_eflags);
RF (10, inferior_registers.r_cs);
RF (11, inferior_registers.r_ss);
RF (12, inferior_registers.r_ds);
RF (13, inferior_registers.r_es);
RF (14, inferior_registers.r_fs);
RF (15, inferior_registers.r_gs);
RF (FP0_REGNUM, inferior_fpregisters.regs[0]);
RF (FP0_REGNUM + 1, inferior_fpregisters.regs[1]);
RF (FP0_REGNUM + 2, inferior_fpregisters.regs[2]);
RF (FP0_REGNUM + 3, inferior_fpregisters.regs[3]);
RF (FP0_REGNUM + 4, inferior_fpregisters.regs[4]);
RF (FP0_REGNUM + 5, inferior_fpregisters.regs[5]);
RF (FP0_REGNUM + 6, inferior_fpregisters.regs[6]);
RF (FP0_REGNUM + 7, inferior_fpregisters.regs[7]);
RF (FCTRL_REGNUM, inferior_fpregisters.control);
RF (FSTAT_REGNUM, inferior_fpregisters.status);
RF (FTAG_REGNUM, inferior_fpregisters.tag);
RF (FCS_REGNUM, inferior_fpregisters.code_seg);
RF (FCOFF_REGNUM, inferior_fpregisters.eip);
RF (FDS_REGNUM, inferior_fpregisters.operand_seg);
RF (FDOFF_REGNUM, inferior_fpregisters.operand);
RF (FOP_REGNUM, inferior_fpregisters.opcode);
}
void
store_inferior_registers (int ignored)
{
struct reg inferior_registers;
struct env387 inferior_fp_registers;
RS ( 0, inferior_registers.r_eax);
RS ( 1, inferior_registers.r_ecx);
RS ( 2, inferior_registers.r_edx);
RS ( 3, inferior_registers.r_ebx);
RS ( 4, inferior_registers.r_esp);
RS ( 5, inferior_registers.r_ebp);
RS ( 6, inferior_registers.r_esi);
RS ( 7, inferior_registers.r_edi);
RS ( 8, inferior_registers.r_eip);
RS ( 9, inferior_registers.r_eflags);
RS (10, inferior_registers.r_cs);
RS (11, inferior_registers.r_ss);
RS (12, inferior_registers.r_ds);
RS (13, inferior_registers.r_es);
RS (14, inferior_registers.r_fs);
RS (15, inferior_registers.r_gs);
RS (FP0_REGNUM, inferior_fpregisters.regs[0]);
RS (FP0_REGNUM + 1, inferior_fpregisters.regs[1]);
RS (FP0_REGNUM + 2, inferior_fpregisters.regs[2]);
RS (FP0_REGNUM + 3, inferior_fpregisters.regs[3]);
RS (FP0_REGNUM + 4, inferior_fpregisters.regs[4]);
RS (FP0_REGNUM + 5, inferior_fpregisters.regs[5]);
RS (FP0_REGNUM + 6, inferior_fpregisters.regs[6]);
RS (FP0_REGNUM + 7, inferior_fpregisters.regs[7]);
RS (FCTRL_REGNUM, inferior_fpregisters.control);
RS (FSTAT_REGNUM, inferior_fpregisters.status);
RS (FTAG_REGNUM, inferior_fpregisters.tag);
RS (FCS_REGNUM, inferior_fpregisters.code_seg);
RS (FCOFF_REGNUM, inferior_fpregisters.eip);
RS (FDS_REGNUM, inferior_fpregisters.operand_seg);
RS (FDOFF_REGNUM, inferior_fpregisters.operand);
RS (FOP_REGNUM, inferior_fpregisters.opcode);
ptrace (PT_SETREGS, inferior_pid,
(PTRACE_ARG3_TYPE) &inferior_registers, 0);
ptrace (PT_SETFPREGS, inferior_pid,
(PTRACE_ARG3_TYPE) &inferior_fp_registers, 0);
}
#endif
#ifdef __powerpc__
void
fetch_inferior_registers (int regno)
{
struct reg inferior_registers;
struct fpreg inferior_fp_registers;
int i;
ptrace (PT_GETREGS, inferior_pid,
(PTRACE_ARG3_TYPE) & inferior_registers, 0);
ptrace (PT_GETFPREGS, inferior_pid,
(PTRACE_ARG3_TYPE) & inferior_fp_registers, 0);
for (i = 0; i < 32; i++)
RF (i, inferior_registers.fixreg[i]);
RF (LR_REGNUM, inferior_registers.lr);
RF (CR_REGNUM, inferior_registers.cr);
RF (XER_REGNUM, inferior_registers.xer);
RF (CTR_REGNUM, inferior_registers.ctr);
RF (PC_REGNUM, inferior_registers.pc);
for (i = 0; i < 32; i++)
RF (FP0_REGNUM + i, inferior_fp_registers.r_regs[i]);
}
void
store_inferior_registers (int regno)
{
struct reg inferior_registers;
struct fpreg inferior_fp_registers;
int i;
for (i = 0; i < 32; i++)
RS (i, inferior_registers.fixreg[i]);
RS (LR_REGNUM, inferior_registers.lr);
RS (CR_REGNUM, inferior_registers.cr);
RS (XER_REGNUM, inferior_registers.xer);
RS (CTR_REGNUM, inferior_registers.ctr);
RS (PC_REGNUM, inferior_registers.pc);
for (i = 0; i < 32; i++)
RS (FP0_REGNUM + i, inferior_fp_registers.r_regs[i]);
ptrace (PT_SETREGS, inferior_pid,
(PTRACE_ARG3_TYPE) & inferior_registers, 0);
ptrace (PT_SETFPREGS, inferior_pid,
(PTRACE_ARG3_TYPE) & inferior_fp_registers, 0);
}
#endif
read_inferior_memory (CORE_ADDR memaddr, char *myaddr, int len)
{
register int i;
register CORE_ADDR addr = memaddr & -sizeof (int);
register int count
= (((memaddr + len) - addr) + sizeof (int) - 1) / sizeof (int);
register int *buffer = (int *) alloca (count * sizeof (int));
for (i = 0; i < count; i++, addr += sizeof (int))
{
buffer[i] = ptrace (PT_READ_D, inferior_pid, (PTRACE_ARG3_TYPE) addr, 0);
}
memcpy (myaddr, (char *) buffer + (memaddr & (sizeof (int) - 1)), len);
}
int
write_inferior_memory (CORE_ADDR memaddr, char *myaddr, int len)
{
register int i;
register CORE_ADDR addr = memaddr & -sizeof (int);
register int count
= (((memaddr + len) - addr) + sizeof (int) - 1) / sizeof (int);
register int *buffer = (int *) alloca (count * sizeof (int));
extern int errno;
buffer[0] = ptrace (PT_READ_D, inferior_pid, (PTRACE_ARG3_TYPE) addr, 0);
if (count > 1)
{
buffer[count - 1]
= ptrace (PT_READ_D, inferior_pid,
(PTRACE_ARG3_TYPE) addr + (count - 1) * sizeof (int), 0);
}
memcpy ((char *) buffer + (memaddr & (sizeof (int) - 1)), myaddr, len);
for (i = 0; i < count; i++, addr += sizeof (int))
{
errno = 0;
ptrace (PT_WRITE_D, inferior_pid, (PTRACE_ARG3_TYPE) addr, buffer[i]);
if (errno)
return errno;
}
return 0;
}
void
initialize_low (void)
{
initialize_arch ();
}